DNA strand scission by bleomycin group antibiotics

Hiroshi Sugiyama, Guy M. Ehrenfeld, Joshua B. Shipley, Robert E. Kilkuskie, Li Ho Chang, Sidney M. Hecht

Research output: Contribution to journalArticlepeer-review

90 Scopus citations


Certain properties of the bleomycin analogs deglycobleomycin A2 and decarbamoylbleomycin A2 have been characterized. In common with bleomycin A2, both deglycobleomycin A2 and decarbamoylbleomycin A2 were found to mediate DNA degradation in the presence of Fe(II)+O2. Both analogs were found to have essentially the same sequence selectivity for DNA strand scission as bleomycin A2 when a 5 ' ‘-[23P]-end-labeled linear duplex DNA derived from SV40 DNA was employed as a substrate. Product analysis for the three analogs was carried out by assay for malondialdehyde (precursors) after digestion of calf thymus DNA, and also by hplc analysis of the digestion products formed from the dodecanucleotide d(CGCTTTAAAGCG). All three Fe(II)*bleomycin A2 analogs produced the same products, albeit not in the same relative amounts.

Original languageEnglish (US)
Pages (from-to)869-877
Number of pages9
JournalJournal of Natural Products
Issue number6
StatePublished - Nov 1985
Externally publishedYes

ASJC Scopus subject areas

  • Analytical Chemistry
  • Molecular Medicine
  • Pharmacology
  • Pharmaceutical Science
  • Drug Discovery
  • Complementary and alternative medicine
  • Organic Chemistry


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