Abstract:
:The Capn5 gene was inactivated by homologous recombination in ES cells that subsequently colonized the germ line of mice. The targeted mutation integrated a lacZ expression cassette into the Capn5 gene, allowing the expression of Capn5 mRNA to be examined in detail in heterozygous animals. Expression was observed in embryonic and newborn thymuses, in various epithelial tissues, and in tissues of the central nervous system. In the thymus, Capn5 was expressed mainly in relatively immature CD25(+) embryonic thymocytes. Despite the numerous expression sites of Capn5, the majority of Capn5-null mice were viable and fertile and appeared healthy. Histopathological analysis did not reveal any differences between Capn5-null and wild-type mice. There were no defects in the major T- or B-cell populations in the thymus, spleen, bone marrow, or peritoneum, nor did apoptosis appear abnormal in Capn5-null T cells. There was no evidence for the development of autoimmune disease in Capn5-null animals. However, a small proportion of homozygous null offspring from heterozygous matings were runted and most often did not survive to adulthood.
journal_name
Mol Cell Bioljournal_title
Molecular and cellular biologyauthors
Franz T,Winckler L,Boehm T,Dear TNdoi
10.1128/mcb.24.4.1649-1654.2004subject
Has Abstractpub_date
2004-02-01 00:00:00pages
1649-54issue
4eissn
0270-7306issn
1098-5549journal_volume
24pub_type
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