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Moretti AIS, Baksheeva VE, Roman AY, De Bessa TC, Devred F, Kovacic H, Tsvetkov PO. Exploring the Influence of Zinc Ions on the Conformational Stability and Activity of Protein Disulfide Isomerase. Int J Mol Sci 2024; 25:2095. [PMID: 38396772 PMCID: PMC10889200 DOI: 10.3390/ijms25042095] [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: 11/28/2023] [Revised: 01/22/2024] [Accepted: 02/02/2024] [Indexed: 02/25/2024] Open
Abstract
The interplay between metal ion binding and the activity of thiol proteins, particularly within the protein disulfide isomerase family, remains an area of active investigation due to the critical role that these proteins play in many vital processes. This research investigates the interaction between recombinant human PDIA1 and zinc ions, focusing on the subsequent implications for PDIA1's conformational stability and enzymatic activity. Employing isothermal titration calorimetry and differential scanning calorimetry, we systematically compared the zinc binding capabilities of both oxidized and reduced forms of PDIA1 and assessed the structural consequences of this interaction. Our results demonstrate that PDIA1 can bind zinc both in reduced and oxidized states, but with significantly different stoichiometry and more pronounced conformational effects in the reduced form of PDIA1. Furthermore, zinc binding was observed to inhibit the catalytic activity of reduced-PDIA1, likely due to induced alterations in its conformation. These findings unveil a potential regulatory mechanism in PDIA1, wherein metal ion binding under reductive conditions modulates its activity. Our study highlights the potential role of zinc in regulating the catalytic function of PDIA1 through conformational modulation, suggesting a nuanced interplay between metal binding and protein stability in the broader context of cellular redox regulation.
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Affiliation(s)
- Ana Iochabel Soares Moretti
- Vascular Biology Laboratory (LIM64), School of Medicine, Heart Institute (InCor), Cardiopneumology Department, University of São Paulo, Campus Sao Paulo, Sao Paulo 05403-000, Brazil
| | - Viktoria E. Baksheeva
- Aix Marseille Univ, CNRS, UMR 7051, INP, Inst Neurophysiopathol, Fac Sciences Médicales et Paramédicales, 13005 Marseille, France (F.D.); (H.K.)
| | - Andrei Yu. Roman
- Aix Marseille Univ, CNRS, UMR 7051, INP, Inst Neurophysiopathol, Fac Sciences Médicales et Paramédicales, 13005 Marseille, France (F.D.); (H.K.)
| | - Tiphany Coralie De Bessa
- Vascular Biology Laboratory (LIM64), School of Medicine, Heart Institute (InCor), Cardiopneumology Department, University of São Paulo, Campus Sao Paulo, Sao Paulo 05403-000, Brazil
| | - François Devred
- Aix Marseille Univ, CNRS, UMR 7051, INP, Inst Neurophysiopathol, Fac Sciences Médicales et Paramédicales, 13005 Marseille, France (F.D.); (H.K.)
| | - Hervé Kovacic
- Aix Marseille Univ, CNRS, UMR 7051, INP, Inst Neurophysiopathol, Fac Sciences Médicales et Paramédicales, 13005 Marseille, France (F.D.); (H.K.)
| | - Philipp O. Tsvetkov
- Aix Marseille Univ, CNRS, UMR 7051, INP, Inst Neurophysiopathol, Fac Sciences Médicales et Paramédicales, 13005 Marseille, France (F.D.); (H.K.)
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Blackmore K, Houchen CJ, Simonyan H, Arestakesyan H, Stark AK, Dow SA, Kim HR, Jeong JK, Popratiloff A, Young CN. A forebrain-hypothalamic ER stress driven circuit mediates hepatic steatosis during obesity. Mol Metab 2024; 79:101858. [PMID: 38141847 PMCID: PMC10809102 DOI: 10.1016/j.molmet.2023.101858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 10/25/2023] [Accepted: 12/19/2023] [Indexed: 12/25/2023] Open
Abstract
OBJECTIVE Non-alcoholic fatty liver disease (NAFLD) affects 1 in 3 adults and contributes to advanced liver injury and cardiometabolic disease. While recent evidence points to involvement of the brain in NAFLD, the downstream neural circuits and neuronal molecular mechanisms involved in this response, remain unclear. Here, we investigated the role of a unique forebrain-hypothalamic circuit in NAFLD. METHODS Chemogenetic activation and inhibition of circumventricular subfornical organ (SFO) neurons that project to the paraventricular nucleus of the hypothalamus (PVN; SFO→PVN) in mice were used to study the role of SFO→PVN signaling in NAFLD. Novel scanning electron microscopy techniques, histological approaches, molecular biology techniques, and viral methodologies were further used to delineate the role of endoplasmic reticulum (ER) stress within this circuit in driving NAFLD. RESULTS In lean animals, acute chemogenetic activation of SFO→PVN neurons was sufficient to cause hepatic steatosis in a liver sympathetic nerve dependent manner. Conversely, inhibition of this forebrain-hypothalamic circuit rescued obesity-associated NAFLD. Furthermore, dietary NAFLD is associated with marked ER ultrastructural alterations and ER stress in the PVN, which was blunted following reductions in excitatory signaling from the SFO. Finally, selective inhibition of PVN ER stress reduced hepatic steatosis during obesity. CONCLUSIONS Collectively, these findings characterize a previously unrecognized forebrain-hypothalamic-ER stress circuit that is involved in hepatic steatosis, which may point to future therapeutic strategies for NAFLD.
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Affiliation(s)
- Katherine Blackmore
- Department of Pharmacology and Physiology, George Washington University School of Medicine and Health Sciences, Washington, DC, 20037, USA
| | - Claire J Houchen
- Department of Pharmacology and Physiology, George Washington University School of Medicine and Health Sciences, Washington, DC, 20037, USA
| | - Hayk Simonyan
- Department of Pharmacology and Physiology, George Washington University School of Medicine and Health Sciences, Washington, DC, 20037, USA
| | - Hovhannes Arestakesyan
- Department of Pharmacology and Physiology, George Washington University School of Medicine and Health Sciences, Washington, DC, 20037, USA
| | - Alyssa K Stark
- Department of Pharmacology and Physiology, George Washington University School of Medicine and Health Sciences, Washington, DC, 20037, USA
| | - Samantha A Dow
- Department of Pharmacology and Physiology, George Washington University School of Medicine and Health Sciences, Washington, DC, 20037, USA
| | - Han Rae Kim
- Department of Pharmacology and Physiology, George Washington University School of Medicine and Health Sciences, Washington, DC, 20037, USA
| | - Jin Kwon Jeong
- Department of Pharmacology and Physiology, George Washington University School of Medicine and Health Sciences, Washington, DC, 20037, USA
| | - Anastas Popratiloff
- Nanofabrication and Imaging Center, George Washington University, Washington, DC, 20037, USA
| | - Colin N Young
- Department of Pharmacology and Physiology, George Washington University School of Medicine and Health Sciences, Washington, DC, 20037, USA.
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You M, Li S, Yan S, Yao D, Wang T, Wang Y. Exposure to nonylphenol in early life causes behavioural deficits related with autism spectrum disorders in rats. ENVIRONMENT INTERNATIONAL 2023; 180:108228. [PMID: 37802007 DOI: 10.1016/j.envint.2023.108228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/31/2023] [Accepted: 09/20/2023] [Indexed: 10/08/2023]
Abstract
Early-life exposure to environmental endocrine disruptors (EDCs) is a potential risk factor for autism spectrum disorder (ASD). Exposure to nonylphenol (NP), a typical EDC, is known to cause some long-term behavioural abnormalities. Moreover, these abnormal behaviours are the most frequent psychiatric co-morbidities in ASD. However, the direct evidence for the link between NP exposure in early life and ASD-like behavioural phenotypes is still missing. In the present study, typical ASD-like behaviours induced by valproic acid treatment were considered as a positive behavioural control. We investigated impacts on social behaviours following early-life exposure to NP, and explored effects of this exposure on neuronal dendritic spines, mitochondria function, oxidative stress, and endoplasmic reticulum (ER) stress. Furthermore, primary cultured rat neurons were employed as in vitro model to evaluate changes in dendritic spine caused by exposure to NP, and oxidative stress and ER stress were specifically modulated to further explore their roles in these changes. Our results indicated rats exposed to NP in early life showed mild ASD-like behaviours. Moreover, we also found the activation of ER stress triggered by oxidative stress may contribute to dendritic spine decrease and synaptic dysfunction, which may underlie neurobehavioural abnormalities induced by early-life exposure to NP.
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Affiliation(s)
- Mingdan You
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning, People's Republic of China; School of Public Heath, Guizhou Medical University, Guiyang, Guizhou, People's Republic of China
| | - Siyao Li
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning, People's Republic of China; Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang, Liaoning, People's Republic of China
| | - Siyu Yan
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning, People's Republic of China; Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang, Liaoning, People's Republic of China
| | - Dianqi Yao
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning, People's Republic of China; Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang, Liaoning, People's Republic of China
| | - Tingyu Wang
- College of Medical Laboratory, Dalian Medical University, Dalian, Liaoning, People's Republic of China
| | - Yi Wang
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning, People's Republic of China; Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang, Liaoning, People's Republic of China.
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Bourebaba N, Sikora M, Qasem B, Bourebaba L, Marycz K. Sex hormone-binding globulin (SHBG) mitigates ER stress and improves viability and insulin sensitivity in adipose-derived mesenchymal stem cells (ASC) of equine metabolic syndrome (EMS)-affected horses. Cell Commun Signal 2023; 21:230. [PMID: 37697311 PMCID: PMC10496240 DOI: 10.1186/s12964-023-01254-6] [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: 04/06/2023] [Accepted: 08/01/2023] [Indexed: 09/13/2023] Open
Abstract
BACKGROUND Equine metabolic syndrome (EMS), which encompasses insulin resistance, low-grade inflammation and predisposition to laminitis is a critical endocrine disorder among the most prevalent conditions affecting horses from different breeds. According to the most recent research, low human sex hormone-binding globulin (SHBG) serum levels correlate with an increased risk of obesity, insulin resistance and diabetes, and may contribute to overall metabolic dysregulations. This study aimed to test whether exogenous SHBG could protect EMS affected adipose-derived stromal stem cells (EqASCEMS) from apoptosis, oxidative stress, ER stress and thus improve insulin sensitivity. METHODS EqASCEMS wells were treated with two different concentrations (50 and 100 nM) of exogenous SHBG, whose biocompatibility was tested after 24, 48 and 72 h of incubation. Several parameters including cell viability, apoptosis, cell cycle, reactive oxygen species levels, ER stress, Pi3K/MAPK activation and insulin transducers expression were analysed. RESULTS Obtained data demonstrated that exogenous SHBG treatment significantly promoted ASCs cells proliferation, cell cycle and survival with reduced expression of p53 and p21 pro-apoptotic mediators. Furthermore, SHBG alleviated the oxidative stress caused by EMS and reduced the overaccumulation of intracellular ROS, by reducing ROS + cell percentage and regulating gene expression of endogenous antioxidant enzymes (Sod 1, Cat, GPx), SHBG treatment exhibited antioxidant activity by modulating total nitric oxide (NO) levels in EMS cells as well. SHBG treatment dampened the activation of ER stress sensors and effectors in EqASCEMS cells via the upregulation of MiR-7a-5p, the decrease in the expression levels of ATF-6, CHOP and eiF2A and the restoration of PDIA3 chaperone protein levels. As a consequence, SHBG application substantially improved insulin sensitivity through the modulation of Pi3K/Akt/Glut4 insulin signalling cascades. CONCLUSION Our results suggest that the SHBG is endowed with crucial beneficial effects on ASCs metabolic activities and could serve as a valuable therapeutic target for the development of efficient EMS treatment protocols. Video Abstract.
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Affiliation(s)
- Nabila Bourebaba
- Department of Experimental Biology, Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Sciences, Norwida 27B, 50-375, Wrocław, Poland
| | - Mateusz Sikora
- Department of Experimental Biology, Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Sciences, Norwida 27B, 50-375, Wrocław, Poland
| | - Badr Qasem
- Department of Experimental Biology, Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Sciences, Norwida 27B, 50-375, Wrocław, Poland
| | - Lynda Bourebaba
- Department of Experimental Biology, Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Sciences, Norwida 27B, 50-375, Wrocław, Poland
| | - Krzysztof Marycz
- Department of Medicine and Epidemiology, UC Davis School of Veterinary Medicine, Davis, CA, 95516, USA.
- Department of Veterinary Medicine and Epidemiology, Veterinary Institute for Regenerative Cures, School of Veterinary Medicine, University of California, Davis, CA, USA.
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Yadav S, Ahmad F, Rathaur S. Antifilarial efficacy of andrographolide: Ex vivo studies on bovine filarial parasite Setaria cervi. Comp Biochem Physiol C Toxicol Pharmacol 2022; 261:109442. [PMID: 35985449 DOI: 10.1016/j.cbpc.2022.109442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 08/06/2022] [Accepted: 08/12/2022] [Indexed: 11/03/2022]
Abstract
Lymphatic filariasis caused by filarial nematode is an important disease leading to considerable morbidity throughout tropical countries. Even after specific elimination programs, the disease continue to spread in endemic countries. Thus newer therapeutic interventions are urgently needed to control the spread. In the present study, we have seen the effect of andrographolide (andro), a diterpenoid lactone from the leaves of Andrographis paniculata on filarial parasite Setaria cervi. There was time and concentration dependent decrease in motility and viability leading to death of parasite after 6 h of the exposure of andro. Andro showed potential antifilarial activity with an IC50 value of 24.80 μM assessed through MTT assay. There was concentration dependent decrease in the antioxidant enzymes activity and increase in proapoptotic markers after 5 h exposure of andro. Further, molecular docking analysis revealed that andro binds with filarial glutathione-S-transferase at glutathione (GSH) binding site and inhibiting enzyme activity competitively. Andro induced oxidative stress mediated apoptosis in parasites as evidenced by increase in the intracellular reactive oxygen species (ROS) and apoptotic markers.Therefore this study suggested that andro could be further explored as a new antifilarial drug.
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Affiliation(s)
- Smita Yadav
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
| | - Faiyaz Ahmad
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Sushma Rathaur
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
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Hurben AK, Tretyakova NY. Role of Protein Damage Inflicted by Dopamine Metabolites in Parkinson's Disease: Evidence, Tools, and Outlook. Chem Res Toxicol 2022; 35:1789-1804. [PMID: 35994383 PMCID: PMC10225972 DOI: 10.1021/acs.chemrestox.2c00193] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Dopamine is an important neurotransmitter that plays a critical role in motivational salience and motor coordination. However, dysregulated dopamine metabolism can result in the formation of reactive electrophilic metabolites which generate covalent adducts with proteins. Such protein damage can impair native protein function and lead to neurotoxicity, ultimately contributing to Parkinson's disease etiology. In this Review, the role of dopamine-induced protein damage in Parkinson's disease is discussed, highlighting the novel chemical tools utilized to drive this effort forward. Continued innovation of methodologies which enable detection, quantification, and functional response elucidation of dopamine-derived protein adducts is critical for advancing this field. Work in this area improves foundational knowledge of the molecular mechanisms that contribute to dopamine-mediated Parkinson's disease progression, potentially assisting with future development of therapeutic interventions.
