Inhibits TGFbeta-induced downstream transcriptional activation of ALK5 expressed in CHO-HIR cells assessed as intracellular translocation of EGFP-Smad2 with IC50 of 0.35μM
SB-431542溶解在DMSO中,濃度為10 mM。在桿狀病毒表達(dá)系統(tǒng)中,TGFβRI的激酶域,:第200號氨基酸到C-端,和全長Smad3蛋白表達(dá)作為 N-端谷胱甘肽S轉(zhuǎn)移酶(GST)融合蛋白。加入谷胱甘肽凝膠來純化蛋白。用0.1 M 無菌過濾的碳酸氫鈉(pH 為7.6)包被FlashPlates,每100 μL中加入700 ng GST-Smad3。實驗buffer包含50 mM HEPES (pH 為7.4), 5 mM MgCl2, 1 mM CaCl2, 1 mM DTT, 100 mM GTP, 3 μM ATP,0.5 μCi/孔33P-ATP, 及85 ng GST-ALK5。 在30oC下溫育3小時。在Packard TopCount 96孔閃爍計數(shù)器上讀數(shù)。
問題 1:
I would appreciate it if you can help me in figuring out the formulation for this drug in vivo experiments.
回答:
S1067 SB431542 in 1% DMSO+30% polyethylene glycol+1% Tween 80 at 30 mg/ml is a suspension for oral gavage. It can also be dissolved in 2% DMSO+30% PEG 300+ddH2O at 5 mg/ml as a clear solution for IP injection.