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M9480576.TXT
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1994-08-20
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Document 0576
DOCN M9480576
TI Synthesis and antiviral activity of 3'-azido-3'-deoxythymidine
triphosphate distearoylglycerol: a novel phospholipid conjugate of the
anti-HIV agent AZT.
DT 9410
AU van Wijk GM; Hostetler KY; Kroneman E; Richman DD; Sridhar CN; Kumar R;
van den Bosch H; Centre for Biomembranes and Lipid Enzymology, Utrecht
University,; Netherlands.
SO Chem Phys Lipids. 1994 Apr 19;70(2):213-22. Unique Identifier : AIDSLINE
MED/94306606
AB Phospholipid conjugates of 3'-azido-3'-deoxythymidine (AZT) show
activity against the human immunodeficiency virus (HIV) in vitro. In a
previous report (K.Y. Hostetler, L.M. Stuhmiller, B.H.M. Lenting, H. van
den Bosch and D.D. Richman (1991), J. Biol. Chem. 265, 6112-6117) the
syntheses and anti-HIV activities of AZT mono- and diphosphate
diglyceride have been described. We now report on the synthesis,
characterization and biological activity of 3'-azido-3'-deoxythymidine
triphosphate distearoylglycerol (AZTTP-DSG). The compound was prepared
by the condensation of AZT diphosphate with distearoylphosphatidic acid
morpholidate in anhydrous pyridine at room temperature and purified by
means of high-performance liquid chromatography using a silica column.
Characterization was performed with 31P-NMR and IR analyses and
determination of the fatty acid, phosphorus and nucleoside content of
the product. AZTTP-DSG inhibited HIV-1 replication in both CEM and
HT4-6C cells at a level intermediate in potency between its mono- and
diphosphate analogs. The IC50 values of AZTTP-DSG were 0.33 and 0.79
microM in these two cell lines, respectively. In addition, AZTTP-DSG was
less toxic to CEM cells in vitro than the other AZT liponucleotides and
reduced viable cell numbers in this cell type by 50% at 1000 microM.
Initial studies on the metabolism of AZTTP-DSG revealed that both AZT
and AZT monophosphate were liberated from the lipid pro-drug by a rat
liver mitochondrial enzyme preparation. These phospholipid derivatives
of AZT nucleotides represent pro-drugs for the intracellular delivery of
phosphorylated antiviral nucleoside analogs.
DE Antiviral Agents/*CHEMICAL SYNTHESIS/ISOLATION & PURIF/ *PHARMACOLOGY
Comparative Study Hela Cells Human HIV/*DRUG EFFECTS HIV
Infections/DRUG THERAPY Phosphatidic Acids/*CHEMICAL
SYNTHESIS/ISOLATION & PURIF/ *PHARMACOLOGY Support, U.S. Gov't,
Non-P.H.S. Support, U.S. Gov't, P.H.S. Zidovudine/*ANALOGS &
DERIVATIVES/CHEMICAL SYNTHESIS/ISOLATION & PURIF/PHARMACOLOGY JOURNAL
ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).