Erbin Inhibited Angiogenesis in Vitro with the Inhibition on the STAT3 Pathway in Breast Cancer Cells

Area of Science:

• Oncology
• Molecular Biology
• Cell Biology

Background:

• Tumor angiogenesis is crucial for breast cancer growth and metastasis.
• Targeting angiogenesis is a key strategy in cancer therapy.
• Erbin's role in breast cancer angiogenesis is not fully understood.

Purpose of the Study:

• To investigate the effect of Erbin on breast cancer cell-induced angiogenesis.
• To elucidate the mechanism by which Erbin influences angiogenesis.
• To assess Erbin's potential as a therapeutic target.

Main Methods:

• Utilized human breast cancer cell lines (SKBR3, MCF-7) with Erbin overexpression and silencing.
• Employed Western blot, qRT-PCR, CLEIA, CCK-8, and Matrigel Tube Formation Assay.
• Analyzed protein and mRNA expression, VEGF levels, cell proliferation, and HUVEC angiogenic ability.

Main Results:

• Lower Erbin and higher VEGF expression observed in SKBR3 vs. MCF-7 cells.
• Erbin overexpression downregulated VEGF and pSTAT3; Erbin silencing upregulated them.
• Erbin modulated HUVEC proliferation and tube formation in vitro.

Conclusions:

• Erbin inhibits proangiogenic effects of breast cancer cells.
• Erbin suppresses angiogenesis by inhibiting the STAT3 pathway.
• Erbin shows potential as a therapeutic target for breast cancer.