PMID- 29029413 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20191120 IS - 1949-2553 (Electronic) IS - 1949-2553 (Linking) VI - 8 IP - 39 DP - 2017 Sep 12 TI - Targeting SHP-1-STAT3 signaling: A promising therapeutic approach for the treatment of cholangiocarcinoma. PG - 65077-65089 LID - 10.18632/oncotarget.17779 [doi] AB - Sorafenib is a multiple kinase inhibitor which targets Raf kinases, VEGFR, and PDGFR and is approved for the treatment of hepatocellular carcinoma (HCC). Previously, we found that p-STAT3 is a major target of SC-43, a sorafenib derivative. In this study, we report that SC-43-induced apoptosis in cholangiocarcinoma (CCA) via a novel mechanism. Three CCA cell lines (HuCCT-1, KKU-100 and CGCCA) were treated with SC-43 to determine their sensitivity to SC-43-induced cell death and apoptosis. We found that SC-43 activated SH2 domain-containing phosphatase 1 (SHP-1) activity, leading to p-STAT3 and downstream cyclin B1 and Cdc2 downregulation, which induced G2-M arrest and apoptotic cell death. Importantly, SC-43 augmented SHP-1 activity by direct binding to N-SH2 and relief of its autoinhibition. Deletion of the N-SH2 domain (dN1) or point mutation (D61A) of SHP-1 counteracted the effect of SC-43-induced SHP-1 phosphatase activation and antiproliferation ability in CCA cells. In vivo assay revealed that SC-43 exhibited xenograft tumor growth inhibition, p-STAT3 reduction and SHP-1 activity elevation. In conclusion, SC-43 induced apoptosis in CCA cells through the SHP-1/STAT3 signaling pathway. FAU - Hu, Ming-Hung AU - Hu MH AD - Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan. AD - Division of Hematology and Oncology, Department of Medicine, Cardinal Tien Hospital, New Taipei City, Taiwan. AD - School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan. FAU - Chen, Li-Ju AU - Chen LJ AD - Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan. FAU - Chen, Yen-Lin AU - Chen YL AD - Department of Pathology, Cardinal Tien Hospital, New Taipei City, Taiwan. FAU - Tsai, Ming-Shen AU - Tsai MS AD - Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan. FAU - Shiau, Chung-Wai AU - Shiau CW AD - Institute of Biopharmaceutical Sciences, National Yang-Ming University, Taipei, Taiwan. FAU - Chao, Tzu-I AU - Chao TI AD - Transplant Medicine and Surgery Research Centre, Changhua Christian Hospital, Changhua, Taiwan. FAU - Liu, Chun-Yu AU - Liu CY AD - Department of Oncology, Taipei Veterans General Hospital, Taipei City, Taiwan. AD - School of Medicine, National Yang-Ming University, Taipei, Taiwan. FAU - Kao, Jia-Horng AU - Kao JH AD - Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan. AD - Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan. FAU - Chen, Kuen-Feng AU - Chen KF AD - Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan. AD - National Taiwan University College of Medicine, Taipei, Taiwan. LA - eng PT - Journal Article DEP - 20170510 PL - United States TA - Oncotarget JT - Oncotarget JID - 101532965 PMC - PMC5630313 OTO - NOTNLM OT - SC-43 OT - SHP-1 OT - STAT3 OT - cholangiocarcinoma OT - inflammatory cancer COIS- CONFLICTS OF INTEREST The authors declare no conflicts of interest. EDAT- 2017/10/17 06:00 MHDA- 2017/10/17 06:01 PMCR- 2017/09/12 CRDT- 2017/10/15 06:00 PHST- 2016/05/09 00:00 [received] PHST- 2017/04/26 00:00 [accepted] PHST- 2017/10/15 06:00 [entrez] PHST- 2017/10/17 06:00 [pubmed] PHST- 2017/10/17 06:01 [medline] PHST- 2017/09/12 00:00 [pmc-release] AID - 17779 [pii] AID - 10.18632/oncotarget.17779 [doi] PST - epublish SO - Oncotarget. 2017 May 10;8(39):65077-65089. doi: 10.18632/oncotarget.17779. eCollection 2017 Sep 12.