1
|
Fan H, Wang Y, Zhao K, Su L, Deng C, Huang J, Chen G. Incomplete Knockdown of MyD88 Inhibits LPS-Induced Lung Injury and Lung Fibrosis in a Mouse Model. Inflammation 2023; 46:2276-2288. [PMID: 37606850 DOI: 10.1007/s10753-023-01877-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 05/12/2023] [Accepted: 07/13/2023] [Indexed: 08/23/2023]
Abstract
Acute lung injury (ALI) is a life-threatening disorder stemmed mainly from an uncontrolled inflammatory response. Lipopolysaccharide (LPS) is commonly used to induce ALI animal models. Toll-like receptor 4 (TLR4) is the main receptor for LPS, and myeloid differentiation factor 88 (MyD88) is a key adaptor protein molecule in the Toll-like receptor (TLR) signaling pathway. Thus, MyD88 knockdown heterozygous mice (MyD88+/-) were used to investigate the effect of incomplete knockout of the MyD88 gene on indirect LPS-induced ALI through intraperitoneal injection of LPS. The LPS-induced ALI significantly upregulated MyD88 expression, and heterozygous mice with incomplete knockout of the MyD88 gene (MyD88+/-) ameliorated LPS-induced histopathological injury and collagen fiber deposition. Heterozygous mice with incomplete knockout of the MyD88 gene (MyD88+/-) inhibited LPS-induced nuclear factor-κB (NF-κB) pathway activation, but TLR-4 expression tended to be upregulated. Incomplete knockdown of the MyD88 gene also downregulated LPS-induced expression of IL1-β, IL-6, TNF-α, TGF-β, SMAD2, and α-SMA. The transcriptome sequencing also revealed significant changes in LPS-regulated genes (such as IL-17 signaling pathway genes) after the incomplete knockdown of MyD88. In conclusion, this paper clarified that LPS activates the downstream NF-κB pathway depending on the MyD88 signaling pathway, which induces the secretion of inflammatory cytokines such as IL-1β/IL-6/TNF-α and ultimately triggers ALI. Incomplete knockdown of the MyD88 reverses LPS-induced lung fibrosis, which confirmed the vital role of MyD88 in LPS-induced ALI.
Collapse
Affiliation(s)
- Hui Fan
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Yanni Wang
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Kaochang Zhao
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Li Su
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Chong Deng
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Jie Huang
- Research Center for Stem Cell Engineering and Technology, Institute of Industrial Technology, Chongqing University, Chongqing, China
- Better Biotechnology LLC, Chongqing, China
| | - Guozhong Chen
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China.
| |
Collapse
|
2
|
Xiong C, Huang X, Chen S, Li Y. Role of Extracellular microRNAs in Sepsis-Induced Acute Lung Injury. J Immunol Res 2023; 2023:5509652. [PMID: 37378068 PMCID: PMC10292948 DOI: 10.1155/2023/5509652] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 05/13/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023] Open
Abstract
Acute lung injury (ALI) is a life-threatening pathological disease characterized by the damage of pulmonary endothelial cells and epithelial cell barriers by uncontrolled inflammation. During sepsis-induced ALI, multiple cells cooperate and communicate with each other to respond to the stimulation of inflammatory factors. However, the underlying mechanisms of action have not been fully identified, and the modes of communication therein are also being investigated. Extracellular vesicles (EVs) are a heterogeneous population of spherical membrane structures released by almost all types of cells, containing various cellular components. EVs are primary transport vehicles for microRNAs (miRNAs), which play essential roles in physiological and pathological processes in ALI. EV miRNAs from different sources participated in regulating the biological function of pulmonary epithelial cells, endothelial cells, and phagocytes by transferring miRNA through EVs during ALI induced by sepsis, which has great potential diagnostic and therapeutic values. This study aims to summarize the role and mechanism of extracellular vesicle miRNAs from different cells in the regulation of sepsis-induced ALI. It provides ideas for further exploring the role of extracellular miRNA secreted by different cells in the ALI induced by sepsis, to make up for the deficiency of current understanding, and to explore the more optimal scheme for diagnosis and treatment of ALI.
Collapse
Affiliation(s)
- Chenlu Xiong
- Department of Anesthesiology, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xuan Huang
- The National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, China
| | - Shibiao Chen
- Department of Anesthesiology, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yong Li
- Department of Anesthesiology, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital of Nanchang University, Nanchang, China
| |
Collapse
|
3
|
Yu H, Ju Q, Cheng S. Regulating Function of miR-146a Derived from Bone Marrow Mesenchymal Stem Cell (BMSC) in Acute Lung Injury. J BIOMATER TISS ENG 2022. [DOI: 10.1166/jbt.2022.3183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
This study assesses the mechanism of miR-146a derived from Bone marrow mesenchymal stem cell (BMSC) in acute lung injury. The model of ALI rats was established through endotracheal perfusion of LPS followed by analysis histological changes by HE staining. The source of BMSC was detected
through flow cytometry and change of miRNA was detected through Array method. The miR-146a level in lung tissue was detected with RT-PCR and expression of Bcl-2, Bax and Capase-9 was detected with IF and Western Blot. A high expression of CD90 and CD105 was found in BMSC with negative CD11bc
and CD34 level. 39 downregulated miRNAs and 20 upregulated miRNAs were found in ALI with miR-146a being the most significant. The apoptotic level induced with LPS could be restrained by miR-146a. In addition, miR-146a could upregulate Bcl-2 and downregulate Bax and Caspase-9. In conclusion,
ALI could be restrained by the low expression of miR-146a.
Collapse
Affiliation(s)
- Honglei Yu
- Department of Pediatrics, Xianning Central Hospital, The First Affiliated Hospital of Hubei University of Science and Technology, Xianning, Hubei, 437000, China
| | - Qiu Ju
- Department of Pediatrics, Xianning Central Hospital, The First Affiliated Hospital of Hubei University of Science and Technology, Xianning, Hubei, 437000, China
| | - Shouchao Cheng
- Department of Pediatrics, Xianning Central Hospital, The First Affiliated Hospital of Hubei University of Science and Technology, Xianning, Hubei, 437000, China
| |
Collapse
|
4
|
Yuan X, Mills T, Doursout MF, Evans SE, Vidal Melo MF, Eltzschig HK. Alternative adenosine Receptor activation: The netrin-Adora2b link. Front Pharmacol 2022; 13:944994. [PMID: 35910389 PMCID: PMC9334855 DOI: 10.3389/fphar.2022.944994] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 06/28/2022] [Indexed: 11/25/2022] Open
Abstract
During hypoxia or inflammation, extracellular adenosine levels are elevated. Studies using pharmacologic approaches or genetic animal models pertinent to extracellular adenosine signaling implicate this pathway in attenuating hypoxia-associated inflammation. There are four distinct adenosine receptors. Of these, it is not surprising that the Adora2b adenosine receptor functions as an endogenous feedback loop to control hypoxia-associated inflammation. First, Adora2b activation requires higher adenosine concentrations compared to other adenosine receptors, similar to those achieved during hypoxic inflammation. Second, Adora2b is transcriptionally induced during hypoxia or inflammation by hypoxia-inducible transcription factor HIF1A. Studies seeking an alternative adenosine receptor activation mechanism have linked netrin-1 with Adora2b. Netrin-1 was originally discovered as a neuronal guidance molecule but also functions as an immune-modulatory signaling molecule. Similar to Adora2b, netrin-1 is induced by HIF1A, and has been shown to enhance Adora2b signaling. Studies of acute respiratory distress syndrome (ARDS), intestinal inflammation, myocardial or hepatic ischemia and reperfusion implicate the netrin-Adora2b link in tissue protection. In this review, we will discuss the potential molecular linkage between netrin-1 and Adora2b, and explore studies demonstrating interactions between netrin-1 and Adora2b in attenuating tissue inflammation.
Collapse
Affiliation(s)
- Xiaoyi Yuan
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Tingting Mills
- Department of Biochemistry and Molecular Biology, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Marie-Francoise Doursout
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Scott E. Evans
- Department of Pulmonology, MD Anderson Cancer Center, Houston, TX, United States
| | | | - Holger K. Eltzschig
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
| |
Collapse
|
5
|
Donarska B, Świtalska M, Wietrzyk J, Płaziński W, Mizerska-kowalska M, Zdzisińska B, Łączkowski KZ. Discovery of New 3,3-Diethylazetidine-2,4-dione Based Thiazoles as Nanomolar Human Neutrophil Elastase Inhibitors with Broad-Spectrum Antiproliferative Activity. Int J Mol Sci 2022; 23:7566. [PMID: 35886913 PMCID: PMC9321231 DOI: 10.3390/ijms23147566] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/02/2022] [Accepted: 07/06/2022] [Indexed: 01/03/2023] Open
Abstract
A series of 3,3-diethylazetidine-2,4-dione based thiazoles 3a–3j were designed and synthesized as new human neutrophil elastase (HNE) inhibitors in nanomolar range. The representative compounds 3c, 3e, and 3h exhibit high HNE inhibitory activity with IC50 values of 35.02–44.59 nM, with mixed mechanism of action. Additionally, the most active compounds 3c and 3e demonstrate high stability under physiological conditions. The molecular docking study showed good correlation of the binding energies with the IC50 values, suggesting that the inhibition properties are largely dependent on the stage of ligand alignment in the binding cavity. The inhibition properties are correlated with the energy level of substrates of the reaction of ligand with Ser195. Moreover, most compounds showed high and broad-spectrum antiproliferative activity against human leukemia (MV4-11), human lung carcinoma (A549), human breast adenocarcinoma (MDA-MB-231), and urinary bladder carcinoma (UMUC-3), with IC50 values of 4.59–9.86 μM. Additionally, compounds 3c and 3e can induce cell cycle arrest at the G2/M phase and apoptosis via caspase-3 activation, leading to inhibition of A549 cell proliferation. These findings suggest that these new types of drugs could be used to treat cancer and other diseases in which immunoreactive HNE is produced.
Collapse
|
6
|
Sun X, Shi F, Wang W, Wu Y, Qu S, Li J, Liang H, Zen K. Myeloid-Specific Pyruvate-Kinase-Type-M2-Deficient Mice Are Resistant to Acute Lung Injury. Biomedicines 2022; 10:1193. [PMID: 35625931 PMCID: PMC9138865 DOI: 10.3390/biomedicines10051193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 05/17/2022] [Accepted: 05/19/2022] [Indexed: 02/05/2023] Open
Abstract
Infiltration of polymorphonuclear neutrophils (PMNs) plays a central role in acute lung injury (ALI). The mechanisms governing PMN inflammatory responses, however, remain incompletely understood. Based on our recent study showing a non-metabolic role of pyruvate kinase type M2 (PKM2) in controlling PMN degranulation of secondary and tertiary granules and consequent chemotaxis, here we tested a hypothesis that Pkm2-deficient mice may resist ALI due to impaired PMN inflammatory responses. We found that PMN aerobic glycolysis controlled the degranulation of secondary and tertiary granules induced by fMLP and PMA. Compared to WT PMNs, Pkm2-deficient (Pkm2-/-) PMNs displayed significantly less capacity for fMLP- or PMA-induced degranulation of secondary and tertiary granules, ROS production, and transfilter migration. In line with this, myeloid-specific Pkm2-/- mice exhibited impaired zymosan-induced PMN infiltration in the peritoneal cavity. Employing an LPS-induced ALI mouse model, LPS-treated Pkm2-/- mice displayed significantly less infiltration of inflammatory PMNs in the alveolar space and a strong resistance to LPS-induced ALI. Our results thus reveal that PKM2 is required for PMN inflammatory responses and deletion of PKM2 in PMN leads to an impaired PMN function but protection against LPS-induced ALI.
Collapse
|
7
|
Mahida RY, Price J, Lugg ST, Li H, Parekh D, Scott A, Harrison P, Matthay MA, Thickett DR. CD14-positive extracellular vesicles in bronchoalveolar lavage fluid as a new biomarker of acute respiratory distress syndrome. Am J Physiol Lung Cell Mol Physiol 2022; 322:L617-L624. [PMID: 35234046 PMCID: PMC8993517 DOI: 10.1152/ajplung.00052.2022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Recent studies have indicated that extracellular vesicles (EVs) may play a role in the pathogenesis of acute respiratory distress syndrome (ARDS). EVs have been identified as potential biomarkers of disease severity and prognosis in other pulmonary diseases. We sought to characterize the EV phenotype within bronchoalveolar lavage (BAL) fluid of patients with ARDS, and to determine whether BAL EV could be used as a potential biomarker in ARDS. BAL was collected from patients with sepsis with and without ARDS, and from esophagectomy patients postoperatively (of whom a subset later developed ARDS during hospital admission). BAL EVs were characterized with regard to size, number, and cell of origin. Patients with sepsis-related ARDS had significantly higher numbers of CD14+/CD81+ monocyte-derived BAL EV than patients with sepsis without ARDS (P = 0.015). However, the converse was observed in esophagectomy patients who later developed ARDS (P = 0.003). Esophagectomy patients who developed ARDS also had elevated CD31+/CD63+ and CD31+/CD81+ endothelial-derived BAL EV (P ≤ 0.02) compared with esophagectomy patients who did not develop ARDS. Further studies are required to determine whether CD31+ BAL EV may be a predictive biomarker for ARDS in esophagectomy patients. CD14+/CD81+ BAL EV numbers were significantly higher in those patients with sepsis-related ARDS who died during the 30 days following intensive care unit admission (P = 0.027). Thus, CD14+/CD81+ BAL EVs are a potential biomarker for disease severity and mortality in sepsis-related ARDS. These findings provide the impetus to further elucidate the contribution of these EVs to ARDS pathogenesis.
Collapse
Affiliation(s)
- Rahul Y Mahida
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Joshua Price
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Sebastian T Lugg
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Hui Li
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom.,Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Dhruv Parekh
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Aaron Scott
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Paul Harrison
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Michael A Matthay
- Cardiovascular Research Institute, Departments of Medicine and Anesthesia, University of California, San Francisco, California
| | - David R Thickett
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| |
Collapse
|
8
|
Zhang CN, Li FJ, Zhao ZL, Zhang JN. The role of extracellular vesicles in traumatic brain injury-induced acute lung injury. Am J Physiol Lung Cell Mol Physiol 2021; 321:L885-L891. [PMID: 34549593 DOI: 10.1152/ajplung.00023.2021] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Acute lung injury (ALI), a common complication after traumatic brain injury (TBI), can evolve into acute respiratory distress syndrome (ARDS) and has a mortality rate of 30%-40%. Secondary ALI after TBI exhibits the following typical pathological features: infiltration of neutrophils into the alveolar and interstitial space, alveolar septal thickening, alveolar edema, and hemorrhage. Extracellular vesicles (EVs) were recently identified as key mediators in TBI-induced ALI. Due to their small size and lipid bilayer, they can pass through the disrupted blood-brain barrier (BBB) into the peripheral circulation and deliver their contents, such as genetic material and proteins, to target cells through processes such as fusion, receptor-mediated interactions, and uptake. Acting as messengers, EVs contribute to mediating brain-lung cross talk after TBI. In this review, we aim to summarize the mechanism of EVs in TBI-induced ALI, which may provide new ideas for clinical treatment.
