Table of Contents
Overview
Definition and Structure
The cytoskeleton is defined as a complex and dynamic network of interlinking protein filaments that extends from the nucleus to the plasma membrane within a cell. It comprises three structurally and functionally distinct components: microfilaments, intermediate filaments, and microtubules.[4.1] This extensive network of filamentous or tubular intracellular proteins varies in morphology and composition, playing a crucial role in maintaining the shape and internal organization of the cell.[6.1] The cytoskeleton is a complex network of filaments and tubules that extends throughout the cytoplasm of a cell, providing essential structural support and shape.[5.1] It plays a critical role in organizing and tethering organelles, ensuring they remain in place while also facilitating their movement within the cell.[5.1] The cytoskeleton is composed of three main types of protein fibers: microfilaments, intermediate filaments, and microtubules, which work together to maintain the internal organization of the cell.[6.1] Additionally, the cytoskeleton is involved in vital cellular processes such as molecule transport, cell division, and cell signaling, underscoring its importance in maintaining cellular integrity and function.[5.1] Overall, the cytoskeleton serves as the framework of the cell, akin to a building's frame, providing both support and a defined shape.[5.1] From an evolutionary perspective, the cytoskeleton is a fundamental feature across all domains of life, with homologous proteins forming different polymers that serve various functions in contemporary prokaryotes and eukaryotes.[3.1] The actin and tubulin genes, which are integral to the cytoskeleton, originated in the common ancestor of life on Earth and have diverged significantly over the past three billion years.[2.1] Thus, the cytoskeleton not only contributes to the mechanical integrity and shape of cells but also reflects a rich evolutionary history that underscores its significance in cellular biology.Functions of the Cytoskeleton
The cytoskeleton serves several critical functions that are essential for maintaining cellular integrity and facilitating various biological processes. One of its primary roles is to provide structural support, which helps maintain cell shape and mechanical stability. Microtubules, for instance, are integral in preserving cell shape and providing support, while actin filaments contribute to the dynamic nature of cellular architecture.[18.1] In addition to structural support, the cytoskeleton is crucial for intracellular transport. Microtubules act as tracks for the movement of organelles and vesicles within the cell, facilitating the delivery of essential components to specific locations.[18.1] This transport system is vital for maintaining cellular organization and function, particularly in processes such as cell division and signaling. The cytoskeleton also plays a significant role in cell motility. Actin filaments are involved in various forms of cell movement, including muscle contraction and cell migration, which are essential for processes like embryogenesis, wound healing, and immune responses.[14.1] The dynamic reorganization of actin filaments allows cells to change shape and move in response to external signals, highlighting the cytoskeleton's adaptability to environmental changes. Moreover, the cytoskeleton is involved in organizing the contents of the cell and connecting it to the external environment. It spatially organizes cellular components, ensuring that biochemical reactions occur in the appropriate locations.[21.1] This organization is crucial for the cell's ability to respond to mechanical signals from its surroundings, which can influence cellular behavior and fate.[20.1]History
Early Discoveries
The understanding of the cytoskeleton has evolved significantly over the past few decades, particularly with early discoveries that reshaped its perceived origins. Initially, it was widely believed that the cytoskeleton was a feature exclusive to eukaryotic cells. This view was dramatically overturned around 20 years ago when it was discovered that prokaryotes also possess homologues of key cytoskeletal proteins, specifically tubulin and actin.[48.1] Research conducted in the 1990s played a pivotal role in establishing that the cytoskeleton actually originated in prokaryotes. Notably, the filamentation temperature-sensitive protein Z (FtsZ) was identified as a crucial component of the prokaryotic cytoskeleton, further supporting the notion that these structures are not unique to eukaryotic organisms.[47.1] The year 2017 marks the 25th anniversary of the discovery of homologues of tubulin and actin in prokaryotes, a significant milestone in the understanding of the cytoskeleton.[49.1] Prior to 1992, it was widely accepted that tubulin and actin were unique to eukaryotes; however, this view was dramatically overturned by the discovery that bacteria possess homologues of these proteins.[48.1] The cytoskeleton is now recognized as a system of intracellular filaments that is crucial for cell shape, division, and function across all three domains of life.[48.1]Evolution of the Cytoskeleton
The evolution of the cytoskeleton is a significant aspect of cellular biology, reflecting the complexity and diversity of life forms. Initially, it was believed that the cytoskeleton was a feature unique to eukaryotic cells. However, this view was dramatically altered around 20 years ago with the discovery that prokaryotes also possess homologues of both tubulin and actin, specifically the proteins FtsZ and MreB, which share a 40-50% sequence identity across various bacterial and archaeal species.[69.1] This finding indicated that the cytoskeleton likely originated in prokaryotes, challenging the previously held notion that such structures were exclusive to eukaryotes.[68.1] The transition from prokaryotic to eukaryotic cells marks a pivotal event in the evolution of life on Earth, with the actin cytoskeleton being one of the key features that distinguish eukaryotic cells.[61.1] The eukaryotic cytoskeleton appears to have evolved from ancestral precursors related to prokaryotic proteins, suggesting a shared evolutionary lineage.[69.1] The discovery of FtsZ, a prokaryotic tubulin homologue that assembles into a ring at the future site of cell division, further supports this evolutionary connection.[66.1] The evolution of the cytoskeleton across the three domains of life—Bacteria, Archaea, and Eukarya—provides critical insights into cellular complexity and function. Cytoskeletal proteins are recognized as master organizers of cell division and elongation in both bacteria and archaea.[64.1] Despite these advancements, the mechanisms by which cytoskeletal proteins influence the morphology of prokaryotic cells, particularly those with complex shapes, remain poorly understood.[64.1] Furthermore, the function and regulation of actin-like proteins across these domains represent areas of ongoing research, with a particular focus on archaea, as mapping their cytoskeletal systems may enhance our understanding of evolutionary relationships.[62.1] Different bacterial species utilize evolutionarily divergent yet functionally convergent cytoskeletal proteins, such as DivIVA, PopZ, and bactofilins, which polymerize into multivalent supramolecular organizing centers at the cell poles.[64.1] This diversity highlights the complexity of cytoskeletal evolution and its implications for cellular organization and function across various life forms. In eukaryotes, the cytoskeleton is characterized by its complexity, consisting of three main types of polymers: actin filaments, intermediate filaments, and microtubules, which are influenced by three families of motor proteins—myosin, kinesin, and dynein.[71.1] This intricate structure is not only essential for providing mechanical support but also plays critical roles in various cellular processes. For instance, regulators of actin nucleation, such as WAVE proteins and certain formins, are modulated by Rho GTPases, which are known to have multiple functions beyond actin remodeling. These regulatory proteins also contribute to microtubule dynamics, endocytosis, vesicle trafficking, gene transcription, responses to oxidative stress, cytokinesis, cell cycle progression, and apoptosis.[72.1] The evolution of the cytoskeleton thus reflects a significant increase in cellular complexity and specialization across different domains of life.Components Of The Cytoskeleton
Microfilaments
