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BMP2 inhibits cell proliferation by downregulating EZH2 in gastric cancer
Zilu Chen1,2, Liyue Yuan3, Xiaopeng Li2
1Department of Thoracic Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
Cell Cycle (Georgetown, Tex.)
|July 20, 2022
Summary
Bone morphogenetic protein-2 (BMP2) acts as a tumor suppressor in gastric cancer by downregulating EZH2 and H3K27me3 via a non-SMAD pathway. This finding suggests BMP2 as a potential therapeutic target for gastric cancer treatment.
Area of Science:
- Oncology
- Molecular Biology
- Epigenetics
Background:
- Gastric cancer is a prevalent gastrointestinal malignancy with complex developmental pathways.
- Bone morphogenetic protein-2 (BMP2) has been implicated in various cancers, potentially through epigenetic modifications.
- The specific role of BMP2 in gastric cancer epigenetics remains to be fully elucidated.
Purpose of the Study:
- To investigate the role of BMP2 in gastric cancer development.
- To determine if BMP2 exerts its effects through epigenetic regulation.
- To explore the potential of BMP2 as a therapeutic target in gastric cancer.
Main Methods:
- Assessed the effects of recombinant human BMP2 (rhBMP2) on gastric cancer cell viability, proliferation, and cell cycle.
- Utilized canonical BMP-SMAD pathway antagonists (LDN-193189, Noggins) to probe signaling mechanisms.
- Employed western blot analysis and lentiviral vectors for EZH2 manipulation to study BMP2-EZH2 interactions.
Main Results:
- rhBMP2 inhibited proliferation and induced cell cycle arrest in HGC-27 and SNU-216 gastric cancer cells.
- Pathway antagonists did not reverse rhBMP2's inhibitory effects, suggesting a non-canonical BMP pathway involvement.
- rhBMP2 downregulated EZH2 and H3K27me3, leading to increased P16/P21 and decreased CDK2/4/6 expression.
Conclusions:
- BMP2 functions as a tumor suppressor in gastric cancer cells.
- BMP2 exerts its tumor-suppressive effects by downregulating EZH2 and H3K27me3 via the non-SMAD BMP pathway.
- BMP2 represents a promising novel therapeutic target for gastric cancer treatment.
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