Normal uracil-DNA glycosylase activity in Bloom's syndrome cells

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Cells from patients with Bloom's syndrome, a rare human disease with autosomal recessive mode of inheritance, exhibit cytological abnormalities involving DNA metabolism. Bloom's syndrome is characterized by a greatly increased cancer frequency which may reflect a specific defect in DNA repair and replication. Evidence has recently been presented of the existence in Bloom's syndrome of an abnormality of the DNA ligase involved in semiconservative DNA replication. Another abnormality, in the excision-repair pathway of Bloom's syndrome cells, is reportedly due to an aberrant immunological reactivity of the DNA-repair enzyme uracil-DNA glycosylase. In this investigation we show, however, that the catalytic activity of uracil-DNA glycosylase appears to be normal in Bloom's syndrome lymphoblastoid cells. © 1989.




Vilpo, J. A., & Vilpo, L. M. (1989). Normal uracil-DNA glycosylase activity in Bloom’s syndrome cells. Mutation Research - Fundamental and Molecular Mechanisms of Mutagenesis, 210(1), 59–62.

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