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Dong Y, Kang Z, Zhang Z, Zhang Y, Zhou H, Liu Y, Shuai X, Li J, Yin L, Wang X, Ma Y, Fan H, Jiang F, Lin Z, Ding C, Yun Jin K, Sarapultsev A, Li F, Zhang G, Xie T, Yin C, Cheng X, Luo S, Liu Y, Hu D. Single-cell profile reveals the landscape of cardiac immunity and identifies a cardio-protective Ym-1 hi neutrophil in myocardial ischemia-reperfusion injury. Sci Bull (Beijing) 2024; 69:949-967. [PMID: 38395651 DOI: 10.1016/j.scib.2024.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 12/11/2023] [Accepted: 01/19/2024] [Indexed: 02/25/2024]
Abstract
Myocardial ischemia-reperfusion injury (MIRI) is a major hindrance to the success of cardiac reperfusion therapy. Although increased neutrophil infiltration is a hallmark of MIRI, the subtypes and alterations of neutrophils in this process remain unclear. Here, we performed single-cell sequencing of cardiac CD45+ cells isolated from the murine myocardium subjected to MIRI at six-time points. We identified diverse types of infiltrating immune cells and their dynamic changes during MIRI. Cardiac neutrophils showed the most immediate response and largest changes and featured with functionally heterogeneous subpopulations, including Ccl3hi Neu and Ym-1hi Neu, which were increased at 6 h and 1 d after reperfusion, respectively. Ym-1hi Neu selectively expressed genes with protective effects and was, therefore, identified as a novel specific type of cardiac cell in the injured heart. Further analysis indicated that neutrophils and their subtypes orchestrated subsequent immune responses in the cardiac tissues, especially instructing the response of macrophages. The abundance of Ym-1hi Neu was closely correlated with the therapeutic efficacy of MIRI when neutrophils were specifically targeted by anti-Lymphocyte antigen 6 complex locus G6D (Ly6G) or anti-Intercellular cell adhesion molecule-1 (ICAM-1) neutralizing antibodies. In addition, a neutrophil subtype with the same phenotype as Ym-1hi Neu was detected in clinical samples and correlated with prognosis. Ym-1 inhibition exacerbated myocardial injury, whereas Ym-1 supplementation significantly ameliorated injury in MIRI mice, which was attributed to the tilt of Ym-1 on the polarization of macrophages toward the repair phenotype in myocardial tissue. Overall, our findings reveal the anti-inflammatory phenotype of Ym-1hi Neu and highlight its critical role in myocardial protection during the early stages of MIRI.
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Affiliation(s)
- Yalan Dong
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Zhenyu Kang
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Zili Zhang
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yongqiang Zhang
- Nanjing Drum Tower Hospital, Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210008, China
| | - Haifeng Zhou
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yanfei Liu
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, Chinese Academy of Chinese Medical Sciences, Beijing 100091, China
| | - Xinxin Shuai
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Junyi Li
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Liangqingqing Yin
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xunxun Wang
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yan Ma
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Heng Fan
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Feng Jiang
- Department of International Education, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
| | - Zhihao Lin
- Institute of Neuroscience, School of Medicine, Xiamen University, Xiamen 361102, China
| | - Congzhu Ding
- Nanjing Drum Tower Hospital, Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210008, China
| | - Kim Yun Jin
- School of Traditional Chinese Medicine, Xiamen University Malaysia, Sepang 43900, Malaysia
| | - Alexey Sarapultsev
- School of Medical Biology, South Ural State University, Chelyabinsk 620049, Russia
| | - Fangfei Li
- Shum Yiu Foon Sum Bik Chuen Memorial Centre for Cancer and Inflammation Research (CCIR), School of Chinese Medicine, Hong Kong Baptist University, Hong Kong 999077, China
| | - Ge Zhang
- Institute of Integrated Bioinfomedicine and Translational Science, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong 999077, China
| | - Tian Xie
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Changjun Yin
- Division of Vascular Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China; Institute of Precision Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China; Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilians-University, Munich 80336, Germany
| | - Xiang Cheng
- Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Shanshan Luo
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - Yue Liu
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, Chinese Academy of Chinese Medical Sciences, Beijing 100091, China.
| | - Desheng Hu
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; China-Russia Medical Research Center for Stress Immunology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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Chen Y, Guo DZ, Zhu CL, Ren SC, Sun CY, Wang Y, Wang JF. The implication of targeting PD-1:PD-L1 pathway in treating sepsis through immunostimulatory and anti-inflammatory pathways. Front Immunol 2023; 14:1323797. [PMID: 38193090 PMCID: PMC10773890 DOI: 10.3389/fimmu.2023.1323797] [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: 10/19/2023] [Accepted: 11/29/2023] [Indexed: 01/10/2024] Open
Abstract
Sepsis currently remains a major contributor to mortality in the intensive care unit (ICU), with 48.9 million cases reported globally and a mortality rate of 22.5% in 2017, accounting for almost 20% of all-cause mortality worldwide. This highlights the urgent need to improve the understanding and treatment of this condition. Sepsis is now recognized as a dysregulation of the host immune response to infection, characterized by an excessive inflammatory response and immune paralysis. This dysregulation leads to secondary infections, multiple organ dysfunction syndrome (MODS), and ultimately death. PD-L1, a co-inhibitory molecule expressed in immune cells, has emerged as a critical factor in sepsis. Numerous studies have found a significant association between the expression of PD-1/PD-L1 and sepsis, with a particular focus on PD-L1 expressed on neutrophils recently. This review explores the role of PD-1/PD-L1 in immunostimulatory and anti-inflammatory pathways, illustrates the intricate link between PD-1/PD-L1 and sepsis, and summarizes current therapeutic approaches against PD-1/PD-L1 in the treatment and prognosis of sepsis in preclinical and clinical studies.
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Affiliation(s)
- Yu Chen
- School of Basic Medicine, Naval Medical University, Shanghai, China
| | - De-zhi Guo
- School of Basic Medicine, Naval Medical University, Shanghai, China
| | - Cheng-long Zhu
- Faculty of Anesthesiology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Shi-chun Ren
- Faculty of Anesthesiology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Chen-yan Sun
- Faculty of Anesthesiology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Yi Wang
- Faculty of Anesthesiology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Jia-feng Wang
- Faculty of Anesthesiology, Changhai Hospital, Naval Medical University, Shanghai, China
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3
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Zaini A, Jawad HE, Hadi NR. Targeting VEGF using Bevacizumab attenuates sepsis-induced liver injury in a mouse model of cecal ligation and puncture. J Med Life 2023; 16:1488-1498. [PMID: 38313162 PMCID: PMC10835558 DOI: 10.25122/jml-2023-0064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 04/14/2023] [Indexed: 02/06/2024] Open
Abstract
Sepsis, a life-threatening condition resulting from an uncontrolled host response to infection, often leads to severe liver damage and remains a significant cause of mortality in critically ill patients despite advances in antibiotic therapy and resuscitation. Bevacizumab, a neutralizing antibody targeting vascular endothelial growth factor (VEGF), is approved for treating certain cancers. However, its potential impact on sepsis-related liver injury is not well understood. This study aimed to explore the potential hepatoprotective effect of Bevacizumab on sepsis-induced liver injury. Twenty-four mice were divided into four groups: a sham group subjected to a midline incision only, a cecal ligation and puncture induction (CLP) group, a vehicle-treated group that received a vehicle one hour before CLP induction, and a Bevacizumab-treated group that received Bevacizumab one hour before CLP induction. Blood samples were collected, and angiopoietin-2 (ANGPT2), alanine transaminase (ALT), and aspartate transaminase (AST) serum levels were measured. Liver tissue homogenates were analyzed for IL-6, TNFα, intracellular adhesion molecule (ICAM-1), macrophage inhibitory factor (MIF), vascular endothelial growth factor (VEGF), F2-isoprostane, and caspase-11 levels. A histological examination was performed to assess the extent of liver damage. Mice exposed to CLP had high levels of the biomarkers mentioned above with a high degree of liver injury compared to the sham group. In contrast, treatment with Bevacizumab notably reduced these markers and mitigated liver damage. In conclusion, Bevacizumab may be a protective agent against sepsis-induced liver injury.
