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The HIV coreceptor switch: a population dynamical perspective.

Roland R Regoes1, Sebastian Bonhoeffer

  • 1Department of Biology, Emory University, 1510 Clifton Rd NE, Atlanta, Georgia 30322, USA. rregoes@emory.edu

Trends in Microbiology
|June 7, 2005
PubMed
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Human immunodeficiency virus (HIV) can switch coreceptor usage from CCR5 to CXCR4 during infection. Understanding the population dynamics of this viral switch is crucial for developing effective treatments.

Area of Science:

  • Virology
  • Immunology
  • Mathematical Biology

Background:

  • Human immunodeficiency virus (HIV) infection involves a shift in coreceptor usage.
  • Approximately 50% of individuals experience a switch from CCR5 to CXCR4 coreceptor preference during infection.
  • This coreceptor tropism switch is linked to complex interactions between the virus and the host immune system.

Purpose of the Study:

  • To review existing hypotheses explaining the emergence of CXCR4-using HIV variants.
  • To highlight the need for quantitative analysis in understanding HIV coreceptor tropism changes.

Main Methods:

  • Literature review of proposed hypotheses for HIV coreceptor switching.
  • Discussion of the necessity for quantitative modeling and analysis.

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Main Results:

  • Several hypotheses exist regarding the mechanisms driving HIV coreceptor tropism changes.
  • Current understanding of molecular processes for viral entry is incomplete regarding population dynamics.

Conclusions:

  • The population dynamical mechanisms underlying HIV coreceptor switching remain poorly understood.
  • Quantitative analysis of virus-host immune cell interactions is essential to validate or refute current hypotheses.