Microfilaments, primarily composed of actin, are crucial components of the cytoskeleton that play significant roles in various cellular processes. They are essential for maintaining cell shape and structural integrity, contributing to dynamic behaviors such as cell polarization, membrane protrusion, and cell adhesion.[122.1] During cell migration, microfilaments facilitate the formation of protrusions at the leading edge of the cell, where new adhesions are established, thereby driving the migration process.[99.1] The actin cytoskeleton is particularly important in reinforcing the cell membrane at the cortex and is actively involved in cytokinesis during cell division.[98.1] This dynamic network of microfilaments is not only responsible for structural support but also interacts with signaling pathways that regulate cellular functions, such as motility and adhesion.[116.1] For instance, the activation of integrins can link cell adhesion to changes in gene expression, illustrating how microfilaments are involved in both mechanical and biochemical signaling.[117.1] Microfilaments are integral to cellular remodeling in response to mechanical stimuli, which is essential for understanding the mechanical activation of biochemical signaling pathways. The ability of cells to sustain and respond to mechanical stress is dependent not on the properties of individual filaments but on the characteristics of the complex cytoskeletal network, which is constantly adapting to both chemical and mechanical cues in the environment.[120.1] When subjected to external stress, actin filaments and microtubules undergo dynamic reorganization, particularly in endothelial cells, which align and elongate in the direction of flow.[121.1] Additionally, changes in membrane tension regulate protrusive activities, influencing the formation of cellular extensions such as lamellipodia and filopodia, which drive movement.[121.1] Overall, understanding these dynamic properties of the cytoskeleton is critical for elucidating how cells adapt their structures in response to specific stimuli.[119.1]Microtubules
Microtubules are one of the three primary components of the cytoskeleton, which also includes intermediate filaments and actin filaments (microfilaments).[90.1] This dynamic network of protein filaments provides structural support and organization within the cell, functioning similarly to roadways that facilitate transport.[89.1] Microtubules serve as essential pathways for intracellular transport and play a critical role in maintaining cell shape and structure.[104.1] Additionally, they are involved in cell division, aiding in the movement of chromosomes during this process.[92.1] The cytoskeleton, including microtubules, is vital for the overall integrity of the cell, allowing it to respond to external stimuli and execute precise movements.[104.1] In addition to their structural roles, microtubules serve as tracks for the movement of organelles and vesicles within the cell, effectively organizing the internal architecture of the cell.[104.1] They are integral to the process of cell division, as they form the mitotic spindle that segregates chromosomes into daughter cells.[92.1] Furthermore, microtubules are involved in various signaling pathways, interacting with proteins that regulate cellular functions, including apoptosis and differentiation.[104.1] Microtubules are integral components of the cytoskeleton, which plays a crucial role in regulating cellular behavior by serving as both a structural framework and a mediator of mechanical and biochemical signals that influence cell fate.[101.1] Modifications to the cytoskeleton can significantly impact lineage commitment and differentiation efficiency, particularly in the context of cellular reprogramming.[101.1] The influence of mechanical or biological cues on the cytoskeleton has been shown to affect various cellular functions and direct differentiation pathways, similar to the effects of epigenetic or genetic factors.[101.1] Understanding the role of microtubules within this framework is essential for elucidating their significance in numerous cellular processes.[101.1]In this section:
Cellular Functions
Role in Cell Motility
The cytoskeleton plays a crucial role in cell motility, facilitating various cellular movements through its dynamic structure. It is composed of three primary components: actin filaments, microtubules, and intermediate filaments, which work in concert to enable precise control over cell migration. This cooperation is essential for processes such as cell polarization, protrusion formation, adhesion, contractility, and force transmission during migration.[133.1] The cytoskeleton is a complex and dynamic network of protein filaments found in the cytoplasm of eukaryotic cells, playing a pivotal role in maintaining cell shape, facilitating intracellular transport, and enabling cell motility.[127.1] Among its components, actin filaments are essential for cell motility, contributing to the formation of structures that extend the cell membrane, such as lamellipodia and filopodia.[127.1] Microtubules and intermediate filaments also interact significantly, with researchers observing direct interactions between these components, which are crucial for various cellular processes.[128.1] The assembly and maintenance of the intermediate filament network depend on the motility provided by microtubules and microfilaments, highlighting the importance of crosstalk among these cytoskeletal elements.[129.1] Molecular motors, including kinesin, dynein, and myosin Va, mediate this crosstalk, regulating the interactions and ensuring that the cytoskeletal network functions cohesively to support processes like cell migration and division.[129.1] Thus, the intricate interplay between actin filaments, microtubules, and intermediate filaments is vital for effective cellular movement and overall cellular function.[127.1] The cytoskeleton is a complex network of protein filaments that extends throughout the cytoplasm of eukaryotic cells, providing a structural framework that determines cell shape and organization.[131.1] Its mechanical properties, including elasticity, membrane tension, and cell-substrate adhesion, play a crucial role in enabling cells to respond to and influence chemical and mechanical signals from their environment.[134.1] This coordinated interplay of mechanical properties is essential for various cellular processes, including cell motility and division, as the cytoskeleton is responsible for facilitating these movements.[131.1] The cytoskeleton plays a crucial role in cell motility, serving as a dynamic framework that facilitates various cellular processes, including migration and intracellular transport.[132.1] Among the key components of the cytoskeleton, intermediate filaments, particularly vimentin, are essential for mediating crosstalk between different cytoskeletal systems. Vimentin intermediate filaments stabilize dynamic microtubules through direct interactions, which enhances the persistence of cell polarity and directed migration.[147.1] This stabilization is vital for the assembly and maintenance of the cytoskeletal network, as it relies on the motility provided by microtubules and microfilaments.[146.1] Thus, the intricate interactions among these cytoskeletal components ensure that cells can adapt their motility in response to various physiological conditions, highlighting the importance of the cytoskeleton in maintaining cellular function and structure.[132.1]In this section:
Recent Advancements
Innovations in Cytoskeletal Research Techniques
