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Updated: Aug 9, 2026

A TIRF Microscopy Technique for Real-time, Simultaneous Imaging of the TCR and its Associated Signaling Proteins
16:10

A TIRF Microscopy Technique for Real-time, Simultaneous Imaging of the TCR and its Associated Signaling Proteins

Published on: March 22, 2012

T cell antigen receptor signal transduction pathways

D A Cantrell1

  • 1Lymphocyte Activation Laboratory, Imperial Cancer Research Fund, London.

Cancer Surveys
|January 1, 1996
PubMed

Insights

The T cell antigen receptor (TCR) controls T lymphocyte activation by initiating protein phosphorylation. This process links the TCR to various signaling molecules that ultimately regulate cytokine gene expression and immune responses.

Area of Science:

  • Immunology
  • Molecular Biology
  • Cell Signaling

Background:

  • The T cell antigen receptor (TCR) is crucial for regulating T lymphocyte activation and proliferation.
  • Initial TCR engagement triggers protein tyrosine kinase activation and subsequent protein phosphorylation.

Purpose of the Study:

  • To elucidate the role of TCR signal transduction pathways in immune response regulation.
  • To understand how TCR signaling links to nuclear targets controlling cytokine gene expression.

Main Methods:

  • Review of biochemical and molecular mechanisms of TCR signaling.
  • Analysis of signal transduction pathways downstream of the TCR.
  • Examination of the connection between TCR signaling and transcription factors.

Main Results:

  • TCR activation initiates a cascade of protein phosphorylation events.
  • These events activate diverse signaling molecules, including kinases and GTP-binding proteins.
  • TCR signaling pathways are demonstrated to influence cytokine gene expression.

Conclusions:

  • TCR signaling is a complex network connecting receptor engagement to cellular responses.
  • The pathways discussed are critical for controlling immune responses through cytokine production.
  • Understanding these pathways provides insights into T cell-mediated immunity.

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