Differential signalling during B-cell maturation.

Margaret M Harnett; Elad Katz; Catriona A Ford

doi:10.1016/j.imlet.2004.11.002

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Differential signalling during B-cell maturation.

Margaret M Harnett·Elad Katz·Catriona A Ford

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Abstract

The molecular mechanism by which the antigen receptors (BCR) on B cells can elicit differential maturation state-specific responses is one of the central problems in B-cell differentiation yet to be resolved. Indeed, many of the early signalling events detected following BCR ligation, such as activation of protein tyrosine kinases (PTK), phospholipase C (PLC), phosphoinositide-3-kinase (PI 3K), protein kinase C (PKC) and the RasMAPK (mitogen activating protein kinase) signalling cascades are observed throughout B-cell maturation. However, it is becoming clear that the differential functional responses of these BCR-coupled signals observed during B-cell maturation are dependent on a number of parameters including signal strength and duration, subcellular localisation of the signal, maturation-restricted expression of downstream signalling effector elements/isoforms and modulation of signal by co-receptors. Thus, the combined signature of BCR signalling is likely to dictate the functional response and act as a developmental checkpoint for B-cell maturation.

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Animals B-Lymphocytes Cell Differentiation Extracellular Signal-Regulated MAP Kinases Humans Membrane Microdomains Phosphatidylinositol 3-Kinases Phospholipase C gamma Receptors, Antigen, B-Cell Signal Transduction Type C Phospholipases rho GTP-Binding Proteins Journal Article Review

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Margaret M Harnett, Elad Katz, Catriona A Ford. 2004-11-30. Differential signalling during B-cell maturation.. https://doi.org/10.1016/j.imlet.2004.11.002

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