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Yang Y, Chen Q, Fan S, Lu Y, Huang Q, Liu X, Peng X. Glutamine sustains energy metabolism and alleviates liver injury in burn sepsis by promoting the assembly of mitochondrial HSP60-HSP10 complex via SIRT4 dependent protein deacetylation. Redox Rep 2024; 29:2312320. [PMID: 38329114 PMCID: PMC10854458 DOI: 10.1080/13510002.2024.2312320] [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] [Indexed: 02/09/2024] Open
Abstract
Burns and burn sepsis, characterized by persistent and profound hypercatabolism, cause energy metabolism dysfunction that worsens organ injury and systemic disorders. Glutamine (Gln) is a key nutrient that remarkably replenishes energy metabolism in burn and sepsis patients, but its exact roles beyond substrate supply is unclear. In this study, we demonstrated that Gln alleviated liver injury by sustaining energy supply and restoring redox balance. Meanwhile, Gln also rescued the dysfunctional mitochondrial electron transport chain (ETC) complexes, improved ATP production, reduced oxidative stress, and protected hepatocytes from burn sepsis injury. Mechanistically, we revealed that Gln could activate SIRT4 by upregulating its protein synthesis and increasing the level of Nicotinamide adenine dinucleotide (NAD+), a co-enzyme that sustains the activity of SIRT4. This, in turn, reduced the acetylation of shock protein (HSP) 60 to facilitate the assembly of the HSP60-HSP10 complex, which maintains the activity of ETC complex II and III and thus sustain ATP generation and reduce reactive oxygen species release. Overall, our study uncovers a previously unknown pharmacological mechanism involving the regulation of HSP60-HSP10 assembly by which Gln recovers mitochondrial complex activity, sustains cellular energy metabolism and exerts a hepato-protective role in burn sepsis.
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Affiliation(s)
- Yongjun Yang
- Clinical Medical Research Center, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People’s Republic of China
| | - Qian Chen
- Clinical Medical Research Center, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People’s Republic of China
| | - Shijun Fan
- Clinical Medical Research Center, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People’s Republic of China
| | - Yongling Lu
- Clinical Medical Research Center, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People’s Republic of China
| | - Qianyin Huang
- Clinical Medical Research Center, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People’s Republic of China
| | - Xin Liu
- Clinical Medical Research Center, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People’s Republic of China
| | - Xi Peng
- Clinical Medical Research Center, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People’s Republic of China
- State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), ChongqingPeople’s Republic of China
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2
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González-Blanco L, Oliván M, Diñeiro Y, Bravo SB, Sierra V, Gagaoua M. Sequential window acquisition of all theoretical mass spectra (SWATH-MS) as an emerging proteomics approach for the discovery of dark-cutting beef biomarkers. Meat Sci 2024; 217:109618. [PMID: 39096797 DOI: 10.1016/j.meatsci.2024.109618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2024] [Revised: 07/25/2024] [Accepted: 07/29/2024] [Indexed: 08/05/2024]
Abstract
Recent advances in "omics" technologies have enabled the identification of new beef quality biomarkers and have also allowed for the early detection of quality defects such as dark-cutting beef, also known as DFD (dark, firm, and dry) beef. However, most of the studies conducted were carried out on a small number of animals and mostly applied gel-based proteomics. The present study proposes for the first time a Sequential Window Acquisition of All Theoretical Mass Spectra (SWATH-MS) proteomics approach to characterize and comprehensively quantify the post-mortem muscle proteome of DFD (pH24 ≥ 6.2) and CONTROL (5.4 ≤ pH24 ≤ 5.6) beef samples within the largest database of DFD/CONTROL beef samples to date (26 pairs of the Longissimus thoracis muscle samples of young bulls from Asturiana de los Valles breed, n = 52). The pairwise comparison yielded 35 proteins that significantly differed in their abundances between the DFD and CONTROL samples. Chemometrics methods using both PLS-DA and OPLS-DA revealed 31 and 36 proteins with VIP > 2.0, respectively. The combination of different statistical methods these being Volcano plot, PLS-DA and OPLS-DA allowed us to propose 16 proteins as good candidate biomarkers of DFD beef. These proteins are associated with interconnected biochemical pathways related to energy metabolism (DHRS7B and CYB5R3), binding and signaling (RABGGTA, MIA3, BPIFA2B, CAP2, APOBEC2, UBE2V1, KIR2DL1), muscle contraction, structure and associated proteins (DMD, PFN2), proteolysis, hydrolases, and activity regulation (AGT, C4A, GLB1, CAND2), and calcium homeostasis (ANXA6). These results evidenced the potential of SWATH-MS and chemometrics to accurately identify novel biomarkers for meat quality defects, providing a deeper understanding of the molecular mechanisms underlying dark-cutting beef condition.
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Affiliation(s)
- Laura González-Blanco
- Área de Sistemas de Producción Animal, Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), Ctra. AS-267, PK 19, 33300 Villaviciosa, Asturias, Spain
| | - Mamen Oliván
- Área de Sistemas de Producción Animal, Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), Ctra. AS-267, PK 19, 33300 Villaviciosa, Asturias, Spain
| | - Yolanda Diñeiro
- Área de Sistemas de Producción Animal, Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), Ctra. AS-267, PK 19, 33300 Villaviciosa, Asturias, Spain
| | - Susana B Bravo
- Proteomic Platform, Health Research Institute of Santiago de Compostela (IDIS), Hospital Clínico Universitario de Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - Verónica Sierra
- Área de Sistemas de Producción Animal, Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), Ctra. AS-267, PK 19, 33300 Villaviciosa, Asturias, Spain.
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Shen T, Wang S, Huang C, Zhu S, Zhu X, Li N, Wang H, Huang L, Ren M, Han Z, Ge J, Chen Z, Ouyang K. Cardiac-specific deletion of heat shock protein 60 induces mitochondrial stress and disrupts heart development in mice. Biochem Biophys Res Commun 2024; 710:149883. [PMID: 38588611 DOI: 10.1016/j.bbrc.2024.149883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 03/25/2024] [Accepted: 04/02/2024] [Indexed: 04/10/2024]
Abstract
Congenital heart diseases are the most common birth defects around the world. Emerging evidence suggests that mitochondrial homeostasis is required for normal heart development. In mitochondria, a series of molecular chaperones including heat shock protein 60 (HSP60) are engaged in assisting the import and folding of mitochondrial proteins. However, it remains largely obscure whether and how these mitochondrial chaperones regulate cardiac development. Here, we generated a cardiac-specific Hspd1 deletion mouse model by αMHC-Cre and investigated the role of HSP60 in cardiac development. We observed that deletion of HSP60 in embryonic cardiomyocytes resulted in abnormal heart development and embryonic lethality, characterized by reduced cardiac cell proliferation and thinner ventricular walls, highlighting an essential role of cardiac HSP60 in embryonic heart development and survival. Our results also demonstrated that HSP60 deficiency caused significant downregulation of mitochondrial ETC subunits and induced mitochondrial stress. Analysis of gene expression revealed that P21 that negatively regulates cell proliferation is significantly upregulated in HSP60 knockout hearts. Moreover, HSP60 deficiency induced activation of eIF2α-ATF4 pathway, further indicating the underlying mitochondrial stress in cardiomyocytes after HSP60 deletion. Taken together, our study demonstrated that regular function of mitochondrial chaperones is pivotal for maintaining normal mitochondrial homeostasis and embryonic heart development.
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Affiliation(s)
- Tao Shen
- Department of Cardiovascular Surgery, Provincial Hospital Affiliated to Anhui Medical University, Hefei, Anhui province, China; Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, Guangdong province, China
| | - Shuting Wang
- School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Peking University, Shenzhen, Guangdong province, China
| | - Can Huang
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, Guangdong province, China
| | - Siting Zhu
- School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Peking University, Shenzhen, Guangdong province, China; Department of Medicine, University of California San Diego, La Jolla, CA, USA
| | - Xiangbin Zhu
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, Guangdong province, China
| | - Na Li
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, Guangdong province, China
| | - Hong Wang
- Central Laboratory, Peking University Shenzhen Hospital, China
| | - Lei Huang
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, Guangdong province, China
| | - Mingming Ren
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, Guangdong province, China
| | - Zhen Han
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, Guangdong province, China
| | - Jianjun Ge
- Department of Cardiovascular Surgery, Provincial Hospital Affiliated to Anhui Medical University, Hefei, Anhui province, China.
| | - Ze'e Chen
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, Guangdong province, China.
| | - Kunfu Ouyang
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, Guangdong province, China.
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Ma X, Yin Z, Li H, Guo J. HSP gene superfamily in Aspongopus chinensis Dallas: unravelling identification, characterisation and expression patterns during diapause and non-diapause stages. BULLETIN OF ENTOMOLOGICAL RESEARCH 2024:1-11. [PMID: 38425077 DOI: 10.1017/s0007485324000075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Aspongopus chinensis Dallas 1851, an insect of important economic value, faces challenges in artificial breeding due to mandatory diapause and limited access to wild resources. Heat shock proteins (Hsps) are thought to influence diapause in insects, but little is known about their role in A. chinensis during diapause. This study used genomic methods to identify 25 Hsp genes in A. chinensis, including two Hsp90, 14 Hsp70, four Hsp60 and five small Hsp genes, were located on seven chromosomes, respectively. The gene structures among the same families are relatively conserved. Meanwhile, the motif compositions and secondary structures of A. chinensis Hsps (AcHsps) were predicted. RNA-seq data and fluorescence quantitative PCR analysis showed that there were differences in the expression patterns of AcHsps in diapause and non-diapause stages, and AcHsp70-5 was significantly differentially expressed in both analysis, which was enriched in the pathway of response to hormone. All the results showed that Hsps play an important role in the diapause mechanism of A. chinensis. Our observations highlight the molecular evolution of the Hsp gene and their effect on diapause in A. chinensis.
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Affiliation(s)
- Xinyi Ma
- Institute of Entomology, Guizhou University, Guiyang, P. R. China
- Scientific Observing and Experimental Station of Crop Pest in Guiyang, Ministry of Agriculture and Rural Affairs of the P. R. China, Guiyang, P. R. China
| | - Zhiyong Yin
- Institute of Entomology, Guizhou University, Guiyang, P. R. China
- Scientific Observing and Experimental Station of Crop Pest in Guiyang, Ministry of Agriculture and Rural Affairs of the P. R. China, Guiyang, P. R. China
| | - Haiyin Li
- Institute of Entomology, Guizhou University, Guiyang, P. R. China
- Scientific Observing and Experimental Station of Crop Pest in Guiyang, Ministry of Agriculture and Rural Affairs of the P. R. China, Guiyang, P. R. China
| | - Jianjun Guo
- Institute of Entomology, Guizhou University, Guiyang, P. R. China
- Scientific Observing and Experimental Station of Crop Pest in Guiyang, Ministry of Agriculture and Rural Affairs of the P. R. China, Guiyang, P. R. China
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Solana‐Balaguer J, Martín‐Flores N, Garcia‐Segura P, Campoy‐Campos G, Pérez‐Sisqués L, Chicote‐González A, Fernández‐Irigoyen J, Santamaría E, Pérez‐Navarro E, Alberch J, Malagelada C. RTP801 mediates transneuronal toxicity in culture via extracellular vesicles. J Extracell Vesicles 2023; 12:e12378. [PMID: 37932242 PMCID: PMC10627824 DOI: 10.1002/jev2.12378] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 09/29/2023] [Accepted: 10/17/2023] [Indexed: 11/08/2023] Open
Abstract
Extracellular vesicles (EVs) play a crucial role in intercellular communication, participating in the paracrine trophic support or in the propagation of toxic molecules, including proteins. RTP801 is a stress-regulated protein, whose levels are elevated during neurodegeneration and induce neuron death. However, whether RTP801 toxicity is transferred trans-neuronally via EVs remains unknown. Hence, we overexpressed or silenced RTP801 protein in cultured cortical neurons, isolated their derived EVs (RTP801-EVs or shRTP801-EVs, respectively), and characterized EVs protein content by mass spectrometry (MS). RTP801-EVs toxicity was assessed by treating cultured neurons with these EVs and quantifying apoptotic neuron death and branching. We also tested shRTP801-EVs functionality in the pathologic in vitro model of 6-Hydroxydopamine (6-OHDA). Expression of RTP801 increased the number of EVs released by neurons. Moreover, RTP801 led to a distinct proteomic signature of neuron-derived EVs, containing more pro-apoptotic markers. Hence, we observed that RTP801-induced toxicity was transferred to neurons via EVs, activating apoptosis and impairing neuron morphology complexity. In contrast, shRTP801-EVs were able to increase the arborization in recipient neurons. The 6-OHDA neurotoxin elevated levels of RTP801 in EVs, and 6-OHDA-derived EVs lost the mTOR/Akt signalling activation via Akt and RPS6 downstream effectors. Interestingly, EVs derived from neurons where RTP801 was silenced prior to exposing them to 6-OHDA maintained Akt and RPS6 transactivation in recipient neurons. Taken together, these results suggest that RTP801-induced toxicity is transferred via EVs, and therefore, it could contribute to the progression of neurodegenerative diseases, in which RTP801 is involved.