Collapse
Affiliation(s)
- Chao-Nan Zhang
- Department of Neurosurgery, Tianjin Institute of Neurology, grid.412645.0Tianjin Medical University General Hospital, Tianjin, China
| | - Fan-Jian Li
- Department of Neurosurgery, Tianjin Institute of Neurology, grid.412645.0Tianjin Medical University General Hospital, Tianjin, China
| | - Zi-Long Zhao
- Department of Neurosurgery, Tianjin Institute of Neurology, grid.412645.0Tianjin Medical University General Hospital, Tianjin, China
| | - Jian-Ning Zhang
- Department of Neurosurgery, Tianjin Institute of Neurology, grid.412645.0Tianjin Medical University General Hospital, Tianjin, China
| |
Collapse
|
9
|
Kong X, Lin D, Lu L, Lin L, Zhang H, Zhang H. Apelin-13-Mediated AMPK ameliorates endothelial barrier dysfunction in acute lung injury mice via improvement of mitochondrial function and autophagy. Int Immunopharmacol 2021; 101:108230. [PMID: 34655850 DOI: 10.1016/j.intimp.2021.108230] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 10/02/2021] [Accepted: 10/04/2021] [Indexed: 01/04/2023]
Abstract
Maintaining the pulmonary endothelial barrier that prevents the exudation of inflammatory factors and proteins is the key to the treatment of acute lung injury (ALI). Apelin-13 plays an important role in vascular diseases; however, the protective effects of Apelin-13 on ALI with pulmonary endothelial barrier are unknown. Therefore, mice and human umbilical vein endothelial cells (HUVECs) were injured by LPS following Apelin-13 administration. ALI mice showed reduced pulmonary vascular permeability, adhesion junction, mitochondrial function, mitochondrial biogenesis, and autophagy compared to the control group. Apelin-13 administration in ALI mice ameliorated LPS-induced lung injury, pulmonary vascular permeability, mitochondrial function, and promoted autophagic flux in mice and HUVECs. However, the effect of Apelin-13 was reduced after AMPK inhibition using Compound C. These data suggest that Apelin-13 ameliorates pulmonary vascular permeability in mice with ALI induced by LPS, which may be related to enhanced phosphorylation of AMPK to regulate mitochondrial function and autophagy.
Collapse
|
10
|
Huang J, Nong X, Chen Y, Zhang A, Chen L. 3-O-trans-caffeoyloleanolic acid improves acute lung injury via anti-inflammation and antioxidative stress-involved PI3K/AKT pathway. Chem Biol Drug Des 2021; 98:114-126. [PMID: 33961336 DOI: 10.1111/cbdd.13856] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Accepted: 01/28/2021] [Indexed: 12/20/2022]
Abstract
3-O-trans-caffeoyloleanolic acid (COA) is a pentacyclic triterpenoid compound, with significant anti-inflammatory effects. In this study, we report the protective effects of COA on lipopolysaccharide (LPS)-induced acute lung injury (ALI) and explored its mechanism of action. LPS was used to construct in vivo mouse ALI models to observe the effects of COA pretreatment on lung pathology, inflammation, and oxidative stress. In vitro, mouse alveolar macrophages MH-S cells were cultured and stimulated with LPS to investigate the effects of COA pretreatment on inflammation and oxidative stress. Western blotting was used to investigate the expression of iNOS, TLR4, p-p65, p-AKT, and p-PI3K from in vivo and in vitro samples. The results showed that COA significantly improved lung injury, inhibited neutrophil infiltration, prevented macrophage infiltration, inhibited the release of inflammatory factors, reduced oxidative stress, and down-regulated the expression of iNOS, TLR4, p-p65, p-AKT, and p-PI3K in ALI mice caused by LPS. In vitro, COA inhibited the release of inflammatory factors, reduced oxidative stress, and down-regulated the expression of iNOS, TLR4, p-p65, p-AKT, and p-PI3K in MH-S cells stimulated with LPS. Of interest, the protective effects of COA were significantly attenuated in MH-S cells pretreated with the PI3K phosphopeptide activator 740Y-P with no effect on TLR4 expression observed. Taken together, these findings confirm the protective effects of COA on ALI. We further demonstrate that the anti-inflammation and antioxidant effects of COA are mediated through its effects on PI3K/AKT and potentially TLR4.
Collapse
Affiliation(s)
- Jianhua Huang
- Department of Respiratory and Critical Care Medicine, Jiangxi Chest (Third people) Hospital, Nanchang, China
| | - Xueping Nong
- Pathology Department, Jiangxi Chest (Third people) Hospital, Nanchang, China
| | - Yanling Chen
- Department of Respiratory and Critical Care Medicine, Jiangxi Chest (Third people) Hospital, Nanchang, China
| | - Aimei Zhang
- Department of Respiratory and Critical Care Medicine, Jiangxi Chest (Third people) Hospital, Nanchang, China
| | - Lerong Chen
- Department of Respiratory and Critical Care Medicine, Jiangxi Chest (Third people) Hospital, Nanchang, China
| |
Collapse
|
11
|
Abstract
Extracellular vesicles (EVs) are lipid bilayer-enclosed extracellular particles carrying rich cargo such as proteins, lipids, and microRNAs with distinct characteristics of their parental cells. EVs are emerging as an important form of cellular communication with the ability to selectively deliver a kit of directional instructions to nearby or distant cells to modulate their functions and phenotypes. According to their biogenesis, EVs can be divided into two groups: those of endocytic origin are called exosomes and those derived from outward budding of the plasma membrane are called microvesicles (also known as ectosomes or microparticles). Under physiological conditions, EVs are actively involved in maintenance of pulmonary hemostasis. However, EVs can contribute to the pathogenesis of diseases such as chronic obstructive pulmonary disease, asthma, acute lung injury/acute respiratory distress syndrome, interstitial lung disease, and pulmonary arterial hypertension. EVs, especially those derived from mesenchymal/stromal stem cells, can also be beneficial and can curb the development of lung diseases. Novel technologies are continuously being developed to minimize the undesirable effects of EVs and also to engineer EVs so that they may have beneficial effects and can be used as therapeutic agents in lung diseases. © 2021 American Physiological Society. Compr Physiol 11:1351-1369, 2021.
Collapse
Affiliation(s)
- Yuansheng Gao
- Department of Physiology and Pathophysiology, Peking University Health Science Center, Beijing, China
| | - J Usha Raj
- Department of Pediatrics, College of Medicine at Chicago, University of Illinois, Chicago, Illinois, USA
| |
Collapse
|
12
|
Soni S, Garner JL, O'Dea KP, Koh M, Finney L, Tirlapur N, Srikanthan K, Tenda ED, Aboelhassan AM, Singh S, Wilson MR, Wedzicha JA, Kemp SV, Usmani OS, Shah PL, Takata M. Intra-alveolar neutrophil-derived microvesicles are associated with disease severity in COPD. Am J Physiol Lung Cell Mol Physiol 2020; 320:L73-L83. [PMID: 33146567 DOI: 10.1152/ajplung.00099.2020] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Despite advances in the pathophysiology of chronic obstructive pulmonary disease (COPD), there is a distinct lack of biochemical markers to aid clinical management. Microvesicles (MVs) have been implicated in the pathophysiology of inflammatory diseases including COPD, but their association to COPD disease severity remains unknown. We analyzed different MV populations in plasma and bronchoalveolar lavage fluid (BALF) taken from 62 patients with mild to very severe COPD (51% male; mean age: 65.9 yr). These patients underwent comprehensive clinical evaluation (symptom scores, lung function, and exercise testing), and the capacity of MVs to be clinical markers of disease severity was assessed. We successfully identified various MV subtype populations within BALF [leukocyte, polymorphonuclear leukocyte (PMN; i.e., neutrophil), monocyte, epithelial, and platelet MVs] and plasma (leukocyte, PMN, monocyte, and endothelial MVs) and compared each MV population to disease severity. BALF neutrophil MVs were the only population to significantly correlate with the clinical evaluation scores including forced expiratory volume in 1 s, modified Medical Research Council dyspnea score, 6-min walk test, hyperinflation, and gas transfer. BALF neutrophil MVs, but not neutrophil cell numbers, also strongly correlated with BODE index. We have undertaken, for the first time, a comprehensive evaluation of MV profiles within BALF/plasma of COPD patients. We demonstrate that BALF levels of neutrophil-derived MVs are unique in correlating with a number of key functional and clinically relevant disease severity indexes. Our results show the potential of BALF neutrophil MVs for a COPD biomarker that tightly links a key pathophysiological mechanism of COPD (intra-alveolar neutrophil activation) with clinical severity/outcome.
Collapse
Affiliation(s)
- Sanooj Soni
- Division of Anaesthetics, Pain Medicine and Intensive Care, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, United Kingdom
| | - Justin L Garner
- Royal Brompton Hospital, Respiratory Medicine, London, United Kingdom.,Chelsea and Westminster Hospital, Respiratory Medicine, London, United Kingdom.,National Heart and Lung Institute, Imperial College London, Royal Brompton Hospital, London, United Kingdom
| | - Kieran P O'Dea
- Division of Anaesthetics, Pain Medicine and Intensive Care, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, United Kingdom
| | - Marissa Koh
- Division of Anaesthetics, Pain Medicine and Intensive Care, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, United Kingdom
| | - Lydia Finney
- Royal Brompton Hospital, Respiratory Medicine, London, United Kingdom.,National Heart and Lung Institute, Imperial College London, Royal Brompton Hospital, London, United Kingdom
| | - Nikhil Tirlapur
- Division of Anaesthetics, Pain Medicine and Intensive Care, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, United Kingdom
| | - Karthi Srikanthan
- Royal Brompton Hospital, Respiratory Medicine, London, United Kingdom.,Chelsea and Westminster Hospital, Respiratory Medicine, London, United Kingdom.,National Heart and Lung Institute, Imperial College London, Royal Brompton Hospital, London, United Kingdom
| | - Eric D Tenda
- Royal Brompton Hospital, Respiratory Medicine, London, United Kingdom.,Chelsea and Westminster Hospital, Respiratory Medicine, London, United Kingdom.,National Heart and Lung Institute, Imperial College London, Royal Brompton Hospital, London, United Kingdom
| | - Arafa M Aboelhassan
- Royal Brompton Hospital, Respiratory Medicine, London, United Kingdom.,Chelsea and Westminster Hospital, Respiratory Medicine, London, United Kingdom
| | - Suveer Singh
- Royal Brompton Hospital, Respiratory Medicine, London, United Kingdom.,Chelsea and Westminster Hospital, Respiratory Medicine, London, United Kingdom.,National Heart and Lung Institute, Imperial College London, Royal Brompton Hospital, London, United Kingdom
| | - Michael R Wilson
- Division of Anaesthetics, Pain Medicine and Intensive Care, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, United Kingdom
| | - Jadwiga A Wedzicha
- Royal Brompton Hospital, Respiratory Medicine, London, United Kingdom.,National Heart and Lung Institute, Imperial College London, Royal Brompton Hospital, London, United Kingdom
| | - Samuel V Kemp
- Royal Brompton Hospital, Respiratory Medicine, London, United Kingdom
| | - Omar S Usmani
- Royal Brompton Hospital, Respiratory Medicine, London, United Kingdom.,National Heart and Lung Institute, Imperial College London, Royal Brompton Hospital, London, United Kingdom
| | - Pallav L Shah
- Royal Brompton Hospital, Respiratory Medicine, London, United Kingdom.,Chelsea and Westminster Hospital, Respiratory Medicine, London, United Kingdom.,National Heart and Lung Institute, Imperial College London, Royal Brompton Hospital, London, United Kingdom
| | - Masao Takata
- Division of Anaesthetics, Pain Medicine and Intensive Care, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, United Kingdom
| |
Collapse
|
13
|
Mahida RY, Matsumoto S, Matthay MA. Extracellular Vesicles: A New Frontier for Research in Acute Respiratory Distress Syndrome. Am J Respir Cell Mol Biol 2020; 63:15-24. [PMID: 32109144 DOI: 10.1165/rcmb.2019-0447tr] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Recent research on extracellular vesicles (EVs) has provided new insights into pathogenesis and potential therapeutic options for acute respiratory distress syndrome (ARDS). EVs are membrane-bound anuclear structures that carry important intercellular communication mechanisms, allowing targeted transfer of diverse biologic cargo, including protein, mRNA, and microRNA, among several different cell types. In this review, we discuss the important role EVs play in both inducing and attenuating inflammatory lung injury in ARDS as well as in sepsis, the most important clinical cause of ARDS. We discuss the translational challenges that need to be overcome before EVs can also be used as prognostic biomarkers in patients with ARDS and sepsis. We also consider how EVs may provide a platform for novel therapeutics in ARDS.
Collapse
Affiliation(s)
- Rahul Y Mahida
- Cardiovascular Research Institute.,Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom; and
| | - Shotaro Matsumoto
- Cardiovascular Research Institute.,Department of Intensive Care Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Michael A Matthay
- Cardiovascular Research Institute.,Department of Medicine, and.,Department of Anesthesia, University of California San Francisco, San Francisco, California
| |
Collapse
|
14
|
Lee TJ, Yuan X, Kerr K, Yoo JY, Kim DH, Kaur B, Eltzschig HK. Strategies to Modulate MicroRNA Functions for the Treatment of Cancer or Organ Injury. Pharmacol Rev 2020; 72:639-667. [PMID: 32554488 DOI: 10.1124/pr.119.019026] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Cancer and organ injury-such as that occurring in the perioperative period, including acute lung injury, myocardial infarction, and acute gut injury-are among the leading causes of death in the United States and impose a significant impact on quality of life. MicroRNAs (miRNAs) have been studied extensively during the last two decades for their role as regulators of gene expression, their translational application as diagnostic markers, and their potential as therapeutic targets for disease treatment. Despite promising preclinical outcomes implicating miRNA targets in disease treatment, only a few miRNAs have reached clinical trials. This likely relates to difficulties in the delivery of miRNA drugs to their targets to achieve efficient inhibition or overexpression. Therefore, understanding how to efficiently deliver miRNAs into diseased tissues and specific cell types in patients is critical. This review summarizes current knowledge on various approaches to deliver therapeutic miRNAs or miRNA inhibitors and highlights current progress in miRNA-based disease therapy that has reached clinical trials. Based on ongoing advances in miRNA delivery, we believe that additional therapeutic approaches to modulate miRNA function will soon enter routine medical treatment of human disease, particularly for cancer or perioperative organ injury. SIGNIFICANCE STATEMENT: MicroRNAs have been studied extensively during the last two decades in cancer and organ injury, including acute lung injury, myocardial infarction, and acute gut injury, for their regulation of gene expression, application as diagnostic markers, and therapeutic potentials. In this review, we specifically emphasize the pros and cons of different delivery approaches to modulate microRNAs, as well as the most recent exciting progress in the field of therapeutic targeting of microRNAs for disease treatment in patients.
