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Liu J, Bao T, Zhou Y, Ma M, Tian Z. Deficiency of Secreted Phosphoprotein 1 Alleviates Hyperoxia-induced Bronchopulmonary Dysplasia in Neonatal Mice. Inflammation 2024:10.1007/s10753-024-02088-1. [PMID: 38951356 DOI: 10.1007/s10753-024-02088-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 05/24/2024] [Accepted: 06/20/2024] [Indexed: 07/03/2024]
Abstract
Bronchopulmonary dysplasia (BPD) is a common chronic lung disorder characterized by impaired proximal airway and bronchoalveolar development in premature births. Secreted phosphoprotein 1 (SPP1) is involved in lung development and lung injury events, while its role was not explored in BPD. For establishing the in vivo models of BPD, a mouse model of hyperoxia-induced lung injury was generated by exposing neonatal mice to hyperoxia for 7 days after birth. Alveolar myofibroblasts (AMYFs) were treated with hyperoxia to establish the in vitro models of BPD. Based on the scRNA-seq analysis of lungs of mice housed under normoxia or hyperoxia conditions, mouse macrophages and fibroblasts were main different cell clusters between the two groups, and differentially expressed genes in fibroblasts were screened. Further GO and KEGG enrichment analysis revealed that these differentially expressed genes were mainly enriched in the pathways related to cell proliferation, apoptosis as well as the PI3K-AKT and ERK/MAPK pathways. SPP1 was found up-regulated in the lung tissues of hyperoxia mice. We also demonstrated the up-regulation of SPP1 in the BPD patients, the mouse model of hyperoxia-induced lung injury, and hyperoxia-induced cells. SPP1 deficiency was revealed to reduce the hyperoxia-induced apoptosis, oxidative stress and inflammation and increase the viability of AMYFs. In the mouse model of hyperoxia induced lung injury, SPP1 deficiency was demonstrated to reverse the hyperoxia-induced alveolar growth disruption, oxidative stress and inflammation. Overall, SPP1 exacerbates BPD progression in vitro and in vivo by regulating oxidative stress and inflammatory response via the PI3K-AKT and ERK/MAPK pathways, which might provide novel therapeutic target for BPD therapy.
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Affiliation(s)
- Juan Liu
- Department of Neonatology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, No.1 Huanghe West Road, Huaiyin District Huaian, Jiangsu, 223300, China
| | - Tianping Bao
- Department of Neonatology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, No.1 Huanghe West Road, Huaiyin District Huaian, Jiangsu, 223300, China
| | - Yajuan Zhou
- Department of Neonatology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, No.1 Huanghe West Road, Huaiyin District Huaian, Jiangsu, 223300, China
| | - Mengmeng Ma
- Department of Neonatology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, No.1 Huanghe West Road, Huaiyin District Huaian, Jiangsu, 223300, China
| | - Zhaofang Tian
- Department of Neonatology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, No.1 Huanghe West Road, Huaiyin District Huaian, Jiangsu, 223300, China.
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Lu N, Qin H, Meng Z, Yu Y, Gao Q, Cheng Z, Liu C, Hu J. Inhibiting apoptosis and GSDME-mediated pyroptosis attenuates hepatic injury in septic mice. Arch Biochem Biophys 2024; 754:109923. [PMID: 38408533 DOI: 10.1016/j.abb.2024.109923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 02/01/2024] [Accepted: 02/03/2024] [Indexed: 02/28/2024]
Abstract
BACKGROUND Sepsis is characterized by severe inflammation and organ dysfunction resulting from a dysregulated organismal response to infection. Although pyroptosis has been presumably shown to be a major cause of multiple organ failure and septic death, whether gasdermin E (GSDME)-mediated pyroptosis occurs in septic liver injury and whether inhibiting apoptosis and GSDME-mediated pyroptosis can attenuate septic liver injury remain unclear. This study investigated the role of apoptosis and GSDME-mediated pyroptosis in septic liver injury. METHODS Adult male C57BL/6 mice were randomly divided into four groups: sham, cecal ligation puncture (CLP), CLP + Z-DEVD-FMK (a caspase-3 inhibitor, 5 mg/kg), and CLP + Ac-DMLD-CMK (a GSDME inhibitor, 5 mg/kg). Sepsis severity was assessed using the murine sepsis score (MSS). Hepatic tissue damage was observed by the hematoxylin-eosin staining method, the activities of serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST), the levels of malondialdehyde (MDA), the concentrations of interleukin-1β (IL-1β), and tumor necrosis factor-α (TNF-α) were measured according to the related kits, and the changes in the hepatic tissue reactive oxygen species (ROS) levels were detected by immunofluorescence (IF). The protein expression levels of cleaved caspase-3, GSDME-N, IL-1β, B-cell lymphoma-2 (Bcl-2), cytochrome C (Cyt-c), and acetaldehyde dehydrogenase 2 (ALDH2) were detected using western blotting. GSDME expression was detected by immunohistochemistry. RESULTS Compared with the Sham group, CLP mice showed high sepsis scores and obvious liver damage. However, in the CLP + Z-DEVD-FMK and CLP + Ac-DMLD-CMK groups, the sepsis scores were reduced and liver injury was alleviated. Compared with the Sham group, the serum ALT and AST activities, MDA and ROS levels, and IL-1β and TNF-α concentrations were increased in the CLP group, as well as the protein expression of cleaved caspase-3, GSDME-N, IL-1β, Cyt-c, and GSDME positive cells (P < 0.05). However, the expression levels of Bcl-2 and ALDH2 protein were decreased (P < 0.05). Compared with the CLP group, the CLP + Z-DEVD-FMK and CLP + Ac-DMLD-CMK groups showed low sepsis scores, ALT and AST activities, MDA and ROS levels, decreased IL-1β and TNF-α concentrations, and decreased expression of cleaved caspase-3, GSDME-N, IL-1β protein expression, and GSDME positive cells (P < 0.05). The expression levels of Bcl-2 and ALDH2 protein were increased (P < 0.05). CONCLUSION Apoptosis and GSDME-mediated pyroptosis are involved in the development of sepsis-induced hepatic injury. Inhibition of apoptosis and GSDME-mediated pyroptosis attenuates injury. ALDH2 plays a protective role by inhibiting apoptosis and pyroptosis.
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Affiliation(s)
- Na Lu
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Bengbu Medical University, PR China; Anhui Province Key Laboratory of Clinical and Preclinical Research in Respiratory Disease, PR China; Clinical Research Center for Respiratory Disease (tumor) in Anhui Province, PR China.
| | - Hongqian Qin
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Bengbu Medical University, PR China; Anhui Province Key Laboratory of Clinical and Preclinical Research in Respiratory Disease, PR China; Clinical Research Center for Respiratory Disease (tumor) in Anhui Province, PR China.
| | - Zhaofei Meng
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Bengbu Medical University, PR China; Anhui Province Key Laboratory of Clinical and Preclinical Research in Respiratory Disease, PR China; Clinical Research Center for Respiratory Disease (tumor) in Anhui Province, PR China.
| | - Ying Yu
- Department of Physiology, Bengbu Medical University, Bengbu, 233000, Anhui, PR China.
| | - Qin Gao
- Department of Physiology, Bengbu Medical University, Bengbu, 233000, Anhui, PR China.
| | - Zhipeng Cheng
- School of Clinical Medicine, Bengbu Medical University, Bengbu, 233000, Anhui, PR China
| | - Chuanmiao Liu
- National Clinical Research Center for Infectious Diseases, 287 Changhuai Road, Bengbu, 233004, Anhui, PR China.
| | - Junfeng Hu
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Bengbu Medical University, PR China; Anhui Province Key Laboratory of Clinical and Preclinical Research in Respiratory Disease, PR China; Clinical Research Center for Respiratory Disease (tumor) in Anhui Province, PR China.
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3
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Ge L, Wang Y, Liu Z, Du H, Zhao D. Chitinase 3-like 1 plays a pivotal role in airway response of RSV infection via regulating DC functional transition. Int Immunopharmacol 2023; 124:110819. [PMID: 37607465 DOI: 10.1016/j.intimp.2023.110819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 08/11/2023] [Accepted: 08/16/2023] [Indexed: 08/24/2023]
Abstract
BACKGROUND Dendritic cells (DCs) contribute to immune imbalance and airway hyperresponsiveness (AHR) induced by respiratory syncytial virus (RSV). The aim of present study was to explore the mechanism of RSV regulating naive T cell differentiation through DCs. METHODS We generated a Lentivirus shRNA expression vector to knock down CHI3L1 in mouse lungs and bone marrow-derived dendritic cells (BMDCs). Then we investigated the effect of CHI3L1 knockdown on MAPK/ERK pathway, PI3K/AKT pathway, mature DCs represented by molecular markers, naive T cell differentiation and related cytokine expression in vitro and in vivo models of RSV. RESULTS RSV elevated CHI3L1 expression in lung DCs and BMDCs. Knockdown of CHI3L1 impeded RSV-induced activation of MAPK/ERK and PI3K/AKT signaling pathways, attenuated CD86 and OX40L expression in mature DCs, reduced the proportion of Th2 and Th17 cells, and increased the proportion of Treg cells. In addition, by blocking CHI3L1, RSV-infected mice shown relief of airway resistance, the downregulation of Th2/Th17 like cytokines IL-4, IL-13 and IL-17 levels, and the upregulation of IL-10. CONCLUSION Our data show that CHI3L1 promotes RSV induced immune imbalance and airway hyperresponsiveness by regulating the functional transformation of DCs.
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Affiliation(s)
- Lingli Ge
- Department of Pediatrics, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China; Department of Pediatrics, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, Hubei, China.
| | - Yuxin Wang
- Department of Pediatrics, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China.
| | - Zhi Liu
- Department of Pediatrics, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China.
| | - Hui Du
- Department of Pediatrics, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China.
| | - Dongchi Zhao
- Department of Pediatrics, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China; Children's digital health and data Center of Wuhan University, Wuhan, Hubei, China.
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Chen P, Cheng Y, Hu J, Fang R, Yang LQ. Recombinant CXCL17 Treatment Alleviates Hyperoxia-Induced Lung Apoptosis and Inflammation In Vivo and Vitro by Activating the AKT Pathway: A Possible Therapeutic Approach for Bronchopulmonary Dysplasia. Mol Biotechnol 2023:10.1007/s12033-023-00866-0. [PMID: 37710083 DOI: 10.1007/s12033-023-00866-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 08/21/2023] [Indexed: 09/16/2023]
Abstract
Bronchopulmonary dysplasia (BPD), caused by hyperoxia exposure, is the most common complication affecting preterm infants. The C-X-C motif chemokine ligand 17 (CXCL17) belongs to the chemokine family that plays important roles in various processes, but the function in BPD is unknown. Elevated serum CXCL17 levels were observed in human premature infants with hyperoxia-induced lung injury, suggesting that CXCL17 might be involved in BPD. To further validate our speculation, studies were conducted in a hyperoxia-induced lung injury mouse model and primary murine alveolar epithelial cells Type II (T2AEC) cells exposed to hyperoxia. RT-qPCR and western blot were used to validate CXCL17 expression in newborn mice. Hyperoxia exposure-induced lung injury was determined by assessing the lung wet-weight/dry-weight ratio and histological changes. Oxidative stress and inflammatory factors were examined by ELISA assay and RT-qPCR. Reactive oxygen species (ROS) level was evaluated by DHE staining. Apoptosis was assessed by TUNEL staining and western blot. The results showed that hyperoxia exposure increased CXCL17 levels in newborn mice pups. Hyperoxia exposure increased lung wet-weight/dry-weight ratio, increased alveolar diameter and enlarged alveoli, and reduced surfactant protein C expression. However, recombinant CXCL17 (rCXCL17) treatment alleviated hyperoxia-induced lung injury. rCXCL17 treatment inhibited hyperoxia-induced inflammation, oxidative stress, and apoptosis in neonatal mice. These results were further verified in T2AEC cells. Additionally, rCXCL17 treatment activated the AKT pathway, which is a protective pathway in BPD. Collectively, rCXCL17 alleviates hyperoxia-induced lung injury in neonatal mice by activating the AKT pathway, indicating that CXCL17 may be a promising target for BPD therapy.
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Affiliation(s)
- Ping Chen
- Department of Pediatrics, The Second Affiliated Hospital of Anhui Medical University, 678 Furong Road, Hefei, 230601, Anhui, People's Republic of China
| | - Yan Cheng
- Department of Pediatrics, The Second Affiliated Hospital of Anhui Medical University, 678 Furong Road, Hefei, 230601, Anhui, People's Republic of China
| | - Jing Hu
- Department of Pediatrics, The Second Affiliated Hospital of Anhui Medical University, 678 Furong Road, Hefei, 230601, Anhui, People's Republic of China
| | - Rui Fang
- Department of Pediatrics, The Second Affiliated Hospital of Anhui Medical University, 678 Furong Road, Hefei, 230601, Anhui, People's Republic of China
| | - Li-Qi Yang
- Department of Pediatrics, The Second Affiliated Hospital of Anhui Medical University, 678 Furong Road, Hefei, 230601, Anhui, People's Republic of China.
