Transcription factors that regulate memory in humoral responses
Article first published online: 13 JUN 2006
Volume 211, Issue 1, pages 269–279, June 2006
How to Cite
Calame, K. (2006), Transcription factors that regulate memory in humoral responses. Immunological Reviews, 211: 269–279. doi: 10.1111/j.0105-2896.2006.00377.x
- Issue published online: 13 JUN 2006
- Article first published online: 13 JUN 2006
Summary: At least three types of B lymphocytes are important for providing memory in a humoral immune response: ‘classical’ memory cells that do not secrete immunoglobulin (Ig), long-lived plasma cells (LLPCs) in the bone marrow, and ‘innate-like’ B-1 cells. In this review, our work on B-lymphocyte-induced maturation protein-1 (Blimp-1), a critical regulator of terminal B-cell differentiation, is discussed in the context of current knowledge of all transcriptional controls that regulate these three types of B cells. Blimp-1 is not required for formation of memory cells, but it is required for them to progress toward becoming plasma cells. Blimp-1 is required for Ig secretion in plasma cells and in B-1 cells. Induction of the activator X-box-binding protein-1 and formation of µ-secreted mRNA depend on Blimp-1 in both cell types. Finally, even after their formation, LLPCs in the bone marrow continue to require Blimp-1 for their maintenance.