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Stimulation of the Migration and Expansion of Adult Mouse Neural Stem Cells by the FPR2-Specific Peptide WKYMVm. Life (Basel) 2021; 11:life11111248. [PMID: 34833124 PMCID: PMC8622362 DOI: 10.3390/life11111248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/10/2021] [Accepted: 11/15/2021] [Indexed: 12/21/2022] Open
Abstract
Neural stem cells (NSCs) are multipotent cells capable of self-renewal and differentiation into different nervous system cells. Mouse NSCs (mNSCs) are useful tools for studying neurogenesis and the therapeutic applications of neurodegenerative diseases in mammals. Formyl peptide receptor 2 (FPR2), expressed in the central nervous system and brain, is involved in the migration and differentiation of murine embryonic-derived NSCs. In this study, we explored the effect of FPR2 activation in adult mNSCs using the synthetic peptide Trp-Lys-Tyr-Met-Val-D-Met-NH2 (WKYMVm), an agonist of FPR2. After isolation of NSCs from the subventricular zone of the adult mouse brain, they were cultured in two culture systems—neurospheres or adherent monolayers—to demonstrate the expression of NSC markers and phenotypes. Under different conditions, mNSCs differentiated into neurons and glial cells such as astrocytes, microglia, and oligodendrocytes. Treatment with WKYMVm stimulated the chemotactic migration of mNSCs. Moreover, WKYMVm-treated mNSCs were found to promote proliferation; this result was confirmed by the expansion of mNSCs in Matrigel and the increase in the number of Ki67-positive cells. Incubation of mNSCs with WKYMVm in a supplement-free medium enhanced the survival rate of the mNSCs. Together, these results suggest that WKYMVm-induced activation of FPR2 stimulates cellular responses in adult NSCs.
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Rosier F, Brisebarre A, Dupuis C, Baaklini S, Puthier D, Brun C, Pradel LC, Rihet P, Payen D. Genetic Predisposition to the Mortality in Septic Shock Patients: From GWAS to the Identification of a Regulatory Variant Modulating the Activity of a CISH Enhancer. Int J Mol Sci 2021; 22:ijms22115852. [PMID: 34072601 PMCID: PMC8198806 DOI: 10.3390/ijms22115852] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 05/12/2021] [Accepted: 05/17/2021] [Indexed: 02/07/2023] Open
Abstract
The high mortality rate in septic shock patients is likely due to environmental and genetic factors, which influence the host response to infection. Two genome-wide association studies (GWAS) on 832 septic shock patients were performed. We used integrative bioinformatic approaches to annotate and prioritize the sepsis-associated single nucleotide polymorphisms (SNPs). An association of 139 SNPs with death based on a false discovery rate of 5% was detected. The most significant SNPs were within the CISH gene involved in cytokine regulation. Among the 139 SNPs associated with death and the 1311 SNPs in strong linkage disequilibrium with them, we investigated 1439 SNPs within non-coding regions to identify regulatory variants. The highest integrative weighted score (IW-score) was obtained for rs143356980, indicating that this SNP is a robust regulatory candidate. The rs143356980 region is located in a non-coding region close to the CISH gene. A CRISPR-Cas9-mediated deletion of this region and specific luciferase assays in K562 cells showed that rs143356980 modulates the enhancer activity in K562 cells. These analyses allowed us to identify several genes associated with death in patients with septic shock. They suggest that genetic variations in key genes, such as CISH, perturb relevant pathways, increasing the risk of death in sepsis patients.
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Affiliation(s)
- Florian Rosier
- Aix Marseille Univ, INSERM, TAGC, UMR_S_1090, MarMaRa Institute, 13288 Marseille, France; (F.R.); (A.B.); (S.B.); (D.P.); (C.B.)
| | - Audrey Brisebarre
- Aix Marseille Univ, INSERM, TAGC, UMR_S_1090, MarMaRa Institute, 13288 Marseille, France; (F.R.); (A.B.); (S.B.); (D.P.); (C.B.)
| | - Claire Dupuis
- Medical Intensive Care Unit, Clermont-Ferrand University Hospital, 58 rue Montalembert, 63003 Clermont-Ferrand, France;
| | - Sabrina Baaklini
- Aix Marseille Univ, INSERM, TAGC, UMR_S_1090, MarMaRa Institute, 13288 Marseille, France; (F.R.); (A.B.); (S.B.); (D.P.); (C.B.)
| | - Denis Puthier
- Aix Marseille Univ, INSERM, TAGC, UMR_S_1090, MarMaRa Institute, 13288 Marseille, France; (F.R.); (A.B.); (S.B.); (D.P.); (C.B.)
| | - Christine Brun
- Aix Marseille Univ, INSERM, TAGC, UMR_S_1090, MarMaRa Institute, 13288 Marseille, France; (F.R.); (A.B.); (S.B.); (D.P.); (C.B.)
- CNRS, 13288 Marseille, France
| | - Lydie C. Pradel
- Aix Marseille Univ, INSERM, TAGC, UMR_S_1090, MarMaRa Institute, 13288 Marseille, France; (F.R.); (A.B.); (S.B.); (D.P.); (C.B.)
- Correspondence: (L.C.P.); (P.R.); (D.P.); Tel.: +33-491828745 (L.C.P.); +33-491828723 (P.R.); +33-687506599 (D.P.)
| | - Pascal Rihet
- Aix Marseille Univ, INSERM, TAGC, UMR_S_1090, MarMaRa Institute, 13288 Marseille, France; (F.R.); (A.B.); (S.B.); (D.P.); (C.B.)
- Correspondence: (L.C.P.); (P.R.); (D.P.); Tel.: +33-491828745 (L.C.P.); +33-491828723 (P.R.); +33-687506599 (D.P.)
| | - Didier Payen
- UMR INSERM 1160: Alloimmunité, Autoimmunité, Transplantation, University of Paris 7 Denis Diderot, 2 rue Ambroise-Paré, CEDEX 10, 75475 Paris, France
- Correspondence: (L.C.P.); (P.R.); (D.P.); Tel.: +33-491828745 (L.C.P.); +33-491828723 (P.R.); +33-687506599 (D.P.)