Collapse
Affiliation(s)
- Tae Jin Lee
- Departments of Neurosurgery (T.J.L., K.K., J.Y.Y., D.H.K., B.K.) and Anesthesiology (X.Y., H.K.E.), McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas
| | - Xiaoyi Yuan
- Departments of Neurosurgery (T.J.L., K.K., J.Y.Y., D.H.K., B.K.) and Anesthesiology (X.Y., H.K.E.), McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas
| | - Keith Kerr
- Departments of Neurosurgery (T.J.L., K.K., J.Y.Y., D.H.K., B.K.) and Anesthesiology (X.Y., H.K.E.), McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas
| | - Ji Young Yoo
- Departments of Neurosurgery (T.J.L., K.K., J.Y.Y., D.H.K., B.K.) and Anesthesiology (X.Y., H.K.E.), McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas
| | - Dong H Kim
- Departments of Neurosurgery (T.J.L., K.K., J.Y.Y., D.H.K., B.K.) and Anesthesiology (X.Y., H.K.E.), McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas
| | - Balveen Kaur
- Departments of Neurosurgery (T.J.L., K.K., J.Y.Y., D.H.K., B.K.) and Anesthesiology (X.Y., H.K.E.), McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas
| | - Holger K Eltzschig
- Departments of Neurosurgery (T.J.L., K.K., J.Y.Y., D.H.K., B.K.) and Anesthesiology (X.Y., H.K.E.), McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas
| |
Collapse
|
15
|
Qiu Q, Dan X, Yang C, Hardy P, Yang Z, Liu G, Xiong W. Increased airway T lymphocyte microparticles in chronic obstructive pulmonary disease induces airway epithelial injury. Life Sci 2020; 261:118357. [PMID: 32861794 DOI: 10.1016/j.lfs.2020.118357] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 08/25/2020] [Indexed: 01/06/2023]
Abstract
In our previous study, T lymphocyte microparticles (TLMPs) originated from CEM T lymphoblast-like cell line induced enhanced production of inflammation-associated cytokines and apoptosis in human bronchial epithelial cells (HBEs). To measure TLMP subpopulations in bronchoalveolar lavage fluids (BALF) from patients with chronic obstructive pulmonary disease (COPD), and to explore the effects of MPs derived from different T cell subpopulations on airway epithelium, this study was conducted. A hospital-based case-control study including 47 COPD patients and 28 healthy volunteers was performed. The cellular origins of MPs from airway in COPD and controls were evaluated using flow cytometry. CD4+ or CD8+ TLMPs were isolated by MACS to investigate their effects on HBEs in vitro. The numbers of MPs derived from T lymphocytes in BALF as well as these subpopulations (CD4+ and CD8+ T lymphocytes) were significantly upregulated in COPD patients compared with healthy volunteers. However, there was no significant difference between stable COPD and patients with acute exacerbation. Additionally, significant correlation between CD4+ and CD8+ TLMPs was observed, however neither type nor total level of TLMPs was correlated with any base parameter. Furthermore, isolated CD4+ and CD8+ TLMPs reduced cell viability and induced significant production of inflammatory cytokines including interleukin (IL)-6, monocyte chemoattractant protein (MCP)-1, MCP-2, matrix metallopeptidase (MMP)-9 and tumor necrosis factor-alpha (TNF-α) in HBEs, while the levels of anti-inflammatory cytokine IL-10 were decreased. TLMPs in the airways, as putative biomarkers, may lead to airway epithelial injury and inflammation and serve essential roles in the pathophysiology of COPD.
Collapse
Affiliation(s)
- Qian Qiu
- Department of Geriatrics, Southwest Hospital, Army Medical University, Chongqing, China; Research Institute of Tuberculosis, Chongqing Public Health Medical Center, Chongqing, China
| | - Xiaoping Dan
- Department of Geriatrics, Southwest Hospital, Army Medical University, Chongqing, China
| | - Chun Yang
- Department of Pediatrics and Pharmacology, Research Center of CHU Sainte-Justine, University of Montreal, Montreal, Quebec, Canada
| | - Pierre Hardy
- Department of Pediatrics and Pharmacology, Research Center of CHU Sainte-Justine, University of Montreal, Montreal, Quebec, Canada
| | - Zaixing Yang
- Department of Geriatrics, Southwest Hospital, Army Medical University, Chongqing, China
| | - Guoxiang Liu
- Department of Respiratory Medicine, Southwest Hospital, Army Medical University, Chongqing, China.
| | - Wei Xiong
- Department of Geriatrics, Southwest Hospital, Army Medical University, Chongqing, China
| |
Collapse
|
16
|
Sun DW, Zhang D, Tian RH, Li Y, Wang YS, Cao J, Tang Y, Zhang N, Zan T, Gao L, Huang YZ, Cui CL, Wang DX, Zheng Y, Lv GY. The underlying changes and predicting role of peripheral blood inflammatory cells in severe COVID-19 patients: A sentinel? Clin Chim Acta 2020; 508:122-129. [PMID: 32417210 PMCID: PMC7224669 DOI: 10.1016/j.cca.2020.05.027] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 04/22/2020] [Accepted: 05/12/2020] [Indexed: 12/24/2022]
Abstract
Lymphopenia and eosinopenia might be predictors of disease severity in COVID-19. Lymphopenia and eosinopenia might be predictors of disease progression in COVID-19. Clinical classification-severe type is the dependently risk factor for alteration of PBICs. PBICs might be a sentinel, and it deserves attention during COVID-19 management.
Background The underlying changes of peripheral blood inflammatory cells (PBICs) in COVID-19 patients are little known. Moreover, the risk factors for the underlying changes of PBICs and their predicting role in severe COVID-19 patients remain uncertain. Material and methods This retrospective study including two cohorts: the main cohort enrolling 45 patients of severe type serving as study group, and the secondary cohort enrolling 12 patients of no-severe type serving as control group. The PBICs analysis was based on blood routine and lymphocyte subsets. The inflammatory cell levels were compared among patients according to clinical classifications, disease-associated phases, as well as one-month outcomes. Results Compared with patients of non-severe type, the patients of severe type suffered from significantly decreased counts of lymphocytes, eosinophils, basophils, but increased counts of neutrophils. These PBICs alterations got improved in recovery phase, but persisted or got worse in aggravated phase. Compared with patients in discharged group, the patients in un-discharged/died group suffered from decreased counts of total T lymphocytes, CD4 + T lymphocytes, CD8 + T lymphocytes, as well as NK cells at 2 weeks after treatment. Clinical classification-critically severe was the independently risk factor for lymphopenia (OR = 7.701, 95%CI:1.265–46.893, P = 0.027), eosinopenia (OR = 5.595, 95%CI:1.008–31.054, P = 0.049), and worse one-month outcome (OR = 8.984; 95%CI:1.021–79.061, P = 0.048). Conclusion Lymphopenia and eosinopenia may serve as predictors of disease severity and disease progression in COVID-19 patients, and enhancing the cellular immunity may contribute to COVID-19 treatment. Thus, PBICs might become a sentinel of COVID-19, and it deserves attention during COVID-19 treatment.
Collapse
Affiliation(s)
- Da-Wei Sun
- Department of Hepatobiliary and Pancreatic Surgery, The First Hospital of Jilin University, Jilin University, Changchun 130021, Jilin, China.
| | - Dong Zhang
- Department of Intensive Care Unit, The First Hospital of Jilin University, Jilin University, Changchun 130021, Jilin, China.
| | - Run-Hui Tian
- Department of Psychology, The First Hospital of Jilin University, Jilin University, Changchun 130021, Jilin, China.
| | - Yang Li
- Department of Thoracic Surgery, The First Hospital of Jilin University, Jilin University, Changchun 130021, Jilin, China.
| | - Yu-Shi Wang
- Department of Cardiology, The First Hospital of Jilin University, Jilin University, Changchun 130021, Jilin, China
| | - Jie Cao
- Department of Neurology, The First Hospital of Jilin University, Jilin University, Changchun 130021, Jilin, China.
| | - Ying Tang
- Department of Respiration, The First Hospital of Jilin University, Jilin University, Changchun 130021, Jilin, China.
| | - Nan Zhang
- Department of Gastroenterology, The First Hospital of Jilin University, Jilin University, Changchun 130021, Jilin, China.
| | - Tao Zan
- Department of Intensive Care Unit, The First Hospital of Jilin University, Jilin University, Changchun 130021, Jilin, China.
| | - Lan Gao
- Department of Neurology, The First Hospital of Jilin University, Jilin University, Changchun 130021, Jilin, China.
| | - Yan-Zhu Huang
- Department of Neurology, Tongji Hospital Affiliated to Huazhong University of Science and Technology, Wuhan 430030, China.
| | - Chang-Lei Cui
- Department of Anesthesiology, The First Hospital of Jilin University, Jilin University, Changchun 130021, Jilin, China.
| | - Dong-Xuan Wang
- Department of Ultrasound, The First Hospital of Jilin University, Jilin University, Changchun 130021, Jilin, China.
| | - Yang Zheng
- Department of Cardiology, The First Hospital of Jilin University, Jilin University, Changchun 130021, Jilin, China.
| | - Guo-Yue Lv
- Department of Hepatobiliary and Pancreatic Surgery, The First Hospital of Jilin University, Jilin University, Changchun 130021, Jilin, China.
| |
Collapse
|
17
|
Cata JP, Owusu-Agyemang P, Kapoor R, Lonnqvist PA. Impact of Anesthetics, Analgesics, and Perioperative Blood Transfusion in Pediatric Cancer Patients: A Comprehensive Review of the Literature. Anesth Analg 2019; 129:1653-1665. [PMID: 31743187 DOI: 10.1213/ane.0000000000004314] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Cancer is the leading cause of death by disease in developed countries. Children and adolescents with cancer need surgical interventions (ie, biopsy or major surgery) to diagnose, treat, or palliate their malignancies. Surgery is a period of high vulnerability because it stimulates the release of inflammatory mediators, catecholamines, and angiogenesis activators, which coincides with a period of immunosuppression. Thus, during and after surgery, dormant tumors or micrometastasis (ie, minimal residual disease) can grow and become clinically relevant metastasis. Anesthetics (ie, volatile agents, dexmedetomidine, and ketamine) and analgesics (ie, opioids) may also contribute to the growth of minimal residual disease or disease progression. For instance, volatile anesthetics have been implicated in immunosuppression and direct stimulation of cancer cell survival and proliferation. Contrarily, propofol has shown in vitro anticancer effects. In addition, perioperative blood transfusions are not uncommon in children undergoing cancer surgery. In adults, an association between perioperative blood transfusions and cancer progression has been described for some malignancies. Transfusion-related immunomodulation is one of the mechanisms by which blood transfusions can promote cancer progression. Other mechanisms include inflammation and the infusion of growth factors. In the present review, we discuss different aspects of tumorigenesis, metastasis, angiogenesis, the immune system, and the current studies about the impact of anesthetics, analgesics, and perioperative blood transfusions on pediatric cancer progression.
Collapse
Affiliation(s)
- Juan P Cata
- From the Department of Anesthesiology and Perioperative Medicine, University of Texas MD Anderson Cancer Center, Houston, Texas
- Anesthesiology and Surgical Oncology Research Group, Houston, Texas
| | - Pascal Owusu-Agyemang
- From the Department of Anesthesiology and Perioperative Medicine, University of Texas MD Anderson Cancer Center, Houston, Texas
- Anesthesiology and Surgical Oncology Research Group, Houston, Texas
| | - Ravish Kapoor
- From the Department of Anesthesiology and Perioperative Medicine, University of Texas MD Anderson Cancer Center, Houston, Texas
- Anesthesiology and Surgical Oncology Research Group, Houston, Texas
| | - Per-Arne Lonnqvist
- Department of Physiology & Pharmacology, Karolinska Institutet, Stockholm, Sweden
| |
Collapse
|
18
|
Qiu Q, Yang Z, Cao F, Yang C, Hardy P, Yan X, Yang S, Xiong W. Activation of NLRP3 inflammasome by lymphocytic microparticles via TLR4 pathway contributes to airway inflammation. Exp Cell Res 2019; 386:111737. [PMID: 31759058 DOI: 10.1016/j.yexcr.2019.111737] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 11/13/2019] [Accepted: 11/16/2019] [Indexed: 01/23/2023]
Abstract
The presence of elevated T lymphocytic microparticles (TLMPs) during respiratory illness is associated with airway and lung inflammation and epithelial injuries. Although inflammasome and IL-1β signaling are crucial in airway inflammation, little was known about their regulatory mechanism. We hypothesized that TLMPs trigger inflammasome activation and IL-1β production in bronchial and alveolar epithelial cells to induce airway and lung inflammation. In this study, TLMPs induced IL-1β and IL-18 secretion through NLRP3 inflammasome activation and upregulated TLR4 mRNA and protein expression in alveolar (A549) and human airway epithelial (16HBE) cells. Pretreatment with CLI-095, a specific inhibitor of TLR4 signaling, dramatically diminished the TLMP-induced release of IL-1β and IL-18 by inhibiting the formation of NLRP3/ASC/pro-caspase-1 inflammasome in a dose-dependent manner. The TLMP-induced autophagy inhibition in epithelial cells was dependent on the PI3K/Akt signaling pathway, which significantly increased NLRP3 expression and enhanced TLMP-induced inflammation. TLR4, IL-1β, and IL-18 proteins harbored in TLMPs were nonessential for the pro-inflammatory effect. In conclusion, TLMPs induce bronchial and alveolar epithelial cell secretion of IL-1β and IL-18 cytokines by activating the TLR4 and PI3K/Akt signaling pathways and inhibiting autophagy. These effects lead to NLRP3 inflammasome formation and accumulation. TLMPs may be regarded as deleterious markers of airway and lung damage in respiratory diseases.
