Design, Synthesis, and Evaluation of Aza-Peptide Michael Acceptors as Selective and Potent Inhibitors of Caspases-2, -3, -6, -7, -8, -9, and -10
作者:Özlem Doǧan Ekici、Zhao Zhao Li、Amy J. Campbell、Karen Ellis James、Juliana L. Asgian、Jowita Mikolajczyk、Guy S. Salvesen、Rajkumar Ganesan、Stjepan Jelakovic、Markus G. Grütter、James C. Powers
DOI:10.1021/jm0601405
日期:2006.9.1
novel class of inhibitors that are potent and specific for caspases-2, -3, -6, -7, -8, -9, and -10. The second-order rate constants are in the order of 10(6) M(-1) s(-1). The aza-peptide Michael acceptor inhibitor 18t (Cbz-Asp-Glu-Val-AAsp-trans-CH=CH-CON(CH(2)-1-Naphth)(2) is the most potent compound and it inhibits caspase-3 with a k(2) value of 5620000 M(-1) s(-1). The inhibitor 18t is 13700, 190
氮杂肽迈克尔受体是一类新颖的抑制剂,对caspases-2,-3,-6,-7,-8,-9和-10具有特异性。二阶速率常数约为10(6)M(-1)s(-1)。氮杂肽迈克尔受体抑制剂18t(Cbz-Asp-Glu-Val-AAsp-trans-CH = CH-CON(CH(2)-1-Naphth)(2)是最有效的化合物,它抑制caspase-3 ak(2)值为5620000 M(-1)s(-1)。抑制剂18t对caspase-3的选择性比caspases-2,-6高13700、190、6.4、594、37500和173倍(分别为-7,-8,-9和-10),以caspase特异性序列设计的氮杂肽Michael受体具有选择性,并且与氏族CA半胱氨酸蛋白酶(如木瓜蛋白酶,组织蛋白酶B和钙蛋白酶)没有任何交叉反应性。