1
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Lin J, Wang L, Wu Y, Xiang Q, Zhao Y, Zheng X, Jiang S, Sun Z, Fan D, Li W. Involvement of DJ-1 in the pathogenesis of intervertebral disc degeneration via hexokinase 2-mediated mitophagy. Exp Mol Med 2024; 56:747-759. [PMID: 38531963 PMCID: PMC10984922 DOI: 10.1038/s12276-024-01196-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 12/29/2023] [Accepted: 01/04/2024] [Indexed: 03/28/2024] Open
Abstract
Intervertebral disc degeneration (IDD) is an important pathological basis for degenerative spinal diseases and is involved in mitophagy dysfunction. However, the molecular mechanisms underlying mitophagy regulation in IDD remain unclear. This study aimed to clarify the role of DJ-1 in regulating mitophagy during IDD pathogenesis. Here, we showed that the mitochondrial localization of DJ-1 in nucleus pulposus cells (NPCs) first increased and then decreased in response to oxidative stress. Subsequently, loss- and gain-of-function experiments revealed that overexpression of DJ-1 in NPCs inhibited oxidative stress-induced mitochondrial dysfunction and mitochondria-dependent apoptosis, whereas knockdown of DJ-1 had the opposite effect. Mechanistically, mitochondrial translocation of DJ-1 promoted the recruitment of hexokinase 2 (HK2) to damaged mitochondria by activating Akt and subsequently Parkin-dependent mitophagy to inhibit oxidative stress-induced apoptosis in NPCs. However, silencing Parkin, reducing mitochondrial recruitment of HK2, or inhibiting Akt activation suppressed DJ-1-mediated mitophagy. Furthermore, overexpression of DJ-1 ameliorated IDD in rats through HK2-mediated mitophagy. Taken together, these findings indicate that DJ-1 promotes HK2-mediated mitophagy under oxidative stress conditions to inhibit mitochondria-dependent apoptosis in NPCs and could be a therapeutic target for IDD.
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Affiliation(s)
- Jialiang Lin
- Department of Orthopedics, Peking University Third Hospital, Beijing, China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing, China
- Peking University Health Science Center, Beijing, China
| | - Longjie Wang
- Department of Orthopedics, Peking University Third Hospital, Beijing, China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing, China
| | - Yuhao Wu
- The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Qian Xiang
- Department of Orthopedics, Peking University Third Hospital, Beijing, China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing, China
- Peking University Health Science Center, Beijing, China
| | - Yongzhao Zhao
- Department of Orthopedics, Peking University Third Hospital, Beijing, China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing, China
- Peking University Health Science Center, Beijing, China
| | - Xuanqi Zheng
- Department of Orthopedics, Peking University Third Hospital, Beijing, China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing, China
- Peking University Health Science Center, Beijing, China
| | - Shuai Jiang
- Department of Orthopedics, Peking University Third Hospital, Beijing, China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing, China
| | - Zhuoran Sun
- Department of Orthopedics, Peking University Third Hospital, Beijing, China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing, China
| | - Dongwei Fan
- Department of Orthopedics, Peking University Third Hospital, Beijing, China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing, China
| | - Weishi Li
- Department of Orthopedics, Peking University Third Hospital, Beijing, China.
- Beijing Key Laboratory of Spinal Disease Research, Beijing, China.
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing, China.
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2
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Henrich MT, Oertel WH, Surmeier DJ, Geibl FF. Mitochondrial dysfunction in Parkinson's disease - a key disease hallmark with therapeutic potential. Mol Neurodegener 2023; 18:83. [PMID: 37951933 PMCID: PMC10640762 DOI: 10.1186/s13024-023-00676-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 10/30/2023] [Indexed: 11/14/2023] Open
Abstract
Mitochondrial dysfunction is strongly implicated in the etiology of idiopathic and genetic Parkinson's disease (PD). However, strategies aimed at ameliorating mitochondrial dysfunction, including antioxidants, antidiabetic drugs, and iron chelators, have failed in disease-modification clinical trials. In this review, we summarize the cellular determinants of mitochondrial dysfunction, including impairment of electron transport chain complex 1, increased oxidative stress, disturbed mitochondrial quality control mechanisms, and cellular bioenergetic deficiency. In addition, we outline mitochondrial pathways to neurodegeneration in the current context of PD pathogenesis, and review past and current treatment strategies in an attempt to better understand why translational efforts thus far have been unsuccessful.
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Affiliation(s)
- Martin T Henrich
- Department of Psychiatry and Psychotherapy, Philipps University Marburg, 35039, Marburg, Germany
- Department of Neurology, Philipps University Marburg, 35043, Marburg, Germany
- Department of Neuroscience, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA
| | - Wolfgang H Oertel
- Department of Neurology, Philipps University Marburg, 35043, Marburg, Germany
| | - D James Surmeier
- Department of Neuroscience, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA
| | - Fanni F Geibl
- Department of Psychiatry and Psychotherapy, Philipps University Marburg, 35039, Marburg, Germany.
- Department of Neurology, Philipps University Marburg, 35043, Marburg, Germany.
- Department of Neuroscience, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA.
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3
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Mathas N, Poncet G, Laurent C, Larigot L, Le-Grand B, Gonis E, Birman S, Galardon E, Sari MA, Tiouaini M, Nioche P, Barouki R, Coumoul X, Mansuy D, Dairou J. Inhibition by pesticides of the DJ-1/Park7 protein related to Parkinson disease. Toxicology 2023; 487:153467. [PMID: 36842454 DOI: 10.1016/j.tox.2023.153467] [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: 01/19/2023] [Revised: 02/16/2023] [Accepted: 02/23/2023] [Indexed: 02/26/2023]
Abstract
Parkinson's disease is a severe neurodegenerative disease. Several environmental contaminants such as pesticides have been suspected to favor the appearance of this pathology. The protein DJ-1 (or Park7) protects against the development of Parkinson's disease. Thus, the possible inhibitory effects of about a hundred pesticides on human DJ-1 have been studied. We identified fifteen of them as strong inhibitors of DJ-1 with IC50 values between 0.02 and 30 µM. Thiocarbamates are particularly good inhibitors, as shown by thiram that acts as an irreversible inhibitor of an esterase activity of DJ-1 with an IC50 value of 0.02 µM. Thiram was also found as a good inhibitor of the protective activity of DJ-1 against glycation. Such inhibitory effects could be one of the various biological effects of these pesticides that may explain their involvement in the development of Parkinson's disease.
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Affiliation(s)
- Nicolas Mathas
- Université Paris cité, CNRS, Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, 45 rue des Saints Pères, F-75006 Paris, France
| | - Gabrielle Poncet
- Université Paris cité, CNRS, Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, 45 rue des Saints Pères, F-75006 Paris, France
| | - Catherine Laurent
- Université Paris cité, CNRS, Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, 45 rue des Saints Pères, F-75006 Paris, France
| | - Lucie Larigot
- Université Paris Cité, 45 rue des Saints Pères, F-75006 Paris, France; INSERM, UMR-S1124, T3S, 45 rue des Saints Pères, F-75006 Paris, France
| | - Béatrice Le-Grand
- Université Paris Cité, 45 rue des Saints Pères, F-75006 Paris, France; INSERM, UMR-S1124, T3S, 45 rue des Saints Pères, F-75006 Paris, France
| | - Elodie Gonis
- Université Paris cité, CNRS, Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, 45 rue des Saints Pères, F-75006 Paris, France; Genes Circuits Rhythms and Neuropathology, Brain Plasticity Unit, CNRS, ESPCI Paris, PSL Research University, Paris, France
| | - Serge Birman
- Genes Circuits Rhythms and Neuropathology, Brain Plasticity Unit, CNRS, ESPCI Paris, PSL Research University, Paris, France
| | - Erwan Galardon
- Université Paris cité, CNRS, Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, 45 rue des Saints Pères, F-75006 Paris, France
| | - Marie-Agnès Sari
- Université Paris cité, CNRS, Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, 45 rue des Saints Pères, F-75006 Paris, France
| | - Mounira Tiouaini
- Université Paris Cité, 45 rue des Saints Pères, F-75006 Paris, France; INSERM, UMR-S1124, T3S, 45 rue des Saints Pères, F-75006 Paris, France; Structural and Molecular Analysis Platform, BioMedTech Facilities INSERM US36-CNRS UMS2009, Université Paris Cité, Paris, France
| | - Pierre Nioche
- Université Paris Cité, 45 rue des Saints Pères, F-75006 Paris, France; INSERM, UMR-S1124, T3S, 45 rue des Saints Pères, F-75006 Paris, France; Structural and Molecular Analysis Platform, BioMedTech Facilities INSERM US36-CNRS UMS2009, Université Paris Cité, Paris, France
| | - Robert Barouki
- Université Paris Cité, 45 rue des Saints Pères, F-75006 Paris, France; INSERM, UMR-S1124, T3S, 45 rue des Saints Pères, F-75006 Paris, France
| | - Xavier Coumoul
- Université Paris Cité, 45 rue des Saints Pères, F-75006 Paris, France; INSERM, UMR-S1124, T3S, 45 rue des Saints Pères, F-75006 Paris, France
| | - Daniel Mansuy
- Université Paris cité, CNRS, Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, 45 rue des Saints Pères, F-75006 Paris, France
| | - Julien Dairou
- Université Paris cité, CNRS, Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, 45 rue des Saints Pères, F-75006 Paris, France.