Recent advancements in cytoskeletal research techniques, particularly through the application of super-resolution microscopy (SRM), have significantly enhanced our understanding of the dynamic behavior of the cytoskeleton in live cells. SRM has become an indispensable tool for monitoring cytoskeleton dynamics, as well as for the imaging, detection, and tracing of functional biomolecules in living cells. This technology overcomes the barrier of the diffraction limit, allowing for the visualization of sub-cellular structures down to the sub-10 nm level.[176.1] Furthermore, super-resolution microscopy approaches have provided key insights into the organization and functions of the neuronal cytoskeleton and its unique nanostructures.[177.1] These insights are the focus of ongoing reviews that aim to provide a comprehensive panorama of super-resolution microscopy applications in the study of the neuronal cytoskeleton, delineating the progress made in this field.[178.1] Recent advancements in imaging techniques, particularly total internal reflection fluorescence microscopy (TIRF) and confocal laser scanning microscopy (CLSM) with Airyscan technology, have significantly enhanced our understanding of the dynamics of the actin cytoskeleton. These imaging methods are gentle enough for live cell imaging and are essential for capturing the rapid structural changes exhibited by the actin cytoskeleton, often requiring the use of both techniques to obtain a comprehensive view of these dynamics.[180.1] The cytoskeleton plays several fundamental roles in the cell, including organizing the spatial arrangement of subcellular organelles and regulating cell dynamics and motility, which are critical for understanding cellular processes.[181.1] Furthermore, recent studies have highlighted the roles of actin-binding proteins (ABPs) in skeletal myogenesis, emphasizing their implications in muscular disorders and the molecular mechanisms that regulate this process.[184.1] This body of research not only elucidates the functions of ABPs in actin cytoskeletal dynamics but also opens new avenues for identifying potential therapeutic targets in the context of muscular diseases.[184.1] In addition to imaging advancements, the development of molecular force sensors has provided molecular insights into mechanosensing in live cells, further enriching our understanding of cytoskeletal dynamics.[174.1] Collectively, these innovations in cytoskeletal research techniques not only enhance our comprehension of cellular processes but also open new avenues for therapeutic interventions targeting cytoskeletal components in various diseases.[182.1]Applications In Medicine
Cytoskeleton in Disease Mechanisms
The cytoskeleton is integral to the pathogenesis of various diseases, notably cancer and neurodegenerative disorders. In cancer, the cytoskeleton's dynamic remodeling is essential for tumor progression and metastasis, involving actin filaments, microtubules, and intermediate filaments that facilitate cell invasion and migration, enabling cancer cells to evade immune responses.[220.1] The acquisition of migratory and invasive phenotypes is a hallmark of cancer, emphasizing the role of cytoskeletal integrity in maintaining normal cellular behavior.[218.1] Recent research underscores the involvement of microtubules and actin in cancer metastasis, with alterations in these components enhancing cancer cell invasion and migration.[221.1] Signaling pathways, such as Rho GTPases, mediate tumor cell migration by affecting the cytoskeleton, while microRNAs regulate cancer cell dynamics, presenting potential therapeutic targets.[221.1][219.1] In neurodegenerative disorders, mutations in genes related to cytoskeletal proteins can disrupt networks, impairing cell-cell contact formation crucial for tissue architecture and function.[235.1] The actin cytoskeleton, microtubules, and intermediate filaments are vital for regulating cell shape, motility, and interactions with the extracellular environment, influencing cell signaling processes.[236.1] These components not only provide structural support but also act as mediators of cell signaling, highlighting their significance in cellular dynamics and disease mechanisms.[236.1]Therapeutic Targets Involving the Cytoskeleton
The cytoskeleton serves as a critical therapeutic target in various medical applications, particularly in the treatment of cancer and other cytoskeleton-related diseases. The cytoskeleton is composed of a complex network of actin filaments, microtubules, and intermediate filaments, which are essential for maintaining cellular structure and function. In normal cells, these components are highly integrated and coordinated; however, alterations in the cytoskeleton can lead to significant pathological changes, including altered cell polarity, disrupted cell cycle progression, and enhanced cell migration, all of which contribute to cancer metastasis.[212.1] Cytoskeletal proteins constitute a vital framework within eukaryotic cells, primarily comprising microfilaments, microtubules, and intermediate fibers, which are essential for maintaining cellular structure and function.[231.1] Cytoskeletal drugs are small molecules that interact with these components, influencing cellular processes through various mechanisms. For example, some cytoskeletal drugs, such as taxol, stabilize microtubules, while others, like Phalloidin, stabilize actin filaments.[231.1] Additionally, compounds such as Cytochalasin D bind to actin monomers, preventing their polymerization.[231.1] Compared to conventional chemotherapy, which often has broader effects, cytoskeletal-targeting drugs demonstrate more efficient anticancer effects with fewer side effects, making them a promising option in precision medicine.[233.1] This specificity in targeting the cytoskeleton enhances their potential as effective therapeutic agents in treating refractory diseases.[233.1] Recent advancements in nanotechnology have led to the development of materials that offer diverse mechanisms of action, either by directly interacting with cytoskeletal components or by influencing cellular signaling pathways that modulate the cytoskeleton.[223.1] However, the selective targeting of specific cytoskeletal elements without impacting other cellular components requires further investigation.[222.1] Currently, there are limited target ligands that effectively target tumor cytoskeletons, which restricts the application of cytoskeletal therapy.[224.1] Even if nanomaterials successfully reach tumor sites, they may interact with other tumor components, such as immune cells, potentially adversely affecting immune responses.[224.1] In clinical practice, some anti-cancer drugs achieve therapeutic effects on the cytoskeleton by acting on various cytoskeletal protein components; however, the lack of cell-specific targeting can lead to severe side effects due to unnecessary cytoskeletal recombination in organisms.[225.1] Thus, while the potential of nanotechnology in enhancing treatment outcomes for diseases associated with cytoskeletal dysfunction is evident, addressing these challenges is essential for successful clinical application.[222.1]In this section:
Future Directions
Emerging Research Areas
Emerging research areas in cytoskeleton studies are increasingly focused on understanding the molecular mechanisms that govern cytoskeletal function and its implications in various disease processes. Future research directions emphasize the need for a deeper comprehension of these mechanisms, which could lead to the development of targeted therapeutic approaches aimed at cytoskeletal pathways.[253.1] One promising avenue involves the comparison of the nuclear cytoskeleton proteome in both untreated and activated immune cells. This area of research is particularly intriguing due to the poorly defined structure of nuclear actin fibers, which could yield significant insights into immune cell behavior.[254.1] Additionally, the exploration of cytoskeleton-targeting nanomaterials is gaining traction, as these materials hold potential for therapeutic interventions across a range of diseases. Current reviews highlight the progress made in this field, the challenges faced, and the future directions for utilizing nanomaterials to modulate cytoskeletal dynamics.[255.1] Recent advancements in technology, particularly the development of deep learning-based methods for analyzing the cytoskeleton, are set to revolutionize this field. A research team at Kumamoto University has created an AI-driven segmentation technique that enhances the accuracy and efficiency of cytoskeleton density measurements, which could transform how scientists study cellular functions.[257.1] This innovation not only automates image analysis but also facilitates large-scale studies, thereby unlocking new insights into cellular structure and function.[257.1] Moreover, the integration of deep learning techniques with mathematical modeling is enabling 3D analysis of mitotic spindle dynamics, which could significantly impact cell biology studies. The application of AI-based time-lapse movie analysis is highlighted as a powerful tool for accelerating cytoskeletal research and drug discovery.[259.1]Potential Implications for Biotechnology