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Khajah MA, EL-Hashim AZ, Orabi KY, Hawai S, Sary HG. Onion bulb extract can both reverse and prevent colitis in mice via inhibition of pro-inflammatory signaling molecules and neutrophil activity. PLoS One 2020; 15:e0233938. [PMID: 33095803 PMCID: PMC7584208 DOI: 10.1371/journal.pone.0233938] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 10/13/2020] [Indexed: 02/06/2023] Open
Abstract
Background Onion is one of the most commonly used plants in the traditional medicine for the treatment of various diseases. We recently demonstrated the anti-inflammatory properties of onion bulb extract (OBE) in reducing colitis severity in mice when administered at the same time of colitis induction. However, whether onion can reverse established colitis or even prevent its development has not been investigated. Hypothesis To test 1. whether OBE can reduce colitis severity when given either before (preventative approach) or after (treatment approach) colitis induction and if so, 2. what are the mechanisms by which onion can achieve these effects. Methods Colitis was induced by dextran sulfate sodium (DSS) administration using treatment and preventative approaches. The severity of the inflammation was determined by the gross and histological assessments. The colonic level/activity of pro-inflammatory molecules and immune cell markers was assessed by immunofluorescence and western blotting analysis. In vitro neutrophil superoxide release and survival was assessed by chemilumenecense and Annexin-V/7AAD assays respectively. Results OBE treatment significantly reduced colitis severity in both approaches, the colonic expression/activity profile of pro-inflammatory molecules, inhibited WKYMVm-induced superoxide release, and increased spontaneous apoptosis of neutrophils in vitro. Conclusions OBE can be used as an effective option in the prevention and/or the treatment of established colitis.
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Affiliation(s)
- Maitham A. Khajah
- Faculty of Pharmacy, Department of Pharmacology and Therapeutics, Kuwait University, Safat, Kuwait
- * E-mail: ,
| | - Ahmed Z. EL-Hashim
- Faculty of Pharmacy, Department of Pharmacology and Therapeutics, Kuwait University, Safat, Kuwait
| | - Khaled Y. Orabi
- Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Kuwait University, Safat, Kuwait
| | - Sanaa Hawai
- Faculty of Pharmacy, Department of Pharmacology and Therapeutics, Kuwait University, Safat, Kuwait
| | - Hanan G. Sary
- Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Kuwait University, Safat, Kuwait
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Xu Y, Pang SW. Natural killer cell migration control in microchannels by perturbations and topography. LAB ON A CHIP 2019; 19:2466-2475. [PMID: 31225540 DOI: 10.1039/c9lc00356h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Natural killer (NK) cells are lymphocytes which play an important role in the immune system by recognizing and killing potentially malignant cells without antigen sensitization, and could be utilized in cancer therapy. NK cell migration is an essential process to find and kill target cells, which is well known to be driven by the chemotaxis effect. NK cells also experience a topographical effect induced by the extracellular matrix (ECM) during their migration. However, topographical effects on NK cell locomotion in three dimensional (3D) environments are not well studied yet. In this work, polydimethylsiloxane based platforms containing microchannels with different types of perturbations and decorated with various surface patterns were fabricated to systematically study the topographical effect on NK cell migration with and without the chemotaxis effect. The results showed that perturbation sites in channels induced pauses and reversals in chemotaxis driven NK cell migration. Surface topography such as gratings in confined environments could introduce directional preference to NK cell movement even without chemoattractants. These findings showed that NK cell migration could be controlled by contact guidance, which provides future possibility to manipulate NK cell migration in controlled in vitro bioengineering systems. Results in this study showed that the complex topography of 3D microenvironments in the ECM could have significant effects on NK cell migration in different tissues and organs, and provided insight for explaining the dynamics of NK cell activities in clinical experiments.
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Affiliation(s)
- Yuanhao Xu
- Department of Electronic Engineering, Center for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Hong Kong.
| | - Stella W Pang
- Department of Electronic Engineering, Center for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Hong Kong.
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Zhang X, Wang T, Yuan ZC, Dai LQ, Zeng N, Wang H, Liu L, Wen FQ. Mitochondrial peptides cause proinflammatory responses in the alveolar epithelium via FPR-1, MAPKs, and AKT: a potential mechanism involved in acute lung injury. Am J Physiol Lung Cell Mol Physiol 2018; 315:L775-L786. [PMID: 30188748 DOI: 10.1152/ajplung.00466.2017] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Acute lung injury (ALI) is characterized by alveolar epithelial damage and uncontrolled pulmonary inflammation. Mitochondrial damage-associated molecular patterns (DAMPs), including mitochondrial peptides [ N-formyl peptides (NFPs)], are released during cell injury and death and induce inflammation by unclear mechanisms. In this study, we have investigated the role of mitochondrial DAMPs (MTDs), especially NFPs, in alveolar epithelial injury and lung inflammation. In murine models of ALI, high levels of mitochondrial NADH dehydrogenase 1 in bronchoalveolar lavage fluid (BALF) were associated with lung injury scores and increased formyl peptide receptor (FPR)-1 expression in the alveolar epithelium. Cyclosporin H (CsH), a specific inhibitor of FPR1, inhibited lung inflammation in the ALI models. Both MTDs and NFPs upon intratracheal challenge caused accumulation of neutrophils into the alveolar space with elevated BALF levels of mouse chemokine KC, interleukin-1β, and nitric oxide and increased pulmonary FPR-1 levels. CsH significantly attenuated MTDs or NFP-induced inflammatory lung injury and activation of MAPK and AKT pathways. FPR1 expression was present in rat primary alveolar epithelial type II cells (AECIIs) and was increased by MTDs. CsH inhibited MTDs or NFP-induced CINC-1/IL-8 release and phosphorylation of p38, JNK, and AKT in rat AECII and human cell line A549. Inhibitors of MAPKs and AKT also suppressed MTD-induced IL-8 release and NF-κB activation. Collectively, our data indicate an important role of the alveolar epithelium in initiating immune responses to MTDs released during ALI. The potential mechanism may involve increase of IL-8 production in MTD-activated AECII through FPR-1 and its downstream MAPKs, AKT, and NF-κB pathways.