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Loss of Pleckstrin homology like domain, family A, member 1 promotes type Ⅱ alveolar epithelial cell apoptosis in chronic obstructive pulmonary disease emphysematous phenotype via interaction with tyrosine 3-monooxygenase/tryptophan 5-monooxygenase activation protein epsilon. Int J Biochem Cell Biol 2022; 151:106297. [PMID: 36108948 DOI: 10.1016/j.biocel.2022.106297] [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: 05/10/2022] [Revised: 08/09/2022] [Accepted: 09/11/2022] [Indexed: 11/21/2022]
Abstract
Emphysematous phenotype is the most important phenotypic component of chronic obstructive pulmonary disease and is associated with substantial morbidity and mortality. The current pharmaceutical treatments and therapeutic procedures do not reduce pulmonary damage in patients with emphysematous phenotype. Therefore, it is important to identify effector molecules that can be used as interfering targets in such patients. Apoptosis of type II alveolar epithelial cells plays a key role in the phenotypic formation. This study aimed to further explore the molecular mechanisms involved in this process. The number of type II alveolar epithelial cells was significantly reduced due to increased apoptosis in patients with emphysematous phenotype compared to those with non-emphysematous phenotype. Pleckstrin homology like domain, family A, member 1 (PHLDA1) was mainly distributed in type II alveolar epithelial cells in both groups but was markedly reduced in patients with emphysematous phenotype. Overexpression of PHLDA1 prevented cigarette smoke extract-stimulated apoptosis of type II alveolar epithelial cells, whereas its knockdown worsened the apoptosis. PHLDA1 binding ability to tyrosine 3-monooxygenase/tryptophan 5-monooxygenase activation protein epsilon (YWHAE) was weakened after exposure to cigarette smoke extract, with decreased PHLDA1 level lowering the abundance of YWHAE and attenuating the binding ability of YWHAE to p-Bad. These results demonstrate that considerable apoptosis of type II alveolar epithelial cells occurs in patients with emphysematous phenotype, and PHLDA1 may act as an effective antiapoptotic factor via YWHAE. Moreover, PHLDA1 may serve as a potential interfering target, providing insights into therapeutic strategies for emphysematous phenotype.
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5
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Mazza MC, Shuck SC, Lin J, Moxley MA, Termini J, Cookson MR, Wilson MA. DJ-1 is not a deglycase and makes a modest contribution to cellular defense against methylglyoxal damage in neurons. J Neurochem 2022; 162:245-261. [PMID: 35713360 PMCID: PMC9539984 DOI: 10.1111/jnc.15656] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 06/08/2022] [Accepted: 06/11/2022] [Indexed: 11/27/2022]
Abstract
Human DJ‐1 is a cytoprotective protein whose absence causes Parkinson's disease and is also associated with other diseases. DJ‐1 has an established role as a redox‐regulated protein that defends against oxidative stress and mitochondrial dysfunction. Multiple studies have suggested that DJ‐1 is also a protein/nucleic acid deglycase that plays a key role in the repair of glycation damage caused by methylglyoxal (MG), a reactive α‐keto aldehyde formed by central metabolism. Contradictory reports suggest that DJ‐1 is a glyoxalase but not a deglycase and does not play a major role in glycation defense. Resolving this issue is important for understanding how DJ‐1 protects cells against insults that can cause disease. We find that DJ‐1 reduces levels of reversible adducts of MG with guanine and cysteine in vitro. The steady‐state kinetics of DJ‐1 acting on reversible hemithioacetal substrates are fitted adequately with a computational kinetic model that requires only a DJ‐1 glyoxalase activity, supporting the conclusion that deglycation is an apparent rather than a true activity of DJ‐1. Sensitive and quantitative isotope‐dilution mass spectrometry shows that DJ‐1 modestly reduces the levels of some irreversible guanine and lysine glycation products in primary and cultured neuronal cell lines and whole mouse brain, consistent with a small but measurable effect on total neuronal glycation burden. However, DJ‐1 does not improve cultured cell viability in exogenous MG. In total, our results suggest that DJ‐1 is not a deglycase and has only a minor role in protecting neurons against methylglyoxal toxicity.![]()
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Affiliation(s)
- Melissa Conti Mazza
- Cell Biology and Gene Expression Section, National Institute on Aging, National Institutes of Health, Bethesda, Maryland, USA
| | - Sarah C Shuck
- Department of Molecular Medicine, Beckman Research Institute at City of Hope, Duarte, California, USA
| | - Jiusheng Lin
- Department of Biochemistry and Redox Biology Center, University of Nebraska, Lincoln, Nebraska, USA
| | - Michael A Moxley
- Department of Chemistry, University of Nebraska at Kearney, Kearney, Nebraska, USA
| | - John Termini
- Department of Molecular Medicine, Beckman Research Institute at City of Hope, Duarte, California, USA
| | - Mark R Cookson
- Cell Biology and Gene Expression Section, National Institute on Aging, National Institutes of Health, Bethesda, Maryland, USA
| | - Mark A Wilson
- Department of Biochemistry and Redox Biology Center, University of Nebraska, Lincoln, Nebraska, USA
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6
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Abstract
The use of electronic (e)-cigarettes was initially considered a beneficial solution to conventional cigarette smoking cessation. However, paradoxically, e-cigarette use is rapidly growing among nonsmokers, including youth and young adults. In 2019, this rapid growth resulted in an epidemic of hospitalizations and deaths of e-cigarette users (vapers) due to acute lung injury; this novel disease was termed e-cigarette or vaping use-associated lung injury (EVALI). Pathophysiologic mechanisms of EVALI likely involve cytotoxicity and neutrophilic inflammation caused by inhaled chemicals, but further details remain unknown. The undiscovered mechanisms of EVALI are a barrier to identifying biomarkers and developing therapeutics. Furthermore, adverse effects of e-cigarette use have been linked to chronic lung diseases and systemic effects on multiple organs. In this comprehensive review, we discuss the diverse spectrum of vaping exposures, epidemiological and clinical reports, and experimental findings to provide a better understanding of EVALI and the adverse health effects of chronic e-cigarette exposure.
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Affiliation(s)
- Jin-Ah Park
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA;
| | - Laura E Crotty Alexander
- University of California at San Diego, La Jolla, California, USA.,Veterans Affairs (VA) San Diego Healthcare System, San Diego, California, USA
| | - David C Christiani
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA; .,Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
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7
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Lin CR, Bahmed K, Kosmider B. Dysregulated Cell Signaling in Pulmonary Emphysema. Front Med (Lausanne) 2022; 8:762878. [PMID: 35047522 PMCID: PMC8762198 DOI: 10.3389/fmed.2021.762878] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 12/06/2021] [Indexed: 01/19/2023] Open
Abstract
Pulmonary emphysema is characterized by the destruction of alveolar septa and irreversible airflow limitation. Cigarette smoking is the primary cause of this disease development. It induces oxidative stress and disturbs lung physiology and tissue homeostasis. Alveolar type II (ATII) cells have stem cell potential and can repair the denuded epithelium after injury; however, their dysfunction is evident in emphysema. There is no effective treatment available for this disease. Challenges in this field involve the large complexity of lung pathophysiological processes and gaps in our knowledge on the mechanisms of emphysema progression. It implicates dysregulation of various signaling pathways, including aberrant inflammatory and oxidative responses, defective antioxidant defense system, surfactant dysfunction, altered proteostasis, disrupted circadian rhythms, mitochondrial damage, increased cell senescence, apoptosis, and abnormal proliferation and differentiation. Also, genetic predispositions are involved in this disease development. Here, we comprehensively review studies regarding dysregulated cell signaling, especially in ATII cells, and their contribution to alveolar wall destruction in emphysema. Relevant preclinical and clinical interventions are also described.
