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A Virus-Packageable CRISPR System Identifies Host Dependency Factors Co-Opted by Multiple HIV-1 Strains
Vanessa R Montoya1, Trine M Ready2, Abby Felton2
1Molecular and Cellular Biology Graduate Program, University of Washington, Seattle, Washington, USA.
Mbio
|February 6, 2023
Summary
Researchers identified essential host cellular proteins, termed HIV dependency factors, that the human immunodeficiency virus (HIV) hijacks for replication. These factors are crucial for viral infection across various HIV strains.
Area of Science:
- Virology
- Molecular Biology
- Genetics
Background:
- Human immunodeficiency virus (HIV) relies on host cellular proteins to replicate.
- Identifying these host dependency factors is crucial for understanding viral infection mechanisms.
Purpose of the Study:
- To comprehensively identify host factors essential for HIV replication using genome-wide CRISPR screening.
- To determine which host factors are critical across different HIV strains and biological properties.
Main Methods:
- Adapted virus-packageable HIV-CRISPR screening technology for genome-wide analysis in human T cells.
- Performed targeted screens using an HIV Dependency Factor (HIVDEP) sublibrary across diverse HIV strains.
Main Results:
- Identified numerous host proteins essential for HIV replication, including novel factors like UBE2M, MBNL1, FBXW7, PELP1, and SLC39A7.
- Validated nearly 90% of identified genes as bona fide host dependency factors.
- Generated a ranked list of dependency factors across multiple HIV-1 strains.
Conclusions:
- Host cellular machinery is extensively hijacked by HIV, highlighting numerous dependency factors critical for viral replication.
- The identified host dependency factors provide a valuable resource for future research into HIV-host interactions.
Keywords:
CRISPR screenT cellsdependency factorhuman immunodeficiency virustranscription factorsvirus replicationMore Related Videos
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