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PMID:7628020

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Citation

de Wind, N, Dekker, M, Berns, A, Radman, M and te Riele, H (1995) Inactivation of the mouse Msh2 gene results in mismatch repair deficiency, methylation tolerance, hyperrecombination, and predisposition to cancer. Cell 82:321-30

Abstract

To investigate the role of the presumed DNA mismatch repair (MMR) gene Msh2 in genome stability and tumorigenesis, we have generated cells and mice that are deficient for the gene. Msh2-deficient cells have lost mismatch binding and have acquired microsatellite instability, a mutator phenotype, and tolerance to methylating agents. Moreover, in these cells, homologous recombination has lost dependence on complete identity between interacting DNA sequences, suggesting that Msh2 is involved in safeguarding the genome from promiscuous recombination. Msh2-deficient mice display no major abnormalities, but a significant fraction develops lymphomas at an early age. Thus, Msh2 is involved in MMR, controlling several aspects of genome stability; loss of MMR-controlled genome stability predisposes to cancer.

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PubMed

Keywords

Animals; Base Composition; Base Sequence; Chimera; DNA/genetics; DNA/metabolism; DNA Repair/genetics; DNA-Binding Proteins/genetics; Fungal Proteins; Genetic Predisposition to Disease; Lymphoma/genetics; Methylation; Methylnitronitrosoguanidine/pharmacology; Mice; Mice, Mutant Strains; Molecular Sequence Data; MutS Homolog 2 Protein; Mutagenesis; Oligodeoxyribonucleotides; Polymerase Chain Reaction; Recombination, Genetic; Stem Cells/cytology; Stem Cells/physiology

Significance

Annotations

Gene product Qualifier GO ID GO term name Evidence Code with/from Aspect Notes Status


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References

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