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Zhang J, Wang H, Chen H, Liu Y, Wang A, Hou H, Hu Q. Acetaldehyde induces similar cytotoxic and genotoxic risks in BEAS-2B cells and HHSteCs: involvement of differential regulation of MAPK/ERK and PI3K/AKT pathways. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27508-x. [PMID: 37284951 DOI: 10.1007/s11356-023-27508-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 05/04/2023] [Indexed: 06/08/2023]
Abstract
Long-term use of alcohol and cigarettes is associated with millions of deaths each year, directly or indirectly. The carcinogen acetaldehyde is both a metabolite of alcohol and the most abundant carbonyl compound in cigarette smoke, and co-exposure of them is usual and primarily leads to liver and lung injury, respectively. However, few studies have explored the synchronic risk of acetaldehyde on the liver and lung. Here, we investigated the toxic effects and related mechanisms of acetaldehyde based on normal hepatocytes and lung cells. The results showed that acetaldehyde caused significant dose-dependent increases of cytotoxicity, ROS level, DNA adduct level, DNA single/double-strand breakage, and chromosomal damage in BEAS-2B cells and HHSteCs, with similar effects at the same doses. The gene and protein expression and phosphorylation of p38MAPK, ERK, PI3K, and AKT, key proteins of MAPK/ERK and PI3K/AKT pathways regulating cell survival and tumorigenesis, were significantly upregulated on BEAS-2B cells, while only protein expression and phosphorylation of ERK were upregulated significantly, the other three decreased in HHSteCs. When either the inhibitor of the four key proteins was co-treated with acetaldehyde, cell viabilities were almost unchanged in BEAS-2B cells and HHSteCs. Thus, acetaldehyde could synchronically induce similar toxic effects in BEAS-2B cells and HHSteCs, and MAPK/ERK and PI3K/AKT pathways seem to be involved in different regulatory mechanisms.
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Affiliation(s)
- Jingni Zhang
- University of Science and Technology of China, 230026, Hefei, China
- Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
- China National Tobacco Quality Supervision & Test Center, Zhengzhou, 450001, China
- Key Laboratory of Tobacco Biological Effects, Zhengzhou, 450001, China
- Beijing Life Science Academy, Beijing, 102200, China
- Key Labortory of Tobacco Biological Effects and Biosynthesis, Beijing, 102200, China
| | - Hongjuan Wang
- China National Tobacco Quality Supervision & Test Center, Zhengzhou, 450001, China
- Key Laboratory of Tobacco Biological Effects, Zhengzhou, 450001, China
- Beijing Life Science Academy, Beijing, 102200, China
- Key Labortory of Tobacco Biological Effects and Biosynthesis, Beijing, 102200, China
| | - Huan Chen
- China National Tobacco Quality Supervision & Test Center, Zhengzhou, 450001, China
- Key Laboratory of Tobacco Biological Effects, Zhengzhou, 450001, China
- Beijing Life Science Academy, Beijing, 102200, China
- Key Labortory of Tobacco Biological Effects and Biosynthesis, Beijing, 102200, China
| | - Yong Liu
- University of Science and Technology of China, 230026, Hefei, China
- Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
| | - An Wang
- University of Science and Technology of China, 230026, Hefei, China
- Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
| | - Hongwei Hou
- China National Tobacco Quality Supervision & Test Center, Zhengzhou, 450001, China
- Key Laboratory of Tobacco Biological Effects, Zhengzhou, 450001, China
- Beijing Life Science Academy, Beijing, 102200, China
- Key Labortory of Tobacco Biological Effects and Biosynthesis, Beijing, 102200, China
| | - Qingyuan Hu
- University of Science and Technology of China, 230026, Hefei, China.
- China National Tobacco Quality Supervision & Test Center, Zhengzhou, 450001, China.
- Key Laboratory of Tobacco Biological Effects, Zhengzhou, 450001, China.
- Beijing Life Science Academy, Beijing, 102200, China.
- Key Labortory of Tobacco Biological Effects and Biosynthesis, Beijing, 102200, China.
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Harris ZM, Sun Y, Joerns J, Clark B, Hu B, Korde A, Sharma L, Shin HJ, Manning EP, Placek L, Unutmaz D, Stanley G, Chun H, Sauler M, Rajagopalan G, Zhang X, Kang MJ, Koff JL. Epidermal Growth Factor Receptor Inhibition Is Protective in Hyperoxia-Induced Lung Injury. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:9518592. [PMID: 36193076 PMCID: PMC9526641 DOI: 10.1155/2022/9518592] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 08/05/2022] [Accepted: 08/09/2022] [Indexed: 01/01/2023]
Abstract
Aims Studies have linked severe hyperoxia, or prolonged exposure to very high oxygen levels, with worse clinical outcomes. This study investigated the role of epidermal growth factor receptor (EGFR) in hyperoxia-induced lung injury at very high oxygen levels (>95%). Results Effects of severe hyperoxia (100% oxygen) were studied in mice with genetically inhibited EGFR and wild-type littermates. Despite the established role of EGFR in lung repair, EGFR inhibition led to improved survival and reduced acute lung injury, which prompted an investigation into this protective mechanism. Endothelial EGFR genetic knockout did not confer protection. EGFR inhibition led to decreased levels of cleaved caspase-3 and poly (ADP-ribosyl) polymerase (PARP) and decreased terminal dUTP nick end labeling- (TUNEL-) positive staining in alveolar epithelial cells and reduced ERK activation, which suggested reduced apoptosis in vivo. EGFR inhibition decreased hyperoxia (95%)-induced apoptosis and ERK in murine alveolar epithelial cells in vitro, and CRISPR-mediated EGFR deletion reduced hyperoxia-induced apoptosis and ERK in human alveolar epithelial cells in vitro. Innovation. This work defines a protective role of EGFR inhibition to decrease apoptosis in lung injury induced by 100% oxygen. This further characterizes the complex role of EGFR in acute lung injury and outlines a novel hyperoxia-induced cell death pathway that warrants further study. Conclusion In conditions of severe hyperoxia (>95% for >24 h), EGFR inhibition led to improved survival, decreased lung injury, and reduced cell death. These findings further elucidate the complex role of EGFR in acute lung injury.
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Affiliation(s)
- Zachary M. Harris
- Section of Pulmonary, Critical Care, and Sleep Medicine; Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA 06510
| | - Ying Sun
- Section of Pulmonary, Critical Care, and Sleep Medicine; Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA 06510
| | - John Joerns
- Division of Pulmonary and Critical Care; Department of Internal Medicine, UT Southwestern Medical Center, Dallas, Texas, USA 75390
| | - Brian Clark
- Section of Pulmonary, Critical Care, and Sleep Medicine; Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA 06510
| | - Buqu Hu
- Section of Pulmonary, Critical Care, and Sleep Medicine; Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA 06510
| | - Asawari Korde
- Section of Pulmonary, Critical Care, and Sleep Medicine; Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA 06510
| | - Lokesh Sharma
- Section of Pulmonary, Critical Care, and Sleep Medicine; Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA 06510
| | - Hyeon Jun Shin
- Section of Pulmonary, Critical Care, and Sleep Medicine; Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA 06510
| | - Edward P. Manning
- Section of Pulmonary, Critical Care, and Sleep Medicine; Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA 06510
- VA Connecticut Healthcare System, West Haven, CT, USA
| | - Lindsey Placek
- The Jackson Laboratory for Genomic Medicine, Farmington, Connecticut 06032, USA
| | - Derya Unutmaz
- The Jackson Laboratory for Genomic Medicine, Farmington, Connecticut 06032, USA
| | - Gail Stanley
- Section of Pulmonary, Critical Care, and Sleep Medicine; Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA 06510
| | - Hyung Chun
- Section of Cardiovascular Medicine; Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA 06510
| | - Maor Sauler
- Section of Pulmonary, Critical Care, and Sleep Medicine; Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA 06510
| | - Govindarajan Rajagopalan
- Section of Pulmonary, Critical Care, and Sleep Medicine; Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA 06510
| | - Xuchen Zhang
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut, USA 06510
| | - Min-Jong Kang
- Section of Pulmonary, Critical Care, and Sleep Medicine; Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA 06510
| | - Jonathan L. Koff
- Section of Pulmonary, Critical Care, and Sleep Medicine; Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA 06510
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He Z, Guo Q, Ling Y, Hong C, Liu Y, Jin X, Thanaporn P, Zhao D, Wang L, Liu L, Yan LL. Aldehyde dehydrogenase 2 rs671 polymorphism and multiple diseases: protocol for a quantitative umbrella review of meta-analyses. Syst Rev 2022; 11:185. [PMID: 36050775 PMCID: PMC9438126 DOI: 10.1186/s13643-022-02050-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 08/08/2022] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND The mutant allele (*2) of aldehyde dehydrogenase type 2 (ALDH2) caused by a single nucleotide variant (rs671) inhibits enzymatic activity and is associated with multiple diseases. In recent years, an explosive number of original studies and meta-analyses have been conducted to examine the associations of ALDH2 rs671 polymorphism with diseases. Due to conflicting results, the overall associations of ALDH2 rs671 polymorphism and multiple diseases remain unclear. METHODS A quantitative umbrella review will be conducted on meta-analyses of genetic association studies to examine the pleiotropic effects of ALDH2 rs671, mainly including cardio-cerebral vascular disease, diabetes mellitus, cancer, neurodegenerative disease, and alcohol-induced medical disease. A search of relevant literature according to comprehensive search strategies will be performed on studies published before July 1st, 2022 in PubMed, MEDLINE Ovid, Embase, Cochrane Database of Systematic Reviews, and Web of Science. Study selection, data extraction, methodology quality assessment, and strength of evidence assessment will be conducted by two reviewers independently and in duplicate. Included meta-analyses will be grouped by outcomes. Data conflicts and overlap between meta-analyses will be managed through updated standardized and customized methods including the calculation of CCA for study selection reference, application of Doi plots to assess small-study effects and others. Evidence from included meta-analyses will be quantitatively synthesized by overlap-corrected analyses and meta-analysis using primary studies. DISCUSSION This umbrella review is expected to generate systematic evidence on the association between ALDH2 rs671 and diseases. Specific approaches were developed to address key challenges in conducting an umbrella review, including assessment tools of methodology and evidence quality of meta-analyses, methods to manage overlap between meta-analyses, a "stop-light" plot to summarize key findings. These approaches provide applicable methods for future umbrella reviews of meta-analyses on genetic association studies. TRIAL REGISTRATION CRD42021223812.
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Affiliation(s)
- Zhengting He
- Global Health Research Center, Duke Kunshan University, No. 8 Duke Avenue, Kunshan, Jiangsu, 215316, China.,Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, 615 North Wolfe Street, Baltimore, MD, 21205, USA
| | - Qi Guo
- Duke Kunshan University, No. 8 Duke Avenue, Kunshan, Jiangsu, 215316, China
| | - Yikai Ling
- Duke Kunshan University, No. 8 Duke Avenue, Kunshan, Jiangsu, 215316, China
| | - Chuan Hong
- Department of Biostatistics & Bioinformatics, Duke University, 2424 Erwin Road, Durham, NC, 27705, USA
| | - Yuqing Liu
- Duke Kunshan University, No. 8 Duke Avenue, Kunshan, Jiangsu, 215316, China
| | - Xurui Jin
- MindRank AI Ltd., Hangzhou, Zhejiang, 310000, China
| | - Porama Thanaporn
- Department of Internal Medicine, University of Michigan Medical School, 1301 Catherine St, Ann Arbor, MI, 48109, USA
| | - Duan Zhao
- Global Health Research Center, Duke Kunshan University, No. 8 Duke Avenue, Kunshan, Jiangsu, 215316, China.,School of Public Health, Hong Kong University, 7 Sassoon Road, Pokfulam, Hong Kong
| | - Leiting Wang
- Global Health Research Center, Duke Kunshan University, No. 8 Duke Avenue, Kunshan, Jiangsu, 215316, China
| | - Liang Liu
- Global Health Research Center, Duke Kunshan University, No. 8 Duke Avenue, Kunshan, Jiangsu, 215316, China
| | - Lijing L Yan
- Global Health Research Center, Duke Kunshan University, No. 8 Duke Avenue, Kunshan, Jiangsu, 215316, China. .,Duke Global Health Institute, Duke University, 310 Trent Drive, Durham, NC, 27710, USA. .,School of Public Health, Wuhan University, No. 115 Donghu Road, Wuhan, Hubei, 430071, China. .,Institute for Global Health and Development, Peking University, No. 5 Yiheyuan Road, Beijing, 100871, China.
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8
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Kou L, Kou P, Luo G, Wei S. Progress of Statin Therapy in the Treatment of Idiopathic Pulmonary Fibrosis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:6197219. [PMID: 35345828 PMCID: PMC8957418 DOI: 10.1155/2022/6197219] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 02/24/2022] [Indexed: 11/18/2022]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a type of interstitial lung disease (ILD) characterized by the proliferation of fibroblasts and aberrant accumulation of extracellular matrix. These changes are accompanied by structural destruction of the lung tissue and the progressive decline of pulmonary function. In the past few decades, researchers have investigated the pathogenesis of IPF and sought a therapeutic approach for its treatment. Some studies have shown that the occurrence of IPF is related to pulmonary inflammatory injury; however, its specific etiology and pathogenesis remain unknown, and no effective treatment, with the exception of lung transplantation, has been identified yet. Several basic science and clinical studies in recent years have shown that statins, the traditional lipid-lowering drugs, exert significant antifibrotic effects, which can delay the progression of IPF and impairment of pulmonary function. This article is aimed at summarizing the current understanding of the pathogenesis of IPF, the progress of research on the use of statins in IPF models and clinical trials, and its main molecular targets.
