國家衛生研究院 NHRI:Item 3990099045/13624
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    題名: EMP2 induces cytostasis and apoptosis via the TGFABeta/SMAD/SP1 axis and recruitment of P2RX7 in urinary bladder urothelial carcinoma
    其他題名: EMP2 induces cytostasis and apoptosis via the TGF β/SMAD/SP1 axis and recruitment of P2RX7 in urinary bladder urothelial carcinoma
    作者: Li, CF;Chan, TC;Pan, CT;Vejvisithsakul, PP;Lai, JC;Chen, SY;Hsu, YW;Shiao, MS;Shiue, YL
    貢獻者: National Institute of Cancer Research
    摘要: Purpose Urinary bladder urothelial carcinoma (UBUC) is a common malignant disease, and its high recurrence rates impose a heavy clinical burden. The objective of this study was to identify signaling pathways downstream of epithelial membrane protein 2 (EMP2), which induces cytostasis and apoptosis in UBUC. Methods A series of in vitro and in vivo assays using different UBUC-derived cell lines and mouse xenograft models were performed, respectively. In addition, primary UBUC specimens were evaluated by immunohistochemistry. Results Exogenous expression of EMP2 in J82 UBUC cells significantly decreased DNA replication and altered the expression levels of several TGF beta signaling-related proteins. EMP2 knockdown in BFTC905 UBUC cells resulted in opposite effects. EMP2-dysregulated cell cycle progression was found to be mediated by the TGF beta/TGFBR1/SP1 family member SMAD. EMP2 or purinergic receptor P2X7 (P2RX7) gene expression upregulation induced apoptosis via both intrinsic and extrinsic pathways. In 242 UBUC patient samples, P2RX7 protein levels were found to be significantly and positively correlated with EMP2 protein levels. Low P2RX7 levels conferred poor disease-specific and metastasis-free survival rates, and significantly decreased apoptotic cell rates. EMP2 was found to physically interact with P2RX7. In the presence of a P2RX7 agonist, BzATP, overexpression of both EMP2 and P2RX7 significantly increased apoptotic cell rates compared to overexpression of EMP2 or P2RX7 alone. Conclusions EMP2 induces cytostasis via the TGF beta/SMAD/SP1 axis and recruits P2RX7 to enhance apoptosis in UBUC. Our data provide new insights that may be employed for the design of UBUC targeting therapies.
    日期: 2021-10
    關聯: Cellular Oncology. 2021 Oct 8;44(5):1133-1150.
    Link to: http://dx.doi.org/10.1007/s13402-021-00624-x
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=2211-3428&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000680368800002
    Cited Times(Scopus): https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85116462373
    顯示於類別:[其他] 期刊論文

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