Keratinocyte-specific deletion of SHARPIN induces atopic dermatitis-like inflammation in mice

John P. Sundberg, C. Herbert Pratt, Leslie P. Goodwin, Kathleen A. Silva, Victoria E. Kennedy, Christopher S. Potter, Anisa Dunham, Beth A. Sundberg, Harm HogenEsch

Research output: Contribution to journalArticle

Abstract

Spontaneous mutations in the SHANK-associated RH domain interacting protein (Sharpin) resulted in a severe autoinflammatory type of chronic proliferative dermatitis, inflammation in other organs, and lymphoid organ defects. To determine whether cell-type restricted loss of Sharpin causes similar lesions, a conditional null mutant was created. Ubiquitously expressing cre-recombinase recapitulated the phenotype seen in spontaneous mutant mice. Limiting expression to keratinocytes (using a Krt14-cre) induced a chronic eosinophilic dermatitis, but no inflammation in other organs or lymphoid organ defects. The dermatitis was associated with a markedly increased concentration of serum IgE and IL18. Crosses with S100a4-cre resulted in milder skin lesions and moderate to severe arthritis. This conditional null mutant will enable more detailed studies on the role of SHARPIN in regulating NFkB and inflammation, while the Krt14-Sharpin-/- provides a new model to study atopic dermatitis.

Original languageEnglish (US)
Article numbere0235295
JournalPloS one
Volume15
Issue number7 July
DOIs
StatePublished - Jul 2020

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • General

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    Sundberg, J. P., Herbert Pratt, C., Goodwin, L. P., Silva, K. A., Kennedy, V. E., Potter, C. S., Dunham, A., Sundberg, B. A., & HogenEsch, H. (2020). Keratinocyte-specific deletion of SHARPIN induces atopic dermatitis-like inflammation in mice. PloS one, 15(7 July), [e0235295]. https://doi.org/10.1371/journal.pone.0235295