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Affiliation(s)
- Júlia Solana‐Balaguer
- Department of Biomedical SciencesUniversitat de BarcelonaBarcelonaSpain
- Institut de Neurociències (UBneuro)Universitat de BarcelonaBarcelonaSpain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED)BarcelonaSpain
| | - Núria Martín‐Flores
- Department of Biomedical SciencesUniversitat de BarcelonaBarcelonaSpain
- Institut de Neurociències (UBneuro)Universitat de BarcelonaBarcelonaSpain
| | - Pol Garcia‐Segura
- Department of Biomedical SciencesUniversitat de BarcelonaBarcelonaSpain
- Institut de Neurociències (UBneuro)Universitat de BarcelonaBarcelonaSpain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED)BarcelonaSpain
| | - Genís Campoy‐Campos
- Department of Biomedical SciencesUniversitat de BarcelonaBarcelonaSpain
- Institut de Neurociències (UBneuro)Universitat de BarcelonaBarcelonaSpain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED)BarcelonaSpain
| | - Leticia Pérez‐Sisqués
- Department of Biomedical SciencesUniversitat de BarcelonaBarcelonaSpain
- Institut de Neurociències (UBneuro)Universitat de BarcelonaBarcelonaSpain
| | - Almudena Chicote‐González
- Department of Biomedical SciencesUniversitat de BarcelonaBarcelonaSpain
- Institut de Neurociències (UBneuro)Universitat de BarcelonaBarcelonaSpain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED)BarcelonaSpain
| | | | - Enrique Santamaría
- Proteored‐ISCIIIProteomics UnitNavarrabiomed, Departamento de SaludUPNAIdiSNAPamplonaSpain
| | - Esther Pérez‐Navarro
- Department of Biomedical SciencesUniversitat de BarcelonaBarcelonaSpain
- Institut de Neurociències (UBneuro)Universitat de BarcelonaBarcelonaSpain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED)BarcelonaSpain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS)BarcelonaSpain
| | - Jordi Alberch
- Department of Biomedical SciencesUniversitat de BarcelonaBarcelonaSpain
- Institut de Neurociències (UBneuro)Universitat de BarcelonaBarcelonaSpain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED)BarcelonaSpain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS)BarcelonaSpain
| | - Cristina Malagelada
- Department of Biomedical SciencesUniversitat de BarcelonaBarcelonaSpain
- Institut de Neurociències (UBneuro)Universitat de BarcelonaBarcelonaSpain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED)BarcelonaSpain
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Liu Y, Tong Z, Ni M, Ren X, Bu X, Shao H, Chehreh Chelgani S. Leaching kinetics of impurity removal from aphanitic graphite by HCl leaching. SEP SCI TECHNOL 2023. [DOI: 10.1080/01496395.2023.2193672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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7
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Metformin confers longitudinal cardiac protection by preserving mitochondrial homeostasis following myocardial ischemia/reperfusion injury. Eur J Nucl Med Mol Imaging 2023; 50:825-838. [PMID: 36322187 DOI: 10.1007/s00259-022-06008-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 10/12/2022] [Indexed: 11/06/2022]
Abstract
PURPOSE Myocardial ischemia-reperfusion (I/R) injury is associated with systemic oxidative stress, cardiac mitochondrial homeostasis, and cardiomyocyte apoptosis. Metformin has been recognized to attenuate cardiomyocyte apoptosis. However, the longitudinal effects and pathomechanism of metformin on the regulation of myocardial mitohormesis following I/R treatment remain unclear. This study aimed to investigate the longitudinal effects and mechanism of metformin in regulating cardiac mitochondrial homeostasis by serial imaging with the 18-kDa translocator protein (TSPO)-targeted positron emission tomography (PET) tracer 18F-FDPA. METHODS Myocardial I/R injury was established in Sprague-Dawley rats, which were treated with or without metformin (150 mg/kg per day). Serial gated 18F-FDG and 18F-FDPA PET imaging were performed at 1, 4, and 8 weeks after surgery, followed by analysis of ventricular remodelling and cardiac mitochondrial homeostasis. The correlation between Hsp60 and 18F-FDPA uptake was analyzed. After PET imaging, the activity of antioxidant enzymes, immunostaining, and western blot analysis were performed to analyze the spatio-temporal effects and pathomechanism of metformin for cardiac protection after myocardial I/R injury. RESULTS Oxidative stress and apoptosis increased 1 week after myocardial I/R injury (before significant progression of ventricular remodelling). TSPO expression was correlated with Hsp60 expression and was co-localized with inflammatory CD68+ macrophages in the infarct area, and TSPO uptake was associated with an upregulation of AMPK-p/AMPK and a downregulation of Bcl-2/Bax. However, these effects were reversed with metformin treatment. Eight weeks after myocardial I/R injury (representing the advanced stage of heart failure), 18F-FDPA uptake in myocardial cells in the distal non-infarct area increased without CD68+ expression, whereas the activity decreased with metformin treatment. CONCLUSION Taken together, these results show that a prolonged metformin treatment has pleiotropic protective effects against myocardial I/R injury associated with a regional and temporal dynamic balance between mitochondrial homeostasis and cardiac outcome, which were assessed by TSPO-targeted imaging during cardiac remodelling.
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Park J, Yu F, Fulcher JM, Williams SM, Engbrecht K, Moore RJ, Clair GC, Petyuk V, Nesvizhskii AI, Zhu Y. Evaluating Linear Ion Trap for MS3-Based Multiplexed Single-Cell Proteomics. Anal Chem 2023; 95:1888-1898. [PMID: 36637389 DOI: 10.1021/acs.analchem.2c03739] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
There is a growing demand to develop high-throughput and high-sensitivity mass spectrometry methods for single-cell proteomics. The commonly used isobaric labeling-based multiplexed single-cell proteomics approach suffers from distorted protein quantification due to co-isolated interfering ions during MS/MS fragmentation, also known as ratio compression. We reasoned that the use of MS3-based quantification could mitigate ratio compression and provide better quantification. However, previous studies indicated reduced proteome coverages in the MS3 method, likely due to long duty cycle time and ion losses during multilevel ion selection and fragmentation. Herein, we described an improved MS acquisition method for MS3-based single-cell proteomics by employing a linear ion trap to measure reporter ions. We demonstrated that linear ion trap can increase the proteome coverages for single-cell-level peptides with even higher gain obtained via the MS3 method. The optimized real-time search MS3 method was further applied to study the immune activation of single macrophages. Among a total of 126 single cells studied, over 1200 and 1000 proteins were quantifiable when at least 50 and 75% nonmissing data were required, respectively. Our evaluation also revealed several limitations of the low-resolution ion trap detector for multiplexed single-cell proteomics and suggested experimental solutions to minimize their impacts on single-cell analysis.
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Affiliation(s)
- Junho Park
- Department of Pharmacology, School of Medicine, CHA University, Seongnam-si, Gyeonggi-do, Seongnam 13488, Republic of Korea
| | - Fengchao Yu
- Department of Pathology, University of Michigan, Ann Arbor, Michigan 48109-1382, United States
| | - James M Fulcher
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Sarah M Williams
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Kristin Engbrecht
- Nuclear, Chemistry, and Biology Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Ronald J Moore
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Geremy C Clair
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Vladislav Petyuk
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Alexey I Nesvizhskii
- Department of Pathology, University of Michigan, Ann Arbor, Michigan 48109-1382, United States
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan 48109-1382, United States
| | - Ying Zhu
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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9
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Review of Diagnostic Biomarkers in Autoimmune Pancreatitis: Where Are We Now? Diagnostics (Basel) 2021; 11:diagnostics11050770. [PMID: 33923064 PMCID: PMC8146865 DOI: 10.3390/diagnostics11050770] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 04/22/2021] [Accepted: 04/23/2021] [Indexed: 12/16/2022] Open
Abstract
Autoimmune pancreatitis (AIP) is a pancreatic manifestation of an IgG4-related disease (IgG4-RD). AIP lacks disease-specific biomarkers, and therefore, it is difficult to distinguish AIP from malignancies, especially pancreatic cancer. In this review, we have summarized the latest findings on potential diagnostic biomarkers for AIP. Many investigations have been conducted, but no specific biomarkers for AIP are identified. Therefore, further studies are required to identify accurate diagnostic biomarkers for AIP.
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10
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Chen Z, Huang L, Tso A, Wang S, Fang X, Ouyang K, Han Z. Mitochondrial Chaperones and Proteases in Cardiomyocytes and Heart Failure. Front Mol Biosci 2021; 8:630332. [PMID: 33937324 PMCID: PMC8082175 DOI: 10.3389/fmolb.2021.630332] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 02/26/2021] [Indexed: 12/12/2022] Open
Abstract
Heart failure is one of the leading causes of morbidity and mortality worldwide. In cardiomyocytes, mitochondria are not only essential organelles providing more than 90% of the ATP necessary for contraction, but they also play critical roles in regulating intracellular Ca2+ signaling, lipid metabolism, production of reactive oxygen species (ROS), and apoptosis. Because mitochondrial DNA only encodes 13 proteins, most mitochondrial proteins are nuclear DNA-encoded, synthesized, and transported from the cytoplasm, refolded in the matrix to function alone or as a part of a complex, and degraded if damaged or incorrectly folded. Mitochondria possess a set of endogenous chaperones and proteases to maintain mitochondrial protein homeostasis. Perturbation of mitochondrial protein homeostasis usually precedes disruption of the whole mitochondrial quality control system and is recognized as one of the hallmarks of cardiomyocyte dysfunction and death. In this review, we focus on mitochondrial chaperones and proteases and summarize recent advances in understanding how these proteins are involved in the initiation and progression of heart failure.
