信号转导通路: 受体酪氨酸激酶(RTK) >> Flt >> Flt YZ剂 >> Dovitinib (TKI-258)
http://selleck.cn/dovitinib-tki258-S1018.html
技术数据:
分子量(MW): 392.43
化学式:
C21H21FN6O
溶解度: DMSO ≥115mg/mL Water ≥115mg/mL Ethanol <1mg/mL
纯度: >99%
稳定性: at -20℃
CAS号: 405169-16-6
生物活性
Dovitinib is a highly potent, novel multitargeted growth factor receptor kinase inhibitor with IC50 of 1, 2, 5, 10, 8, 27, 36 nM for FLT3, c-KIT, FGFR, VEGFR1/2/3, PDGFRß and CSF-1R, respectively. [1] Dovitinib potently inhibits the FGF-stimulated growth of WT and F384L-FGFR3-expressing B9 cells with IC50 values of 25 nM. In addition, Dovitinib inhibits proliferation of B9 cells expressing each of the various activated mutants of FGFR3. IL-6-dependent B9 cells containing vector only (B9-MINV) are used to detect nonspecific toxicity. B9-MINV cells are resistant to the inhibitory activity of Dovitinib at concentrations up to 1 μM. [1] Dovitinib inhibits cell proliferation of KMS11 (FGFR3-Y373C), OPM2 (FGFR3-K650E), and KMS18 (FGFR3-G384D) cells with IC50 of values of 90 nM (KMS11 and OPM2) and 550 nM, respectively. Dovitinib prevents FGF-mediated ERK1/2 phosphorylation and induces cytotoxicity in FGFR3-expressing primary MM cells. BMSCs does confer a modest degree of resistance with 44.6% growth inhibition for cells treated with 500 nM Dovitinib and cultured on stroma compared with 71.6% growth inhibition for cells grown without BMSCs. Dovitinib inhibits proliferation of M-NFS-60, an M-CSF growth-driven mouse myeloblastic cell line with a median effective concentration (EC50) of 220 nM. [1] Treatment of SK-HEP1 cells with Dovitinib results in a dose-dependent reduction in cell number and G2/M phase arrest with reduction in the G0/G1 and S phases, inhibition of anchorage-independent growth and blockage of bFGF-induced cell motility. The IC50 for Dovitinib in SK-HEP1 cells is approximately 1.7 μM. Dovitinib also significantly decreases the basal phosphorylation levels of FGFR-1, FGFR substrate 2α (FRS2-α) and ERK1/2 but not Akt in both SK-HEP1 and 21-0208 cells. In 21-0208 HCC cells, Dovitinib significantly prevents bFGF-induced phosphorylation of FGFR-1, FRS2-α, ERK1/2 but not Akt. [2] Dovitinib induces both cytostatic and cytotoxic responses in vivo resulting in regression of FGFR3-expressing tumors. [1] Administration of Dovitinib results in significant tumor growth inhibition and tumor regressions, including large, established tumors (500-1,000 mm3). [3] Dovitinib shows a dose- and exposure-dependent inhibition of target RTKs expressed in tumor xenografts. Dovitinib potently inhibits tumor growth of six HCC lines. Inhibition of angiogenesis correlated with inactivation of FGFR/PDGFR-β/VEGFR-2 signaling pathways. Dovitinib also causes dephosphorylation of retinoblastoma, upregulation of p-histone H2A-X and p27, and downregulation of p-cdk-2 and cyclin B1, which results in a reduction in cellular proliferation and the induction of tumor cell apoptosis. In an orthotopic model, Dovitinib potently inhibits primary tumor growth and lung metastasis and significantly prolonged mouse survival. [2] Dovitinib has entered in a phase II clinical trial for the treatment of adenoid cystic carcinoma.
参考文献
CHIR-258, a novel, multitargeted tyrosine kinase inhibitor for the potential treatment of t(4;14) multiple myeloma. Trudel S, et al. Blood 2005;105(7), 2941-2948
Dovitinib demonstrates antitumor and antimetastatic activities in xenograft models of hepatocellular carcinoma. Huynh H, et al. J Hepatol 2012;56(3), 595-601
In vivo target modulation and biological activity of CHIR-258, a multitargeted growth factor receptor kinase inhibitor, in colon cancer models. Lee SH, et al. Clin Cancer Res 2005;11(10), 3633-3641
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