Tcr Alpha Beta Chains
Tcr Alpha Beta Chains - Related Videos
11:21
Streamlined Single Cell TCR Isolation and Generation of Retroviral Vectors for In Vitro and In Vivo Expression of Human TCRs
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Cited by 3 •
2017
The current protocol combines single cell paired human TCR alpha and beta chain sequencing with streamlined generation of retroviral vectors compatible with in vitro and in vivo TCR expression.
19:05
Measuring TCR-pMHC Binding In Situ using a FRET-based Microscopy Assay
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Cited by 9 •
2015
This manuscript describes how to conduct (single molecule) Förster Resonance Energy Transfer (FRET)- based assays to measure the binding dynamics between T-cell antigen receptor (TCR) and antigenic peptide-loaded MHC molecules as they occur within the immunological synapse of a T-cell in contact with a functionalized planar supported lipid bilayer.
16:10
A TIRF Microscopy Technique for Real-time, Simultaneous Imaging of the TCR and its Associated Signaling Proteins
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Cited by 13 •
2012
The compartmentalization of proteins either within the plasma membrane or into intracellular locations is one regulatory mechanism that can greatly influence signaling outcomes; hence, to understand signaling it is important to study the spatial and temporal behavior of the proteins involved. We describe here a TIRF microscopy based system to study signal transduction in T cells, but is broadly applicable.
01:25
Beta
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2024
Beta is a crucial metric in finance used to assess an investment's risk and expected return relative to the overall market. It is calculated as the slope of the line in a scatterplot that compares the returns of an individual stock to the returns of the market benchmark, typically represented by a broad market index. Beta quantifies how much a stock's price moves in response to market movements, providing insight into its volatility and systematic risk. A beta of one indicates that the stock's...
06:42
Identifying Kinase Inhibitors that Modulate the Thymocyte Response to Strong TCR Signals
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2025
In this video, we describe a method to identify the small-molecule kinase inhibitors that modulate the apoptosis of self-reactive CD4+CD8+ double-positive immature thymocytes. Apoptosis is induced in the double-positive thymocytes by activating them with anti-CD3- and anti-CD28-coated magnetic beads; this is followed by a small-molecule inhibitor treatment and flow cytometry analysis to detect if the inhibitors modulate the apoptotic marker expression.
FAQs
Gene rearrangement generates different variable-region sequences in the alpha and beta chains, producing many distinct receptor combinations. This diversity allows separate T-cell clones to recognize different peptide antigens when those peptides are presented by major histocompatibility complex, or MHC, molecules. The resulting receptor variation provides a molecular basis for broad immune recognition of infected or abnormal cells.
The alpha and beta chains function as a paired receptor rather than as independent recognition units. Their combined variable regions create the receptor surface that determines which peptide antigens can be recognized in the context of MHC molecules. Studying the paired chains therefore helps connect receptor structure with antigen specificity and with the selection of particular T-cell clones.
TCR alpha beta chains recognize peptide antigens when the peptides are presented by MHC molecules, so recognition depends on this combined antigen-and-MHC context. A receptor is therefore not evaluated only for whether it can bind a peptide in isolation. This relationship is central to understanding how T cells detect infected or abnormal cells during immune responses.
Binding of the receptor to its peptide-MHC target triggers signaling through the associated CD3 complex. CD3 therefore links extracellular recognition by the alpha-beta receptor to downstream T-cell signaling. This connection matters because receptor binding alone is not the complete response; the associated signaling machinery helps initiate the cellular events underlying antigen-driven T-cell activity.
Analysis of these chains can connect receptor diversity with the development and selection of T-cell populations. Distinct rearranged receptors mark different recognition possibilities, while clonal selection helps explain why particular T-cell clones become relevant during an immune response. In infection research, this perspective supports examination of how T-cell recognition relates to responses against pathogens.
Studying these chains provides a way to investigate how T-cell recognition relates to immunodeficiency, autoimmunity, and vaccine responses. The same receptor features that support pathogen recognition can be examined in settings where immune responses are insufficient, misdirected, or induced by vaccination. Their analysis also contributes to research on engineered T-cell therapies, extending the work beyond basic immune biology.