SC-43, a Sorafenib derivative, is a potent and orally active SHP-1 (PTPN6) agonist. SC-43 inhibits the phosphorylation of STAT3 and induces cell apoptosis. SC-43 has anti-fibrotic and anticancer effects[1][2].

SC-43 (0-10 μM; 24-72 hours; HuCCT-1, KKU-100, and CGCCA cells) treatment reveals the anti-proliferative effects in cholangiocarcinoma (CCA) cell lines in a dose-dependent manner after treating 24, 48 and 72 hours respectively[1].SC-43 (0-10 μM; 24 hours; HuCCT-1, KKU-100, and CGCCA cells) treatment shows increased sub-G1 cells and G2-M arrest, indicating SC-43 induced differential apoptotic effects in these cell lines[1].SC-43 (0-10 μM; 24 hours; HuCCT-1, KKU-100, and CGCCA cells) treatment demonstrates significant increase in cleaved caspase-3 and PARP level[1].SC-43 activates SH2 domain-containing phosphatase 1 (SHP-1) activity, leading to p-STAT3 and downstream cyclin B1 and Cdc2 downregulation. SC-43 augments SHP-1 activity by direct binding to N-SH2 and relief of its autoinhibition[1]. Cell Viability Assay[1] Cell Line: HuCCT-1, KKU-100, and CGCCA cells

SC-43 (10-30 mg/kg; oral gavage; daily; for 23 days; male NCr athymic nude mice) treatment exhibits xenograft tumor growth inhibition, p-STAT3 reduction and SHP-1 activity elevation[1]. Animal Model: Male NCr athymic nude mice (5-7 weeks of age) injected with HuCCT-1 cells[1]

[1]. Ming-Hung Hu, et al. Targeting SHP-1-STAT3 signaling: A promising therapeutic approach for the treatment of cholangiocarcinoma. Oncotarget. 2017 May 10;8(39):65077-65089. [2]. Tung-Hung Su, et al. Src-homology protein tyrosine phosphatase-1 agonist, SC-43, reduces liver fibrosis. Sci Rep. 2017 May 11;7(1):1728.