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Finding host targets for HIV therapy

C Kimberly Tsui1, Amita Gupta1, Michael C Bassik1

  • 1Departments of Genetics and Chemistry, Engineering and Medicine for Human Health (ChEM-H), Stanford University, Stanford, California, USA.

Nature Genetics
|February 1, 2017
PubMed

Insights

A CRISPR screen revealed host factors crucial for HIV infection in CD4+ T cells. These factors, including CCR5 sulfation and cell aggregation, are potential therapeutic targets for HIV treatment.

Area of Science:

  • Virology
  • Immunology
  • Genetics

Background:

  • Human Immunodeficiency Virus (HIV) infects CD4+ T cells, leading to Acquired Immunodeficiency Syndrome (AIDS).
  • Understanding host factors essential for HIV replication is critical for developing effective antiviral therapies.

Purpose of the Study:

  • To identify host cellular factors required for HIV infection using a CRISPR screening approach.
  • To uncover novel therapeutic targets for HIV intervention by analyzing essential host factors.

Main Methods:

  • Conducted a CRISPR-based genetic screen in a CD4+ T cell leukemia line.
  • Assessed the impact of gene knockouts on HIV infectivity and cell survival.

Main Results:

  • Identified specific host factors indispensable for HIV infection but not for cell viability.
  • Highlighted the role of sulfation on the HIV co-receptor CCR5 in viral entry.
  • Demonstrated the significance of cellular aggregation in the HIV lifecycle.

Conclusions:

  • Host factors identified represent promising targets for novel anti-HIV therapeutics.
  • Targeting CCR5 sulfation or cellular aggregation could inhibit HIV infection with minimal impact on host cell function.

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