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Affiliation(s)
- Zee Chen
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, Shenzhen, China.,State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, China
| | - Lei Huang
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, Shenzhen, China
| | - Alexandria Tso
- Department of Medicine, School of Medicine, University of California, San Diego, La Jolla, CA, United States
| | - Shijia Wang
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, China
| | - Xi Fang
- Department of Medicine, School of Medicine, University of California, San Diego, La Jolla, CA, United States
| | - Kunfu Ouyang
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, Shenzhen, China.,State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, China
| | - Zhen Han
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, China
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11
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Wen Z, Li J, Fu Y, Zheng Y, Ma M, Wang C. Hypertrophic Adipocyte-Derived Exosomal miR-802-5p Contributes to Insulin Resistance in Cardiac Myocytes Through Targeting HSP60. Obesity (Silver Spring) 2020; 28:1932-1940. [PMID: 32844579 DOI: 10.1002/oby.22932] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 06/01/2020] [Accepted: 06/05/2020] [Indexed: 12/17/2022]
Abstract
OBJECTIVE This study aimed to elucidate the mechanism by which hypertrophic adipocytes regulate insulin signaling in cardiac myocytes. METHODS Palmitate was used to induce hypertrophic 3T3-L1 adipocytes. Exosomes were purified from normal control or hypertrophic 3T3-L1 adipocyte-associated conditioned medium. Exosome-exposed neonatal rat ventricular myocytes were stimulated with insulin to investigate the effects of exosomes on insulin signaling. Small interfering RNA techniques were used to downregulate protein levels, and their efficiency was evaluated by Western blot. RESULTS Hypertrophic adipocyte-derived exosomes highly expressed miR-802-5p. Insulin sensitivity of neonatal rat ventricular myocytes was negatively regulated by miR-802-5p. TargetScan and luciferase reporter assays revealed that heat shock protein 60 (HSP60) was a direct target of miR-802-5p. HSP60 silencing was found to induce insulin resistance and to mitigate the insulin-sensitizing effects of adiponectin. In addition, HSP60 depletion significantly increased the expression levels of C/EBP-homologous protein and enhanced oxidative stress, accompanied by the increases in the phosphorylation of JNK and IRS-1 Ser307. Moreover, the effects of HSP60 knockdown on C/EBP-homologous protein and oxidative stress were abolished by the inhibition of either miR-802-5p or endocytosis. CONCLUSIONS Hypertrophic adipocyte-derived exosomal miR-802-5p caused cardiac insulin resistance through downregulating HSP60. These findings provide a novel mechanism by which epicardial adipose tissue impairs cardiac function.
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Affiliation(s)
- Zhongyuan Wen
- Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Junfeng Li
- Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yalin Fu
- Department of Pathology & Pathophysiology, Wuhan University School of Basic Medical Sciences, Wuhan, China
- Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, China
| | - Yuyang Zheng
- Department of Pathology & Pathophysiology, Wuhan University School of Basic Medical Sciences, Wuhan, China
- Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, China
| | - Mingke Ma
- Department of Pathology & Pathophysiology, Wuhan University School of Basic Medical Sciences, Wuhan, China
- Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, China
| | - Changhua Wang
- Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan, China
- Department of Pathology & Pathophysiology, Wuhan University School of Basic Medical Sciences, Wuhan, China
- Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, China
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12
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Alam S, Abdullah CS, Aishwarya R, Morshed M, Bhuiyan MS. Molecular Perspectives of Mitochondrial Adaptations and Their Role in Cardiac Proteostasis. Front Physiol 2020; 11:1054. [PMID: 32982788 PMCID: PMC7481364 DOI: 10.3389/fphys.2020.01054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Accepted: 07/31/2020] [Indexed: 12/17/2022] Open
Abstract
Mitochondria are the key to properly functioning energy generation in the metabolically demanding cardiomyocytes and thus essential to healthy heart contractility on a beat-to-beat basis. Mitochondria being the central organelle for cellular metabolism and signaling in the heart, its dysfunction leads to cardiovascular disease. The healthy mitochondrial functioning critical to maintaining cardiomyocyte viability and contractility is accomplished by adaptive changes in the dynamics, biogenesis, and degradation of the mitochondria to ensure cellular proteostasis. Recent compelling evidence suggests that the classical protein quality control system in cardiomyocytes is also under constant mitochondrial control, either directly or indirectly. Impairment of cytosolic protein quality control may affect the position of the mitochondria in relation to other organelles, as well as mitochondrial morphology and function, and could also activate mitochondrial proteostasis. Despite a growing interest in the mitochondrial quality control system, very little information is available about the molecular function of mitochondria in cardiac proteostasis. In this review, we bring together current understanding of the adaptations and role of the mitochondria in cardiac proteostasis and describe the adaptive/maladaptive changes observed in the mitochondrial network required to maintain proteomic integrity. We also highlight the key mitochondrial signaling pathways activated in response to proteotoxic stress as a cellular mechanism to protect the heart from proteotoxicity. A deeper understanding of the molecular mechanisms of mitochondrial adaptations and their role in cardiac proteostasis will help to develop future therapeutics to protect the heart from cardiovascular diseases.
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Affiliation(s)
- Shafiul Alam
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center, Shreveport, LA, United States
| | - Chowdhury S Abdullah
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center, Shreveport, LA, United States
| | - Richa Aishwarya
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, LA, United States
| | - Mahboob Morshed
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center, Shreveport, LA, United States
| | - Md Shenuarin Bhuiyan
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center, Shreveport, LA, United States.,Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, LA, United States
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13
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Duan Y, Tang H, Mitchell-Silbaugh K, Fang X, Han Z, Ouyang K. Heat Shock Protein 60 in Cardiovascular Physiology and Diseases. Front Mol Biosci 2020; 7:73. [PMID: 32426370 PMCID: PMC7203681 DOI: 10.3389/fmolb.2020.00073] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 03/31/2020] [Indexed: 01/01/2023] Open
Abstract
Heat shock protein 60 (HSP60) is a highly conserved protein abundantly expressed in both prokaryotic and eukaryotic cells. In mammals, HSP60 has been primarily considered to reside in the mitochondria, where HSP60 and HSP10 form a complex and facilitate mitochondrial protein folding. However, HSP60 is also observed in the cytoplasm, the plasma membrane, and the extracellular space. HSP60 regulates a broad spectrum of cellular events including protein trafficking, peptide hormone signaling, cell survival, cell proliferation, inflammation, and immunization. In the cardiovascular system, growing evidence indicates that HSP60 could not only play an important role under physiological conditions, but also regulate the initiation and progression of heart failure and atherosclerosis. In this review, we focus on recent progress in understanding the function of HSP60 in cardiomyocytes, endothelial cells, and vascular smooth muscle cells (VSMCs), respectively, and discuss the related signaling pathways that have been found in these cells, so as to illustrate the role of HSP60 in the development of cardiovascular disease.
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Affiliation(s)
- Yaoyun Duan
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, China
| | - Huayuan Tang
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, China
| | - Kali Mitchell-Silbaugh
- Department of Medicine, School of Medicine, University of California, San Diego, La Jolla, CA, United States
| | - Xi Fang
- Department of Medicine, School of Medicine, University of California, San Diego, La Jolla, CA, United States
| | - Zhen Han
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, Shenzhen, China
| | - Kunfu Ouyang
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, China
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Mitochondrial Heat Shock Response Induced by Ectromelia Virus is Accompanied by Reduced Apoptotic Potential in Murine L929 Fibroblasts. Arch Immunol Ther Exp (Warsz) 2019; 67:401-414. [PMID: 31324924 PMCID: PMC6805811 DOI: 10.1007/s00005-019-00554-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 07/09/2019] [Indexed: 12/18/2022]
Abstract
Poxviruses utilize multiple strategies to prevent activation of extrinsic and intrinsic apoptotic pathways for successful replication. Mitochondrial heat shock proteins (mtHsps), especially Hsp60 and its cofactor Hsp10, are engaged in apoptosis regulation; however, until now, the influence of poxviruses on mtHsps has never been studied. We used highly infectious Moscow strain of ectromelia virus (ECTV) to investigate the mitochondrial heat shock response and apoptotic potential in permissive L929 fibroblasts. Our results show that ECTV-infected cells exhibit mostly mitochondrial localization of Hsp60 and Hsp10, and show overexpression of both proteins during later stages of infection. ECTV infection has only moderate effect on the electron transport chain subunit expression. Moreover, increase of mtHsp amounts is accompanied by lack of apoptosis, and confirmed by reduced level of pro-apoptotic Bax protein and elevated levels of anti-apoptotic Bcl-2 and Bcl-xL proteins. Taken together, we show a positive relationship between increased levels of Hsp60 and Hsp10 and decreased apoptotic potential of L929 fibroblasts, and further hypothesize that Hsp60 and/or its cofactor play important roles in maintaining protein homeostasis in mitochondria for promotion of cell survival allowing efficient replication of ECTV.
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15
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Fan F, Duan Y, Yang F, Trexler C, Wang H, Huang L, Li Y, Tang H, Wang G, Fang X, Liu J, Jia N, Chen J, Ouyang K. Deletion of heat shock protein 60 in adult mouse cardiomyocytes perturbs mitochondrial protein homeostasis and causes heart failure. Cell Death Differ 2019; 27:587-600. [PMID: 31209364 PMCID: PMC7205885 DOI: 10.1038/s41418-019-0374-x] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/10/2019] [Accepted: 06/05/2019] [Indexed: 01/22/2023] Open
Abstract
To maintain healthy mitochondrial enzyme content and function, mitochondria possess a complex protein quality control system, which is composed of different endogenous sets of chaperones and proteases. Heat shock protein 60 (HSP60) is one of these mitochondrial molecular chaperones and has been proposed to play a pivotal role in the regulation of protein folding and the prevention of protein aggregation. However, the physiological function of HSP60 in mammalian tissues is not fully understood. Here we generated an inducible cardiac-specific HSP60 knockout mouse model, and demonstrated that HSP60 deletion in adult mouse hearts altered mitochondrial complex activity, mitochondrial membrane potential, and ROS production, and eventually led to dilated cardiomyopathy, heart failure, and lethality. Proteomic analysis was performed in purified control and mutant mitochondria before mutant hearts developed obvious cardiac abnormalities, and revealed a list of mitochondrial-localized proteins that rely on HSP60 (HSP60-dependent) for correctly folding in mitochondria. We also utilized an in vitro system to assess the effects of HSP60 deletion on mitochondrial protein import and protein stability after import, and found that both HSP60-dependent and HSP60-independent mitochondrial proteins could be normally imported in mutant mitochondria. However, the former underwent degradation in mutant mitochondria after import, suggesting that the protein exhibited low stability in mutant mitochondria. Interestingly, the degradation could be almost fully rescued by a non-specific LONP1 and proteasome inhibitor, MG132, in mutant mitochondria. Therefore, our results demonstrated that HSP60 plays an essential role in maintaining normal cardiac morphology and function by regulating mitochondrial protein homeostasis and mitochondrial function.
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Affiliation(s)
- Feifei Fan
- School of Chemical Biology and Biotechnology, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, 518055, Shenzhen, China
| | - Yaoyun Duan
- School of Chemical Biology and Biotechnology, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, 518055, Shenzhen, China
| | - Feili Yang
- School of Chemical Biology and Biotechnology, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, 518055, Shenzhen, China
| | - Christa Trexler
- Department of Medicine, School of Medicine, University of California San Diego, La Jolla, CA, 92093, USA
| | - Hong Wang
- School of Chemical Biology and Biotechnology, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, 518055, Shenzhen, China
| | - Lei Huang
- Shenzhen Peking University Hospital, 518055, Shenzhen, China
| | - Yali Li
- School of Chemical Biology and Biotechnology, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, 518055, Shenzhen, China
| | - Huayuan Tang
- School of Chemical Biology and Biotechnology, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, 518055, Shenzhen, China
| | - Gang Wang
- Department of Pathophysiology, School of Medicine, Shenzhen University, 518055, Shenzhen, China
| | - Xi Fang
- Department of Medicine, School of Medicine, University of California San Diego, La Jolla, CA, 92093, USA
| | - Jie Liu
- Department of Pathophysiology, School of Medicine, Shenzhen University, 518055, Shenzhen, China
| | - Nan Jia
- Shenzhen People's Hospital, 518055, Shenzhen, China
| | - Ju Chen
- Department of Medicine, School of Medicine, University of California San Diego, La Jolla, CA, 92093, USA.
| | - Kunfu Ouyang
- School of Chemical Biology and Biotechnology, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, 518055, Shenzhen, China.