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Affiliation(s)
- Xue Zhang
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China and Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University , Chengdu , China.,Luoyang Orthopedic Hospital of Henan Province, Orthopedic Hospital of Henan Province , Luoyang , China
| | - Tao Wang
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China and Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University , Chengdu , China
| | - Zhi-Cheng Yuan
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China and Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University , Chengdu , China
| | - Lu-Qi Dai
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China and Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University , Chengdu , China
| | - Ni Zeng
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China and Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University , Chengdu , China
| | - Hao Wang
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China and Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University , Chengdu , China
| | - Lian Liu
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China and Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University , Chengdu , China
| | - Fu-Qiang Wen
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China and Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University , Chengdu , China
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Agarwal P, Cole LK, Chandrakumar A, Hauff KD, Ravandi A, Dolinsky VW, Hatch GM. Phosphokinome Analysis of Barth Syndrome Lymphoblasts Identify Novel Targets in the Pathophysiology of the Disease. Int J Mol Sci 2018; 19:ijms19072026. [PMID: 30002286 PMCID: PMC6073761 DOI: 10.3390/ijms19072026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 07/06/2018] [Accepted: 07/09/2018] [Indexed: 12/25/2022] Open
Abstract
Barth Syndrome (BTHS) is a rare X-linked genetic disease in which the specific biochemical deficit is a reduction in the mitochondrial phospholipid cardiolipin (CL) as a result of a mutation in the CL transacylase tafazzin. We compared the phosphokinome profile in Epstein-Barr-virus-transformed lymphoblasts prepared from a BTHS patient with that of an age-matched control individual. As expected, mass spectrometry analysis revealed a significant (>90%) reduction in CL in BTHS lymphoblasts compared to controls. In addition, increased oxidized phosphatidylcholine (oxPC) and phosphatidylethanolamine (PE) levels were observed in BTHS lymphoblasts compared to control. Given the broad shifts in metabolism associated with BTHS, we hypothesized that marked differences in posttranslational modifications such as phosphorylation would be present in the lymphoblast cells of a BTHS patient. Phosphokinome analysis revealed striking differences in the phosphorylation levels of phosphoproteins in BTHS lymphoblasts compared to control cells. Some phosphorylated proteins, for example, adenosine monophosphate kinase, have been previously validated as bonafide modified phosphorylation targets observed in tafazzin deficiency or under conditions of reduced cellular CL. Thus, we report multiple novel phosphokinome targets in BTHS lymphoblasts and hypothesize that alteration in the phosphokinome profile may provide insight into the pathophysiology of BTHS and potential therapeutic targets.
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Affiliation(s)
- Prasoon Agarwal
- Department of Pharmacology and Therapeutics, University of Manitoba, Winnipeg, MB R3E 3P4, Canada.
- Diabetes Research Envisioned and Accomplished in Manitoba (DREAM), Children's Hospital Research Institute of Manitoba, Winnipeg, MB R3E 3P4, Canada.
- Manitoba Developmental Origins of Chronic Diseases in Children Network (DEVOTION), University of Manitoba, Winnipeg, MB R3E 3P4, Canada.
| | - Laura K Cole
- Department of Pharmacology and Therapeutics, University of Manitoba, Winnipeg, MB R3E 3P4, Canada.
| | - Abin Chandrakumar
- Department of Pharmacology and Therapeutics, University of Manitoba, Winnipeg, MB R3E 3P4, Canada.
- Clinical Research Unit, Children's Hospital Research Institute of Manitoba, Winnipeg, MB R3E 3P4, Canada.
| | - Kristin D Hauff
- Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC V6T 2B5, Canada.
| | - Amir Ravandi
- Physiology and Pathophysiology, University of Manitoba, St. Boniface Hospital Research Center, Winnipeg, MB R2H 2A6, Canada.
| | - Vernon W Dolinsky
- Department of Pharmacology and Therapeutics, University of Manitoba, Winnipeg, MB R3E 3P4, Canada.
- Diabetes Research Envisioned and Accomplished in Manitoba (DREAM), Children's Hospital Research Institute of Manitoba, Winnipeg, MB R3E 3P4, Canada.
- Manitoba Developmental Origins of Chronic Diseases in Children Network (DEVOTION), University of Manitoba, Winnipeg, MB R3E 3P4, Canada.
| | - Grant M Hatch
- Department of Pharmacology and Therapeutics, University of Manitoba, Winnipeg, MB R3E 3P4, Canada.
- Diabetes Research Envisioned and Accomplished in Manitoba (DREAM), Children's Hospital Research Institute of Manitoba, Winnipeg, MB R3E 3P4, Canada.
- Center for Research and Treatment of Atherosclerosis, University of Manitoba, Winnipeg, MB R3E 3P4, Canada.
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Dolgachev V, Panicker S, Balijepalli S, McCandless LK, Yin Y, Swamy S, Suresh MV, Delano MJ, Hemmila MR, Raghavendran K, Machado-Aranda D. Electroporation-mediated delivery of FER gene enhances innate immune response and improves survival in a murine model of pneumonia. Gene Ther 2018; 25:359-375. [PMID: 29907877 PMCID: PMC6195832 DOI: 10.1038/s41434-018-0022-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 05/02/2018] [Accepted: 05/11/2018] [Indexed: 12/23/2022]
Abstract
Previously, we reported that electroporation-mediated (EP) delivery of the FER gene improved survival in a combined trauma-pneumonia model. The mechanism of this protective effect is unknown. In this paper, we performed a pneumonia model in C57/BL6 mice with 500 CFU of Klebsiella pneumoniae. After inoculation, a plasmid encoding human FER was delivered by EP into the lung (PNA/pFER-EP). Survival of FER-treated vs. controls (PNA; PNA/EP-pcDNA) was recorded. In parallel cohorts, bronchial alveolar lavage (BAL) and lung were harvested at 24 and 72 h with markers of infection measured. FER-EP-treated animals reduced bacterial counts and had better 5-day survival compared to controls (80 vs. 20 vs. 25%; p < 0.05). Pre-treatment resulted in 100% survival. With FER, inflammatory monocytes were quickly recruited into BAL. These cells had increased surface expression for Toll-receptor 2 and 4, and increased phagocytic and myeloperoxidase activity at 24 h. Samples from FER electroporated animals had increased phosphorylation of STAT transcription factors, varied gene expression of IL1β, TNFα, Nrf2, Nlrp3, Cxcl2, HSP90 and increased cytokine production of TNF-α, CCL-2, KC, IFN-γ, and IL-1RA. In a follow-up experiment, using Methicillin-resistant Staphylococcus aureus (MRSA) similar bacterial reduction effects were obtained with FER gene delivery. We conclude that FER overexpression improves survival through STAT activation enhancing innate immunity and accelerating bacterial clearance in the lung. This constitutes a novel mechanism of inflammatory regulation with therapeutic potential in the setting of hospital-acquired pneumonia.
