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Related Experiment Videos

Cellular adherence enhances HIV replication in monocytic cells

R J Shattock1, G E Griffin

  • 1Division of Communicable Diseases, St. George's Hospital Medical School, Tooting, London, U.K.

Research in Virology
|May 1, 1994
PubMed
Summary

Cellular adherence, crucial for monocyte function, significantly enhances human immunodeficiency virus (HIV) replication in monocytes. Specific adhesion molecule engagement, like LFA-1 and MHC II, boosts HIV replication, highlighting adherence as a key regulatory factor.

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Area of Science:

  • Immunology
  • Virology
  • Cell Biology

Background:

  • Cellular adherence is vital for monocyte migration, activation, and intracellular signaling.
  • Adherence can potentially enhance human immunodeficiency virus (HIV) replication in monocytic cells.

Purpose of the Study:

  • To investigate the impact of cellular adherence on HIV replication in monocytic cells.
  • To determine the role of specific adhesion molecules in modulating HIV replication.

Main Methods:

  • Utilized THP-1 monocytic cell line transfected with HIV LTR CAT constructs to assess adherence effects.
  • Employed immobilized antibodies to engage specific adhesion molecules (CD18, LFA-1, MHC II) on OM101 cells harboring latent HIV.

Main Results:

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  • Adherence to plastic or endothelial cells enhanced HIV LTR CAT expression in stimulated cells.
  • Engagement of CD18, LFA-1, and MHC II significantly increased HIV replication in promonocytic cells.
  • LFA-1 and MHC II mediate crucial cell-cell interactions that influence HIV replication.

Conclusions:

  • Cellular adherence is a critical regulatory factor in HIV replication within monocytic cells.
  • Interactions involving adhesion molecules like LFA-1 and MHC II promote HIV replication in vivo.
  • Targeting adhesion molecule interactions may offer strategies to control HIV persistence.