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Zhao X, Xu C, Ding Y, Yan N. The multifaceted functions of NFE2L1 in metabolism and associated disorders. Life Sci 2024; 352:122906. [PMID: 38992575 DOI: 10.1016/j.lfs.2024.122906] [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: 03/27/2024] [Revised: 07/05/2024] [Accepted: 07/08/2024] [Indexed: 07/13/2024]
Abstract
Nuclear factor erythroid 2-related factor 1 (NFE2L1, also known as Nrf1) is a crucial member of the CNC-bZIP subfamily of transcription factors expressed ubiquitously throughout our body. Recent findings have revealed its association with various metabolic processes, encompassing glucose, lipid, and protein metabolism. In the realm of glucose metabolism, NFE2L1 exerts regulatory control by modulating pancreatic β cells and insulin production. It also influences glucose metabolism in liver and the insulin sensitivity of adipose tissue. Regarding lipid metabolism, NFE2L1 governs this process by influencing the expression of specific adipogenic and lipolysis genes in both liver and adipose tissue. Additionally, NFE2L1 regulates specific lipids, such as cholesterol. These involvements underlie various manifestations of NFE2L1 deficiency such as adipocyte hypertrophy, inflammation, and steatohepatitis. In the realm of protein metabolism, NFE2L1 serves as a major transcription factor regulating the 26S proteasome genes expression, which dysfunction has been related with multiple diseases including neurodegenerative diseases, cancers, autoimmune conditions, etc. In this comprehensive review, we summarize the diverse roles that NFE2L1 plays in glucose, lipid, and protein metabolism, as well as its impact on diseases related to these metabolic processes.
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Affiliation(s)
- Xuye Zhao
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, China; Queen Mary College, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330031, China; School of Biological and Biomedical Sciences, Queen Mary University of London, London, United Kingdom
| | - Chang Xu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, China; Queen Mary College, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330031, China; School of Biological and Biomedical Sciences, Queen Mary University of London, London, United Kingdom
| | - Yi Ding
- Department of Spine Surgery, Ganzhou People's Hospital (The Affiliated Ganzhou Hospital of Nanchang University), Ganzhou, Jiangxi Province 341000, China
| | - Nianlong Yan
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, China.
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Xu Q, Kong F, Zhao G, Jin J, Feng S, Li M. USP7 alleviates neuronal inflammation and apoptosis in spinal cord injury via deubiquitinating NRF1/KLF7 axis. Neurol Res 2024:1-10. [PMID: 39007840 DOI: 10.1080/01616412.2024.2376999] [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: 12/28/2023] [Accepted: 07/02/2024] [Indexed: 07/16/2024]
Abstract
BACKGROUND Ubiquitin-specific protease 7 (USP7) has been found to be associated with motor function recovery after spinal cord injury (SCI). Therefore, its role and mechanism in SCI process need further exploration. METHODS SCI rat models were established via performing laminectomy at the T9-T11 spinal vertebrae and cutting spinal cord tissues. SCI cell models were constructed by inducing PC12 cells with lipopolysaccharide (LPS). The protein levels of USP7, nuclear respiratory factor 1 (NRF1), Krüppel-like factor 7 (KLF7) and apoptosis-related markers were detected by western blot. Cell viability and apoptosis were tested by cell counting kit-8 assay and flow cytometry. The contents of inflammatory factors were examined using ELISA. The interaction between NRF1 and USP7 or KLF7 was analyzed by co-immunoprecipitation assay, chromatin immunoprecipitation assay and dual-luciferase reporter assay, respectively. RESULTS USP7 was downregulated in SCI rat models and LPS-induced PC12 cells. Overexpressed USP7 promoted viability, while repressed apoptosis and inflammation in LPS-induced PC12 cells. USP7 could stabilize NRF1 protein expression via deubiquitination, and NRF1 knockdown reversed the protective effect of USP7 against LPS-induced PC12 cell injury. NRF1 is bound to KLF7 promoter to enhance its transcription. NRF1 overexpression inhibited LPS-induced PC12 cell inflammation and apoptosis via increasing KLF7 expression. CONCLUSION USP7 alleviated inflammation and apoptosis in LPS-induced PC12 cells via NRF1/KLF7 axis, indicating that targeting of USP7/NRF1/KLF7 axis might be a promising treatment strategy for SCI.
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Affiliation(s)
- Qifei Xu
- Department of Orthopedics, The First People's Hospital of Pingdingshan, Pingdingshan, China
| | - Fanguo Kong
- Department of Orthopedics, Henan Provincial Orthopedic Hospital, Zhengzhou, China
| | - Guanghui Zhao
- Department of Orthopedics, The First People's Hospital of Pingdingshan, Pingdingshan, China
| | - Junwei Jin
- Department of Orthopedics, The First People's Hospital of Pingdingshan, Pingdingshan, China
| | - Shengkai Feng
- Department of Orthopedics, The First People's Hospital of Pingdingshan, Pingdingshan, China
| | - Ming Li
- Department of Orthopedics, The First People's Hospital of Pingdingshan, Pingdingshan, China
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Zhang H, Liu Y, Zhang K, Hong Z, Liu Z, Liu Z, Li G, Xu Y, Pi J, Fu J, Xu Y. Understanding the Transcription Factor NFE2L1/NRF1 from the Perspective of Hallmarks of Cancer. Antioxidants (Basel) 2024; 13:758. [PMID: 39061827 PMCID: PMC11274343 DOI: 10.3390/antiox13070758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Revised: 06/15/2024] [Accepted: 06/17/2024] [Indexed: 07/28/2024] Open
Abstract
Cancer cells subvert multiple properties of normal cells, including escaping strict cell cycle regulation, gaining resistance to cell death, and remodeling the tumor microenvironment. The hallmarks of cancer have recently been updated and summarized. Nuclear factor erythroid 2-related factor 1 (NFE2L1, also named NRF1) belongs to the cap'n'collar (CNC) basic-region leucine zipper (bZIP) family. It acts as a transcription factor and is indispensable for maintaining both cellular homoeostasis and organ integrity during development and growth, as well as adaptive responses to pathophysiological stressors. In addition, NFE2L1 mediates the proteasome bounce-back effect in the clinical proteasome inhibitor therapy of neuroblastoma, multiple myeloma, and triple-negative breast cancer, which quickly induces proteasome inhibitor resistance. Recent studies have shown that NFE2L1 mediates cell proliferation and metabolic reprogramming in various cancer cell lines. We combined the framework provided by "hallmarks of cancer" with recent research on NFE2L1 to summarize the role and mechanism of NFE2L1 in cancer. These ongoing efforts aim to contribute to the development of potential novel cancer therapies that target the NFE2L1 pathway and its activity.
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Affiliation(s)
- Haomeng Zhang
- Key Laboratory of Environmental Stress and Chronic Disease Control and Prevention, Ministry of Education, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital, China Medical University, No. 155 Nanjing North Street, Heping District, Shenyang 110001, China
| | - Yong Liu
- Program of Environmental Toxicology, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Ke Zhang
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital, China Medical University, No. 155 Nanjing North Street, Heping District, Shenyang 110001, China
| | - Zhixuan Hong
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Zongfeng Liu
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital, China Medical University, No. 155 Nanjing North Street, Heping District, Shenyang 110001, China
| | - Zhe Liu
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital, China Medical University, No. 155 Nanjing North Street, Heping District, Shenyang 110001, China
| | - Guichen Li
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital, China Medical University, No. 155 Nanjing North Street, Heping District, Shenyang 110001, China
| | - Yuanyuan Xu
- Key Laboratory of Environmental Stress and Chronic Disease Control and Prevention, Ministry of Education, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
- Laboratory of Chronic Disease and Environmental Genomics, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
- Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Jingbo Pi
- Key Laboratory of Environmental Stress and Chronic Disease Control and Prevention, Ministry of Education, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
- Program of Environmental Toxicology, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
- Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Jingqi Fu
- Key Laboratory of Environmental Stress and Chronic Disease Control and Prevention, Ministry of Education, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Yuanhong Xu
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital, China Medical University, No. 155 Nanjing North Street, Heping District, Shenyang 110001, China
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Ward MA, Vangala JR, Kamber Kaya HE, Byers HA, Hosseini N, Diaz A, Cuervo AM, Kaushik S, Radhakrishnan SK. Transcription factor Nrf1 regulates proteotoxic stress-induced autophagy. J Cell Biol 2024; 223:e202306150. [PMID: 38656405 PMCID: PMC11040505 DOI: 10.1083/jcb.202306150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 02/20/2024] [Accepted: 03/08/2024] [Indexed: 04/26/2024] Open
Abstract
Cells exposed to proteotoxic stress invoke adaptive responses aimed at restoring proteostasis. Our previous studies have established a firm role for the transcription factor Nuclear factor-erythroid derived-2-related factor-1 (Nrf1) in responding to proteotoxic stress elicited by inhibition of cellular proteasome. Following proteasome inhibition, Nrf1 mediates new proteasome synthesis, thus enabling the cells to mitigate the proteotoxic stress. Here, we report that under similar circumstances, multiple components of the autophagy-lysosomal pathway (ALP) were transcriptionally upregulated in an Nrf1-dependent fashion, thus providing the cells with an additional route to cope with proteasome insufficiency. In response to proteasome inhibitors, Nrf1-deficient cells displayed profound defects in invoking autophagy and clearance of aggresomes. This phenomenon was also recapitulated in NGLY1 knockout cells, where Nrf1 is known to be non-functional. Conversely, overexpression of Nrf1 induced ALP genes and endowed the cells with an increased capacity to clear aggresomes. Overall, our results significantly expand the role of Nrf1 in shaping the cellular response to proteotoxic stress.