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16
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Wang XR, Wang C, Ban FX, Zhu DT, Liu SS, Wang XW. Genome-wide identification and characterization of HSP gene superfamily in whitefly (Bemisia tabaci) and expression profiling analysis under temperature stress. INSECT SCIENCE 2019; 26:44-57. [PMID: 28714602 DOI: 10.1111/1744-7917.12505] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 05/22/2017] [Accepted: 06/01/2017] [Indexed: 05/14/2023]
Abstract
Heat shock proteins (HSP) are essential molecular chaperones that play important roles in the stress stimulation of insects. Bemisia tabaci, a phloem feeder and invasive species, can cause extensive crop damage through direct feeding and transmission of plant viruses. Here we employed comprehensive genomics approaches to identity HSP superfamily members in the Middle East Asia Minor 1 whitefly genome. In total, we identified 26 Hsp genes, including three Hsp90, 17 Hsp70, one Hsp60 and five sHSP (small heat shock protein) genes. The HSP gene superfamily of whitefly is expanded compared with the other five insects surveyed here. The gene structures among the same families are relatively conserved. Meanwhile, the motif compositions and secondary structures of BtHsp proteins were predicted. In addition, quantitative polymerase chain reaction analysis showed that the expression patterns of BtHsp gene superfamily were diverse across different tissues of whiteflies. Most Hsp genes were induced or repressed by thermal stress (40°C) and cold treatment (4°C) in whitefly. Silencing the expression of BtHsp70-6 significantly decreased the survival rate of whitefly under 45°C. All the results showed the Hsps conferred thermo-tolerance or cold-tolerance to whiteflies that protect them from being affected by detrimental temperature conditions. Our observations highlighted the molecular evolutionary properties and the response mechanism to temperature assaults of Hsp genes in whitefly.
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Affiliation(s)
- Xin-Ru Wang
- Ministry of Agriculture Key Laboratory of Agricultural Entomology, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Chao Wang
- Ministry of Agriculture Key Laboratory of Agricultural Entomology, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Fei-Xue Ban
- Ministry of Agriculture Key Laboratory of Agricultural Entomology, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Dan-Tong Zhu
- Ministry of Agriculture Key Laboratory of Agricultural Entomology, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Shu-Sheng Liu
- Ministry of Agriculture Key Laboratory of Agricultural Entomology, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Xiao-Wei Wang
- Ministry of Agriculture Key Laboratory of Agricultural Entomology, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
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17
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Savla JJ, Levine BD, Sadek HA. The Effect of Hypoxia on Cardiovascular Disease: Friend or Foe? High Alt Med Biol 2019; 19:124-130. [PMID: 29939783 DOI: 10.1089/ham.2018.0044] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Savla, Jainy J., Benjamin D. Levine, and Hesham A. Sadek. The effect of hypoxia on cardiovascular disease: Friend or foe? High Alt Med Biol. 19:124-130, 2018.-Over 140 million people reside at altitudes exceeding 2500 m across the world, resulting in exposure to atmospheric (hypobaric) hypoxia. Whether this chronic exposure is beneficial or detrimental to the cardiovascular system, however, is uncertain. On one hand, multiple studies have suggested a protective effect of living at moderate and high altitudes for cardiovascular risk factors and cardiovascular disease (CVD) events. Conversely, residence at high altitude comes at the tradeoff of developing diseases such as chronic mountain sickness and high-altitude pulmonary hypertension and worsens outcomes for diseases such as chronic obstructive pulmonary disease. Interestingly, recently published data show a potential role for severe hypoxia as a unique and unexpected therapy after myocardial infarction. In this review, we will discuss the current literature evaluating the effects of altitude exposure and the accompanying hypoxia on health and the potential therapeutic applications of hypoxia on CVD.
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Affiliation(s)
- Jainy J Savla
- 1 Department of Cardiology, University of Texas Southwestern Medical Center , Dallas, Texas
| | - Benjamin D Levine
- 1 Department of Cardiology, University of Texas Southwestern Medical Center , Dallas, Texas
- 2 Institute for Exercise and Environmental Medicine , Texas Health Presbyterian Hospital, Dallas, Texas
| | - Hesham A Sadek
- 1 Department of Cardiology, University of Texas Southwestern Medical Center , Dallas, Texas
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18
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Wang H, Li XN, Li PC, Liu W, Du ZH, Li JL. Modulation of heat-shock response is associated with Di (2-ethylhexyl) phthalate (DEHP)-induced cardiotoxicity in quail (Coturnix japonica). CHEMOSPHERE 2019; 214:812-820. [PMID: 30300839 DOI: 10.1016/j.chemosphere.2018.10.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 09/30/2018] [Accepted: 10/01/2018] [Indexed: 06/08/2023]
Abstract
Di(2-ethylhexyl) phthalate (DEHP) is an omnipresent environmental pollutant with endocrine disrupting properties. As a plasticizer, DEHP can be leach from the plastic to transfer the external environment and thus enters the animal food chain, causing serious damage to the animal organs. The heat-shock response (HSR) comprising heat-shock protein (HSPs) and heat-shock transcription factor (HSFs) plays a pivotal role in various toxic stress conditions. For the sake of investigating the effects of DEHP exposure on cardiac toxicity and the regulation of HSR, male quail were fed the diet with 0, 250, 500 and 750 mg/kg DEHP by gavage administration for 45 days. Histopathological changes including cardiomyocyte swelling and muscle fiber dilatation were observed in the hearts exposed to DEHP. During the DEHP treatment, the mRNA expression of HSP60 and HSP70 were universally reduced, while the expression of other HSPs (HSP10, HSP25, HSP27, HSP40, HSP47, HSP90, HSP110) had different degrees of growth. In addition, the levels of HSF1, HSF2, and HSF3 were significantly increased. Given the facts above, DEHP exposure induced the toxic effects of quail heart. DEHP exposure did great harm to HSR via affecting the synthesis of HSFs to mediate the transcription of the HSPs. Ultimately, this study provided new evidence that DEHP-induced cardiotoxicity in quail was related to activation of HSR and playing a protective role.
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Affiliation(s)
- Hui Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Xue-Nan Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Peng-Cheng Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Wei Liu
- Energy & Environmental Research Institute of Heilongjiang Province, Harbin, 150027, PR China
| | - Zheng-Hai Du
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Jin-Long Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China; Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, Northeast Agricultural University, Harbin, 150030, PR China; Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agricultural University, Harbin, 150030, PR China.
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19
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Yu Q, Tian X, Shao L, Xu L, Dai R, Li X. Label-free proteomic strategy to compare the proteome differences between longissimus lumborum and psoas major muscles during early postmortem periods. Food Chem 2018; 269:427-435. [DOI: 10.1016/j.foodchem.2018.07.040] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 06/30/2018] [Accepted: 07/05/2018] [Indexed: 01/08/2023]
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20
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Yu Q, Wu W, Tian X, Jia F, Xu L, Dai R, Li X. Comparative proteomics to reveal muscle-specific beef color stability of Holstein cattle during post-mortem storage. Food Chem 2017; 229:769-778. [DOI: 10.1016/j.foodchem.2017.03.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 02/20/2017] [Accepted: 03/01/2017] [Indexed: 12/11/2022]
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21
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Maan A, Jorgensen NW, Mansour M, Dudley S, Jenny NS, deFilippi C, Szklo M, Alonso A, Refaat MM, Ruskin J, Heckbert SR, Heist EK. Association between Heat Shock Protein-60 and Development of Atrial Fibrillation: Results from the Multi-Ethnic Study of Atherosclerosis (MESA). Pacing Clin Electrophysiol 2016; 39:1373-1378. [PMID: 27807875 PMCID: PMC5367624 DOI: 10.1111/pace.12969] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 10/13/2016] [Accepted: 10/28/2016] [Indexed: 01/14/2023]
Abstract
BACKGROUND During atrial fibrillation (AF), a high rate of myocyte activation causes cellular stress and initiates the process of atrial remodeling, which further promotes persistence of AF. Although heat shock proteins (HSPs) have been shown to prevent atrial remodeling and suppress the occurrence of AF in cellular and animal experimental models, increased levels of HSP-60 have been observed in patients with postoperative AF, likely reflecting a response to cellular stress. To better understand the role of HSP-60 in relation to AF, we examined the association of HSP-60 levels in relation to the future development of AF in the Multi-Ethnic Study of Atherosclerosis (MESA). METHODS MESA is a cohort study that recruited 6,814 participants aged 45-84 years and free of known cardiovascular disease at baseline (2000-2002) from six field centers. We investigated 983 participants, selected at random from the total cohort, who had HSP-60 measured and were free of AF at baseline. We tested the association of HSP-60 levels with the incidence of AF using multivariate Cox models after adjustment for demographics, clinical characteristics, and biomarkers. RESULTS During an average of 10.6 years of follow-up, 77 participants developed AF. We did not observe a significant association between the log-transformed HSP-60 levels and development of AF on either unadjusted or multivariate analysis (adjusted hazard ratio: 1.02 per unit difference on natural log scale, 95% confidence interval: 0.77-1.34 ln (ng/mL). CONCLUSION Contrary to the findings from the preclinical studies, which demonstrated an important role of HSP-60 in the pathogenesis of AF, we did not observe a significant association between HSP-60 and occurrence of AF.
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Affiliation(s)
- Abhishek Maan
- Division of Cardiology, The Warren Alpert Medical School of Brown University, Providence, RI
| | | | - Moussa Mansour
- Cardiac Arrhythmia Service and Heart Center, Massachusetts General Hospital, Boston, MA
| | - Samuel Dudley
- Division of Cardiology, The Warren Alpert Medical School of Brown University, Providence, RI
| | - Nancy S. Jenny
- Laboratory for Clinical Biochemistry Research, University of Vermont College of Medicine, Burlington, VT
| | | | - Moyses Szklo
- Departments of Epidemiology and Medicine, The Johns Hopkins University, Baltimore, MD
| | - Alvaro Alonso
- Division of Epidemiology and Public Health, University of Minnesota, Minneapolis, MN
| | - Marwan M. Refaat
- Department of Internal Medicine, Cardiology/Cardiac Electrophysiology and Department of Biochemistry and Molecular Genetics, American University of Beirut Faculty of Medicine and Medical Center, Cairo street, Beirut, Lebanon
| | - Jeremy Ruskin
- Cardiac Arrhythmia Service and Heart Center, Massachusetts General Hospital, Boston, MA
| | - Susan R. Heckbert
- Cardiovascular Health Research Unit, Department of Epidemiology, University of Washington, Seattle, WA
| | - E. Kevin Heist
- Cardiac Arrhythmia Service and Heart Center, Massachusetts General Hospital, Boston, MA
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22
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Cheng Y, Sun J, Chen H, Adam A, Tang S, Kemper N, Hartung J, Bao E. Expression and location of HSP60 and HSP10 in the heart tissue of heat-stressed rats. Exp Ther Med 2016; 12:2759-2765. [PMID: 27698781 DOI: 10.3892/etm.2016.3650] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 01/11/2016] [Indexed: 12/16/2022] Open
Abstract
The present study aimed to analyze the expression levels and localizations of heat shock protein (HSP) 60 and HSP10 in the heart tissue of rats subjected to heat stress (42°C) for 0, 20, 80 and 100 min. Histopathological injuries and increased serum activities of serum lactate dehydrogenase and creatine kinase isoenzyme MB were detected in the heated rat myocardial cells. These results suggested that heat stress-induced acute degeneration may be sufficient to cause sudden death in animals by disrupting the function and permeability of the myocardial cell membrane. In addition, the expression levels of HSP60 were significantly increased following 20 min heat stress, whereas the expression levels of its cofactor HSP10 were not. Furthermore, the location of HSP60, but not of HSP10, was significantly altered during periods of heat stress. These results suggested that HSP60 in myocardial tissue may be more susceptive to the effects of heat stress as compared with HSP10, and that HSP10 is constitutively expressed in the heart of rats. The expression levels and localizations of HSP60 and HSP10 at the different time points of heat stress were not similar, which suggested that HSP60 and HSP10 may not form a complex in the heart tissue of heat-stressed rats.
