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Pezoldt J, Wiechers C, Zou M, Litovchenko M, Biocanin M, Beckstette M, Sitnik K, Palatella M, van Mierlo G, Chen W, Gardeux V, Floess S, Ebel M, Russeil J, Arampatzi P, Vafardanejad E, Saliba AE, Deplancke B, Huehn J. Postnatal expansion of mesenteric lymph node stromal cells towards reticular and CD34 + stromal cell subsets. Nat Commun 2022; 13:7227. [PMID: 36433946 PMCID: PMC9700677 DOI: 10.1038/s41467-022-34868-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Accepted: 11/09/2022] [Indexed: 11/26/2022] Open
Abstract
Gut-draining mesenteric lymph nodes (LN) provide the framework to shape intestinal adaptive immune responses. Based on the transcriptional signatures established by our previous work, the composition and immunomodulatory function of LN stromal cells (SC) vary according to location. Here, we describe the single-cell composition and development of the SC compartment within mesenteric LNs derived from postnatal to aged mice. We identify CD34+ SC and fibroblastic reticular stromal cell (FRC) progenitors as putative progenitors, both supplying the typical rapid postnatal mesenteric LN expansion. We further establish the location-specific chromatin accessibility and DNA methylation landscape of non-endothelial SCs and identify a microbiota-independent core epigenomic signature, showing characteristic differences between SCs from mesenteric and skin-draining peripheral LNs. The epigenomic landscape of SCs points to dynamic expression of Irf3 along the differentiation trajectories of FRCs. Accordingly, a mesenchymal stem cell line acquires a Cxcl9+ FRC molecular phenotype upon lentiviral overexpression of Irf3, and the relevance of Irf3 for SC biology is further underscored by the diminished proportion of Ccl19+ and Cxcl9+ FRCs in LNs of Irf3-/- mice. Together, our data constitute a comprehensive transcriptional and epigenomic map of mesenteric LNSC development in early life and dissect location-specific, microbiota-independent properties of non-endothelial SCs.
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Affiliation(s)
- Joern Pezoldt
- grid.7490.a0000 0001 2238 295XDepartment Experimental Immunology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany ,grid.5333.60000000121839049Laboratory of Systems Biology and Genetics, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Carolin Wiechers
- grid.7490.a0000 0001 2238 295XDepartment Experimental Immunology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany
| | - Mangge Zou
- grid.7490.a0000 0001 2238 295XDepartment Experimental Immunology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany
| | - Maria Litovchenko
- grid.5333.60000000121839049Laboratory of Systems Biology and Genetics, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Marjan Biocanin
- grid.5333.60000000121839049Laboratory of Systems Biology and Genetics, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Michael Beckstette
- grid.7490.a0000 0001 2238 295XDepartment Experimental Immunology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany ,grid.512472.7Department of Computational Biology for Individualised Medicine, Centre for Individualised Infection Medicine, Helmholtz Centre for Infection Research and Hannover Medical School, 30625 Hannover, Germany ,grid.7491.b0000 0001 0944 9128Genome Informatics Group, Bielefeld Institute for Bioinformatics Infrastructure, Department of Technology, Bielefeld University, 33615 Bielefeld, Germany
| | - Katarzyna Sitnik
- grid.6583.80000 0000 9686 6466Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Martina Palatella
- grid.7490.a0000 0001 2238 295XDepartment Experimental Immunology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany
| | - Guido van Mierlo
- grid.5333.60000000121839049Laboratory of Systems Biology and Genetics, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Wanze Chen
- grid.5333.60000000121839049Laboratory of Systems Biology and Genetics, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Vincent Gardeux
- grid.5333.60000000121839049Laboratory of Systems Biology and Genetics, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Stefan Floess
- grid.7490.a0000 0001 2238 295XDepartment Experimental Immunology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany
| | - Maria Ebel
- grid.7490.a0000 0001 2238 295XDepartment Experimental Immunology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany
| | - Julie Russeil
- grid.5333.60000000121839049Laboratory of Systems Biology and Genetics, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Panagiota Arampatzi
- grid.8379.50000 0001 1958 8658Core Unit Systems Medicine, University of Wuerzburg, 97080 Wuerzburg, Germany
| | - Ehsan Vafardanejad
- grid.498164.6Helmholtz Institute for RNA-based Infection Research (HIRI), Helmholtz Center for Infection Research (HZI), 97080 Würzburg, Germany
| | - Antoine-Emmanuel Saliba
- grid.498164.6Helmholtz Institute for RNA-based Infection Research (HIRI), Helmholtz Center for Infection Research (HZI), 97080 Würzburg, Germany
| | - Bart Deplancke
