Bifunctional conjugates with potent inhibitory activity towards cyclooxygenase and histone deacetylase

Bioorg Med Chem. 2017 Feb 1;25(3):1202-1218. doi: 10.1016/j.bmc.2016.12.032. Epub 2016 Dec 24.

Abstract

We herein disclose a series of compounds with potent inhibitory activities towards histone deacetylases (HDAC) and cyclooxygenases (COX). These compounds potently inhibited the growth of cancer cell lines consistent with their anti-COX and anti-HDAC activities. While compound 2b showed comparable level of COX-2 selectivity as celecoxib, compound 11b outperformed indomethacin in terms of selectivity towards COX-2 relative to COX-1. An important observation with our lead compounds (2b, 8, 11b, and 17b) is their enhanced cytotoxicity towards androgen dependent prostate cancer cell line (LNCaP) relative to androgen independent prostate cancer cell line (DU-145). Interestingly, compounds 2b and 17b arrested the cell cycle progression of LNCaP in the S-phase, while compound 8 showed a G0/G1 arrest, similar to SAHA. Relative to SAHA, these compounds displayed tumor-selective cytotoxicity as they have low anti-proliferative activity towards healthy cells (VERO); an attribute that makes them attractive candidates for drug development.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, N.I.H., Extramural

MeSH terms

  • Antineoplastic Agents / chemical synthesis
  • Antineoplastic Agents / chemistry
  • Antineoplastic Agents / pharmacology*
  • Celecoxib / chemical synthesis
  • Celecoxib / chemistry
  • Celecoxib / pharmacology*
  • Cell Cycle / drug effects
  • Cell Line
  • Cell Proliferation / drug effects
  • Cell Survival / drug effects
  • Cyclooxygenase Inhibitors / chemical synthesis
  • Cyclooxygenase Inhibitors / chemistry
  • Cyclooxygenase Inhibitors / pharmacology*
  • Dose-Response Relationship, Drug
  • Drug Screening Assays, Antitumor
  • Histone Deacetylase Inhibitors / chemical synthesis
  • Histone Deacetylase Inhibitors / chemistry
  • Histone Deacetylase Inhibitors / pharmacology*
  • Histone Deacetylases / metabolism*
  • Humans
  • Indomethacin / chemical synthesis
  • Indomethacin / chemistry
  • Indomethacin / pharmacology*
  • Models, Molecular
  • Molecular Structure
  • Prostaglandin-Endoperoxide Synthases / metabolism*
  • Structure-Activity Relationship

Substances

  • Antineoplastic Agents
  • Cyclooxygenase Inhibitors
  • Histone Deacetylase Inhibitors
  • Prostaglandin-Endoperoxide Synthases
  • Histone Deacetylases
  • Celecoxib
  • Indomethacin