World journal of surgical oncology · 2026
miR-4326 predicts adverse outcomes of triple-negative breast cancer and regulates cell growth and motility through modulating MED13.
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Wang Weina, Zhang Xinyu, Kong Linna, Liu Jiaqi, Zhang Huihui, Chu Jun, Dai Peng
Аннотация
BACKGROUND: Triple-negative breast cancer (TNBC) is one of the most malignant subtypes of breast cancer with a high recurrence rate and adverse prognosis. Due to the lack of reliable molecular targets, improving patients' outcomes is still a challenge in the clinic. The clinical significance of miR-4326 and its potential in mediating tumor progression were investigated in this study, aiming to explore a novel biomarker for TNBC.
METHODS: A total of 108 patients diagnosed with TNBC were included in the present study, and the tissue samples were collected. The expression of miR-4326 was evaluated using PCR, while its clinical significance was assessed from the perspectives of disease severity and 5-year prognosis. In vitro, the regulation of TNBC cell growth and motility by miR-4326 was evaluated by CCK8 and Transwell assays with the help of cell transfection.
RESULTS: Upregulation of miR-4326 was observed in tumor tissues of TNBC patients, which indicates advanced TNM stage, the occurrence of lymph node metastasis, and poorer prognosis. In TNBC cells, miR-4326 was also upregulated, its knockdown significantly suppressed cell proliferation, migration, and invasion. MED13 showed opposite dysregulation and was negatively regulated by miR-4326. Silencing MED13 could reverse the suppressive effect of miR-4326 knockdown on TNBC cells.
CONCLUSIONS: miR-4326 could serve as a prognostic biomarker for TNBC and regulate tumor progression via targeting MED13.
METHODS: A total of 108 patients diagnosed with TNBC were included in the present study, and the tissue samples were collected. The expression of miR-4326 was evaluated using PCR, while its clinical significance was assessed from the perspectives of disease severity and 5-year prognosis. In vitro, the regulation of TNBC cell growth and motility by miR-4326 was evaluated by CCK8 and Transwell assays with the help of cell transfection.
RESULTS: Upregulation of miR-4326 was observed in tumor tissues of TNBC patients, which indicates advanced TNM stage, the occurrence of lymph node metastasis, and poorer prognosis. In TNBC cells, miR-4326 was also upregulated, its knockdown significantly suppressed cell proliferation, migration, and invasion. MED13 showed opposite dysregulation and was negatively regulated by miR-4326. Silencing MED13 could reverse the suppressive effect of miR-4326 knockdown on TNBC cells.
CONCLUSIONS: miR-4326 could serve as a prognostic biomarker for TNBC and regulate tumor progression via targeting MED13.