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In Vitro Ubiquitination and Deubiquitination Assays of Nucleosomal Histones
Published on: July 25, 2019
Deubiquitinase OTUD7B Regulates Cell Proliferation in Breast Cancer
Xiu Zhang1, Peng Zhang1, Xiang Chen1
1Central Laboratory, Affiliated Hospital of Hebei University, Baoding, Hebei Province, China.
The deubiquitylase OTUD7B acts as a tumor suppressor in breast cancer, inhibiting cell growth and invasion by disrupting the RAS signaling pathway. Its high expression correlates with better patient survival, revealing an anti-oncogenic role.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- The deubiquitylase OTUD7B is implicated in lung tumorigenesis.
- Its specific role in breast cancer pathogenesis is not well understood.
Purpose of the Study:
- To investigate the role of OTUD7B in breast cancer.
- To explore OTUD7B's function in breast cancer cell proliferation and invasion.
Main Methods:
- Assessed OTUD7B expression in breast cancer tissues and adjacent normal tissues.
- Examined OTUD7B's impact on MCF-7 and MDA-MB-453 breast cancer cell lines' proliferation and invasion.
Main Results:
- OTUD7B is overexpressed in human breast cancer tissues.
- Higher OTUD7B expression is associated with improved patient survival.
- OTUD7B interacts with RASGRF1 and PLCE1, inhibiting the RAS signaling pathway.
- OTUD7B knockdown reduces RASGRF1 levels, suppressing breast cancer cell growth and invasion.
Conclusions:
- OTUD7B exhibits an anti-oncogenic function in breast cancer by modulating the RAS signaling pathway.
- Deubiquitylases can have context-dependent tumor-suppressing or tumor-promoting activities.
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