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Divergency in the specificity of the induction and maintenance of neonatal suppression
T Mota-Santos1, H Masmoudi, D Voegtlé
1Département d'Immunologie, Institut Pasteur, Paris, France.
Neonatal treatment of BALB/c mice with anti-VHT15 antibodies suppresses serum expression of VHT15 immunoglobulins in adult animals (2 months) which remains for over 8 months in half of the cases. Suppressed mice, however, contain control numbers of B cells expressing genes of the S107VH family and producing VHT15 after mitogenic stimulation. Furthermore, immunization with phosphorylcholine (PC) breaks suppression and stimulates the production of VHT15 anti-PC antibodies. These animals, however, contain no detectable B lymphocytes expressing the T15 idiotype and produce no T15 idiotype-positive antibodies in response to PC. These results are discussed in the context of lymphocyte repertoire selection.
Neonatal treatment of BALB/c mice with anti-VHT15 antibodies suppresses serum expression of VHT15 immunoglobulins in adult animals (2 months) which remains for over 8 months in half of the cases. Suppressed mice, however, contain control numbers of B cells expressing genes of the S107VH family and producing VHT15 after mitogenic stimulation. Furthermore, immunization with phosphorylcholine (PC) breaks suppression and stimulates the production of VHT15 anti-PC antibodies. These animals, however, contain no detectable B lymphocytes expressing the T15 idiotype and produce no T15 idiotype-positive antibodies in response to PC. These results are discussed in the context of lymphocyte repertoire selection.