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Synthetic polysulfane derivatives induce cell cycle arrest and apoptotic cell death in human hematopoietic cancer cells

Authors
  • Czepukojc, Brigitte
  • Baltes, Anne-Kathrin
  • Claudia Cerella
  • Kelkel, Mareike
  • Viswanathan, Uma M.
  • Salm, Franz
  • Burkholz, Torsten
  • Schneider, Carolin
  • Dicato, Mario
  • Montenarh, Mathias
  • Jacob, Claus
  • Marc Diederich
Type
Published Article
Journal
Food and Chemical Toxicology
Publisher
Elsevier
Publication Date
Feb 24, 2014
Volume
64
Pages
257–257
Identifiers
DOI: 10.1016/j.fct.2013.10.020
Source
LBMCC
Keywords
License
Green

Abstract

Natural polysulfanes including diallyltrisulfide (DATS) and diallyltetrasulfide (DATTS) from garlic possess antimicrobial, chemopreventive and anticancer properties. However these compounds exhibit chemical instability and reduced solubility, which prevents their potential clinical applicability. We synthetized six DATS and DATTS derivatives, based on the polysulfane motif, expected to exhibit improved physical and chemical properties and verified their biological activity on human leukemia cells. We identified four novel cytotoxic compounds (IC50 values: compound 1, 24.96 ± 12.37; compound 2, 22.82 ± 4.20; compound 3, 3.86 ± 1.64 and compound 5, 40.62 ± 10.07, compared to DATTS: IC50: 9.33 ± 3.86). These polysulfanes possess excellent differential toxicity, as they did not affect proliferating mononuclear blood cells from healthy donors. We further demonstrated ability of active compounds to induce apoptosis in leukemia cells by analysis of nuclear fragmentation and of cleavage of effector and executioner caspases. Apoptosis was preceded by accumulation of cells in G2/M phase with a pro-metaphase-like nuclear pattern as well as microtubular alterations. Prolonged and persistent arrest of cancer cells in early mitosis by the benzyl derivative identifies this compound as the most stable and effective one for further mechanistic and in vivo studies

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