Synthesis and anti-cancer potential of the positional isomers of NOSH-aspirin (NBS-1120) a dual nitric oxide and hydrogen sulfide releasing hybrid

Bioorg Med Chem Lett. 2015 Oct 15;25(20):4677-82. doi: 10.1016/j.bmcl.2015.08.023. Epub 2015 Aug 14.

Abstract

We recently reported the synthesis of NOSH-aspirin, a novel hybrid compound capable of releasing both nitric oxide (NO) and hydrogen sulfide (H2S). In NOSH-aspirin, the two moieties that release NO and H2S are covalently linked at the 1, 2 positions of acetyl salicylic acid, i.e., ortho-NOSH-aspirin. Here we report on the synthesis of meta- and para-NOSH-aspirins. We also made a head-to-head evaluation of the effects of these three positional isomers of NOSH-aspirin on colon cancer cell kinetics and induction of reactive oxygen species, which in recent years has emerged as a key event in causing cancer cell regression. Electron donating/withdrawing groups incorporated about the benzoate moiety significantly affected the potency of these compounds with respect to colon cancer cell growth inhibition.

Keywords: Cell kinetics; Colon cancer; Hydrogen sulfide; NOSH-aspirin; Nitric oxide; Reactive oxygen species.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Antineoplastic Agents / chemical synthesis*
  • Antineoplastic Agents / chemistry
  • Antineoplastic Agents / pharmacology*
  • Apoptosis / drug effects
  • Aspirin / analogs & derivatives*
  • Aspirin / chemical synthesis
  • Aspirin / chemistry
  • Aspirin / pharmacology
  • Cell Cycle / drug effects
  • Cell Line, Tumor
  • Cell Proliferation / drug effects
  • Disulfides / chemical synthesis
  • Disulfides / chemistry
  • Disulfides / pharmacology*
  • Dose-Response Relationship, Drug
  • Drug Screening Assays, Antitumor
  • HT29 Cells
  • Humans
  • Hydrogen Sulfide / metabolism*
  • Molecular Structure
  • Nitrates / chemical synthesis
  • Nitrates / chemistry
  • Nitrates / pharmacology*
  • Nitric Oxide / metabolism*
  • Reactive Oxygen Species / metabolism
  • Structure-Activity Relationship

Substances

  • 4-(3-thioxo-3H-1,2-dithiol-5-yl)phenyl 2-((4-(nitrooxy)butanoyl)oxy)benzoate
  • Antineoplastic Agents
  • Disulfides
  • Nitrates
  • Reactive Oxygen Species
  • Nitric Oxide
  • Aspirin
  • Hydrogen Sulfide