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Stenoparib

CAS No. : 1140964-99-3

MCE 国际站：Stenoparib

产品活性：Stenoparib (E7449) 是 PARP1 和 PARP2 的有效抑制剂，同时可抑制 TNKS1 和 TNKS2 的活性，在以 ³²P-NAD⁺ 为底物的实验中，测得对 PARP1，PARP2，TNKS1 和 TNKS2 的 IC₅₀ 值分别为 2.0，1.0，∼50 和 ∼50 nM。

研究领域：Cell Cycle/DNA Damage  |  Epigenetics

作用靶点：PARP

In Vitro: Stenoparib is a potent PARP1 and PARP2 inhibitor and also inhibits TNKS1 and TNKS2, with IC₅₀s of 2.0, 1.0, ∼50 and ∼50 nM for PARP1, PARP2, TNKS1 and TNKS2, respectively, using ³²P-NAD⁺ as substrate. Stenoparib shows no obvious inhibiotry effects on PARP3 or PARPs 6-16. Stenoparib traps PARP1 onto damaged DNA, and affects DNA repair pathways beyond homologous recombination (HR). Stenoparib most potnetly suppresses cells deficient in components of the HR pathway (BRCA1 and 2, CtIP, Rad54). Stenoparib (10 μM) inhibits Wnt signaling in SW480 cells.

In Vivo: Stenoparib moderately inhibits the growth of tumors at 100 mg/kg, and significantly ehhances the inhibition via 10, 30 and 100 mg/kg oral dosing in combination with temozolomide (TMZ) in the mouse melanoma B16-F10 isograft model. Stenoparib (30 or 100 mg/kg, p.o.) inhibits PARP, shows anti-tumor activity, and is well-tolerated without any obvious body weight loss or deaths in a BRCA mutant xenograft model. Stenoparib (30, 100 or 300 mg/kg, p.o.) suppresses re-growth of hair in a dose dependent manner, and blocks Wnt signaling in C57BL/6 mice. Stenoparib (100 mg/kg, p.o.) combined with MEK inhibitor exhibits antitumor activity in a Wnt1 subcutaneous model (mammary tumors initially isolated from Wnt1 (int-1) transgenic mice).

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