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Williams CG, Moreira ML, Asatsuma T, Lee HJ, Li S, Barrera I, Murray E, Soon MSF, Engel JA, Khoury DS, Le S, Wanrooy BJ, Schienstock D, Alexandre YO, Skinner OP, Joseph R, Beattie L, Mueller SN, Chen F, Haque A. Plasmodium infection induces phenotypic, clonal, and spatial diversity among differentiating CD4 + T cells. Cell Rep 2024; 43:114317. [PMID: 38848213 DOI: 10.1016/j.celrep.2024.114317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 04/21/2024] [Accepted: 05/20/2024] [Indexed: 06/09/2024] Open
Abstract
Naive CD4+ T cells must differentiate in order to orchestrate immunity to Plasmodium, yet understanding of their emerging phenotypes, clonality, spatial distributions, and cellular interactions remains incomplete. Here, we observe that splenic polyclonal CD4+ T cells differentiate toward T helper 1 (Th1) and T follicular helper (Tfh)-like states and exhibit rarer phenotypes not elicited among T cell receptor (TCR) transgenic counterparts. TCR clones present at higher frequencies exhibit Th1 skewing, suggesting that variation in major histocompatibility complex class II (MHC-II) interaction influences proliferation and Th1 differentiation. To characterize CD4+ T cell interactions, we map splenic microarchitecture, cellular locations, and molecular interactions using spatial transcriptomics at near single-cell resolution. Tfh-like cells co-locate with stromal cells in B cell follicles, while Th1 cells in red pulp co-locate with activated monocytes expressing multiple chemokines and MHC-II. Spatial mapping of individual transcriptomes suggests that proximity to chemokine-expressing monocytes correlates with stronger effector phenotypes in Th1 cells. Finally, CRISPR-Cas9 gene disruption reveals a role for CCR5 in promoting clonal expansion and Th1 differentiation. A database of cellular locations and interactions is presented: https://haquelab.mdhs.unimelb.edu.au/spatial_gui/.
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Affiliation(s)
- Cameron G Williams
- Department of Microbiology and Immunology, University of Melbourne, located at the Peter Doherty Institute for Infection and Immunity, Parkville, VIC 3000, Australia
| | - Marcela L Moreira
- Department of Microbiology and Immunology, University of Melbourne, located at the Peter Doherty Institute for Infection and Immunity, Parkville, VIC 3000, Australia
| | - Takahiro Asatsuma
- Department of Microbiology and Immunology, University of Melbourne, located at the Peter Doherty Institute for Infection and Immunity, Parkville, VIC 3000, Australia
| | - Hyun Jae Lee
- Department of Microbiology and Immunology, University of Melbourne, located at the Peter Doherty Institute for Infection and Immunity, Parkville, VIC 3000, Australia
| | - Shihan Li
- Department of Microbiology and Immunology, University of Melbourne, located at the Peter Doherty Institute for Infection and Immunity, Parkville, VIC 3000, Australia
| | - Irving Barrera
- Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA
| | - Evan Murray
- Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA
| | - Megan S F Soon
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia
| | - Jessica A Engel
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia
| | - David S Khoury
- Kirby Institute, University of New South Wales, Kensington, NSW 2052, Australia
| | - Shirley Le
- Department of Microbiology and Immunology, University of Melbourne, located at the Peter Doherty Institute for Infection and Immunity, Parkville, VIC 3000, Australia
| | - Brooke J Wanrooy
- Department of Microbiology and Immunology, University of Melbourne, located at the Peter Doherty Institute for Infection and Immunity, Parkville, VIC 3000, Australia
| | - Dominick Schienstock
- Department of Microbiology and Immunology, University of Melbourne, located at the Peter Doherty Institute for Infection and Immunity, Parkville, VIC 3000, Australia
| | - Yannick O Alexandre
- Department of Microbiology and Immunology, University of Melbourne, located at the Peter Doherty Institute for Infection and Immunity, Parkville, VIC 3000, Australia
| | - Oliver P Skinner
- Department of Microbiology and Immunology, University of Melbourne, located at the Peter Doherty Institute for Infection and Immunity, Parkville, VIC 3000, Australia
| | - Rainon Joseph
- Department of Microbiology and Immunology, University of Melbourne, located at the Peter Doherty Institute for Infection and Immunity, Parkville, VIC 3000, Australia
| | - Lynette Beattie
- Department of Microbiology and Immunology, University of Melbourne, located at the Peter Doherty Institute for Infection and Immunity, Parkville, VIC 3000, Australia
| | - Scott N Mueller
- Department of Microbiology and Immunology, University of Melbourne, located at the Peter Doherty Institute for Infection and Immunity, Parkville, VIC 3000, Australia
| | - Fei Chen
- Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA
| | - Ashraful Haque
- Department of Microbiology and Immunology, University of Melbourne, located at the Peter Doherty Institute for Infection and Immunity, Parkville, VIC 3000, Australia.
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Zhang T, Fu W, Liu D, He Y, Wang J, Ma T. ADENOSINE INFLUENCES FOXP3 EXPRESSION OF T REGS VIA THE A2AR/CREB PATHWAY IN A MOUSE MODEL OF SEPSIS. Shock 2024; 61:924-933. [PMID: 38010286 DOI: 10.1097/shk.0000000000002281] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
ABSTRACT The adenosine concentration and forkhead box protein (Foxp3) expression in T regulatory cells (T regs ) are increased during sepsis. However, the mechanism by which adenosine induces Foxp3 expression is incompletely understood. A cecal ligation and puncture (CLP) model was constructed using C57BL/J mice. The plasma adenosine concentration and Foxp3 expression in splenic T regs were increased consistently for 15 days after sepsis onset. Analysis of the mean fluorescence intensity of Foxp3 and adenosine concentration in the same mice revealed a linear correlation. In the CLP model, adenosine 2a receptor (A2aR) blockade inhibited Foxp3 expression in T regs . In vitro activation of A2aR promoted Foxp3 expression in T regs and facilitated secretion of extracellular vesicles. Transcriptome sequencing revealed that A2aR blockade led to changes in cyclic adenosine monophosphate response element-binding protein (CREB) transcription in T regs in our sepsis model. Use of adenosine or A2aR agonists promoted CREB expression, CREB phosphorylation at S133, T reg expression of Foxp3, and enhanced inhibition of proliferation of cluster of differentiation (CD)4+ lymphocytes. A2aR blockade or inhibition of CREB expression inhibited Foxp3 expression in T regs . In the CLP model, use of CREB inhibitors could inhibit Foxp3 expression and reduce the bacterial load. In summary, adenosine in sepsis promotes CREB phosphorylation via A2aR which, in turn, upregulates Foxp3 expression in T regs .
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Affiliation(s)
- Teng Zhang
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
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Biswas N, Bahr A, Howard J, Bonin JL, Grazda R, MacNamara KC. Survivors of polymicrobial sepsis are refractory to G-CSF-induced emergency myelopoiesis and hematopoietic stem and progenitor cell mobilization. Stem Cell Reports 2024; 19:639-653. [PMID: 38608679 PMCID: PMC11103789 DOI: 10.1016/j.stemcr.2024.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 03/15/2024] [Accepted: 03/18/2024] [Indexed: 04/14/2024] Open
Abstract
Sepsis survivors exhibit immune dysfunction, hematological changes, and increased risk of infection. The long-term impacts of sepsis on hematopoiesis were analyzed using a surgical model of murine sepsis, resulting in 50% survival. During acute disease, phenotypic hematopoietic stem and progenitor cells (HSPCs) were reduced in the bone marrow (BM), concomitant with increased myeloid colony-forming units and extramedullary hematopoiesis. Upon recovery, BM HSPCs were increased and exhibited normal function in the context of transplantation. To evaluate hematopoietic responses in sepsis survivors, we treated recovered sham and cecal ligation and puncture mice with a mobilizing regimen of granulocyte colony-stimulating factor (G-CSF) at day 20 post-surgery. Sepsis survivors failed to undergo emergency myelopoiesis and HSPC mobilization in response to G-CSF administration. G-CSF is produced in response to acute infection and injury to expedite the production of innate immune cells; therefore, our findings contribute to a new understanding of how sepsis predisposes to subsequent infection.
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Affiliation(s)
- Nirupam Biswas
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, NY 12208, USA
| | - Amber Bahr
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, NY 12208, USA
| | - Jennifer Howard
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, NY 12208, USA
| | - Jesse L Bonin
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, NY 12208, USA
| | - Rachel Grazda
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, NY 12208, USA
| | - Katherine C MacNamara
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, NY 12208, USA.
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Lassoued N, Yero A, Jenabian MA, Soret R, Pilon N. Efficient enzyme-free method to assess the development and maturation of the innate and adaptive immune systems in the mouse colon. Sci Rep 2024; 14:11063. [PMID: 38744932 PMCID: PMC11094196 DOI: 10.1038/s41598-024-61834-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 05/10/2024] [Indexed: 05/16/2024] Open
Abstract
Researchers who aim to globally analyze the gastrointestinal immune system via flow cytometry have many protocol options to choose from, with specifics generally tied to gut wall layers of interest. To get a clearer idea of the approach we should use on full-thickness colon samples from mice, we first undertook a systematic comparison of three tissue dissociation techniques: two based on enzymatic cocktails and the other one based on manual crushing. Using flow cytometry panels of general markers of lymphoid and myeloid cells, we found that the presence of cell-surface markers and relative cell population frequencies were more stable with the mechanical method. Both enzymatic approaches were associated with a marked decrease of several cell-surface markers. Using mechanical dissociation, we then developed two minimally overlapping panels, consisting of a total of 26 antibodies, for serial profiling of lymphoid and myeloid lineages from the mouse colon in greater detail. Here, we highlight how we accurately delineate these populations by manual gating, as well as the reproducibility of our panels on mouse spleen and whole blood. As a proof-of-principle of the usefulness of our general approach, we also report segment- and life stage-specific patterns of immune cell profiles in the colon. Overall, our data indicate that mechanical dissociation is more suitable and efficient than enzymatic methods for recovering immune cells from all colon layers at once. Additionally, our panels will provide researchers with a relatively simple tool for detailed immune cell profiling in the murine gastrointestinal tract, regardless of life stage or experimental conditions.
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Affiliation(s)
- Nejia Lassoued
- Molecular Genetics of Development Laboratory, Department of Biological Sciences, Université du Québec à Montréal, Montreal, QC, Canada
- Centre d'excellence en recherche sur les maladies orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal, Montreal, QC, Canada
| | - Alexis Yero
- Centre d'excellence en recherche sur les maladies orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal, Montreal, QC, Canada
- Human Immuno-Virology Laboratory, Department of Biological Sciences, Université du Québec à Montréal, Montreal, QC, Canada
| | - Mohammad-Ali Jenabian
- Centre d'excellence en recherche sur les maladies orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal, Montreal, QC, Canada
- Human Immuno-Virology Laboratory, Department of Biological Sciences, Université du Québec à Montréal, Montreal, QC, Canada
| | - Rodolphe Soret
- Molecular Genetics of Development Laboratory, Department of Biological Sciences, Université du Québec à Montréal, Montreal, QC, Canada.
- Centre d'excellence en recherche sur les maladies orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal, Montreal, QC, Canada.
| | - Nicolas Pilon
- Molecular Genetics of Development Laboratory, Department of Biological Sciences, Université du Québec à Montréal, Montreal, QC, Canada.
- Centre d'excellence en recherche sur les maladies orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal, Montreal, QC, Canada.
- Department of Pediatrics, Université de Montréal, Montreal, QC, Canada.