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Affiliation(s)
- Leiya Kou
- Department of Respiratory Medicine, Wuhan No. 1 Hospital, Wuhan 430022, China
- Hubei University of Chinese Medicine, Wuhan 430065, China
| | - Pei Kou
- Department of Medical Record, Wuhan No. 1 Hospital, Wuhan 430022, China
| | - Guangwei Luo
- Department of Respiratory Medicine, Wuhan No. 1 Hospital, Wuhan 430022, China
| | - Shuang Wei
- Department of Respiratory and Critical Care Medicine, Tongji Hospital Tongji Medical College Huazhong University of Science and Technology, Wuhan 430030, China
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Gao J, Hao Y, Piao X, Gu X. Aldehyde Dehydrogenase 2 as a Therapeutic Target in Oxidative Stress-Related Diseases: Post-Translational Modifications Deserve More Attention. Int J Mol Sci 2022; 23:ijms23052682. [PMID: 35269824 PMCID: PMC8910853 DOI: 10.3390/ijms23052682] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/19/2022] [Accepted: 02/21/2022] [Indexed: 02/07/2023] Open
Abstract
Aldehyde dehydrogenase 2 (ALDH2) has both dehydrogenase and esterase activity; its dehydrogenase activity is closely related to the metabolism of aldehydes produced under oxidative stress (OS). In this review, we recapitulate the enzyme activity of ALDH2 in combination with its protein structure, summarize and show the main mechanisms of ALDH2 participating in metabolism of aldehydes in vivo as comprehensively as possible; we also integrate the key regulatory mechanisms of ALDH2 participating in a variety of physiological and pathological processes related to OS, including tissue and organ fibrosis, apoptosis, aging, and nerve injury-related diseases. On this basis, the regulatory effects and application prospects of activators, inhibitors, and protein post-translational modifications (PTMs, such as phosphorylation, acetylation, S-nitrosylation, nitration, ubiquitination, and glycosylation) on ALDH2 are discussed and prospected. Herein, we aimed to lay a foundation for further research into the mechanism of ALDH2 in oxidative stress-related disease and provide a basis for better use of the ALDH2 function in research and the clinic.
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Affiliation(s)
- Jie Gao
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (J.G.); (Y.H.)
| | - Yue Hao
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (J.G.); (Y.H.)
| | - Xiangshu Piao
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
| | - Xianhong Gu
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (J.G.); (Y.H.)
- Correspondence:
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10
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Sidramagowda Patil S, Hernández-Cuervo H, Fukumoto J, Krishnamurthy S, Lin M, Alleyn M, Breitzig M, Narala VR, Soundararajan R, Lockey RF, Kolliputi N, Galam L. Alda-1 Attenuates Hyperoxia-Induced Acute Lung Injury in Mice. Front Pharmacol 2021; 11:597942. [PMID: 33597876 PMCID: PMC7883597 DOI: 10.3389/fphar.2020.597942] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Accepted: 10/19/2020] [Indexed: 12/31/2022] Open
Abstract
Acute lung injury (ALI), a milder form of acute respiratory distress syndrome (ARDS), is a leading cause of mortality in older adults with an increasing prevalence. Oxygen therapy, is a common treatment for ALI, involving exposure to a high concentration of oxygen. Unfortunately, hyperoxia induces the formation of reactive oxygen species which can cause an increase in 4-HNE (4-hydroxy 2 nonenal), a toxic byproduct of lipid peroxidation. Mitochondrial aldehyde dehydrogenase 2 (ALDH2) serves as an endogenous shield against oxidative stress-mediated damage by clearing 4-HNE. Alda-1 [(N-(1, 3 benzodioxol-5-ylmethyl)-2, 6- dichloro-benzamide)], a small molecular activator of ALDH2, protects against reactive oxygen species-mediated oxidative stress by promoting ALDH2 activity. As a result, Alda-1 shields against ischemic reperfusion injury, heart failure, stroke, and myocardial infarction. However, the mechanisms of Alda-1 in hyperoxia-induced ALI remains unclear. C57BL/6 mice implanted with Alzet pumps received Alda-1 in a sustained fashion while being exposed to hyperoxia for 48 h. The mice displayed suppressed immune cell infiltration, decreased protein leakage and alveolar permeability compared to controls. Mechanistic analysis shows that mice pretreated with Alda-1 also experience decreased oxidative stress and enhanced levels of p-Akt and mTOR pathway associated proteins. These results show that continuous delivery of Alda-1 protects against hyperoxia-induced lung injury in mice.
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Affiliation(s)
- Sahebgowda Sidramagowda Patil
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Helena Hernández-Cuervo
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States.,Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Jutaro Fukumoto
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Sudarshan Krishnamurthy
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Muling Lin
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Matthew Alleyn
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Mason Breitzig
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States.,Brown School, Washington University, St. Louis, MO, United States
| | | | - Ramani Soundararajan
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Richard F Lockey
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Narasaiah Kolliputi
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States.,Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Lakshmi Galam
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
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11
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Zhou K, Huang Y, Chen Z, Du X, Qin J, Wen L, Ma H, Pan X, Lin Y. Liver and spleen transcriptome reveals that Oreochromis aureus under long-term salinity stress may cause excessive energy consumption and immune response. FISH & SHELLFISH IMMUNOLOGY 2020; 107:469-479. [PMID: 33181338 DOI: 10.1016/j.fsi.2020.11.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 10/14/2020] [Accepted: 11/09/2020] [Indexed: 06/11/2023]
Abstract
To investigate the physiological responses of Oreochromis aureus to salinity fluctuations at the molecular level. We used RNA-seq to explore the differentially expressed genes (DEGs) in the liver and spleen of O. aureus at 0, 3, 7 and 11 ppt (parts per thousand) salinity levels. Herein, De novo assembly generated 71,009 O. aureus unigenes, of which 34,607 were successfully mapped to the four major databases. A total of 120 shared DEGs were identified in liver and spleen transcripts, of which 83 were up-regulated and 37 were down-regulated. GO and KEGG analysis found a total of 26 significant pathways, mainly including energy metabolism, immune response, ion transporters and signal transduction. The trend module category of DEGs showed that the genes (e.g., FASN, ODC1, CD22, MRC, TRAV and SLC7 family) involved in the change-stable-change (1) and the constant-change categories (2) were highly sensitive to salinity fluctuations, which were of great value for further study. Based on these results, it would help provide basic data for fish salinity acclimation, and provide new insights into evolutionary response of fish to various aquatic environments in the long-term stress adaptation mechanism.
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Affiliation(s)
- Kangqi Zhou
- Guangxi Key Laboratory for Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi Academy of Fishery Sciences, Nanning, 530021, China
| | - Yin Huang
- Guangxi Key Laboratory for Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi Academy of Fishery Sciences, Nanning, 530021, China
| | - Zhong Chen
- Guangxi Key Laboratory for Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi Academy of Fishery Sciences, Nanning, 530021, China
| | - Xuesong Du
- Guangxi Key Laboratory for Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi Academy of Fishery Sciences, Nanning, 530021, China
| | - Junqi Qin
- Guangxi Key Laboratory for Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi Academy of Fishery Sciences, Nanning, 530021, China
| | - Luting Wen
- Guangxi Key Laboratory for Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi Academy of Fishery Sciences, Nanning, 530021, China
| | - Huawei Ma
- Guangxi Key Laboratory for Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi Academy of Fishery Sciences, Nanning, 530021, China
| | - Xianhui Pan
- Guangxi Key Laboratory for Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi Academy of Fishery Sciences, Nanning, 530021, China.
| | - Yong Lin
- Guangxi Key Laboratory for Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi Academy of Fishery Sciences, Nanning, 530021, China.
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12
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Yang M, Wang A, Li C, Sun J, Yi G, Cheng H, Liu X, Wang Z, Zhou Y, Yao G, Wang S, Liang R, Li B, Li D, Zhao H. Methylation-Induced Silencing of ALDH2 Facilitates Lung Adenocarcinoma Bone Metastasis by Activating the MAPK Pathway. Front Oncol 2020; 10:1141. [PMID: 32850324 PMCID: PMC7406638 DOI: 10.3389/fonc.2020.01141] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 06/05/2020] [Indexed: 01/11/2023] Open
Abstract
Bone metastasis (BM) dramatically reduces the quality of life and life expectancy in lung adenocarcinoma (LUAD) patients. There is an urgent need to identify potential biomarkers for application in the treatment of this deadly disease. We compared patient BM, LUAD, and para-LUAD tissues using proteomic analysis and identified aldehyde dehydrogenase 2 (ALDH2), which can detoxify acetaldehyde to acetic acid, as one of the key regulators in lung tumor metastasis. Both the mRNA and protein levels of ALDH2 were significantly lower in tumor tissues than in normal tissues and were lowest in BM tissues with increased migratory capacity. Also, ALDH2 was upregulated following treatment with 5-azacitidine, a DNA methyltransferase inhibitor, in H1299, H460, and HCC827 cells. Further, we identified a potential methylated CpG island 3, with the longest methylated CpG island area in ALDH2, and performed bisulfite genomic sequencing of these sites. An average of 78.18% of the sites may be methylated in CpG island 3. Knockdown of DNA (cytosine-5)-methyltransferase 3A (DNMT3A) and methylated CpG binding protein 4 (MBD4) upregulated ALDH2 expression. ALDH2 functions as a mitogen-activated protein kinase (MAPK) upstream to inhibit cell proliferation and migration, promote cell apoptosis, and alter the epithelial–mesenchymal transition (EMT) by elevating E-cadherin and attenuating vimentin. Cell proliferation and migration were inhibited after the addition of the JNK inhibitor SP600125. In the multivariate analysis, M stage (p = 0.003), ALDH2 (p = 0.008), and phospho-c-Jun N-terminal kinase (p-JNK) (p = 0.027) expression were independent prognostic factors for overall survival in patients with BM. In vivo experiments also showed that ALDH2 expression could suppress tumor formation. In summary, we found that ALDH2 expression is a prognostic factor for BM in LUAD and that DNMT3A and MBD4 repression of ALDH2 via a MAPK-dependent pathway alters the EMT process, indicating that these proteins could act as potential biomarkers or therapeutic targets for LUAD metastasis.
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Affiliation(s)
- Mengdi Yang
- Department of Internal Oncology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - AiTing Wang
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Changcan Li
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of General Surgery, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jing Sun
- Department of Internal Oncology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Gang Yi
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hao Cheng
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xueni Liu
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhiyu Wang
- Department of Internal Oncology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Yiyi Zhou
- Department of Internal Oncology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Guangyu Yao
- Department of Internal Oncology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Shuai Wang
- Department of Internal Oncology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Rui Liang
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bin Li
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Dan Li
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hui Zhao
- Department of Internal Oncology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
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13
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Molecular Mechanism of HSF1-Upregulated ALDH2 by PKC in Ameliorating Pressure Overload-Induced Heart Failure in Mice. BIOMED RESEARCH INTERNATIONAL 2020; 2020:3481623. [PMID: 32626739 PMCID: PMC7313111 DOI: 10.1155/2020/3481623] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 05/09/2020] [Indexed: 11/18/2022]
Abstract
Evidences abound that HSF1 and ALDH2 are of cardioprotective effect, yet there is still no report on whether HSF1 can regulate ALDH2 to delay the occurrence of heart failure. We first established the pressure overload-induced heart failure model of mice by transverse aortic constriction (TAC) and discovered that, in the forming period of heart failure, changes of HSF1 and ALDH2 expression recorded the consistent trend. When HSF1 was upregulated/downregulated to delay/promote the occurrence of heart failure, PKC and ALDH2 also showed increased/decreased expression. And when ALDH2 was upregulated/downregulated, the role of HSF1 in delaying the occurrence of heart failure strengthened/weakened. Next, we used mechanical stretch to establish a pressure-stimulated myocardial hypertrophy model and discovered an increased expression of both HSF1 and ALDH2. When HSF1 was upregulated/downregulated to increase/decrease the expression of myocardial hypertrophy gene beta-MHC, PKC and ALDH2 recorded an increased/decreased expression. When an inhibitor was used to downregulate the expression of PKC in cardiomyocytes, we found that the role of HSF1 in upregulating ALDH2 beta-MHC weakened. These findings suggest that HSF1 can upregulate the expression of ALDH2 via PKC to promote pressure-stimulated myocardial compensatory hypertrophy, which is an important molecular pathway for HSF1 to ameliorate heart failure.
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14
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Zhou W, Shao F, Li J. Bioinformatic analysis of the molecular mechanism underlying bronchial pulmonary dysplasia using a text mining approach. Medicine (Baltimore) 2019; 98:e18493. [PMID: 31876736 PMCID: PMC6946243 DOI: 10.1097/md.0000000000018493] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a common disease of premature infants with very low birth weight. The mechanism is inconclusive. The aim of this study is to systematically explore BPD-related genes and characterize their functions.Natural language processing analysis was used to identify BPD-related genes. Gene data were extracted from PubMed database. Gene ontology, pathway, and network analysis were carried out, and the result was integrated with corresponding database.In this study, 216 genes were identified as BPD-related genes with P < .05, and 30 pathways were identified as significant. A network of BPD-related genes was also constructed with 17 hub genes identified. In particular, phosphatidyl inositol-3-enzyme-serine/threonine kinase signaling pathway involved the largest number of genes. Insulin was found to be a promising candidate gene related with BPD, suggesting that it may serve as an effective therapeutic target.Our data may help to better understand the molecular mechanisms underlying BPD. However, the mechanisms of BPD are elusive, and further studies are needed.
