title: Articular chondromatosis and chrondroid metaplasia in transgenic TAg mice.
abstract: The C3(1)/SV40 T antigen transgenic mouse model for which rapid mammary and prostate tumor development has been documented uses the FVB/N mouse as a background strain. In this study, where the background strain used was the C57BL/6J mouse, neither mammary nor prostate tumors developed over periods of up to 40 weeks. However, a disturbance of hyaline cartilage in joints was observed similar to that found in synovial chondromatosis in humans. In addition, cartilage thickening in the external ears and cartilaginous metaplasia of the ascending aorta also occurred. This suggests that rearrangement of the transgene occurred in breeding on the C57BL background, thus modifying its expression. It raises the possibility that the genetic changes induced by the SV40 T antigen transforming sequence are important in cartilage homeostasis.
authors.affiliation: Department of Oncology, University of Leicester, Leicester LE2 7LX, United Kingdom.
authors.forename: Richard D
authors.initials: RD
authors.lastname: Verschoyle
authors.forename: Richard
authors.initials: R
authors.lastname: Edwards
authors.forename: Barbara
authors.initials: B
authors.lastname: Nolan
authors.forename: Peter
authors.initials: P
authors.lastname: Greaves
mesh_terms: D000818:Animals; D001011:Aorta / Q000473:pathology*; D002358:Cartilage, Articular / Q000473:pathology*; D015838:Chondromatosis, Synovial / Q000235:genetics / Q000473:pathology*; D004195:Disease Models, Animal; D004431:Ear, External / Q000473:pathology*; D005260:Female; D020022:Genetic Predisposition to Disease; D008297:Male; D015674:Mammary Neoplasms, Animal / Q000235:genetics / Q000473:pathology; D008679:Metaplasia / Q000473:pathology; D051379:Mice; D008810:Mice, Inbred C57BL; D008822:Mice, Transgenic; D011471:Prostatic Neoplasms / Q000235:genetics / Q000473:pathology