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Affiliation(s)
- Vladislav Dolgachev
- Division of Acute Care Surgery, University of Michigan, 1500 E Medical Center Dr, UH-1C421, SPC 5033, Ann Arbor, MI, 48109-5033, USA
| | - Sreehari Panicker
- Division of Acute Care Surgery, University of Michigan, 1500 E Medical Center Dr, UH-1C421, SPC 5033, Ann Arbor, MI, 48109-5033, USA
| | - Sanjay Balijepalli
- Division of Acute Care Surgery, University of Michigan, 1500 E Medical Center Dr, UH-1C421, SPC 5033, Ann Arbor, MI, 48109-5033, USA
| | - Lane Kelly McCandless
- Division of Acute Care Surgery, University of Michigan, 1500 E Medical Center Dr, UH-1C421, SPC 5033, Ann Arbor, MI, 48109-5033, USA
| | - Yue Yin
- Division of Acute Care Surgery, University of Michigan, 1500 E Medical Center Dr, UH-1C421, SPC 5033, Ann Arbor, MI, 48109-5033, USA
| | - Samantha Swamy
- Division of Acute Care Surgery, University of Michigan, 1500 E Medical Center Dr, UH-1C421, SPC 5033, Ann Arbor, MI, 48109-5033, USA
| | - M V Suresh
- Division of Acute Care Surgery, University of Michigan, 1500 E Medical Center Dr, UH-1C421, SPC 5033, Ann Arbor, MI, 48109-5033, USA
| | - Matthew J Delano
- Division of Acute Care Surgery, University of Michigan, 1500 E Medical Center Dr, UH-1C421, SPC 5033, Ann Arbor, MI, 48109-5033, USA
| | - Mark R Hemmila
- Division of Acute Care Surgery, University of Michigan, 1500 E Medical Center Dr, UH-1C421, SPC 5033, Ann Arbor, MI, 48109-5033, USA
| | - Krishnan Raghavendran
- Division of Acute Care Surgery, University of Michigan, 1500 E Medical Center Dr, UH-1C421, SPC 5033, Ann Arbor, MI, 48109-5033, USA
| | - David Machado-Aranda
- Division of Acute Care Surgery, University of Michigan, 1500 E Medical Center Dr, UH-1C421, SPC 5033, Ann Arbor, MI, 48109-5033, USA.
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Wang X, Qin W, Zhang Y, Zhang H, Sun B. Endotoxin promotes neutrophil hierarchical chemotaxis via the p38-membrane receptor pathway. Oncotarget 2018; 7:74247-74258. [PMID: 27655676 PMCID: PMC5342050 DOI: 10.18632/oncotarget.12093] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 09/10/2016] [Indexed: 01/09/2023] Open
Abstract
Neutrophils are the most abundant leukocytes in peripheral blood and play critical a role in bacterial infection, tumor immunity and wound repair. Clarifying the process of neutrophil chemotaxis to target sites of immune activity has been a focus of increased interest within the past decade. In bacterial infectious foci, neutrophils migrate toward the bacterial-derived chemoattractant N-formyl-Met-Leu-Phe (fMLP) and ignore other intermediary chemoattractants to arrive at the area of infection. Using an under agarose chemotaxis assay, we observed that the bacterial fMLP-induced neutrophil chemotaxis signal overrode interleukin 8 (IL-8)- and leukotriene B4 (LTB4)-induced chemotaxis signals. Moreover, in the presence of bacterial lipopolysaccharide (LPS), the fMLP-induced hierarchical chemotaxis signal was enhanced. Further studies revealed that LPS increased the membrane expression of the fMLP receptor, formyl peptide receptor 1 (FPR1). However, expression levels of the membrane receptors for IL-8 and LTB4 were decreased by LPS administration. A human Phospho-mitogen-activated protein kinase (MAPK) proteome array showed that the p38 pathway was significantly activated by LPS stimulation. Moreover, p38 was responsible for the altered expression of neutrophil membrane chemoattractant receptors. Inhibition of neutrophil p38 restored LPS-improved hierarchical chemotaxis. Taken together, these data indicate that endotoxin promotes neutrophil hierarchical chemotaxis via the p38-membrane receptor pathway.
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Affiliation(s)
- Xu Wang
- Department of Burn and Plastic Surgery, Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Weiting Qin
- Department of Burn and Plastic Surgery, Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Yisen Zhang
- Department of Burn and Plastic Surgery, Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Huafeng Zhang
- Department of Burn and Plastic Surgery, Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Bingwei Sun
- Department of Burn and Plastic Surgery, Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu Province, China
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Zhong J, Peng L, Wang B, Zhang H, Li S, Yang R, Deng Y, Huang H, Yuan J. Tacrolimus interacts with voriconazole to reduce the severity of fungal keratitis by suppressing IFN-related inflammatory responses and concomitant FK506 and voriconazole treatment suppresses fungal keratitis. Mol Vis 2018; 24. [PMID: 29527115 PMCID: PMC5836723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
PURPOSE To investigate the expression and roles of type I and II interferons (IFNs) in fungal keratitis, as well as the therapeutic effects of tacrolimus (FK506) and voriconazole on this condition. METHODS The mRNA and protein expression levels of type I (IFN-α/β) and II (IFN-γ) IFNs, as well as of related downstream inflammatory cytokines (interleukin (IL)-1α, IL-6, IL-12, and IL-17), were detected in macrophages, neutrophils, lymphocytes, and corneal epithelial cells (A6(1) cells) stimulated with zymosan (10 mg/ml) for 8 or 24 h. A fungal keratitis mouse model was generated through intrastromal injection of Aspergillus fumigatus, and the mice were then divided into four groups: group I, the PBS group; group II, the voriconazole group; group III, the FK506 group; and group IV, the voriconazole plus 0.05% FK506 group. Corneal damage was evaluated with clinical scoring and histological examination. In addition, the mRNA and protein expression levels of type I (IFN-α/β) and type II (IFN-γ) IFNs, as well as related inflammatory cytokines, were determined at different time points using quantitative real-time PCR (qRT-PCR) and western blotting. RESULTS After zymosan stimulation of mouse neutrophils, lymphocytes, macrophages, and A6(1) cells, the IFN mRNA and protein expression levels were markedly increased until 24 h, peaking at 8 h (p<0.001). The mRNA and protein expression levels of inflammatory cytokines (IL-1α, IL-6, IL-12, and IL-17) were also upregulated after zymosan stimulation. Moreover, type I (IFN-α/β) and type II (IFN-γ) IFN expression levels were increased and positively correlated with the progression of fungal keratitis in vivo. FK506 administered with voriconazole reduced the pathological infiltration of inflammatory cells into the cornea and downregulated the expression levels of IFNs and related inflammatory cytokines. CONCLUSIONS In conclusion, this study demonstrated that type I and II IFN levels were markedly increased in fungal keratitis and that FK506 combined with voriconazole decreased the severity of fungal keratitis by suppressing type I and II IFNs and their related inflammatory responses.
