4.7 Article

Photoactivatable platinum anticancer complex can generate tryptophan radicals

Journal

CHEMICAL COMMUNICATIONS
Volume 54, Issue 98, Pages 13845-13848

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c8cc06496b

Keywords

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Funding

  1. EU Marie Curie Initial Training Network FP7-PEOPLE-2012-ITN [316630 CAS-IDP]
  2. ERC [247450]
  3. EPSRC [EP/G006792, EP/F034210/1]
  4. Warwick Chancellor's Scholarship
  5. Warwick Spectroscopy RTP
  6. MRC [G0701062] Funding Source: UKRI

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l-Tryptophan (Trp), melatonin (MLT) and the Trp-peptide pentagastrin quenched the formation of azidyl radicals generated on irradiation of the anticancer complex trans,trans,trans-[Pt(pyridine)(2)(N-3)(2)(OH)(2)] with visible light, giving rise to C3-centred indole radicals which were characterized for Trp and MLT using an EPR spin-trap; indole, together with azidyl and hydroxyl radicals, have potential roles in a multitargeting mechanism of action against resistant cancers.

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