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Affiliation(s)
- Yanfen Cheng
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P.R. China
| | - Jiarui Sun
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P.R. China
| | - Hongbo Chen
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P.R. China
| | - Abdelnasir Adam
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P.R. China
| | - Shu Tang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P.R. China
| | - Nicole Kemper
- Institute for Animal Hygiene, Animal Welfare and Farm Animal Behaviour, University of Veterinary Medicine Hannover, Foundation, 30559 Hannover, Germany
| | - Jörg Hartung
- Institute for Animal Hygiene, Animal Welfare and Farm Animal Behaviour, University of Veterinary Medicine Hannover, Foundation, 30559 Hannover, Germany
| | - Endong Bao
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P.R. China
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Fernández-Caggiano M, Prysyazhna O, Barallobre-Barreiro J, CalviñoSantos R, Aldama López G, Generosa Crespo-Leiro M, Eaton P, Doménech N. Analysis of Mitochondrial Proteins in the Surviving Myocardium after Ischemia Identifies Mitochondrial Pyruvate Carrier Expression as Possible Mediator of Tissue Viability. Mol Cell Proteomics 2015; 15:246-55. [PMID: 26582072 DOI: 10.1074/mcp.m115.051862] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Indexed: 01/08/2023] Open
Abstract
The endogenous mechanisms contributing to tissue survival following myocardial infarction are not fully understood. We investigated the alterations in the mitochondrial proteome after ischemia-reperfusion (I/R) and its possible implications on cell survival. Mitochondrial proteomic analysis of cardiac tissue from an in vivo porcine I/R model found that surviving tissue in the peri-infarct border zone showed increased expression of several proteins. Notably, these included subunits of the mitochondrial pyruvate carrier (MPC), namely MPC1 and MPC2. Western blot, immunohistochemistry, and mRNA analysis corroborated the elevated expression of MPC in the surviving tissue. Furthermore, MPC1 and MPC2 protein levels were found to be markedly elevated in the myocardium of ischemic cardiomyopathy patients. These findings led to the hypothesis that increased MPC expression is cardioprotective due to enhancement of mitochondrial pyruvate uptake in the energy-starved heart following I/R. To test this, isolated mouse hearts perfused with a modified Krebs buffer (containing glucose, pyruvate, and octanoate as metabolic substrates) were subjected to I/R with or without the MPC transport inhibitor UK5099. UK5099 increased myocardial infarction and attenuated post-ischemic recovery of left ventricular end-diastolic pressure. However, aerobically perfused control hearts that were exposed to UK5099 did not modulate contractile function, although pyruvate uptake was blocked as evidenced by increased cytosolic lactate and pyruvate levels. Our findings indicate that increased expression of MPC leads to enhanced uptake and utilization of pyruvate during I/R. We propose this as a putative endogenous mechanism that promotes myocardial survival to limit infarct size.
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Affiliation(s)
- Mariana Fernández-Caggiano
- From the ‡Cardiovascular Division, King's College London, The Rayne Institute, and St. Thomas' Hospital, London SE1 7EH, United Kingdom
| | - Oleksandra Prysyazhna
- From the ‡Cardiovascular Division, King's College London, The Rayne Institute, and St. Thomas' Hospital, London SE1 7EH, United Kingdom
| | | | | | | | | | - Philip Eaton
- From the ‡Cardiovascular Division, King's College London, The Rayne Institute, and St. Thomas' Hospital, London SE1 7EH, United Kingdom
| | - Nieves Doménech
- **Cardiac Biomarkers Group, Instituto de Investigación Biomédica de A Coruña, Complexo Hospitalario Universitario de A Coruña, As Xubias 84, 15006 A Coruña, Spain
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Protective Effects of Scutellarin on Human Cardiac Microvascular Endothelial Cells against Hypoxia-Reoxygenation Injury and Its Possible Target-Related Proteins. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:278014. [PMID: 26557144 PMCID: PMC4628680 DOI: 10.1155/2015/278014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 04/25/2015] [Accepted: 04/25/2015] [Indexed: 11/17/2022]
Abstract
Scutellarin (SCU) is one of the main components of traditional Chinese medicine plant Erigeron breviscapus (Vant.) Hand.-Mazz. In this paper, we studied the protective effects of SCU on human cardiac microvascular endothelial cells (HCMECs) against hypoxia-reoxygenation (HR) injury and its possible target-related proteins. Results of MTT assay showed that pretreatment of SCU at doses of 1, 5, and 10 μM for 2 h could significantly inhibit the decrease in cell viability of HCMECs induced by HR injury. Subcellular fractions of cells treated with vehicle control, 1 μM SCU, HR injury, or 1 μM SCU + HR injury were separated by ultracentrifugation. The protein expression profiles of cytoplasm and membrane/nuclei fractions were checked using protein two-dimensional electrophoresis (2-DE). Proteins differentially expressed between control and SCU-treated group, control and HR group, or HR and SCU + HR group were identified using mass spectrometry (MS/MS). Possible interaction network of these target-related proteins was predicted using bioinformatic analysis. The influence of SCU on the expression levels of these proteins was confirmed using Western blotting assay. The results indicated that proteins such as p27BBP protein (EIF6), heat shock 60 kDa protein 1 (HSPD1), and chaperonin containing TCP1 subunit 6A isoform (CCT6A) might play important roles in the effects of SCU.
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25
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Neonatal Death and Heart Failure in Mouse with Transgenic HSP60 Expression. BIOMED RESEARCH INTERNATIONAL 2015; 2015:539805. [PMID: 26504810 PMCID: PMC4609373 DOI: 10.1155/2015/539805] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2015] [Accepted: 08/26/2015] [Indexed: 11/18/2022]
Abstract
Mitochondrial heat shock proteins, such as HSP60, are chaperones responsible for the folding, transport, and quality control of mitochondrial matrix proteins and are essential for maintaining life. Both prosurvival and proapoptotic roles have been proposed for HSP60, and HSP60 is reportedly involved in the initiation of autoimmune, metabolic, and cardiovascular diseases. The role of HSP60 in pathogenesis of these diseases remains unclear, partly because of the lack of mouse models expressing HSP60. In this study we generated HSP60 conditional transgenic mice suitable for investigating in vivo outcomes by expressing HSP60 at the targeted organ in disease models. Ubiquitous HSP60 induction in the embryonic stage caused neonatal death in mice at postnatal day 1. A high incidence of atrial septal defects was observed in HSP60-expressing mice, with increased apoptosis and myocyte degeneration that possibly contributed to massive hemorrhage and sponge-like cardiac muscles. Our results showed that neonatal heart failure through HSP60 induction likely involves developmental defects and excessive apoptosis. The conditional HSP60 mouse model is useful for studying crucial biological questions concerning HSP60.
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Corrao S, Anzalone R, Lo Iacono M, Corsello T, Di Stefano A, D'Anna SE, Balbi B, Carone M, Sala A, Corona D, Timperio AM, Zolla L, Farina F, de Macario EC, Macario AJL, Cappello F, La Rocca G. Hsp10 nuclear localization and changes in lung cells response to cigarette smoke suggest novel roles for this chaperonin. Open Biol 2015; 4:rsob.140125. [PMID: 25355063 PMCID: PMC4221893 DOI: 10.1098/rsob.140125] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Heat-shock protein (Hsp)10 is the co-chaperone for Hsp60 inside mitochondria, but it also resides outside the organelle. Variations in its levels and intracellular distribution have been documented in pathological conditions, e.g. cancer and chronic obstructive pulmonary disease (COPD). Here, we show that Hsp10 in COPD undergoes changes at the molecular and subcellular levels in bronchial cells from human specimens and derived cell lines, intact or subjected to stress induced by cigarette smoke extract (CSE). Noteworthy findings are: (i) Hsp10 occurred in nuclei of epithelial and lamina propria cells of bronchial mucosa from non-smokers and smokers; (ii) human bronchial epithelial (16HBE) and lung fibroblast (HFL-1) cells, in vitro, showed Hsp10 in the nucleus, before and after CSE exposure; (iii) CSE stimulation did not increase the levels of Hsp10 but did elicit qualitative changes as indicated by molecular weight and isoelectric point shifts; and (iv) Hsp10 nuclear levels increased after CSE stimulation in HFL-1, indicating cytosol to nucleus migration, and although Hsp10 did not bind DNA, it bound a DNA-associated protein.
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Affiliation(s)
- Simona Corrao
- Istituto Euro-Mediterraneo di Scienza e Tecnologia (IEMEST), Palermo, Italy Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Università degli Studi di Palermo, Palermo, Italy
| | - Rita Anzalone
- Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Università degli Studi di Palermo, Palermo, Italy
| | - Melania Lo Iacono
- Istituto Euro-Mediterraneo di Scienza e Tecnologia (IEMEST), Palermo, Italy Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Università degli Studi di Palermo, Palermo, Italy
| | - Tiziana Corsello
- Istituto Euro-Mediterraneo di Scienza e Tecnologia (IEMEST), Palermo, Italy Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Università degli Studi di Palermo, Palermo, Italy
| | - Antonino Di Stefano
- Laboratorio di Citoimmunopatologia dell'apparato cardio-respiratorio, Fondazione 'S. Maugeri' IRCCS, Istituto di Veruno, Veruno (NO), Italy
| | | | - Bruno Balbi
- Divisione di Pneumologia, Fondazione 'S. Maugeri' IRCCS, Istituto di Veruno, Veruno (NO), Italy
| | - Mauro Carone
- Fondazione 'S. Maugeri' IRCCS, Istituto Scientifico di Cassano delle Murge, Cassano delle Murge (BA), Italy
| | - Anna Sala
- Dipartimento STEBICEF, Istituto Telethon Dulbecco c/o Universita' degli Studi di Palermo, Sezione di Biologia Cellulare, Palermo, Italy
| | - Davide Corona
- Dipartimento STEBICEF, Istituto Telethon Dulbecco c/o Universita' degli Studi di Palermo, Sezione di Biologia Cellulare, Palermo, Italy
| | | | - Lello Zolla
- Department of Biology and Ecology "La Tuscia" University, Viterbo, Italy
| | - Felicia Farina
- Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Università degli Studi di Palermo, Palermo, Italy
| | - Everly Conway de Macario
- Department of Microbiology and Immunology, School of Medicine, University of Maryland at Baltimore, Baltimore, MD, USA IMET, Columbus Center, Baltimore, MD, USA
| | - Alberto J L Macario
- Istituto Euro-Mediterraneo di Scienza e Tecnologia (IEMEST), Palermo, Italy Department of Microbiology and Immunology, School of Medicine, University of Maryland at Baltimore, Baltimore, MD, USA IMET, Columbus Center, Baltimore, MD, USA
| | - Francesco Cappello
- Istituto Euro-Mediterraneo di Scienza e Tecnologia (IEMEST), Palermo, Italy Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Università degli Studi di Palermo, Palermo, Italy
| | - Giampiero La Rocca
- Istituto Euro-Mediterraneo di Scienza e Tecnologia (IEMEST), Palermo, Italy Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Università degli Studi di Palermo, Palermo, Italy
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Park SJ, Jo DS, Shin JH, Kim ES, Jo YK, Choi ES, Seo HM, Kim SH, Hwang JJ, Jo DG, Koh JY, Cho DH. Suppression of Cpn10 increases mitochondrial fission and dysfunction in neuroblastoma cells. PLoS One 2014; 9:e112130. [PMID: 25390895 PMCID: PMC4229138 DOI: 10.1371/journal.pone.0112130] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Accepted: 10/12/2014] [Indexed: 11/24/2022] Open
Abstract
To date, several regulatory proteins involved in mitochondrial dynamics have been identified. However, the precise mechanism coordinating these complex processes remains unclear. Mitochondrial chaperones regulate mitochondrial function and structure. Chaperonin 10 (Cpn10) interacts with heat shock protein 60 (HSP60) and functions as a co-chaperone. In this study, we found that down-regulation of Cpn10 highly promoted mitochondrial fragmentation in SK-N-MC and SH-SY5Y neuroblastoma cells. Both genetic and chemical inhibition of Drp1 suppressed the mitochondrial fragmentation induced by Cpn10 reduction. Reactive oxygen species (ROS) generation in 3-NP-treated cells was markedly enhanced by Cpn10 knock down. Depletion of Cpn10 synergistically increased cell death in response to 3-NP treatment. Furthermore, inhibition of Drp1 recovered Cpn10-mediated mitochondrial dysfunction in 3-NP-treated cells. Moreover, an ROS scavenger suppressed cell death mediated by Cpn10 knockdown in 3-NP-treated cells. Taken together, these results showed that down-regulation of Cpn10 increased mitochondrial fragmentation and potentiated 3-NP-mediated mitochondrial dysfunction in neuroblastoma cells.
