Tumour levels of O6-alkylguanine-DNA-alkyltransferase and sensitivity to BCNU of human xenografts

G. Tagliabue, L. Citti, G. Massazza, G. Damia, R. Giavazzi, M. D'Incalci

Research output: Contribution to journalArticle

Abstract

Tumour levels of O6-alkylguanine-DNA-alkyltransferase (O6AT) and glutathione content (GSH) were correlated with 1,3-Bis (2-chloroethyl)-1-nitrosourea (BCNU) sensitivity in two human ovarian cancer xenografts (HOC8 and HOC18) and in two human glioblastoma xenografts (HG12 and HG15). HOC8 and HOC18 which were not responsive to BCNU treatment showed O6AT levels 14 and 23-fold higher than HG12 that was moderately sensitive to the same BCNU treatment. HG15 which was more sensitive to BCNU than HG12 showed significantly lower O6AT levels. GSH levels were similar in all tumor xenografts. These data further stress the importance of O6AT level as a relevant parameter for nitrosourea response in human tumours.

Original languageEnglish
Pages (from-to)2123-2125
Number of pages3
JournalAnticancer Research
Volume12
Issue number6 B
Publication statusPublished - 1992

Keywords

  • BCNU
  • Human xenografts
  • O-Alkylguanine-DNA-alkyltransferase

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

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