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Affiliation(s)
- Aula Zaini
- Department of Pharmacology and Therapeutics, Faculty of Medicine, University of Kufa, Najaf, Iraq
| | | | - Najah Rayish Hadi
- Department of Pharmacology and Therapeutics, Faculty of Medicine, University of Kufa, Najaf, Iraq
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4
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Xu Q, Zhao W, Yan M, Mei H. Neutrophil reverse migration. J Inflamm (Lond) 2022; 19:22. [PMID: 36424665 PMCID: PMC9686117 DOI: 10.1186/s12950-022-00320-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 11/15/2022] [Indexed: 11/25/2022] Open
Abstract
The behavior of neutrophils is very important for the resolution of inflammation and tissue repair. People have used advanced imaging techniques to observe the phenomenon of neutrophils leaving the injured or inflammatory site and migrating back into blood vessels in transgenic zebrafish and mice, which is called neutrophil reverse migration. Numerous studies have shown that neutrophil reverse migration is a double-edged sword. On the one hand, neutrophil reverse migration can promote the resolution of local inflammation by accelerating the clearance of neutrophils from local wounds. On the other hand, neutrophils re-enter the circulatory system may lead to the spread of systemic inflammation. Therefore, accurate regulation of neutrophil reverse migration is of great significance for the treatment of various neutrophil- mediated diseases. However, the mechanism of neutrophil reverse migration and its relationship with inflammation resolution is unknown. In this review, we reviewed the relevant knowledge of neutrophil reverse migration to elucidate the potential mechanisms and factors influencing reverse migration and its impact on inflammation in different disease processes.
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Affiliation(s)
- Qichao Xu
- grid.417384.d0000 0004 1764 2632Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, 109 Xueyuan Road, Wenzhou, Zhejiang Province People’s Republic of China 325027 ,grid.417384.d0000 0004 1764 2632Key Laboratory of Anesthesiology of Zhejiang Province, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Zhejiang, China
| | - Wenqi Zhao
- grid.417384.d0000 0004 1764 2632Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, 109 Xueyuan Road, Wenzhou, Zhejiang Province People’s Republic of China 325027 ,grid.417384.d0000 0004 1764 2632Key Laboratory of Anesthesiology of Zhejiang Province, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Zhejiang, China
| | - Mingyang Yan
- grid.417384.d0000 0004 1764 2632Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, 109 Xueyuan Road, Wenzhou, Zhejiang Province People’s Republic of China 325027 ,grid.417384.d0000 0004 1764 2632Key Laboratory of Anesthesiology of Zhejiang Province, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Zhejiang, China
| | - Hongxia Mei
- grid.417384.d0000 0004 1764 2632Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, 109 Xueyuan Road, Wenzhou, Zhejiang Province People’s Republic of China 325027 ,grid.417384.d0000 0004 1764 2632Key Laboratory of Anesthesiology of Zhejiang Province, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Zhejiang, China
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5
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Alves GF, Aimaretti E, Einaudi G, Mastrocola R, de Oliveira JG, Collotta D, Porchietto E, Aragno M, Cifani C, Sordi R, Thiemermann C, Fernandes D, Collino M. Pharmacological Inhibition of FAK-Pyk2 Pathway Protects Against Organ Damage and Prolongs the Survival of Septic Mice. Front Immunol 2022; 13:837180. [PMID: 35178052 PMCID: PMC8843946 DOI: 10.3389/fimmu.2022.837180] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 01/14/2022] [Indexed: 12/29/2022] Open
Abstract
Sepsis and septic shock are associated with high mortality and are considered one of the major public health concerns. The onset of sepsis is known as a hyper-inflammatory state that contributes to organ failure and mortality. Recent findings suggest a potential role of two non-receptor protein tyrosine kinases, namely Focal adhesion kinase (FAK) and Proline-rich tyrosine kinase 2 (Pyk2), in the inflammation associated with endometriosis, cancer, atherosclerosis and asthma. Here we investigate the role of FAK-Pyk2 in the pathogenesis of sepsis and the potential beneficial effects of the pharmacological modulation of this pathway by administering the potent reversible dual inhibitor of FAK and Pyk2, PF562271 (PF271) in a murine model of cecal ligation and puncture (CLP)-induced sepsis. Five-month-old male C57BL/6 mice underwent CLP or Sham surgery and one hour after the surgical procedure, mice were randomly assigned to receive PF271 (25 mg/kg, s.c.) or vehicle. Twenty-four hours after surgery, organs and plasma were collected for analyses. In another group of mice, survival rate was assessed every 12 h over the subsequent 5 days. Experimental sepsis led to a systemic cytokine storm resulting in the formation of excessive amounts of both pro-inflammatory cytokines (TNF-α, IL-1β, IL-17 and IL-6) and the anti-inflammatory cytokine IL-10. The systemic inflammatory response was accompanied by high plasma levels of ALT, AST (liver injury), creatinine, (renal dysfunction) and lactate, as well as a high, clinical severity score. All parameters were attenuated following PF271 administration. Experimental sepsis induced an overactivation of FAK and Pyk2 in liver and kidney, which was associated to p38 MAPK activation, leading to increased expression/activation of several pro-inflammatory markers, including the NLRP3 inflammasome complex, the adhesion molecules ICAM-1, VCAM-1 and E-selectin and the enzyme NOS-2 and myeloperoxidase. Treatment with PF271 inhibited FAK-Pyk2 activation, thus blunting the inflammatory abnormalities orchestrated by sepsis. Finally, PF271 significantly prolonged the survival of mice subjected to CLP-sepsis. Taken together, our data show for the first time that the FAK-Pyk2 pathway contributes to sepsis-induced inflammation and organ injury/dysfunction and that the pharmacological modulation of this pathway may represents a new strategy for the treatment of sepsis.
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Affiliation(s)
- Gustavo Ferreira Alves
- Department of Neurosciences (Rita Levi Montalcini), University of Turin, Turin, Italy.,Department of Pharmacology, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Eleonora Aimaretti
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Giacomo Einaudi
- Pharmacology Unit, School of Pharmacy, University of Camerino, Camerino, Italy
| | - Raffaella Mastrocola
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | | | - Debora Collotta
- Department of Neurosciences (Rita Levi Montalcini), University of Turin, Turin, Italy
| | - Elisa Porchietto
- Pharmacology Unit, School of Pharmacy, University of Camerino, Camerino, Italy
| | - Manuela Aragno
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Carlo Cifani
- Pharmacology Unit, School of Pharmacy, University of Camerino, Camerino, Italy
| | - Regina Sordi
- Department of Pharmacology, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Christoph Thiemermann
- William Harvey Research Institute, Bart's and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Daniel Fernandes
- Department of Pharmacology, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Massimo Collino
- Department of Neurosciences (Rita Levi Montalcini), University of Turin, Turin, Italy
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6
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Nelin LD, Jin Y, Chen B, Liu Y, Rogers LK, Reese J. Cyclooxygenase-2 deficiency attenuates lipopolysaccharide-induced inflammation, apoptosis, and acute lung injury in adult mice. Am J Physiol Regul Integr Comp Physiol 2022; 322:R126-R135. [PMID: 34984926 PMCID: PMC9829472 DOI: 10.1152/ajpregu.00140.2021] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 10/20/2021] [Accepted: 12/22/2021] [Indexed: 02/03/2023]
Abstract
Many lung diseases are caused by an excessive inflammatory response, and inflammatory lung diseases are often modeled using lipopolysaccharide (LPS) in mice. Cyclooxygenase-2 (COX-2) encoded by the Ptgs2 gene is induced in response to inflammatory stimuli including LPS. The objective of this study was to test the hypothesis that mice deficient in COX-2 (Ptgs2-/-) will be protected from LPS-induced lung injury. Wild-type (WT; CD1 mice) and Ptgs2-/- mice (on a CD1 background) were treated with LPS or vehicle for 24 h. LPS treatment resulted in histological evidence of lung injury, which was attenuated in the Ptgs2-/- mice. LPS treatment increased the mRNA levels for tumor necrosis factor-α, interleukin-10, and monocyte chemoattractant protein-1 in the lungs of WT mice, and the LPS-induced increases in these levels were attenuated in the Ptgs2-/- mice. The protein levels of active caspase-3 and caspase-9 were lower in the LPS-treated lungs of Ptgs2-/- mice than in LPS-treated WT mice, as were the number of terminal deoxynucleotide transferase dUTP nick end labeling-positive cells in lung sections. LPS exposure resulted in a greater lung wet-to-dry weight ratio (W/D) in WT mice, suggestive of pulmonary edema, while in LPS-treated Ptgs2-/- mice, the W/D was not different from controls and less than in LPS-treated WT mice. These results demonstrate that COX-2 is involved in the inflammatory response to LPS and suggest that COX-2 not only acts as a downstream participant in the inflammatory response, but also acts as a regulator of the inflammatory response likely through a feed-forward mechanism following LPS stimulation.
