1
|
Tang H, Gupta A, Morrisroe SA, Bao C, Schwantes-An TH, Gupta G, Liang S, Sun Y, Chu A, Luo A, Elangovan VR, Sangam S, Shi Y, Naidu SR, Jheng JR, Ciftci-Yilmaz S, Warfel NA, Hecker L, Mitra S, Coleman AW, Lutz KA, Pauciulo MW, Lai YC, Javaheri A, Dharmakumar R, Wu WH, Flaherty DP, Karnes JH, Breuils-Bonnet S, Boucherat O, Bonnet S, Yuan JXJ, Jacobson JR, Duarte JD, Nichols WC, Garcia JGN, Desai AA. Deficiency of the Deubiquitinase UCHL1 Attenuates Pulmonary Arterial Hypertension. Circulation 2024; 150:302-316. [PMID: 38695173 PMCID: PMC11262989 DOI: 10.1161/circulationaha.123.065304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 03/04/2024] [Indexed: 05/16/2024]
Abstract
BACKGROUND The ubiquitin-proteasome system regulates protein degradation and the development of pulmonary arterial hypertension (PAH), but knowledge about the role of deubiquitinating enzymes in this process is limited. UCHL1 (ubiquitin carboxyl-terminal hydrolase 1), a deubiquitinase, has been shown to reduce AKT1 (AKT serine/threonine kinase 1) degradation, resulting in higher levels. Given that AKT1 is pathological in pulmonary hypertension, we hypothesized that UCHL1 deficiency attenuates PAH development by means of reductions in AKT1. METHODS Tissues from animal pulmonary hypertension models as well as human pulmonary artery endothelial cells from patients with PAH exhibited increased vascular UCHL1 staining and protein expression. Exposure to LDN57444, a UCHL1-specific inhibitor, reduced human pulmonary artery endothelial cell and smooth muscle cell proliferation. Across 3 preclinical PAH models, LDN57444-exposed animals, Uchl1 knockout rats (Uchl1-/-), and conditional Uchl1 knockout mice (Tie2Cre-Uchl1fl/fl) demonstrated reduced right ventricular hypertrophy, right ventricular systolic pressures, and obliterative vascular remodeling. Lungs and pulmonary artery endothelial cells isolated from Uchl1-/- animals exhibited reduced total and activated Akt with increased ubiquitinated Akt levels. UCHL1-silenced human pulmonary artery endothelial cells displayed reduced lysine(K)63-linked and increased K48-linked AKT1 levels. RESULTS Supporting experimental data, we found that rs9321, a variant in a GC-enriched region of the UCHL1 gene, is associated with reduced methylation (n=5133), increased UCHL1 gene expression in lungs (n=815), and reduced cardiac index in patients (n=796). In addition, Gadd45α (an established demethylating gene) knockout mice (Gadd45α-/-) exhibited reduced lung vascular UCHL1 and AKT1 expression along with attenuated hypoxic pulmonary hypertension. CONCLUSIONS Our findings suggest that UCHL1 deficiency results in PAH attenuation by means of reduced AKT1, highlighting a novel therapeutic pathway in PAH.
Collapse
Affiliation(s)
- Haiyang Tang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Akash Gupta
- Department of Medicine and Arizona Health Sciences Center, Department of Cellular and Molecular Medicine, College of Medicine-Tucson, University of Arizona, Tucson, AZ
| | - Seth A. Morrisroe
- Krannert Cardiovascular Research Center, Department of Medicine, Indiana University, Indianapolis, IN
| | - Changlei Bao
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
- College of Veterinary Medicine, Northwest A & F University, Yangling, China
| | - Tae-Hwi Schwantes-An
- Department of Medical & Molecular Genetics, Indiana University, Indianapolis, IN
| | - Geetanjali Gupta
- Department of Medicine and Arizona Health Sciences Center, Department of Cellular and Molecular Medicine, College of Medicine-Tucson, University of Arizona, Tucson, AZ
| | - Shuxin Liang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Yanan Sun
- College of Veterinary Medicine, Northwest A & F University, Yangling, China
| | - Aiai Chu
- Department of Echocardiography, Gansu Provincial Hospital, Lanzhou, China
| | - Ang Luo
- College of Veterinary Medicine, Northwest A & F University, Yangling, China
- Institute of Zoology, Guangdong Academy of Sciences, Guangzhou, China
| | | | - Shreya Sangam
- Krannert Cardiovascular Research Center, Department of Medicine, Indiana University, Indianapolis, IN
| | - Yinan Shi
- Krannert Cardiovascular Research Center, Department of Medicine, Indiana University, Indianapolis, IN
- College of Veterinary Medicine, Northwest A & F University, Yangling, China
| | - Samisubbu R. Naidu
- Krannert Cardiovascular Research Center, Department of Medicine, Indiana University, Indianapolis, IN
| | - Jia-Rong Jheng
- Division of Pulmonary, Critical Care, Sleep and Occupational Medicine, Department of Medicine, Indiana University, Indianapolis, IN
| | - Sultan Ciftci-Yilmaz
- Krannert Cardiovascular Research Center, Department of Medicine, Indiana University, Indianapolis, IN
| | - Noel A. Warfel
- Department of Medicine and Arizona Health Sciences Center, Department of Cellular and Molecular Medicine, College of Medicine-Tucson, University of Arizona, Tucson, AZ
| | - Louise Hecker
- Department of Medicine, Emory University, and Atlanta VA Healthcare System, Atlanta, GA
| | - Sumegha Mitra
- Department of Obstetrics & Gynecology, Indiana University, Indianapolis, IN
| | - Anna W. Coleman
- Division of Human Genetics, Cincinnati Children’s Hospital Medical Center, Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Katie A. Lutz
- Division of Human Genetics, Cincinnati Children’s Hospital Medical Center, Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Michael W. Pauciulo
- Division of Human Genetics, Cincinnati Children’s Hospital Medical Center, Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Yen-Chun Lai
- Division of Pulmonary, Critical Care, Sleep and Occupational Medicine, Department of Medicine, Indiana University, Indianapolis, IN
| | - Ali Javaheri
- Department of Medicine, Washington University and John Cochran VA Hospital, St. Louis, MO
| | - Rohan Dharmakumar
- Krannert Cardiovascular Research Center, Department of Medicine, Indiana University, Indianapolis, IN
| | - Wen-Hui Wu
- Department of Medicine, Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Quebec, CA
| | - Daniel P Flaherty
- Department of Medicinal Chemistry and Molecular Pharmcacology, Purdue University, Lafayette, IN
| | - Jason H Karnes
- Department of Pharmacy Practice and Science, R Ken Coit College of Pharmacy, University of Arizona, Tucson, AZ
| | - Sandra Breuils-Bonnet
- Department of Medicine, Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Quebec, CA
| | - Olivier Boucherat
- Department of Medicine, Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Quebec, CA
| | - Sebastien Bonnet
- Department of Medicine, Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Quebec, CA
| | - Jason X-J Yuan
- Department of Medicine, University of California, San Diego, La Jolla, CA
| | | | - Julio D Duarte
- Center for Pharmacogenomics and Precision Medicine, Department of Pharmacotherapy and Translational Research, University of Florida, Gainesville, FL
| | - William C Nichols
- Division of Human Genetics, Cincinnati Children’s Hospital Medical Center, Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Joe GN Garcia
- The Herbert Wertheim UF Scripps Institute for Biomedical Innovation and Technology, University of Florida, Jupiter, FL
| | - Ankit A. Desai
- Krannert Cardiovascular Research Center, Department of Medicine, Indiana University, Indianapolis, IN
| |
Collapse
|
2
|
Epshtein Y, Mathew B, Chen W, Jacobson JR. UCHL1 Regulates Radiation Lung Injury via Sphingosine Kinase-1. Cells 2023; 12:2405. [PMID: 37830619 PMCID: PMC10572187 DOI: 10.3390/cells12192405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 09/28/2023] [Accepted: 10/02/2023] [Indexed: 10/14/2023] Open
Abstract
GADD45a is a gene we previously reported as a mediator of responses to acute lung injury. GADD45a-/- mice express decreased Akt and increased Akt ubiquitination due to the reduced expression of UCHL1 (ubiquitin c-terminal hydrolase L1), a deubiquitinating enzyme, while GADD45a-/- mice have increased their susceptibility to radiation-induced lung injury (RILI). Separately, we have reported a role for sphingolipids in RILI, evidenced by the increased RILI susceptibility of SphK1-/- (sphingosine kinase 1) mice. A mechanistic link between UCHL1 and sphingolipid signaling in RILI is suggested by the known polyubiquitination of SphK1. Thus, we hypothesized that the regulation of SphK1 ubiquitination by UCHL1 mediates RILI. Initially, human lung endothelial cells (EC) subjected to radiation demonstrated a significant upregulation of UCHL1 and SphK1. The ubiquitination of EC SphK1 after radiation was confirmed via the immunoprecipitation of SphK1 and Western blotting for ubiquitin. Further, EC transfected with siRNA specifically for UCHL1 or pretreated with LDN-5744, as a UCHL1 inhibitor, prior to radiation were noted to have decreased ubiquitinated SphK1 in both conditions. Further, the inhibition of UCHL1 attenuated sphingolipid-mediated EC barrier enhancement was measured by transendothelial electrical resistance. Finally, LDN pretreatment significantly augmented murine RILI severity. Our data support the fact that the regulation of SphK1 expression after radiation is mediated by UCHL1. The modulation of UCHL1 affecting sphingolipid signaling may represent a novel RILI therapeutic strategy.
Collapse
Affiliation(s)
| | | | | | - Jeffrey R. Jacobson
- Department of Medicine, Division of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, IL 60612, USA; (Y.E.); (W.C.)
| |
Collapse
|
3
|
The Wnt/β-catenin pathway regulates inflammation and apoptosis in ventilator-induced lung injury. Biosci Rep 2023; 43:232596. [PMID: 36825682 PMCID: PMC10011329 DOI: 10.1042/bsr20222429] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/10/2023] [Accepted: 02/14/2023] [Indexed: 02/25/2023] Open
Abstract
Ventilator-induced lung injury (VILI) may be caused by incorrect mechanical ventilation (MV), and its progression is mainly related to inflammatory reaction, apoptosis, and oxidative stress. The Wnt/β-catenin pathway can modulate inflammation and apoptosis; however, its role in VILI is unknown. This research aims to explore the role of the Wnt/β-catenin pathway in VILI. VILI models were established using rats and type II alveolar epithelial (ATII) cells. Glycogen synthase kinase 3β (GSK-3β), β-catenin, and cyclin D1 were determined using western blotting and immunofluorescence. Apoptosis of lung tissues was evaluated using TUNEL, flow cytometry, Bax, and Bcl2 protein. Interleukin-1β (IL-1β), interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α) were detected via enzyme-linked immunosorbent assay (ELISA). Lung pathological injury was evaluated through hematoxylin and eosin (H&E) staining. Lung permeability was evaluated by the ratio of dry to wet weight of lung tissue and the total protein level of bronchoalveolar lavage fluid (BALF). The results showed that GSK-3β expression was enhanced and β-catenin expression was diminished in lung tissue under MV. SB216763 increased β-catenin and cyclin D1 expression by inhibiting GSK-3β expression and inhibited the inflammatory response and apoptosis of lung, alleviated pulmonary edema and lung tissue permeability, and significantly mitigated lung injury. However, inhibition of β-catenin expression by MSAB attenuated the anti-inflammatory and antiapoptotic effects of SB216763 in VILI. Overall, the present study demonstrates that the Wnt/β-catenin pathway activation in MV may play an anti-inflammatory and antiapoptotic role, thereby alleviating lung injury and delaying VILI progression, which may be a key point of intervention in VILI.
Collapse
|
4
|
Lynn H, Sun X, Casanova NG, Bime C, Reyes Hernon V, Lanham C, Oita RC, Ramos N, Sun B, Coletta DK, Camp SM, Karnes JH, Ellis NA, Garcia JG. Linkage of NAMPT promoter variants to eNAMPT secretion, plasma eNAMPT levels, and ARDS severity. Ther Adv Respir Dis 2023; 17:17534666231181262. [PMID: 37477094 PMCID: PMC10363883 DOI: 10.1177/17534666231181262] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 05/25/2023] [Indexed: 07/22/2023] Open
Abstract
BACKGROUND AND OBJECTIVES eNAMPT (extracellular nicotinamide phosphoribosyltransferase), a novel DAMP and TLR4 ligand, is a druggable ARDS therapeutic target with NAMPT promoter SNPs associated with ARDS severity. This study assesses the previously unknown influence of NAMPT promoter SNPs on NAMPT transcription, eNAMPT secretion, and ARDS severity. METHODS AND DESIGN Human lung endothelial cells (ECs) transfected with NAMPT promoter luciferase reporters harboring SNPs G-1535A, A-1001 C, and C-948A, were exposed to LPS or LPS/18% cyclic stretch (CS) and NAMPT promoter activity, NAMPT protein expression, and secretion assessed. NAMPT genotypes and eNAMPT plasma measurements (Days 0/7) were assessed in two ARDS cohorts (DISCOVERY n = 428; ALVEOLI n = 103). RESULTS Comparisons of minor allelic frequency (MAF) in both ARDS cohorts with the 1000 Human Genome Project revealed the G-1535A and C-948A SNPs to be significantly associated with ARDS in Blacks compared with controls and trended toward significance in non-Hispanic Whites. LPS-challenged and LPS/18% CS-challenged EC harboring the -1535G wild-type allele exhibited significantly increased NAMPT promoter activity (compared with -1535A) with the -1535G/-948A diplotype exhibiting significantly increased NAMPT promoter activity, NAMPT protein expression, and eNAMPT secretion compared with the -1535A/-948 C diplotype. Highly significant increases in Day 0 eNAMPT plasma values were observed in both DISCOVERY and ALVEOLI ARDS cohorts (compared with healthy controls). Among subjects surviving to Day 7, Day 7 eNAMPT values were significantly increased in Day 28 non-survivors versus survivors. The protective -1535A SNP allele drove -1535A/-1001A and -1535A/-948 C diplotypes that confer significantly reduced ARDS risk (compared with -1535G, -1535G/-1001 C, -1535G/-948A), particularly in Black ARDS subjects. NAMPT SNP comparisons within the two ARDS cohorts did not identify significant association with either APACHE III scores or plasma eNAMPT levels. CONCLUSION NAMPT SNPs influence promoter activity, eNAMPT protein expression/secretion, plasma eNAMPT levels, and ARDS severity. NAMPT genotypes are a potential tool for stratification in eNAMPT-focused ARDS clinical trials.
Collapse
Affiliation(s)
- Heather Lynn
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Xiaoguang Sun
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Nancy G. Casanova
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Christian Bime
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | | | - Clayton Lanham
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Radu C. Oita
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Nikolas Ramos
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Belinda Sun
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Dawn K. Coletta
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Sara M. Camp
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Jason H. Karnes
- College of Pharmacy, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Nathan A. Ellis
- College of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Joe G.N. Garcia
- Dr. Herbert A. Wertheim Professor of Inflammation Science, Director, Center for Inflammation Science and Systems Medicine, University of Florida Scripps Research Institute, Jupiter, FL 33458, USA
| |
Collapse
|
5
|
Tong H, Wang L, Shi J, Jin H, Zhang K, Bao Y, Wu Y, Cheng Y, Liu P, Wang C. Upregulated miR-322-5p regulates cell cycle and promotes cell proliferation and apoptosis by directly targeting Wee1 in mice liver injury. Cell Cycle 2022; 21:2635-2650. [PMID: 35957539 PMCID: PMC9704413 DOI: 10.1080/15384101.2022.2108128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 06/15/2022] [Accepted: 07/27/2022] [Indexed: 01/09/2023] Open
Abstract
Liver injury from any number of causes (e.g. chemical material, drugs and diet, viral infection) is a global health problem, and its mechanism is not clearly understood. MicroRNAs (miRNAs) expression profiling is gaining popularity because miRNAs, as key regulators in gene expression networks, can influence many biological processes and have also shown promise as biomarkers for disease. Previous studies reported the regulation effects of miRNAs in liver injury, whereas function and molecular mechanisms of miR-322-5p were still unclear. Therefore, our study focused on the biological role of miR-322-5p in carbon tetrachloride (CCl4)-induced liver injury proliferation, apoptosis, and cell cycle. A mouse model of CCl4-induced liver injury was established, and the transcriptomes and miRNAs transcriptomes of 2d and 5d liver tissues after injury were sequenced. The expression of miR-322-5p and the cell cycle genes were detected in liver tissues and Hepa1-6 cell line by miRNA RT-PCR, qRT-PCR. The effects of miR-322-5p on liver cell proliferation, cell cycle and apoptosis were evaluated using MTS assays and flow cytometry analysis. The relationship between miR-322-5p and Wee1 was predicted and confirmed by bioinformatics analysis and a dual luciferase reporter assay. Functional experiments, including an MTS assay and flow cytometric analysis, were performed to study the effects of Wee1. MiR-322-5p was upregulated in injury liver tissues, and downregulated miR-322-5p was proved to inhibit proliferation, apoptosis and arrest cell cycle at G2/M in vitro. The dual-luciferase reporter assay results indicated that miR-322-5p has a binding site at position 285 in the Wee1 3´UTR. The effects of miR-322-5p in proliferation and cell cycle regulation can be abolished by Wee1 through rescue experiments. By directly targeting Wee1 influenced the expression of several cell cycle factors, including Cyclin dependent kinase 1 (Cdk1), cyclin B1 (Ccnb1) and Cell division cyclin 25C (Cdc25C). MiR-322-5p may function as a suppressive factor by negatively controlling Wee1, thus, highlighting the potential role of miR-322-5p as a therapeutic target for liver injury.Abbreviations: ALT: Alanine aminotransferase; AST: Aspartate aminotransferase; GSH: Glutathione, γ-glutamyl cysteinel + glycine; CCl4: Carbon tetrachloride; HE: Haematoxylin and eosin; KEGG: Kyoto Encyclopedia of Genes and Genomes.