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Affiliation(s)
- Weitao Zhou
- Department of Pediatrics, The First Affiliated Hospital of the University of Science and Technology of China
| | - Fei Shao
- Department of Oncology, Second Affiliated Hospital of Anhui Medical University, Hefei
| | - Jing Li
- Department of Pediatric Intensive Care Unit, Children's Hospital of Chongqing Medical University; Ministry of Education Key Laboratory of Child Development and Disorders; National Clinical Research Center for Child Health and Disorders; China International Science and Technology Cooperation base of Child Development and Critical Disorders; Children's Hospital of Chongqing Medical University
- Chongqing Key Laboratory of Pediatrics, Chongqing, China
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15
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Deng C, Tang S, Huang X, Gao J, Tian J, Zhou X, Xie Y, Liao M, Mo Z, Wang Q. Identification of three novel loci of ALDH2 Gene for Serum Folate levels in a Male Chinese Population by Genome-Wide Association Study. Gene 2018; 674:121-126. [PMID: 29953918 DOI: 10.1016/j.gene.2018.06.080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Revised: 06/15/2018] [Accepted: 06/25/2018] [Indexed: 12/22/2022]
Abstract
BACKGROUND Serum folate is important in clinical researches and DNA synthesis and methylation. Some loci and genes that are associated with folate levels had been detected by genome-wide association studies (GWAS), such as rs1801133 in MTHFR and rs1979277 in SHMT1. Nevertheless, only a small part of variants has been clearly identified for serum folate. Hence, we conducted a GWAS to discover new inherited susceptibility and gene-environment interactions on serum folate concentration. MATERIALS AND METHODS In a healthy Chinese population of 1999 men, genotyping was performed using Illumina HumanOmni1-Quad BeadChip. Serum folate levels were measured by enzyme-linked immunosorbent assay (ELISA), pathway enrichment analysis and statistical analysis were performed by Database for Annotation, Visualization and Integrated Discovery (DAVID) and Statistic Package for Social Science (SPSS). RESULTS We validated that rs1801133 in MTHFR was significantly involved in serum folate (P = 4.21 × 10-19). Surprisingly, we discovered three novel loci rs3782886, rs671, and rs4646776 of ALDH2 gene were suggestively significantly associated with folate serum folate levels in the male population studied (P = 2.17 × 10-7, P = 3.60 × 10-7, P = 3.99 × 10-7, respectively) after adjusting for population stratification, BMI and age. Men with the AA genotype had significantly higher serum folate levels compared with men with the GG/AG genotype. But we found ALDH2 gene mutation no relation to part of environmental factors on serum folate levels. CONCLUSION In a male Chinese population, genome-wide association study discovered that three novel SNPs rs3782886, rs671 and rs4646776 of ALDH2 gene were suggestively significantly associated with serum folate levels.
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Affiliation(s)
- Caiwang Deng
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, China; Guangxi Key Laboratory for Genomic and Personalized Medicine, Guangxi Collaborative Innovation Center for Genomic and Personalized Medicine, Nanning, Guangxi Zhuang Autonomous Region 530021, China
| | - Shaomei Tang
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, China; Guangxi Key Laboratory for Genomic and Personalized Medicine, Guangxi Collaborative Innovation Center for Genomic and Personalized Medicine, Nanning, Guangxi Zhuang Autonomous Region 530021, China
| | - Xiaoliang Huang
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, China; Guangxi Key Laboratory for Genomic and Personalized Medicine, Guangxi Collaborative Innovation Center for Genomic and Personalized Medicine, Nanning, Guangxi Zhuang Autonomous Region 530021, China
| | - Jiamin Gao
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, China; Guangxi Key Laboratory for Genomic and Personalized Medicine, Guangxi Collaborative Innovation Center for Genomic and Personalized Medicine, Nanning, Guangxi Zhuang Autonomous Region 530021, China
| | - Jiarong Tian
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, China; Guangxi Key Laboratory for Genomic and Personalized Medicine, Guangxi Collaborative Innovation Center for Genomic and Personalized Medicine, Nanning, Guangxi Zhuang Autonomous Region 530021, China
| | - Xianguo Zhou
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, China; Guangxi Key Laboratory for Genomic and Personalized Medicine, Guangxi Collaborative Innovation Center for Genomic and Personalized Medicine, Nanning, Guangxi Zhuang Autonomous Region 530021, China
| | - Yuanliang Xie
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, China; Guangxi Key Laboratory for Genomic and Personalized Medicine, Guangxi Collaborative Innovation Center for Genomic and Personalized Medicine, Nanning, Guangxi Zhuang Autonomous Region 530021, China
| | - Ming Liao
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, China; Guangxi Key Laboratory for Genomic and Personalized Medicine, Guangxi Collaborative Innovation Center for Genomic and Personalized Medicine, Nanning, Guangxi Zhuang Autonomous Region 530021, China
| | - Zengnan Mo
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, China; Department of Urology and Nephrology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, China; Guangxi Key Laboratory for Genomic and Personalized Medicine, Guangxi Collaborative Innovation Center for Genomic and Personalized Medicine, Nanning, Guangxi Zhuang Autonomous Region 530021, China.
| | - Qiuyan Wang
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, China; Guangxi Key Laboratory for Genomic and Personalized Medicine, Guangxi Collaborative Innovation Center for Genomic and Personalized Medicine, Nanning, Guangxi Zhuang Autonomous Region 530021, China; Guangxi Colleges and Universities Key Laboratory of Biological Molecular Medicine Research, Nanning, Guangxi Zhuang Autonomous Region 530021, China.
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16
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Hyperoxia Disrupts Extracellular Signal-Regulated Kinases 1/2-Induced Angiogenesis in the Developing Lungs. Int J Mol Sci 2018; 19:ijms19051525. [PMID: 29783779 PMCID: PMC5983575 DOI: 10.3390/ijms19051525] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 05/16/2018] [Accepted: 05/18/2018] [Indexed: 11/17/2022] Open
Abstract
Hyperoxia contributes to the pathogenesis of bronchopulmonary dysplasia (BPD), a chronic lung disease of infants that is characterized by interrupted alveologenesis. Disrupted angiogenesis inhibits alveologenesis, but the mechanisms of disrupted angiogenesis in the developing lungs are poorly understood. In pre-clinical BPD models, hyperoxia increases the expression of extracellular signal-regulated kinases (ERK) 1/2; however, its effects on the lung endothelial ERK1/2 signaling are unclear. Further, whether ERK1/2 activation promotes lung angiogenesis in infants is unknown. Hence, we tested the following hypotheses: (1) hyperoxia exposure will increase lung endothelial ERK1/2 signaling in neonatal C57BL/6J (WT) mice and in fetal human pulmonary artery endothelial cells (HPAECs); (2) ERK1/2 inhibition will disrupt angiogenesis in vitro by repressing cell cycle progression. In mice, hyperoxia exposure transiently increased lung endothelial ERK1/2 activation at one week of life, before inhibiting it at two weeks of life. Interestingly, hyperoxia-mediated decrease in ERK1/2 activation in mice was associated with decreased angiogenesis and increased endothelial cell apoptosis. Hyperoxia also transiently activated ERK1/2 in HPAECs. ERK1/2 inhibition disrupted angiogenesis in vitro, and these effects were associated with altered levels of proteins that modulate cell cycle progression. Collectively, these findings support our hypotheses, emphasizing that the ERK1/2 pathway is a potential therapeutic target for BPD infants with decreased lung vascularization.
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17
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Rodgers JL, Samal E, Mohapatra S, Panguluri SK. Hyperoxia-induced cardiotoxicity and ventricular remodeling in type-II diabetes mice. Heart Vessels 2017; 33:561-572. [PMID: 29209776 DOI: 10.1007/s00380-017-1100-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 12/01/2017] [Indexed: 12/14/2022]
Abstract
Hyperoxia, or supplemental oxygen, is regularly used in the clinical setting for critically ill patients in ICU. However, several recent studies have demonstrated the negative impact of this treatment in patients in critical care, including increased rates of lung and cardiac injury, as well as increased mortality. The purpose of this study was to determine the predisposition for arrhythmias and electrical remodeling in a type 2 diabetic mouse model (db/db), as a result of hyperoxia treatment. For this, db/db and their heterozygous controls were treated with hyperoxia (> 90% oxygen) or normoxia (normal air) for 72-h. Immediately following hyperoxia or normoxia treatments, mice underwent surface ECG. Excised left ventricles were used to assess ion channel expression, including for Kv1.4, Kv1.5, Kv4.2, and KChIP2. Serum cardiac markers were also measured, including cardiac troponin I and lactate dehydrogenase. Our results showed that db/db mice have increased sensitivity to arrhythmia. Normoxia-treated db/db mice displayed features of arrhythmia, including QTc and JT prolongation, as well as QRS prolongation. A significant increase in QRS prolongation was also observed in hyperoxia-treated db/db mice, when compared to hyperoxia-treated heterozygous control mice. Db/db mice were also shown to exhibit ion channel dysregulation, as demonstrated by down-regulation in Kv1.5, Kv4.2, and KChIP2 under hyperoxia conditions. From these results, we conclude that: (1) diabetic mice showed distinct pathophysiology, when compared to heterozygous controls, both in normoxia and hyperoxia conditions. (2) Diabetic mice were more susceptible to arrhythmia at normal air conditions; this effect was exacerbated at hyperoxia conditions. (3) Unlike in heterozygous controls, diabetic mice did not demonstrate cardiac hypertrophy as a result of hyperoxia. (4) Ion channel remodeling was also observed in db/db mice under hyperoxia condition similar to its heterozygous controls.
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Affiliation(s)
- Jennifer Leigh Rodgers
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., MDC-30, Tampa, FL, 33612, USA
| | - Eva Samal
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Subhra Mohapatra
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Siva Kumar Panguluri
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., MDC-30, Tampa, FL, 33612, USA.
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18
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Li Z, Pan G, Ma Z, Han B, Sun B, Ni Q, Chen J, Li T, Liu T, Long M, Li C, Zhou Z. Comparative proteomic analysis of differentially expressed proteins in the Bombyx mori fat body during the microsporidia Nosema bombycis infection. J Invertebr Pathol 2017; 149:36-43. [DOI: 10.1016/j.jip.2017.06.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Revised: 06/23/2017] [Accepted: 06/26/2017] [Indexed: 02/02/2023]
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19
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Leo CH, Fernando DT, Tran L, Ng HH, Marshall SA, Parry LJ. Serelaxin Treatment Reduces Oxidative Stress and Increases Aldehyde Dehydrogenase-2 to Attenuate Nitrate Tolerance. Front Pharmacol 2017; 8:141. [PMID: 28377719 PMCID: PMC5359255 DOI: 10.3389/fphar.2017.00141] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 03/07/2017] [Indexed: 02/01/2023] Open
Abstract
Background: Glyceryl trinitrate (GTN) is a commonly prescribed treatment for acute heart failure patients. However, prolonged GTN treatment induces tolerance, largely due to increased oxidative stress and reduced aldehyde dehydrogenase-2 (ALDH-2) expression. Serelaxin has several vasoprotective properties, which include reducing oxidative stress and augmenting endothelial function. We therefore tested the hypothesis in rodents that serelaxin treatment could attenuate low-dose GTN-induced tolerance. Methods and Results: Co-incubation of mouse aortic rings ex vivo with GTN (10 μM) and serelaxin (10 nM) for 1 h, restored GTN responses, suggesting that serelaxin prevented the development of GTN tolerance. Male Wistar rats were subcutaneously infused with ethanol (control), low-dose GTN+placebo or low-dose GTN+serelaxin via osmotic minipumps for 3 days. Aortic vascular function and superoxide levels were assessed using wire myography and lucigenin-enhanced chemiluminescence assay respectively. Changes in aortic ALDH-2 expression were measured by qPCR and Western blot respectively. GTN+placebo infusion significantly increased superoxide levels, decreased ALDH-2 and attenuated GTN-mediated vascular relaxation. Serelaxin co-treatment with GTN significantly enhanced GTN-mediated vascular relaxation, reduced superoxide levels and increased ALDH-2 expression compared to GTN+placebo-treated rats. Conclusion: Our data demonstrate that a combination of serelaxin treatment with low dose GTN attenuates the development of GTN-induced tolerance by reducing superoxide production and increasing ALDH-2 expression in the rat aorta. We suggest that serelaxin may improve nitrate efficacy in a clinical setting.
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Affiliation(s)
- Chen Huei Leo
- School of BioSciences, The University of Melbourne, Parkville VIC, Australia
| | | | - Lillie Tran
- School of BioSciences, The University of Melbourne, Parkville VIC, Australia
| | - Hooi Hooi Ng
- School of BioSciences, The University of Melbourne, Parkville VIC, Australia
| | - Sarah A Marshall
- School of BioSciences, The University of Melbourne, Parkville VIC, Australia
| | - Laura J Parry
- School of BioSciences, The University of Melbourne, Parkville VIC, Australia
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Wu J, Ravikumar P, Nguyen KT, Hsia CCW, Hong Y. Lung protection by inhalation of exogenous solubilized extracellular matrix. PLoS One 2017; 12:e0171165. [PMID: 28151947 PMCID: PMC5289529 DOI: 10.1371/journal.pone.0171165] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 01/17/2017] [Indexed: 01/29/2023] Open
Abstract
Decellularized extracellular matrix (ECM) contains complex tissue-specific components that work in concert to promote tissue repair and constructive remodeling and has been used experimentally and clinically to accelerate epithelial wound repair, leading us to hypothesize that lung-derived ECM could mitigate acute lung injury. To explore the therapeutic potential of ECM for noninvasive delivery to the lung, we decellularized and solubilized porcine lung ECM, then characterized the composition, concentration, particle size and stability of the preparation. The ECM preparation at 3.2 mg/mL with average particle size <3 μm was tested in vitro on human A549 lung epithelial cells exposed to 95% O2 for 24 hours, and in vivo by tracheal instillation or nebulization into the lungs of rats exposed intermittently or continuously to 90% O2 for a cumulative 72 hours. Our results showed that the preparation was enriched in collagen, reduced in glycosaminoglycans, and contained various bioactive molecules. Particle size was concentration-dependent. Compared to the respective controls treated with cell culture medium in vitro or saline in vivo, ECM inhalation normalized cell survival and alveolar morphology, and reduced hyperoxia-induced apoptosis and oxidative damage. This proof-of-concept study established the methodology, feasibility and therapeutic potential of exogenous solubilized ECM for pulmonary cytoprotection, possibly as an adjunct or potentiator of conventional therapy.
