4.6 Article

Enhanced cytotoxic activity of bile acid cisplatin derivatives by conjugation with gold nanoparticles

Journal

JOURNAL OF INORGANIC BIOCHEMISTRY
Volume 131, Issue -, Pages 8-11

Publisher

ELSEVIER SCIENCE INC
DOI: 10.1016/j.jinorgbio.2013.10.021

Keywords

Bile-acid cisplatin derivatives; Gold nanoparticles; Cytotoxic activity; Drug delivery

Funding

  1. Fondo de Investigacion Sanitaria (FIS) of the Instituto de Salud Carlos III (ISCIII), Madrid, Spain (ISCIII) [FIS PI1102114]
  2. Junta Castilla-Leon [SA198A12-2]
  3. Junta de Castilla y Leon [Orden EDU/1486/2008]
  4. Fundacion Samuel Solorzano Barruso

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This article explores the potential cytotoxic activity of bile-acid cisplatin derivatives like bisursodeoxycholate (ethylenediamine)platinum(II), PtU2, when conjugated with gold nanoparticles, being a promising alternative to cisplatin in the treatment of cancer due to their lower toxicity. For our purpose we analyzed the intracellular delivery ability of these compounds after conjugation with 20-nm gold nanoparticles (PtU2-AuNPs) in the MG63 (osteosarcoma) cell line. Same platinum uptake after incubation with PtU2 and PtU2-AuNPs-derivatives is associated with a higher cytotoxic activity in case of the platinum-gold nanoparticle conjugate, the overall IC50 of PtU2 being reduced more than 10 fold for these new conjugates. When conjugated with gold nanoparticles, this bile-acid derivative is more efficient than the platinum compound alone in terms of their cytotoxic activity. (C) 2013 Elsevier Inc. All rights reserved.

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