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Affiliation(s)
- Madison A. Ward
- Department of Pathology, Virginia Commonwealth University, Richmond, VA, USA
| | | | | | - Holly A. Byers
- Department of Pathology, Virginia Commonwealth University, Richmond, VA, USA
| | | | - Antonio Diaz
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Ana Maria Cuervo
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Susmita Kaushik
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Senthil K. Radhakrishnan
- Department of Pathology, Virginia Commonwealth University, Richmond, VA, USA
- Massey Comprehensive Cancer Center, Virginia Commonwealth University, Richmond, VA, USA
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Cai L. Invited Perspective: New Insight into Cadmium-Related Osteoporosis Yields Hope for Prevention and Therapy. ENVIRONMENTAL HEALTH PERSPECTIVES 2024; 132:61301. [PMID: 38896781 PMCID: PMC11218703 DOI: 10.1289/ehp15263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 05/28/2024] [Accepted: 05/30/2024] [Indexed: 06/21/2024]
Affiliation(s)
- Lu Cai
- Pediatric Research Institute, Department of Pediatrics, University of Louisville (U of L) School of Medicine, Louisville, Kentucky, USA
- Department of Radiation Oncology, U of L School of Medicine, Louisville, Kentucky, USA
- Department of Pharmacology and Toxicology, U of L School of Medicine, Louisville, Kentucky, USA
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Kuhlman KR, Cole SW, Tan EN, Swanson JA, Rao U. Childhood Maltreatment and Immune Cell Gene Regulation during Adolescence: Transcriptomics Highlight Non-Classical Monocytes. Biomolecules 2024; 14:220. [PMID: 38397457 PMCID: PMC10886995 DOI: 10.3390/biom14020220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/02/2024] [Accepted: 02/08/2024] [Indexed: 02/25/2024] Open
Abstract
Childhood maltreatment has been repeatedly linked to a higher incidence of health conditions with an underlying proinflammatory component, such as asthma, chronic obstructive pulmonary disease, stroke, and cardiovascular disease. Childhood maltreatment has also been linked to elevated systemic inflammation prior to the onset of disease. However, childhood maltreatment is highly comorbid with other risk factors which have also been linked to inflammation, namely major depression. The present analysis addresses this issue by assessing the association of maltreatment with genome-wide transcriptional profiling of immune cells collected from four orthogonal groups of adolescents (aged 13-17): maltreated and not maltreated in childhood, with and without major depressive disorder. Maltreatment and psychiatric history were determined using semi-structured clinical interviews and cross-validated using self-report questionnaires. Dried whole blood spots were collected from each participant (n = 133) and assayed to determine the extent to which maltreatment in childhood was associated with a higher prevalence of transcriptional activity among differentially expressed genes, specific immune cell subtypes, and up- or down-regulation of genes involved in immune function after accounting for current major depression. Maltreatment was associated with increased interferon regulatory factor (IRF) transcriptional activity (p = 0.03), as well as nuclear factor erythroid-2 related factor 1 (NRF1; p = 0.002) and MAF (p = 0.01) among up-regulated genes, and increased activity of nuclear factor kappa beta (NF-κB) among down-regulated genes (p = 0.01). Non-classical CD16+ monocytes were implicated in both the up- and down-regulated genes among maltreated adolescents. These data provide convergent evidence supporting the role of maltreatment in altering intracellular and molecular markers of immune function, as well as implicate monocyte/macrophage functions as mechanisms through which childhood maltreatment may shape lifelong immune development and function.
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Affiliation(s)
- Kate R. Kuhlman
- Department of Psychological Science, School of Social Ecology, University of California Irvine, 4546 Social & Behavioral Sciences Gateway, Irvine, CA 92697, USA
- Cousins Center for Psychoneuroimmunology, Semel Institute for Neuroscience and Human Behavior, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Steve W. Cole
- Cousins Center for Psychoneuroimmunology, Semel Institute for Neuroscience and Human Behavior, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Ece N. Tan
- Department of Psychiatry & Human Behavior, School of Medicine, University of California Irvine, Irvine, CA 92697, USA
| | - James A. Swanson
- Stritch School of Medicine, Loyola University Chicago, Maywood, IL 60153, USA
| | - Uma Rao
- Department of Psychological Science, School of Social Ecology, University of California Irvine, 4546 Social & Behavioral Sciences Gateway, Irvine, CA 92697, USA
- Department of Psychiatry & Human Behavior, School of Medicine, University of California Irvine, Irvine, CA 92697, USA
- Center for the Neurobiology of Learning and Memory, University of California Irvine, Irvine, CA 92697, USA
- Children’s Hospital of Orange Country (CHOC), Orange, CA 92868, USA
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Ho DV, Suryajaya KG, Manh K, Duong AN, Chan JY. Characterization of NFE2L1-616, an isoform of nuclear factor-erythroid-2 related transcription factor-1 that activates antioxidant response element-regulated genes. Sci Rep 2023; 13:19900. [PMID: 37963997 PMCID: PMC10646089 DOI: 10.1038/s41598-023-47055-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 11/08/2023] [Indexed: 11/16/2023] Open
Abstract
The NFE2L1 transcription factor (aka Nrf1) is a basic leucine zipper protein that performs a critical role in the cellular stress response pathway. Here, we characterized a novel variant of NFE2L1 referred to as NFE2L1-616. The transcript encoding NFE2L1-616 is derived from an intronic promoter, and it has a distinct first exon than other reported full-length NFE2L1 isoforms. The NFE2L1-616 protein constitutively localizes in the nucleus as it lacks the N-terminal amino acid residues that targets other full-length NFE2L1 isoforms to the endoplasmic reticulum. The expression level of NFE2L1-616 is lower than other NFE2L1 isoforms. It is widely expressed across different cell lines and tissues that were examined. NFE2L1-616 showed strong transcriptional activity driving luciferase reporter expression from a promoter containing antioxidant response element. Together, the results suggest that NFE2L1-616 variant can function as a positive regulator in the transcriptional regulation of NFE2L1 responsive genes.
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Affiliation(s)
- Daniel V Ho
- Department of Laboratory Medicine and Pathology, University of California, Irvine, D440 Medical Sciences, Irvine, CA, 92697, USA
| | - Kaylen G Suryajaya
- Department of Laboratory Medicine and Pathology, University of California, Irvine, D440 Medical Sciences, Irvine, CA, 92697, USA
| | - Kaitlyn Manh
- Department of Laboratory Medicine and Pathology, University of California, Irvine, D440 Medical Sciences, Irvine, CA, 92697, USA
| | - Amanda N Duong
- Department of Laboratory Medicine and Pathology, University of California, Irvine, D440 Medical Sciences, Irvine, CA, 92697, USA
| | - Jefferson Y Chan
- Department of Laboratory Medicine and Pathology, University of California, Irvine, D440 Medical Sciences, Irvine, CA, 92697, USA.
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Dey Bhowmik A, Das T, Chattopadhyay A. Chronic exposure to environmentally relevant concentration of fluoride impairs osteoblast's collagen synthesis and matrix mineralization: Involvement of epigenetic regulation in skeletal fluorosis. ENVIRONMENTAL RESEARCH 2023; 236:116845. [PMID: 37558119 DOI: 10.1016/j.envres.2023.116845] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 07/30/2023] [Accepted: 08/05/2023] [Indexed: 08/11/2023]
Abstract
Globally, 200 million people are suffering from toxic manifestations of Fluoride(F), dental and skeletal fluorosis; unfortunately, there is no treatment. To unravel the pathogenesis of skeletal fluorosis, we established fluorosis mice by treating environmentally relevant concentration of F (15 ppm NaF) through drinking water for 4 months. As in skeletal fluorosis, locomotor disability, crippling deformities occur and thus, our hypothesis was F might adversely affects collagen which gives the bone tensile strength. This work inevitably had to be carried out on osteoblast cells, responsible for synthesis, deposition, and mineralization of bone matrix. Isolated osteoblast cells were confirmed by ALP activity and mineralized nodules formation. Expression of collagen Col1a1, Col1a2, COL1A1 was significantly reduced in treated mice. Further, a study revealed the involvement of epigenetic regulation by promoter hypermethylation of Col1a1; expressional alterations of transcription factors, calcium channels and other genes e.g., Cbfa-1, Tgf-β1, Bmp1, Sp1, Sp7, Nf-Kb p65, Bmp-2, Bglap, Gprc6a and Cav1.2 are associated with impairment of collagen synthesis, deposition and decreased mineralization thus, enfeebling bone health. This study indicates the possible association of epigenetic regulation in skeletal fluorosis. However, no association was found between polymorphisms in the Col1a1 (RsaI, HindIII) and Col1a2 (RsaI, HindIII) genes with fluorosis in mice.
