1
|
Qi Y, Wang H, Wu J, Wang R, Xu Z, Cui X, Liu Z. Microfluidic device reveals new insights into impairment of neutrophil transmigration in patients with sepsis. Biosens Bioelectron 2024; 260:116460. [PMID: 38843769 DOI: 10.1016/j.bios.2024.116460] [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: 02/26/2024] [Revised: 05/10/2024] [Accepted: 05/31/2024] [Indexed: 06/15/2024]
Abstract
Neutrophils need to migrate through tight tissue spaces to eliminate pathogens, but their movement is often hindered by their large and stiff nuclei. Neutrophil migration is impaired in sepsis patients, but it is unclear whether this defect is related to the deformability of their nuclei. Herein, we designed microfluidic devices with micron-scale narrow slits to simulate biological barriers. This setup allowed us to observe and record neutrophil movement and nuclear deformation in real-time. We also developed a method for morphological analysis to quantify nucleus deformation in numerous individual cells. Our studies showed that neutrophils from healthy individuals could adjust their nuclear shape to squeeze through these constrictions, whereas those from sepsis patients demonstrated less flexibility. Neutrophils with rigid nuclei struggled to pass through narrow gaps and were more likely to rupture under pressure. These findings suggest that the migration defects of neutrophils observed in sepsis may be attributed to the inability of neutrophils to deform their nuclei, highlighting the crucial role of microfluidic technologies in offering new insights into migration defects under pathological conditions.
Collapse
Affiliation(s)
- Yan Qi
- Department of Immunology, College of Basic Medical Sciences, Jilin University, Changchun, 130021, China
| | - Heyuan Wang
- Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, 130021, China
| | - Jiandong Wu
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Runnan Wang
- Department of Genetics, College of Basic Medical Sciences, Jilin University, Changchun, 130021, China
| | - Zhihao Xu
- Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, 130021, China
| | - Xueling Cui
- Department of Genetics, College of Basic Medical Sciences, Jilin University, Changchun, 130021, China.
| | - Zhonghui Liu
- Department of Immunology, College of Basic Medical Sciences, Jilin University, Changchun, 130021, China.
| |
Collapse
|
2
|
Kumar S, Dikshit M. Nitric Oxide: Regulation and Function in Neutrophil Immune Responses. Antioxid Redox Signal 2024; 40:998-1024. [PMID: 38251644 DOI: 10.1089/ars.2022.0220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Affiliation(s)
- Sachin Kumar
- Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Postal Staff College Area, Ghaziabad, India
| | - Madhu Dikshit
- Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow, India
| |
Collapse
|
3
|
Kang ZY, Huang QY, Zhen NX, Xuan NX, Zhou QC, Zhao J, Cui W, Zhang ZC, Tian BP. Heterogeneity of immune cells and their communications unveiled by transcriptome profiling in acute inflammatory lung injury. Front Immunol 2024; 15:1382449. [PMID: 38745657 PMCID: PMC11092984 DOI: 10.3389/fimmu.2024.1382449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 04/03/2024] [Indexed: 05/16/2024] Open
Abstract
Background Acute Respiratory Distress Syndrome (ARDS) or its earlier stage Acute lung injury (ALI), is a worldwide health concern that jeopardizes human well-being. Currently, the treatment strategies to mitigate the incidence and mortality of ARDS are severely restricted. This limitation can be attributed, at least in part, to the substantial variations in immunity observed in individuals with this syndrome. Methods Bulk and single cell RNA sequencing from ALI mice and single cell RNA sequencing from ARDS patients were analyzed. We utilized the Seurat program package in R and cellmarker 2.0 to cluster and annotate the data. The differential, enrichment, protein interaction, and cell-cell communication analysis were conducted. Results The mice with ALI caused by pulmonary and extrapulmonary factors demonstrated differential expression including Clec4e, Retnlg, S100a9, Coro1a, and Lars2. We have determined that inflammatory factors have a greater significance in extrapulmonary ALI, while multiple pathways collaborate in the development of pulmonary ALI. Clustering analysis revealed significant heterogeneity in the relative abundance of immune cells in different ALI models. The autocrine action of neutrophils plays a crucial role in pulmonary ALI. Additionally, there was a significant increase in signaling intensity between B cells and M1 macrophages, NKT cells and M1 macrophages in extrapulmonary ALI. The CXCL, CSF3 and MIF, TGFβ signaling pathways play a vital role in pulmonary and extrapulmonary ALI, respectively. Moreover, the analysis of human single-cell revealed DCs signaling to monocytes and neutrophils in COVID-19-associated ARDS is stronger compared to sepsis-related ARDS. In sepsis-related ARDS, CD8+ T and Th cells exhibit more prominent signaling to B-cell nucleated DCs. Meanwhile, both MIF and CXCL signaling pathways are specific to sepsis-related ARDS. Conclusion This study has identified specific gene signatures and signaling pathways in animal models and human samples that facilitate the interaction between immune cells, which could be targeted therapeutically in ARDS patients of various etiologies.
Collapse
Affiliation(s)
- Zhi-ying Kang
- Department of Critical Care Medicine, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Qian-yu Huang
- Department of Critical Care Medicine, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Ning-xin Zhen
- Department of Critical Care Medicine, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Nan-xia Xuan
- Department of Critical Care Medicine, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Qi-chao Zhou
- Department of Critical Care Medicine, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Jie Zhao
- Department of Critical Care Medicine, The First Affiliated Hospital, Ningbo University, Ningbo, Zhejiang, China
| | - Wei Cui
- Department of Critical Care Medicine, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Zhao-cai Zhang
- Department of Critical Care Medicine, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Bao-ping Tian
- Department of Critical Care Medicine, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| |
Collapse
|
4
|
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.
Collapse
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
| |
Collapse
|
5
|
Bruserud Ø, Mosevoll KA, Bruserud Ø, Reikvam H, Wendelbo Ø. The Regulation of Neutrophil Migration in Patients with Sepsis: The Complexity of the Molecular Mechanisms and Their Modulation in Sepsis and the Heterogeneity of Sepsis Patients. Cells 2023; 12:cells12071003. [PMID: 37048076 PMCID: PMC10093057 DOI: 10.3390/cells12071003] [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: 02/01/2023] [Revised: 03/21/2023] [Accepted: 03/22/2023] [Indexed: 03/29/2023] Open
Abstract
Sepsis is defined as life-threatening organ dysfunction caused by a dysregulated host response to infection. Common causes include gram-negative and gram-positive bacteria as well as fungi. Neutrophils are among the first cells to arrive at an infection site where they function as important effector cells of the innate immune system and as regulators of the host immune response. The regulation of neutrophil migration is therefore important both for the infection-directed host response and for the development of organ dysfunctions in sepsis. Downregulation of CXCR4/CXCL12 stimulates neutrophil migration from the bone marrow. This is followed by transmigration/extravasation across the endothelial cell barrier at the infection site; this process is directed by adhesion molecules and various chemotactic gradients created by chemotactic cytokines, lipid mediators, bacterial peptides, and peptides from damaged cells. These mechanisms of neutrophil migration are modulated by sepsis, leading to reduced neutrophil migration and even reversed migration that contributes to distant organ failure. The sepsis-induced modulation seems to differ between neutrophil subsets. Furthermore, sepsis patients should be regarded as heterogeneous because neutrophil migration will possibly be further modulated by the infecting microorganisms, antimicrobial treatment, patient age/frailty/sex, other diseases (e.g., hematological malignancies and stem cell transplantation), and the metabolic status. The present review describes molecular mechanisms involved in the regulation of neutrophil migration; how these mechanisms are altered during sepsis; and how bacteria/fungi, antimicrobial treatment, and aging/frailty/comorbidity influence the regulation of neutrophil migration.
Collapse
Affiliation(s)
- Øystein Bruserud
- Leukemia Research Group, Department of Clinical Science, University of Bergen, 5021 Bergen, Norway
- Section for Hematology, Department of Medicine, Haukeland University Hospital, 5021 Bergen, Norway
- Correspondence:
| | - Knut Anders Mosevoll
- Section for Infectious Diseases, Department of Medicine, Haukeland University Hospital, 5021 Bergen, Norway
- Section for Infectious Diseases, Department of Clinical Research, University of Bergen, 5021 Bergen, Norway
| | - Øyvind Bruserud
- Department for Anesthesiology and Intensive Care, Haukeland University Hospital, 5021 Bergen, Norway
| | - Håkon Reikvam
- Leukemia Research Group, Department of Clinical Science, University of Bergen, 5021 Bergen, Norway
- Section for Hematology, Department of Medicine, Haukeland University Hospital, 5021 Bergen, Norway
| | - Øystein Wendelbo
- Section for Infectious Diseases, Department of Medicine, Haukeland University Hospital, 5021 Bergen, Norway
- Faculty of Health, VID Specialized University, Ulriksdal 10, 5009 Bergen, Norway
| |
Collapse
|
6
|
Pari B, Gallucci M, Ghigo A, Brizzi MF. Insight on Infections in Diabetic Setting. Biomedicines 2023; 11:971. [PMID: 36979949 PMCID: PMC10046483 DOI: 10.3390/biomedicines11030971] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/08/2023] [Accepted: 03/16/2023] [Indexed: 03/30/2023] Open
Abstract
The correlation between diabetes mellitus and infectious diseases is widely recognized. DM patients are characterized by the impaired function of the immune system. This translates into the occurrence of a variety of infections, including urinary tract, skin and surgical site infections, pneumonia, tuberculosis, and, more recently, SARS-CoV-2. Hyperglycemia has been identified as a relevant factor contributing to unfavorable outcomes in hospitalized patients including SARS-CoV-2 patients. Several studies have been performed proving that to maintain the proper and stringent monitoring of glycemia, a balanced diet and physical activity is mandatory to reduce the risk of infections and their associated complications. This review is focused on the mechanisms accounting for the increased susceptibility of DM patients to infections, with particular attention to the impact of newly introduced hypoglycemic drugs in sepsis management.
Collapse
Affiliation(s)
| | | | | | - Maria Felice Brizzi
- Department of Medical Sciences, University of Turin, Corso Dogliotti 14, 10126 Turin, Italy
| |
Collapse
|
7
|
Borges VDF, Galant LS, Kanashiro A, Castanheira FVES, Monteiro VVS, Duarte DÂ, Rodrigues FC, Silva CMDS, Schneider AH, Cebinelli GCM, de Lima MHF, Viola JPDB, Cunha TM, da Costa Neto CM, Alves-Filho JCF, Pupo AS, Cunha FDQ. FK506 impairs neutrophil migration that results in increased polymicrobial sepsis susceptibility. Inflamm Res 2023; 72:203-215. [PMID: 36401631 DOI: 10.1007/s00011-022-01669-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 11/02/2022] [Accepted: 11/06/2022] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE This study aimed to investigate the effects of FK506 on experimental sepsis immunopathology. It investigated the effect of FK506 on leukocyte recruitment to the site of infection, systemic cytokine production, and organ injury in mice with sepsis. METHODS Using a murine cecal ligation and puncture (CLP) peritonitis model, the experiments were performed with wild-type (WT) mice and mice deficient in the gene Nfat1 (Nfat1-/-) in the C57BL/6 background. Animals were treated with 2.0 mg/kg of FK506, subcutaneously, 1 h before the sepsis model, twice a day (12 h/12 h). The number of bacteria colony forming units (CFU) was manually counted. The number of neutrophils in the lungs was estimated by the myeloperoxidase (MPO) assay. The expression of CXCR2 in neutrophils was determined using flow cytometry analysis. The expression of inflammatory cytokines in macrophage was determined using ELISA. The direct effect of FK506 on CXCR2 internalization was evaluated using HEK-293T cells after CXCL2 stimulation by the BRET method. RESULTS FK506 treatment potentiated the failure of neutrophil migration into the peritoneal cavity, resulting in bacteremia and an exacerbated systemic inflammatory response, which led to higher organ damage and mortality rates. Failed neutrophil migration was associated with elevated CXCL2 chemokine plasma levels and lower expression of the CXCR2 receptor on circulating neutrophils compared with non-treated CLP-induced septic mice. FK506 did not directly affect CXCL2-induced CXCR2 internalization by transfected HEK-293 cells or mice neutrophils, despite increasing CXCL2 release by LPS-treated macrophages. Finally, the CLP-induced response of Nfat1-/- mice was similar to those observed in the Nfat1+/+ genotype, suggesting that the FK506 effect is not dependent on the NFAT1 pathway. CONCLUSION Our data indicate that the increased susceptibility to infection of FK506-treated mice is associated with failed neutrophil migration due to the reduced membrane availability of CXCR2 receptors in response to exacerbated levels of circulating CXCL2.
Collapse
Affiliation(s)
- Vanessa de Fátima Borges
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Leticia Selinger Galant
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Alexandre Kanashiro
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Fernanda Vargas E Silva Castanheira
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Valter Vinícius Silva Monteiro
- Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Diego Ângelo Duarte
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Filipe Camargo Rodrigues
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Camila Meirelles de Souza Silva
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Ayda Henriques Schneider
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Guilherme Cesar Martelossi Cebinelli
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Mikhael Haruo Fernandes de Lima
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | | | - Thiago Mattar Cunha
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Claudio Miguel da Costa Neto
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - José Carlos Farias Alves-Filho
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - André Sampaio Pupo
- Department of Biophysics and Pharmacology, Institute of Biosciences, University of São Paulo State (UNESP), Botucatu, São Paulo, Brazil
| | - Fernando de Queiroz Cunha
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil. .,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.
| |
Collapse
|
8
|
Liu N, Bauer M, Press AT. The immunological function of CXCR2 in the liver during sepsis. J Inflamm (Lond) 2022; 19:23. [DOI: 10.1186/s12950-022-00321-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 11/15/2022] [Indexed: 12/02/2022] Open
Abstract
Abstract
Background
The chemokine receptor CXCR2 and its ligands, especially CXCL8, are crucial mediators for the progression of liver inflammation and liver failure in sepsis. Neutrophils have the highest CXCR2 expression in mice and humans, and their activation via CXCL8 facilitates their migration to the inflamed liver for the clearance of the pathogens and, in turn, the inflammation.
Main body
In sepsis, the inflammatory insult causes extensive neutrophil migration to the liver that overwhelms the immune response. To compensate for the strong receptor activation, CXCR2 desensitizes, incapacitating the immune cells to efficiently clear pathogens, causing further life-threatening liver damage and uncontrolled pathogen spread.
Conclusion
CXCR2 function during infection strongly depends on the expressing cell type. It signals pro- and anti-inflammatory effects that may prompt novel cell-type-specific CXCR2-directed therapeutics.