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Affiliation(s)
- Alexander K. Hurben
- Department of Medicinal Chemistry and Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Natalia Y. Tretyakova
- Department of Medicinal Chemistry and Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
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7
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She YY, Lin JJ, Su JH, Chang TS, Wu YJ. 4-Carbomethoxyl-10-Epigyrosanoldie E Extracted from Cultured Soft Coral Sinularia sandensis Induced Apoptosis and Autophagy via ROS and Mitochondrial Dysfunction and ER Stress in Oral Cancer Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:3017807. [PMID: 36275891 PMCID: PMC9584738 DOI: 10.1155/2022/3017807] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 10/03/2022] [Indexed: 02/01/2023]
Abstract
Oral cancer is a malignant neoplasia that is more common in Asian than other regions, and men are at higher risk than women. Currently, clinical treatment for oral cancer consists of radiation therapy combined with chemotherapy. Therefore, it is important to find a drug that can inhibit the growth of cancer cells more effectively and safely. In this study, we examined the cytotoxicity of 4-carbomethoxyl-10-epigyrosanoldie E extracted from cultured soft coral Sinularia sandensis towards oral cancer cells. MTT cell proliferation and colony formation assays were used to evaluate cell survival, and immunofluorescence staining and Western blotting were employed to analyze the effects of 4-carbomethoxyl-10-epigyrosanoldie E on apoptosis and autophagy. 4-Carbomethoxyl-10-epigyrosanoldie E treatment also induced the formation of reactive oxygen species (ROS), which are associated with 4-carbomethoxyl-10-epigyrosanoldie E-induced cell death. In addition, the 4-carbomethoxyl-10-epigyrosanoldie E-induced antiproliferation effects on Ca9-22 and Cal-27 cells were associated with the release of cytochrome c from mitochondria, activation of proapoptotic proteins (such as caspase-3/-9, Bax, and Bad), and inhibition of antiapoptotic proteins (Bcl-2, Bcl-xl, and Mcl-1). 4-Carbomethoxyl-10-epigyrosanoldie E treatment also triggered endoplasmic reticulum (ER) stress, leading to activation of the PERK/elF2α/ATF4/CHOP apoptotic pathway. Moreover, increased expressions of Beclin-1, Atg3, Atg5, Atg7, Atg12, Atg 16, LC3-I, and LC3-II proteins indicated that 4-carbomethoxyl-10-epigyrosanoldie E triggered autophagy in oral cancer cells. In conclusion, our findings demonstrated that 4-carbomethoxyl-10-epigyrosanoldie E suppressed human oral cancer cell proliferation and should be further investigated with regard to its potential use as a chemotherapy drug for the treatment of human oral cancer.
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Affiliation(s)
- Yun-Ying She
- Department of Otolaryngology-Head and Neck Surgery, Kaohsiung Veterans General Hospital, Taiwan
| | - Jen-Jie Lin
- Yu Jun Biotechnology Co., Ltd., Kaohsiung, Taiwan
- Department of Food and Nutrition, Meiho University, Pingtung 91202, Taiwan
| | - Jui-Hsin Su
- National Museum of Marine Biology and Aquarium, Pingtung 94450, Taiwan
| | - Ting-Shou Chang
- Department of Otolaryngology-Head and Neck Surgery, Kaohsiung Veterans General Hospital, Taiwan
| | - Yu-Jen Wu
- Yu Jun Biotechnology Co., Ltd., Kaohsiung, Taiwan
- Department of Food and Nutrition, Meiho University, Pingtung 91202, Taiwan
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Ajoolabady A, Wang S, Kroemer G, Klionsky DJ, Uversky VN, Sowers JR, Aslkhodapasandhokmabad H, Bi Y, Ge J, Ren J. ER Stress in Cardiometabolic Diseases: From Molecular Mechanisms to Therapeutics. Endocr Rev 2021; 42:839-871. [PMID: 33693711 DOI: 10.1210/endrev/bnab006] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Indexed: 02/08/2023]
Abstract
The endoplasmic reticulum (ER) hosts linear polypeptides and fosters natural folding of proteins through ER-residing chaperones and enzymes. Failure of the ER to align and compose proper protein architecture leads to accumulation of misfolded/unfolded proteins in the ER lumen, which disturbs ER homeostasis to provoke ER stress. Presence of ER stress initiates the cytoprotective unfolded protein response (UPR) to restore ER homeostasis or instigates a rather maladaptive UPR to promote cell death. Although a wide array of cellular processes such as persistent autophagy, dysregulated mitophagy, and secretion of proinflammatory cytokines may contribute to the onset and progression of cardiometabolic diseases, it is well perceived that ER stress also evokes the onset and development of cardiometabolic diseases, particularly cardiovascular diseases (CVDs), diabetes mellitus, obesity, and chronic kidney disease (CKD). Meanwhile, these pathological conditions further aggravate ER stress, creating a rather vicious cycle. Here in this review, we aimed at summarizing and updating the available information on ER stress in CVDs, diabetes mellitus, obesity, and CKD, hoping to offer novel insights for the management of these cardiometabolic comorbidities through regulation of ER stress.
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Affiliation(s)
- Amir Ajoolabady
- University of Wyoming College of Health Sciences, Laramie, Wyoming 82071, USA
| | - Shuyi Wang
- University of Wyoming College of Health Sciences, Laramie, Wyoming 82071, USA
- School of Medicine Shanghai University, Shanghai 200444, China
| | - Guido Kroemer
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France
- Pôle de Biologie, Hôpital Européen Georges Pompidou, AP-HP, Paris, France
- Suzhou Institute for Systems Medicine, Chinese Academy of Medical Sciences, Suzhou, China
- Karolinska Institute, Department of Women's and Children's Health, Karolinska University Hospital, Stockholm, Sweden
| | - Daniel J Klionsky
- Life Sciences Institute and Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Vladimir N Uversky
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida 33612, USA
| | - James R Sowers
- Dalton and Diabetes and Cardiovascular Center, University of Missouri Columbia, Columbia, Missouri 65212, USA
| | | | - Yaguang Bi
- Shanghai Institute of Cardiovascular Diseases, Department of Cardiology, Zhongshan Hospital Fudan University, Shanghai 200032, China
| | - Junbo Ge
- Shanghai Institute of Cardiovascular Diseases, Department of Cardiology, Zhongshan Hospital Fudan University, Shanghai 200032, China
| | - Jun Ren
- University of Wyoming College of Health Sciences, Laramie, Wyoming 82071, USA
- Shanghai Institute of Cardiovascular Diseases, Department of Cardiology, Zhongshan Hospital Fudan University, Shanghai 200032, China
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington 98195, USA
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Jha V, Kumari T, Manickam V, Assar Z, Olson KL, Min JK, Cho J. ERO1-PDI Redox Signaling in Health and Disease. Antioxid Redox Signal 2021; 35:1093-1115. [PMID: 34074138 PMCID: PMC8817699 DOI: 10.1089/ars.2021.0018] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Significance: Protein disulfide isomerase (PDI) and endoplasmic reticulum oxidoreductase 1 (ERO1) are crucial for oxidative protein folding in the endoplasmic reticulum (ER). These enzymes are frequently overexpressed and secreted, and they contribute to the pathology of neurodegenerative, cardiovascular, and metabolic diseases. Recent Advances: Tissue-specific knockout mouse models and pharmacologic inhibitors have been developed to advance our understanding of the cell-specific functions of PDI and ERO1. In addition to their roles in protecting cells from the unfolded protein response and oxidative stress, recent studies have revealed that PDI and ERO1 also function outside of the cells. Critical Issues: Despite the well-known contributions of PDI and ERO1 to specific disease pathology, the detailed molecular and cellular mechanisms underlying these activities remain to be elucidated. Further, although PDI and ERO1 inhibitors have been identified, the results from previous studies require careful evaluation, as many of these agents are not selective and may have significant cytotoxicity. Future Directions: The functions of PDI and ERO1 in the ER have been extensively studied. Additional studies will be required to define their functions outside the ER.
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Affiliation(s)
- Vishwanath Jha
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Tripti Kumari
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Vijayprakash Manickam
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Zahra Assar
- Cayman Chemical Company, Inc., Ann Arbor, Michigan, USA
| | - Kirk L Olson
- Cayman Chemical Company, Inc., Ann Arbor, Michigan, USA
| | - Jeong-Ki Min
- Biotherapeutics Translational Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea.,Department of Biomolecular Science, KRIBB School of Bioscience, Korea University of Science and Technology, Daejeon, Republic of Korea
| | - Jaehyung Cho
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA.,Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri, USA
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Varghese DS, Ali BR. Pathological Crosstalk Between Oxidized LDL and ER Stress in Human Diseases: A Comprehensive Review. Front Cell Dev Biol 2021; 9:674103. [PMID: 34124059 PMCID: PMC8187772 DOI: 10.3389/fcell.2021.674103] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 04/26/2021] [Indexed: 02/05/2023] Open
Abstract
The oxidative modification of the major cholesterol carrying lipoprotein, oxLDL, is a biomarker as well as a pathological factor in cardiovascular diseases (CVD), type 2 diabetes mellitus (T2DM), obesity and other metabolic diseases. Perturbed cellular homeostasis due to physiological, pathological and pharmacological factors hinder the proper functioning of the endoplasmic reticulum (ER), which is the major hub for protein folding and processing, lipid biosynthesis and calcium storage, thereby leading to ER stress. The cellular response to ER stress is marked by a defensive mechanism called unfolded protein response (UPR), wherein the cell adapts strategies that favor survival. Under conditions of excessive ER stress, when the survival mechanisms fail to restore balance, UPR switches to apoptosis and eliminates the defective cells. ER stress is a major hallmark in metabolic syndromes such as diabetes, non-alcoholic fatty liver disease (NAFLD), neurological and cardiovascular diseases. Though the pathological link between oxLDL and ER stress in cardiovascular diseases is well-documented, its involvement in other diseases is still largely unexplored. This review provides a deep insight into the common mechanisms in the pathogenicity of diseases involving oxLDL and ER stress as key players. In addition, the potential therapeutic intervention of the targets implicated in the pathogenic processes are also explored.
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Affiliation(s)
- Divya Saro Varghese
- Department of Genetics and Genomics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Bassam R Ali
- Department of Genetics and Genomics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates.,Zayed Bin Sultan Center for Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
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11
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Jiang S, Xu W, Chen Z, Cui C, Fan X, Cai J, Gong Y, Geng B. Hydrogen sulphide reduces hyperhomocysteinaemia-induced endothelial ER stress by sulfhydrating protein disulphide isomerase to attenuate atherosclerosis. J Cell Mol Med 2021; 25:3437-3448. [PMID: 33675119 PMCID: PMC8034471 DOI: 10.1111/jcmm.16423] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 02/16/2021] [Accepted: 02/18/2021] [Indexed: 12/13/2022] Open
Abstract
Hyperhomocysteinaemia (HHcy)-impaired endothelial dysfunction including endoplasmic reticulum (ER) stress plays a crucial role in atherogenesis. Hydrogen sulphide (H2 S), a metabolic production of Hcy and gasotransmitter, exhibits preventing cardiovascular damages induced by HHcy by reducing ER stress, but the underlying mechanism is unclear. Here, we made an atherosclerosis with HHcy mice model by ApoE knockout mice and feeding Pagien diet and drinking L-methionine water. H2 S donors NaHS and GYY4137 treatment lowered plaque area and ER stress in this model. Protein disulphide isomerase (PDI), a modulation protein folding key enzyme, was up-regulated in plaque and reduced by H2 S treatment. In cultured human aortic endothelial cells, Hcy dose and time dependently elevated PDI expression, but inhibited its activity, and which were rescued by H2 S. H2 S and its endogenous generation key enzyme-cystathionine γ lyase induced a new post-translational modification-sulfhydration of PDI. Sulfhydrated PDI enhanced its activity, and two cysteine-terminal CXXC domain of PDI was identified by site mutation. HHcy lowered PDI sulfhydration association ER stress, and H2 S rescued it but this effect was blocked by cysteine site mutation. Conclusively, we demonstrated that H2 S sulfhydrated PDI and enhanced its activity, reducing HHcy-induced endothelial ER stress to attenuate atherosclerosis development.
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Affiliation(s)
- Shan Jiang
- Institute of Hypoxia Medicine, Wenzhou Medical University, Zhejiang, China
| | - Wenjing Xu
- Department of Pathology, Xi'an Medical University, Shanxi, China
| | - Zhenzhen Chen
- State Key Laboratory of Cardiovascular Disease, Hypertension Center, National Center for Cardiovascular Diseases, Fuwai Hospital of Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Changting Cui
- State Key Laboratory of Cardiovascular Disease, Hypertension Center, National Center for Cardiovascular Diseases, Fuwai Hospital of Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiaofang Fan
- Institute of Hypoxia Medicine, Wenzhou Medical University, Zhejiang, China
| | - Jun Cai
- State Key Laboratory of Cardiovascular Disease, Hypertension Center, National Center for Cardiovascular Diseases, Fuwai Hospital of Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yongsheng Gong
- Institute of Hypoxia Medicine, Wenzhou Medical University, Zhejiang, China
| | - Bin Geng
- Institute of Hypoxia Medicine, Wenzhou Medical University, Zhejiang, China.,State Key Laboratory of Cardiovascular Disease, Hypertension Center, National Center for Cardiovascular Diseases, Fuwai Hospital of Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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12
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Gęgotek A, Atalay S, Rogowska-Wrzesińska A, Skrzydlewska E. The Effect of Cannabidiol on UV-Induced Changes in Intracellular Signaling of 3D-Cultured Skin Keratinocytes. Int J Mol Sci 2021; 22:1501. [PMID: 33540902 PMCID: PMC7867360 DOI: 10.3390/ijms22031501] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 01/27/2021] [Accepted: 01/30/2021] [Indexed: 01/09/2023] Open
Abstract
Human epidermal keratinocytes are constantly exposed to UV radiation. As a result, there is a significant need for safe and effective compounds to protect skin cells against this environmental damage. This study aimed to analyze the effect of phytocannabinoid-cannabinoid (CBD)-on the proteome of UVA/B irradiated keratinocytes. The keratinocytes were cultured in a three-dimensional (3D) system, designed to mimic epidermal conditions closely. The obtained results indicate that CBD protected against the harmful effects of UVA/B radiation. CBD decreased the expression of proinflammatory proteins, including TNFα/NFκB and IκBKB complex and decreased the expression of proteins involved in de novo protein biosynthesis, which are increased in UVA/B-irradiated cells. Additionally, CBD enhanced the UV-induced expression of 20S proteasome subunits. CBD also protected protein structures from 4-hydroxynonenal (HNE)-binding induced by UV radiation, which primarily affects antioxidant enzymes. CBD-through its antioxidant/anti-inflammatory activity and regulation of protein biosynthesis and degradation-protects skin cells against UVA/B-induced changes. In the future, its long-term use in epidermal cells should be investigated.
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Affiliation(s)
- Agnieszka Gęgotek
- Department of Analytical Chemistry, Medical University of Bialystok, Mickiewicza 2D, 15-222 Bialystok, Poland; (S.A.); (E.S.)
| | - Sinemyiz Atalay
- Department of Analytical Chemistry, Medical University of Bialystok, Mickiewicza 2D, 15-222 Bialystok, Poland; (S.A.); (E.S.)
| | - Adelina Rogowska-Wrzesińska
- Department of Biochemistry and Molecular Biology, University of Southern Danmark, Campusvej 55, DK-5230 Odense M, Denmark;
| | - Elżbieta Skrzydlewska
- Department of Analytical Chemistry, Medical University of Bialystok, Mickiewicza 2D, 15-222 Bialystok, Poland; (S.A.); (E.S.)
