title: Interleukin-10 modulates the sensitivity of peritoneal B lymphocytes to chemokines with opposite effects on stromal cell-derived factor-1 and B-lymphocyte chemoattractant.
abstract: Interleukin-10 (IL-10) is constitutively produced by peritoneal B1a lymphocytes, and stromal cell-derived factor-1 (SDF-1) by mesothelial cells. Independent studies have shown that both IL-10 and SDF-1 are involved in the persistence of the peritoneal B-lymphocyte compartment. This study shows that IL-10 and SDF-1 act in synergy on peritoneal B lymphocytes. Indeed, autocrine production of IL-10 was absolutely required for all effects of SDF-1 on these cells, including increased proliferation, survival, and chemotaxis. Moreover, adding IL-10 to peritoneal B lymphocytes increased the effects of SDF-1. Neither IL-5, IL-6, nor IL-9 affected the response of peritoneal B lymphocytes to SDF-1. IL-10 was chemokinetic for peritoneal B lymphocytes, increasing their random mobility. It also potentiated the SDF-1-induced reorganization of the cytoskeleton without affecting CXCR4 gene expression by peritoneal B lymphocytes. Despite its chemokinetic properties, IL-10 abolished the migration of peritoneal B lymphocytes in response to B-lymphocyte chemoattractant (BLC), a chemokine targeting B lymphocytes to lymphoid organ follicles. The ability of B1a lymphocytes to produce IL-10 constitutively, combined with the opposite effects of this cytokine on the responses to SDF-1 and BLC, may account for the selective accumulation of B1 lymphocytes in body cavities.
authors.affiliation: INSERM U131, Institut Paris-Sud sur les Cytokines, Clamart, France.
authors.forename: Karl
authors.initials: K
authors.lastname: Balabanian
authors.forename: Arnaud
authors.initials: A
authors.lastname: Foussat
authors.forename: Laurence
authors.initials: L
authors.lastname: Bouchet-Delbos
authors.forename: Jacques
authors.initials: J
authors.lastname: Couderc
authors.forename: Roman
authors.initials: R
authors.lastname: Krzysiek
authors.forename: Ali
authors.initials: A
authors.lastname: Amara
authors.forename: Françoise
authors.initials: F
authors.lastname: Baleux
authors.forename: Alain
authors.initials: A
authors.lastname: Portier
authors.forename: Pierre
authors.initials: P
authors.lastname: Galanaud
authors.forename: Dominique
authors.initials: D
authors.lastname: Emilie
mesh_terms: D000818:Animals; D019898:Autocrine Communication; D016175:B-Lymphocyte Subsets / Q000187:drug effects* / Q000276:immunology / Q000378:metabolism / Q000648:ultrastructure; D002470:Cell Survival; D054377:Chemokine CXCL12; D054382:Chemokine CXCL13; D019743:Chemokines, CXC / Q000494:pharmacology*; D002633:Chemotaxis / Q000187:drug effects; D003599:Cytoskeleton / Q000187:drug effects / Q000648:ultrastructure; D004347:Drug Interactions; D005260:Female; D005786:Gene Expression Regulation / Q000187:drug effects; D016753:Interleukin-10 / Q000096:biosynthesis / Q000235:genetics / Q000494:pharmacology*; D007378:Interleukins / Q000494:pharmacology; D051379:Mice; D008807:Mice, Inbred BALB C; D010529:Peritoneal Cavity / Q000166:cytology*; D019718:Receptors, CXCR4 / Q000096:biosynthesis / Q000235:genetics
chemical_list: D054377:Chemokine CXCL12; D054382:Chemokine CXCL13; D019743:Chemokines, CXC; C515256:Cxcl12 protein, mouse; C486386:Cxcl13 protein, mouse; D007378:Interleukins; D019718:Receptors, CXCR4; D016753:Interleukin-10