Effect of miR-15a on induction of apoptosis in breast cancer MCF-7 cells / 中华肿瘤杂志
Chinese Journal of Oncology
;
(12): 827-830, 2011.
Article
in Chinese
| WPRIM
| ID: wpr-320128
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the effect and mechanism of miR-15a on the induction of apoptosis in breast cancer cells.</p><p><b>METHODS</b>To detect the expression level of miR-15a in breast cancer cell line MCF-7 cells and human mammary gland epithelial cell line MCF-10A cells by quantitative PCR. The target point of MCF-7 was predicted by software and was validated by luciferase report gene system. MiR-15a was transfected into MCF-7 cells with liposomes. The expression of Bcl-2 in MCF-7 cells was detected by Western blotting and the apoptosis rate of MCF-7 cells was detected by flow cytometry.</p><p><b>RESULTS</b>The expression level of miR-15a in MCF-7 cells was lower than that in the MCF-10A cells (0.2531, P < 0.0001). The expression of MiR-15a was significantly inhibited by Bcl-2 (P < 0.05). Compared with the control, Bcl-2 expression was significantly decreased in the MCF-7 cells. The results of flow cytometry showed that the apoptosis rate was 13.4% in non-transfected MCF-7 cells, 15.9% in MCF-7 cells transfected with control RNA, and 31.5% in MCF-7 cells transfected with miR-15a (P < 0.05), indicating an evident induction of apoptosis in the MCF-7 cells.</p><p><b>CONCLUSION</b>miR-15a may have a potential application value in breast carcinoma biotherapy.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pathology
/
Breast Neoplasms
/
Transfection
/
Polymerase Chain Reaction
/
Apoptosis
/
Proto-Oncogene Proteins c-bcl-2
/
MicroRNAs
/
MCF-7 Cells
/
Genetics
/
Metabolism
Limits:
Humans
Language:
Chinese
Journal:
Chinese Journal of Oncology
Year:
2011
Type:
Article
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