
| 10.18632/oncotarget.16610
http://scihub22266oqcxt.onion/10.18632/oncotarget.16610
 C5503602!5503602!28388577
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Oncotarget 2017 ; 8 (24): 39154-66 Nephropedia Template TP
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IL-6R/STAT3/miR-204 feedback loop contributes to cisplatin resistance of epithelial ovarian cancer cells #MMPMID28388577Zhu X; Shen H; Yin X; Long L; Chen X; Feng F; Liu Y; Zhao P; Xu Y; Li M; Xu W; Li YOncotarget 2017[Jun]; 8 (24): 39154-66 PMID28388577show ga
Enhanced chemoresistance is, among other factors, believed to be responsible for treatment failure and tumor relapse in patients with epithelial ovarian cancer (EOC). Here, we exposed EOC cells to interleukin-6 (IL-6) to activate oncogenic STAT3, which directly repressed miR-204 via a conserved STAT3-binding site near the TRPM3 promoter region upstream of miR-204. Repression of miR-204 was required for IL-6-induced cisplatin (cDDP) resistance. Furthermore, we identified the IL-6 receptor (IL-6R), which mediates IL-6-dependent STAT3 activation, as a direct miR-204 target. Importantly, the resulting IL-6R/STAT3/miR-204 feedback loop was identified in patients with EOC, and its activity correlated with chemosensitivity. Moreover, exogenous miR-204 blocked this circuit and enhanced cDDP sensitivity both in vitro and in vivo by inactivating IL-6R/STAT3 signaling and subsequently decreasing the expression of anti-apoptotic proteins. Our findings illustrate the function of this feedback loop in cDDP-based therapy and may offer a broadly useful approach to improve EOC therapy.�
  
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