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Affiliation(s)
- Jinglei Wu
- Department of Bioengineering, University of Texas at Arlington, Arlington, Texas, United States of America
- Joint Graduate Program in Biomedical Engineering between University of Texas at Arlington and University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Priya Ravikumar
- Department of Internal Medicine, Pulmonary and Critical Care Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Kytai T. Nguyen
- Department of Bioengineering, University of Texas at Arlington, Arlington, Texas, United States of America
- Joint Graduate Program in Biomedical Engineering between University of Texas at Arlington and University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Connie C. W. Hsia
- Joint Graduate Program in Biomedical Engineering between University of Texas at Arlington and University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- Department of Internal Medicine, Pulmonary and Critical Care Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Yi Hong
- Department of Bioengineering, University of Texas at Arlington, Arlington, Texas, United States of America
- Joint Graduate Program in Biomedical Engineering between University of Texas at Arlington and University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
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Activation of ALDH2 with Low Concentration of Ethanol Attenuates Myocardial Ischemia/Reperfusion Injury in Diabetes Rat Model. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:6190504. [PMID: 27829984 PMCID: PMC5088338 DOI: 10.1155/2016/6190504] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 08/09/2016] [Accepted: 08/24/2016] [Indexed: 12/12/2022]
Abstract
The aim of this paper is to observe the change of mitochondrial aldehyde dehydrogenase 2 (ALDH2) when diabetes mellitus (DM) rat heart was subjected to ischemia/reperfusion (I/R) intervention and analyze its underlying mechanisms. DM rat hearts were subjected to 30 min regional ischemia and 120 min reperfusion in vitro and pretreated with ALDH2 activator ethanol (EtOH); cardiomyocyte in high glucose (HG) condition was pretreated with ALDH2 activator Alda-1. In control I/R group, myocardial tissue structure collapse appeared. Compared with control I/R group, left ventricular parameters, SOD activity, the level of Bcl-2/Bax mRNA, ALDH2 mRNA, and protein expressions were decreased and LDH and MDA contents were increased, meanwhile the aggravation of myocardial structure injury in DM I/R group. When DM I/R rats were pretreated with EtOH, left ventricular parameters, SOD, Bcl-2/Bax, and ALDH2 expression were increased; LDH, MDA, and myocardial structure injury were attenuated. Compared with DM + EtOH I/R group, cyanamide (ALDH2 nonspecific blocker), atractyloside (mitoPTP opener), and wortmannin (PI3K inhibitor) groups all decreased left ventricular parameters, SOD, Bcl-2/Bax, and ALDH2 and increased LDH, MDA, and myocardial injury. When cardiomyocyte was under HG condition, CCK-8 activity and ALDH2 protein expression were decreased. Alda-1 increased CCK-8 and ALDH2. Our findings suggested enhanced ALDH2 expression in diabetic I/R rats played the cardioprotective role, maybe through activating PI3K and inhibiting mitoPTP opening.
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22
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Molecular mechanisms underlying hyperoxia acute lung injury. Respir Med 2016; 119:23-28. [DOI: 10.1016/j.rmed.2016.08.010] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Revised: 07/15/2016] [Accepted: 08/19/2016] [Indexed: 12/12/2022]
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Sun C, Shang J, Yao Y, Yin X, Liu M, Liu H, Zhou Y. O-GlcNAcylation: a bridge between glucose and cell differentiation. J Cell Mol Med 2016; 20:769-81. [PMID: 26929182 PMCID: PMC4831356 DOI: 10.1111/jcmm.12807] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 01/08/2016] [Indexed: 12/12/2022] Open
Abstract
Glucose is the major energy supply and a critical metabolite for most cells and is especially important when cell is differentiating. High or low concentrations of glucose enhances or inhibits the osteogenic, chondrogenic and adipogenic differentiation of cell via the insulin, transforming growth factor‐β and peroxisome proliferator‐activated receptor γ pathways, among others. New evidence implicates the hexosamine biosynthetic pathway as a mediator of crosstalk between glucose flux, cellular signalling and epigenetic regulation of cell differentiation. Extracellular glucose flux alters intracellular O‐GlcNAcylation levels through the hexosamine biosynthetic pathway. Signalling molecules that are important for cell differentiation, including protein kinase C, extracellular signal‐regulated kinase, Runx2, CCAAT/enhancer‐binding proteins, are modified by O‐GlcNAcylation. Thus, O‐GlcNAcylation markedly alters cell fate during differentiation via the post‐transcriptional modification of proteins. Furthermore, O‐GlcNAcylation and phosphorylation show complex interactions during cell differentiation: they can either non‐competitively occupy different sites on a substrate or competitively occupy a single site or proximal sites. Therefore, the influence of glucose on cell differentiation via O‐GlcNAcylation offers a potential target for controlling tissue homoeostasis and regeneration in ageing and disease. Here, we review recent progress establishing an emerging relationship among glucose concentration, O‐GlcNAcylation levels and cell differentiation.
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Affiliation(s)
- Chao Sun
- Department of Orthopedics, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Jin Shang
- Department of Orthopedics, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Yuan Yao
- Department of Orthopedics, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Xiaohong Yin
- Center for Evidence-based and Translational Medicine, Zhongnan Hospital, Wuhan University, Wuhan, China
| | - Minghan Liu
- Department of Orthopedics, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Huan Liu
- Department of Orthopedics, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Yue Zhou
- Department of Orthopedics, Xinqiao Hospital, Third Military Medical University, Chongqing, China
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Vafaee F. Using Multi-objective Optimization to Identify Dynamical Network Biomarkers as Early-warning Signals of Complex Diseases. Sci Rep 2016; 6:22023. [PMID: 26906975 PMCID: PMC4764930 DOI: 10.1038/srep22023] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 02/03/2016] [Indexed: 12/31/2022] Open
Abstract
Biomarkers have gained immense scientific interest and clinical value in the practice of medicine. With unprecedented advances in high-throughput technologies, research interest in identifying novel and customized disease biomarkers for early detection, diagnosis, or drug responses is rapidly growing. Biomarkers can be identified in different levels of molecular biomarkers, networks biomarkers and dynamical network biomarkers (DNBs). The latter is a recently developed concept which relies on the idea that a cell is a complex system whose behavior is emerged from interplay of various molecules, and this network of molecules dynamically changes over time. A DNB can serve as an early-warning signal of disease progression, or as a leading network that drives the system into the disease state, and thus unravels mechanisms of disease initiation and progression. It is therefore of great importance to identify DNBs efficiently and reliably. In this work, the problem of DNB identification is defined as a multi-objective optimization problem, and a framework to identify DNBs out of time-course high-throughput data is proposed. Temporal gene expression data of a lung injury with carbonyl chloride inhalation exposure has been used as a case study, and the functional role of the discovered biomarker in the pathogenesis of lung injury has been thoroughly analyzed.
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Affiliation(s)
- Fatemeh Vafaee
- Charles Perkins Centre, University of Sydney, Sydney, Australia
- School of Mathematics and Statistics, University of Sydney, Sydney, Australia
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25
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Li R, Zhao Z, Sun M, Luo J, Xiao Y. ALDH2 gene polymorphism in different types of cancers and its clinical significance. Life Sci 2016; 147:59-66. [PMID: 26804999 DOI: 10.1016/j.lfs.2016.01.028] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Revised: 01/08/2016] [Accepted: 01/15/2016] [Indexed: 12/22/2022]
Abstract
Aldehyde dehydrogenase 2 (ALDH2), an important mitochondrial enzyme governing ethanol metabolism, displays polymorphism in human. Recent evidence suggested that genetic polymorphism in ALDH2 gene may be significantly correlated with the susceptibility to cancer, such as colorectal cancer, esophageal cancer, and liver cancer. To investigate the correlation between ALDH2 mutant gene and the risk of a certain cancer, many studies have been done by testing the ALDH2 genotype in patients with cancers. Here, we summarized 84 ALDH2 gene single nucleotide polymorphism (SNP) sites in human cancer, which focus primarily on the rs671 SNP site. As a novel biological marker, ALDH2 displays a very attractive prospect in the screening, diagnosis and evaluation of the prognosis of many diseases. Moreover, much attention has been attracted to the studies of the biological functions and potential value of ALDH2 in the human cancer treatment. This review will provide an overview about the clinical prospects of ALDH2 based on the available information.
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Affiliation(s)
- Rui Li
- Department of Biochemistry and Molecular Biology, College of Basic Medical Science, Jilin University, Changchun, China; Department of Radiology, School of Public Health, Jilin University, Changchun, China
| | - Zihan Zhao
- School of Clinical Medicine, Jilin University, Changchun, China
| | - Mingyang Sun
- School of Clinical Medicine, Jilin University, Changchun, China
| | - Jiachi Luo
- College of Letters and Science, University of California, Berkeley, Berkeley, CA, USA
| | - Yechen Xiao
- Department of Biochemistry and Molecular Biology, College of Basic Medical Science, Jilin University, Changchun, China.
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26
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Zhong Z, Hu Q, Fu Z, Wang R, Xiong Y, Zhang Y, Liu Z, Wang Y, Ye Q. Increased Expression of Aldehyde Dehydrogenase 2 Reduces Renal Cell Apoptosis During Ischemia/Reperfusion Injury After Hypothermic Machine Perfusion. Artif Organs 2015; 40:596-603. [PMID: 26582147 DOI: 10.1111/aor.12607] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Hypothermic machine perfusion (MP) can reduce graft's injury after kidney transplantation; however, the mechanism has not been elucidated. In the past decade, many studies showed that aldehyde dehydrogenase 2 (ALDH2) is a protease which can inhibit cell apoptosis. Therefore, this study aims to explore whether ALDH2 takes part in reducing organ damage after MP. Eighteen healthy male New Zealand rabbits (12 weeks old, weight 3.0 ± 0.3 kg) were randomly divided into three groups: normal group, MP group, and cold storage (CS) group (n = 6). The left kidney of rabbits underwent warm ischemia for 35 min through clamping the left renal pedicle and then reperfusion for 1 h. Left kidneys were preserved by MP or CS (4°C for 4 h) in vivo followed by the right nephrectomy and 24-h reperfusion, and then the specimens and blood were collected. Finally, concentration of urine creatinine (Cr), blood urea nitrogen (BUN), and 4-HNE were tested. Renal apoptosis was detected by TUNEL staining, and the expression of ALDH2, cleaved-caspase 3, bcl-2/ bax, MAPK in renal tissue was detected by immunohistochemistry or Western blot; 24 h after surgery, the concentration of Cr in MP group was 355 ± 71μmol/L, in CS group was 511 ± 44 μmol/L (P < 0.05), while the BUN was 15.02 ± 2.34 mmol/L in MP group, 22.64 ± 3.58 mmol/L in CS group (P < 0.05). The rate of apoptosis and expression of cleaved caspase-3, p-P38, p-ERK, and p-JNK in MP group was significantly lower than that in CS group (P < 0.05), while expression of ALDH2 and bcl-2/bax in MP group was significantly higher than that in CS group (P < 0.05); expression of cleaved caspase-3 in both MP and CS group significantly increased as compared with that in normal group (P < 0.05). In conclusion, increased expression of ALDH2 can reduce the renal cell apoptosis through inhibiting MAPK pathway during ischemia/reperfusion injury (IRI) after hypothermic MP.
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Affiliation(s)
- Zibiao Zhong
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan
| | - Qianchao Hu
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan
| | - Zhen Fu
- Research Center of National Health Ministry on Transplantation Medicine Engineering and Technology, The 3rd Xiangya Hospital of Central South University, Changsha, China
| | - Ren Wang
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan
| | - Yan Xiong
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan
| | - Yang Zhang
- Research Center of National Health Ministry on Transplantation Medicine Engineering and Technology, The 3rd Xiangya Hospital of Central South University, Changsha, China
| | - Zhongzhong Liu
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan
| | - Yanfeng Wang
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan
| | - Qifa Ye
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan.,Research Center of National Health Ministry on Transplantation Medicine Engineering and Technology, The 3rd Xiangya Hospital of Central South University, Changsha, China
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27
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Zhong Z, Ye S, Xiong Y, Wu L, Zhang M, Fan X, Li L, Fu Z, Wang H, Chen M, Yan X, Huang W, Ko DSC, Wang Y, Ye Q. Decreased expression of mitochondrial aldehyde dehydrogenase-2 induces liver injury via activation of the mitogen-activated protein kinase pathway. Transpl Int 2015; 29:98-107. [PMID: 26404764 DOI: 10.1111/tri.12675] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 03/31/2015] [Accepted: 08/20/2015] [Indexed: 12/18/2022]
Abstract
The aim of this study was to determine the role of ALDH2 in the injury of liver from brain-dead donors. Using brain-dead rabbit model and hypoxia model, levels of ALDH2 and apoptosis in tissues and cell lines were determined by Western blot, flow cytometry (FCM), and transferase (TdT)-mediated biotin-16-dUTP nick-end labeling (TUNEL) assays. After the expression of ALDH2 during hypoxia had been inhibited or activated, the accumulations of 4-hydroxynonenal (4-HNE) and molecules involved in mitogen-activated protein kinase (MAPK) signaling pathway were analyzed using ELISA kit and Western blot. The low expression of phosphorylated ALDH2 in liver was time-dependent in the brain-dead rabbit model. Immunohistochemistry showed ALDH2 was primarily located in endothelial, and the rates of cell apoptosis in the donation after brain-death (DBD) rabbit groups significantly increased with time. Following the treatment of inhibitor of ALDH2, daidzein, in combination with hypoxia for 8 h, the apoptosis rate and the levels of 4-HNE, P-JNK, and cleaved caspase-3 significantly increased in contrast to that in hypoxic HUVECs; however, they all decreased after treatment with Alda-1 and hypoxia compared with that in hypoxic HUVECs (P < 0.05). Instead, the levels of P-P38, P-ERK, P-JNK, and cleaved caspase-3 decreased and the ratio of bcl-2/bax increased with ad-ALDH2 (10(6) pfu/ml) in combination with hypoxia for 8 h, which significantly alleviated in contrast to that in hypoxic HUVECs. We found low expression of ALDH2 and high rates of apoptosis in the livers of brain-dead donor rabbits. Furthermore, decreased ALDH2 led to apoptosis in HUVECs through MAPK pathway.