Collapse
Affiliation(s)
- He Tong
- School of Life Science, Inner Mongolia University, Hohhot, Inner, China
| | - Li Wang
- School of Life Science, Inner Mongolia University, Hohhot, Inner, China
- School of Basic Medicine, Inner Mongolia Medical University, Hohhot, Inner, China
| | - Jing Shi
- School of Life Science, Inner Mongolia University, Hohhot, Inner, China
| | - Haowei Jin
- School of Life Science, Inner Mongolia University, Hohhot, Inner, China
| | - Kefan Zhang
- School of Life Science, Inner Mongolia University, Hohhot, Inner, China
| | - Yulong Bao
- School of Basic Medicine, Inner Mongolia Medical University, Hohhot, Inner, China
| | - Yongshuai Wu
- School of Life Science, Inner Mongolia University, Hohhot, Inner, China
| | - Yipeng Cheng
- School of Life Science, Inner Mongolia University, Hohhot, Inner, China
| | - Pengxia Liu
- School of Life Science, Inner Mongolia University, Hohhot, Inner, China
| | - Changshan Wang
- School of Life Science, Inner Mongolia University, Hohhot, Inner, China
- Affiliated Hospital, Inner Mongolia University for the Nationalities, Tongliao, China
| |
Collapse
|
6
|
Shin H, Morty RE, Sucre JM, Negretti NM, Markmann M, Hossain H, Krauss-Etschmann S, Dehmel S, Hilgendorff A. Reference genes for the developing mouse lung under consideration of biological, technical and experimental confounders. Sci Rep 2022; 12:17679. [PMID: 36271035 PMCID: PMC9587035 DOI: 10.1038/s41598-022-19071-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 08/24/2022] [Indexed: 01/18/2023] Open
Abstract
For gene expression analysis, the raw data obtained from RT-qPCR are preferably normalized to reference genes, which should be constantly expressed regardless of experimental conditions. Selection of reference genes is particularly challenging for the developing lung because of the complex transcriptional and epigenetic regulation of genes during organ maturation and injury repair. To date, there are only limited experimental data addressing reliable reference genes for this biological circumstance. In this study, we evaluated reference genes for the lung in neonatal C57BL/6 mice under consideration of biological, technical and experimental conditions. For that, we thoroughly selected candidates from commonly used reference genes side-by-side with novel ones by analyzing publicly available microarray datasets. We performed RT-qPCR of the selected candidate genes and analyzed their expression variability using GeNorm and Normfinder. Cell-specific expression of the candidate genes was analyzed using our own single-cell RNA-sequencing data from the developing mouse lung. Depending on the investigated conditions, i.e., developmental stages, sex, RNA quality, experimental condition (hyperoxia) and cell types, distinct candidate genes demonstrated stable expression confirming their eligibility as reliable reference genes. Our results provide valuable information for the selection of proper reference genes in studies investigating the neonatal mouse lung.
Collapse
Affiliation(s)
- H. Shin
- grid.4567.00000 0004 0483 2525Institute for Lung Biology and Disease and Comprehensive Pneumology Center, Helmholtz Zentrum München, Member of German Center for Lung Research (DZL), Munich, Germany
| | - R. E. Morty
- grid.5253.10000 0001 0328 4908Department of Translational Pulmonology, University Hospital Heidelberg, Heidelberg, Germany ,Translational Lung Research Center, member of the German Center for Lung Research (DZL), Heidelberg, Germany
| | - J. M. Sucre
- grid.412807.80000 0004 1936 9916Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN USA
| | - N. M. Negretti
- grid.412807.80000 0004 1936 9916Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN USA
| | - M. Markmann
- grid.8664.c0000 0001 2165 8627Department of Anesthesiology, Intensive Care Medicine and Pain Therapy, Justus-Liebig-University, Giessen, Germany
| | - H. Hossain
- grid.440273.6Institute of Laboratory Medicine and Microbiology, Klinikum St. Marien Amberg and Kliniken Nordoberpfalz AG, Weiden, Germany
| | - S. Krauss-Etschmann
- grid.4567.00000 0004 0483 2525Institute for Lung Biology and Disease and Comprehensive Pneumology Center, Helmholtz Zentrum München, Member of German Center for Lung Research (DZL), Munich, Germany ,grid.452624.3Present Address: Priority Area Chronic Lung Diseases, Early Life Origins of Chronic Lung Disease, Research Center Borstel, Leibniz Lung Center, German Center for Lung Research (DZL) and the Airway Research Center North (ARCN), Borstel, Germany ,grid.9764.c0000 0001 2153 9986Present Address: Institute for Experimental Medicine, Christian Albrechts University, German Center for Lung Research (DZL) and the Airway Research Center North (ARCN), Kiel, Germany
| | - S. Dehmel
- grid.4567.00000 0004 0483 2525Institute for Lung Biology and Disease and Comprehensive Pneumology Center, Helmholtz Zentrum München, Member of German Center for Lung Research (DZL), Munich, Germany ,grid.4567.00000 0004 0483 2525Present Address: Strategy, Programs, Resources (SPR), Helmholtz Zentrum München, Munich, Germany
| | - A. Hilgendorff
- grid.4567.00000 0004 0483 2525Institute for Lung Biology and Disease and Comprehensive Pneumology Center, Helmholtz Zentrum München, Member of German Center for Lung Research (DZL), Munich, Germany ,grid.5252.00000 0004 1936 973XCenter for Comprehensive Developmental Care (CDeCLMU), University Hospital, Ludwig-Maximilians-University, Munich, Germany
| |
Collapse
|
7
|
Vellichirammal NN, Sethi S, Pandey S, Singh J, Wise SY, Carpenter AD, Fatanmi OO, Guda C, Singh VK. Lung transcriptome of nonhuman primates exposed to total- and partial-body irradiation. MOLECULAR THERAPY. NUCLEIC ACIDS 2022; 29:584-598. [PMID: 36090752 PMCID: PMC9418744 DOI: 10.1016/j.omtn.2022.08.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 08/01/2022] [Indexed: 12/25/2022]
Abstract
The focus of radiation biodosimetry has changed recently, and a paradigm shift for using molecular technologies of omic platforms in addition to cytogenetic techniques has been observed. In our study, we have used a nonhuman primate model to investigate the impact of a supralethal dose of 12 Gy radiation on alterations in the lung transcriptome. We used 6 healthy and 32 irradiated animal samples to delineate radiation-induced changes. We also used a medical countermeasure, γ-tocotrienol (GT3), to observe any changes. We demonstrate significant radiation-induced changes in the lung transcriptome for total-body irradiation (TBI) and partial-body irradiation (PBI). However, no major influence of GT3 on radiation was noted in either comparison. Several common signaling pathways, including PI3K/AKT, GADD45, and p53, were upregulated in both exposures. TBI activated DNA-damage-related pathways in the lungs, whereas PTEN signaling was activated after PBI. Our study highlights the various transcriptional profiles associated with γ- and X-ray exposures, and the associated pathways include LXR/RXR activation in TBI, whereas pulmonary wound-healing and pulmonary fibrosis signaling was repressed in PBI. Our study provides important insights into the molecular pathways associated with irradiation that can be further investigated for biomarker discovery.
Collapse
Affiliation(s)
| | - Sahil Sethi
- Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Sanjit Pandey
- Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Jatinder Singh
- Division of Radioprotectants, Department of Pharmacology and Molecular Therapeutics, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
- Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Stephen Y. Wise
- Division of Radioprotectants, Department of Pharmacology and Molecular Therapeutics, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
- Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Alana D. Carpenter
- Division of Radioprotectants, Department of Pharmacology and Molecular Therapeutics, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
- Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Oluseyi O. Fatanmi
- Division of Radioprotectants, Department of Pharmacology and Molecular Therapeutics, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
- Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Chittibabu Guda
- Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Vijay K. Singh
- Division of Radioprotectants, Department of Pharmacology and Molecular Therapeutics, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
- Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| |
Collapse
|
8
|
Belvitch P, Casanova N, Sun X, Camp SM, Sammani S, Brown ME, Mascarhenas J, Lynn H, Adyshev D, Siegler J, Desai A, Seyed-Saadat L, Rizzo A, Bime C, Shekhawat GS, Dravid VP, Reilly JP, Jones TK, Feng R, Letsiou E, Meyer NJ, Ellis N, Garcia JGN, Dudek SM. A cortactin CTTN coding SNP contributes to lung vascular permeability and inflammatory disease severity in African descent subjects. Transl Res 2022; 244:56-74. [PMID: 35181549 PMCID: PMC9119916 DOI: 10.1016/j.trsl.2022.02.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 01/20/2022] [Accepted: 02/10/2022] [Indexed: 12/19/2022]
Abstract
The cortactin gene (CTTN), encoding an actin-binding protein critically involved in cytoskeletal dynamics and endothelial cell (EC) barrier integrity, contains single nucleotide polymorphisms (SNPs) associated with severe asthma in Black patients. As loss of lung EC integrity is a major driver of mortality in the Acute Respiratory Distress Syndrome (ARDS), sepsis, and the acute chest syndrome (ACS), we speculated CTTN SNPs that alter EC barrier function will associate with clinical outcomes from these types of conditions in Black patients. In case-control studies, evaluation of a nonsynonymous CTTN coding SNP Ser484Asn (rs56162978, G/A) in a severe sepsis cohort (725 Black subjects) revealed significant association with increased risk of sepsis mortality. In a separate cohort of sickle cell disease (SCD) subjects with and without ACS (177 SCD Black subjects), significantly increased risk of ACS and increased ACS severity (need for mechanical ventilation) was observed in carriers of the A allele. Human lung EC expressing the cortactin S484N transgene exhibited: (i) delayed EC barrier recovery following thrombin-induced permeability; (ii) reduced levels of critical Tyr486 cortactin phosphorylation; (iii) inhibited binding to the cytoskeletal regulator, nmMLCK; and (iv) attenuated EC barrier-promoting lamellipodia dynamics and biophysical responses. ARDS-challenged Cttn+/- heterozygous mice exhibited increased lung vascular permeability (compared to wild-type mice) which was significantly attenuated by IV delivery of liposomes encargoed with CTTN WT transgene but not by CTTN S484N transgene. In summary, these studies suggest that the CTTN S484N coding SNP contributes to severity of inflammatory injury in Black patients, potentially via delayed vascular barrier restoration.
Collapse
Affiliation(s)
- Patrick Belvitch
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Nancy Casanova
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Xiaoguang Sun
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Sara M Camp
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Saad Sammani
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | | | - Joseph Mascarhenas
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Heather Lynn
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Djanybek Adyshev
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Jessica Siegler
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Ankit Desai
- Department of Medicine, Indiana University, Indianapolis, Indiana
| | - Laleh Seyed-Saadat
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Alicia Rizzo
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Christian Bime
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Gajendra S Shekhawat
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois
| | - Vinayak P Dravid
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois
| | - John P Reilly
- Division of Pulmonary, Allergy, and Critical Care Medicine and Lung Biology Institute, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Tiffanie K Jones
- Division of Pulmonary, Allergy, and Critical Care Medicine and Lung Biology Institute, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Rui Feng
- Department of Biostatistics, Epidemiology, and Informatics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Eleftheria Letsiou
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Nuala J Meyer
- Division of Pulmonary, Allergy, and Critical Care Medicine and Lung Biology Institute, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Nathan Ellis
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Joe G N Garcia
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Steven M Dudek
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois.
| |
Collapse
|
9
|
Cai Q, Jin Y, Jia Z, Liu Z. Paraquat Induces Lung Injury via miR-199-Mediated SET in a Mouse Model. Front Pharmacol 2022; 13:856441. [PMID: 35431948 PMCID: PMC9011139 DOI: 10.3389/fphar.2022.856441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 02/21/2022] [Indexed: 11/13/2022] Open
Abstract
Objective: To explore the molecular mechanism of lung injury caused by paraquat (PQ) poisoning by investigating miR-199-mediated SET.Methods: A paraquat poisoning model was established in C57BL/6 male mice via intraperitoneal injection of paraquat. The mice were transfected with miR-199 siRNA and or mimic. After 14 days of treatment, pathophysiological changes of the lung were observed and lung tissue was analyzed via Hematoxylin-Eosin staining. The levels of miR-199, SETs, surfactant protein SP-A and SP-B, and inflammatory and oxidative factors were analyzed by qPCR, Western Blot, and ELISA kits.Results: A acute lung-injury (ALI) model was established using PQ treatment and confirmed with edema of pulmonary endothelium with low electronic density of endothelial cytoplasm, presence of protein-rich fluid, and numerous erythrocytes in alveolar space, concentric figures of damaged tubular myelin, alveolar destruction, and increase in inflammatory cell numbers. Compared with the control group, miR-199 and SET levels were reduced in the PQ-treated group. miR-199 siRNA increased the SET level, inflammatory and oxidative levels, and reduced the levels of SP-A and SP-B, and miR-199 mimic reduced the SET level, inflammatory and oxidative levels, and increased the levels of SP-A and SP-B. PQ treatment reduced miR-199 level.Conclusion: Paraquat induces ALI by affecting miR-199-mediated SET.
Collapse
|
10
|
Bermudez T, Sammani S, Song JH, Hernon VR, Kempf CL, Garcia AN, Burt J, Hufford M, Camp SM, Cress AE, Desai AA, Natarajan V, Jacobson JR, Dudek SM, Cancio LC, Alvarez J, Rafikov R, Li Y, Zhang DD, Casanova NG, Bime C, Garcia JGN. eNAMPT neutralization reduces preclinical ARDS severity via rectified NFkB and Akt/mTORC2 signaling. Sci Rep 2022; 12:696. [PMID: 35027578 PMCID: PMC8758770 DOI: 10.1038/s41598-021-04444-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 12/22/2021] [Indexed: 12/18/2022] Open
Abstract
Despite encouraging preclinical data, therapies to reduce ARDS mortality remains a globally unmet need, including during the COVID-19 pandemic. We previously identified extracellular nicotinamide phosphoribosyltransferase (eNAMPT) as a novel damage-associated molecular pattern protein (DAMP) via TLR4 ligation which regulates inflammatory cascade activation. eNAMPT is tightly linked to human ARDS by biomarker and genotyping studies in ARDS subjects. We now hypothesize that an eNAMPT-neutralizing mAb will significantly reduce the severity of ARDS lung inflammatory lung injury in diverse preclinical rat and porcine models. Sprague Dawley rats received eNAMPT mAb intravenously following exposure to intratracheal lipopolysaccharide (LPS) or to a traumatic blast (125 kPa) but prior to initiation of ventilator-induced lung injury (VILI) (4 h). Yucatan minipigs received intravenous eNAMPT mAb 2 h after initiation of septic shock and VILI (12 h). Each rat/porcine ARDS/VILI model was strongly associated with evidence of severe inflammatory lung injury with NFkB pathway activation and marked dysregulation of the Akt/mTORC2 signaling pathway. eNAMPT neutralization dramatically reduced inflammatory indices and the severity of lung injury in each rat/porcine ARDS/VILI model (~ 50% reduction) including reduction in serum lactate, and plasma levels of eNAMPT, IL-6, TNFα and Ang-2. The eNAMPT mAb further rectified NFkB pathway activation and preserved the Akt/mTORC2 signaling pathway. These results strongly support targeting the eNAMPT/TLR4 inflammatory pathway as a potential ARDS strategy to reduce inflammatory lung injury and ARDS mortality.
