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Howes, A.* ; O'Sullivan, P.A.* ; Breyer, F.* ; Ghose, A.* ; Cao, L.* ; Krappmann, D. ; Bowcock, A.M.* ; Ley, S.C.*

Psoriasis mutations disrupt CARD14 autoinhibition promoting BCL10-MALT1-dependent NF-κB activation.

Biochem. J. 473, 1759-1768 (2016)
Verlagsversion Postprint DOI PMC
Open Access Gold
Inherited and de novo mutations in the CARD14 gene promote the development of psoriasis, an inflammatory disease of the skin. CARD14 is a member of the CARMA protein family that includes the structurally related CARD11 adaptor that mediates NF-κB activation by antigen receptors. We investigated the mechanism by which CARD14 mutation in psoriasis activates NF-κB. In contrast to wild type CARD14, CARD14(E138A)and CARD14(G117S)psoriasis mutants interacted constitutively with BCL10 and MALT1, and triggered BCL10 and MALT1 dependent activation of NF-κB in keratinocytes. These alterations disrupted the inhibitory effect of the CARD14 linker region on NF-κB activation by facilitating BCL10 binding. Therefore, psoriasis mutations activated CARD14 by a mechanism analogous to oncogenic CARD11 mutations in non-Hodgkin B cell lymphomas. CARD14(E138A)also stimulated MALT1 paracaspase activity and activated both ERK1/2 and p38α MAP kinases. Inhibition of MALT1 with mepazine reduced CARD14(E138A)-induced expression of specific psoriasis-associated transcripts in keratinocytes. Our results establish the mechanism whereby gain-of-function CARD14 variants, which induce psoriatic disease in affected individuals, activate pro-inflammatory signaling.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Card14 ; Malt1 ; Keratinocytes ; Nuclear Factor Kappab ; Psoriasis; Responsive Inhibitory Domain; Innate Immunity; Arthritis; Malt1; Phosphorylation; Identification; Regnase-1; Proteins; Cleavage; Bcl10
Sprache englisch
Veröffentlichungsjahr 2016
HGF-Berichtsjahr 2016
ISSN (print) / ISBN 0264-6021
e-ISSN 1470-8728
Quellenangaben Band: 473, Heft: 12, Seiten: 1759-1768 Artikelnummer: , Supplement: ,
Verlag Portland Press
Verlagsort London
Begutachtungsstatus Peer reviewed
Institut(e) Research Unit Signaling and Translation (SAT)
POF Topic(s) 30203 - Molecular Targets and Therapies
Forschungsfeld(er) Enabling and Novel Technologies
PSP-Element(e) G-509800-002
Scopus ID 84975113409
PubMed ID 27071417
Erfassungsdatum 2016-04-18