Synthesis, characterization, and biological activity of a triphenylphosphonium-containing imidazolium salt against select bladder cancer cell lines

Philip H. Abbosh, Michael L. Stromyer, Marie R. Southerland, Uttam Satyal, Rahmat K. Sikder, David J. Weader, Jessi A. Baughman, Wiley J. Youngs

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Imidazolium salts have shown great promise as anticancer materials. A new imidazolium salt (TPP1), with a triphenylphosphonium substituent, has been synthesized and evaluated for in vitro and in vivo cytotoxicity against bladder cancer. TPP1 was determined to have a GI50 ranging from 200 to 250 μM over a period of 1 h and the ability to effectively inhibit bladder cancer. TPP1 induces apoptosis, and it appears to act as a direct mitochondrial toxin. TPP1 was applied intravesically to a bladder cancer mouse model based on the carcinogen N-butyl-N-(4-hydroxybutyl)nitrosamine (BBN). Cancer selectivity of TPP1 was demonstrated, as BBN-induced tumors exhibited apoptosis but normal adjacent urothelium did not. These results suggest that TPP1 may be a promising intravesical agent for the treatment of bladder cancer.

Original languageEnglish
Article number111832
Pages (from-to)111832
JournalEuropean Journal of Medicinal Chemistry
Volume185
DOIs
StatePublished - Jan 1 2020

Keywords

  • Animals
  • Antineoplastic Agents/chemical synthesis
  • Cell Line, Tumor
  • Cell Proliferation/drug effects
  • Dose-Response Relationship, Drug
  • Drug Screening Assays, Antitumor
  • Female
  • Humans
  • Imidazoles/chemical synthesis
  • Male
  • Mice
  • Models, Molecular
  • Molecular Structure
  • Neoplasms, Experimental/drug therapy
  • Organophosphorus Compounds/chemical synthesis
  • Structure-Activity Relationship
  • Urinary Bladder Neoplasms/drug therapy

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