Collapse
|
9
|
Chan KS, Chia CTW, Shelat VG. Demographics, Radiological Findings, and Clinical Outcomes of Klebsiella pneumonia vs. Non- Klebsiella pneumoniae Pyogenic Liver Abscess: A Systematic Review and Meta-Analysis with Trial Sequential Analysis. Pathogens 2022; 11:pathogens11090976. [PMID: 36145408 PMCID: PMC9505935 DOI: 10.3390/pathogens11090976] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/21/2022] [Accepted: 08/25/2022] [Indexed: 02/05/2023] Open
Abstract
Pyogenic liver abscess (PLA) is a common cause of hepatobiliary sepsis. Klebsiella pneumoniae (KP) is the most common organism causing PLA. Evidence is scarce on the demographics, radiological findings, and outcomes of KPPLA versus non-KPPLA (N-KPPLA). PubMed, Embase, The Cochrane Library, and Scopus were systematically searched until 14 May 2022 for studies comparing KPPLA and N-KPPLA. Exclusion criteria were single-arm studies. Primary outcomes were mortality (30-day/in-hospital) and metastatic complications. There were 16 studies, including 5127 patients (KPPLA n = 3305, N-KPPLA n = 1822). Patients with KPPLA were younger (mean difference: −2.04 years, p = 0.02). History of hepatobiliary disease (Odds ratio (OR) 0.30, 95% CI: 0.20, 0.46) and malignancy (OR 0.26, 95% CI: 0.16, 0.42) were less common in KPPLA. KPPLA was associated with lower incidence of multiple abscesses (OR 0.52, 95% CI: 0.35, 0.76, p < 0.001) and bilobar abscesses (OR 0.60, 95% CI: 0.49, 0.74, p < 0.001). KPPLA has higher overall metastatic complications (KPPLA 9.7% vs. N-KPPLA 4.8%, OR 3.16, 95% CI: 2.00, 4.99, p < 0.001), but lower mortality (KPPLA 3.9% vs. N-KPPLA 7.6%, OR 0.51, 95% CI: 0.34, 0.78, p < 0.001). Trial sequential analysis showed conclusive evidence that KPPLA has lower mortality than N-KPPLA. In conclusion, KPPLA has lower mortality than N-KPPLA.
Collapse
Affiliation(s)
- Kai Siang Chan
- Department of General Surgery, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore 308433, Singapore
- Correspondence: author:
| | - Christopher Tze Wei Chia
- Department of Gastroenterology, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore 308433, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, 11 Mandalay Rd., Singapore 308232, Singapore
| | - Vishal G. Shelat
- Department of General Surgery, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore 308433, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, 11 Mandalay Rd., Singapore 308232, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, 10 Medical Dr., Singapore 117597, Singapore
| |
Collapse
|
10
|
Liu Y, Song R, Zhao L, Lu Z, Li Y, Zhan X, Lu F, Yang J, Niu Y, Cao X. m 6A demethylase ALKBH5 is required for antibacterial innate defense by intrinsic motivation of neutrophil migration. Signal Transduct Target Ther 2022; 7:194. [PMID: 35764614 PMCID: PMC9240034 DOI: 10.1038/s41392-022-01020-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 05/05/2022] [Accepted: 05/06/2022] [Indexed: 12/29/2022] Open
Abstract
Neutrophil migration into the site of infection is necessary for antibacterial innate defense, whereas impaired neutrophil migration may result in excessive inflammation and even sepsis. The neutrophil migration directed by extracellular signals such as chemokines has been extensively studied, yet the intrinsic mechanism for determining neutrophil ability to migrate needs further investigation. N6-methyladenosine (m6A) RNA modification is important in immunity and inflammation, and our preliminary data indicate downregulation of RNA m6A demethylase alkB homolog 5 (ALKBH5) in neutrophils during bacterial infection. Whether m6A modification and ALKBH5 might intrinsically modulate neutrophil innate response remain unknown. Here we report that ALKBH5 is required for antibacterial innate defense by enhancing intrinsic ability of neutrophil migration. We found that deficiency of ALKBH5 increased mortality of mice with polymicrobial sepsis induced by cecal ligation and puncture (CLP), and Alkbh5-deficient CLP mice exhibited higher bacterial burden and massive proinflammatory cytokine production in the peritoneal cavity and blood because of less neutrophil migration. Alkbh5-deficient neutrophils had lower CXCR2 expression, thus exhibiting impaired migration toward chemokine CXCL2. Mechanistically, ALKBH5-mediated m6A demethylation empowered neutrophils with high migration capability through altering the RNA decay, consequently regulating protein expression of its targets, neutrophil migration-related molecules, including increased expression of neutrophil migration-promoting CXCR2 and NLRP12, but decreased expression of neutrophil migration-suppressive PTGER4, TNC, and WNK1. Our findings reveal a previously unknown role of ALKBH5 in imprinting migration-promoting transcriptome signatures in neutrophils and intrinsically promoting neutrophil migration for antibacterial defense, highlighting the potential application of targeting neutrophil m6A modification in controlling bacterial infections.
Collapse
Affiliation(s)
- Yang Liu
- Department of Immunology, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, 100005, Beijing, China. .,Frontier Research Center for Cell Response, Institute of Immunology, College of Life Sciences, Nankai University, 300071, Tianjin, China.
| | - Renjie Song
- Department of Immunology, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, 100005, Beijing, China
| | - Lu Zhao
- Department of Immunology, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, 100005, Beijing, China
| | - Zhike Lu
- School of Life Sciences, Westlake University, 310024, Hangzhou, China
| | - Yini Li
- School of Life Sciences, Westlake University, 310024, Hangzhou, China
| | - Xinyi Zhan
- Department of Immunology, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, 100005, Beijing, China
| | - Fengjiao Lu
- Department of Immunology, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, 100005, Beijing, China
| | - Jiang Yang
- Department of Immunology, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, 100005, Beijing, China
| | - Yamei Niu
- Department of Pathology, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, 100005, Beijing, China
| | - Xuetao Cao
- Department of Immunology, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, 100005, Beijing, China. .,Frontier Research Center for Cell Response, Institute of Immunology, College of Life Sciences, Nankai University, 300071, Tianjin, China.
| |
Collapse
|
11
|
The Impact of Cytokines on Neutrophils' Phagocytosis and NET Formation during Sepsis-A Review. Int J Mol Sci 2022; 23:ijms23095076. [PMID: 35563475 PMCID: PMC9101385 DOI: 10.3390/ijms23095076] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/29/2022] [Accepted: 04/30/2022] [Indexed: 02/04/2023] Open
Abstract
Sepsis is an overwhelming inflammatory response to infection, resulting in multiple-organ injury. Neutrophils are crucial immune cells involved in innate response to pathogens and their migration and effector functions, such as phagocytosis and neutrophil extracellular trap (NET) formation, are dependent on cytokine presence and their concentration. In the course of sepsis, recruitment and migration of neutrophils to infectious foci gradually becomes impaired, thus leading to loss of a crucial arm of the innate immune response to infection. Our review briefly describes the sepsis course, the importance of neutrophils during sepsis, and explains dependence between cytokines and their activation. Moreover, we, for the first time, summarize the impact of cytokines on phagocytosis and NET formation. We highlight and discuss the importance of cytokines in modulation of both processes and emphasize the direction of further investigations.
Collapse
|
12
|
Pontelli MC, Castro IA, Martins RB, La Serra L, Veras FP, Nascimento DC, Silva CM, Cardoso RS, Rosales R, Gomes R, Lima TM, Souza JP, Vitti BC, Caetité DB, de Lima MHF, Stumpf SD, Thompson CE, Bloyet LM, Kawahisa JTE, Giannini MC, Bonjorno LP, Lopes MIF, Batah SS, Li S, Assad RL, Almeida SCL, Oliveira FR, Benatti MN, Pontes LLF, Santana RC, Vilar FC, Martins MA, Shi PY, Cunha TM, Calado RT, Alves-Filho JC, Zamboni DS, Fabro A, Louzada-Junior P, Oliveira RDR, Whelan SPJ, Cunha FQ, Arruda E. SARS-CoV-2 productively infects primary human immune system cells in vitro and in COVID-19 patients. J Mol Cell Biol 2022; 14:6572370. [PMID: 35451490 PMCID: PMC9384834 DOI: 10.1093/jmcb/mjac021] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 12/30/2021] [Accepted: 04/19/2022] [Indexed: 12/04/2022] Open
Abstract
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is associated with a hyperinflammatory state and lymphocytopenia, a hallmark that appears as both signature and prognosis of disease severity outcome. Although cytokine storm and a sustained inflammatory state are commonly associated with immune cell depletion, it is still unclear whether direct SARS-CoV-2 infection of immune cells could also play a role in this scenario by harboring viral replication. We found that monocytes, as well as both B and T lymphocytes, were susceptible to SARS-CoV-2 infection in vitro, accumulating double-stranded RNA consistent with viral RNA replication and ultimately leading to expressive T cell apoptosis. In addition, flow cytometry and immunofluorescence analysis revealed that SARS-CoV-2 was frequently detected in monocytes and B lymphocytes from coronavirus disease 2019 (COVID-19) patients. The rates of SARS-CoV-2-infected monocytes in peripheral blood mononuclear cells from COVID-19 patients increased over time from symptom onset, with SARS-CoV-2-positive monocytes, B cells, and CD4+ T lymphocytes also detected in postmortem lung tissue. These results indicated that SARS-CoV-2 infection of blood-circulating leukocytes in COVID-19 patients might have important implications for disease pathogenesis and progression, immune dysfunction, and virus spread within the host.
Collapse
Affiliation(s)
- Marjorie C Pontelli
- Virology Research Center, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Italo A Castro
- Virology Research Center, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Ronaldo B Martins
- Virology Research Center, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Leonardo La Serra
- Virology Research Center, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Flávio P Veras
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Daniele C Nascimento
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Camila M Silva
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Ricardo S Cardoso
- Virology Research Center, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Roberta Rosales
- Department of Cell and Molecular Biology, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Rogério Gomes
- Blood Center of Ribeirao Preto, 14049-900, Ribeirao Preto, São Paulo, Brazil
| | - Thais M Lima
- Virology Research Center, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Juliano P Souza
- Virology Research Center, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Brenda C Vitti
- Virology Research Center, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Diego B Caetité
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Mikhael H F de Lima
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Spencer D Stumpf
- Department of Biochemistry & Molecular Biology, the University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Cassandra E Thompson
- Department of Biochemistry & Molecular Biology, the University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Louis-Marie Bloyet
- Department of Biochemistry & Molecular Biology, the University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Juliana T E Kawahisa
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Marcela C Giannini
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Letícia P Bonjorno
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Maria I F Lopes
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Sabrina S Batah
- Department of Pathology, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Siyuan Li
- Department of Pathology, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Rodrigo L Assad
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Sergio C L Almeida
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Fabiola R Oliveira
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Maíra N Benatti
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Lorena L F Pontes
- Blood Center of Ribeirao Preto, 14049-900, Ribeirao Preto, São Paulo, Brazil
| | - Rodrigo C Santana
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Fernando C Vilar
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Maria A Martins
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Pei-Yong Shi
- Department of Biochemistry & Molecular Biology, the University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Thiago M Cunha
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Rodrigo T Calado
- Blood Center of Ribeirao Preto, 14049-900, Ribeirao Preto, São Paulo, Brazil
| | - José C Alves-Filho
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Dario S Zamboni
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Department of Cell and Molecular Biology, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Alexandre Fabro
- Department of Pathology, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Paulo Louzada-Junior
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Rene D R Oliveira
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Sean P J Whelan
- Department of Molecular Microbiology, Washington University in St. Louis, Saint Louis, MO 63110, USA
| | - Fernando Q Cunha
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Eurico Arruda
- Virology Research Center, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Department of Cell and Molecular Biology, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| |
Collapse
|
13
|
Liu H, Liu S, Song X, Jiang A, Zou Y, Deng Y, Yue C, Li Z, Yang D, Yang C, Sun D, Yang F, Li M, Jiang K, Lu H, Hu W, Zheng Y. Nanoparticle encapsulated CQ/TAM combination harmonizes with MSCs in arresting progression of severity in AP mice through iNOS (IDO) signaling. Mater Today Bio 2022; 14:100226. [PMID: 35308042 PMCID: PMC8924312 DOI: 10.1016/j.mtbio.2022.100226] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 02/24/2022] [Accepted: 02/25/2022] [Indexed: 12/15/2022]
Abstract
Background Sever acute pancreatitis (SAP) is a critical disease with high mortality, and lack of clinically available treatments with specificity and effectiveness. Bone marrow derived mesenchymal stem cells (BMSCs) exhibited moderate effect on AP which needs further improvement. Methods Pancreatic infiltrating lymphocytes were analyzed to demonstrate the intervention of BMSCs on inflammatory cell infiltration of AP. Gene silencing with siRNA and small molecule inhibitor were utilized to determine the key effector molecule of BMSCs on AP. Pharmacological regulation and nanotechnology were introduced to further ameliorate BMSCs action. Results It was revealed that BMSCs prevent the progression of acute pancreatitis (AP) by reducing recruitment of macrophages, neutrophils and CD4+T cells in the lesion site. The pivotal role of chemokine–iNOS–IDO axis for BMSCs to intervene AP was confirmed. Compared with any single drug, Chloroquine/Tamoxifen combination together with IFN-γ pronouncedly up-regulated the transcription of several MSC immune regulators such as COX-2, PD-L1, HO-1 especially iNOS/IDO. As expected, BMSCs and human umbilical cord mesenchymal stem cells (UMSCs) pretreated with CQ/TAM/IFN-γ exerted enhanced intervention in AP and SAP mice. Moreover, pretreatment with CQ-LPs/TAM-NPs combination not only counteracted MSCs proliferation inhibition induced by free drugs but also enhanced their efficacy. Conclusion Under the background of rapid progress in MSCs clinical translation, this study focuses on the urgent clinical issue and initiates an original mechanism-based strategy to promote intervention on severity progression of SAP, which promises its clinical translation in future.
Collapse
Affiliation(s)
- Huimin Liu
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 6110041, China
| | - Simeng Liu
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 6110041, China
| | - Xiaoshuang Song
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 6110041, China
| | - Ailing Jiang
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 6110041, China
| | - Yu Zou
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 6110041, China
| | - Yuchuan Deng
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 6110041, China
| | - Chao Yue
- Department of Hepatobiliary and Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Zhenlu Li
- Department of Hepatobiliary and Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Dujiang Yang
- Department of Hepatobiliary and Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Chengli Yang
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 6110041, China
| | - Dan Sun
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 6110041, China
| | - Fan Yang
- Department of Gynecology and Obstetrics, Development and Related Diseases of Women and Children Key Laboratory of Sichuan Province, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second Hospital, Sichuan University, Chengdu, Sichuan, 610041, PR China
| | - Mao Li
- Department of Hepatobiliary and Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Kun Jiang
- Department of Integrated Traditional Chinese and Western Medicine, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Huimin Lu
- Department of Hepatobiliary and Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Weiming Hu
- Department of Hepatobiliary and Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Yu Zheng
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 6110041, China
- Corresponding author.
| |
Collapse
|
14
|
Doganyigit Z, Eroglu E, Akyuz E. Inflammatory mediators of cytokines and chemokines in sepsis: From bench to bedside. Hum Exp Toxicol 2022; 41:9603271221078871. [PMID: 35337213 DOI: 10.1177/09603271221078871] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Background: Sepsis is a serious clinical condition characterized by damage to the immune system as a result of an uncontrolled response to infection. Septic patients show complications such as fever, cardiovascular shock, and/or systemic organ failure. Acute organ failure formed in sepsis mostly affects the respiratory and cardiovascular systems. In sepsis, responses including pro-inflammatory and anti-inflammatory processes in addition to the Toll-Like Receptor 4 (TLR4) signals leading to the release of inflammatory mediators have been suggested to be fundamental pathways in the pathophysiology of sepsis. Purpose: In this context, unregulated levels of sepsis-associated inflammatory mediators may increase the risk of mortality. In sepsis, infection-induced pathogens lead to a systemic inflammatory response. These systemic responses may contribute to septic shock and organ dysfunction. In the unfavorable clinical course of sepsis, an uncontrolled inflammatory response is observed. Accordingly, the mechanism of inflammatory mediators such as cytokines and chemokines in sepsis might increase. Neurotransmitters and gene regulators affect inflammatory mediators and control the inflammatory response. In this review, we aimed to show the new therapeutic targets in sepsis treatment with current studies. New clinical implications targeting inflammatory mediators in high mortality affected by the uncontrolled inflammatory response in sepsis can contribute to the understanding of the symptoms.
