就其DT-心肌黄递酶底物活性,DNA还原烷基化作用,细胞抑制/细胞毒性活性和体内活性进行了研究,研究了由1-9系列代表的大量氮丙啶基醌。结果,关于以下方面进行了概括:DT-黄递酶底物设计,DT-黄递酶-细胞毒性定量结构-活性关系(QSAR)和DNA还原烷基化剂设计。在人重组DT-心肌黄递酶的底物特异性与人H460非小细胞肺癌细胞系中的细胞毒性之间存在饱和关系。这种关系的解释是,对于具有高DT-黄递酶底物特异性的底物,还原激活不再是速率限制。在吲哚和环戊[b]吲哚体系中,高DT-黄递质酶底物特异性是不希望的,因为其结果是失去了癌症的选择性,并增加了毒性。我们得出结论,这种类型的叠氮基醌应具有对DT-黄递酶的底物特异性(V(max)/ K(M))<10 x 10(-4)s(-1),以免毒性太大或非选择性。虽然系列1-9的细胞抑制活性和细胞毒性活性需要一些DNA烷基化,但烷基化过多会导致癌症选择
就其DT-心肌黄递酶底物活性,DNA还原烷基化作用,细胞抑制/细胞毒性活性和体内活性进行了研究,研究了由1-9系列代表的大量氮丙啶基醌。结果,关于以下方面进行了概括:DT-黄递酶底物设计,DT-黄递酶-细胞毒性定量结构-活性关系(QSAR)和DNA还原烷基化剂设计。在人重组DT-心肌黄递酶的底物特异性与人H460非小细胞肺癌细胞系中的细胞毒性之间存在饱和关系。这种关系的解释是,对于具有高DT-黄递酶底物特异性的底物,还原激活不再是速率限制。在吲哚和环戊[b]吲哚体系中,高DT-黄递质酶底物特异性是不希望的,因为其结果是失去了癌症的选择性,并增加了毒性。我们得出结论,这种类型的叠氮基醌应具有对DT-黄递酶的底物特异性(V(max)/ K(M))<10 x 10(-4)s(-1),以免毒性太大或非选择性。虽然系列1-9的细胞抑制活性和细胞毒性活性需要一些DNA烷基化,但烷基化过多会导致癌症选择
Aziridinyl quinone antitumor agents based on indoles and cyclopent[b]indoles
申请人:——
公开号:US20030139609A1
公开(公告)日:2003-07-24
A large number of aziridinyl quinones represented by Series 1-9 were studied with respect to their DT-diaphorase substrate activity, DNA reductive alkylation, cytostatic/cytotoxic activity, and in vivo activity. As a result generalizations have been made with respect with respect to the following: DT-diaphorase substrate design, DT-diaphorase-cytotoxicity QSAR, and DNA reductive alkylating agent design. A saturating relationship exists between the substrate specificity for human recombinant DT-diaphorase and the cytotoxicity in the human H
460
non-small-cell lung cancer cell line. The interpretation of this relationship is that reductive activation is no longer rate limiting for substrates with high DT-diaphorase substrate specificities. High DT-diaphorase substrate specificity is not desirable in the indole and cylopent[b]indole systems because of the result is the loss of cancer selectivity along with increased toxicity. We conclude that aziridinyl quinones of this type should possess a substrate specificity (VMAX/KM )<10×10-4 s-1 for DT-diaphorase in order not to be too toxic or nonselective. While some DNA alkylation was required for cytostatic and cytotoxic activity by Series 1-9, too much alkylation results in loss of cancer selectivity as well as increased in vivo toxicity. Indeed, the most lethal compounds are the indole systems with a leaving group in the 3a-position (like the antitumor agent EO-9). We conclude that relatively poor DNA alkylating agents (according to our assay) show the lowest toxicity with the highest antitumor activity.
Aziridinyl Quinone Antitumor Agents Based on Indoles and Cyclopent[<i>b</i>]indoles: Structure−Activity Relationships for Cytotoxicity and Antitumor Activity
作者:Edward B. Skibo、Chengguo Xing、Robert T. Dorr
DOI:10.1021/jm010085u
日期:2001.10.1
DT-diaphorase substrate activity, DNA reductive alkylation, cytostatic/cytotoxicactivity, and in vivo activity. As a result, generalizations have been made with respect with respect to the following: DT-diaphorase substrate design, DT-diaphorase-cytotoxicity quantitative structure-activityrelationship (QSAR), and DNA reductive alkylating agent design. A saturating relationship exists between the substrate
就其DT-心肌黄递酶底物活性,DNA还原烷基化作用,细胞抑制/细胞毒性活性和体内活性进行了研究,研究了由1-9系列代表的大量氮丙啶基醌。结果,关于以下方面进行了概括:DT-黄递酶底物设计,DT-黄递酶-细胞毒性定量结构-活性关系(QSAR)和DNA还原烷基化剂设计。在人重组DT-心肌黄递酶的底物特异性与人H460非小细胞肺癌细胞系中的细胞毒性之间存在饱和关系。这种关系的解释是,对于具有高DT-黄递酶底物特异性的底物,还原激活不再是速率限制。在吲哚和环戊[b]吲哚体系中,高DT-黄递质酶底物特异性是不希望的,因为其结果是失去了癌症的选择性,并增加了毒性。我们得出结论,这种类型的叠氮基醌应具有对DT-黄递酶的底物特异性(V(max)/ K(M))<10 x 10(-4)s(-1),以免毒性太大或非选择性。虽然系列1-9的细胞抑制活性和细胞毒性活性需要一些DNA烷基化,但烷基化过多会导致癌症选择