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DNA-lipid systems. An amphiphile self-assembly and polymer-surfactant perspective
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2002 (English)In: Progress in Colloid and Polymer Science, ISSN 0340-255X, E-ISSN 1437-8027, Vol. 120, p. 52-63Article in journal (Refereed)
Abstract [en]

The interaction between DNA and oppositely charged surfactants has been investigated by several techniques, like fluorescence microscopy, electron microscopy, phase diagram determination, and ellipsometry. The phase behaviour is more strongly associative than that in previously studied systems. A precipitate is formed for very low amounts of surfactant and DNA. DNA compaction is a general phenomenon in the presence of multivalent ions and positively charged surfaces; because of the high charge density there are strong attractive ion correlation effects. The interaction between DNA and catanionic mixtures (i.e., mixtures of cationic and anionic surfactants) was also investigated. We observed that DNA compacts and adsorbs onto the surface of positively charged vesicles and that the addition of anionic surfactant can release free DNA back into solution from a compact globular complex between DNA and cationic surfactant. Finally, we investigated DNA interactions with polycations, chitosans with different chain lengths, by fluorescence microscopy, in vivo transfections assays and cryogenic transmission electron microscopy. The general conclusion is that a chitosan effective in promoting compaction is also efficient in transfection

Place, publisher, year, edition, pages
2002. Vol. 120, p. 52-63
Keywords [en]
DNA, cationic surfactants, catanionic mixtures, chitosan, phase behaviour
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-27403OAI: oai:DiVA.org:ri-27403DiVA, id: diva2:1054407
Note
A1501Available from: 2016-12-08 Created: 2016-12-08 Last updated: 2017-11-29Bibliographically approved

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