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10
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Khajah MA, Fateel MM, Ananthalakshmi KV, Luqmani YA. Anti-inflammatory action of angiotensin 1-7 in experimental colitis may be mediated through modulation of serum cytokines/chemokines and immune cell functions. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2017; 74:200-208. [PMID: 28487234 DOI: 10.1016/j.dci.2017.05.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 04/23/2017] [Accepted: 05/05/2017] [Indexed: 06/07/2023]
Abstract
We recently demonstrated Ang 1-7 reduced inflammation in the dextran sulfate sodium (DSS) colitis model. In this study we examined the effect of Ang 1-7 on modulation of plasma levels of selected cytokines and chemokines and immune cell effector functions (apoptosis, chemotaxis and superoxide release) in vitro. The degree of neutrophil recruitment to the colon was assessed by immunofluorescence and myeloperoxidase activity. Daily Ang 1-7 treatment at 0.01 mg/kg dose which previously ameliorated colitis severity, showed a significant reduction in circulating levels of several cytokines and chemokines, and neutrophil recruitment to the colonic tissue. It also significantly enhanced immune cell apoptosis, and reduced neutrophil chemotaxis and superoxide release in vitro. In contrast, daily administration of the Ang 1-7R antagonist A779 which previously worsened colitis severity showed significant up-regulation of specific mediators. Our results demonstrate a novel anti-inflammatory action of Ang 1-7 through modulation of plasma levels of cytokines/chemokines and immune cell activity.
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Affiliation(s)
- Maitham A Khajah
- Faculty of Pharmacy, Kuwait University, PO Box 24923, Safat 13110, Kuwait.
| | - Maryam M Fateel
- Faculty of Pharmacy, Kuwait University, PO Box 24923, Safat 13110, Kuwait.
| | | | - Yunus A Luqmani
- Faculty of Pharmacy, Kuwait University, PO Box 24923, Safat 13110, Kuwait.
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The FER rs4957796 TT genotype is associated with unfavorable 90-day survival in Caucasian patients with severe ARDS due to pneumonia. Sci Rep 2017; 7:9887. [PMID: 28851893 PMCID: PMC5575093 DOI: 10.1038/s41598-017-08540-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 07/11/2017] [Indexed: 12/23/2022] Open
Abstract
A recent genome-wide association study showed that a genetic variant within the FER gene is associated with survival in patients with sepsis due to pneumonia. Because severe pneumonia is the main cause of acute respiratory distress syndrome (ARDS), we aimed to investigate the effect of the FER polymorphism rs4957796 on the 90-day survival in patients with ARDS due to pneumonia. An assessment of a prospectively collected cohort of 441 patients with ARDS admitted to three intensive care units at the University Medical Centre identified 274 patients with ARDS due to pneumonia. The 90-day mortality risk was recorded as the primary outcome parameter. Sepsis-related organ failure assessment (SOFA) scores and organ support-free days were used as the secondary variables. FER rs4957796 TT-homozygous patients were compared with C-allele carriers. The survival analysis revealed a higher 90-day mortality risk among T homozygotes than among C-allele carriers (p = 0.0144) exclusively in patients with severe ARDS due to pneumonia. The FER rs4957796 TT genotype remained a significant covariate for the 90-day mortality risk in the multivariate analysis (hazard ratio, 4.62; 95% CI, 1.58–13.50; p = 0.0050). In conclusion, FER rs4957796 might act as a prognostic variable for survival in patients with severe ARDS due to pneumonia.
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12
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Liu TC, Naito T, Liu Z, VanDussen KL, Haritunians T, Li D, Endo K, Kawai Y, Nagasaki M, Kinouchi Y, McGovern DP, Shimosegawa T, Kakuta Y, Stappenbeck TS. LRRK2 but not ATG16L1 is associated with Paneth cell defect in Japanese Crohn's disease patients. JCI Insight 2017; 2:e91917. [PMID: 28352666 DOI: 10.1172/jci.insight.91917] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND. Morphological patterns of Paneth cells are a prognostic biomarker in Western Crohn's disease (CD) patients, and are associated with autophagy-associated ATG16L1 and NOD2 variants. We hypothesized that genetic determinants of Paneth cell phenotype in other ethnic CD cohorts are distinct but also involved in autophagy. METHODS. We performed a hypothesis-driven analysis of 56 single nucleotide polymorphisms (SNPs) associated with CD susceptibility or known to affect Paneth cell function in 110 Japanese CD patients who underwent ileal resection. We subsequently performed a genome-wide association analysis. Paneth cell phenotype was determined by defensin-5 immunofluorescence. Selected genotype-Paneth cell defect correlations were compared to a Western CD cohort (n = 164). RESULTS. The average percentage of abnormal Paneth cells in Japanese CD was similar to Western CD (P = 0.87), and abnormal Paneth cell phenotype was also associated with early recurrence (P = 0.013). In contrast to Western CD, ATG16L1 T300A was not associated with Paneth cell defect in Japanese CD (P = 0.20). Among the 56 selected SNPs, only LRRK2 M2397T showed significant association with Paneth cell defect (P = 3.62 × 10-4), whereas in the Western CD cohort it was not (P = 0.76). Pathway analysis of LRRK2 and other candidate genes with P less than 5 × 10-4 showed connections with known CD susceptibility genes and links to autophagy and TNF-α networks. CONCLUSIONS. We found dichotomous effects of ATG16L1 and LRRK2 on Paneth cell defect between Japanese and Western CD. Genes affecting Paneth cell phenotype in Japanese CD were also associated with autophagy. Paneth cell phenotype also predicted prognosis in Japanese CD. FUNDING. Helmsley Charitable Trust, Doris Duke Foundation (grant 2014103), Japan Society for the Promotion of Science (KAKENHI grants JP15H04805 and JP15K15284), Crohn's and Colitis Foundation grant 274415, NIH (grants 1R56DK095820, K01DK109081, and UL1 TR000448).