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5
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Ye K, Lin X, Chen TZ, Wang LH, Liu SX. Heparin-Binding Protein Promotes Acute Lung Injury in Sepsis Mice by Blocking the Aryl Hydrocarbon Receptor Signaling Pathway. J Inflamm Res 2024; 17:2927-2938. [PMID: 38764496 PMCID: PMC11100518 DOI: 10.2147/jir.s454777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 04/25/2024] [Indexed: 05/21/2024] Open
Abstract
Purpose This study aimed to explore the therapeutic effect and potential mechanism of heparin-binding protein (HBP) reduction on sepsis-related acute lung injury. Methods We utilized a murine model of sepsis-induced by intraperitoneal injection of lipopolysaccharides (LPS) in C57BL/6J mice divided into four groups: Control, LPS, Anti-HBP, and ceftriaxone (CEF). Following sepsis induction, Anti-HBP or CEF treatments were administered, and survival rates were monitored for 48 h. We then used reverse-transcription quantitative PCR to analyze the expression levels of HBP in lung tissues, immunohistochemistry for protein localization, and Western blotting for protein quantification. Pulmonary inflammation was assessed using enzyme-linked immunosorbent assays of proinflammatory cytokines (tumor necrosis factor-α, interleukin [IL]-1β, IL-6, and interferon-γ). The activation state of the aryl hydrocarbon receptor (AhR) signaling pathway was determined via Western blotting, evaluating both cytoplasmic and nuclear localization of AhR and the expression of cytochrome P450 1A1 protein by its target gene. Results Anti-HBP specifically reduced HBP levels. The survival rate of mice in the Anti-HBP and CEF groups was much higher than that in the LPS group. The severity of lung injury and pulmonary inflammatory response in the Anti-HBP and CEF groups was significantly lower than that in the LPS group. AhR signaling pathway activation was observed in the Anti-HBP and CEF groups. Additionally, there was no significant difference in the above indices between the Anti-HBP and CEF groups. Conclusion HBP downregulation in lung tissues significantly improved LPS-induced lung injury and the pulmonary inflammatory response, thereby prolonging the survival of sepsis mice, suggesting activation of the AhR signaling pathway. Moreover, the effect of lowering the HBP level was equivalent to that of the classical antibiotic CEF. Trial Registration Not applicable.
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Affiliation(s)
- Kun Ye
- Department of Orthopaedics, Qiantang Campus of Sir Run Run Shaw Hospital, Medical College of Zhejiang University, Hangzhou, Zhejiang, 310018, People’s Republic of China
| | - Xiang Lin
- Department of Orthopaedics, The Second Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou, Hainan, 570311, People’s Republic of China
| | - Tai-Zhi Chen
- Department of Orthopaedics, The Second Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou, Hainan, 570311, People’s Republic of China
| | - Long-Hui Wang
- Department of Orthopaedics, The Second Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou, Hainan, 570311, People’s Republic of China
| | - Sheng-Xing Liu
- Department of Orthopaedics, The Second Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou, Hainan, 570311, People’s Republic of China
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Chen Z, Su Y, Ding J, He J, Lai L, Song Y. Lobetyolin protects mice against LPS-induced sepsis by downregulating the production of inflammatory cytokines in macrophage. Front Pharmacol 2024; 15:1405163. [PMID: 38799158 PMCID: PMC11116692 DOI: 10.3389/fphar.2024.1405163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Accepted: 04/22/2024] [Indexed: 05/29/2024] Open
Abstract
Introduction: Sepsis is a clinical syndrome characterized by dysregulation of the host immune response due to infection, resulting in life-threatening organ damage. Despite active promotion and implementation of early preventative measures and bundle treatments, sepsis continues to exhibit high morbidity and mortality rates with no optimal pharmacological intervention available. Lobetyolin (LBT), the crucial component of polyacetylenes found in Codonopsis pilosula, has been scientifically proven to possess potent antioxidant and antitumor properties. However, its therapeutic potential for sepsis remains unknown. Methods: The mice received pretreatment with intraperitoneal injections of LBT, followed by injection with lipopolysaccharide (LPS) to induce sepsis. Peripheral blood samples were collected to detect TNF-α, IL-1β, and IL-6 levels. The survival status of different groups was recorded at various time intervals. RNA-Seq was utilized for the analysis of gene expression in peritoneal macrophages treated with LBT or LPS. Results: In this study, we observed a significant increase in the survival rate of mice pretreated with LBT in LPS induced sepsis mouse model. LBT demonstrated a remarkable reduction in the production of IL-6, TNF-α, and IL-1β in the serum, along with mitigated lung and liver tissue damage characterized by reduced inflammatory cell infiltration. Additionally, through RNA-seq analysis coupled with GO and KEGG analysis, it was revealed that LBT effectively suppressed genes associated with bacterium presence, cellular response to lipopolysaccharide stimulation, as well as cytokine-cytokine receptor interaction involving Cxcl10, Tgtp1, Gbp5, Tnf, Il1b and IRF7 specifically within macrophages. We also confirmed that LBT significantly downregulates the expression of IL-6, TNF-α, and IL-1β in macrophage activation induced by LPS. Discussion: Therefore, our findings demonstrated that LBT effectively inhibits the production of inflammatory cytokines (IL-6, TNF-α, and IL-1β) and mitigates sepsis induced by LPS through modulating macrophages' ability to generate these cytokines. These results suggest that LBT holds promise as a potential therapeutic agent for sepsis treatment.
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Affiliation(s)
- Zhonghua Chen
- Department of Emergency, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yixin Su
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, China
| | - Jingtong Ding
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, China
| | - Jia He
- Teaching Experimental Center of Public Health, Zhejiang University, Hangzhou, China
| | - Lihua Lai
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, China
| | - Yinjing Song
- Centre of Biomedical Research, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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7
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Jia Y, Li JH, Hu BC, Huang X, Yang X, Liu YY, Cai JJ, Yang X, Lai JM, Shen Y, Liu JQ, Zhu HP, Ye XM, Mo SJ. Targeting SLC22A5 fosters mitophagy inhibition-mediated macrophage immunity against septic acute kidney injury upon CD47-SIRPα axis blockade. Heliyon 2024; 10:e26791. [PMID: 38586373 PMCID: PMC10998134 DOI: 10.1016/j.heliyon.2024.e26791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 02/19/2024] [Accepted: 02/20/2024] [Indexed: 04/09/2024] Open
Abstract
Efferocytosis of apoptotic neutrophils (PMNs) by macrophages is helpful for inflammation resolution and injury repair, but the role of efferocytosis in intrinsic nature of macrophages during septic acute kidney injury (AKI) remains unknown. Here we report that CD47 and signal regulatory protein alpha (SIRPα)-the anti-efferocytotic 'don't eat me' signals-are highly expressed in peripheral blood mononuclear cells (PBMCs) from patients with septic AKI and kidney samples from mice with polymicrobial sepsis and endotoxin shock. Conditional knockout (CKO) of SIRPA in macrophages ameliorates AKI and systemic inflammation response in septic mice, accompanied by an escalation in mitophagy inhibition of macrophages. Ablation of SIRPA transcriptionally downregulates solute carrier family 22 member 5 (SLC22A5) in the lipopolysaccharide (LPS)-stimulated macrophages that efferocytose apoptotic neutrophils (PMNs). Targeting SLC22A5 renders mitophagy inhibition of macrophages in response to LPS stimuli, improves survival and deters development of septic AKI. Our study supports further clinical investigation of CD47-SIRPα signalling in sepsis and proposes that SLC22A5 might be a promising immunotherapeutic target for septic AKI.
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Affiliation(s)
- Yu Jia
- Department of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, PR China
| | - Jun-Hua Li
- Department of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, PR China
| | - Bang-Chuan Hu
- Emergency and Intensive Care Unit Center, Intensive Care Unit, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital), Hangzhou Medical College, Hangzhou, 310014, Zhejiang, PR China
| | - Xia Huang
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, PR China
| | - Xi Yang
- Department of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, PR China
| | - Yan-Yan Liu
- Department of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, PR China
| | - Juan-Juan Cai
- Department of Pathology, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital), Hangzhou Medical College, Hangzhou, 310014, Zhejiang, PR China
| | - Xue Yang
- Clinical Research Institute, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital), Hangzhou Medical College, Hangzhou, 310014, Zhejiang, PR China
| | - Jun-Mei Lai
- Center for Rehabilitation Medicine, Department of Intensive Rehabilitation Care Unit, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital), Hangzhou Medical College, Hangzhou 310014, Zhejiang, P.R.China
| | - Ye Shen
- Center for Rehabilitation Medicine, Department of Intensive Rehabilitation Care Unit, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital), Hangzhou Medical College, Hangzhou 310014, Zhejiang, P.R.China
| | - Jing-Quan Liu
- Emergency and Intensive Care Unit Center, Intensive Care Unit, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital), Hangzhou Medical College, Hangzhou, 310014, Zhejiang, PR China
| | - Hai-Ping Zhu
- Department of Intensive Care Unit, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, Zhejiang, PR China
| | - Xiang-Ming Ye
- Center for Rehabilitation Medicine, Department of Intensive Rehabilitation Care Unit, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital), Hangzhou Medical College, Hangzhou 310014, Zhejiang, P.R.China
- Center for Rehabilitation Medicine, Rehabilitation & Sports Medicine Research Institute of Zhejiang Province, Department of Rehabilitation Medicine, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital), Hangzhou Medical College, Hangzhou, 310014, Zhejiang, PR China
| | - Shi-Jing Mo
- Emergency and Intensive Care Unit Center, Intensive Care Unit, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital), Hangzhou Medical College, Hangzhou, 310014, Zhejiang, PR China
- Center for Rehabilitation Medicine, Department of Intensive Rehabilitation Care Unit, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital), Hangzhou Medical College, Hangzhou 310014, Zhejiang, P.R.China
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8
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Zhang T, Zhao J, Zheng T, Fu W, Ma T. Adenosine 2A receptor antagonists promote lymphocyte proliferation in sepsis by inhibiting Treg expression of PD-L1 in spleen. Immunology 2024; 171:566-582. [PMID: 38158796 DOI: 10.1111/imm.13744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 12/12/2023] [Indexed: 01/03/2024] Open
Abstract
The spleen is essential for lymphocyte proliferation, which is associated to sepsis prognosis. Adenosine 2A receptor (A2AR) blocking promotes lymphocyte proliferation in sepsis, however the mechanism is uncertain. Our sepsis cecum ligation perforation model showed that blocking A2AR increased survival and CD4+ cell numbers in a spleen-dependent mechanism. The sequencing of the transcriptome of the spleen indicated alterations in the expression of genes involved in the control of lymphocyte proliferation by inhibiting A2AR, including a reduction in the expression of PD-L1. Flow cytometry analysis of PD-L1 expression intensity in splenic cell subpopulations revealed that the Treg cell subpopulation was the strongest PD-L1-expressing cell population, and Treg PD-L1 expression decreased after blocking A2AR. In vitro activation of A2AR was able to upregulate PD-L1 expression of Treg and boost Treg capacity to limit lymphocyte proliferation, while blockage of PD-L1 partly reduced A2AR-activated Treg's ability to inhibit lymphocyte proliferation. In addition, blocking CREB phosphorylation significantly inhibited A2AR-induced PD-L1 expression. According to the findings of our research, inhibiting A2AR improves the prognosis of sepsis by lowering the level of PD-L1 expression by Treg in the spleen and reducing the inhibition of lymphocyte proliferation.
