Isolation and characterization of a dideoxyguanosine triphosphate-resistant mutant of human immunodeficiency virus reverse transcriptase

Vinayaka R. Prasad, Israel Lowy, Teresa Los De Santos, Lydia Chiang, Stephen P. Goff

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

The appearance of drug-resistant strains of viral pathogens is a major difficulty confounding current efforts to block viral infections. The identification and analysis of mutations responsible for drug resistance can provide important clues helpful in understanding the mechanisms of resistance and in the eventual development of better therapies. We have used a direct screening method to scan libraries of mutagenized genes encoding the reverse transcriptase of human immunodeficiency virus type 1, and have recovered a variant enzyme that is resistant to the chain-terminator inhibitor 2′,3′-dideoxyguanosine triphosphate. The single substitution mutation in this variant conferred broad crossresistance to a variety of other antiviral compounds currently in clinical trials. Virus carrying the mutation was fully infectious in cultured human lymphocytes. The replication of the mutant virus was highly resistant to phosphonoformic acid but did not show increased resistance to the prod rug dideoxyguanosine.

Original languageEnglish (US)
Pages (from-to)11363-11367
Number of pages5
JournalProceedings of the National Academy of Sciences of the United States of America
Volume88
Issue number24
StatePublished - 1991

Fingerprint

HIV Reverse Transcriptase
Mutation
Foscarnet
Virus Diseases
Virus Replication
Gene Library
Drug Resistance
Antiviral Agents
HIV-1
Clinical Trials
Lymphocytes
Viruses
Enzymes
Pharmaceutical Preparations
triphosphoric acid
Therapeutics

Keywords

  • Chain-terminator inhibitor
  • Drug resistance
  • Retroviral replication
  • RNA-directed DNA polymerase

ASJC Scopus subject areas

  • General
  • Genetics

Cite this

Isolation and characterization of a dideoxyguanosine triphosphate-resistant mutant of human immunodeficiency virus reverse transcriptase. / Prasad, Vinayaka R.; Lowy, Israel; De Santos, Teresa Los; Chiang, Lydia; Goff, Stephen P.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 88, No. 24, 1991, p. 11363-11367.

Research output: Contribution to journalArticle

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