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Affiliation(s)
- Leif D Nelin
- Pulmonary Hypertension Group, Center for Perinatal Research, Abigail Wexner Research Institute, Nationwide Children's Hospital, Columbus, Ohio
- Department of Pediatrics, The Ohio State University, Columbus, Ohio
| | - Yi Jin
- Pulmonary Hypertension Group, Center for Perinatal Research, Abigail Wexner Research Institute, Nationwide Children's Hospital, Columbus, Ohio
- Department of Pediatrics, The Ohio State University, Columbus, Ohio
| | - Bernadette Chen
- Pulmonary Hypertension Group, Center for Perinatal Research, Abigail Wexner Research Institute, Nationwide Children's Hospital, Columbus, Ohio
- Department of Pediatrics, The Ohio State University, Columbus, Ohio
| | - Yusen Liu
- Pulmonary Hypertension Group, Center for Perinatal Research, Abigail Wexner Research Institute, Nationwide Children's Hospital, Columbus, Ohio
- Department of Pediatrics, The Ohio State University, Columbus, Ohio
| | - Lynette K Rogers
- Pulmonary Hypertension Group, Center for Perinatal Research, Abigail Wexner Research Institute, Nationwide Children's Hospital, Columbus, Ohio
- Department of Pediatrics, The Ohio State University, Columbus, Ohio
| | - Jeff Reese
- Department of Pediatrics, Vanderbilt University, Nashville, Tennessee
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7
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Rahman M, Ding Z, Rönnow CF, Thorlacius H. Transcriptomic Analysis Reveals Differential Expression of Genes between Lung Capillary and Post Capillary Venules in Abdominal Sepsis. Int J Mol Sci 2021; 22:ijms221910181. [PMID: 34638535 PMCID: PMC8507973 DOI: 10.3390/ijms221910181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 09/14/2021] [Accepted: 09/17/2021] [Indexed: 12/29/2022] Open
Abstract
Lung endothelial cell dysfunction plays a central role in septic-induced lung injury. We hypothesized that endothelial cell subsets, capillary endothelial cells (capEC) and post capillary venules (PCV), might play different roles in regulating important pathophysiology in sepsis. In order to reveal global transcriptomic changes in endothelial cell subsets during sepsis, we induced sepsis in C57BL/6 mice by cecal ligation and puncture (CLP). We confirmed that CLP induced systemic and lung inflammation in our model. Endothelial cells (ECs) from lung capillary and PCV were isolated by cell sorting and transcriptomic changes were analyzed by bioinformatic tools. Our analysis revealed that lung capEC are transcriptionally different than PCV. Comparison of top differentially expressed genes (DEGs) of capEC and PCV revealed that capEC responses are different than PCV during sepsis. It was found that capEC are more enriched with genes related to regulation of coagulation, vascular permeability, wound healing and lipid metabolic processes after sepsis. In contrast, PCV are more enriched with genes related to chemotaxis, cell–cell adhesion by integrins, chemokine biosynthesis, regulation of actin filament process and neutrophil homeostasis after sepsis. In addition, we predicted some transcription factor targets that regulate a significant number of DEGs in sepsis. We proposed that targeting certain DEGs or transcriptional factors would be useful in protecting against sepsis-induced lung damage.
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8
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Kronstadt SM, Pottash AE, Levy D, Wang S, Chao W, Jay SM. Therapeutic Potential of Extracellular Vesicles for Sepsis Treatment. ADVANCED THERAPEUTICS 2021; 4:2000259. [PMID: 34423113 PMCID: PMC8378673 DOI: 10.1002/adtp.202000259] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Indexed: 12/14/2022]
Abstract
Sepsis is a deadly condition lacking a specific treatment despite decades of research. This has prompted the exploration of new approaches, with extracellular vesicles (EVs) emerging as a focal area. EVs are nanosized, cell-derived particles that transport bioactive components (i.e., proteins, DNA, and RNA) between cells, enabling both normal physiological functions and disease progression depending on context. In particular, EVs have been identified as critical mediators of sepsis pathophysiology. However, EVs are also thought to constitute the biologically active component of cell-based therapies and have demonstrated anti-inflammatory, anti-apoptotic, and immunomodulatory effects in sepsis models. The dual nature of EVs in sepsis is explored here, discussing their endogenous roles and highlighting their therapeutic properties and potential. Related to the latter component, prior studies involving EVs from mesenchymal stem/stromal cells (MSCs) and other sources are discussed and emerging producer cells that could play important roles in future EV-based sepsis therapies are identified. Further, how methodologies could impact therapeutic development toward sepsis treatment to enhance and control EV potency is described.
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Affiliation(s)
- Stephanie M Kronstadt
- Fischell Department of Bioengineering, University of Maryland, 3102 A. James Clark Hall, College Park, MD 20742, USA
| | - Alex E Pottash
- Fischell Department of Bioengineering, University of Maryland, 3102 A. James Clark Hall, College Park, MD 20742, USA
| | - Daniel Levy
- Fischell Department of Bioengineering, University of Maryland, 3102 A. James Clark Hall, College Park, MD 20742, USA
| | - Sheng Wang
- Translational Research Program, Department of Anesthesiology and Center for Shock Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Wei Chao
- Translational Research Program, Department of Anesthesiology and Center for Shock Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Steven M Jay
- Fischell Department of Bioengineering and Program in Molecular and, Cell Biology, University of Maryland, 3102 A. James Clark Hall, College Park, MD 20742, USA
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9
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Bailey WP, Cui K, Ardell CL, Keever KR, Singh S, Rodriguez-Gil DJ, Ozment TR, Williams DL, Yakubenko VP. Frontline Science: The expression of integrin α D β 2 (CD11d/CD18) on neutrophils orchestrates the defense mechanism against endotoxemia and sepsis. J Leukoc Biol 2021; 109:877-890. [PMID: 33438263 PMCID: PMC8085079 DOI: 10.1002/jlb.3hi0820-529rr] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 12/07/2020] [Accepted: 12/08/2020] [Indexed: 12/14/2022] Open
Abstract
Neutrophil-macrophage interplay is a fine-tuning mechanism that regulates the innate immune response during infection and inflammation. Cell surface receptors play an essential role in neutrophil and macrophage functions. The same receptor can provide different outcomes within diverse leukocyte subsets in different inflammatory conditions. Understanding the variety of responses mediated by one receptor is critical for the development of anti-inflammatory treatments. In this study, we evaluated the role of a leukocyte adhesive receptor, integrin αD β2 , in the development of acute inflammation. αD β2 is mostly expressed on macrophages and contributes to the development of chronic inflammation. In contrast, we found that αD -knockout dramatically increases mortality in the cecal ligation and puncture sepsis model and LPS-induced endotoxemia. This pathologic outcome of αD -deficient mice is associated with a reduced number of monocyte-derived macrophages and an increased number of neutrophils in their lungs. However, the tracking of adoptively transferred fluorescently labeled wild-type (WT) and αD-/- monocytes in WT mice during endotoxemia demonstrated only a moderate difference between the recruitment of these two subsets. Moreover, the rescue experiment, using i.v. injection of WT monocytes to αD -deficient mice followed by LPS challenge, showed only slightly reduced mortality. Surprisingly, the injection of WT neutrophils to the bloodstream of αD-/- mice markedly increased migration of monocyte-derived macrophage to lungs and dramatically improves survival. αD -deficient neutrophils demonstrate increased necrosis/pyroptosis. αD β2 -mediated macrophage accumulation in the lungs promotes efferocytosis that reduced mortality. Hence, integrin αD β2 implements a complex defense mechanism during endotoxemia, which is mediated by macrophages via a neutrophil-dependent pathway.