- grid.5333.60000000121839049Laboratory of Systems Biology and Genetics, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Jochen Huehn
- grid.7490.a0000 0001 2238 295XDepartment Experimental Immunology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany ,grid.10423.340000 0000 9529 9877Cluster of Excellence RESIST (EXC 2155), Hannover Medical School, 30625 Hannover, Germany
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2
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Cao H, Diao J, Liu H, Liu S, Liu J, Yuan J, Lin J. The Pathogenicity and Synergistic Action of Th1 and Th17 Cells in Inflammatory Bowel Diseases. Inflamm Bowel Dis 2022; 29:818-829. [PMID: 36166586 DOI: 10.1093/ibd/izac199] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Indexed: 12/09/2022]
Abstract
Inflammatory bowel diseases (IBDs), including ulcerative colitis and Crohn's disease, are characterized by chronic idiopathic inflammation of gastrointestinal tract. Although the pathogenesis of IBD remains unknown, intestinal immune dysfunction has been considered as the core pathogenesis. In the intestinal immune system, T helper 1 (Th1) and Th17 cells are indispensable for intestine homeostasis via preventing pathogenic bacteria invasion, regulating metabolism and functions of intestinal epithelial cells (IECs), and promoting IEC self-renewal. However, during the development of IBD, Th1 and Th17 cells acquire the pathogenicity and change from the maintainer of intestinal homeostasis to the destroyer of intestinal mucosa. Because of coexpressing interferon-γ and interleukin-17A, Th17 cells with pathogenicity are named as pathogenic Th17 cells. In disease states, Th1 cells impair IEC programs by inducing IEC apoptosis, recruiting immune cells, promoting adhesion molecules expression of IECs, and differentiating to epithelial cell adhesion molecule-specific interferon γ-positive Th1 cells. Pathogenic Th17 cells induce IEC injury by triggering IBD susceptibility genes expression of IECs and specifically killing IECs. In addition, Th1 and pathogenic Th17 cells could cooperate to induce colitis. The evidences from IBD patients and animal models demonstrate that synergistic action of Th1 and pathogenic Th17 cells occurs in the diseases development and aggravates the mucosal inflammation. In this review, we focused on Th1 and Th17 cell programs in homeostasis and intestine inflammation and specifically discussed the impact of Th1 and Th17 cell pathogenicity and their synergistic action on the onset and the development of IBD. We hoped to provide some clues for treating IBD.
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Affiliation(s)
- Hui Cao
- Department of Gastroenterology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jun Diao
- Department of Pediatrics, Yueyang Hospital of Chinese Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Huosheng Liu
- Department of Acupuncture and Moxibustion, Shanghai Jiading Hospital of Traditional Chinese Medicine, Shanghai, China
| | - Suxian Liu
- Department of Gastroenterology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jun Liu
- Department of Gastroenterology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jianye Yuan
- Institute of Digestive Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jiang Lin
- Department of Gastroenterology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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3
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Tissue Niches Formed by Intestinal Mesenchymal Stromal Cells in Mucosal Homeostasis and Immunity. Int J Mol Sci 2022; 23:ijms23095181. [PMID: 35563571 PMCID: PMC9100044 DOI: 10.3390/ijms23095181] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/28/2022] [Accepted: 05/04/2022] [Indexed: 12/17/2022] Open
Abstract
The gastrointestinal tract is the largest mucosal surface in our body and accommodates the majority of the total lymphocyte population. Being continuously exposed to both harmless antigens and potentially threatening pathogens, the intestinal mucosa requires the integration of multiple signals for balancing immune responses. This integration is certainly supported by tissue-resident intestinal mesenchymal cells (IMCs), yet the molecular mechanisms whereby IMCs contribute to these events remain largely undefined. Recent studies using single-cell profiling technologies indicated a previously unappreciated heterogeneity of IMCs and provided further knowledge which will help to understand dynamic interactions between IMCs and hematopoietic cells of the intestinal mucosa. In this review, we focus on recent findings on the immunological functions of IMCs: On one hand, we discuss the steady-state interactions of IMCs with epithelial cells and hematopoietic cells. On the other hand, we summarize our current knowledge about the contribution of IMCs to the development of intestinal inflammatory conditions, such as infections, inflammatory bowel disease, and fibrosis. By providing a comprehensive list of cytokines and chemokines produced by IMCs under homeostatic and inflammatory conditions, we highlight the significant immunomodulatory and tissue niche forming capacities of IMCs.