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Affiliation(s)
- Teng Zhang
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Jie Zhao
- Department of Intensive Care Unit, Tianjin Medical University General Hospital, Tianjin, China
| | - Ting Zheng
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Wei Fu
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Tao Ma
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
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9
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Colón DF, Wanderley CW, Turato WM, Borges VF, Franchin M, Castanheira FVS, Nascimento D, Prado D, Haruo Fernandes de Lima M, Volpon LC, Kavaguti SK, Carlotti AP, Carmona F, Franklin BS, Cunha TM, Alves-Filho JC, Cunha FQ. Paediatric sepsis survivors are resistant to sepsis-induced long-term immune dysfunction. Br J Pharmacol 2024; 181:1308-1323. [PMID: 37990806 DOI: 10.1111/bph.16286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 07/19/2023] [Accepted: 08/17/2023] [Indexed: 11/23/2023] Open
Abstract
BACKGROUND AND PURPOSE Sepsis-surviving adult individuals commonly develop immunosuppression and increased susceptibility to secondary infections, an outcome mediated by the axis IL-33/ILC2s/M2 macrophages/Tregs. Nonetheless, the long-term immune consequences of paediatric sepsis are indeterminate. We sought to investigate the role of age in the genesis of immunosuppression following sepsis. EXPERIMENTAL APPROACH Here, we compared the frequency of Tregs, the activation of the IL-33/ILC2s axis in M2 macrophages and the DNA methylation of epithelial lung cells from post-septic infant and adult mice. Likewise, sepsis-surviving mice were inoculated intranasally with Pseudomonas aeruginosa or by subcutaneous inoculation of the B16 melanoma cell line. Finally, blood samples from sepsis-surviving patients were collected and the concentration of IL-33 and Tregs frequency were assessed. KEY RESULTS In contrast to 6-week-old mice, 2-week-old mice were resistant to secondary infection and did not show impairment in tumour controls upon melanoma challenge. Mechanistically, increased IL-33 levels, Tregs expansion, and activation of ILC2s and M2-macrophages were observed in 6-week-old but not 2-week-old post-septic mice. Moreover, impaired IL-33 production in 2-week-old post-septic mice was associated with increased DNA methylation in lung epithelial cells. Notably, IL-33 treatment boosted the expansion of Tregs and induced immunosuppression in 2-week-old mice. Clinically, adults but not paediatric post-septic patients exhibited higher counts of Tregs and seral IL-33 levels. CONCLUSION AND IMPLICATIONS These findings demonstrate a crucial and age-dependent role for IL-33 in post-sepsis immunosuppression. Thus, a better understanding of this process may lead to differential treatments for adult and paediatric sepsis.
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Affiliation(s)
- David F Colón
- Center of Research in Inflammatory Diseases (CRID), University of São Paulo, Ribeirão Preto, Brazil
- Departments of Biochemistry and Immunology, University of São Paulo, Ribeirão Preto, Brazil
| | - Carlos W Wanderley
- Center of Research in Inflammatory Diseases (CRID), University of São Paulo, Ribeirão Preto, Brazil
- Department of Pharmacology, University of São Paulo, Ribeirão Preto, Brazil
| | - Walter M Turato
- Center of Research in Inflammatory Diseases (CRID), University of São Paulo, Ribeirão Preto, Brazil
| | - Vanessa F Borges
- Center of Research in Inflammatory Diseases (CRID), University of São Paulo, Ribeirão Preto, Brazil
- Department of Pharmacology, University of São Paulo, Ribeirão Preto, Brazil
| | - Marcelo Franchin
- School of Dentistry, Alfenas Federal University, Alfenas, Brazil
| | | | - Daniele Nascimento
- Center of Research in Inflammatory Diseases (CRID), University of São Paulo, Ribeirão Preto, Brazil
- Departments of Biochemistry and Immunology, University of São Paulo, Ribeirão Preto, Brazil
| | - Douglas Prado
- Center of Research in Inflammatory Diseases (CRID), University of São Paulo, Ribeirão Preto, Brazil
- Department of Pharmacology, University of São Paulo, Ribeirão Preto, Brazil
| | - Mikhael Haruo Fernandes de Lima
- Center of Research in Inflammatory Diseases (CRID), University of São Paulo, Ribeirão Preto, Brazil
- Departments of Biochemistry and Immunology, University of São Paulo, Ribeirão Preto, Brazil
| | - Leila C Volpon
- Department of Pediatrics, University of São Paulo, Ribeirão Preto, Brazil
| | - Silvia K Kavaguti
- Department of Pediatrics, University of São Paulo, Ribeirão Preto, Brazil
| | - Ana P Carlotti
- Physiology & Pharmacology Calgary, University of Calgary, Calgary, Canada
| | - Fabio Carmona
- Department of Pediatrics, University of São Paulo, Ribeirão Preto, Brazil
| | - Bernardo S Franklin
- Institute of Innate Immunity, Medical Faculty, University of Bonn, Bonn, Germany
| | - Thiago M Cunha
- Center of Research in Inflammatory Diseases (CRID), University of São Paulo, Ribeirão Preto, Brazil
- Department of Pharmacology, University of São Paulo, Ribeirão Preto, Brazil
| | - Jose Carlos Alves-Filho
- Center of Research in Inflammatory Diseases (CRID), University of São Paulo, Ribeirão Preto, Brazil
- Departments of Biochemistry and Immunology, University of São Paulo, Ribeirão Preto, Brazil
| | - Fernando Q Cunha
- Center of Research in Inflammatory Diseases (CRID), University of São Paulo, Ribeirão Preto, Brazil
- Department of Pharmacology, University of São Paulo, Ribeirão Preto, Brazil
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10
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Wang H, Wei Y, Wang N. Purinergic pathways and their clinical use in the treatment of acute myeloid leukemia. Purinergic Signal 2024:10.1007/s11302-024-09997-8. [PMID: 38446337 DOI: 10.1007/s11302-024-09997-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 02/21/2024] [Indexed: 03/07/2024] Open
Abstract
Despite the use of various therapies such as hematopoietic stem cell transplantation and chimeric antigen receptor T cell therapy (CAR-T), the prognosis of patients with acute myeloid leukemia (AML) is still generally poor. However, immunotherapy is currently a hot topic in the treatment of hematological tumors. Extracellular adenosine triphosphate (ATP) can be converted to adenosine diphosphate (ADP) via CD39, and ADP can be converted to adenosine via CD73, which can bind to P1 and P2 receptors to exert immunomodulatory effects. Research on the mechanism of the purinergic signaling pathway can provide a new direction for the treatment of AML, and inhibitors of this signaling pathway have been discovered by several researchers and gradually applied in the clinic. In this paper, the mechanism of the purinergic signaling pathway and its clinical application are described, revealing a new target for the treatment of AML and subsequent improvement in patient prognosis.
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Affiliation(s)
- Huijuan Wang
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Yujie Wei
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Na Wang
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.
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11
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Li JX, Xiao X, Teng F, Li HH. Myeloid ACE2 protects against septic hypotension and vascular dysfunction through Ang-(1-7)-Mas-mediated macrophage polarization. Redox Biol 2024; 69:103004. [PMID: 38141575 PMCID: PMC10788636 DOI: 10.1016/j.redox.2023.103004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 12/13/2023] [Accepted: 12/16/2023] [Indexed: 12/25/2023] Open
Abstract
Angiotensin converting enzyme 2 (ACE2) is a new identified member of the renin-angiotensin-aldosterone system (RAAS) that cleaves angiotensin II (Ang II) to Ang (1-7), which exerts anti-inflammatory and antioxidative activities via binding with Mas receptor (MasR). However, the functional role of ACE2 in sepsis-related hypotension remains unknown. Our results indicated that sepsis significantly reduced blood pressure and led to disruption between ACE-Ang II and ACE2-Ang (1-7) balance. ACE2 knock-in mice exhibited improved sepsis-induced mortality, hypotension and vascular dysfunction, while ACE2 knockout mice exhibited the opposite effects. Bone marrow transplantation and in vitro experiments confirmed that myeloid ACE2 exerted a protective role by suppressing oxidative stress, NO production and macrophage polarization via the Ang (1-7)-MasR-NF-κB and STAT1 pathways. Thus, ACE2 on myeloid cells could protect against sepsis-mediated hypotension and vascular dysfunction, and upregulating ACE2 may represent a promising therapeutic option for septic patients with hypotension.
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Affiliation(s)
- Jia-Xin Li
- Department of Emergency Medicine, Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Beijing Chao-Yang Hospital, Capital Medical University, No. 8 Worker's Stadium South Road, Beijing, 100020, China
| | - Xue Xiao
- Department of Emergency Medicine, Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Beijing Chao-Yang Hospital, Capital Medical University, No. 8 Worker's Stadium South Road, Beijing, 100020, China
| | - Fei Teng
- Department of Emergency Medicine, Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Beijing Chao-Yang Hospital, Capital Medical University, No. 8 Worker's Stadium South Road, Beijing, 100020, China
| | - Hui-Hua Li
- Department of Emergency Medicine, Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Beijing Chao-Yang Hospital, Capital Medical University, No. 8 Worker's Stadium South Road, Beijing, 100020, China.
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12
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Bai H, Lu Q, Wu C, Xu F, Liu J, Wang K, Ding H, Yin Y, Liu Y, Lai X, Cao J. Bone morphogenetic protein 9 is a candidate prognostic biomarker and host-directed therapy target for sepsis. Sci Transl Med 2024; 16:eadi3275. [PMID: 38295185 DOI: 10.1126/scitranslmed.adi3275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 12/20/2023] [Indexed: 02/02/2024]
Abstract
Defining next-generation immune therapeutics for the treatment of sepsis will involve biomarker-based therapeutic decision-making. Bone morphogenetic protein 9 (BMP9) is a cytokine in the transforming growth factor-β superfamily. Here, circulating BMP9 concentrations were quantified in two independent cohorts of patients with sepsis. Decreased concentrations of serum BMP9 were observed in the patients with sepsis at the time of admission as compared with healthy controls. Concentrations of BMP9 at the time of admission were also associated with 28-day mortality, because patients with sepsis at a higher risk of death had lower BMP9 concentrations. The mechanism driving the contribution of BMP9 to host immunity was further investigated using in vivo murine sepsis models and in vitro cell models. We found that BMP9 treatment improved outcome in mice with experimental sepsis. BMP9-treated mice exhibited increased macrophage influx into the peritoneal cavity and more efficient bacterial clearance than untreated mice. In vitro, BMP9 promoted macrophage recruitment, phagocytosis, and subsequent bacterial killing. We further found that deletion of the type 1 BMP receptor ALK1 in macrophages abolished BMP9-mediated protection against polymicrobial sepsis in vivo. Further experiments indicated that the regulation of macrophage activation by the BMP9-ALK1 axis was mainly mediated through the suppressor of mother against decapentaplegic 1/5 signaling pathway. Together, these results suggest that BMP9 can both serve as a biomarker for patient stratification with an independent prognostic value and be developed as a host-directed therapy for sepsis.
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Affiliation(s)
- Haobo Bai
- Department of Laboratory Medicine, First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Qian Lu
- Department of Laboratory Medicine, First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
- Biology Science Institutes of Chongqing Medical University, Chongqing 400016, China
| | - Chunxiang Wu
- Department of Clinical Laboratory Medicine, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu 610072, China
| | - Fang Xu
- Department of Critical Care Medicine, First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Jiayu Liu
- Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, School of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Ke Wang
- Department of Laboratory Medicine, First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Hao Ding
- Department of Laboratory Medicine, First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Yibing Yin
- Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, School of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Yi Liu
- Department of Surgery, School of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Xiaofei Lai
- Department of Laboratory Medicine, First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Ju Cao
- Department of Laboratory Medicine, First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
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13
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Wu Y, Lin JY, Zhou YD, Liu HJ, Lu SX, Zhang XK, Guan YY, Nagle DG, Zhang WD, Chen HZ, Luan X. Oncolytic Peptide-Nanoplatform Drives Oncoimmune Response and Reverses Adenosine-Induced Immunosuppressive Tumor Microenvironment. Adv Healthc Mater 2024:e2303445. [PMID: 38290499 DOI: 10.1002/adhm.202303445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 01/22/2024] [Indexed: 02/01/2024]
Abstract
The application of oncolytic peptides has become a powerful approach to induce complete and long-lasting remission in multiple types of carcinomas, as affirmed by the appearance of tumor-associated antigens and adenosine triphosphate (ATP) in large quantities, which jumpstarts the cancer-immunity cycle. However, the ATP breakdown product adenosine is a significant contributor to forming the immunosuppressive tumor microenvironment, which substantially weakens peptide-driven oncolytic immunotherapy. In this study, a lipid-coated micelle (CA@TLM) loaded with a stapled oncolytic peptide (PalAno) and an adenosine 2A receptor (A2AR) inhibitor (CPI-444) is devised to enact tumor-targeted oncolytic immunotherapy and to overcome adenosine-mediated immune suppression simultaneously. The CA@TLM micelle accumulates in tumors with high efficiency, and the acidic tumor microenvironment prompts the rapid release of PalAno and CPI-444. Subsequently, PalAno induces swift membrane lysis of tumor cells and the release of antigenic materials. Meanwhile, CPI-444 blocks the activation of the immunosuppressive adenosine-A2AR signaling pathway. This combined approach exhibits pronounced synergy at stalling tumor growth and metastasis in animal models for triple-negative breast cancer and melanoma, providing a novel strategy for enhanced oncolytic immunotherapy.
