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Use of Single Chain MHC Technology to Investigate Co-agonism in Human CD8+ T Cell Activation

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Lymphocyte activation by Con A.

G Möller, L Hammarström, E Möller

|January 1, 1978

Summary

This summary is machine-generated.

Concanavalin A (Con A) activates T cells, revealing the full T cell repertoire. However, purified T cells require helper cells or serum factors, possibly Ia molecules, for Con A activation.

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Static Adhesion Assay for the Study of Integrin Activation in T Lymphocytes

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Published on: June 13, 2014

Area of Science:

Immunology
Cell Biology

Background:

Concanavalin A (Con A) is known to activate various T cell types, including cytotoxic effector, helper, and suppressor cells.
Con A activation is polyclonal, enabling the study of the entire T cell repertoire.
Nylon-purified T cells typically do not respond to Con A stimulation.

Purpose of the Study:

To investigate the conditions under which Nylon-purified T cells can be activated by Con A.
To identify factors that facilitate Con A-mediated activation of purified T cells.
To propose a hypothesis for T cell activation involving Ia molecules.

Main Methods:

Activation assays using Nylon-purified T cells.
Co-culture experiments with adherent helper cells.
Fractionation of serum to identify activating factors.
Analysis of potential roles of Ia molecules in T cell activation.

Main Results:

Con A activates purified T cells in the presence of helper cells (e.g., adherent cells).
Serum from various species enables Con A activation of purified T cells.
The activating factors in serum are found within the albumin fraction.
Ia molecules are suggested to play a role in Con A activation of purified T cells.

Conclusions:

T cell activation by Con A is dependent on accessory factors when T cells are highly purified.
Serum albumin contains factors crucial for Con A-induced T cell activation.
Ia molecules may be involved in the mechanism of Con A-mediated T cell activation, providing insights into general T cell activation pathways.