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Autophagy enforces functional integrity of regulatory T cells by coupling environmental cues and metabolic homeostasis

GSE75218 Mus musculus Expression profiling by array 16 samples Submitted 2016/01/25 Platform GPL16570
Summary
Regulatory T (Treg) cells respond to immune and inflammatory signals to mediate immunosuppression, but how the functional integrity of Treg cells is maintained under activating environments is unclear. Here we show that autophagy is active in Treg cells and supports their lineage stability and survival fitness. Treg cell–specific deletion of Atg7 or Atg5, both essential genes in autophagy, leads to loss of Treg cells, greater tumor resistance and development of inflammatory disorders. Atg7-deficient Treg cells show increased apoptosis and readily lose expression of the transcription factor Foxp3, especially after activation. Mechanistically, autophagy deficiency upregulates mTORC1 and c-Myc and glycolytic metabolism, which contributes to defective Treg function. Therefore, autophagy couples environmental signals and metabolic homeostasis to protect lineage and survival integrity of Treg cells in activating contexts.
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Also filed as BioProject PRJNA302814. Searching any of these in the dataset finder brings you back here.

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