RPI-1 是一种特异的口服 2-吲哚啉酮 Ret 酪氨酸激酶抑制剂。RPI-1 抑制人甲状腺髓样癌 TT 细胞增殖、Ret 酪氨酸磷酸化、Ret 蛋白表达及 PLCgamma、ERKs 和 AKT 的活化。具有抗肿瘤活性。

RPI-1 is a specific, orally available 2-indolinone Ret tyrosine kinase inhibitor. RPI-1 inhibits proliferation, Ret tyrosine phosphorylation, Ret protein expression, and the activation of PLCgamma, ERKs and AKT in human medullary thyroid carcinoma TT cells. Antitumor activity.

Solid

TPC-1 cells are sensitive to the growth inhibitory effect of RPI-1 with an IC50 of 5.1 μM, following 72 hours of treatment. RPI-1 (7.5-60 μM) inhibits Ret/Ptc1 autophosphorylation in TPC-1 cells. RPI-1 inhibitory effects in the TPC-1 cell culture conditions lead to inhibition of pathways involving JNK2 and AKT.
The RPI-1 IC50 value for cell proliferation is 3.6 μM in NIH3T3 cells expressing the Ret mutant compared with 16 μM in non-transfected NIH3T3 cells, and that for colony formation in soft agar was 2.4 μM and 26 μM in RET mutant-transfected and H-RAS-transfected NIH3T3 cells, respectively. In NIH3T3 cells expressing the Ret mutant, Ret protein and tyrosine phosphorylation were undetectable after 24 hours of RPI-1 treatment. In TT cells, RPI-1 inhibits proliferation, Ret tyrosine phosphorylation, Ret protein expression, and the activation of PLCga

RPI-1 (50, 100 mg/kg; p.o.; twice a day for 10 days) inhibits the tumor growth of TT xenografts by 81%. has not independently confirmed the accuracy of these methods. They are for reference only. Animal Model: 8- to 11-week-old female athymi

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[1]. Lanzi C, et al. Inactivation of Ret/Ptc1 oncoprotein and inhibition of papillary thyroid carcinoma cell proliferation by indolinone RPI-1. Cell Mol Life Sci. 2003;60(7):1449-1459.
[2]. Cuccuru G, et al. Cellular effects and antitumor activity of RET inhibitor RPI-1 on MEN2A-associated medullary thyroid carcinoma. J Natl Cancer Inst. 2004;96(13):1006-1014.

In Vitro: DMSO : 125 mg/mL (420.44 mM; Need ultrasonic)配制储备液