The integration of artificial intelligence (AI) into the study of the cytoskeleton presents significant potential implications for biotechnology, particularly in the development of new therapeutic strategies targeting cytoskeletal-related diseases. A notable advancement in this area is the development of a deep learning-based method for analyzing the cytoskeleton, which has been shown to enhance the accuracy and efficiency of cytoskeleton density measurements. This method, created by a research team at Kumamoto University, utilizes an AI-driven segmentation technique that significantly improves the precision of cytoskeletal analysis, thereby facilitating better understanding and treatment of related diseases.[275.1] However, the successful integration of AI algorithms into clinical workflows must be approached with caution. It is essential that these algorithms align with existing information technology infrastructures to ensure seamless implementation.[273.1] Additionally, the replication of AI studies using 'real-life' data poses challenges due to the sporadic availability of training data and code, which must be addressed to fully realize the potential of AI in this field.[273.1] Moreover, the advent of multimodal AI offers the capability to process and integrate diverse data types, such as medical imaging, electronic health records, and genomic information. This could revolutionize healthcare by providing a more comprehensive understanding of cytoskeletal dynamics and their implications in various diseases.[274.1] Nevertheless, significant challenges remain in terms of data integration, standardization, and privacy, which must be navigated to harness the full benefits of these technologies in biotechnology.[274.1]In this section:
References
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[3] Overview of the Cytoskeleton from an Evolutionary Perspective — Overview of the Cytoskeleton from an Evolutionary Perspective Cold Spring Harb Perspect Biol. 2018 Jul 2;10(7): a030288. doi ... Organisms in the three domains of life depend on protein polymers to form a cytoskeleton that helps to establish their shapes, maintain their mechanical integrity, divide, and, in many cases, move. Eukaryotes have the
[4] Cytoskeleton: definition, structure and function - Kenhub — The cytoskeleton is a collective term that refers to an extensive network of filamentous or tubular intracellular proteins of varying morphology and composition scattered within the cytoplasm of a cell.It consists of three structurally and functionally distinct components: microfilaments, intermediate filaments and microtubules. Microfilaments, which are the smallest components of the
[5] Cytoskeleton - Definition, Structure and Functions - Biology Dictionary — Cytoskeleton - Definition, Structure and Functions | Biology Dictionary Cell Cell The cytoskeleton is a network of filaments and tubules that extends throughout a cell, through the cytoplasm, which is all of the material within a cell except for the nucleus. The cytoskeleton supports the cell, gives it shape, organizes and tethers the organelles, and has roles in molecule transport, cell division and cell signaling. The cytoskeleton organizes the cell and keeps the cell’s organelles in place, but it also aids in the movement of organelles throughout the cell. Similarly, the cytoskeleton helps move chromosomes during cell division. Like a building’s frame, the cytoskeleton is the “frame” of the cell, keeping structures in place, providing support, and giving the cell a definite shape. Cell
[6] Cytoskeleton: Definition, Structure, Components, & Function - Science Facts — Types of Blood Cells With Their Structure, and Functions The cytoskeleton is a cellular component that helps to maintain the shape and internal organization of a cell. The cytoskeleton is present in all types of cells – animals and plants. The cytoskeleton consists of three different types of protein fibers: microfilaments, intermediate filaments, and microtubules. This network of filaments, linked to the plasma membrane by particular connector proteins, provides the shape and structure to the cell. As a shaper and mover of cells, the cytoskeleton has various significant functions. What are the components of the cytoskeleton?*Ans. The components of the cytoskeleton are microfilaments, intermediate filaments, and microtubules. Save my name, email, and website in this browser for the next time I comment. Plant Cell: Parts and Structure With Functions
[14] Actin: Structure, Function, and Dynamics - The Science Notes — Muscle Contraction: Actin filaments interact with myosin to facilitate muscle contraction. This interaction is essential for muscle function and movement. Cell Motility: Actin-driven movements are critical for cell migration, allowing cells to move and change shape in response to various signals. Cytokinesis: During cell division, actin filaments form the contractile ring that separates
[18] Cytoskeletal Components and Their Role in Cellular Function — Cytoskeletal Components and Their Role in Cellular Function - BiologyInsights Explore how cytoskeletal components like microfilaments and microtubules orchestrate essential cellular functions and dynamics. This network provides structural support, facilitates intracellular transport, and plays a role in cell division and signaling pathways. Understanding the components that make up this cellular scaffold is essential for grasping how cells maintain their shape, move, and perform specialized functions. They are involved in intracellular signaling pathways by interacting with proteins that regulate cellular processes like apoptosis and differentiation. Microtubules are dynamic components of the cytoskeleton, serving as tracks for intracellular transport and playing a role in maintaining cell shape and structure. This regulation is essential for maintaining cellular integrity and responding to external stimuli, allowing cells to execute precise movements and structural changes.
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[21] Cell mechanics and the cytoskeleton - Nature — The cytoskeleton carries out three broad functions: it spatially organizes the contents of the cell; it connects the cell physically and biochemically to the external environment; and it generates
[47] The prokaryotic cytoskeleton | Nature Reviews Molecular Cell Biology — However, research in the 1990s firmly established that, in fact, the cytoskeleton originated in prokaryotes, with the discovery that filamentation temperature-sensitive protein Z (FtsZ) is the
[48] The evolution of the cytoskeleton - PMC - PubMed Central (PMC) — The cytoskeleton is a system of intracellular filaments crucial for cell shape, division, and function in all three domains of life. ... The view that the cytoskeleton was a feature unique to eukaryotes was dramatically overturned about 20 years ago by the discovery that bacteria possess homologues of both tubulin (de Boer et al., 1992
[49] The discovery of the prokaryotic cytoskeleton: 25th anniversary — The year 2017 marks the 25th anniversary of the discovery of homologues of tubulin and actin in prokaryotes. Before 1992, it was largely accepted that tubulin and actin were unique to eukaryotes. Then three laboratories independently discovered that FtsZ, a protein already known as a key player in b …
[61] The Archaeal Roots of the Eukaryotic Dynamic Actin Cytoskeleton — The transition from prokaryotic to eukaryotic cells represents a cornerstone event in the evolution of life on Earth. The actin cytoskeleton is one of many key features of eukaryotic cells. ... the Bacteria, Archaea, and Eukarya ... An actin-based cytoskeleton in archaea. Mol. Microbiol. 2011; 80:1052-1061. Crossref. Scopus (103) PubMed.
[62] Archaeal actins and the origin of a multi-functional cytoskeleton — the function and regulation of actin-like proteins across bacteria, archaea, and eukarya, marking some of the terra incognita that remain in this landscape. We focus particu lar attention on archaea because mapping the structure and function of cytoskeletal systems across this domain promises to help us understand the evolutionary relationship
[64] Bacterial and archaeal cytoskeletons: Current Biology - Cell Press — Cell Figure 1 Cytoskeletal proteins are master organizers of cell division and cell elongation in bacteria and archaea. Despite these exciting advances, how cytoskeletal proteins curve prokaryotic cells, particularly those with complex shapes, is still poorly understood, as is the modulation of peptidoglycan synthesis by non-cytomotive cytoskeletal filaments. For instance, different bacteria employ evolutionarily divergent, yet functionally convergent, cytoskeletal proteins, including DivIVA, PopZ, and bactofilins that polymerize into multivalent supramolecular organizing centers at the cell poles. Cell. Cell. Archaeal cell biology: diverse functions of tubulin-like cytoskeletal proteins at the cell envelope Cell. Cell. Prokaryotic cytoskeletons: protein filaments organizing small cells Cell
[66] N-terminus GTPase domain of the cytoskeleton protein FtsZ plays a ... — 1. Introduction. Bacterial division is initiated with Z-ring formation. The cytoskeletal protein FtsZ assembles into a ring-like structure named Z ring at the septum of a dividing cell and serves as a scaffold for the assembly of the divisome (Adams and Errington, 2009).FtsZ is a prokaryotic homologue of tubulin.