Collapse
Affiliation(s)
- Tadeo Bermudez
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Saad Sammani
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Jin H Song
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Vivian Reyes Hernon
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Carrie L Kempf
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Alexander N Garcia
- Department of Radiation Oncology, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Jessica Burt
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Matthew Hufford
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Sara M Camp
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Anne E Cress
- Department of Cellular and Molecular Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Ankit A Desai
- Department of Medicine, Indiana University, Indianapolis, IN, USA
| | | | - Jeffrey R Jacobson
- Department of Medicine, University of Illinois Chicago, Chicago, IL, USA
| | - Steven M Dudek
- Department of Medicine, University of Illinois Chicago, Chicago, IL, USA
| | | | - Julie Alvarez
- Institute of Surgical Research, San Antonio, TX, USA
| | - Ruslan Rafikov
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Yansong Li
- Institute of Surgical Research, San Antonio, TX, USA
| | - Donna D Zhang
- College of Pharmacy, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Nancy G Casanova
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Christian Bime
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Joe G N Garcia
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA.
| |
Collapse
|
11
|
Jacobson JR. Sphingolipids as a Novel Therapeutic Target in Radiation-Induced Lung Injury. Cell Biochem Biophys 2021; 79:509-516. [PMID: 34370281 PMCID: PMC8551086 DOI: 10.1007/s12013-021-01022-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 07/08/2021] [Indexed: 12/25/2022]
Abstract
Radiation-induced lung injury (RILI) is a potential complication of thoracic radiotherapy that can result in pneumonitis or pulmonary fibrosis and is associated with significant morbidity and mortality. The pathobiology of RILI is complex and includes the generation of free radicals and DNA damage that precipitate oxidative stress, endothelial cell (EC), and epithelial cell injury and inflammation. While the cellular events involved continue to be elucidated and characterized, targeted and effective therapies for RILI remain elusive. Sphingolipids are known to mediate EC function including many of the cell signaling events associated with the elaboration of RILI. Sphingosine-1-phosphate (S1P) and S1P analogs enhance EC barrier function in vitro and have demonstrated significant protective effects in vivo in a variety of acute lung injury models including RILI. Similarly, statin drugs that have pleiotropic effects that include upregulation of EC S1P receptor 1 (S1PR1) have been found to be strongly protective in a small animal RILI model. Thus, targeting of EC sphingosine signaling, either directly or indirectly, to augment EC function and thereby attenuate EC permeability and inflammatory responses, represents a novel and promising therapeutic strategy for the prevention or treatment of RILI.
Collapse
Affiliation(s)
- Jeffrey R Jacobson
- Department of Medicine, Division of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, IL, USA.
| |
Collapse
|
12
|
Cassatt DR, Gorovets A, Karimi-Shah B, Roberts R, Price PW, Satyamitra MM, Todd N, Wang SJ, Marzella L. A Trans-Agency Workshop on the Pathophysiology of Radiation-Induced Lung Injury. Radiat Res 2021; 197:415-433. [PMID: 34342637 DOI: 10.1667/rade-21-00127.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 07/21/2021] [Indexed: 12/15/2022]
Abstract
Research and development of medical countermeasures (MCMs) for radiation-induced lung injury relies on the availability of animal models with well-characterized pathophysiology, allowing effective bridging to humans. To develop useful animal models, it is important to understand the clinical condition, advantages and limitations of individual models, and how to properly apply these models to demonstrate MCM efficacy. On March 20, 2019, a meeting sponsored by the Radiation and Nuclear Countermeasures Program (RNCP) within the National Institute of Allergy and Infectious Diseases (NIAID) brought together medical, scientific and regulatory communities, including academic and industry subject matter experts, and government stakeholders from the Food and Drug Administration (FDA) and the Biomedical Advanced Research and Development Authority (BARDA), to identify critical research gaps, discuss current clinical practices for various forms of pulmonary damage, and consider available animal models for radiation-induced lung injury.
Collapse
Affiliation(s)
- David R Cassatt
- Radiation and Nuclear Countermeasures Program (RNCP), National Institutes of Health (NIH), Rockville, Maryland
| | - Alex Gorovets
- Center for Drug Evaluation and Research (CDER), Food and Drug Administration (FDA), Silver Spring, Maryland
| | - Banu Karimi-Shah
- Center for Drug Evaluation and Research (CDER), Food and Drug Administration (FDA), Silver Spring, Maryland
| | - Rosemary Roberts
- Center for Drug Evaluation and Research (CDER), Food and Drug Administration (FDA), Silver Spring, Maryland
| | - Paul W Price
- Office of Regulatory Affairs, Division of Allergy, Immunology and Transplantation (DAIT), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Rockville, Maryland
| | - Merriline M Satyamitra
- Radiation and Nuclear Countermeasures Program (RNCP), National Institutes of Health (NIH), Rockville, Maryland
| | - Nushin Todd
- Center for Drug Evaluation and Research (CDER), Food and Drug Administration (FDA), Silver Spring, Maryland
| | - Sue-Jane Wang
- Center for Drug Evaluation and Research (CDER), Food and Drug Administration (FDA), Silver Spring, Maryland
| | - Libero Marzella
- Center for Drug Evaluation and Research (CDER), Food and Drug Administration (FDA), Silver Spring, Maryland
| |
Collapse
|
13
|
Ehmsen JT, Kawaguchi R, Kaval D, Johnson AE, Nachun D, Coppola G, Höke A. GADD45A is a protective modifier of neurogenic skeletal muscle atrophy. JCI Insight 2021; 6:e149381. [PMID: 34128833 PMCID: PMC8410074 DOI: 10.1172/jci.insight.149381] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 05/26/2021] [Indexed: 12/14/2022] Open
Abstract
Neurogenic muscle atrophy is the loss of skeletal muscle mass and function that occurs with nerve injury and in denervating diseases, such as amyotrophic lateral sclerosis. Aside from prompt restoration of innervation and exercise where feasible, there are currently no effective strategies for maintaining skeletal muscle mass in the setting of denervation. We conducted a longitudinal analysis of gene expression changes occurring in atrophying skeletal muscle and identified growth arrest and DNA damage-inducible A (Gadd45a) as a gene that shows one of the earliest and most sustained increases in expression in skeletal muscle after denervation. We evaluated the role of this induction using genetic mouse models and found that mice lacking GADD45A showed accelerated and exacerbated neurogenic muscle atrophy, as well as loss of fiber type identity. Our genetic analyses demonstrate that, rather than directly contributing to muscle atrophy as proposed in earlier studies, GADD45A induction likely represents a protective negative feedback response to denervation. Establishing the downstream effectors that mediate this protective effect and the pathways they participate in may yield new opportunities to modify the course of muscle atrophy.
Collapse
Affiliation(s)
- Jeffrey T Ehmsen
- Neuromuscular Division, Department of Neurology, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
| | - Riki Kawaguchi
- Department of Neurology and Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Damlanur Kaval
- Neuromuscular Division, Department of Neurology, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
| | - Anna E Johnson
- Neuromuscular Division, Department of Neurology, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
| | - Daniel Nachun
- Department of Neurology and Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Giovanni Coppola
- Department of Neurology and Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Ahmet Höke
- Neuromuscular Division, Department of Neurology, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
| |
Collapse
|
14
|
Quijada H, Bermudez T, Kempf CL, Valera DG, Garcia AN, Camp SM, Song JH, Franco E, Burt JK, Sun B, Mascarenhas JB, Burns K, Gaber A, Oita RC, Reyes Hernon V, Barber C, Moreno-Vinasco L, Sun X, Cress AE, Martin D, Liu Z, Desai AA, Natarajan V, Jacobson JR, Dudek SM, Bime C, Sammani S, Garcia JG. Endothelial eNAMPT amplifies pre-clinical acute lung injury: efficacy of an eNAMPT-neutralising monoclonal antibody. Eur Respir J 2021; 57:2002536. [PMID: 33243842 PMCID: PMC8100338 DOI: 10.1183/13993003.02536-2020] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 11/05/2020] [Indexed: 12/11/2022]
Abstract
RATIONALE The severe acute respiratory syndrome coronavirus 2/coronavirus disease 2019 pandemic has highlighted the serious unmet need for effective therapies that reduce acute respiratory distress syndrome (ARDS) mortality. We explored whether extracellular nicotinamide phosphoribosyltransferase (eNAMPT), a ligand for Toll-like receptor (TLR)4 and a master regulator of innate immunity and inflammation, is a potential ARDS therapeutic target. METHODS Wild-type C57BL/6J or endothelial cell (EC)-cNAMPT -/- knockout mice (targeted EC NAMPT deletion) were exposed to either a lipopolysaccharide (LPS)-induced ("one-hit") or a combined LPS/ventilator ("two-hit")-induced acute inflammatory lung injury model. A NAMPT-specific monoclonal antibody (mAb) imaging probe (99mTc-ProNamptor) was used to detect NAMPT expression in lung tissues. Either an eNAMPT-neutralising goat polyclonal antibody (pAb) or a humanised monoclonal antibody (ALT-100 mAb) were used in vitro and in vivo. RESULTS Immunohistochemical, biochemical and imaging studies validated time-dependent increases in NAMPT lung tissue expression in both pre-clinical ARDS models. Intravenous delivery of either eNAMPT-neutralising pAb or mAb significantly attenuated inflammatory lung injury (haematoxylin and eosin staining, bronchoalveolar lavage (BAL) protein, BAL polymorphonuclear cells, plasma interleukin-6) in both pre-clinical models. In vitro human lung EC studies demonstrated eNAMPT-neutralising antibodies (pAb, mAb) to strongly abrogate eNAMPT-induced TLR4 pathway activation and EC barrier disruption. In vivo studies in wild-type and EC-cNAMPT -/- mice confirmed a highly significant contribution of EC-derived NAMPT to the severity of inflammatory lung injury in both pre-clinical ARDS models. CONCLUSIONS These findings highlight both the role of EC-derived eNAMPT and the potential for biologic targeting of the eNAMPT/TLR4 inflammatory pathway. In combination with predictive eNAMPT biomarker and NAMPT genotyping assays, this offers the opportunity to identify high-risk ARDS subjects for delivery of personalised medicine.
Collapse
Affiliation(s)
- Hector Quijada
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
- Co-first authors
| | - Tadeo Bermudez
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
- Co-first authors
| | - Carrie L. Kempf
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Daniel G. Valera
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Alexander N. Garcia
- Dept of Radiation Oncology, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Sara M. Camp
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Jin H. Song
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Evelyn Franco
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Jessica K. Burt
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Belinda Sun
- Dept of Pathology, University of Arizona Health Sciences, Tucson, AZ, USA
| | | | - Kimberlie Burns
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Amir Gaber
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Radu C. Oita
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | | | - Christy Barber
- Dept of Medical Imaging, University of Arizona Health Sciences, Tucson, AZ, USA
| | | | - Xiaoguang Sun
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Anne E. Cress
- Dept of Cellular and Molecular Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Diego Martin
- Houston Methodist Hospital Research Institute, Houston, TX, USA
| | - Zhonglin Liu
- Dept of Medical Imaging, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Ankit A. Desai
- Dept of Medicine, Indiana University, Indianapolis IN, USA
| | | | | | - Steven M. Dudek
- Dept of Medicine, University of Illinois Chicago, Chicago, IL, USA
| | - Christian Bime
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
| | - Saad Sammani
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
- Co-senior authors
| | - Joe G.N. Garcia
- Dept of Medicine, University of Arizona Health Sciences, Tucson, AZ, USA
- Co-senior authors
| |
Collapse
|
15
|
Nain Z, Rana HK, Liò P, Islam SMS, Summers MA, Moni MA. Pathogenetic profiling of COVID-19 and SARS-like viruses. Brief Bioinform 2021; 22:1175-1196. [PMID: 32778874 PMCID: PMC7454314 DOI: 10.1093/bib/bbaa173] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 06/23/2020] [Accepted: 07/08/2020] [Indexed: 12/15/2022] Open
Abstract
The novel coronavirus (2019-nCoV) has recently emerged, causing COVID-19 outbreaks and significant societal/global disruption. Importantly, COVID-19 infection resembles SARS-like complications. However, the lack of knowledge about the underlying genetic mechanisms of COVID-19 warrants the development of prospective control measures. In this study, we employed whole-genome alignment and digital DNA-DNA hybridization analyses to assess genomic linkage between 2019-nCoV and other coronaviruses. To understand the pathogenetic behavior of 2019-nCoV, we compared gene expression datasets of viral infections closest to 2019-nCoV with four COVID-19 clinical presentations followed by functional enrichment of shared dysregulated genes. Potential chemical antagonists were also identified using protein-chemical interaction analysis. Based on phylogram analysis, the 2019-nCoV was found genetically closest to SARS-CoVs. In addition, we identified 562 upregulated and 738 downregulated genes (adj. P ≤ 0.05) with SARS-CoV infection. Among the dysregulated genes, SARS-CoV shared ≤19 upregulated and ≤22 downregulated genes with each of different COVID-19 complications. Notably, upregulation of BCL6 and PFKFB3 genes was common to SARS-CoV, pneumonia and severe acute respiratory syndrome, while they shared CRIP2, NSG1 and TNFRSF21 genes in downregulation. Besides, 14 genes were common to different SARS-CoV comorbidities that might influence COVID-19 disease. We also observed similarities in pathways that can lead to COVID-19 and SARS-CoV diseases. Finally, protein-chemical interactions suggest cyclosporine, resveratrol and quercetin as promising drug candidates against COVID-19 as well as other SARS-like viral infections. The pathogenetic analyses, along with identified biomarkers, signaling pathways and chemical antagonists, could prove useful for novel drug development in the fight against the current global 2019-nCoV pandemic.
Collapse
Affiliation(s)
- Zulkar Nain
- Department of Genetic Engineering and Biotechnology, East West University, Bangladesh
| | - Humayan Kabir Rana
- Department of Computer Science and Engineering, Green University of Bangladesh
| | - Pietro Liò
- Artificial Intelligence Group at the University of Cambridge
| | | | | | | |
Collapse
|
16
|
Awasthi S, Rahman N, Rui B, Kumar G, Awasthi V, Breshears M, Kosanke S. Lung and general health effects of Toll-like receptor-4 (TLR4)-interacting SPA4 peptide. BMC Pulm Med 2020; 20:179. [PMID: 32576172 PMCID: PMC7310322 DOI: 10.1186/s12890-020-01187-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 05/13/2020] [Indexed: 11/25/2022] Open
Abstract
Background A surfactant protein-A-derived peptide, which we call SPA4 peptide (amino acids: GDFRYSDGTPVNYTNWYRGE), alleviates lung infection and inflammation. This study investigated the effects of intratracheally administered SPA4 peptide on systemic, lung, and health parameters in an outbred mouse strain, and in an intratracheal lipopolysaccharide (LPS) challenge model. Methods The outbred CD-1 mice were intratracheally administered with incremental doses of SPA4 peptide (0.625–10 μg/g body weight) once every 24 h, for 3 days. Mice left untreated and those treated with vehicle were included as controls. Mice were euthanized after 24 h of last administration of SPA4 peptide. In order to assess the biological activity of SPA4 peptide, C57BL6 mice were intratracheally challenged with 5 μg LPS/g body weight and treated with 50 μg SPA4 peptide via intratracheal route 1 h post LPS-challenge. Mice were euthanized after 4 h of LPS challenge. Signs of sickness and body weights were regularly monitored. At the time of necropsy, blood and major organs were harvested. Blood gas and electrolytes, serum biochemical profiles and SPA4 peptide-specific immunoglobulin G (IgG) antibody levels, and common lung injury markers (levels of total protein, albumin, and lactate, lactate dehydrogenase activity, and lung wet/dry weight ratios) were determined. Lung, liver, spleen, kidney, heart, and intestine were examined histologically. Differences in measured parameters were analyzed among study groups by analysis of variance test. Results The results demonstrated no signs of sickness or changes in body weight over 3 days of treatment with various doses of SPA4 peptide. It did not induce any major toxicity or IgG antibody response to SPA4 peptide. The SPA4 peptide treatment also did not affect blood gas, electrolytes, or serum biochemistry. There was no evidence of injury to the tissues and organs. However, the SPA4 peptide suppressed the LPS-induced lung inflammation. Conclusions These findings provide an initial toxicity profile of SPA4 peptide. Intratracheal administration of escalating doses of SPA4 peptide does not induce any significant toxicity at tissue and organ levels. However, treatment with a dose of 50 μg SPA4 peptide, comparable to 2.5 μg/g body weight, alleviates LPS-induced lung inflammation.
