Hereditas · 2026
miR-596 as a novel prognostic biomarker and tumor suppressor in breast cancer through targeting EIF5AL1.
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Huang Rui, Jiang Yan, Bian Yan, Zhong Dengyuan, Lv Baoyong
Аннотация
BACKGROUND: In terms of global incidence and mortality, breast cancer continues to surpass all other cancers affecting women.
METHODS: To explore the role of miR-596, qRT-PCR was applied to measure its expression in tissue and cell samples from 137 enrolled subjects. The regulatory interaction between miR-596 and EIF5AL1 was verified by dual-luciferase reporter assays. CCK-8 and Transwell assays were utilized to respectively measure the proliferation, migration, and invasion capabilities of the two breast cancer cell lines, MCF-7 and MDA-MB-231.
RESULTS: A significant downregulation of miR-596 was observed in breast cancer tissues and cell lines (all P < 0.001). Clinically, reduced miR-596 expression was associated with advanced TNM stage, lymph node metastasis, and inferior overall survival (P < 0.05). EIF5AL1 was validated as a direct target gene of miR-596, and their expression levels were inversely correlated in clinical samples (r = -0.801, P < 0.001). Reintroduction of miR-596 markedly suppressed the proliferation, migration, and invasion of cancer cells, effects that were largely reversed by overexpressing EIF5AL1 (all P < 0.001).
CONCLUSION: In breast cancer, miR-596 suppresses malignancy and predicts prognosis by targeting EIF5AL1. Thus, therapeutic modulation of this axis offers novel avenues for treatment and risk assessment.
METHODS: To explore the role of miR-596, qRT-PCR was applied to measure its expression in tissue and cell samples from 137 enrolled subjects. The regulatory interaction between miR-596 and EIF5AL1 was verified by dual-luciferase reporter assays. CCK-8 and Transwell assays were utilized to respectively measure the proliferation, migration, and invasion capabilities of the two breast cancer cell lines, MCF-7 and MDA-MB-231.
RESULTS: A significant downregulation of miR-596 was observed in breast cancer tissues and cell lines (all P < 0.001). Clinically, reduced miR-596 expression was associated with advanced TNM stage, lymph node metastasis, and inferior overall survival (P < 0.05). EIF5AL1 was validated as a direct target gene of miR-596, and their expression levels were inversely correlated in clinical samples (r = -0.801, P < 0.001). Reintroduction of miR-596 markedly suppressed the proliferation, migration, and invasion of cancer cells, effects that were largely reversed by overexpressing EIF5AL1 (all P < 0.001).
CONCLUSION: In breast cancer, miR-596 suppresses malignancy and predicts prognosis by targeting EIF5AL1. Thus, therapeutic modulation of this axis offers novel avenues for treatment and risk assessment.