[68] The discovery of the prokaryotic cytoskeleton: 25th anniversary — ABSTRACT The year 2017 marks the 25th anniversary of the discovery of homologues of tubulin and actin in prokaryotes. Before 1992, it was largely accepted that tubulin and actin were unique to eukaryotes. Then three laboratories independently discovered that FtsZ, a protein already known as a key player in bacterial cytokinesis, had the "tubulin signature se-quence" present in all α-, β
[69] Evolution of the cytoskeleton - PubMed — The eukaryotic cytoskeleton appears to have evolved from ancestral precursors related to prokaryotic FtsZ and MreB. FtsZ and MreB show 40-50% sequence identity across different bacterial and archaeal species. Here I suggest that this represents the limit of divergence that is consistent with maintai …
[71] Overview of the Cytoskeleton from an Evolutionary Perspective — Search in PubMed Search in PubMed Eukaryotes have the most complex cytoskeletons, comprising three cytoskeletal polymers-actin filaments, intermediate filaments, and microtubules-acted on by three families of motor proteins (myosin, kinesin, and dynein). Prokaryotes have polymers of proteins homologous to actin and tubulin but no motors, and a few bacteria have a protein related to intermediate filament proteins. Scale drawings of the actin filament, intermediate filament, and microtubule. Scale drawings of the actin filament, intermediate filament, and microtubule. - DOI - PMC - PubMed - DOI - PMC - PubMed - DOI - PMC - PubMed In search of the primordial actin filament. Search in PubMed Search in PubMed Search in PubMed Search in PubMed Search in PubMed Search in PubMed
[72] Origins and Evolution of the Actin Cytoskeleton - Madame Curie ... — Remarkably, many regulators of actin nucleation, including WAVE proteins and at least some formins, are themselves controlled by Rho GTPases, a class of regulatory proteins with multiple outputs, initially described as major regulators of actin remodeling but later found to participate also in microtubule dynamics, endocytosis, vesicle trafficking, gene transcription, the response to oxidative stress, cytokinesis, cell cycle progression and apoptosis.78-80 Small GTPases of the Rho family are present in all eukaryotes, although the “classical” subfamilies of Rho proper, Rac and Cdc42 are probably specific to Metazoa and Fungi.
[89] Overview of the Cytoskeleton Explained: Definition, Examples ... - Pearson — The cytoskeleton is a dynamic network of protein filaments that provides structure and organization within the cell, akin to roadways in a country.It consists of three main components: intermediate filaments, microtubules, and actin filaments (microfilaments). Intermediate filaments offer tensile strength, microtubules serve as transport pathways and are crucial for mitosis, while actin
[90] Cytoskeleton: Definition, Structure, Components, & Function - Science Facts — Types of Blood Cells With Their Structure, and Functions The cytoskeleton is a cellular component that helps to maintain the shape and internal organization of a cell. The cytoskeleton is present in all types of cells – animals and plants. The cytoskeleton consists of three different types of protein fibers: microfilaments, intermediate filaments, and microtubules. This network of filaments, linked to the plasma membrane by particular connector proteins, provides the shape and structure to the cell. As a shaper and mover of cells, the cytoskeleton has various significant functions. What are the components of the cytoskeleton?*Ans. The components of the cytoskeleton are microfilaments, intermediate filaments, and microtubules. Save my name, email, and website in this browser for the next time I comment. Plant Cell: Parts and Structure With Functions
[92] Cytoskeleton - Definition, Structure and Functions - Biology Dictionary — Cytoskeleton - Definition, Structure and Functions | Biology Dictionary Cell Cell The cytoskeleton is a network of filaments and tubules that extends throughout a cell, through the cytoplasm, which is all of the material within a cell except for the nucleus. The cytoskeleton supports the cell, gives it shape, organizes and tethers the organelles, and has roles in molecule transport, cell division and cell signaling. The cytoskeleton organizes the cell and keeps the cell’s organelles in place, but it also aids in the movement of organelles throughout the cell. Similarly, the cytoskeleton helps move chromosomes during cell division. Like a building’s frame, the cytoskeleton is the “frame” of the cell, keeping structures in place, providing support, and giving the cell a definite shape. Cell
[98] Actin-microtubule crosstalk in cell biology - Nature — The actin cytoskeleton is important for cell migration, reinforces the membrane at the cell cortex and drives cytokinesis at the final stages of cell division.
[99] Cytoskeletal Crosstalk in Cell Migration - PubMed — Cell migration is a highly dynamic process driven by the cytoskeleton, which mainly comprises the actin microfilaments, microtubules, and intermediate filaments. During migration, cells polarize and form protrusions at the front, where new adhesions are formed. These nascent adhesions mature into fo …
[101] Role of the cytoskeleton in cellular reprogramming: effects of ... — The cytoskeleton plays a crucial role in regulating cellular behavior, acting as both a structural framework and a mediator of mechanical and biochemical signals that influence cell fate. In the context of cellular reprogramming, modifications to the cytoskeleton can have profound effects on lineage commitment and differentiation efficiency.
[104] Cytoskeletal Components and Their Role in Cellular Function — Cytoskeletal Components and Their Role in Cellular Function - BiologyInsights Explore how cytoskeletal components like microfilaments and microtubules orchestrate essential cellular functions and dynamics. This network provides structural support, facilitates intracellular transport, and plays a role in cell division and signaling pathways. Understanding the components that make up this cellular scaffold is essential for grasping how cells maintain their shape, move, and perform specialized functions. They are involved in intracellular signaling pathways by interacting with proteins that regulate cellular processes like apoptosis and differentiation. Microtubules are dynamic components of the cytoskeleton, serving as tracks for intracellular transport and playing a role in maintaining cell shape and structure. This regulation is essential for maintaining cellular integrity and responding to external stimuli, allowing cells to execute precise movements and structural changes.
[116] Cytoskeletal Components and Their Role in Cellular Function — Cytoskeletal Components and Their Role in Cellular Function - BiologyInsights Explore how cytoskeletal components like microfilaments and microtubules orchestrate essential cellular functions and dynamics. This network provides structural support, facilitates intracellular transport, and plays a role in cell division and signaling pathways. Understanding the components that make up this cellular scaffold is essential for grasping how cells maintain their shape, move, and perform specialized functions. They are involved in intracellular signaling pathways by interacting with proteins that regulate cellular processes like apoptosis and differentiation. Microtubules are dynamic components of the cytoskeleton, serving as tracks for intracellular transport and playing a role in maintaining cell shape and structure. This regulation is essential for maintaining cellular integrity and responding to external stimuli, allowing cells to execute precise movements and structural changes.
[117] Signal Transduction and the Cytoskeleton - The Cell - NCBI Bookshelf — Integrin activation of the FAK and Src nonreceptor protein-tyrosine kinases thus links cell adhesion to changes in gene expression and cell behavior that are analogous to those induced by the binding of growth factors to their cell surface receptors. Members of the Rho subfamily of small GTP-binding proteins (including Rho, Rac, and Cdc42) play central roles in regulating the organization of the actin cytoskeleton and thus control a variety of cell processes, including cell motility, cell adhesion, and cytokinesis. Members of the Rho family thus serve as universal regulators of the actin cytoskeleton, linking extracellular signals to changes in cell shape and movement. In addition, Rho family members can activate MAP kinase signaling pathways, so these small GTP-binding proteins function as dual regulators of cytoskeletal remodeling and gene expression.
