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- W3040004015 abstract "Circular RNAs (circRNAs) play vital roles in the pathogenesis and development of multiple cancers, including hepatocellular carcinoma (HCC). Nevertheless, the regulatory mechanisms of circ-SPECC1 in HCC remain poorly understood. In our study, we found that circ-SPECC1 was apparently downregulated in H2O2-treated HCC cells. Additionally, knockdown of circ-SPECC1 inhibited cell proliferation and promoted cell apoptosis of HCC cells under H2O2 treatment. Moreover, circ-SPECC1 inhibited miR-33a expression by direct interaction, and miR-33a inhibitor partially reversed the effect of circ-SPECC1 knockdown on proliferation and apoptosis of H2O2-treated HCC cells. Furthermore, TGFβ2 was demonstrated to be a target gene of miR-33a and TGFβ2 overexpression rescued the phenotypes of HCC cells attenuated by miR-33a mimics. Meanwhile, autophagy inhibition by 3-methyladenine (3-MA) abrogated the effect of miR-33a mimics on proliferation and apoptosis of H2O2-treated HCC cells. Finally, knockdown of circ-SPECC1 hindered tumor growth in vivo. In conclusion, our study demonstrated that circ-SPECC1 regulated TGFβ2 and autophagy to promote HCC tumorigenesis under oxidative stress via miR-33a. These findings might provide potential treatment strategies for patients with HCC." @default.
- W3040004015 created "2020-07-10" @default.
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- W3040004015 date "2020-07-06" @default.
- W3040004015 modified "2023-10-16" @default.
- W3040004015 title "Circ‐SPECC1 modulates TGFβ2 and autophagy under oxidative stress by sponging miR‐33a to promote hepatocellular carcinoma tumorigenesis" @default.
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- W3040004015 doi "https://doi.org/10.1002/cam4.3219" @default.
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