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Affiliation(s)
- William P Bailey
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA
| | - Kui Cui
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA
| | - Christopher L Ardell
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA
| | - Kasey R Keever
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA
| | - Sanjay Singh
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA
| | - Diego J Rodriguez-Gil
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA
| | - Tammy R Ozment
- Department of Surgery, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA
- Center of Excellence in Inflammation, Infectious Disease and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA
| | - David L Williams
- Department of Surgery, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA
- Center of Excellence in Inflammation, Infectious Disease and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA
| | - Valentin P Yakubenko
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA
- Center of Excellence in Inflammation, Infectious Disease and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA
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10
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Chen R, Zhou L. PD-1 signaling pathway in sepsis: Does it have a future? Clin Immunol 2021; 229:108742. [PMID: 33905818 DOI: 10.1016/j.clim.2021.108742] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 01/07/2021] [Accepted: 04/22/2021] [Indexed: 01/17/2023]
Abstract
Sepsis is characterized by high mortality and poor prognosis and is one of the leading causes of death among patients in the intensive care unit (ICU). In the past, drugs that block early inflammatory responses have done little to reverse the progression of sepsis. Programmed cell death receptor 1 (PD-1) and its two ligands, programmed cell death receptor ligand 1(PD-L1) and programmed cell death receptor ligand 2 (PD-L2), are negative regulatory factors of the immune response of the body. Recently, the role of the PD-1 signaling pathway in sepsis has been widely studied. Studies showed that the PD-1 signaling pathways are closely related to the mortality and prognosis of sepsis patients. In the immunotherapy of sepsis, whether in animal experiments or clinical trials, anti-PD-1/PD-L1 antibodies have shown good promise. In this review, firstly, we focus on the immunosuppressive mechanism of sepsis and the structure and function of the PD-1 signaling pathway. The variety of the PD-1 signaling pathways in sepsis is introduced. Then, the relationship between the PD-1 signaling pathway and immune cells and organ dysfunction and the regulatory factors of the PD-1 signaling pathway in sepsis is discussed. Finally, the application of the PD-1 signaling pathway in sepsis is specifically emphasized.
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Affiliation(s)
- Rongping Chen
- Department of Intensive care unit, The First People's Hospital of Foshan, Foshan 528000, Guangdong Province, China; Sun Yet-sen University, Guangzhou 510000, Guangdong Province, China
| | - Lixin Zhou
- Department of Intensive care unit, The First People's Hospital of Foshan, Foshan 528000, Guangdong Province, China.
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11
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Lou JS, Wang JF, Fei MM, Zhang Y, Wang J, Guo Y, Bian JJ, Deng XM. Targeting Lymphocyte Activation Gene 3 to Reverse T-Lymphocyte Dysfunction and Improve Survival in Murine Polymicrobial Sepsis. J Infect Dis 2021; 222:1051-1061. [PMID: 32347939 DOI: 10.1093/infdis/jiaa191] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Accepted: 04/24/2020] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Lymphocyte activation gene 3 (LAG-3) is one of the immune checkpoint molecules, negatively regulating the T-cell reactions. The present study investigated the role of LAG-3 in sepsis-induced T-lymphocyte disability. METHODS Mice sepsis was induced by cecal ligation and puncture (CLP). LAG-3 expression on some immune cells were detected 24 hours after CLP. LAG-3 knockout and anti-LAG-3 antibody were applied to investigate the effects on the survival, bacterial clearance. Cytokine levels, T-cell counts, and the presence of apoptosis (in blood, spleen, and thymus) were also determined. In vitro T-cell apoptosis, interferon γ secretion, and proliferation were measured. The expression of interleukin 2 receptor on T cells was also determined after CLP. RESULTS LAG-3 was up-regulated on CD4+/CD8+ T, CD19+ B, natural killer, CD4+CD25+ regulatory T cells and dendritic cells. Both LAG-3 knockout and anti-LAG-3 antibody had a positive effect on survival and on blood or peritoneal bacterial clearance in mice undergoing CLP. Cytokine levels and T-cell apoptosis decreased in anti-LAG-3 antibody-treated mice. Induced T-cell apoptosis decreased, whereas interferon γ secretion and proliferation were improved by anti-LAG-3 antibody in vitro. Interleukin 2 receptor was up-regulated on T cells in both wild-type and LAG-3-knockout mice undergoing CLP. CONCLUSIONS LAG-3 knockout or anti-LAG-3 antibody blockade protected mice undergoing CLP from sepsis-associated immunodysfunction and may be a new target for the treatment.
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Affiliation(s)
- Jing-Sheng Lou
- Faculty of Anesthesiology, Changhai Hospital, Second Military Medical University, Shanghai, China.,Anesthesia and Operation Center, Chinese PLA General Hospital, Beijing, China
| | - Jia-Feng Wang
- Faculty of Anesthesiology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Miao-Miao Fei
- Faculty of Anesthesiology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Yan Zhang
- Faculty of Anesthesiology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Jun Wang
- Faculty of Anesthesiology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Yu Guo
- Faculty of Anesthesiology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Jin-Jun Bian
- Faculty of Anesthesiology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Xiao-Ming Deng
- Faculty of Anesthesiology, Changhai Hospital, Second Military Medical University, Shanghai, China
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12
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Zhong H, Lin H, Pang Q, Zhuang J, Liu X, Li X, Liu J, Tang J. Macrophage ICAM-1 functions as a regulator of phagocytosis in LPS induced endotoxemia. Inflamm Res 2021; 70:193-203. [PMID: 33474594 PMCID: PMC7817350 DOI: 10.1007/s00011-021-01437-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 12/16/2020] [Accepted: 01/11/2021] [Indexed: 01/31/2023] Open
Abstract
OBJECTIVE Intracellular adhesion molecule-1 (ICAM-1), a transmembrane glycoprotein belonging to the immunoglobulin superfamily, plays a critical role in mediating cell-cell interaction and outside-in cell signaling during the immune response. ICAM-1 is expressed on the cell surface of several cell types including endothelial cells, epithelial cells, leucocytes, fibroblasts, and neutrophils. Despite ICAM-1 has been detected on macrophage, little is known about the function and mechanism of macrophage ICAM-1. METHODS To investigate the role of lipopolysaccharide (LPS) in ICAM-1 regulation, both the protein and cell surface expression of ICAM-1 were measured. The phagocytosis of macrophage was evaluated by flow cytometry and Confocal microscopy. Small interfering RNA and neutralizing antibody of ICAM-1 were used to assess the effect of ICAM-1 on macrophage phagocytosis. TLR4 gene knockout mouse and cytoplasmic and mitochondrial ROS scavenger were used for the regulation of ICAM-1 expression. ROS was determined using flow cytometry. RESULTS In this study, we reported that macrophage can be stimulated to increase both the protein and cell surface expression of ICAM-1 by LPS. Macrophage ICAM-1 expression was correlated with enhanced macrophage phagocytosis. We found that using ICAM-1 neutralizing antibody or ICAM-1 silencing to attenuate the function or expression of ICAM-1 could decrease LPS-induced macrophage phagocytosis. Furthermore, we found that knocking out of TLR4 led to inhibited cytoplasmic and mitochondrial ROS production, which in turn, attenuated ICAM-1 expression at both the protein and cell surface levels. CONCLUSION This study demonstrates that the mechanism of ICAM-1-mediated macrophage phagocytosis is depending on TLR4-mediated ROS production and provides significant light on macrophage ICAM-1 in endotoxemia.
