Discovery of 2,4-thiazolidinedione-tethered coumarins as novel selective inhibitors for carbonic anhydrase IX and XII isoforms

J Enzyme Inhib Med Chem. 2022 Dec;37(1):531-541. doi: 10.1080/14756366.2021.2024528.

Abstract

Different 2,4-thiazolidinedione-tethered coumarins 5a-b, 10a-n and 11a-d were synthesised and evaluated for their inhibitory action against the cancer-associated hCAs IX and XII, as well as the physiologically dominant hCAs I and II to explore their selectivity. Un-substituted phenyl-bearing coumarins 10a, 10 h, and 2-thienyl/furyl-bearing coumarins 11a-c exhibited the best hCA IX (KIs between 0.48 and 0.93 µM) and hCA XII (KIs between 0.44 and 1.1 µM) inhibitory actions. Interestingly, none of the coumarins had any inhibitory effect on the off-target hCA I and II isoforms. The sub-micromolar compounds from the biochemical assay, coumarins 10a, 10 h and 11a-c, were assessed in an in vitro antiproliferative assay, and then the most potent antiproliferative agent 11a was tested to explore its impact on the cell cycle phases and apoptosis in MCF-7 breast cancer cells to provide more insights into the anticancer activity of these compounds.

Keywords: 3-acetylcoumarin; Carbonic anhydrase inhibitors; anticancer agents; apoptosis induction; hypoxic tumours.

MeSH terms

  • Antigens, Neoplasm / metabolism
  • Apoptosis / drug effects
  • Carbonic Anhydrase IX / antagonists & inhibitors*
  • Carbonic Anhydrase IX / metabolism
  • Carbonic Anhydrase Inhibitors / chemical synthesis
  • Carbonic Anhydrase Inhibitors / chemistry
  • Carbonic Anhydrase Inhibitors / pharmacology*
  • Carbonic Anhydrases / metabolism*
  • Cell Cycle / drug effects
  • Cell Proliferation / drug effects
  • Cell Survival / drug effects
  • Coumarins / chemical synthesis
  • Coumarins / chemistry
  • Coumarins / pharmacology*
  • Dose-Response Relationship, Drug
  • Drug Discovery*
  • Drug Screening Assays, Antitumor
  • Humans
  • MCF-7 Cells
  • Molecular Structure
  • Structure-Activity Relationship
  • Thiazolidinediones / chemical synthesis
  • Thiazolidinediones / chemistry
  • Thiazolidinediones / pharmacology*

Substances

  • Antigens, Neoplasm
  • Carbonic Anhydrase Inhibitors
  • Coumarins
  • Thiazolidinediones
  • 2,4-thiazolidinedione
  • CA9 protein, human
  • Carbonic Anhydrase IX
  • Carbonic Anhydrases
  • carbonic anhydrase XII

Grants and funding

This work was funded by the Deanship of Scientific Research at Princess Nourah bint Abdulrahman University, through the Research Groups Program Grant no [RGP-1440 − 0025](2). The work was also financed by the Italian Ministry for Education and Science (MIUR), grant PRIN: rot. 2017XYBP2R, and by Ente Cassa di Risparmio di Firenze (ECRF), grant [CRF2020.1395] to CTS.