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. 1993 Jan;37(1):130–133. doi: 10.1128/aac.37.1.130

Generation of drug-resistant variants of human immunodeficiency virus type 1 by in vitro passage in increasing concentrations of 2',3'-dideoxycytidine and 2',3'-dideoxy-3'-thiacytidine.

Q Gao 1, Z Gu 1, J Hiscott 1, G Dionne 1, M A Wainberg 1
PMCID: PMC187620  PMID: 8381634

Abstract

We selected in vitro human immunodeficiency virus type 1 variants that are resistant to each of 2',3'-dideoxycytidine (ddC) and the racemic mixture of 2',3'-dideoxy-3'-thiacytidine (BCH-189). The median effective concentrations of ddC and BCH-189 obtained for the resistant viruses ranged between 10 and 50 times above those for parental wild-type strains, and extensive cross-resistance was observed against 2',3'-dideoxyinosine (ddI) but not 3'-azido-3'-deoxythymidine (AZT). Two dimer compounds, in which either AZT and ddI or AZT and BCH-189 were linked through phosphodiester linkages, did not permit the emergence of variants resistant to BCH-189, ddI, or AZT but were ineffective at inhibiting the replication of AZT-resistant viruses.

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Selected References

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