Quantitative trait locus analysis of ovarian cysts derived from rete ovarii in MRL/MpJ mice.
MRL/MpJ (MRL) is a model mouse for autoimmune diseases such as dermatitis, vasculitis, arthritis, and glomerulonephritis. In addition to these immune-associated disorders, we found that older MRL mice develop ovarian cysts originating from the rete ovarii, which is lined by ciliated or nonciliated epithelium and considered remnants of mesonephric tubules. Ovarian cysts, which are reported to have several sources, are associated with female infertility, but information regarding the genetic etiology of ovarian cysts originating from the rete ovarii is rare. In this study, to elucidate the genetic background of development of ovarian cysts, we performed quantitative trait locus (QTL) analysis using 120 microsatellite markers, which cover the whole genome of murine chromosomes, and 213 backcross progenies between female MRL and male C57BL/6N mice. The quantitative trait measured was the circumferences of rete ovarii or ovarian cysts. As a result, suggestive linkages were detected on Chrs 3, 4, 6, and 11, but significant linkages were located on Chr 14 by interval mapping. We thereby designated the 27.5-cM region of Chr 14 "MRL Rete Ovarian Cysts (mroc)." The peak regions of Chrs 4 and 14 in particular showed a close additive interaction (p < 0.00001). From these results we concluded that multiple loci on Chrs 3, 4, 6, 11, and 14 interact to result in development of ovarian cysts in MRL mice.
Lee
Shin-hyo
SH
Laboratory of Anatomy, Department of Biomedical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18-Nishi 9, Kita-ku, Sapporo, 060-0818, Japan. shinhyo@vetmed.hokudai.ac.jp
Ichii
Osamu
O
Otsuka
Saori
S
Hashimoto
Yoshiharu
Y
Kon
Yasuhiro
Y
D000818:Animals; D002874:Chromosome Mapping; D005260:Female; D008040:Genetic Linkage; D005819:Genetic Markers; D005838:Genotype; D051379:Mice; D019463:Mice, Inbred MRL lpr / Q000235:genetics*; D018895:Microsatellite Repeats / Q000235:genetics; D009929:Organ Size; D010048:Ovarian Cysts / Q000235:genetics* / Q000473:pathology; D010053:Ovary / Q000473:pathology*; D040641:Quantitative Trait Loci / Q000235:genetics*
D005819:Genetic Markers