CD4 peptide-protein conjugates, but not recombinant human CD4, bind to recombinant gp120 from the human immunodeficiency virus in the presence of serum from AIDS patients

Victor Ghetie, Clive Slaughter, H. Thomas Wheeler, Jonathan W. Uhr, Ellen S. Vitetta

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Sera from human immunodeficiency virus-positive (HIV+; Walter Reed stage 6) individuals inhibit the interaction between recombinant human CD4 and recombinant gp110 from HIV (rCD4 and rgp120, respectively), thereby interfering with the ability of soluble rCD4 to block infection with HIV or rCD4-toxin conjugates to kill HIV-infected cells. In this report we demonstrate that the inhibitory activity of such sera is caused primarily by anti-gp120 antibodies that do not recognize the CD4 interaction site on gp120. To circumvent the problem of inhibition, we have generated a construct containing a peptide of CD4 (residues 41-84) conjugated to ovalbumin (three to five peptides per molecule). This multivalent conjugate binds to rgp120 and binding is not inhibited by antibodies in HIV+ sera.

Original languageEnglish (US)
Pages (from-to)5690-5693
Number of pages4
JournalProceedings of the National Academy of Sciences of the United States of America
Volume88
Issue number13
DOIs
StatePublished - Jul 1 1991

Keywords

  • CD4 peptide
  • Human immunodeficiency virus-positive serum
  • gp120

ASJC Scopus subject areas

  • General

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