Remarkable photocytotoxicity of curcumin in HeLa cells in visible light and arresting its degradation on oxovanadium(IV) complex formation

Chem Commun (Camb). 2012 Aug 11;48(62):7702-4. doi: 10.1039/c2cc33576j. Epub 2012 Jun 29.

Abstract

Curcumin (Hcur) as a cellular imaging and PDT agent shows remarkable photocytotoxicity in HeLa cells in visible light of 400-700 nm giving IC(50) = 8.2 ± 0.2 μM and its degradation is arrested on formation of photocytotoxic dipyridophenazine (dppz) complex [VO(cur)(dppz)Cl] (IC(50) = 3.3 ± 0.4 μM), while both are less toxic in the dark.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antineoplastic Agents / chemical synthesis*
  • Antineoplastic Agents / pharmacology
  • Cell Survival / drug effects
  • Cell Survival / radiation effects
  • Coordination Complexes / chemical synthesis*
  • Coordination Complexes / pharmacology
  • Crystallography, X-Ray
  • Curcumin / chemistry*
  • DNA Cleavage / drug effects
  • DNA Cleavage / radiation effects
  • HeLa Cells
  • Humans
  • Inhibitory Concentration 50
  • Light
  • Microscopy, Confocal
  • Molecular Structure
  • Photosensitizing Agents / chemical synthesis*
  • Photosensitizing Agents / pharmacology
  • Spectrum Analysis
  • Vanadates / chemistry*

Substances

  • Antineoplastic Agents
  • Coordination Complexes
  • Photosensitizing Agents
  • oxovanadium IV
  • Vanadates
  • Curcumin