A mouse model for osseous heteroplasia.

ABSTRACT: GNAS/Gnas encodes G(s)α that is mainly biallelically expressed but shows imprinted expression in some tissues. In Albright Hereditary Osteodystrophy (AHO) heterozygous loss of function mutations of GNAS can result in ectopic ossification that tends to be superficial and attributable to haploinsufficiency of biallelically expressed G(s)α. Oed-Sml is a point missense mutation in exon 6 of the orthologous mouse locus Gnas. We report here both the late onset ossification and occurrence of benign cutaneous fibroepithelial polyps in Oed-Sml. These phenotypes are seen on both maternal and paternal inheritance of the mutant allele and are therefore due to an effect on biallelically expressed G(s)α. The ossification is confined to subcutaneous tissues and so resembles the ossification observed with

SUBMITTER: Cheeseman MT 

PROVIDER: S-EPMC3526487 | biostudies-literature | 2012

REPOSITORIES: biostudies-literature