Podocytes are thought to be injured at an earlystage in DN; therefore, we investigated thefunctional role of miR-134-5p in podocyteapoptosis. First, anti-miR-ctrl or anti-miR-134-5p was transfected into HG-treated podocytesprior to analysis by qRT-PCR. Importantly, therelative expression of miR-134-5p in HG-treatedpodocytes transfected with anti-miR-134-5pwas significantly reduced compared with that incells transfected with anti-miR-ctrl (Figure 2B).Next, we used qRT-PCR and western blotting to examine the effect of miR-134-5p on the expressionof nephrin, a key marker ofpodocytes in the filtrationslits. Notably, mRNA andprotein levels of nephrinwere significantly increased in HG-treated podocytes transfected with anti-miR-134-5p compared with thatin cells transfected withanti-miR-ctrl (Figure 2C-E).In addition, we performedflow cytometry and westernblotting to detect apopto-sis in podocytes. We foundthat the apoptosis rate andlevels of cleaved caspase3 decreased in HG-treatedpodocytes transfected withanti-miR-134-5p, comparedwith that in cells transfect-ed with anti-miR-ctrl (Figure2F, 2G). In contrast, NG-treated podocytes trans-fected with miR-ctrl or miR-134-5p showed theopposite results (Figure S1). These results indi-cate that miR-134-5p acts as a promoter ofpodocyte apoptosis.
Podocytes are thought to be injured at an early<br>stage in DN; therefore, we investigated the<br>functional role of miR-134-5p in podocyte<br>apoptosis. First, anti-miR-ctrl or anti-miR-134-<br>5p was transfected into HG-treated podocytes<br>prior to analysis by qRT-PCR. Importantly, the<br>relative expression of miR-134-5p in HG-treated<br>podocytes transfected with anti-miR-134-5p<br>was significantly reduced compared with that in<br>cells transfected with anti-miR-ctrl (Figure 2B).<br>Next, we used qRT-PCR and western blotting to examine the effect of miR-134-5p on the expression<br>of nephrin, a key marker of<br>podocytes in the filtration<br>slits. Notably, mRNA and<br>protein levels of nephrin<br>were significantly increased in HG-treated podocytes transfected with anti-miR-<br>134-5p compared with that<br>in cells transfected with<br>anti-miR-ctrl (Figure 2C-E).<br>In addition, we performed<br>flow cytometry and western<br>blotting to detect apopto-<br>sis in podocytes. We found<br>that the apoptosis rate and<br>levels of cleaved caspase<br>3 decreased in HG-treated<br>podocytes transfected with<br>anti-miR-134-5p, compared<br>with that in cells transfect-<br>ed with anti-miR-ctrl (Figure<br>2F, 2G). In contrast, NG-treated podocytes trans-fected with miR-ctrl or miR-134-5p showed the<br>opposite results (Figure S1). These results indi-<br>cate that miR-134-5p acts as a promoter of<br>podocyte apoptosis.
正在翻译中..