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Affiliation(s)
- Arpan Dey Bhowmik
- Department of Zoology, Visva-Bharati, Santiniketan, 731235, West Bengal, India
| | - Tanmoy Das
- Department of Zoology, Visva-Bharati, Santiniketan, 731235, West Bengal, India
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Zhao Q, Zhang C, Zhang X, Wang S, Guo T, Yin Y, Zhang H, Li Z, Si Y, Lu Y, Cheng S, Ding W. ZNF281 inhibits mitochondrial biogenesis to facilitate metastasis of hepatocellular carcinoma. Cell Death Discov 2023; 9:396. [PMID: 37880213 PMCID: PMC10600106 DOI: 10.1038/s41420-023-01691-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 09/25/2023] [Accepted: 10/16/2023] [Indexed: 10/27/2023] Open
Abstract
Zinc finger protein 281 (ZNF281) has been shown to promote tumor progression. However, the underlying mechanism remains to be further elucidated. In this study, ZNF281 knockdown increased the expression of mitochondrial transcription factor A (TFAM) in hepatocellular carcinoma (HCC) cells, accompanied with increment of mitochondrial content, oxygen consumption rate (OCR) and levels of TCA cycle intermetabolites. Mechanistic investigation revealed that ZNF281 suppressed the transcription of TFAM, nuclear respiratory factor 1 (NRF1) and peroxisome proliferator-activated receptor γ coactivator-1α (PGC-1α). Furthermore, ZNF281 interacted with NRF1 and PGC-1α, and was recruited onto the promoter regions of TFAM, TFB1M and TFB2M repressing their expression. Knockdown of TFAM reversed ZNF281 depletion induced up-regulation of mitochondrial biogenesis and function, as well as impaired epithelial mesenchymal transition, invasion and metastasis of HCC cells. Our research uncovered a novel suppressive function of ZNF281 on mitochondrial biogenesis through inhibition of the NRF1/PGC-1α-TFAM axis, which may hold therapeutic potentials for HCC.
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Affiliation(s)
- Qingfang Zhao
- School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
- Cancer Center, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, China
| | - Chenguang Zhang
- School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China.
| | - Xialu Zhang
- School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Shanshan Wang
- Beijing Institute of Hepatology, Beijing You' An Hospital, Capital Medical University, Beijing, 100069, China
| | - Ting Guo
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Division of Gastrointestinal Cancer Translational Research Laboratory, Peking University Cancer Hospital & Institute, Beijing, 100142, China
| | - Yuzhe Yin
- The Sixth Clinical Medical School, Capital Medical University, Beijing, 100069, China
| | - Hui Zhang
- State Key Laboratory of Membrane Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Zhuo Li
- Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Yang Si
- School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Yabin Lu
- School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Shan Cheng
- School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Wei Ding
- School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China.
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Elshani M, Um IH, Leung S, Reynolds PA, Chapman A, Kudsy M, Harrison DJ. Transcription Factor NFE2L1 Decreases in Glomerulonephropathies after Podocyte Damage. Cells 2023; 12:2165. [PMID: 37681897 PMCID: PMC10487238 DOI: 10.3390/cells12172165] [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: 05/19/2023] [Revised: 08/24/2023] [Accepted: 08/26/2023] [Indexed: 09/09/2023] Open
Abstract
Podocyte cellular injury and detachment from glomerular capillaries constitute a critical factor contributing to kidney disease. Notably, transcription factors are instrumental in maintaining podocyte differentiation and homeostasis. This study explores the hitherto uninvestigated expression of Nuclear Factor Erythroid 2-related Factor 1 (NFE2L1) in podocytes. We evaluated the podocyte expression of NFE2L1, Nuclear Factor Erythroid 2-related Factor 2 (NFE2L2), and NAD(P)H:quinone Oxidoreductase (NQO1) in 127 human glomerular disease biopsies using multiplexed immunofluorescence and image analysis. We found that both NFE2L1 and NQO1 expressions were significantly diminished across all observed renal diseases. Furthermore, we exposed human immortalized podocytes and ex vivo kidney slices to Puromycin Aminonucleoside (PAN) and characterized the NFE2L1 protein isoform expression. PAN treatment led to a reduction in the nuclear expression of NFE2L1 in ex vivo kidney slices and podocytes.
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Affiliation(s)
- Mustafa Elshani
- School of Medicine, University of St Andrews, St Andrews KY16 9TF, UK (D.J.H.)
- Pathology, Laboratory Medicine, Royal Infirmary of Edinburgh, Little France, Edinburgh EH16 6NA, UK
- NuCana plc, 3 Lochside Way, Edinburgh EH12 9DT, UK
| | - In Hwa Um
- School of Medicine, University of St Andrews, St Andrews KY16 9TF, UK (D.J.H.)
| | - Steve Leung
- Urology Department, Western General Hospital, Edinburgh EH4 2XU, UK
| | - Paul A. Reynolds
- School of Medicine, University of St Andrews, St Andrews KY16 9TF, UK (D.J.H.)
| | - Alex Chapman
- Urology Department, Victoria Hospital, Hayfield Road, Kirkcaldy KY2 5AH, UK
| | - Mary Kudsy
- School of Medicine, University of St Andrews, St Andrews KY16 9TF, UK (D.J.H.)
| | - David J. Harrison
- School of Medicine, University of St Andrews, St Andrews KY16 9TF, UK (D.J.H.)
- Pathology, Laboratory Medicine, Royal Infirmary of Edinburgh, Little France, Edinburgh EH16 6NA, UK
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11
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Reinal I, Ontoria-Oviedo I, Selva M, Casini M, Peiró-Molina E, Fambuena-Santos C, Climent AM, Balaguer J, Cañete A, Mora J, Raya Á, Sepúlveda P. Modeling Cardiotoxicity in Pediatric Oncology Patients Using Patient-Specific iPSC-Derived Cardiomyocytes Reveals Downregulation of Cardioprotective microRNAs. Antioxidants (Basel) 2023; 12:1378. [PMID: 37507917 PMCID: PMC10376252 DOI: 10.3390/antiox12071378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 06/25/2023] [Accepted: 06/29/2023] [Indexed: 07/30/2023] Open
Abstract
Anthracyclines are widely used in the treatment of many solid cancers, but their efficacy is limited by cardiotoxicity. As the number of pediatric cancer survivors continues to rise, there has been a concomitant increase in people living with anthracycline-induced cardiotoxicity. Accordingly, there is an ongoing need for new models to better understand the pathophysiological mechanisms of anthracycline-induced cardiac damage. Here we generated induced pluripotent stem cells (iPSCs) from two pediatric oncology patients with acute cardiotoxicity induced by anthracyclines and differentiated them to ventricular cardiomyocytes (hiPSC-CMs). Comparative analysis of these cells (CTX hiPSC-CMs) and control hiPSC-CMs revealed that the former were significantly more sensitive to cell injury and death from the anthracycline doxorubicin (DOX), as measured by viability analysis, cleaved caspase 3 expression, oxidative stress, genomic and mitochondrial damage and sarcomeric disorganization. The expression of several mRNAs involved in structural integrity and inflammatory response were also differentially affected by DOX. Functionally, optical mapping analysis revealed higher arrythmia complexity after DOX treatment in CTX iPSC-CMs. Finally, using a panel of previously identified microRNAs associated with cardioprotection, we identified lower levels of miR-22-3p, miR-30b-5p, miR-90b-3p and miR-4732-3p in CTX iPSC-CMs under basal conditions. Our study provides valuable phenotype information for cellular models of cardiotoxicity and highlights the significance of using patient-derived cardiomyocytes for studying the associated pathogenic mechanisms.
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Affiliation(s)
- Ignacio Reinal
- Regenerative Medicine and Heart Transplantation Unit, Health Research Institute Hospital la Fe, 46026 Valencia, Spain
| | - Imelda Ontoria-Oviedo
- Regenerative Medicine and Heart Transplantation Unit, Health Research Institute Hospital la Fe, 46026 Valencia, Spain
| | - Marta Selva
- Regenerative Medicine and Heart Transplantation Unit, Health Research Institute Hospital la Fe, 46026 Valencia, Spain
| | - Marilù Casini
- Regenerative Medicine and Heart Transplantation Unit, Health Research Institute Hospital la Fe, 46026 Valencia, Spain
| | - Esteban Peiró-Molina
- Regenerative Medicine and Heart Transplantation Unit, Health Research Institute Hospital la Fe, 46026 Valencia, Spain
- Hospital Universitari i Politècnic La Fe, 46026 Valencia, Spain
| | | | - Andreu M Climent
- ITACA Institute, Universitat Politècnica de València, 46026 Valencia, Spain
| | - Julia Balaguer
- Hospital Universitari i Politècnic La Fe, 46026 Valencia, Spain
- Transtational Research in Cancer Unit-Pediatric Oncology, Health Research Institute Hospital La Fe, 46026 Valencia, Spain
| | - Adela Cañete
- Hospital Universitari i Politècnic La Fe, 46026 Valencia, Spain
- Transtational Research in Cancer Unit-Pediatric Oncology, Health Research Institute Hospital La Fe, 46026 Valencia, Spain
- Department of Pediatrics, University of Valencia, 46010 Valencia, Spain
| | - Jaume Mora
- Oncology Service, Hospital Sant Joan de Déu, 08950 Esplugues de Llobregat, Spain
| | - Ángel Raya
- Regenerative Medicine Program, Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, 08908 Barcelona, Spain
- Program for Clinical Translation of Regenerative Medicine in Catalonia-P-[CMRC], L'Hospitalet de Llobregat, 08908 Barcelona, Spain
- Centro de Investigación Biomédica en Red Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Carlos III Institute of Health, 28029 Madrid, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), 08010 Barcelona, Spain
| | - Pilar Sepúlveda
- Regenerative Medicine and Heart Transplantation Unit, Health Research Institute Hospital la Fe, 46026 Valencia, Spain
- Hospital Universitari i Politècnic La Fe, 46026 Valencia, Spain
- Centro de Investigación Biomédica en Red Enfermedades Cardiovasculares (CIBERCV), Carlos III Institute of Health, 28029 Madrid, Spain
- Department of Pathology, University of Valencia, 46010 Valencia, Spain
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12
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Cook J, Greene ES, Ramser A, Mullenix G, Dridi JS, Liyanage R, Wideman R, Dridi S. Comparative- and network-based proteomic analysis of bacterial chondronecrosis with osteomyelitis lesions in broiler's proximal tibiae identifies new molecular signatures of lameness. Sci Rep 2023; 13:5947. [PMID: 37045932 PMCID: PMC10097873 DOI: 10.1038/s41598-023-33060-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 04/06/2023] [Indexed: 04/14/2023] Open
Abstract
Bacterial Chondronecrosis with Osteomyelitis (BCO) is a specific cause of lameness in commercial fast-growing broiler (meat-type) chickens and represents significant economic, health, and wellbeing burdens. However, the molecular mechanisms underlying the pathogenesis remain poorly understood. This study represents the first comprehensive characterization of the proximal tibia proteome from healthy and BCO chickens. Among a total of 547 proteins identified, 222 were differentially expressed (DE) with 158 up- and 64 down-regulated proteins in tibia of BCO vs. normal chickens. Biological function analysis using Ingenuity Pathways showed that the DE proteins were associated with a variety of diseases including cell death, organismal injury, skeletal and muscular disorder, immunological and inflammatory diseases. Canonical pathway and protein-protein interaction network analysis indicated that these DE proteins were involved in stress response, unfolded protein response, ribosomal protein dysfunction, and actin cytoskeleton signaling. Further, we identified proteins involved in bone resorption (osteoclast-stimulating factor 1, OSFT1) and bone structural integrity (collagen alpha-2 (I) chain, COL2A1), as potential key proteins involved in bone attrition. These results provide new insights by identifying key protein candidates involved in BCO and will have significant impact in understanding BCO pathogenesis.
