| Autor: |
Kirby AJ; University Chemical Laboratory, Cambridge CB2 1EW, UK. ajk1@cam.ac.uk, Camilleri P, Engberts JB, Feiters MC, Nolte RJ, Söderman O, Bergsma M, Bell PC, Fielden ML, García Rodríguez CL, Guédat P, Kremer A, McGregor C, Perrin C, Ronsin G, van Eijk MC |
| Jazyk: |
angličtina |
| Zdroj: |
Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2003 Apr 04; Vol. 42 (13), pp. 1448-57. |
| DOI: |
10.1002/anie.200201597 |
| Abstrakt: |
The superior surfactant properties of cationic gemini surfactants are applied to the complex problem of introducing genes into cells. Of almost 250 new compounds tested, of some 20 different structural types, a majority showed very good transfection activity in vitro. The surfactant is shown to bind and compact DNA efficiently, and structural studies and calculations provide a working picture of the "lipoplex" formed. The lipoplex can penetrate the outer membranes of many cell types, to appear in the cytoplasm encapsulated within endosomes. Escape from the endosome--a key step for transfection--may be controlled by changes in the aggregation behavior of the lipoplex as the pH falls. The evidence suggests that DNA may be released from the lipoplex before entry into the nucleus, where the new gene can be expressed with high efficiency. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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