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Metformin inhibits the development and metastasis of ovarian cancer
1Department of Obstetrics and Gynecology, Ren-Ji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, PR China.
Abstract:
The aim of this study was to investigate the role of metformin in the regulation of development and metastasis of ovarian carcinoma cell lines in vitro and ovarian cancer in a nude mouse model in vivo. The effects of metformin on the ability of two high-metastatic potential human ovarian cancer cell lines (SKOV3 and HO8910-PM) to adhere, invade and migrate in vitro were observed by means of a cell adhesion test, cell invasion test and cell migration test. The size and number of the inoculated and metastatic tumours in vivo in a nude mouse were determined following intraperitoneal injection of metformin. Furthermore, the extent of angiogenesis (vWF) and macrophage infiltration in the tumour were determined. Proliferation, migration, invasion and adhesion of ovarian cancer cells were significantly inhibited (P<0.05) in a dose-dependent manner in vitro. In addition, metformin inhibited hepatic, intestinal and lung metastasis (P<0.05), with no weight loss in vivo, consistent with decreased expression of vWF and macrophage infiltration. Our data suggest that metformin inhibits the development and metastasis of ovarian cancer by reducing cellular-ECM interactions, neovascularisation and macrophage infiltration.
Insights
Metformin significantly inhibits ovarian cancer cell development and metastasis in vitro and in vivo. It reduces cell adhesion, invasion, and migration, while also decreasing angiogenesis and macrophage infiltration.
Area of Science:
- Oncology
- Pharmacology
- Cell Biology
Background:
- Ovarian cancer is a leading cause of cancer-related deaths in women.
- Metformin, a common diabetes drug, has shown potential anti-cancer properties.
- Understanding metformin's mechanism in ovarian cancer is crucial for therapeutic development.
Purpose of the Study:
- To investigate metformin's role in regulating ovarian cancer cell development and metastasis.
- To assess metformin's effects on ovarian cancer cell adhesion, invasion, and migration in vitro.
- To evaluate metformin's impact on tumor growth, metastasis, angiogenesis, and macrophage infiltration in vivo.
Main Methods:
- In vitro studies utilized cell adhesion, invasion, and migration tests on ovarian cancer cell lines (SKOV3, HO8910-PM).
- In vivo studies involved administering intraperitoneal metformin to nude mice bearing ovarian tumors.
- Tumor size, metastatic tumor count, angiogenesis (vWF), and macrophage infiltration were quantified.
Main Results:
- Metformin demonstrated a dose-dependent inhibition of ovarian cancer cell proliferation, migration, invasion, and adhesion in vitro (P<0.05).
- In vivo, metformin significantly inhibited hepatic, intestinal, and lung metastasis (P<0.05) without causing weight loss.
- Decreased expression of von Willebrand Factor (vWF) and reduced macrophage infiltration were observed in tumors.
Conclusions:
- Metformin effectively inhibits ovarian cancer development and metastasis.
- The drug's action involves reducing cellular-extracellular matrix interactions, neovascularization, and macrophage infiltration.
- Metformin presents a promising therapeutic agent for ovarian cancer treatment.
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