Differential migration of in vivo primed B and T lymphocytes to lymphoid and non-lymphoid organs.
Our study describes tissue-specific migration of T and B cells during a localized anti-viral immune response. After mouse mammary tumor virus (MMTV) injection, B lymphocytes of the draining lymph node become infected and present a retroviral superantigen to CD4(+) T lymphocytes. Infected B cells receive superantigen-mediated help in a fashion comparable to classical immune responses. To investigate the fate of T and B lymphocytes that had interacted via cognate help in the same peripheral lymph node microenvironment we adoptively transferred them into naive recipients. Here we show that MMTV-infected B cells and superantigen-stimulated T cells were programmed to migrate to distinct sites of the body. Plasmablasts but not T cells migrated to the mammary gland and activated alpha4beta1 integrins were found to have a crucial role in the migration to the mammary gland. In contrast, T cells had a much higher affinity for secondary lymphoid organs and large intestine. This demonstrates that upon antigen-driven B and T lymphocyte interaction in the local draining lymph node a subset-specific homing program for B and T lymphocytes is induced.
Finke
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Ludwig Institute for Cancer Research, Lausanne Branch, University of Lausanne, Epalinges, Switzerland.
Acha-Orbea
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D019264:Adoptive Transfer; D000818:Animals; D000956:Antigens, Viral / Q000276:immunology; D001402:B-Lymphocytes / Q000276:immunology* / Q000637:transplantation; D001940:Breast / Q000276:immunology*; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology* / Q000637:transplantation; D002465:Cell Movement; D005260:Female; D039041:Integrin alpha4beta1; D016023:Integrins / Q000502:physiology; D008213:Lymphocyte Activation; D008221:Lymphoid Tissue / Q000276:immunology*; D008324:Mammary Tumor Virus, Mouse / Q000276:immunology; D051379:Mice; D008807:Mice, Inbred BALB C; D016201:Receptors, Lymphocyte Homing / Q000502:physiology; D012192:Retroviridae Infections / Q000276:immunology; D018089:Superantigens / Q000276:immunology; D019010:Vascular Cell Adhesion Molecule-1 / Q000378:metabolism
D000956:Antigens, Viral; D039041:Integrin alpha4beta1; D016023:Integrins; D016201:Receptors, Lymphocyte Homing; D018089:Superantigens; D019010:Vascular Cell Adhesion Molecule-1