Calorimetric and dynamic light-scattering investigation of cationic surfactant-DNA complexes

Article Abstract:

The conformational behavior of DNA chains after thermal melting in the presence of a cationic surfactant at different concentrations was investigated by means of combined calorimetric and dynamic light-scattering measurements. It was found that although the surfactant-free DNA form undergoes the usual thermal stability, the surfactant-saturated DNA from assumes a rather compact globular conformation and presents a very high thermal stability.

Author: Cametti, C., Marchetti, S., Onori, G.
Analysis, Conformational analysis, Light scattering

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Polymorphism of DNA/Multi-cationic lipid complexes driven by temperature and salts

Article Abstract:

A study was done on the structural polymorphism of DNA/lipopolyamine (multi-cationic lipid) complexes by using X-ray diffraction and cryo-electron microscopy. The series of experiments reported show that the polymorphism of the DNA lipid complexes is driven by the initial state of the cationic lipid.

Author: Raspaud, Eric, Byk, Gerardo, Pitard, Bruno, Scherman, Daniel, Durand, Dominique, Livolant, Francoise, Aguerre-Chariol, Olivier, Pelta, Juan
Optical properties, Chemistry, Physical and theoretical, Physical chemistry, Polymorphism (Crystallography)

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Conformation change of poly(dG-dC).(dG-dC) in cationic polyamine liposome complexes: effect of charge density and flexibility of amine chains in headgroups

Article Abstract:

Transfection mechanisms can be understood by identifying DNA conformation in delivery cargoes. Systematic studies of DNA conformations in various cationic liposome complexes may help developing improved gene delivery systems.

Author: Matsui, Hiroshi, Pan, Su
Polyamines

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Subjects list: Research, DNA
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