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Affiliation(s)
- Jennifer Cook
- Department of Poultry Science, University of Arkansas, 1260 W. Maple Street, Fayetteville, AR, 72701, USA
| | - Elizabeth S Greene
- Department of Poultry Science, University of Arkansas, 1260 W. Maple Street, Fayetteville, AR, 72701, USA
| | - Alison Ramser
- Department of Poultry Science, University of Arkansas, 1260 W. Maple Street, Fayetteville, AR, 72701, USA
| | - Garrett Mullenix
- Department of Poultry Science, University of Arkansas, 1260 W. Maple Street, Fayetteville, AR, 72701, USA
| | - Jalila S Dridi
- École Universitaire de Kinésithérapie, Université d'Orléans, Rue de Chartres, 45100, Orléans, France
| | - Rohana Liyanage
- Department of Poultry Science, University of Arkansas, 1260 W. Maple Street, Fayetteville, AR, 72701, USA
| | - Robert Wideman
- Department of Poultry Science, University of Arkansas, 1260 W. Maple Street, Fayetteville, AR, 72701, USA
| | - Sami Dridi
- Department of Poultry Science, University of Arkansas, 1260 W. Maple Street, Fayetteville, AR, 72701, USA.
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13
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Wang X, Wong CC, Chen H, Fu K, Shi L, Su H, Guo S, Gou H, Hu X, Zhang L, Ji J, Yu J. The N 6-methyladenine DNA demethylase ALKBH1 promotes gastric carcinogenesis by disrupting NRF1 binding capacity. Cell Rep 2023; 42:112279. [PMID: 36989111 DOI: 10.1016/j.celrep.2023.112279] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 01/20/2023] [Accepted: 03/03/2023] [Indexed: 03/30/2023] Open
Abstract
DNA N6-methyladenine (6mA) is an epigenetic modification that regulates various biological processes. Here, we show that gastric cancer (GC) cells and tumors display a marked reduction in 6mA levels compared with normal gastric tissues and cells. 6mA is abundant in the surrounding transcription start sites and occurs at consensus motifs. Among the 6mA regulators, ALKBH1, a demethylase, is significantly overexpressed in GC tissues compared with adjacent normal tissues. Moreover, high ALKBH1 expression is associated with poor survival of patients with GC. ALKBH1 knockout in mice impairs chemically induced gastric carcinogenesis. Mechanistically, ALKBH1 mediates DNA 6mA demethylation to repress gene expression. In particular, the 6mA sites are enriched in NRF1 binding sequences and targeted for demethylation by ALKBH1. ALKBH1-induced 6mA demethylation inhibits NRF1-driven transcription of downstream targets, including multiple genes involved in the AMP-activated protein kinase (AMPK) signaling pathway. Accordingly, ALKBH1 suppresses AMPK signaling, causing a metabolic shift toward the Warburg effect, which facilitates tumorigenesis.
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Affiliation(s)
- Xiaohong Wang
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China; Key Laboratory of Carcinogenesis and Translational Research, Peking University Cancer Hospital and Institute, Beijing, China
| | - Chi Chun Wong
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Huarong Chen
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Kaili Fu
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Lingxue Shi
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Hao Su
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Shang Guo
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Hongyan Gou
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Xiaoxu Hu
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Lianhai Zhang
- Key Laboratory of Carcinogenesis and Translational Research, Peking University Cancer Hospital and Institute, Beijing, China
| | - Jiafu Ji
- Key Laboratory of Carcinogenesis and Translational Research, Peking University Cancer Hospital and Institute, Beijing, China.
| | - Jun Yu
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China.
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14
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Zhang X, Fang B, Huang YF. Transcription factor binding sites are frequently under accelerated evolution in primates. Nat Commun 2023; 14:783. [PMID: 36774380 PMCID: PMC9922303 DOI: 10.1038/s41467-023-36421-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 01/31/2023] [Indexed: 02/13/2023] Open
Abstract
Recent comparative genomic studies have identified many human accelerated elements (HARs) with elevated substitution rates in the human lineage. However, it remains unknown to what extent transcription factor binding sites (TFBSs) are under accelerated evolution in humans and other primates. Here, we introduce two pooling-based phylogenetic methods with dramatically enhanced sensitivity to examine accelerated evolution in TFBSs. Using these new methods, we show that more than 6000 TFBSs annotated in the human genome have experienced accelerated evolution in Hominini, apes, and Old World monkeys. Although these TFBSs individually show relatively weak signals of accelerated evolution, they collectively are more abundant than HARs. Also, we show that accelerated evolution in Pol III binding sites may be driven by lineage-specific positive selection, whereas accelerated evolution in other TFBSs might be driven by nonadaptive evolutionary forces. Finally, the accelerated TFBSs are enriched around developmental genes, suggesting that accelerated evolution in TFBSs may drive the divergence of developmental processes between primates.
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Affiliation(s)
- Xinru Zhang
- Department of Biology, Pennsylvania State University, University Park, PA, 16802, USA. .,Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA, 16802, USA. .,Bioinformatics and Genomics Graduate Program, Pennsylvania State University, University Park, PA, 16802, USA.
| | - Bohao Fang
- Department of Organismic and Evolutionary Biology and the Museum of Comparative Zoology, Harvard University, Boston, MA, 02135, USA
| | - Yi-Fei Huang
- Department of Biology, Pennsylvania State University, University Park, PA, 16802, USA. .,Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA, 16802, USA.
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15
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Shaito A, Al-Mansoob M, Ahmad SM, Haider MZ, Eid AH, Posadino AM, Pintus G, Giordo R. Resveratrol-Mediated Regulation of Mitochondria Biogenesis-associated Pathways in Neurodegenerative Diseases: Molecular Insights and Potential Therapeutic Applications. Curr Neuropharmacol 2023; 21:1184-1201. [PMID: 36237161 PMCID: PMC10286596 DOI: 10.2174/1570159x20666221012122855] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 09/22/2022] [Accepted: 10/09/2022] [Indexed: 11/22/2022] Open
Abstract
Neurodegenerative disorders include different neurological conditions that affect nerve cells, causing the progressive loss of their functions and ultimately leading to loss of mobility, coordination, and mental functioning. The molecular mechanisms underpinning neurodegenerative disease pathogenesis are still unclear. Nonetheless, there is experimental evidence to demonstrate that the perturbation of mitochondrial function and dynamics play an essential role. In this context, mitochondrial biogenesis, the growth, and division of preexisting mitochondria, by controlling mitochondria number, plays a vital role in maintaining proper mitochondrial mass and function, thus ensuring efficient synaptic activity and brain function. Mitochondrial biogenesis is tightly associated with the control of cell division and variations in energy demand in response to extracellular stimuli; therefore, it may represent a promising therapeutic target for developing new curative approaches to prevent or counteract neurodegenerative disorders. Accordingly, several inducers of mitochondrial biogenesis have been proposed as pharmacological targets for treating diverse central nervous system conditions. The naturally occurring polyphenol resveratrol has been shown to promote mitochondrial biogenesis in various tissues, including the nervous tissue, and an ever-growing number of studies highlight its neurotherapeutic potential. Besides preventing cognitive impairment and neurodegeneration through its antioxidant and anti-inflammatory properties, resveratrol has been shown to be able to enhance mitochondria biogenesis by acting on its main effectors, including PGC-1α, SIRT1, AMPK, ERRs, TERT, TFAM, NRF-1 and NRF-2. This review aims to present and discuss the current findings concerning the impact of resveratrol on the machinery and main effectors modulating mitochondrial biogenesis in the context of neurodegenerative diseases.
