Abstract
The synthesis and biophysical characterization of four prodrug ether phospholipid conjugates are described. The lipids are prepared from the anticancer drug chlorambucil and have C16 and C18 ether chains with phosphatidylcholine or phosphatidylglycerol headgroups. All four prodrugs have the ability to form unilamellar liposomes (86-125 nm) and are hydrolyzed by phospholipase A(2), resulting in chlorambucil release. Liposomal formulations of prodrug lipids displayed cytotoxicity toward HT-29, MT-3, and ES-2 cancer cell lines in the presence of phospholipase A(2), with IC(50) values in the 8-36 microM range.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Antineoplastic Agents, Alkylating / chemical synthesis*
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Antineoplastic Agents, Alkylating / pharmacology
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Cell Line, Tumor
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Cell Survival / drug effects
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Chlorambucil / analogs & derivatives*
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Chlorambucil / chemical synthesis
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Chlorambucil / pharmacology
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Drug Screening Assays, Antitumor
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Humans
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Hydrolysis
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Inhibitory Concentration 50
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Liposomes
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Phospholipases A2 / metabolism
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Phospholipid Ethers / chemical synthesis
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Prodrugs / chemical synthesis*
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Prodrugs / metabolism
Substances
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Antineoplastic Agents, Alkylating
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Liposomes
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Phospholipid Ethers
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Prodrugs
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Chlorambucil
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Phospholipases A2