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13
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Fernandes DC, Wosniak J, Gonçalves RC, Tanaka LY, Fernandes CG, Zanatta DB, de Mattos ABM, Strauss BE, Laurindo FRM. PDIA1 acts as master organizer of NOX1/NOX4 balance and phenotype response in vascular smooth muscle. Free Radic Biol Med 2021; 162:603-614. [PMID: 33227407 DOI: 10.1016/j.freeradbiomed.2020.11.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 10/29/2020] [Accepted: 11/17/2020] [Indexed: 02/05/2023]
Abstract
Changes in vascular smooth muscle cell (VSMC) phenotype underlie disease pathophysiology and are strongly regulated by NOX NADPH oxidases, with NOX1 favoring synthetic proliferative phenotype and NOX4 supporting differentiation. Growth factor-triggered NOX1 expression/activity strictly depends on the chaperone oxidoreductase protein disulfide isomerase-A1 (PDIA1). Intracellular PDIA1 is required for VSMC migration and cytoskeleton organization, while extracellular PDIA1 fine-tunes cytoskeletal mechanoadaptation and vascular remodeling. We hypothesized that PDIA1 orchestrates NOX1/NOX4 balance and VSMC phenotype. Using an inducible PDIA1 overexpression model in VSMC, we showed that early PDIA1 overexpression (for 24-48 h) increased NOX1 expression, hydrogen peroxide steady-state levels and spontaneous VSMC migration distances. Sustained PDIA1 overexpression for 72 h and 96 h supported high NOX1 levels while also increasing NOX4 expression and, remarkably, switched VSMC phenotype to differentiation. Differentiation was preceded by increased nuclear myocardin and serum response factor-response element activation, with no change in cell viability. Both NOX1 and hydrogen peroxide were necessary for later PDIA1-induced VSMC differentiation. In primary VSMC, PDIA1 knockdown decreased nuclear myocardin and increased the proliferating cell nuclear antigen expression. Newly-developed PDIA1-overexpressing mice (TgPDIA1) exhibited normal general and cardiovascular baseline phenotypes. However, in TgPDIA1 carotids, NOX1 was decreased while NOX4 and calponin expressions were enhanced, indicating overdifferentiation vs. normal carotids. Moreover, in a rabbit overdistension injury model during late vascular repair, PDIA1 silencing impaired VSMC redifferentiation and NOX1/NOX4 balance. Our results suggest a model in which PDIA1 acts as an upstream organizer of NOX1/NOX4 balance and related VSMC phenotype, accounting for baseline differentiation setpoint.
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Affiliation(s)
- Denise C Fernandes
- Vascular Biology Laboratory, Heart Institute (InCor), University of Sao Paulo School of Medicine, Sao Paulo, Brazil.
| | - João Wosniak
- Vascular Biology Laboratory, Heart Institute (InCor), University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - Renata C Gonçalves
- Vascular Biology Laboratory, Heart Institute (InCor), University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - Leonardo Y Tanaka
- Vascular Biology Laboratory, Heart Institute (InCor), University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - Carolina G Fernandes
- Vascular Biology Laboratory, Heart Institute (InCor), University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - Daniela B Zanatta
- Viral Vector Laboratory, Center for Translational Research in Oncology/LIM24, Cancer Institute of Sao Paulo, School of Medicine, Sao Paulo, Brazil
| | - Ana Barbosa M de Mattos
- Laboratory of Genetic and Molecular Cardiology, Heart Institute (InCor), University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - Bryan E Strauss
- Viral Vector Laboratory, Center for Translational Research in Oncology/LIM24, Cancer Institute of Sao Paulo, School of Medicine, Sao Paulo, Brazil
| | - Francisco R M Laurindo
- Vascular Biology Laboratory, Heart Institute (InCor), University of Sao Paulo School of Medicine, Sao Paulo, Brazil.
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14
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Gianazza E, Brioschi M, Martinez Fernandez A, Casalnuovo F, Altomare A, Aldini G, Banfi C. Lipid Peroxidation in Atherosclerotic Cardiovascular Diseases. Antioxid Redox Signal 2021; 34:49-98. [PMID: 32640910 DOI: 10.1089/ars.2019.7955] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Significance: Atherosclerotic cardiovascular diseases (ACVDs) continue to be a primary cause of mortality worldwide in adults aged 35-70 years, occurring more often in countries with lower economic development, and they constitute an ever-growing global burden that has a considerable socioeconomic impact on society. The ACVDs encompass diverse pathologies such as coronary artery disease and heart failure (HF), among others. Recent Advances: It is known that oxidative stress plays a relevant role in ACVDs and some of its effects are mediated by lipid oxidation. In particular, lipid peroxidation (LPO) is a process under which oxidants such as reactive oxygen species attack unsaturated lipids, generating a wide array of oxidation products. These molecules can interact with circulating lipoproteins, to diffuse inside the cell and even to cross biological membranes, modifying target nucleophilic sites within biomolecules such as DNA, lipids, and proteins, and resulting in a plethora of biological effects. Critical Issues: This review summarizes the evidence of the effect of LPO in the development and progression of atherosclerosis-based diseases, HF, and other cardiovascular diseases, highlighting the role of protein adduct formation. Moreover, potential therapeutic strategies targeted at lipoxidation in ACVDs are also discussed. Future Directions: The identification of valid biomarkers for the detection of lipoxidation products and adducts may provide insights into the improvement of the cardiovascular risk stratification of patients and the development of therapeutic strategies against the oxidative effects that can then be applied within a clinical setting.
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Affiliation(s)
- Erica Gianazza
- Proteomics Unit, Monzino Cardiology Center IRCCS, Milan, Italy
| | - Maura Brioschi
- Proteomics Unit, Monzino Cardiology Center IRCCS, Milan, Italy
| | | | | | | | - Giancarlo Aldini
- Department of Pharmaceutical Sciences, University of Milan, Milan, Italy
| | - Cristina Banfi
- Proteomics Unit, Monzino Cardiology Center IRCCS, Milan, Italy
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15
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Xu H, Liu Q, Song X, Wang C, Wang X, Ma S, Wang X, Feng Y, Meng X, Liu X, Wang W, Lou K. Fluorophore-Promoted Facile Deprotonation and Exocyclic Five-Membered Ring Cyclization for Selective and Dynamic Tracking of Labile Glyoxals. Anal Chem 2020; 92:13829-13838. [DOI: 10.1021/acs.analchem.0c02447] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Huan Xu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| | - Qianqian Liu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xiaodong Song
- Medical Laboratory Department, Hua Shan Hospital North, Fudan University, 108 Luxiang Road, Shanghai 201907, China
| | - Chao Wang
- Fluorescence Research Group, Singapore University of Technology and Design, 8 Somapah Road 487372 Singapore
| | - Xinru Wang
- School of Chemistry and Chemical Engineering, Anhui University, 111 Jiulong Road, Hefei, Anhui 230601, China
| | - Shengnan Ma
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xiaolei Wang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yan Feng
- School of Chemistry and Chemical Engineering, Anhui University, 111 Jiulong Road, Hefei, Anhui 230601, China
| | - Xiangming Meng
- School of Chemistry and Chemical Engineering, Anhui University, 111 Jiulong Road, Hefei, Anhui 230601, China
| | - Xiaogang Liu
- Fluorescence Research Group, Singapore University of Technology and Design, 8 Somapah Road 487372 Singapore
| | - Wei Wang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
- Department of Pharmacology and Toxicology and BIO5 Institute, University of Arizona, Tucson, Arizona 85721-0207, United States
| | - Kaiyan Lou
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
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16
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Pokkunuri ID, Lokhandwala MF, Banday AA. Protein disulfide isomerase inhibition impairs Keap1/Nrf2 signaling and mitochondrial function and induces apoptosis in renal proximal tubular cells. Am J Physiol Renal Physiol 2020; 319:F686-F696. [PMID: 32830535 DOI: 10.1152/ajprenal.00049.2020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Renal proximal tubular apoptosis plays a critical role in kidney health and disease. However, cellular molecules that trigger renal apoptosis remain elusive. Here, we evaluated the effect of inhibiting protein disulfide isomerase (PDI), a critical thioredoxin chaperone protein, on apoptosis as well as the underlying mechanisms in human renal proximal tubular (HK2) cells. HK2 cells were transfected with PDI-specific siRNA in the absence and presence of an antioxidant, tempol. PDI siRNA transfection resulted in a decrease of ~70% in PDI protein expression and enzyme activity. PDI inhibition increased caspase-3 activity and induced profound cell apoptosis. Mitochondrial function, as assessed by mitochondrial cytochrome c levels, mitochondrial membrane potential, oxygen consumption, and ATP levels, was significantly reduced in PDI-inhibited cells. Also, PDI inhibition caused nuclear factor erythroid 2-related factor 2 (Nrf2; a redox-sensitive transcription factor) cytoplasmic sequestration, decreased superoxide dismutase and glutathione-S-transferase activities, and increased oxidative stress. In PDI-inhibited cells, tempol reduced apoptosis, caspase-3 activity, and oxidative stress and also restored Nrf2 nuclear translocation and mitochondrial function. Silencing Nrf2 in the cells abrogated the beneficial effect of tempol, whereas Kelch-like ECH-associated protein 1 (an Nrf2 regulatory protein) silencing protected cells from PDI inhibitory effects. Collectively, our data indicate that PDI inhibition diminishes Nrf2 nuclear translocation, causing oxidative stress that further triggers mitochondrial dysfunction and renal cell apoptosis. This study suggests an important role for PDI in renal cell apoptosis involving Nrf2 and mitochondrial dysfunction.
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Affiliation(s)
- Indira D Pokkunuri
- Heart and Kidney Institute, College of Pharmacy, University of Houston, Houston, Texas
| | - Mustafa F Lokhandwala
- Heart and Kidney Institute, College of Pharmacy, University of Houston, Houston, Texas
| | - Anees Ahmad Banday
- Heart and Kidney Institute, College of Pharmacy, University of Houston, Houston, Texas
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17
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Özcelik D. Treatment of Neuroblastoma Cells with Inhibitors of Protein Disulfide Isomerase Upregulates NQO1 Activity. Chem Res Toxicol 2020; 33:2099-2107. [DOI: 10.1021/acs.chemrestox.0c00101] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Dennis Özcelik
- Department of Drug Design and Pharmacology, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
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18
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Korfei M, MacKenzie B, Meiners S. The ageing lung under stress. Eur Respir Rev 2020; 29:29/156/200126. [DOI: 10.1183/16000617.0126-2020] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 06/22/2020] [Indexed: 01/10/2023] Open
Abstract
Healthy ageing of the lung involves structural changes but also numerous cell-intrinsic and cell-extrinsic alterations. Among them are the age-related decline in central cellular quality control mechanisms such as redox and protein homeostasis. In this review, we would like to provide a conceptual framework of how impaired stress responses in the ageing lung, as exemplified by dysfunctional redox and protein homeostasis, may contribute to onset and progression of COPD and idiopathic pulmonary fibrosis (IPF). We propose that age-related imbalanced redox and protein homeostasis acts, amongst others (e.g.cellular senescence), as a “first hit” that challenges the adaptive stress-response pathways of the cell, increases the level of oxidative stress and renders the lung susceptible to subsequent injury and disease. In both COPD and IPF, additional environmental insults such as smoking, air pollution and/or infections then serve as “second hits” which contribute to persistently elevated oxidative stress that overwhelms the already weakened adaptive defence and repair pathways in the elderly towards non-adaptive, irremediable stress thereby promoting development and progression of respiratory diseases. COPD and IPF are thus distinct horns of the same devil, “lung ageing”.
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19
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Kubra KT, Akhter MS, Uddin MA, Barabutis N. Unfolded protein response in cardiovascular disease. Cell Signal 2020; 73:109699. [PMID: 32592779 DOI: 10.1016/j.cellsig.2020.109699] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 06/20/2020] [Accepted: 06/21/2020] [Indexed: 12/21/2022]
Abstract
The unfolded protein response (UPR) is a highly conserved molecular machinery, which protects the cells against a diverse variety of stimuli. Activation of this element has been associated with both human health and disease. The purpose of the current manuscript is to provide the most updated information on the involvement of UPR towards the improvement; or deterioration of cardiovascular functions. Since UPR is consisted of three distinct elements, namely the activating transcription factor 6, the protein kinase RNA-like endoplasmic reticulum kinase; and the inositol-requiring enzyme-1α, a highly orchestrated manipulation of those molecular branches may provide new therapeutic possibilities against the severe outcomes of cardiovascular disease.
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Affiliation(s)
- Khadeja-Tul Kubra
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, LA 71201, USA
| | - Mohammad S Akhter
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, LA 71201, USA
| | - Mohammad A Uddin
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, LA 71201, USA
| | - Nektarios Barabutis
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, LA 71201, USA.
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20
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Sun JL, Abd El-Aty AM, Jeong JH, Jung TW. Ginsenoside Rb2 Ameliorates LPS-Induced Inflammation and ER Stress in HUVECs and THP-1 Cells via the AMPK-Mediated Pathway. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2020; 48:967-985. [PMID: 32431178 DOI: 10.1142/s0192415x20500469] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Inflammation and endoplasmic reticulum (ER) stress have been documented to contribute to the development of atherosclerosis. Ginsenoside Rb2 has been reported to exhibit antidiabetic effects. However, the effects of Rb2 on atherosclerotic responses such as inflammation and ER stress in endothelial cells and monocytes remain unclear. In this study, the expression of inflammation and ER stress markers was determined using a Western blotting method. Concentrations of tumor necrosis factor alpha (TNF[Formula: see text]) and monocyte chemoattractant protein-1 (MCP-1) in culture media were assessed by enzyme-linked immunosorbent assay (ELISA) and apoptosis was evaluated by a cell viability assay and a caspase-3 activity measurement kit. We found that exposure of HUVECs and THP-1 monocytes to Rb2 attenuated inflammation and ER stress, resulting in amelioration of apoptosis and THP-1 cell adhesion to HUVECs under lipopolysaccharide (LPS) condition. Increased AMPK phosphorylation and heme oxygenase (HO)-1 expression, including GPR120 expression were observed in Rb2-treated HUVECs and THP-1 monocytes. Downregulation of both, AMPK phosphorylation and HO-1expression rescued these observed changes. Furthermore, GPR120 siRNA mitigated Rb2-induced AMPK phosphorylation. These results suggest that Rb2 inhibits LPS-mediated apoptosis and THP-1 cell adhesion to HUVECs by GPR120/AMPK/HO-1-associated attenuating inflammation and ER stress. Therefore, Rb2 can be used as a potential therapeutic molecule for treatment of atherosclerosis.