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Affiliation(s)
- Abdullah Shaito
- Biomedical Research Center, College of Medicine, Qatar University, Doha, 2713, Qatar
- Department of Biomedical Sciences, College of Health Sciences, Qatar University, Doha, 2713, Qatar
| | - Maryam Al-Mansoob
- Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, Doha, 2713, Qatar
| | - Salma M.S. Ahmad
- Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, Doha, 2713, Qatar
| | | | - Ali H. Eid
- Department of Basic Medical Sciences, College of Medicine, QU Health, Qatar University, Doha, 2713, Qatar
| | - Anna Maria Posadino
- Department of Biomedical Sciences, University of Sassari, 07100, Sassari, Italy
| | - Gianfranco Pintus
- Department of Biomedical Sciences, University of Sassari, 07100, Sassari, Italy
- Department of Medical Laboratory Sciences, College of Health Sciences and Sharjah Institute for Medical Research, University of Sharjah, University City Rd, Sharjah, 27272, United Arab Emirates
| | - Roberta Giordo
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, 505055, United Arab Emirates
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16
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Russell TM, Richardson DR. The good Samaritan glutathione-S-transferase P1: An evolving relationship in nitric oxide metabolism mediated by the direct interactions between multiple effector molecules. Redox Biol 2022; 59:102568. [PMID: 36563536 PMCID: PMC9800640 DOI: 10.1016/j.redox.2022.102568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 11/22/2022] [Accepted: 12/01/2022] [Indexed: 12/23/2022] Open
Abstract
Glutathione-S-transferases (GSTs) are phase II detoxification isozymes that conjugate glutathione (GSH) to xenobiotics and also suppress redox stress. It was suggested that GSTs have evolved not to enhance their GSH affinity, but to better interact with and metabolize cytotoxic nitric oxide (NO). The interactions between NO and GSTs involve their ability to bind and store NO as dinitrosyl-dithiol iron complexes (DNICs) within cells. Additionally, the association of GSTP1 with inducible nitric oxide synthase (iNOS) results in its inhibition. The function of NO in vasodilation together with studies associating GSTM1 or GSTT1 null genotypes with preeclampsia, additionally suggests an intriguing connection between NO and GSTs. Furthermore, suppression of c-Jun N-terminal kinase (JNK) activity occurs upon increased levels of GSTP1 or NO that decreases transcription of JNK target genes such as c-Jun and c-Fos, which inhibit apoptosis. This latter effect is mediated by the direct association of GSTs with MAPK proteins. GSTP1 can also inhibit nuclear factor kappa B (NF-κB) signaling through its interactions with IKKβ and Iκα, resulting in decreased iNOS expression and the stimulation of apoptosis. It can be suggested that the inhibitory activity of GSTP1 within the JNK and NF-κB pathways may be involved in crosstalk between survival and apoptosis pathways and modulating NO-mediated ROS generation. These studies highlight an innovative role of GSTs in NO metabolism through their interaction with multiple effector proteins, with GSTP1 functioning as a "good Samaritan" within each pathway to promote favorable cellular conditions and NO levels.
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Affiliation(s)
- Tiffany M. Russell
- Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, Nagoya, 466-8550, Japan
| | - Des R. Richardson
- Centre for Cancer Cell Biology and Drug Discovery, Griffith Institute for Drug Discovery, Griffith University, Nathan, 4111, Australia,Corresponding author. Centre for Cancer Cell Biology, Griffith Institute for Drug Discovery, Griffith University, Nathan, Brisbane, 4111, Queensland, Australia.
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17
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Grün B, Tirre M, Pyschny S, Singh V, Kehl HG, Jux C, Drenckhahn JD. Inhibition of mitochondrial respiration has fundamentally different effects on proliferation, cell survival and stress response in immature versus differentiated cardiomyocyte cell lines. Front Cell Dev Biol 2022; 10:1011639. [PMID: 36211452 PMCID: PMC9538794 DOI: 10.3389/fcell.2022.1011639] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 09/07/2022] [Indexed: 11/30/2022] Open
Abstract
Myocardial tissue homeostasis is critically important for heart development, growth and function throughout the life course. The loss of cardiomyocytes under pathological conditions ultimately leads to cardiovascular disease due to the limited regenerative capacity of the postnatal mammalian heart. Inhibition of electron transport along the mitochondrial respiratory chain causes cellular stress characterized by ATP depletion as well as excessive generation of reactive oxygen species. Adult cardiomyocytes are highly susceptible to mitochondrial dysfunction whereas embryonic cardiomyocytes in the mouse heart have been shown to be resistant towards mitochondrial complex III inhibition. To functionally characterize the molecular mechanisms mediating this stress tolerance, we used H9c2 cells as an in vitro model for immature cardiomyoblasts and treated them with various inhibitors of mitochondrial respiration. The complex I inhibitor rotenone rapidly induced cell cycle arrest and apoptosis whereas the complex III inhibitor antimycin A (AMA) had no effect on proliferation and only mildly increased cell death. HL-1 cells, a differentiated and contractile cardiomyocyte cell line from mouse atrium, were highly susceptible to AMA treatment evident by cell cycle arrest and death. AMA induced various stress response mechanisms in H9c2 cells, such as the mitochondrial unfolded protein response (UPRmt), integrated stress response (ISR), heat shock response (HSR) and antioxidative defense. Inhibition of the UPR, ISR and HSR by siRNA mediated knock down of key components does not impair growth of H9c2 cells upon AMA treatment. In contrast, knock down of NRF2, an important transcriptional regulator of genes involved in detoxification of reactive oxygen species, reduces growth of H9c2 cells upon AMA treatment. Various approaches to activate cell protective mechanisms and alleviate oxidative stress in HL-1 cells failed to rescue them from AMA induced growth arrest and death. In summary, these data show that the site of electron transport interruption along the mitochondrial respiratory chain determines cell fate in immature cardiomyoblasts. The study furthermore points to fundamental differences in stress tolerance and cell survival between immature and differentiated cardiomyocytes which may underlie the growth plasticity of embryonic cardiomyocytes during heart development but also highlight the obstacles of cardioprotective therapies in the adult heart.
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Affiliation(s)
- Bent Grün
- Department of Pediatric Cardiology, University Hospital Münster, Münster, Germany
| | - Michaela Tirre
- Department of Pediatric Cardiology, University Hospital Münster, Münster, Germany
| | - Simon Pyschny
- Department of Pediatric Cardiology, University Hospital Münster, Münster, Germany
| | - Vijay Singh
- Department of Pediatric Hematology and Oncology, Justus Liebig University, Gießen, Germany
| | - Hans-Gerd Kehl
- Department of Pediatric Cardiology, University Hospital Münster, Münster, Germany
| | - Christian Jux
- Department of Pediatric Cardiology, University Hospital Münster, Münster, Germany
- Department of Pediatric Cardiology, Justus Liebig University, Gießen, Germany
| | - Jörg-Detlef Drenckhahn
- Department of Pediatric Cardiology, University Hospital Münster, Münster, Germany
- Department of Pediatric Cardiology, Justus Liebig University, Gießen, Germany
- *Correspondence: Jörg-Detlef Drenckhahn,
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18
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Zhang Y, Xu Y, Lu W, Li J, Yu S, Brown EJ, Stanger BZ, Rabinowitz JD, Yang X. G6PD-mediated increase in de novo NADP + biosynthesis promotes antioxidant defense and tumor metastasis. SCIENCE ADVANCES 2022; 8:eabo0404. [PMID: 35857842 PMCID: PMC9299539 DOI: 10.1126/sciadv.abo0404] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 06/03/2022] [Indexed: 05/11/2023]
Abstract
Metastasizing cancer cells are able to withstand high levels of oxidative stress through mechanisms that are poorly understood. Here, we show that under various oxidative stress conditions, pancreatic cancer cells markedly expand NADPH and NADP+ pools. This expansion is due to up-regulation of glucose-6-phosphate dehydrogenase (G6PD), which stimulates the cytoplasmic nicotinamide adenine dinucleotide kinase (NADK1) to produce NADP+ while converting NADP+ to NADPH. G6PD is activated by the transcription factor TAp73, which is, in turn, regulated by two pathways. Nuclear factor-erythroid 2 p45-related factor-2 suppresses expression of the ubiquitin ligase PIRH2, stabilizing the TAp73 protein. Checkpoint kinases 1/2 and E2F1 induce expression of the TAp73 gene. Levels of G6PD and its upstream activators are elevated in metastatic pancreatic cancer. Knocking down G6PD impedes pancreatic cancer metastasis, whereas forced G6PD expression promotes it. These findings reveal an intracellular network that maintains redox homeostasis through G6PD-mediated increase in de novo NADP+ biosynthesis, which may be co-opted by tumor cells to enable metastasis.
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Affiliation(s)
- Yang Zhang
- Department of Cancer Biology, University of Pennsylvania, Philadelphia, PA 19104, USA
- Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Yi Xu
- Department of Cancer Biology, University of Pennsylvania, Philadelphia, PA 19104, USA
- Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Wenyun Lu
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08540, USA
- Department of Chemistry, Princeton University, Princeton, NJ 08540, USA
| | - Jinyang Li
- Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, PA 19104, USA
- Department of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
- Department of Cell and Developmental Biology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Sixiang Yu
- Department of Cancer Biology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Eric J. Brown
- Department of Cancer Biology, University of Pennsylvania, Philadelphia, PA 19104, USA
- Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Ben Z. Stanger
- Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, PA 19104, USA
- Department of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
- Department of Cell and Developmental Biology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Joshua D. Rabinowitz
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08540, USA
- Department of Chemistry, Princeton University, Princeton, NJ 08540, USA
| | - Xiaolu Yang
- Department of Cancer Biology, University of Pennsylvania, Philadelphia, PA 19104, USA
- Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, PA 19104, USA
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19
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Sukhovskaya IV, Kantserova NP, Lysenko LA, Morozov AA. Taxifolin Modulates Transcriptomic Response to Heat Stress in Rainbow Trout, Oncorhynchus mykiss. Animals (Basel) 2022; 12:ani12101321. [PMID: 35625167 PMCID: PMC9137817 DOI: 10.3390/ani12101321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/18/2022] [Accepted: 05/20/2022] [Indexed: 12/10/2022] Open
Abstract
Taxifolin is a natural flavonoid known for its antioxidant, anti-inflammatory, and antiproliferative effects on animals. In this work, we have studied the effect of this compound on rainbow trout, Oncorhynchus mykiss, a major object of aquaculture, under slowly increasing ambient temperature and Gyrodactylus flatworm infection. Transcriptomic profiling of liver samples performed by using the Illumina HiSeq 2500 sequencing platform shows that a combined taxifolin/heat treatment, unlike heat treatment alone, downregulates the production of isopentenyl diphosphate, likely affecting the production of cholesterol and other sterols. Taxifolin treatment also modulates multiple apoptosis regulators and affects the expression of HSPs in response to increasing temperature. On the other hand, the expression of antioxidant enzymes in response to heat is not significantly affected by taxifolin. As for the Gyrodactylus infection, the parasite load is not affected by taxifolin treatment, although it was lower in the high-temperature group. Parasite load also did not induce a statistically significant transcriptomic response within the no heat/no taxifolin group.