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Zhao X, Tang W, Wan H, Lan Z, Qin H, Lin Q, Hu Y, Yu G, Jiang N, Yu B. Altered Gut Microbiota as an Auxiliary Diagnostic Indicator for Patients With Fracture-Related Infection. Front Microbiol 2022; 13:723791. [PMID: 35495685 PMCID: PMC9048737 DOI: 10.3389/fmicb.2022.723791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 02/16/2022] [Indexed: 12/02/2022] Open
Abstract
Preoperative diagnosis of fracture-related infection (FRI) is difficult for patients without obvious signs of infection. However, specific profiles of gut microbiota may be used as a potential diagnostic tool for FRI as suggested by a previous study. The fecal microbiome was compared between 20 FRI patients (FRI group), 18 fracture healed patients (FH group), and 12 healthy controls (HC group) included after collection of fecal samples and evaluation. The α and β diversity indices were used to characterize the fecal microbiome. Dysbiosis indexes were constructed based on the characteristic high-dimensional biomarkers identified in the fecal microbiota from the three groups by linear discriminant analysis and generalized linear model analysis to quantify the dysbiosis of fecal microbiota. The effectiveness of α and β diversity indices and dysbiosis indexes was assessed in distinguishing the fecal microbiome among the three groups. The influences of serum inflammatory factors on gut microbiota were also addressed. The α diversity indices were significantly different between the three groups, the highest in HC group and the lowest in FRI group (P < 0.05). The β diversity indices showed significant phylogenetic dissimilarity of gut microbiome composition among the three groups (P < 0.001). The dysbiosis indexes were significantly higher in FRI group than in FH and HC groups (P < 0.001). The area under Receiver operating characteristic curve showed the characteristics of gut microbiota and the gut microbiota was found as effective in distinguishing the three groups. The dysbiosis in the FRI patients was associated with systemic inflammatory factors. In addition, significant differences in the gut microbiota were not observed between the FRI patients versus without sinus tract or pus before operation. Since FRI patients, with or without sinus tract or pus, have a characteristic profile of gut microbiota, their gut microbiota may be used as an auxiliary diagnostic tool for suspected FRI.
