MiR-142-3p functions as a tumor suppressor by targeting RAC1/PAK1 pathway in breast cancer.

Journal of cellular physiology 2020 Vol.235(5) p. 4928-4940

Xu T, He BS, Pan B, Pan YQ, Sun HL, Liu XX, Xu XN, Chen XX, Zeng KX, Xu M, Wang SK

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Abstract

MicroRNA-142-3p (miR-142-3p) was previously investigated in various cancers, whereas, it's role in breast cancer (BC) remains far from understood. In this study, we found that miR-142-3p was markedly decreased both in cell lines and BC tumor tissues. Elevated miR-142-3p expression suppressed growth and metastasis of BC cell lines via gain-of-function assay in vitro and in vivo. Mechanistically, miR-142-3p could regulate the ras-related C3 botulinum toxin substrate 1 (RAC1) expression in protein level, which simultaneously suppressed the epithelial-to-mesenchymal transition related protein levels and the activity of PAK1 phosphorylation, respectively. In addition, rescue experiments revealed RAC1 overexpression could reverse tumor-suppressive role of miR-142-3p. Our results showed miR-142-3p could function as a tumor suppressor via targeting RAC1/PAK1 pathway in BC, suggesting a potent therapeutic target for BC treatment.

추출된 의학 개체 (NER)

유형영어 표현한국어 / 풀이UMLS CUI출처등장
해부 breast 유방 dict 2
시술 botulinum toxin 보툴리눔독소 주사 dict 1

MeSH Terms

Animals; Apoptosis; Breast Neoplasms; Cell Movement; Cell Proliferation; Databases, Genetic; Female; Gene Expression Regulation, Neoplastic; Humans; MCF-7 Cells; Mice, Inbred BALB C; Mice, Nude; MicroRNAs; Neoplasm Invasiveness; Neovascularization, Pathologic; Phosphorylation; Signal Transduction; p21-Activated Kinases; rac1 GTP-Binding Protein

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