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Affiliation(s)
- Irina V. Sukhovskaya
- Institute of Biology of the Karelian Research Centre of the Russian Academy of Sciences (IB KarRC RAS), 11 Pushkinskaya Street, 185910 Petrozavodsk, Russia; (I.V.S.); (L.A.L.)
| | - Nadezhda P. Kantserova
- Institute of Biology of the Karelian Research Centre of the Russian Academy of Sciences (IB KarRC RAS), 11 Pushkinskaya Street, 185910 Petrozavodsk, Russia; (I.V.S.); (L.A.L.)
- Correspondence:
| | - Liudmila A. Lysenko
- Institute of Biology of the Karelian Research Centre of the Russian Academy of Sciences (IB KarRC RAS), 11 Pushkinskaya Street, 185910 Petrozavodsk, Russia; (I.V.S.); (L.A.L.)
| | - Alexey A. Morozov
- Limnological Institute of the Siberian Branch of the Russian Academy of Sciences (LIN SB RAS), 3 Ulan-Batorskaya Street, 664033 Irkutsk, Russia;
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20
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Tao LC, Wang TT, Zheng L, Hua F, Li JJ. The Role of Mitochondrial Biogenesis Dysfunction in Diabetic Cardiomyopathy. Biomol Ther (Seoul) 2022; 30:399-408. [PMID: 35410981 PMCID: PMC9424338 DOI: 10.4062/biomolther.2021.192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 01/28/2022] [Accepted: 02/22/2022] [Indexed: 11/26/2022] Open
Abstract
Diabetic cardiomyopathy (DCM) is described as abnormalities of myocardial structure and function in diabetic patients without other well-established cardiovascular factors. Although multiple pathological mechanisms involving in this unique myocardial disorder, mitochondrial dysfunction may play an important role in its development of DCM. Recently, considerable progresses have suggested that mitochondrial biogenesis is a tightly controlled process initiating mitochondrial generation and maintaining mitochondrial function, appears to be associated with DCM. Nonetheless, an outlook on the mechanisms and clinical relevance of dysfunction in mitochondrial biogenesis among patients with DCM is not completely understood. In this review, hence, we will summarize the role of mitochondrial biogenesis dysfunction in the development of DCM, especially the molecular underlying mechanism concerning the signaling pathways beyond the stimulation and inhibition of mitochondrial biogenesis. Additionally, the evaluations and potential therapeutic strategies regarding mitochondrial biogenesis dysfunction in DCM is also presented.
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Affiliation(s)
- Li-Chan Tao
- The Third Affiliated Hospital of Soochow University, Juqian Road, Changzhou 213000, China
| | - Ting-Ting Wang
- The Third Affiliated Hospital of Soochow University, Juqian Road, Changzhou 213000, China
| | - Lu Zheng
- The Third Affiliated Hospital of Soochow University, Juqian Road, Changzhou 213000, China
| | - Fei Hua
- The Third Affiliated Hospital of Soochow University, Juqian Road, Changzhou 213000, China
| | - Jian-Jun Li
- State Key Laboratory of Cardiovascular Diseases, Fu Wai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
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21
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Effect of Feed Supplementation with Bacillus coagulans on Nrf Gene Family Expression in Common Carp (Cyprinus carpio) under Long-Term Exposure to Cd2+. FISHES 2022. [DOI: 10.3390/fishes7010048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
Nuclear factor-E2-related factor (Nrf) belongs to the Cap ‘n’ collar basic leucine zipper (CNC-bZIP) family, which plays an important role in the resistance to oxidative stress in the body. In this study, 12 Nrf genes were identified in the common carp genome database. Comparative genomic analysis showed that the Nrf genes of common carp had significant amplification, confirming that the common carp had experienced four genome-wide replication events. Phylogenetic analysis showed that all common carp Nrf clustered with scleractinian fish Nrf, indicating that they were highly conserved during evolution. In addition, tissue distribution results showed that most Nrf genes had a broad tissue distribution but exhibited tissue-specific expression patterns, demonstrating functional differences after WGD events. At 30 and 60 days of Cd2+ stress, most of the Nrf genes showed an increase in expression compared with the control group, indicating that they played a key role in the organism’s response to oxidative stress. To find a suitable concentration of Bacillus coagulans to activate the Nrf genes, we added three different concentrations (2.0 × 107 CFU/g, 2.0 × 108 CFU/g, and 2.0 × 109 CFU/g) of B. coagulans into the feed and defined them as L1, L2, and L3 groups, respectively. We investigated the effect of different concentrations of B. coagulans in the feed on the expression level of Nrf genes in the intestine of common carp under Cd2+ stress at 30 and 60 days. The results showed that, compared with the control/stress group, the expression of different Nrf genes was improved to varying degrees at three concentrations, and the effect of the L2 group (2.0 × 108 CFU/g) was the best. This suggests that the L2 group is the optimum concentration for activating Nrf gene expression when subjected to heavy metal Cd2+ stress and may act as an activation switch with a prominent role in the body’s resistance to oxidative stress and immune response.
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22
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Quigley M, Rieger S, Capobianco E, Wang Z, Zhao H, Hewison M, Lisse TS. Vitamin D Modulation of Mitochondrial Oxidative Metabolism and mTOR Enforces Stress Adaptations and Anticancer Responses. JBMR Plus 2022; 6:e10572. [PMID: 35079680 PMCID: PMC8771003 DOI: 10.1002/jbm4.10572] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/30/2021] [Accepted: 10/08/2021] [Indexed: 01/13/2023] Open
Abstract
The relationship between the active form of vitamin D3 (1,25-dihydroxyvitamin D, 1,25(OH)2D) and reactive oxygen species (ROS), two integral signaling molecules of the cell, is poorly understood. This is striking, given that both factors are involved in cancer cell regulation and metabolism. Mitochondria (mt) dysfunction is one of the main drivers of cancer, producing more mitochondria, higher cellular energy, and ROS that can enhance oxidative stress and stress tolerance responses. To study the effects of 1,25(OH)2D on metabolic and mt dysfunction, we used the vitamin D receptor (VDR)-sensitive MG-63 osteosarcoma cell model. Using biochemical approaches, 1,25(OH)2D decreased mt ROS levels, membrane potential (ΔΨmt), biogenesis, and translation, while enforcing endoplasmic reticulum/mitohormetic stress adaptive responses. Using a mitochondria-focused transcriptomic approach, gene set enrichment and pathway analyses show that 1,25(OH)2D lowered mt fusion/fission and oxidative phosphorylation (OXPHOS). By contrast, mitophagy, ROS defense, and epigenetic gene regulation were enhanced after 1,25(OH)2D treatment, as well as key metabolic enzymes that regulate fluxes of substrates for cellular architecture and a shift toward non-oxidative energy metabolism. ATACseq revealed putative oxi-sensitive and tumor-suppressing transcription factors that may regulate important mt functional genes such as the mTORC1 inhibitor, DDIT4/REDD1. DDIT4/REDD1 was predominantly localized to the outer mt membrane in untreated MG-63 cells yet sequestered in the cytoplasm after 1,25(OH)2D and rotenone treatments, suggesting a level of control by membrane depolarization to facilitate its cytoplasmic mTORC1 inhibitory function. The results show that 1,25(OH)2D activates distinct adaptive metabolic responses involving mitochondria to regain redox balance and control the growth of osteosarcoma cells. © 2021 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Mikayla Quigley
- Biology DepartmentUniversity of MiamiCoral GablesFLUSA
- Dana Farber Cancer InstituteBostonMAUSA
| | - Sandra Rieger
- Biology DepartmentUniversity of MiamiCoral GablesFLUSA
- Sylvester Comprehensive Cancer Center, Miller School of MedicineUniversity of MiamiMiamiFLUSA
| | - Enrico Capobianco
- Institute for Data Science and ComputingUniversity of MiamiCoral GablesFLUSA
| | - Zheng Wang
- Department of Computer ScienceUniversity of MiamiCoral GablesFLUSA
| | - Hengguang Zhao
- Department of DermatologyThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Martin Hewison
- Institute of Metabolism and Systems ResearchUniversity of BirminghamBirminghamUK
| | - Thomas S Lisse
- Biology DepartmentUniversity of MiamiCoral GablesFLUSA
- Sylvester Comprehensive Cancer Center, Miller School of MedicineUniversity of MiamiMiamiFLUSA
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23
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Role of Nrf2 in Pancreatic Cancer. Antioxidants (Basel) 2021; 11:antiox11010098. [PMID: 35052602 PMCID: PMC8773052 DOI: 10.3390/antiox11010098] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/26/2021] [Accepted: 12/28/2021] [Indexed: 12/18/2022] Open
Abstract
Pancreatic tumors are a serious health problem with a 7% mortality rate worldwide. Inflammatory processes and oxidative stress play important roles in the development of pancreatic diseases/cancer. To maintain homeostasis, a balance between free radicals and the antioxidant system is essential. Nuclear Factor Erythroid 2-Related Factor 2/NFE2L2 (Nrf2) and its negative regulator Kelch-Like ECH-Associated Protein 1 (Keap1) provide substantial protection against damage induced by oxidative stress, and a growing body of evidence points to the canonical and noncanonical Nrf2 signaling pathway as a pharmacological target in the treatment of pancreatic diseases. In this review, we present updated evidence on the activation of the Nrf2 signaling pathway and its importance in pancreatic cancer. Our review covers potential modulators of canonical and noncanonical pathway modulation mechanisms that may have a positive effect on the therapeutic response. Finally, we describe some interesting recent discoveries of novel treatments related to the antioxidant system for pancreatic cancer, including natural or synthetic compounds with therapeutic properties.