Collapse
Affiliation(s)
- Qian Qiu
- Department of Geriatrics, First Affiliated Hospital, Army Medical University, Chongqing, 400038, China; Research Institute of Tuberculosis, Chongqing Public Health Medical Center, Chongqing, 400036, China
| | - Zaixing Yang
- Department of Geriatrics, First Affiliated Hospital, Army Medical University, Chongqing, 400038, China
| | - Fuli Cao
- Department of Geriatrics, First Affiliated Hospital, Army Medical University, Chongqing, 400038, China
| | - Chun Yang
- Departments of Pediatrics, Physiology and Pharmacology, University of Montreal, Montreal, QC, Canada
| | - Pierre Hardy
- Departments of Pediatrics, Physiology and Pharmacology, University of Montreal, Montreal, QC, Canada
| | - Xiaofeng Yan
- Research Institute of Tuberculosis, Chongqing Public Health Medical Center, Chongqing, 400036, China
| | - Song Yang
- Department of Geriatrics, First Affiliated Hospital, Army Medical University, Chongqing, 400038, China
| | - Wei Xiong
- Department of Geriatrics, First Affiliated Hospital, Army Medical University, Chongqing, 400038, China.
| |
Collapse
|
19
|
Sunil VR, Vayas KN, Abramova EV, Rancourt R, Cervelli JA, Malaviya R, Goedken M, Venosa A, Gow AJ, Laskin JD, Laskin DL. Lung injury, oxidative stress and fibrosis in mice following exposure to nitrogen mustard. Toxicol Appl Pharmacol 2019; 387:114798. [PMID: 31678244 DOI: 10.1016/j.taap.2019.114798] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 10/22/2019] [Accepted: 10/27/2019] [Indexed: 02/06/2023]
Abstract
Nitrogen mustard (NM) is a cytotoxic vesicant known to cause acute lung injury which progresses to fibrosis. Herein, we developed a murine model of NM-induced pulmonary toxicity with the goal of assessing inflammatory mechanisms of injury. C57BL/6J mice were euthanized 1-28 d following intratracheal exposure to NM (0.08 mg/kg) or PBS control. NM caused progressive alveolar epithelial thickening, perivascular inflammation, bronchiolar epithelial hyperplasia, interstitial fibroplasia and fibrosis, peaking 14 d post exposure. Enlarged foamy macrophages were also observed in the lung 14 d post NM, along with increased numbers of microparticles in bronchoalveolar lavage fluid (BAL). Following NM exposure, rapid and prolonged increases in BAL cells, protein, total phospholipids and surfactant protein (SP)-D were also detected. Flow cytometric analysis showed that CD11b+Ly6G-F4/80+Ly6Chi proinflammatory macrophages accumulated in the lung after NM, peaking at 3 d. This was associated with macrophage expression of HMGB1 and TNFα in histologic sections. CD11b+Ly6G-F4/80+Ly6Clo anti-inflammatory/pro-fibrotic macrophages also increased in the lung after NM peaking at 14 d, a time coordinate with increases in TGFβ expression and fibrosis. NM exposure also resulted in alterations in pulmonary mechanics including increases in tissue elastance and decreases in compliance and static compliance, most prominently at 14 d. These findings demonstrate that NM induces structural and inflammatory changes in the lung that correlate with aberrations in pulmonary function. This mouse model will be useful for mechanistic studies of mustard lung injury and for assessing potential countermeasures.
Collapse
Affiliation(s)
- Vasanthi R Sunil
- Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ 08854, United States of America.
| | - Kinal N Vayas
- Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ 08854, United States of America.
| | - Elena V Abramova
- Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ 08854, United States of America.
| | - Raymond Rancourt
- Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ 08854, United States of America.
| | - Jessica A Cervelli
- Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ 08854, United States of America.
| | - Rama Malaviya
- Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ 08854, United States of America.
| | - Michael Goedken
- Research Pathology Services, Rutgers University, Piscataway, NJ 08854;, United States of America.
| | - Alessandro Venosa
- Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ 08854, United States of America
| | - Andrew J Gow
- Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ 08854, United States of America.
| | - Jeffrey D Laskin
- School of Public Health, Rutgers University, Piscataway, NJ 08854, United States of America.
| | - Debra L Laskin
- Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ 08854, United States of America.
| |
Collapse
|
20
|
Huang X, Zhu J, Jiang Y, Xu C, Lv Q, Yu D, Shi K, Ruan Z, Wang Y. SU5416 attenuated lipopolysaccharide-induced acute lung injury in mice by modulating properties of vascular endothelial cells. Drug Des Devel Ther 2019; 13:1763-1772. [PMID: 31213766 PMCID: PMC6536715 DOI: 10.2147/dddt.s188858] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 03/12/2019] [Indexed: 12/20/2022]
Abstract
Background and aim: A potent and selective vascular endothelial growth factor receptor (VEGFR) inhibitor SU5416, has been developed for the treatment of solid human tumors. The binding of VEGF to VEGFR plays a crucial role in the pathophysiology of respiratory disorders. However, the impact of SU5416 on lipopolysaccharide (LPS)-induced acute lung injury (ALI) remains unclear. Thus, this study aimed to illuminate the biofunction of SU5416 in the mouse model of ALI. Methods: Wild-type (WT) and toll-like receptor 4 (TLR4)-deficient (TLR4−/-) C57BL/6 mice were used to establish LPS-induced ALI model. The primary pulmonary microvascular endothelial cell (PMVEC) was extracted for detection of endothelial barrier function. Results: LPS significantly increased the number of inflammatory cells and inflammatory cytokines in bronchoalveolar lavage fluid (BALF). In addition, LPS increased alveolar epithelial cells injury, inflammation infiltration and vascular permeability of PMVEC in WT and TLR4−/- mice. Western blotting experiment indicated VEGF/VEGFR and TLR4/NF-κB pathways were involved in the progression of LPS-stimulated ALI. Consistent with previous research, dexamethasone treatment appeared to be an effective therapeutic for mice with ALI. Moreover, treatment with SU5416 dramatically attenuated LPS-induced immune responses in mice lung tissues via inhibiting VEGF/VEGFR and TLR4/NF-κB pathways. Finally, SU5416 also decreased vascular permeability of PMVEC in vitro. Conclusion: SU5416 ameliorated alveolar epithelial cells injury and histopathological changes in mice lung via inhibiting VEGF/VEGFR and TLR4/NF-κB signaling pathways. We also confirmed that SU5416 could restrain vascular permeability in PMVEC through improving the integrity of endothelial cell. These findings suggested that SU5416 may serve as a potential agent for the treatment of patients with ALI.
Collapse
Affiliation(s)
- Xuqing Huang
- Department of Respiratory Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang, People's Republic of China
| | - Junqi Zhu
- Department of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, People's Republic of China
| | - Yuyue Jiang
- Department of Respiratory Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang, People's Republic of China
| | - Changqing Xu
- Department of Respiratory Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang, People's Republic of China
| | - Qun Lv
- Department of Respiratory Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang, People's Republic of China
| | - Dongwei Yu
- Department of Respiratory Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang, People's Republic of China
| | - Kai Shi
- Department of Respiratory Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang, People's Republic of China
| | - Zhaoyang Ruan
- Department of Respiratory Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang, People's Republic of China
| | - Yan Wang
- Department of Respiratory Medicine, Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang, People's Republic of China
| |
Collapse
|
21
|
Middleton EA, Rondina MT, Schwertz H, Zimmerman GA. Amicus or Adversary Revisited: Platelets in Acute Lung Injury and Acute Respiratory Distress Syndrome. Am J Respir Cell Mol Biol 2019; 59:18-35. [PMID: 29553813 DOI: 10.1165/rcmb.2017-0420tr] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Platelets are essential cellular effectors of hemostasis and contribute to disease as circulating effectors of pathologic thrombosis. These are their most widely known biologic activities. Nevertheless, recent observations demonstrate that platelets have a much more intricate repertoire beyond these traditional functions and that they are specialized for contributions to vascular barrier integrity, organ repair, antimicrobial host defense, inflammation, and activities across the immune continuum. Paradoxically, on the basis of clinical investigations and animal models of disease, some of these newly discovered activities of platelets appear to contribute to tissue injury. Studies in the last decade indicate unique interactions of platelets and their precursor, the megakaryocyte, in the lung and implicate platelets as essential effectors in experimental acute lung injury and clinical acute respiratory distress syndrome. Additional discoveries derived from evolving work will be required to precisely define the contributions of platelets to complex subphenotypes of acute lung injury and to determine if these remarkable and versatile blood cells are therapeutic targets in acute respiratory distress syndrome.
Collapse
Affiliation(s)
- Elizabeth A Middleton
- 1 Division of Pulmonary and Critical Care Medicine, and.,2 Program in Molecular Medicine, University of Utah School of Medicine, Salt Lake City, Utah
| | - Matthew T Rondina
- 3 Division of General Internal Medicine, Department of Internal Medicine.,2 Program in Molecular Medicine, University of Utah School of Medicine, Salt Lake City, Utah
| | - Hansjorg Schwertz
- 4 Division of Vascular Surgery, Department of Surgery, and.,2 Program in Molecular Medicine, University of Utah School of Medicine, Salt Lake City, Utah
| | - Guy A Zimmerman
- 1 Division of Pulmonary and Critical Care Medicine, and.,2 Program in Molecular Medicine, University of Utah School of Medicine, Salt Lake City, Utah
| |
Collapse
|
22
|
Yang Y, Yang F, Yu X, Wang B, Yang Y, Zhou X, Cheng R, Xia S, Zhou X. miR-16 inhibits NLRP3 inflammasome activation by directly targeting TLR4 in acute lung injury. Biomed Pharmacother 2019; 112:108664. [PMID: 30784935 DOI: 10.1016/j.biopha.2019.108664] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 02/03/2019] [Accepted: 02/04/2019] [Indexed: 12/12/2022] Open
Abstract
Acute lung injury (ALI) is the leading cause of human death, and it is widely accepted that the runaway inflammation is an important risk for the development of ALI. In the present study, we aimed to investigate the effect of miR-16 on lipopolysaccharide-induced acute lung injury in mice, especially focusing on Toll-like receptor 4 (TLR4) and NF-kB signaling pathway as well as NOD-like receptor protein 3 (NLRP3) inflammasome activation. We established in vivo and in vitro model of ALI using LPS and demonstrated that miR-16 expression was down-regulated in lung tissue as well as A549 cells after 8 h of LPS treatment. Furthermore, when miR-16 levels in lung tissues were up-regulated by miR-16 agomir, it was confirmed that the mRNA and protein levels of NF-κB, NLRP3 inflammasome, and inflammatory factors were decreased by the miR-16 by directly targeting TLR4. We also treated A549 cells with miR-16 mimics and anti-miR-16 to confirm the results. Overall, our experiments showed that miR-16 protects against acute lung injury in mice by regulating the TLR4/ NF-κB pathway and attenuating inflammatory response. This work suggests a potential novel therapeutic approach to combat ALI.
Collapse
Affiliation(s)
- Yuan Yang
- Neonatal Medical Center, Children's Hospital of Nanjing Medical University, Nanjing 210008, Jiangsu Province, China
| | - Feng Yang
- Department of Pediatrics, The Central Hospital of Enshi Autonomous Prefecture, Enshi City 445000, Hubei Province, China
| | - Xinqiao Yu
- Department of Pediatrics, The Central Hospital of Enshi Autonomous Prefecture, Enshi City 445000, Hubei Province, China
| | - Beibei Wang
- Neonatal Medical Center, Children's Hospital of Nanjing Medical University, Nanjing 210008, Jiangsu Province, China
| | - Yang Yang
- Neonatal Medical Center, Children's Hospital of Nanjing Medical University, Nanjing 210008, Jiangsu Province, China
| | - Xiaoyu Zhou
- Neonatal Medical Center, Children's Hospital of Nanjing Medical University, Nanjing 210008, Jiangsu Province, China
| | - Rui Cheng
- Neonatal Medical Center, Children's Hospital of Nanjing Medical University, Nanjing 210008, Jiangsu Province, China
| | - Shiwen Xia
- Department of Neonatology, Maternal and Child Health Hospital of Hubei Province, Wuhan 430070, Hubei Province, China.
| | - Xiaoguang Zhou
- Neonatal Medical Center, Children's Hospital of Nanjing Medical University, Nanjing 210008, Jiangsu Province, China.
| |
Collapse
|
23
|
Dai W, Ge X, Xu T, Lu C, Zhou W, Sun D, Gong Y, Dai Y. Two indole-2-carboxamide derivatives attenuate lipopolysaccharide-induced acute lung injury by inhibiting inflammatory response. Can J Physiol Pharmacol 2018; 96:1261-1267. [PMID: 30326195 DOI: 10.1139/cjpp-2018-0027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Acute lung injury (ALI) is the leading cause of mortality in the intensive care unit. Currently, there is no effective pharmacological treatment for ALI. In our previous study, we reported that Lg25 and Lg26, two indole-2-carboxamide derivatives, inhibited the lipopolysaccharide (LPS)-induced inflammatory cytokines in vitro and attenuated LPS-induced sepsis in vivo. In the present study, we confirmed data from previous studies that LPS significantly induced pulmonary edema and pathological changes in lung tissue, increased protein concentration and number of inflammatory cells in bronchoalveolar lavage fluids (BALF), and increased inflammatory cytokine TNF-α expression in serum and BALF, pro-inflammatory genes expression, and macrophages infiltration in lung tissue. However, pretreatment with Lg25 and Lg26 significantly attenuated the LPS-induced changes in mice. Taken together, these data indicate that the newly discovered indole-2-carboxamide derivatives could be particularly useful in the treatment of inflammatory diseases such as ALI.
Collapse
Affiliation(s)
- Wei Dai
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.,The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Xiangting Ge
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.,The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Tingting Xu
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.,The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Chun Lu
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.,The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Wangfeng Zhou
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.,The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Dandan Sun
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.,The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yuqiang Gong
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.,The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yuanrong Dai
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.,The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| |
Collapse
|
24
|
Ju M, Liu B, He H, Gu Z, Liu Y, Su Y, Zhu D, Cang J, Luo Z. MicroRNA-27a alleviates LPS-induced acute lung injury in mice via inhibiting inflammation and apoptosis through modulating TLR4/MyD88/NF-κB pathway. Cell Cycle 2018; 17:2001-2018. [PMID: 30231673 DOI: 10.1080/15384101.2018.1509635] [Citation(s) in RCA: 164] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Acute lung injury (ALI) is a critical clinical condition with a high mortality rate, characterized with excessive uncontrolled inflammation and apoptosis. Recently, microRNAs (miRNAs) have been found to play crucial roles in the amelioration of various inflammation-induced diseases, including ALI. However, it remains unknown the biological function and regulatory mechanisms of miRNAs in the regulation of inflammation and apoptosis in ALI. The aim of this study is to identify and evaluate the potential role of miRNAs in ALI and reveal the underlying molecular mechanisms of their effects. Here, we analyzed microRNA expression profiles in lung tissues from LPS-challenged mice using miRNA microarray. Because microRNA-27a (miR-27a) was one of the miRNAs being most significantly downregulated, which has an important role in regulation of inflammation, we investigated its function. Overexpression of miR-27a by agomir-27a improved lung injury, as evidenced by the reduced histopathological changes, lung wet/dry (W/D) ratio, lung microvascular permeability and apoptosis in the lung tissues, as well as ameliorative survival of ALI mice. This was accompanied by the alleviating of inflammation, such as the reduced total BALF cell and neutrophil counts, decreased levels of tumor necrosis factor alpha (TNF-α), interleukin-1 (IL-6) interleukin-1β (IL-1β) and myeloperoxidase (MPO) activity in BAL fluid. Toll-like receptor 4 (TLR4), an important regulator of the nuclear factor kappa-B (NF-κB) signaling pathway, was identified as a novel target of miR-27a in RAW264.7 cells. Furthermore, our results showed that LPS stimulation increased the expression of MyD88 and NF-κB p65 (p-p65), but inhibited the expression of inhibitor of nuclear factor-κB-α (IκB-α), suggesting the activation of NF-κB signaling pathway. Further investigations revealed that agomir-miR-27a reversed the promoting effect of LPS on NF-κB signaling pathway. The results here suggested that miR-27a alleviates LPS-induced ALI in mice via reducing inflammation and apoptosis through blocking TLR4/MyD88/NF-κB activation.