[119] Tensile force-induced cytoskeletal remodeling: Mechanics before ... — Understanding cellular remodeling in response to mechanical stimuli is a critical step in elucidating mechanical activation of biochemical signaling pathways. Experimental evidence indicates that external stress-induced subcellular adaptation is accomplished through dynamic cytoskeletal reorganization.
[120] Mechanotransduction at the Plasma Membrane-Cytoskeleton Interface — The ability of the cell to sustain and respond to mechanical stress is dependent, not on the individual filament properties, but on the properties of the complex cytoskeletal network, which is constantly adapting in response to both chemical and mechanical cues in the cell's environment . The cytoskeleton can generate tension and transmit
[121] Cell Stretching: How Mechanical Forces Reshape Cells — Published Time: 2025-03-19T17:16:19+00:00 Cell Stretching: How Mechanical Forces Reshape Cells - BiologyInsights Botany and Plant Sciences Environmental Science BiologyInsights Team Published Mar 19, 2025 This strain transmits to the cytoskeleton, prompting actin filaments and microtubules to reorganize. Endothelial cells lining blood vessels are particularly sensitive, aligning and elongating in the direction of flow. Changes in membrane tension also regulate protrusive activity, influencing the formation of lamellipodia and filopodia—cellular extensions that drive movement. This response is mediated by differential activation of Rho GTPases, coordinating cytoskeletal dynamics to facilitate movement. Tissue-Level Responses to Sustained Stretch This adaptation is particularly evident in the extracellular matrix (ECM), where collagen fiber orientation and elastin deposition enhance resilience. BiologyInsights Team BiologyInsights Team BiologyInsights Team Mar 23, 2025 BiologyInsights Team BiologyInsights Team Mar 13, 2025
[122] Intermediate filaments: Integration of cell mechanical properties ... — The cytoskeleton, which includes actin microfilaments, microtubules, and intermediate filaments (IFs), is responsible for the maintenance of animal cell shape and structural integrity. Each cytoskeletal network contributes its unique properties to dynamic cell behaviour, such as cell polarization, membrane protrusion, cell adhesion and contraction.
[127] The Cytoskeleton - Molecular Biology of the Cell - NCBI Bookshelf — The cytoskeleton pulls the chromosomes apart at mitosis and then splits the dividing cell into two. It drives and guides the intracellular traffic of organelles, ferrying materials from one part of the cell to another. It supports the fragile plasma membrane and provides the mechanical linkages that let the cell bear stresses and strains without being ripped apart as the environment shifts and
[128] Cytoskeleton - an overview | ScienceDirect Topics — Cytoskeleton. The cytoskeleton ("cyto" denotes "cell," therefore figuratively, means "the skeleton of the cell") is an evolutionarily highly conserved proteinaceous filament system of a cell. It includes actin, microtubules, and intermediate filaments, along with their binding and regulatory proteins. Despite the connotation of being a cell framework, the highly ordered
[129] Cytoskeleton - Definition, Structure and Functions - Biology Dictionary — Cytoskeleton - Definition, Structure and Functions | Biology Dictionary Cell Cell The cytoskeleton is a network of filaments and tubules that extends throughout a cell, through the cytoplasm, which is all of the material within a cell except for the nucleus. The cytoskeleton supports the cell, gives it shape, organizes and tethers the organelles, and has roles in molecule transport, cell division and cell signaling. The cytoskeleton organizes the cell and keeps the cell’s organelles in place, but it also aids in the movement of organelles throughout the cell. Similarly, the cytoskeleton helps move chromosomes during cell division. Like a building’s frame, the cytoskeleton is the “frame” of the cell, keeping structures in place, providing support, and giving the cell a definite shape. Cell
[131] The Cytoskeleton and Cell Movement - The Cell - NCBI Bookshelf — The site is secure. NCBI Bookshelf. Chapter 11The Cytoskeleton and Cell Movement A further level of organization is provided by the cytoskeleton, which consists of a network of protein filaments extending throughout the cytoplasm of all eukaryotic cells. The cytoskeleton provides a structural framework for the cell, serving as a scaffold that determines cell shape and the general organization of the cytoplasm. In addition to playing this structural role, the cytoskeleton is responsible for cell movements. This chapter discusses the structure and organization of each of these three major components of the cytoskeleton, as well as their roles in cell motility, organelle transport, cell division, and other types of cell movements. Your browsing activity is empty. Activity recording is turned off.
[132] Cytoskeleton Functions in Cell Structure and Transport — Cytoskeleton Functions in Cell Structure and Transport Home Biology Topics with MCQs Cell Biology The Dynamic Framework of Life: The Role of Cytoskeleton in Cell Shape... Cell Biology The Dynamic Framework of Life: The Role of Cytoskeleton in Cell Shape and Transport The cytoskeleton is a complex, dynamic network of protein filaments found in the cytoplasm of eukaryotic cells. Beyond serving as a scaffold for maintaining cell shape, the cytoskeleton plays a pivotal role in intracellular transport, cell division, and motility. Cytoskeleton in Maintaining Cell Shape Cytoskeleton in Cell Division Cytochalasins: Disrupt actin filaments, affecting cell motility. Cell Biology MCQs for medical entrance exams Cell Biology MCQs for NEET exams MCQs on Cell Biology Role of cytoskeleton in cells Cell Biology
[133] Cytoskeletal Crosstalk in Cell Migration - ScienceDirect — Cytoskeletal Crosstalk in Cell Migration - ScienceDirect All three cytoskeletal networks, actin, microtubules (MTs), and intermediate filaments (IFs), need to cooperate and function together to precisely control each step of migration, including cell polarization, formation of protrusions, adhesion, contractility, and force transmission. The constant crosstalk between actin, microtubules, and intermediate filaments ensures their coordinated dynamics to facilitate cell migration. The atypical Rho GTPase RhoD is a regulator of actin cytoskeleton dynamics and directed cell migration Actin dynamics in cell migration An RNAi screen of Rho signalling networks identifies RhoH as a regulator of Rac1 in prostate cancer cell migration The Rac activator STEF (Tiam2) regulates cell migration by microtubule-mediated focal adhesion disassembly 2022, Cell Adhesion and Migration
[134] Mechanics of the cell: Interaction mechanisms and mechanobiological ... — The mechanical properties of the cell are likely determined by, among many others, the cytoskeleton elasticity, membrane tension and cell-substrate adhesion. This coordinated but complex mechanical interplay is required however, for the cell to respond to and influence in a reciprocal manner the chemical and mechanical signals from the
[146] Intermediate filaments mediate cytoskeletal crosstalk - Nature — Intermediate filaments mediate cytoskeletal crosstalk | Nature Reviews Molecular Cell Biology Among the main mediators of crosstalk between intermediate filaments and the other cytoskeletal systems are the molecular motors kinesin, dynein and myosin Va. The assembly and maintenance of an intermediate-filament network depends on microtubule- and microfilament-based motility and this motility can be regulated by phosphorylation of intermediate filaments as well as by intermediate-filament-associated proteins, such as plectin and bullous pemphigoid antigens, and microtubule-associated proteins like tau. D. Motile properties of vimentin intermediate filament networks in living cells. B. Association of microtubule-associated protein 2 (MAP 2) with microtubules and intermediate filaments in cultured brain cells. D. Motile properties of vimentin intermediate filament networks in living cells.