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Affiliation(s)
- Zibiao Zhong
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan Hubei, China
| | - Shaojun Ye
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan Hubei, China
| | - Yan Xiong
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan Hubei, China
| | - Lianxi Wu
- Jianghan District Center for Disease Control and Prevention, Wuhan Hubei, China
| | - Meng Zhang
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan Hubei, China
| | - Xiaoli Fan
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan Hubei, China
| | - Ling Li
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan Hubei, China
| | - Zhen Fu
- The 3rd Xiangya Hospital of Central South University, Research Center of National Health Ministry on Transplantation Medicine Engineering and Technology, Changsha, China
| | - Huanglei Wang
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan Hubei, China
| | - Mingyun Chen
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan Hubei, China
| | - Xiaomin Yan
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan Hubei, China
| | - Wei Huang
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan Hubei, China
| | - Dicken Shiu-Chung Ko
- Massachusetts General Hospital, Department of Urology, Harvard Medical School, Boston, MA, USA
| | - Yanfeng Wang
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan Hubei, China
| | - Qifa Ye
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan Hubei, China.,The 3rd Xiangya Hospital of Central South University, Research Center of National Health Ministry on Transplantation Medicine Engineering and Technology, Changsha, China
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Möbius MA, Thébaud B. Stem Cells and Their Mediators - Next Generation Therapy for Bronchopulmonary Dysplasia. Front Med (Lausanne) 2015; 2:50. [PMID: 26284246 PMCID: PMC4520239 DOI: 10.3389/fmed.2015.00050] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 07/15/2015] [Indexed: 01/13/2023] Open
Abstract
Bronchopulmonary dysplasia (BPD) remains a major complication of premature birth. Despite great achievements in perinatal medicine over the past decades, there is no treatment for BPD. Recent insights into the biology of stem/progenitor cells have ignited the hope of regenerating damaged organs. Animal experiments revealed promising lung protection/regeneration with stem/progenitor cells in experimental models of BPD and led to first clinical studies in infants. However, these therapies are still experimental and knowledge on the exact mechanisms of action of these cells is limited. Furthermore, heterogeneity of the therapeutic cell populations and missing potency assays currently limit our ability to predict a cell product’s efficacy. Here, we review the therapeutic potential of mesenchymal stromal, endothelial progenitor, and amniotic epithelial cells for BPD. Current knowledge on the mechanisms behind the beneficial effects of stem cells is briefly summarized. Finally, we discuss the obstacles constraining their transition from bench-to-bedside and present potential approaches to overcome them.
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Affiliation(s)
- Marius A Möbius
- Department of Neonatology and Pediatric Critical Care Medicine, Medical Faculty, University Hospital Carl Gustav Carus, Technische Universität Dresden , Dresden , Germany ; DFG Research Center and Cluster of Excellence for Regenerative Therapies (CRTD), Technische Universität Dresden , Dresden , Germany ; Regenerative Medicine Program, Sprott Centre for Stem Cell Research, Ottawa Hospital Research Institute, University of Ottawa , Ottawa, ON , Canada
| | - Bernard Thébaud
- Regenerative Medicine Program, Sprott Centre for Stem Cell Research, Ottawa Hospital Research Institute, University of Ottawa , Ottawa, ON , Canada ; Division of Neonatology, Department of Pediatrics, Children's Hospital of Eastern Ontario, University of Ottawa , Ottawa, ON , Canada
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29
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Porzionato A, Sfriso MM, Mazzatenta A, Macchi V, De Caro R, Di Giulio C. Effects of hyperoxic exposure on signal transduction pathways in the lung. Respir Physiol Neurobiol 2015; 209:106-14. [DOI: 10.1016/j.resp.2014.12.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 11/26/2014] [Accepted: 12/01/2014] [Indexed: 12/18/2022]
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30
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Prat D, Louis J. Quelles méthodes d’oxygénation aux urgences ? MEDECINE INTENSIVE REANIMATION 2014. [DOI: 10.1007/s13546-014-0910-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Niimori-Kita K, Ogino K, Mikami S, Kudoh S, Koizumi D, Kudoh N, Nakamura F, Misumi M, Shimomura T, Hasegawa K, Usui F, Nagahara N, Ito T. Identification of nuclear phosphoproteins as novel tobacco markers in mouse lung tissue following short-term exposure to tobacco smoke. FEBS Open Bio 2014; 4:746-54. [PMID: 25349779 PMCID: PMC4208089 DOI: 10.1016/j.fob.2014.08.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 08/19/2014] [Accepted: 08/19/2014] [Indexed: 01/07/2023] Open
Abstract
We analyzed nuclear phosphoprotein expression activated by tobacco smoke exposure. 253 phosphoproteins were identified in 1-day and 7-day exposure groups. Of these, 33 were significantly differentially expressed in control and exposed groups. Identified proteins were related to inflammation, response to stress and nicotine. OSF3 and spectrin β chain were identified as candidate tobacco smoke markers.
Smoking is a risk factor for lung diseases, including chronic obstructive pulmonary disease and lung cancer. However, the molecular mechanisms mediating the progression of these diseases remain unclear. Therefore, we sought to identify signaling pathways activated by tobacco-smoke exposure, by analyzing nuclear phosphoprotein expression using phosphoproteomic analysis of lung tissue from mice exposed to tobacco smoke. Sixteen mice were exposed to tobacco smoke for 1 or 7 days, and the expression of phosphorylated peptides was analyzed by mass spectrometry. A total of 253 phosphoproteins were identified, including FACT complex subunit SPT16 in the 1-day exposure group, keratin type 1 cytoskeletal 18 (K18), and adipocyte fatty acid-binding protein, in the 7-day exposure group, and peroxiredoxin-1 (OSF3) and spectrin β chain brain 1 (SPTBN1), in both groups. Semi-quantitative analysis of the identified phosphoproteins revealed that 33 proteins were significantly differentially expressed between the control and exposed groups. The identified phosphoproteins were classified according to their biological functions. We found that the identified proteins were related to inflammation, regeneration, repair, proliferation, differentiation, morphogenesis, and response to stress and nicotine. In conclusion, we identified proteins, including OSF3 and SPTBN1, as candidate tobacco smoke-exposure markers; our results provide insights into the mechanisms of tobacco smoke-induced diseases.
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Key Words
- 60s-RP, 60s ribosomal protein L10E
- AFABP, adipocyte fatty acid-binding protein
- ALDH2, aldehyde dehydrogenase, mitochondrial
- COPD, chronic obstructive pulmonary disorder
- CRP1, cysteine and glycine-rich protein 1
- ERK(1/2), extracellular signal regulated kinase 1/2
- FACTp140, FACT complex subunit SPT16
- HIP1, Huntingtin-interacting protein 1
- IL, interleukin
- JNK, c-Jun NH2-terminal kinase
- Jak2, tyrosine-protein kinase JAK2
- K18, keratin type 1 cytoskeletal 18
- K8, keratin type 2 cytoskeletal 8
- LIM, LIM/homeobox protein
- MAPK3, mitogen-activated protein kinase 3
- NF-κB, nuclear factor-kappa B
- Nuclear phosphoprotein
- OSF3, peroxiredoxin-1
- PKC-α, protein kinase C-α
- PRP19, pre-mRNA-processing factor 19
- Phosphoproteomic analysis
- ROS, reactive oxygen species
- SPTBN1, spectrin β chain brain 1
- STAT, signal transducer and activator of transcription
- Signaling pathways
- TGF-β, Transforming growth factor-β
- TIM, mitochondrial import inner membrane translocase subunit Tim9
- TNF, tumor necrosis factor
- TNFR2, tumor necrosis factor receptor 2
- TRAP1, heat shock protein 75 kDa
- Tobacco smoke exposure
- p100, serine protease P100
- pSTAT3-Tyr705, phosphorylated STAT3
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Affiliation(s)
- Kanako Niimori-Kita
- Department of Pathology and Experimental Medicine, Kumamoto University, 1-1-1, Honjo, Kumamoto 860-8556, Japan
| | - Kiyoshi Ogino
- Department of Pathology and Experimental Medicine, Kumamoto University, 1-1-1, Honjo, Kumamoto 860-8556, Japan
| | - Sayaka Mikami
- AMR Incorporated, 2-13-18, Nakane, Meguro-ku, Tokyo 152-0031, Japan
| | - Shinji Kudoh
- Department of Pathology and Experimental Medicine, Kumamoto University, 1-1-1, Honjo, Kumamoto 860-8556, Japan
| | - Daikai Koizumi
- Department of Pathology and Experimental Medicine, Kumamoto University, 1-1-1, Honjo, Kumamoto 860-8556, Japan
| | - Noritaka Kudoh
- Department of Pathology and Experimental Medicine, Kumamoto University, 1-1-1, Honjo, Kumamoto 860-8556, Japan
| | - Fumiko Nakamura
- Department of Pathology and Experimental Medicine, Kumamoto University, 1-1-1, Honjo, Kumamoto 860-8556, Japan
| | - Masahiro Misumi
- Department of Pathology and Experimental Medicine, Kumamoto University, 1-1-1, Honjo, Kumamoto 860-8556, Japan
| | - Tadasuke Shimomura
- Department of Pathology and Experimental Medicine, Kumamoto University, 1-1-1, Honjo, Kumamoto 860-8556, Japan
| | - Koki Hasegawa
- Department of Pathology and Experimental Medicine, Kumamoto University, 1-1-1, Honjo, Kumamoto 860-8556, Japan
| | - Fumihiko Usui
- AMR Incorporated, 2-13-18, Nakane, Meguro-ku, Tokyo 152-0031, Japan
| | - Noriyuki Nagahara
- Isotope Research Center, Nippon Medical School, 1-1-5, Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan
| | - Takaaki Ito
- Department of Pathology and Experimental Medicine, Kumamoto University, 1-1-1, Honjo, Kumamoto 860-8556, Japan
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YU YING, JIA XIANJIE, ZONG QIAOFENG, ZHANG GUANJUN, YE HONGWEI, HU JIE, GAO QIN, GUAN SUDONG. Remote ischemic postconditioning protects the heart by upregulating ALDH2 expression levels through the PI3K/Akt signaling pathway. Mol Med Rep 2014; 10:536-42. [DOI: 10.3892/mmr.2014.2156] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2013] [Accepted: 03/18/2014] [Indexed: 11/06/2022] Open
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Alli AA, Brewer EM, Montgomery DS, Ghant MS, Eaton DC, Brown LA, Helms MN. Chronic ethanol exposure alters the lung proteome and leads to mitochondrial dysfunction in alveolar type 2 cells. Am J Physiol Lung Cell Mol Physiol 2014; 306:L1026-35. [PMID: 24682449 DOI: 10.1152/ajplung.00287.2013] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The lungs can undergo irreversible damage from chronic alcohol consumption. Herein, we developed an animal model predisposed for edematous lung injury following chronic ingestion of alcohol to better understand the etiology of alcohol-related disorders. Using animal modeling, alongside high-throughput proteomic and microarray assays, we identified changes in lung protein and transcript in mice and rats, respectively, following chronic alcohol ingestion or a caloric control diet. Liquid chromatography-mass spectrometry identified several mitochondrial-related proteins in which the expression was upregulated following long-term alcohol ingestion in mice. Consistent with these observations, rat gene chip microarray analysis of alveolar cells obtained from animals maintained on a Lieber-DeCarli liquid alcohol diet confirmed significant changes in mitochondrial-related transcripts in the alcohol lung. Transmission electron microscopy revealed significant changes in the mitochondrial architecture in alcohol mice, particularly following lipopolysaccharide exposure. Chronic alcohol ingestion was also shown to worsen mitochondrial respiration, mitochondrial membrane polarization, and NAD(+)-to-NADH ratios in alveolar type 2 cells. In summary, our studies show causal connection between chronic alcohol ingestion and mitochondrial dysfunction, albeit the specific role of each of the mitochondrial-related proteins and transcripts identified in our study requires additional study.
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Affiliation(s)
- Abdel A Alli
- Department of Physiology, Emory University School of Medicine, Atlanta, Georgia
| | - Elizabeth M Brewer
- Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia; and
| | | | - Marcus S Ghant
- Department of Biological Sciences, Clark Atlanta University, Atlanta, Georgia
| | - Douglas C Eaton
- Department of Physiology, Emory University School of Medicine, Atlanta, Georgia; Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia; and
| | - Lou Ann Brown
- Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia; and
| | - My N Helms
- Department of Physiology, Emory University School of Medicine, Atlanta, Georgia; Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia; and
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Hu JF, Zhang GJ, Wang L, Kang PF, Li J, Wang HJ, Gao Q, Chen YQ. Ethanol at low concentration attenuates diabetes induced lung injury in rats model. J Diabetes Res 2014; 2014:107152. [PMID: 25019090 PMCID: PMC4082928 DOI: 10.1155/2014/107152] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 05/26/2014] [Indexed: 01/01/2023] Open
Abstract
To observe the changes of lung injury when diabetic rats were treated with low concentration of ethanol (EtOH) and analyze the related mechanisms, male Sprague-Dawley (SD) rats were divided into control, diabetic (DM), and EtOH+DM groups. Diabetic rat was mimicked by injection of streptozotocin intraperitoneally. Fasting blood glucose (FBG) level, lung weight (LW), body weight (BW), and LW/BW were measured. The changes of lung tissue and Type II alveolar cell were detected. Pulmonary malondialdehyde (MDA) content and superoxide dismutase (SOD) activity were measured; meanwhile, ALDH2 mRNA and protein expressions were detected by RT-PCR and western blotting, respectively. Compared with control group, in DM group, SOD activity was decreased; FBG level, LW/BW, MDA content, ALDH2 mRNA, and protein expressions were decreased. Compared with DM group, in EtOH+DM group, SOD activity, ALDH2 mRNA, and protein expressions were increased; LW/BW and MDA content were decreased. The structures of lung tissue and lamellar bodies were collapsed in DM group; the injury was attenuated in EtOH+DM group. Our findings suggested that, in diabetic rat, pulmonary ALDH2 expression was decreased accompanying lung injury. EtOH at low concentration decreased diabetes induced lung injury through activating ALDH2 expression.
