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Related Experiment Video

Updated: May 31, 2026

Imaging Initial Ca2+ Microdomains in Primary T Cells

Imaging Initial Ca²⁺ Microdomains in Primary T Cells

Published on: October 4, 2024

Calcium signalling in T-lymphocytes.

V Robert¹, E Triffaux, M Savignac

¹INSERM U1043, Centre de Physiopathologie de Toulouse Purpan, France.

|June 30, 2011

Summary

This summary is machine-generated.

Calcium signalling is crucial for T-cell functions. This review highlights the role of voltage-dependent calcium (Ca(v)1) channels, particularly their upregulation in Th2 lymphocytes involved in allergic diseases.

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Area of Science:

Immunology
Cell Biology
Physiology

Background:

Calcium signalling is vital for T-cell receptor (TCR) engagement and subsequent cellular activities.
Th2 lymphocytes, implicated in allergic diseases, produce key interleukins (IL-4, IL-5, IL-13).
Intracellular calcium release is initiated by inositol trisphosphate binding to its receptor, while STIM proteins sense store depletion and activate ORAI channels.

Purpose of the Study:

To review the diversity of calcium channels involved in T-cell calcium homeostasis.
To discuss the role and gating mechanisms of voltage-dependent calcium (Ca(v)1) channels in non-excitable T-cells.
To explore the selective upregulation of Ca(v)1 channels in Th2 lymphocytes.

Main Methods:

Literature review focusing on calcium signalling pathways in T-cells.
Analysis of studies investigating calcium channel expression and function.
Discussion of the interplay between different calcium channels in effector T-cell subsets.

Main Results:

STIM and ORAI proteins are key players in TCR-induced calcium influx.
Voltage-dependent calcium (Ca(v)1) channels contribute to intracellular calcium rise in T-cells.
Ca(v)1 channel expression is specifically increased in Th2 lymphocytes.

Conclusions:

A variety of calcium channels contribute to calcium homeostasis in different T-cell subsets.
The interactions among these channels dictate diverse calcium responses essential for effector T-cell functions.
Understanding Ca(v)1 channel regulation in Th2 cells may offer insights into allergic disease mechanisms.