Immunologic Research

, Volume 16, Issue 1, pp 15–28 | Cite as

Chemokine receptors as fusion cofactors for human immunodeficiency virus type 1 (HIV-1)

  • Benjamin J. Doranz
  • Joanne F. Berson
  • Joseph Rucker
  • Robert W. Doms


CD4 is the primary cellular receptor for human immunodeficiency virus type 1 (HIV-1), but is not sufficient for entry of HIV-1 into cells. After a decade-long search, the cellular coreceptors that HIV-1 requires in conjunction with CD4 have been identified as members of the chemokine receptor family of seven-transmembrane G-protein coupled receptors. The discovery of distinct chemokine receptors that support entry of T-cell tropic (CXCR-4) and macrophage tropic HIV-1 strains (CCR-5) explains the differences in cell tropism between viral strains, the inability of HIV-1 to infect most nonprimate cells, and the resistance of a small percentage of the population to HIV-1 infection. Further understanding of the role of chemokine receptors in viral entry may also help explain the evolution of more pathogenic forms of the virus, viral transmission, and HIV-induced pathogenesis. These recent discoveries will aid the development of strategies for combating HIV-1 transmission and spread, the understanding of HIV-1 fusion mechanisms, and the possible development of small animal models for HIV-1 drug and vaccine testing.

Key words

HIV Chemokine receptor CXCR-4 CCR-5 Entry Fusion Cofactor 


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Copyright information

© Humana Press Inc 1997

Authors and Affiliations

  • Benjamin J. Doranz
    • 1
  • Joanne F. Berson
    • 1
  • Joseph Rucker
    • 1
  • Robert W. Doms
    • 1
  1. 1.Department of Pathology and Laboratory MedicineUniversity of PennsylvaniaPhiladelphia

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