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Affiliation(s)
- Ye Wu
- Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research and Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Jia-Yi Lin
- Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research and Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Yu-Dong Zhou
- Department of Chemistry and Biochemistry, College of Liberal Arts, University of Mississippi, University, MS, 38677, USA
| | - Hai-Jun Liu
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Sheng-Xin Lu
- Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research and Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Xiao-Kun Zhang
- Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research and Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Ying-Yun Guan
- Department of Pharmacy, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
| | - Dale G Nagle
- Department of BioMolecular Sciences and Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University, MS, 38677, USA
| | - Wei-Dong Zhang
- School of Pharmacy, Second Military Medical University, Shanghai, 200433, China
- State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, Institute of Medicinal Plant Development, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100700, China
| | - Hong-Zhuan Chen
- Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research and Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Xin Luan
- Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research and Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
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14
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Wang B, Zhou A, Pan Q, Li Y, Xi Z, He K, Li D, Li B, Liu Y, Liu Y, Xia Q. Adenosinergic metabolism pathway: an emerging target for improving outcomes of solid organ transplantation. Transl Res 2024; 263:93-101. [PMID: 37678756 DOI: 10.1016/j.trsl.2023.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/25/2023] [Accepted: 09/01/2023] [Indexed: 09/09/2023]
Abstract
Extracellular nucleotides are widely recognized as crucial modulators of immune responses in peripheral tissues. Adenosine triphosphate (ATP) and adenosine are key components of extracellular nucleotides, the balance of which contributes to immune homeostasis. Under tissue injury, ATP exerts its pro-inflammatory function, while the adenosinergic pathway rapidly degrades ATP to immunosuppressive adenosine, thus inhibiting excessive and uncontrolled inflammatory responses. Previous reviews have explored the immunoregulatory role of extracellular adenosine in various pathological conditions, especially inflammation and malignancy. However, current knowledge regarding adenosine and adenosinergic metabolism in the context of solid organ transplantation remains fragmented. In this review, we summarize the latest information on adenosine metabolism and the mechanisms by which it suppresses the effector function of immune cells, as well as highlight the protective role of adenosine in all stages of solid organ transplantation, including reducing ischemia reperfusion injury during organ procurement, alleviating rejection, and promoting graft regeneration after transplantation. Finally, we discuss the potential for future clinical translation of adenosinergic pathway in solid organ transplantation.
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Affiliation(s)
- Bingran Wang
- Department of liver surgery, Renji Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Engineering Research Center of Transplantation and Immunology, Shanghai, China; Shanghai Institute of Transplantation, Shanghai, China
| | - Aiwei Zhou
- Department of liver surgery, Renji Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Engineering Research Center of Transplantation and Immunology, Shanghai, China; Shanghai Institute of Transplantation, Shanghai, China
| | - Qi Pan
- Department of liver surgery, Renji Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Engineering Research Center of Transplantation and Immunology, Shanghai, China; Shanghai Institute of Transplantation, Shanghai, China
| | - Yanran Li
- Department of liver surgery, Renji Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Engineering Research Center of Transplantation and Immunology, Shanghai, China; Shanghai Institute of Transplantation, Shanghai, China
| | - Zhifeng Xi
- Department of liver surgery, Renji Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Engineering Research Center of Transplantation and Immunology, Shanghai, China; Shanghai Institute of Transplantation, Shanghai, China
| | - Kang He
- Department of liver surgery, Renji Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Engineering Research Center of Transplantation and Immunology, Shanghai, China; Shanghai Institute of Transplantation, Shanghai, China
| | - Dan Li
- Center for Immune-Related Diseases at Shanghai Institute of Immunology, Department of Respiratory and Critical Care Medicine of Ruijin Hospital, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bin Li
- Center for Immune-Related Diseases at Shanghai Institute of Immunology, Department of Respiratory and Critical Care Medicine of Ruijin Hospital, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yongbo Liu
- Department of liver surgery, Renji Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Engineering Research Center of Transplantation and Immunology, Shanghai, China; Shanghai Institute of Transplantation, Shanghai, China
| | - Yuan Liu
- Department of liver surgery, Renji Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Engineering Research Center of Transplantation and Immunology, Shanghai, China; Shanghai Institute of Transplantation, Shanghai, China.
| | - Qiang Xia
- Department of liver surgery, Renji Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Engineering Research Center of Transplantation and Immunology, Shanghai, China; Shanghai Institute of Transplantation, Shanghai, China
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15
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Cutrin JC, Alves-Filho JC, Ryffel B. Editorial: Sepsis: studying the immune system to highlight biomarkers for diagnosis, prognosis and personalized treatments. Front Immunol 2023; 14:1325020. [PMID: 38077361 PMCID: PMC10698736 DOI: 10.3389/fimmu.2023.1325020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 11/06/2023] [Indexed: 12/18/2023] Open
Affiliation(s)
- Juan C. Cutrin
- Molecular Biotechnology Center II “Guido Tarone”, Department of Molecular Biotechnologies and Sciences for the Health, University of Torino, Turin, Italy
| | - José C. Alves-Filho
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
- Center for Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Bernhard Ryffel
- INEM, CNRS, UMR7355, Orléans, France and Experimental and Molecular Immunology and Neurogenetics, University of Orléans, Orleans, France
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16
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Leite RO, de Souza PO, Haas CB, da Silveira F, Mohr KR, Bertoni APS, Soares MS, Azambuja JH, Prá MD, da Cruz LLP, Gelsleichter NE, Begnini K, Hasko G, Wink MR, Spanevello RM, Braganhol E. ATPergic signaling disruption in human sepsis as a potential source of biomarkers for clinical use. Clin Exp Med 2023; 23:3651-3662. [PMID: 36943594 PMCID: PMC10511658 DOI: 10.1007/s10238-023-01045-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 03/06/2023] [Indexed: 03/23/2023]
Abstract
Sepsis is a life-threatening organ dysfunction caused by a dysregulated inflammatory response to infection. To date, there is no specific treatment established for sepsis. In the extracellular compartment, purines such as adenosine triphosphate (ATP) and adenosine play essential roles in the immune/inflammatory responses during sepsis and septic shock. The balance of extracellular levels among ATP and adenosine is intimately involved in the signals related to immune stimulation/immunosuppression balance. Specialized enzymes, including CD39, CD73, and adenosine deaminase (ADA), are responsible to metabolize ATP to adenosine which will further sensitize the P2 and P1 purinoceptors, respectively. Disruption of the purinergic pathway had been described in the sepsis pathophysiology. Although purinergic signaling has been suggested as a potential target for sepsis treatment, the majority of data available were obtained using pre-clinical approaches. We hypothesized that, as a reflection of deregulation on purinergic signaling, septic patients exhibit differential measurements of serum, neutrophils and monocytes purinergic pathway markers when compared to two types of controls (healthy and ward). It was observed that ATP and ADP serum levels were increased in septic patients, as well as the A2a mRNA expression in neutrophils and monocytes. Both ATPase/ADPase activities were increased during sepsis. Serum ATP and ADP levels, and both ATPase and ADPase activities were associated with the diagnosis of sepsis, representing potential biomarkers candidates. In conclusion, our results advance the translation of purinergic signaling from pre-clinical models into the clinical setting opening opportunities for so much needed new strategies for sepsis and septic shock diagnostics and treatment.
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Affiliation(s)
- R O Leite
- Departamento de Clínica Médica, Universidade Federal de Pelotas (UFPel), Pelotas, Brazil
- Hospital Nossa Senhora da Conceição, Porto Alegre, Brazil
- Programa de Pós-Graduação em Bioquímica e Bioprospecção, UFPel, Pelotas, Brazil
| | - P O de Souza
- Programa de Pós-Graduação em Biociências, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, Brazil
| | - C B Haas
- Programa de Pós-Graduação em Biociências, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, Brazil
| | - F da Silveira
- Hospital Nossa Senhora da Conceição, Porto Alegre, Brazil
| | - K R Mohr
- Hospital Nossa Senhora da Conceição, Porto Alegre, Brazil
| | - A P S Bertoni
- Programa de Pós-Graduação em Ciências da Saúde, UFCSPA, Porto Alegre, Brazil
| | - M S Soares
- Programa de Pós-Graduação em Bioquímica e Bioprospecção, UFPel, Pelotas, Brazil
| | - J H Azambuja
- Programa de Pós-Graduação em Biociências, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, Brazil
| | - M Dal Prá
- Programa de Pós-Graduação em Biociências, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, Brazil
| | - L L P da Cruz
- Programa de Pós-Graduação em Ciências da Saúde, UFCSPA, Porto Alegre, Brazil
| | - N E Gelsleichter
- Programa de Pós-Graduação em Biociências, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, Brazil
| | - K Begnini
- Programa de Pós-Graduação em Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - G Hasko
- Department of Anesthesiology, Columbia University, New York, NY, USA
| | - M R Wink
- Programa de Pós-Graduação em Biociências, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, Brazil
- Programa de Pós-Graduação em Ciências da Saúde, UFCSPA, Porto Alegre, Brazil
| | - R M Spanevello
- Programa de Pós-Graduação em Bioquímica e Bioprospecção, UFPel, Pelotas, Brazil
| | - E Braganhol
- Programa de Pós-Graduação em Bioquímica e Bioprospecção, UFPel, Pelotas, Brazil.
- Programa de Pós-Graduação em Biociências, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, Brazil.
- Programa de Pós-Graduação em Ciências da Saúde, UFCSPA, Porto Alegre, Brazil.
- Departamento de Ciências Básicas da Saúde, Universidade Federal de Ciências da Saúde de Porto Alegre, Sarmento Leite St, 245-Main Building-Room 304, Porto Alegre, RS, 90.050-170, Brazil.
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17
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Arunachalam AR, Samuel SS, Mani A, Maynard JP, Stayer KM, Dybbro E, Narayanan S, Biswas A, Pathan S, Soni K, Kamal AHM, Ambati CSR, Putluri N, Desai MS, Thevananther S. P2Y2 purinergic receptor gene deletion protects mice from bacterial endotoxin and sepsis-associated liver injury and mortality. Am J Physiol Gastrointest Liver Physiol 2023; 325:G471-G491. [PMID: 37697947 PMCID: PMC10812707 DOI: 10.1152/ajpgi.00090.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 08/28/2023] [Accepted: 09/11/2023] [Indexed: 09/13/2023]
Abstract
The liver plays a significant role in regulating a wide range of metabolic, homeostatic, and host-defense functions. However, the impact of liver injury on the host's ability to control bacteremia and morbidity in sepsis is not well understood. Leukocyte recruitment and activation lead to cytokine and chemokine release, which, in turn, trigger hepatocellular injury and elevate nucleotide levels in the extracellular milieu. P2Y2 purinergic receptors, G protein-coupled and activated by extracellular ATP/UTP, are expressed at the cell surface of hepatocytes and nonparenchymal cells. We sought to determine whether P2Y2 purinergic receptor function is necessary for the maladaptive host response to bacterial infection and endotoxin-mediated inflammatory liver injury and mortality in mice. We report that P2Y2 purinergic receptor knockout mice (P2Y2-/-) had attenuated inflammation and liver injury, with improved survival in response to LPS/galactosamine (LPS/GalN; inflammatory liver injury) and cecal ligation and puncture (CLP; polymicrobial sepsis). P2Y2-/- livers had attenuated c-Jun NH2-terminal kinase activation, matrix metallopeptidase-9 expression, and hepatocyte apoptosis in response to LPS/GalN and attenuated inducible nitric oxide synthase and nucleotide-binding oligomerization domain, leucine-rich repeat and pyrin domain containing 3 protein expression in response to CLP. Implicating liver injury in the disruption of amino acid homeostasis, CLP led to lower serum arginine and higher bacterial load and morbidity in the WT mice, whereas serum arginine levels were comparable to sham-operated controls in P2Y2-/- mice, which had attenuated bacteremia and improved survival. Collectively, our studies highlight the pathophysiological relevance of P2Y2 purinergic receptor function in inflammatory liver injury and dysregulation of systemic amino acid homeostasis with implications for sepsis-associated immune dysfunction and morbidity in mice.NEW & NOTEWORTHY Our studies provide experimental evidence for P2Y2 purinergic receptor-mediated potentiation of inflammatory liver injury, morbidity, and mortality, in two well-established animal models of inflammatory liver injury. Our findings highlight the potential to target P2Y2 purinergic signaling to attenuate the induction of "cytokine storm" and prevent its deleterious consequences on liver function, systemic amino acid homeostasis, host response to bacterial infection, and sepsis-associated morbidity and mortality.