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Affiliation(s)
- Jaw Long Sun
- Department of Pharmacology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - A M Abd El-Aty
- Department of Medical Pharmacology, Medical Faculty, Ataturk University, Erzurum, Turkey.,Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, 12211 Giza, Egypt
| | - Ji Hoon Jeong
- Department of Pharmacology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - Tae Woo Jung
- Department of Pharmacology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
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21
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Protein disulfide isomerase in cardiovascular disease. Exp Mol Med 2020; 52:390-399. [PMID: 32203104 PMCID: PMC7156431 DOI: 10.1038/s12276-020-0401-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 01/20/2020] [Accepted: 02/04/2020] [Indexed: 01/07/2023] Open
Abstract
Protein disulfide isomerase (PDI) participates in the pathogenesis of numerous diseases. Increasing evidence indicates that intravascular cell-derived PDI plays an important role in the initiation and progression of cardiovascular diseases, including thrombosis and vascular inflammation. Recent studies with PDI conditional knockout mice have advanced our understanding of the function of cell-specific PDI in disease processes. Furthermore, the identification and development of novel small-molecule PDI inhibitors has led into a new era of PDI research that transitioned from the bench to bedside. In this review, we will discuss recent findings on the regulatory role of PDI in cardiovascular disease. Efforts to untangle the functions of a large family of enzymes could lead researchers to new therapies for diverse cardiovascular diseases. Members of the protein disulfide isomerase (PDI) family chemically modify other proteins in ways that can alter both their structure and biological activity. Jaehyung Cho of the University of Illinois at Chicago, USA and coworkers have reviewed numerous studies linking PDI with cardiovascular diseases, including thrombosis, heart attack, vascular inflammation, and stroke. The authors also report progress in developing small-molecule PDI inhibitors that could yield the treatment for these conditions.
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22
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Zhao G, Sun H, Zhang T, Liu JX. Copper induce zebrafish retinal developmental defects via triggering stresses and apoptosis. Cell Commun Signal 2020; 18:45. [PMID: 32169084 PMCID: PMC7071659 DOI: 10.1186/s12964-020-00548-3] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 03/06/2020] [Indexed: 02/07/2023] Open
Abstract
Background The disorder of copper homeostasis is linked with disease and developmental defects, and excess copper_nanoparticles (CuNPs) and ion (Cu2+) will induce developmental malformation and disease in organisms. However, little knowledge is available regarding its potential regulation mechanisms, and little study links excess copper with retinal developmental malformation and disease. Methods Embryos were stressed with copper (CuNPs and Cu2+), and cell proliferation and apoptosis assays, reactive oxygen species (ROS) and endoplasmic reticulum (ER) signaling detections, and genetic mutants cox17−/− and atp7a−/− application, were used to evaluate copper induced retinal developmental malformation and the underlying genetic and biological regulating mechanisms. Results Copper reduced retinal cells and down-regulated expression of retinal genes, damaged the structures of ER and mitochondria in retinal cells, up-regulated unfold protein responses (UPR) and ROS, and increased apoptosis in copper-stressed retinal cells. The copper induced retinal defects could be significantly neutralized by ROS scavengers reduced Glutathione (GSH) & N-acetylcysteine (NAC) and ER stress inhibitor 4- phenylbutyric acid (PBA). Blocking the transportation of copper to mitochondria, or to trans-Golgi network and to be exported into plasma, by deleting gene cox17 or atp7a, could alleviate retinal developmental defects in embryos under copper stresses. Conclusions This is probably the first report to reveal that copper nanoparticles and ions induce retinal developmental defects via upregulating UPR and ROS, leading to apoptosis in zebrafish embryonic retinal cells. Integrated function of copper transporter (Cox17 and Atp7a) is necessary for copper induced retinal defects. Graphical abstract ![]()
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Affiliation(s)
- Guang Zhao
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, China
| | - HaoJie Sun
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ting Zhang
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jing-Xia Liu
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, China.
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23
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Peng Z, Chen Y, Cao H, Zou H, Wan X, Zeng W, Liu Y, Hu J, Zhang N, Xia Z, Liu Z, Cheng Q. Protein disulfide isomerases are promising targets for predicting the survival and tumor progression in glioma patients. Aging (Albany NY) 2020; 12:2347-2372. [PMID: 32023222 PMCID: PMC7041756 DOI: 10.18632/aging.102748] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 01/07/2020] [Indexed: 12/24/2022]
Abstract
The present study focused on the expression patterns, prognostic values and potential mechanism of the PDI family in gliomas. Most PDI family members’ mRNA expressions were observed significantly different between gliomas classified by clinical features. Construction of the PDI signature, cluster and risk score models of glioma was done using GSVA, consensus clustering analysis, and LASSO Cox regression analysis respectively. High values of PDI signature/ risk score and cluster 1 in gliomas were associated with malignant clinicopathological characteristics and poor prognosis. Analysis of the distinctive genomic alterations in gliomas revealed that many cases having high PDI signature and risk score were associated with genomic aberrations of driver oncogenes. GSVA analysis showed that PDI family was involved in many signaling pathways in ERAD, apoptosis, and MHC class I among many more. Prognostic nomogram revealed that the risk score was a good prognosis indicator for gliomas. The qRT-PCR and immunohistochemistry confirmed that P4HB, PDIA4 and PDIA5 were overexpressed in gliomas. In summary, this research highlighted the clinical importance of PDI family in tumorigenesis and progression in gliomas.
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Affiliation(s)
- Zhigang Peng
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan, P. R. China
| | - Yu Chen
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
| | - Hui Cao
- Department of Psychiatry, The Second People's Hospital of Hunan Province, The Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410007, Hunan, P. R. China
| | - Hecun Zou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, Hunan, P. R. China
| | - Xin Wan
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan, P. R. China
| | - Wenjing Zeng
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, Hunan, P. R. China
| | - Yanling Liu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, Hunan, P. R. China
| | - Jiaqing Hu
- Department of Emergency, The Second People's Hospital of Hunan Province, The Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410007, Hunan, P. R. China
| | - Nan Zhang
- School of Bioinformatics Science and Technology, Harbin Medical University, Harbin 150081, Heilongjiang, P. R. China
| | - Zhiwei Xia
- Department of Neurology, Xiangya Hospital, Central South University, Changsha 410008, Hunan, P. R. China
| | - Zhixiong Liu
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan, P. R. China
| | - Quan Cheng
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan, P. R. China.,Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha 410008, Hunan, P. R. China.,Institute of Clinical Pharmacology, Central South University; Hunan Key Laboratory of Pharmacogenetics, Changsha 410078, Hunan, P. R. China
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24
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Goan YG, Wu WT, Liu CI, Neoh CA, Wu YJ. Involvement of Mitochondrial Dysfunction, Endoplasmic Reticulum Stress, and the PI3K/AKT/mTOR Pathway in Nobiletin-Induced Apoptosis of Human Bladder Cancer Cells. Molecules 2019; 24:molecules24162881. [PMID: 31398899 PMCID: PMC6719163 DOI: 10.3390/molecules24162881] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 08/01/2019] [Accepted: 08/06/2019] [Indexed: 12/11/2022] Open
Abstract
Nobiletin (NOB) is a polymethoxylated flavonoid isolated from citrus fruit peel that has been shown to possess anti-tumor, antithrombotic, antifungal, anti-inflammatory and anti-atherosclerotic activities. The main purpose of this study was to explore the potential of using NOB to induce apoptosis in human bladder cancer cells and study the underlying mechanism. Using an MTT assay, agarose gel electrophoresis, a wound-healing assay, flow cytometry, and western blot analysis, this study investigated the signaling pathways involved in NOB-induced apoptosis in BFTC human bladder cancer cells. Our results showed that NOB at concentrations of 60, 80, and 100 μM inhibited cell growth by 42%, 62%, and 80%, respectively. Cells treated with 60 μM NOB demonstrated increased DNA fragmentation, and flow cytometry analysis confirmed that the treatment caused late apoptotic cell death. Western blot analysis showed that mitochondrial dysfunction occurred in NOB-treated BFTC cells, leading to cytochrome C release into cytosol, activation of pro-apoptotic proteins (caspase-3, caspase-9, Bad, and Bax), and inhibition of anti-apoptotic proteins (Mcl-1, Bcl-xl, and Bcl-2). NOB-induced apoptosis was also mediated by regulating endoplasmic reticulum stress via the PERK/elF2α/ATF4/CHOP pathway, and downregulating the PI3K/AKT/mTOR pathway. Our results suggested that the cytotoxic and apoptotic effects of NOB on bladder cancer cells are associated with endoplasmic reticulum stress and mitochondrial dysfunction.
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Affiliation(s)
- Yih-Gang Goan
- Department of Surgery, Kaohsiung Veterans General Hospital Pingtung Branch, Pingtung 91202, Taiwan
- Division of Thoracic Surgery, Department of Surgery, Kaohsiung Veterans General Hospital, Kaohsiung 81362, Taiwan
- Department of Nursing, Meiho University, Pingtung 91202, Taiwan
| | - Wen-Tung Wu
- Department of Food Science and Nutrition, Meiho University, Pingtung 91202, Taiwan
| | - Chih-I Liu
- Department of Nursing, Meiho University, Pingtung 91202, Taiwan
| | - Choo-Aun Neoh
- Department of Research, Pingtung Christian Hospital, Pingtung 90059, Taiwan.
| | - Yu-Jen Wu
- Department of Nursing, Meiho University, Pingtung 91202, Taiwan.
- Department of Biological Technology, Meiho University, Pingtung 91202, Taiwan.
- Yu Jun Biotechnology Co., Ltd., Kaohsiung 81363, Taiwan.
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25
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Luangmonkong T, Suriguga S, Mutsaers HAM, Groothuis GMM, Olinga P, Boersema M. Targeting Oxidative Stress for the Treatment of Liver Fibrosis. Rev Physiol Biochem Pharmacol 2019; 175:71-102. [PMID: 29728869 DOI: 10.1007/112_2018_10] [Citation(s) in RCA: 156] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Oxidative stress is a reflection of the imbalance between the production of reactive oxygen species (ROS) and the scavenging capacity of the antioxidant system. Excessive ROS, generated from various endogenous oxidative biochemical enzymes, interferes with the normal function of liver-specific cells and presumably plays a role in the pathogenesis of liver fibrosis. Once exposed to harmful stimuli, Kupffer cells (KC) are the main effectors responsible for the generation of ROS, which consequently affect hepatic stellate cells (HSC) and hepatocytes. ROS-activated HSC undergo a phenotypic switch and deposit an excessive amount of extracellular matrix that alters the normal liver architecture and negatively affects liver function. Additionally, ROS stimulate necrosis and apoptosis of hepatocytes, which causes liver injury and leads to the progression of end-stage liver disease. In this review, we overview the role of ROS in liver fibrosis and discuss the promising therapeutic interventions related to oxidative stress. Most importantly, novel drugs that directly target the molecular pathways responsible for ROS generation, namely, mitochondrial dysfunction inhibitors, endoplasmic reticulum stress inhibitors, NADPH oxidase (NOX) inhibitors, and Toll-like receptor (TLR)-affecting agents, are reviewed in detail. In addition, challenges for targeting oxidative stress in the management of liver fibrosis are discussed.
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Affiliation(s)
- Theerut Luangmonkong
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, Groningen, The Netherlands.,Department of Pharmacology, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Su Suriguga
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, Groningen, The Netherlands
| | - Henricus A M Mutsaers
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, Groningen, The Netherlands.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Geny M M Groothuis
- Department of Pharmacokinetics, Toxicology and Targeting, University of Groningen, Groningen, The Netherlands
| | - Peter Olinga
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, Groningen, The Netherlands.
| | - Miriam Boersema
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, Groningen, The Netherlands
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26
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Xu S, Liu Y, Yang K, Wang H, Shergalis A, Kyani A, Bankhead A, Tamura S, Yang S, Wang X, Wang CC, Rehemtulla A, Ljungman M, Neamati N. Inhibition of protein disulfide isomerase in glioblastoma causes marked downregulation of DNA repair and DNA damage response genes. Theranostics 2019; 9:2282-2298. [PMID: 31149044 PMCID: PMC6531306 DOI: 10.7150/thno.30621] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 02/13/2019] [Indexed: 12/14/2022] Open
Abstract
Aberrant overexpression of endoplasmic reticulum (ER)-resident oxidoreductase protein disulfide isomerase (PDI) plays an important role in cancer progression. In this study, we demonstrate that PDI promotes glioblastoma (GBM) cell growth and describe a class of allosteric PDI inhibitors that are selective for PDI over other PDI family members. Methods: We performed a phenotypic screening triage campaign of over 20,000 diverse compounds to identify PDI inhibitors cytotoxic to cancer cells. From this screen, BAP2 emerged as a lead compound, and we assessed BAP2-PDI interactions with gel filtration, thiol-competition assays, and site-directed mutagenesis studies. To assess selectivity, we compared BAP2 activity across several PDI family members in the PDI reductase assay. Finally, we performed in vivo studies with a mouse xenograft model of GBM combining BAP2 and the standard of care (temozolomide and radiation), and identified affected gene pathways with nascent RNA sequencing (Bru-seq). Results: BAP2 and related analogs are novel PDI inhibitors that selectively inhibit PDIA1 and PDIp. Though BAP2 contains a weak Michael acceptor, interaction with PDI relies on Histidine 256 in the b' domain of PDI, suggesting allosteric binding. Furthermore, both in vitro and in vivo, BAP2 reduces cell and tumor growth. BAP2 alters the transcription of genes involved in the unfolded protein response, ER stress, apoptosis and DNA repair response. Conclusion: These results indicate that BAP2 has anti-tumor activity and the suppressive effect on DNA repair gene expression warrants combination with DNA damaging agents to treat GBM.
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Affiliation(s)
- Shili Xu
- Department of Medicinal Chemistry, College of Pharmacy, Rogel Cancer Center, University of Michigan, Ann Arbor, MI 48109, USA
| | - Yajing Liu
- Radiation Oncology, Rogel Cancer Center, Center for RNA, University of Michigan, Ann Arbor, MI 48109, USA
| | - Kai Yang
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 10049, China
| | - Hanxiao Wang
- Radiation Oncology, Rogel Cancer Center, Center for RNA, University of Michigan, Ann Arbor, MI 48109, USA
| | - Andrea Shergalis
- Department of Medicinal Chemistry, College of Pharmacy, Rogel Cancer Center, University of Michigan, Ann Arbor, MI 48109, USA
| | - Anahita Kyani
- Department of Medicinal Chemistry, College of Pharmacy, Rogel Cancer Center, University of Michigan, Ann Arbor, MI 48109, USA
| | - Armand Bankhead
- Department of Biostatistics, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Shuzo Tamura
- Department of Medicinal Chemistry, College of Pharmacy, Rogel Cancer Center, University of Michigan, Ann Arbor, MI 48109, USA
| | - Suhui Yang
- Department of Medicinal Chemistry, College of Pharmacy, Rogel Cancer Center, University of Michigan, Ann Arbor, MI 48109, USA
| | - Xi Wang
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 10049, China
| | - Chih-chen Wang
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 10049, China
| | - Alnawaz Rehemtulla
- Radiation Oncology, Rogel Cancer Center, Center for RNA, University of Michigan, Ann Arbor, MI 48109, USA
| | - Mats Ljungman
- Radiation Oncology, Rogel Cancer Center, Center for RNA, University of Michigan, Ann Arbor, MI 48109, USA
- Environmental Health Sciences, Rogel Cancer Center, University of Michigan, Ann Arbor, MI 48109, USA
| | - Nouri Neamati
- Department of Medicinal Chemistry, College of Pharmacy, Rogel Cancer Center, University of Michigan, Ann Arbor, MI 48109, USA
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27
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Takasugi N, Hiraoka H, Nakahara K, Akiyama S, Fujikawa K, Nomura R, Furuichi M, Uehara T. The Emerging Role of Electrophiles as a Key Regulator for Endoplasmic Reticulum (ER) Stress. Int J Mol Sci 2019; 20:E1783. [PMID: 30974903 PMCID: PMC6480251 DOI: 10.3390/ijms20071783] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 03/28/2019] [Accepted: 04/08/2019] [Indexed: 12/13/2022] Open
Abstract
The unfolded protein response (UPR) is activated by the accumulation of misfolded proteins in the endoplasmic reticulum (ER), which is called ER stress. ER stress sensors PERK, IRE1, and ATF6 play a central role in the initiation and regulation of the UPR; they inhibit novel protein synthesis and upregulate ER chaperones, such as protein disulfide isomerase, to remove unfolded proteins. However, when recovery from ER stress is difficult, the UPR pathway is activated to eliminate unhealthy cells. This signaling transition is the key event of many human diseases. However, the precise mechanisms are largely unknown. Intriguingly, reactive electrophilic species (RES), which exist in the environment or are produced through cellular metabolism, have been identified as a key player of this transition. In this review, we focused on the function of representative RES: nitric oxide (NO) as a gaseous RES, 4-hydroxynonenal (HNE) as a lipid RES, and methylmercury (MeHg) as an environmental organic compound RES, to outline the relationship between ER stress and RES. Modulation by RES might be a target for the development of next-generation therapy for ER stress-associated diseases.
