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miR-200a 靶向调控 AP-2γ 表达抑制神经母细胞瘤 SK-N-AS 细胞增殖.
- Source :
-
Tianjin Medical Journal . 2016, Vol. 44 Issue 2, p162-165. 4p. - Publication Year :
- 2016
-
Abstract
- Objective To investigate whether miR-200a suppresses cell proliferation by targeting AP-2γ expression, and reveal molecular mechanism that miR-200a functions as a tumor-suppressor in neuroblastoma cells. Methods Dualluciferase reporter gene assay was employed to examine the effect of miR-200a on AP-2γ promotor luciferase activity. Neuroblastoma cells were transfected with miR-200a mimics, and the expressions of AP-2γ mRNA and protein were detected by RT-PCR and Western blot assay. The effects of AP-2γ down-regulation on cell proliferation were observed after AP-2γ shRNA was transfected into neuroblastoma cells. Neuroblastoma cell proliferation was detected by MTS assay after being cotransfected with miR-200a mimics and AP-2γ plasmid. Results Results showed that miR-200a could inhibit proliferation of neuroblastoma cells at cell viability (66.33±5.13) compared with that of control group (100±0), and also miR-200a can bind to the 3′untranslated region of AP -2γ promotor and inhibit its luciferase activity with an inhibit ratio at (0.624±0.051). AP-2γ mRNA and protein expressions were significantly down-regulated when miR-200a was over-expressed in neuroblastoma cells. Furthermore, results showed that shRNA-mediated down-regulation of AP-2γ that suppressed the cell proliferation of neuroblastoma at (62.5±2.4) by comparing with the control group (100±0). Moreover, restoring AP-2γ expression reversed the effect of miR-200a with a cell viability suppression at (92.4±1.4). Conclusion miR-200a suppresses cell proliferation by targeting AP-2γ expression in neuroblastoma cells. [ABSTRACT FROM AUTHOR]
Details
- Language :
- Chinese
- ISSN :
- 02539896
- Volume :
- 44
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Tianjin Medical Journal
- Publication Type :
- Academic Journal
- Accession number :
- 121179589
- Full Text :
- https://doi.org/10.11958/56744