Journal
JOURNAL OF IMMUNOLOGY
Volume 176, Issue 8, Pages 4515-4519Publisher
AMER ASSOC IMMUNOLOGISTS
DOI: 10.4049/jimmunol.176.8.4515
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Funding
- NIAID NIH HHS [AI43603] Funding Source: Medline
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Ag, in the form of immune complexes retained on follicular dendritic cells, has been implicated in the development and maintenance of B cell memory. We addressed this question using a H chain transgenic (Tg) mouse model that lacks secreted Ig (mIg), and thus does not deposit Ag-containing immune complexes. We compared the ability of the mIg strain and a control Tg strain, which secretes IgM, to develop and maintain long-lived memory cells. After immunization, there was an increase of Ag-specific B cells in both strains that was maintained for at least 20 wk. We labeled the long-livedAg-specific cells with BrdU and found that this population was similarly maintained. In addition, both Tgs were able to maintain a functional memory response as measured by secondary germinal center reactions. Our studies indicate that localization of Ag on follicular dendritic cells is not necessary for development and maintenance of B cell memory.
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