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Affiliation(s)
- Nobumasa Takasugi
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan.
| | - Hideki Hiraoka
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan.
| | - Kengo Nakahara
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan.
| | - Shiori Akiyama
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan.
| | - Kana Fujikawa
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan.
| | - Ryosuke Nomura
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan.
| | - Moeka Furuichi
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan.
| | - Takashi Uehara
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan.
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28
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Fu Y, Sun S, Sun H, Peng J, Ma X, Bao L, Ji R, Luo C, Gao C, Zhang X, Jin Y. Scutellarin exerts protective effects against atherosclerosis in rats by regulating the Hippo-FOXO3A and PI3K/AKT signaling pathways. J Cell Physiol 2019; 234:18131-18145. [PMID: 30891776 DOI: 10.1002/jcp.28446] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 02/04/2019] [Accepted: 02/14/2019] [Indexed: 12/15/2022]
Abstract
Atherosclerosis (AS), a progressive disorder, is one of the tough challenges in the clinic. Scutellarin, an extract from Herba Erigerontis, is found to have oxygen-free radicals scavenging effects and antioxidant effects. In this study, we aimed to investigate the anti-AS effects of scutellarin is related to controlling the Hippo-FOXO3A and PI3K/AKT signal pathway. To establish an AS model, the rats in the scutellarin and model groups were intraperitoneally injected with vitamin D 3 and then fed a high-fat diet for 12 weeks. In addition, in vitro angiotensin II-induced apoptosis of human aortic endothelial cells (HAECs) were used to establish models. Scutellarin significantly reduced blood lipid levels and increased antioxidase levels in both models. Additionally, scutellarin inhibited reactive oxygen species generation and apoptosis in HAECs. The impaired vascular barrier function was restored by using scutellarin in AS rats and in HAECs cells characterized by inhibiting mammalian sterile-20-like kinases 1 (Mst1) phosphorylation, Yes-associated protein (YAP) phosphorylation, forkhead box O3A (FOXO3A) phosphorylation at serine 207, nuclear translocation of FOXO3A, and upregulating protein expression of AKT and FOXO3A phosphorylation at serine 253. Scutellarin significantly reduced Bcl-2 interacting mediator of cell death (Bim), caspase-3, APO-1, CD95 (Fas), and Bax: Bcl-2-associated X (Bax) levels and activated Bcl-2: B-cell lymphoma-2 (Bcl-2). Scutellarin also significantly inhibited the expression of Mst1, YAP, FOXO3A at the messenger RNA level. When Mst1 was overexpressed or phosphoinositide 3-kinases suppressed, the effects of scutellarin were significantly blocked. In conclusion, the results of the present study suggest that scutellarin exerts protective effects against AS by inhibiting endothelial cell injury and apoptosis by regulating the Hippo-FOXO3A and PI3K/AKT signal pathways.
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Affiliation(s)
- Yufeng Fu
- College of Pharmacy, Dalian Medical University, Dalian, China
| | - Shuangyong Sun
- Tianjin Institute of Pharmaceutical Research New Drug Evaluation Co Ltd, Tianjin, China
| | - Huijun Sun
- College of Pharmacy, Dalian Medical University, Dalian, China
| | - Jinyong Peng
- College of Pharmacy, Dalian Medical University, Dalian, China
| | - Xiaodong Ma
- College of Pharmacy, Dalian Medical University, Dalian, China
| | - Liuchi Bao
- College of Pharmacy, Dalian Medical University, Dalian, China
| | - Renpeng Ji
- College of Pharmacy, Dalian Medical University, Dalian, China
| | - Chunxu Luo
- College of Pharmacy, Dalian Medical University, Dalian, China
| | - Cong Gao
- College of Pharmacy, Dalian Medical University, Dalian, China
| | - Xiaoxue Zhang
- College of Pharmacy, Dalian Medical University, Dalian, China
| | - Yue Jin
- College of Pharmacy, Dalian Medical University, Dalian, China
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29
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Li J, Zhao Y, Zhou N, Li L, Li K. Dexmedetomidine Attenuates Myocardial Ischemia-Reperfusion Injury in Diabetes Mellitus by Inhibiting Endoplasmic Reticulum Stress. J Diabetes Res 2019; 2019:7869318. [PMID: 31886285 PMCID: PMC6914963 DOI: 10.1155/2019/7869318] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 09/24/2019] [Accepted: 10/25/2019] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVE With the increasing incidence of diabetes mellitus (DM) combined with myocardial ischemia, how to reduce myocardial ischemia-reperfusion injury in DM patients has become a major problem faced by clinicians. We investigated the therapeutic effects of dexmedetomidine (DEX) on myocardial ischemia-reperfusion injury in DM rats and its effect on endoplasmic reticulum stress. METHODS SD rats with SPF grade were randomly divided into 6 groups: non-DM rats were divided into the sham operation group (NDM-S group), ischemia-reperfusion group (NDM-IR group), and dexmedetomidine group (NDM-DEX group); DM rats were divided into the diabetic sham operation group (DM-S group), diabetes-reperfusion group (DM-IR group), and diabetes-dexmedetomidine (DM-DEX) group, with 10 rats in each group. Then the effects of DEX on the changes of CK-MB and cTnT levels were examined. The effects of myocardial pathological damage and myocardial infarct size were detected. The apoptosis of cardiomyocytes was detected. The apoptosis of heart tissue cells was also tested through the expressions of cleaved caspase-3, Bcl-2, and Bax proteins. The expression of endoplasmic reticulum stress-related proteins GRP78, CHOP, ERO1α, ERO1β, and PDI was examined. The hypoxia/reoxygenation (H/R) injury cell model was established, the effects of DEX, DEX+ ERS agonist on cell apoptosis was also detected. RESULTS The myocardial damage of DM-IR was more severe than that of NDM-IR rats. DEX could reduce the expression of CK-MB and cTnT, reduce pathological damage, and reduce scar formation and improve fibrosis. DEX can reduce the expression of GRP78, CHOP, ERO1α, ERO1β, and PDI proteins in vivo and in vitro. And the effect of DEX on cell apoptosis could be blocked by ERS agonist. CONCLUSION DEX attenuates myocardial ischemia-reperfusion injury in DM rats and H/R injury cell, which is associated with the reduction of ERS-induced cardiomyocyte apoptosis.
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MESH Headings
- Animals
- Apoptosis/drug effects
- Cell Line
- Creatine Kinase, MB Form/blood
- Dexmedetomidine/pharmacology
- Diabetes Mellitus, Experimental/complications
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/pathology
- Diabetes Mellitus, Type 2/complications
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/pathology
- Endoplasmic Reticulum Stress/drug effects
- Fibrosis
- Heat-Shock Proteins/metabolism
- Male
- Membrane Glycoproteins/metabolism
- Myocardial Infarction/metabolism
- Myocardial Infarction/pathology
- Myocardial Infarction/prevention & control
- Myocardial Reperfusion Injury/complications
- Myocardial Reperfusion Injury/metabolism
- Myocardial Reperfusion Injury/pathology
- Myocardial Reperfusion Injury/prevention & control
- Myocytes, Cardiac/drug effects
- Myocytes, Cardiac/metabolism
- Myocytes, Cardiac/pathology
- Protein Disulfide-Isomerases/metabolism
- Rats, Sprague-Dawley
- Signal Transduction
- Transcription Factor CHOP/metabolism
- Troponin T/blood
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Affiliation(s)
- Jinjie Li
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, No. 126, Xiantai Street, Changchun, Jilin 130033, China
| | - Ying Zhao
- Department of Nephrology, The First Hospital of Jilin University, No. 71, Xinmin Street, Changchun Jilin 130021, China
| | - Nan Zhou
- Department of Anesthesia, The General Hospital of Northern Theater Command, Shenyang 110016, China
| | - Longyun Li
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, No. 126, Xiantai Street, Changchun, Jilin 130033, China
| | - Kai Li
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, No. 126, Xiantai Street, Changchun, Jilin 130033, China
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30
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Testa G, Rossin D, Poli G, Biasi F, Leonarduzzi G. Implication of oxysterols in chronic inflammatory human diseases. Biochimie 2018; 153:220-231. [DOI: 10.1016/j.biochi.2018.06.006] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 06/07/2018] [Indexed: 12/18/2022]
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31
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Jung TW, Park HS, Choi GH, Kim D, Ahn SH, Kim DS, Lee T, Jeong JH. Maresin 1 attenuates pro-inflammatory reactions and ER stress in HUVECs via PPARα-mediated pathway. Mol Cell Biochem 2018; 448:335-347. [DOI: 10.1007/s11010-018-3392-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 06/26/2018] [Indexed: 12/11/2022]
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32
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Implications of plasma thiol redox in disease. Clin Sci (Lond) 2018; 132:1257-1280. [DOI: 10.1042/cs20180157] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 05/09/2018] [Accepted: 05/22/2018] [Indexed: 12/21/2022]
Abstract
Thiol groups are crucially involved in signaling/homeostasis through oxidation, reduction, and disulphide exchange. The overall thiol pool is the resultant of several individual pools of small compounds (e.g. cysteine), peptides (e.g. glutathione), and thiol proteins (e.g. thioredoxin (Trx)), which are not in equilibrium and present specific oxidized/reduced ratios. This review addresses mechanisms and implications of circulating plasma thiol/disulphide redox pools, which are involved in several physiologic processes and explored as disease biomarkers. Thiol pools are regulated by mechanisms linked to their intrinsic reactivity against oxidants, concentration of antioxidants, thiol-disulphide exchange rates, and their dynamic release/removal from plasma. Major thiol couples determining plasma redox potential (Eh) are reduced cysteine (CyS)/cystine (the disulphide form of cysteine) (CySS), followed by GSH/disulphide-oxidized glutathione (GSSG). Hydrogen peroxide and hypohalous acids are the main plasma oxidants, while water-soluble and lipid-soluble small molecules are the main antioxidants. The thiol proteome and thiol-oxidoreductases are emerging investigative areas given their specific disease-related responses (e.g. protein disulphide isomerases (PDIs) in thrombosis). Plasma cysteine and glutathione redox couples exhibit pro-oxidant changes directly correlated with ageing/age-related diseases. We further discuss changes in thiol-disulphide redox state in specific groups of diseases: cardiovascular, cancer, and neurodegenerative. These results indicate association with the disease states, although not yet clear-cut to yield specific biomarkers. We also highlight mechanisms whereby thiol pools affect atherosclerosis pathophysiology. Overall, it is unlikely that a single measurement provides global assessment of plasma oxidative stress. Rather, assessment of individual thiol pools and thiol-proteins specific to any given condition has more solid and logical perspective to yield novel relevant information on disease risk and prognosis.
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The Effect of Bornyl cis-4-Hydroxycinnamate on Melanoma Cell Apoptosis Is Associated with Mitochondrial Dysfunction and Endoplasmic Reticulum Stress. Int J Mol Sci 2018; 19:ijms19051370. [PMID: 29734677 PMCID: PMC5983650 DOI: 10.3390/ijms19051370] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 04/22/2018] [Accepted: 04/28/2018] [Indexed: 01/01/2023] Open
Abstract
Bornyl cis-4-hydroxycinnamate, an active compound isolated from Piper betle stems, was investigated in terms of its effects on A2058 and A375 melanoma cell proliferation and protein expression in this study. We used flow cytometric analysis to examine the early stages of apoptosis induced by bornyl cis-4-hydroxycinnamate in the two melanoma cell lines and employed comparative proteomic analysis to investigate the effects of this compound on protein expression in A375 cells. Master maps generated by PDQuest software from two-dimensional electrophoresis (2-DE) analysis of A375 cells showed that the expression levels of 35 proteins were significantly altered, with 18 proteins upregulated and 17 downregulated. The proteomics study identified several proteins that are involved in mitochondrial dysfunction and endoplasmic reticulum stress (ER stress), in addition to apoptosis-associated proteins, including prohibitin, hypoxia-upregulated protein 1, stress 70 protein, 78 kDa glucose-regulated protein (GRP78), and protein deglycase DJ-1 (protein DJ-1) in melanoma cells exposed to bornyl cis-4-hydroxycinnamate. The treatment also resulted in a marked decline of the mitochondrial membrane potential, in cytochrome C release into the cytosol, in the activation of Bcl-2-associated X protein (Bax), Bcl-2-associated death promoter protein (Bad), caspase-3, and caspase-9, and in the decreased expression of p-Bad, B-cell lymphoma 2 (Bcl-2), Bcl-xl, and induced myeloid leukemia cell differentiation protein-1 (Mcl-1), indicating that apoptosis induced by bornyl cis-4-hydroxycinnamate was mediated by the mitochondria through the caspase-dependent pathway. Also, salubrinal (an eukaryotic initiation factor 2α inhibitor; eIF2α inhibitor) was able to protect the cells from bornyl cis-4-hydroxycinnamate-induced apoptosis. Bornyl cis-4-hydroxycinnamate-related cell death also implied that the protein kinase R-like endoplasmic reticulum kinase (PERK)–eIF2α–ATF4–CHOP signal pathways was activated upon bornyl cis-4-hydroxycinnamate treatment. Altogether, our results support the conclusion that bornyl cis-4-hydroxycinnamate-induced apoptosis in melanoma cells is associated with mechanisms correlated with the activation of caspase cascades, mitochondrial dysfunction, and endoplasmic reticulum stress, and indicate that this molecule has the potential to be developed as a chemotherapeutic agent for human melanoma.
