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  2. Discovery of novel cyclin-dependent kinase (CDK) and histone deacetylase (HDAC) dual inhibitors with potent in vitro and in vivo anticancer activity

Discovery of novel cyclin-dependent kinase (CDK) and histone deacetylase (HDAC) dual inhibitors with potent in vitro and in vivo anticancer activity

  • Eur J Med Chem. 2020 Mar 1;189:112073. doi: 10.1016/j.ejmech.2020.112073.
Chunhui Cheng 1 Fan Yun 1 Sadeeq Ullah 1 Qipeng Yuan 2
Affiliations

Affiliations

  • 1 Key Laboratory of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, College of Life Science and Technology, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Beijing, 100029, China.
  • 2 Key Laboratory of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, College of Life Science and Technology, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Beijing, 100029, China. Electronic address: yuanqp@mail.buct.edu.cn.
Abstract

In the current study, we reported a series of novel 1-H-pyrazole-3-carboxamide-based inhibitors targeting histone deacetylase (HDAC) and cyclin-dependent kinase (CDK). The representative compounds N-(4-((2-aminophenyl)carbamoyl)benzyl)-4-(2,6-dichlorobenzamido)-1H-pyrazole-3-carboxamide (7c) and N-(4-(2-((2-aminophenyl)amino)-2-oxoethyl)phenyl)-4-(2,6-dichlorobenzamido)-1H-pyrazole-3-carboxamide (14a) with potent antiproliferative activities towards five solid Cancer cell lines, showed excellent inhibitory activities against HDAC2 (IC50 = 0.25 and 0.24 nM respectively) and CDK2 (IC50 = 0.30 and 0.56 nM respectively). In addition, compounds 7c and 14a significantly inhibited the migration of A375 and H460 cells. Further studies revealed that compounds 7c and 14a could arrest cell cycle in G2/M phase and promote Apoptosis in A375, HCT116, H460 and Hela cells, which was associated with increasing the intracellular Reactive Oxygen Species (ROS) levels. More importantly, compound 7c possessed favorable pharmacokinetic properties with the intraperitoneal bioavailability of 63.6% in ICR mice, and potent in vivo antitumor efficacy in the HCT116 xenograft model. Our study demonstrated that compound 7c provides a promising strategy for the treatment of malignant tumors.

Keywords

Antiproliferative activity; Cyclin-dependent kinase; Histone deacetylase; In vivo antitumor activity; Pharmacokinetic properties.

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