Collapse
Affiliation(s)
- Shanjana Awasthi
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Oklahoma Health Sciences Center, 1110 N. Stonewall Avenue, Oklahoma City, OK, 73117, USA.
| | - Negar Rahman
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Oklahoma Health Sciences Center, 1110 N. Stonewall Avenue, Oklahoma City, OK, 73117, USA
| | - Bin Rui
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Oklahoma Health Sciences Center, 1110 N. Stonewall Avenue, Oklahoma City, OK, 73117, USA
| | - Gaurav Kumar
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Oklahoma Health Sciences Center, 1110 N. Stonewall Avenue, Oklahoma City, OK, 73117, USA
| | - Vibhudutta Awasthi
- Department of Pharmaceutical Sciences, and Research Imaging Facility, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73117, USA
| | - Melanie Breshears
- Department of Veterinary Pathobiology, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Stanley Kosanke
- Division of Comparative Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
| |
Collapse
|
17
|
Yang X, Chen X, Xia C, Li S, Zhu L, Xu C. Comparative analysis of the expression profiles of genes related to the Gadd45α signaling pathway in four kinds of liver diseases. Histol Histopathol 2020; 35:949-960. [PMID: 32298459 DOI: 10.14670/hh-18-218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Gadd45α (growth arrest and DNA damage inducible alpha) is a member of a group of genes whose transcript levels are increased following stressful conditions that lead to growth arrest and treatment with agents that lead to DNA damage. Gadd45α is upregulated in liver cirrhosis (LC), hepatic cancer (HC), acute liver failure (AHF) and non-alcoholic fatty liver disease(NAFLD). Here, we investigated the essential differences in the Gadd45α signaling pathway in these diseases at the transcriptional level. The results showed that 44, 46, 71 and 27 genes significant changes in these diseases, and the H-cluster showed that the expression of the Gadd45α signaling-related genes was significantly different in the four liver diseases. DAVID functional analysis showed that the Gadd45α signaling pathway-related genes were mainly involved in cell adhesion and migration, cell proliferation, apoptosis, stress and inflammatory responses, etc. Ingenuity pathway analysis (IPA) software was used to predict the functions of the Gadd45α signaling-related genes, and the results indicated that there were significant changes in cell differentiation, DNA damage repair, autophagy, apoptosis and necrosis. Gadd45α signaling pathway is involved in four kinds of liver disease and regulates a variety of activities via P38 MAPK, NF-κB, mTOR/STAT3, P21, PCNA, PI3K/Akt and other signaling pathways. Modulation of Gadd45α may be exploited to prevent the progression of liver disease, and to identify specific treatments for different stages of liver disease. In summary, the Gadd45α signaling pathway is involved in four kinds of liver disease and regulates a variety of physiological activities through various signaling pathways.
Collapse
Affiliation(s)
- Xianguang Yang
- College of Life Science, Henan Normal University, Xinxiang, Henan Province, China. .,State Key Laboratory Cultivation Base for Cell Differentiation Regulation and Henan Bioengineering Key Laboratory, Henan Normal University, Xinxiang, Henan Province, China
| | - Xuelin Chen
- State Key Laboratory Cultivation Base for Cell Differentiation Regulation and Henan Bioengineering Key Laboratory, Henan Normal University, Xinxiang, Henan Province, China.,College of Life Science, Henan Normal University, Xinxiang, Henan Province, China
| | - Cong Xia
- State Key Laboratory Cultivation Base for Cell Differentiation Regulation and Henan Bioengineering Key Laboratory, Henan Normal University, Xinxiang, Henan Province, China.,College of Life Science, Henan Normal University, Xinxiang, Henan Province, China
| | - Shuaihong Li
- State Key Laboratory Cultivation Base for Cell Differentiation Regulation and Henan Bioengineering Key Laboratory, Henan Normal University, Xinxiang, Henan Province, China.,College of Life Science, Henan Normal University, Xinxiang, Henan Province, China
| | - Lin Zhu
- State Key Laboratory Cultivation Base for Cell Differentiation Regulation and Henan Bioengineering Key Laboratory, Henan Normal University, Xinxiang, Henan Province, China.,College of Life Science, Henan Normal University, Xinxiang, Henan Province, China
| | - Cunshuan Xu
- State Key Laboratory Cultivation Base for Cell Differentiation Regulation and Henan Bioengineering Key Laboratory, Henan Normal University, Xinxiang, Henan Province, China.,College of Life Science, Henan Normal University, Xinxiang, Henan Province, China
| |
Collapse
|
18
|
Lynn H, Sun X, Casanova N, Gonzales-Garay M, Bime C, Garcia JGN. Genomic and Genetic Approaches to Deciphering Acute Respiratory Distress Syndrome Risk and Mortality. Antioxid Redox Signal 2019; 31:1027-1052. [PMID: 31016989 PMCID: PMC6939590 DOI: 10.1089/ars.2018.7701] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Significance: Acute respiratory distress syndrome (ARDS) is a severe, highly heterogeneous critical illness with staggering mortality that is influenced by environmental factors, such as mechanical ventilation, and genetic factors. Significant unmet needs in ARDS are addressing the paucity of validated predictive biomarkers for ARDS risk and susceptibility that hamper the conduct of successful clinical trials in ARDS and the complete absence of novel disease-modifying therapeutic strategies. Recent Advances: The current ARDS definition relies on clinical characteristics that fail to capture the diversity of disease pathology, severity, and mortality risk. We undertook a comprehensive survey of the available ARDS literature to identify genes and genetic variants (candidate gene and limited genome-wide association study approaches) implicated in susceptibility to developing ARDS in hopes of uncovering novel biomarkers for ARDS risk and mortality and potentially novel therapeutic targets in ARDS. We further attempted to address the well-known health disparities that exist in susceptibility to and mortality from ARDS. Critical Issues: Bioinformatic analyses identified 201 ARDS candidate genes with pathway analysis indicating a strong predominance in key evolutionarily conserved inflammatory pathways, including reactive oxygen species, innate immunity-related inflammation, and endothelial vascular signaling pathways. Future Directions: Future studies employing a system biology approach that combines clinical characteristics, genomics, transcriptomics, and proteomics may allow for a better definition of biologically relevant pathways and genotype-phenotype connections and result in improved strategies for the sub-phenotyping of diverse ARDS patients via molecular signatures. These efforts should facilitate the potential for successful clinical trials in ARDS and yield a better fundamental understanding of ARDS pathobiology.
Collapse
Affiliation(s)
- Heather Lynn
- Department of Physiological Sciences and University of Arizona, Tucson, Arizona.,Department of Health Sciences, University of Arizona, Tucson, Arizona
| | - Xiaoguang Sun
- Department of Health Sciences, University of Arizona, Tucson, Arizona
| | - Nancy Casanova
- Department of Health Sciences, University of Arizona, Tucson, Arizona
| | | | - Christian Bime
- Department of Health Sciences, University of Arizona, Tucson, Arizona
| | - Joe G N Garcia
- Department of Health Sciences, University of Arizona, Tucson, Arizona
| |
Collapse
|
19
|
Lin SY, Dan X, Du XX, Ran CL, Lu X, Ren SJ, Tang ZT, Yin LZ, He CL, Yuan ZX, Fu HL, Zhao XL, Shu G. Protective Effects of Salidroside against Carbon Tetrachloride (CCl 4)-Induced Liver Injury by Initiating Mitochondria to Resist Oxidative Stress in Mice. Int J Mol Sci 2019; 20:E3187. [PMID: 31261843 PMCID: PMC6651463 DOI: 10.3390/ijms20133187] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 06/22/2019] [Accepted: 06/24/2019] [Indexed: 12/14/2022] Open
Abstract
The antioxidant effect of salidroside has been proven, but its role in liver injury is poorly understood. In this study, we aimed to evaluate the protective effects and mechanism of salidroside on liver injury induced by carbon tetrachloride (CCl4) in vivo. Mice were pretreated with salidroside (60 mg/kg, intraperitoneally injected, i.p.) once per day for 14 consecutive days and then administered with CCl4 (15.95 g/kg, i.p.) for 24 h to produce a liver injury model. Salidroside attenuated hepatic transaminase elevation in serum and ameliorated liver steatosis and necrosis, thereby suggesting its protective effect on the liver. Salidroside antagonized CCl4-induced toxicity by equilibrating antioxidation system, thereby inhibiting reactive oxygen species accumulation, and restoring mitochondrial structure and function. Salidroside exerts antioxidant and liver-protective effects by selectively inhibiting the activation of genes, including growth arrest and DNA -damage-inducible 45 α (Gadd45a), mitogen-activated protein kinase 7 (Mapk7), and related RAS viral oncogene homolog 2 (Rras2), which induce oxidative stress in the mitogen-activated protein kinase pathway. These results revealed that salidroside can protect the liver from CCl4-induced injury by resisting oxidative stress and protecting mitochondrial function.
Collapse
Affiliation(s)
- Shi-Yu Lin
- Department of Pharmacy, Veterinary Medicine College of Sichuan Agricultural University, Chengdu 611130, China
| | - Xu Dan
- Department of Pharmacy, Veterinary Medicine College of Sichuan Agricultural University, Chengdu 611130, China
| | - Xia-Xia Du
- Department of Pharmacy, Veterinary Medicine College of Sichuan Agricultural University, Chengdu 611130, China
| | - Chong-Lin Ran
- Department of Pharmacy, Veterinary Medicine College of Sichuan Agricultural University, Chengdu 611130, China
| | - Xu Lu
- Department of Pharmacy, Veterinary Medicine College of Sichuan Agricultural University, Chengdu 611130, China
| | - Shao-Jun Ren
- Department of Pharmacy, Veterinary Medicine College of Sichuan Agricultural University, Chengdu 611130, China
| | - Zi-Ting Tang
- Department of Pharmacy, Veterinary Medicine College of Sichuan Agricultural University, Chengdu 611130, China
| | - Li-Zi Yin
- Department of Pharmacy, Veterinary Medicine College of Sichuan Agricultural University, Chengdu 611130, China
| | - Chang-Liang He
- Department of Pharmacy, Veterinary Medicine College of Sichuan Agricultural University, Chengdu 611130, China
| | - Zhi-Xiang Yuan
- Department of Pharmacy, Veterinary Medicine College of Sichuan Agricultural University, Chengdu 611130, China
| | - Hua-Lin Fu
- Department of Pharmacy, Veterinary Medicine College of Sichuan Agricultural University, Chengdu 611130, China
| | - Xiao-Ling Zhao
- Department of Animal Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Gang Shu
- Department of Pharmacy, Veterinary Medicine College of Sichuan Agricultural University, Chengdu 611130, China.
| |
Collapse
|
20
|
Bime C, Pouladi N, Sammani S, Batai K, Casanova N, Zhou T, Kempf CL, Sun X, Camp SM, Wang T, Kittles RA, Lussier YA, Jones TK, Reilly JP, Meyer NJ, Christie JD, Karnes JH, Gonzalez-Garay M, Christiani DC, Yates CR, Wurfel MM, Meduri GU, Garcia JGN. Genome-Wide Association Study in African Americans with Acute Respiratory Distress Syndrome Identifies the Selectin P Ligand Gene as a Risk Factor. Am J Respir Crit Care Med 2018; 197:1421-1432. [PMID: 29425463 PMCID: PMC6005557 DOI: 10.1164/rccm.201705-0961oc] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 02/08/2018] [Indexed: 12/29/2022] Open
Abstract
RATIONALE Genetic factors are involved in acute respiratory distress syndrome (ARDS) susceptibility. Identification of novel candidate genes associated with increased risk and severity will improve our understanding of ARDS pathophysiology and enhance efforts to develop novel preventive and therapeutic approaches. OBJECTIVES To identify genetic susceptibility targets for ARDS. METHODS A genome-wide association study was performed on 232 African American patients with ARDS and 162 at-risk control subjects. The Identify Candidate Causal SNPs and Pathways platform was used to infer the association of known gene sets with the top prioritized intragenic SNPs. Preclinical validation of SELPLG (selectin P ligand gene) was performed using mouse models of LPS- and ventilator-induced lung injury. Exonic variation within SELPLG distinguishing patients with ARDS from sepsis control subjects was confirmed in an independent cohort. MEASUREMENTS AND MAIN RESULTS Pathway prioritization analysis identified a nonsynonymous coding SNP (rs2228315) within SELPLG, encoding P-selectin glycoprotein ligand 1, to be associated with increased susceptibility. In an independent cohort, two exonic SELPLG SNPs were significantly associated with ARDS susceptibility. Additional support for SELPLG as an ARDS candidate gene was derived from preclinical ARDS models where SELPLG gene expression in lung tissues was significantly increased in both ventilator-induced (twofold increase) and LPS-induced (5.7-fold increase) murine lung injury models compared with controls. Furthermore, Selplg-/- mice exhibited significantly reduced LPS-induced inflammatory lung injury compared with wild-type C57/B6 mice. Finally, an antibody that neutralizes P-selectin glycoprotein ligand 1 significantly attenuated LPS-induced lung inflammation. CONCLUSIONS These findings identify SELPLG as a novel ARDS susceptibility gene among individuals of European and African descent.
Collapse
Affiliation(s)
| | - Nima Pouladi
- Department of Medicine
- Center for Biomedical Informatics and Biostatistics
| | | | | | | | | | | | | | | | | | | | - Yves A. Lussier
- Department of Medicine
- Center for Biomedical Informatics and Biostatistics
| | - Tiffanie K. Jones
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - John P. Reilly
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Nuala J. Meyer
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Jason D. Christie
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Jason H. Karnes
- Department of Pharmacy Practice and Science, University of Arizona, Tucson, Arizona
| | | | - David C. Christiani
- Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
- Pulmonary and Critical Care Division, Department of Medicine, Massachusetts General Hospital/Harvard Medical School, Boston, Massachusetts
| | | | - Mark M. Wurfel
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Washington, Seattle, Washington
| | | | | |
Collapse
|
21
|
Liu LQ, Tian FJ, Xiong Y, Zhao Y, Song JB. Gadd45a gene silencing by RNAi promotes cell proliferation and inhibits apoptosis and senescence in skin squamous cell carcinoma through the p53 signaling pathway. J Cell Physiol 2018; 233:7424-7434. [PMID: 29663367 DOI: 10.1002/jcp.26588] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 03/08/2018] [Indexed: 12/28/2022]
Abstract
Skin squamous cell carcinoma (SCC) is generally considered as nonaggressive lesions and mainly caused by ultraviolet (UV) radiation. Gadd45a is a key component protecting skin against UV-induced tumors. For that, the study aims to investigate the mechanism of Gadd45a gene silencing on cell proliferation, apoptosis, and senescence in nude mice with skin SCC through the p53 signaling pathway. Healthy nude mice was collected as the normal group and 40 nude mouse models of skin SCC were successfully established as the model group, which were sub-divided into five groups. The incidence, size, and weight of SCC tumor of nude mice were observed. The mRNA expression of Gadd45a, Cyclin B1, MMP-2, Bcl-2, and Bax were determined by RT-qPCR. Cell viability, cell cycle and apoptosis, cell senescence were detected by MTT assay, flow cytometry, and β-galactosidase staining, respectively. The levels of inflammatory factors and vascular endothelial growth factor (VEGF) were detected by using ELISA. The protein expression rate of mutant p53 was detected by immunohistochemistry. Mice transfected with siGadd45a showed increased tumor incidence, size, and weight. Cells transfected with siGadd45a showed decrease in expression of Gadd45a and Bax; and increase in expression of Cyclin B1, MMP-2, and Bcl-2, expression of mutant p53, IL-1α, IL-1β, IL-6, TNF-α, and VEGF. Cell apoptosis and senescence were inhibited, while cell viability and proliferation were promoted after siGadd45a treatment. The results reveal that Gadd45a silencing increases tumor cell proliferation and reduces apoptosis and senescence through the p53 signaling pathway in skin SCC.
Collapse
Affiliation(s)
- Li-Qian Liu
- Dermatological Department, Linyi People's Hospital, Linyi, P.R. China
| | - Fu-Jun Tian
- Dermatological Department, Linyi People's Hospital, Linyi, P.R. China
| | - Ying Xiong
- Dermatological Department, Linyi People's Hospital, Linyi, P.R. China
| | - Yan Zhao
- Dermatological Department, Linyi People's Hospital, Linyi, P.R. China
| | - Jian-Bo Song
- Dermatological Department, Dezhou People's Hospital, Dezhou, P.R. China
| |
Collapse
|
22
|
Sweeney TE, Lofgren S, Khatri P, Rogers AJ. Gene Expression Analysis to Assess the Relevance of Rodent Models to Human Lung Injury. Am J Respir Cell Mol Biol 2017; 57:184-192. [PMID: 28324666 DOI: 10.1165/rcmb.2016-0395oc] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The relevance of animal models to human diseases is an area of intense scientific debate. The degree to which mouse models of lung injury recapitulate human lung injury has never been assessed. Integrating data from both human and animal expression studies allows for increased statistical power and identification of conserved differential gene expression across organisms and conditions. We sought comprehensive integration of gene expression data in experimental acute lung injury (ALI) in rodents compared with humans. We performed two separate gene expression multicohort analyses to determine differential gene expression in experimental animal and human lung injury. We used correlational and pathway analyses combined with external in vitro gene expression data to identify both potential drivers of underlying inflammation and therapeutic drug candidates. We identified 21 animal lung tissue datasets and three human lung injury bronchoalveolar lavage datasets. We show that the metasignatures of animal and human experimental ALI are significantly correlated despite these widely varying experimental conditions. The gene expression changes among mice and rats across diverse injury models (ozone, ventilator-induced lung injury, LPS) are significantly correlated with human models of lung injury (Pearson r = 0.33-0.45, P < 1E-16). Neutrophil signatures are enriched in both animal and human lung injury. Predicted therapeutic targets, peptide ligand signatures, and pathway analyses are also all highly overlapping. Gene expression changes are similar in animal and human experimental ALI, and provide several physiologic and therapeutic insights to the disease.