Collapse
Affiliation(s)
- Zuleyha Doganyigit
- Faculty of Medicine, Histology and Embryology, 162338Yozgat Bozok University, Yozgat, Turkey
| | - Ece Eroglu
- Faculty of Medicine, 162338Yozgat Bozok University Yozgat, Turkey
| | - Enes Akyuz
- Faculty of International Medicine, Department of Biophysics, 448249University of Health Sciences Istanbul, Turkey
| |
Collapse
|
15
|
Peng X, Luo Z, He S, Zhang L, Li Y. Blood-Brain Barrier Disruption by Lipopolysaccharide and Sepsis-Associated Encephalopathy. Front Cell Infect Microbiol 2021; 11:768108. [PMID: 34804998 PMCID: PMC8599158 DOI: 10.3389/fcimb.2021.768108] [Citation(s) in RCA: 83] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 10/14/2021] [Indexed: 12/29/2022] Open
Abstract
As a complex multicellular structure of the vascular system at the central nervous system (CNS), the blood-brain barrier (BBB) separates the CNS from the system circulation and regulates the influx and efflux of substances to maintain the steady-state environment of the CNS. Lipopolysaccharide (LPS), the cell wall component of Gram-negative bacteria, can damage the barrier function of BBB and further promote the occurrence and development of sepsis-associated encephalopathy (SAE). Here, we conduct a literature review of the direct and indirect damage mechanisms of LPS to BBB and the relationship between these processes and SAE. We believe that after LPS destroys BBB, a large number of inflammatory factors and neurotoxins will enter and damage the brain tissue, which will activate brain immune cells to mediate inflammatory response and in turn further destroys BBB. This vicious circle will ultimately lead to the progression of SAE. Finally, we present a succinct overview of the treatment of SAE by restoring the BBB barrier function and summarize novel opportunities in controlling the progression of SAE by targeting the BBB.
Collapse
Affiliation(s)
- Xiaoyao Peng
- Department of Clinical Medicine, School of Clinical Medicine, Southwest Medical University, Luzhou, China
| | - Zhixuan Luo
- Department of Clinical Medicine, School of Clinical Medicine, Southwest Medical University, Luzhou, China
| | - Shuang He
- Department of Clinical Medicine, School of Clinical Medicine, Southwest Medical University, Luzhou, China
| | - Luhua Zhang
- Department of Pathogenic Biology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, China
| | - Ying Li
- Department of Immunology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, China
| |
Collapse
|
16
|
Thornton JM, Yin K. Role of Specialized Pro-Resolving Mediators in Modifying Host Defense and Decreasing Bacterial Virulence. Molecules 2021; 26:molecules26226970. [PMID: 34834062 PMCID: PMC8618792 DOI: 10.3390/molecules26226970] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/05/2021] [Accepted: 11/15/2021] [Indexed: 12/12/2022] Open
Abstract
Bacterial infection activates the innate immune system as part of the host’s defense against invading pathogens. Host response to bacterial pathogens includes leukocyte activation, inflammatory mediator release, phagocytosis, and killing of bacteria. An appropriate host response requires resolution. The resolution phase involves attenuation of neutrophil migration, neutrophil apoptosis, macrophage recruitment, increased phagocytosis, efferocytosis of apoptotic neutrophils, and tissue repair. Specialized Pro-resolving Mediators (SPMs) are bioactive fatty acids that were shown to be highly effective in promoting resolution of infectious inflammation and survival in several models of infection. In this review, we provide insight into the role of SPMs in active host defense mechanisms for bacterial clearance including a new mechanism of action in which an SPM acts directly to reduce bacterial virulence.
Collapse
|
17
|
Mukund K, Nayak P, Ashokkumar C, Rao S, Almeda J, Betancourt-Garcia MM, Sindhi R, Subramaniam S. Immune Response in Severe and Non-Severe Coronavirus Disease 2019 (COVID-19) Infection: A Mechanistic Landscape. Front Immunol 2021; 12:738073. [PMID: 34721400 PMCID: PMC8548832 DOI: 10.3389/fimmu.2021.738073] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 09/08/2021] [Indexed: 12/18/2022] Open
Abstract
The mechanisms underlying the immune remodeling and severity response in coronavirus disease 2019 (COVID-19) are yet to be fully elucidated. Our comprehensive integrative analyses of single-cell RNA sequencing (scRNAseq) data from four published studies, in patients with mild/moderate and severe infections, indicate a robust expansion and mobilization of the innate immune response and highlight mechanisms by which low-density neutrophils and megakaryocytes play a crucial role in the cross talk between lymphoid and myeloid lineages. We also document a marked reduction of several lymphoid cell types, particularly natural killer cells, mucosal-associated invariant T (MAIT) cells, and gamma-delta T (γδT) cells, and a robust expansion and extensive heterogeneity within plasmablasts, especially in severe COVID-19 patients. We confirm the changes in cellular abundances for certain immune cell types within a new patient cohort. While the cellular heterogeneity in COVID-19 extends across cells in both lineages, we consistently observe certain subsets respond more potently to interferon type I (IFN-I) and display increased cellular abundances across the spectrum of severity, as compared with healthy subjects. However, we identify these expanded subsets to have a more muted response to IFN-I within severe disease compared to non-severe disease. Our analyses further highlight an increased aggregation potential of the myeloid subsets, particularly monocytes, in COVID-19. Finally, we provide detailed mechanistic insights into the interaction between lymphoid and myeloid lineages, which contributes to the multisystemic phenotype of COVID-19, distinguishing severe from non-severe responses.
Collapse
Affiliation(s)
- Kavitha Mukund
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, United States
| | - Priya Nayak
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, United States
| | - Chethan Ashokkumar
- Plexision Inc., Pittsburgh, PA, United States
- Hillman Center for Pediatric Transplantation, University of Pittsburgh, Pittsburgh, PA, United States
| | - Sohail Rao
- DHR Health and DHR Health Institute for Research and Development, Edinburg, TX, United States
| | - Jose Almeda
- DHR Health and DHR Health Institute for Research and Development, Edinburg, TX, United States
| | | | - Rakesh Sindhi
- Plexision Inc., Pittsburgh, PA, United States
- Hillman Center for Pediatric Transplantation, University of Pittsburgh, Pittsburgh, PA, United States
| | - Shankar Subramaniam
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, United States
- Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA, United States
- Department of Computer Science and Engineering, University of California, San Diego, La Jolla, CA, United States
| |
Collapse
|
18
|
Ellis JO, Lee BJ, Turner JE. One night of sleep fragmentation does not affect exercise-induced leukocyte trafficking or mitogen-stimulated leukocyte oxidative burst in healthy men. Physiol Behav 2021; 239:113506. [PMID: 34174325 DOI: 10.1016/j.physbeh.2021.113506] [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: 03/11/2021] [Revised: 06/21/2021] [Accepted: 06/22/2021] [Indexed: 11/30/2022]
Abstract
PURPOSE This study examined whether one night of sleep fragmentation alters circulating leukocyte counts and mitogen-stimulated oxidative burst by leukocytes at rest and in response to an acute bout of vigorous exercise. METHODS In a randomised crossover design, nine healthy men (mean ± SD: age 22 ± 2 years; BMI 24.9 ± 1.9 kg/m2) were exposed to one night of fragmented or uninterrupted sleep before cycling for 45 min at 71% ± 4% V̇O2peak. Finger-tip blood samples were collected at rest, immediately post-exercise and one-hour post-exercise. Total leukocytes, lymphocytes, monocytes and neutrophils were counted. Leukocyte oxidative burst was assessed in whole blood by measuring Reactive Oxygen Species (ROS) production with luminol-amplified chemiluminescence after stimulation with phorbol 12-myristate 13-acetate (PMA). RESULTS Exercise elicited the expected trafficking pattern of leukocytes, lymphocytes, monocytes and neutrophils. Compared to rest, PMA-stimulated ROS production was increased one-hour post-exercise (+73% ± 65%; p = 0.019; data combined for fragmented and uninterrupted sleep). There were no statistically significant effects of fragmented sleep on leukocyte, lymphocyte, monocyte, and neutrophil counts or on ROS production at rest, immediately post-exercise or one-hour post-exercise (p > 0.05). However, with fragmented sleep, there was a +10% greater lymphocytosis immediately post-exercise (fragmented +40% ± 37%; uninterrupted +30% ± 35%; p = 0.51) and a -19% smaller neutrophilia by one-hour post-exercise (fragmented +103% ± 88%; uninterrupted +122% ± 131%; p = 0.72). CONCLUSION Fragmented sleep did not substantially alter the magnitude or pattern of exercise-induced leukocyte trafficking or mitogen-stimulated oxidative burst by leukocytes.
Collapse
Affiliation(s)
- James O Ellis
- University of Bath, Department for Health, Claverton Down, Bath, UK
| | - Ben J Lee
- Environmental and Occupational Physiology Group, Coventry University, Priory Street, Coventry, UK
| | - James E Turner
- University of Bath, Department for Health, Claverton Down, Bath, UK.
| |
Collapse
|
19
|
Di Pilato M, Palomino-Segura M, Mejías-Pérez E, Gómez CE, Rubio-Ponce A, D'Antuono R, Pizzagalli DU, Pérez P, Kfuri-Rubens R, Benguría A, Dopazo A, Ballesteros I, Sorzano COS, Hidalgo A, Esteban M, Gonzalez SF. Neutrophil subtypes shape HIV-specific CD8 T-cell responses after vaccinia virus infection. NPJ Vaccines 2021; 6:52. [PMID: 33846352 PMCID: PMC8041892 DOI: 10.1038/s41541-021-00314-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 03/09/2021] [Indexed: 12/20/2022] Open
Abstract
Neutrophils are innate immune cells involved in the elimination of pathogens and can also induce adaptive immune responses. Nα and Nβ neutrophils have been described with distinct in vitro capacity to generate antigen-specific CD8 T-cell responses. However, how these cell types exert their role in vivo and how manipulation of Nβ/Nα ratio influences vaccine-mediated immune responses are not known. In this study, we find that these neutrophil subtypes show distinct migratory and motility patterns and different ability to interact with CD8 T cells in the spleen following vaccinia virus (VACV) infection. Moreover, after analysis of adhesion, inflammatory, and migration markers, we observe that Nβ neutrophils overexpress the α4β1 integrin compared to Nα. Finally, by inhibiting α4β1 integrin, we increase the Nβ/Nα ratio and enhance CD8 T-cell responses to HIV VACV-delivered antigens. These findings provide significant advancements in the comprehension of neutrophil-based control of adaptive immune system and their relevance in vaccine design.
Collapse
Affiliation(s)
- Mauro Di Pilato
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland. .,Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología-CSIC, Madrid, Spain. .,Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Boston, MA, USA. .,Harvard Medical School, Boston, MA, USA. .,Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - Miguel Palomino-Segura
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland.,Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Ernesto Mejías-Pérez
- Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología-CSIC, Madrid, Spain.,Max von Pettenkofer-Institute, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Carmen E Gómez
- Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología-CSIC, Madrid, Spain
| | - Andrea Rubio-Ponce
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain.,Bioinformatics Unit, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Rocco D'Antuono
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland.,Crick Advanced Light Microscopy Science and Technology Platform, The Francis Crick Institute, London, United Kingdom
| | - Diego Ulisse Pizzagalli
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland.,Institute of Computational Science, Università della Svizzera Italiana, Lugano, Switzerland
| | - Patricia Pérez
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland.,Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología-CSIC, Madrid, Spain
| | - Raphael Kfuri-Rubens
- Center of Integrated Protein Science Munich and Division of Clinical Pharmacology, Klinikum der Universität München, Munich, Germany
| | - Alberto Benguría
- Genomics Unit, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Ana Dopazo
- Genomics Unit, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Iván Ballesteros
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Carlos Oscar S Sorzano
- Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología-CSIC, Madrid, Spain
| | - Andrés Hidalgo
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Mariano Esteban
- Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología-CSIC, Madrid, Spain.
| | - Santiago F Gonzalez
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland.
| |
Collapse
|
20
|
Sun K, Li YY, Jin J. A double-edged sword of immuno-microenvironment in cardiac homeostasis and injury repair. Signal Transduct Target Ther 2021; 6:79. [PMID: 33612829 PMCID: PMC7897720 DOI: 10.1038/s41392-020-00455-6] [Citation(s) in RCA: 97] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 10/14/2020] [Accepted: 11/15/2020] [Indexed: 02/07/2023] Open
Abstract
The response of immune cells in cardiac injury is divided into three continuous phases: inflammation, proliferation and maturation. The kinetics of the inflammatory and proliferation phases directly influence the tissue repair. In cardiac homeostasis, cardiac tissue resident macrophages (cTMs) phagocytose bacteria and apoptotic cells. Meanwhile, NK cells prevent the maturation and transport of inflammatory cells. After cardiac injury, cTMs phagocytose the dead cardiomyocytes (CMs), regulate the proliferation and angiogenesis of cardiac progenitor cells. NK cells prevent the cardiac fibrosis, and promote vascularization and angiogenesis. Type 1 macrophages trigger the cardioprotective responses and promote tissue fibrosis in the early stage. Reversely, type 2 macrophages promote cardiac remodeling and angiogenesis in the late stage. Circulating macrophages and neutrophils firstly lead to chronic inflammation by secreting proinflammatory cytokines, and then release anti-inflammatory cytokines and growth factors, which regulate cardiac remodeling. In this process, dendritic cells (DCs) mediate the regulation of monocyte and macrophage recruitment. Recruited eosinophils and Mast cells (MCs) release some mediators which contribute to coronary vasoconstriction, leukocyte recruitment, formation of new blood vessels, scar formation. In adaptive immunity, effector T cells, especially Th17 cells, lead to the pathogenesis of cardiac fibrosis, including the distal fibrosis and scar formation. CMs protectors, Treg cells, inhibit reduce the inflammatory response, then directly trigger the regeneration of local progenitor cell via IL-10. B cells reduce myocardial injury by preserving cardiac function during the resolution of inflammation.
Collapse
Affiliation(s)
- Kang Sun
- MOE Laboratory of Biosystem Homeostasis and Protection, and Life Sciences Institute, Zhejiang University, Hangzhou, 310058, China
| | - Yi-Yuan Li
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China.
| | - Jin Jin
- MOE Laboratory of Biosystem Homeostasis and Protection, and Life Sciences Institute, Zhejiang University, Hangzhou, 310058, China.
- Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China.
| |
Collapse
|
21
|
Souto FO, Castanheira FVS, Trevelin SC, Lima BHF, Cebinelli GCM, Turato WM, Auxiliadora-Martins M, Basile-Filho A, Alves-Filho JC, Cunha FQ. Liver X Receptor Activation Impairs Neutrophil Functions and Aggravates Sepsis. J Infect Dis 2021; 221:1542-1553. [PMID: 31783409 DOI: 10.1093/infdis/jiz635] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 11/27/2019] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Liver X receptors (LXRs) are nuclear receptors activated by oxidized lipids and were previously implicated in several metabolic development and inflammatory disorders. Although neutrophils express both LXR-α and LXR-β, the consequences of their activation, particularly during sepsis, remain unknown. METHODS We used the model of cecal ligation and puncture (CLP) to investigate the role of LXR activation during sepsis. RESULTS In this study, we verified that LXR activation reduces neutrophil chemotactic and killing abilities in vitro. Mice treated with LXR agonists showed higher sepsis-induced mortality, which could be associated with reduced neutrophil infiltration at the infectious foci, increased bacteremia, systemic inflammatory response, and multiorgan failure. In contrast, septic mice treated with LXR antagonist showed increased number of neutrophils in the peritoneal cavity, reduced bacterial load, and multiorgan dysfunction. More important, neutrophils from septic patients showed increased ABCA1 messenger ribonucleic acid levels (a marker of LXR activation) and impaired chemotactic response toward CXCL8 compared with cells from healthy individuals. CONCLUSIONS Therefore, our findings suggest that LXR activation impairs neutrophil functions, which might contribute to poor sepsis outcome.
Collapse
Affiliation(s)
- Fabrício O Souto
- Department of Biochemistry and Immunology, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Laboratory of Immunopathology Keizo Asami, Federal University of Pernambuco, Recife, Brazil
| | - Fernanda V S Castanheira
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center of Research of Inflammatory Diseases, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Silvia C Trevelin
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,King's College London, British Heart Foundation Centre, School of Cardiovascular Medicine and Sciences, London, United Kingdom
| | - Braulio H F Lima
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | | | - Walter M Turato
- Department of Biochemistry and Immunology, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Maria Auxiliadora-Martins
- Department of Pharmacology, Surgery and Anatomy, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Anibal Basile-Filho
- Department of Pharmacology, Surgery and Anatomy, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Jose Carlos Alves-Filho
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center of Research of Inflammatory Diseases, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Fernando Q Cunha
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center of Research of Inflammatory Diseases, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| |
Collapse
|
22
|
Inhibition of Aerobic Glycolysis Promotes Neutrophil to Influx to the Infectious Site Via CXCR2 in Sepsis. Shock 2021; 53:114-123. [PMID: 30829852 DOI: 10.1097/shk.0000000000001334] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Recent evidences suggest that metabolic reprogramming plays an important role in the regulation of innate inflammatory response; however, the specific mechanism is unclear. In this study, we found that glycolytic inhibitor 2-deoxyglucose (2-DG) significantly improved the survival rate in cecal ligation and puncture (CLP)-induced septic mice. 2-DG-treated mice developed increased neutrophil migration to the infectious site and more efficient bacterial clearance than untreated mice. 2-DG reversed the down-regulation of chemokine receptor 2 (CXCR2) and the impaired chemotaxis induced by CLP in mice or lipopolysaccharides (LPS) in human neutrophils. Furthermore, 2-DG reversed the down-regulation of CXCR2 in neutrophils by decreasing the expression of G protein-coupled receptor kinase-2 (GRK2), a serin-threonine protein kinase that mediated the internalization of chemokine receptors, which was induced via the inhibition of extracellular regulated protein kinases (ERK) phosphorylation and the promotion of P38 phosphorylation. Finally, SB225002, a CXCR2 antagonist, partially blocked the protective effects of 2-DG in sepsis. Together, we found a novel mechanism for the migration of neutrophils regulated by metabolism and suggested that aerobic glycolysis might be a potential target of intervention in sepsis.
Collapse
|
23
|
Resende CB, Borges I, Gonçalves WA, Carneiro R, Rezende BM, Pinho V, Nobre V, Teixeira MM. Neutrophil activity in sepsis: a systematic review. ACTA ACUST UNITED AC 2020; 53:e7851. [PMID: 33111742 PMCID: PMC7584151 DOI: 10.1590/1414-431x20207851] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 08/04/2020] [Indexed: 12/04/2022]
Abstract
The neutrophil is an important cell in host defense against infections, acting as the first line of microorganism control. However, this cell exhibits dysregulated activity in sepsis and may contribute to the pathogenesis of the disease. This systematic review aimed to highlight the major scientific findings regarding neutrophil activity in sepsis reported in clinical and experimental research published in the last 10 years. The search was conducted in the Virtual Health Library of PAHO-WHO (BVS) and PubMed databases, and articles published between January 2007 and May 2017 in Portuguese, English, and Spanish were eligible. Article selection was carried out independently by two reviewers (CB and IB). A total of 233 articles were found, of which 87 were identified on PubMed and 146 on BVS. Eighty-two articles were duplicates. Of the remaining 151 articles, 19 met the inclusion criteria after title, abstract, and full-text analysis. Overall, research in clinical samples and animal models of sepsis showed reduced capacity of neutrophils to migrate and delayed apoptosis, but there was no consensus on the phagocytic activity of neutrophils in sepsis. Molecules, such as pentraxin 3 (PTX3), have been analyzed as potential diagnostic markers in sepsis but the diversity of soluble molecules detected in blood samples of sepsis patients did not enable further understanding of the correlation of these circulating molecules with neutrophil activity during sepsis. Optimal understanding of the function of neutrophils in sepsis remains a challenge that, if overcome, would eventually allow targeted therapeutic interventions in patients affected by this severe syndrome.
Collapse
Affiliation(s)
- C B Resende
- Hospital das Clínicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil.,Núcleo Interdisciplinar de Investigação em Medicina Intensiva, Belo Horizonte, MG, Brasil
| | - I Borges
- Hospital das Clínicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil.,Núcleo Interdisciplinar de Investigação em Medicina Intensiva, Belo Horizonte, MG, Brasil.,Departamento de Clínica Médica, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brasil
| | - W A Gonçalves
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - R Carneiro
- Hospital das Clínicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil.,Núcleo Interdisciplinar de Investigação em Medicina Intensiva, Belo Horizonte, MG, Brasil
| | - B M Rezende
- Departamento de Enfermagem Básica, Escola de Enfermagem, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brasil
| | - V Pinho
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - V Nobre
- Núcleo Interdisciplinar de Investigação em Medicina Intensiva, Belo Horizonte, MG, Brasil.,Departamento de Clínica Médica, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brasil
| | - M M Teixeira
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| |
Collapse
|
24
|
Cebinelli GCM, de Lima KA, Silva Castanheira FVE, Hiroki CH, Monteiro VVS, de Lima MHF, Nascimento DCB, Alves Filho JC, Cunha TM, Cunha FDQ. CCR2-deficient mice are protected to sepsis by the disruption of the inflammatory monocytes emigration from the bone marrow. J Leukoc Biol 2020; 109:1063-1070. [PMID: 33020963 DOI: 10.1002/jlb.4mr0820-049rr] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 08/28/2020] [Accepted: 09/15/2020] [Indexed: 11/06/2022] Open
Abstract
Sepsis is defined as life-threatening organ dysfunction caused by a dysregulated host response to infection. Inflammatory monocytes are recruited to both the infection site and vital organs during sepsis; however, the mechanisms that orchestrate their migration, as well as the participation of these cells in systemic inflammation and vital organ damage, are still not fully elucidated. In this context, we described that CCR2-deficient mice had diminished migration of inflammatory monocytes from bone marrow to the circulation and subsequently to the site of infection and vital organs during cecal ligation and puncture (CLP)-induced polymicrobial sepsis. The reduction in the migration of inflammatory monocytes to the infection site was accompanied by a significant increase in the number of neutrophils in the same compartment, which seemed to counterbalance the absence of inflammatory monocytes in controlling microbial growth. Indeed, wild-type (WT) and CCR2-deficient mice under CLP presented similar control of infection. However, the CCR2-deficient mice were more resistant to sepsis, which was associated with a decrease in inflammatory mediators and organ damage biomarkers. Furthermore, the systemic adoptive transfer of CCR2-WT or CCR2-deficient inflammatory monocytes into CCR2-deficient mice equally increased the susceptibility to sepsis, demonstrating the deleterious role of these cells in the periphery even when CCR2 is absent. Thus, despite the host-protective role of inflammatory monocytes in controlling infection, our results demonstrated that the mechanism by which CCR2 deficiency shows protection to CLP-induced sepsis is due to a decrease of inflammatory monocytes emigration from bone marrow to the circulation and vital organs, resulting in the reduction of organ damage and systemic cytokine production.
Collapse
Affiliation(s)
- Guilherme Cesar Martelossi Cebinelli
- Center for Research in Inflammatory Diseases (CRID), Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Graduate Program in Basic and Applied Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Kalil Alves de Lima
- Center for Research in Inflammatory Diseases (CRID), Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Fernanda Vargas E Silva Castanheira
- Center for Research in Inflammatory Diseases (CRID), Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Carlos Hiroji Hiroki
- Center for Research in Inflammatory Diseases (CRID), Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Valter Vinícius Silva Monteiro
- Center for Research in Inflammatory Diseases (CRID), Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Graduate Program in Basic and Applied Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Mikhael Haruo Fernandes de Lima
- Center for Research in Inflammatory Diseases (CRID), Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Graduate Program in Basic and Applied Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Daniele Carvalho Bernardo Nascimento
- Center for Research in Inflammatory Diseases (CRID), Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Graduate Program in Basic and Applied Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - José Carlos Alves Filho
- Center for Research in Inflammatory Diseases (CRID), Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Thiago Mattar Cunha
- Center for Research in Inflammatory Diseases (CRID), Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Fernando de Queiroz Cunha
- Center for Research in Inflammatory Diseases (CRID), Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| |
Collapse
|
25
|
Maehara T, Higashitarumi F, Kondo R, Fujimori K. Prostaglandin F 2α receptor antagonist attenuates LPS-induced systemic inflammatory response in mice. FASEB J 2020; 34:15197-15207. [PMID: 32985737 DOI: 10.1096/fj.202001481r] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/27/2020] [Accepted: 09/02/2020] [Indexed: 11/11/2022]
Abstract
Although it is known that prostaglandin (PG) F2α level is elevated in the plasma of patients with sepsis, the roles of PGF2α is still unknown. We aimed to clarify the roles of PGF2α in the regulation of lipopolysaccharide (LPS)-induced systemic inflammation. At 24 hours after LPS administration, neutrophil infiltration in peritoneal cavity, the mRNA expression of pro-inflammatory cytokines such as tumor necrosis factor-α, interleukin (IL)-1β, IL-6, and macrophage inflammatory protein-2, and tissue damages in lung, liver, and kidney were all increased. Inhibition of FP receptors significantly decreased LPS-induced neutrophil infiltration and lowered the mRNA expression of the pro-inflammatory cytokines. At 6 hour after LPS administration, the level of anti-inflammatory cytokine, IL-10 in peritoneal lavage fluid was higher than that in naïve mice. Inhibition of FP receptors in these mice increased IL-10 level further. Stimulation of isolated peritoneal neutrophils by LPS increased the gene expression of IL-10, which was further increased by AL8810 treatment. Administration of an anti-IL-10 antibody antagonized the AL8810-decreased mRNA expression of pro-inflammatory cytokines and tissue damages. These results indicate that inhibition of FP receptors by AL8810 attenuated LPS-induced systemic inflammation in mice via enhanced IL-10 production.
Collapse
Affiliation(s)
- Toko Maehara
- Department of Pathobiochemistry, Osaka University of Pharmaceutical Sciences
| | | | - Risa Kondo
- Department of Pathobiochemistry, Osaka University of Pharmaceutical Sciences
| | - Ko Fujimori
- Department of Pathobiochemistry, Osaka University of Pharmaceutical Sciences
| |
Collapse
|
26
|
Wu F, Chen X, Zhai L, Wang H, Sun M, Song C, Wang T, Qian Z. CXCR2 antagonist attenuates neutrophil transmigration into brain in a murine model of LPS induced neuroinflammation. Biochem Biophys Res Commun 2020; 529:839-845. [PMID: 32616311 DOI: 10.1016/j.bbrc.2020.05.124] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 05/17/2020] [Indexed: 10/24/2022]
Abstract
Sepsis-associated encephalopathy (SAE) is a devastating neurological complication of sepsis with intolerable high motility. SAE is accompanied with brain vascular injury, endothelial hyperpermeability, and neutrophil infiltration into the brain tissue, key inflammatory processes leading to further brain edema and neuronal cell apoptosis. Recent studies from us and others suggest that the chemokine receptor C-X-C Motif Chemokine Receptor 2 (CXCR2) is crucial for neutrophil recruitment during SAE. Here we use CXCR2 antagonist SB225002 to characterize the role of CXCR2 in brain infiltration of neutrophil in a murine model of SAE. Systemic administration of high-dose LPS (10 mg/kg) induced evident neutrophil infiltration into the cerebral cortex in wild-type mice. However, CXCR2 antagonist SB225002 markedly attenuated neutrophil infiltration into brain. The CXCR2 expression on neutrophils in the peripheral circulation was dramatically downregulated in response to this LPS dose, and endothelial CXCR2 was significantly upregulated, suggesting endothelial but not neutrophil CXCR2 plays a more important role in neutrophil infiltration into brain. Strikingly, although these CXCR2 antagonist SB225002 treated mice displayed reduced neutrophil infiltration, no change in neutrophil rolling and adhesion was observed. Furthermore, we confirmed that CXCR2 agonist CXCL1 induced a marked increase in actin stress fiber synthesis and paracellular gap formation in cultured cerebral endothelial cells, which is attenuated by SB225002. Thus, these results demonstrate a selective role for endothelial CXCR2 to regulate cerebral vascular permeability and neutrophil transmigration in high-dose LPS induced neuroinflammation, and also suggest a therapeutic potential of CXCR2 antagonist SB225002 in SAE.
Collapse
Affiliation(s)
- Fengjiao Wu
- Department of Immunology, School of Laboratory Medicine, Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical College, Bengbu, Anhui, 233030, China
| | - Xiaofen Chen
- Department of Immunology, School of Laboratory Medicine, Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical College, Bengbu, Anhui, 233030, China
| | - Liqian Zhai
- Department of Histology and Embryology, Bengbu Medical College, Bengbu, Anhui, 233030, China
| | - Hongtao Wang
- Department of Immunology, School of Laboratory Medicine, Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical College, Bengbu, Anhui, 233030, China
| | - Meiqun Sun
- Department of Histology and Embryology, Bengbu Medical College, Bengbu, Anhui, 233030, China
| | - Chuanwang Song
- Department of Immunology, School of Laboratory Medicine, Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical College, Bengbu, Anhui, 233030, China
| | - Ting Wang
- Department of Internal Medicine, University of Arizona, Phoenix, AZ, 85004, USA.
| | - Zhongqing Qian
- Department of Immunology, School of Laboratory Medicine, Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical College, Bengbu, Anhui, 233030, China.
| |
Collapse
|
27
|
Abstract
Neutrophils and inflammatory monocytes control sepsis by migration to the site of infection via their chemokine receptors. CCR5 is a chemokine receptor that is not expressed on neutrophils and inflammatory monocytes under homeostatic conditions. However, it has been demonstrated that CCR5 can become expressed on these cells during different models of inflammation. In the present study, we investigated if CCR5 is also expressed on neutrophil and inflammatory monocytes during sepsis, exerting an important role in the migration of these cells to the infectious focus. Using cecal ligation and puncture model to induce polymicrobial sepsis, we demonstrated that the expression of CCR5 is induced on CD11bLy6GLy6C inflammatory monocytes, but not on neutrophils (CD11bLy6GLy6C). Furthermore, CCR5 plays an important role for the migration of the inflammatory monocytes to infection focus during sepsis. CCR5-expressing inflammatory monocytes migrate from the bone marrow to the circulation and then into the site of infection, where they phagocytize and kill the bacteria. Consequently, CCR5 mice showed increased systemic inflammatory response and mortality compared to wild-type mice. These data therefore demonstrate a hitherto unrecognized protective role of CCR5 in sepsis.