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Affiliation(s)
- Xingqi Zhao
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Bone and Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Wenli Tang
- Department of Bioinformatics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Haoyang Wan
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Bone and Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zixin Lan
- The Second Clinical Medical College, Southern Medical University, Guangzhou, China
| | - Hanjun Qin
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Bone and Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Qingrong Lin
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Bone and Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yanjun Hu
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Bone and Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Guangchuang Yu
- Department of Bioinformatics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
- *Correspondence: Guangchuang Yu,
| | - Nan Jiang
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Bone and Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
- Nan Jiang,
| | - Bin Yu
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Bone and Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
- Bin Yu,
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Elfaki Y, Yang J, Boehme J, Schultz K, Bruder D, Falk CS, Huehn J, Floess S. Tbx21 and Foxp3 Are Epigenetically Stabilized in T-Bet + Tregs That Transiently Accumulate in Influenza A Virus-Infected Lungs. Int J Mol Sci 2021; 22:ijms22147522. [PMID: 34299148 PMCID: PMC8307036 DOI: 10.3390/ijms22147522] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/02/2021] [Accepted: 07/06/2021] [Indexed: 01/19/2023] Open
Abstract
During influenza A virus (IAV) infections, CD4+ T cell responses within infected lungs mainly involve T helper 1 (Th1) and regulatory T cells (Tregs). Th1-mediated responses favor the co-expression of T-box transcription factor 21 (T-bet) in Foxp3+ Tregs, enabling the efficient Treg control of Th1 responses in infected tissues. So far, the exact accumulation kinetics of T cell subsets in the lungs and lung-draining lymph nodes (dLN) of IAV-infected mice is incompletely understood, and the epigenetic signature of Tregs accumulating in infected lungs has not been investigated. Here, we report that the total T cell and the two-step Treg accumulation in IAV-infected lungs is transient, whereas the change in the ratio of CD4+ to CD8+ T cells is more durable. Within lungs, the frequency of Tregs co-expressing T-bet is steadily, yet transiently, increasing with a peak at Day 7 post-infection. Interestingly, T-bet+ Tregs accumulating in IAV-infected lungs displayed a strongly demethylated Tbx21 locus, similarly as in T-bet+ conventional T cells, and a fully demethylated Treg-specific demethylated region (TSDR) within the Foxp3 locus. In summary, our data suggest that T-bet+ but not T-bet- Tregs are epigenetically stabilized during IAV-induced infection in the lung.
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Affiliation(s)
- Yassin Elfaki
- Department of Experimental Immunology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany; (Y.E.); (J.Y.)
| | - Juhao Yang
- Department of Experimental Immunology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany; (Y.E.); (J.Y.)
| | - Julia Boehme
- Immune Regulation Group, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany; (J.B.); (K.S.); (D.B.)
| | - Kristin Schultz
- Immune Regulation Group, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany; (J.B.); (K.S.); (D.B.)
| | - Dunja Bruder
- Immune Regulation Group, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany; (J.B.); (K.S.); (D.B.)
- Infection Immunology Group, Institute of Medical Microbiology, Infection Control and Prevention, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, 39120 Magdeburg, Germany
| | - Christine S. Falk
- Institute of Transplant Immunology, Hannover Medical School, 30625 Hannover, Germany;
- German Center for Infection Research DZIF, Thematical Translation Unit-Immunocompromized Host (TTU-IICH), Hannover-Braunschweig Site, 30625 Hannover, Germany
| | - Jochen Huehn
- Department of Experimental Immunology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany; (Y.E.); (J.Y.)
- Cluster of Excellence RESIST (EXC 2155), Hannover Medical School, 30625 Hannover, Germany
- Correspondence: (J.H.); (S.F.)
| | - Stefan Floess
- Department of Experimental Immunology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany; (Y.E.); (J.Y.)
- Correspondence: (J.H.); (S.F.)
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6
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Kasinath V, Yilmam OA, Uehara M, Jiang L, Ordikhani F, Li X, Salant DJ, Abdi R. Activation of fibroblastic reticular cells in kidney lymph node during crescentic glomerulonephritis. Kidney Int 2019; 95:310-320. [PMID: 30522766 PMCID: PMC6342621 DOI: 10.1016/j.kint.2018.08.040] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 08/14/2018] [Accepted: 08/23/2018] [Indexed: 01/02/2023]
Abstract
Crescentic glomerulonephritis is an inflammatory condition characterized by rapid deterioration of kidney function. Previous studies of crescentic glomerulonephritis have focused on immune activation in the kidney. However, the role of fibroblastic reticular cells, which reside in the stromal compartment of the kidney lymph node, has not been studied in this condition. We investigated the activation of kidney lymph node-resident fibroblastic reticular cells in nephrotoxic serum nephritis, a classic murine model of crescentic glomerulonephritis. We found that increased deposition of extracellular matrix fibers by fibroblastic reticular cells in the kidney lymph node was associated with the propagation of high endothelial venules, specialized blood vessels through which lymphocytes enter the lymph node, as well as with expansion of the lymphatic vasculature. The kidney lymph node also contained an expanding population of pro-inflammatory T cells. Removal of the kidney lymph node, depletion of fibroblastic reticular cells, and treatment with anti-podoplanin antibody each resulted in reduction of kidney injury. Our findings suggest that modulating the activity of fibroblastic reticular cells may be a novel therapeutic approach in crescentic glomerulonephritis.
