The interdisciplinary science of T-cell recognition
Johannes B Huppa1, Mark M Davis
1Center for Pathophysiology, Infectiology and Immunology, Institute for Hygiene and Applied Immunology, Medical University of Vienna, Vienna, Austria. Johannes.Huppa@meduniwien.ac.at
Advances in Immunology
|July 27, 2013
Summary
T-cells detect single agonist peptide/MHC complexes despite numerous endogenous ligands and cross-reactive T-cell receptors (TCRs). This recognition within the immune synapse is influenced by TCR affinity, cell biology, and physical forces.
Area of Science:
- Immunology
- Biochemistry
- Cell Biology
Background:
- T-cell recognition of peptide/MHC (pMHC) complexes is a complex process involving T-cell receptors (TCRs) and antigen-presenting cells.
- A key challenge is understanding how T-cells detect rare agonist pMHCs amidst abundant non-agonist ligands, given TCR cross-reactivity and low affinity.
Purpose of the Study:
- To review the multidisciplinary science of T-cell antigen recognition.
- To highlight the role of the immunological synapse and biophysical parameters in T-cell activation.
Main Methods:
- Review of pioneering and recent research in T-cell antigen recognition.
- Integration of findings from genetics, biochemistry, structural biology, biophysics, and molecular imaging.
Main Results:
- T-cell antigen recognition is influenced by intrinsic binding properties and extrinsic cell biological factors like mechanical forces and molecular crowding within the immune synapse.
- The immunological synapse is a critical platform for these molecular interactions.
Conclusions:
- A multidisciplinary approach is essential for a complete understanding of T-cell antigen recognition.
- This field offers a potential roadmap for studying other cell-cell recognition systems.
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