Anti-idiotype stimulation of antigen-specific antigen-independent antibody responses in vitro. II. Triggering of B lymphocytes by idiotype plus anti-idiotype in the absence of T lymphocytes.
Antibodies specific for the idiotypes of B10 anti-(T,G)-A--L antibodies (anti-id) induced B lymphocytes to secrete anti-(T,G)-A--L antibodies in vitro in the absence of both antigen and T lymphocytes, provided either that the B lymphocytes were previously primed in vivo with (T,G)-A--L or that id specific for (T,G)-A--L was added to the cultures. These antigen- and T lymphocyte-independent responses were antigen specific and appeared not to require accessory cells. The results suggested that B lymphocyte activation occurred via the formation of id-anti-id complexes, and evidence was obtained that this activation involved two separate interactions between the B lymphocytes and the id-anti-id complexes. These studies document a previously undescribed regulatory function of anti-idiotype antibodies.
D000818:Animals; D000888:Antibodies, Anti-Idiotypic / Q000502:physiology*; D000921:Antibody-Producing Cells / Q000276:immunology* / Q000378:metabolism; D000955:Antigens, T-Independent / Q000276:immunology; D001402:B-Lymphocytes / Q000276:immunology*; D002448:Cell Adhesion; D000939:Epitopes; D007130:Immunoglobulin Idiotypes / Q000276:immunology* / Q000502:physiology; D007075:Immunoglobulin M / Q000096:biosynthesis; D008213:Lymphocyte Activation; D008211:Lymphocyte Cooperation; D008212:Lymphocyte Depletion; D051379:Mice; D008810:Mice, Inbred C57BL; D010455:Peptides / Q000008:administration & dosage / Q000276:immunology; D051381:Rats; D013601:T-Lymphocytes / Q000276:immunology*
D000888:Antibodies, Anti-Idiotypic; D000955:Antigens, T-Independent; D000939:Epitopes; D007130:Immunoglobulin Idiotypes; D007075:Immunoglobulin M; D010455:Peptides; C021759:(T,G)-A-L