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Affiliation(s)
- Ta-Chiang Liu
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Takeo Naito
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Zhenqiu Liu
- F. Widjaja Family Foundation Inflammatory Bowel and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Kelli L VanDussen
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Talin Haritunians
- F. Widjaja Family Foundation Inflammatory Bowel and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Dalin Li
- F. Widjaja Family Foundation Inflammatory Bowel and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Katsuya Endo
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yosuke Kawai
- Department of Integrative Genomics, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan
| | - Masao Nagasaki
- Department of Integrative Genomics, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan
| | - Yoshitaka Kinouchi
- Health Administration Center, Center for the Advancement of Higher Education, Tohoku University, Sendai, Japan
| | - Dermot Pb McGovern
- F. Widjaja Family Foundation Inflammatory Bowel and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Tooru Shimosegawa
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yoichi Kakuta
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Thaddeus S Stappenbeck
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri, USA
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Khajah MA, Ananthalakshmi KV, Edafiogho I. Anti-Inflammatory Properties of the Enaminone E121 in the Dextran Sulfate Sodium (DSS) Colitis Model. PLoS One 2016; 11:e0168567. [PMID: 27997590 PMCID: PMC5173236 DOI: 10.1371/journal.pone.0168567] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 12/03/2016] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Enaminones are synthetic compounds with an established role in the prevention of various forms of seizures. Recent evidence suggests potent anti-tussive, bronchodilation and anti-inflammatory properties. Pre-treatment with particularly E121 compound resulted in a decrease in leukocyte recruitment in the ovalbumin induced-model of asthma, immune cell proliferation and cytokine release in vitro. We hypothesize that E121 might serve as a therapeutic potential in intestinal inflammation through modulating immune cell functions. METHODS Colitis was induced by daily dextran sulfate sodium (DSS) administration for 5 days, and its severity was determined by gross and histological assessments. The plasma level of various cytokines was measured using flow cytometry-based assay. The colonic expression/ phosphorylation level of various molecules was determined by immunofluorescence and western blotting. The effects of E121 treatment on in vitro neutrophil chemotaxis (under-agarose assay), superoxide release (luminol oxidation assay) and apoptosis (annexin V/7AAD) were also determined. RESULTS DSS-induced colitis in mice was significantly reduced by daily E121 treatment (30-100 mg/kg) at gross and histological levels. This effect was due to modulated plasma levels of interleukin (IL-2) and colonic expression levels of various signaling molecules and proteins involved in apoptosis. In vitro neutrophil survival, chemotaxis, and superoxide release were also reduced by E121 treatment. CONCLUSION Our results indicate important anti-inflammatory actions of E121 in the pathogenesis of IBD.
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Affiliation(s)
| | | | - Ivan Edafiogho
- Department of Pharmaceutical Sciences, University of Saint Joseph School of Pharmacy, Hartford, Connecticut, United States of America
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14
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Mitsunari K, Miyata Y, Watanabe SI, Asai A, Yasuda T, Kanda S, Sakai H. Stromal expression of Fer suppresses tumor progression in renal cell carcinoma and is a predictor of survival. Oncol Lett 2016; 13:834-840. [PMID: 28356966 DOI: 10.3892/ol.2016.5481] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Accepted: 10/21/2016] [Indexed: 11/06/2022] Open
Abstract
Fps/Fes related (Fer) is a non-receptor tyrosine kinase that is expressed in fibroblasts, immune cells and endothelial cells. Fer serves an important pathological role in cell survival, angiogenesis and the immune system. However, the pathological role of Fer expression in the stromal cells surrounding renal cell carcinoma (RCC) has not been previously investigated. In the present study, immunohistochemical analysis of Fer was performed using the formalin-fixed tissue samples of 152 patients with RCC. The proliferative and apoptotic indices were used to represent the percentage of proliferation marker protein Ki-67- and cleaved caspase-3-positive cells, respectively. The microvessel density was defined as the number of cluster of differentiation (CD) 31-positively stained vessels/mm2. In addition, CD57+ and CD68+ cells were counted using semi-quantification of natural killer (NK) cells and macrophages. Fer expression in stromal cells was negatively associated with Fuhrman grade, pathological tumor stage and metastasis (P<0.001). Fer expression in stromal cells was negatively associated with CD68+ macrophage density, whereas it was positively associated with CD57+ NK cell density. Kaplan-Meier estimators indicated that decreased stromal Fer expression was a predictive marker of decreased cause-specific survival rate (P<0.001). Furthermore, low expression of Fer was identified as being an independent marker of decreased cause-specific survival using multivariate analysis (hazard ratio, 7.4; 95% confidence interval, 1.7-33.0; P<0.001). The results of the present study suggested that low Fer expression in stromal cells is associated with increased malignant aggressiveness and decreased survival in patients with RCC. CD57+ NK cell and CD68+ macrophage regulation in cancer-stromal tissue is considered to affect RCC pathology.
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Affiliation(s)
- Kensuke Mitsunari
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8501, Japan
| | - Yasuyoshi Miyata
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8501, Japan
| | - Shin-Ichi Watanabe
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8501, Japan
| | - Akihiro Asai
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8501, Japan
| | - Takuji Yasuda
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8501, Japan
| | - Shigeru Kanda
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8501, Japan
| | - Hideki Sakai
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8501, Japan
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15
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Electroporation-mediated delivery of the FER gene in the resolution of trauma-related fatal pneumonia. Gene Ther 2016; 23:785-796. [PMID: 27454317 PMCID: PMC5096957 DOI: 10.1038/gt.2016.58] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 06/19/2016] [Accepted: 07/11/2016] [Indexed: 12/18/2022]
Abstract
Injured patients with lung contusion (LC) are at risk of developing bacterial pneumonia (PNA) followed by sepsis and death. A recent genome-wide association study (GWAS) showed FER gene expression positively correlating with survival rates among individuals with above conditions. We sought to determine whether electroporation (EP)-mediated delivery of FER gene could indeed improve survival, in a lethal model of combined LC and PNA. C57BL/6 mice sustained unilateral LC, which preceded a 500 Klebsiella colony forming unit (CFU) inoculation by 6 h. In-between these insults, human FER plasmid (pFER) was introduced into the lungs followed by eight EP pulses applied externally (10 ms at 200 V cm-1). Control groups included EP of empty vector (pcDNA3) or Na+/K+-ATPase genes (pPump) and no treatment (LC+PNA). We recorded survival, histology, lung mechanics, bronchial alveolar lavage (BAL) fluid, FER and inflammatory gene expression and bacteriology. The data show that 7-day survival was significantly improved by pFER compared with control groups. pFER increased BAL monocytes and activated antibacterial response genes (nitric oxide synthase (NOS), Fizz). pFER treatment showed decreased lung and blood Klebsiella counts reaching, in some cases, complete sterilization. In conclusion, FER gene delivery promoted survival in LC+PNA mice via recruitment of activated immune cells, improving efficiency of bacterial clearance within contused lung.
