Fiche publication
Date publication
mars 2017
Journal
Cancer research
Auteurs
Membres identifiés du Cancéropôle Est :
Pr CALLANAN Mary
Tous les auteurs :
Manfroi B, McKee T, Mayol JF, Tabruyn S, Moret S, Villiers C, Righini C, Dyer M, Callanan M, Schneider P, Tzankov A, Matthes T, Sturm N, Huard B
Lien Pubmed
Résumé
Tumor-infiltrating neutrophils have been implicated in malignant development and progression, but mechanisms are ill defined. Neutrophils produce a proliferation-inducing ligand APRIL/TNFSF13, a factor that promotes development of tumors from diverse origins, including diffuse large B-cell lymphoma (DLBCL). High APRIL expression in DLBCL correlates with reduced patient survival, but the pathway(s) dictating APRIL expression are not known. Here, we show that all blood neutrophils constitutively secrete APRIL, and inflammation-associated stimuli, such as TNF, further upregulate APRIL. In a significant fraction of DLBCL patients, tumor cells constitutively produced the ELC-CXC chemokine CXCL-8 (IL8), enabling them to recruit APRIL-producing blood neutrophils. CXCL-8 production in DLBCL was unrelated to the cell of origin, as APRIL-producing neutrophils infiltrated CXCL-8 DLBCL from both germinal center (GC) and non-GC subtypes. Rather, CXCL-8 production implied events affecting DNA methylation and acetylation. Overall, our results showed that chemokine-mediated recruitment of neutrophils secreting the tumor-promoting factor APRIL mediates DLBCL progression. .
Mots clés
Animals, Humans, Interleukin-8, biosynthesis, Ligands, Lymphoma, Large B-Cell, Diffuse, genetics, Mice, Neutrophils, immunology, Tumor Microenvironment, immunology, Tumor Necrosis Factor Ligand Superfamily Member 13, biosynthesis
Référence
Cancer Res.. 2017 03 1;77(5):1097-1107
