Enforced BCL2 expression in B-lymphoid cells prolongs antibody responses and elicits autoimmune disease.

A Strasser, S Whittingham, DL Vaux… - Proceedings of the …, 1991 - National Acad Sciences
A Strasser, S Whittingham, DL Vaux, ML Bath, JM Adams, S Cory, AW Harris
Proceedings of the National Academy of Sciences, 1991National Acad Sciences
The biological functions of the BCL2 gene were investigated in transgenic mice harboring
human BCL2 cDNA under the control of an immunoglobulin heavy chain enhancer (E mu).
Mice of a representative transgenic strain, E mu-bcl-2-22, had a great excess of B
lymphocytes, immunoglobulin-secreting cells, and serum immunoglobulins, attributable to
increased longevity of B-lineage cells. Pre-B and plasma cells as well as B cells exhibited
prolonged survival in culture. Immunized animals produced an amplified and protracted …
The biological functions of the BCL2 gene were investigated in transgenic mice harboring human BCL2 cDNA under the control of an immunoglobulin heavy chain enhancer (E mu). Mice of a representative transgenic strain, E mu-bcl-2-22, had a great excess of B lymphocytes, immunoglobulin-secreting cells, and serum immunoglobulins, attributable to increased longevity of B-lineage cells. Pre-B and plasma cells as well as B cells exhibited prolonged survival in culture. Immunized animals produced an amplified and protracted antibody response. Within the first year of life, most mice spontaneously produced antibodies to nuclear antigens, and 60% developed kidney disease, diagnosed as immune complex glomerulonephritis. Thus E mu-bcl-2-22 mice constitute a transgenic model for a systemic autoimmune disease resembling the human disorder systemic lupus erythematosus.
National Acad Sciences