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16
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Alvau A, Battistone MA, Gervasi MG, Navarrete FA, Xu X, Sánchez-Cárdenas C, De la Vega-Beltran JL, Da Ros VG, Greer PA, Darszon A, Krapf D, Salicioni AM, Cuasnicu PS, Visconti PE. The tyrosine kinase FER is responsible for the capacitation-associated increase in tyrosine phosphorylation in murine sperm. Development 2016; 143:2325-33. [PMID: 27226326 DOI: 10.1242/dev.136499] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 05/12/2016] [Indexed: 11/20/2022]
Abstract
Sperm capacitation is required for fertilization. At the molecular level, this process is associated with fast activation of protein kinase A. Downstream of this event, capacitating conditions lead to an increase in tyrosine phosphorylation. The identity of the tyrosine kinase(s) mediating this process has not been conclusively demonstrated. Recent experiments using stallion and human sperm have suggested a role for PYK2 based on the use of small molecule inhibitors directed against this kinase. However, crucially, loss-of-function experiments have not been reported. Here, we used both pharmacological inhibitors and genetically modified mice models to investigate the identity of the tyrosine kinase(s) mediating the increase in tyrosine phosphorylation in mouse sperm. Similar to stallion and human, PF431396 blocks the capacitation-associated increase in tyrosine phosphorylation. Yet, sperm from Pyk2(-/-) mice displayed a normal increase in tyrosine phosphorylation, implying that PYK2 is not responsible for this phosphorylation process. Here, we show that PF431396 can also inhibit FER, a tyrosine kinase known to be present in sperm. Sperm from mice targeted with a kinase-inactivating mutation in Fer failed to undergo capacitation-associated increases in tyrosine phosphorylation. Although these mice are fertile, their sperm displayed a reduced ability to fertilize metaphase II-arrested eggs in vitro.
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Affiliation(s)
- Antonio Alvau
- Department of Veterinary and Animal Science, Integrated Sciences Building, University of Massachusetts, Amherst, MA 01003, USA
| | | | - Maria Gracia Gervasi
- Department of Veterinary and Animal Science, Integrated Sciences Building, University of Massachusetts, Amherst, MA 01003, USA
| | - Felipe A Navarrete
- Department of Veterinary and Animal Science, Integrated Sciences Building, University of Massachusetts, Amherst, MA 01003, USA
| | - Xinran Xu
- Department of Electrical and Computer Engineering and School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80521, USA
| | - Claudia Sánchez-Cárdenas
- Departamento de Genética del Desarrollo y Fisiología Molecular, IBT-UNAM, Cuernavaca 62210, México
| | | | - Vanina G Da Ros
- Instituto de Biología y Medicina Experimental (IBYME-CONICET), Buenos Aires C1428ADN, Argentina
| | - Peter A Greer
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada, K7L 3N6
| | - Alberto Darszon
- Departamento de Genética del Desarrollo y Fisiología Molecular, IBT-UNAM, Cuernavaca 62210, México
| | - Diego Krapf
- Department of Electrical and Computer Engineering and School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80521, USA
| | - Ana Maria Salicioni
- Department of Veterinary and Animal Science, Integrated Sciences Building, University of Massachusetts, Amherst, MA 01003, USA
| | - Patricia S Cuasnicu
- Instituto de Biología y Medicina Experimental (IBYME-CONICET), Buenos Aires C1428ADN, Argentina
| | - Pablo E Visconti
- Department of Veterinary and Animal Science, Integrated Sciences Building, University of Massachusetts, Amherst, MA 01003, USA
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17
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Sepsis-induced impairment of neutrophil chemotaxis on a microfluidic chip. Immunol Lett 2016; 173:55-60. [DOI: 10.1016/j.imlet.2016.03.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 03/06/2016] [Accepted: 03/21/2016] [Indexed: 01/09/2023]
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18
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Rautanen A, Mills TC, Gordon AC, Hutton P, Steffens M, Nuamah R, Chiche JD, Parks T, Chapman SJ, Davenport EE, Elliott KS, Bion J, Lichtner P, Meitinger T, Wienker TF, Caulfield MJ, Mein C, Bloos F, Bobek I, Cotogni P, Sramek V, Sarapuu S, Kobilay M, Ranieri VM, Rello J, Sirgo G, Weiss YG, Russwurm S, Schneider EM, Reinhart K, Holloway PAH, Knight JC, Garrard CS, Russell JA, Walley KR, Stüber F, Hill AVS, Hinds CJ. Genome-wide association study of survival from sepsis due to pneumonia: an observational cohort study. THE LANCET. RESPIRATORY MEDICINE 2015; 3:53-60. [PMID: 25533491 PMCID: PMC4314768 DOI: 10.1016/s2213-2600(14)70290-5] [Citation(s) in RCA: 132] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Sepsis continues to be a major cause of death, disability, and health-care expenditure worldwide. Despite evidence suggesting that host genetics can influence sepsis outcomes, no specific loci have yet been convincingly replicated. The aim of this study was to identify genetic variants that influence sepsis survival. METHODS We did a genome-wide association study in three independent cohorts of white adult patients admitted to intensive care units with sepsis, severe sepsis, or septic shock (as defined by the International Consensus Criteria) due to pneumonia or intra-abdominal infection (cohorts 1-3, n=2534 patients). The primary outcome was 28 day survival. Results for the cohort of patients with sepsis due to pneumonia were combined in a meta-analysis of 1553 patients from all three cohorts, of whom 359 died within 28 days of admission to the intensive-care unit. The most significantly associated single nucleotide polymorphisms (SNPs) were genotyped in a further 538 white patients with sepsis due to pneumonia (cohort 4), of whom 106 died. FINDINGS In the genome-wide meta-analysis of three independent pneumonia cohorts (cohorts 1-3), common variants in the FER gene were strongly associated with survival (p=9·7 × 10(-8)). Further genotyping of the top associated SNP (rs4957796) in the additional cohort (cohort 4) resulted in a combined p value of 5·6 × 10(-8) (odds ratio 0·56, 95% CI 0·45-0·69). In a time-to-event analysis, each allele reduced the mortality over 28 days by 44% (hazard ratio for death 0·56, 95% CI 0·45-0·69; likelihood ratio test p=3·4 × 10(-9), after adjustment for age and stratification by cohort). Mortality was 9·5% in patients carrying the CC genotype, 15·2% in those carrying the TC genotype, and 25·3% in those carrying the TT genotype. No significant genetic associations were identified when patients with sepsis due to pneumonia and intra-abdominal infection were combined. INTERPRETATION We have identified common variants in the FER gene that associate with a reduced risk of death from sepsis due to pneumonia. The FER gene and associated molecular pathways are potential novel targets for therapy or prevention and candidates for the development of biomarkers for risk stratification. FUNDING European Commission and the Wellcome Trust.
