A β-Secretase (BACE1) Inhibitor Hispidin from the Mycelial Cultures of<i>Phellinus linteus</i>
作者:Park, In-Hye、Jeon, So-Young、Lee, Hee-Ju、Kim, Sang-In、Song, Kyung-Sik
DOI:10.1055/s-2004-815491
日期:2004.2
In the course of screening for anti-dementia agents from natural products, a β-secretase (BACE1) inhibitor was isolated from the culture broth of Phellinus linteus and identified as hispidin. It showed an IC50 value of 4.9 × 10-6 M and a Ki value of 8.4 × 10-6 M. The compound was a non-competitive inhibitor. Hispidin also inhibited a prolyl endopeptidase (IC50 = 1.6 × 10-5 M, Ki = 2.4 × 10-5 M), but it was less inhibitory to α-secretase (TACE) and other serine proteases such as chymotrypsin, trypsin, and elastase.
在筛选天然产品中的抗痴呆药物过程中,从榧树菌的培养液中分离出一种β-分泌酶(BACE1)抑制剂,并被鉴定为毛果苣苔素。它的IC50值为4.9 × 10^-6 M,Ki值为8.4 × 10^-6 M。该化合物是一种非竞争性抑制剂。毛果苣苔素还抑制了脯氨酸内肽酶(IC50 = 1.6 × 10^-5 M,Ki = 2.4 × 10^-5 M),但对α-分泌酶(TACE)以及其他丝氨酸蛋白酶如胰凝乳蛋白酶、胰蛋白酶和弹性酶的抑制作用较弱。