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Affiliation(s)
- Vivek Kasinath
- Transplantation Research Center, Brigham and Women's Hospital, Boston, Massachusetts, USA; Division of Renal Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Osman A Yilmam
- Transplantation Research Center, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Mayuko Uehara
- Transplantation Research Center, Brigham and Women's Hospital, Boston, Massachusetts, USA; Division of Renal Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Liwei Jiang
- Transplantation Research Center, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Farideh Ordikhani
- Transplantation Research Center, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Xiaofei Li
- Transplantation Research Center, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - David J Salant
- Renal Section, Boston University Medical Center, Boston, Massachusetts, USA
| | - Reza Abdi
- Transplantation Research Center, Brigham and Women's Hospital, Boston, Massachusetts, USA; Division of Renal Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA.
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7
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Pezoldt J, Pasztoi M, Zou M, Wiechers C, Beckstette M, Thierry GR, Vafadarnejad E, Floess S, Arampatzi P, Buettner M, Schweer J, Fleissner D, Vital M, Pieper DH, Basic M, Dersch P, Strowig T, Hornef M, Bleich A, Bode U, Pabst O, Bajénoff M, Saliba AE, Huehn J. Neonatally imprinted stromal cell subsets induce tolerogenic dendritic cells in mesenteric lymph nodes. Nat Commun 2018; 9:3903. [PMID: 30254319 PMCID: PMC6156403 DOI: 10.1038/s41467-018-06423-7] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 09/02/2018] [Indexed: 01/10/2023] Open
Abstract
Gut-draining mesenteric lymph nodes (mLNs) are important for inducing peripheral tolerance towards food and commensal antigens by providing an optimal microenvironment for de novo generation of Foxp3+ regulatory T cells (Tregs). We previously identified microbiota-imprinted mLN stromal cells as a critical component in tolerance induction. Here we show that this imprinting process already takes place in the neonatal phase, and renders the mLN stromal cell compartment resistant to inflammatory perturbations later in life. LN transplantation and single-cell RNA-seq uncover stably imprinted expression signatures in mLN fibroblastic stromal cells. Subsetting common stromal cells across gut-draining mLNs and skin-draining LNs further refine their location-specific immunomodulatory functions, such as subset-specific expression of Aldh1a2/3. Finally, we demonstrate that mLN stromal cells shape resident dendritic cells to attain high Treg-inducing capacity in a Bmp2-dependent manner. Thus, crosstalk between mLN stromal and resident dendritic cells provides a robust regulatory mechanism for the maintenance of intestinal tolerance.
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Affiliation(s)
- Joern Pezoldt
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Maria Pasztoi
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Mangge Zou
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Carolin Wiechers
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Michael Beckstette
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Guilhem R Thierry
- CNRS, INSERM, CIML, Aix Marseille University, 13284, Marseille, France
| | - Ehsan Vafadarnejad
- Helmholtz Institute for RNA-based Infection Research, 97080, Wuerzburg, Germany
| | - Stefan Floess
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Panagiota Arampatzi
- Core Unit Systems Medicine, University of Wuerzburg, 97080, Wuerzburg, Germany
| | - Manuela Buettner
- Institute of Functional and Applied Anatomy, Hannover Medical School, 30625, Hannover, Germany.,Institute for Laboratory Animal Science and Central Animal Facility, Hannover Medical School, 30625, Hannover, Germany
| | - Janina Schweer
- Department Molecular Infection Biology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Diana Fleissner
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Marius Vital
- Research Group Microbial Interactions and Processes, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Dietmar H Pieper
- Research Group Microbial Interactions and Processes, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Marijana Basic
- Institute for Laboratory Animal Science and Central Animal Facility, Hannover Medical School, 30625, Hannover, Germany
| | - Petra Dersch
- Department Molecular Infection Biology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Till Strowig
- Research Group Microbial Immune Regulation, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Mathias Hornef
- Institute of Medical Microbiology, RWTH Aachen, 52074, Aachen, Germany
| | - André Bleich
- Institute for Laboratory Animal Science and Central Animal Facility, Hannover Medical School, 30625, Hannover, Germany
| | - Ulrike Bode
- Institute of Functional and Applied Anatomy, Hannover Medical School, 30625, Hannover, Germany
| | - Oliver Pabst
- Institute of Molecular Medicine, RWTH Aachen, 52074, Aachen, Germany
| | - Marc Bajénoff
- CNRS, INSERM, CIML, Aix Marseille University, 13284, Marseille, France
| | | | - Jochen Huehn
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany.
