Pyrazino[1,2-b]isoquinolines: Synthesis and study of their cytostatic and cytotoxic properties
摘要:
The in vitro antitumor potential of novel pyrazino[1,2-b]-isoquinoline-4-ones that contain a half portion of significant natural products was explored in three cancer cell lines: MDA-MB 231 human breast carcinoma, A-549 human lung carcinoma, and HT-29 human colon carcinoma. In general, these compounds show mid to low mu M GI(50)s, but LC(50)s over 100 mu M with the exceptions of compounds 3b and 31 that are moderately toxic in all cell lines, while compound 4a is highly toxic and selective for HT-29 cells with LC50 values in the high nanomolar range. Experiments directed to elucidate possible mechanisms of action with compounds 3a, 29, and 31 showed that compound 3a is able to efficiently induce apoptosis triggered directly from the G2/M phase of cell cycle, while compounds 29 and 31 are potentially cytostatic agents that induce the G1/S arrest of cell cycle. All three compounds do not act through DNA damage, since they do not activate this signaling at the level of sensors, transducers, and executers. Furthermore, the apoptosis induction of 3a is not mediated by activation of pro-apoptotic kinases JNK and p38 or by activation of AKT. (C) 2008 Elsevier Ltd. All rights reserved.
Cytotoxicity mechanisms of pyrazino[1,2-b]isoquinoline-4-ones and SAR studies
作者:Irene Ortín、Juan Francisco González、Elena de la Cuesta、Cristina Manguan-García、Rosario Perona、Carmen Avendaño
DOI:10.1016/j.bmc.2009.10.007
日期:2009.12
analogs might be useful in the treatment of colon cancer through combination therapies with cisplatin or other anticancer drugs that affect the cytoskeleton integrity such as taxol and taxotere. SARstudies with compounds obtained by manipulation of the N(2) and C(4)-functional groups and the C(6)-chain of compound 1b have confirmed the importance of these structural features in the in vitro antitumor
Pyrazino[1,2-b]isoquinolines: Synthesis and study of their cytostatic and cytotoxic properties
作者:Irene Ortín、Juan Francisco González、Elena de la Cuesta、Cristina Manguan-García、Rosario Perona、Carmen Avendaño
DOI:10.1016/j.bmc.2008.07.083
日期:2008.10
The in vitro antitumor potential of novel pyrazino[1,2-b]-isoquinoline-4-ones that contain a half portion of significant natural products was explored in three cancer cell lines: MDA-MB 231 human breast carcinoma, A-549 human lung carcinoma, and HT-29 human colon carcinoma. In general, these compounds show mid to low mu M GI(50)s, but LC(50)s over 100 mu M with the exceptions of compounds 3b and 31 that are moderately toxic in all cell lines, while compound 4a is highly toxic and selective for HT-29 cells with LC50 values in the high nanomolar range. Experiments directed to elucidate possible mechanisms of action with compounds 3a, 29, and 31 showed that compound 3a is able to efficiently induce apoptosis triggered directly from the G2/M phase of cell cycle, while compounds 29 and 31 are potentially cytostatic agents that induce the G1/S arrest of cell cycle. All three compounds do not act through DNA damage, since they do not activate this signaling at the level of sensors, transducers, and executers. Furthermore, the apoptosis induction of 3a is not mediated by activation of pro-apoptotic kinases JNK and p38 or by activation of AKT. (C) 2008 Elsevier Ltd. All rights reserved.