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Related Experiment Videos

The CD4-gp120 interaction and AIDS pathogenesis.

D J Capon1, R H Ward

  • 1Genentech Inc., South San Francisco, California 94080.

Annual Review of Immunology
|January 1, 1991
PubMed
Summary
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Human immunodeficiency virus (HIV) infection destroys CD4+ T cells, leading to AIDS. Targeting the HIV gp120 and CD4 interaction is a key strategy for developing AIDS therapeutics.

Area of Science:

  • Immunology
  • Virology
  • Cell Biology

Background:

  • Human immunodeficiency virus (HIV) infection causes progressive destruction of CD4+ T lymphocytes, leading to acquired immunodeficiency syndrome (AIDS).
  • The selective targeting of CD4+ cells is mediated by the binding of HIV's external envelope glycoprotein, gp120, to the CD4 receptor on T cells, facilitating viral entry.
  • This interaction may also contribute to CD4+ cell depletion through immune responses and disrupt T cell function by interfering with CD4-mediated signaling.

Purpose of the Study:

  • To highlight the critical role of the CD4-gp120 interaction in HIV pathogenesis.
  • To identify the CD4-gp120 interaction as a primary target for therapeutic interventions against AIDS.

Main Methods:

  • This study is a review of existing research on HIV-CD4 interactions.

Related Experiment Videos

  • Analysis of viral entry mechanisms and T cell destruction pathways.
  • Examination of the CD4 receptor's role in cellular signaling and immune function.

    • Main Results:

    • The binding of HIV gp120 to CD4 is essential for viral entry into T lymphocytes.
    • This specific interaction triggers the depletion of CD4+ T cells, a hallmark of AIDS.
    • Disruption of CD4-mediated signaling pathways by the gp120-CD4 complex impairs T cell function.

    Conclusions:

    • The specific interaction between HIV gp120 and the CD4 receptor is a central mechanism in HIV pathogenesis.
    • Interfering with the CD4-gp120 binding represents a rational and promising therapeutic strategy for combating HIV/AIDS.