Formation and IL-2 Production Syndrome Protein in Immune Synapse Differential Roles for Wiskott-Aldrich
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Defective Th1 cytokine gene transcription in CD4+ and CD8+ T cells from Wiskott-Aldrich syndrome patients.
Wiskott-Aldrich syndrome (WAS) protein (WASP) plays a key role in TCR-mediated activation and immunological synapse formation. However, the effects of WASP deficiency on effector functions of human CD4+ and CD8+ T cells remain to be determined. In this study, we report that TCR/CD28-driven proliferation and secretion of IL-2, IFN-gamma, and TNF-alpha are strongly reduced in CD8+ T cells from WA...
متن کاملWASp-dependent actin cytoskeleton stability at the dendritic cell immunological synapse is required for extensive, functional T cell contacts
The immunological synapse is a highly structured and molecularly dynamic interface between communicating immune cells. Although the immunological synapse promotes T cell activation by dendritic cells, the specific organization of the immunological synapse on the dendritic cell side in response to T cell engagement is largely unknown. In this study, confocal and electron microscopy techniques we...
متن کاملThe Wiskott-Aldrich syndrome protein permits assembly of a focused immunological synapse enabling sustained T-cell receptor signaling.
BACKGROUND T-cell activation relies on the assembly of the immunological synapse, a structure tightly regulated by the actin cytoskeleton. The precise role of the Wiskott-Aldrich syndrome protein, an actin cytoskeleton regulator, in linking immunological synapse structure to downstream signaling remains to be clarified. DESIGN AND METHODS To address this point, CD4(+) T cells from patients wi...
متن کاملWiskott-Aldrich Syndrome (WAS): A Case Report in Mauritius and Review
Wiskott-Aldrich is an X-lined recessive disorder typically characterized by thrombocytopenia, eczema and recurrent infections. We report the four year treatment progress of a six year old boy who initially presented with vesicular lesions over the trunk, upper and lower extremities and face and blood tinged stools at the age of 2 weeks. From the family pedigree, there were two suspected cases t...
متن کاملThe Wiskott-Aldrich Syndrome: The Actin Cytoskeleton and Immune Cell Function
Wiskott-Aldrich syndrome (WAS) is a rare X-linked recessive primary immunodeficiency characterised by immune dysregulation, microthrombocytopaenia, eczema and lymphoid malignancies. Mutations in the WAS gene can lead to distinct syndrome variations which largely, although not exclusively, depend upon the mutation. Premature termination and deletions abrogate Wiskott-Aldrich syndrome protein (WA...
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تاریخ انتشار 2004