Article
B and CD4+ T-cell expression of TLR2 is critical for optimal induction of a T-cell-dependent humoral immune response to intact Streptococcus pneumoniae.
European journal of immunology - 1 Dec 2008
Vasilevsky Sam, Chattopadhyay Gouri, Colino Jesus, Yeh Tze-Jou, Chen Quanyi, Sen Goutam, Snapper Clifford M
Abstract excerpt
TLR2(-/-) mice immunized with Streptococcus pneumoniae (Pn) elicit normal IgM, but defective CD4(+) T-cell-dependent type 1 IgG isotype production, associated with a largely intact innate immune response. We studied the T-cell-dependent phosphorylcholine (PC)-specific IgG3 versus the T-cell-independent IgM response to Pn to determine whether TLR2 signals directly via the adaptive immune system. Pn-activated...
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