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24
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Boas SM, Joyce KL, Cowell RM. The NRF2-Dependent Transcriptional Regulation of Antioxidant Defense Pathways: Relevance for Cell Type-Specific Vulnerability to Neurodegeneration and Therapeutic Intervention. Antioxidants (Basel) 2021; 11:antiox11010008. [PMID: 35052512 PMCID: PMC8772787 DOI: 10.3390/antiox11010008] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/09/2021] [Accepted: 12/14/2021] [Indexed: 12/11/2022] Open
Abstract
Oxidative stress has been implicated in the etiology and pathobiology of various neurodegenerative diseases. At baseline, the cells of the nervous system have the capability to regulate the genes for antioxidant defenses by engaging nuclear factor erythroid 2 (NFE2/NRF)-dependent transcriptional mechanisms, and a number of strategies have been proposed to activate these pathways to promote neuroprotection. Here, we briefly review the biology of the transcription factors of the NFE2/NRF family in the brain and provide evidence for the differential cellular localization of NFE2/NRF family members in the cells of the nervous system. We then discuss these findings in the context of the oxidative stress observed in two neurodegenerative diseases, Parkinson's disease (PD) and amyotrophic lateral sclerosis (ALS), and present current strategies for activating NFE2/NRF-dependent transcription. Based on the expression of the NFE2/NRF family members in restricted populations of neurons and glia, we propose that, when designing strategies to engage these pathways for neuroprotection, the relative contributions of neuronal and non-neuronal cell types to the overall oxidative state of tissue should be considered, as well as the cell types which have the greatest intrinsic capacity for producing antioxidant enzymes.
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Affiliation(s)
- Stephanie M. Boas
- Department of Neuroscience, Southern Research, 2000 9th Avenue South, Birmingham, AL 35205, USA; (S.M.B.); (K.L.J.)
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, 1720 2nd Avenue South, Birmingham, AL 35294, USA
| | - Kathlene L. Joyce
- Department of Neuroscience, Southern Research, 2000 9th Avenue South, Birmingham, AL 35205, USA; (S.M.B.); (K.L.J.)
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, 1720 2nd Avenue South, Birmingham, AL 35294, USA
| | - Rita M. Cowell
- Department of Neuroscience, Southern Research, 2000 9th Avenue South, Birmingham, AL 35205, USA; (S.M.B.); (K.L.J.)
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, 1720 2nd Avenue South, Birmingham, AL 35294, USA
- Correspondence:
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25
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Liu F, Ma M, Gao A, Ma F, Ma G, Liu P, Jia C, Wang Y, Donahue K, Zhang S, Ong IM, Keles S, Li L, Xu W. PKM2-TMEM33 axis regulates lipid homeostasis in cancer cells by controlling SCAP stability. EMBO J 2021; 40:e108065. [PMID: 34487377 PMCID: PMC8591543 DOI: 10.15252/embj.2021108065] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 07/31/2021] [Accepted: 08/04/2021] [Indexed: 02/01/2023] Open
Abstract
The pyruvate kinase M2 isoform (PKM2) is preferentially expressed in cancer cells to regulate anabolic metabolism. Although PKM2 was recently reported to regulate lipid homeostasis, the molecular mechanism remains unclear. Herein, we discovered an ER transmembrane protein 33 (TMEM33) as a downstream effector of PKM2 that regulates activation of SREBPs and lipid metabolism. Loss of PKM2 leads to up-regulation of TMEM33, which recruits RNF5, an E3 ligase, to promote SREBP-cleavage activating protein (SCAP) degradation. TMEM33 is transcriptionally regulated by nuclear factor erythroid 2-like 1 (NRF1), whose cleavage and activation are controlled by PKM2 levels. Total plasma cholesterol levels are elevated by either treatment with PKM2 tetramer-promoting agent TEPP-46 or by global PKM2 knockout in mice, highlighting the essential function of PKM2 in lipid metabolism. Although depletion of PKM2 decreases cancer cell growth, global PKM2 knockout accelerates allografted tumor growth. Together, our findings reveal the cell-autonomous and systemic effects of PKM2 in lipid homeostasis and carcinogenesis, as well as TMEM33 as a bona fide regulator of lipid metabolism.
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Affiliation(s)
- Fabao Liu
- McArdle Laboratory for Cancer ResearchUniversity of Wisconsin‐MadisonMadisonWIUSA
| | - Min Ma
- School of PharmacyUniversity of Wisconsin‐MadisonMadisonWIUSA
| | - Ang Gao
- McArdle Laboratory for Cancer ResearchUniversity of Wisconsin‐MadisonMadisonWIUSA
| | - Fengfei Ma
- School of PharmacyUniversity of Wisconsin‐MadisonMadisonWIUSA
- Present address:
Protein Sciences, Discovery BiologicsMerck & Co., Inc.South San FranciscoCAUSA
| | - Gui Ma
- McArdle Laboratory for Cancer ResearchUniversity of Wisconsin‐MadisonMadisonWIUSA
| | - Peng Liu
- Department of Biostatistics and Medical InformaticsUniversity of Wisconsin‐MadisonMadisonWIUSA
- UW Carbone Cancer CenterSchool of Medicine and Public HealthUniversity of Wisconsin‐MadisonMadisonWIUSA
| | - Chenxi Jia
- School of PharmacyUniversity of Wisconsin‐MadisonMadisonWIUSA
- Present address:
State Key Laboratory of ProteomicsNational Center for Protein Sciences‐BeijingBeijing Proteome Research CenterBeijing Institute of Radiation MedicineBeijingChina
| | - Yidan Wang
- McArdle Laboratory for Cancer ResearchUniversity of Wisconsin‐MadisonMadisonWIUSA
| | - Kristine Donahue
- McArdle Laboratory for Cancer ResearchUniversity of Wisconsin‐MadisonMadisonWIUSA
| | - Shengjie Zhang
- McArdle Laboratory for Cancer ResearchUniversity of Wisconsin‐MadisonMadisonWIUSA
| | - Irene M Ong
- Department of Biostatistics and Medical InformaticsUniversity of Wisconsin‐MadisonMadisonWIUSA
- UW Carbone Cancer CenterSchool of Medicine and Public HealthUniversity of Wisconsin‐MadisonMadisonWIUSA
| | - Sunduz Keles
- Department of StatisticsUniversity of Wisconsin‐MadisonMadisonWIUSA
| | - Lingjun Li
- School of PharmacyUniversity of Wisconsin‐MadisonMadisonWIUSA
- Department of ChemistryUniversity of Wisconsin‐MadisonMadisonWIUSA
| | - Wei Xu
- McArdle Laboratory for Cancer ResearchUniversity of Wisconsin‐MadisonMadisonWIUSA
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26
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Gómez X, Sanon S, Zambrano K, Asquel S, Bassantes M, Morales JE, Otáñez G, Pomaquero C, Villarroel S, Zurita A, Calvache C, Celi K, Contreras T, Corrales D, Naciph MB, Peña J, Caicedo A. Key points for the development of antioxidant cocktails to prevent cellular stress and damage caused by reactive oxygen species (ROS) during manned space missions. NPJ Microgravity 2021; 7:35. [PMID: 34556658 PMCID: PMC8460669 DOI: 10.1038/s41526-021-00162-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 08/03/2021] [Indexed: 02/08/2023] Open
Abstract
Exposure to microgravity and ionizing radiation during spaceflight missions causes excessive reactive oxygen species (ROS) production that contributes to cellular stress and damage in astronauts. Average spaceflight mission time is expected to lengthen as humanity aims to visit other planets. However, longer missions or spaceflights will undoubtedly lead to an increment in microgravity, ionizing radiation and ROS production. Strategies to minimize ROS damage are necessary to maintain the health of astronauts, future space colonists, and tourists during and after spaceflight missions. An antioxidant cocktail formulated to prevent or mitigate ROS damage during space exploration could help maintain the health of space explorers. We propose key points to consider when developing an antioxidant cocktail. We discuss how ROS damages our body and organs, the genetic predisposition of astronauts to its damage, characteristics and evidence of the effectiveness of antioxidants to combat excess ROS, differences in drug metabolism when on Earth and in space that could modify antioxidant effects, and the characteristics and efficacy of common antioxidants. Based on this information we propose a workflow for assessing astronaut resistance to ROS damage, infight monitoring of ROS production, and an antioxidant cocktail. Developing an antioxidant cocktail represents a big challenge to translate current medical practices from an Earth setting to space. The key points presented in this review could promote the development of different antioxidant formulations to maintain space explorers' health in the future.
