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© Artur Scherf
Scanning Electron Microscopy of Red Blood Cell infected by Plasmodium falciparum.
Publication : Molecular immunology

Anti-histone autoantibodies react specifically with the B cell surface

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Molecular immunology - 01 Apr 1993

Mécheri S, Dannecker G, Dennig D, Poncet P, Hoffmann MK

Link to Pubmed [PMID] – 8387634

Mol. Immunol. 1993 Apr;30(6):549-57

In an attempt to induce an immune response against Mls-1a antigens by immunizing C57B1/6 mouse (Mls-1b) with purified B cells from DBA/2 mouse (Mls-1a), we generated a panel of monoclonal antibodies from which the 5B9.6 mAb, taken as a representative antibody, was thoroughly investigated. This antibody specifically reacts with B cells from all mouse strains studied including C57Bl/6 mice as shown by FACS analysis of double-antibody labelled spleen cells. Using enzyme immunoassays and immunoprecipitation techniques, 5B9.6 mAb was found to be specific for histones. Amino acid sequence analysis of a peptide derived from a 5B9.6-immunoprecipitated polypeptide from DBA/2 B cells showed a 100% homology with a sequence within H2B histones. Furthermore, 5B9.6 mAb was able to interact with the cell surface of 7OZ/3 cell line, known as a typical pre-B cell line. The presence of histones can be modulated on the surface of 7OZ/3 cells since this antigen was upregulated after exposure of these cells to a cocktail of IL-1 and cAMP. Finally, 5B9.6 mAb was shown to interact with freshly isolated B cells from human peripheral blood.