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Molecular interactions at the interface between helper T cells and antigen-presenting B cells govern the ability to produce specific antibodies, which is a central event in protective immunity generated by natural infection or man-made vaccines. In order for a T cell to deliver effective help to a B cell and guide affinity maturation, it needs to provide feedback that is proportional to the amount of antigen the B cell collects with its surface antibody. This review focuses on mechanisms by which T and B cells manage to count the products of antigen capture and encourage B cells with the best receptors to dominate the response and make antibody-producing plasma cells. We discuss what is known about the proportionality of T cells responses to presented antigens and consider the mechanisms that B cells may use to keep count of positive feedback from T cells.

Original publication

DOI

10.1016/j.molcel.2014.04.001

Type

Journal article

Journal

Molecular cell

Publication Date

04/2014

Volume

54

Pages

255 - 262

Addresses

Kennedy Institute of Rheumatology, Nuffield Department of Orthopedics, Rheumatology, and Musculoskeletal Sciences, The University of Oxford, Roosevelt Drive, Headington OX3 7FY, UK; Skirball Institute of Biomolecular Medicine, Department of Pathology, New York University School of Medicine, 540 First Avenue, New York, NY 10016, USA. Electronic address: michael.dustin@kennedy.ox.ac.uk.

Keywords

B-Lymphocytes, T-Lymphocytes, Helper-Inducer, Cell Membrane, Receptors, Antigen, T-Cell, Antigen Presentation, Major Histocompatibility Complex, Models, Immunological, Exosomes, Asymmetric Cell Division