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Affiliation(s)
- So Jung Park
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, South Korea
| | - Doo Sin Jo
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, South Korea
| | - Ji Hyun Shin
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, South Korea
| | - Eun Sung Kim
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, South Korea
| | - Yoon Kyung Jo
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, South Korea
| | - Eun Sun Choi
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, South Korea
| | - Hae Mi Seo
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, South Korea
- Department of Genetic Engineering, Kyung Hee University, Yongin, South Korea
| | - Sung Hyun Kim
- School of Medicine, Kyung Hee University, Seoul, South Korea
| | - Jung Jin Hwang
- Asan Institute for Life Science, Institute for Innovative Cancer Research, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Dong-Gyu Jo
- School of Pharmacy, Sungkyunkwan University, Suwon, South Korea
| | - Jae-Young Koh
- Department of Neurology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Dong-Hyung Cho
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, South Korea
- * E-mail:
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Kennedy D, Jäger R, Mosser DD, Samali A. Regulation of apoptosis by heat shock proteins. IUBMB Life 2014; 66:327-38. [PMID: 24861574 DOI: 10.1002/iub.1274] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Accepted: 05/01/2014] [Indexed: 01/22/2023]
Abstract
Thermotolerance, the acquired resistance of cells to stress, is a well-established phenomenon. Studies of the key mediators of this response, the heat shock proteins (HSPs), have led to the discovery of the important roles played by these proteins in the regulation of apoptotic cell death. Apoptosis is critical for normal tissue homeostasis and is involved in diverse processes including development and immune clearance. Apoptosis is tightly regulated by both proapoptotic and antiapoptotic factors, and dysregulation of apoptosis plays a significant role in the pathophysiology of many diseases. In the recent years, HSPs have been identified as key determinants of cell survival, which can modulate apoptosis by directly interacting with components of the apoptotic machinery. Therefore, manipulation of the HSPs could represent a viable strategy for the treatment of diseases. Here, we review the current knowledge with regard to the mechanisms of HSP-mediated regulation of apoptosis.
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Affiliation(s)
- Donna Kennedy
- Department of Biochemistry, Apoptosis Research Centre, Biosciences Research Building, Corrib Village, NUI Galway, Dangan, Galway, Ireland
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29
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Xu D, Sun L, Liu S, Zhang L, Ru X, Zhao Y, Yang H. Molecular cloning of heat shock protein 10 (Hsp10) and 60 (Hsp60) cDNAs and their expression analysis under thermal stress in the sea cucumber Apostichopus japonicus. Comp Biochem Physiol B Biochem Mol Biol 2014; 171:49-57. [DOI: 10.1016/j.cbpb.2014.03.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 02/25/2014] [Accepted: 03/28/2014] [Indexed: 12/16/2022]
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30
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Drastichova Z, Skrabalova J, Jedelsky P, Neckar J, Kolar F, Novotny J. Global changes in the rat heart proteome induced by prolonged morphine treatment and withdrawal. PLoS One 2012; 7:e47167. [PMID: 23056601 PMCID: PMC3467212 DOI: 10.1371/journal.pone.0047167] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Accepted: 09/10/2012] [Indexed: 12/18/2022] Open
Abstract
Morphine belongs among the most commonly used opioids in medical practice due to its strong analgesic effects. However, sustained administration of morphine leads to the development of tolerance and dependence and may cause long-lasting alterations in nervous tissue. Although proteomic approaches enabled to reveal changes in multiple gene expression in the brain as a consequence of morphine treatment, there is lack of information about the effect of this drug on heart tissue. Here we studied the effect of 10-day morphine exposure and subsequent drug withdrawal (3 or 6 days) on the rat heart proteome. Using the iTRAQ technique, we identified 541 proteins in the cytosol, 595 proteins in the plasma membrane-enriched fraction and 538 proteins in the mitochondria-enriched fraction derived from the left ventricles. Altogether, the expression levels of 237 proteins were altered by morphine treatment or withdrawal. The majority of changes (58 proteins) occurred in the cytosol after a 3-day abstinence period. Significant alterations were found in the expression of heat shock proteins (HSP27, α-B crystallin, HSP70, HSP10 and HSP60), whose levels were markedly up-regulated after morphine treatment or withdrawal. Besides that morphine exposure up-regulated MAPK p38 (isoform CRA_b) which is a well-known up-stream mediator of phosphorylation and activation of HSP27 and α-B crystallin. Whereas there were no alterations in the levels of proteins involved in oxidative stress, several changes were determined in the levels of pro- and anti-apoptotic proteins. These data provide a complex view on quantitative changes in the cardiac proteome induced by morphine treatment or withdrawal and demonstrate great sensitivity of this organ to morphine.
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Affiliation(s)
- Zdenka Drastichova
- Department of Physiology, Faculty of Science, Charles University in Prague, Prague, Czech Republic
| | - Jitka Skrabalova
- Department of Physiology, Faculty of Science, Charles University in Prague, Prague, Czech Republic
| | - Petr Jedelsky
- Department of Cell Biology, Faculty of Science, Charles University in Prague, Prague, Czech Republic
| | - Jan Neckar
- Department of Developmental Cardiology, Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Frantisek Kolar
- Department of Developmental Cardiology, Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Jiri Novotny
- Department of Physiology, Faculty of Science, Charles University in Prague, Prague, Czech Republic
- * E-mail:
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31
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Zhang X, Dai L, Wu Z, Jian J, Lu Y. Molecular cloning, mRNA expression, and characterization of heat shock protein 10 gene from humphead snapper Lutjanus sanguineus. Mar Genomics 2011; 4:143-50. [DOI: 10.1016/j.margen.2010.10.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2010] [Revised: 10/04/2010] [Accepted: 10/05/2010] [Indexed: 10/18/2022]
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Isoflurane preconditioning involves upregulation of molecular chaperone genes. Biochem Biophys Res Commun 2011; 411:387-92. [PMID: 21741358 DOI: 10.1016/j.bbrc.2011.06.156] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2011] [Accepted: 06/24/2011] [Indexed: 11/22/2022]
Abstract
Isoflurane preconditioning is a phenomenon in which cells previously exposed to isoflurane exhibit protection against subsequent noxious stimuli. We hypothesize that isoflurane may cause subtle protein misfolding that persists at a sublethal level, stimulating cytoprotective mechanisms. Human neuroblastoma cells (SH-SY5Y) were exposed to isoflurane followed by quantitative analysis of the expression of several families of heat shock genes (84 total transcripts). Our data is consistent with a model of an early and delayed phase of preconditioning. Different patterns of expression of the 84 genes were seen at 1 and 24h post-isoflurane exposure. Expression of 45 of the 84 genes were elevated at 1h (or early phase) and remained upregulated at 24h (or delayed phase). Subsets of the remaining genes were either unchanged (13 genes), early-specific upregulated (17 genes) or delayed-specific upregulated (9 genes). We also demonstrated that isoflurane caused a slight yet detectable misfold of a model protein. These data indicate that brief anesthetic exposure promotes specific patterns of gene expression, leading to preconditioning which would enhance the cell's ability to tolerate a future injury that involves protein misfolding.
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33
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Mohammad G, Kowluru RA. Novel role of mitochondrial matrix metalloproteinase-2 in the development of diabetic retinopathy. Invest Ophthalmol Vis Sci 2011; 52:3832-41. [PMID: 21345984 DOI: 10.1167/iovs.10-6368] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
PURPOSE In the pathogenesis of diabetic retinopathy, retinal mitochondria become dysfunctional, their DNA is damaged, and capillary cells undergo accelerated apoptosis. Matrix metalloproteinase-2 (MMP2) becomes activated and proapoptotic, and the therapies that inhibit the development of diabetic retinopathy alleviate MMP2 activation. The authors sought to elucidate the possible mechanism by which activated MMP2 contributes to mitochondrial dysfunction. METHODS The effect of the regulation of MMP2 on mitochondrial dysfunction and the subcellular localization of the molecular chaperone important for mitochondrial integrity (Hsp60) and gap junction protein connexin 43 were investigated in retinal endothelial cells. The results were confirmed in retinal mitochondria isolated from diabetic mouse overexpressing MnSOD and in the retinas of normal rats that received intravitreal administration of MMP2. RESULTS High glucose increased MMP2 and decreased connexin 43 in the mitochondria of retinal endothelial cells. Although the Hsp60 gene transcript was increased, its abundance in the mitochondria was decreased, and its interaction with MMP2 was increased. In mice, the overexpression of MnSOD protected retinal mitochondria from diabetes-induced increases in MMP2 and decreases in Hsp60 and connexin 43. MMP2 administration in normal rats damaged the retinal mitochondria, decreased Hsp60 and connexin 43, and accelerated the apoptosis of retinal capillary cells. CONCLUSIONS Elevated MMP2 in the mitochondria degrades its membranes by modulating Hsp60 and damaging connexin 43, and this activates the apoptotic machinery. Better understanding of MMP2-mediated mitochondrial damage could help identify new strategies for the treatment of this blinding disease.
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Affiliation(s)
- Ghulam Mohammad
- Kresge Eye Institute, Wayne State University, Detroit, Michigan
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34
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Boengler K, Heusch G, Schulz R. Nuclear-encoded mitochondrial proteins and their role in cardioprotection. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2011; 1813:1286-94. [PMID: 21255616 DOI: 10.1016/j.bbamcr.2011.01.009] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2010] [Revised: 12/22/2010] [Accepted: 01/09/2011] [Indexed: 11/29/2022]
Abstract
During myocardial ischemia/reperfusion, mitochondria are both a source and a target of injury. In cardioprotective maneuvers such as ischemic and pharmacological pre- and postconditioning mitochondria have a decisive role. Since about 99% of the mitochondrial proteins are encoded in the nucleus, deleterious and protective mitochondrial effects most likely comprise the import of cytosolic proteins. The present review therefore discusses the role of mitochondria in myocardial ischemia/reperfusion injury and protection from it, focusing on some cytosolic proteins, which are translocated into mitochondria before, during, or following ischemia/reperfusion. Both morphological and functional alterations are discussed at the level of the heart, the cardiomyocyte and/or the mitochondrion itself. This article is part of a Special Issue entitled: Mitochondria and Cardioprotection.
