Inhibition of miR-375 decreases lipoapoptosis in NIT-1 β cells
10.3760/cma.j.issn.1000-6699.2010.05.017
- VernacularTitle:抑制miR-375降低NIT-1胰岛β细胞脂性凋亡
- Author:
Xuejuan XU
;
Yan LI
;
Shanying LIU
;
Ying LIANG
;
Li YAN
;
Zuzhi FU
- Publication Type:Journal Article
- Keywords:
RNA interference;
Beta cell apoptosis;
MiR-375;
Myotrophin;
2'-O-me-375
- From:
Chinese Journal of Endocrinology and Metabolism
2010;26(5):402-405
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effect of miR-375 inhibited by 2'-O-me-375 on lipoapoptosis of NIT-1 pancreatic β cells. Methods NIT-1 cells were divided and treated according to the optimal condition: mock (without lipofectamine) ,lipofectamine( transfected only with lipofectamine) ,NC-miRNA (transfected with negative control miRNA) ,and 2'-O-me-375( transfected with 2'-O-me-375) groups. 72 hours later, all cells in each group were cultured with 500 μmol/L palmitate for 48 h. The percentage of apoptotic cells was detected by Hochest33342 staining and terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end-labeling (TUNEL). The protein expression of myotrophin ( V1 ) , a target gene of miR-375, was detected by Western blotting. Results Compared to the other three groups,the cell apoptosis rate of 2'-O-me-375 group was the lowest (P<0.01) .along with the highest VI expression level(P<0. 01). Conclusion Inhibition of miR-375 decreases pancreatic (3-cell lipoapoptosis.