Synthesis, biological evaluation and modeling studies of terphenyl topoisomerase IIα inhibitors as anticancer agents
摘要:
We report the synthesis and evaluation of a series of novel terphenyls. Compound 17 had the most potent anticancer activity, indicating that the phenolic hydroxyl was a key group. A DNA relaxation test showed that compound 17 had a strong inhibitory effect on TOP2 alpha, but not on TOP1, which was consistent with the docking analysis results. We performed a 3D-QSAR study using CoMFA and CoMSIA to determine, for the first time, the chemical-biological relationship in the inhibition of TOP by terphenyls. The CoMFA and CoMSIA model had good modeling statistics: leave-one-out q(2) of 0.605 and 0.622, r(2) of 0.998 and 0.994, and r(2), pred (test set) of 0.742 and 0.660. These results suggest that the ortho-phenolic hydroxyl on ring A is important for producing terphenyls with more efficacious activity. (C) 2015 Elsevier Masson SAS. All rights. reserved.
A novel p-terphenyl derivative inducing cell-cycle arrest and apoptosis in MDA-MB-435 cells through topoisomerase inhibition
摘要:
A novel series of p-terphenyl derivatives (1-4, 1a-4a) was successfully synthesized and their in vitro anticancer activities were evaluated. Compound 1, showing the best antiproliferative activity with IC50 < 1 mu M against MDA-MB-435 cells, was further investigated. Compound 1 brought about a remarkable accumulation of MDA-MB-435 cells in G2/M phase prior to the induction of apoptosis. Further antitumor mechanism study indicated that compound 1, which inhibited the enzyme activity of Topo I and Topo II alpha by interfering predominantly with the enzyme, could be topoisomerase suppressors instead of poisons. We conclude that compound 1 represents a novel class of Topo catalytic suppressors for developing new chemotherapeutic agents. (C) 2013 Elsevier Masson SAS. All rights reserved.
A novel series of p-terphenyl derivatives (1-4, 1a-4a) was successfully synthesized and their in vitro anticancer activities were evaluated. Compound 1, showing the best antiproliferative activity with IC50 < 1 mu M against MDA-MB-435 cells, was further investigated. Compound 1 brought about a remarkable accumulation of MDA-MB-435 cells in G2/M phase prior to the induction of apoptosis. Further antitumor mechanism study indicated that compound 1, which inhibited the enzyme activity of Topo I and Topo II alpha by interfering predominantly with the enzyme, could be topoisomerase suppressors instead of poisons. We conclude that compound 1 represents a novel class of Topo catalytic suppressors for developing new chemotherapeutic agents. (C) 2013 Elsevier Masson SAS. All rights reserved.
Synthesis, biological evaluation and modeling studies of terphenyl topoisomerase IIα inhibitors as anticancer agents
作者:Jin Qiu、Baobing Zhao、Wanxia Zhong、Yuemao Shen、Houwen Lin
DOI:10.1016/j.ejmech.2015.03.010
日期:2015.4
We report the synthesis and evaluation of a series of novel terphenyls. Compound 17 had the most potent anticancer activity, indicating that the phenolic hydroxyl was a key group. A DNA relaxation test showed that compound 17 had a strong inhibitory effect on TOP2 alpha, but not on TOP1, which was consistent with the docking analysis results. We performed a 3D-QSAR study using CoMFA and CoMSIA to determine, for the first time, the chemical-biological relationship in the inhibition of TOP by terphenyls. The CoMFA and CoMSIA model had good modeling statistics: leave-one-out q(2) of 0.605 and 0.622, r(2) of 0.998 and 0.994, and r(2), pred (test set) of 0.742 and 0.660. These results suggest that the ortho-phenolic hydroxyl on ring A is important for producing terphenyls with more efficacious activity. (C) 2015 Elsevier Masson SAS. All rights. reserved.