Collapse
|
28
|
Pontelli MC, Castro IA, Martins RB, Veras FP, Serra LL, Nascimento DC, Cardoso RS, Rosales R, Lima TM, Souza JP, Caetité DB, de Lima MHF, Kawahisa JT, Giannini MC, Bonjorno LP, Lopes MIF, Batah SS, Siyuan L, Assad RL, Almeida SCL, Oliveira FR, Benatti MN, Pontes LLF, Santana RC, Vilar FC, Martins MA, Cunha TM, Calado RT, Alves-Filho JC, Zamboni DS, Fabro A, Louzada-Junior P, Oliveira RDR, Cunha FQ, Arruda E. Infection of human lymphomononuclear cells by SARS-CoV-2. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2020. [PMID: 34013264 PMCID: PMC8132220 DOI: 10.1101/2020.07.28.225912] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Although SARS-CoV-2 severe infection is associated with a hyperinflammatory state, lymphopenia is an immunological hallmark, and correlates with poor prognosis in COVID-19. However, it remains unknown if circulating human lymphocytes and monocytes are susceptible to SARS-CoV-2 infection. In this study, SARS-CoV-2 infection of human peripheral blood mononuclear cells (PBMCs) was investigated both in vitro and in vivo . We found that in vitro infection of whole PBMCs from healthy donors was productive of virus progeny. Results revealed that monocytes, as well as B and T lymphocytes, are susceptible to SARS-CoV-2 active infection and viral replication was indicated by detection of double-stranded RNA. Moreover, flow cytometry and immunofluorescence analysis revealed that SARS-CoV-2 was frequently detected in monocytes and B lymphocytes from COVID-19 patients, and less frequently in CD4 + T lymphocytes. The rates of SARS-CoV-2-infected monocytes in PBMCs from COVID-19 patients increased over time from symptom onset. Additionally, SARS-CoV-2-positive monocytes and B and CD4+T lymphocytes were detected by immunohistochemistry in post mortem lung tissue. SARS-CoV-2 infection of blood circulating leukocytes in COVID-19 patients may have important implications for disease pathogenesis, immune dysfunction, and virus spread within the host.
Collapse
|
29
|
Malacco NLSDO, Souza JAM, Martins FRB, Rachid MA, Simplicio JA, Tirapelli CR, Sabino ADP, Queiroz-Junior CM, Goes GR, Vieira LQ, Souza DG, Pinho V, Teixeira MM, Soriani FM. Chronic ethanol consumption compromises neutrophil function in acute pulmonary Aspergillus fumigatus infection. eLife 2020; 9:58855. [PMID: 32701055 PMCID: PMC7398701 DOI: 10.7554/elife.58855] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 07/22/2020] [Indexed: 12/16/2022] Open
Abstract
Chronic ethanol consumption is a leading cause of mortality worldwide, with higher risks to develop pulmonary infections, including Aspergillus infections. Mechanisms underlying increased susceptibility to infections are poorly understood. Chronic ethanol consumption induced increased mortality rates, higher Aspergillus fumigatus burden and reduced neutrophil recruitment into the airways. Intravital microscopy showed decrease in leukocyte adhesion and rolling after ethanol consumption. Moreover, downregulated neutrophil activation and increased levels of serum CXCL1 in ethanol-fed mice induced internalization of CXCR2 receptor in circulating neutrophils. Bone marrow-derived neutrophils from ethanol-fed mice showed lower fungal clearance and defective reactive oxygen species production. Taken together, results showed that ethanol affects activation, recruitment, phagocytosis and killing functions of neutrophils, causing susceptibility to pulmonary A. fumigatus infection. This study establishes a new paradigm in innate immune response in chronic ethanol consumers. Alcoholism is a chronic disease that has many damaging effects on the body. Over long periods, excessive alcohol intake weakens the immune system, putting consumers at increased risk of getting lung infections such as pneumonia. Some forms of pneumonia can be caused by the fungus Aspergillus fumigatus. This microbe does not tend to be a problem for healthy individuals, but it can be fatal for those with impaired immune systems. Here, Malacco et al. wanted to find out why excessive alcohol consumers are more prone to pneumonia. To test this, the researchers used two groups of mice that were either fed plain water or water containing ethanol. After 12 weeks, both groups were infected with Aspergillus fumigatus. The results showed that alcohol-fed mice were more susceptible to the infection caused by strong inflammation of the lungs. Normally, the immune system confronts a lung infection by activating a group of defense cells called neutrophils, which travel through the blood system to the infection site. Once in the right spot, neutrophils get to work by releasing toxins that kill the fungus. Malacco et al. discovered that after chronic alcohol consumption, neutrophils were less reactive to inflammatory signals and less likely to reach the lungs. They were also less effective in dealing with the infection. Neutrophil released fewer toxins and were thus less able to kill the microbial cells. These findings demonstrate for the first time how alcohol can affect immune cells during infection and pave the way for new possibilities to prevent fatal lung infections in excessive alcohol consumers. A next step would be to identify how alcohol acts on other processes in the body and to find a way to modulate or even revert the changes it causes.
Collapse
Affiliation(s)
| | | | | | | | | | - Carlos Renato Tirapelli
- Department of Psychiatric Nursing and Human Sciences, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Adriano de Paula Sabino
- Department of Clinical and Toxicological Analysis, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | | | | - Leda Quercia Vieira
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Danielle Glória Souza
- Department of Microbiology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Vanessa Pinho
- Department of Morphology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Mauro Martins Teixeira
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | |
Collapse
|
30
|
Metzemaekers M, Gouwy M, Proost P. Neutrophil chemoattractant receptors in health and disease: double-edged swords. Cell Mol Immunol 2020; 17:433-450. [PMID: 32238918 PMCID: PMC7192912 DOI: 10.1038/s41423-020-0412-0] [Citation(s) in RCA: 221] [Impact Index Per Article: 55.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 03/05/2020] [Indexed: 02/08/2023] Open
Abstract
Neutrophils are frontline cells of the innate immune system. These effector leukocytes are equipped with intriguing antimicrobial machinery and consequently display high cytotoxic potential. Accurate neutrophil recruitment is essential to combat microbes and to restore homeostasis, for inflammation modulation and resolution, wound healing and tissue repair. After fulfilling the appropriate effector functions, however, dampening neutrophil activation and infiltration is crucial to prevent damage to the host. In humans, chemoattractant molecules can be categorized into four biochemical families, i.e., chemotactic lipids, formyl peptides, complement anaphylatoxins and chemokines. They are critically involved in the tight regulation of neutrophil bone marrow storage and egress and in spatial and temporal neutrophil trafficking between organs. Chemoattractants function by activating dedicated heptahelical G protein-coupled receptors (GPCRs). In addition, emerging evidence suggests an important role for atypical chemoattractant receptors (ACKRs) that do not couple to G proteins in fine-tuning neutrophil migratory and functional responses. The expression levels of chemoattractant receptors are dependent on the level of neutrophil maturation and state of activation, with a pivotal modulatory role for the (inflammatory) environment. Here, we provide an overview of chemoattractant receptors expressed by neutrophils in health and disease. Depending on the (patho)physiological context, specific chemoattractant receptors may be up- or downregulated on distinct neutrophil subsets with beneficial or detrimental consequences, thus opening new windows for the identification of disease biomarkers and potential drug targets.
Collapse
Affiliation(s)
- Mieke Metzemaekers
- Laboratory of Molecular Immunology, Rega Institute, KU Leuven, Herestraat 49 bus 1042, B-3000, Leuven, Belgium
| | - Mieke Gouwy
- Laboratory of Molecular Immunology, Rega Institute, KU Leuven, Herestraat 49 bus 1042, B-3000, Leuven, Belgium
| | - Paul Proost
- Laboratory of Molecular Immunology, Rega Institute, KU Leuven, Herestraat 49 bus 1042, B-3000, Leuven, Belgium.
| |
Collapse
|
31
|
Hiroki CH, Toller-Kawahisa JE, Fumagalli MJ, Colon DF, Figueiredo LTM, Fonseca BALD, Franca RFO, Cunha FQ. Neutrophil Extracellular Traps Effectively Control Acute Chikungunya Virus Infection. Front Immunol 2020; 10:3108. [PMID: 32082301 PMCID: PMC7005923 DOI: 10.3389/fimmu.2019.03108] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 12/19/2019] [Indexed: 11/15/2022] Open
Abstract
The Chikungunya virus (CHIKV) is a re-emerging arbovirus, in which its infection causes a febrile illness also commonly associated with severe joint pain and myalgia. Although the immune response to CHIKV has been studied, a better understanding of the virus-host interaction mechanisms may lead to more effective therapeutic interventions. In this context, neutrophil extracellular traps (NETs) have been described as a key mediator involved in the control of many pathogens, including several bacteria and viruses, but no reports of this important protective mechanism were documented during CHIKV infection. Here we demonstrate that the experimental infection of mouse-isolated neutrophils with CHIKV resulted in NETosis (NETs release) through a mechanism dependent on TLR7 activation and reactive oxygen species generation. In vitro, mouse-isolated neutrophils stimulated with phorbol 12-myristate 13-acetate release NETs that once incubated with CHIKV, resulting in further virus capture and neutralization. In vivo, NETs inhibition by the treatment of the mice with DNase resulted in the enhanced susceptibility of IFNAR−/− mice to CHIKV experimental acute infection. Lastly, by accessing the levels of MPO-DNA complex on the acutely CHIKV-infected patients, we found a correlation between the levels of NETs and the viral load in the blood, suggesting that NETs are also released in natural human infection cases. Altogether our findings characterize NETosis as a contributing natural process to control CHIKV acute infection, presenting an antiviral effect that helps to control systemic virus levels.
Collapse
Affiliation(s)
- Carlos H Hiroki
- Department of Pharmacology, School of Medicine of Ribeirao Preto, University of São Paulo, Ribeirao Preto, Brazil
| | - Juliana E Toller-Kawahisa
- Department of Pharmacology, School of Medicine of Ribeirao Preto, University of São Paulo, Ribeirao Preto, Brazil
| | - Marcilio J Fumagalli
- Department of Biochemistry and Immunology, School of Medicine of Ribeirao Preto, University of São Paulo, Ribeirao Preto, Brazil
| | - David F Colon
- Department of Biochemistry and Immunology, School of Medicine of Ribeirao Preto, University of São Paulo, Ribeirao Preto, Brazil
| | - Luiz T M Figueiredo
- Virology Research Center, School of Medicine of Ribeirao Preto, University of São Paulo, Ribeirao Preto, Brazil
| | - Bendito A L D Fonseca
- Virology Research Center, School of Medicine of Ribeirao Preto, University of São Paulo, Ribeirao Preto, Brazil
| | - Rafael F O Franca
- Department of Virology and Experimental Therapy, Institute Aggeu Magalhaes, Oswaldo Cruz Foundation, Recife, Brazil
| | - Fernando Q Cunha
- Department of Pharmacology, School of Medicine of Ribeirao Preto, University of São Paulo, Ribeirao Preto, Brazil
| |
Collapse
|
32
|
Toll-like Receptor 7 Contributes to Inflammation, Organ Injury, and Mortality in Murine Sepsis. Anesthesiology 2020; 131:105-118. [PMID: 31045897 DOI: 10.1097/aln.0000000000002706] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
WHAT WE ALREADY KNOW ABOUT THIS TOPIC Toll-like receptor 7 responds to elevated single-stranded RNA by increasing cytokine production. Sepsis is characterized by elevated plasma levels of tissue damage (and pathogen)-associated molecular patterns, including RNA. WHAT THIS ARTICLE TELLS US THAT IS NEW Using murine models of bacterial sepsis, knockout of the Toll-like receptor 7 resulted in lower mortality and cytokine levels and less end-organ injury. Therefore, Toll-like receptor 7, which mediates innate immune response, contributes to harm in experimental sepsis. BACKGROUND Sepsis remains a critical illness with high mortality. The authors have recently reported that mouse plasma RNA concentrations are markedly increased during sepsis and closely associated with its severity. Toll-like receptor 7, originally identified as the sensor for single-stranded RNA virus, also mediates host extracellular RNA-induced innate immune responses in vitro and in vivo. Here, the authors hypothesize that innate immune signaling via Toll-like receptor 7 contributes to inflammatory response, organ injury, and mortality during polymicrobial sepsis. METHODS Sepsis was created by (1) cecal ligation and puncture or (2) stool slurry peritoneal injection. Wild-type and Toll-like receptor 7 knockout mice, both in C57BL/6J background, were used. The following endpoints were measured: mortality, acute kidney injury biomarkers, plasma and peritoneal cytokines, blood bacterial loading, peritoneal leukocyte counts, and neutrophil phagocytic function. RESULTS The 11-day overall mortality was 81% in wild-type mice and 48% in Toll-like receptor 7 knockout mice after cecal ligation and puncture (N = 27 per group, P = 0.0031). Compared with wild-type septic mice, Toll-like receptor 7 knockout septic mice also had lower sepsis severity, attenuated plasma cytokine storm (wild-type vs. Toll-like receptor 7 knockout, interleukin-6: 43.2 [24.5, 162.7] vs. 4.4 [3.1, 12.0] ng/ml, P = 0.003) and peritoneal inflammation, alleviated acute kidney injury (wild-type vs. Toll-like receptor 7 knockout, neutrophil gelatinase-associated lipocalin: 307 ± 184 vs.139 ± 41-fold, P = 0.0364; kidney injury molecule-1: 40 [16, 49] vs.13 [4, 223]-fold, P = 0.0704), lower bacterial loading, and enhanced leukocyte peritoneal recruitment and phagocytic activities at 24 h. Moreover, stool slurry from wild-type and Toll-like receptor 7 knockout mice resulted in similar level of sepsis severity, peritoneal cytokines, and leukocyte recruitment in wild-type animals after peritoneal injection. CONCLUSIONS Toll-like receptor 7 plays an important role in the pathogenesis of polymicrobial sepsis by mediating host innate immune responses and contributes to acute kidney injury and mortality.
