Intrinsic antiproliferative activity of the innate sensor STING in T lymphocytes.
Silvia CerboniNadia JeremiahMatteo GentiliUlf GehrmannCécile ConradMarie-Claude StolzenbergCapucine PicardBénédicte NevenAlain FischerSebastian AmigorenaFrédéric Rieux-LaucatNicolas ManelPublished in: The Journal of experimental medicine (2017)
Activation of the cyclic dinucleotide sensor stimulator of interferon (IFN) genes (STING) is critical for IFN and inflammatory gene expression during innate immune responses. However, the role of STING in adaptive immunity is still unknown. In this study, we show that STING activation reduces the proliferation of T lymphocytes. This activity was independent of TBK1 and IRF3 recruitment and of type I IFN but required a distinct C-terminal domain of STING that activates NF-κB. Inhibition of cell proliferation by STING required its relocalization to the Golgi apparatus and caused mitotic errors. T lymphocytes from patients carrying constitutive active mutations in TMEM173 encoding STING showed impaired proliferation and reduced numbers of memory cells. Endogenous STING inhibited proliferation of mouse T lymphocytes. Therefore, STING, a critical innate sensor, also functions intrinsically in cells of the adaptive immune system to inhibit proliferation.
Keyphrases
- immune response
- signaling pathway
- dendritic cells
- gene expression
- induced apoptosis
- cell proliferation
- oxidative stress
- cell cycle arrest
- end stage renal disease
- pi k akt
- dna methylation
- emergency department
- newly diagnosed
- chronic kidney disease
- working memory
- ejection fraction
- cell death
- patient safety
- prognostic factors
- nuclear factor