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Title: Perturbed desmosomal cadherin expression in grainy head-like 1-null mice.
Authors: Sinclair, Rodney
Other Authors: Wilanowski, T.
Caddy, J.
Ting, S. B.
Hislop, N. R.
Cerruti, L.
Auden, A.
Zhao, L. L.
Asquith, S.
Ellis, S.
Cunningham, J. M.
Jane, S. M.
Keywords: Cell Differentiation
Desmoglein 1
Desmosomal Cadherins
Antagonists and Inhibitors
Gene Expression Regulation
Hair Follicle
Repressor Proteins
Animal Studies
Hair Loss
GRHL1 Protein
Department of Dermatology, Epworth Hospital, Richmond, Victoria, Australia
Issue Date: Mar-2008
Publisher: EMBO Press
Citation: EMBO J. 2008 Mar 19;27(6):886-97.
Abstract: In Drosophila, the grainy head (grh) gene plays a range of key developmental roles through the regulation of members of the cadherin gene family. We now report that mice lacking the grh homologue grainy head-like 1 (Grhl1) exhibit hair and skin phenotypes consistent with a reduction in expression of the genes encoding the desmosomal cadherin, desmoglein 1 (Dsg1). Grhl1-null mice show an initial delay in coat growth, and older mice exhibit hair loss as a result of poor anchoring of the hair shaft in the follicle. The mice also develop palmoplantar keratoderma, analogous to humans with DSG1 mutations. Sequence analysis, DNA binding, and chromatin immunoprecipitation experiments demonstrate that the human and mouse Dsg1 promoters are direct targets of GRHL1. Ultrastructural analysis reveals reduced numbers of abnormal desmosomes in the interfollicular epidermis. These findings establish GRHL1 as an important regulator of the Dsg1 genes in the context of hair anchorage and epidermal differentiation, and suggest that cadherin family genes are key targets of the grainy head-like genes across 700 million years of evolution.
DOI: 10.1038/emboj.2008.24
PubMed URL:
ISSN: 1460-2075
Journal Title: The EMBO Journal
Type: Journal Article
Affiliated Organisations: Rotary Bone Marrow Research Laboratories, Melbourne Health Research Directorate, Royal Melbourne Hospital, Parkville, Victoria, Australia.
Trescowthick Research Laboratories, Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia.
Department of Dermatology, St Vincent's Hospital, Fitzroy, Victoria, Australia.
Department of Pediatrics and Institute of Molecular Pediatric Sciences, University of Chicago, Chicago, IL, USA.
Department of Medicine, University of Melbourne, Parkville, Victoria, Australia.
Type of Clinical Study or Trial: Controlled Clinical Trial
Appears in Collections:Dermatology

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