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Updated: May 31, 2026

Genome-wide RNAi Screening to Identify Host Factors That Modulate Oncolytic Virus Therapy
Published on: April 3, 2018
Genome-wide screening using RNA interference to study host factors in viral replication and pathogenesis
Laurent Houzet1, Kuan-Teh Jeang
1Molecular Virology Section, Laboratory of Molecular Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892-0460, USA.
Genome-wide RNA interference screens identify crucial host genes for viral infections. This technology advances our understanding of viral pathogenesis and host-pathogen interactions.
Area of Science:
- Molecular Biology
- Virology
- Genetics
Background:
- RNA interference (RNAi) technology, utilizing short interfering RNA and short hairpin RNA, is a powerful tool for gene function discovery.
- RNAi screens have successfully identified numerous genes implicated in cellular processes like signal transduction, cell cycle, and cancer biology.
- The application of RNAi in virology has revealed novel host factors essential for various virus lifecycles.
Purpose of the Study:
- To review recent genome-wide RNAi-based screens in mammalian cells.
- To highlight the identification of essential host factors for viral infection and pathogenesis.
Main Methods:
- Genome-wide RNAi screens in mammalian cells.
- Utilizing short interfering RNA (siRNA) and short hairpin RNA (shRNA) expression libraries.
Main Results:
- Identification of hundreds of previously unknown genes crucial for viral lifecycles.
- Discovery of essential host factors influencing viral infection and pathogenesis.
Conclusions:
- Genome-wide RNAi screens are effective for discovering host factors in viral infections.
- This approach significantly contributes to understanding host-pathogen interactions and viral pathogenesis.
Related Concept Videos
RNA Interference
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
RNA Interference
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
Experimental RNAi
Inhibitors of Viral Protein Synthesis
Viruses with RNA Genomes
Inhibitors Of Virion Release