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Affiliation(s)
- Athis R Arunachalam
- Neonatology, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Sanju S Samuel
- Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Arunmani Mani
- Section of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Janielle P Maynard
- Section of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Kelsey M Stayer
- Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Eric Dybbro
- Section of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Subapradha Narayanan
- Section of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Aalekhya Biswas
- Section of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Saliha Pathan
- Section of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Krishnakant Soni
- Section of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Abu Hena Mostafa Kamal
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, United States
| | | | - Nagireddy Putluri
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, United States
| | - Moreshwar S Desai
- Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Sundararajah Thevananther
- Section of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
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18
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Vincenzi F, Pasquini S, Contri C, Cappello M, Nigro M, Travagli A, Merighi S, Gessi S, Borea PA, Varani K. Pharmacology of Adenosine Receptors: Recent Advancements. Biomolecules 2023; 13:1387. [PMID: 37759787 PMCID: PMC10527030 DOI: 10.3390/biom13091387] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/05/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
Adenosine receptors (ARs) are widely acknowledged pharmacological targets yet are still underutilized in clinical practice. Their ubiquitous distribution in almost all cells and tissues of the body makes them, on the one hand, excellent candidates for numerous diseases, and on the other hand, intrinsically challenging to exploit selectively and in a site-specific manner. This review endeavors to comprehensively depict the substantial advancements witnessed in recent years concerning the development of drugs that modulate ARs. Through preclinical and clinical research, it has become evident that the modulation of ARs holds promise for the treatment of numerous diseases, including central nervous system disorders, cardiovascular and metabolic conditions, inflammatory and autoimmune diseases, and cancer. The latest studies discussed herein shed light on novel mechanisms through which ARs exert control over pathophysiological states. They also introduce new ligands and innovative strategies for receptor activation, presenting compelling evidence of efficacy along with the implicated signaling pathways. Collectively, these emerging insights underscore a promising trajectory toward harnessing the therapeutic potential of these multifaceted targets.
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Affiliation(s)
- Fabrizio Vincenzi
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (C.C.); (M.C.); (M.N.); (A.T.); (S.M.); (S.G.); (K.V.)
| | - Silvia Pasquini
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy;
| | - Chiara Contri
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (C.C.); (M.C.); (M.N.); (A.T.); (S.M.); (S.G.); (K.V.)
| | - Martina Cappello
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (C.C.); (M.C.); (M.N.); (A.T.); (S.M.); (S.G.); (K.V.)
| | - Manuela Nigro
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (C.C.); (M.C.); (M.N.); (A.T.); (S.M.); (S.G.); (K.V.)
| | - Alessia Travagli
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (C.C.); (M.C.); (M.N.); (A.T.); (S.M.); (S.G.); (K.V.)
| | - Stefania Merighi
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (C.C.); (M.C.); (M.N.); (A.T.); (S.M.); (S.G.); (K.V.)
| | - Stefania Gessi
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (C.C.); (M.C.); (M.N.); (A.T.); (S.M.); (S.G.); (K.V.)
| | | | - Katia Varani
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (C.C.); (M.C.); (M.N.); (A.T.); (S.M.); (S.G.); (K.V.)
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19
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Stagg J, Golden E, Wennerberg E, Demaria S. The interplay between the DNA damage response and ectonucleotidases modulates tumor response to therapy. Sci Immunol 2023; 8:eabq3015. [PMID: 37418547 PMCID: PMC10394739 DOI: 10.1126/sciimmunol.abq3015] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 06/14/2023] [Indexed: 07/09/2023]
Abstract
The extracellular nucleoside adenosine reduces tissue inflammation and is generated by irreversible dephosphorylation of adenosine monophosphate (AMP) mediated by the ectonucleotidase CD73. The pro-inflammatory nucleotides adenosine triphosphate, nicotinamide adenine dinucleotide, and cyclic guanosine -monophosphate-AMP (cGAMP), which are produced in the tumor microenvironment (TME) during therapy-induced immunogenic cell death and activation of innate immune signaling, can be converted into AMP by ectonucleotidases CD39, CD38, and CD203a/ENPP1. Thus, ectonucleotidases shape the TME by converting immune-activating signals into an immunosuppressive one. Ectonucleotidases also hinder the ability of therapies including radiation therapy, which enhance the release of pro-inflammatory nucleotides in the extracellular milieu, to induce immune-mediated tumor rejection. Here, we review the immunosuppressive effects of adenosine and the role of different ectonucleotidases in modulating antitumor immune responses. We discuss emerging opportunities to target adenosine generation and/or its ability to signal via adenosine receptors expressed by immune and cancer cells in the context of combination immunotherapy and radiotherapy.
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Affiliation(s)
- John Stagg
- Centre de Recherche du Centre Hospitalier de
l’Université de Montréal, 900 St-Denis street, Montreal,
Quebec, Canada, H2X 0A9
| | - Encouse Golden
- Department of Radiation Oncology, Weill Cornell Medicine,
New York, NY 10065, USA
| | - Erik Wennerberg
- Division of Radiotherapy and Imaging, Institute of Cancer
Research, London SM2 5NG, UK
| | - Sandra Demaria
- Department of Radiation Oncology, Weill Cornell Medicine,
New York, NY 10065, USA
- Department of Pathology and Laboratory Medicine, Weill
Cornell Medicine, New York, NY, 10065, USA
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20
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Wu Y, Wang Q, Li M, Lao J, Tang H, Ming S, Wu M, Gong S, Li L, Liu L, Huang X. SLAMF7 regulates the inflammatory response in macrophages during polymicrobial sepsis. J Clin Invest 2023; 133:150224. [PMID: 36749634 PMCID: PMC10014109 DOI: 10.1172/jci150224] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 01/27/2023] [Indexed: 02/08/2023] Open
Abstract
Uncontrolled inflammation occurred in sepsis results in multiple organ injuries and shock, which contributes to the death of patients with sepsis. However, the regulatory mechanisms that restrict excessive inflammation are still elusive. Here, we identified an Ig-like receptor called signaling lymphocyte activation molecular family 7 (SLAMF7) as a key suppressor of inflammation during sepsis. We found that the expression of SLAMF7 on monocytes/macrophages was significantly elevated in patients with sepsis and in septic mice. SLAMF7 attenuated TLR-dependent MAPK and NF-κB signaling activation in macrophages by cooperating with Src homology 2-containing inositol-5'‑phosphatase 1 (SHIP1). Furthermore, SLAMF7 interacted with SHIP1 and TNF receptor-associated factor 6 (TRAF6) to inhibit K63 ubiquitination of TRAF6. In addition, we found that tyrosine phosphorylation sites within the intracellular domain of SLAMF7 and the phosphatase domain of SHIP1 were indispensable for the interaction between SLAMF7, SHIP1, and TRAF6 and SLAMF7-mediated modulation of cytokine production. Finally, we demonstrated that SLAMF7 protected against lethal sepsis and endotoxemia by downregulating macrophage proinflammatory cytokines and suppressing inflammation-induced organ damage. Taken together, our findings reveal a negative regulatory role of SLAMF7 in polymicrobial sepsis, thus providing sights into the treatment of sepsis.
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Affiliation(s)
- Yongjian Wu
- Center for Infection and Immunity and Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong Province, China
| | - Qiaohua Wang
- Center for Infection and Immunity and Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong Province, China
| | - Miao Li
- Scientific Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, Guangdong Province, China
| | - Juanfeng Lao
- Center for Infection and Immunity and Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong Province, China
| | - Huishu Tang
- Center for Infection and Immunity and Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong Province, China
| | - Siqi Ming
- National Clinical Research Center for Infectious Disease, Shenzhen Third People's Hospital, The Second Affiliated Hospital of the Southern University of Science and Technology, Shenzhen, Guangdong Province, China
| | - Minhao Wu
- Center for Infection and Immunity and Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong Province, China
| | - Sitang Gong
- Department of Gastroenterology, Guangzhou Women and Children's Medical Center, Guangzhou Institute of Pediatrics, Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Linhai Li
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Qingyuan, Guangdong Province, China
| | - Lei Liu
- National Clinical Research Center for Infectious Disease, Shenzhen Third People's Hospital, The Second Affiliated Hospital of the Southern University of Science and Technology, Shenzhen, Guangdong Province, China
| | - Xi Huang
- Center for Infection and Immunity and Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong Province, China.,National Clinical Research Center for Infectious Disease, Shenzhen Third People's Hospital, The Second Affiliated Hospital of the Southern University of Science and Technology, Shenzhen, Guangdong Province, China.,The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Qingyuan, Guangdong Province, China
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21
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Zhang X, Zhao Z, Wu Q, Wang L, Li L, Wang M, Ren Y, Pan L, Tang H, Li F. Single-cell analysis reveals changes in BCG vaccine-injected mice modeling tuberculous meningitis brain infection. Cell Rep 2023; 42:112177. [PMID: 36862557 DOI: 10.1016/j.celrep.2023.112177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 09/28/2022] [Accepted: 02/13/2023] [Indexed: 03/03/2023] Open
Abstract
Tuberculous meningitis (TBM) is the most severe and deadly manifestation of tuberculosis. Neurological complications are observed in up to 50% of patients affected. Here, attenuated Mycobacterium bovis are injected into the cerebellum of mice, and histopathological images and cultured colonies confirm successful brain infection. Then, whole-brain tissue is dissected for 10X Genomics single-cell sequencing, and we acquire 15 cell types. Transcriptional changes of inflammation processes are found in multiple cell types. Specifically, Stat1 and IRF1 are shown to mediate inflammation in macrophages and microglia. For neurons, decreased oxidative phosphorylation activity in neurons is observed, which corresponds to TBM clinical symptoms of neurodegeneration. Finally, ependymal cells present prominent transcriptional changes, and decreased FERM domain containing 4A (Frmd4a) may contribute to TBM clinical symptoms of hydrocephalus and neurodegeneration. This study shows a single-cell transcriptome of M. bovis infection in mice and improves the understanding of brain infection and neurological complications in TBM.
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Affiliation(s)
- Xiaolin Zhang
- Department of Respiratory Disease and Critical Care Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Zhangyan Zhao
- Department of Respiratory Disease and Critical Care Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Qingguo Wu
- Department of Respiratory Disease and Critical Care Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Lei Wang
- Department of Respiratory Disease and Critical Care Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Liqun Li
- Department of Respiratory Disease and Critical Care Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Mei Wang
- Department of Respiratory Disease and Critical Care Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Yang Ren
- Department of Respiratory Disease and Critical Care Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Lei Pan
- Department of Respiratory Disease and Critical Care Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Haicheng Tang
- Department of Respiratory Disease and Critical Care Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China.
| | - Feng Li
- Department of Respiratory Disease and Critical Care Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China; Shanghai Institute of Infectious Disease and Biosecurity, Fudan University, Shanghai 200032, China.
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22
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Jiang S, Feng R, Tian Z, Zhou J, Zhang W. Metabolic dialogs between B cells and the tumor microenvironment: Implications for anticancer immunity. Cancer Lett 2023; 556:216076. [PMID: 36724837 DOI: 10.1016/j.canlet.2023.216076] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/13/2023] [Accepted: 01/26/2023] [Indexed: 01/30/2023]
Abstract
Immunometabolism, a branch of biology describing the link between immunity and metabolism, is an emerging topic in cancer immunology. It is currently well accepted that B cells and tertiary lymph structures formed by them are associated with favorable outcomes when patients undergo cancer immunotherapy. Understanding the determinants of B-cell fate and function in cancer patients is necessary for improving cancer immunotherapy. Accumulating evidence points to the tumor microenvironment being a critical metabolic hurdle to an efficient antitumor B-cell response. At the same time, several B-cell-derived metabolites have recently been reported to inhibit anticancer immunity. In this literature review, key B-cell immunometabolism studies and the metabolic life of B cells were summarized. Then, we discussed the intrinsic metabolic pathways of B cells themselves and how the tumor microenvironment and B cells in tumors metabolically influence each other. Finally, we pointed out key questions to provide some inspiration for further study of the role of B-cell immunometabolism in the antitumor immune response.
