PMID- 31967646 OWN - NLM STAT- MEDLINE DCOM- 20201106 LR - 20201106 IS - 1540-9538 (Electronic) IS - 0022-1007 (Print) IS - 0022-1007 (Linking) VI - 217 IP - 4 DP - 2020 Apr 6 TI - Transcriptional profiling identifies caspase-1 as a T cell-intrinsic regulator of Th17 differentiation. LID - 10.1084/jem.20190476 [doi] LID - e20190476 AB - Dendritic cells (DCs) are critical for the differentiation of pathogen-specific CD4 T cells. However, to what extent innate cues from DCs dictate transcriptional changes in T cells remains elusive. Here, we used DCs stimulated with specific pathogens to prime CD4 T cells in vitro and found that these T cells express unique transcriptional profiles dictated by the nature of the priming pathogen. More specifically, the transcriptome of in vitro C. rodentium-primed Th17 cells resembled that of Th17 cells primed following infection in vivo but was remarkably distinct from cytokine-polarized Th17 cells. We identified caspase-1 as a unique gene up-regulated only in pathogen-primed Th17 cells and discovered a critical role for T cell-intrinsic caspase-1, independent of inflammasome, in optimal priming of Th17 responses. T cells lacking caspase-1 failed to induce colitis or confer protection against C. rodentium infection due to suboptimal Th17 cell differentiation in vivo. This study underlines the importance of DC-mediated priming in identifying novel regulators of T cell differentiation. CI - (c) 2020 Gao et al. FAU - Gao, Yajing AU - Gao Y AD - Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX. AD - Immunology Graduate Program, University of Texas Southwestern Medical Center, Dallas, TX. FAU - Deason, Krystin AU - Deason K AD - Immunology Graduate Program, University of Texas Southwestern Medical Center, Dallas, TX. FAU - Jain, Aakanksha AU - Jain A AD - Division of Immunobiology, Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center, Cincinnati, OH. AD - Immunology Graduate Program, University of Texas Southwestern Medical Center, Dallas, TX. FAU - Irizarry-Caro, Ricardo A AU - Irizarry-Caro RA AD - Division of Immunobiology, Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center, Cincinnati, OH. AD - Immunology Graduate Program, University of Texas Southwestern Medical Center, Dallas, TX. FAU - Dozmorov, Igor AU - Dozmorov I AD - Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX. FAU - Coughlin, Laura A AU - Coughlin LA AD - Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX. FAU - Rauch, Isabella AU - Rauch I AD - Department of Molecular Microbiology and Immunology, Oregon Health & Science University, Portland, OR. FAU - Evers, Bret M AU - Evers BM AD - Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX. FAU - Koh, Andrew Y AU - Koh AY AD - Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX. AD - Harold C. Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX. AD - Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX. FAU - Wakeland, Edward K AU - Wakeland EK AD - Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX. FAU - Pasare, Chandrashekhar AU - Pasare C AD - Division of Immunobiology, Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center, Cincinnati, OH. AD - Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH. LA - eng GR - R01 AI113125/AI/NIAID NIH HHS/United States GR - R01 AI123176/AI/NIAID NIH HHS/United States GR - R01 GM120196/GM/NIGMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - J Exp Med JT - The Journal of experimental medicine JID - 2985109R RN - 0 (Cytokines) RN - 0 (Inflammasomes) RN - EC 3.4.22.36 (Casp1 protein, mouse) RN - EC 3.4.22.36 (Caspase 1) SB - IM MH - Animals MH - Caspase 1/*genetics MH - Cell Differentiation/*genetics MH - Cell Line, Tumor MH - Cell Polarity MH - Citrobacter rodentium MH - Colitis/genetics/metabolism MH - Cytokines/metabolism MH - Dendritic Cells/metabolism MH - Enterobacteriaceae Infections/metabolism/microbiology MH - Female MH - Gene Knockout Techniques MH - Inflammasomes/metabolism MH - Lymphocyte Activation/genetics MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Th17 Cells/*metabolism/*microbiology MH - Transcription, Genetic/*genetics MH - Transcriptome PMC - PMC7144520 COIS- Disclosures: The authors declare no competing interests exist. EDAT- 2020/01/23 06:00 MHDA- 2020/11/11 06:00 PMCR- 2020/10/06 CRDT- 2020/01/23 06:00 PHST- 2019/03/15 00:00 [received] PHST- 2019/10/07 00:00 [revised] PHST- 2019/12/09 00:00 [accepted] PHST- 2020/01/23 06:00 [entrez] PHST- 2020/01/23 06:00 [pubmed] PHST- 2020/11/11 06:00 [medline] PHST- 2020/10/06 00:00 [pmc-release] AID - 133631 [pii] AID - jem.20190476 [pii] AID - 10.1084/jem.20190476 [doi] PST - ppublish SO - J Exp Med. 2020 Apr 6;217(4):e20190476. doi: 10.1084/jem.20190476.