| First Author | Fukumoto K | Year | 2007 |
| Journal | Biochim Biophys Acta | Volume | 1772 |
| Issue | 3 | Pages | 298-306 |
| PubMed ID | 17204408 | Mgi Jnum | J:121392 |
| Mgi Id | MGI:3709946 | Doi | 10.1016/j.bbadis.2006.11.005 |
| Citation | Fukumoto K, et al. (2007) Effects of genetic backgrounds on hyperbilirubinemia in radixin-deficient mice due to different expression levels of Mrp3. Biochim Biophys Acta 1772(3):298-306 |
| abstractText | ERM (ezrin/radixin/moesin) proteins are organizers of apical actin cortical layer in general. We previously reported that the knockout of radixin resulted in Rdx(-/-) mice with displacement/loss of the canalicular transporter Mrp2, giving rise to Dubin-Johnson syndrome-like conjugated hyperbilirubinemia in the mixed genetic background (C57BL/6-129/Sv) (Kikuchi, et al. (2002) Nature Genetics 31, 320-325). However, when these mice were kept under mixed genetic background for years (late mixed backgrounds; LMB), the conjugated hyperbilirubinemia gradually became inconspicuous, while evidence of liver injury increased. We examined the effect of genetic background by backcrossing LMB Rdx(-/-) mice to C57BL/6 and 129/Sv wild type mice with the result that the Rdx(-/-) congenic mice regained hyperbilirubinemia with reduced hepatocellular damage. As revealed by immunofluorescence and western blots, the localization/expression of apical transporters, Mrp2, CD26, P-gps, and Bsep were not influenced by backcrossing, though those of a basolateral transporter, Mrp3, were strikingly increased by backcrossing. |