Collapse
Affiliation(s)
- MinJie Ju
- a Department of Critial Care Medicine , Zhongshan Hospital, Fudan University , Shanghai China
| | - BoFei Liu
- b Department of Intensive Care Medicine , 1st People Hospital , ZhangjiaGang , China
| | - HongYu He
- a Department of Critial Care Medicine , Zhongshan Hospital, Fudan University , Shanghai China
| | - ZhunYong Gu
- a Department of Critial Care Medicine , Zhongshan Hospital, Fudan University , Shanghai China
| | - YiMei Liu
- a Department of Critial Care Medicine , Zhongshan Hospital, Fudan University , Shanghai China
| | - Ying Su
- a Department of Critial Care Medicine , Zhongshan Hospital, Fudan University , Shanghai China
| | - DuMing Zhu
- a Department of Critial Care Medicine , Zhongshan Hospital, Fudan University , Shanghai China
| | - Jing Cang
- c Department of Anesthesiology , Zhongshan Hospital, Fudan University , Shanghai , China
| | - Zhe Luo
- a Department of Critial Care Medicine , Zhongshan Hospital, Fudan University , Shanghai China
| |
Collapse
|
25
|
Ferguson KT, McQuattie-Pimentel AC, Malsin ES, Sporn PHS. Dynamics of Influenza-induced Lung-Resident Memory T Cells, Anatomically and Functionally Distinct Lung Mesenchymal Populations, and Dampening of Acute Lung Injury by Neutrophil Transfer of Micro-RNA-223 to Lung Epithelial Cells. Am J Respir Cell Mol Biol 2018; 59:397-399. [PMID: 29641210 PMCID: PMC6189642 DOI: 10.1165/rcmb.2018-0047ro] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 04/09/2018] [Indexed: 12/15/2022] Open
Affiliation(s)
- Keith T. Ferguson
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois; and
| | - Alexandra C. McQuattie-Pimentel
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois; and
| | - Elizabeth S. Malsin
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois; and
| | - Peter H. S. Sporn
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois; and
- Medical and Research Services, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois
| |
Collapse
|
26
|
Neudecker V, Brodsky KS, Clambey ET, Schmidt EP, Packard TA, Davenport B, Standiford TJ, Weng T, Fletcher AA, Barthel L, Masterson JC, Furuta GT, Cai C, Blackburn MR, Ginde AA, Graner MW, Janssen WJ, Zemans RL, Evans CM, Burnham EL, Homann D, Moss M, Kreth S, Zacharowski K, Henson PM, Eltzschig HK. Neutrophil transfer of miR-223 to lung epithelial cells dampens acute lung injury in mice. Sci Transl Med 2018; 9:9/408/eaah5360. [PMID: 28931657 DOI: 10.1126/scitranslmed.aah5360] [Citation(s) in RCA: 139] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Accepted: 05/23/2017] [Indexed: 12/11/2022]
Abstract
Intercellular transfer of microRNAs can mediate communication between critical effector cells. We hypothesized that transfer of neutrophil-derived microRNAs to pulmonary epithelial cells could alter mucosal gene expression during acute lung injury. Pulmonary-epithelial microRNA profiling during coculture of alveolar epithelial cells with polymorphonuclear neutrophils (PMNs) revealed a selective increase in lung epithelial cell expression of microRNA-223 (miR-223). Analysis of PMN-derived supernatants showed activation-dependent release of miR-223 and subsequent transfer to alveolar epithelial cells during coculture in vitro or after ventilator-induced acute lung injury in mice. Genetic studies indicated that miR-223 deficiency was associated with severe lung inflammation, whereas pulmonary overexpression of miR-223 in mice resulted in protection during acute lung injury induced by mechanical ventilation or by infection with Staphylococcus aureus Studies of putative miR-223 gene targets implicated repression of poly(adenosine diphosphate-ribose) polymerase-1 (PARP-1) in the miR-223-dependent attenuation of lung inflammation. Together, these findings suggest that intercellular transfer of miR-223 from neutrophils to pulmonary epithelial cells may dampen acute lung injury through repression of PARP-1.
Collapse
Affiliation(s)
- Viola Neudecker
- Organ Protection Program, Department of Anesthesiology, University of Colorado Denver, Aurora, CO 80045, USA. .,Department of Anesthesiology, University Hospital, Ludwig-Maximilian University of Munich, 81377 Munich, Germany
| | - Kelley S Brodsky
- Organ Protection Program, Department of Anesthesiology, University of Colorado Denver, Aurora, CO 80045, USA
| | - Eric T Clambey
- Organ Protection Program, Department of Anesthesiology, University of Colorado Denver, Aurora, CO 80045, USA
| | - Eric P Schmidt
- Organ Protection Program, Department of Anesthesiology, University of Colorado Denver, Aurora, CO 80045, USA.,Program in Translational Lung Research, Department of Medicine, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Thomas A Packard
- Department of Immunology and Microbiology, University of Colorado Denver School of Medicine and National Jewish Health, Denver, CO 80206, USA
| | - Bennett Davenport
- Organ Protection Program, Department of Anesthesiology, University of Colorado Denver, Aurora, CO 80045, USA
| | - Theodore J Standiford
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Tingting Weng
- Department of Biochemistry and Molecular Biology, University of Texas-Houston Medical School, Houston, TX 77030, USA
| | - Ashley A Fletcher
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Lea Barthel
- Department of Medicine, National Jewish Health, Denver, CO 80206, USA
| | - Joanne C Masterson
- Section of Pediatric Gastroenterology, Hepatology and Nutrition, Gastrointestinal Eosinophilic Diseases Program, Department of Pediatrics, Digestive Health Institute, Children's Hospital Colorado; Mucosal Inflammation Program, Department of Medicine, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Glenn T Furuta
- Section of Pediatric Gastroenterology, Hepatology and Nutrition, Gastrointestinal Eosinophilic Diseases Program, Department of Pediatrics, Digestive Health Institute, Children's Hospital Colorado; Mucosal Inflammation Program, Department of Medicine, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Chunyan Cai
- Department of Internal Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Michael R Blackburn
- Department of Biochemistry and Molecular Biology, University of Texas-Houston Medical School, Houston, TX 77030, USA
| | - Adit A Ginde
- Organ Protection Program, Department of Anesthesiology, University of Colorado Denver, Aurora, CO 80045, USA.,Department of Emergency Medicine, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Michael W Graner
- Department of Neurosurgery, University of Colorado Denver, Aurora, CO 80045, USA
| | - William J Janssen
- Organ Protection Program, Department of Anesthesiology, University of Colorado Denver, Aurora, CO 80045, USA.,Department of Medicine, National Jewish Health, Denver, CO 80206, USA
| | - Rachel L Zemans
- Department of Medicine, National Jewish Health, Denver, CO 80206, USA
| | - Christopher M Evans
- Organ Protection Program, Department of Anesthesiology, University of Colorado Denver, Aurora, CO 80045, USA.,Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Ellen L Burnham
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Dirk Homann
- Organ Protection Program, Department of Anesthesiology, University of Colorado Denver, Aurora, CO 80045, USA
| | - Marc Moss
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Simone Kreth
- Department of Anesthesiology, University Hospital, Ludwig-Maximilian University of Munich, 81377 Munich, Germany
| | - Kai Zacharowski
- Department of Anesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital Frankfurt, 60590 Frankfurt am Main, Germany
| | - Peter M Henson
- Organ Protection Program, Department of Anesthesiology, University of Colorado Denver, Aurora, CO 80045, USA.,Department of Immunology and Microbiology, University of Colorado Denver School of Medicine and National Jewish Health, Denver, CO 80206, USA
| | - Holger K Eltzschig
- Organ Protection Program, Department of Anesthesiology, University of Colorado Denver, Aurora, CO 80045, USA.,Department of Anesthesiology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| |
Collapse
|
27
|
Chang YW, Tseng CP, Lee CH, Hwang TL, Chen YL, Su MT, Chong KY, Lan YW, Wu CC, Chen KJ, Lu FH, Liao HR, Hsueh C, Hsieh PW. β-Nitrostyrene derivatives attenuate LPS-mediated acute lung injury via the inhibition of neutrophil-platelet interactions and NET release. Am J Physiol Lung Cell Mol Physiol 2018; 314:L654-L669. [PMID: 29351433 DOI: 10.1152/ajplung.00501.2016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Acute lung injury (ALI) and the acute respiratory distress syndrome (ARDS) are high-mortality and life-threatening diseases that are associated with neutrophil activation and accumulation within lung tissue. Emerging evidence indicates that neutrophil-platelet aggregates (NPAs) at sites of injury increase acute inflammation and contribute to the development of ALI. Although numerous studies have increased our understanding of the pathophysiology of ALI, there is still a lack of innovative and useful treatments that reduce mortality, emphasizing that there is an urgent need for novel treatment strategies. In this study, a new series of small compounds of β-nitrostyrene derivatives (BNSDs) were synthesized, and their anti-inflammatory bioactivities on neutrophils and platelets were evaluated. The new small compound C7 modulates neutrophil function by inhibiting superoxide generation and elastase release. Compound C7 elicits protective effects on LPS-induced paw edema and acute lung injury via the inhibition of neutrophil accumulation, proinflammatory mediator release, platelet aggregation, myeloperoxidase activity, and neutrophil extracellular trap (NET) release. NET formation was identified as the bridge for the critical interactions between neutrophils and platelets by confocal microscopy and flow cytometry. This research provides new insights for elucidating the complicated regulation of neutrophils and platelets in ALI and sheds further light on future drug development strategies for ALI/ARDS and acute inflammatory diseases.
Collapse
Affiliation(s)
- Yao-Wen Chang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Graduate Institute of Natural Products, College of Medicine, and Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University , Taoyuan , Taiwan
| | - Ching-Ping Tseng
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Molecular Medicine Research Center, Chang Gung University , Taoyuan , Taiwan.,Department of Laboratory Medicine, Chang Gung Memorial Hospital , Taoyuan , Taiwan
| | - Chih-Hsun Lee
- Graduate Institute of Natural Products, College of Medicine, and Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University , Taoyuan , Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Graduate Institute of Natural Products, College of Medicine, and Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University , Taoyuan , Taiwan.,Research Center for Industry of Human Ecology, Chang Gung University of Science and Technology , Taoyuan , Taiwan.,Department of Anesthesiology, Chang Gung Memorial Hospital , Linkou , Taiwan
| | - Yu-Li Chen
- Graduate Institute of Natural Products, College of Medicine, and Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University , Taoyuan , Taiwan
| | - Mei-Tzu Su
- Graduate Institute and Department of Microbiology, College of Medicine, National Taiwan University , Taipei , Taiwan
| | - Kowit-Yu Chong
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Department of Thoracic Medicine, Chang Gung Memorial Hospital at Linkou , Taoyuan , Taiwan
| | - Ying-Wei Lan
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University , Taoyuan , Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, Kaohsiung Medical University , Kaohsiung , Taiwan
| | - Kung-Ju Chen
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Graduate Institute of Natural Products, College of Medicine, and Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University , Taoyuan , Taiwan
| | - Fen-Hua Lu
- Graduate Institute of Natural Products, College of Medicine, and Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University , Taoyuan , Taiwan
| | - Hsiang-Ruei Liao
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Graduate Institute of Natural Products, College of Medicine, and Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University , Taoyuan , Taiwan.,Department of Anesthesiology, Chang Gung Memorial Hospital , Linkou , Taiwan
| | - Chuen Hsueh
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Molecular Medicine Research Center, Chang Gung University , Taoyuan , Taiwan.,Department of Pathology, Chang Gung Memorial Hospital, Linkou, Taoyuan , Taiwan
| | - Pei-Wen Hsieh
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Graduate Institute of Natural Products, College of Medicine, and Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University , Taoyuan , Taiwan.,Research Center for Industry of Human Ecology, Chang Gung University of Science and Technology , Taoyuan , Taiwan.,Department of Anesthesiology, Chang Gung Memorial Hospital , Linkou , Taiwan
| |
Collapse
|
28
|
Abstract
Appearance of alveolar protein-rich edema is an early event in the development of acute respiratory distress syndrome (ARDS). Alveolar edema in ARDS results from a significant increase in the permeability of the alveolar epithelial barrier, and represents one of the main factors that contribute to the hypoxemia in these patients. Damage of the alveolar epithelium is considered a major mechanism responsible for the increased pulmonary permeability, which results in edema fluid containing high concentrations of extravasated macromolecules in the alveoli. The breakdown of the alveolar-epithelial barrier is a consequence of multiple factors that include dysregulated inflammation, intense leukocyte infiltration, activation of pro-coagulant processes, cell death and mechanical stretch. The disruption of tight junction (TJ) complexes at the lateral contact of epithelial cells, the loss of contact between epithelial cells and extracellular matrix (ECM), and relevant changes in the communication between epithelial and immune cells, are deleterious alterations that mediate the disruption of the alveolar epithelial barrier and thereby the formation of lung edema in ARDS.
Collapse
Affiliation(s)
- Raquel Herrero
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain.,Department of Critical Care Medicine, Hospital Universitario de Getafe, Madrid, Spain
| | - Gema Sanchez
- Department of Clinical Analysis, Hospital Universitario de Getafe, Madrid, Spain
| | - Jose Angel Lorente
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain.,Department of Critical Care Medicine, Hospital Universitario de Getafe, Madrid, Spain.,Universidad Europea de Madrid, Madrid, Spain
| |
Collapse
|
29
|
Bi J, Cui R, Li Z, Liu C, Zhang J. Astaxanthin alleviated acute lung injury by inhibiting oxidative/nitrative stress and the inflammatory response in mice. Biomed Pharmacother 2017; 95:974-982. [PMID: 28915539 DOI: 10.1016/j.biopha.2017.09.012] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 08/29/2017] [Accepted: 09/04/2017] [Indexed: 12/22/2022] Open
Abstract
The purpose of the present study was to assess the effect of astaxanthin (ASX) treatment on the acute lung injury (ALI) induced by cecal ligation and puncture (CLP) in mice. Mice were randomly allocated into the following groups: (1) the saline control group, in which mice were given saline before sham operation; (2) the ASX control group, in which mice received ASX before sham operation; (3) the ALI group, in which mice were given saline before CLP operation; and (4) the ALI+ASX group, in which mice received ASX before CLP operation. ASX was dissolved in olive oil and administrated by oral gavage for 14days consecutively before the CLP or sham operation. In experiment 1, Kaplan-Meier survival analysis was conducted for 72h after CLP. In experiment 2, blood, bronchoalveolar lavage fluid (BALF) and lung tissues were collected at 24h after the CLP or sham operation to determine the severity of lung injury. The results showed that ASX treatment could significantly decrease the CLP-induced mortality rate in mice. Meanwhile, ASX treatment significantly attenuated CLP-induced lung histopathological injury, inflammatory infiltration, total protein and albumin concentration, and total cell and neutrophil counts in the BALF. Furthermore, ASX treatment alleviated oxidative/nitrative stress, inflammation levels and pulmonary apoptosis in lung tissues. In addition, ASX treatment markedly down-regulated the expression of inducible nitric oxide synthase (i-NOS), nitrotyrosine (NT) and nuclear factor-kappa B (NF-Κb) P65 in the lung tissues compared with that in the ALI group. Astaxanthin treatment had markedly protective effect against ALI in mice, and the potential mechanism is associated with its ability to inhibit the inflammatory response, oxidative/nitrative stress, and pulmonary apoptosis, as well as down-regulate NF-κB P65 expression.