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Affiliation(s)
- Su Jiang
- Department of Medical Laboratory Science, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ranran Feng
- Department of Medical Laboratory Science, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ziying Tian
- Department of Medical Laboratory Science, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jieyu Zhou
- Department of Medical Laboratory Science, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Wenling Zhang
- Department of Medical Laboratory Science, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China.
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23
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Gauthier J, Grégoire M, Reizine F, Lesouhaitier M, Desvois Y, Ghukasyan G, Moreau C, Amé P, Tarte K, Tadié JM, Delaloy C. Citrulline enteral administration markedly reduces immunosuppressive extrafollicular plasma cell differentiation in a preclinical model of sepsis. Eur J Immunol 2023; 53:e2250154. [PMID: 36564641 DOI: 10.1002/eji.202250154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 11/22/2022] [Accepted: 12/21/2022] [Indexed: 12/25/2022]
Abstract
The sustained immunosuppression associated with severe sepsis favors an increased susceptibility to secondary infections and remains incompletely understood. Plasmablast and plasma cell subsets, whose primary function is to secrete antibodies, have emerged as important suppressive populations that expand during sepsis. In particular, sepsis supports CD39hi plasmablast metabolic reprogramming associated with adenosine-mediated suppressive activity. Arginine deficiency has been linked to an increased risk of secondary infections in sepsis. Overcoming arginine shortage by citrulline administration efficiently improves sepsis-induced immunosuppression and secondary infections in the cecal ligation and puncture murine model. Here, we aimed to determine the impact of citrulline administration on B cell suppressive responses in sepsis. We demonstrate that restoring arginine bioavailability through citrulline administration markedly reduces the dominant extrafollicular B cell response, decreasing the immunosuppressive LAG3+ and CD39+ plasma cell populations, and restoring splenic follicles. At the molecular level, the IRF4/MYC-mediated B cell reprogramming required for extrafollicular plasma cell differentiation is shunted in the splenic B cells of mice fed with citrulline. Our study reveals a prominent impact of nutrition on B cell responses and plasma cell differentiation and further supports the development of citrulline-based clinical studies to prevent sepsis-associated immune dysfunction.
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Affiliation(s)
| | - Murielle Grégoire
- UMR INSERM S1236, LabEx IGO, Univ Rennes, EFS, Rennes, France
- CHU Rennes, SITI Laboratory, Pôle Biologie, Rennes, France
| | - Florian Reizine
- UMR INSERM S1236, LabEx IGO, Univ Rennes, EFS, Rennes, France
- CHU Rennes, SITI Laboratory, Pôle Biologie, Rennes, France
- CHU Rennes, Maladies Infectieuses et Réanimation Médicale, Rennes, France
| | - Mathieu Lesouhaitier
- UMR INSERM S1236, LabEx IGO, Univ Rennes, EFS, Rennes, France
- CHU Rennes, SITI Laboratory, Pôle Biologie, Rennes, France
- CHU Rennes, Maladies Infectieuses et Réanimation Médicale, Rennes, France
| | - Yoni Desvois
- UMR INSERM S1236, LabEx IGO, Univ Rennes, EFS, Rennes, France
| | | | - Caroline Moreau
- CHU Rennes, Laboratoire de Biochimie, Pôle Biologie, Rennes, France
- Univ Rennes, INSERM, EHESP, IRSET, UMR S1085, Rennes, France
| | - Patricia Amé
- UMR INSERM S1236, LabEx IGO, Univ Rennes, EFS, Rennes, France
- CHU Rennes, SITI Laboratory, Pôle Biologie, Rennes, France
| | - Karin Tarte
- UMR INSERM S1236, LabEx IGO, Univ Rennes, EFS, Rennes, France
- CHU Rennes, SITI Laboratory, Pôle Biologie, Rennes, France
| | - Jean-Marc Tadié
- UMR INSERM S1236, LabEx IGO, Univ Rennes, EFS, Rennes, France
- CHU Rennes, SITI Laboratory, Pôle Biologie, Rennes, France
- CHU Rennes, Maladies Infectieuses et Réanimation Médicale, Rennes, France
| | - Céline Delaloy
- UMR INSERM S1236, LabEx IGO, Univ Rennes, EFS, Rennes, France
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24
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Xing J, Wang R, Cui F, Song L, Ma Q, Xu H. Role of the regulation of mesenchymal stem cells on macrophages in sepsis. Int J Immunopathol Pharmacol 2023; 37:3946320221150722. [PMID: 36840553 PMCID: PMC9969469 DOI: 10.1177/03946320221150722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023] Open
Abstract
Sepsis is a common clinical critical disease with high mortality. The excessive release of cytokines from macrophages is the main cause of out-of-control immune response in sepsis. Mesenchymal stem cells (MSCs) are thought to be useful in adjunctive therapy of sepsis and related diseases, due to their function in immune regulation, anti-inflammatory, antibacterial, and tissue regeneration. Also there have been several successful cases in clinical treatment. Some previous studies have shown that MSCs regulate the function of macrophages through secreting cytokines and extracellular vesicles, or transferring mitochondria directly to target cells, which affects the progress of sepsis. Here, we review the regulation of MSCs on macrophages in sepsis, mainly focus on the regulation ways. We hope that will help to understand the immunological mechanism and also provide some clues for the clinical application of MSCs in the biotherapy of sepsis.
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Affiliation(s)
- Jie Xing
- Fenyang Hospital of Shanxi
Province, Fenyang, China
| | - Rui Wang
- School of Life Sciences, Northwestern Polytechnical
University, Xi’an, China
| | - Fengqi Cui
- School of Life Sciences, Northwestern Polytechnical
University, Xi’an, China
| | - Linlin Song
- Fenyang Hospital of Shanxi
Province, Fenyang, China
| | - Quanlin Ma
- Fenyang Hospital of Shanxi
Province, Fenyang, China,Quanlin Ma, Department of Cardiothoracic
Surgery, Fenyang Hospital of Shanxi Province, 186 Shengli Street, Fenyang
032200, China.
| | - Huiyun Xu
- School of Life Sciences, Northwestern Polytechnical
University, Xi’an, China,Huiyun Xu, School of Life Sciences,
Northwestern Polytechnical University, 127 Youyi Xilu, Xi’an 710072, China.
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25
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Wu D, Shi Y, Zhang H, Miao C. Epigenetic mechanisms of Immune remodeling in sepsis: targeting histone modification. Cell Death Dis 2023; 14:112. [PMID: 36774341 PMCID: PMC9922301 DOI: 10.1038/s41419-023-05656-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 02/01/2023] [Accepted: 02/03/2023] [Indexed: 02/13/2023]
Abstract
Sepsis is a life-threatening disorder disease defined as infection-induced dysregulated immune responses and multiple organ dysfunction. The imbalance between hyperinflammation and immunosuppression is a crucial feature of sepsis immunity. Epigenetic modifications, including histone modifications, DNA methylation, chromatin remodeling, and non-coding RNA, play essential roles in regulating sepsis immunity through epi-information independent of the DNA sequence. In recent years, the mechanisms of histone modification in sepsis have received increasing attention, with ongoing discoveries of novel types of histone modifications. Due to the capacity for prolonged effects on immune cells, histone modifications can induce immune cell reprogramming and participate in the long-term immunosuppressed state of sepsis. Herein, we systematically review current mechanisms of histone modifications involved in the regulation of sepsis, summarize their role in sepsis from an immune perspective and provide potential therapeutic opportunities targeting histone modifications in sepsis treatment.
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Affiliation(s)
- Dan Wu
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai, China
- Department of Anesthesiology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yuxin Shi
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai, China
- Department of Anesthesiology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Hao Zhang
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China.
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai, China.
- Department of Anesthesiology, Shanghai Medical College, Fudan University, Shanghai, China.
| | - Changhong Miao
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China.
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai, China.
- Department of Anesthesiology, Shanghai Medical College, Fudan University, Shanghai, China.
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26
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Zhao Q, Gong Z, Wang J, Fu L, Zhang J, Wang C, Miron RJ, Yuan Q, Zhang Y. A Zinc- and Calcium-Rich Lysosomal Nanoreactor Rescues Monocyte/Macrophage Dysfunction under Sepsis. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2205097. [PMID: 36596693 PMCID: PMC9951326 DOI: 10.1002/advs.202205097] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 12/05/2022] [Indexed: 05/31/2023]
Abstract
Sepsis is a dysregulation of the immune response to pathogens and has high morbidity and mortality worldwide. However, the unclear mapping and course of dysregulated immune cells currently hinders the development of advanced therapeutic strategies to treat sepsis. Here, evidence is provided using single-cell RNA sequencing from peripheral blood mononuclear cells in sepsis that pathogens attacking monocytes/macrophages disrupt their immune function. The results reveal an enormous decline in monocytes/macrophages in sepsis and chart the evolution of their impaired phagocytosis (Pha) capabilities. Inspired by these findings, nanoparticles, named "Alpha-MOFs," are developed that target dysfunctional monocytes/macrophages to actively (A) lift (L) Pha by the release of lysosome-sensitive ions from a mineralized metal-organic framework (MOF). Alpha-MOFs have good stability and biosafety in peripheral blood and efficiently targeted monocytes/macrophages. They also release calcium and zinc ions into monocyte/macrophage lysosomes to promote the Pha and degradation of bacteria. Taken together, these results suggest that Alpha-MOFs rescue monocytes/macrophages dysfunction and effectively improve their survival rate during sepsis.
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Affiliation(s)
- Qin Zhao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) & Key Laboratory of Oral BiomedicineMinistry of EducationSchool & Hospital of StomatologyWuhan UniversityWuhan430079P. R. China
- Medical Research InstituteSchool of MedicineWuhan UniversityWuhan430071P. R. China
| | - Zijian Gong
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) & Key Laboratory of Oral BiomedicineMinistry of EducationSchool & Hospital of StomatologyWuhan UniversityWuhan430079P. R. China
- Medical Research InstituteSchool of MedicineWuhan UniversityWuhan430071P. R. China
| | - Jiaolong Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) & Key Laboratory of Oral BiomedicineMinistry of EducationSchool & Hospital of StomatologyWuhan UniversityWuhan430079P. R. China
- Medical Research InstituteSchool of MedicineWuhan UniversityWuhan430071P. R. China
| | - Liangliang Fu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) & Key Laboratory of Oral BiomedicineMinistry of EducationSchool & Hospital of StomatologyWuhan UniversityWuhan430079P. R. China
- Medical Research InstituteSchool of MedicineWuhan UniversityWuhan430071P. R. China
| | - Jing Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) & Key Laboratory of Oral BiomedicineMinistry of EducationSchool & Hospital of StomatologyWuhan UniversityWuhan430079P. R. China
- Medical Research InstituteSchool of MedicineWuhan UniversityWuhan430071P. R. China
| | - Can Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) & Key Laboratory of Oral BiomedicineMinistry of EducationSchool & Hospital of StomatologyWuhan UniversityWuhan430079P. R. China
- Medical Research InstituteSchool of MedicineWuhan UniversityWuhan430071P. R. China
| | - Richard J. Miron
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) & Key Laboratory of Oral BiomedicineMinistry of EducationSchool & Hospital of StomatologyWuhan UniversityWuhan430079P. R. China
- Medical Research InstituteSchool of MedicineWuhan UniversityWuhan430071P. R. China
| | - Quan Yuan
- Institute of Chemical Biology and NanomedicineState Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha410082P. R. China
| | - Yufeng Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) & Key Laboratory of Oral BiomedicineMinistry of EducationSchool & Hospital of StomatologyWuhan UniversityWuhan430079P. R. China
- Medical Research InstituteSchool of MedicineWuhan UniversityWuhan430071P. R. China
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27
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Secreted immune metabolites that mediate immune cell communication and function. Trends Immunol 2022; 43:990-1005. [PMID: 36347788 DOI: 10.1016/j.it.2022.10.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/10/2022] [Accepted: 10/10/2022] [Indexed: 11/08/2022]
Abstract
Metabolites are emerging as essential factors for the immune system that are involved in both metabolic circuits and signaling cascades. Accumulated evidence suggests that altered metabolic programs initiated by the activation and maturation of immune cell types are accompanied by the delivery of various metabolites into the local environment. We propose that, in addition to protein/peptide ligands, secreted immune metabolites (SIMets) are essential components of immune communication networks that fine-tune immune responses under homeostatic and pathological conditions. We summarize recent advances in our understanding of SIMets and discuss the potential mechanisms by which some metabolites engage in immunological responses through receptor-, transporter-, and post-translational-mediated regulation. These insights may contribute to understanding physiology and developing effective therapeutics for inflammatory and immune-mediated diseases.
