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TGF-beta and immune evasion

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Contact

Julien  C. Marie, PhD



julien.marie@inserm.fr
Int + 33 4 26 55 67 48

 

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German Cancer Research Center

Objectifs

The immune system has to be ignorant against the self-cells to avoid autoimmunity, but it should also be able to eliminate the self-cells that are noxious for the organism such as tumor cells.  Transforming Growth Factor beta (TGF-β) is a master regulatory cytokine of the immune system. Interestingly, this cytokine is highly produced by the tumor micro-environment and it is known to contribute also to tumor growth. We revealed that within the immune system the target-cells of the regulatory effects of TGF-β are T lymphocytes and that TGF-β signaling represses their activation against self-cells. Our lab now studies the molecular and cellular mechanisms responsible for the control of peripheral T cell tolerance to self-cells by TGF-β and analyses their effects on autoimmune diseases and tumor growth.