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Affiliation(s)
- Kerstin Boengler
- Institut für Pathophysiologie, Zentrum für Innere Medizin, Universitätsklinikum Essen, Hufelandstr. 55, 45122 Essen, Germany.
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35
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Shan ZX, Lin QX, Deng CY, Zhu JN, Mai LP, Liu JL, Fu YH, Liu XY, Li YX, Zhang YY, Lin SG, Yu XY. miR-1/miR-206 regulate Hsp60 expression contributing to glucose-mediated apoptosis in cardiomyocytes. FEBS Lett 2010; 584:3592-600. [PMID: 20655308 DOI: 10.1016/j.febslet.2010.07.027] [Citation(s) in RCA: 158] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2010] [Revised: 07/12/2010] [Accepted: 07/15/2010] [Indexed: 01/06/2023]
Abstract
Hsp60 is an important component of defense mechanisms against diabetic myocardial injury; however, the cause of Hsp60 reduction in the diabetic myocardium remains unknown. After stimulation of cardiomyocytes with high glucose in vivo and in vitro, significant up-regulation of miR-1/miR-206 and post-transcriptional modulation of Hsp 60 were observed. Serum response factor (SRF) and the MEK1/2 pathway were involved in miR-1 and miR-206 expression in cardiomyocytes. miR-1 and miR-206 regulated Hsp60 expression post-transcriptionally and accelerated cardiomyocyte apoptosis through Hsp60. These results revealed that miR-1 and miR-206 regulate Hsp60 expression, contributing to high glucose-mediated apoptosis in cardiomyocytes.
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Affiliation(s)
- Zhi-Xin Shan
- Research Center of Guangdong General Hospital, Guangdong Provincial Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
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Knowlton AA, Srivatsa U. Heat-shock protein 60 and cardiovascular disease: a paradoxical role. Future Cardiol 2009; 4:151-61. [PMID: 19804293 DOI: 10.2217/14796678.4.2.151] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Heat-shock proteins (HSPs) are members of a highly conserved group of proteins that are induced in response to stress and injury. These proteins have protective properties, and can protect the heart from injury. HSP60 is found in the mitochondria and cytosol, and has essential intracellular functions including folding key proteins after their import into the mitochondria. In the cytosol, HSP60 binds to proapoptotic proteins, sequestering them. HSPs are highly conserved and, thus, are similar to bacterial proteins. Many individuals have antibodies to HSP60, possibly from prior infections. HSP60 can be found in the plasma membrane and in the serum in disease states. Serum HSP60 may be a marker for coronary artery disease. Once extracellular, HSP60 can cause cell injury. Thus, this protein has dichotomous functions for which the role in disease remains to be fully elucidated.
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Affiliation(s)
- Anne A Knowlton
- University of California, Molecular & Cellular Cardiology, Davis One Shields Avenue, Davis, CA 95616, USA, and Department of Veterans Affairs, Northern california Health Care System, Mather, CA, USA.
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37
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Corrao S, Campanella C, Anzalone R, Farina F, Zummo G, Conway de Macario E, Macario AJL, Cappello F, La Rocca G. Human Hsp10 and Early Pregnancy Factor (EPF) and their relationship and involvement in cancer and immunity: current knowledge and perspectives. Life Sci 2009; 86:145-52. [PMID: 19913561 DOI: 10.1016/j.lfs.2009.11.004] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2009] [Revised: 10/29/2009] [Accepted: 11/05/2009] [Indexed: 02/02/2023]
Abstract
This article is about Hsp10 and its intracellular and extracellular forms focusing on the relationship of the latter with Early Pregnancy Factor and on their roles in cancer and immunity. Cellular physiology and survival are finely regulated and depend on the correct functioning of the entire set of proteins. Misfolded or unfolded proteins can cause deleterious effects and even cell death. The chaperonins Hsp10 and Hsp60 act together inside the mitochondria to assist protein folding. Recent studies demonstrated that these proteins have other roles inside and outside the cell, either together or independently of each other. For example, Hsp10 was found increased in the cytosol of different tumors (although in other tumors it was found decreased). Moreover, Hsp10 localizes extracellularly during pregnancy and is often indicated as Early Pregnancy Factor (EPF), which is released during the first stages of gestation and is involved in the establishment of pregnancy. Various reports show that extracellular Hsp10 and EPF modulate certain aspects of the immune response with anti-inflammatory effects in patients with autoimmune conditions improving clinically after treatment with recombinant Hsp10. Moreover, Hsp10 and EPF are involved in embryonic development, acting as a growth factor, and in cell proliferation/differentiation mechanisms. Therefore, it becomes evident that Hsp10 is not only a co-chaperonin, but an active player in its own right in various cellular functions. In this article, we present an overview of various aspects of Hsp10 and EPF as they participate in physiological and pathological processes such as the antitumor response and autoimmune diseases.
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Affiliation(s)
- Simona Corrao
- Dipartimento di Medicina Sperimentale, Università degli Studi di Palermo, Via del Vespro 129, 90127, Palermo, Italy.
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Mokhtari D, Kerblom B, Mehmeti I, Wang X, Funa NS, Olerud J, Lenzen S, Welsh N, Welsh M. Increased Hsp70 expression attenuates cytokine-induced cell death in islets of Langerhans from Shb knockout mice. Biochem Biophys Res Commun 2009; 387:553-7. [PMID: 19615333 DOI: 10.1016/j.bbrc.2009.07.051] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2009] [Accepted: 07/13/2009] [Indexed: 10/20/2022]
Abstract
Type 1 diabetes may depend on cytokine-induced beta-cell death and therefore the current investigation was performed in order to elucidate this response in Shb-deficient islets. A combination of interleukin-1beta and interferon-gamma caused a diminished beta-cell death response in Shb null islets. Furthermore, the induction of an unfolded protein response (UPR) by adding cyclopiazonic acid did not increase cell death in Shb-deficient islets, despite simultaneous expression of UPR markers. The heat-shock protein Hsp70 was more efficiently induced in Shb knockout islets, providing an explanation for the decreased susceptibility of Shb-deficient islets to cytokines. It is concluded that islets deficient in the Shb protein are less susceptible to cytotoxic conditions, and that this partly depends on their increased ability to induce Hsp70 under such circumstances. Interference with Shb signaling may provide means to improve beta-cell viability under conditions of beta-cell stress.
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Affiliation(s)
- Dariush Mokhtari
- Department of Medical Cell Biology, Uppsala University, Husargatan 3, Uppsala, Sweden
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Endocrine regulation of heat shock protein mRNA levels in long-lived dwarf mice. Mech Ageing Dev 2009; 130:393-400. [PMID: 19428459 DOI: 10.1016/j.mad.2009.03.004] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2009] [Revised: 03/12/2009] [Accepted: 03/28/2009] [Indexed: 11/22/2022]
Abstract
Heat shock proteins (HSPs) maintain proteostasis and may protect against age-associated pathology caused by protein malfolding. In Caenorhabditis elegans, the lifespan extension and thermotolerance in mutants with impaired insulin/IGF signals depend partly on HSP elevation. Less is known about the role of HSPs in the increased lifespan of mice with defects in GH/IGF-I pathways. We measured HSP mRNAs in liver, kidney, heart, lung, muscle and cerebral cortex from long-lived Pit1(dw/dw) Snell dwarf mice. We found many significant differences in HSP mRNA levels between dwarf and control mice, but these effects were complex and organ-specific. We noted 15 instances where HSP mRNAs were lower in Pit1(dw/dw) liver, kidney, or heart tissues, and 14/15 of these were also seen in Ghr(-/-) mice, which lack GH receptor. In contrast, of 12 examples where HSP mRNAs were higher in Snell liver, kidney, or heart, none were altered in Ghr(-/-) mice. Four liver mRNAs were depressed in both Pit1(dw/dw) and Ghr(-/-) mice, and each of these was elevated by GH injection in Ames (Prop1(df/df)) dwarf mice, consistent with the hypothesis that these declines depended on GH and/or IGF-I. Contributions of chaperones to longevity in mice may be more complex than those inferred from C. elegans.
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Qiu J, Gao HQ, Liang Y, Yu H, Zhou RH. Comparative proteomics analysis reveals role of heat shock protein 60 in digoxin-induced toxicity in human endothelial cells. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2008; 1784:1857-64. [DOI: 10.1016/j.bbapap.2008.07.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2008] [Revised: 06/18/2008] [Accepted: 07/08/2008] [Indexed: 11/25/2022]
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Tsutsumi YM, Horikawa YT, Jennings MM, Kidd MW, Niesman IR, Yokoyama U, Head BP, Hagiwara Y, Ishikawa Y, Miyanohara A, Patel PM, Insel PA, Patel HH, Roth DM. Cardiac-specific overexpression of caveolin-3 induces endogenous cardiac protection by mimicking ischemic preconditioning. Circulation 2008; 118:1979-88. [PMID: 18936328 DOI: 10.1161/circulationaha.108.788331] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Caveolae, lipid-rich microdomains of the sarcolemma, localize and enrich cardiac-protective signaling molecules. Caveolin-3 (Cav-3), the dominant isoform in cardiac myocytes, is a determinant of caveolar formation. We hypothesized that cardiac myocyte-specific overexpression of Cav-3 would enhance the formation of caveolae and augment cardiac protection in vivo. METHODS AND RESULTS Ischemic preconditioning in vivo increased the formation of caveolae. Adenovirus for Cav-3 increased caveolar formation and phosphorylation of survival kinases in cardiac myocytes. A transgenic mouse with cardiac myocyte-specific overexpression of Cav-3 (Cav-3 OE) showed enhanced formation of caveolae on the sarcolemma. Cav-3 OE mice subjected to ischemia/reperfusion injury had a significantly reduced infarct size relative to transgene-negative mice. Endogenous cardiac protection in Cav-3 OE mice was similar to wild-type mice undergoing ischemic preconditioning; no increased protection was observed in preconditioned Cav-3 OE mice. Cav-3 knockout mice did not show endogenous protection and showed no protection in response to ischemic preconditioning. Cav-3 OE mouse hearts had increased basal Akt and glycogen synthase kinase-3beta phosphorylation comparable to wild-type mice exposed to ischemic preconditioning. Wortmannin, a phosphoinositide 3-kinase inhibitor, attenuated basal phosphorylation of Akt and glycogen synthase kinase-3beta and blocked cardiac protection in Cav-3 OE mice. Cav-3 OE mice had improved functional recovery and reduced apoptosis at 24 hours of reperfusion. CONCLUSIONS Expression of caveolin-3 is both necessary and sufficient for cardiac protection, a conclusion that unites long-standing ultrastructural and molecular observations in the ischemic heart. The present results indicate that increased expression of caveolins, apparently via actions that depend on phosphoinositide 3-kinase, has the potential to protect hearts exposed to ischemia/reperfusion injury.
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Affiliation(s)
- Yasuo M Tsutsumi
- Department of Anesthesiology, University of California, San Diego, La Jolla, USA
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Yu J, Bao E, Yan J, Lei L. Expression and localization of Hsps in the heart and blood vessel of heat-stressed broilers. Cell Stress Chaperones 2008; 13:327-35. [PMID: 18350374 PMCID: PMC2673943 DOI: 10.1007/s12192-008-0031-7] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2008] [Revised: 02/08/2008] [Accepted: 02/08/2008] [Indexed: 11/25/2022] Open
Abstract
The objective of this study was to investigate the kinetics of Hsp60, Hsp70, Hsp90 protein, and messenger RNA (mRNA) expression levels and to correlate these heat shock protein (Hsp) levels with tissue damage resulting from exposure to high temperatures for varying amounts of time. One hundred broilers were heat-stressed for 0, 2, 3, 5, and 10 h, respectively, by rapidly increasing the ambient temperature from 22 +/- 1 degrees C to 37 +/- 1 degrees C. Obvious elevations of plasma creatine kinase indicate damage to myocardial cells after heat stress. Hsp70 and Hsp90, and their corresponding mRNAs in the heart tissue of heat-stressed broilers, elevated significantly after 2 h of heat exposure and decreased quickly with continued heat stress. However, the levels of hsp60 mRNA in the heart of heat-stressed broilers increased sharply (P < 0.01) at 2 h of heat stress but then decreased quickly after 3 h, while the level of Hsp60 protein in the heart increased (P < 0.01) at 2 h of heat stress and maintained a high level throughout heat exposure. The results indicate that the elevation of the three Hsps, especially Hsp60 in heart, may be important markers at the beginning of heat stress and act as protective proteins in adverse environments. The reduction of Hsp signals in the cytoplasm of myocardial cells implies that myocardial cell lesions may have an adverse impact on the function of Hsps during heat stress. Meanwhile, the localization of Hsp70 in blood vessels of broiler hearts suggests another possible mechanism for protection of the heart after heat exposure.
