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PF-915275

CAS No. : 857290-04-1

MCE 站：PF-915275

产品活性：PF-915275 是一种有效的，选择性的，具有口服活性的人 11β-羟基类固醇脱氢酶1型 (11βHSD1) 抑制剂，K_i 为 2.3 nM，EC₅₀ 为 15 nM (在 HEK293 细胞中)。PF-915275 对人和猴原代肝细胞中可的松向皮质醇的转化具有剂量依赖性，其 EC₅₀ 分别为 20 nM 和 100 nM。

研究领域：Others

作用靶点：Others

In Vitro: PF-915275 is a potent inhibitor of 11βHSD1 (in vitro HEK293, EC₅₀ of 15 nM) in this human 11βHSD1 overexpressed cell line when coincubated in the presence of 300 nM enzyme substrate. Consistent with the species differences between human and rodent observed in biochemical assays, PF-915275 is a poor inhibitor of 11βHSD1 in rat FAO hepatoma cells, with an EC₅₀ of 14,500 nM. PF-915275 demonstrates species-dependent potency for inhibiting cellular conversion of cortisone to cortisol in dog, monkey, and human in primary hepatocytes, with activity in human hepatocytes/monkey hepatocytes/dog hepatocytes. PF-915275 does not significantly inhibit 11βHSD2 (only 1.5% inhibition when tested at 10 μM). The dose-dependent effect of PF-915275 on conversion of cortisone to cortisol in primary human and monkey hepatocytes, with an EC₅₀ of 20 and 100 nM, respectively.

In Vivo: The inhibition of either cortisone or prednisone turnover with PF-915275 yields similar EC₅₀ values to that in human hepatocytes (EC₅₀ by PF-915275 is 18 and 13 nM using cortisone and prednisone substrates, respectively) in vivo 11βHSD1 activity.
PF-915275 dose-dependently inhibits 11βHSD1-mediated conversion of prednisone to prednisolone. A maximum of 87% inhibition is observed, with the highest tested dose of 3 mg/kg.
The half-life of PF-915275 is 22 hours in monkey.
PF-915275 (0.1-3 mg/kg; oral administration; for 8 hours; male cynomolgus monkeys) treatment shows a trend in dose-dependent lowering of fed plasma insulin after 8 h of dosing in these monkeys. Plasma insulin levels are significantly lowered (by 54 and 60%, respectively) at 1 and 3 mg/kg PF-915275 treatment. Plasma glucose or lipid levels are not altered with treatment.

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