[147] Vimentin intermediate filaments stabilize dynamic microtubules by ... — Vimentin intermediate filaments stabilize dynamic microtubules by direct interactions | Nature Communications Vimentin intermediate filaments stabilize dynamic microtubules by direct interactions Vimentin intermediate filaments stabilize dynamic microtubules by direct interactions In contrast to the cell experiments that showed stabilization of microtubules by IFs, an earlier work found that many IFs, including vimentin, contain tubulin-binding sites and that short peptides containing these binding sites inhibit microtubule polymerization in vitro14. For simultaneous assembly of microtubules (cyan) and IFs (red), we supplemented a combined buffer (CB) containing all ingredients necessary for the assembly of both filament types with 20 or 25 μM tubulin dimers and 2.3 or 3.6 μM vimentin tetramers (0.5 or 0.8 g/L protein). Vimentin intermediate filaments template microtubule networks to enhance persistence in cell polarity and directed migration.
[174] Novel imaging methods and force probes for molecular ... - Cell Press — However, the mechanisms in cells remained unclear since cell imaging techniques lacked molecular resolution. Thanks to recent developments in super-resolution microscopy (SRM) and molecular force sensors, it is possible to obtain molecular insight of mechanosensing in live cells.
[176] Editorial: Recent Advances in Fluorescent Probes for Super-Resolution ... — Super-resolution microscopy (SRM) has become an indispensable tool for monitoring cytoskeleton dynamics as well as the imaging, detection, and tracing of functional biomolecules in living cells. It overcomes the barrier of diffraction limit and allows for the visualization of sub-cellular structures down to the sub-10 nm level.
[177] Super-resolution imaging of the neuronal cytoskeleton — Super-resolution microscopy approaches have thus provided key insights into the organization and functions of the neuronal cytoskeleton and its unique nanostructures.
[178] (PDF) Super-resolution imaging of the neuronal cytoskeleton - ResearchGate — These insights are the focus of our review, where we attempt to provide a panorama of super-resolution microscopy applications to the study of the neuronal cytoskeleton, delineating the progress
[180] Super-Resolution Imaging of the Actin Cytoskeleton in Living Cells ... — In addition to TIRF-SIM, we describe confocal laser scanning microscopy (CLSM ) with Airyscan technology [], another imaging technique gentle enough for live cell imaging.Each technique has advantages and disadvantages, often requiring the use of both techniques to capture the full range of rapid structural changes exhibited by the actin cytoskeleton .
[181] Actin in Action: Imaging Approaches to Study Cytoskeleton ... - MDPI — The cytoskeleton plays several fundamental roles in the cell, including organizing the spatial arrangement of subcellular organelles, regulating cell dynamics and motility, providing a platform for interaction with neighboring cells, and ultimately defining overall cell shape. Fluorescence imaging has proved to be vital in furthering our understanding of the cytoskeleton, and is now a mainstay
[182] The Cytoskeleton and Its Binding Proteins as Mechanosensors ... — This Special Issue, entitled “Cytoskeleton and Its Binding Proteins as Mechanosensors, Transducers, and Functional Regulators of Cells” and published in the International Journal of Molecular Sciences, includes five significant articles (contributions 1–5) that advance our understanding of cytoskeletal biology and mechanotransduction and highlight potential therapeutic avenues. (contribution 1), the authors reveal the critical function played by actin-binding protein FLII during myogenic progenitor cell differentiation. The article also introduces the signal transducers in the mechanotransduction mechanisms regulated by cytoskeletal components in the endothelial cells. Throughout the article, the authors analyze the latest research on Fascin-1, with a particular focus on its expression in various types of cancer, its role in altering the mechanical properties of cancer cells, and its role in promoting the migration, invasion, and metastasis of cancer cells.
[184] Role of Actin-Binding Proteins in Skeletal Myogenesis — This comprehensive review summarizes the recent studies that have unveiled the role of ABPs in actin cytoskeletal dynamics, with a particular focus on skeletal myogenesis and diseases. This provides insight into the molecular mechanisms that regulate skeletal myogenesis via ABPs as well as research avenues to identify potential therapeutic targets.
[212] Roles of the cytoskeleton in human diseases - PubMed — In normal cells, these three cytoskeleton components are highly integrated and coordinated. However, the cytoskeleton undergoes drastic remodeling in cytoskeleton-related diseases, causing changes in cell polarity, affecting the cell cycle, leading to senescent diseases, and influencing cell migration to accelerate cancer metastasis.
[218] Targeting the cytoskeleton against metastatic dissemination — Cancer is a pathology characterized by a loss or a perturbation of a number of typical features of normal cell behaviour. Indeed, the acquisition of an inappropriate migratory and invasive phenotype has been reported to be one of the hallmarks of cancer. The cytoskeleton is a complex dynamic network of highly ordered interlinking filaments playing a key role in the control of fundamental
[219] miR-23b regulates cytoskeletal remodeling, motility and metastasis by ... — Uncontrolled cell proliferation and cytoskeletal remodeling are responsible for tumor development and ultimately metastasis. A number of studies have implicated microRNAs in the regulation of cancer cell invasion and migration. Here, we show that miR-23b
[220] Cytoskeletal Remodeling in Cancer - MDPI — Successful metastasis depends on cell invasion, migration, host immune escape, extravasation, and angiogenesis. The process of cell invasion and migration relies on the dynamic changes taking place in the cytoskeletal components; actin, tubulin and intermediate filaments. This is possible due to the plasticity of the cytoskeleton and coordinated action of all the three, is crucial for the
[221] Movers and shakers: cell cytoskeleton in cancer metastasis — Studies on the role of actin and its interacting partners have highlighted key signalling pathways, such as the Rho GTPases, and downstream effector proteins that, through the cytoskeleton, mediate tumour cell migration, invasion and metastasis. An emerging role for MTs in tumour cell metastasis is being unravelled and there is increasing interest in the crosstalk between key MT interacting proteins and the actin cytoskeleton, which may provide novel treatment avenues for metastatic disease. Metastasis accounts for the vast majority of cancer deaths (Schroeder et al., 2012) and is the result of movement of cancer cells from the primary site (site of origin of cancer) to a distant site or organ. doi: 10.1016/j.cell.2009.11.007. Regulation of the actin cytoskeleton in cancer cell migration and invasion.
[222] Cytoskeleton-modulating nanomaterials and their therapeutic potentials — Initially, the selective targeting of specific cytoskeletal elements without impacting other cellular components requires further investigation. In addition, despite the importance of achieving uniform and stable surface functionalization of gold-based nanomaterials for quality control, efforts to precisely control surface modifications have
[223] Cytoskeleton-modulating nanomaterials and their therapeutic ... - PubMed — These materials offer diverse mechanisms of action, either by directly interacting with cytoskeletal components or by influencing cellular signaling pathways that, in turn, modulate the cytoskeleton. Recent advancements have introduced magnetic field-responsive and light-responsive nanomaterials, which allow for targeted and controlled
[224] Disturbing cytoskeleton by engineered nanomaterials for enhanced cancer ... — At present, there are not many target ligands that effectively target tumor cytoskeleton, which limits the application of cytoskeletal therapy. Even if the nanomaterials successfully enter the tumor site, they have the potential to interact with other components of the tumor, such as immune cells, which can adversely affect immune response and
[225] Disturbing cytoskeleton by engineered nanomaterials for ... - PubMed — In clinical practice, some anti-cancer drugs achieve cytoskeletal therapeutic effects by acting on different cytoskeletal protein components. However, in the absence of cell-specific targeting, unnecessary cytoskeletal recombination in organisms would be disastrous, which would also bring about severe side effects during anticancer process.
