Auromomycin-induced dna damage and repair in human leukemic lymphoblasts (ccrf-cem cells)

T. S. Anantha Samy, Larry Wellham, Awtar Krishan

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

An alkaline elution procedure was used to study the nature of DNA damage induced by auromomycin, an antitumor protein, in human leukemic lymphoblasts (CCRF-CEM cells). The filter elution of drug-treated cells at pH 12.2 and 9.6 showed induction of both single and double strand DNA breaks. The DNA strand scission activities were linear in relation to drug concentration. The frequency of single strand breaks was higher than that of the double strand breaks. Protein-associated DNA single strand breaks were also detected in alkaline elution of drug-treated cells when a proteinase K digestion step was included in the assay protocol. The auromomycin-induced single strand breaks were repaired to almost completion within 8 h of postincubation of DNA-damaged cells whereas the repair of double strand breaks was not detected.

Original languageEnglish (US)
Pages (from-to)507-512
Number of pages6
JournalCancer Research
Volume46
Issue number2
StatePublished - Feb 1 1986

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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    Anantha Samy, T. S., Wellham, L., & Krishan, A. (1986). Auromomycin-induced dna damage and repair in human leukemic lymphoblasts (ccrf-cem cells). Cancer Research, 46(2), 507-512.