Discovery of N1-(4-((7-Cyclopentyl-6-(dimethylcarbamoyl)-7 H-pyrrolo[2,3- d]pyrimidin-2-yl)amino)phenyl)- N8-hydroxyoctanediamide as a Novel Inhibitor Targeting Cyclin-dependent Kinase 4/9 (CDK4/9) and Histone Deacetlyase1 (HDAC1) against Malignant Cancer

J Med Chem. 2018 Apr 12;61(7):3166-3192. doi: 10.1021/acs.jmedchem.8b00209. Epub 2018 Mar 23.

Abstract

A series of novel, highly potent, selective inhibitors targeting both CDK4/9 and HDAC1 have been designed and synthesized. N1-(4-((7-Cyclopentyl-6-(dimethylcarbamoyl)-7 H-pyrrolo[2,3- d] pyrimidin-2-yl)amino)phenyl)- N8-hydroxyoctanediamide (6e) was discovered. The lead compound 6e with excellent CDK4/9 and HDAC1 inhibitory activity of IC50 = 8.8, 12, and 2.2 nM, respectively, can effectively induce apoptosis of cancer cell lines. The kinase profiling of compound 6e showed excellent selectivity and specificity. Compound 6e induces G2/M arrest in high concentration and G0/G1 arrest in low concentration to prevent the proliferation and differentiation of cancer cells. Mice bared-breast cancer treated with 6e showed significant antitumor efficacy. The insight into mechanisms of 6e indicated that it could induce cancer cell death via cell apoptosis based on CDK4/9 and HDAC1 repression and phosphorylation of p53. Our data demonstrated the novel compound 6e could be a promising drug candidate for cancer therapy.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antineoplastic Agents / chemical synthesis*
  • Antineoplastic Agents / pharmacokinetics
  • Antineoplastic Agents / pharmacology*
  • Apoptosis / drug effects
  • Breast Neoplasms / drug therapy*
  • Cell Cycle Checkpoints / drug effects
  • Cell Differentiation / drug effects
  • Cell Line, Tumor
  • Cell Proliferation / drug effects
  • Cyclin-Dependent Kinase 4 / antagonists & inhibitors*
  • Cyclin-Dependent Kinase 9 / antagonists & inhibitors*
  • Female
  • Histone Deacetylase 1 / antagonists & inhibitors*
  • Histone Deacetylase Inhibitors / chemical synthesis*
  • Histone Deacetylase Inhibitors / pharmacokinetics
  • Histone Deacetylase Inhibitors / pharmacology*
  • Humans
  • Male
  • Mice
  • Mice, Inbred BALB C
  • Models, Molecular
  • Phosphorylation / drug effects
  • Structure-Activity Relationship
  • Substrate Specificity
  • Tumor Suppressor Protein p53 / metabolism

Substances

  • Antineoplastic Agents
  • Histone Deacetylase Inhibitors
  • Tumor Suppressor Protein p53
  • CDK4 protein, human
  • CDK9 protein, human
  • Cyclin-Dependent Kinase 4
  • Cyclin-Dependent Kinase 9
  • Histone Deacetylase 1