A subset of Ly-1 inducer T cell clones activates B cell proliferation but directly inhibits subsequent IgG secretion
- PMID: 2580039
- PMCID: PMC2189061
- DOI: 10.1084/jem.161.4.785
A subset of Ly-1 inducer T cell clones activates B cell proliferation but directly inhibits subsequent IgG secretion
Abstract
We find that a fraction of Ly-1+2- inducer T cell clones inhibits differentiation of memory B cells into IgG-secreting plaque-forming cells. Inhibition of secondary antibody responses was not the result of induction of Ly-2+ T suppressors. Instead, inducer cells directly inactivated B cells, requiring an antigen bridge as well as identity at the major histocompatibility complex (I-A) locus. The interaction between the inducer T cell clone and hapten-specific B memory cells results in an early proliferative response and subsequent failure of B cells to secrete antibody in response to T helper cell signals. Possible mechanisms for this novel type of B cell inactivation are explored.