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Affiliation(s)
- Chih-Ru Lin
- Department of Microbiology, Immunology, and Inflammation, Temple University, Philadelphia, PA, United States.,Center for Inflammation and Lung Research, Temple University, Philadelphia, PA, United States
| | - Karim Bahmed
- Center for Inflammation and Lung Research, Temple University, Philadelphia, PA, United States.,Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, PA, United States
| | - Beata Kosmider
- Department of Microbiology, Immunology, and Inflammation, Temple University, Philadelphia, PA, United States.,Center for Inflammation and Lung Research, Temple University, Philadelphia, PA, United States
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8
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Hayek H, Kosmider B, Bahmed K. The role of miRNAs in alveolar epithelial cells in emphysema. Biomed Pharmacother 2021; 143:112216. [PMID: 34649347 PMCID: PMC9275516 DOI: 10.1016/j.biopha.2021.112216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 09/13/2021] [Accepted: 09/15/2021] [Indexed: 02/07/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is an inflammatory lung disease becoming one of the leading causes of mortality and morbidity globally. The significant risk factors for COPD are exposure to harmful particles such as cigarette smoke, biomass smoke, and air pollution. Pulmonary emphysema belongs to COPD and is characterized by a unique alveolar destruction pattern resulting in marked airspace enlargement. Alveolar type II (ATII) cells have stem cell potential; they proliferate and differentiate to alveolar type I cells to restore the epithelium after damage. Oxidative stress causes premature cell senescence that can contribute to emphysema development. MiRNAs regulate gene expression, are essential for maintaining ATII cell homeostasis, and their dysregulation contributes to this disease development. They also serve as biomarkers of lung diseases and potential therapeutics. In this review, we summarize recent findings on miRNAs’ role in alveolar epithelial cells in emphysema.
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Affiliation(s)
- Hassan Hayek
- Department of Microbiology, Immunology, and Inflammation, Temple University, Philadelphia, PA 19140, USA; Center for Inflammation and Lung Research, Temple University, Philadelphia, PA 19140, USA
| | - Beata Kosmider
- Department of Microbiology, Immunology, and Inflammation, Temple University, Philadelphia, PA 19140, USA; Center for Inflammation and Lung Research, Temple University, Philadelphia, PA 19140, USA; Department of Biomedical Education and Data Science, Temple University, Philadelphia, PA 19140, USA
| | - Karim Bahmed
- Center for Inflammation and Lung Research, Temple University, Philadelphia, PA 19140, USA; Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, PA 19140, USA.
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9
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Yin L, Li H, Liu Z, Wu W, Cai J, Tang C, Dong Z. PARK7 Protects Against Chronic Kidney Injury and Renal Fibrosis by Inducing SOD2 to Reduce Oxidative Stress. Front Immunol 2021; 12:690697. [PMID: 34093596 PMCID: PMC8176114 DOI: 10.3389/fimmu.2021.690697] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Accepted: 05/06/2021] [Indexed: 11/27/2022] Open
Abstract
Renal fibrosis is the final common pathway to chronic kidney diseases regardless of etiology. Parkinson disease protein 7 (PARK7) is a multifunctional protein involved in various cellular processes, but its pathophysiological role in kidneys remain largely unknown. Here, we have determined the role of PARK7 in renal fibrosis and have further elucidated the underlying mechanisms by using the in vivo mouse model of unilateral ureteric obstruction (UUO) and the in vitro model of transforming growth factor-b (TGFB1) treatment of cultured kidney proximal tubular cells. PARK7 decreased markedly in atrophic kidney tubules in UUO mice, and Park7 deficiency aggravated UUO-induced renal fibrosis, tubular cell apoptosis, ROS production and inflammation. In vitro, TGFB1 treatment induced fibrotic changes in renal tubular cells, which was accompanied by alterations of PARK7. Park7 knockdown exacerbated TGFB1-induced fibrotic changes, cell apoptosis and ROS production, whereas Park7 overexpression or treatment with ND-13 (a PARK7-derived peptide) attenuated these TGFB1-induced changes. Mechanistically, PARK7 translocated into the nucleus of renal tubular cells following TGFB1 treatment or UUO, where it induced the expression of SOD2, an antioxidant enzyme. Taken together, these results indicate that PARK7 protects against chronic kidney injury and renal fibrosis by inducing SOD2 to reduce oxidative stress in tubular cells.
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Affiliation(s)
- Lijun Yin
- Department of Nephrology, Hunan Key Laboratory of Kidney Disease and Blood Purification, The Second Xiangya Hospital at Central South University, Changsha, China
| | - Honglin Li
- Department of Nephrology, Hunan Key Laboratory of Kidney Disease and Blood Purification, The Second Xiangya Hospital at Central South University, Changsha, China
| | - Zhiwen Liu
- Department of Nephrology, Hunan Key Laboratory of Kidney Disease and Blood Purification, The Second Xiangya Hospital at Central South University, Changsha, China
| | - Wenwen Wu
- Department of Nephrology, Hunan Key Laboratory of Kidney Disease and Blood Purification, The Second Xiangya Hospital at Central South University, Changsha, China
| | - Juan Cai
- Department of Nephrology, Hunan Key Laboratory of Kidney Disease and Blood Purification, The Second Xiangya Hospital at Central South University, Changsha, China
| | - Chengyuan Tang
- Department of Nephrology, Hunan Key Laboratory of Kidney Disease and Blood Purification, The Second Xiangya Hospital at Central South University, Changsha, China
| | - Zheng Dong
- Department of Nephrology, Hunan Key Laboratory of Kidney Disease and Blood Purification, The Second Xiangya Hospital at Central South University, Changsha, China
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, Augusta, GA, United States
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10
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Amatullah H, Maron-Gutierrez T, Shan Y, Gupta S, Tsoporis JN, Varkouhi AK, Teixeira Monteiro AP, He X, Yin J, Marshall JC, Rocco PRM, Zhang H, Kuebler WM, Dos Santos CC. Protective function of DJ-1/PARK7 in lipopolysaccharide and ventilator-induced acute lung injury. Redox Biol 2021; 38:101796. [PMID: 33246293 PMCID: PMC7695876 DOI: 10.1016/j.redox.2020.101796] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/30/2020] [Accepted: 11/08/2020] [Indexed: 11/27/2022] Open
Abstract
Oxidative stress is considered one of the early underlying contributors of acute lung injury (ALI) and ventilator-induced lung injury (VILI). DJ-1, also known as PARK7, has a well-established role as an antioxidant. We have previously shown maintaining oxidative balance via the ATF3-Nrf2 axis was important in protection from ALI. Here, we exclusively characterize the role of DJ-1 in sterile LPS-induced ALI and VILI. DJ-1 protein expression was increased after LPS treatment in human epithelial and endothelial cell lines and lungs of wild-type mice. DJ-1 deficient mice exhibited greater susceptibility to LPS-induced acute lung injury as demonstrated by increased cellular infiltration, augmented levels of pulmonary cytokines, enhanced ROS levels and oxidized by-products, increased pulmonary edema and cell death. In a two-hit model of LPS and mechanical ventilation (MV), DJ-1 deficient mice displayed enhanced susceptibility to inflammation and lung injury. Collectively, these results identify DJ-1 as a negative regulator of ROS and inflammation, and suggest its expression protects from sterile lung injury driven by high oxidative stress.
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Affiliation(s)
- Hajera Amatullah
- Keenan Research Center of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON, Canada; Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Tatiana Maron-Gutierrez
- Keenan Research Center of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON, Canada; Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, RJ, Brazil
| | - Yuexin Shan
- Keenan Research Center of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON, Canada
| | - Sahil Gupta
- Keenan Research Center of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON, Canada; Institute of Medical Sciences, University of Toronto, Toronto, ON, Canada
| | - James N Tsoporis
- Keenan Research Center of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON, Canada
| | - Amir K Varkouhi
- Keenan Research Center of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON, Canada
| | | | - Xiaolin He
- Keenan Research Center of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON, Canada
| | - Jun Yin
- Department of Thoracic Surgery, Zhongshan Hospital of Fudan University, Shanghai, 200032, China
| | - John C Marshall
- Keenan Research Center of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON, Canada; Institute of Medical Sciences, University of Toronto, Toronto, ON, Canada
| | - Patricia R M Rocco
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, RJ, Brazil
| | - Haibo Zhang
- Keenan Research Center of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON, Canada; Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada; Institute of Medical Sciences, University of Toronto, Toronto, ON, Canada
| | - Wolfgang M Kuebler
- Keenan Research Center of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON, Canada; Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Claudia C Dos Santos
- Keenan Research Center of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON, Canada; Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada; Institute of Medical Sciences, University of Toronto, Toronto, ON, Canada.
