The Werner syndrome protein has separable recombination and survival functions☆

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The Werner syndrome protein has separable recombination and survival functions.

The Werner syndrome (WS) protein WRN is unique in possessing a 3' to 5' exonuclease activity in addition to the 3' to 5' helicase activity characteristic of other RecQ proteins. In order to determine in vivo functions of the WRN catalytic activities and their roles in Werner syndrome pathogenesis, we quantified cell survival and homologous recombination after DNA damage in cells expressing WRN ...

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Loss of Werner syndrome protein function promotes aberrant mitotic recombination.

The chromosome 8p11-12 Werner syndrome (WRN ) locus encodes a RecQ helicase protein of unknown function that possesses both 3' --> 5' helicase and 3' --> 5' exonuclease activities. We show that WRN cell lines display a marked reduction in cell proliferation following mitotic recombination, and generate few viable gene conversion-type recombinants. These findings indicate that WRN plays a role i...

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Homologous recombination resolution defect in werner syndrome.

Werner syndrome (WRN) is an uncommon autosomal recessive disease whose phenotype includes features of premature aging, genetic instability, and an elevated risk of cancer. We used three different experimental strategies to show that WRN cellular phenotypes of limited cell division potential, DNA damage hypersensitivity, and defective homologous recombination (HR) are interrelated. WRN cell surv...

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The Werner syndrome protein functions in repair of Cr(VI)-induced replication-associated DNA damage.

Werner syndrome is a premature aging disorder characterized by cancer predisposition that is caused by loss of the Werner syndrome protein (WRN) helicase/exonuclease DNA repair protein. Hexavalent chromium is an environmental carcinogen and genotoxicant that is associated with respiratory cancers and induces several forms of DNA damage, including lesions that interfere with DNA replication. Bas...

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Werner Syndrome

Werner Syndrome (WS) is an autosomal recessive disease that leads to the premature manifestation of clinical symptoms associated with normal aging. Clinical symptoms include: short stature, graying/loss of hair, osteoporosis, cataracts, atherosclerosis, type II diabetes, hypogonadism, skin ulcers, reduced fertility, and high incidence of malignant neoplasms. They appear in one’s 20’s and 30’s, ...

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ژورنال

عنوان ژورنال: DNA Repair

سال: 2004

ISSN: 1568-7864

DOI: 10.1016/j.dnarep.2004.01.002