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Affiliation(s)
- Anna Rautanen
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK.
| | - Tara C Mills
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
| | | | | | - Michael Steffens
- Institute for Medical Biometry, Informatics and Epidemiology (IMBIE) of the University of Bonn, Bonn, Germany
| | - Rosamond Nuamah
- William Harvey Research Institute, Barts and The London School of Medicine Queen Mary University of London, London, UK
| | | | - Tom Parks
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Stephen J Chapman
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Emma E Davenport
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
| | | | - Julian Bion
- School of Clinical and Experimental Medicine, University of Birmingham, Birmingham, UK
| | - Peter Lichtner
- Institute of Human Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Thomas Meitinger
- Institute of Human Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany; Technische Universität München, Institute of Human Genetics, Munich, Germany
| | - Thomas F Wienker
- Institute for Medical Biometry, Informatics and Epidemiology (IMBIE) of the University of Bonn, Bonn, Germany
| | - Mark J Caulfield
- William Harvey Research Institute, Barts and The London School of Medicine Queen Mary University of London, London, UK
| | - Charles Mein
- William Harvey Research Institute, Barts and The London School of Medicine Queen Mary University of London, London, UK
| | - Frank Bloos
- Jena University Hospital and Center for Sepsis Control and Care, Jena, Germany
| | - Ilona Bobek
- National Health Service Centre, Budapest, Hungary
| | | | | | | | | | | | - Jordi Rello
- CIBERES, Vall d'Hebron Institute of Research, Universitat Autonoma de Barcelona, Barcelona, Spain
| | - Gonzalo Sirgo
- Joan XXIII University Hospital, Pere Virgili Health Institute, University Rovirai Virgili, Tarragona, Spain
| | | | | | - E Marion Schneider
- Section of Experimental Anesthesiology, University Hospital, Ulm, Germany
| | - Konrad Reinhart
- Jena University Hospital and Center for Sepsis Control and Care, Jena, Germany
| | | | - Julian C Knight
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
| | | | | | | | - Frank Stüber
- Department of Anaesthesiology and Pain Medicine, Bern University Hospital, and University of Bern, Switzerland
| | - Adrian V S Hill
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Charles J Hinds
- William Harvey Research Institute, Barts and The London School of Medicine Queen Mary University of London, London, UK
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Tao Z, Gao J, Zhang G, Xue M, Yang W, Tong C, Yuan Y. Shufeng Jiedu Capsule protect against acute lung injury by suppressing the MAPK/NF-κB pathway. Biosci Trends 2014; 8:45-51. [PMID: 24647112 DOI: 10.5582/bst.8.45] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
This study sought to investigate the protective effect of an alternative medicine, Shufeng Jiedu Capsule, in acute lung injury and inflammation signaling pathways related to that action. Hematoxylin and eosin (HE) staining was used to observe pathological changes in rat lung tissue, arterial blood was subjected to blood gas analysis and lactic acid levels were determined, immunofluorescent staining for interleukin-1β (IL-1β) was performed, enzyme linked immunosorbent assay (ELISA) was used to detect biomarkers of the nuclear factor-κB (NF-κB) inflammation pathway including IL-1β and tumor necrosis factor α (TNF-α), biomarkers of the mitogen-activated protein kinase (MAPK) signal pathway including P-selectin, transforming growth factor β (TGF-β), keratinocyte-derived chemokine (KC), and C-Jun/AP-1 were measured, and real-time PCR was used to detect NF-κB mRNA. Results in rats with lipopolysaccharide-induced acute lung injury suggested that Shufeng Jiedu Capsule may increase the partial pressure of oxygen in lung tissue, decrease lactic acid levels, inhibit inflammatory factors such as IL-1β and TNF-α, and suppress the levels of P-selectin, TGF-β, KC, C-Jun/AP-1, and NF-κB mRNA. Thus, Shufeng Jiedu Capsule is a traditional medicine that may alleviate acute lung injury by suppressing the MAPK/NF-κB signaling pathway.
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Affiliation(s)
- Zhengang Tao
- Emergency Department, Zhongshan Hospital, Fudan University
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20
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Lithium chloride promotes host resistance against Pseudomonas aeruginosa keratitis. Mol Vis 2013; 19:1502-14. [PMID: 23878501 PMCID: PMC3716469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Accepted: 07/16/2013] [Indexed: 10/25/2022] Open
Abstract
PURPOSE To explore the role of lithium chloride (LiCl) in Pseudomonas aeruginosa (PA) keratitis. METHODS B6 mice were subconjunctivally injected with LiCl in contrast to appropriate control sodium chloride (NaCl), and then routinely infected with PA. Clinical score, slit-lamp photography, hematoxylin and eosin (H&E) staining, and bacterial plate counts were used to determine the role of LiCl in PA keratitis. Messenger ribonucleic acid and protein levels of inflammatory cytokines in PA-challenged mouse corneas and in vitro cultured macrophages and neutrophils were measured with real-time PCR and enzyme-linked immunosorbent assay (ELISA), respectively. Apoptosis of the infiltrating inflammatory cells in the PA-infected murine corneas was assessed using terminal deoxynucleotidyl transferase-mediated uridine 5'-triphosphate-biotin nick end labeling staining and propidium iodide staining associated with flow cytometry. In cultured murine macrophages and neutrophils, cell apoptosis was determined with annexin V/propidium iodide double staining associated with flow cytometry and western blot analysis for cleaved caspase-3 and cleaved poly(ADP-ribose) polymerase. RESULTS Treatment with LiCl reduced the severity of corneal disease by reducing corneal inflammatory response and bacterial burden. Moreover, LiCl increased anti-inflammatory cytokine interleukin-10 levels, decreased proinflammatory cytokine tumor necrosis factor-α levels, and enhanced apoptosis of infiltrating macrophages and neutrophils in the PA-infected mouse corneas. In vitro studies further confirmed that LiCl elevated anti-inflammatory cytokine expression but reduced proinflammatory cytokine production, as well as promoted cell apoptosis in murine macrophages and neutrophils. CONCLUSIONS This study demonstrates a protective role of LiCl in PA keratitis. LiCl promotes host resistance against PA infection by suppressing inflammatory responses, enhancing inflammatory cell apoptosis, and promoting bacterial clearance.
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