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Updated: Jun 3, 2026

Single-Molecule Localization Microscopy of Membrane Proteins using Single-Antibody Labeling

Single-Molecule Localization Microscopy of Membrane Proteins using Single-Antibody Labeling

Published on: March 20, 2026

Tetraspanins in cellular immunity.

Eleanor Livingston Jones¹, Maria C Demaria, Mark D Wright

¹Leucocyte Membrane Protein Laboratory, Department of Immunology, Monash University, Alfred Medical Research and Education Precinct, Melbourne, Victoria 3004, Australia.

Biochemical Society Transactions

|March 25, 2011

Summary

This summary is machine-generated.

Tetraspanins are key membrane proteins regulating cell surface interactions crucial for immune responses. Studies show their involvement in innate and adaptive immunity, impacting T-cell proliferation and antigen presentation.

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Area of Science:

Immunology
Cell Biology
Molecular Biology

Background:

Tetraspanins are integral membrane proteins organizing cell surface microdomains.
These microdomains regulate molecular recognition and signal transduction essential for immune responses.
Both immune-cell-specific (e.g., CD37) and ubiquitous (e.g., CD81) tetraspanins influence immunity.

Purpose of the Study:

To summarize the role of tetraspanins in innate and adaptive cellular immunity.
To highlight tetraspanin interactions with key immune molecules.
To review findings from tetraspanin-deficient mouse models and recent studies on specific immune cells.

Main Methods:

Review of existing literature on tetraspanin function in immunity.
Analysis of molecular interactions between tetraspanins and immune cell surface/cytoplasmic molecules.
Examination of data from tetraspanin-deficient mouse models.

Main Results:

Tetraspanins regulate molecular recognition and signal transduction in immune cells.
They interact with MHC proteins, T-cell co-receptors (CD4, CD8), Lck, and PKC.
Tetraspanins are implicated in pattern recognition, antigen presentation, T-cell proliferation, and function in macrophages, NK cells, and granulocytes.

Conclusions:

Tetraspanins are critical regulators of both innate and adaptive immunity.
Their diverse roles underscore their importance in immune cell function and regulation.
Further research continues to reveal novel functions in various immune cell types.