RNF6 Inhibits Lung Adenocarcinoma Cell Proliferation by Promoting Cyclin D2 Degradation
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View abstract on PubMed
Summary
This summary is machine-generated.RING finger protein 6 (RNF6) suppresses lung adenocarcinoma (LUAD) by degrading cyclin D2 (CCND2), inhibiting cell proliferation and tumor growth. This discovery offers a new therapeutic target for LUAD treatment.
Area Of Science
- Oncology
- Molecular Biology
- Cell Cycle Regulation
Background
- RING finger protein 6 (RNF6) is typically an E3 ubiquitin ligase promoting tumorigenesis.
- RNF6 is paradoxically downregulated in lung adenocarcinoma (LUAD), with its tumor-suppressive role unclear.
Purpose Of The Study
- To elucidate the molecular mechanism of RNF6's function in LUAD.
- To investigate RNF6's role in LUAD cell proliferation, migration, and chemotherapy sensitivity.
Main Methods
- Affinity purification coupled with tandem mass spectrometry (MS-MS) to identify RNF6-interacting proteins.
- Western blotting and ubiquitination assays to assess protein stability and degradation.
- Cell cycle analysis and in vivo xenograft models to evaluate RNF6 function.
Main Results
- RNF6 inhibits LUAD cell proliferation and migration, and sensitizes cells to chemotherapy.
- RNF6 directly binds to cyclin D2 (CCND2), mediating its K48-linked polyubiquitination and degradation.
- RNF6 arrests the LUAD cell cycle at G1 phase by inhibiting the CCND2/phospho-Rb pathway, reducing tumor growth in vivo.
Conclusions
- RNF6 acts as a novel E3 ligase for CCND2, suppressing LUAD cell proliferation.
- The RNF6/CCND2 axis represents a potential therapeutic target for LUAD treatment.
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