Hetero-oligomerization between the TNF receptor superfamily members CD40, Fas and TRAILR2 modulate CD40 signalling.

Détails

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Etat: Serval
Version: de l'auteur
ID Serval
serval:BIB_C6146EC93FF4
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Hetero-oligomerization between the TNF receptor superfamily members CD40, Fas and TRAILR2 modulate CD40 signalling.
Périodique
Cell death & disease
Auteur(s)
Smulski C.R., Decossas M., Chekkat N., Beyrath J., Willen L., Guichard G., Lorenzetti R., Rizzi M., Eibel H., Schneider P., Fournel S.
ISSN
2041-4889 (Electronic)
Statut éditorial
Publié
Date de publication
09/02/2017
Peer-reviewed
Oui
Volume
8
Numéro
2
Pages
e2601
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: epublish
Résumé
TNF receptor superfamily members (TNFRSF) such as CD40, Fas and TRAIL receptor 2 (TRAILR2) participate to the adaptive immune response by eliciting survival, proliferation, differentiation and/or cell death signals. The balance between these signals determines the fate of the immune response. It was previously reported that these receptors are able to self-assemble in the absence of ligand through their extracellular regions. However, the role of this oligomerization is not well understood, and none of the proposed hypotheses take into account potential hetero-association of receptors. Using CD40 as bait in a flow cytometry Förster resonance energy transfer assay, TNFRSF members with known functions in B cells were probed for interactions. Both Fas and TRAILR2 associated with CD40. Immunoprecipitation experiments confirmed the interaction of CD40 with Fas at the endogenous levels in a BJAB B-cell lymphoma cell line deficient for TRAILR2. TRAILR2-expressing BJAB cells displayed a robust CD40-TRAILR2 interaction at the expense of the CD40-Fas interaction. The same results were obtained by proximity ligation assay, using TRAILR2-positive and -negative BJAB cells and primary human B cells. Expression of the extracellular domains of Fas or TRAILR2 with a glycolipid membrane anchor specifically reduced the intrinsic signalling pathway of CD40 in 293T cells. Conversely, BJAB cells lacking endogenous Fas or TRAILR2 showed an increased NF-κB response to CD40L. Finally, upregulation of TRAILR2 in primary human B cells correlated with reduced NF-κB activation and reduced proliferation in response to CD40L. Altogether, these data reveal that selective interactions between different TNFRSF members may modulate ligand-induced responses upstream signalling events.

Mots-clé
Antigens, CD40/metabolism, Antigens, CD95/metabolism, B-Lymphocytes/metabolism, CD40 Ligand/metabolism, Cell Line, Gene Expression Regulation/physiology, HEK293 Cells, Humans, NF-kappa B/metabolism, Polymerization, Protein Interaction Domains and Motifs/physiology, Receptors, TNF-Related Apoptosis-Inducing Ligand/metabolism, Receptors, Tumor Necrosis Factor/metabolism, Signal Transduction/physiology, Tumor Cells, Cultured, Up-Regulation/physiology
Pubmed
Web of science
Open Access
Oui
Création de la notice
21/02/2017 20:18
Dernière modification de la notice
09/05/2019 1:01
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