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Updated: Jul 10, 2025
12:35
Comparison of Three Different Methods for Determining Cell Proliferation in Breast Cancer Cell Lines
Published on: September 3, 2016
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The p53/ZEB1-PLD3 feedback loop regulates cell proliferation in breast cancer
Bo-Wen Liu1,2,3,4, Ning Sun1,2,3,4,5, Hui Lin1,2,3,4,6
1The First Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, 300060, China.
Cell Death & Disease
|November 17, 2023
Summary
Phospholipase D3 (PLD3) inhibits breast cancer cell proliferation by binding to CDK1, causing mitotic arrest. This mechanism involves PLD3 and miR-6796 regulation by p53 and ZEB1, impacting DNA methylation.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Breast cancer is a leading global health concern, particularly for women.
- Phospholipase D3 (PLD3), a member of the phosphodiesterase family, is implicated in tumor development via the AKT pathway.
- Understanding PLD3's role in breast cancer is crucial for developing targeted therapies.
Purpose of the Study:
- To elucidate the molecular mechanism by which PLD3 inhibits breast cancer cell proliferation.
- To investigate the co-expression and regulatory relationship between PLD3 and miR-6796 in breast cancer.
Main Methods:
- Investigated the co-expression of PLD3 and miR-6796 in breast cancer tissues.
- Examined the interaction between PLD3 and CDK1, and its effect on cell proliferation.
- Analyzed the regulatory roles of p53, ZEB1, and DNMT3B in the PLD3/miR-6796 pathway, including DNA methylation.
Main Results:
- PLD3 and miR-6796 were found to be co-expressed in breast cancer.
- PLD3 directly binds to and inhibits CDK1 expression, inducing mitotic arrest and suppressing proliferation.
- A regulatory network involving p53, ZEB1, miR-6796, and DNMT3B controls PLD3 and miR-6796 expression via promoter DNA methylation.
Conclusions:
- PLD3 and its embedded microRNA, miR-6796, play a significant role in regulating breast cancer cell proliferation.
- The study reveals a novel molecular mechanism involving PLD3, CDK1, p53, ZEB1, miR-6796, and DNMT3B.
- These findings offer potential therapeutic targets and prognostic markers for breast cancer treatment.
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