Pazopanib

MCE 国际站：Pazopanib

产品活性：Pazopanib (GW786034) 是多靶点抑制剂，抑制 VEGFR1，VEGFR2，VEGFR3，PDGFRβ，c-Kit，FGFR1，c-Fms的IC₅₀分别为10，30，47，84，74，140，146 nM。

研究领域：Protein Tyrosine Kinase/RTK | Autophagy

作用靶点：VEGFR | c-Kit | PDGFR | Autophagy | FGFR

In Vitro: Pazopanib shows good potency against all the human VEGFR receptors with an IC₅₀ of 10, 30, and 47 nM for VEGFR-1, -2, and -3, respectively. Significant activity is also seen against the closely related tyrosine receptor kinases PDGFRβ, c-Kit, FGF-R1, and c-fms with IC₅₀s of 84, 74, 140, and 146 nM, respectively. In cellular assays, in addition to inhibiting the VEGF-induced proliferation of HUVECs, Pazopanib potently inhibits VEGF-induced phosphorylation of VEGFR-2 in HUVEC cells with an IC₅₀ of ~8 nM. Pazopanib possesses good pharmacokinetics in rat, dog, and monkey with low clearances (1.4-1.7 mL/min/kg) and good oral bioavailabilities (72, 47, 65%) dosed at 10, 1, and 5 mg/kg, respectively. The cytochrome P450 profile is also improved with inhibition >10 μM against the isozymes tested, with the exception of 2C9 (7.9 μM).

In Vivo: Treatment of mice with 100 mg/kg of Pazopanib twice daily for five days results in significant inhibition in the degree of vascularization. The antiangiogenic activity of Pazopanib is examined in mice bearing established human xenografts (200 250 mm³) using HT29 (colon carcinoma), A375P (melanoma), and HN5 (head and neck carcinoma) tumors following a standard three-week course of therapy. The HN5 and HT29 xenografts responded better at all doses compared to the A375P model, which is historically more resistant to VEGFR-2 inhibitors. As support that the observed inhibition of xenograft growth is working through an antiangiogenic rather than antitumor mechanism, no antiproliferative activity is observed below 10 μM for Pazopanib against these human tumor lines (HT29, HN5, A375P) growing in serum-containing media. No significant effect on the body weight of mice is observed, and the animals appeared healthy and active throughout the study duration.
The quantity of adherent leukocytes in the Pazopanib eye drops group is less than untreated diabetic animals and more than the healthy animals. Average leukocytes adhered to the retinal vasculature in healthy animals is 37.2±7.8, whereas diabetic animals have an average value of 102±15.6, approximately 3-fold higher than healthy animals. Animals treated with 0.5 % w/v Pazopanib suspension demonstrate 69.5±9.5 leukocytes adhered in their retinal vasculature, which is found to be significantly lower than diabetic animals.

品牌介绍:
•   MCE (MedChemExpress) 拥有200 多种全球独家化合物库，我们致力于为全球科研客户提供前沿最全的高品质小分子活性化合物；
•   50,000 多种高选择性抑制剂、激动剂涉及各热门信号通路及疾病领域；
•   产品种类涵盖各种重组蛋白，多肽，常用试剂盒，更有 PROTAC、ADC 等特色产品，广泛应用于新药研发、生命科学等科研项目；
•   提供虚拟筛选，离子通道筛选，代谢组学分析检测分析，药物筛选等专业技术服务；
•   设有专业的实验中心和严格的质控、验证体系；
•   提供 LC/MS、NMR、HPLC、手性分析、元素分析等各项质检报告，确保产品的高纯度、高品质；
•   产品的生物活性多经各国客户实验验证；
•   Nature, Cell, Science 等多种顶级期刊及制药专利收录了MCE客户的科研成果；
•   专业团队跟踪最新的制药及生命科学研究进展，为您提供全球最新的活性化合物；
•   与世界各大制药公司及知名科研机构建立了长期的合作。