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Affiliation(s)
- Hanhui Zhong
- Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Haitao Lin
- Health Management Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524000, Guangdong, China
| | - Qiongni Pang
- The Department of Anesthesiology, Nanfang Hospital, SouthernMedicalUniversity, Guangzhou, 510515, Guangdong, China
| | - Jinling Zhuang
- The Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524000, Guangdong, China
- The Department of Anesthesiology, Nanfang Hospital, SouthernMedicalUniversity, Guangzhou, 510515, Guangdong, China
| | - Xiaolei Liu
- The Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524000, Guangdong, China
| | - Xiaolian Li
- The Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524000, Guangdong, China
| | - Jinghua Liu
- Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China.
| | - Jing Tang
- Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China.
- The Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524000, Guangdong, China.
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13
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Cohen JT, Danise M, Machan JT, Zhao R, Lefort CT. Murine Myeloid Progenitors Attenuate Immune Dysfunction Induced by Hemorrhagic Shock. Stem Cell Reports 2021; 16:324-336. [PMID: 33482101 PMCID: PMC7878835 DOI: 10.1016/j.stemcr.2020.12.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 12/20/2020] [Accepted: 12/21/2020] [Indexed: 12/11/2022] Open
Abstract
Hemorrhagic shock induces an aberrant immune response characterized by simultaneous induction of a proinflammatory state and impaired host defenses. The objective of this study was to evaluate the impact of conditionally immortalized neutrophil progenitors (NPs) on this aberrant immune response. We employed a mouse model of hemorrhagic shock, followed by the adoptive transfer of NPs and subsequent inoculation of Staphylococcus aureus to induce pneumonia. We observed that transplant of NPs decreases the proportion of host neutrophils that express programmed death ligand 1 and intercellular adhesion molecule 1 in the context of prior hemorrhage. Following hemorrhage, NP transplant decreased proinflammatory cytokines in the lungs, increased neutrophil migration into the airspaces, and enhanced bacterial clearance. Further, hemorrhagic shock improved NP engraftment in the bone marrow. These results suggest that NPs hold the potential for use as a cellular therapy in the treatment and prevention of secondary infection following hemorrhagic shock. Myeloid progenitors restore a competent inflammatory response to pneumonia Progenitor transplantation promotes clearance of secondary S. aureus pneumonia Hemorrhagic shock enhances engraftment of transplanted myeloid progenitors
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Affiliation(s)
- Joshua T Cohen
- Division of Surgical Research, Department of Surgery, Rhode Island Hospital, 593 Eddy Street, Providence, RI 02903, USA
| | - Michael Danise
- Division of Surgical Research, Department of Surgery, Rhode Island Hospital, 593 Eddy Street, Providence, RI 02903, USA
| | - Jason T Machan
- Lifespan Biostatistics Core, Rhode Island Hospital, Providence, RI 02903, USA
| | - Runping Zhao
- Division of Surgical Research, Department of Surgery, Rhode Island Hospital, 593 Eddy Street, Providence, RI 02903, USA
| | - Craig T Lefort
- Division of Surgical Research, Department of Surgery, Rhode Island Hospital, 593 Eddy Street, Providence, RI 02903, USA.
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14
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PD-1 in Tregs predicts the survival in sepsis patients using sepsis-3 criteria: A prospective, two-stage study. Int Immunopharmacol 2020; 89:107175. [PMID: 33223466 DOI: 10.1016/j.intimp.2020.107175] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/28/2020] [Accepted: 11/01/2020] [Indexed: 12/29/2022]
Abstract
BACKGROUND The expression of Tregs co-signaling molecules serves as the marker of immune dysfunction. The present study aimed to verify their predictive role in the 28-day mortality of sepsis patients. METHODS A prospective, observational, two-stage cohort study was conducted. The patients who fulfilled the sepsis-3 criteria were enrolled, and peripheral blood samples were collected within 24 h post-enrollment. The expression of the four co-signaling molecules of Tregs, namely, PD-1, CD28, PD-L1 and CD86, was measured, and sequential organ failure assessment (SOFA) scores were recorded on day 1 of inclusion. Patients were followed up for 28 days or, otherwise, deceased. Multivariate regression analysis was used to assess the independent risk factors for 28-day mortality, and a prognostic prediction model was established, which was verified in the validation set. RESULTS A total of 292 patients were recruited in the study, of which 120 patients were finally included in the analysis, that is 58 patients in stage I (test set) and 62 patients in stage II (validation set). In stage I, 14 (24.1%), patients died during 28 days, and the expression of PD-1 in Tregs (OR:1.037;95%CI:1.003-1.071) and SOFA scores(OR:1.262;95%CI:1.046-1.524) were independent risk factors for 28-day mortality. The ability of Tregs PD-1 in predicting 28-day mortality was validated in stage II (AUC = 0.792). CONCLUSION PD-1 overexpression in Tregs was associated with poor outcomes, and PD-1 in Tregs is considered to be a valuable tool for the prediction of prognosis in septic patients using sepsis-3.0 criteria.
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15
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Dolmatova EV, Wang K, Mandavilli R, Griendling KK. The effects of sepsis on endothelium and clinical implications. Cardiovasc Res 2020; 117:60-73. [PMID: 32215570 DOI: 10.1093/cvr/cvaa070] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 02/03/2020] [Accepted: 03/20/2020] [Indexed: 12/15/2022] Open
Abstract
ABSTRACT Sepsis accounts for nearly 700 000 deaths in Europe annually and is caused by an overwhelming host response to infection resulting in organ failure. The endothelium is an active contributor to sepsis and as such represents a major target for therapy. During sepsis, endothelial cells amplify the immune response and activate the coagulation system. They are both a target and source of inflammation and serve as a link between local and systemic immune responses. In response to cytokines produced by immune cells, the endothelium expresses adhesion molecules and produces vasoactive compounds, inflammatory cytokines, and chemoattractants, thus switching from an anticoagulant to procoagulant state. These responses contribute to local control of infection, but systemic activation can lead to microvascular thrombosis, capillary permeability, hypotension, tissue hypoxia, and ultimately tissue damage. This review focuses on the role of the endothelium in leucocyte adhesion and transmigration as well as production of reactive oxygen and nitrogen species, microRNAs and cytokines, formation of signalling microparticles, and disseminated intravascular coagulation. We also discuss alterations in endothelial permeability and apoptosis. Finally, we review the diagnostic potential of endothelial markers and endothelial pathways as therapeutic targets for this devastating disease.
