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Pooled CRISPR-Based Genetic Screens in Mammalian Cells
Published on: September 4, 2019
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Genome-wide CRISPR screening identifies a role for ARRDC3 in TRP53-mediated responses
John E La Marca1,2,3,4, Brandon J Aubrey1,2,5, Bruce Yang1,2
1The Walter and Eliza Hall Institute, Parkville, Victoria, Australia.
Cell Death and Differentiation
|December 14, 2023
Summary
The tumor suppressor TRP53 normally inhibits tumor growth. We found that ARRDC3 loss enhances MYC-driven lymphoma survival, revealing ARRDC3 as a key TRP53-regulated tumor suppressor.
Area of Science:
- Genomics
- Cancer Biology
- Molecular Oncology
Background:
- Whole-genome CRISPR screens are vital for identifying novel tumor suppressors and factors influencing anti-cancer agent responses.
- The tumor suppressor TRP53 plays a critical role in regulating cell fate and tumor suppression.
Purpose of the Study:
- To identify novel inhibitors of tumor expansion induced by the tumor suppressor TRP53 in lymphoma cells.
- To investigate the role of Arrestin domain containing 3 (ARRDC3) in MYC-driven lymphoma.
Main Methods:
- Genome-wide CRISPR screening in lymphoma cells.
- In vivo studies involving Arrdc3 deletion in mice.
- Analysis of MYC-driven lymphoma development and response to TRP53-activating anti-cancer agents.
Main Results:
- Absence of ARRDC3 promotes survival and competitiveness of MYC-driven lymphoma cells under TRP53-activating anti-cancer therapy.
- Arrdc3 deletion in mice leads to perinatal lethality with developmental abnormalities, including cardiac defects.
- Loss of ARRDC3 accelerates MYC-driven lymphoma development.
Conclusions:
- ARRDC3 is a novel mediator of TRP53-induced tumor suppression.
- Targeting ARRDC3 may offer new therapeutic strategies for MYC-driven lymphomas and other cancers.
- Understanding ARRDC3's role in development and cancer is crucial for future therapeutic applications.
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