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11
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Xu L, Wu J, Li N, Jiang C, Guo Y, Cao P, Wang D. AITC induces MRP1 expression by protecting against CS/CSE-mediated DJ-1 protein degradation via activation of the DJ-1/Nrf2 axis. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2020; 24:481-492. [PMID: 33093270 PMCID: PMC7585591 DOI: 10.4196/kjpp.2020.24.6.481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 07/09/2020] [Accepted: 07/20/2020] [Indexed: 11/15/2022]
Abstract
The present study aimed to examine the effect of allyl isothiocyanate (AITC) on chronic obstructive pulmonary disease and to investigate whether upregulation of multidrug resistance-associated protein 1 (MRP1) associated with the activation of the PARK7 (DJ-1)/nuclear factor erythroid 2-related factor 2 (Nrf2) axis. Lung function indexes and histopathological changes in mice were assessed by lung function detection and H&E staining. The expression levels of Nrf2, MRP1, heme oxygenase-1 (HO-1), and DJ-1 were determined by immunohistochemistry, Western blotting and reverse transcription-quantitative polymerase chain reaction. Next, the expression of DJ-1 in human bronchial epithelial (16HBE) cells was silenced by siRNA, and the effect of DJ-1 expression level on cigarette smoke extract (CSE)-stimulated protein degradation and AITC-induced protein expression was examined. The expression of DJ-1, Nrf2, HO-1, and MRP1 was significantly decreased in the wild type model group, while the expression of each protein was significantly increased after administration of AITC. Silencing the expression of DJ-1 in 16HBE cells accelerated CSE-induced protein degradation, and significantly attenuated the AITC-induced mRNA and protein expression of Nrf2 and MRP1. The present study describes a novel mechanism by which AITC induces MRP1 expression by protecting against CS/CSEmediated DJ-1 protein degradation via activation of the DJ-1/Nrf2 axis.
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Affiliation(s)
- Lingling Xu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, P.R. China
| | - Jie Wu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, P.R. China.,Department of Pharmacy, Lu'an People's Hospital Affiliated to Anhui Medical University, Lu'an, Anhui 237016, P.R. China
| | - Nini Li
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, P.R. China
| | - Chengjun Jiang
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, P.R. China
| | - Yan Guo
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, P.R. China
| | - Peng Cao
- Laboratory of Cellular and Molecular Biology, Jiangsu Academy of Chinese Medicine, Nanjing, Jiangsu 210028, P.R. China
| | - Dianlei Wang
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, P.R. China.,Anhui Province Key Laboratory of Research & Development of Chinese Medicine, Hefei 230012, P.R. China
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12
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Bao A, Ma A, Zhang H, Qiao L, Ben S, Zhou X, Zhang M. Inducible expression of heat shock protein 20 protects airway epithelial cells against oxidative injury involving the Nrf2-NQO-1 pathway. Cell Biosci 2020; 10:120. [PMID: 33088476 PMCID: PMC7574176 DOI: 10.1186/s13578-020-00483-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 10/10/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Heat shock protein (HSP) 20 is a molecular chaperone that exerts multiple protective functions in various kinds of tissues. However, the expression of HSP20 and its specific functions in airway epithelial cells (AECs) remain elusive. RESULTS In current study, we first confirmed the inducible expression of HSP20 in mouse AECs and in a human bronchial epithelial cell line BEAS-2B cells, under different oxidant stressors. Then by establishing a HSP20-abundant mouse model with repeated low-level-ozone exposures and stimulating this model with a single high-level ozone exposure, we found that the HSP20 abundance along with its enhanced phosphorylation potentially contributed to the alleviation of oxidative injuries, evidenced by the decreases in the bodyweight reduction, the BAL neutrophil accumulation, the AECs shedding, and the BAL concentrations of albumin and E-cadherin. The biological function of HSP20 and its molecular mechanisms were further investigated in BEAS-2B cells that were transfected with HSP20-, unphosphorylatable HSP20(Ala) or empty vector plasmids prior to the stimulation of H2O2, of which its oxidant capacity has been proved to be similar with those of ozone in an air-liquid culture system. We found that the H2O2-induced intracellular ROS level and the early cell apoptosis were attenuated in the HSP20- but not HSP20(Ala)- transfected cells. The intracellular expression of NQO-1 (mRNA and protein) and the intranuclear content of Nrf2 were significantly increased in the HSP20- transfected cells but not in the HSP20(Ala)- and empty vector-transfected cells after the stimulation of H2O2. CONCLUSIONS The inducible expression of HSP20 in AECs by oxidative stress exerts protective roles against oxidative damages, which may involve the activation of the Nrf2-NQO-1 pathway.
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Affiliation(s)
- Aihua Bao
- Department of Respiratory and Critical Care Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Shanghai, 200080 China
| | - Aying Ma
- Department of Respiratory and Critical Care Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Shanghai, 200080 China
| | - Hui Zhang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Henan, China
| | - Lihua Qiao
- Department of Gynecology, The Fourth People’s Hospital of Shanghai, Tong Ji University, Shanghai, China
| | - Suqin Ben
- Department of Respiratory and Critical Care Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Shanghai, 200080 China
| | - Xin Zhou
- Department of Respiratory and Critical Care Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Shanghai, 200080 China
| | - Min Zhang
- Department of Respiratory and Critical Care Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Shanghai, 200080 China
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13
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Beck ME, Zhang Y, Bharathi SS, Kosmider B, Bahmed K, Dahmer MK, Nogee LM, Goetzman ES. The common K333Q polymorphism in long-chain acyl-CoA dehydrogenase (LCAD) reduces enzyme stability and function. Mol Genet Metab 2020; 131:83-89. [PMID: 32389575 PMCID: PMC7606262 DOI: 10.1016/j.ymgme.2020.04.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 04/21/2020] [Accepted: 04/21/2020] [Indexed: 01/19/2023]
Abstract
The fatty acid oxidation enzyme long-chain acyl-CoA dehydrogenase (LCAD) is expressed at high levels in human alveolar type II (ATII) cells in the lung. A common polymorphism causing an amino acid substitution (K333Q) was previously linked to a loss of LCAD antigen in the lung tissue in sudden infant death syndrome. However, the effects of the polymorphism on LCAD function has not been tested. The present work evaluated recombinant LCAD K333Q. Compared to wild-type LCAD protein, LCAD K333Q exhibited significantly reduced enzymatic activity. Molecular modeling suggested that K333 is within interacting distance of the essential FAD cofactor, and the K333Q protein showed a propensity to lose FAD. Exogenous FAD only partially rescued the activity of LCAD K333Q. LCAD K333Q protein was less stable than wild-type when incubated at physiological temperatures, likely explaining the observation of dramatically reduced LCAD antigen in primary ATII cells isolated from individuals homozygous for K333Q. Despite the effect of K333Q on activity, stability, and antigen levels, the frequency of the polymorphism was not increased among infants and children with lung disease.
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Affiliation(s)
- Megan E Beck
- Department of Pediatrics, Division of Medical Genetics, University of Pittsburgh School of Medicine, Children's Hospital of Pittsburgh, 4401 Penn Avenue, Pittsburgh, PA 15224, United States of America
| | - Yuxun Zhang
- Department of Pediatrics, Division of Medical Genetics, University of Pittsburgh School of Medicine, Children's Hospital of Pittsburgh, 4401 Penn Avenue, Pittsburgh, PA 15224, United States of America
| | - Sivakama S Bharathi
- Department of Pediatrics, Division of Medical Genetics, University of Pittsburgh School of Medicine, Children's Hospital of Pittsburgh, 4401 Penn Avenue, Pittsburgh, PA 15224, United States of America
| | - Beata Kosmider
- Department of Physiology, Temple University, Philadelphia, PA 19140, United States of America; Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, PA 19140, United States of America; Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, PA 19140, United States of America; Department of Medicine, National Jewish Health, Denver, CO 80206, United States of America
| | - Karim Bahmed
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, PA 19140, United States of America; Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, PA 19140, United States of America
| | - Mary K Dahmer
- Department of Pediatrics, Division of Critical Care, University of Michigan, Ann Arbor, MI 48109, United States of America
| | - Lawrence M Nogee
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD 21205, United States of America
| | - Eric S Goetzman
- Department of Pediatrics, Division of Medical Genetics, University of Pittsburgh School of Medicine, Children's Hospital of Pittsburgh, 4401 Penn Avenue, Pittsburgh, PA 15224, United States of America.