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Du J, Guo S, Sun J, Shu S. Proteomic and physiological analyses reveal the role of exogenous spermidine on cucumber roots in response to Ca(NO 3) 2 stress. PLANT MOLECULAR BIOLOGY 2018; 97:1-21. [PMID: 29633167 DOI: 10.1007/s11103-018-0721-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 03/20/2018] [Indexed: 05/14/2023]
Abstract
The mechanism of exogenous Spd-induced Ca(NO3)2 stress tolerance in cucumber was studied by proteomics and physiological analyses. Protein-protein interaction network revealed 13 key proteins involved in Spd-induced Ca(NO3)2 stress resistance. Ca(NO3)2 stress is one of the major reasons for secondary salinization that limits cucumber plant development in greenhouse. The conferred protective role of exogenous Spd on cucumber in response to Ca(NO3)2 stress cues involves changes at the cellular and physiological levels. To investigate the molecular foundation of exogenous Spd in Ca(NO3)2 stress tolerance, a proteomic approach was performed in our work. After a 9 days period of Ca(NO3)2 stress and/or exogenous Spd, 71 differential protein spots were confidently identified. The resulting proteins were enriched in seven different categories of biological processes, including protein metabolism, carbohydrate and energy metabolism, ROS homeostasis and stress defense, cell wall related, transcription, others and unknown. Protein metabolism (31.2%), carbohydrate and energy metabolism (15.6%), ROS homeostasis and stress defense (32.5%) were the three largest functional categories in cucumber root and most of them were significantly increased by exogenous Spd. The Spd-responsive protein interaction network revealed 13 key proteins, whose accumulation changes could be critical for Spd-induced resistance; all 13 proteins were upregulated by Spd at transcriptional and protein levels in response to Ca(NO3)2 stress. Furthermore, accumulation of antioxidant enzymes, non-enzymatic antioxidant and polyamines, along with reduction of H2O2 and MDA, were detected after exogenous Spd application during Ca(NO3)2 stress. The results of these proteomic and physiological analyses in cucumber root may facilitate a better understanding of the underlying mechanism of Ca(NO3)2 stress tolerance mediated by exogenous Spd.
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Affiliation(s)
- Jing Du
- Key Laboratory of Southern Vegetable Crop Genetic Improvement, Ministry of Agriculture, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
- Taizhou Research Institute, Jiangsu Academy Agricultural Sciences, Taizhou, 225300, People's Republic of China
| | - Shirong Guo
- Key Laboratory of Southern Vegetable Crop Genetic Improvement, Ministry of Agriculture, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
| | - Jin Sun
- Key Laboratory of Southern Vegetable Crop Genetic Improvement, Ministry of Agriculture, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Sheng Shu
- Key Laboratory of Southern Vegetable Crop Genetic Improvement, Ministry of Agriculture, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
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Peixoto ÁS, Geyer RR, Iqbal A, Truzzi DR, Soares Moretti AI, Laurindo FRM, Augusto O. Peroxynitrite preferentially oxidizes the dithiol redox motifs of protein-disulfide isomerase. J Biol Chem 2018; 293:1450-1465. [PMID: 29191937 PMCID: PMC5787819 DOI: 10.1074/jbc.m117.807016] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Revised: 11/29/2017] [Indexed: 12/22/2022] Open
Abstract
Protein-disulfide isomerase (PDI) is a ubiquitous dithiol-disulfide oxidoreductase that performs an array of cellular functions, such as cellular signaling and responses to cell-damaging events. PDI can become dysfunctional by post-translational modifications, including those promoted by biological oxidants, and its dysfunction has been associated with several diseases in which oxidative stress plays a role. Because the kinetics and products of the reaction of these oxidants with PDI remain incompletely characterized, we investigated the reaction of PDI with the biological oxidant peroxynitrite. First, by determining the rate constant of the oxidation of PDI's redox-active Cys residues (Cys53 and Cys397) by hydrogen peroxide (k = 17.3 ± 1.3 m-1 s-1 at pH 7.4 and 25 °C), we established that the measured decay of the intrinsic PDI fluorescence is appropriate for kinetic studies. The reaction of these PDI residues with peroxynitrite was considerably faster (k = (6.9 ± 0.2) × 104 m-1 s-1), and both Cys residues were kinetically indistinguishable. Limited proteolysis, kinetic simulations, and MS analyses confirmed that peroxynitrite preferentially oxidizes the redox-active Cys residues of PDI to the corresponding sulfenic acids, which reacted with the resolving thiols at the active sites to produce disulfides (i.e. Cys53-Cys56 and Cys397-Cys400). A fraction of peroxynitrite, however, decayed to radicals that hydroxylated and nitrated other active-site residues (Trp52, Trp396, and Tyr393). Excess peroxynitrite promoted further PDI oxidation, nitration, inactivation, and covalent oligomerization. We conclude that these PDI modifications may contribute to the pathogenic mechanism of several diseases associated with dysfunctional PDI.
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Affiliation(s)
- Álbert Souza Peixoto
- From the Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, CEP 05508-000, Brazil and
| | - R Ryan Geyer
- From the Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, CEP 05508-000, Brazil and
| | - Asif Iqbal
- From the Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, CEP 05508-000, Brazil and
| | - Daniela R Truzzi
- From the Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, CEP 05508-000, Brazil and
| | - Ana I Soares Moretti
- Vascular Biology Laboratory, Heart Institute (InCor), School of Medicine, University of São Paulo, São Paulo, CEP 05403-000, Brazil
| | - Francisco R M Laurindo
- Vascular Biology Laboratory, Heart Institute (InCor), School of Medicine, University of São Paulo, São Paulo, CEP 05403-000, Brazil
| | - Ohara Augusto
- From the Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, CEP 05508-000, Brazil and
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Manuel AM, Walla MD, Faccenda A, Martin SL, Tanis RM, Piroli GG, Adam J, Kantor B, Mutus B, Townsend DM, Frizzell N. Succination of Protein Disulfide Isomerase Links Mitochondrial Stress and Endoplasmic Reticulum Stress in the Adipocyte During Diabetes. Antioxid Redox Signal 2017; 27:1281-1296. [PMID: 28376661 PMCID: PMC5655420 DOI: 10.1089/ars.2016.6853] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
AIMS Protein succination by fumarate increases in the adipose tissue of diabetic mice and in adipocytes matured in high glucose as a result of glucotoxicity-driven mitochondrial stress. The endoplasmic reticulum (ER) oxidoreductase protein disulfide isomerase (PDI) is succinated in adipocytes that are matured in high glucose, and in this study we investigated whether succination would alter PDI oxidoreductase activity, directly linking mitochondrial stress and ER stress. RESULTS Protein succination and the ER stress marker C/EBP homologous protein (CHOP) were diminished after pharmaceutical targeting of mitochondrial stress with the chemical uncoupler niclosamide in adipocytes matured in high-glucose concentrations. PDI was succinated by fumarate on both CXXC-containing active sites, contributing to reduced enzymatic activity. Succinated PDI decreased reductase activity in adipocytes matured in high glucose, and in db/db epididymal adipose tissue, in association with increased levels of CHOP. PDI succination was increased in fumarase knockdown adipocytes, leading to reduced PDI oxidoreductase activity, increased CHOP levels, and pro-inflammatory cytokine secretion, confirming the specific role of elevated fumarate levels in contributing to ER stress. In addition, PDI succination and ER stress were decreased, and PDI reductase activity was restored when exposure to chronic high glucose was limited, highlighting the importance of calorie restriction in the improvement of adipocyte metabolic function. INNOVATION These experiments identify PDI succination as a novel biochemical mechanism linking altered mitochondrial metabolism to ER stress in the adipocyte during diabetes. CONCLUSION The current study demonstrates that early biochemical changes in mitochondrial metabolism have important implications for the development of adipocyte stress. Antioxid. Redox Signal. 27, 1281-1296.
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Affiliation(s)
- Allison M Manuel
- 1 Department of Pharmacology, Physiology and Neuroscience, School of Medicine, University of South Carolina , Columbia, South Carolina
| | - Michael D Walla
- 2 Mass Spectrometry Center, Department of Chemistry and Biochemistry, University of South Carolina , Columbia, South Carolina
| | - Adam Faccenda
- 3 Department of Chemistry and Biochemistry, University of Windsor , Windsor, Canada
| | - Stephanie L Martin
- 1 Department of Pharmacology, Physiology and Neuroscience, School of Medicine, University of South Carolina , Columbia, South Carolina
| | - Ross M Tanis
- 1 Department of Pharmacology, Physiology and Neuroscience, School of Medicine, University of South Carolina , Columbia, South Carolina
| | - Gerardo G Piroli
- 1 Department of Pharmacology, Physiology and Neuroscience, School of Medicine, University of South Carolina , Columbia, South Carolina
| | - Julie Adam
- 4 Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford , Oxford, United Kingdom
| | - Boris Kantor
- 5 Viral Vector Core, Department of Pharmacology, Physiology and Neuroscience, School of Medicine, University of South Carolina , Columbia, South Carolina
| | - Bulent Mutus
- 3 Department of Chemistry and Biochemistry, University of Windsor , Windsor, Canada
| | - Danyelle M Townsend
- 6 Department of Pharmaceutical and Biomedical Sciences, Medical University of South Carolina , Charleston, South Carolina
| | - Norma Frizzell
- 1 Department of Pharmacology, Physiology and Neuroscience, School of Medicine, University of South Carolina , Columbia, South Carolina
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Nègre-Salvayre A, Garoby-Salom S, Swiader A, Rouahi M, Pucelle M, Salvayre R. Proatherogenic effects of 4-hydroxynonenal. Free Radic Biol Med 2017; 111:127-139. [PMID: 28040472 DOI: 10.1016/j.freeradbiomed.2016.12.038] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 12/22/2016] [Accepted: 12/24/2016] [Indexed: 01/08/2023]
Abstract
4-hydroxy-2-nonenal (HNE) is a α,β-unsaturated hydroxyalkenal generated by peroxidation of n-6 polyunsaturated fatty acid. This reactive carbonyl compound exhibits a huge number of biological properties that result mainly from the formation of HNE-adducts on free amino groups and thiol groups in proteins. In the vascular system, HNE adduct accumulation progressively leads to cellular dysfunction and tissue damages that are involved in the progression of atherosclerosis and related diseases. HNE contributes to the atherogenicity of oxidized LDL, by forming HNE-apoB adducts that deviate the LDL metabolism to the scavenger receptor pathway of macrophagic cells, and lead to the formation of foam cells. HNE activates transcription factors (Nrf2, NF-kappaB) that (dys)regulate various cellular responses ranging from hormetic and survival signaling at very low concentrations, to inflammatory and apoptotic effects at higher concentrations. Among a variety of cellular targets, HNE can modify signaling proteins involved in atherosclerotic plaque remodeling, particularly growth factor receptors (PDGFR, EGFR), cell cycle proteins, mitochondrial and endoplasmic reticulum components or extracellular matrix proteins, which progressively alters smooth muscle cell proliferation, angiogenesis and induces apoptosis. HNE adducts accumulate in the lipidic necrotic core of advanced atherosclerotic lesions, and may locally contribute to macrophage and smooth muscle cell apoptosis, which may induce plaque destabilization and rupture, thereby increasing the risk of athero-thrombotic events.
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Affiliation(s)
| | | | | | | | | | - Robert Salvayre
- Inserm UMR-1048, France; University of Toulouse, Faculty of Medicine, Biochemistry Dept, Toulouse, France; CHU Toulouse, Rangueil, Toulouse, France
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Mol M, Regazzoni L, Altomare A, Degani G, Carini M, Vistoli G, Aldini G. Enzymatic and non-enzymatic detoxification of 4-hydroxynonenal: Methodological aspects and biological consequences. Free Radic Biol Med 2017; 111:328-344. [PMID: 28161307 DOI: 10.1016/j.freeradbiomed.2017.01.036] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 01/26/2017] [Accepted: 01/26/2017] [Indexed: 10/20/2022]
Abstract
4-Hydroxynonenal (HNE), an electrophilic end-product deriving from lipid peroxidation, undergoes a heterogeneous set of biotransformations including enzymatic and non-enzymatic reactions. The former mostly involve red-ox reactions on the HNE oxygenated functions (phase I metabolism) and GSH conjugations (phase II) while the latter are due to the HNE capacity to spontaneously condense with nucleophilic sites within endogenous molecules such as proteins, nucleic acids and phospholipids. The overall metabolic fate of HNE has recently attracted great interest not only because it clearly determines the HNE disposal, but especially because the generated metabolites and adducts are not inactive molecules (as initially believed) but show biological activities even more pronounced than those of the parent compound as exemplified by potent pro-inflammatory stimulus induced by GSH conjugates. Similarly, several studies revealed that the non-enzymatic reactions, initially considered as damaging processes randomly involving all endogenous nucleophilic reactants, are in fact quite selective in terms of both reactivity of the nucleophilic sites and stability of the generated adducts. Even though many formed adducts retain the expected toxic consequences, some adducts exhibit well-defined beneficial roles as documented by the protective effects of sublethal concentrations of HNE against toxic concentrations of HNE. Clearly, future investigations are required to gain a more detailed understanding of the metabolic fate of HNE as well as to identify novel targets involved in the biological activity of the HNE metabolites. These studies are and will be permitted by the continuous progress in the analytical methods for the identification and quantitation of novel HNE metabolites as well as for proteomic analyses able to offer a comprehensive picture of the HNE-induced adducted targets. On these grounds, the present review will focus on the major enzymatic and non-enzymatic HNE biotransformations discussing both the molecular mechanisms involved and the biological effects elicited. The review will also describe the most important analytical enhancements that have permitted the here discussed advancements in our understanding of the HNE metabolic fate and which will permit in a near future an even better knowledge of this enigmatic molecule.
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Affiliation(s)
- Marco Mol
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milan, Italy
| | - Luca Regazzoni
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milan, Italy
| | - Alessandra Altomare
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milan, Italy
| | - Genny Degani
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milan, Italy
| | - Marina Carini
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milan, Italy
| | - Giulio Vistoli
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milan, Italy
| | - Giancarlo Aldini
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milan, Italy.
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Gargiulo S, Testa G, Gamba P, Staurenghi E, Poli G, Leonarduzzi G. Oxysterols and 4-hydroxy-2-nonenal contribute to atherosclerotic plaque destabilization. Free Radic Biol Med 2017; 111:140-150. [PMID: 28057601 DOI: 10.1016/j.freeradbiomed.2016.12.037] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 12/22/2016] [Accepted: 12/24/2016] [Indexed: 12/31/2022]
Abstract
A growing bulk of evidence suggests that cholesterol oxidation products, known as oxysterols, and 4-hydroxy-2-nonenal (HNE), the major proatherogenic components of oxidized low density lipoproteins (oxLDLs), significantly contribute to atherosclerotic plaque progression and destabilization, with eventual plaque rupture. These oxidized lipids are involved in various key steps of this complex process, mainly thanks to their ability to induce inflammation, oxidative stress, and apoptosis. This review summarizes the current knowledge of the effects induced by these compounds on vascular cells, after their accumulation in the arterial wall and in the atherosclerotic plaque.
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Affiliation(s)
- Simona Gargiulo
- Department of Clinical and Biological Sciences, University of Torino, San Luigi Hospital, 10043 Orbassano, Torino, Italy
| | - Gabriella Testa
- Department of Clinical and Biological Sciences, University of Torino, San Luigi Hospital, 10043 Orbassano, Torino, Italy
| | - Paola Gamba
- Department of Clinical and Biological Sciences, University of Torino, San Luigi Hospital, 10043 Orbassano, Torino, Italy
| | - Erica Staurenghi
- Department of Clinical and Biological Sciences, University of Torino, San Luigi Hospital, 10043 Orbassano, Torino, Italy
| | - Giuseppe Poli
- Department of Clinical and Biological Sciences, University of Torino, San Luigi Hospital, 10043 Orbassano, Torino, Italy
| | - Gabriella Leonarduzzi
- Department of Clinical and Biological Sciences, University of Torino, San Luigi Hospital, 10043 Orbassano, Torino, Italy.
