4.2 Article

Implications of Axis Inhibition Protein 2 in Breast Cancer Progression

Journal

IN VIVO
Volume 37, Issue 2, Pages 634-643

Publisher

INT INST ANTICANCER RESEARCH
DOI: 10.21873/invivo.13122

Keywords

Axin2; Snail1; EMT; triple negative breast cancer

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This study investigated the role and mechanism of Axin2 in breast cancer progression. It was found that Axin2, despite being previously identified as a tumor suppressor, exhibits oncogenic effects by mediating Snail1-induced EMT in breast cancer cells. Knockdown of Axin2 decreased cell proliferation, attenuated tumorigenic potential, and altered expression of EMT markers. These findings suggest that Axin2 may be a potential therapeutic target for breast cancer treatment.
Background/Aim: Although axis inhibition protein 2 (Axin2) has been reported to act as a tumour suppressor, recent findings suggest that it exhibits oncogenic effects by mediating Snail1-induced epithelial-mesenchymal transition (EMT) in breast cancer cells. EMT is a crucial biological process involved in the initiation of metastasis in cancer progression. This study elucidated the biological significance and mechanism of Axin2 in breast cancer using transcriptomic and molecular techniques. Materials and Methods: The expression of Axin2 and Snail1 in MDA-MB-231 breast cancer cells was determined by western blotting analysis, and the role of Axin2 in breast cancer tumorigenesis was investigated in xenograft mouse models constructed using pLKO-Tet-shAxin2-transfected triple negative (TN) breast cancer cells. Additionally, the expression levels of EMT markers were determined using qRT-PCR, and clinical data were analysed using Kaplan-Meier (KM) plotter and The Cancer Genome Atlas (TCGA). Results: Axin2 knockdown significantly decreased (p<0.001) the proliferation of MDA-MB-231 cells in vitro and attenuated (p<0.05) the tumorigenic potential of the cells in vivo. Moreover, Axin2 knockdown significantly increased the relative mRNA levels of epithelial markers but decreased the expression of mesenchymal markers in MDA-MB-231 cells. Conclusion: Axin2 may be involved in the progression of breast cancer, particularly triple-negative breast cancer, through the regulation of Snail1-induced EMT, making it a potential therapeutic target.

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