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Main description:
The proper physiological functioning of most eukaryotic cells requires their assembly into multi-cellular tissues that form organized organ systems. Cells of the immune system develop in bone marrow and lymphoid organs, but as the cells mature they leave these organs and circulate as single cells. Antigen receptors (TCRs) of T cells search for membrane MHC proteins that are bound to peptides derived from infectious pathogens or cellular transformations. The detection of such speci?c peptide-MHC antigens initiates T cell activation, adhesion, and immune-effectors functions. Studies of normal and transformed T cell lines and of T cells from transgenic mice led to comprehensive understanding of the mole- lar basis of antigen-receptor recognition and signaling. In spite of these remarkable genetic and biochemical advances, other key physiological mechanisms that par- cipate in sensing and decoding the immune context to induce the appropriate cellular immune responses remain unresolved. TCR recognition is tightly regulated to trigger sensitive but balanced T cell responses that result in the effective elimination of the pathogens while minimizing collateral damage to the host. The sensitivity of TCR recognition has to be properly tempered to prevent unintended activation by self-peptide-MHC complexes that cause autoimmune diseases. It is likely that once the TCR is engaged by a peptide- MHC and TCR signaling begins, additional regulatory mechanisms, involving other receptors, would increase the ?delity of the response.
Contents:
Preface.- The immune synapse: a localized gateway to regulated immunity.- Insights into function of the immunological synapse from studies with supported planar bilayers.- Immunological synapses within context: Patterns of cell-cell communication and their application in T-T interactions.- Molecular and cellular dynamics at the early stages of antigen encounter: The B cell immunological synapse.- Inhibitory and regulatory immune synapses.- The immunological synapse, TCR microclusters, and T cell activation.- Signaling amplification at the immunological synapse.- ...........................- A conformation-induced oligomerization model for B cell receptor microclustering and signaling.- Co-receptors and recognition of self at the immunological synapse.- Vesicle traffic to the immunological synapse. A multifunctional process targeted by lymphotropic viruses.- Plasticity of immunological synapses.- APC, T cells and the immune synapse.- Subject index
PRODUCT DETAILS
Publisher: Springer (Springer-Verlag Berlin and Heidelberg GmbH & Co. K)
Publication date: December, 2009
Pages: 270
Weight: 626g
Availability: Available
Subcategories: Immunology
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