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Upregulation of MicroRNA-34a Sensitizes Ovarian Cancer Cells to Resveratrol by Targeting Bcl-2
Shangli Yao,Ming Gao,Zujun Wang,Wenyan Wang,Lei Zhan,Bing Wei 연세대학교의과대학 2021 Yonsei medical journal Vol.62 No.8
Purpose: Resveratrol (REV), a natural compound found in red wine, exhibits antitumor activity in various cancers, includingovarian cancer (OC). However, its potential anti-tumor mechanisms in OC are not well characterized. Here, we tried to elucidatethe underlying mechanisms of REV in OC cells. Materials and Methods: The anti-proliferative effects of REV against OC cells were measured using CCK-8 assay. Apoptosis wasmeasured using an Annexin V-FITC/PI apoptosis detection kit. The anti-metastasis effects of REV were evaluated by invasion assayand wound healing assay. The miRNA profiles in REV-treated cells were determined by microarray assay. Results: Our results showed that REV treatment suppresses the proliferation, induces the apoptosis, and inhibits the invasion andmigration of OV-90 and SKOV-3 cells. miR-34a was selected for further study due to its tumor suppressive roles in various humancancers. We found miR-34a overexpression enhanced the inhibitory effects of REV on OC cells, whereas miR-34a inhibition hadthe opposite effect in OC cells. In addition, we verified that BCL2, an anti-apoptotic gene, was found directly targeted by miR-34a. We also found that REV reduced the expression of Bcl-2 in OC cells. Further investigations revealed that overexpression of Bcl-2significantly abolished the anti-tumor effects of REV on OC cells. Conclusion: Overall, these results demonstrated that REV exerts anti-cancer effects on OC cells through an miR-34a/Bcl-2 axis,highlighting the therapeutic potential of REV for treatment of OC.
Few-Layered MoS2 Nanostructures for Highly Efficient Visible Light Photocatalysis
Dan Li,Jianwei Li,Caiqin Han,Xinsheng Zhao,Haipeng Chu,Wenyan Lei,Xinjuan Liu 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2016 NANO Vol.11 No.10
Few-layered MoS2 nanostructures were successfully synthesized by a simple hydrothermal method without the addition of any catalysts or surfactants. Their morphology, structure and photocatalytic activity were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, transmission electron microscopy, electrochemical impedance spectra and UV-Vis absorption spectroscopy, respectively. These results show that the MoS2 nanostructures synthesized at 180℃ exhibit an optimal visible light photocatalytic activity (99%) in the degradation of Rhodamine B owing to the relatively easier adsorption of pollutants, higher visible light absorption and lower electron–hole pair recombination.