Collapse
Affiliation(s)
- Timothy E Sweeney
- 1 Stanford Institute for Immunity, Transplantation and Infection.,2 Biomedical Informatics Research, and
| | - Shane Lofgren
- 1 Stanford Institute for Immunity, Transplantation and Infection.,2 Biomedical Informatics Research, and
| | - Purvesh Khatri
- 1 Stanford Institute for Immunity, Transplantation and Infection.,2 Biomedical Informatics Research, and
| | - Angela J Rogers
- 3 Department of Medicine, Division of Pulmonary and Critical Care Medicine, Stanford University School of Medicine, Stanford, California
| |
Collapse
|
23
|
Boudreault F, Pinilla-Vera M, Englert JA, Kho AT, Isabelle C, Arciniegas AJ, Barragan-Bradford D, Quintana C, Amador-Munoz D, Guan J, Choi KM, Sholl L, Hurwitz S, Tschumperlin DJ, Baron RM. Zinc deficiency primes the lung for ventilator-induced injury. JCI Insight 2017; 2:86507. [PMID: 28570269 DOI: 10.1172/jci.insight.86507] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 04/25/2017] [Indexed: 01/13/2023] Open
Abstract
Mechanical ventilation is necessary to support patients with acute lung injury, but also exacerbates injury through mechanical stress-activated signaling pathways. We show that stretch applied to cultured human cells, and to mouse lungs in vivo, induces robust expression of metallothionein, a potent antioxidant and cytoprotective molecule critical for cellular zinc homeostasis. Furthermore, genetic deficiency of murine metallothionein genes exacerbated lung injury caused by high tidal volume mechanical ventilation, identifying an adaptive role for these genes in limiting lung injury. Stretch induction of metallothionein required zinc and the zinc-binding transcription factor MTF1. We further show that mouse dietary zinc deficiency potentiates ventilator-induced lung injury, and that plasma zinc levels are significantly reduced in human patients who go on to develop acute respiratory distress syndrome (ARDS) compared with healthy and non-ARDS intensive care unit (ICU) controls, as well as with other ICU patients without ARDS. Taken together, our findings identify a potentially novel adaptive response of the lung to stretch and a critical role for zinc in defining the lung's tolerance for mechanical ventilation. These results demonstrate that failure of stretch-adaptive responses play an important role in exacerbating mechanical ventilator-induced lung injury, and identify zinc and metallothionein as targets for lung-protective interventions in patients requiring mechanical ventilation.
Collapse
Affiliation(s)
- Francis Boudreault
- Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts, USA
| | - Miguel Pinilla-Vera
- Pulmonary and Critical Care Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Joshua A Englert
- Division of Pulmonary, Critical Care, and Sleep Medicine, The Ohio State Wexner Medical Center, Columbus, Ohio, USA
| | - Alvin T Kho
- Boston Children's Hospital Informatics Program, Boston, Massachusetts, USA
| | - Colleen Isabelle
- Pulmonary and Critical Care Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Antonio J Arciniegas
- Pulmonary and Critical Care Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Diana Barragan-Bradford
- Pulmonary and Critical Care Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Carolina Quintana
- Pulmonary and Critical Care Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Diana Amador-Munoz
- Pulmonary and Critical Care Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Jiazhen Guan
- Pulmonary and Critical Care Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Kyoung Moo Choi
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
| | | | | | - Shelley Hurwitz
- Center for Clinical Investigation, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Daniel J Tschumperlin
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
| | - Rebecca M Baron
- Pulmonary and Critical Care Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| |
Collapse
|
24
|
Wang T, Gross C, Desai AA, Zemskov E, Wu X, Garcia AN, Jacobson JR, Yuan JXJ, Garcia JGN, Black SM. Endothelial cell signaling and ventilator-induced lung injury: molecular mechanisms, genomic analyses, and therapeutic targets. Am J Physiol Lung Cell Mol Physiol 2016; 312:L452-L476. [PMID: 27979857 DOI: 10.1152/ajplung.00231.2016] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 12/08/2016] [Accepted: 12/11/2016] [Indexed: 12/13/2022] Open
Abstract
Mechanical ventilation is a life-saving intervention in critically ill patients with respiratory failure due to acute respiratory distress syndrome (ARDS). Paradoxically, mechanical ventilation also creates excessive mechanical stress that directly augments lung injury, a syndrome known as ventilator-induced lung injury (VILI). The pathobiology of VILI and ARDS shares many inflammatory features including increases in lung vascular permeability due to loss of endothelial cell barrier integrity resulting in alveolar flooding. While there have been advances in the understanding of certain elements of VILI and ARDS pathobiology, such as defining the importance of lung inflammatory leukocyte infiltration and highly induced cytokine expression, a deep understanding of the initiating and regulatory pathways involved in these inflammatory responses remains poorly understood. Prevailing evidence indicates that loss of endothelial barrier function plays a primary role in the development of VILI and ARDS. Thus this review will focus on the latest knowledge related to 1) the key role of the endothelium in the pathogenesis of VILI; 2) the transcription factors that relay the effects of excessive mechanical stress in the endothelium; 3) the mechanical stress-induced posttranslational modifications that influence key signaling pathways involved in VILI responses in the endothelium; 4) the genetic and epigenetic regulation of key target genes in the endothelium that are involved in VILI responses; and 5) the need for novel therapeutic strategies for VILI that can preserve endothelial barrier function.
Collapse
Affiliation(s)
- Ting Wang
- Department of Medicine, The University of Arizona Health Sciences, Tucson, Arizona
| | - Christine Gross
- Vascular Biology Center, Augusta University, Augusta, Georgia
| | - Ankit A Desai
- Department of Medicine, The University of Arizona Health Sciences, Tucson, Arizona
| | - Evgeny Zemskov
- Department of Medicine, The University of Arizona Health Sciences, Tucson, Arizona
| | - Xiaomin Wu
- Department of Medicine, The University of Arizona Health Sciences, Tucson, Arizona
| | - Alexander N Garcia
- Department of Pharmacology University of Illinois at Chicago, Chicago, Illinois; and
| | - Jeffrey R Jacobson
- Department of Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Jason X-J Yuan
- Department of Medicine, The University of Arizona Health Sciences, Tucson, Arizona
| | - Joe G N Garcia
- Department of Medicine, The University of Arizona Health Sciences, Tucson, Arizona
| | - Stephen M Black
- Department of Medicine, The University of Arizona Health Sciences, Tucson, Arizona;
| |
Collapse
|
25
|
Evidence Supporting a Lymphatic Endothelium Origin for Angiomyolipoma, a TSC2(-) Tumor Related to Lymphangioleiomyomatosis. THE AMERICAN JOURNAL OF PATHOLOGY 2016; 186:1825-1836. [PMID: 27289491 DOI: 10.1016/j.ajpath.2016.03.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 03/02/2016] [Accepted: 03/07/2016] [Indexed: 12/27/2022]
Abstract
Angiomyolipoma (AML) is a tumor closely related to lymphangioleiomyomatosis (LAM). Both entities are characterized by the proliferation of smooth muscle actin and melanocytic glycoprotein 100 (recognized by antibody HMB-45)-positive spindle-shaped and epithelioid cells. AML and LAM are etiologically linked to mutations in the tsc2 and tsc1 genes in the case of LAM. These genes encode the proteins tuberous sclerosis complex (TSC)-1 and TSC2, which are directly involved in suppressing the mechanistic target of rapamycin cell growth signaling pathway. Although significant progress has been made in characterizing and pharmacologically slowing the progression of AML and LAM with rapamycin, our understanding of their pathogenesis lacks an identified cell of origin. We used an AML-derived cell line to determine whether TSC2 restitution brings about the cell type from which AML arises. We found that AML cells express lymphatic endothelial cell markers consistent with lymphatic endothelial cell precursors in vivo and in vitro. Moreover, on TSC2 correction, AML cells mature into adult lymphatic endothelial cells and have functional attributes characteristic of this cell lineage, suggesting a lymphatic endothelial cell of origin for AML. These effects are dependent on TSC2-mediated mechanistic target of rapamycin inactivation. Finally, we demonstrate the in vitro effectiveness of norcantharidin, a lymphangiogenesis inhibitor, as a potential co-adjuvant therapy in the treatment of AML.
Collapse
|
26
|
Krishnan R, Park JA, Seow CY, Lee PVS, Stewart AG. Cellular Biomechanics in Drug Screening and Evaluation: Mechanopharmacology. Trends Pharmacol Sci 2015; 37:87-100. [PMID: 26651416 DOI: 10.1016/j.tips.2015.10.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 10/12/2015] [Accepted: 10/23/2015] [Indexed: 12/14/2022]
Abstract
The study of mechanobiology is now widespread. The impact of cell and tissue mechanics on cellular responses is well appreciated. However, knowledge of the impact of cell and tissue mechanics on pharmacological responsiveness, and its application to drug screening and mechanistic investigations, have been very limited in scope. We emphasize the need for a heightened awareness of the important bidirectional influence of drugs and biomechanics in all living systems. We propose that the term 'mechanopharmacology' be applied to approaches that employ in vitro systems, biomechanically appropriate to the relevant (patho)physiology, to identify new drugs and drug targets. This article describes the models and techniques that are being developed to transform drug screening and evaluation, ranging from a 2D environment to the dynamic 3D environment of the target expressed in the disease of interest.
Collapse
Affiliation(s)
- Ramaswamy Krishnan
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Jin-Ah Park
- Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Chun Y Seow
- Center for Heart Lung Innovation, St Pauls Hospital, University of British Columbia, Vancouver, Canada
| | - Peter V-S Lee
- Department of Mechanical Engineering, University of Melbourne, Melbourne, Australia
| | - Alastair G Stewart
- Lung Health Research Centre, Department of Pharmacology and Therapeutics, University of Melbourne, Melbourne, Australia.
| |
Collapse
|
27
|
Mathew B, Takekoshi D, Sammani S, Epshtein Y, Sharma R, Smith BD, Mitra S, Desai AA, Weichselbaum RR, Garcia JGN, Jacobson JR. Role of GADD45a in murine models of radiation- and bleomycin-induced lung injury. Am J Physiol Lung Cell Mol Physiol 2015; 309:L1420-9. [PMID: 26498248 DOI: 10.1152/ajplung.00146.2014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Accepted: 08/25/2015] [Indexed: 11/22/2022] Open
Abstract
We previously reported protective effects of GADD45a (growth arrest and DNA damage-inducible gene 45 alpha) in murine ventilator-induced lung injury (VILI) via effects on Akt-mediated endothelial cell signaling. In the present study we investigated the role of GADD45a in separate murine models of radiation- and bleomycin-induced lung injury. Initial studies of wild-type mice subjected to single-dose thoracic radiation (10 Gy) confirmed a significant increase in lung GADD45a expression within 24 h and persistent at 6 wk. Mice deficient in GADD45a (GADD45a(-/-)) demonstrated increased susceptibility to radiation-induced lung injury (RILI, 10 Gy) evidenced by increased bronchoalveolar lavage (BAL) fluid total cell counts, protein and albumin levels, and levels of inflammatory cytokines compared with RILI-challenged wild-type animals at 2 and 4 wk. Furthermore, GADD45a(-/-) mice had decreased total and phosphorylated lung Akt levels both at baseline and 6 wk after RILI challenge relative to wild-type mice while increased RILI susceptibility was observed in both Akt(+/-) mice and mice treated with an Akt inhibitor beginning 1 wk prior to irradiation. Additionally, overexpression of a constitutively active Akt1 transgene reversed RILI-susceptibility in GADD45a(-/-) mice. In separate studies, lung fibrotic changes 2 wk after treatment with bleomycin (0.25 U/kg IT) was significantly increased in GADD45a(-/-) mice compared with wild-type mice assessed by lung collagen content and histology. These data implicate GADD45a as an important modulator of lung inflammatory responses across different injury models and highlight GADD45a-mediated signaling as a novel target in inflammatory lung injury clinically.
Collapse
Affiliation(s)
- Biji Mathew
- Division of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Daisuke Takekoshi
- Division of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois; Department of Respiratory Medicine, Tohoku University Hospital, Miyagi, Japan
| | - Saad Sammani
- Division of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Yulia Epshtein
- Division of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Rajesh Sharma
- Division of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Brett D Smith
- Department of Radiation Oncology, University of Chicago, Chicago, Illinois; and
| | - Sumegha Mitra
- Division of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Ankit A Desai
- Arizona Health Sciences Center, University of Arizona, Tucson, Arizona
| | | | - Joe G N Garcia
- Arizona Health Sciences Center, University of Arizona, Tucson, Arizona
| | - Jeffrey R Jacobson
- Division of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois;
| |
Collapse
|
28
|
Xing Y, Wang H, Liu X, Yu X, Chen R, Wang C, Yu X, Sun L. Exploring the genes associated with the response to intravenous immunoglobulin in patients with Kawasaki disease using DNA microarray analysis. Exp Mol Pathol 2015; 98:7-12. [DOI: 10.1016/j.yexmp.2014.11.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 09/25/2014] [Accepted: 11/12/2014] [Indexed: 02/07/2023]
|
29
|
Moreno-Vinasco L, Quijada H, Sammani S, Siegler J, Letsiou E, Deaton R, Saadat L, Zaidi RS, Messana J, Gann PH, Machado RF, Ma W, Camp SM, Wang T, Garcia JGN. Nicotinamide phosphoribosyltransferase inhibitor is a novel therapeutic candidate in murine models of inflammatory lung injury. Am J Respir Cell Mol Biol 2014; 51:223-8. [PMID: 24588101 DOI: 10.1165/rcmb.2012-0519oc] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
We previously identified the intracellular nicotinamide phosphoribosyltransferase (iNAMPT, aka pre-B-cell colony enhancing factor) as a candidate gene promoting acute respiratory distress syndrome (ARDS) and ventilator-induced lung injury (VILI) with circulating nicotinamide phosphoribosyltransferase potently inducing NF-κB signaling in lung endothelium. iNAMPT also synthesizes intracellular nicotinamide adenine dinucleotide (iNAD) in response to extracellular oxidative stress, contributing to the inhibition of apoptosis via ill-defined mechanisms. We now further define the role of iNAMPT activity in the pathogenesis of ARDS/VILI using the selective iNAMPT inhibitor FK-866. C57/B6 mice were exposed to VILI (40 ml/kg, 4 h) or LPS (1.5 mg/kg, 18 h) after osmotic pump delivery of FK-866 (100 mg/kg/d, intraperitoneally). Assessment of total bronchoalveolar lavage (BAL) protein, polymorphonuclear neutrophil (PMN) levels, cytokine levels (TNF-α, IL-6, IL-1α), lung iNAD levels, and injury scores revealed that FK-866-mediated iNAMPT inhibition successfully reduced lung tissue iNAD levels, BAL injury indices, inflammatory cell infiltration, and lung injury scores in LPS- and VILI-exposed mice. FK-866 further increased lung PMN apoptosis, as reflected by caspase-3 activation in BAL PMNs. These findings support iNAMPT inhibition via FK-866 as a novel therapeutic agent for ARDS via enhanced apoptosis in inflammatory PMNs.
Collapse
|
30
|
Vagus nerve through α7 nAChR modulates lung infection and inflammation: models, cells, and signals. BIOMED RESEARCH INTERNATIONAL 2014; 2014:283525. [PMID: 25136575 PMCID: PMC4127262 DOI: 10.1155/2014/283525] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 05/08/2014] [Accepted: 05/15/2014] [Indexed: 12/27/2022]
Abstract
Cholinergic anti-inflammatory pathway (CAP) bridges immune and nervous systems and plays pleiotropic roles in modulating inflammation in animal models by targeting different immune, proinflammatory, epithelial, endothelial, stem, and progenitor cells and signaling pathways. Acute lung injury (ALI) is a devastating inflammatory disease. It is pathogenically heterogeneous and involves many cells and signaling pathways. Here, we emphasized the research regarding the modulatory effects of CAP on animal models, cell population, and signaling pathways that involved in the pathogenesis of ALI. By comparing the differential effects of CAP on systemic and pulmonary inflammation, we postulated that a pulmonary parasympathetic inflammatory reflex is formed to sense and respond to pathogens in the lung. Work targeting the formation and function of pulmonary parasympathetic inflammatory reflex would extend our understanding of how vagus nerve senses, recognizes, and fights with pathogens and inflammatory responses.
