Novel metal chelating molecules with anticancer activity. Striking effect of the imidazole substitution of the histidine–pyridine–histidine system
作者:Taha F.S. Ali、Kana Iwamaru、Halil Ibrahim Ciftci、Ryoko Koga、Masahiro Matsumoto、Yasunori Oba、Hiromasa Kurosaki、Mikako Fujita、Yoshinari Okamoto、Kazuo Umezawa、Mitsuyoshi Nakao、Takuichiro Hide、Keishi Makino、Jun-ichi Kuratsu、Mohamed Abdel-Aziz、Gamal El-Din A.A. Abuo-Rahma、Eman A.M. Beshr、Masami Otsuka
DOI:10.1016/j.bmc.2015.07.044
日期:2015.9
Previously we have reported a metal chelating histidine-pyridine-histidine system possessing a trityl group on the histidine imidazole, namely HPH-2Trt, which induces apoptosis in human pancreatic adenocarcinoma AsPC-1 cells. Herein the influence of the imidazole substitution of HPH-2Trt was examined. Five related compounds, HPH-1Trt, HPH-2Bzl, HPH-1Bzl, HPH-2Me, and HPH-1Me were newly synthesized and screened for their activity against AsPC-1 and brain tumor cells U87 and U251. HPH-1Trt and HPH-2Trt were highly active among the tested HPH compounds. In vitro DNA cleavage assay showed both HPH-1Trt and HPH-2Trt completely disintegrate pUC19 DNA. The introduction of trityl group decisively potentiated the activity. (C) 2015 Elsevier Ltd. All rights reserved.