A new Os,Rh bimetallic with O2 independent DNA cleavage and DNA photobinding with red therapeutic light excitation

Chem Commun (Camb). 2011 Sep 21;47(35):9786-8. doi: 10.1039/c1cc11562f. Epub 2011 Jun 13.

Abstract

Many Ru and Os systems display photoactive (3)MLCT states. Systems activated by therapeutic window light in the absence of O(2) remain elusive. [(bpy)(2)Os(dpp)RhCl(2)(phen)](3+) photobinds and photocleaves DNA under red light in an oxygen independent manner, due to molecular design involving one Os chromophore coupled to a photoactive cis-Rh(III)Cl(2) moiety.

MeSH terms

  • Color
  • DNA / chemistry*
  • DNA / metabolism
  • DNA Cleavage / drug effects
  • DNA Cleavage / radiation effects*
  • Electron Transport
  • Light*
  • Organometallic Compounds / chemistry*
  • Organometallic Compounds / metabolism
  • Organometallic Compounds / pharmacology*
  • Osmium / chemistry
  • Oxygen / chemistry
  • Photochemical Processes / drug effects
  • Photochemical Processes / radiation effects*
  • Photosensitizing Agents / chemistry
  • Photosensitizing Agents / metabolism
  • Photosensitizing Agents / pharmacology
  • Rhodium / chemistry

Substances

  • Organometallic Compounds
  • Photosensitizing Agents
  • Osmium
  • DNA
  • Rhodium
  • Oxygen