Preexposure prophylaxis with albumin-conjugated C34 peptide HIV-1 fusion inhibitor in SCID-hu Thy/Liv mice

Antimicrob Agents Chemother. 2012 Apr;56(4):2162-5. doi: 10.1128/AAC.05015-11. Epub 2012 Jan 17.

Abstract

PC-1505 is a C34 peptide derived from the heptad repeat 2 region of HIV-1 gp41 conjugated to human serum albumin for sustained in vivo activity. One single preexposure dose of PC-1505 reduced viral RNA in HIV-1-infected SCID-hu Thy/Liv mice by 3.3 log₁₀ and protected T cells from virus-mediated depletion. In contrast, a single preexposure dose of Truvada reduced viral RNA by only 0.8 log₁₀ and was substantially less effective in preventing T cell depletion.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Deoxycytidine / analogs & derivatives
  • Deoxycytidine / pharmacology
  • Dose-Response Relationship, Drug
  • Drug Combinations
  • Emtricitabine, Tenofovir Disoproxil Fumarate Drug Combination
  • Genes, MHC Class I / genetics
  • HIV Core Protein p24 / blood
  • HIV Fusion Inhibitors / chemistry
  • HIV Fusion Inhibitors / pharmacology*
  • HIV Infections / prevention & control*
  • HIV Infections / virology
  • Mice
  • Mice, SCID
  • Organophosphorus Compounds / pharmacology
  • Peptides / chemistry
  • Peptides / pharmacology*
  • RNA, Viral / blood
  • Thymocytes / drug effects
  • Thymocytes / metabolism
  • Thymocytes / virology

Substances

  • Drug Combinations
  • Emtricitabine, Tenofovir Disoproxil Fumarate Drug Combination
  • HIV Core Protein p24
  • HIV Fusion Inhibitors
  • Organophosphorus Compounds
  • PC 1505
  • Peptides
  • RNA, Viral
  • Deoxycytidine