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8
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Blanquiceth Y, Rodríguez-Perea AL, Tabares Guevara JH, Correa LA, Sánchez MD, Ramírez-Pineda JR, Velilla PA. Increase of Frequency and Modulation of Phenotype of Regulatory T Cells by Atorvastatin Is Associated with Decreased Lung Inflammatory Cell Infiltration in a Murine Model of Acute Allergic Asthma. Front Immunol 2016; 7:620. [PMID: 28066430 PMCID: PMC5174085 DOI: 10.3389/fimmu.2016.00620] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 12/06/2016] [Indexed: 01/24/2023] Open
Abstract
Regulatory T cells (Tregs) play an important role by controlling allergic inflammation of airways. Recently, it has been shown that statins have immunomodulatory properties, probably mediated by their effects on Tregs. Therefore, we evaluated the in vivo effect of atorvastatin (ATV) on Tregs and its association with the inflammatory process in a model of allergic asthma. BALB/c mice were sensitized with ovalbumin (OVA) and then challenged with intranasal OVA. ATV (40 mg/kg) was delivered by daily intraperitoneal injection for 7 or 15 days before each OVA challenge. ATV treatment for 7 days increased the frequency of Tregs in mediastinal lymph nodes (MLN) and the interleukin (IL)-10 in lungs. After 15 days of treatment, ATV increased the percentage of glucocorticoid-induced tumor necrosis factor receptor-related protein (GITR+) and programmed cell death protein 1 (PD-1+) Tregs in the lung, without enhancing their suppressive activity, but also increased the percentage of conventional T cells expressing GITR+, PD1+, and OX-40 (tumor necrosis factor receptor superfamily member 4). Although no significant changes were observed in the number of inflammatory cells in the bronchoalveolar lavage (BAL), OVA-specific immunoglobulin E in the serum, and type 2 helper (Th2) cytokines in the lungs, there was a significant decrease of peribronchial inflammation that negatively correlated with the Tregs in MLN and the concentration of IL-10 in the lung. These results suggest that ATV has an immunomodulatory role possibly mediated by their effects on Tregs, which could contribute to the control of inflammation during allergic asthma. Further studies are necessary to elucidate the contribution of Treg to immunomodulatory action of statins in the context of allergic asthma.
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Affiliation(s)
- Yurany Blanquiceth
- Grupo Inmunovirología, Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad de Antioquia UdeA , Medellín , Colombia
| | - Ana Lucia Rodríguez-Perea
- Grupo Inmunovirología, Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad de Antioquia UdeA , Medellín , Colombia
| | - Jorge H Tabares Guevara
- Grupo Inmunomodulación, Facultad de Medicina, Universidad de Antioquia UdeA , Medellín , Colombia
| | - Luis Alfonso Correa
- Sección de Dermatología, Departamento de Medicina, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia; Laboratorio de Patología, Laboratorio Clínico VID, Obra de la Congregación Mariana, Medellín, Colombia
| | - María Dulfary Sánchez
- Stanley S. Scott Cancer Center & Louisiana Cancer Research Center, Health Sciences Center, Louisiana State University , New Orleans, LA , USA
| | | | - Paula Andrea Velilla
- Grupo Inmunovirología, Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad de Antioquia UdeA , Medellín , Colombia
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