| Literature DB >> 18790090 |
Hironobu Nakane1, Seiichi Hirota, Philip J Brooks, Yusaku Nakabeppu, Yoshimichi Nakatsu, Yoshitake Nishimune, Akihiro Iino, Kiyoji Tanaka.
Abstract
We have reported that xeroderma pigmentosum group A (Xpa) gene-knockout mice [Xpa (-/-) mice] are deficient in nucleotide excision repair (NER) and highly sensitive to UV-induced skin carcinogenesis. Although xeroderma pigmentosum group A patients show growth retardation, immature sexual development, and neurological abnormalities as well as a high incidence of UV-induced skin tumors, Xpa (-/-) mice were physiologically and behaviorally normal. In the present study, we kept Xpa (-/-) mice for 2 years under specific pathogen-free (SPF) conditions and found that the testis diminished in an age-dependent manner, and degenerating seminiferous tubules and no spermatozoa were detected in the 24-month-old Xpa (-/-) mice. In addition, a higher incidence of spontaneous tumorigenesis was observed in the 24-month-old Xpa (-/-) mice compared to Xpa (+/+) controls. Xpa (-/-) mice provide a useful model for investigating the aging and internal tumor formation in XPA patients.Entities:
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Year: 2008 PMID: 18790090 PMCID: PMC4551480 DOI: 10.1016/j.dnarep.2008.08.003
Source DB: PubMed Journal: DNA Repair (Amst) ISSN: 1568-7856