Collapse
|
33
|
Chen W, Zhao S, Ita M, Li Y, Ji J, Jiang Y, Redmond HP, Wang JH, Liu J. An Early Neutrophil Recruitment into the Infectious Site Is Critical for Bacterial Lipoprotein Tolerance-Afforded Protection against Microbial Sepsis. THE JOURNAL OF IMMUNOLOGY 2019; 204:408-417. [PMID: 31801813 DOI: 10.4049/jimmunol.1801602] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 11/04/2019] [Indexed: 12/12/2022]
Abstract
Bacterial lipoprotein (BLP)-induced tolerance represents an essential regulatory mechanism during bacterial infection and has been shown to protect against microbial sepsis. This protection is generally attributed to BLP-tolerized monocytes/macrophages characterized by hyporesponsiveness in producing inflammatory cytokines and, simultaneously, an augmented antimicrobial activity. However, the contribution of polymorphonuclear neutrophils (PMNs), another major player in innate immunity against bacterial infection, to BLP tolerance-afforded protection against microbial sepsis has not been identified. In this study, we report that induction of BLP tolerance protected mice against cecal ligation and puncture-induced polymicrobial sepsis, with significantly improved survival. Importantly, BLP tolerization via i.p. injection triggered an early PMN recruitment even before bacterial infection and promoted further PMN influx into the infectious site (i.e., the peritoneal cavity upon cecal ligation and puncture-associated septic challenge). Notably, this early PMN influx was mediated by BLP tolerization-induced PMN chemoattractant CXCL2-formed concentration gradient between the circulation and peritoneal cavity. Critically, blockage of PMN influx with the CXCR2 antagonist SB225002 abolished BLP tolerance-afforded protection and rendered BLP-tolerized mice more vulnerable to microbial infection with impaired bacterial clearance and increased overall mortality. Thus, our results highlight that an early recruitment of PMNs in the infectious site, as an important cellular mechanism, contributes to BLP tolerance-afforded protection against microbial sepsis.
Collapse
Affiliation(s)
- Wenting Chen
- Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China.,Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China; and
| | - Shuqi Zhao
- Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Michael Ita
- Department of Academic Surgery, Cork University Hospital, University College Cork, Wilton, Cork, Ireland
| | - Yue Li
- Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Jingjing Ji
- Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Yong Jiang
- Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - H Paul Redmond
- Department of Academic Surgery, Cork University Hospital, University College Cork, Wilton, Cork, Ireland
| | - Jiang Huai Wang
- Department of Academic Surgery, Cork University Hospital, University College Cork, Wilton, Cork, Ireland
| | - Jinghua Liu
- Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China;
| |
Collapse
|
34
|
Shao SL, Cong HY, Wang MY, Liu P. The diagnostic roles of neutrophil in bloodstream infections. Immunobiology 2019; 225:151858. [PMID: 31836303 DOI: 10.1016/j.imbio.2019.10.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 04/15/2019] [Accepted: 10/15/2019] [Indexed: 12/21/2022]
Abstract
Bloodstream infections remain a leading cause of death worldwide, despite advances in critical care and understanding of the pathophysiology and treatment strategies. No specific biomarkers or therapy are available for these conditions. Neutrophils play a critical role in controlling infection and it is suggested that their migration and antimicrobial activity are impaired during sepsis which contribute to the dysregulation of immune responses. Recent studies further demonstrated that interruption or reversal of the impaired migration and antimicrobial function of neutrophils improves the outcome of sepsis in animal models. In this review, we provide an overview of the associated diagnostic biomarkers involved neutrophils in sepsis, and discuss the potential of neutrophils as a target to specifically predict the outcome of sepsis.
Collapse
Affiliation(s)
- Shu-Li Shao
- Department of Central Lab, Weihai Municipal Hospital Affiliated to Dalian Medical University, Weihai, Shandong, 264200, PR China
| | - Hai-Yan Cong
- Department of Central Lab, Weihai Municipal Hospital Affiliated to Dalian Medical University, Weihai, Shandong, 264200, PR China
| | - Ming-Yi Wang
- Department of Central Lab, Weihai Municipal Hospital Affiliated to Dalian Medical University, Weihai, Shandong, 264200, PR China.
| | - Peng Liu
- Department of Central Lab, Weihai Municipal Hospital Affiliated to Dalian Medical University, Weihai, Shandong, 264200, PR China.
| |
Collapse
|
35
|
Ran T, Zhang Y, Diao N, Geng S, Chen K, Lee C, Li L. Enhanced Neutrophil Immune Homeostasis Due to Deletion of PHLPP. Front Immunol 2019; 10:2127. [PMID: 31555304 PMCID: PMC6742689 DOI: 10.3389/fimmu.2019.02127] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 08/23/2019] [Indexed: 11/13/2022] Open
Abstract
Neutrophils are known to adopt dynamic and distinct functional phenotypes involved in the modulation of inflammation and immune homeostasis. However, inter-cellular signaling mechanisms that govern neutrophil polarization dynamics are not well understood. Employing a novel model of PHLPP deficient mice, we examined how neutrophils deficient in PHLPP may uniquely modulate immune defense and the host response during acute colitis. We found that PHLPP-/- mice were protected from dextran sodium sulfate (DSS)-induced septic colitis characterized by minimal body weight-loss, alleviated colon tissue destruction and reduced clinical symptoms. PHLPP-/- neutrophils have enhanced immune homeostasis as compared to WT neutrophils, reflected in enhanced migratory capacity toward chemoattractants, and reduced expression of inflammatory mediators due to elevated phosphorylation of AKT, STAT1, and ERK. Further, adoptive transfer of PHLPP deficient neutrophils to WT mice is sufficient to potently alleviate the severity of DSS-induced colitis. Our data reveal that PHLPP deficient neutrophils can be uniquely reprogrammed to a state conducive to host inflammation resolution. As a consequence, PHLPP-/- neutrophils can effectively transfer immune homeostasis in mice subjected to acute colitis. Our findings hold significant and novel insights into the mechanisms by which neutrophils can be effectively reprogrammed into a homeostatic state conducive for treating acute injuries such as septic colitis.
Collapse
Affiliation(s)
- Taojing Ran
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, United States
| | - Yao Zhang
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, United States
| | - Na Diao
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, United States
| | - Shuo Geng
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, United States
| | - Keqiang Chen
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, United States
| | - Christina Lee
- Translational Biology, Medicine, and Health Graduate Program, Virginia Tech, Blacksburg, VA, United States
| | - Liwu Li
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, United States
| |
Collapse
|
36
|
Spiller F, Oliveira Formiga R, Fernandes da Silva Coimbra J, Alves-Filho JC, Cunha TM, Cunha FQ. Targeting nitric oxide as a key modulator of sepsis, arthritis and pain. Nitric Oxide 2019; 89:32-40. [PMID: 31051258 DOI: 10.1016/j.niox.2019.04.011] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 03/22/2019] [Accepted: 04/29/2019] [Indexed: 12/25/2022]
Abstract
Nitric oxide (NO) is produced by enzymatic activity of neuronal (nNOS), endothelial (eNOS), and inducible nitric oxide synthase (iNOS) and modulates a broad spectrum of physiological and pathophysiological conditions. The iNOS isoform is positively regulated at transcriptional level and produces high levels of NO in response to inflammatory mediators and/or to pattern recognition receptor signaling, such as Toll-like receptors. In this review, we compiled the main contributions of our group for understanding of the role of NO in sepsis and arthritis outcome and the peripheral contributions of NO to inflammatory pain development. Although neutrophil iNOS-derived NO is necessary for bacterial killing, systemic production of high levels of NO impairs neutrophil migration to infections through inhibiting neutrophil adhesion on microcirculation and their locomotion. Moreover, neutrophil-derived NO contributes to multiple organ dysfunction in sepsis. In arthritis, NO is chief for bacterial clearance in staphylococcal-induced arthritis; however, it contributes to articular damage and bone mass degradation. NO produced in inflammatory sites also downmodulates pain. The mechanism involved in analgesic effect and inhibition of neutrophil migration is dependent on the activation of the classical sGC/cGMP/PKG pathway. Despite the increasing number of studies performed after the identification of NO as an endothelium-derived relaxing factor, the underlying mechanisms of NO in inflammatory diseases remain unclear.
Collapse
Affiliation(s)
- Fernando Spiller
- Department of Pharmacology, Federal University of Santa Catarina (UFSC), Florianopolis, Brazil.
| | | | | | | | - Thiago Mattar Cunha
- Department of Pharmacology, Ribeiro Preto Medical School, University of Sao Paulo, Brazil
| | - Fernando Queiroz Cunha
- Department of Pharmacology, Ribeiro Preto Medical School, University of Sao Paulo, Brazil.
| |
Collapse
|
37
|
Colón DF, Wanderley CW, Franchin M, Silva CM, Hiroki CH, Castanheira FVS, Donate PB, Lopes AH, Volpon LC, Kavaguti SK, Borges VF, Speck-Hernandez CA, Ramalho F, Carlotti AP, Carmona F, Alves-Filho JC, Liew FY, Cunha FQ. Neutrophil extracellular traps (NETs) exacerbate severity of infant sepsis. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2019; 23:113. [PMID: 30961634 PMCID: PMC6454713 DOI: 10.1186/s13054-019-2407-8] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 03/25/2019] [Indexed: 12/13/2022]
Abstract
Background Neutrophil extracellular traps (NETs) are innate defense mechanisms that are also implicated in the pathogenesis of organ dysfunction. However, the role of NETs in pediatric sepsis is unknown. Methods Infant (2 weeks old) and adult (6 weeks old) mice were submitted to sepsis by intraperitoneal (i.p.) injection of bacteria suspension or lipopolysaccharide (LPS). Neutrophil infiltration, bacteremia, organ injury, and concentrations of cytokine, NETs, and DNase in the plasma were measured. Production of reactive oxygen and nitrogen species and release of NETs by neutrophils were also evaluated. To investigate the functional role of NETs, mice undergoing sepsis were treated with antibiotic plus rhDNase and the survival, organ injury, and levels of inflammatory markers and NETs were determined. Blood samples from pediatric and adult sepsis patients were collected and the concentrations of NETs measured. Results Infant C57BL/6 mice subjected to sepsis or LPS-induced endotoxemia produced significantly higher levels of NETs than the adult mice. Moreover, compared to that of the adult mice, this outcome was accompanied by increased organ injury and production of inflammatory cytokines. The increased NETs were associated with elevated expression of Padi4 and histone H3 citrullination in the neutrophils. Furthermore, treatment of infant septic mice with rhDNase or a PAD-4 inhibitor markedly attenuated sepsis. Importantly, pediatric septic patients had high levels of NETs, and the severity of pediatric sepsis was positively correlated with the level of NETs. Conclusion This study reveals a hitherto unrecognized mechanism of pediatric sepsis susceptibility and suggests that NETs represents a potential target to improve clinical outcomes of sepsis. Electronic supplementary material The online version of this article (10.1186/s13054-019-2407-8) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- David F Colón
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, 14049-900, SP, Brazil
| | - Carlos W Wanderley
- Department of Physiology and Pharmacology, Federal University of Ceará, Fortaleza, 60020-181, CE, Brazil
| | - Marcelo Franchin
- Department of Pharmacology, University of Campinas, Campinas, 13083-970, SP, Brazil
| | - Camila M Silva
- Department of Physiology and Pharmacology, Federal University of Ceará, Fortaleza, 60020-181, CE, Brazil
| | - Carlos H Hiroki
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, 14049-900, SP, Brazil
| | - Fernanda V S Castanheira
- Department of Pharmacology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, 14049-900, Brazil
| | - Paula B Donate
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, 14049-900, SP, Brazil
| | - Alexandre H Lopes
- Department of Pharmacology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, 14049-900, Brazil
| | - Leila C Volpon
- Pediatrics, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, 14049-900, SP, Brazil
| | - Silvia K Kavaguti
- Pediatrics, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, 14049-900, SP, Brazil
| | - Vanessa F Borges
- Department of Pharmacology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, 14049-900, Brazil
| | - Cesar A Speck-Hernandez
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, 14049-900, SP, Brazil
| | - Fernando Ramalho
- Department of Pathology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, 14049-900, SP, Brazil
| | - Ana P Carlotti
- Pediatrics, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, 14049-900, SP, Brazil
| | - Fabio Carmona
- Pediatrics, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, 14049-900, SP, Brazil
| | - Jose C Alves-Filho
- Department of Pharmacology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, 14049-900, Brazil
| | - Foo Y Liew
- Division of Immunology, Infection and Inflammation, Glasgow Biomedical Research Centre, University of Glasgow, Glasgow, G128QQ, UK. .,School of Biology and Basic Medical Science, Soochow University, Suzhou, 215006, JS, China.
| | - Fernando Q Cunha
- Department of Pharmacology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, 14049-900, Brazil.
| |
Collapse
|
38
|
Umehara T, Mori R, Mace KA, Murase T, Abe Y, Yamamoto T, Ikematsu K. Identification of Specific miRNAs in Neutrophils of Type 2 Diabetic Mice: Overexpression of miRNA-129-2-3p Accelerates Diabetic Wound Healing. Diabetes 2019; 68:617-630. [PMID: 30523028 DOI: 10.2337/db18-0313] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 11/29/2018] [Indexed: 01/14/2023]
Abstract
Neutrophils are involved in the first stage of acute inflammation. After injury, they are mobilized and recruited to the injured tissue. In diabetes, wound healing is delayed and aberrant, leading to excessive recruitment and retention of neutrophils that fail to promote angiogenesis and prolong inflammation. However, the exact pathological mechanisms of diabetic-derived neutrophils in chronic inflammation remain unclear. Here, miRNA profiling of neutrophils from bone marrow in type 2 diabetic mice was performed using a microarray. miRNAs regulate the posttranscriptional expression of target mRNAs and are important in countering inflammation-related diseases. Our study revealed that miRNAs exhibit differential expression in diabetic-derived neutrophils compared with non-diabetic-derived neutrophils, especially miR-129 family members. miR-129-2-3p directly regulated the translation of Casp6 and Ccr2, which are involved in inflammatory responses and apoptosis. Furthermore, miR-129-2-3p overexpression at the wound site of type 2 diabetic mice accelerated wound healing. These results suggest possible involvement of miR-129-2-3p in diabetic-derived neutrophil dysfunction and that retention kinetics of neutrophils and chronic inflammation may be initiated through miR-129-2-3p-regulated genes. This study characterizes changes in global miRNA expression in diabetic-derived neutrophils and systematically identifies critical target genes involved in certain biological processes related to the pathology of diabetic wound healing.
