Efficient nucleic acid transduction with lipoplexes containing novel piperazine- and polyamine-conjugated cholesterol derivatives
摘要:
To advance the use of cationic lipids for non-viral nucleic acid vector formulation, a panel of novel nitrogen heterocycle cholesteryl derivatives containing a biodegradable carbamate linker was synthesised. Optimally acting piperazine and cyclen compounds had nucleic acid-binding and lipoplex nanoparticle formation properties that were suitable for their use as non-viral vectors. It was found that the lipoplexes formed were capable of efficient non-toxic nucleic acid delivery to cells in culture. The chemical structure of individual cationic lipids, which is likely to influence lipoplex formation, affected efficiency of DNA or RNA transfection. The results indicated that the cyclen containing compound possessing two cholesteryl moieties resulted in efficient siRNA-mediated target gene silencing but was a poor reagent for DNA transfection. (C) 2008 Elsevier Ltd. All rights reserved.
The invention provides bradykinin antagonists and pharmaceutically acceptable salts thereof having anti-cancer activity. These anti-cancer compounds are particularly useful for inhibiting the growth of lung and prostate cancers.
Efficient nucleic acid transduction with lipoplexes containing novel piperazine- and polyamine-conjugated cholesterol derivatives
作者:Rafique Ul Islam、Justin Hean、Willem A.L. van Otterlo、Charles B. de Koning、Patrick Arbuthnot
DOI:10.1016/j.bmcl.2008.11.009
日期:2009.1
To advance the use of cationic lipids for non-viral nucleic acid vector formulation, a panel of novel nitrogen heterocycle cholesteryl derivatives containing a biodegradable carbamate linker was synthesised. Optimally acting piperazine and cyclen compounds had nucleic acid-binding and lipoplex nanoparticle formation properties that were suitable for their use as non-viral vectors. It was found that the lipoplexes formed were capable of efficient non-toxic nucleic acid delivery to cells in culture. The chemical structure of individual cationic lipids, which is likely to influence lipoplex formation, affected efficiency of DNA or RNA transfection. The results indicated that the cyclen containing compound possessing two cholesteryl moieties resulted in efficient siRNA-mediated target gene silencing but was a poor reagent for DNA transfection. (C) 2008 Elsevier Ltd. All rights reserved.
ANTI-CANCER COMPOUNDS
申请人:Stewart John M.
公开号:US20090088454A1
公开(公告)日:2009-04-02
The invention provides bradykinin antagonists and pharmaceutically acceptable salts thereof having anti-cancer activity. These anti-cancer compounds are particularly useful for inhibiting the growth of lung and prostate cancers.