miR-660-5p promotes breast cancer progression through down-regulating TET2 and activating PI3K/AKT/mTOR signaling
Rev. bras. pesqui. méd. biol
; Braz. j. med. biol. res;53(12): e9740, 2020. tab, graf
Article
de En
| LILACS, ColecionaSUS
| ID: biblio-1132511
Bibliothèque responsable:
BR1.1
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.
Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
LILACS
/
ColecionaSUS
Sujet principal:
Tumeurs du sein
/
MicroARN
Limites:
Female
/
Humans
Langue:
En
Journal:
Braz. j. med. biol. res
/
Rev. bras. pesqui. méd. biol
Sujet du journal:
BIOLOGIA
/
MEDICINA
Année:
2020
Type de document:
Article
Pays d'affiliation:
Chine
Pays de publication:
Brésil