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14
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Induction of Autophagy by Vasicinone Protects Neural Cells from Mitochondrial Dysfunction and Attenuates Paraquat-Mediated Parkinson's Disease Associated α-Synuclein Levels. Nutrients 2020; 12:nu12061707. [PMID: 32517337 PMCID: PMC7352463 DOI: 10.3390/nu12061707] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 06/02/2020] [Accepted: 06/02/2020] [Indexed: 12/22/2022] Open
Abstract
Mitochondrial dysfunction and disturbed mitochondrial dynamics were found to be common phenomena in the pathogenesis of Parkinson's disease (PD). Vasicinone is a quinazoline alkaloid from Adhatoda vasica. Here, we investigated the autophagy/mitophagy-enhancing effect of vasicinone and explored its neuroprotective mechanism in paraquat-mimic PD modal in SH-SY5Y cells. Vasicinone rescued the paraquat-induced loss of cell viability and mitochondrial membrane potential. Subsequently, the accumulation of mitochondrial reactive oxygen species (ROS) was balanced by an increase in the expression of antioxidant enzymes. Furthermore, vasicinone restored paraquat-impaired autophagy and mitophagy regulators DJ-1, PINK-1 and Parkin in SH-SY5Y cells. The vasicinone mediated autophagy pathways were abrogated by treatment with the autophagy inhibitor 3-MA, which lead to increases α-synuclein accumulation and decreased the expression of p-ULK and ATG proteins and the autophagy marker LC3-II compared to that observed without 3-MA treatment. These results demonstrated that vasicinone exerted neuroprotective effects by upregulating autophagy and PINK-1/Parkin mediated mitophagy in SH-SY5Y cells.
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15
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Carlson J, Price L, Deng H. Nrf2 and the Nrf2-Interacting Network in Respiratory Inflammation and Diseases. NRF2 AND ITS MODULATION IN INFLAMMATION 2020. [PMCID: PMC7241096 DOI: 10.1007/978-3-030-44599-7_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
Atmospheric pollutants and cigarette smoke influence the human respiratory system and induce airway inflammation, injury, and pathogenesis. Activation of the NF-E2-related factor 2 (Nrf2) transcription factor and downstream antioxidant response element (ARE)-mediated transcriptions play a central role in protecting respiratory cells against reactive oxidative species (ROS) that are induced by airway toxins and inflammation. Recent studies have revealed that Nrf2 can also target and activate many genes involved in developmental programs such as cell proliferation, cell differentiation, cell death, and metabolism. Nrf2 is closely regulated by the interaction with kelch-like ECH-associated protein 1 (Keap1), while also directly interacts with a number of other proteins, including inflammatory factors, transcription factors, autophagy mediators, kinases, epigenetic modifiers, etc. It is believed that the multiple target genes and the complicated interacting network of Nrf2 account for the roles of Nrf2 in physiologies and pathogeneses. This chapter summarizes the molecular functions and protein interactions of Nrf2, as well as the roles of Nrf2 and the Nrf2-interacting network in respiratory inflammation and diseases, including acute lung injury (ALI), asthma, chronic obstructive pulmonary disease (COPD), pulmonary fibrosis (PF), cystic fibrosis (CF), viral/bacterial infections, and lung cancers. Therapeutic applications that target Nrf2 and its interacting proteins in respiratory diseases are also reviewed.
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16
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Bahmed K, Lin CR, Simborio H, Karim L, Aksoy M, Kelsen S, Tomar D, Madesh M, Elrod J, Messier E, Mason R, Unterwald EM, Eisenstein TK, Criner GJ, Kosmider B. The role of DJ-1 in human primary alveolar type II cell injury induced by e-cigarette aerosol. Am J Physiol Lung Cell Mol Physiol 2019; 317:L475-L485. [PMID: 31313616 PMCID: PMC6842910 DOI: 10.1152/ajplung.00567.2018] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 06/11/2019] [Accepted: 07/07/2019] [Indexed: 01/18/2023] Open
Abstract
The alveolus participates in gas exchange, which can be impaired by environmental factors and toxins. There is an increase in using electronic cigarettes (e-cigarettes); however, their effect on human primary alveolar epithelial cells is unknown. Human lungs were obtained from nonsmoker organ donors to isolate alveolar type II (ATII) cells. ATII cells produce and secrete pulmonary surfactant and restore the epithelium after damage, and mitochondrial function is important for their metabolism. Our data indicate that human ATII cell exposure to e-cigarette aerosol increased IL-8 levels and induced DNA damage and apoptosis. We also studied the cytoprotective effect of DJ-1 against ATII cell injury. DJ-1 knockdown in human primary ATII cells sensitized cells to mitochondrial dysfunction as detected by high mitochondrial superoxide production, decreased mitochondrial membrane potential, and calcium elevation. DJ-1 knockout (KO) mice were more susceptible to ATII cell apoptosis and lung injury induced by e-cigarette aerosol compared with wild-type mice. Regulation of the oxidative phosphorylation (OXPHOS) is important for mitochondrial function and protection against oxidative stress. Major subunits of the OXPHOS system are encoded by both nuclear and mitochondrial DNA. We found dysregulation of OXPHOS complexes in DJ-1 KO mice after exposure to e-cigarette aerosol, which could disrupt the nuclear/mitochondrial stoichiometry, resulting in mitochondrial dysfunction. Together, our results indicate that DJ-1 deficiency sensitizes ATII cells to damage induced by e-cigarette aerosol leading to lung injury.
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Affiliation(s)
- Karim Bahmed
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, Pennsylvania
- Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, Pennsylvania
| | - Chih-Ru Lin
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, Pennsylvania
- Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, Pennsylvania
| | - Hannah Simborio
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, Pennsylvania
- Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, Pennsylvania
| | - Loukmane Karim
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, Pennsylvania
- Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, Pennsylvania
| | - Mark Aksoy
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, Pennsylvania
- Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, Pennsylvania
| | - Steven Kelsen
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, Pennsylvania
- Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, Pennsylvania
| | - Dhanendra Tomar
- Department of Medical Genetics and Molecular Biochemistry, Temple University, Philadelphia, Pennsylvania
| | - Muniswamy Madesh
- Department of Medical Genetics and Molecular Biochemistry, Temple University, Philadelphia, Pennsylvania
| | - John Elrod
- Department of Medical Genetics and Molecular Biochemistry, Temple University, Philadelphia, Pennsylvania
| | - Elise Messier
- Department of Medicine, National Jewish Health, Denver, Colorado
| | - Robert Mason
- Department of Medicine, National Jewish Health, Denver, Colorado
| | - Ellen M Unterwald
- Department of Pharmacology, Center for Substance Abuse Research, Temple University, Philadelphia, Pennsylvania
| | - Toby K Eisenstein
- Department of Microbiology and Immunology, Temple University, Philadelphia, Pennsylvania
- Center for Substance Abuse Research, Temple University, Philadelphia, Pennsylvania
| | - Gerard J Criner
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, Pennsylvania
- Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, Pennsylvania
| | - Beata Kosmider
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, Pennsylvania
- Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, Pennsylvania
- Department of Medicine, National Jewish Health, Denver, Colorado
- Department of Physiology, Temple University, Philadelphia, Pennsylvania
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17
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The effect of cysteine oxidation on DJ-1 cytoprotective function in human alveolar type II cells. Cell Death Dis 2019; 10:638. [PMID: 31474749 PMCID: PMC6717737 DOI: 10.1038/s41419-019-1833-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 06/14/2019] [Accepted: 06/18/2019] [Indexed: 12/24/2022]
Abstract
DJ-1 is a multifunctional protein with cytoprotective functions. It is localized in the cytoplasm, nucleus, and mitochondria. The conserved cysteine residue at position 106 (Cys106) within DJ-1 serves as a sensor of redox state and can be oxidized to both the sulfinate (-SO2−) and sulfonate (-SO3−) forms. DJ-1 with Cys106-SO2− has cytoprotective activity but high levels of reactive oxygen species can induce its overoxidation to Cys106-SO3−. We found increased oxidative stress in alveolar type II (ATII) cells isolated from emphysema patients as determined by 4-HNE expression. DJ-1 with Cys106-SO3− was detected in these cells by mass spectrometry analysis. Moreover, ubiquitination of Cys106-SO3− DJ-1 was identified, which suggests that this oxidized isoform is targeted for proteasomal destruction. Furthermore, we performed controlled oxidation using H2O2 in A549 cells with DJ-1 knockout generated using CRISPR-Cas9 strategy. Lack of DJ-1 sensitized cells to apoptosis induced by H2O2 as detected using Annexin V and propidium iodide by flow cytometry analysis. This treatment also decreased both mitochondrial DNA amount and mitochondrial ND1 (NADH dehydrogenase 1, subunit 1) gene expression, as well as increased mitochondrial DNA damage. Consistent with the decreased cytoprotective function of overoxidized DJ-1, recombinant Cys106-SO3− DJ-1 exhibited a loss of its thermal unfolding transition, mild diminution of secondary structure in CD spectroscopy, and an increase in picosecond–nanosecond timescale dynamics as determined using NMR. Altogether, our data indicate that very high oxidative stress in ATII cells in emphysema patients induces DJ-1 overoxidation to the Cys106-SO3− form, leading to increased protein flexibility and loss of its cytoprotective function, which may contribute to this disease pathogenesis.