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Ma C, Liu H, Yang S, Li H, Liao X, Kang Y. The emerging roles and therapeutic potential of B cells in sepsis. Front Pharmacol 2022; 13:1034667. [PMID: 36425582 PMCID: PMC9679374 DOI: 10.3389/fphar.2022.1034667] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 10/26/2022] [Indexed: 01/03/2024] Open
Abstract
Sepsis is a life-threatening syndrome caused by anomalous host response to infection. The pathogenesis of sepsis is complex, and immune dysfunction is the central link in its occurrence and development. The sepsis immune response is not a local and transient process but a complex and continuous process involving all major cell types of innate and adaptive immunity. B cells are traditionally studied for their ability to produce antibodies in the context of mediating humoral immunity. However, over the past few years, B cells have been increasingly recognized as key modulators of adaptive and innate immunity, and they can participate in immune responses by presenting antigens, producing cytokines, and modulating other immune cells. Recently, increasing evidence links B-cell dysfunction to mechanisms of immune derangement in sepsis, which has drawn attention to the powerful properties of this unique immune cell type in sepsis. Here, we reviewed the dynamic alterations of B cells and their novel roles in animal models and patients with sepsis, and provided new perspectives for therapeutic strategies targeting B cells in sepsis.
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Affiliation(s)
- Chengyong Ma
- Center of Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Hanrui Liu
- Development and Related Diseases of Women and Children Key Laboratory of Sichuan Province, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Shuo Yang
- Center of Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Hong Li
- Center of Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Xuelian Liao
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Yan Kang
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
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Lepage M, Gossez M, Lukaszewicz AC, Monneret G, Venet F. Dysregulated expression of amino-acid and glucose transporters on circulating plasma cells in septic shock patients: a preliminary study. Intensive Care Med Exp 2022; 10:44. [PMID: 36310296 PMCID: PMC9618469 DOI: 10.1186/s40635-022-00472-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 10/17/2022] [Indexed: 12/02/2022] Open
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30
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Zhang T, Zhao J, Fu J, Chen G, Ma T. Improvement of the sepsis survival rate by adenosine 2a receptor antagonists depends on immune regulatory functions of regulatory T-cells. Front Immunol 2022; 13:996446. [PMID: 36148230 PMCID: PMC9485829 DOI: 10.3389/fimmu.2022.996446] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 08/18/2022] [Indexed: 11/13/2022] Open
Abstract
Adenosine shows a significant immunosuppressive effect in sepsis via binding to the adenosine 2a receptor (A2aR). Both genetic deletion and pharmacological inhibition of the A2aR may improve survival in sepsis. However, available research on this protective mechanism is quite limited. We used an A2aR antagonist (ZM241385) to treat a cecal ligation and puncture model of normal mice or regulatory T-cell (Treg)-depletion mice and found that the protective effect of ZM241385 is dependent on Tregs. Mechanically, A2aR inactivation was associated with decreased frequencies and reduced function of Foxp3+ Tregs, as evidenced by Foxp3 and CTLA-4 expression and classical effector T-cell proliferative assays, suggesting Treg modulation is a potential protective mechanism against sepsis. Simultaneously, the function and quantity of abdominal neutrophils were improved with ZM241385 treatment. To see if a link exists between them, Tregs and neutrophils were co-cultured, and it was found that ZM241385 blocked the inhibitory effect of Tregs on neutrophils. According to our research, Tregs play a key role in how A2aR antagonists improve sepsis prognosis and bacterial clearance.
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Affiliation(s)
- Teng Zhang
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Jie Zhao
- Department of Intensive Care Unit, Tianjin Medical University General Hospital, Tianjin, China
| | - Jingnan Fu
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Guibing Chen
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Tao Ma
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
- *Correspondence: Tao Ma,
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Zhang T, Yu-Jing L, Ma T. The immunomodulatory function of adenosine in sepsis. Front Immunol 2022; 13:936547. [PMID: 35958599 PMCID: PMC9357910 DOI: 10.3389/fimmu.2022.936547] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 07/06/2022] [Indexed: 12/03/2022] Open
Abstract
Sepsis is an unsolved clinical condition with a substantial mortality rate in the hospital. Despite decades of research, no effective treatments for sepsis exists. The role of adenosine in the pathogenesis of sepsis is discussed in this paper. Adenosine is an essential endogenous molecule that activates the A1, A2a, A2b, and A3 adenosine receptors to regulate tissue function. These receptors are found on a wide range of immune cells and bind adenosine, which helps to control the immune response to inflammation. The adenosine receptors have many regulatory activities that determine the onset and progression of the disease, which have been discovered via the use of animal models. A greater understanding of the role of adenosine in modulating the immune system has sparked hope that an adenosine receptor-targeted treatment may be used one day to treat sepsis.
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Affiliation(s)
- Teng Zhang
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Li Yu-Jing
- Department of Neurology, Tianjin Medical University General Hospital, Tianjin, China
| | - Tao Ma
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
- *Correspondence: Tao Ma,
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Zhou T, Qian H, Zheng N, Lu Q, Han Y. GYY4137 ameliorates sepsis-induced cardiomyopathy via NLRP3 pathway. Biochim Biophys Acta Mol Basis Dis 2022; 1868:166497. [PMID: 35868482 DOI: 10.1016/j.bbadis.2022.166497] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 07/02/2022] [Accepted: 07/13/2022] [Indexed: 01/02/2023]
Abstract
Sepsis-induced cardiomyopathy (SICM) has a poor prognosis, with no effective therapeutic strategy currently. This study aimed to explore the mechanism underlying SICM and investigate the protective role of the hydrogen sulfide (H2S) donor GYY4137. This study included patients with SICM and animal models of SICM with wild-type and Nlrp3-/- mice, which were treated with or without GYY4137. Echocardiography, ELISA, TUNEL staining, and immunofluorescence were used to investigate phenotypic alterations. Serum levels of H2S and cytokines were measured. Inflammatory cell infiltration in the myocardial tissue was identified using immunohistochemistry and immunofluorescence. RNA expression profiles were identified using RNA sequencing. The protective mechanism of GYY4137 was further validated in the crosstalk between macrophages and cardiomyocytes using immunoblotting, real-time polymerase chain reaction (RT-PCR), and immunofluorescence when conditional medium of macrophages boosted by LPS were co-cultured with cardiomyocytes. Patients and animal models of SICM presented with lower serum H2S levels and heart dysfunction. GYY4137 reduced macrophage infiltration in septic heart tissue. GO analysis suggested that GYY4137 was involved in the inflammatory process. GYY4137 inhibited NLRP3 inflammasome activity in macrophages, reduced the secretion of inflammatory factors, and decreased the production of reactive oxygen species (ROS) in cardiomyocytes, thus exerting protective effects against SICM. We further found that the protective effects of GYY4137 were absent in Nlrp3-knockout models. GYY4137 ameliorates myocardial injury in SICM via the NLRP3 pathway by inhibiting the inflammatory response and reducing the production of myocardial ROS.
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Affiliation(s)
- Tao Zhou
- Department of Critical Care Medicine, Geriatric ICU, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China
| | - Huitao Qian
- Department of Critical Care Medicine, Geriatric ICU, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China
| | - Nan Zheng
- Department of Critical Care Medicine, Geriatric ICU, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China
| | - Qiulun Lu
- Key Laboratory of Cardiovascular and Cerebrovascular Medicine, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing 211166, China.
| | - Yi Han
- Department of Critical Care Medicine, Geriatric ICU, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China.
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Zhou D, Yao M, Zhang L, Chen Y, He J, Zhang Y, Xu H, Zhou P, Zhong W, Yao Z, Zhou J. Adenosine Alleviates Necrotizing Enterocolitis by Enhancing the Immunosuppressive Function of Myeloid-Derived Suppressor Cells in Newborns. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 209:401-411. [PMID: 35777852 DOI: 10.4049/jimmunol.2200142] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 05/16/2022] [Indexed: 06/15/2023]
Abstract
Necrotizing enterocolitis (NEC) is a common disorder in premature infants that is characterized by hyperinflammation and severe necrosis in the intestine. The pathogenesis of NEC remains to be elucidated. In this study, we demonstrate that adenosine, a metabolite more abundant in infants than in adults, plays an important role in the prevention of NEC. Administration of adenosine or its analog, adenosine-5'-N-ethyluronamide (NECA), dramatically relieved the severity of NEC in neonatal mice. Meanwhile, adenosine treatment significantly enhanced the immunosuppressive function, antibacterial activity, and migration of myeloid-derived suppressor cells (MDSCs). However, depletion of MDSCs or inhibition of their migration using the CXCR2 inhibitor SB225002 almost completely abrogated the protective effect of adenosine on NEC. Mechanistic studies showed that MDSCs in newborns expressed abundant adenosine receptor A2B (A2BR) that elicits intracellular cAMP signaling and its downstream target NF-κB. Importantly, intestinal tissues from patients with NEC showed significantly lower infiltration of A2BR-positive MDSCs than those from healthy donors. These observations revealed that adenosine-induced MDSCs represent an essential immune axis for intestinal homeostasis in newborns.
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Affiliation(s)
- Dongmei Zhou
- Key Laboratory of Immune Microenvironment and Disease of the Ministry of Education, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China; and
| | - Meng Yao
- Key Laboratory of Immune Microenvironment and Disease of the Ministry of Education, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China; and
| | - Lijuan Zhang
- Key Laboratory of Immune Microenvironment and Disease of the Ministry of Education, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China; and
| | - Yingying Chen
- Key Laboratory of Immune Microenvironment and Disease of the Ministry of Education, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China; and
| | - Juan He
- Guangzhou Women and Children's Medical Center, Guangzhou, China
| | - Yuxin Zhang
- Key Laboratory of Immune Microenvironment and Disease of the Ministry of Education, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China; and
| | - Haixu Xu
- Key Laboratory of Immune Microenvironment and Disease of the Ministry of Education, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China; and
| | - Pan Zhou
- Key Laboratory of Immune Microenvironment and Disease of the Ministry of Education, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China; and
| | - Wei Zhong
- Guangzhou Women and Children's Medical Center, Guangzhou, China
| | - Zhi Yao
- Key Laboratory of Immune Microenvironment and Disease of the Ministry of Education, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China; and
| | - Jie Zhou
- Key Laboratory of Immune Microenvironment and Disease of the Ministry of Education, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China; and
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Courey-Ghaouzi AD, Kleberg L, Sundling C. Alternative B Cell Differentiation During Infection and Inflammation. Front Immunol 2022; 13:908034. [PMID: 35812395 PMCID: PMC9263372 DOI: 10.3389/fimmu.2022.908034] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 05/30/2022] [Indexed: 01/02/2023] Open
Abstract
Long-term protective immunity to infectious disease depends on cell-mediated and humoral immune responses. Induction of a strong humoral response relies on efficient B cell activation and differentiation to long-lived plasma cells and memory B cells. For many viral or bacterial infections, a single encounter is sufficient to induce such responses. In malaria, the induction of long-term immunity can take years of pathogen exposure to develop, if it occurs at all. This repeated pathogen exposure and suboptimal immune response coincide with the expansion of a subset of B cells, often termed atypical memory B cells. This subset is present at low levels in healthy individuals as well but it is observed to expand in an inflammatory context during acute and chronic infection, autoimmune diseases or certain immunodeficiencies. Therefore, it has been proposed that this subset is exhausted, dysfunctional, or potentially autoreactive, but its actual role has remained elusive. Recent reports have provided new information regarding both heterogeneity and expansion of these cells, in addition to indications on their potential role during normal immune responses to infection or vaccination. These new insights encourage us to rethink how and why they are generated and better understand their role in our complex immune system. In this review, we will focus on recent advances in our understanding of these enigmatic cells and highlight the remaining gaps that need to be filled.
