Journal
IMMUNITY
Volume 34, Issue 3, Pages 375-384Publisher
CELL PRESS
DOI: 10.1016/j.immuni.2011.01.011
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- NIH [R01 AI072058]
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The contribution of Toll-like receptor (TLR) signaling to T cell-dependent (TD) antibody responses was assessed by using mice lacking the TLR signaling adaptor MyD88 in individual cell types. When a soluble TLR9 ligand was used as adjuvant for a protein antigen, MyD88 was required in dendritic cells but not in B cells to enhance the TO antibody response, regardless of the inherent immunogenicity of the antigen. In contrast, a TLR9 ligand contained within a virus-like particle substantially augmented the TD germinal center IgG antibody response, and this augmentation required B cell MyD88. The ability of B cells to discriminate between antigens based on the physical form of a TLR ligand probably reflects an adaptation to facilitate strong antiviral antibody responses.
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