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18
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Kosmider B, Lin CR, Karim L, Tomar D, Vlasenko L, Marchetti N, Bolla S, Madesh M, Criner GJ, Bahmed K. Mitochondrial dysfunction in human primary alveolar type II cells in emphysema. EBioMedicine 2019; 46:305-316. [PMID: 31383554 PMCID: PMC6711885 DOI: 10.1016/j.ebiom.2019.07.063] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 07/17/2019] [Accepted: 07/24/2019] [Indexed: 11/02/2022] Open
Abstract
BACKGROUND Cigarette smoke is the main risk factor of pulmonary emphysema development, which is characterized by alveolar wall destruction. Mitochondria are important for alveolar type II (ATII) cell metabolism due to ATP generation. METHODS We isolated ATII cells from control non-smoker and smoker organ donors, and after lung transplant of patients with emphysema to determine mitochondrial function, dynamics and mitochondrial (mt) DNA damage. FINDINGS We found high mitochondrial superoxide generation and mtDNA damage in ATII cells in emphysema. This correlated with decreased mtDNA amount. We also detected high TOP1-cc and low TDP1 levels in mitochondria in ATII cells in emphysema. This contributed to the decreased resolution of TOP1-cc leading to accumulation of mtDNA damage and mitochondrial dysfunction. Moreover, we used lung tissue obtained from areas with mild and severe emphysema from the same patients. We found a correlation between the impaired fusion and fission as indicated by low MFN1, OPA1, FIS1, and p-DRP1 levels and this disease severity. We detected lower TDP1 expression in severe compared to mild emphysema. INTERPRETATION We found high DNA damage and impairment of DNA damage repair in mitochondria in ATII cells isolated from emphysema patients, which contribute to abnormal mitochondrial dynamics. Our findings provide molecular mechanisms of mitochondrial dysfunction in this disease. FUND: This work was supported by National Institutes of Health (NIH) grant R01 HL118171 (B.K.) and the Catalyst Award from the American Lung Association (K.B.).
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Affiliation(s)
- Beata Kosmider
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, PA 19140, United States of America; Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, PA 19140, United States of America; Department of Physiology, Temple University, Philadelphia, PA 19140, United States of America.
| | - Chih-Ru Lin
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, PA 19140, United States of America; Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, PA 19140, United States of America
| | - Loukmane Karim
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, PA 19140, United States of America; Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, PA 19140, United States of America
| | - Dhanendra Tomar
- Medical Genetics and Molecular Biochemistry, Temple University, Philadelphia, PA 19140, United States of America
| | - Liudmila Vlasenko
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, PA 19140, United States of America; Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, PA 19140, United States of America
| | - Nathaniel Marchetti
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, PA 19140, United States of America; Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, PA 19140, United States of America
| | - Sudhir Bolla
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, PA 19140, United States of America
| | - Muniswamy Madesh
- Medical Genetics and Molecular Biochemistry, Temple University, Philadelphia, PA 19140, United States of America
| | - Gerard J Criner
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, PA 19140, United States of America; Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, PA 19140, United States of America
| | - Karim Bahmed
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, PA 19140, United States of America; Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, PA 19140, United States of America.
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19
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Lin CR, Bahmed K, Tomar D, Marchetti N, Criner GJ, Bolla S, Wilson MA, Madesh M, Kosmider B. The relationship between DJ-1 and S100A8 in human primary alveolar type II cells in emphysema. Am J Physiol Lung Cell Mol Physiol 2019; 317:L791-L804. [PMID: 31313618 DOI: 10.1152/ajplung.00494.2018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Pulmonary emphysema is characterized by alveolar type II (ATII) cell death, destruction of alveolar wall septa, and irreversible airflow limitation. Cigarette smoke induces oxidative stress and is the main risk factor for this disease development. ATII cells isolated from nonsmokers, smokers, and patients with emphysema were used for this study. ATII cell apoptosis in individuals with this disease was detected. DJ-1 and S100A8 have cytoprotective functions against oxidative stress-induced cell injury. Reduced DJ-1 and S100A8 interaction was found in ATII cells in patients with emphysema. The molecular function of S100A8 was determined by an analysis of the oxidation status of its cysteine residues using chemoselective probes. Decreased S100A8 sulfination was observed in emphysema patients. In addition, its lower levels correlated with higher cell apoptosis induced by cigarette smoke extract in vitro. Cysteine at position 106 within DJ-1 is a central redox-sensitive residue. DJ-1 C106A mutant construct abolished the cytoprotective activity of DJ-1 against cell injury induced by cigarette smoke extract. Furthermore, a molecular and complementary relationship between DJ-1 and S100A8 was detected using gain- and loss-of-function studies. DJ-1 knockdown sensitized cells to apoptosis induced by cigarette smoke extract, and S100A8 overexpression provided cytoprotection in the absence of DJ-1. DJ-1 knockout mice were more susceptible to ATII cell apoptosis induced by cigarette smoke compared with wild-type mice. Our results indicate that the impairment of DJ-1 and S100A8 function may contribute to cigarette smoke-induced ATII cell injury and emphysema pathogenesis.
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Affiliation(s)
- Chih-Ru Lin
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, Pennsylvania.,Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, Pennsylvania
| | - Karim Bahmed
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, Pennsylvania.,Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, Pennsylvania
| | - Dhanendra Tomar
- Medical Genetics and Molecular Biochemistry, Temple University, Philadelphia, Pennsylvania
| | - Nathaniel Marchetti
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, Pennsylvania.,Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, Pennsylvania
| | - Gerard J Criner
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, Pennsylvania.,Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, Pennsylvania
| | - Sudhir Bolla
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, Pennsylvania
| | - Mark A Wilson
- Redox Biology Center and Department of Biochemistry, University of Nebraska, Lincoln, Nebraska
| | - Muniswamy Madesh
- Medical Genetics and Molecular Biochemistry, Temple University, Philadelphia, Pennsylvania
| | - Beata Kosmider
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, Pennsylvania.,Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, Pennsylvania.,Department of Physiology, Temple University, Philadelphia, Pennsylvania
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20
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Yin J, Xu R, Wei J, Zhang S. The protective effect of glutaredoxin 1/DJ-1/HSP70 signaling in renal tubular epithelial cells injury induced by ischemia. Life Sci 2019; 223:88-94. [PMID: 30858124 DOI: 10.1016/j.lfs.2019.03.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 03/07/2019] [Indexed: 12/20/2022]
Abstract
AIMS Gluaredoxin1 (GRX1) is an important protein of the cellular antioxidant defense system, but its role in renal epithelial cell injury caused by ischemia remains unclear. In this study, we aimed to gain insight into the role of GRX1 in HK-2 cells with oxygen glucose deprivation (OGD) injury, which served as an in vitro cell model of renal epithelial cell ischemic injury. We investigated the underlying regulation of GRX1, DJ-1, and HSP70 as well as the role of the GRX1/DJ-1/HSP70 signaling pathway in this model. MATERIALS AND METHODS The protein and mRNA expressions were measured by Western blot and qRT-PCR assays, respectively. GRX1 was overexpressed by transfection of pcDNA.3.1-GRX1 and DJ-1 was inhibited by transfection with DJ-1 siRNA. Cell apoptosis, caspase-3 activity, lactate dehydrogenase (LDH) leakage, or superoxide dismutase (SOD) content was tested by the related detection kit. Reactive oxygen species (ROS) level was detected via carboxy-H2DCF-DA. KEY FINDINGS We found that GRX1 was distinctly down-regulated in HK-2 cells after incubation under the OGD condition. GRX1 overexpression markedly constrained cell apoptosis, caspase-3 activity, LDH leakage, and the ROS level, while SOD content was elevated. GRX1 up-regulation increased DJ-1 and HSP70 protein expression, while DJ-1 inhibition significantly offset the effect of GRX1 overexpression on HSP70, indicating that GRX1 could regulate HSP70 via control of DJ-1. Moreover, we observed that HSP70 inhibition removed the constraints imposed by GRX1 overexpression on ROS level, LDH leakage, and caspase-3 activity. SIGNIFICANCE Overall, this study showed that GRX1 minimizes cell injury and apoptosis in HK-2 cells under OGD conditions via regulation of DJ-1 and HSP70 expression.
