Antibody response to a T-dependent antigen requires B cell expression of complement receptors.
Several lines of evidence indicate that antibody responses to T-dependent antigens require complement receptors expressed on either B lymphocytes or follicular dendritic cells. We have used RAG-2 deficient blastocyst complementation to create mice specifically lacking B cell complement receptors. Despite normal expression of complement receptor 1 (CR1[CD35]) and CR2 (CD21) on follicular dendritic cells, these mice have a profound defect in their capacity to mount a T-dependent antibody response. This is the first direct demonstration in vivo that B cell expression of complement receptors is required for a humoral immune response. This is the first direct demonstration in vivo that B cell expression of complement receptors is required for a humoral immune response. This suggests that CD21 and/or CD35 on B lymphocytes may be required for cellular activation, adsorptive endocytosis of antigen, recruitment to germinal centers, and/or protection from apoptosis during the humoral response to T-dependent antigens.
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Related Subject Headings
- T-Lymphocytes
- Spleen
- Receptors, Complement 3d
- Receptors, Complement 3b
- Receptors, Complement
- Proteins
- Mutagenesis
- Mice, Mutant Strains
- Mice
- Immunology
Citation
Published In
DOI
ISSN
Publication Date
Volume
Issue
Start / End Page
Location
Related Subject Headings
- T-Lymphocytes
- Spleen
- Receptors, Complement 3d
- Receptors, Complement 3b
- Receptors, Complement
- Proteins
- Mutagenesis
- Mice, Mutant Strains
- Mice
- Immunology