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Affiliation(s)
- Elena V Dolmatova
- Division of Cardiology, Department of Medicine, Emory University, 101 Woodruff Circle, Atlanta, GA 30322, USA
| | - Keke Wang
- Division of Cardiology, Department of Medicine, Emory University, 101 Woodruff Circle, Atlanta, GA 30322, USA
| | - Rohan Mandavilli
- Division of Cardiology, Department of Medicine, Emory University, 101 Woodruff Circle, Atlanta, GA 30322, USA
| | - Kathy K Griendling
- Division of Cardiology, Department of Medicine, Emory University, 101 Woodruff Circle, Atlanta, GA 30322, USA
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16
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Denning NL, Aziz M, Gurien SD, Wang P. DAMPs and NETs in Sepsis. Front Immunol 2019; 10:2536. [PMID: 31736963 PMCID: PMC6831555 DOI: 10.3389/fimmu.2019.02536] [Citation(s) in RCA: 329] [Impact Index Per Article: 65.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 10/11/2019] [Indexed: 12/21/2022] Open
Abstract
Sepsis is a deadly inflammatory syndrome caused by an exaggerated immune response to infection. Much has been focused on host response to pathogens mediated through the interaction of pathogen-associated molecular patterns (PAMPs) and pattern recognition receptors (PRRs). PRRs are also activated by host nuclear, mitochondrial, and cytosolic proteins, known as damage-associated molecular patterns (DAMPs) that are released from cells during sepsis. Some well described members of the DAMP family are extracellular cold-inducible RNA-binding protein (eCIRP), high mobility group box 1 (HMGB1), histones, and adenosine triphosphate (ATP). DAMPs are released from the cell through inflammasome activation or passively following cell death. Similarly, neutrophil extracellular traps (NETs) are released from neutrophils during inflammation. NETs are webs of extracellular DNA decorated with histones, myeloperoxidase, and elastase. Although NETs contribute to pathogen clearance, excessive NET formation promotes inflammation and tissue damage in sepsis. Here, we review DAMPs and NETs and their crosstalk in sepsis with respect to their sources, activation, release, and function. A clear grasp of DAMPs, NETs and their interaction is crucial for the understanding of the pathophysiology of sepsis and for the development of novel sepsis therapeutics.
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Affiliation(s)
- Naomi-Liza Denning
- Center for Immunology and Inflammation, Feinstein Institutes for Medical Research, Manhasset, NY, United States.,Elmezzi Graduate School of Molecular Medicine, Manhasset, NY, United States.,Department of Surgery, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, United States
| | - Monowar Aziz
- Center for Immunology and Inflammation, Feinstein Institutes for Medical Research, Manhasset, NY, United States.,Elmezzi Graduate School of Molecular Medicine, Manhasset, NY, United States
| | - Steven D Gurien
- Center for Immunology and Inflammation, Feinstein Institutes for Medical Research, Manhasset, NY, United States.,Department of Surgery, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, United States
| | - Ping Wang
- Center for Immunology and Inflammation, Feinstein Institutes for Medical Research, Manhasset, NY, United States.,Elmezzi Graduate School of Molecular Medicine, Manhasset, NY, United States.,Department of Surgery, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, United States.,Department of Molecular Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, United States
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17
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Cross D, Drury R, Hill J, Pollard AJ. Epigenetics in Sepsis: Understanding Its Role in Endothelial Dysfunction, Immunosuppression, and Potential Therapeutics. Front Immunol 2019; 10:1363. [PMID: 31275313 PMCID: PMC6591469 DOI: 10.3389/fimmu.2019.01363] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 05/29/2019] [Indexed: 12/11/2022] Open
Abstract
Sepsis has a complex pathophysiology in which both excessive and refractory inflammatory responses are hallmark features. Pro-inflammatory cytokine responses during the early stages are responsible for significant endothelial dysfunction, loss of endothelial integrity, and organ failure. In addition, it is now well-established that a substantial number of sepsis survivors experience ongoing immunological derangement and immunosuppression following a septic episode. The underpinning mechanisms of these phenomena are incompletely understood yet they contribute to a significant proportion of sepsis-associated mortality. Epigenetic mechanisms including DNA methylation, histone modifications, and non-coding RNAs, have an increasingly clear role in modulating inflammatory and other immunological processes. Recent evidence suggests epigenetic mechanisms are extensively perturbed as sepsis progresses, and particularly play a role in endothelial dysfunction and immunosuppression. Whilst therapeutic modulation of the epigenome is still in its infancy, there is substantial evidence from animal models that this approach could reap benefits. In this review, we summarize research elucidating the role of these mechanisms in several aspects of sepsis pathophysiology including tissue injury and immunosuppression. We also evaluate pre-clinical evidence for the use of "epi-therapies" in the treatment of poly-microbial sepsis.
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Affiliation(s)
- Deborah Cross
- Oxford Vaccine Group, Department of Paediatrics, NIHR Oxford Biomedical Research Centre, University of Oxford, Oxford, United Kingdom
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18
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Heun Y, Pircher J, Czermak T, Bluem P, Hupel G, Bohmer M, Kraemer BF, Pogoda K, Pfeifer A, Woernle M, Ribeiro A, Hübner M, Kreth S, Claus RA, Weis S, Ungelenk L, Krötz F, Pohl U, Mannell H. Inactivation of the tyrosine phosphatase SHP-2 drives vascular dysfunction in Sepsis. EBioMedicine 2019; 42:120-132. [PMID: 30905847 PMCID: PMC6491420 DOI: 10.1016/j.ebiom.2019.03.034] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 03/12/2019] [Accepted: 03/12/2019] [Indexed: 12/20/2022] Open
Abstract
Background Sepsis, the most severe form of infection, involves endothelial dysfunction which contributes to organ failure. To improve therapeutic prospects, elucidation of molecular mechanisms underlying endothelial vascular failure is of essence. Methods Polymicrobial contamination induced sepsis mouse model and primary endothelial cells incubated with sepsis serum were used to study SHP-2 in sepsis-induced endothelial inflammation. SHP-2 activity was assessed by dephosphorylation of pNPP, ROS production was measured by DCF oxidation and protein interactions were assessed by proximity ligation assay. Vascular inflammation was studied in the mouse cremaster model and in an in vitro flow assay. Findings We identified ROS-dependent inactivation of the tyrosine phosphatase SHP-2 to be decisive for endothelial activation in sepsis. Using in vivo and in vitro sepsis models, we observed a significant reduction of endothelial SHP-2 activity, accompanied by enhanced adhesion molecule expression. The impaired SHP-2 activity was restored by ROS inhibitors and an IL-1 receptor antagonist. SHP-2 activity inversely correlated with the adhesive phenotype of endothelial cells exposed to IL-1β as well as sepsis serum via p38 MAPK and NF-κB. In vivo, SHP-2 inhibition accelerated IL-1β-induced leukocyte adhesion, extravasation and vascular permeability. Mechanistically, SHP-2 directly interacts with the IL-1R1 adaptor protein MyD88 via its tyrosine 257, resulting in reduced binding of p85/PI3-K to MyD88. Interpretation Our data show that SHP-2 inactivation by ROS in sepsis releases a protective break, resulting in endothelial activation. Fund German Research Foundation, LMU Mentoring excellence and FöFoLe Programme, Verein zur Förderung von Wissenschaft und Forschung, German Ministry of Education and Research.
