T Cell-Dependent B Cell Activation

David Parker

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Production of high-affinity, long-lived, circulating antibodies to vaccines or infectious agents or their products requires collaboration between two kinds of lymphocytes: antigen-specific helper T lymphocytes and antigen-specific B lymphocytes. The T cells provide the signals that the B cells need to proliferate and differentiate into clones of antibody-secreting plasma cells, and memory B cells. During birth in the bone marrow, each B cell assembles a gene encoding a unique antibody molecule, which it puts on the cell surface as a receptor for antigen. Antigen binding to the receptor on those rare B cells that are specific for it delivers activating signals to the B cell, but these signals are typically insufficient for an antibody response. The surface receptor also enables the antigen-specific B cell to internalize the antigen, process it, and present it back on the cell surface as a small peptide bound to an MHC class II molecule as a target for the helper T cell. When the helper T cell recognizes antigen presented by the B cell, it delivers help to the B cell in the form of secreted cytokines and an essential membrane-bound cytokine in TNF family called CD40 ligand (CD40L or CD154).

Original languageEnglish (US)
Title of host publicationActivation of the Immune System
PublisherElsevier Inc.
Pages175-178
Number of pages4
Volume3
ISBN (Print)9780080921525
DOIs
StatePublished - Apr 27 2016

Fingerprint

B-Lymphocytes
T-Lymphocytes
Antigens
Helper-Inducer T-Lymphocytes
CD40 Ligand
Cytokines
Antibody-Producing Cells
Antigen Receptors
Antibodies
Viral Tumor Antigens
Plasma Cells
Antibody Formation
Vaccines
Clone Cells
Bone Marrow
Parturition
Lymphocytes
Peptides
Membranes
Genes

Keywords

  • Antibody response
  • Antigen presentation
  • B cell activation
  • CD40
  • CD40L
  • Germinal center
  • MHC class II
  • T cell help
  • Tfh

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Parker, D. (2016). T Cell-Dependent B Cell Activation. In Activation of the Immune System (Vol. 3, pp. 175-178). Elsevier Inc.. https://doi.org/10.1016/B978-0-12-374279-7.09010-X

T Cell-Dependent B Cell Activation. / Parker, David.

Activation of the Immune System. Vol. 3 Elsevier Inc., 2016. p. 175-178.

Research output: Chapter in Book/Report/Conference proceedingChapter

Parker, D 2016, T Cell-Dependent B Cell Activation. in Activation of the Immune System. vol. 3, Elsevier Inc., pp. 175-178. https://doi.org/10.1016/B978-0-12-374279-7.09010-X
Parker D. T Cell-Dependent B Cell Activation. In Activation of the Immune System. Vol. 3. Elsevier Inc. 2016. p. 175-178 https://doi.org/10.1016/B978-0-12-374279-7.09010-X
Parker, David. / T Cell-Dependent B Cell Activation. Activation of the Immune System. Vol. 3 Elsevier Inc., 2016. pp. 175-178
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