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Affiliation(s)
- Jimian Yu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China
| | - Endong Bao
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China
| | - Jianyan Yan
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China
| | - Lei Lei
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China
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Tanonaka K, Toga W, Yoshida H, Takeo S. Myocardial heat shock protein changes in the failing heart following coronary artery ligation. Heart Lung Circ 2008; 12:60-5. [PMID: 16352108 DOI: 10.1046/j.1444-2892.2003.00139.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Production of several heat shock proteins (Hsp) is enhanced after exposure to stress. There is little information concerning changes in myocardial Hsp under pathophysiological conditions. The aim of this study was to determine alterations in Hsp content in the viable left ventricular myocardium during the development of heart failure following coronary artery ligation (CAL). METHODS Myocardial infarction was produced by CAL of Wistar rats. One and eight weeks after the operation, haemodynamic parameters of rats with CAL were determined and then expression of Hsp27, Hsp60 and Hsp72 was measured by western blotting. RESULTS Animals showed a decrease in cardiac output and an increase in left ventricular end-diastolic pressure, symptoms of chronic heart failure (CHF), 8 weeks after CAL. Myocardial Hsp27 and Hsp72 at 1 week after CAL significantly increased, whereas expression of both proteins at 8 weeks was similar to that in rats which underwent a sham operation (without coronary artery ligation). In contrast, Hsp60 at 8 weeks, but not at 1 week, significantly increased in the sham rats. CONCLUSIONS Diverse changes in myocardial Hsp occurred during the development of CHF.
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Affiliation(s)
- Kouichi Tanonaka
- Department of Pharmacology, Tokyo University of Pharmacy and Life Science, Tokyo, Japan
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Changes in immunoreactivity of HSP60 and its neuroprotective effects in the gerbil hippocampal CA1 region induced by transient ischemia. Exp Neurol 2007; 208:247-56. [DOI: 10.1016/j.expneurol.2007.08.017] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2007] [Revised: 08/16/2007] [Accepted: 08/22/2007] [Indexed: 12/31/2022]
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Yang M, Tan H, Cheng L, He M, Wei Q, Tanguay RM, Wu T. Expression of heat shock proteins in myocardium of patients with atrial fibrillation. Cell Stress Chaperones 2007; 12:142-50. [PMID: 17688193 PMCID: PMC1949328 DOI: 10.1379/csc-253r.1] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Atrial fibrillation (AF) is the most common sustained arrhythmia. Because heat shock proteins (Hsp) can protect cells from stress, we compared the levels of Hsp60, Hsp72, Hsc73, and Hsp27 in atrial myocardium from 17 patients with AF (8 paroxysmal and 9 persistent) and 7 controls in sinus rhythm (SR). Hsp60, Hsp72, and Hsc73 levels were not significantly different among the 3 groups. Hsp27 expression was slightly higher in paroxysmal AF than in SR and in persistent AF, and a borderline significant difference (P = 0.064) was seen between the paroxysmal and persistent AF subgroups. Hsp60 levels in the moderate, severe, and profound myolysis groups were significantly lower than the light myolysis group, but no differences were found in other Hsps. In summary, the data indicate that expression of Hsp27 and Hsc73 may be associated with different stages of AF and that Hsp60 also may be associated with the degree of atrial myolysis.
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Affiliation(s)
- Miao Yang
- Institute of Occupational Medicine and Ministry of Education Key Lab for Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hangkong Road 13, Wuhan, Hubei 430030, China
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Lai HC, Liu TJ, Ting CT, Yang JY, Huang L, Wallace D, Kaiser P, Wang PH. Regulation of IGF-I receptor signaling in diabetic cardiac muscle: dysregulation of cytosolic and mitochondria HSP60. Am J Physiol Endocrinol Metab 2007; 292:E292-7. [PMID: 16985260 DOI: 10.1152/ajpendo.00189.2006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Insulin deficiency downregulates HSP60 and IGF-I receptor signaling and disrupts intracellular signaling homeostasis in diabetic cardiac muscle. Our previous studies had shown that IGF-I receptor signaling can be modulated by the abundance of HSP60. Since HSP60 localizes to the cytoplasmic compartment and mitochondria, this study was carried out to determine the distribution of cytosolic and mitochondria HSP60 in diabetic myocardium and to explore whether cytosolic HSP60 can modulate IGF-I receptor signaling in cardiac muscle cells. In streptozotocin-induced diabetes, both the cytosolic and mitochondrial fractions of HSP60 were decreased in the myocardium. Incubating primary cardiomyocytes with insulin leads to increased abundance of HSP60 in the cytosolic and mitochondria compartments. To determine whether cytosolic HSP60 can modulate IGF-I receptor signaling, we used rhodamine 6G to deplete functional mitochondria in cardiomyocytes. In the mitochondria-depleted cells, overexpression of HSP60 with adenoviral vector increased the abundance of IGF-I receptor, enhanced IGF-I-activated receptor phosphorylation, and augmented IGF-I activation of Akt and ERK. Thus overexpressing HSP60 in the cytosolic compartment enhanced IGF-I receptor signaling through upregulation of IGF-I receptor protein. However, IGF-I receptor signaling was significantly reduced in the mitochondria-depleted cells, which suggested that maintaining normal IGF-I receptor signaling in cardiomyocytes required functioning mitochondria. The effect of cytosolic HSP60 involved suppression of ubiquitin conjugation to IGF-I receptor in cardiomyocytes. These data suggest two different mechanisms that can regulate IGF-I signaling, one via cytosolic HSP60 suppression of IGF-I receptor ubiquitination and the other via mitochondria modulation. These findings provide new insight into the regulation of IGF-I signaling in diabetic cardiomyopathy.
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Affiliation(s)
- Hui-Chin Lai
- Dept. of Medicine, Med Sci 1, C240, Irvine, CA 92697, USA
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Dokladny K, Wharton W, Lobb R, Ma TY, Moseley PL. Induction of physiological thermotolerance in MDCK monolayers: contribution of heat shock protein 70. Cell Stress Chaperones 2006; 11:268-75. [PMID: 17009600 PMCID: PMC1576477 DOI: 10.1379/csc-194r.1] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Enhanced survival of both individual cells and whole organisms following a heat stress is termed thermotolerance. In organisms, the maintenance of tissue function rather than the survival of individual cells ultimately determines outcome following thermal challenge. We used MDCK kidney epithelial cells to compare alterations in chaperone activity (as a measure of cellular tolerance) and epithelial barrier function (as a measure of physiological tolerance) after thermal challenge. Quercetin, an inhibitor of heat shock factor-dependent transcriptional activity, both potentiated the effects of heat on naive monolayers and blocked conditioning of monolayers following moderate heat shock, suggesting a central role of heat shock protein (HSP) family members in the maintenance of epithelial integrity. We used MDCK cells that constitutively overexpressed HSP70 to demonstrate 2 functionally distinct components of the response of monolayers to thermal stress. The maintenance of epithelial barrier function during exposure to elevated temperatures is regulated by a complex network of processes that involve the actions of HSP70 but that are independent of alterations in chaperone activity as reflected by changes in the thermal inactivation/refolding of luciferase. In contrast, the restoration of barrier function following a heat stress is directly modulated by HSP70 in a manner that can be fully accounted for by changes in chaperone activity. This study demonstrates an important, albeit complex, protective role for heat shock proteins in the modulation of MDCK epithelial barrier function following a thermal stress.
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Affiliation(s)
- Karol Dokladny
- Department of Internal Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA
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Deocaris CC, Kaul SC, Wadhwa R. On the brotherhood of the mitochondrial chaperones mortalin and heat shock protein 60. Cell Stress Chaperones 2006; 11:116-28. [PMID: 16817317 PMCID: PMC1484513 DOI: 10.1379/csc-144r.1] [Citation(s) in RCA: 128] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The heat shock chaperones mortalin/mitochondrial heat shock protein 70 (mtHsp70) and Hsp60 are found in multiple subcellular sites and function in the folding and intracellular trafficking of many proteins. The chaperoning activity of these 2 proteins involves different structural and functional mechanisms. In spite of providing an excellent model for an evolutionarily conserved molecular "brotherhood", their individual functions, although overlapping, are nonredundant. As they travel to various locations, both chaperones acquire different binding partners and exert a more divergent involvement in tumorigenesis, cellular senescence, and immunology. An understanding of their functional biology may lead to novel designing and development of therapeutic strategies for cancer and aging.
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Affiliation(s)
- Custer C Deocaris
- National Institute of Advanced Industrial Science and Technology, Central 4, 1-1-1 Higashi, Tsukuba Science City 305-8562, Japan
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Ilangovan G, Venkatakrishnan CD, Bratasz A, Osinbowale S, Cardounel AJ, Zweier JL, Kuppusamy P. Heat shock-induced attenuation of hydroxyl radical generation and mitochondrial aconitase activity in cardiac H9c2 cells. Am J Physiol Cell Physiol 2006; 290:C313-24. [PMID: 16162655 DOI: 10.1152/ajpcell.00362.2005] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A mild heat shock (hyperthermia) protects cells from apoptotic and necrotic deaths by inducing overexpression of various heat shock proteins (Hsps). These proteins, in combination with the activation of the nitric oxide synthase (NOS) enzyme, play important roles in the protection of the myocardium against a variety of diseases. In the present work we report that the generation of potent reactive oxygen species (ROS), namely ·OH in cardiac H9c2 cells, is attenuated by heat shock treatment (2 h at 42°C). Western blot analyses showed that heat shock treatment induced overexpression of Hsp70, Hsp60, and Hsp25. The observed ·OH was found to be derived from the superoxide (O2−·) generated by the mitochondria. Whereas the manganese superoxide dismutase (MnSOD) activity was increased in the heat-shocked cells, the mitochondrial aconitase activity was reduced. The mechanism of O2−· conversion into ·OH in mitochondria is proposed as follows. The O2−· leaked from the electron transport chain, oxidatively damages the mitochondrial aconitase, releasing a free Fe2+. The aconitase-released Fe2+combines with H2O2to generate ·OH via a Fenton reaction and the oxidized Fe3+recombines with the inactivated enzyme after being reduced to Fe2+by other cellular reductants, turning it over to be active. However, in heat-shocked cells, because of higher MnSOD activity, the excess H2O2causes irreversible damage to the mitochondrial aconitase enzyme, thus inhibiting its activity. In conclusion, we propose that attenuation of ·OH generation after heat shock treatment might play an important role in reducing the myocardial ischemic injury, observed in heat shock-treated animals.
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Affiliation(s)
- Govindasamy Ilangovan
- Center for Biomedical EPR Spectroscopy and Imaging, Davis Heart and Lung Research Institute and The Division of Cardiovascular Medicine, Department of Internal Medicine, The Ohio State University, Columbus, Ohio 43210, USA.
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