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Affiliation(s)
- Yvonn Heun
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University, Marchioninistr 27, München 81377, Germany; Biomedical Center, Ludwig-Maximilians-University, Großhaderner Str. 9, Planegg 82152, Germany
| | - Joachim Pircher
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Marchioninistrasse 15, Munich 81377, Germany; DZHK (German Center for Cardiovascular Research) partner site Munich Heart Alliance, Munich, Germany
| | - Thomas Czermak
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Marchioninistrasse 15, Munich 81377, Germany
| | - Philipp Bluem
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University, Marchioninistr 27, München 81377, Germany; Biomedical Center, Ludwig-Maximilians-University, Großhaderner Str. 9, Planegg 82152, Germany
| | - Georg Hupel
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University, Marchioninistr 27, München 81377, Germany; Biomedical Center, Ludwig-Maximilians-University, Großhaderner Str. 9, Planegg 82152, Germany
| | - Monica Bohmer
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University, Marchioninistr 27, München 81377, Germany; Biomedical Center, Ludwig-Maximilians-University, Großhaderner Str. 9, Planegg 82152, Germany
| | - Bjoern F Kraemer
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Marchioninistrasse 15, Munich 81377, Germany
| | - Kristin Pogoda
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University, Marchioninistr 27, München 81377, Germany; Biomedical Center, Ludwig-Maximilians-University, Großhaderner Str. 9, Planegg 82152, Germany
| | - Alexander Pfeifer
- Institute of Pharmacology and Toxicology, Biomedical Center University of Bonn, Sigmund-Freud-Straße 25, Bonn 53105, Germany
| | - Markus Woernle
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Ziemssenstr.1, Munich 80336, Germany
| | - Andrea Ribeiro
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Ziemssenstr.1, Munich 80336, Germany
| | - Max Hübner
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University, Marchioninistr 27, München 81377, Germany; Department of Anesthesiology, Klinikum der Universität München, Marchioninistraße 15, München 81377, Germany
| | - Simone Kreth
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University, Marchioninistr 27, München 81377, Germany; Department of Anesthesiology, Klinikum der Universität München, Marchioninistraße 15, München 81377, Germany
| | - Ralf A Claus
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Jena 07747, Germany
| | - Sebastian Weis
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Jena 07747, Germany; Institute for Infectious Disease and Infection Control, Jena University Hospital, Jena 07747, Germany; Center for Sepsis Control and Care, Jena University Hospital, Jena 07747, Germany
| | - Luisa Ungelenk
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Jena 07747, Germany
| | - Florian Krötz
- Interventional Cardiology, Starnberg Community Hospital, Oßwaldstr. 1, Starnberg 82319, Germany
| | - Ulrich Pohl
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University, Marchioninistr 27, München 81377, Germany; Biomedical Center, Ludwig-Maximilians-University, Großhaderner Str. 9, Planegg 82152, Germany; DZHK (German Center for Cardiovascular Research) partner site Munich Heart Alliance, Munich, Germany; Munich Cluster for Systems Neurology, (SyNergy), Munich, Germany
| | - Hanna Mannell
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University, Marchioninistr 27, München 81377, Germany; Biomedical Center, Ludwig-Maximilians-University, Großhaderner Str. 9, Planegg 82152, Germany; Hospital Pharmacy, University Hospital, Ludwig-Maximilians-University, Marchioninistraße 15, München 81377, Germany; DZHK (German Center for Cardiovascular Research) partner site Munich Heart Alliance, Munich, Germany.
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19
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Ode Y, Aziz M, Wang P. CIRP increases ICAM-1 + phenotype of neutrophils exhibiting elevated iNOS and NETs in sepsis. J Leukoc Biol 2018; 103:693-707. [PMID: 29345380 DOI: 10.1002/jlb.3a0817-327rr] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 12/15/2017] [Accepted: 12/16/2017] [Indexed: 12/29/2022] Open
Abstract
Sepsis represents uncontrolled inflammation due to an infection. Cold-inducible RNA-binding protein (CIRP) is a stress-induced damage-associated molecular pattern (DAMP). A subset of neutrophils expressing ICAM-1+ neutrophils was previously shown to produce high levels of reactive oxygen species. The role of CIRP for the development and function of ICAM-1+ neutrophils during sepsis is unknown. We hypothesize that CIRP induces ICAM-1 expression in neutrophils causing injury to the lungs during sepsis. Using a mouse model of cecal ligation and puncture (CLP)-induced sepsis, we found increased expression of CIRP and higher frequencies and numbers of ICAM-1+ neutrophils in the lungs. Conversely, the CIRP-/- mice showed significant inhibition in the frequencies and numbers of ICAM-1+ neutrophils in the lungs compared to wild-type (WT) mice in sepsis. In vitro treatment of bone marrow-derived neutrophils (BMDN) with recombinant murine CIRP (rmCIRP) significantly increased ICAM-1+ phenotype in a time- and dose-dependent manner. The effect of rmCIRP on increasing frequencies of ICAM-1+ neutrophils was significantly attenuated in BMDN treated with anti-TLR4 Ab or NF-κB inhibitor compared, respectively, with BMDN treated with isotype IgG or DMSO. The frequencies of iNOS producing and neutrophil extracellular traps (NETs) forming phenotypes in rmCIRP-treated ICAM-1+ BMDN were significantly higher than those in ICAM-1- BMDN. Following sepsis the ICAM-1+ neutrophils in the lungs showed significantly higher levels of iNOS and NETs compared to ICAM-1- neutrophils. We further revealed that ICAM-1 and NETs were co-localized in the neutrophils treated with rmCIRP. CIRP-/- mice showed significant improvement in their survival outcome (78% survival) over that of WT mice (48% survival) in sepsis. Thus, CIRP could be a novel therapeutic target for regulating iNOS producing and NETs forming ICAM-1+ neutrophils in the lungs during sepsis.
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Affiliation(s)
- Yasumasa Ode
- Center for Immunology and Inflammation, The Feinstein Institute for Medical Research, Manhasset, New York, USA
| | - Monowar Aziz
- Center for Immunology and Inflammation, The Feinstein Institute for Medical Research, Manhasset, New York, USA
| | - Ping Wang
- Center for Immunology and Inflammation, The Feinstein Institute for Medical Research, Manhasset, New York, USA.,Department of Surgery and Molecular Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, New York, USA
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Zhang SK, Zhuo YZ, Li CX, Yang L, Gao HW, Wang XM. Xuebijing Injection () and Resolvin D1 Synergize Regulate Leukocyte Adhesion and Improve Survival Rate in Mice with Sepsis-Induced Lung Injury. Chin J Integr Med 2017; 24:272-277. [PMID: 28497397 DOI: 10.1007/s11655-017-2959-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To investigate the effect of combined application of Xuebijing Injection ( , XBJ) and resolvin D1 (RvD1) on survival rate and the underlying mechanisms in mice with sepsisinduced lung injury. METHODS The cecal ligation and puncture (CLP) method was used to develop a mouse sepsis model. Specific pathogen free male C57BL/6 mice were randomly divided into 5 groups (n=20 each): sham, CLP, CLP+XBJ, CLP+RvD1 and CLP+XBJ+RvD1. After surgery, mice in the CLP+XBJ, CLP+RvD1 and CLP+XBJ+RvD1 groups were given XBJ (25 μL/g body weight), RvD1 (10 ng/g body weight), and their combination (the same dose of XBJ and RvD1), respectively. In each group, 12 mice were used to observe 1-week survival rate, while the rest were executed at 12 h. Whole blood was collected for flow cytometric analysis of leukocyte adhesion molecules CD18, lung tissues were harvested for observing pathological changes, and testing the activity of myeloperoxidase (MPO) and the expression of intercellular cell adhesion molecule 1 (ICAM-1). RESULTS Compared with the CLP group, the histopathological damage of the lung tissues was mitigated, MPO activity was decreased in the CLP+XBJ and CLP+RvD1 groups (P<0.05). In addition, the 1-week survival rate was improved, proportion of CD18-expressing cells in whole blood and ICAM-1 protein expression in lung tissue were decreased in the CLP+XBJ+RvD1 group (P<0.05 or P<0.01). CONCLUSIONS XBJ together with RvD1 could effectively inhibit leukocyte adhesion, reduce lung injury, and improve the survival rate of mice with sepsis.
