新型選擇性PDE10A抑制劑PR-1346的藥代動力學(xué)研究
[Abstract]:Objective: selective PDE10A inhibitor, a new drug target for anti-schizophrenia, can not only improve the positive symptoms of schizophrenia, but also improve the negative symptoms and cognitive dysfunction of schizophrenia. As a new type of schizophrenia treatment drugs, the development of its potential is enormous. The purpose of this study is to study the preclinical pharmacokinetic properties of a new selective PDE10A inhibitor, PR-1346, and to explore the formation of PR-1346. Methods: 1) the stability of liver microzyme in PR-1346 human, rat and mouse, 2) the inhibitory effect of PR-1346 microsomase (CYP3A4,CYP1A2,CYP2C9,CYP2C19 and CYP2D6), 3) the study of PR-1346 protein binding by equilibrium dialysis, and 2) the study of the inhibition of PR-1346 microsomase (CYP3A4,CYP1A2,CYP2C9,CYP2C19 and CYP2D6), and 3) the study of protein binding of PR-1346 by equilibrium dialysis. 4) the study of cell penetration and P-gp efflux of PR-1346 in Caco-2 and MDCKII-hMDR1 cell transport system, and (5) the pharmacokinetics and brain tissue distribution of PR-1346 in mice were studied by oral administration of PR-1346 in tail vein and tail vein, respectively. Results: 1) the intrahepatic clearance rates of PR-1346 in human, rat and mouse liver microsomes were 0.252 mL / kg, 3.808 mL / kg, 42.63 mL / min / kg and 42.63 mL / kg / kg, respectively.Results: (1) the enzyme clearance rates in human, rat and mouse liver microsomes were 0.252 mL / kg, 3.808 mL / kg and 42.63 mL / kg, respectively. 2) the inhibitory fraction of PR-1346 (10 渭 M) on 2C9, 2C19 and 2D6 was 79.3%, 90.4% and 52.5%, respectively, which showed a strong inhibitory effect on CYP3A4 and 1A2. 3) the binding rate of PR-1346 (1 渭 M) in human, rat and mouse plasma protein was more than 99%, and there was no significant difference between species and genera. 4) PR-1346 penetration coefficient (PappA-B:1.46x10-6cm/s, PappB-A:4.66x10-6cm/s), efflux ratio 3.0, in Caco-2 cell transport system. The PR-1346 penetration coefficient (PappA-B:0.96x10-6cm/s,PappB-A:1.49x10-6cm/s) and efflux ratio in MDCKII-hMDR1 cell transport system were 1.17; 5) the elimination half-life of oral PR-1346 (2mg/kg) was 8.8h, the maximum plasma concentration was 974.3 ng / mL, the area under the curve was (AUC) 1178.9 ng / L / hour, the clearance rate of (CL) was 6.1 ng / mL / kg, the clearance rate was 6.1ng / ml / kg. After bioavailability (Bioavailability%) 87.4%.PR-1346 administration, the brain tissue concentration of PR-1346 reached the peak concentration at 2 hours, and remained at high level (244.1~528.8ng/mL) for 8 hours. After 24 hours, the concentration of PR-1346 in brain tissue decreased to a very low level. Conclusion: PR-1346 has good stability in human, rat and mouse liver microsomes, and there are obvious species differences, but PR-1346 (10 渭 M) has no obvious inhibitory effect on CYP3A4,1A2 subtype, but has a strong inhibitory effect on CYP2C9,2C19,CD6. The results of cell penetration and efflux assay showed that PR-1346 was a medium penetrating and low efflux compound, and PR-1346 (1 渭 M) was a high plasma protein binding agent. The bioavailability of PR-1346 mice was 87.4%, and the brain concentration could be maintained at a high level for a long time, which was basically consistent with the efficacy in vivo and metabolism in vitro. In conclusion, we think that PR-1346, a new inhibitor of PDE10A, has good pharmacokinetic properties, and has good development value and application prospect.
【學(xué)位授予單位】:蘇州大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:R965
【共引文獻(xiàn)】
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