Collapse
|
31
|
Spassov S, Pfeifer D, Strosing K, Ryter S, Hummel M, Faller S, Hoetzel A. Genetic targets of hydrogen sulfide in ventilator-induced lung injury--a microarray study. PLoS One 2014; 9:e102401. [PMID: 25025333 PMCID: PMC4099342 DOI: 10.1371/journal.pone.0102401] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 06/17/2014] [Indexed: 12/26/2022] Open
Abstract
Recently, we have shown that inhalation of hydrogen sulfide (H2S) protects against ventilator-induced lung injury (VILI). In the present study, we aimed to determine the underlying molecular mechanisms of H2S-dependent lung protection by analyzing gene expression profiles in mice. C57BL/6 mice were subjected to spontaneous breathing or mechanical ventilation in the absence or presence of H2S (80 parts per million). Gene expression profiles were determined by microarray, sqRT-PCR and Western Blot analyses. The association of Atf3 in protection against VILI was confirmed with a Vivo-Morpholino knockout model. Mechanical ventilation caused a significant lung inflammation and damage that was prevented in the presence of H2S. Mechanical ventilation favoured the expression of genes involved in inflammation, leukocyte activation and chemotaxis. In contrast, ventilation with H2S activated genes involved in extracellular matrix remodelling, angiogenesis, inhibition of apoptosis, and inflammation. Amongst others, H2S administration induced Atf3, an anti-inflammatory and anti-apoptotic regulator. Morpholino mediated reduction of Atf3 resulted in elevated lung injury despite the presence of H2S. In conclusion, lung protection by H2S during mechanical ventilation is associated with down-regulation of genes related to oxidative stress and inflammation and up-regulation of anti-apoptotic and anti-inflammatory genes. Here we show that Atf3 is clearly involved in H2S mediated protection.
Collapse
Affiliation(s)
- Sashko Spassov
- Department of Anaesthesiology and Intensive Care Medicine, University Medical Center Freiburg, Freiburg, Germany
| | - Dietmar Pfeifer
- Genomics Core Lab, Dept. Hematology, Oncology and Stem Cell Transplantation, University Medical Center Freiburg, Freiburg, Germany
| | - Karl Strosing
- Department of Anaesthesiology and Intensive Care Medicine, University Medical Center Freiburg, Freiburg, Germany
| | - Stefan Ryter
- Joan and Sanford I. Weill Department of Medicine, New York-Presbyterian Hospital, Weill Cornell Medical College, New York, New York, United States of America
| | - Matthias Hummel
- Department of Anaesthesiology and Intensive Care Medicine, University Medical Center Freiburg, Freiburg, Germany
| | - Simone Faller
- Department of Anaesthesiology and Intensive Care Medicine, University Medical Center Freiburg, Freiburg, Germany
| | - Alexander Hoetzel
- Department of Anaesthesiology and Intensive Care Medicine, University Medical Center Freiburg, Freiburg, Germany
| |
Collapse
|
32
|
Abstract
MicroRNAs (miRNAs) are a class of small noncoding RNA which exert post-transcriptional gene regulation activity by targeting messenger RNAs. miRNAs have been found to be involved in various fundamental biological processes and deregulation of miRNAs is known to result in pathological conditions. In this review, we provide an overview of recent discoveries on the role played by this class of molecules in lung development and in pulmonary diseases, such as asthma, cystic fibrosis, chronic obstructive pulmonary disease, and pulmonary artery hypertension. Considering the relevant role of these miRNAs under physiological and pathological conditions, they represent new clinical targets as well as diagnostic and prognostic tools. Therefore, this review pays special attention to recent advances and possible future directions for the use of miRNAs for clinical applications.
Collapse
Affiliation(s)
- Roberto Sessa
- Cardiovascular research institute, University of California San Francisco, CA 94158, USA
| | | |
Collapse
|
33
|
Mitra S, Wade MS, Sun X, Moldobaeva N, Flores C, Ma SF, Zhang W, Garcia JGN, Jacobson JR. GADD45a promoter regulation by a functional genetic variant associated with acute lung injury. PLoS One 2014; 9:e100169. [PMID: 24940746 PMCID: PMC4062486 DOI: 10.1371/journal.pone.0100169] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Accepted: 05/22/2014] [Indexed: 01/28/2023] Open
Abstract
Rationale Growth arrest DNA damage inducible alpha (GADD45a) is a stress-induced gene we have shown to participate in the pathophysiology of ventilator-induced lung injury (VILI) via regulation of mechanical stress-induced Akt ubiquitination and phosphorylation. The regulation of GADD45a expression by mechanical stress and its relationship with acute lung injury (ALI) susceptibility and severity, however, remains unknown. Objectives We examined mechanical stress-dependent regulatory elements (MSRE) in the GADD45a promoter and the contribution of promoter polymorphisms in GADD45a expression and ALI susceptibility. Methods and Results Initial studies in GADD45a knockout and heterozygous mice confirmed the relationship of GADD45a gene dose to VILI severity. Human lung endothelial cells (EC) transfected with a luciferase vector containing the full length GADD45a promoter sequence (−771 to +223) demonstrated a >4 fold increase in GADD45a expression in response to 18% cyclic stretch (CS, 4 h) compared to static controls while specific promoter regions harboring CS-dependent MSRE were identified using vectors containing serial deletion constructs of the GADD45a promoter. In silico analyses of GADD45a promoter region (−371 to −133) revealed a potential binding site for specificity protein 1 (SP1), a finding supported by confirmed SP1 binding with the GADD45a promoter and by the significant attenuation of CS-dependent GADD45a promoter activity in response to SP1 silencing. Separately, case-control association studies revealed a significant association of a GADD45a promoter SNP at −589 (rs581000, G>C) with reduced ALI susceptibility. Subsequently, we found allelic variation of this SNP is associated with both differential GADD45a expression in mechanically stressed EC (18% CS, 4 h) and differential binding site of interferon regulatory factor 7 (IRF7) at this site. Conclusion These results strongly support a functional role for GADD45a in ALI/VILI and identify a specific gene variant that confers risk for ALI.
Collapse
Affiliation(s)
- Sumegha Mitra
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois, United States of America
| | - Michael S. Wade
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois, United States of America
| | - Xiaoguang Sun
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois, United States of America
| | - Nurgul Moldobaeva
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois, United States of America
| | - Carlos Flores
- Centro de Investigacion Biomedica en red Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
- Research Unit, Hospital Universitario Nuestra Senora de Candelaria, Tenerife, Spain
| | - Shwu-Fan Ma
- Division of Pulmonary, Critical Care and Sleep, University of Chicago, Chicago, Illinois, United States of America
| | - Wei Zhang
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois, United States of America
- Department of Pediatrics, University of Illinois at Chicago, Chicago, Illinois, United States of America
| | - Joe G. N. Garcia
- Arizona Health Sciences Center, University of Arizona, Tucson, Arizona, United States of America
| | - Jeffrey R. Jacobson
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois, United States of America
- * E-mail:
| |
Collapse
|
34
|
Parker JC. Acute lung injury and pulmonary vascular permeability: use of transgenic models. Compr Physiol 2013; 1:835-82. [PMID: 23737205 DOI: 10.1002/cphy.c100013] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Acute lung injury is a general term that describes injurious conditions that can range from mild interstitial edema to massive inflammatory tissue destruction. This review will cover theoretical considerations and quantitative and semi-quantitative methods for assessing edema formation and increased vascular permeability during lung injury. Pulmonary edema can be quantitated directly using gravimetric methods, or indirectly by descriptive microscopy, quantitative morphometric microscopy, altered lung mechanics, high-resolution computed tomography, magnetic resonance imaging, positron emission tomography, or x-ray films. Lung vascular permeability to fluid can be evaluated by measuring the filtration coefficient (Kf) and permeability to solutes evaluated from their blood to lung clearances. Albumin clearances can then be used to calculate specific permeability-surface area products (PS) and reflection coefficients (σ). These methods as applied to a wide variety of transgenic mice subjected to acute lung injury by hyperoxic exposure, sepsis, ischemia-reperfusion, acid aspiration, oleic acid infusion, repeated lung lavage, and bleomycin are reviewed. These commonly used animal models simulate features of the acute respiratory distress syndrome, and the preparation of genetically modified mice and their use for defining specific pathways in these disease models are outlined. Although the initiating events differ widely, many of the subsequent inflammatory processes causing lung injury and increased vascular permeability are surprisingly similar for many etiologies.
Collapse
Affiliation(s)
- James C Parker
- Department of Physiology, University of South Alabama, Mobile, Alabama, USA.
| |
Collapse
|
35
|
Predescu DN, Bardita C, Tandon R, Predescu SA. Intersectin-1s: an important regulator of cellular and molecular pathways in lung injury. Pulm Circ 2013; 3:478-98. [PMID: 24618535 PMCID: PMC4070809 DOI: 10.1086/674439] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Abstract Acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) are severe syndromes resulting from the diffuse damage of the pulmonary parenchyma. ALI and ARDS are induced by a plethora of local or systemic insults, leading to the activation of multiple pathways responsible for injury, resolution, and repair or scarring of the lungs. Despite the large efforts aimed at exploring the roles of different pathways in humans and animal models and the great strides made in understanding the pathogenesis of ALI/ARDS, the only viable treatment options are still dependent on ventilator and cardiovascular support. Investigation of the pathophysiological mechanisms responsible for initiation and resolution or advancement toward lung scarring in ALI/ARDS animal models led to a better understanding of the disease's complexity and helped in elucidating the links between ALI and systemic multiorgan failure. Although animal models of ALI/ARDS have pointed out a variety of new ideas for study, there are still limited data regarding the initiating factors, the critical steps in the progression of the disease, and the central mechanisms dictating its resolution or progression to lung scarring. Recent studies link deficiency of intersectin-1s (ITSN-1s), a prosurvival protein of lung endothelial cells, to endothelial barrier dysfunction and pulmonary edema as well as to the repair/recovery from ALI. This review discusses the effects of ITSN-1s deficiency on pulmonary endothelium and its significance in the pathology of ALI/ARDS.
Collapse
Affiliation(s)
- Dan N Predescu
- 1 Department of Pharmacology, Rush University, Chicago, Illinois, USA
| | | | | | | |
Collapse
|
36
|
WANG HUIYONG, ZHANG YANQING, QIAN JIANG, ZHANG MINGUI, WANG XIANGNING. Radiotherapy-induced Gadd45a impairs lacrimal gland epithelial cell migration and proliferation. Mol Med Rep 2013; 8:1049-54. [DOI: 10.3892/mmr.2013.1636] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Accepted: 08/12/2013] [Indexed: 11/05/2022] Open
|
37
|
Wang T, Wang L, Moreno-Vinasco L, Lang GD, Siegler JH, Mathew B, Usatyuk PV, Samet JM, Geyh AS, Breysse PN, Natarajan V, Garcia JGN. Particulate matter air pollution disrupts endothelial cell barrier via calpain-mediated tight junction protein degradation. Part Fibre Toxicol 2012; 9:35. [PMID: 22931549 PMCID: PMC3489700 DOI: 10.1186/1743-8977-9-35] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Accepted: 06/20/2012] [Indexed: 01/26/2023] Open
Abstract
Background Exposure to particulate matter (PM) is a significant risk factor for increased cardiopulmonary morbidity and mortality. The mechanism of PM-mediated pathophysiology remains unknown. However, PM is proinflammatory to the endothelium and increases vascular permeability in vitro and in vivo via ROS generation. Objectives We explored the role of tight junction proteins as targets for PM-induced loss of lung endothelial cell (EC) barrier integrity and enhanced cardiopulmonary dysfunction. Methods Changes in human lung EC monolayer permeability were assessed by Transendothelial Electrical Resistance (TER) in response to PM challenge (collected from Ft. McHenry Tunnel, Baltimore, MD, particle size >0.1 μm). Biochemical assessment of ROS generation and Ca2+ mobilization were also measured. Results PM exposure induced tight junction protein Zona occludens-1 (ZO-1) relocation from the cell periphery, which was accompanied by significant reductions in ZO-1 protein levels but not in adherens junction proteins (VE-cadherin and β-catenin). N-acetyl-cysteine (NAC, 5 mM) reduced PM-induced ROS generation in ECs, which further prevented TER decreases and atteneuated ZO-1 degradation. PM also mediated intracellular calcium mobilization via the transient receptor potential cation channel M2 (TRPM2), in a ROS-dependent manner with subsequent activation of the Ca2+-dependent protease calpain. PM-activated calpain is responsible for ZO-1 degradation and EC barrier disruption. Overexpression of ZO-1 attenuated PM-induced endothelial barrier disruption and vascular hyperpermeability in vivo and in vitro. Conclusions These results demonstrate that PM induces marked increases in vascular permeability via ROS-mediated calcium leakage via activated TRPM2, and via ZO-1 degradation by activated calpain. These findings support a novel mechanism for PM-induced lung damage and adverse cardiovascular outcomes.
Collapse
Affiliation(s)
- Ting Wang
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Mekontso Dessap A, Voiriot G, Zhou T, Marcos E, Dudek SM, Jacobson JR, Machado R, Adnot S, Brochard L, Maitre B, Garcia JGN. Conflicting physiological and genomic cardiopulmonary effects of recruitment maneuvers in murine acute lung injury. Am J Respir Cell Mol Biol 2012; 46:541-50. [PMID: 22135358 PMCID: PMC3359949 DOI: 10.1165/rcmb.2011-0306oc] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Accepted: 11/16/2011] [Indexed: 11/24/2022] Open
Abstract
Low tidal volume ventilation, although promoting atelectasis, is a protective strategy against ventilator-induced lung injury. Deep inflation (DI) recruitment maneuvers restore lung volumes, but potentially compromise lung parenchymal and vascular function via repetitive overdistention. Our objective was to examine cardiopulmonary physiological and transcriptional consequences of recruitment maneuvers. C57/BL6 mice challenged with either PBS or LPS via aspiration were placed on mechanical ventilation (5 h) using low tidal volume inflation (TI; 8 μl/g) alone or in combination with intermittent DIs (0.75 ml twice/min). Lung mechanics during TI ventilation significantly deteriorated, as assessed by forced oscillation technique and pressure-volume curves. DI mitigated the TI-induced alterations in lung mechanics, but induced a significant rise in right ventricle systolic pressures and pulmonary vascular resistances, especially in LPS-challenged animals. In addition, DI exacerbated the LPS-induced genome-wide lung inflammatory transcriptome, with prominent dysregulation of a gene cluster involving vascular processes, as well as increases in cytokine concentrations in bronchoalveolar lavage fluid and plasma. Gene ontology analyses of right ventricular tissue expression profiles also identified inflammatory signatures, as well as apoptosis and membrane organization ontologies, as potential elements in the response to acute pressure overload. Our results, although confirming the improvement in lung mechanics offered by DI, highlight a detrimental impact in sustaining inflammatory response and exacerbating lung vascular dysfunction, events contributing to increases in right ventricle afterload. These novel insights should be integrated into the clinical assessment of the risk/benefit of recruitment maneuver strategies.