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Affiliation(s)
- Jun-Feng Hu
- Department of Respiratory Disease, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233004, China
| | - Guan-Jun Zhang
- Department of Physiology, Bengbu Medical College, 2600 Dong Hai Avenue, Bengbu 233030, China
| | - Lei Wang
- Department of Physiology, Bengbu Medical College, 2600 Dong Hai Avenue, Bengbu 233030, China
| | - Pin-Fang Kang
- Department of Cardiovascular Disease, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233004, China
| | - Jun Li
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
| | - Hong-Ju Wang
- Department of Cardiovascular Disease, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233004, China
| | - Qin Gao
- Department of Physiology, Bengbu Medical College, 2600 Dong Hai Avenue, Bengbu 233030, China
- *Qin Gao:
| | - Yu-Qing Chen
- Department of Respiratory Disease, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233004, China
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Activation of ERK accelerates repair of renal tubular epithelial cells, whereas it inhibits progression of fibrosis following ischemia/reperfusion injury. Biochim Biophys Acta Mol Basis Dis 2013; 1832:1998-2008. [DOI: 10.1016/j.bbadis.2013.07.001] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 06/12/2013] [Accepted: 07/01/2013] [Indexed: 11/18/2022]
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ALDH2 protects against stroke by clearing 4-HNE. Cell Res 2013; 23:915-30. [PMID: 23689279 PMCID: PMC3698638 DOI: 10.1038/cr.2013.69] [Citation(s) in RCA: 140] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2012] [Revised: 02/05/2013] [Accepted: 03/20/2013] [Indexed: 12/16/2022] Open
Abstract
Aldehyde dehydrogenase 2 (ALDH2) is a mitochondrial enzyme that metabolizes ethanol and toxic aldehydes such as 4-hydroxy-2-nonenal (4-HNE). Using an unbiased proteomic search, we identified ALDH2 deficiency in stroke-prone spontaneously hypertensive rats (SHR-SP) as compared with spontaneously hypertensive rats (SHR). We concluded the causative role of ALDH2 deficiency in neuronal injury as overexpression or activation of ALDH2 conferred neuroprotection by clearing 4-HNE in in vitro studies. Further, ALDH2-knockdown rats revealed the absence of neuroprotective effects of PKCε. Moderate ethanol administration that is known to exert protection against stroke was shown to enhance the detoxification of 4-HNE, and to protect against ischemic cerebral injury through the PKCε-ALDH2 pathway. In SHR-SP, serum 4-HNE level was persistently elevated and correlated inversely with the lifespan. The role of 4-HNE in stroke in humans was also suggested by persistent elevation of its plasma levels for at least 6 months after stroke. Lastly, we observed that 21 of 1 242 subjects followed for 8 years who developed stroke had higher initial plasma 4-HNE levels than those who did not develop stroke. These findings suggest that activation of the ALDH2 pathway may serve as a useful index in the identification of stroke-prone subjects, and the ALDH2 pathway may be a potential target of therapeutic intervention in stroke.
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Kim HJ, Ji BR, Kim JS, Lee HN, Ha DH, Kim CW. Proteomic analysis of proteins associated with cellular senescence by calorie restriction in mesenchymal stem cells. In Vitro Cell Dev Biol Anim 2012; 48:186-95. [DOI: 10.1007/s11626-012-9485-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Accepted: 01/06/2012] [Indexed: 01/01/2023]
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Tian J, Zhao W, Tian S, Slater JM, Deng Z, Gridley DS. Expression of Genes Involved in Mouse Lung Cell Differentiation/Regulation after Acute Exposure to Photons and Protons with or without Low-Dose Preirradiation. Radiat Res 2011; 176:553-64. [DOI: 10.1667/rr2601.1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Jian Tian
- Department of Radiation Medicine, Radiation Research Laboratories, Loma Linda University, Loma Linda, California
| | - WeiLing Zhao
- Department of Radiation Oncology, Wake Forest University School of Medicine, Winston-Salem, North Carolina
| | - Sisi Tian
- School of Medicine, Loma Linda University, Loma Linda, California
| | - James M. Slater
- Department of Radiation Medicine, Radiation Research Laboratories, Loma Linda University, Loma Linda, California
| | - Zhiyong Deng
- Department of Radiation Oncology, Wake Forest University School of Medicine, Winston-Salem, North Carolina
| | - Daila S. Gridley
- Department of Radiation Medicine, Radiation Research Laboratories, Loma Linda University, Loma Linda, California
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Hu XY, Fang Q, Wang JS, Xie JQ, Chai BS, Li FQ, Cui X, Yang Y. Over-expression of aldehyde dehydrogenase-2 protects against H₂O₂-induced oxidative damage and apoptosis in peripheral blood mononuclear cells. Acta Pharmacol Sin 2011; 32:245-52. [PMID: 21293477 DOI: 10.1038/aps.2010.203] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
AIM To construct an eukaryotic expression vector containing the aldehyde dehydrogenase-2 (ALDH2) gene, and determine whether transfection with the ALDH2 gene can provide protection against hydrogen peroxide-induced oxidative damage, as well as attenuate apoptosis or cell death in human peripheral blood mononuclear cells (PBMCs). METHODS The ALDH2 gene was cloned from human hepatocytes by RT-PCR. The eukaryotic expression vector containing the gene was constructed and then transfected into PBMCs via liposomes. RT-PCR, indirect immunofluorescence assay, and Western blot were used to evaluate the expression of the transgene in target cells. MTT assay and flow cytometry were used to detect the effects of ALDH2 on PBMCs damaged by hydrogen peroxide (H₂O₂). The level of intracellular reactive oxygen species (ROS) was determined by fluorescence spectrophotometry. RESULTS The eukaryotic expression vector pcDNA3.1/myc-His-ALDH2 was successfully constructed and transfected into PBMCs. RT-PCR results showed higher mRNA expression of ALDH2 in the gene-transfected group than in the two control groups (empty vector-transfected group and negative control). Indirect immunofluorescence assay and Western blot indicated distinct higher protein expression of ALDH2 in the gene-transfected group. The cell survival rate against H₂O₂-induced oxidative damage was higher in the ALDH2 gene-transfected group. Moreover, apoptosis rates in gene-transfected PBMCs incubated with 50 and 75 μmol/L H₂O₂ decreased by 7% and 6%, respectively. The generation of intracellular ROS was also markedly downregulated. CONCLUSION ALDH2 gene transfection can protect PBMCs against H₂O₂-induced damage and attenuate apoptosis, accompanied with a downregulation of intracellular ROS. ALDH2 functions as a protector against oxidative stress.
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Chen Y, Chang L, Li W, Rong Z, Liu W, Shan R, Pan R. Thioredoxin protects fetal type II epithelial cells from hyperoxia-induced injury. Pediatr Pulmonol 2010; 45:1192-200. [PMID: 20812253 DOI: 10.1002/ppul.21307] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2009] [Revised: 04/04/2010] [Accepted: 04/05/2010] [Indexed: 11/06/2022]
Abstract
Oxygen toxicity is known to be one of the major contributors to bronchopulmonary dysplasia, a chronic lung disease in premature infants. Thioredoxin (Trx) is an antioxidant that prevents oxidative stress-induced cell death, suggesting a potential therapeutic role in bronchopulmonary dysplasia. The aim of this study was to determine the role of Trx in the pathogenesis of hyperoxia-induced alveolar epithelial cell injury. Alveolar type II epithelial cells from fetal rat lung were exposed to hyperoxia in vitro in the presence or absence of recombinant human Trx (rhTrx 2 µg/ml). Cell viability was assessed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide assay. Apoptosis and levels of reactive oxygen species (ROS) were measured by flow cytometry. Activation of mitogen-activated protein kinase (MAPK) and phosphatidylinositol 3-kinase-Akt (PI3K-Akt) pathways were detected by Western blotting. We also investigated the effects of rhTrx on the following antioxidants (superoxide dismutase, catalase, and glutathione peroxidase). Trx significantly reduced hyperoxia-induced cell death and increased cell viability. In addition, ROS generation in type II cells was inhibited by rhTrx under hyperoxic conditions. We demonstrated that rhTrx protected type II cells against hyperoxic injury via sustaining the extracellular signal regulated kinase and PI3K activation, and decreasing of c-Jun N-terminal protein kinase and p38 activation. The results also showed manganese superoxide dismutase and glutathione peroxidase activities were increased by rhTrx in type II cells exposed to hyperoxia.Taken together, these results demonstrate that rhTrx administration markedly attenuates hyperoxia-induced type II cell injury through reduction of ROS generation, elevation of antioxidant activities and regulation of both MAPK and PI3K-Akt signaling pathways.
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Affiliation(s)
- Yan Chen
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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Liu KX, Li C, Li YS, Yuan BL, Xu M, Xia Z, Huang WQ. Proteomic analysis of intestinal ischemia/reperfusion injury and ischemic preconditioning in rats reveals the protective role of aldose reductase. Proteomics 2010; 10:4463-75. [PMID: 21136599 DOI: 10.1002/pmic.201000078] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Intestinal ischemia/reperfusion (I/R) injury is a critical condition associated with high morbidity and mortality. Studies show that ischemic preconditioning (IPC) can protect the intestine from I/R injury. However, the underlying molecular mechanisms of this event have not been fully elucidated. In the present study, 2-DE combined with MALDI-MS was employed to analyze intestinal mucosa proteomes of rat subjected to I/R injury in the absence or presence of IPC pretreatment. The protein content of 16 proteins in the intestinal mucosa changed more than 1.5-fold following intestinal I/R. These proteins were, respectively, involved in the cellular processes of energy metabolism, anti-oxidation and anti-apoptosis. One of these proteins, aldose reductase (AR), removes reactive oxygen species. In support of the 2-DE results, the mRNA and protein expressions of AR were significantly downregulated upon I/R injury and enhanced by IPC as confirmed by RT-PCR and western blot analysis. Further study showed that AR-selective inhibitor epalrestat totally turned over the protective effect of IPC, indicating that IPC confers protection against intestinal I/R injury primarily by increasing intestinal AR expression. The finding that AR may play a key in intestinal ischemic protection might offer evidences to foster the development of new therapies against intestinal I/R injury.
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Affiliation(s)
- Ke-Xuan Liu
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, PR China.
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Feng X, Feistel T, Buffalo C, McCormack A, Kruvand E, Rodriguez-Contreras D, Akopyants NS, Umasankar PK, David L, Jardim A, Beverley SM, Landfear SM. Remodeling of protein and mRNA expression in Leishmania mexicana induced by deletion of glucose transporter genes. Mol Biochem Parasitol 2010; 175:39-48. [PMID: 20869991 DOI: 10.1016/j.molbiopara.2010.08.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2010] [Revised: 08/26/2010] [Accepted: 08/27/2010] [Indexed: 11/19/2022]
Abstract
Glucose is a major nutrient in the insect vector stage of Leishmania parasites. Glucose transporter null mutants of Leishmania mexicana exhibit profound phenotypic changes in both insect stage promastigotes and mammalian host stage amastigotes that reside within phagolysosomes of host macrophages. Some of these phenotypic changes could be either mediated or attenuated by changes in gene expression that accompany deletion of the glucose transporter genes. To search for changes in protein expression, the profile of proteins detected on two-dimensional gels was compared for wild type and glucose transporter null mutant promastigotes. A total of 50 spots whose intensities changed significantly and consistently in multiple experiments were detected, suggesting that a cohort of proteins is altered in expression levels in the null mutant parasites. Following identification of proteins by mass spectrometry, 3 such regulated proteins were chosen for more detailed analysis: mitochondrial aldehyde dehydrogenase, ribokinase, and hexokinase. Immunoblots employing antisera against these enzymes confirmed that their levels were upregulated, both in glucose transporter null mutants and in wild type parasites starved for glucose. Quantitative reverse transcriptase PCR (qRT-PCR) revealed that the levels of mRNAs encoding these enzymes were also enhanced. Global expression profiling using microarrays revealed a limited number of additional changes, although the sensitivity of the microarrays to detect modest changes in amplitude was less than that of two-dimensional gels. Hence, there is likely to be a network of proteins whose expression levels are altered by genetic ablation of glucose transporters, and much of this regulation may be reflected by changes in the levels of the cognate mRNAs. Some of these changes in protein expression may reflect an adaptive response of the parasites to limitation of glucose.
