Fiche publication
Date publication
juillet 2020
Journal
Cancer immunology research
Auteurs
Membres identifiés du Cancéropôle Est :
Dr OREND Gertraud
,
Dr CARAPITO Christine
,
Dr CARAPITO Raphaël
,
Dr DUMORTIER Hélène
,
Dr MUELLER Christopher
Tous les auteurs :
Spenlé C, Loustau T, Murdamoothoo D, Erne W, Beghelli-de la Forest Divonne S, Veber R, Petti L, Bourdely P, Mörgelin M, Brauchle EM, Crémel G, Randrianarisoa V, Camara A, Rekima S, Schaub S, Nouhen K, Imhof T, Hansen U, Paul N, Carapito R, Pythoud N, Hirschler A, Carapito C, Dumortier H, Mueller CG, Koch M, Schenke-Layland K, Kon S, Sudaka A, Anjuere F, Van Obberghen-Schilling E, Orend G
Lien Pubmed
Résumé
Inherent immune suppression represents a major challenge in the treatment of human cancer. The extracellular matrix molecule tenascin-C promotes cancer by multiple mechanisms, yet the roles of tenascin-C in tumor immunity are incompletely understood. Using a 4NQO-induced oral squamous cell carcinoma (OSCC) model with abundant and absent tenascin-C, we demonstrated that tenascin-C enforced an immune suppressive lymphoid stroma via CCL21/CCR7 signaling, leading to increased metastatic tumors. Through TLR4, tenascin-C increased expression of CCR7 in CD11c+ myeloid cells. By inducing CCL21 in lymphatic endothelial cells via integrin α9β1 and binding to CCL21, tenascin-C immobilized CD11c+ cells in the stroma. Inversion of the lymph node-to-tumor CCL21 gradient, recruitment of T regulatory cells, high expression of anti-inflammatory cytokines and matrisomal components were hallmarks of the tenascin-C-instructed lymphoid stroma. Ablation of tenascin-C or CCR7 blockade inhibited the lymphoid immune suppressive stromal properties, reducing tumor growth, progression and metastasis. Thus, targeting CCR7 could be relevant in human head and neck tumors as high tenascin-C expression and an immune suppressive stroma correlate to poor patient survival.
Référence
Cancer Immunol Res. 2020 Jul 14;:
