Matrin3 regulates mitotic spindle dynamics by controlling alternative splicing of CDC14B
Bruna R Muys1, Roshan L Shrestha2, Dimitrios G Anastasakis3
1Regulatory RNAs and Cancer Section, Genetics Branch, Center for Cancer Research (CCR), National Cancer Institute (NCI), Bethesda, MD 20892, USA.
Cell Reports
|March 16, 2023
Summary
Matrin3 protein controls cell division in colorectal cancer by regulating CDC14B RNA. This discovery offers new insights into cancer cell dynamics and potential therapeutic targets.
Area of Science:
- Molecular Biology
- Cancer Biology
- Cell Biology
Background:
- Matrin3 is an RNA-binding protein involved in mRNA splicing.
- Its role in cancer, particularly colorectal cancer (CRC), is not well understood.
- Previous research focused on Matrin3's role in neurodegenerative diseases.
Purpose of the Study:
- To investigate the function of Matrin3 in colorectal cancer.
- To identify Matrin3-regulated RNAs and their role in cancer cell processes.
- To elucidate the mechanism of Matrin3-mediated regulation of mitotic spindle dynamics.
Main Methods:
- RNA sequencing to identify Matrin3-bound RNAs in CRC cells.
- Knockdown experiments to assess the functional impact of Matrin3 and CDC14B.
- Overexpression studies to confirm the role of CDC14B as a downstream effector.
Main Results:
- Matrin3 regulates the splicing of CDC14B mRNA, affecting its standard transcript levels.
- Matrin3 knockdown leads to defects in mitotic spindle dynamics, including elongation and misorientation.
- CDC14B knockdown phenocopies these mitotic defects, and CDC14B overexpression rescues them.
Conclusions:
- Matrin3 plays a crucial role in controlling mitotic spindle dynamics in colorectal cancer cells.
- The Matrin3/CDC14B axis is a key regulator of cell division in CRC.
- This axis represents a potential therapeutic target for colorectal cancer treatment.
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