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Affiliation(s)
- Shu-Kun Zhang
- Department of Cell and Molecular Biology, Institute of Acute Abdominal Diseases of Intergrated Traditional Chinese and Western Medicine, Tianjin Nankai Hospital, Tianjin, 300100, China
| | - Yu-Zhen Zhuo
- Department of Cell and Molecular Biology, Institute of Acute Abdominal Diseases of Intergrated Traditional Chinese and Western Medicine, Tianjin Nankai Hospital, Tianjin, 300100, China
| | - Cai-Xia Li
- Department of Cell and Molecular Biology, Institute of Acute Abdominal Diseases of Intergrated Traditional Chinese and Western Medicine, Tianjin Nankai Hospital, Tianjin, 300100, China
| | - Lei Yang
- Department of Cell and Molecular Biology, Institute of Acute Abdominal Diseases of Intergrated Traditional Chinese and Western Medicine, Tianjin Nankai Hospital, Tianjin, 300100, China
| | - Hong-Wei Gao
- Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Xi-Mo Wang
- Department of Surgery, Tianjin Nankai Hospital, Tianjin, 300100, China.
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Ju Z, Ma J, Wang C, Yu J, Qiao Y, Hei F. Exosomes from iPSCs Delivering siRNA Attenuate Intracellular Adhesion Molecule-1 Expression and Neutrophils Adhesion in Pulmonary Microvascular Endothelial Cells. Inflammation 2017; 40:486-496. [PMID: 28000095 DOI: 10.1007/s10753-016-0494-0] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The pro-inflammatory activation of pulmonary microvascular endothelial cells resulting in continuous expression of cellular adhesion molecules, and subsequently recruiting primed neutrophils to form a firm neutrophils-endothelium (PMN-EC) adhesion, has been examined and found to play a vital role in acute lung injury (ALI). RNA interference (RNAi) is a cellular process through harnessing a natural pathway silencing target gene based on recognition and subsequent degradation of specific mRNA sequences. It opens a promising approach for precision medicine. However, this application was hampered by many obstacles, such as immunogenicity, instability, toxicity problems, and difficulty in across the biological membrane. In this study, we reprogrammed urine exfoliated renal epithelial cells into human induced pluripotent stem cells (huiPSCs) and purified the exosomes (Exo) from huiPSCs as RNAi delivery system. Through choosing the episomal system to deliver transcription factors, we obtained a non-integrating huiPSCs. Experiments in both vitro and vivo demonstrated that these huiPSCs possess the pluripotent properties. The exosomes of huiPSCs isolated by differential centrifugation were visualized by transmission electron microscopy (TEM) showing a typical exosomal appearance with an average diameter of 122 nm. Immunoblotting confirmed the presence of the typical exosomal markers, including CD63, TSG 101, and Alix. Co-cultured PKH26-labeled exosomes with human primary pulmonary microvascular endothelial cells (HMVECs) confirmed that they could be internalized by recipient cells at a time-dependent manner. Then, electroporation was used to introduce siRNA against intercellular adhesion molecule-1 (ICAM-1) into exosomes to form an Exo/siRNA compound. The Exo/siRNA compound efficiently delivered the target siRNA into HMVECs causing selective gene silencing, inhibiting the ICAM-1 protein expression, and PMN-EC adhesion induced by lipopolysaccharide (LPS). These data suggest that huiPSCs exosomes could be used as a natural gene delivery vector to transport therapeutic siRNAs for alleviating inflammatory responses in recipient cells.
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Affiliation(s)
- Zhihai Ju
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
| | - Jinhui Ma
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
| | - Chen Wang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
| | - Jie Yu
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
| | - Yeru Qiao
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
| | - Feilong Hei
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China.
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Boal F, Puhar A, Xuereb JM, Kunduzova O, Sansonetti PJ, Payrastre B, Tronchère H. PI5P Triggers ICAM-1 Degradation in Shigella Infected Cells, Thus Dampening Immune Cell Recruitment. Cell Rep 2016; 14:750-759. [PMID: 26776508 DOI: 10.1016/j.celrep.2015.12.079] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 10/19/2015] [Accepted: 12/16/2015] [Indexed: 12/13/2022] Open
Abstract
Shigella flexneri, the pathogen responsible for bacillary dysentery, has evolved multiple strategies to control the inflammatory response. Here, we show that Shigella subverts the subcellular trafficking of the intercellular adhesion molecule-1 (ICAM-1), a key molecule in immune cell recruitment, in a mechanism dependent on the injected bacterial enzyme IpgD and its product, the lipid mediator PI5P. Overexpression of IpgD, but not a phosphatase dead mutant, induced the internalization and the degradation of ICAM-1 in intestinal epithelial cells. Remarkably, addition of permeant PI5P reproduced IpgD effects and led to the inhibition of neutrophil recruitment. Finally, these results were confirmed in an in vivo model of Shigella infection where IpgD-dependent ICAM-1 internalization reduced neutrophil adhesion. In conclusion, we describe here an immune evasion mechanism used by the pathogen Shigella to divert the host cell trafficking machinery in order to reduce immune cell recruitment.
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Affiliation(s)
- Frédéric Boal
- INSERM U1048, I2MC and Université Paul Sabatier, 31432 Toulouse, France
| | - Andrea Puhar
- INSERM U1202, Unité de Pathogénie Microbienne Moléculaire, Institut Pasteur, 75724 Paris Cedex 15, France; The Laboratory for Molecular Infection Medicine Sweden (MIMS), Umeå Centre for Microbial Research (UCMR) and Department of Molecular Biology, Umeå University, 901 87 Umeå, Sweden
| | - Jean-Marie Xuereb
- INSERM U1048, I2MC and Université Paul Sabatier, 31432 Toulouse, France
| | - Oksana Kunduzova
- INSERM U1048, I2MC and Université Paul Sabatier, 31432 Toulouse, France
| | - Philippe J Sansonetti
- INSERM U1202, Unité de Pathogénie Microbienne Moléculaire, Institut Pasteur, 75724 Paris Cedex 15, France
| | - Bernard Payrastre
- INSERM U1048, I2MC and Université Paul Sabatier, 31432 Toulouse, France; CHU de Toulouse, Laboratoire d'Hématologie, 31059 Toulouse Cedex 03, France
| | - Hélène Tronchère
- INSERM U1048, I2MC and Université Paul Sabatier, 31432 Toulouse, France.
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Tanshinone IIA Protects against Dextran Sulfate Sodium- (DSS-) Induced Colitis in Mice by Modulation of Neutrophil Infiltration and Activation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:7916763. [PMID: 26881040 PMCID: PMC4735939 DOI: 10.1155/2016/7916763] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Revised: 10/09/2015] [Accepted: 10/13/2015] [Indexed: 12/19/2022]
Abstract
Neutrophils play a critical role in the initiation and maintenance of intestinal inflammation. However, conventional neutrophil-targeted therapies can impair normal host defense. Tanshinone IIA has been recently revealed to act directly on neutrophils. Hence, we aimed at investigating whether Tanshinone IIA can protect against experimental colitis through modulation of neutrophils. We induced colitis in C57BL/6 mice by giving 3% dextran sulfate sodium (DSS) orally, and meanwhile, we treated mice daily with Tanshinone IIA intraperitoneally. The severity of colitis was evaluated by calculating disease activity index (DAI) and histological parameters. Neutrophil infiltration and activation in the colons of mice were measured. Moreover, whether Tanshinone IIA has direct effects on neutrophil migration and activation was determined in vitro. Our data showed that Tanshinone IIA significantly ameliorated the severity of DSS-induced colitis in mice, evidenced by the reduced DAI and improved colonic inflammation. In addition, Tanshinone IIA decreased neutrophil infiltration of intestinal mucosa and activation and reduced colonic inflammatory cytokines in DSS-treated mice. Furthermore, Tanshinone IIA was demonstrated to significantly suppress neutrophil migration and activation. These results provide compelling evidence that Tanshinone IIA has a therapeutic potential for alleviating inflammatory colitis in mice, which is possibly mediated by the immunomodulation of neutrophils.
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