Collapse
Affiliation(s)
- Jianbin Bi
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an Shaanxi 710061, People's Republic of China
| | - Ruixia Cui
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an Shaanxi 710061, People's Republic of China; Department of ICU, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an Shaanxi 710061, People's Republic of China
| | - Zeyu Li
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an Shaanxi 710061, People's Republic of China
| | - Chang Liu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an Shaanxi 710061, People's Republic of China; Department of SICU, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an Shaanxi 710061, People's Republic of China.
| | - Jingyao Zhang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an Shaanxi 710061, People's Republic of China; Department of SICU, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an Shaanxi 710061, People's Republic of China.
| |
Collapse
|
30
|
Abstract
Of the total human body's surface, the majority is internal surface, belonging to the lungs (100 m2) and intestinal tract (400 m2). In comparison, the external surface area, belonging to the skin, comprises less than 1% (2 m2). Continuous exposure of the mucosal surface to external factors (e.g., pathogens, food particles) requires tight regulation to maintain homeostasis. MicroRNAs (miRNAs) have gained noticeable attention as playing important roles in maintaining the steady-state of tissues by modulating immune functions and inflammatory responses. Accordingly, associations have been found between miRNA expression levels and human health conditions and diseases. These findings have important implications in inflammatory diseases involving pulmonary and intestinal mucosa, such as acute lung injury or inflammatory bowel disease. In this review, we highlight the known biology of miRNAs and discuss the role of miRNAs in modulating mucosal defense and homeostasis. Additionally, we discuss miRNAs serving as potential therapeutic targets to treat immunological conditions, particularly mucosal inflammation.
Collapse
Affiliation(s)
- Viola Neudecker
- Department of Anesthesiology, University Hospital, LMU Munich, Munich, Germany.
| | - Xiaoyi Yuan
- Department of Anesthesiology, the University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX, USA
| | - Jessica L Bowser
- Department of Anesthesiology, the University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX, USA
| | - Holger K Eltzschig
- Department of Anesthesiology, the University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX, USA
| |
Collapse
|
31
|
Wei Y, Tejera P, Wang Z, Zhang R, Chen F, Su L, Lin X, Bajwa EK, Thompson BT, Christiani DC. A Missense Genetic Variant in LRRC16A/CARMIL1 Improves Acute Respiratory Distress Syndrome Survival by Attenuating Platelet Count Decline. Am J Respir Crit Care Med 2017; 195:1353-1361. [PMID: 27768389 DOI: 10.1164/rccm.201605-0946oc] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
RATIONALE Platelets are believed to contribute to acute respiratory distress syndrome (ARDS) pathogenesis through inflammatory coagulation pathways. We recently reported that leucine-rich repeat-containing 16A (LRRC16A) modulates baseline platelet counts to mediate ARDS risk. OBJECTIVES To examine the role of LRRC16A in ARDS survival and its mediating effect through platelets. METHODS A total of 414 cases with ARDS from intensive care units (ICUs) were recruited who had exome-wide genotyping data, detailed platelet counts, and follow-up data during ICU hospitalization. Association of LRRC16A single-nucleotide polymorphisms (SNPs) and ARDS prognosis, and the mediating effect of SNPs through platelet counts were analyzed. LRRC16A mRNA expression levels for 39 cases with ARDS were also evaluated. MEASUREMENTS AND MAIN RESULTS Missense SNP rs9358856G>A within LRRC16A was associated with favorable survival within 28 days (hazard ratio [HR], 0.57; 95% confidence interval [CI], 0.38-0.87; P = 0.0084) and 60 days (P = 0.0021) after ICU admission. Patients with ARDS who carried the variant genotype versus the wild-type genotype showed an attenuated platelet count decline (∆PLT) within 28 days (difference of ∆PLT, -27.8; P = 0.025) after ICU admission. Patients with ∆PLT were associated with favorable ARDS outcomes. Mediation analysis indicated that the SNP prognostic effect was mediated through ∆PLT within 28 days (28-day survival: HRIndirect, 0.937; 95% CI, 0.918-0.957; P = 0.0009, 11.53% effects mediated; 60-day survival: HRIndirect, 0.919; 95% CI, 0.901-0.936; P = 0.0001, 14.35% effects mediated). Functional exploration suggested that this SNP reduced LRRC16A expression at ICU admission, which was associated with a lesser ∆PLT during ICU hospitalization. CONCLUSIONS LRRC16A appears to mediate ∆PLT after ICU admission to affect the prognosis in patients with ARDS.
Collapse
Affiliation(s)
- Yongyue Wei
- 1 Department of Environmental Health and.,2 Department of Biostatistics, School of Public Health and.,3 China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China; and
| | | | | | - Ruyang Zhang
- 1 Department of Environmental Health and.,2 Department of Biostatistics, School of Public Health and
| | - Feng Chen
- 2 Department of Biostatistics, School of Public Health and.,3 China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China; and
| | - Li Su
- 1 Department of Environmental Health and
| | - Xihong Lin
- 4 Department of Biostatistics, Harvard School of Public Health, Boston, Massachusetts
| | - Ednan K Bajwa
- 5 Division of Pulmonary and Critical Care, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - B Taylor Thompson
- 5 Division of Pulmonary and Critical Care, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - David C Christiani
- 1 Department of Environmental Health and.,3 China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China; and.,5 Division of Pulmonary and Critical Care, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| |
Collapse
|
32
|
Wu Y, Jin F, Wang Y, Li F, Ren Z, Wang Y. In vitro and in vivo inhibitory effects of 6-hydroxyrubiadin on lipopolysaccharide-induced inflammation. Immunopharmacol Immunotoxicol 2017; 39:107-116. [PMID: 28276734 DOI: 10.1080/08923973.2017.1295053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Inflammation is a defensive response against a multitude of harmful stimuli and stress conditions such as tissue injury, and is one of the most common pathological processes of human diseases. 6-Hydroxyrubiadin, an anthraquinone isolated from Rubia cordifolia L., exhibits several bioactive properties. The aim of this study was to evaluate whether 6-hydroxyrubiadin can reduce the production of pro-inflammatory cytokines and ameliorate acute lung injury (ALI) in a mouse model. In this study, we demonstrated that 6-hydroxyrubiadin suppressed lipopolysaccharide (LPS)-induced nuclear factor-kappa B activation as well as the phosphorylation of c-Jun N-terminal kinase in RAW 264.7 macrophages. In addition, we also showed that 6-hydroxyrubiadin inhibited the expression of tumor necrosis factor (TNF)-α, interleukin (IL)-1β and IL-6 in phorbol myristate acetate (PMA)-primed U937 and RAW 264.7 cells. Furthermore, 6-hydroxyrubiadin treatment reduced the production of these cytokines in vivo and attenuated the severity of LPS-induced ALI. Thus, these results suggested that 6-hydroxyrubiadin may be a potential therapeutic candidate for the treatment of inflammation and inflammatory diseases.
Collapse
Affiliation(s)
- Yanting Wu
- a Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology , Jinan University , Guangzhou , P.R, China
| | - Fujun Jin
- a Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology , Jinan University , Guangzhou , P.R, China
| | - Yiliang Wang
- b College of Pharmacy , Jinan University , Guangzhou , P.R, China
| | - Feng Li
- b College of Pharmacy , Jinan University , Guangzhou , P.R, China
| | - Zhe Ren
- a Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology , Jinan University , Guangzhou , P.R, China
| | - Yifei Wang
- a Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology , Jinan University , Guangzhou , P.R, China
| |
Collapse
|
33
|
Johnson BL, Midura EF, Prakash PS, Rice TC, Kunz N, Kalies K, Caldwell CC. Neutrophil derived microparticles increase mortality and the counter-inflammatory response in a murine model of sepsis. Biochim Biophys Acta Mol Basis Dis 2017; 1863:2554-2563. [PMID: 28108420 DOI: 10.1016/j.bbadis.2017.01.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Revised: 01/04/2017] [Accepted: 01/16/2017] [Indexed: 12/20/2022]
Abstract
Although advances in medical care have significantly improved sepsis survival, sepsis remains the leading cause of death in the ICU. This is likely due to a lack of complete understanding of the pathophysiologic mechanisms that lead to dysfunctional immunity. Neutrophil derived microparticles (NDMPs) have been shown to be the predominant microparticle present at infectious and inflamed foci in human models, however their effect on the immune response to inflammation and infection is sepsis has not been fully elucidated. As NDMPs may be a potential diagnostic and therapeutic target, we sought to determine the impact NDMPs on the immune response to a murine polymicrobial sepsis. We found that peritoneal neutrophil numbers, bacterial loads, and NDMPs were increased in our abdominal sepsis model. When NDMPs were injected into septic mice, we observed increased bacterial load, decreased neutrophil recruitment, increased expression of IL-10 and worsened mortality. Furthermore, the NDMPs express phosphatidylserine and are ingested by F4/80 macrophages via a Tim-4 and MFG-E8 dependent mechanism. Finally, upon treatment, NDMPs decrease macrophage activation, increase IL-10 release and decrease macrophage numbers. Altogether, these data suggest that NDMPs enhance immune dysfunction in sepsis by blunting the function of neutrophils and macrophages, two key cell populations involved in the early immune response to infection. This article is part of a Special Issue entitled: Immune and Metabolic Alterations in Trauma and Sepsis edited by Dr. Raghavan Raju.
Collapse
Affiliation(s)
- Bobby L Johnson
- Division of Research, Department of Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, United States
| | - Emily F Midura
- Division of Research, Department of Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, United States
| | - Priya S Prakash
- Division of Research, Department of Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, United States
| | - Teresa C Rice
- Division of Research, Department of Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, United States
| | - Natalia Kunz
- Division of Research, Department of Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, United States; Institute of Anatomy, University of Luebeck, Luebeck, Germany
| | - Kathrin Kalies
- Division of Research, Department of Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, United States; Institute of Anatomy, University of Luebeck, Luebeck, Germany
| | - Charles C Caldwell
- Division of Research, Department of Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, United States.
| |
Collapse
|
34
|
Wu Y, Jin F, Wang Y, Li F, Wang L, Wang Q, Ren Z, Wang Y. In vitro and in vivo anti-inflammatory effects of theaflavin-3,3'-digallate on lipopolysaccharide-induced inflammation. Eur J Pharmacol 2016; 794:52-60. [PMID: 27871911 DOI: 10.1016/j.ejphar.2016.11.027] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 11/18/2016] [Accepted: 11/18/2016] [Indexed: 10/20/2022]
Abstract
Inflammation is a defensive response against various harmful stimuli and stress conditions, such as tissue injury and one of the most common pathological processes occurring in human diseases. Theaflavin-3,3'-digallate, one of the theaflavins present in black tea, exhibits several bioactive properties, including the ability to lower the incidence of coronary heart disease, a positive effect on the bone mineral density, and the ability to prevent cancer. The aim of this study was to evaluate whether theaflavin-3,3'-digallate could reduce the production of pro-inflammatory cytokines in vivo and in vitro and ameliorate acute lung injury (ALI) in a mouse model. In this study, we demonstrated that theaflavin-3,3'-digallate suppressed the lipopolysaccharide (LPS)-induced phosphorylation of c-Jun N-terminal kinase and p38 mitogen-activated protein kinase in RAW 264.7 macrophages. In addition, we also showed that theaflavin-3,3'-digallate inhibited the expression of tumor necrosis factor alpha, interleukin -1 beta, and interleukin 6 in phorbol myristate acetate -primed U937 and RAW 264.7 cells. Furthermore, theaflavin-3,3'-digallate treatment attenuated the severity of LPS-induced ALI in mice. These results suggested that theaflavin-3,3'-digallate might be a potential therapeutic candidate for the treatment of inflammation and inflammatory diseases.
Collapse
Affiliation(s)
- Yanting Wu
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, 510632 Guangzhou, PR China
| | - Fujun Jin
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, 510632 Guangzhou, PR China
| | - Yiliang Wang
- College of Pharmacy, Jinan University, 510632 Guangzhou, PR China
| | - Feng Li
- College of Pharmacy, Jinan University, 510632 Guangzhou, PR China
| | - Lu Wang
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, 510632 Guangzhou, PR China
| | - Qiaoli Wang
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, 510632 Guangzhou, PR China
| | - Zhe Ren
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, 510632 Guangzhou, PR China
| | - Yifei Wang
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, 510632 Guangzhou, PR China.
| |
Collapse
|
35
|
Abstract
This manuscript will review our current understanding of cellular adhesion molecules (CAMs) relevant to the circulatory system, their physiological role in control of vascular homeostasis, innate and adaptive immune responses, and their importance in pathophysiological (disease) processes such as acute lung injury, atherosclerosis, and pulmonary hypertension. This is a complex and rapidly changing area of research that is incompletely understood. By design, we will begin with a brief overview of the structure and classification of the major groups of adhesion molecules and their physiological functions including cellular adhesion and signaling. The role of specific CAMs in the process of platelet aggregation and hemostasis and leukocyte adhesion and transendothelial migration will be reviewed as examples of the complex and cooperative interplay between CAMs during physiological and pathophysiological processes. The role of the endothelial glycocalyx and the glycobiology of this complex system related to inflammatory states such as sepsis will be reviewed. We will then focus on the role of adhesion molecules in the pathogenesis of specific disease processes involving the lungs and cardiovascular system. The potential of targeting adhesion molecules in the treatment of immune and inflammatory diseases will be highlighted in the relevant sections throughout the manuscript.
Collapse
Affiliation(s)
- Eric P Schmidt
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado, Aurora, Colorado, USA
| | - Wolfgang M Kuebler
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Ontario, Canada
- Departments of Surgery and Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Warren L Lee
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Ontario, Canada
- Division of Respirology and the Interdepartmental Division of Critical Care Medicine, Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Gregory P Downey
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado, Aurora, Colorado, USA
- Division of Pulmonary, Critical Care, and Sleep Medicine, Departments of Medicine, Pediatrics, and Biomedical Research, National Jewish Health, Denver, Colorado, USA
- Departments of Medicine, and Immunology and Microbiology, University of Colorado, Aurora, Colorado, USA
| |
Collapse
|
36
|
Cabrera-Benítez NE, Valladares F, García-Hernández S, Ramos-Nuez Á, Martín-Barrasa JL, Martínez-Saavedra MT, Rodríguez-Gallego C, Muros M, Flores C, Liu M, Slutsky AS, Villar J. Altered Profile of Circulating Endothelial-Derived Microparticles in Ventilator-Induced Lung Injury. Crit Care Med 2015; 43:e551-9. [PMID: 26308427 DOI: 10.1097/CCM.0000000000001280] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVES Pulmonary endothelial cell injury is central to the pathophysiology of acute lung injury. Mechanical ventilation can cause endothelial disruption and injury, even in the absence of preexisting inflammation. Platelet-endothelial cell adhesion molecule-1 is a transmembrane protein connecting adjacent endothelial cells. We hypothesized that injurious mechanical ventilation will increase circulating lung endothelial-derived microparticles, defined as microparticles positive for platelet-endothelial cell adhesion molecule-1, which could serve as potential biomarkers and mediators of ventilator-induced lung injury. DESIGN Prospective randomized, controlled, animal investigation. SETTING A hospital preclinical animal laboratory. SUBJECTS Forty-eight Sprague-Dawley rats. INTERVENTIONS Animals were randomly allocated to one of the three following ventilatory protocols for 4 hours: spontaneous breathing (control group), mechanical ventilation with low tidal volume (6 mL/kg), and mechanical ventilation with high tidal volume (20 mL/kg). In both mechanical ventilation groups, positive end-expiratory pressure of 2 cm H2O was applied. MEASUREMENTS AND MAIN RESULTS We analyzed histologic lung damage, gas exchange, wet-to-dry lung weight ratio, serum cytokines levels, circulating endothelial-derived microparticles, platelet-endothelial cell adhesion molecule-1 lung protein content, and immunohistochemistry. When compared with low-tidal volume mechanical ventilation, high-tidal volume ventilation increased lung edema score and caused gas-exchange deterioration. These changes were associated with a marked increased of circulating endothelial-derived microparticles and a reduction of platelet-endothelial cell adhesion molecule-1 protein levels in the high-tidal volume lungs (p < 0.0001). CONCLUSIONS There is an endothelial-derived microparticle profile associated with disease-specific features of ventilator-induced lung injury. This profile could serve both as a biomarker of acute lung injury and, potentially, as a mediator of systemic propagation of pulmonary inflammatory response.
