The Journal of Physical Chemistry B · 2007 · 42 citations · 29 references
Natural SciencesBiochemistryBiophysicsGene DeliveryPolymer ChemistryPolymer MaterialsBiological MembranesLipid Bilayer StructureLipid BilayersLipid StructurePolymer PhysicsPolymer StructureBlack Lipid MembranesContrast VariationDeoxyribonucleic Acid (Dna) StructureLight ScatteringLight Scattering AnalysisLipid Bilayer MembranesPolymer-dna ComplexesStructure Factors
Small angle neutron (SANS) and light scattering was used to study the interaction between fragments of double stranded deoxyribonucleic acid (DNA) and a synthetic triblock [poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide)] amphiphilic polymer, known as L64, a potential vector for gene therapy. The mechanism of action of this vector is yet unknown. The contrast variation method was used to separate the partial structure factors of the different components in mixtures of triblock and DNA. It has been found that the copolymer and DNA molecules exhibit repulsive interactions. Further, the interaction between the copolymer and a model lipid membrane was investigated in order to explain the action of the vector. Electrical measurements on black lipid membranes indicated that the main effect of L64 as a vector is to permeabilize the cell's membrane.
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Gene therapy - promises, problems and prospects
Inder M. Verma, Nikunj V. Somia · Nature · 1997 · 1.7K citations