Collapse
Affiliation(s)
- Armand Mekontso Dessap
- INSERM, Unité U955 (Institut Mondor de Recherche Biomédicale), Créteil, France
- Université Paris Est Créteil Val de Marne, Faculté de Médecine, Créteil, France
- AP-HP, Groupe Henri Mondor–Albert Chenevier, Service de Réanimation Médicale, Créteil, France
| | - Guillaume Voiriot
- INSERM, Unité U955 (Institut Mondor de Recherche Biomédicale), Créteil, France
- Université Paris Est Créteil Val de Marne, Faculté de Médecine, Créteil, France
| | - Tong Zhou
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois; and
| | - Elisabeth Marcos
- INSERM, Unité U955 (Institut Mondor de Recherche Biomédicale), Créteil, France
- Université Paris Est Créteil Val de Marne, Faculté de Médecine, Créteil, France
| | - Steven M. Dudek
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois; and
| | - Jeff R. Jacobson
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois; and
| | - Roberto Machado
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois; and
| | - Serge Adnot
- INSERM, Unité U955 (Institut Mondor de Recherche Biomédicale), Créteil, France
- Université Paris Est Créteil Val de Marne, Faculté de Médecine, Créteil, France
| | - Laurent Brochard
- Intensive Care Unit, Geneva University Hospital, and Geneva University, Geneva, Switzerland
| | - Bernard Maitre
- INSERM, Unité U955 (Institut Mondor de Recherche Biomédicale), Créteil, France
- Université Paris Est Créteil Val de Marne, Faculté de Médecine, Créteil, France
- AP-HP, Groupe Henri Mondor–Albert Chenevier, Service de Réanimation Médicale, Créteil, France
| | - Joe G. N. Garcia
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois; and
| |
Collapse
|
39
|
Faller S, Strosing KM, Ryter SW, Buerkle H, Loop T, Schmidt R, Hoetzel A. The volatile anesthetic isoflurane prevents ventilator-induced lung injury via phosphoinositide 3-kinase/Akt signaling in mice. Anesth Analg 2012; 114:747-56. [PMID: 22383671 DOI: 10.1213/ane.0b013e31824762f0] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Mechanical ventilation leads to ventilator-induced lung injury in animals, and can contribute to acute lung injury/acute respiratory distress syndrome in humans. Acute lung injury/acute respiratory distress syndrome currently causes an unacceptably high rate of morbidity and mortality among critically ill patients. Volatile anesthetics have been shown to exert anti-inflammatory and organ-protective effects in vivo. We investigated the effects of the volatile anesthetic isoflurane on lung injury during mechanical ventilation. METHODS C57BL/6N mice were ventilated with a tidal volume of 12 mL/kg body weight for 6 hours in the absence or presence of isoflurane, and, in a second series, with or without the specific phosphoinositide 3-kinase/Akt inhibitor LY294002. Lung injury was determined by comparative histology, and by the isolation of bronchoalveolar lavage for differential cell counting and analysis of cytokine levels using enzyme-linked immunosorbent assays. Lung homogenates were analyzed for protein expression by Western blotting. RESULTS Mechanical ventilation caused increases in alveolar wall thickening, cellular infiltration, and an elevated ventilator-induced lung injury score. Neutrophil influx and cytokine (i.e., interleukin-1β, and macrophage inflammatory protein-2) release were enhanced in the bronchoalveolar lavage of ventilated mice. The expression levels of the stress proteins hemeoxygenase-1 and heat shock protein-70 were elevated in lung tissue homogenates. Isoflurane ventilation significantly reduced lung damage, inflammation, and stress protein expression. In contrast, phosphorylation of Akt protein was substantially increased during mechanical ventilation with isoflurane. Inhibition of phosphoinositide 3-kinase/Akt signaling before mechanical ventilation completely reversed the lung-protective effects of isoflurane treatment in vivo. CONCLUSIONS Inhalation of isoflurane during mechanical ventilation protects against lung injury by preventing proinflammatory responses. This protection is mediated via phosphoinositide 3-kinase/Akt signaling.
Collapse
Affiliation(s)
- Simone Faller
- Department of Anesthesiology and Critical Care Medicine, University Medical Center Freiburg, Hugstetter Str. 55, D-79106 Freiburg, Germany
| | | | | | | | | | | | | |
Collapse
|
40
|
Models and mechanisms of acute lung injury caused by direct insults. Eur J Cell Biol 2012; 91:590-601. [PMID: 22284832 DOI: 10.1016/j.ejcb.2011.11.004] [Citation(s) in RCA: 122] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Revised: 11/18/2011] [Accepted: 11/30/2011] [Indexed: 11/22/2022] Open
Abstract
Acute lung injury (ALI) and its more severe form acute respiratory distress syndrome (ARDS) are life-threatening diseases that are characterized by acute onset, pulmonary inflammation, oedema due to increased vascular permeability and severe hypoxemia. Clinically, ARDS can be divided into ARDS due to direct causes such as pneumonia, aspiration or injurious ventilation, and due to extrapulmonary indirect causes such as sepsis, severe burns or pancreatitis. In order to identify potential therapeutic targets, we asked here whether common molecular mechanisms can be identified that are relevant in different models of the direct form of ALI/ARDS. To this end, we reviewed three widely used models: (a) one based on a biological insult, i.e. instillation of bacterial endotoxins; (b) one based on a chemical insult, i.e. instillation of acid; and (c) one based on a mechanical insult, i.e. injurious ventilation. Studies were included only if the mediator or mechanism of interest was studied in at least two of the three animal models listed above. As endpoints, we selected neutrophil sequestration, permeability, hypoxemia (physiological dysfunction) and survival. Our analysis showed that most studies have focused on mechanisms of pulmonary neutrophil sequestration and models with moderate forms of oedema. The underlying mechanisms that involve canonical inflammatory pathways such as MAP kinases, CXCR2 chemokines, PAF, leukotrienes, adhesions molecules (CD18, ICAM-1) and elastase have been defined relatively well. Further mechanisms including TNF, DARC, HMGB1, PARP, GADD45 and collagenase are under investigation. Such mechanisms that are shared between the three ALI models may represent viable therapeutic targets. However, only few studies have linked these pathways to hypoxemia, the most important clinical aspect of ALI/ARDS. Since moderate oedema does not necessarily lead to hypoxemia, we suggest that the clinical relevance of experimental studies can be further improved by putting greater emphasis on gas exchange.
Collapse
|
41
|
Barca-Mayo O, Liao XH, DiCosmo C, Dumitrescu A, Moreno-Vinasco L, Wade MS, Sammani S, Mirzapoiazova T, Garcia JGN, Refetoff S, Weiss RE. Role of type 2 deiodinase in response to acute lung injury (ALI) in mice. Proc Natl Acad Sci U S A 2011; 108:E1321-9. [PMID: 22065740 PMCID: PMC3241808 DOI: 10.1073/pnas.1109926108] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Thyroid hormone (TH) metabolism, mediated by deiodinase types 1, 2, and 3 (D1, D2, and D3) is profoundly affected by acute illness. We examined the role of TH metabolism during ventilator-induced lung injury (VILI) in mice. Mice exposed to VILI recapitulated the serum TH findings of acute illness, namely a decrease in 3,5,3'-triiodothyronine (T(3)) and thyroid-stimulating hormone and an increase in reverse T(3). Both D2 immunoreactivity and D2 enzymatic activity were increased significantly. D1 and D3 activity did not change. Using D2 knockout (D2KO) mice, we determined whether the increase in D2 was an adaptive response. Although similar changes in serum TH levels were observed in D2KO and WT mice, D2KO mice exhibited greater susceptibility to VILI than WT mice, as evidenced by poorer alveoli integrity and quantified by lung chemokine and cytokine mRNA induction. These data suggest that an increase in lung D2 is protective against VILI. Similar findings of increased inflammatory markers were found in hypothyroid WT mice exposed to VILI compared with euthyroid mice, indicating that the lungs were functionally hypothyroid. Treatment of D2KO mice with T(3) reversed many of the lung chemokine and cytokine profiles seen in response to VILI, demonstrating a role for T(3) in the treatment of lung injury. We conclude that TH metabolism in the lung is linked to the response to inflammatory injury and speculate that D2 exerts its protective effect by making more TH available to the injured lung tissue.
Collapse
Affiliation(s)
| | | | | | | | | | - Michael S. Wade
- Department of Medicine, University of Illinois, Chicago, IL 60612
| | - Saad Sammani
- Department of Medicine, University of Illinois, Chicago, IL 60612
| | | | - Joe G. N. Garcia
- Department of Medicine, University of Illinois, Chicago, IL 60612
| | - Samuel Refetoff
- Departments of Medicine and
- Pediatrics, University of Chicago, Chicago, IL 60637; and
| | - Roy E. Weiss
- Departments of Medicine and
- Pediatrics, University of Chicago, Chicago, IL 60637; and
| |
Collapse
|
42
|
Ma SF, Xie L, Pino-Yanes M, Sammani S, Wade MS, Letsiou E, Siegler J, Wang T, Infusino G, Kittles RA, Flores C, Zhou T, Prabhakar BS, Moreno-Vinasco L, Villar J, Jacobson JR, Dudek SM, Garcia JGN. Type 2 deiodinase and host responses of sepsis and acute lung injury. Am J Respir Cell Mol Biol 2011; 45:1203-11. [PMID: 21685153 PMCID: PMC3262665 DOI: 10.1165/rcmb.2011-0179oc] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Accepted: 06/10/2011] [Indexed: 12/21/2022] Open
Abstract
The role of thyroid hormone metabolism in clinical outcomes of the critically ill remains unclear. Using preclinical models of acute lung injury (ALI), we assessed the gene and protein expression of type 2 deiodinase (DIO2), a key driver for synthesis of biologically active triiodothyronine, and addressed potential association of DIO2 genetic variants with ALI in a multiethnic cohort. DIO2 gene and protein expression levels in murine lung were validated by microarrays and immunoblotting. Lung injury was assessed by levels of bronchoalveolar lavage protein and leukocytes. Single-nucleotide polymorphisms were genotyped and ALI susceptibility association assessed. Significant increases in both DIO2 gene and D2 protein expression were observed in lung tissues from murine ALI models (LPS- and ventilator-induced lung injury), with expression directly increasing with the extent of lung injury. Mice with reduced levels of DIO2 expression (by silencing RNA) demonstrated reduced thyroxine levels in plasma and increased lung injury (increased bronchoalveolar lavage protein and leukocytes), suggesting a protective role for DIO2 in ALI. The G (Ala) allele of the Thr92Ala coding single-nucleotide polymorphism (rs225014) was protective in severe sepsis and severe sepsis-associated ALI after adjustments for age, sex, and genetic ancestry in a logistic regression model in European Americans. Our studies indicate that DIO2 is a novel ALI candidate gene, the nonsynonymous Thr92Ala coding variant of which confers ALI protection. Increased DIO2 expression may dampen the ALI inflammatory response, thereby strengthening the premise that thyroid hormone metabolism is intimately linked to the integrated response to inflammatory injury in critically ill patients.
Collapse
Affiliation(s)
- Shwu-Fan Ma
- Section of Pulmonary and Critical Care, Department of Medicine, University of Chicago, Chicago, Illinois
| | - Lishi Xie
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Maria Pino-Yanes
- Centro de Investigacion Biomedica en Red Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
- Research Unit, Hospital Universitario Nuestra Señora de Candelaria, Tenerife, Spain
| | - Saad Sammani
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Michael S. Wade
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Eleftheria Letsiou
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Jessica Siegler
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Ting Wang
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Giovanni Infusino
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Rick A. Kittles
- Section of Hematology and Oncology, Department of Medicine, and
| | - Carlos Flores
- Centro de Investigacion Biomedica en Red Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
- Research Unit, Hospital Universitario Nuestra Señora de Candelaria, Tenerife, Spain
| | - Tong Zhou
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Bellur S. Prabhakar
- Department of Microbiology and Immunology, University of Illinois at Chicago, Chicago, Illinois
| | - Liliana Moreno-Vinasco
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Jesus Villar
- Centro de Investigacion Biomedica en Red Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
- Research Unit, Hospital Universitario Dr. Negrin, Las Palmas de Gran Canaria, Spain; and
- Keenan Research Center at the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Toronto, Canada
| | - Jeffrey R. Jacobson
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Steven M. Dudek
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Joe G. N. Garcia
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| |
Collapse
|
43
|
Mitra S, Sammani S, Wang T, Boone DL, Meyer NJ, Dudek SM, Moreno-Vinasco L, Garcia JGN, Jacobson JR. Role of growth arrest and DNA damage-inducible α in Akt phosphorylation and ubiquitination after mechanical stress-induced vascular injury. Am J Respir Crit Care Med 2011; 184:1030-40. [PMID: 21816939 PMCID: PMC3763933 DOI: 10.1164/rccm.201103-0447oc] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2011] [Accepted: 07/29/2011] [Indexed: 11/16/2022] Open
Abstract
RATIONALE The stress-induced growth arrest and DNA damage-inducible a (GADD45a) gene is up-regulated by mechanical stress with GADD45a knockout (GADD45a(-/-)) mice demonstrating both increased susceptibility to ventilator-induced lung injury (VILI) and reduced levels of the cell survival and vascular permeability signaling effector (Akt). However, the functional role of GADD45a in the pathogenesis of VILI is unknown. OBJECTIVES We sought to define the role of GADD45a in the regulation of Akt activation induced by mechanical stress. METHODS VILI-challenged GADD45a(-/-) mice were administered a constitutively active Akt1 vector and injury was assessed by bronchoalveolar lavage cell counts and protein levels. Human pulmonary artery endothelial cells (EC) were exposed to 18% cyclic stretch (CS) under conditions of GADD45a silencing and used for immunoprecipitation, Western blotting or immunofluoresence. EC were also transfected with mutant ubiquitin vectors to characterize site-specific Akt ubiquitination. DNA methylation was measured using methylspecific polymerase chain reaction assay. MEASUREMENTS AND MAIN RESULTS Studies exploring the linkage of GADD45a with mechanical stress and Akt regulation revealed VILI challenged GADD45a(-/-) mice to have significantly reduced lung injury on overexpression of Akt1 transgene. Increased mechanical stress with 18% CS in EC induced Akt phosphorylation via E3 ligase tumor necrosis factor receptor–associated factor 6 (TRAF6)–mediated Akt K63 ubiquitination resulting in Akt trafficking and activation at the membrane. GADD45a is essential to this process because GADD45a silenced endothelial cells and GADD45a(-/-) mice exhibited increased Akt K48 ubiquitination leading to proteasomal degradation. These events involve loss of ubiquitin carboxyl terminal hydrolase 1(UCHL1), a deubiquitinating enzyme that normally removes K48 polyubiquitin chains bound to Akt thus promoting Akt K63 ubiquitination. Loss of GADD45a significantly reduces UCHL1 expression via UCHL1 promoter methylation resulting in increased Akt K48 ubiquitination and reduced Akt levels. CONCLUSIONS These studies highlight a novel role for GADD45a in the regulation of site-specific Akt ubiquitination and activation and implicate a significant functional role for GADD45a in the clinical predisposition to VILI.
Collapse
Affiliation(s)
- Sumegha Mitra
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Saad Sammani
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Ting Wang
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - David L. Boone
- Section of Gastroenterology, University of Chicago, Chicago, Illinois; and
| | - Nuala J. Meyer
- Division of Pulmonary, Allergy, and Critical Care, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Steven M. Dudek
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Liliana Moreno-Vinasco
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Joe G. N. Garcia
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| | - Jeffrey R. Jacobson
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, Illinois
| |
Collapse
|
44
|
Mathew B, Jacobson JR, Berdyshev E, Huang Y, Sun X, Zhao Y, Gerhold LM, Siegler J, Evenoski C, Wang T, Zhou T, Zaidi R, Moreno-Vinasco L, Bittman R, Chen CT, LaRiviere PJ, Sammani S, Lussier YA, Dudek SM, Natarajan V, Weichselbaum RR, Garcia JGN. Role of sphingolipids in murine radiation-induced lung injury: protection by sphingosine 1-phosphate analogs. FASEB J 2011; 25:3388-400. [PMID: 21712494 DOI: 10.1096/fj.11-183970] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Clinically significant radiation-induced lung injury (RILI) is a common toxicity in patients administered thoracic radiotherapy. Although the molecular etiology is poorly understood, we previously characterized a murine model of RILI in which alterations in lung barrier integrity surfaced as a potentially important pathobiological event and genome-wide lung gene mRNA levels identified dysregulation of sphingolipid metabolic pathway genes. We hypothesized that sphingolipid signaling components serve as modulators and novel therapeutic targets of RILI. Sphingolipid involvement in murine RILI was confirmed by radiation-induced increases in lung expression of sphingosine kinase (SphK) isoforms 1 and 2 and increases in the ratio of ceramide to sphingosine 1-phosphate (S1P) and dihydro-S1P (DHS1P) levels in plasma, bronchoalveolar lavage fluid, and lung tissue. Mice with a targeted deletion of SphK1 (SphK1(-/-)) or with reduced expression of S1P receptors (S1PR1(+/-), S1PR2(-/-), and S1PR3(-/-)) exhibited marked RILI susceptibility. Finally, studies of 3 potent vascular barrier-protective S1P analogs, FTY720, (S)-FTY720-phosphonate (fTyS), and SEW-2871, identified significant RILI attenuation and radiation-induced gene dysregulation by the phosphonate analog, fTyS (0.1 and 1 mg/kg i.p., 2×/wk) and to a lesser degree by SEW-2871 (1 mg/kg i.p., 2×/wk), compared with those in controls. These results support the targeting of S1P signaling as a novel therapeutic strategy in RILI.
Collapse
Affiliation(s)
- Biji Mathew
- Institute for Personalized Respiratory Medicine, Section of Pulmonary, Critical Care, and Sleep Medicine, University of Illinois at Chicago, Chicago, Illinois 60612, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Garcia JGN. Genomic investigations into acute inflammatory lung injury. PROCEEDINGS OF THE AMERICAN THORACIC SOCIETY 2011; 8:167-72. [PMID: 21543796 PMCID: PMC3131835 DOI: 10.1513/pats.201101-002ms] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2011] [Accepted: 03/02/2011] [Indexed: 11/20/2022]
Abstract
Acute lung injury (ALI) and its more severe form, acute respiratory distress syndrome, are complex illnesses involving the interplay of both environmental (such as mechanical ventilation) and genetic factors. To understand better the underlying mechanisms of pathogenesis associated with ALI, we recently identified several candidate genes by global expression profiling in preclinical models of ALI and relevant single-nucleotide polymorphisms. We summarize here several strategies successfully used to identify novel ALI candidate genes and detail the validation of variants in these genes as contributing factors to ALI pathobiology, conclusions based on functional analyses, and specific genetic association studies conducted in ALI cohorts. Continued insights into ALI pathogenesis and identification of genetic variants, which confer ALI risk and severity, promise to reveal novel molecular therapeutic targets that can be translated into personalized treatments to reduce the very high, unacceptable mortality of this disorder.