Collapse
|
37
|
Danesh-meyer HV, Zhang J, Acosta ML, Rupenthal ID, Green CR. Connexin43 in retinal injury and disease. Prog Retin Eye Res 2016; 51:41-68. [DOI: 10.1016/j.preteyeres.2015.09.004] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 09/25/2015] [Accepted: 09/27/2015] [Indexed: 12/26/2022]
|
38
|
Wang L, Li Y, Qin H, Xing D, Su J, Hu Z. Crosstalk between ACE2 and PLGF regulates vascular permeability during acute lung injury. Am J Transl Res 2016; 8:1246-1252. [PMID: 27158411 PMCID: PMC4846968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2016] [Accepted: 01/29/2016] [Indexed: 06/05/2023]
Abstract
Angiotensin converting enzyme 2 (ACE2) treatment suppresses the severity of acute lung injury (ALI), through antagonizing hydrolyzing angiotensin II (AngII) and the ALI-induced apoptosis of pulmonary endothelial cells. Nevertheless, the effects of ACE2 on vessel permeability and its relationship with placental growth factor (PLGF) remain ill-defined. In the current study, we examined the relationship between ACE2 and PLGF in ALI model in mice. We used a previously published bleomycin method to induce ALI in mice, and treated the mice with ACE2. We analyzed the levels of PLGF in these mice. The mouse lung vessel permeability was determined by a fluorescence pharmacokinetic assay following i.v. injection of 62.5 µg/kg Visudyne. PLGF pump or soluble Flt-1 (sFlt-1) pump was given to augment or suppress PLGF effects, respectively. The long-term effects on lung function were determined by measurement of lung resistance using methacholine. We found that ACE2 treatment did not alter PLGF levels in lung, but antagonized the effects of PLGF on increases of lung vessel permeability. Ectogenic PLGF abolished the antagonizing effects of ACE2 on the vessel permeability against PLGF. On the other hand, suppression of PLGF signaling mimicked the effects of ACE2 on the vessel permeability against PLGF. The suppression of vessel permeability resulted in improvement of lung function after ALI. Thus, ACE2 may antagonize the PLGF-mediated increases in lung vessel permeability during ALI, resulting in improvement of lung function after ALI.
Collapse
Affiliation(s)
- Lantao Wang
- Department of Emergency, Fourth Hospital of Hebei Medical UniversityShijiazhuang 050011, China
| | - Yong Li
- Department of Surgery, Fourth Hospital of Hebei Medical UniversityShijiazhuang 050011, China
| | - Hao Qin
- Department of Emergency, Fourth Hospital of Hebei Medical UniversityShijiazhuang 050011, China
| | - Dong Xing
- Department of Emergency, Fourth Hospital of Hebei Medical UniversityShijiazhuang 050011, China
| | - Jie Su
- Department of Emergency, Fourth Hospital of Hebei Medical UniversityShijiazhuang 050011, China
| | - Zhenjie Hu
- Department of Emergency, Fourth Hospital of Hebei Medical UniversityShijiazhuang 050011, China
| |
Collapse
|
39
|
Yeh YC, Yang CP, Lee SS, Horng CT, Chen HY, Cho TH, Yang ML, Lee CY, Li MC, Kuan YH. Acute lung injury induced by lipopolysaccharide is inhibited by wogonin in mice via reduction of Akt phosphorylation and RhoA activation. J Pharm Pharmacol 2016; 68:257-63. [DOI: 10.1111/jphp.12500] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 10/28/2015] [Indexed: 12/24/2022]
Abstract
Abstract
Objectives
Neutrophil infiltration into the lung is the critical characteristic of acute lung injury (ALI), which is a clinical state with acute inflammatory syndrome. Up to now, there is no effective medicine for ALI. Wogonin has been shown to posses serval biological activities including anti-inflammation, anti-oxidant and anti-carcinoma.
Methods
Acute lung injury was induced by intratracheal injection of LPS, and wogonin at various concentrations was injected intraperitoneally 30 min prior to LPS. Contents of myeloperoxidase (MPO) and expression of chemokines and adhesion molecules were determined by commercially and ELISA assay kits, respectively. Akt phosphorylation and RhoA activation were measured by western blot and RhoA pull-down activation assay, respectively.
Key finding
Neutrophil infiltration was reduced by wogonin in a concentration-dependent manner in the LPS-induced ALI mice model. LPS-induced proinflammatory cytokines and adhesion molecules were inhibited by wogonin in bronchoalveolar lavage fluid (BALF) with LPS-induced ALI. Furthermore, wogonin suppressed Akt phosphorylation and RhoA activation in lungs in LPS-induced ALI. The similar parallel trend was observed as wogonin reduced LPS-induced neutrophils infiltration, proinflammatory cytokines generation, adhesion molecules expression, Akt phosphorylation, and RhoA activation.
Summary
These results suggested that the effects of wogonin in LPS-induced ALI were induced by inhibition of Akt phosphorylation and RhoA activation.
Collapse
Affiliation(s)
- Yen-Cheng Yeh
- Department of Internal Medicine, Kaohsiung Armed Forces General Hospital, Kaohsiung, Taiwan
| | - Ching-Ping Yang
- Department of Biotechology and Laboratory Science in Medicine, Yang-Ming University, Taipei, Taiwan
| | - Shiuan-Shinn Lee
- School of Public Health, Chung Shan Medical University, Taichung, Taiwan
| | - Chi-Ting Horng
- Medical Education Center, Kaohsiung Armed Forces General Hospitl, Kaohsiung City, Taiwan
- Institute of Biochemistry and Biotechnology, Chung Shang Medical University, Taichung, Taiwan
| | - Hung-Yi Chen
- School of Pharmacy, China Medical University, Taichung, Taiwan
| | - Ta-Hsiung Cho
- Department of Optometry, Shu Zen Junior College of Medicine and Management, Kaohsiung, Taiwan
| | - Ming-Ling Yang
- Department of Anatomy, School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Chien-Ying Lee
- Department of Pharmacology, School of Medicine, Chung Shan Medical University,, Taichung, Taiwan
- Department of Pharmacy, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Miao-Cing Li
- Department of Pharmacology, School of Medicine, Chung Shan Medical University,, Taichung, Taiwan
| | - Yu-Hsiang Kuan
- Department of Pharmacology, School of Medicine, Chung Shan Medical University,, Taichung, Taiwan
- Department of Pharmacy, Chung Shan Medical University Hospital, Taichung, Taiwan
| |
Collapse
|
40
|
Cognasse F, Hamzeh-cognasse H, Laradi S, Chou M, Seghatchian J, Burnouf T, Boulanger C, Garraud O, Amabile N. The role of microparticles in inflammation and transfusion: A concise review. Transfus Apher Sci 2015; 53:159-67. [DOI: 10.1016/j.transci.2015.10.013] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
41
|
Patel BV, Tatham KC, Wilson MR, O'Dea KP, Takata M. In vivo compartmental analysis of leukocytes in mouse lungs. Am J Physiol Lung Cell Mol Physiol 2015; 309:L639-52. [PMID: 26254421 PMCID: PMC4593833 DOI: 10.1152/ajplung.00140.2015] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 08/04/2015] [Indexed: 12/12/2022] Open
Abstract
The lung has a unique structure consisting of three functionally different compartments (alveolar, interstitial, and vascular) situated in an extreme proximity. Current methods to localize lung leukocytes using bronchoalveolar lavage and/or lung perfusion have significant limitations for determination of location and phenotype of leukocytes. Here we present a novel method using in vivo antibody labeling to enable accurate compartmental localization/quantification and phenotyping of mouse lung leukocytes. Anesthetized C57BL/6 mice received combined in vivo intravenous and intratracheal labeling with fluorophore-conjugated anti-CD45 antibodies, and lung single-cell suspensions were analyzed by flow cytometry. The combined in vivo intravenous and intratracheal CD45 labeling enabled robust separation of the alveolar, interstitial, and vascular compartments of the lung. In naive mice, the alveolar compartment consisted predominantly of resident alveolar macrophages. The interstitial compartment, gated by events negative for both intratracheal and intravenous CD45 staining, showed two conventional dendritic cell populations, as well as a Ly6Clo monocyte population. Expression levels of MHCII on these interstitial monocytes were much higher than on the vascular Ly6Clo monocyte populations. In mice exposed to acid aspiration-induced lung injury, this protocol also clearly distinguished the three lung compartments showing the dynamic trafficking of neutrophils and exudative monocytes across the lung compartments during inflammation and resolution. This simple in vivo dual-labeling technique substantially increases the accuracy and depth of lung flow cytometric analysis, facilitates a more comprehensive examination of lung leukocyte pools, and enables the investigation of previously poorly defined “interstitial” leukocyte populations during models of inflammatory lung diseases.
Collapse
Affiliation(s)
- Brijesh V Patel
- Section of Anaesthetics, Pain Medicine and Intensive Care, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, United Kingdom
| | - Kate C Tatham
- Section of Anaesthetics, Pain Medicine and Intensive Care, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, United Kingdom
| | - Michael R Wilson
- Section of Anaesthetics, Pain Medicine and Intensive Care, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, United Kingdom
| | - Kieran P O'Dea
- Section of Anaesthetics, Pain Medicine and Intensive Care, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, United Kingdom
| | - Masao Takata
- Section of Anaesthetics, Pain Medicine and Intensive Care, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, United Kingdom
| |
Collapse
|
42
|
Wei Y, Wang Z, Su L, Chen F, Tejera P, Bajwa EK, Wurfel MM, Lin X, Christiani DC. Platelet count mediates the contribution of a genetic variant in LRRC16A to ARDS risk. Chest 2015; 147:607-617. [PMID: 25254322 DOI: 10.1378/chest.14-1246] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Platelets are believed to be critical in pulmonary-origin ARDS as mediators of endothelial damage through their interactions with fibrinogen and multiple signal transduction pathways. A prior meta-analysis identified five loci for platelet count (PLT): BAD, LRRC16A, CD36, JMJD1C, and SLMO2. This study aims to validate the quantitative trait loci (QTLs) of PLT within BAD, LRRC16A, CD36, JMJD1C, and SLMO2 among critically ill patients and to investigate the associations of these QTLs with ARDS risk that may be mediated through PLT. METHODS ARDS cases and at-risk control subjects were recruited from the intensive care unit of the Massachusetts General Hospital. Exome-wide genotyping data of 629 ARDS cases and 1,026 at-risk control subjects and genome-wide gene expression profiles of 18 at-risk control subjects were generated for analysis. RESULTS Single-nucleotide polymorphism (SNP) rs7766874 within LRRC16A was a significant locus for PLT among at-risk control subjects (β = -13.00; 95% CI, -23.22 to -2.77; P = .013). This association was validated using LRRC16A gene expression data from at-risk control subjects (β = 77.03 per 1 SD increase of log2-transformed expression; 95% CI, 27.26-126.80; P = .005). Further, rs7766874 was associated with ARDS risk conditioned on PLT (OR = 0.68; 95% CI, 0.51-0.90; P = .007), interacting with PLT (OR = 1.15 per effect allele per 100 × 103/μL of PLT; 95% CI, 1.03-1.30; P = .015), and mediated through PLT (indirect OR = 1.045; 95% CI, 1.007-1.085; P = .021). CONCLUSIONS Our findings support the role of LRRC16A in platelet formation and suggest the importance of LRRC16A in ARDS pathophysiology by interacting with, and being mediated through, platelets.
Collapse
Affiliation(s)
- Yongyue Wei
- Department of Environmental Health, Department of Epidemiology and Biostatistics, Ministry of Education Key Laboratory for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Zhaoxi Wang
- Department of Environmental Health, Harvard School of Public Health, Boston, MA
| | - Li Su
- Department of Environmental Health, Harvard School of Public Health, Boston, MA
| | - Feng Chen
- Department of Epidemiology and Biostatistics, Ministry of Education Key Laboratory for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Paula Tejera
- Department of Environmental Health, Harvard School of Public Health, Boston, MA
| | - Ednan K Bajwa
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Mark M Wurfel
- Division of Pulmonary and Critical Care Medicine, University of Washington, Harborview Medical Center, Seattle, WA
| | - Xihong Lin
- Department of Biostatistics, Harvard School of Public Health, Boston, MA
| | - David C Christiani
- Department of Environmental Health, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA.
| |
Collapse
|
43
|
Letsiou E, Sammani S, Zhang W, Zhou T, Quijada H, Moreno-Vinasco L, Dudek SM, Garcia JGN. Pathologic mechanical stress and endotoxin exposure increases lung endothelial microparticle shedding. Am J Respir Cell Mol Biol 2015; 52:193-204. [PMID: 25029266 DOI: 10.1165/rcmb.2013-0347oc] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Acute lung injury (ALI) results from infectious challenges and from pathologic lung distention produced by excessive tidal volume delivered during mechanical ventilation (ventilator-induced lung injury [VILI]) and is characterized by extensive alveolar and vascular dysfunction. Identification of novel ALI therapies is hampered by the lack of effective ALI/VILI biomarkers. We explored endothelial cell (EC)-derived microparticles (EMPs) (0.1-1 μm) as potentially important markers and potential mediators of lung vascular injury in preclinical models of ALI and VILI. We characterized EMPs (annexin V and CD31 immunoreactivity) produced from human lung ECs exposed to physiologic or pathologic mechanical stress (5 or 18% cyclic stretch [CS]) or to endotoxin (LPS). EC exposure to 18% CS or to LPS resulted in increased EMP shedding compared with static cells (∼ 4-fold and ∼ 2.5-fold increases, respectively). Proteomic analysis revealed unique 18% CS-derived (n = 10) and LPS-derived EMP proteins (n = 43). VILI-challenged mice (40 ml/kg, 4 h) exhibited increased plasma and bronchoalveolar lavage CD62E (E-selectin)-positive MPs compared with control mice. Finally, mice receiving intratracheal instillation of 18% CS-derived EMPs displayed significant lung inflammation and injury. These findings indicate that ALI/VILI-producing stimuli induce significant shedding of distinct EMP populations that may serve as potential ALI biomarkers and contribute to the severity of lung injury.
