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- 저자 : Wei Mingwei (검색결과 2 건)
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Li Hua,Guo Junyu,Qin Zhongwei,Wei Mingwei,Guo Houji,Huang Fuda 대한독성 유전단백체 학회 2023 Molecular & cellular toxicology Vol.19 No.3
Background Emerging evidence has indicated that circular RNAs (circRNAs) play vital roles in colorectal cancer (CRC). CircRNA leucine zipper and EF-hand containing transmembrane protein 1 (circLETM1) have been found to be ectopic in CRC, but their role in CRC has not been studied yet. Objective This study aims to explore the roles of circLETM1 in CRC and the possible molecular mechanism. Result The results showed that circLETM1 was highly expressed in CRC cells, and was localized at the cytoplasm. Functional assays verifi ed that overexpression of circLETM1 could facilitate, but circLETM1 downregulation could hamper proliferation, migration and invasion abilities of CRC cells. In addition, mechanism assays found that circLETM1 absorbed and reduced microRNA (miR)-143-3p expression to promote keratin 80 (KRT80). Rescue experiments proved that circLETM1 mediated CRC proliferation, migration and invasion through KRT80. Conclusion Taken together, our results suggested that circLETM1 promotes proliferation, migration and invasion through the miR-143-3p/KRT80 axis in CRC. Therefore, targeting circLETM1 may provide a novel option for CRC treatment.
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Increased Expression of EMMPRIN and VEGF in the Rat Brain after Gamma Irradiation
Ming Wei,Hong Li,Huiling Huang,Desheng Xu,Dashi Zhi,Dong Liu,Yipei Zhang 대한의학회 2012 Journal of Korean medical science Vol.27 No.3
The extracellular matrix metalloproteinase inducer (EMMPRIN) has been known to play a key regulatory role in pathological angiogenesis. A elevated activation of vascular endothelial growth factor (VEGF) following radiation injury has been shown to mediate blood-brain barrier (BBB) breakdown. However, the roles of EMMPRIN and VEGF in radiation-induced brain injury after gamma knife surgery (GKS) are not clearly understood. In this study, we investigated EMMPRIN changes in a rat model of radiation injury following GKS and examined potential associations between EMMPRIN and VEGF expression. Adult male rats were subjected to cerebral radiation injury by GKS under anesthesia. We found that EMMPRIN and VEGF expression were markedly upregulated in the target area at 8-12 weeks after GKS compared with the control group by western blot,immunohistochemistry, and RT-PCR analysis. Immunofluorescent double staining demonstrated that EMMPRIN signals colocalized with caspase-3 and VEGF-positive cells. Our data also demonstrated that increased EMMPRIN expression was correlated with increased VEGF levels in a temporal manner. This is the first study to show that EMMPRIN and VEGF may play a role in radiation injuries of the central nervous system after GKS.
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