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miR-660-5p promotes breast cancer progression through down-regulating TET2 and activating PI3K/AKT/mTOR signaling
Peng, Bing; Li, Chao; He, Lili; Tian, Mi; Li, Xin.
  • Peng, Bing; The Second Peoples Hospital of Jingmen. Department of Oncology. Jingmen. CN
  • Li, Chao; The Second Peoples Hospital of Jingmen. Department of Oncology. Jingmen. CN
  • He, Lili; The Second Peoples Hospital of Jingmen. Department of General Surgery. Jingmen. CN
  • Tian, Mi; Institute of Forensic Medicine, Jingmen Public Security Bureau. Jingmen. CN
  • Li, Xin; The Second Peoples Hospital of Jingmen. Department of General Surgery. Jingmen. CN
Braz. j. med. biol. res ; 53(12): e9740, 2020. tab, graf
Article in English | LILACS, ColecionaSUS | ID: biblio-1132511
ABSTRACT
Breast cancer (BC) is a commonly diagnosed cancer in females. MicroRNA-660-5p (miR-660-5p) has been reported to be involved in the occurrence and development of BC. However, the regulatory network of miR-660-5p in BC has not been fully addressed. Quantitative real-time polymerase chain reaction (qRT-PCR) was performed to detect the enrichment of miR-660-5p and tet-eleven translocation 2 (TET2) in BC tissues and cells. Cell counting kit-8 (CCK8), flow cytometry, and transwell migration and invasion assays were used to measure cell proliferation, apoptosis, migration, and invasion. The target relationship between miR-660-5p and TET2 was confirmed by dual luciferase reporter assay. Protein expression was measured by western blot. The expression of miR-660-5p was elevated in BC, and high expression of miR-660-5p was closely related to lymph node metastasis, advanced TNM stage, and vascular invasion of BC tumors. miR-660-5p silencing inhibited cell proliferation and metastasis, but induced apoptosis of BC cells. TET2 was identified as a direct target of miR-660-5p, and the interference of TET2 partly reversed the suppressive effects of miR-660-5p silencing on the malignant potential of BC cells. miR-660-5p promoted BC progression partly through modulating TET2 and PI3K/AKT/mTOR signaling. miR-660-5p/TET2 axis might be a promising target for BC treatment.
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Full text: Available Index: LILACS (Americas) Main subject: Breast Neoplasms / MicroRNAs Limits: Female / Humans Language: English Journal: Braz. j. med. biol. res Year: 2020 Type: Article Institution/Affiliation country: Institute of Forensic Medicine, Jingmen Public Security Bureau/CN / The Second Peoples Hospital of Jingmen/CN

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Full text: Available Index: LILACS (Americas) Main subject: Breast Neoplasms / MicroRNAs Limits: Female / Humans Language: English Journal: Braz. j. med. biol. res Year: 2020 Type: Article Institution/Affiliation country: Institute of Forensic Medicine, Jingmen Public Security Bureau/CN / The Second Peoples Hospital of Jingmen/CN