Collapse
Affiliation(s)
- Takahiro Umehara
- Division of Forensic Pathology and Science, Unit of Social Medicine, Course of Medical and Dental Sciences, Graduate School of Biomedical Sciences, Nagasaki University School of Medicine, Nagasaki, Japan
| | - Ryoichi Mori
- Department of Pathology, Nagasaki University School of Medicine and Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kimberly A Mace
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, U.K
| | - Takehiko Murase
- Division of Forensic Pathology and Science, Unit of Social Medicine, Course of Medical and Dental Sciences, Graduate School of Biomedical Sciences, Nagasaki University School of Medicine, Nagasaki, Japan
| | - Yuki Abe
- Division of Forensic Pathology and Science, Unit of Social Medicine, Course of Medical and Dental Sciences, Graduate School of Biomedical Sciences, Nagasaki University School of Medicine, Nagasaki, Japan
| | - Takuma Yamamoto
- Division of Forensic Pathology and Science, Unit of Social Medicine, Course of Medical and Dental Sciences, Graduate School of Biomedical Sciences, Nagasaki University School of Medicine, Nagasaki, Japan
| | - Kazuya Ikematsu
- Division of Forensic Pathology and Science, Unit of Social Medicine, Course of Medical and Dental Sciences, Graduate School of Biomedical Sciences, Nagasaki University School of Medicine, Nagasaki, Japan
| |
Collapse
|
39
|
Qian X, Zhao H, Chen X, Li J. Disruption of transient receptor potential melastatin 2 decreases elastase release and bacterial clearance in neutrophils. Innate Immun 2019; 24:122-130. [PMID: 29495939 PMCID: PMC6830898 DOI: 10.1177/1753425918759181] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Elastase released by neutrophils is critical for eliminating Gram-negative
bacteria. Ca2+ influx plays a key role in elastase release and
bacterial clearance in neutrophils. Transient receptor potential melastatin 2
(TRPM2) is a Ca2+-permeable cation channel highly expressed in
neutrophils. Here, we explore the role and possible mechanism of TRPM2 in
bacterial clearance in TRPM2 knockout (TRPM2-KO) mice neutrophils. After
exposure to Escherichia coli, TRPM2–KO bone marrow
neutrophils (BMNs) had increased bacterial burden and decreased elastase
release. The same was observed for septic TRPM2-KO mice which also had decreased
survival rate. After stimulation with chemotactic peptide N-formyl-methionyl-leucyl-phenylalanine (fMLP), elastase release
was lower in TRPM2-KO BMNs than in wild type (WT) BMNs. Pre-treatment of WT BMNs
with p38 MAPK inhibitor reduced fMLP-induced elastase release. Compared with WT
BMNs, TRPM2-KO BMNs had decreased p38 MAPK phosphorylation after fMLP
stimulation. Removal of extracellular Ca2+ reduced fMLP-induced p38
MAPK phosphorylation and elastase release. The concentration of intracellular
Ca2+ decreased in TRPM2-KO BMNs compared with WT BMNs after fMLP
treatment. Hence, TRPM2 plays an important role in bacterial clearance in
neutrophils, possibly by regulating elastase release. TRPM2-mediated
Ca2+ influx regulates elastase release partially via p38 MAPK
phosphorylation in neutrophils.
Collapse
Affiliation(s)
- XiaoWei Qian
- 1 Department of Anesthesiology, Women's Hospital, School of Medicine, Zhejiang University, China.,2 Department of Anesthesiology, Critical Care and Pain Medicine, The Second Affiliated Hospital and Yuying Children Hospital of Wenzhou Medical University, China
| | - Hang Zhao
- 3 Department of Anesthesiology, Yancheng Third People's Hospital, China
| | - XinZhong Chen
- 1 Department of Anesthesiology, Women's Hospital, School of Medicine, Zhejiang University, China
| | - Jun Li
- 2 Department of Anesthesiology, Critical Care and Pain Medicine, The Second Affiliated Hospital and Yuying Children Hospital of Wenzhou Medical University, China
| |
Collapse
|
40
|
Mesenchymal Stem Cells Ameliorate Hepatic Ischemia/Reperfusion Injury via Inhibition of Neutrophil Recruitment. J Immunol Res 2018; 2018:7283703. [PMID: 30622980 PMCID: PMC6304871 DOI: 10.1155/2018/7283703] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Revised: 09/23/2018] [Accepted: 10/18/2018] [Indexed: 12/13/2022] Open
Abstract
Ischemia/reperfusion injury (IRI) remains a major problem in organ transplantation, which represents the main cause of graft dysfunction posttransplantation. Hepatic IRI is characterized by an excessive inflammatory response within the liver. Mesenchymal stem cells (MSCs) have been shown to be immunomodulatory cells and have the therapeutic action on IRI in several organs. However, the mechanism of regulatory effect of MSCs on IRI remains unclear. In the present study, we examined the impact of MSCs on hepatic inflammatory response such as neutrophil influx and liver damage in a rat model of 70% hepatic IRI. Treatment with MSCs protected rat against hepatic IRI, with significantly decreased serum levels of liver enzymes, attenuated hepatic neutrophil infiltration, reduced expression of apoptosis-associated proteins, and ameliorated liver pathological injury. MSCs also significantly enhanced the intracellular activation of p38 MAPK phosphorylation, which led to decreased expression of CXCR2 on the surface of neutrophils. In addition, MSCs significantly diminished neutrophil chemoattractant CXCL2 production by inhibiting NF-κB p65 phosphorylation in macrophages. These results demonstrate that MSCs significantly ameliorate hepatic IRI predominantly through its inhibitory effect on hepatic neutrophil migration and infiltration.
Collapse
|
41
|
Chen J, Wang B, Lai J, Braunstein Z, He M, Ruan G, Yin Z, Wang J, Cianflone K, Ning Q, Chen C, Wang DW. Trimetazidine Attenuates Cardiac Dysfunction in Endotoxemia and Sepsis by Promoting Neutrophil Migration. Front Immunol 2018; 9:2015. [PMID: 30233596 PMCID: PMC6131494 DOI: 10.3389/fimmu.2018.02015] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 08/15/2018] [Indexed: 12/20/2022] Open
Abstract
Aims: Cardiac dysfunction can be a fatal complication during severe sepsis. The migration of neutrophils is significantly impaired during severe sepsis. We sought to determine the role of trimetazidine (TMZ) in regulation of neutrophil migration to the heart in a mouse model of sepsis and endotoxemia, and to identify the mechanism whereby TMZ confers a survival advantage. Methods and Results: C57/BL6 mice were (1) injected with LPS followed by 24-h TMZ administration, or (2) treated with TMZ (20 mg/kg/day) for 1 week post cecal ligation and puncture (CLP) operation. Echocardiography and Millar system detection showed that TMZ alleviated cardiac dysfunction and histological staining showed the failure of neutrophils migration to heart in both LPS- and CLP-induced mice. Bone marrow transplantation revealed that TMZ-pretreated bone marrow cells improved LPS- and CLP-induced myocardial dysfunction and enhanced neutrophil recruitment in heart. In CXCL2-mediated chemotaxis assays, TMZ increased neutrophils migration via AMPK/Nrf2-dependent up-regulation of CXCR2 and inhibition of GRK2. Furthermore, using luciferase reporter gene and chromatin immunoprecipitation assays, we found that TMZ promoted the binding of the Nrf2 and CXCR2 promoter regions directly. Application of CXCR2 inhibitor completely reversed the protective effects of TMZ in vivo. Co-culture of neutrophils and cardiomyocytes further validated that TMZ decreased LPS-induced cardiomyocyte pyroptosis by targeting neutrophils. Conclusion: Our findings suggested TMZ as a potential therapeutic agent for septic or endotoxemia associated cardiac dysfunction in mice. STUDY HIGHLIGHTS What is the current knowledge on the topic? Migration of neutrophils is significantly impaired during severe sepsis, but the underlying mechanisms remain unknown. What question did this study address? The effects of TMZ on cardiac dysfunction via neutrophils migration. What this study adds to our knowledge TMZ attenuated LPS-induced cardiomyocyte pyroptosis and cardiac dysfunction by promoting neutrophils recruitment to the heart tissues via CXCR2. How this might change clinical pharmacology or translational science Our findings suggested TMZ as a potential therapeutic agent for septic cardiac dysfunction.
Collapse
Affiliation(s)
- Jing Chen
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Bei Wang
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China.,Department of Rheumatology and Immunology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jinsheng Lai
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Zachary Braunstein
- Department of Internal Medicine, The Ohio State University, Columbus, OH, United States
| | - Mengying He
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Guoran Ruan
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Zhongwei Yin
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Jin Wang
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Katherine Cianflone
- Centre de Recherche de l'Institut Universitaire de Cardiologie & Pneumologie de Québec, Université Laval, Québec, QC, Canada
| | - Qin Ning
- Department of Infectious Disease, Institute of Infectious Disease, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chen Chen
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Dao Wen Wang
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| |
Collapse
|
42
|
Hiruma T, Tsuyuzaki H, Uchida K, Trapnell BC, Yamamura Y, Kusakabe Y, Totsu T, Suzuki T, Morita S, Doi K, Noiri E, Nakamura K, Nakajima S, Yahagi N, Morimura N, Chang K, Yamada Y. IFN-β Improves Sepsis-related Alveolar Macrophage Dysfunction and Postseptic Acute Respiratory Distress Syndrome-related Mortality. Am J Respir Cell Mol Biol 2018; 59:45-55. [PMID: 29365277 PMCID: PMC6835072 DOI: 10.1165/rcmb.2017-0261oc] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 01/23/2018] [Indexed: 12/29/2022] Open
Abstract
IFN-β is reported to improve survival in patients with acute respiratory distress syndrome (ARDS), possibly by preventing sepsis-induced immunosuppression, but its therapeutic nature in ARDS pathogenesis is poorly understood. We investigated the therapeutic effects of IFN-β for postseptic ARDS to better understand its pathogenesis in mice. Postseptic ARDS was reproduced in mice by cecal ligation and puncture to induce sepsis, followed 4 days later by intratracheal instillation of Pseudomonas aeruginosa to cause pneumonia with or without subcutaneous administration of IFN-β 1 day earlier. Sepsis induced prolonged increases in alveolar TNF-α and IL-10 concentrations and innate immune reprogramming; specifically, it reduced alveolar macrophage (AM) phagocytosis and KC (CXCL1) secretion. Ex vivo AM exposure to TNF-α or IL-10 duplicated cytokine release impairment. Compared with sepsis or pneumonia alone, pneumonia after sepsis was associated with blunted alveolar KC responses and reduced neutrophil recruitment into alveoli despite increased neutrophil burden in lungs (i.e., "incomplete alveolar neutrophil recruitment"), reduced bacterial clearance, increased lung injury, and markedly increased mortality. Importantly, IFN-β reversed the TNF-α/IL-10-mediated impairment of AM cytokine secretion in vitro, restored alveolar innate immune responsiveness in vivo, improved alveolar neutrophil recruitment and bacterial clearance, and consequently reduced the odds ratio for 7-day mortality by 85% (odds ratio, 0.15; 95% confidence interval, 0.03-0.82; P = 0.045). This mouse model of sequential sepsis → pneumonia infection revealed incomplete alveolar neutrophil recruitment as a novel pathogenic mechanism for postseptic ARDS, and systemic IFN-β improved survival by restoring the impaired function of AMs, mainly by recruiting neutrophils to alveoli.
Collapse
Affiliation(s)
| | | | | | - Bruce C. Trapnell
- Division of Pulmonary Biology, Perinatal Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio; and
| | - Yoshiro Yamamura
- Discovery Research Department, Pharmaceutical Research and Development Division, Maruishi Pharmaceutical Co., Ltd., Osaka, Japan
| | | | | | - Takuji Suzuki
- Division of Pulmonary Biology, Perinatal Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio; and
| | | | | | - Eisei Noiri
- Department of Nephrology and Endocrinology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | | | | | | | | | | | | |
Collapse
|
43
|
Staurengo-Ferrari L, Trevelin SC, Fattori V, Nascimento DC, de Lima KA, Pelayo JS, Figueiredo F, Casagrande R, Fukada SY, Teixeira MM, Cunha TM, Liew FY, Oliveira RD, Louzada-Junior P, Cunha FQ, Alves-Filho JC, Verri WA. Interleukin-33 Receptor (ST2) Deficiency Improves the Outcome of Staphylococcus aureus-Induced Septic Arthritis. Front Immunol 2018; 9:962. [PMID: 29867945 PMCID: PMC5968393 DOI: 10.3389/fimmu.2018.00962] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 04/18/2018] [Indexed: 01/29/2023] Open
Abstract
The ST2 receptor is a member of the Toll/IL-1R superfamily and interleukin-33 (IL-33) is its agonist. Recently, it has been demonstrated that IL-33/ST2 axis plays key roles in inflammation and immune mediated diseases. Here, we investigated the effect of ST2 deficiency in Staphylococcus aureus-induced septic arthritis physiopathology. Synovial fluid samples from septic arthritis and osteoarthritis individuals were assessed regarding IL-33 and soluble (s) ST2 levels. The IL-33 levels in samples from synovial fluid were significantly increased, whereas no sST2 levels were detected in patients with septic arthritis when compared with osteoarthritis individuals. The intra-articular injection of 1 × 107 colony-forming unity/10 μl of S. aureus American Type Culture Collection 6538 in wild-type (WT) mice induced IL-33 and sST2 production with a profile resembling the observation in the synovial fluid of septic arthritis patients. Data using WT, and ST2 deficient (−/−) and interferon-γ (IFN-γ)−/− mice showed that ST2 deficiency shifts the immune balance toward a type 1 immune response that contributes to eliminating the infection due to enhanced microbicide effect via NO production by neutrophils and macrophages. In fact, the treatment of ST2−/− bone marrow-derived macrophage cells with anti-IFN-γ abrogates the beneficial phenotype in the absence of ST2, which confirms that ST2 deficiency leads to IFN-γ expression and boosts the bacterial killing activity of macrophages against S. aureus. In agreement, WT cells achieved similar immune response to ST2 deficiency by IFN-γ treatment. The present results unveil a previously unrecognized beneficial effect of ST2 deficiency in S. aureus-induced septic arthritis.
