Assignment of the XRCC2 human DNA repair gene to chromosome 7q36 by complementation analysis

Nigel J. Jones, Ying Zhao, Michael J. Siciliano, Larry H. Thompson

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The V79 hamster cell line irs1 is a repair-deficient mutant hypersensitive to radiation and DNA-reactive chemical agents. Somatic cell hybrids were formed by fusing irs1 cells with human lymphocytes and selecting for complementation in medium containing concentrations of mitomycin C (MMC) that are toxic to irs1. Thirty-eight MMC-resistant hybrids showed extensive segregation of human chromosomes, with 35 of them retaining human chromosome 7, as indicated by molecular marker and cytogenetic analyses. Inter-Alu-PCR products from the DNA of hybrids, when used as fluorescence in situ hybridization probe onto normal human metaphases, indicated that one resistant hybrid was monochromosomal for chromosome 7 and that the three resistant hybrids shown to be negative for chromosome 7 markers have retained portions of chromosome 7, with region 7q36 being the smallest common region. MMC-sensitive subclones of a resistant hybrid lost human chromosome 7. Therefore, the gene complementing the repair defect, XRCC2 (X-ray repair cross complementing), is assigned to human chromosome 7q36.

Original languageEnglish (US)
Pages (from-to)619-622
Number of pages4
JournalGenomics
Volume26
Issue number3
DOIs
StatePublished - Apr 10 1995
Externally publishedYes

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Chromosomes, Human, Pair 7
DNA Repair
Human Chromosomes
Chromosomes
Mitomycin
Genes
Hybrid Cells
Poisons
Cytogenetic Analysis
DNA
Metaphase
Fluorescence In Situ Hybridization
Genetic Markers
Cricetinae
X-Rays
Lymphocytes
Radiation
Cell Line
Polymerase Chain Reaction

ASJC Scopus subject areas

  • Genetics

Cite this

Assignment of the XRCC2 human DNA repair gene to chromosome 7q36 by complementation analysis. / Jones, Nigel J.; Zhao, Ying; Siciliano, Michael J.; Thompson, Larry H.

In: Genomics, Vol. 26, No. 3, 10.04.1995, p. 619-622.

Research output: Contribution to journalArticle

Jones, Nigel J. ; Zhao, Ying ; Siciliano, Michael J. ; Thompson, Larry H. / Assignment of the XRCC2 human DNA repair gene to chromosome 7q36 by complementation analysis. In: Genomics. 1995 ; Vol. 26, No. 3. pp. 619-622.
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