Nucleotide excision repair of melphalan monoadducts

David F. Grant, Tadayoshi Bessho, Joyce T. Reardon

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

The nucleotide-excision repair (NER) system removes bulky DNA adducts and is thought to be involved in resistance to chemotherapeutic drugs, which act by damaging DNA. In this study, we have investigated the ability of the NER system to recognize and excise melphalan monoadducts from a 140-mer DNA substrate. We show that rodent and human cell-free extracts (CFEs) excise 26- 29-nt-long oligomers from a synthetic 140-mer containing centrally located melphalan adducts. CFEs from cell lines with mutations in xeroderma pigmentosum group F or G genes did not excise these alkylated oligomers; however, mixing the two CFEs restored excision activity to the level found with wild-type CFEs. These results demonstrate the ability of the NER system to excise melphalan monoadducts, and are consistent with the hypothesis that NER may be involved in resistance to melphalan chemotherapy.

Original languageEnglish (US)
Pages (from-to)5196-5200
Number of pages5
JournalCancer Research
Volume58
Issue number22
StatePublished - Nov 15 1998

Fingerprint

Melphalan
Cell Extracts
DNA Repair
Xeroderma Pigmentosum
DNA Adducts
DNA
Rodentia
Drug Therapy
Cell Line
Mutation
Pharmaceutical Preparations
Genes

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

Cite this

Grant, D. F., Bessho, T., & Reardon, J. T. (1998). Nucleotide excision repair of melphalan monoadducts. Cancer Research, 58(22), 5196-5200.

Nucleotide excision repair of melphalan monoadducts. / Grant, David F.; Bessho, Tadayoshi; Reardon, Joyce T.

In: Cancer Research, Vol. 58, No. 22, 15.11.1998, p. 5196-5200.

Research output: Contribution to journalArticle

Grant, DF, Bessho, T & Reardon, JT 1998, 'Nucleotide excision repair of melphalan monoadducts', Cancer Research, vol. 58, no. 22, pp. 5196-5200.
Grant DF, Bessho T, Reardon JT. Nucleotide excision repair of melphalan monoadducts. Cancer Research. 1998 Nov 15;58(22):5196-5200.
Grant, David F. ; Bessho, Tadayoshi ; Reardon, Joyce T. / Nucleotide excision repair of melphalan monoadducts. In: Cancer Research. 1998 ; Vol. 58, No. 22. pp. 5196-5200.
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