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Affiliation(s)
- Jian Yin
- Department of Vascular Surgery, China-Japan Union Hospital of Jilin University, Changchun 130033, China
| | - Ruisi Xu
- Endoscopy Center, China-Japan Union Hospital of Jilin University, Changchun 130033, China
| | - Jun Wei
- Department of Pharmacology Base, China-Japan Union Hospital of Jilin University, Changchun 130033, China
| | - Siqi Zhang
- Department of Nephrology, China-Japan Union Hospital of Jilin University, Changchun 130033, China.
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Lin CR, Bahmed K, Criner GJ, Marchetti N, Tuder RM, Kelsen S, Bolla S, Mandapati C, Kosmider B. S100A8 Protects Human Primary Alveolar Type II Cells against Injury and Emphysema. Am J Respir Cell Mol Biol 2019; 60:299-307. [PMID: 30277795 PMCID: PMC6397980 DOI: 10.1165/rcmb.2018-0144oc] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 08/27/2018] [Indexed: 12/21/2022] Open
Abstract
Pulmonary emphysema is characterized by alveolar wall destruction, and cigarette smoking is the main risk factor in this disease development. S100A8 is a member of the S100 protein family, with an oxidative stress-related and antiinflammatory role. The mechanisms of human alveolar type II (ATII) cell injury contributing to emphysema pathophysiology are not completely understood. We wanted to determine whether S100A8 can protect ATII cells against injury induced by cigarette smoke and this disease development. We used freshly isolated ATII cells from nonsmoking and smoking organ donors, as well as patients with emphysema to determine S100A8 function. S100A8 protein and mRNA levels were low in individuals with this disease and correlated with its severity as determined by using lung tissue from areas with mild and severe emphysema obtained from the same patient. Its expression negatively correlated with high oxidative stress as observed by 4-hydroxynonenal levels. We also detected decreased serine phosphorylation within S100A8 by PKAα in this disease. This correlated with increased S100A8 ubiquitination by SYVN1. Moreover, we cultured ATII cells isolated from nonsmokers followed by treatment with cigarette smoke extract. We found that this exposure upregulated S100A8 expression. We also confirmed the cytoprotective role of S100A8 against cell injury using gain- and loss-of-function approaches in vitro. S100A8 knockdown sensitized cells to apoptosis induced by cigarette smoke. In contrast, S100A8 overexpression rescued cell injury. Our results suggest that S100A8 protects ATII cells against injury and cigarette smoke-induced emphysema. Targeting S100A8 may provide a potential therapeutic strategy for this disease.
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Affiliation(s)
- Chih-Ru Lin
- Department of Thoracic Medicine and Surgery
- Center for Inflammation, Translational and Clinical Lung Research, and
| | - Karim Bahmed
- Department of Thoracic Medicine and Surgery
- Center for Inflammation, Translational and Clinical Lung Research, and
| | - Gerard J. Criner
- Department of Thoracic Medicine and Surgery
- Center for Inflammation, Translational and Clinical Lung Research, and
| | - Nathaniel Marchetti
- Department of Thoracic Medicine and Surgery
- Center for Inflammation, Translational and Clinical Lung Research, and
| | - Rubin M. Tuder
- Department of Pathology, School of Medicine, University of Colorado, Aurora, Colorado
| | - Steven Kelsen
- Department of Thoracic Medicine and Surgery
- Center for Inflammation, Translational and Clinical Lung Research, and
| | | | | | - Beata Kosmider
- Department of Thoracic Medicine and Surgery
- Center for Inflammation, Translational and Clinical Lung Research, and
- Department of Physiology, Temple University, Philadelphia, Pennsylvania; and
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22
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Impaired non-homologous end joining in human primary alveolar type II cells in emphysema. Sci Rep 2019; 9:920. [PMID: 30696938 PMCID: PMC6351635 DOI: 10.1038/s41598-018-37000-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 11/27/2018] [Indexed: 12/13/2022] Open
Abstract
Emphysema is characterized by alveolar wall destruction induced mainly by cigarette smoke. Oxidative damage of DNA may contribute to the pathophysiology of this disease. We studied the impairment of the non-homologous end joining (NHEJ) repair pathway and DNA damage in alveolar type II (ATII) cells and emphysema development. We isolated primary ATII cells from control smokers, nonsmokers, and patients with emphysema to determine DNA damage and repair. We found higher reactive oxygen species generation and DNA damage in ATII cells obtained from individuals with this disease in comparison with controls. We also observed low phosphorylation of H2AX, which activates DSBs repair signaling, in emphysema. Our results indicate the impairement of NHEJ, as detected by low XLF expression. We also analyzed the role of DJ-1, which has a cytoprotective activity. We detected DJ-1 and XLF interaction in ATII cells in emphysema, which suggests the impairment of their function. Moreover, we found that DJ-1 KO mice are more susceptible to DNA damage induced by cigarette smoke. Our results suggest that oxidative DNA damage and ineffective the DSBs repair via the impaired NHEJ may contribute to ATII cell death in emphysema.
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23
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Cloning and expression analysis of the nuclear factor erythroid 2-related factor 2 (Nrf2) gene of grass carp (Ctenopharyngodon idellus) and the dietary effect of Eucommia ulmoides on gene expression. AQUACULTURE AND FISHERIES 2018. [DOI: 10.1016/j.aaf.2018.07.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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24
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Vavougios G, Zarogiannis SG, Doskas T. The putative interplay between DJ-1/NRF2 and Dimethyl Fumarate: A potentially important pharmacological target. Mult Scler Relat Disord 2018. [PMID: 29529529 DOI: 10.1016/j.msard.2018.02.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Recent research has outlined that Dimethyl Fumarate (DMF) functions as a gene regulator via multiple pathways, critical among which is the NRF2 cytoprotective cascade. PARK7/DJ-1 is a multifunctional protein that acts as a redox sensor and effector of multiple cytoprotective pathways, including NRF2. Specifically, it prevents the association of NRF2 with its inhibitor KEAP1, allowing NRF2 to enter the nucleus and mediate cytoprotective and antioxidant cascades. It is our hypothesis that while the NRF2-KEAP1 inhibitory complex is reported the main pharmacological target for DMF's NRF dependent functions, no study to date has explored the effects of DMF on DJ-1's expression, and vice-versa, the possibility of a regulatory inadequacy in the upstream, oxidant-responsive DJ-1 activator of the NRF2 cascade.
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Affiliation(s)
- George Vavougios
- Department of Neurology, Athens Naval Hospital, Deinokratous 70, Athens, Greece.
| | - Sotirios G Zarogiannis
- Department of Physiology, Faculty of Medicine, University of Thessaly, BIOPOLIS, Larissa 41500, Greece
| | - Triantafylos Doskas
- Department of Neurology, Athens Naval Hospital, Deinokratous 70, Athens, Greece
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25
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Tan LH, Bahmed K, Lin CR, Marchetti N, Bolla S, Criner GJ, Kelsen S, Madesh M, Kosmider B. The cytoprotective role of DJ-1 and p45 NFE2 against human primary alveolar type II cell injury and emphysema. Sci Rep 2018; 8:3555. [PMID: 29476075 PMCID: PMC5824795 DOI: 10.1038/s41598-018-21790-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 02/06/2018] [Indexed: 12/11/2022] Open
Abstract
Emphysema is characterized by irreversibly enlarged airspaces and destruction of alveolar walls. One of the factors contributing to this disease pathogenesis is an elevation in extracellular matrix (ECM) degradation in the lung. Alveolar type II (ATII) cells produce and secrete pulmonary surfactants and proliferate to restore the epithelium after damage. We isolated ATII cells from control non-smokers, smokers and patients with emphysema to determine the role of NFE2 (nuclear factor, erythroid-derived 2). NFE2 is a heterodimer composed of two subunits, a 45 kDa (p45 NFE2) and 18 kDa (p18 NFE2) polypeptides. Low expression of p45 NFE2 in patients with emphysema correlated with a high ECM degradation. Moreover, we found that NFE2 knockdown increased cell death induced by cigarette smoke extract. We also studied the cross talk between p45 NFE2 and DJ-1. DJ-1 protein is a redox-sensitive chaperone that protects cells from oxidative stress. We detected that cigarette smoke significantly increased p45 NFE2 levels in DJ-1 KO mice compared to wild-type mice. Our results indicate that p45 NFE2 expression is induced by exposure to cigarette smoke, has a cytoprotective activity against cell injury, and its downregulation in human primary ATII cells may contribute to emphysema pathogenesis.