Collapse
|
46
|
Zhou T, Garcia JG, Zhang W. Integrating microRNAs into a system biology approach to acute lung injury. Transl Res 2011; 157:180-90. [PMID: 21420028 PMCID: PMC3073780 DOI: 10.1016/j.trsl.2011.01.010] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2010] [Revised: 01/15/2011] [Accepted: 01/18/2011] [Indexed: 01/02/2023]
Abstract
Acute lung injury (ALI), including the ventilator-induced lung injury (VILI) and the more severe acute respiratory distress syndrome (ARDS), are common and complex inflammatory lung diseases potentially affected by various genetic and nongenetic factors. Using the candidate gene approach, genetic variants associated with immune response and inflammatory pathways have been identified and implicated in ALI. Because gene expression is an intermediate phenotype that resides between the DNA sequence variation and the higher level cellular or whole-body phenotypes, the illustration of gene expression regulatory networks potentially could enhance understanding of disease susceptibility and the development of inflammatory lung syndromes. MicroRNAs (miRNAs) have emerged as a novel class of gene regulators that play critical roles in complex diseases including ALI. Comparisons of global miRNA profiles in animal models of ALI and VILI identified several miRNAs (eg, miR-146a and miR-155) previously implicated in immune response and inflammatory pathways. Therefore, via regulation of target genes in these biological processes and pathways, miRNAs potentially contribute to the development of ALI. Although this line of inquiry exists at a nascent stage, miRNAs have the potential to be critical components of a comprehensive model for inflammatory lung disease built by a systems biology approach that integrates genetic, genomic, proteomic, epigenetic as well as environmental stimuli information. Given their particularly recognized role in regulation of immune and inflammatory responses, miRNAs also serve as novel therapeutic targets and biomarkers for ALI/ARDS or VILI, thus facilitating the realization of personalized medicine for individuals with acute inflammatory lung disease.
Collapse
Affiliation(s)
- Tong Zhou
- Section of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA
- Institute for Personalized Respiratory Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Joe G.N. Garcia
- Section of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA
- Institute for Personalized Respiratory Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Wei Zhang
- Department of Pediatrics, University of Illinois at Chicago, Chicago, IL 60612, USA
- Institute for Human Genetics, University of Illinois at Chicago, Chicago, IL 60612, USA
| |
Collapse
|
47
|
Yuan JXJ, Garcia JG, West JB, Hales CA, Rich S, Archer SL. Genomics of Acute Lung Injury and Vascular Barrier Dysfunction. TEXTBOOK OF PULMONARY VASCULAR DISEASE 2011. [PMCID: PMC7122529 DOI: 10.1007/978-0-387-87429-6_63] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Acute lung injury (ALI) is a devastating syndrome of diffuse alveolar damage that develops via a variety of local and systemic insults such as sepsis, trauma, pneumonia, and aspiration. It is interestingly to note that only a subset of individuals exposed to potential ALI-inciting insults develop the disorder and the severity of the disease varies from complete resolution to death. In addition, ALI susceptibility and severity are also affected by ethnicity as evidenced by the higher mortality rates observed in African-American ALI patients compared with other ethnic groups in the USA. Moreover, marked differences in strain-specific ALI responses to inflammatory and injurious agents are observed in preclinical animal models. Together, these observations strongly indicate genetic components to be involved in the pathogenesis of ALI. The identification of genes contributing to ALI would potentially provide a better understanding of ALI pathobiology, yield novel biomarkers, identify individuals or populations at risk, and prove useful for the development of novel and individualized therapies. Genome-wide searches in animal models have identified a number of quantitative trait loci that associate with ALI susceptibility. In this chapter, we utilize a systems biology approach combining cellular signaling pathway analysis with population- based association studies to review established and suspected candidate genes that contribute to dysfunction of endothelial cell barrier integrity and ALI susceptibility.
Collapse
Affiliation(s)
- Jason X. -J. Yuan
- Departments of Medicine, COMRB Rm. 3131 (MC 719), University of Illinois at Chicago, 909 South Wolcott Avenue, Chicago, 60612 Illinois USA
| | - Joe G.N. Garcia
- 310 Admin.Office Building (MC 672), University of Illinois at Chicago, 1737 W. Polk Street, Suite 310, Chicago, 60612 Illinois USA
| | - John B. West
- Department of Medicine, University of California, San Diego, 9500 Gilman Drive, La Jolla, 92093-0623 California USA
| | - Charles A. Hales
- Dept. Pulmonary & Critical Care Medicine, Massachusetts General Hospital, 55 Fruit Street, Boston, 02114 Massachusetts USA
| | - Stuart Rich
- Department of Medicine, University of Chicago Medical Center, 5841 S. Maryland Ave., Chicago, 60637 Illinois USA
| | - Stephen L. Archer
- Department of Medicine, University of Chicago School of Medicine, 5841 S. Maryland Ave., Chicago, 60637 Illinois USA
| |
Collapse
|
48
|
Mirzapoiazova T, Moitra J, Moreno-Vinasco L, Sammani S, Turner JR, Chiang ET, Evenoski C, Wang T, Singleton PA, Huang Y, Lussier YA, Watterson DM, Dudek SM, Garcia JGN. Non-muscle myosin light chain kinase isoform is a viable molecular target in acute inflammatory lung injury. Am J Respir Cell Mol Biol 2011; 44:40-52. [PMID: 20139351 PMCID: PMC3028257 DOI: 10.1165/rcmb.2009-0197oc] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2009] [Accepted: 11/24/2009] [Indexed: 01/03/2023] Open
Abstract
Acute lung injury (ALI) and mechanical ventilator-induced lung injury (VILI), major causes of acute respiratory failure with elevated morbidity and mortality, are characterized by significant pulmonary inflammation and alveolar/vascular barrier dysfunction. Previous studies highlighted the role of the non-muscle myosin light chain kinase isoform (nmMLCK) as an essential element of the inflammatory response, with variants in the MYLK gene that contribute to ALI susceptibility. To define nmMLCK involvement further in acute inflammatory syndromes, we used two murine models of inflammatory lung injury, induced by either an intratracheal administration of lipopolysaccharide (LPS model) or mechanical ventilation with increased tidal volumes (the VILI model). Intravenous delivery of the membrane-permeant MLC kinase peptide inhibitor, PIK, produced a dose-dependent attenuation of both LPS-induced lung inflammation and VILI (~50% reductions in alveolar/vascular permeability and leukocyte influx). Intravenous injections of nmMLCK silencing RNA, either directly or as cargo within angiotensin-converting enzyme (ACE) antibody-conjugated liposomes (to target the pulmonary vasculature selectively), decreased nmMLCK lung expression (∼70% reduction) and significantly attenuated LPS-induced and VILI-induced lung inflammation (∼40% reduction in bronchoalveolar lavage protein). Compared with wild-type mice, nmMLCK knockout mice were significantly protected from VILI, with significant reductions in VILI-induced gene expression in biological pathways such as nrf2-mediated oxidative stress, coagulation, p53-signaling, leukocyte extravasation, and IL-6-signaling. These studies validate nmMLCK as an attractive target for ameliorating the adverse effects of dysregulated lung inflammation.
Collapse
Affiliation(s)
- Tamara Mirzapoiazova
- Department of Medicine, University of Chicago; Section of Pulmonary, Critical Care, Sleep, and Allergy, University of Illinois at Chicago; Department of Pathology; Section of Genetic Medicine, University of Chicago; Northwestern Medical School; and Institute for Personalized and Respiratory Medicine, University of Illinois at Chicago, Chicago Illinois
| | - Jaideep Moitra
- Department of Medicine, University of Chicago; Section of Pulmonary, Critical Care, Sleep, and Allergy, University of Illinois at Chicago; Department of Pathology; Section of Genetic Medicine, University of Chicago; Northwestern Medical School; and Institute for Personalized and Respiratory Medicine, University of Illinois at Chicago, Chicago Illinois
| | - Liliana Moreno-Vinasco
- Department of Medicine, University of Chicago; Section of Pulmonary, Critical Care, Sleep, and Allergy, University of Illinois at Chicago; Department of Pathology; Section of Genetic Medicine, University of Chicago; Northwestern Medical School; and Institute for Personalized and Respiratory Medicine, University of Illinois at Chicago, Chicago Illinois
| | - Saad Sammani
- Department of Medicine, University of Chicago; Section of Pulmonary, Critical Care, Sleep, and Allergy, University of Illinois at Chicago; Department of Pathology; Section of Genetic Medicine, University of Chicago; Northwestern Medical School; and Institute for Personalized and Respiratory Medicine, University of Illinois at Chicago, Chicago Illinois
| | - Jerry R. Turner
- Department of Medicine, University of Chicago; Section of Pulmonary, Critical Care, Sleep, and Allergy, University of Illinois at Chicago; Department of Pathology; Section of Genetic Medicine, University of Chicago; Northwestern Medical School; and Institute for Personalized and Respiratory Medicine, University of Illinois at Chicago, Chicago Illinois
| | - Eddie T. Chiang
- Department of Medicine, University of Chicago; Section of Pulmonary, Critical Care, Sleep, and Allergy, University of Illinois at Chicago; Department of Pathology; Section of Genetic Medicine, University of Chicago; Northwestern Medical School; and Institute for Personalized and Respiratory Medicine, University of Illinois at Chicago, Chicago Illinois
| | - Carrie Evenoski
- Department of Medicine, University of Chicago; Section of Pulmonary, Critical Care, Sleep, and Allergy, University of Illinois at Chicago; Department of Pathology; Section of Genetic Medicine, University of Chicago; Northwestern Medical School; and Institute for Personalized and Respiratory Medicine, University of Illinois at Chicago, Chicago Illinois
| | - Ting Wang
- Department of Medicine, University of Chicago; Section of Pulmonary, Critical Care, Sleep, and Allergy, University of Illinois at Chicago; Department of Pathology; Section of Genetic Medicine, University of Chicago; Northwestern Medical School; and Institute for Personalized and Respiratory Medicine, University of Illinois at Chicago, Chicago Illinois
| | - Patrick A. Singleton
- Department of Medicine, University of Chicago; Section of Pulmonary, Critical Care, Sleep, and Allergy, University of Illinois at Chicago; Department of Pathology; Section of Genetic Medicine, University of Chicago; Northwestern Medical School; and Institute for Personalized and Respiratory Medicine, University of Illinois at Chicago, Chicago Illinois
| | - Yong Huang
- Department of Medicine, University of Chicago; Section of Pulmonary, Critical Care, Sleep, and Allergy, University of Illinois at Chicago; Department of Pathology; Section of Genetic Medicine, University of Chicago; Northwestern Medical School; and Institute for Personalized and Respiratory Medicine, University of Illinois at Chicago, Chicago Illinois
| | - Yves A. Lussier
- Department of Medicine, University of Chicago; Section of Pulmonary, Critical Care, Sleep, and Allergy, University of Illinois at Chicago; Department of Pathology; Section of Genetic Medicine, University of Chicago; Northwestern Medical School; and Institute for Personalized and Respiratory Medicine, University of Illinois at Chicago, Chicago Illinois
| | - D. Martin Watterson
- Department of Medicine, University of Chicago; Section of Pulmonary, Critical Care, Sleep, and Allergy, University of Illinois at Chicago; Department of Pathology; Section of Genetic Medicine, University of Chicago; Northwestern Medical School; and Institute for Personalized and Respiratory Medicine, University of Illinois at Chicago, Chicago Illinois
| | - Steven M. Dudek
- Department of Medicine, University of Chicago; Section of Pulmonary, Critical Care, Sleep, and Allergy, University of Illinois at Chicago; Department of Pathology; Section of Genetic Medicine, University of Chicago; Northwestern Medical School; and Institute for Personalized and Respiratory Medicine, University of Illinois at Chicago, Chicago Illinois
| | - Joe G. N. Garcia
- Department of Medicine, University of Chicago; Section of Pulmonary, Critical Care, Sleep, and Allergy, University of Illinois at Chicago; Department of Pathology; Section of Genetic Medicine, University of Chicago; Northwestern Medical School; and Institute for Personalized and Respiratory Medicine, University of Illinois at Chicago, Chicago Illinois
| |
Collapse
|
49
|
Mathew B, Huang Y, Jacobson JR, Berdyshev E, Gerhold LM, Wang T, Moreno-Vinasco L, Lang G, Zhao Y, Chen CT, LaRiviere PJ, Mauceri H, Sammani S, Husain AN, Dudek SM, Natarajan V, Lussier YA, Weichselbaum RR, Garcia JGN. Simvastatin attenuates radiation-induced murine lung injury and dysregulated lung gene expression. Am J Respir Cell Mol Biol 2010; 44:415-22. [PMID: 20508068 DOI: 10.1165/rcmb.2010-0122oc] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Novel therapies are desperately needed for radiation-induced lung injury (RILI), which, despite aggressive corticosteroid therapy, remains a potentially fatal and dose-limiting complication of thoracic radiotherapy. We assessed the utility of simvastatin, an anti-inflammatory and lung barrier-protective agent, in a dose- and time-dependent murine model of RILI (18-(25 Gy). Simvastatin reduced multiple RILI indices, including vascular leak, leukocyte infiltration, and histological evidence of oxidative stress, while reversing RILI-associated dysregulated gene expression, including p53, nuclear factor-erythroid-2-related factor, and sphingolipid metabolic pathway genes. To identify key regulators of simvastatin-mediated RILI protection, we integrated whole-lung gene expression data obtained from radiated and simvastatin-treated mice with protein-protein interaction network analysis (single-network analysis of proteins). Topological analysis of the gene product interaction network identified eight top-prioritized genes (Ccna2a, Cdc2, fcer1 g, Syk, Vav3, Mmp9, Itgam, Cd44) as regulatory nodes within an activated RILI network. These studies identify the involvement of specific genes and gene networks in RILI pathobiology, and confirm that statins represent a novel strategy to limit RILI.
Collapse
Affiliation(s)
- Biji Mathew
- Section of Pulmonary and Critical Care Medicine, Department of Medicine, University of Chicago, Illinois, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Chiou SK, Hodges A, Hoa N. Suppression of growth arrest and DNA damage-inducible 45alpha expression confers resistance to sulindac and indomethacin-induced gastric mucosal injury. J Pharmacol Exp Ther 2010; 334:693-702. [PMID: 20498252 DOI: 10.1124/jpet.110.168153] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Nonsteroidal anti-inflammatory drugs (NSAIDs) such as sulindac and indomethacin are a major cause of gastric erosions and ulcers. Induction of apoptosis by NSAIDs is an important mechanism involved. Understanding how NSAIDs affect genes that regulate apoptosis is useful for designing therapeutic or preventive strategies and for evaluating the efficacy of safer drugs being developed. We investigated whether growth arrest and DNA damage-inducible 45alpha (GADD45alpha), a stress signal response gene involved in regulation of DNA repair and induction of apoptosis, plays a part in NSAID-induced gastric mucosal injury and apoptosis in vivo in mice and in vitro in cultured human AGS and rat RGM-1 gastric epithelial cells. Intraperitoneal administration of sulindac and indomethacin both resulted in up-regulation of GADD45alpha expression and induction of significant injury and apoptosis in gastric mucosa of wild-type mice. GADD45alpha(-/-) mice were markedly more resistant to both sulindac- and indomethacin-induced gastric mucosal injury and apoptosis than wild-type mice. Sulindac sulfide and indomethacin treatments also concentration-dependently increased GADD45alpha expression and apoptosis in AGS and RGM-1 cells. Antisense suppression of GADD45alpha expression significantly reduced sulindac and indomethacin-induced activation of caspase-9 and apoptosis in AGS cells. Pretreatments with exogenous prostaglandins and small interfering RNA suppression of cyclooxygenase (COX)-1 and -2 did not affect up-regulation of GADD45alpha by sulindac sulfide and indomethacin in AGS cells. These findings indicate that GADD45alpha up-regulation is a COX-independent mechanism that is required for induction of severe gastric mucosal apoptosis and injury by NSAIDs, probably via a capase-9-dependent pathway of programmed cell death.
Collapse
Affiliation(s)
- Shiun-Kwei Chiou
- Department of Veterans Affairs Medical Center, 5901 E. 7th St, Long Beach, CA 90822-5201, USA.
| | | | | |
Collapse
|