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Nègre-Salvayre A, Augé N, Camaré C, Bacchetti T, Ferretti G, Salvayre R. Dual signaling evoked by oxidized LDLs in vascular cells. Free Radic Biol Med 2017; 106:118-133. [PMID: 28189852 DOI: 10.1016/j.freeradbiomed.2017.02.006] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Revised: 01/30/2017] [Accepted: 02/02/2017] [Indexed: 12/12/2022]
Abstract
The oxidative theory of atherosclerosis relies on the modification of low density lipoproteins (LDLs) in the vascular wall by reactive oxygen species. Modified LDLs, such as oxidized LDLs, are thought to participate in the formation of early atherosclerotic lesions (accumulation of foam cells and fatty streaks), whereas their role in advanced lesions and atherothrombotic events is more debated, because antioxidant supplementation failed to prevent coronary disease events and mortality in intervention randomized trials. As oxidized LDLs and oxidized lipids are present in atherosclerotic lesions and are able to trigger cell signaling on cultured vascular cells and macrophages, it has been proposed that they could play a role in atherogenesis and atherosclerotic vascular remodeling. Oxidized LDLs exhibit dual biological effects, which are dependent on extent of lipid peroxidation, nature of oxidized lipids (oxidized phospholipids, oxysterols, malondialdehyde, α,β-unsaturated hydroxyalkenals), concentration of oxidized LDLs and uptake by scavenger receptors (e.g. CD36, LOX-1, SRA) that signal through different transduction pathways. Moderate concentrations of mildly oxidized LDLs are proinflammatory and trigger cell migration and proliferation, whereas higher concentrations induce cell growth arrest and apoptosis. The balance between survival and apoptotic responses evoked by oxidized LDLs depends on cellular systems that regulate the cell fate, such as ceramide/sphingosine-1-phosphate rheostat, endoplasmic reticulum stress, autophagy and expression of pro/antiapoptotic proteins. In vivo, the intimal concentration of oxidized LDLs depends on the influx (hypercholesterolemia, endothelial permeability), residence time and lipid composition of LDLs, oxidative stress intensity, induction of defense mechanisms (antioxidant systems, heat shock proteins). As a consequence, the local cellular responses to oxidized LDLs may stimulate inflammatory or anti-inflammatory pathways, angiogenic or antiangiogenic responses, survival or apoptosis, thereby contributing to plaque growth, instability, complication (intraplaque hemorrhage, proteolysis, calcification, apoptosis) and rupture. Finally, these dual properties suggest that oxLDLs could be implicated at each step of atherosclerosis development, from early fatty streaks to advanced lesions, depending on the nature and concentration of their oxidized lipid content.
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Affiliation(s)
| | | | - Caroline Camaré
- Inserm UMR-1048, France; University of Toulouse, Faculty of Medicine, Biochemistry Dept, Toulouse, France; CHU Toulouse, Rangueil, Toulouse, France
| | | | | | - Robert Salvayre
- Inserm UMR-1048, France; University of Toulouse, Faculty of Medicine, Biochemistry Dept, Toulouse, France; CHU Toulouse, Rangueil, Toulouse, France.
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Fernández-Cisnal R, García-Sevillano MA, Gómez-Ariza JL, Pueyo C, López-Barea J, Abril N. 2D-DIGE as a proteomic biomarker discovery tool in environmental studies with Procambarus clarkii. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 584-585:813-827. [PMID: 28159302 DOI: 10.1016/j.scitotenv.2017.01.125] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 01/17/2017] [Accepted: 01/18/2017] [Indexed: 06/06/2023]
Abstract
UNLABELLED A 2D-DIGE/MS approach was used to assess protein abundance differences in the red swamp crayfish Procambarus clarkii from polluted aquatic ecosystems of Doñana National Park and surrounding areas with different pollution loads. Procambarus clarkii accumulated metals in the digestive glands and gills reflecting sediment concentrations. We first stated that, probably related to elements accumulation, pollution increased oxidative damage in P. clarkii tissues, as shown by the thiol oxidation status of proteins and MDA levels. In these animals, the altered redox status might be responsible for the deregulated abundance of proteins involved in cellular responses to oxidative stress including protein folding, mitochondrial imbalance and inflammatory processes. Interestingly, polluted P. clarkii crayfish also displayed a metabolic shift to enhanced aerobic glycolysis, most likely aimed at generating ATP and reduction equivalents in an oxidative stress situation that alters mitochondrial integrity. The deregulated proteins define the physiological processes affected by pollutants in DNP and its surrounding areas and may help us to unravel the molecular mechanisms underlying the toxicity of environmental pollutants. In addition, these proteins might be used as exposure biomarkers in environmental risk assessment. The results obtained might be extrapolated to many other locations all over the world and have the added value of providing information about the molecular responses of this environmentally and economically interesting animal. SIGNIFICANCE Metal content in digestive gland and gills of P. clarkii crayfish reflects their contents in sediments at sites of Doñana National Park and its surroundings. Accumulation of essential and toxic transition metals is paralleled by clear signs of oxidative stress to lipids and proteins and by significant deregulation of many proteins involved in protein folding, mitochondrial respiratory imbalance and inflammatory response. These results indicate that P. clarkii is an excellent bioindicator to be used in aquatic ecosystems quality monitoring. Additionally, results evidence that the anthropogenic activities carried out around Doñana National Park represent an extremely serious threat to this unique Biosphere Reserve and pose a risk to the environment and their inhabitants health. The identified deregulated proteins provide information about the metabolic pathways and/or physiological processes affected by pollutant-elicited oxidative stress, may also be useful as biomarkers of environmental pollution and have the added value of providing information about the molecular responses of this environmentally and economically interesting animal.
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Affiliation(s)
- Ricardo Fernández-Cisnal
- Department of Biochemistry and Molecular Biology and Agrifood Campus of International Excellence (ceiA3), University of Córdoba, Severo Ochoa Building, Rabanales Campus, 14071 Córdoba, Spain
| | - Miguel A García-Sevillano
- Department of Chemistry and Materials Science, Faculty of Experimental Science and Agrifood Campus of International Excellence (ceiA3), University of Huelva, El Carmen Campus, 21007 Huelva, Spain
| | - José L Gómez-Ariza
- Department of Chemistry and Materials Science, Faculty of Experimental Science and Agrifood Campus of International Excellence (ceiA3), University of Huelva, El Carmen Campus, 21007 Huelva, Spain
| | - Carmen Pueyo
- Department of Biochemistry and Molecular Biology and Agrifood Campus of International Excellence (ceiA3), University of Córdoba, Severo Ochoa Building, Rabanales Campus, 14071 Córdoba, Spain
| | - Juan López-Barea
- Department of Biochemistry and Molecular Biology and Agrifood Campus of International Excellence (ceiA3), University of Córdoba, Severo Ochoa Building, Rabanales Campus, 14071 Córdoba, Spain
| | - Nieves Abril
- Department of Biochemistry and Molecular Biology and Agrifood Campus of International Excellence (ceiA3), University of Córdoba, Severo Ochoa Building, Rabanales Campus, 14071 Córdoba, Spain..
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Ward LJ, Ljunggren SA, Karlsson H, Li W, Yuan XM. Exposure to atheroma-relevant 7-oxysterols causes proteomic alterations in cell death, cellular longevity, and lipid metabolism in THP-1 macrophages. PLoS One 2017; 12:e0174475. [PMID: 28350877 PMCID: PMC5370125 DOI: 10.1371/journal.pone.0174475] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 03/09/2017] [Indexed: 12/30/2022] Open
Abstract
The 7-oxysterols are recognised as strong enhancers of inflammatory processes in foamy macrophages. Atheroma-relevant 7-oxysterol mixtures induce a mixed type of cell death in macrophages, and trigger cellular oxidative stress responses, which mimic oxidative exposures observed in atherosclerotic lesions. However, the macrophage proteome has not previously been determined in the 7-oxysterol treated cell model. The aim of the present study was to determine the specific effects of an atheroma-relevant 7-oxysterol mixture on human macrophage proteome. Human THP-1 macrophages were exposed to an atheroma-relevant mixture of 7β-hydroxycholesterol and 7-ketocholesterol. Two-dimensional gel electrophoresis and mass spectrometry techniques were used to analyse the alterations in macrophage proteome, which resulted in the identification of 19 proteins with significant differential expression upon oxysterol loading; 8 increased and 11 decreased. The expression patterns of 11 out of 19 identified significant proteins were further confirmed by tandem-mass spectrometry, including further validation of increased histone deacetylase 2 and macrophage scavenger receptor types I and II expressions by western blot analysis. Identified proteins with differential expression in the cell model have been associated with i) signalling imbalance in cell death and cellular longevity; ii) lipid uptake and metabolism in foam cells; and iii) inflammatory proteins. The presented findings highlight a new proteomic platform for further studies into the functional roles of macrophages in atherosclerosis, and present a cell model for future studies to modulate the macrophage proteome by potential anti-atherosclerotic agents.
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Affiliation(s)
- Liam J. Ward
- Occupational and Environmental Medicine Center, and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
- Division of Obstetrics and Gynaecology, and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
- * E-mail: (LJW); (X-MY)
| | - Stefan A. Ljunggren
- Occupational and Environmental Medicine Center, and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Helen Karlsson
- Occupational and Environmental Medicine Center, and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Wei Li
- Division of Obstetrics and Gynaecology, and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Xi-Ming Yuan
- Occupational and Environmental Medicine Center, and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
- * E-mail: (LJW); (X-MY)
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Battson ML, Lee DM, Gentile CL. Endoplasmic reticulum stress and the development of endothelial dysfunction. Am J Physiol Heart Circ Physiol 2017; 312:H355-H367. [DOI: 10.1152/ajpheart.00437.2016] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 11/28/2016] [Accepted: 11/28/2016] [Indexed: 12/14/2022]
Abstract
The vascular endothelium plays a critical role in cardiovascular homeostasis, and thus identifying the underlying causes of endothelial dysfunction has important clinical implications. In this regard, the endoplasmic reticulum (ER) has recently emerged as an important regulator of metabolic processes. Dysfunction within the ER, broadly termed ER stress, evokes the unfolded protein response (UPR), an adaptive pathway that aims to restore ER homeostasis. Although the UPR is the first line of defense against ER stress, chronic activation of the UPR leads to cell dysfunction and death and has recently been implicated in the pathogenesis of endothelial dysfunction. Numerous risk factors for endothelial dysfunction can induce ER stress, which may in turn disrupt endothelial function via direct effects on endothelium-derived vasoactive substances or by activating other pathogenic cellular networks such as inflammation and oxidative stress. This review summarizes the available data linking ER stress to endothelial dysfunction.
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Affiliation(s)
- M. L. Battson
- Department of Food Science and Human Nutrition, Colorado State University, Fort Collins, Colorado
| | - D. M. Lee
- Department of Food Science and Human Nutrition, Colorado State University, Fort Collins, Colorado
| | - C. L. Gentile
- Department of Food Science and Human Nutrition, Colorado State University, Fort Collins, Colorado
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Short JD, Downs K, Tavakoli S, Asmis R. Protein Thiol Redox Signaling in Monocytes and Macrophages. Antioxid Redox Signal 2016; 25:816-835. [PMID: 27288099 PMCID: PMC5107717 DOI: 10.1089/ars.2016.6697] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
SIGNIFICANCE Monocyte and macrophage dysfunction plays a critical role in a wide range of inflammatory disease processes, including obesity, impaired wound healing diabetic complications, and atherosclerosis. Emerging evidence suggests that the earliest events in monocyte or macrophage dysregulation include elevated reactive oxygen species production, thiol modifications, and disruption of redox-sensitive signaling pathways. This review focuses on the current state of research in thiol redox signaling in monocytes and macrophages, including (i) the molecular mechanisms by which reversible protein-S-glutathionylation occurs, (ii) the identification of bona fide S-glutathionylated proteins that occur under physiological conditions, and (iii) how disruptions of thiol redox signaling affect monocyte and macrophage functions and contribute to atherosclerosis. Recent Advances: Recent advances in redox biochemistry and biology as well as redox proteomic techniques have led to the identification of many new thiol redox-regulated proteins and pathways. In addition, major advances have been made in expanding the list of S-glutathionylated proteins and assessing the role that protein-S-glutathionylation and S-glutathionylation-regulating enzymes play in monocyte and macrophage functions, including monocyte transmigration, macrophage polarization, foam cell formation, and macrophage cell death. CRITICAL ISSUES Protein-S-glutathionylation/deglutathionylation in monocytes and macrophages has emerged as a new and important signaling paradigm, which provides a molecular basis for the well-established relationship between metabolic disorders, oxidative stress, and cardiovascular diseases. FUTURE DIRECTIONS The identification of specific S-glutathionylated proteins as well as the mechanisms that control this post-translational protein modification in monocytes and macrophages will facilitate the development of new preventive and therapeutic strategies to combat atherosclerosis and other metabolic diseases. Antioxid. Redox Signal. 25, 816-835.
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Affiliation(s)
- John D Short
- 1 Department of Pharmacology, University of Texas Health Science Center at San Antonio , San Antonio, Texas
| | - Kevin Downs
- 2 Department of Cellular and Structural Biology, University of Texas Health Science Center at San Antonio , San Antonio, Texas
| | - Sina Tavakoli
- 3 Department of Radiology, University of Texas Health Science Center at San Antonio , San Antonio, Texas
| | - Reto Asmis
- 4 Department of Clinical Laboratory Sciences, University of Texas Health Science Center at San Antonio , San Antonio, Texas.,5 Department of Biochemistry, University of Texas Health Science Center at San Antonio , San Antonio, Texas
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45
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Chen W, Liu J, Zhao L, Wang C, Li Z, Liu T. Elevated Levels of Protein Disulfide Isomerase and Binding Immunoglobulin Protein Implicated in Spinal Cord Injury Paraplegia Patients with Pressure Ulcers. Genet Test Mol Biomarkers 2016; 20:367-72. [PMID: 27227456 DOI: 10.1089/gtmb.2015.0309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
AIMS To explore the associations between two endoplasmic reticulum (ER) stress proteins, protein disulfide isomerase (PDI), binding immunoglobulin protein (BIP), and the development and progression of pressure ulcers (PUs) in spinal cord injury (SCI) paraplegia patients. METHODS ELISA kits were used to measure the levels of serum PDI and BIP in 67 SCI paraplegia patients with PUs and 61 SCI paraplegia patients without PUs. The associations between PDI and BIP, PU formation, PU staging, and pressure ulcer scale for healing (PUSH) score were analyzed. RESULTS The patients in the PU group had higher levels of PDI and BIP than those in the non-PU group (both p < 0.05). Furthermore, the levels of PDI were positively correlated with those of BIP (r = 0.707, p < 0.0001). There were significant differences in the PDI and BIP levels among the different stages of PU (all p < 0.05). As the PU stages progressed, the levels of PDI and BIP first increased, then decreased, and finally peaked at stage III of the PUs. The PUSH scores significantly declined 7 days after debridement for the PU stage II (p < 0.01) but showed no significant difference between stages III and IV at 7 days after debridement (p > 0.05). The PUSH scores also decreased at 28 days after debridement for stages II, III, and IV (all p < 0.01). Higher PUSH scores indicated a longer time of debridement accompanied by a longer wound surface healing time (p < 0.05). CONCLUSION ER stress proteins may be involved in the process of PU formation and healing; moreover, the levels of PDI and BIP were also associated with the severity of the PUs. Finally, we found that the PUSH scores can be used as a reference to evaluate PU severity and healing.
