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Synthetic CD4 exocyclics inhibit binding of human immunodeficiency virus type 1 envelope to CD4 and virus replication in T lymphocytes

Nature Biotechnology volume 15, pages 150–154 (1997)Cite this article

Abstract

CD4 functions as a major T-cell surface receptor for human immunodeficiency virus by binding the human immunodeficiency virus type 1 (HIV-1) envelope protein gp120 with relatively high affinity. We have developed constrained aromatically modified analogs of the secondary structures of the first domain of CD4 in order to analyze surfaces involved in binding of gp120. Complementarity determining-like regions (CDRs) of the D1 domain of CD4 were reproduced as synthetic aromatically modified exocyclic (AMEs) forms. The exocyclic CDR3.AME(82-89), derived from the CDRS (residues 82-89) region of CD4 D1 domain, specifically inhibited binding of recombinant gp120 to both recombinant soluble CD4, and CD4+ Jurkat cells, and blocked syncytium formation and virus particle production caused by HIV-1 infection. We have previously shown that the CDR3.AME analog binds to the CD4 CDR3 region and creates a disabled CD4 heterodimer. We propose that the AME prevents the formation of an essential homodimeric surface needed for efficient HIV binding. Additionally the disabled CD4 receptor may be less able to signal the cell to allow HIV replication and HIV infection. Such compounds may represent a new receptor specific approach to modulate biological functions.

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Author notes

  1. Mark I. Greene: Corresponding author.

Authors and Affiliations

  1. Department of Pathology and Laboratory Medicine, School of Medicine, and Center for Receptor Biology, University of Pennsylvania School of Medicine, Philadelphia, PA, 19104-6082

    Xin Zhang, Ramachandran Murali, David Weiner & Mark I. Greene

  2. Génétique Moléculaire et Biologie du Développement, UPR 420, Centre National de la Recherche Scientifique, Villejuif, France

    Muriel Gaubin, Monica Autiero & Dominique Piatier-Tonneau

  3. Laboratoire d'lmmunologie des Infections Rétrovirales, Centre National de la Recherche Scientifique, ERS 155, Montpellier, France

    Laurence Briant & Christian Devaux

  4. Department of Surgery, Uniformed Service University of the Health Sciences, Bethesda, MD

    Vasantha Srikantan

  5. Department of Pharmacology, McGill University, Montreal, Quebec, Canada

    Uri Saragovi

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Zhang, X., Gaubin, M., Briant, L. et al. Synthetic CD4 exocyclics inhibit binding of human immunodeficiency virus type 1 envelope to CD4 and virus replication in T lymphocytes . Nat Biotechnol 15, 150–154 (1997). https://doi.org/10.1038/nbt0297-150

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