Abstract:
:Studies of spontaneous mutations in mice have provided valuable disease models and important insights into the mechanisms of human disease. Ruffled (rul) is a new autosomal recessive mutation causing abnormal hair coat in mice. The rul allele arose spontaneously in the RB156Bnr/EiJ inbred mouse strain. In addition to an abnormal coat texture, we found diffuse epidermal blistering, abnormal electrocardiograms (ECGs), and ventricular fibrosis in mutant animals. Using high-throughput sequencing (HTS) we found a frameshift mutation at 38,288,978bp of chromosome 13 in the desmoplakin gene (Dsp). The predicted mutant protein is truncated at the c-terminus and missing the majority of the plakin repeat domain. The phenotypes found in Dsp(rul) mice closely model a rare human disorder, Carvajal-Huerta syndrome. Carvajal-Huerta syndrome (CHS) is a rare cardiocutaneous disorder that presents in humans with wooly hair, palmoplantar keratoderma and ventricular cardiomyopathy. CHS results from an autosomal recessive mutation on the 3' end of desmoplakin (DSP) truncating the full length protein. The Dsp(rul) mouse provides a new model to investigate the pathogenesis of CHS, as well as the underlying basic biology of the adhesion molecules coded by the desmosomal genes.
journal_name
Exp Mol Patholjournal_title
Experimental and molecular pathologyauthors
Herbert Pratt C,Potter CS,Fairfield H,Reinholdt LG,Bergstrom DE,Harris BS,Greenstein I,Dadras SS,Liang BT,Schofield PN,Sundberg JPdoi
10.1016/j.yexmp.2015.01.015subject
Has Abstractpub_date
2015-04-01 00:00:00pages
164-72issue
2eissn
0014-4800issn
1096-0945pii
S0014-4800(15)00018-0journal_volume
98pub_type
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