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Affiliation(s)
- Weiyan Chen
- 1 Department of Gynecology, Linyi Tumor Hospital , Linyi, P.R. China
| | - Jing Liu
- 1 Department of Gynecology, Linyi Tumor Hospital , Linyi, P.R. China
| | - Liang Zhao
- 2 Department of Orthopedics, Linyi Traditional Chinese Medicine Hospital , Linyi, P.R. China
| | - Cuijiang Wang
- 3 Department of Orthopedics, Linyi People's Hospital , Linyi, P.R. China
| | - Zengjun Li
- 4 Department of General Surgery, Tumor Hospital of Shandong Province , Jinan, P.R. China
| | - Ting Liu
- 1 Department of Gynecology, Linyi Tumor Hospital , Linyi, P.R. China
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Tanaka LY, Araújo HA, Hironaka GK, Araujo TL, Takimura CK, Rodriguez AI, Casagrande AS, Gutierrez PS, Lemos-Neto PA, Laurindo FR. Peri/Epicellular Protein Disulfide Isomerase Sustains Vascular Lumen Caliber Through an Anticonstrictive Remodeling Effect. Hypertension 2016; 67:613-22. [DOI: 10.1161/hypertensionaha.115.06177] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 11/16/2015] [Indexed: 11/16/2022]
Affiliation(s)
- Leonardo Y. Tanaka
- From the Vascular Biology Laboratory (L.Y.T., H.A.A., G.K.H., T.L.S.A., A.I.R., A.S.C., F.R.M.L.), Interventional Cardiology Unit (C.K.T., P.A.L.-N.), and Pathology Laboratory (P.S.G.), Heart Institute (InCor), University of São Paulo School of Medicine, São Paulo, Brazil
| | - Haniel A. Araújo
- From the Vascular Biology Laboratory (L.Y.T., H.A.A., G.K.H., T.L.S.A., A.I.R., A.S.C., F.R.M.L.), Interventional Cardiology Unit (C.K.T., P.A.L.-N.), and Pathology Laboratory (P.S.G.), Heart Institute (InCor), University of São Paulo School of Medicine, São Paulo, Brazil
| | - Gustavo K. Hironaka
- From the Vascular Biology Laboratory (L.Y.T., H.A.A., G.K.H., T.L.S.A., A.I.R., A.S.C., F.R.M.L.), Interventional Cardiology Unit (C.K.T., P.A.L.-N.), and Pathology Laboratory (P.S.G.), Heart Institute (InCor), University of São Paulo School of Medicine, São Paulo, Brazil
| | - Thaís L.S. Araujo
- From the Vascular Biology Laboratory (L.Y.T., H.A.A., G.K.H., T.L.S.A., A.I.R., A.S.C., F.R.M.L.), Interventional Cardiology Unit (C.K.T., P.A.L.-N.), and Pathology Laboratory (P.S.G.), Heart Institute (InCor), University of São Paulo School of Medicine, São Paulo, Brazil
| | - Celso K. Takimura
- From the Vascular Biology Laboratory (L.Y.T., H.A.A., G.K.H., T.L.S.A., A.I.R., A.S.C., F.R.M.L.), Interventional Cardiology Unit (C.K.T., P.A.L.-N.), and Pathology Laboratory (P.S.G.), Heart Institute (InCor), University of São Paulo School of Medicine, São Paulo, Brazil
| | - Andres I. Rodriguez
- From the Vascular Biology Laboratory (L.Y.T., H.A.A., G.K.H., T.L.S.A., A.I.R., A.S.C., F.R.M.L.), Interventional Cardiology Unit (C.K.T., P.A.L.-N.), and Pathology Laboratory (P.S.G.), Heart Institute (InCor), University of São Paulo School of Medicine, São Paulo, Brazil
| | - Annelise S. Casagrande
- From the Vascular Biology Laboratory (L.Y.T., H.A.A., G.K.H., T.L.S.A., A.I.R., A.S.C., F.R.M.L.), Interventional Cardiology Unit (C.K.T., P.A.L.-N.), and Pathology Laboratory (P.S.G.), Heart Institute (InCor), University of São Paulo School of Medicine, São Paulo, Brazil
| | - Paulo S. Gutierrez
- From the Vascular Biology Laboratory (L.Y.T., H.A.A., G.K.H., T.L.S.A., A.I.R., A.S.C., F.R.M.L.), Interventional Cardiology Unit (C.K.T., P.A.L.-N.), and Pathology Laboratory (P.S.G.), Heart Institute (InCor), University of São Paulo School of Medicine, São Paulo, Brazil
| | - Pedro Alves Lemos-Neto
- From the Vascular Biology Laboratory (L.Y.T., H.A.A., G.K.H., T.L.S.A., A.I.R., A.S.C., F.R.M.L.), Interventional Cardiology Unit (C.K.T., P.A.L.-N.), and Pathology Laboratory (P.S.G.), Heart Institute (InCor), University of São Paulo School of Medicine, São Paulo, Brazil
| | - Francisco R.M. Laurindo
- From the Vascular Biology Laboratory (L.Y.T., H.A.A., G.K.H., T.L.S.A., A.I.R., A.S.C., F.R.M.L.), Interventional Cardiology Unit (C.K.T., P.A.L.-N.), and Pathology Laboratory (P.S.G.), Heart Institute (InCor), University of São Paulo School of Medicine, São Paulo, Brazil
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47
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The Role of Endoplasmic Reticulum Stress and Unfolded Protein Response in Atherosclerosis. Int J Mol Sci 2016; 17:ijms17020193. [PMID: 26840309 PMCID: PMC4783927 DOI: 10.3390/ijms17020193] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 12/31/2015] [Accepted: 01/28/2016] [Indexed: 12/13/2022] Open
Abstract
Pathogenesis of atherosclerosis is a complex process involving several metabolic and signalling pathways. Accumulating evidence demonstrates that endoplasmic reticulum stress and associated apoptosis can be induced in the pathological conditions of atherosclerotic lesions and contribute to the disease progression. Notably, they may play a role in the development of vulnerable plaques that induce thrombosis and are therefore especially dangerous. Endoplasmic reticulum stress response is regulated by several signaling mechanisms that involve protein kinases and transcription factors. Some of these molecules can be regarded as potential therapeutic targets to improve treatment of atherosclerosis. In this review we will discuss the role of endoplasmic reticulum stress and apoptosis in atherosclerosis development in different cell types and summarize the current knowledge on potential therapeutic agents targeting molecules regulating these pathways and their possible use for anti-atherosclerotic therapy.
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48
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Ravi S, Johnson MS, Chacko BK, Kramer PA, Sawada H, Locy ML, Wilson LS, Barnes S, Marques MB, Darley-Usmar VM. Modification of platelet proteins by 4-hydroxynonenal: Potential Mechanisms for inhibition of aggregation and metabolism. Free Radic Biol Med 2016; 91:143-53. [PMID: 26475426 PMCID: PMC4761519 DOI: 10.1016/j.freeradbiomed.2015.10.408] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 10/06/2015] [Accepted: 10/10/2015] [Indexed: 01/23/2023]
Abstract
Platelet aggregation is an essential response to tissue injury and is associated with activation of pro-oxidant enzymes, such as cyclooxygenase, and is also a highly energetic process. The two central energetic pathways in the cell, glycolysis and mitochondrial oxidative phosphorylation, are susceptible to damage by reactive lipid species. Interestingly, how platelet metabolism is affected by the oxidative stress associated with aggregation is largely unexplored. To address this issue, we examined the response of human platelets to 4-hydroxynonenal (4-HNE), a reactive lipid species which is generated during thrombus formation and during oxidative stress. Elevated plasma 4-HNE has been associated with renal failure, septic shock and cardiopulmonary bypass surgery. In this study, we found that 4-HNE decreased thrombin stimulated platelet aggregation by approximately 60%. The metabolomics analysis demonstrated that underlying our previous observation of a stimulation of platelet energetics by thrombin glycolysis and TCA (Tricarboxylic acid) metabolites were increased. Next, we assessed the effect of both 4-HNE and alkyne HNE (A-HNE) on bioenergetics and targeted metabolomics, and found a stimulatory effect on glycolysis, associated with inhibition of bioenergetic parameters. In the presence of HNE and thrombin glycolysis was further stimulated but the levels of the TCA metabolites were markedly suppressed. Identification of proteins modified by A-HNE followed by click chemistry and mass spectrometry revealed essential targets in platelet activation including proteins involved in metabolism, adhesion, cytoskeletal reorganization, aggregation, vesicular transport, protein folding, antioxidant proteins, and small GTPases. In summary, the biological effects of 4-HNE can be more effectively explained in platelets by the integrated effects of the modification of an electrophile responsive proteome rather than the isolated effects of candidate proteins.
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Affiliation(s)
- Saranya Ravi
- Department of Pathology; UAB Mitochondrial Medicine Laboratory; Center for Free Radical Biology
| | - Michelle S Johnson
- Department of Pathology; UAB Mitochondrial Medicine Laboratory; Center for Free Radical Biology
| | - Balu K Chacko
- Department of Pathology; UAB Mitochondrial Medicine Laboratory; Center for Free Radical Biology
| | - Philip A Kramer
- Department of Pathology; UAB Mitochondrial Medicine Laboratory; Center for Free Radical Biology
| | - Hirotaka Sawada
- Department of Pathology; UAB Mitochondrial Medicine Laboratory; Center for Free Radical Biology
| | - Morgan L Locy
- Department of Pathology; UAB Mitochondrial Medicine Laboratory; Center for Free Radical Biology
| | | | - Stephen Barnes
- The Targeted Metabolomics and Proteomics Laboratory; Department of Pharmacology and Toxicology, University of Alabama at Birmingham, Birmingham, AL, USA
| | | | - Victor M Darley-Usmar
- Department of Pathology; UAB Mitochondrial Medicine Laboratory; Center for Free Radical Biology.
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49
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Montane J, de Pablo S, Obach M, Cadavez L, Castaño C, Alcarraz-Vizán G, Visa M, Rodríguez-Comas J, Parrizas M, Servitja JM, Novials A. Protein disulfide isomerase ameliorates β-cell dysfunction in pancreatic islets overexpressing human islet amyloid polypeptide. Mol Cell Endocrinol 2016; 420:57-65. [PMID: 26607804 DOI: 10.1016/j.mce.2015.11.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 11/13/2015] [Accepted: 11/13/2015] [Indexed: 01/09/2023]
Abstract
Human islet amyloid polypeptide (hIAPP) is the major component of amyloid deposits in islets of type 2 diabetic patients. hIAPP misfolding and aggregation is one of the factors that may lead to β-cell dysfunction and death. Endogenous chaperones are described to be important for the folding and functioning of proteins. Here, we examine the effect of the endoplasmic reticulum chaperone protein disulfide isomerase (PDI) on β-cell dysfunction. Among other chaperones, PDI was found to interact with hIAPP in human islet lysates. Furthermore, intrinsically recovered PDI levels were able to restore the effect of high glucose- and palmitate-induced β-cell dysfunction by increasing 3.9-fold the glucose-stimulated insulin secretion levels and restoring insulin content up to basal control values. Additionally, PDI transduction decreased induced apoptosis by glucolipotoxic conditions. This approach could reveal a new therapeutic target and aid in the development of strategies to improve β-cell dysfunction in type 2 diabetic patients.
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Affiliation(s)
- Joel Montane
- Diabetes and Obesity Research Laboratory, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic de Barcelona, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Spain
| | - Sara de Pablo
- Diabetes and Obesity Research Laboratory, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic de Barcelona, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Spain
| | - Mercè Obach
- Diabetes and Obesity Research Laboratory, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic de Barcelona, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Spain
| | - Lisa Cadavez
- Diabetes and Obesity Research Laboratory, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic de Barcelona, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Spain
| | - Carlos Castaño
- Diabetes and Obesity Research Laboratory, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic de Barcelona, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Spain
| | - Gema Alcarraz-Vizán
- Diabetes and Obesity Research Laboratory, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic de Barcelona, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Spain
| | - Montserrat Visa
- Diabetes and Obesity Research Laboratory, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic de Barcelona, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Spain
| | - Júlia Rodríguez-Comas
- Diabetes and Obesity Research Laboratory, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic de Barcelona, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Spain
| | - Marcelina Parrizas
- Diabetes and Obesity Research Laboratory, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic de Barcelona, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Spain
| | - Joan Marc Servitja
- Diabetes and Obesity Research Laboratory, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic de Barcelona, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Spain
| | - Anna Novials
- Diabetes and Obesity Research Laboratory, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic de Barcelona, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Spain.
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50
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Kenche H, Ye ZW, Vedagiri K, Richards DM, Gao XH, Tew KD, Townsend DM, Blumental-Perry A. Adverse Outcomes Associated with Cigarette Smoke Radicals Related to Damage to Protein-disulfide Isomerase. J Biol Chem 2016; 291:4763-78. [PMID: 26728460 DOI: 10.1074/jbc.m115.712331] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Indexed: 12/19/2022] Open
Abstract
Identification of factors contributing to the development of chronic obstructive pulmonary disease (COPD) is crucial for developing new treatments. An increase in the levels of protein-disulfide isomerase (PDI), a multifaceted endoplasmic reticulum resident chaperone, has been demonstrated in human smokers, presumably as a protective adaptation to cigarette smoke (CS) exposure. We found a similar increase in the levels of PDI in the murine model of COPD. We also found abnormally high levels (4-6 times) of oxidized and sulfenilated forms of PDI in the lungs of murine smokers compared with non-smokers. PDI oxidation progressively increases with age. We begin to delineate the possible role of an increased ratio of oxidized PDI in the age-related onset of COPD by investigating the impact of exposure to CS radicals, such as acrolein (AC), hydroxyquinones (HQ), peroxynitrites (PN), and hydrogen peroxide, on their ability to induce unfolded protein response (UPR) and their effects on the structure and function of PDIs. Exposure to AC, HQ, PN, and CS resulted in cysteine and tyrosine nitrosylation leading to an altered three-dimensional structure of the PDI due to a decrease in helical content and formation of a more random coil structure, resulting in protein unfolding, inhibition of PDI reductase and isomerase activity in vitro and in vivo, and subsequent induction of endoplasmic reticulum stress response. Addition of glutathione prevented the induction of UPR, and AC and HQ induced structural changes in PDI. Exposure to PN and glutathione resulted in conjugation of PDI possibly at active site tyrosine residues. The findings presented here propose a new role of PDI in the pathogenesis of COPD and its age-dependent onset.
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Affiliation(s)
- Harshavardhan Kenche
- From the Anderson Cancer Institute, Memorial Health University Medical Center, Savannah, Georgia 31404
| | - Zhi-Wei Ye
- the College of Pharmacy, Medical University of South Carolina, Charleston, South Carolina 29425
| | - Kokilavani Vedagiri
- From the Anderson Cancer Institute, Memorial Health University Medical Center, Savannah, Georgia 31404
| | - Dylan M Richards
- From the Anderson Cancer Institute, Memorial Health University Medical Center, Savannah, Georgia 31404
| | - Xing-Huang Gao
- Genetics, Case Western Reserve University, Cleveland, Ohio 44106, and
| | - Kenneth D Tew
- the College of Pharmacy, Medical University of South Carolina, Charleston, South Carolina 29425
| | - Danyelle M Townsend
- the College of Pharmacy, Medical University of South Carolina, Charleston, South Carolina 29425
| | - Anna Blumental-Perry
- From the Anderson Cancer Institute, Memorial Health University Medical Center, Savannah, Georgia 31404, the Department of Biomedical Sciences, Mercer University School of Medicine, Savannah, Georgia 31404, the Departments of Surgery and
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