Synthesis and biological activity of anticancer ether lipids that are specifically released by phospholipase A2 in tumor tissue.

Abstract:

:The clinical use of anticancer lipids is severely limited by their ability to cause lysis of red blood cells prohibiting intravenous injection. Novel delivery systems are therefore required in order to develop anticancer ether lipids (AELs) into clinically useful anticancer drugs. In a recent article (J. Med. Chem. 2004, 47, 1694) we showed that it is possible to construct liposome systems composed of masked AELs that are activated by secretory phospholipase A2 in cancerous tissue. We present here the synthesis of six AELs and evaluate the biological activity of these bioactive lipids. The synthesized AEL 1-6 were tested against three different cancer cell lines. It was found that the stereochemistry of the glycerol headgroup in AEL-2 and 3 has a dramatic effect on the cytotoxicity of the lipids. AEL 1-4 were furthermore evaluated for their ability to prevent phosphorylation of the apoptosis regulating kinase Akt, and a correlation was found between their cytotoxic activity and their ability to inhibit Akt phosphorylation.

journal_name

J Med Chem

authors

Andresen TL,Jensen SS,Madsen R,Jørgensen K

doi

10.1021/jm049006f

keywords:

subject

Has Abstract

pub_date

2005-11-17 00:00:00

pages

7305-14

issue

23

eissn

0022-2623

issn

1520-4804

journal_volume

48

pub_type

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