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RNF149 Promotes HCC Progression through Its E3 Ubiquitin Ligase Activity
Zhaoyu Guo1, Pei Jiang1,2,3, Qian Dong1
1State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China.
Cancers
|November 14, 2023
Summary
Researchers identified RNF149 as a key protein promoting hepatocellular carcinoma (HCC) progression. Upregulation of RNF149 indicates poor prognosis and suggests it could be a therapeutic target for liver cancer.
Area of Science:
- Oncology
- Molecular Biology
- Proteomics
Background:
- Hepatocellular carcinoma (HCC) is a major cause of cancer death with limited treatment options.
- Identifying novel biomarkers and therapeutic targets for HCC is crucial for improving patient outcomes.
Purpose of the Study:
- To investigate the role of RNF149 in HCC development and progression.
- To explore RNF149 as a potential prognostic marker and therapeutic target for HCC.
Main Methods:
- Proteomic profiling of paired early-stage HCC samples.
- Immunohistochemistry (IHC) staining on an independent HCC cohort.
- Functional assays (proliferation, migration, invasion) in HCC cells.
- E3 ubiquitin ligase activity assays and substrate identification.
- Bioinformatics analysis of tumor microenvironment (TME).
Main Results:
- RNF149 was significantly upregulated in HCC tumor tissues and associated with poor prognosis.
- Overexpression of RNF149 promoted HCC cell proliferation, migration, and invasion.
- RNF149's E3 ubiquitin ligase activity drives HCC progression, with DNAJC25 identified as a substrate.
- High RNF149 expression correlated with an immunosuppressive TME in HCC.
Conclusions:
- RNF149 promotes HCC progression through its E3 ubiquitin ligase activity.
- RNF149 may serve as a valuable prognostic marker and therapeutic target for HCC.
- RNF149's role in immune regulation warrants further investigation.
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