Metabolic Signaling Overview

Principles

Definition

Metabolic signaling is an interdisciplinary research field that investigates how metabolic processes and their associated molecules influence cellular communication and regulatory networks. This concept explores the mechanisms by which metabolic intermediates, enzyme activities, and energy states act as signals to control cellular function, gene expression, and physiological processes, providing crucial insights into both physiological regulation and the pathogenesis of metabolic diseases.

Ontological type

Disease Implications

Cellular Pathways

Molecular Mediators

Key developments

Key Figures

Hormone-Receptor Integration era

Louis Sokoloff [1] was a leading figure in metabolic signaling research during the Hormone-Receptor Integration era, with affiliations noted at Harvard University [2] and the University of California, San Francisco [3]. His key contribution, the [14C]deoxyglucose method [4], provided a quantitative tool to measure local cerebral glucose utilization and link energy metabolism to neural and hormonal regulation in this era. Sokoloff's approach [1] to mapping cerebral glucose utilization helped institutionalize a receptor-centered view of metabolic signaling that connected nutrient states to tissue metabolism. This legacy, advanced by Sokoloff [1], remains foundational for understanding endocrine and receptor-driven regulation of metabolism.

Nutrient-Energy Sensing Networks era

Johan Auwerx [1], affiliated with Harvard University [3] and the University of California, San Francisco [4] during this era, helped shape nutrient-energy sensing research. His key contribution from the provided paper Resveratrol Improves Mitochondrial Function and Protects against Metabolic Disease by Activating SIRT1 and PGC-1α [6] includes showing that resveratrol activates SIRT1 [6] and PGC-1α [6], thereby improving mitochondrial function and metabolic health and linking nutrient sensing to mitochondrial biogenesis and insulin responsiveness. Markku Laakso [2] is associated with the University of California, San Francisco [4] and The University of Texas Health Science Center at San Antonio [5] during this era. Laakso's key contribution from the same Resveratrol paper [6] was to translate the mechanistic insights into human metabolic context, reinforcing the era's focus on metabolic signaling networks by illustrating how the SIRT1–PGC-1α axis can influence mitochondrial function and systemic energy balance [6].

Metabolite-Mediated Interorgan Signaling era

Marco Colonna [1], affiliated with Washington University in St. Louis [2] and the University of Toronto [3], has become a leading figure in immunometabolic signaling during the Metabolite-Mediated Interorgan Signaling era. His key contribution, as captured in the 2016 paper Metabolic Reprogramming Mediated by the mTORC2-IRF4 Signaling Axis Is Essential for Macrophage Alternative Activation [4], is the demonstration that the mTORC2-IRF4 signaling axis drives metabolic reprogramming essential for macrophage alternative activation, revealing how immune cell metabolism shapes broader immunometabolic signaling and potentially systemic energy homeostasis in this era.