TY - JOUR N1 - Copyright of this article belongs to American Association of Immunologists. ID - open706 UR - http://www.jimmunol.org/content/153/4/1613.long IS - 4 A1 - Vijayakrishnan, L A1 - Kumar, V A1 - Agrewala, J N A1 - Mishra, G C A1 - Rao, K V Y1 - 1994/08/15/ N2 - Accumulation of primary Abs against two distinct epitopes on a designed polypeptide, MEP-1, was examined. The early primary response was predominantly against a C-terminal epitope (MEP 77-100), although subsequent maturation established an epitope within the N-terminal half (MEP 17-31) as the immunodominant one. Inversion of immunodominance correlated with the inability of anti-MEP 77-100 B cells to interact productively with T cells, which consequently received reduced help. Interaction between epitope-specific B and T cells was found to be attenuated in the presence of early primary anti-MEP-1 antiserum, and the extent of inhibition was directly proportional to the level and affinity of epitope-specific Igs. Therefore, it seems that early primary Abs to a multideterminant Ag selectively down-regulate maturation of epitope-specific primary humoral responses. PB - American Association of Immunologists JF - Journal of immunology (Baltimore, Md. : 1950) VL - 153 SN - 0022-1767 TI - Antigen-specific early primary humoral responses modulate immunodominance of B cell epitopes. SP - 1613 AV - restricted EP - 25 ER -