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Affiliation(s)
- Xiuhong Feng
- Department of Molecular Microbiology and Immunology, Oregon Health & Science University, 3181 S.W. Sam Jackson Park Road, Portland, OR 97239, USA
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Hepatocyte growth factor protects human embryonic stem cell derived-neural progenitors from hydrogen peroxide-induced apoptosis. Eur J Pharmacol 2010; 645:23-31. [PMID: 20655899 DOI: 10.1016/j.ejphar.2010.07.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2009] [Revised: 07/01/2010] [Accepted: 07/11/2010] [Indexed: 11/21/2022]
Abstract
Promoting human embryonic stem cell (hESC)-derived-neural progenitor survival in the pro-apoptotic niche is pivotal for stem cell replacement therapy. The present study was designed to investigate the protective effect of hepatocyte growth factor (HGF) on hESC-derived neural progenitor injured by hydrogen peroxide (H(2)O(2)) exposure. Treatment of hESC-derived neural progenitor cells with HGF prior to H(2)O(2) exposure conferred protective effect against oxidative stress-induced apoptosis. HGF treatment increased both phosphoinositide 3-kinase (PI3K)/Akt and extracellular signal-regulated kinase1/2 (ERK1/2) phosphorylation. However, selective inhibition of each pathway supported that the activation of PI3K/AKT, but not ERK1/2, provides survival advantage to the neural progenitor cells. Further investigation indicated that HGF pretreatment could attenuate the decrease of the expression of Bcl-2 protein induced by H(2)O(2), whereas the level of Bax was not affected. Additionally, we observed that H(2)O(2)-induced decrease of mitochondrial transmembrane potential, release of cytochrome c and increase of caspase-3 activation were alleviated by HGF pretreatment. These effects of HGF could be reversed by inhibition of the PI3K/Akt and ERKs pathways, indicating PI3K/Akt and ERKs signaling might be involved in HGF-mediated regulation of mitochondrial apoptotic pathway mediated by H(2)O(2). The neuroprotective effect of HGF might potentially be useful in stem cell-based therapies for neurodegenerative disorders.
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Sohn MH, Kang MJ, Matsuura H, Bhandari V, Chen NY, Lee CG, Elias JA. The chitinase-like proteins breast regression protein-39 and YKL-40 regulate hyperoxia-induced acute lung injury. Am J Respir Crit Care Med 2010; 182:918-28. [PMID: 20558631 DOI: 10.1164/rccm.200912-1793oc] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
RATIONALE Prolonged exposure to 100% O(2) causes hyperoxic acute lung injury (HALI), characterized by alveolar epithelial cell injury and death. We previously demonstrated that the murine chitinase-like protein, breast regression protein (BRP)-39 and its human homolog, YKL-40, inhibit cellular apoptosis. However, the regulation and roles of these molecules in hyperoxia have not been addressed. OBJECTIVES We hypothesized that BRP-39 and YKL-40 (also called chitinase-3-like 1) play important roles in the pathogenesis of HALI. METHODS We characterized the regulation of BRP-39 during HALI and the responses induced by hyperoxia in wild-type mice, BRP-39-null (-/-) mice, and BRP-39(-/-) mice in which YKL-40 was overexpressed in respiratory epithelium. We also compared the levels of tracheal aspirate YKL-40 in premature newborns with respiratory failure. MEASUREMENTS AND MAIN RESULTS These studies demonstrate that hyperoxia inhibits BRP-39 in vivo in the murine lung and in vitro in epithelial cells. They also demonstrate that BRP-39(-/-) mice have exaggerated permeability, protein leak, oxidation, inflammatory, chemokine, and epithelial apoptosis responses, and experience premature death in 100% O(2). Lastly, they demonstrate that YKL-40 ameliorates HALI, prolongs survival in 100% O(2), and rescues the exaggerated injury response in BRP-39(-/-) animals. In accord with these findings, the levels of tracheal aspirate YKL-40 were lower in premature infants treated with hyperoxia for respiratory failure who subsequently experienced bronchopulmonary dysplasia or death compared with those that did not experience these complications. CONCLUSIONS These studies demonstrate that hyperoxia inhibits BRP-39/YKL-40, and that BRP-39 and YKL-40 are critical regulators of oxidant injury, inflammation, and epithelial apoptosis in the murine and human lung.
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Affiliation(s)
- Myung Hyun Sohn
- Department of Pediatrics, and Institute of Allergy, Severance Biomedical Science Institute, BK21 Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea
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Overexpression of Aldehyde Dehydrogenase-2 Attenuates Neurotoxicity Induced by 4-Hydroxynonenal in Cultured Primary Hippocampal Neurons. Neurotox Res 2010; 19:412-22. [DOI: 10.1007/s12640-010-9183-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2009] [Revised: 01/24/2010] [Accepted: 03/24/2010] [Indexed: 12/30/2022]
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Chokas AL, Trivedi CM, Lu MM, Tucker PW, Li S, Epstein JA, Morrisey EE. Foxp1/2/4-NuRD interactions regulate gene expression and epithelial injury response in the lung via regulation of interleukin-6. J Biol Chem 2010; 285:13304-13. [PMID: 20185820 DOI: 10.1074/jbc.m109.088468] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
To determine the underlying mechanism of Foxp1/2/4-mediated transcriptional repression, a yeast two-hybrid screen was performed that identified p66beta, a transcriptional repressor and component of the NuRD chromatin-remodeling complex. We show that direct interactions between Foxp1/4 and p66beta are mediated by the CR2 domain within p66beta and the zinc finger/leucine zipper repression domain found in Foxp1/2/4. These direct interactions are functionally relevant as overexpression of p66beta in combination with Foxp factors cooperatively represses Foxp target gene expression, whereas loss of p66 and Foxp factors results in de-repression of endogenous Foxp target genes in lung epithelial cells. Moreover, the NuRD components HDAC1/2 associate in a macromolecular complex with Foxp proteins, and loss of expression or inhibition of HDAC1/2 activity leads to de-repression of Foxp target gene expression. Importantly, we show in vivo that Foxp1 and HDAC2 act cooperatively to regulate expression of the cytoprotective cytokine interleukin-6, which results in increased resistance to hyperoxic lung injury in Foxp1/HDAC2 compound mutant animals. These data reveal an important interaction between the Foxp transcription factors and the NuRD chromatin-remodeling complex that modulates transcriptional repression critical for the lung epithelial injury response.
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Affiliation(s)
- Ann L Chokas
- Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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47
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Li YS, Wang ZX, Li C, Xu M, Li Y, Huang WQ, Xia Z, Liu KX. Proteomics of ischemia/reperfusion injury in rat intestine with and without ischemic postconditioning. J Surg Res 2009; 164:e173-80. [PMID: 20189595 DOI: 10.1016/j.jss.2009.10.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2009] [Revised: 09/11/2009] [Accepted: 10/01/2009] [Indexed: 12/11/2022]
Abstract
BACKGROUND Intestinal ischemia/reperfusion (I/R) injury is a critical condition associated with high morbidity and mortality. Our previous study showed that ischemic postconditioning (IPo) protects the intestinal mucosa from I/R injury. However, the precise molecular mechanisms of this event remain poorly elucidated. The aim of this study was to investigate the differentially expressed proteins of intestinal mucosa after intestinal I/R with or without IPo, and to explore the potential mechanisms of intestinal I/R injury and the protective effect of IPo in relation to the differential proteins. MATERIALS AND METHODS Intestinal I/R injury was established by occluding the superior mesenteric artery (SMA) for 60 min followed by 60 min reperfusion. The rats were randomly allocated into one of three groups based upon the intervention (n = 8); sham : sham surgical preparation including isolation of the SMA without occlusion was performed; injury: there was no intervention either before or after SMA occlusion; IPo: three cycles of 30 s reperfusion-30 s reocclusion were imposed immediately upon reperfusion. A comparative proteomics approach with two-dimensional gel electrophoresis was used to isolate proteins in intestinal mucosa, the expression of which were regulated by I/R injury post-treated with or without IPo. The differentially displayed proteins were identified through matrix-assisted laser desorption/ionization-time of flight-mass spectrometry (MALDI-TOF-MS). RESULTS Image analysis revealed that an average of 1300 protein spots were detected on each gel; 16 and 9 proteins showing more than 1.5-fold difference were identified between the Sham versus Injury group and injury group versus IPo group, respectively. The identified proteins were functionally involved in the cellular processes of energy metabolism, anti-oxidation, and anti-apoptosis. CONCLUSIONS This study provided new clues for understanding the mechanisms of IPo against intestinal I/R injury.
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Affiliation(s)
- Yun-Sheng Li
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Neuropeptide substance P attenuates hyperoxia-induced oxidative stress injury in type II alveolar epithelial cells via suppressing the activation of JNK pathway. Lung 2009; 187:421-6. [PMID: 19789913 DOI: 10.1007/s00408-009-9177-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2009] [Accepted: 09/08/2009] [Indexed: 02/05/2023]
Abstract
Hyperoxia-induced oxidative stress plays a key role in many pulmonary diseases. In an earlier study we found the protective effect of the neuropeptide substance P (SP) on type II alveolar epithelial cells (AECIIs) after hyperoxia exposure. Then, we investigated c-Jun N-terminal kinase (C-JNK) signal transduction pathways in AECIIs before and after hyperoxia exposure. Primary AECIIs were isolated and purified from premature rats. Subsequently, the cells were treated with air (21% oxygen), hyperoxia (95% oxygen), SP+ air, and SP+ hyperoxia. SP was added in advance to reach a final concentration 1 x 10(-6) mol/l. The cells were then exposed to air and hyperoxia for 12, 24, and 48 h. XTT cell proliferation assay and fluorescence-activated cell sorting (FACS) were employed to detect cell growth and apoptosis. Phosphorylated JNK (p-JNK) levels were measured using Western blot assay. The morphological alteration of AECIIs was observed using a transmission electron microscope (TEM). Compared with the simple hyperoxia treatment, the cell growth and apoptosis percentage was significantly increased and decreased after adding additional SP. Meanwhile, the reduced levels of p-JNKs could be found after adding SP. Furthermore, the morphological damage of AECIIs was greatly improved. These data suggest that SP can promote AECII proliferation and inhibit apoptosis by suppressing JNK signal pathways after hyperoxia exposure, which attenuates hyperoxia-induced oxidative stress damage in AECIIs. It might be a potential therapy for acute pulmonary injury under hyperoxia-induced oxidative stress.
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Reutershan J, Saprito MS, Wu D, Rückle T, Ley K. Phosphoinositide 3-kinase gamma required for lipopolysaccharide-induced transepithelial neutrophil trafficking in the lung. Eur Respir J 2009; 35:1137-47. [PMID: 19797129 DOI: 10.1183/09031936.00085509] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Phosphoinositide 3-kinase gamma(PI3Kgamma) is a critical mediator of directional cell movement. Here, we sought to characterise the role of PI3Kgamma in mediating the different steps of polymorphonuclear leukocyte (PMN) trafficking in the lung. In a murine model of lipopolysaccharide (LPS)-induced lung injury, PMN migration into the different lung compartments was determined in PI3Kgamma gene-deficient (PI3Kgamma(-/-)) and wild-type mice. Bone marrow chimeras were created to characterise the role of PI3Kgamma on haematopoietic versus nonhaematopoietic cells. A small-molecule PI3Kgamma inhibitor was tested in vitro and in vivo. PMN adhesion to the pulmonary endothelium and transendothelial migration into the lung interstitium was enhanced in PI3Kgamma(-/-) mice. However, transepithelial migration into the alveolar space was reduced in these mice. When irradiated PI3Kgamma(-/-) mice were reconstituted with bone marrow from wild-type mice, migratory activity into the alveolar space was restored partially. A small-molecule PI3Kgamma inhibitor reduced chemokine-induced PMN migration in vitro when PMNs or epithelial cells, but not when endothelial cells, were treated. The inhibitor also reduced LPS-induced PMN migration in vivo. We conclude that PI3Kgamma is required for transepithelial but not for transendothelial migration in LPS-induced lung injury. Inhibition of PI3Kgamma activity may be effective at curbing excessive PMN infiltration in lung injury.
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Affiliation(s)
- J Reutershan
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA, USA.
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Xu D, Perez RE, Rezaiekhaligh MH, Bourdi M, Truog WE. Knockdown of ERp57 increases BiP/GRP78 induction and protects against hyperoxia and tunicamycin-induced apoptosis. Am J Physiol Lung Cell Mol Physiol 2009; 297:L44-51. [DOI: 10.1152/ajplung.90626.2008] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Supplemental oxygen therapy (hyperoxia) in preterm babies with respiratory stress is associated with lung injury and the development of bronchopulmonary dysplasia. Endoplasmic reticulum (ER) homeostasis plays critical roles in maintaining cellular functions such as protein synthesis, folding, and secretion. Interruption of ER homeostasis causes ER stress and triggers the unfolded protein response, which can lead to apoptosis in persistently stressed cells. ERp57 is an ER protein and is associated with calreticulin and calnexin in protein glycosylation. In this study, we found hyperoxia downregulated ERp57 in neonatal rat lungs and cultured human endothelial cells. Transient transfection of ERp57 small interfering RNA significantly knocked down ERp57 expression and reduced hyperoxia- or tunicamycin-induced apoptosis in human endothelial cells. Apoptosis was decreased from 26.8 to 9.9% in hyperoxia-exposed cells and from 37.8 to 5.0% in tunicamycin-treated cells. The activation of caspase-3 induced by hyperoxia or tunicamycin was diminished and immunoglobulin heavy chain-binding protein/glucose-regulated protein 78-kDa (BiP/GRP78) induction was increased in ERp57 knockdown cells. Overexpression of ERp57 exacerbated hyperoxia- or tunicamycin-induced apoptosis in human endothelial cells. Apoptosis was increased from 10.1 to 14.3% in hyperoxia-exposed cells and from 14.0 to 21.2% in tunicamycin-treated cells. Overexpression of ERp57 also augmented tunicamycin-induced caspase-3 activation and reduced BiP/GRP78 induction. Our results demonstrate that ERp57 can regulate apoptosis in human endothelial cells. It appears that knockdown of ERp57 confers cellular protection against hyperoxia- or tunicamycin-induced apoptosis by inhibition of caspase-3 activation and stimulation of BiP/GRP78 induction.
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