Collapse
Affiliation(s)
- Eleftheria Letsiou
- 1 Division of Pulmonary, Critical Care, Sleep, and Allergy, Department of Medicine
| | | | | | | | | | | | | | | |
Collapse
|
44
|
Eltzschig HK, Bratton DL, Colgan SP. Targeting hypoxia signalling for the treatment of ischaemic and inflammatory diseases. Nat Rev Drug Discov 2015; 13:852-69. [PMID: 25359381 DOI: 10.1038/nrd4422] [Citation(s) in RCA: 260] [Impact Index Per Article: 28.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Hypoxia-inducible factors (HIFs) are stabilized during adverse inflammatory processes associated with disorders such as inflammatory bowel disease, pathogen infection and acute lung injury, as well as during ischaemia-reperfusion injury. HIF stabilization and hypoxia-induced changes in gene expression have a profound impact on the inflamed tissue microenvironment and on disease outcomes. Although the mechanism that initiates HIF stabilization may vary, the final molecular steps that control HIF stabilization converge on a set of oxygen-sensing prolyl hydroxylases (PHDs) that mark HIFs for proteasomal degradation. PHDs are therefore promising therapeutic targets. In this Review, we discuss the emerging potential and associated challenges of targeting the PHD-HIF pathway for the treatment of inflammatory and ischaemic diseases.
Collapse
Affiliation(s)
- Holger K Eltzschig
- Organ Protection Program, Department of Anesthesiology, University of Colorado School of Medicine, Aurora, Colorado 80045, USA
| | - Donna L Bratton
- Department of Pediatrics, National Jewish Health, Denver, Colorado 80206, USA
| | - Sean P Colgan
- Mucosal Inflammation Program, Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado 80045, USA
| |
Collapse
|
45
|
Mangold A, Alias S, Scherz T, Hofbauer T, Jakowitsch J, Panzenböck A, Simon D, Laimer D, Bangert C, Kammerlander A, Mascherbauer J, Winter MP, Distelmaier K, Adlbrecht C, Preissner KT, Lang IM. Coronary neutrophil extracellular trap burden and deoxyribonuclease activity in ST-elevation acute coronary syndrome are predictors of ST-segment resolution and infarct size. Circ Res 2014; 116:1182-92. [PMID: 25547404 DOI: 10.1161/circresaha.116.304944] [Citation(s) in RCA: 310] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
RATIONALE Mechanisms of coronary occlusion in ST-elevation acute coronary syndrome are poorly understood. We have previously reported that neutrophil (polymorphonuclear cells [PMNs]) accumulation in culprit lesion site (CLS) thrombus is a predictor of cardiovascular outcomes. OBJECTIVE The goal of this study was to characterize PMN activation at the CLS. We examined the relationships between CLS neutrophil extracellular traps (NETs), bacterial components as triggers of NETosis, activity of endogenous deoxyribonuclease, ST-segment resolution, and infarct size. METHODS AND RESULTS We analyzed coronary thrombectomies from 111 patients with ST-elevation acute coronary syndrome undergoing primary percutaneous coronary intervention. Thrombi were characterized by immunostaining, flow cytometry, bacterial profiling, and immunometric and enzymatic assays. Compared with femoral PMNs, CLS PMNs were highly activated and formed aggregates with platelets. Nucleosomes, double-stranded DNA, neutrophil elastase, myeloperoxidase, and myeloid-related protein 8/14 were increased in CLS plasma, and NETs contributed to the scaffolds of particulate coronary thrombi. Copy numbers of Streptococcus species correlated positively with dsDNA. Thrombus NET burden correlated positively with infarct size and negatively with ST-segment resolution, whereas CLS deoxyribonuclease activity correlated negatively with infarct size and positively with ST-segment resolution. Recombinant deoxyribonuclease accelerated the lysis of coronary thrombi ex vivo. CONCLUSIONS PMNs are highly activated in ST-elevation acute coronary syndrome and undergo NETosis at the CLS. Coronary NET burden and deoxyribonuclease activity are predictors of ST-segment resolution and myocardial infarct size.
Collapse
Affiliation(s)
- Andreas Mangold
- From the Division of Cardiology, Department of Internal Medicine II (A.M., S.A., T.S., T.H., J.J., A.P., D.S., A.K., J.M., M.-P.W., K.D., C.A., I.M.L.), Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology (D.L., C.B.), Vienna General Hospital, Medical University of Vienna, Austria; and Institute for Biochemistry, Medical School, Justus-Liebig-University, Giessen, Germany (K.T.P.)
| | - Sherin Alias
- From the Division of Cardiology, Department of Internal Medicine II (A.M., S.A., T.S., T.H., J.J., A.P., D.S., A.K., J.M., M.-P.W., K.D., C.A., I.M.L.), Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology (D.L., C.B.), Vienna General Hospital, Medical University of Vienna, Austria; and Institute for Biochemistry, Medical School, Justus-Liebig-University, Giessen, Germany (K.T.P.)
| | - Thomas Scherz
- From the Division of Cardiology, Department of Internal Medicine II (A.M., S.A., T.S., T.H., J.J., A.P., D.S., A.K., J.M., M.-P.W., K.D., C.A., I.M.L.), Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology (D.L., C.B.), Vienna General Hospital, Medical University of Vienna, Austria; and Institute for Biochemistry, Medical School, Justus-Liebig-University, Giessen, Germany (K.T.P.)
| | - Thomas Hofbauer
- From the Division of Cardiology, Department of Internal Medicine II (A.M., S.A., T.S., T.H., J.J., A.P., D.S., A.K., J.M., M.-P.W., K.D., C.A., I.M.L.), Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology (D.L., C.B.), Vienna General Hospital, Medical University of Vienna, Austria; and Institute for Biochemistry, Medical School, Justus-Liebig-University, Giessen, Germany (K.T.P.)
| | - Johannes Jakowitsch
- From the Division of Cardiology, Department of Internal Medicine II (A.M., S.A., T.S., T.H., J.J., A.P., D.S., A.K., J.M., M.-P.W., K.D., C.A., I.M.L.), Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology (D.L., C.B.), Vienna General Hospital, Medical University of Vienna, Austria; and Institute for Biochemistry, Medical School, Justus-Liebig-University, Giessen, Germany (K.T.P.)
| | - Adelheid Panzenböck
- From the Division of Cardiology, Department of Internal Medicine II (A.M., S.A., T.S., T.H., J.J., A.P., D.S., A.K., J.M., M.-P.W., K.D., C.A., I.M.L.), Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology (D.L., C.B.), Vienna General Hospital, Medical University of Vienna, Austria; and Institute for Biochemistry, Medical School, Justus-Liebig-University, Giessen, Germany (K.T.P.)
| | - Daniel Simon
- From the Division of Cardiology, Department of Internal Medicine II (A.M., S.A., T.S., T.H., J.J., A.P., D.S., A.K., J.M., M.-P.W., K.D., C.A., I.M.L.), Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology (D.L., C.B.), Vienna General Hospital, Medical University of Vienna, Austria; and Institute for Biochemistry, Medical School, Justus-Liebig-University, Giessen, Germany (K.T.P.)
| | - Daniela Laimer
- From the Division of Cardiology, Department of Internal Medicine II (A.M., S.A., T.S., T.H., J.J., A.P., D.S., A.K., J.M., M.-P.W., K.D., C.A., I.M.L.), Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology (D.L., C.B.), Vienna General Hospital, Medical University of Vienna, Austria; and Institute for Biochemistry, Medical School, Justus-Liebig-University, Giessen, Germany (K.T.P.)
| | - Christine Bangert
- From the Division of Cardiology, Department of Internal Medicine II (A.M., S.A., T.S., T.H., J.J., A.P., D.S., A.K., J.M., M.-P.W., K.D., C.A., I.M.L.), Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology (D.L., C.B.), Vienna General Hospital, Medical University of Vienna, Austria; and Institute for Biochemistry, Medical School, Justus-Liebig-University, Giessen, Germany (K.T.P.)
| | - Andreas Kammerlander
- From the Division of Cardiology, Department of Internal Medicine II (A.M., S.A., T.S., T.H., J.J., A.P., D.S., A.K., J.M., M.-P.W., K.D., C.A., I.M.L.), Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology (D.L., C.B.), Vienna General Hospital, Medical University of Vienna, Austria; and Institute for Biochemistry, Medical School, Justus-Liebig-University, Giessen, Germany (K.T.P.)
| | - Julia Mascherbauer
- From the Division of Cardiology, Department of Internal Medicine II (A.M., S.A., T.S., T.H., J.J., A.P., D.S., A.K., J.M., M.-P.W., K.D., C.A., I.M.L.), Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology (D.L., C.B.), Vienna General Hospital, Medical University of Vienna, Austria; and Institute for Biochemistry, Medical School, Justus-Liebig-University, Giessen, Germany (K.T.P.)
| | - Max-Paul Winter
- From the Division of Cardiology, Department of Internal Medicine II (A.M., S.A., T.S., T.H., J.J., A.P., D.S., A.K., J.M., M.-P.W., K.D., C.A., I.M.L.), Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology (D.L., C.B.), Vienna General Hospital, Medical University of Vienna, Austria; and Institute for Biochemistry, Medical School, Justus-Liebig-University, Giessen, Germany (K.T.P.)
| | - Klaus Distelmaier
- From the Division of Cardiology, Department of Internal Medicine II (A.M., S.A., T.S., T.H., J.J., A.P., D.S., A.K., J.M., M.-P.W., K.D., C.A., I.M.L.), Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology (D.L., C.B.), Vienna General Hospital, Medical University of Vienna, Austria; and Institute for Biochemistry, Medical School, Justus-Liebig-University, Giessen, Germany (K.T.P.)
| | - Christopher Adlbrecht
- From the Division of Cardiology, Department of Internal Medicine II (A.M., S.A., T.S., T.H., J.J., A.P., D.S., A.K., J.M., M.-P.W., K.D., C.A., I.M.L.), Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology (D.L., C.B.), Vienna General Hospital, Medical University of Vienna, Austria; and Institute for Biochemistry, Medical School, Justus-Liebig-University, Giessen, Germany (K.T.P.)
| | - Klaus T Preissner
- From the Division of Cardiology, Department of Internal Medicine II (A.M., S.A., T.S., T.H., J.J., A.P., D.S., A.K., J.M., M.-P.W., K.D., C.A., I.M.L.), Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology (D.L., C.B.), Vienna General Hospital, Medical University of Vienna, Austria; and Institute for Biochemistry, Medical School, Justus-Liebig-University, Giessen, Germany (K.T.P.)
| | - Irene M Lang
- From the Division of Cardiology, Department of Internal Medicine II (A.M., S.A., T.S., T.H., J.J., A.P., D.S., A.K., J.M., M.-P.W., K.D., C.A., I.M.L.), Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology (D.L., C.B.), Vienna General Hospital, Medical University of Vienna, Austria; and Institute for Biochemistry, Medical School, Justus-Liebig-University, Giessen, Germany (K.T.P.).
| |
Collapse
|
46
|
Abstract
In this Review we discuss data demonstrating recently recognized aspects of neutrophil homeostasis in the steady state, granulopoiesis in 'emergency' conditions and interactions of neutrophils with the adaptive immune system. We explore in vivo observations of the recruitment of neutrophils from blood to tissues in models of blood-borne infections versus bacterial invasion through epithelial linings. We examine data on novel aspects of the activation of NADPH oxidase and the heterogeneity of phagosomes and, finally, consider the importance of two neutrophil-derived biological agents: neutrophil extracellular traps and ectosomes.
Collapse
Affiliation(s)
- William M Nauseef
- Inflammation Program, Department of Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, and Veterans Administration Medical Center, Iowa City, Iowa, USA
| | - Niels Borregaard
- The Granulocyte Research Laboratory, Department of Hematology, National University Hospital, University of Copenhagen, Copenhagen, Denmark
| |
Collapse
|
47
|
Feng L, Liu X, Zhu W, Guo F, YingchunWu, Wang R, Chen K, Huang C, Li Y. Inhibition of human neutrophil elastase by pentacyclic triterpenes. PLoS One 2013; 8:e82794. [PMID: 24376583 PMCID: PMC3869726 DOI: 10.1371/journal.pone.0082794] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Accepted: 10/29/2013] [Indexed: 12/31/2022] Open
Abstract
SCOPE Inhibiting human neutrophil elastase (HNE) is a promising strategy for treating inflammatory lung diseases, such as H1N1 and SARS virus infections. The use of sivelestat, the only clinically registered synthesized HNE inhibitor, is largely limited by its risk of organ toxicity because it irreversibly inhibits HNE. Therefore, potent reversible HNE inhibitors are promising alternatives to sivelestat. METHODS AND RESULTS An in vitro HNE inhibition assay was employed to screen a series of triterpenes. Six pentacyclic triterpenes, but not tetracyclic triterpenes, significantly inhibited HNE. Of these pentacyclic triterpenes, ursolic acid exhibited the highest inhibitory potency (IC50 = 5.51 µM). The HNE inhibitory activity of ursolic acid was further verified using a mouse model of acute smoke-induced lung inflammation. The results of nuclear magnetic resonance and HNE inhibition kinetic analysis showed that the pentacyclic triterpenes competitively and reversibly inhibited HNE. Molecular docking experiments indicated that the molecular scaffold, 28-COOH, and a double bond at an appropriate location in the pentacyclic triterpenes are important for their inhibitory activity. CONCLUSION Our results provide insights into the effects of pentacyclic triterpenes on lung inflammatory actions through reversible inhibition of HNE activity.
Collapse
Affiliation(s)
- Li Feng
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiaoyu Liu
- Department of Biological Chemistry, Second Military Medicinal University, Shanghai, China
| | - Weiliang Zhu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Fujiang Guo
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - YingchunWu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Rui Wang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Kaixian Chen
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Cheng Huang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yiming Li
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| |
Collapse
|
48
|
Gunzer M. Traps and hyper inflammation - new ways that neutrophils promote or hinder survival. Br J Haematol 2013; 164:189-99. [PMID: 24138538 DOI: 10.1111/bjh.12608] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 09/11/2013] [Indexed: 01/13/2023]
Abstract
For a long time neutrophil granulocytes were considered simply as terminally differentiated cells with a limited life span and pathogen killing by phagocytosis and chemical toxicity being the sole mode of action. However, work during the last 10 years has started to change this view fundamentally. Modern understanding is that neutrophils have an enormous complexity of functions. This review discusses very recent findings on how neutrophils can control the spread of pathogens and mediate their killing by mechanisms such as formation of DNA nets, how they influence tumour growth and adaptive immune responses and how they manoeuvre inside the diverse compartments of the body. It will also describe how the normally protective functions of neutrophils can have deleterious consequences if they occur in an uncontrolled fashion. These exciting novel findings are likely to completely and permanently change our view of this central leucocyte population.
Collapse
Affiliation(s)
- Matthias Gunzer
- Institute for Experimental Immunology and Imaging, University Duisburg-Essen, University Hospital, Essen, Germany
| |
Collapse
|