Collapse
Affiliation(s)
- Larissa Staurengo-Ferrari
- Departamento de Patologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Silvia C Trevelin
- Cardiovascular Division, British Heart Foundation Centre, King's College London, London, United Kingdom.,Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Victor Fattori
- Departamento de Patologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Daniele C Nascimento
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Kalil A de Lima
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Jacinta S Pelayo
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Florêncio Figueiredo
- Laboratory of Pathology, Faculty of Medicine, University of Brasilia, Brasilia, Brazil
| | - Rubia Casagrande
- Department of Pharmaceutical Sciences, Healthy Sciences Centre, Londrina State University, Londrina, Brazil
| | - Sandra Y Fukada
- Department of Physics and Chemistry, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Mauro M Teixeira
- Laboratório de Imunofarmacologia, Departamento de Bioquímica e Imunologia, Instituto de Ciencias Biologicas (ICB), Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Thiago M Cunha
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Foo Y Liew
- Division of Immunology, Infection and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Rene D Oliveira
- Division of Clinical Immunology, School of Medicine of Ribeirao Preto, University of São Paulo, Ribeirao Preto, Brazil
| | - Paulo Louzada-Junior
- Division of Clinical Immunology, School of Medicine of Ribeirao Preto, University of São Paulo, Ribeirao Preto, Brazil
| | - Fernando Q Cunha
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - José C Alves-Filho
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Waldiceu A Verri
- Departamento de Patologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| |
Collapse
|
44
|
Patry C, Stamm D, Betzen C, Tönshoff B, Yard BA, Beck GC, Rafat N. CXCR-4 expression by circulating endothelial progenitor cells and SDF-1 serum levels are elevated in septic patients. JOURNAL OF INFLAMMATION-LONDON 2018; 15:10. [PMID: 29796010 PMCID: PMC5956812 DOI: 10.1186/s12950-018-0186-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 05/07/2018] [Indexed: 12/26/2022]
Abstract
Background Endothelial progenitor cell (EPC) numbers are increased in septic patients and correlate with survival. In this study, we investigated, whether surface expression of chemokine receptors and other receptors important for EPC homing is upregulated by EPC from septic patients and if this is associated with clinical outcome. Methods Peripheral blood mononuclear cells from septic patients (n = 30), ICU control patients (n = 11) and healthy volunteers (n = 15) were isolated by Ficoll density gradient centrifugation. FACS-analysis was used to measure the expression of the CXC motif chemokine receptors (CXCR)-2 and − 4, the receptor for advanced glycation endproducts (RAGE) and the stem cell factor receptor c-Kit. Disease severity was assessed via the Simplified Acute Physiology Score (SAPS) II. The serum concentrations of vascular endothelial growth factor (VEGF), stromal cell-derived factor (SDF)-1α and angiopoietin (Ang)-2 were determined with Enzyme linked Immunosorbent Assays. Results EPC from septic patients expressed significantly more CXCR-4, c-Kit and RAGE compared to controls and were associated with survival-probability. Significantly higher serum concentrations of VEGF, SDF-1α and Ang-2 were found in septic patients. SDF-1α showed a significant association with survival. Conclusions Our data suggest that SDF-1α and CXCR-4 signaling could play a crucial role in EPC homing in the course of sepsis. Electronic supplementary material The online version of this article (10.1186/s12950-018-0186-7) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Christian Patry
- 1Department of Pediatrics I, University Children's Hospital Heidelberg, Im Neuenheimer Feld 430, 69120 Heidelberg, Germany.,2Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, University of Heidelberg, Im Neuenheimer Feld 326, 69120 Heidelberg, Germany
| | - Daniela Stamm
- 3Department of Anaesthesiology and Critical Care Medicine, University Medical Center Mannheim, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
| | - Christian Betzen
- 1Department of Pediatrics I, University Children's Hospital Heidelberg, Im Neuenheimer Feld 430, 69120 Heidelberg, Germany
| | - Burkhard Tönshoff
- 1Department of Pediatrics I, University Children's Hospital Heidelberg, Im Neuenheimer Feld 430, 69120 Heidelberg, Germany
| | - Benito A Yard
- 4Department of Medicine V, University Medical Centre Mannheim, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
| | - Grietje Ch Beck
- Department of Anaesthesiology and Critical Care Medicine, HELIOS Dr. Horst Schmidt Kliniken, Wiesbaden, Ludwig-Erhard-Straße 100, 65199 Wiesbaden, Germany
| | - Neysan Rafat
- 1Department of Pediatrics I, University Children's Hospital Heidelberg, Im Neuenheimer Feld 430, 69120 Heidelberg, Germany.,6Department of Neonatology, University Children's Hospital Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany.,Department of Pharmaceutical Sciences, Bahá'í Institute of Higher Education (BIHE), Teheran, Iran
| |
Collapse
|
45
|
Sisti F, Wang S, Brandt SL, Glosson-Byers N, Mayo LD, Son YM, Sturgeon S, Filgueiras L, Jancar S, Wong H, Dela Cruz CS, Andrews N, Alves-Filho JC, Cunha FQ, Serezani CH. Nuclear PTEN enhances the maturation of a microRNA regulon to limit MyD88-dependent susceptibility to sepsis. Sci Signal 2018; 11:11/528/eaai9085. [PMID: 29717063 DOI: 10.1126/scisignal.aai9085] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Sepsis-induced organ damage is caused by systemic inflammatory response syndrome (SIRS), which results in substantial comorbidities. Therefore, it is of medical importance to identify molecular brakes that can be exploited to dampen inflammation and prevent the development of SIRS. We investigated the role of phosphatase and tensin homolog (PTEN) in suppressing SIRS, increasing microbial clearance, and preventing lung damage. Septic patients and mice with sepsis exhibited increased PTEN expression in leukocytes. Myeloid-specific Pten deletion in an animal model of sepsis increased bacterial loads and cytokine production, which depended on enhanced myeloid differentiation primary response gene 88 (MyD88) abundance and resulted in mortality. PTEN-mediated induction of the microRNAs (miRNAs) miR125b and miR203b reduced the abundance of MyD88. Loss- and gain-of-function assays demonstrated that PTEN induced miRNA production by associating with and facilitating the nuclear localization of Drosha-Dgcr8, part of the miRNA-processing complex. Reconstitution of PTEN-deficient mouse embryonic fibroblasts with a mutant form of PTEN that does not localize to the nucleus resulted in retention of Drosha-Dgcr8 in the cytoplasm and impaired production of mature miRNAs. Thus, we identified a regulatory pathway involving nuclear PTEN-mediated miRNA generation that limits the production of MyD88 and thereby limits sepsis-associated mortality.
Collapse
Affiliation(s)
- Flavia Sisti
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Soujuan Wang
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Stephanie L Brandt
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202, USA.,Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Nicole Glosson-Byers
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Lindsey D Mayo
- Herman B Wells Center for Pediatric Research, Departments of Pediatrics and Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Young Min Son
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Sarah Sturgeon
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Luciano Filgueiras
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202, USA.,Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo 05508-000, Brazil
| | - Sonia Jancar
- Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo 05508-000, Brazil
| | - Hector Wong
- Division of Critical Care Medicine, Cincinnati Children's Hospital Medical Center and Cincinnati Children's Hospital Research Foundation, Cincinnati, OH 45229, USA
| | - Charles S Dela Cruz
- Section of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Nathaniel Andrews
- Section of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Jose Carlos Alves-Filho
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto 14049-900, Brazil
| | - Fernando Q Cunha
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto 14049-900, Brazil
| | - C Henrique Serezani
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202, USA. .,Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| |
Collapse
|
46
|
Abstract
Sepsis is a life-threatening organ dysfunction caused by a deregulated host response to infection. This inappropriate response to micro-organism invasion is characterized by an overwhelmed systemic inflammatory response and cardiovascular collapse that culminate in high mortality and morbidity in critical care units. The occurrence of sepsis in diabetes mellitus (DM) patients has become more frequent, as the prevalence of DM has increased dramatically worldwide. These two important diseases represent a global public health concern and highlight the importance of increasing our knowledge of the key elements of the immune response related to both conditions. In this context, it is well established that the cells taking part in the innate and adaptive immune responses in diabetic patients have compromised function. These altered responses favor micro-organism growth, a process that contributes to sepsis progression. The present review provides an update on the characteristics of the immune system in diabetic and septic subjects. We also explore the beneficial effects of insulin on the immune response in a glycemic control-dependent and independent manner.
Collapse
|
47
|
Cockx M, Gouwy M, Godding V, De Boeck K, Van Damme J, Boon M, Struyf S. Neutrophils from Patients with Primary Ciliary Dyskinesia Display Reduced Chemotaxis to CXCR2 Ligands. Front Immunol 2017; 8:1126. [PMID: 29018439 PMCID: PMC5614927 DOI: 10.3389/fimmu.2017.01126] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 08/28/2017] [Indexed: 12/15/2022] Open
Abstract
Primary ciliary dyskinesia (PCD), cystic fibrosis (CF), and chronic obstructive airway disease are characterized by neutrophilic inflammation in the lungs. In CF and chronic obstructive airway disease, improper functioning of neutrophils has been demonstrated. We hypothesized that the pulmonary damage in PCD might be aggravated by abnormal functioning neutrophils either as a primary consequence of the PCD mutation or secondary to chronic inflammation. We analyzed chemotactic responses and chemoattractant receptor expression profiles of peripheral blood neutrophils from 36 patients with PCD, 21 healthy children and 19 healthy adults. We stimulated peripheral blood monocytes from patients and healthy controls and measured CXCL8 and IL-1β production with ELISA. PCD neutrophils displayed reduced migration toward CXCR2 ligands (CXCL5 and CXCL8) in the shape change, microchamber and microslide chemotaxis assays, whereas leukotriene B4 and complement component 5a chemotactic responses were not significantly different. The reduced response to CXCL8 was observed in all subgroups of patients with PCD (displaying either normal ultrastructure, dynein abnormalities or central pair deficiencies) and correlated with lung function. CXCR2 was downregulated in about 65% of the PCD patients, suggestive for additional mechanisms causing CXCR2 impairment. After treatment with the TLR ligands lipopolysaccharide and peptidoglycan, PCD monocytes produced more CXCL8 and IL-1β compared to controls. Moreover, PCD monocytes also responded stronger to IL-1β stimulation in terms of CXCL8 production. In conclusion, we revealed a potential link between CXCR2 and its ligand CXCL8 and the pathogenesis of PCD.
Collapse
Affiliation(s)
- Maaike Cockx
- Laboratory of Molecular Immunology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, Leuven, Belgium
| | - Mieke Gouwy
- Laboratory of Molecular Immunology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, Leuven, Belgium
| | - Véronique Godding
- Unité de Pneumologie Pédiatrique et Mucoviscidose, Clinique Universitaire Saint-Luc UCL Brussels, Brussels, Belgium
| | - Kris De Boeck
- Pediatric Pulmonology and Cystic Fibrosis Unit, Department of Pediatrics, University Hospitals Leuven, Leuven, Belgium
| | - Jo Van Damme
- Laboratory of Molecular Immunology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, Leuven, Belgium
| | - Mieke Boon
- Pediatric Pulmonology and Cystic Fibrosis Unit, Department of Pediatrics, University Hospitals Leuven, Leuven, Belgium
| | - Sofie Struyf
- Laboratory of Molecular Immunology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, Leuven, Belgium
| |
Collapse
|
48
|
Park SY, Shrestha S, Youn YJ, Kim JK, Kim SY, Kim HJ, Park SH, Ahn WG, Kim S, Lee MG, Jung KS, Park YB, Mo EK, Ko Y, Lee SY, Koh Y, Park MJ, Song DK, Hong CW. Autophagy Primes Neutrophils for Neutrophil Extracellular Trap Formation during Sepsis. Am J Respir Crit Care Med 2017; 196:577-589. [PMID: 28358992 DOI: 10.1164/rccm.201603-0596oc] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
RATIONALE Neutrophils are key effectors in the host's immune response to sepsis. Excessive stimulation or dysregulated neutrophil functions are believed to be responsible for sepsis pathogenesis. However, the mechanisms regulating functional plasticity of neutrophils during sepsis have not been fully determined. OBJECTIVES We investigated the role of autophagy in neutrophil functions during sepsis in patients with community-acquired pneumonia. METHODS Neutrophils were isolated from patients with sepsis and stimulated with phorbol 12-myristate 13-acetate (PMA). The levels of reactive oxygen species generation, neutrophil extracellular trap (NET) formation, and granule release, and the autophagic status were evaluated. The effect of neutrophil autophagy augmentation was further evaluated in a mouse model of sepsis. MEASUREMENTS AND MAIN RESULTS Neutrophils isolated from patients who survived sepsis showed an increase in autophagy induction, and were primed for NET formation in response to subsequent PMA stimulation. In contrast, neutrophils isolated from patients who did not survive sepsis showed dysregulated autophagy and a decreased response to PMA stimulation. The induction of autophagy primed healthy neutrophils for NET formation and vice versa. In a mouse model of sepsis, the augmentation of autophagy improved survival via a NET-dependent mechanism. CONCLUSIONS These results indicate that neutrophil autophagy primes neutrophils for increased NET formation, which is important for proper neutrophil effector functions during sepsis. Our study provides important insights into the role of autophagy in neutrophils during sepsis.
Collapse
Affiliation(s)
- So Young Park
- 1 Department of Pulmonary and Critical Care Medicine, KyungHee University Medical Center, Seoul, Republic of Korea
| | | | | | - Jun-Kyu Kim
- 3 Department of Physiology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | | | - Hyun Jung Kim
- 4 Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Republic of Korea
| | - So-Hee Park
- 5 Department of Pulmonary and Critical Care Medicine, KyungHee University Hospital at Gangdong, Seoul, Republic of Korea
| | | | - Shin Kim
- 6 Department of Immunology, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Myung Goo Lee
- 7 Lung Research Institute of Hallym University, College of Medicine, Hallym University, Chuncheon, Republic of Korea.,8 Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Chuncheon Sacred Heart Hospital, Chuncheon, Republic of Korea
| | - Ki-Suck Jung
- 7 Lung Research Institute of Hallym University, College of Medicine, Hallym University, Chuncheon, Republic of Korea.,9 Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Anyang, Republic of Korea
| | - Yong Bum Park
- 7 Lung Research Institute of Hallym University, College of Medicine, Hallym University, Chuncheon, Republic of Korea.,10 Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Kangdong Sacred Heart Hospital, Seoul, Republic of Korea; and
| | - Eun-Kyung Mo
- 7 Lung Research Institute of Hallym University, College of Medicine, Hallym University, Chuncheon, Republic of Korea.,10 Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Kangdong Sacred Heart Hospital, Seoul, Republic of Korea; and
| | - Yousang Ko
- 7 Lung Research Institute of Hallym University, College of Medicine, Hallym University, Chuncheon, Republic of Korea.,10 Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Kangdong Sacred Heart Hospital, Seoul, Republic of Korea; and
| | - Suh-Young Lee
- 7 Lung Research Institute of Hallym University, College of Medicine, Hallym University, Chuncheon, Republic of Korea.,8 Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Chuncheon Sacred Heart Hospital, Chuncheon, Republic of Korea
| | - Younsuck Koh
- 11 Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Myung Jae Park
- 1 Department of Pulmonary and Critical Care Medicine, KyungHee University Medical Center, Seoul, Republic of Korea
| | | | - Chang-Won Hong
- 3 Department of Physiology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| |
Collapse
|
49
|
Laval J, Singh A, Hartl D. Autophagy Traps Neutrophils into a Protective Alliance during Sepsis. Am J Respir Crit Care Med 2017; 196:537-538. [DOI: 10.1164/rccm.201701-0149ed] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Julie Laval
- Department of PediatricsUniversity of TübingenTübingen, Germany
| | - Anurag Singh
- Department of PediatricsUniversity of TübingenTübingen, Germany
| | - Dominik Hartl
- Department of PediatricsUniversity of TübingenTübingen, Germany
| |
Collapse
|
50
|
Increased expression of Siglec-9 in chronic obstructive pulmonary disease. Sci Rep 2017; 7:10116. [PMID: 28860481 PMCID: PMC5579055 DOI: 10.1038/s41598-017-09120-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 07/14/2017] [Indexed: 12/12/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a common inflammatory lung disease. Sialic acid-binding immunoglobulin-type lectins 9 (Siglec-9) is predominantly expressed on innate immune cells and has been shown to exert regulatory effect on immune cells through glycan recognition. Soluble Siglec-9 (sSiglec-9), the extracellular region of Siglec-9, might fulfill its function partly by competitive inhibiting siglec-9 binding to its ligands; however, the role of Siglec-9 and sSiglec-9 in the pathogenesis COPD remain largely unknown. In this study, we showed that Siglec-9 expression in alveolar and peripheral blood neutrophil were increased in COPD patients by immunofluorescence and flow cytometry, respectively. Plasma levels of sSiglelc-9 were elevated in COPD patients by ELISA. In vitro, Siglec-9 expression and/or sSiglelc-9 levels were up-regulated by cigarette smoke extract (CSE), lipopolysaccharide (LPS), some cytokines, and dexamethasone (DEX). Recombinant sSiglce-9 increased oxidative burst in neutrophil and enhanced neutrophil chemotaxis toward IL-8 independent on CXCR1 and CXCR2 expression, but it did not affect neutrophil apoptosis or secretions of inflammatory cytokines. In conclusion, Siglec-9 was complementarily increased to induce a negative feedback loop to limit neutrophil activation in COPD, sSiglce-9 enhanced neutrophil ROS and chemotaxis toward IL-8 likely via competitively inhibiting ligands binding to Siglec-9.
Collapse
|