Comparison of the effect of Carbovir, AZT, and dideoxynucleoside triphosphates on the activity of human immunodeficiency virus reverse transcriptase and selected human polymerases

Academic Article


  • Carbocylic 2′,3′-didehydro-2′,3′-dideoxyguanosine (Carbovir; NSC 614846) is an antiretroviral agent which may be useful in the treatment of AIDS. We have synthesized the 5′-triphosphate of Carbovir and examined its ability to inhibit human immunodeficiency virus type 1 (HIV-1) reverse transcriptase (EC and other retroviral reverse transcriptases, as well as human DNA polymerases α, β, γ (EC and DNA primase (EC Carbovir triphosphate emerges as a highly selective inhibitor of reverse transcriptases with little, if any, effect on the cellular enzymes. 3′-Azido-2′,3′-dideoxythymidine (AZT) triphosphate and the two dideoxynucleoside triphosphates, ddTTP and ddGTP, inhibited HIV-1 reverse transcriptase to the same degree as Carbovir triphosphate, but were less selective in that they also inhibited DNA polymerases β and γ. We conclude that Carbovir is a highly selective antiretroviral agent. © 1989.
  • Digital Object Identifier (doi)

    Pubmed Id

  • 19625909
  • Author List

  • White EL; Parker WB; Macy LJ; Shaddix SC; McCaleb G; Secrist JA; Vince R; Shannon WM
  • Start Page

  • 393
  • End Page

  • 398
  • Volume

  • 161
  • Issue

  • 2