6533b851fe1ef96bd12a8eb2
RESEARCH PRODUCT
Ribosome-Targeting Antibiotics Impair T Cell Effector Function and Ameliorate Autoimmunity by Blocking Mitochondrial Protein Synthesis
J BartelRolf MüllerTim SparwasserTim SparwasserSven DennerleinSaskia LippensLeif SchauserGuilhermina M. CarricheGuilhermina M. CarricheChristina HesseN AyeleMarkus KalesseMelanie GuderianLuis F. MoitaLuís AlmeidaLuís AlmeidaBruce R. BlazarCarla N. CastroAyesha Dhillon-labrooyAyesha Dhillon-labrooyBart N. Lambrechtsubject
0301 basic medicineMitochondrial translationmedicine.medical_treatmentT-LymphocytesCellMitochondrionmedicine.disease_causeRibosomemitochondrial translationOxidative PhosphorylationantibioticsAutoimmunityACTIVATIONMice0302 clinical medicineribosome-targetingMedicine and Health SciencesImmunology and AllergyTRANSCRIPTION FACTORMolecular Targeted TherapyMice Knockout0303 health sciencesEffectorExperimental autoimmune encephalomyelitisautoimmunityCell DifferentiationPeptide Elongation Factor GAnti-Bacterial Agents3. Good healthCell biologymitochondriaInfectious DiseasesCytokinemedicine.anatomical_structureRESPIRATION030220 oncology & carcinogenesisEncephalomyelitis Autoimmune ExperimentalMultiple SclerosisT cellImmunologyINHIBITIONT cellsBiologyOXAZOLIDINONEPeptides CyclicArticleMitochondrial Proteins03 medical and health sciencesNAD+medicineAnimalsHumanselongation factor G1030304 developmental biologyAutoimmune diseaseBacteriaLinezolidBiology and Life SciencesPATHWAYSDNANADmedicine.diseaseIn vitroMice Inbred C57BL030104 developmental biologyTh17 CellsArgyrinCHLORAMPHENICOLMEMBRANERibosomesdescription
Summary While antibiotics are intended to specifically target bacteria, most are known to affect host cell physiology. In addition, some antibiotic classes are reported as immunosuppressive for reasons that remain unclear. Here, we show that Linezolid, a ribosomal-targeting antibiotic (RAbo), effectively blocked the course of a T cell-mediated autoimmune disease. Linezolid and other RAbos were strong inhibitors of T helper-17 cell effector function in vitro, showing that this effect was independent of their antibiotic activity. Perturbing mitochondrial translation in differentiating T cells, either with RAbos or through the inhibition of mitochondrial elongation factor G1 (mEF-G1) progressively compromised the integrity of the electron transport chain. Ultimately, this led to deficient oxidative phosphorylation, diminishing nicotinamide adenine dinucleotide concentrations and impairing cytokine production in differentiating T cells. In accordance, mice lacking mEF-G1 in T cells were protected from experimental autoimmune encephalomyelitis, demonstrating that this pathway is crucial in maintaining T cell function and pathogenicity.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-11-06 | Immunity |