[231] Cytoskeletal drugs - Wikipedia — Cytoskeletal drugs are small molecules that interact with actin or tubulin.These drugs can act on the cytoskeletal components within a cell in three main ways. Some cytoskeletal drugs stabilize a component of the cytoskeleton, such as taxol, which stabilizes microtubules, or Phalloidin, which stabilizes actin filaments.Others, such as Cytochalasin D, bind to actin monomers and prevent them
[233] Molecular targeted therapy for anticancer treatment — Advertisement View all journals Search Log in Explore content About the journal Publish with us Sign up for alerts RSS feed nature experimental & molecular medicine review articles article Molecular targeted therapy for anticancer treatment Download PDF Download PDF Review Article Open access Published: 12 October 2022 Molecular targeted therapy for anticancer treatment Hye-Young Min1 & Ho-Young Lee ORCID: orcid.org/0000-0001-7556-93121 Experimental & Molecular Medicine volume 54, pages 1670–1694 (2022)Cite this article 31k Accesses 184 Citations 14 Altmetric Metrics details Subjects Targeted therapies Abstract Since the initial clinical approval in the late 1990s and remarkable anticancer effects for certain types of cancer, molecular targeted therapy utilizing small molecule agents or therapeutic monoclonal antibodies acting as signal transduction inhibitors has served as a fundamental backbone in precision medicine for cancer treatment. Compared to conventional chemotherapy, targeted therapeutic agents have efficient anticancer effects with fewer side effects. Herein, we summarize current knowledge regarding several targeted therapeutic agents, including classification, a brief biology of target kinases, mechanisms of action, examples of clinically used targeted therapy, and perspectives for future development. Herein, we summarize current knowledge with respect to molecular targeted therapy, including the history, types, and mechanism of action, and provide examples of clinically available targeted therapy.
[235] Alterations of Cytoskeleton Networks in Cell Fate Determination and ... — Once cells reach a high cell density with complete cell-cell contacts, the Hippo signaling is activated, and then subsequently suppresses Yap1 nuclear translocation and cell proliferation. Mutations in genes for cytoskeletal and its associated proteins disturb cytoskeleton networks, resulting in the failure of cell-cell contact formation.
[236] The Cytoskeleton as Regulator of Cell Signaling Pathways — The Cytoskeleton as Regulator of Cell Signaling Pathways - ScienceDirect The Cytoskeleton as Regulator of Cell Signaling Pathways The actin cytoskeleton, microtubules, and intermediate filaments control cell signaling. During interphase, filamentous actin, microtubules, and intermediate filaments regulate cell shape, motility, transport, and interactions with the environment. The Cytoskeleton Serves as Effector and Mediator of Cell Signaling Major Signaling Pathways Regulate the Cytoskeleton in Interphase Cells The Cytoskeleton Controls Cell Signaling Different mechanisms underlie the cytoskeleton-dependent regulation of cell signaling. Regulation of actin dynamics by PI(4,5)P2 in cell migration and endocytosis F-actin dynamics regulates mammalian organ growth and cell fate maintenance Cell Compartmentalized signaling in neurons: from cell biology to neuroscience Cell Cell Signal Cell Signal Cells
[253] Cytoskeleton - Laboratory Notes — Future research directions include better understanding the molecular mechanisms controlling cytoskeletal function, its role in disease processes, and developing therapeutic approaches targeting cytoskeletal pathways. The importance of the cytoskeleton in cellular function makes it a crucial target for continued research and therapeutic
[254] Proteomic approaches to understanding the role of the cytoskeleton in ... — Comparison of the nuclear cytoskeleton proteome in untreated and activated immune cells would be an interesting new avenue in cytoskeleton research as the structure of nuclear actin fibers remains poorly defined (discussed in more detail within the 'Future directions' section).
[255] Cytoskeleton-modulating nanomaterials and their therapeutic potentials — This review explores the importance of research into cytoskeleton-targeting nanomaterials for developing therapeutic interventions for a range of diseases. It also addresses the progress made in this field, the challenges encountered, and future directions for using nanomaterials to modulate the cytoskeleton.
[257] Deep learning revolutionizes cytoskeleton research microbiologystudy — Deep Learning Revolutionizes Cytoskeleton Research Microbiologystudy » Microbiology Study Deep learning revolutionizes cytoskeleton research microbiologystudy A research team at Kumamoto University has developed a groundbreaking deep learning-based method for analyzing the cytoskeleton — the structural framework inside cells — more accurately and efficiently than ever before. This advancement, recently published in Protoplasma, could transform how scientists study cell functions in plants and other organisms. These findings demonstrate the potential for deep learning to revolutionize cellular biology research by automating and improving image analysis, making large-scale studies more feasible. By refining the model and expanding its application to different cell types and organisms, researchers hope to unlock new insights into cellular structure and function. RNA origami: Artificial cytoskeletons to build synthetic cells microbiologystudy
[259] Deep learning techniques and mathematical modeling allow 3D analysis of ... — Deep learning techniques and mathematical modeling allow 3D analysis of mitotic spindle dynamics ... (Kletter et al., 2022), and therefore a spindle tracker tool can generate a wide impact in cell biology studies across multiple ... we highlighted the strengths of AI-based time-lapse movie analysis in accelerating cytoskeletal research and drug
[273] Artificial Intelligence in Musculoskeletal Medicine: A Scoping Review — The integration of AI algorithms into the clinical workflow must be performed carefully and thoughtfully and be congruent with the existing information technology infrastructure. 141-143 The replication of AI studies on 'real-life' data remains problematic due to the sporadic availability of training data and code and must be addressed
[274] Beyond traditional orthopaedic data analysis: AI, multimodal ... - PubMed — Multimodal artificial intelligence (AI) has the potential to revolutionise healthcare by enabling the simultaneous processing and integration of various data types, including medical imaging, electronic health records, genomic information and real-time data. ... significant challenges remain in data integration, standardisation, and privacy
[275] Deep learning revolutionizes cytoskeleton research — A research team has developed a groundbreaking deep learning-based method for analyzing the cytoskeleton -- the structural framework inside cells -- more accurately and efficiently than ever before. A research team at Kumamoto University has developed a groundbreaking deep learning-based method for analyzing the cytoskeleton -- the structural framework inside cells -- more accurately and efficiently than ever before. To address this, the research team, led by Professor Takumi Higaki from Faculty of Advanced Science and Technology of Kumamoto University, developed an AI-driven segmentation technique that significantly improves the precision of cytoskeleton density measurements. A research team has developed a groundbreaking deep learning-based method for analyzing the cytoskeleton -- the structural framework inside cells -- more accurately and efficiently than ever before.