RESUMO
Objective:To study the regulatory effect of miR-9 on the proliferation of breast cancer cells by targeting hexokinase 2 (HK2) .Methods:Breast cancer tissues and paracancer tissues were collected and the expression levels of miR-9 and HK2 were detected. MCF-7 cells were cultured and divided into blank control group, NC group, miR-9 group, NC-siRNA group and HK2-siRNA group. The cell viability, expression levels of HK2 and cleaved caspase-3 were detected, the targeted binding of miR-9 to HK2 was verifed.Results:the expression level of miR-9 in breast cancer was lower than that in paracancer tissue (0.52±0.08 vs 1.05±0.25, t=16.685, P<0.000) , and the expression level of HK2 was higher than that in paracancer tissue (0.73±0.14 vs 0.34±0.08, t=17.587, P<0.000) , and the expression level of miR-9 was negatively correlated with HK2; the OD490 level, the expression level of HK2 and the fluorescence activity of double luciferase reporter gene containing HK2 mRNA 3 'UTR in miR-9 group were lower than those in NC group (0.58±0.09 vs 1.04±0.21, 0.51±0.08 vs 1.18±0.24, 41.11±9.28 vs 148.28±29.59, t/P=4.027/0.007, 5.297/0.002, 6.912/0.001) , and the expression level of cleaved caspase-3 was higher than that in NC group (1.08±0.26 vs 0.42±0.09, t/P=4.797/0.003) . The OD490 level and the expression level of HK in HK-siRNA group were higher than that in NC-siRNA group, and the expression level of cleaved caspase-3 was higher than that of NC-siRNA group. Conclusion:miR-9 can inhibit the proliferation of breast cancer cells, and its mechanism may be related to the targeted inhibition of HK2 expression and the increase of downstream cleaved caspase-3 expression.
RESUMO
Objective To investigate the influence of psychological intervention on the urodynamic test. Method The 959 patients in the urodynamic test were divided into two groups:the control group and the the test group,then we analyzed and compared the results. Results In the incidence of the abnormal abdominal pressure, the unnatural detrusor contraction and the Unnatural urethral sphincter contraction, there were statistically significant differences between two groups ( <0.05) . Conclusion It effective and necessary for urodynamic test to do psychological intervention.