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Affiliation(s)
- Li Hui Tan
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, PA, 19140, United States.,Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, PA, 19140, United States
| | - Karim Bahmed
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, PA, 19140, United States.,Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, PA, 19140, United States
| | - Chih-Ru Lin
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, PA, 19140, United States.,Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, PA, 19140, United States
| | - Nathaniel Marchetti
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, PA, 19140, United States.,Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, PA, 19140, United States
| | - Sudhir Bolla
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, PA, 19140, United States.,Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, PA, 19140, United States
| | - Gerard J Criner
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, PA, 19140, United States.,Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, PA, 19140, United States
| | - Steven Kelsen
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, PA, 19140, United States.,Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, PA, 19140, United States
| | - Muniswamy Madesh
- Medical Genetics and Molecular Biochemistry, Temple University, Philadelphia, PA, 19140, United States
| | - Beata Kosmider
- Department of Thoracic Medicine and Surgery, Temple University, Philadelphia, PA, 19140, United States. .,Center for Inflammation, Translational and Clinical Lung Research, Temple University, Philadelphia, PA, 19140, United States. .,Department of Physiology, Temple University, Philadelphia, PA, 19140, United States.
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26
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Abstract
Alveolar type II (ATII) cells synthesize, store, and secrete pulmonary surfactant and restore the epithelium after damage to the alveolar epithelium. Isolation of human ATII cells provides a valuable tool to study their function under normal and pathophysiological conditions. Moreover, maintenance of their differentiated phenotype in vitro allows further study of their function. Here we describe a protocol for efficient ATII cell isolation, characterization, and culture.
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27
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Salidroside Protects against MPP+-Induced Neuronal Injury through DJ-1-Nrf2 Antioxidant Pathway. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:5398542. [PMID: 29234413 PMCID: PMC5637855 DOI: 10.1155/2017/5398542] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 07/25/2017] [Indexed: 12/20/2022]
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative disorder. We have found that salidroside (Sal) exhibited neuroprotective effects against MPP+ toxicity. However, the molecular mechanism is not fully understood. In this study, we found that Sal significantly prevented MPP+-induced decrease of mRNA and protein expression of Nrf2, GCLc, SOD1, and SOD2 in SH-SY5Y cells. Moreover, silencing of Nrf2 significantly inhibited Sal-induced increase in mRNA and protein expression of GCLc, SOD1, and SOD2. But Nrf2 silence did not significantly impact Sal-exhibited effects on DJ-1 expression. Silencing of Nrf2 significantly suppressed the decrease of apoptosis induced by Sal in MPP+-treated SH-SY5Y cells. Sal significantly prevented MPP+-induced decrease of the mRNA and protein expression of DJ-1 in SH-SY5Y cells. Moreover, silencing of DJ-1 significantly inhibited Sal-induced increase in mRNA and protein expression of Nrf2, GCLc, SOD1, and SOD2 in MPP+-treated SH-SY5Y cells. These results indicated that DJ-1 was an upstream regulator of Nrf2 in the neuroprotective effects of Sal. Furthermore, silencing of DJ-1 significantly suppressed the decrease of apoptosis induced by Sal in MPP+-treated SH-SY5Y cells. In conclusion, Sal prevented MPP+-induced neurotoxicity through upregulation of DJ-1-Nrf2-antioxidant pathway. Our findings provide novel insights into the neuroprotective effects of Sal against PD.
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28
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Lin L, Yin Y, Hou G, Han D, Kang J, Wang Q. Ursolic acid attenuates cigarette smoke-induced emphysema in rats by regulating PERK and Nrf2 pathways. Pulm Pharmacol Ther 2017; 44:111-121. [PMID: 28347799 DOI: 10.1016/j.pupt.2017.03.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 02/28/2017] [Accepted: 03/23/2017] [Indexed: 12/30/2022]
Abstract
OBJECTIVE Ursolic acid (UA) is widely distributed in natural plants to against oxidation, virus, inflammation, tumor, and has been widely used in the pharmaceutical and cosmetics. However, its effect on emphysema of chronic obstructive pulmonary disease (COPD) is unknown. Unfolded protein response is involved in pathogenesis of COPD through PERK pathway. Nuclear erythroid-related factor 2 (Nrf2) regulates antioxidant defensive mechanism in COPD. This study was to explore effect and mechanism of UA on cigarette smoke (CS)-induced rat emphysema. MATERIALS AND METHODS 50 Wistar rats were divided into 5 groups (n = 10 each): rats were exposed to CS for 12 weeks in absence (CS group) or presence of UA at different doses. Control group was treated with UA vehicle only. Histopathology, apoptosis, key protein expression of PERK and Nrf2 pathway were determined in lung tissues. Oxidative stress levels in lung were represented by 8-OHdG, MDA and GSH levels. RESULTS Emphysema-related pathology, based on inter-alveolar wall distance and alveolar density, was less severe in UA groups than in CS group. Compared with CS group, UA treatment down-regulated PERK pathway protein expression, up-regulated expression of Bcl-2 and down-regulated expression of Bax, Cleaved-Caspase3 and Cleaved-Caspase12. Moreover, UA decreased number of apoptotic cells in rat lungs. UA also up-regulated protein expression of Nrf2/ARE pathway and GSH level, decreased expression of oxidant stress factor 8-OHdG and MDA. These improvements were in accordance with attenuation of severity of emphysema. CONCLUSIONS UA attenuates CS-induced rat emphysema by down-regulating PERK pathway to alleviate CS-induced apoptosis in lung, and up-regulating Nrf2 pathway to improve cigarette smoke-induced oxidant stress in rat lungs.
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Affiliation(s)
- Li Lin
- Institute of Respiratory Disease, The First Hospital of China Medical University, Shenyang 110001, China
| | - Yan Yin
- Institute of Respiratory Disease, The First Hospital of China Medical University, Shenyang 110001, China
| | - Gang Hou
- Institute of Respiratory Disease, The First Hospital of China Medical University, Shenyang 110001, China
| | - Dan Han
- Institute of Respiratory Disease, The First Hospital of China Medical University, Shenyang 110001, China
| | - Jian Kang
- Institute of Respiratory Disease, The First Hospital of China Medical University, Shenyang 110001, China
| | - Qiuyue Wang
- Institute of Respiratory Disease, The First Hospital of China Medical University, Shenyang 110001, China.
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29
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Shen ZY, Sun Q, Xia ZY, Meng QT, Lei SQ, Zhao B, Tang LH, Xue R, Chen R. Overexpression of DJ-1 reduces oxidative stress and attenuates hypoxia/reoxygenation injury in NRK-52E cells exposed to high glucose. Int J Mol Med 2016; 38:729-36. [PMID: 27430285 PMCID: PMC4990284 DOI: 10.3892/ijmm.2016.2680] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 06/30/2016] [Indexed: 01/27/2023] Open
Abstract
Patients with diabetes are more vulnerable to renal ischemia/reperfusion (I/R) injury, which is implicated in hyperglycemia-induced oxidative stress. We previously reported that the hyperglycemia-induced inhibition of DJ-1, a novel oncogene that exhibits potent antioxidant activity, is implicated in the severity of myocardial I/R injury. In the present study, we aimed to explore the role of DJ-1 in hypoxia/reoxygenation (H/R) injury in renal cells exposed to high glucose (HG). For this purpose, NRK-52E cells were exposed to HG (30 mM) for 48 h and then exposed to hypoxia for 4 h and reoxygenation for 2 h, which significantly decreased cell viability and superoxide dismutase (SOD) activity, and increased the malondialdehyde (MDA) content, accompanied by a decrease in DJ-1 protein expression. The overexpression of DJ-1 by transfection with a DJ-1 overexpression plasmid exerted protective effects against HG-induced H/R injury, as evidenced by increased CCK-8 levels and SOD activity, the decreased release of lactate dehydrogenase (LDH) and the decreased MDA content, and increased nuclear factor (erythroid-derived 2)-like 2 (Nrf2) and heme oxygenase-1 (HO-1) expression. Similar effects were observed following treatment with the antioxidant, N-acetylcysteine. These results suggest that the overexpression of DJ-1 reduces oxidative stress and attenuates H/R injury in NRK-52E cells exposed to HG.
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Affiliation(s)
- Zi-Ying Shen
- Department of Anesthesiology, Affiliated Hospital of Qingdao University Medical College, Qingdao, Shandong 266003, P.R. China
| | - Qian Sun
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Zhong-Yuan Xia
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Qing-Tao Meng
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Shao-Qing Lei
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Bo Zhao
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Ling-Hua Tang
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Rui Xue
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Rong Chen
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
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