Peyer's patches in murine AIDS: Dissociation between lymphoproliferation and anergy

S. Colombi, M. Moutschen, L. De Leval, M. A. Demoitié, M. Trebak, M. T. Martin, J. Boniver

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


RadLV-Rs infection induces a murine immunodeficiency syndrome associated with a dramatic enlargement of spleen and lymph nodes. Surprisingly, the lymphoproliferation excludes thymus and Peyer's patches (PP). To understand the cellular interactions underlying lymphoproliferation further, the authors investigated the fate of PP in RadLV-Rs infected mice. The atrophy of PP was mostly due to the depletion of B cells, while the proportion of CD4+ and CD8+ T cells was increased. Nevertheless, B cell phenotype was modified with the emergence of lymphocytes with a low expression of B220 in infected PP. T cells characterized by a memory/activated phenotype in control PP did not undergo phenotypical changes after viral infection (i.e. regarding Thy-1 and CD44 expression). Despite the absence of lymphoproliferation, PP T and B cells displayed altered responses to mitogens in vitro. Finally, alterations of the expression of adhesion molecules and vascular addressins could not explain the atrophy of PP by a reduced homing to this lymphoid site. B cells and T cells from normal PP are clearly different from lymph nodes (LN) lymphocytes. The authors propose that the particular functional state which characterizes PP lymphocytes influences the B cell/T cell crosstalk necessary for RadLV-Rs-induced lymphoproliferation.

Original languageEnglish (US)
Pages (from-to)175-181
Number of pages7
JournalScandinavian Journal of Immunology
Issue number2
StatePublished - 1997

All Science Journal Classification (ASJC) codes

  • Immunology


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