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Affiliation(s)
- Alan-Dine Courey-Ghaouzi
- Division of Infectious Diseases, Department of Medicine Solna and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
- Department of Infectious Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Linn Kleberg
- Division of Infectious Diseases, Department of Medicine Solna and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
- Department of Infectious Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Christopher Sundling
- Division of Infectious Diseases, Department of Medicine Solna and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
- Department of Infectious Diseases, Karolinska University Hospital, Stockholm, Sweden
- *Correspondence: Christopher Sundling,
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Urso A, Prince A. Anti-Inflammatory Metabolites in the Pathogenesis of Bacterial Infection. Front Cell Infect Microbiol 2022; 12:925746. [PMID: 35782110 PMCID: PMC9240774 DOI: 10.3389/fcimb.2022.925746] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 05/23/2022] [Indexed: 01/13/2023] Open
Abstract
Host and pathogen metabolism have a major impact on the outcome of infection. The microenvironment consisting of immune and stromal cells drives bacterial proliferation and adaptation, while also shaping the activity of the immune system. The abundant metabolites itaconate and adenosine are classified as anti-inflammatory, as they help to contain the local damage associated with inflammation, oxidants and proteases. A growing literature details the many roles of these immunometabolites in the pathogenesis of infection and their diverse functions in specific tissues. Some bacteria, notably P. aeruginosa, actively metabolize these compounds, others, such as S. aureus respond by altering their own metabolic programs selecting for optimal fitness. For most of the model systems studied to date, these immunometabolites promote a milieu of tolerance, limiting local immune clearance mechanisms, along with promoting bacterial adaptation. The generation of metabolites such as adenosine and itaconate can be host protective. In the setting of acute inflammation, these compounds also represent potential therapeutic targets to prevent infection.
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Affiliation(s)
| | - Alice Prince
- *Correspondence: Alice Prince, ; Andreacarola Urso,
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36
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Li Z, Kou L, Fu X, Xie Z, Xu M, Guo L, Lin T, Gong S, Zhang S, Liu M. Design, synthesis, and biological evaluation of triazole-pyrimidine-methylbenzonitrile derivatives as dual A 2A/A 2B adenosine receptor antagonists. J Enzyme Inhib Med Chem 2022; 37:1514-1526. [PMID: 35616298 PMCID: PMC9154793 DOI: 10.1080/14756366.2022.2077731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
A series of novel dual A2A/A2B AR antagonists based on the triazole-pyrimidine-methylbenzonitrile core were designed and synthesised. The A2A AR antagonist cAMP functional assay results were encouraging for most target compounds containing quinoline or its open-ring bioisosteres. In addition, compound 7i displayed better inhibitory activity on A2B AR (IC50 14.12 nM) and higher potency in IL-2 production than AB928. Moreover, molecular docking studies were carried out to explain the rationality of molecular design and the activity of compound 7i. Further studies on 7f and 7i revealed good liver microsomes stabilities and acceptable in vivo PK profiles. This study provides insight into the future development of dual A2A/A2B AR antagonists for cancer immunotherapy.
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Affiliation(s)
- Zhi Li
- School of Pharmacy, Binzhou Medical University, Yantai, China
| | - Lijuan Kou
- School of Pharmacy, Binzhou Medical University, Yantai, China
| | - Xinzhen Fu
- School of Pharmacy, Binzhou Medical University, Yantai, China
| | - Zeping Xie
- School of Pharmacy, Binzhou Medical University, Yantai, China
| | - Maolei Xu
- School of Pharmacy, Binzhou Medical University, Yantai, China
| | - Lin Guo
- School of Pharmacy, Binzhou Medical University, Yantai, China
| | | | | | - Shumin Zhang
- School of Pharmacy, Binzhou Medical University, Yantai, China
| | - Ming Liu
- School of Pharmacy, Binzhou Medical University, Yantai, China
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Dang VD, Mohr E, Szelinski F, Le TA, Ritter J, Hinnenthal T, Stefanski AL, Schrezenmeier E, Ocvirk S, Hipfl C, Hardt S, Cheng Q, Hiepe F, Löhning M, Dörner T, Lino AC. CD39 and CD326 Are Bona Fide Markers of Murine and Human Plasma Cells and Identify a Bone Marrow Specific Plasma Cell Subpopulation in Lupus. Front Immunol 2022; 13:873217. [PMID: 35464469 PMCID: PMC9024045 DOI: 10.3389/fimmu.2022.873217] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 03/15/2022] [Indexed: 12/18/2022] Open
Abstract
Antibody-secreting cells (ASCs) contribute to immunity through production of antibodies and cytokines. Identification of specific markers of ASC would allow selective targeting of these cells in several disease contexts. Here, we performed an unbiased, large-scale protein screening, and identified twelve new molecules that are specifically expressed by murine ASCs. Expression of these markers, particularly CD39, CD81, CD130, and CD326, is stable and offers an improved resolution for ASC identification. We accessed their expression in germ-free conditions and in T cell deficient mice, showing that at least in part their expression is controlled by microbial- and T cell-derived signals. Further analysis of lupus mice revealed the presence of a subpopulation of LAG-3– plasma cells, co-expressing high amounts of CD39 and CD326 in the bone marrow. This population was IgM+ and correlated with IgM anti-dsDNA autoantibodies in sera. Importantly, we found that CD39, CD81, CD130, and CD326 are also expressed by human peripheral blood and bone marrow ASCs. Our data provide innovative insights into ASC biology and function in mice and human, and identify an intriguing BM specific CD39++CD326++ ASC subpopulation in autoimmunity.
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Affiliation(s)
- Van Duc Dang
- Deutsches Rheuma-Forschungszentrum, A Leibniz Institute, Berlin, Germany
- Department of Rheumatology and Clinical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany
- Faculty of Biology, VNU University of Science, Vietnam National University, Hanoi, Vietnam
| | - Elodie Mohr
- Deutsches Rheuma-Forschungszentrum, A Leibniz Institute, Berlin, Germany
| | - Franziska Szelinski
- Deutsches Rheuma-Forschungszentrum, A Leibniz Institute, Berlin, Germany
- Department of Rheumatology and Clinical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Tuan Anh Le
- Deutsches Rheuma-Forschungszentrum, A Leibniz Institute, Berlin, Germany
- Department of Rheumatology and Clinical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Jacob Ritter
- Department of Rheumatology and Clinical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany
- Berlin Institute of Health (BIH), Berlin, Germany
| | - Timo Hinnenthal
- Deutsches Rheuma-Forschungszentrum, A Leibniz Institute, Berlin, Germany
| | - Ana-Luisa Stefanski
- Department of Rheumatology and Clinical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Eva Schrezenmeier
- Berlin Institute of Health (BIH), Berlin, Germany
- Department of Nephrology and Medical Intensive Care, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Soeren Ocvirk
- Intestinal Microbiology Research Group, Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
| | - Christian Hipfl
- Centre for Musculoskeletal Surgery, Department of Orthopedics, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Sebastian Hardt
- Centre for Musculoskeletal Surgery, Department of Orthopedics, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Qingyu Cheng
- Deutsches Rheuma-Forschungszentrum, A Leibniz Institute, Berlin, Germany
- Department of Rheumatology and Clinical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Falk Hiepe
- Deutsches Rheuma-Forschungszentrum, A Leibniz Institute, Berlin, Germany
- Department of Rheumatology and Clinical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Max Löhning
- Deutsches Rheuma-Forschungszentrum, A Leibniz Institute, Berlin, Germany
- Department of Rheumatology and Clinical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Thomas Dörner
- Deutsches Rheuma-Forschungszentrum, A Leibniz Institute, Berlin, Germany
- Department of Rheumatology and Clinical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Andreia C. Lino
- Deutsches Rheuma-Forschungszentrum, A Leibniz Institute, Berlin, Germany
- Department of Rheumatology and Clinical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany
- *Correspondence: Andreia C. Lino,
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38
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Eberhardt N, Bergero G, Mazzocco Mariotta YL, Aoki MP. Purinergic modulation of the immune response to infections. Purinergic Signal 2022; 18:93-113. [PMID: 34997903 PMCID: PMC8742569 DOI: 10.1007/s11302-021-09838-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 12/17/2021] [Indexed: 02/07/2023] Open
Abstract
Infectious diseases are caused by the invasion of pathogenic microorganisms such as fungi, bacteria, viruses, and parasites. After infection, disease progression relies on the complex interplay between the host immune response and the microorganism evasion strategies. The host's survival depends on its ability to mount an efficient protective anti-microbial response to accomplish pathogen clearance while simultaneously preventing tissue injury by keeping under control the excessive inflammatory process. The purinergic system has the dual function of regulating the immune response and triggering effector antimicrobial mechanisms. This review provides an overview of the current knowledge of the modulation of innate and adaptive immunity driven by the purinergic system during parasitic, bacterial and viral infections.
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Affiliation(s)
- Natalia Eberhardt
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET) - Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Present Address: Department of Medicine, Leon H. Charney Division of Cardiology, New York University School of Medicine, New York, USA
| | - Gastón Bergero
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET) - Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Yanina L. Mazzocco Mariotta
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET) - Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - M. Pilar Aoki
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET) - Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Haya de La Torre and Medina Allende, Ciudad Universitaria, CP 5000 Córdoba, Argentina
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39
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Dai XK, Ding ZX, Tan YY, Bao HR, Wang DY, Zhang H. Neutrophils inhibit CD8 + T cells immune response by arginase-1 signaling in patients with sepsis. World J Emerg Med 2022; 13:266-273. [PMID: 35837557 PMCID: PMC9233973 DOI: 10.5847/wjem.j.1920-8642.2022.068] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 02/24/2022] [Indexed: 11/26/2023] Open
Abstract
BACKGROUND Patients with sepsis often exhibit an acute inflammatory response, followed by an immunosuppressive phase with a poor immune response. However, the underlying mechanisms have not been fully elucidated. METHODS We sought to comprehensively characterize the transcriptional changes in neutrophils of patients with sepsis by transcriptome sequencing. Additionally, we conducted a series of experiments, including real-time quantitative polymerase chain reaction (RT-qPCR) and flow cytometry to investigate the role of arginase-1 signaling in sepsis. RESULTS Through the analysis of gene expression profiles, we identified that the negative regulation of T cell activation signaling was enriched, and the expression of arginase-1 was high in neutrophils from patients with sepsis. Furthermore, we conducted flow cytometry and found that the function of CD8+ T cells in septic patients was impaired. Moreover, neutrophils from septic patients inhibited the percentage of polyfunctional effector CD8+ T cells through arginase-1. Additionally, the proportions of granzyme B+IFN-γ+CD8+ T and TNF-α+IFN-γ+CD8+ T cells increased after inhibition of arginase-1 signaling. CONCLUSION The impaired effector function of CD8+ T cells could be restored by blocking arginase-1 signaling in patients with sepsis.
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Affiliation(s)
- Xiao-kang Dai
- Department of Emergency, the First Affiliated Hospital of Anhui Medical University, Hefei 230027, China
| | - Zhen-xing Ding
- Department of Emergency, the First Affiliated Hospital of Anhui Medical University, Hefei 230027, China
| | - Yuan-yuan Tan
- Department of Emergency, the First Affiliated Hospital of Anhui Medical University, Hefei 230027, China
| | - Hua-rui Bao
- Department of Emergency, the First Affiliated Hospital of Anhui Medical University, Hefei 230027, China
| | - Dong-yao Wang
- Department of Hematology, the First Affiliated Hospital of University of Science and Technology of China, Division of Life Sciences and Medicine, Hefei 230001, China
- Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, the Chinese Academy of Sciences Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei 230001, China
- Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical College, Bengbu 233030, China
| | - Hong Zhang
- Department of Emergency, the First Affiliated Hospital of Anhui Medical University, Hefei 230027, China
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