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Isolation and Activation of Murine Lymphocytes
Published on: October 30, 2016
B-cell CD25 expression in murine primary and secondary lymphoid tissue
S Amu1, I Gjertsson, A Tarkowski
1Department of Rheumatology and Inflammation Research, Sahlgrenska Academy at Göteborg University, Göteborg, Sweden. sylvie.amu@rheuma.gu.se
Scandinavian Journal of Immunology
|October 13, 2006
Summary
CD25 positive B cells, unlike CD25 negative B cells, exhibit distinct phenotypic differences across various mouse lymphoid organs. These CD25+ B cells demonstrate characteristics suggesting enhanced antigen presentation and a more mature phenotype.
Area of Science:
- Immunology
- Cell Biology
Background:
- Interleukin-2 receptor alpha-chain (CD25) expression is well-characterized on T cells.
- Limited information exists regarding the phenotype and function of CD25 expressing B cells.
Purpose of the Study:
- To investigate the phenotypic characteristics of CD25 expressing B cells in various murine lymphoid organs.
- To compare the surface marker expression of CD25+ B cells with CD25- B cells.
Main Methods:
- Flow cytometry analysis of B cells from bone marrow, peritoneal cavity, spleen, lymph nodes, blood, and Peyer's patches.
- Staining with a panel of cell surface markers to define B cell phenotypes.
Main Results:
- CD25 expression on B cells varied significantly by organ: 49% in bone marrow, 16% in peritoneal cavity, 2% in spleen, and 1% in lymph nodes; absent in blood and Peyer's patches.
- CD25+ B cells in spleen, lymph nodes, and peritoneal cavity showed higher expression of AA4.1, CD5, CD69, CD80, CD86, CD122, CD132, IgA, IgG, and IgM compared to CD25- B cells.
- Differential expression of IgD and IA-IE was observed on CD25+ B cells in spleen and lymph nodes, and altered expression of several markers including AA4.1, IgG, and IA-IE was noted in bone marrow CD25+ B cells.
Conclusions:
- B cells expressing CD25 are phenotypically distinct from their CD25- counterparts.
- The observed phenotype of CD25+ B cells suggests a greater capacity for antigen presentation and a more mature immune cell profile.
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