Structural specificity of polyamines and polyamine analogues in the protection of DNA from strand breaks induced by reactive oxygen species

Hyo Chol Ha, James D. Yager, Patrick A. Woster, Robert A. Casero

Research output: Contribution to journalArticle


Reactive oxygen species are known to induce strand breaks and/or base modifications in DNA. DNA strand breaks are associated with many pathologies and programmed cell death. We have examined the ability of the polyamines and their analogues to protect φX-174 plasmid DNA from strand breakage induced by a oxygen-radical generating system. Spermine and several unsymmetrically substituted polyamine analogues reduced the amount of strand breakage at a physiologically relevant concentration of 1 mM. However, putrescine, spermidine, N1-acetylspermine, N1-acetylspermidine and symmetrically alkylated polyamine analogues were not able to reduce strand breakage at the same concentration. Thus, the unsymmetrically alkylated polyamine analogues and natural spermine can protect DNA against strand breakage induced by Cu(II)/H2O2 generated ROS similar to other more classical antioxidants.

Original languageEnglish (US)
Pages (from-to)298-303
Number of pages6
JournalBiochemical and Biophysical Research Communications
Issue number1
StatePublished - Mar 6 1998


ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

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