Independent signals regulate development of primary and secondary follicle structure in spleen and mesenteric lymph node

Yang Xin Fu, Guangming Huang, Mitsuru Matsumoto, Hector Molina, David D. Chaplin

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Abstract

Lymphotoxin-α-deficient (LT-α(-/-)) mice manifest congenital absence of lymph nodes (LNs) and Peyer's patches and disturbed spleen follicle structure. The splenic white pulp areas show loss of discrete T and B lymphocyte zones, of follicular dendritic cell (FDC) clusters, and of germinal centers (GCs). Tumor necrosis factor receptor I-deficient (TNFR-I(- /-)) mice show similar absence of FDC clusters and GCs but retain segregation of T and B cell zones. Rarely are mesenteric LNs found in LT-α(-/-) mice. These mesenteric LNs show segregation oft and B cell zones similar to wild- type mice. In contrast, mesenteric LNs in TNFR-I(-/-) mice manifest grossly disturbed organization oft and B cells. Both LT-α(-/-) and TNFR-I(-/-) mice lacked FDC clusters in LNs and spleen. Interestingly, although both LT-α(- /-) and TNFR.I(-/-) mice that had been immunized with sheep red blood cells failed to form GCs in the spleen, they both developed GC-like clusters of peanut agglutinin-positive (PNA+) cells in their LNs. Furthermore, when lethally irradiated recombination activating gene (RAG)-I-deficient (RAG-I(- /-)) mice that had received spleen cells from LT-α(-/-) mice were immunized with sheep red blood cells, they failed to generate PNA+ clusters in the reconstituted spleen but showed robust PNA+ clusters in the reconstituted LNs. These data demonstrate that the signals that regulate the development of distinct T and B cell zones as well as the signals that regulate B cell activation to produce clusters of PNA+ cells differ between the spleen and LNs.

Original languageEnglish (US)
Pages (from-to)5739-5743
Number of pages5
JournalProceedings of the National Academy of Sciences of the United States of America
Volume94
Issue number11
DOIs
StatePublished - May 27 1997

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Spleen
Lymph Nodes
B-Lymphocytes
Germinal Center
Follicular Dendritic Cells
Receptors, Tumor Necrosis Factor, Type I
T-Lymphocytes
Genetic Recombination
Sheep
Erythrocytes
Peanut Agglutinin
Lymphotoxin-alpha
Peyer's Patches
Tumor Necrosis Factor Receptors
Genes

ASJC Scopus subject areas

  • General

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Independent signals regulate development of primary and secondary follicle structure in spleen and mesenteric lymph node. / Fu, Yang Xin; Huang, Guangming; Matsumoto, Mitsuru; Molina, Hector; Chaplin, David D.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 94, No. 11, 27.05.1997, p. 5739-5743.

Research output: Contribution to journalArticle

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AB - Lymphotoxin-α-deficient (LT-α(-/-)) mice manifest congenital absence of lymph nodes (LNs) and Peyer's patches and disturbed spleen follicle structure. The splenic white pulp areas show loss of discrete T and B lymphocyte zones, of follicular dendritic cell (FDC) clusters, and of germinal centers (GCs). Tumor necrosis factor receptor I-deficient (TNFR-I(- /-)) mice show similar absence of FDC clusters and GCs but retain segregation of T and B cell zones. Rarely are mesenteric LNs found in LT-α(-/-) mice. These mesenteric LNs show segregation oft and B cell zones similar to wild- type mice. In contrast, mesenteric LNs in TNFR-I(-/-) mice manifest grossly disturbed organization oft and B cells. Both LT-α(-/-) and TNFR-I(-/-) mice lacked FDC clusters in LNs and spleen. Interestingly, although both LT-α(- /-) and TNFR.I(-/-) mice that had been immunized with sheep red blood cells failed to form GCs in the spleen, they both developed GC-like clusters of peanut agglutinin-positive (PNA+) cells in their LNs. Furthermore, when lethally irradiated recombination activating gene (RAG)-I-deficient (RAG-I(- /-)) mice that had received spleen cells from LT-α(-/-) mice were immunized with sheep red blood cells, they failed to generate PNA+ clusters in the reconstituted spleen but showed robust PNA+ clusters in the reconstituted LNs. These data demonstrate that the signals that regulate the development of distinct T and B cell zones as well as the signals that regulate B cell activation to produce clusters of PNA+ cells differ between the spleen and LNs.

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