Novel amphiphilic cationic porphyrin and its Ag(II) complex as potential anticancer agents.

Published

Journal Article

In the present study we have synthesized a novel amphiphilic porphyrin and its Ag(II) complex through modification of water-soluble porphyrinic structure in order to increase its lipophilicity and in turn pharmacological potency. New cationic non-symmetrical meso-substituted porphyrins were characterized by UV-visible, electrospray ionization mass spectrometry (ESI-MS), (1)H NMR techniques, lipophilicity (thin-layer chromatographic retention factor, Rf), and elemental analysis. The key toxicological profile (i.e. cytotoxicity and cell line- (cancer type-) specificity; genotoxicity; cell cycle effects) of amphiphilic Ag porphyrin was studied in human normal and cancer cell lines of various tissue origins and compared with its water-soluble analog. Structural modification of the molecule from water-soluble to amphiphilic resulted in a certain increase in the cytotoxicity and a decrease in cell line-specificity. Importantly, Ag(II) porphyrin showed less toxicity to normal cells and greater toxicity to their cancerous counterparts as compared to cisplatin. The amphiphilic complex was also not genotoxic and demonstrated a slight cytostatic effect via the cell cycle delay due to the prolongation of S-phase. As expected, the performed structural modification affected also the photocytotoxic activity of metal-free amphiphilic porphyrin. The ligand tested on cancer cell line revealed a dramatic (more than 70-fold) amplification of its phototoxic activity as compared to its water-soluble tetracationic metal-free analog. The compound combines low dark cytotoxicity with 5 fold stronger phototoxicity relative to Chlorin e6 and could be considered as a potential photosensitizer for further development in photodynamic therapy.

Full Text

Duke Authors

Cited Authors

  • Tovmasyan, A; Babayan, N; Poghosyan, D; Margaryan, K; Harutyunyan, B; Grigoryan, R; Sarkisyan, N; Spasojevic, I; Mamyan, S; Sahakyan, L; Aroutiounian, R; Ghazaryan, R; Gasparyan, G

Published Date

  • November 2014

Published In

Volume / Issue

  • 140 /

Start / End Page

  • 94 - 103

PubMed ID

  • 25086237

Pubmed Central ID

  • 25086237

Electronic International Standard Serial Number (EISSN)

  • 1873-3344

Digital Object Identifier (DOI)

  • 10.1016/j.jinorgbio.2014.06.013

Language

  • eng

Conference Location

  • United States