PMID- 33087566 OWN - NLM STAT- MEDLINE DCOM- 20210107 LR - 20240214 IS - 1091-6490 (Electronic) IS - 0027-8424 (Print) IS - 0027-8424 (Linking) VI - 117 IP - 44 DP - 2020 Nov 3 TI - IL-36R signaling integrates innate and adaptive immune-mediated protection against enteropathogenic bacteria. PG - 27540-27548 LID - 10.1073/pnas.2004484117 [doi] AB - Enteropathogenic bacterial infections are a global health issue associated with high mortality, particularly in developing countries. Efficient host protection against enteropathogenic bacterial infection is characterized by coordinated responses between immune and nonimmune cells. In response to infection in mice, innate immune cells are activated to produce interleukin (IL)-23 and IL-22, which promote antimicrobial peptide (AMP) production and bacterial clearance. IL-36 cytokines are proinflammatory IL-1 superfamily members, yet their role in enteropathogenic bacterial infection remains poorly defined. Using the enteric mouse pathogen, C.rodentium, we demonstrate that signaling via IL-36 receptor (IL-36R) orchestrates a crucial innate-adaptive immune link to control bacterial infection. IL-36R-deficient mice (Il1rl2(-/-) ) exhibited significant impairment in expression of IL-22 and AMPs, increased intestinal damage, and failed to contain C. rodentium compared to controls. These defects were associated with failure to induce IL-23 and IL-6, two key IL-22 inducers in the early and late phases of infection, respectively. Treatment of Il1rl2(-/-) mice with IL-23 during the early phase of C. rodentium infection rescued IL-22 production from group 3 innate lymphoid cells (ILCs), whereas IL-6 administration during the late phase rescued IL-22-mediated production from CD4(+) T cell, and both treatments protected Il1rl2(-/-) mice from uncontained infection. Furthermore, IL-36R-mediated IL-22 production by CD4(+) T cells was dependent upon NFkappaB-p65 and IL-6 expression in dendritic cells (DCs), as well as aryl hydrocarbon receptor (AhR) expression by CD4(+) T cells. Collectively, these data demonstrate that the IL-36 signaling pathway integrates innate and adaptive immunity leading to host defense against enteropathogenic bacterial infection. FAU - Ngo, Vu L AU - Ngo VL AD - Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303. FAU - Abo, Hirohito AU - Abo H AD - Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303. FAU - Kuczma, Michal AU - Kuczma M AUID- ORCID: 0000-0003-2310-3590 AD - Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303. FAU - Szurek, Edyta AU - Szurek E AD - Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303. FAU - Moore, Nora AU - Moore N AD - Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303. FAU - Medina-Contreras, Oscar AU - Medina-Contreras O AD - Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303. FAU - Nusrat, Asma AU - Nusrat A AD - Department of Pathology, University of Michigan, Ann Arbor, MI 48109. FAU - Merlin, Didier AU - Merlin D AD - Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303. FAU - Gewirtz, Andrew T AU - Gewirtz AT AD - Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303. FAU - Ignatowicz, Leszek AU - Ignatowicz L AUID- ORCID: 0000-0001-8666-0381 AD - Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303. FAU - Denning, Timothy L AU - Denning TL AD - Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303; tdenning@gsu.edu. LA - eng GR - R01 DK107739/DK/NIDDK NIH HHS/United States GR - R01 DK120907/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20201021 PL - United States TA - Proc Natl Acad Sci U S A JT - Proceedings of the National Academy of Sciences of the United States of America JID - 7505876 RN - 0 (Interleukin-1) RN - 0 (Receptors, Interleukin-1) RN - 0 (interleukin-36 receptor, mouse) RN - 0 (interleukin-36, mouse) SB - IM MH - *Adaptive Immunity MH - Animals MH - Citrobacter rodentium/*immunology/pathogenicity MH - Disease Models, Animal MH - Enterobacteriaceae Infections/*immunology/microbiology MH - *Immunity, Innate MH - Interleukin-1/metabolism MH - Intestinal Mucosa/immunology/metabolism/microbiology MH - Mice MH - Mice, Knockout MH - Receptors, Interleukin-1/genetics/*metabolism MH - Signal Transduction/genetics/immunology PMC - PMC7959549 OTO - NOTNLM OT - adaptive immunity OT - bacterial infection OT - innate immunity OT - interleukin COIS- The authors declare no competing interest. EDAT- 2020/10/23 06:00 MHDA- 2021/01/08 06:00 PMCR- 2021/04/21 CRDT- 2020/10/22 05:29 PHST- 2020/10/23 06:00 [pubmed] PHST- 2021/01/08 06:00 [medline] PHST- 2020/10/22 05:29 [entrez] PHST- 2021/04/21 00:00 [pmc-release] AID - 2004484117 [pii] AID - 202004484 [pii] AID - 10.1073/pnas.2004484117 [doi] PST - ppublish SO - Proc Natl Acad Sci U S A. 2020 Nov 3;117(44):27540-27548. doi: 10.1073/pnas.2004484117. Epub 2020 Oct 21.