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Biochimie. 1987 Apr;69(4):315-20.

Thy-1: a lymphoid cell subset marker capable of delivering an activation signal to mouse T lymphocytes.

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  • 1Centre d'Immunologie INSERM-CNRS de Marseille-Luminy, France.


Monoclonal anti-Thy-1 antibodies are capable of activating mouse T cells in the absence of an antigen-specific signal. Therefore, Thy-1 appears to be connected to an alternative signal transduction pathway, operative in thymocytes as well as in neuronal cells, since this molecule is also present on brain. Biochemical data have shown that this molecule is differentially glycosylated with respect to its cellular distribution. Structure and sequence comparisons revealed a strong homology with the immunoglobulin primordial domain. In addition, the Thy-1 glycoprotein has the particularity of being anchored to the membrane via a glycophospholipid tail. Gene transfer experiments in different cell types have been performed to analyze the mechanism of the Thy-1 pathway of activation.

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