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CAS No. : 1575818-46-0
MCE 国际站:PRN694
产品活性:PRN694 是一种不可逆的,高效选择性的,有效共价结合的白介素 2 诱导细胞激酶 ITK、 静息淋巴细胞激酶 RLK 双重抑制剂,抑制 ITK、RLK 的IC50 分别为 0.3 nM 和 1.4 nM。PRN694 延长靶向停留时间,使效应细胞在体内外持久衰减。
研究领域:Protein Tyrosine Kinase/RTK
作用靶点:Itk
In Vitro: PRN694 inhibits TEC, BTK, BMX, BLK, JAK3 with IC50s of 3.3, 17, 17, 125, 30 nM, respectively.
Immunoblot analysis of TCR activation pathways reveales that PRN694 blocks activation or nuclear translocation of NFAT1, JunB, pIκBα, and pERK. Results reveal inhibition of Ca2+ signaling with PRN694 at all concentrations above 1 nM. PRN694 significantly attenuates NK cell FcR-induced killing at concentrations exceeding 0.37 μM.
Day 6 flow cytometry analysis reveals that PRN694 significantly inhibits the anti-CD3/CD28-induced proliferation of both CD4 and CD8 T-cells (p<0.01).
In Vivo: The PRN694 occupancy of ITK is 98, 95, and 54% at 1, 6, and 14 h, respectively. The concentrations of PRN694 in the plasma are 2.8, 0.66, and 0.027 μM at 1, 6, and 14 h, respectively. At 14 h, the plasma level of PRN694 is over 10 fold lower than the IC50 in whole blood. RN694 treatment also results in significantly lower weights relative to vehicle (p<0.05).
Colitis studies show reduced numbers of CD4+ T cells present in the colonic epithelium of PRN694-treated mice compare with controls.
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