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Affiliation(s)
- Xavier Gómez
- Universidad San Francisco de Quito USFQ, Colegio de Ciencias de la Salud, Escuela de Medicina, Quito, Ecuador
- Universidad San Francisco de Quito USFQ, Instituto de Investigaciones en Biomedicina iBioMed, Quito, Ecuador
- Mito-Act Research Consortium, Quito, Ecuador
| | - Serena Sanon
- Universidad San Francisco de Quito USFQ, Instituto de Investigaciones en Biomedicina iBioMed, Quito, Ecuador
- Cornell University, Ithaca, NY, USA
- Mito-Act Research Consortium, Quito, Ecuador
| | - Kevin Zambrano
- Universidad San Francisco de Quito USFQ, Colegio de Ciencias de la Salud, Escuela de Medicina, Quito, Ecuador
- Universidad San Francisco de Quito USFQ, Instituto de Investigaciones en Biomedicina iBioMed, Quito, Ecuador
- Mito-Act Research Consortium, Quito, Ecuador
- School for Mental Health and Neuroscience (MHeNs), Maastricht University, Maastricht, The Netherlands
| | - Samira Asquel
- Universidad San Francisco de Quito USFQ, Colegio de Ciencias de la Salud, Escuela de Medicina, Quito, Ecuador
| | - Mariuxi Bassantes
- Universidad San Francisco de Quito USFQ, Colegio de Ciencias de la Salud, Escuela de Medicina, Quito, Ecuador
| | - Julián E Morales
- Universidad San Francisco de Quito USFQ, Colegio de Ciencias de la Salud, Escuela de Medicina, Quito, Ecuador
| | - Gabriela Otáñez
- Universidad San Francisco de Quito USFQ, Colegio de Ciencias de la Salud, Escuela de Medicina, Quito, Ecuador
| | - Core Pomaquero
- Universidad San Francisco de Quito USFQ, Colegio de Ciencias de la Salud, Escuela de Medicina, Quito, Ecuador
| | - Sarah Villarroel
- Universidad San Francisco de Quito USFQ, Colegio de Ciencias de la Salud, Escuela de Medicina, Quito, Ecuador
| | - Alejandro Zurita
- Universidad San Francisco de Quito USFQ, Colegio de Ciencias de la Salud, Escuela de Medicina, Quito, Ecuador
| | - Carlos Calvache
- Universidad San Francisco de Quito USFQ, Colegio de Ciencias de la Salud, Escuela de Medicina, Quito, Ecuador
| | - Kathlyn Celi
- Universidad San Francisco de Quito USFQ, Colegio de Ciencias de la Salud, Escuela de Medicina, Quito, Ecuador
| | - Terry Contreras
- Universidad San Francisco de Quito USFQ, Colegio de Ciencias de la Salud, Escuela de Medicina, Quito, Ecuador
| | - Dylan Corrales
- Universidad San Francisco de Quito USFQ, Colegio de Ciencias de la Salud, Escuela de Medicina, Quito, Ecuador
| | - María Belén Naciph
- Universidad San Francisco de Quito USFQ, Colegio de Ciencias de la Salud, Escuela de Medicina, Quito, Ecuador
| | - José Peña
- Universidad San Francisco de Quito USFQ, Colegio de Ciencias de la Salud, Escuela de Medicina, Quito, Ecuador
| | - Andrés Caicedo
- Universidad San Francisco de Quito USFQ, Colegio de Ciencias de la Salud, Escuela de Medicina, Quito, Ecuador.
- Universidad San Francisco de Quito USFQ, Instituto de Investigaciones en Biomedicina iBioMed, Quito, Ecuador.
- Mito-Act Research Consortium, Quito, Ecuador.
- Sistemas Médicos SIME, Universidad San Francisco de Quito USFQ, Quito, Ecuador.
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27
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Cui M, Atmanli A, Morales MG, Tan W, Chen K, Xiao X, Xu L, Liu N, Bassel-Duby R, Olson EN. Nrf1 promotes heart regeneration and repair by regulating proteostasis and redox balance. Nat Commun 2021; 12:5270. [PMID: 34489413 PMCID: PMC8421386 DOI: 10.1038/s41467-021-25653-w] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 08/20/2021] [Indexed: 12/13/2022] Open
Abstract
Following injury, cells in regenerative tissues have the ability to regrow. The mechanisms whereby regenerating cells adapt to injury-induced stress conditions and activate the regenerative program remain to be defined. Here, using the mammalian neonatal heart regeneration model, we show that Nrf1, a stress-responsive transcription factor encoded by the Nuclear Factor Erythroid 2 Like 1 (Nfe2l1) gene, is activated in regenerating cardiomyocytes. Genetic deletion of Nrf1 prevented regenerating cardiomyocytes from activating a transcriptional program required for heart regeneration. Conversely, Nrf1 overexpression protected the adult mouse heart from ischemia/reperfusion (I/R) injury. Nrf1 also protected human induced pluripotent stem cell-derived cardiomyocytes from doxorubicin-induced cardiotoxicity and other cardiotoxins. The protective function of Nrf1 is mediated by a dual stress response mechanism involving activation of the proteasome and redox balance. Our findings reveal that the adaptive stress response mechanism mediated by Nrf1 is required for neonatal heart regeneration and confers cardioprotection in the adult heart.
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Affiliation(s)
- Miao Cui
- Department of Molecular Biology, the Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Senator Paul D. Wellstone Muscular Dystrophy Specialized Research Center, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Ayhan Atmanli
- Department of Molecular Biology, the Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Senator Paul D. Wellstone Muscular Dystrophy Specialized Research Center, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Maria Gabriela Morales
- Department of Molecular Biology, the Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Senator Paul D. Wellstone Muscular Dystrophy Specialized Research Center, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Wei Tan
- Department of Molecular Biology, the Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Senator Paul D. Wellstone Muscular Dystrophy Specialized Research Center, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Kenian Chen
- Quantitative Biomedical Research Center, Department of Population & Data Sciences and Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Xue Xiao
- Quantitative Biomedical Research Center, Department of Population & Data Sciences and Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Lin Xu
- Quantitative Biomedical Research Center, Department of Population & Data Sciences and Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Ning Liu
- Department of Molecular Biology, the Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Senator Paul D. Wellstone Muscular Dystrophy Specialized Research Center, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Rhonda Bassel-Duby
- Department of Molecular Biology, the Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Senator Paul D. Wellstone Muscular Dystrophy Specialized Research Center, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Eric N Olson
- Department of Molecular Biology, the Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA.
- Senator Paul D. Wellstone Muscular Dystrophy Specialized Research Center, University of Texas Southwestern Medical Center, Dallas, TX, USA.
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28
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Razmara P, Imbery JJ, Koide E, Helbing CC, Wiseman SB, Gauthier PT, Bray DF, Needham M, Haight T, Zovoilis A, Pyle GG. Mechanism of copper nanoparticle toxicity in rainbow trout olfactory mucosa. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 284:117141. [PMID: 33901984 DOI: 10.1016/j.envpol.2021.117141] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 04/09/2021] [Accepted: 04/12/2021] [Indexed: 06/12/2023]
Abstract
Chemosensory perception is crucial for fish reproduction and survival. Direct contact of olfactory neuroepithelium to the surrounding environment makes it vulnerable to contaminants in aquatic ecosystems. Copper nanoparticles (CuNPs), which are increasingly used in commercial and domestic applications due their exceptional properties, can impair fish olfactory function. However, the molecular events underlying olfactory toxicity of CuNPs are largely unexplored. Our results suggested that CuNPs were bioavailable to olfactory mucosal cells. Using RNA-seq, we compared the effect of CuNPs and copper ions (Cu2+) on gene transcript profiles of rainbow trout (Oncorhynchus mykiss) olfactory mucosa. The narrow overlap in differential gene expression between the CuNP- and Cu2+-exposed fish revealed that these two contaminants exert their effects through distinct mechanisms. We propose a transcript-based conceptual model that shows that olfactory signal transduction, calcium homeostasis, and synaptic vesicular signaling were affected by CuNPs in the olfactory sensory neurons (OSNs). Neuroregenerative pathways were also impaired by CuNPs. In contrast, Cu2+ did not induce toxicity pathways and rather upregulated regeneration pathways. Both Cu treatments reduced immune system pathway transcripts. However, suppression of transcripts that were associated with inflammatory signaling was only observed with CuNPs. Neither oxidative stress nor apoptosis were triggered by Cu2+ or CuNPs in mucosal cells. Dysregulation of transcripts that regulate function, maintenance, and reestablishment of damaged olfactory mucosa represents critical mechanisms of toxicity of CuNPs. The loss of olfaction by CuNPs may impact survival of rainbow trout and impose an ecological risk to fish populations in contaminated environments.
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Affiliation(s)
- Parastoo Razmara
- Department of Biological Sciences, University of Lethbridge, Lethbridge, Alberta, Canada.
| | - Jacob J Imbery
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia, Canada
| | - Emily Koide
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia, Canada
| | - Caren C Helbing
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia, Canada
| | - Steve B Wiseman
- Department of Biological Sciences, University of Lethbridge, Lethbridge, Alberta, Canada
| | - Patrick T Gauthier
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Douglas F Bray
- Canadian Center for Behavioral Neuroscience, Department of Neuroscience, University of Lethbridge, Lethbridge, Alberta, Canada
| | - Maurice Needham
- Canadian Center for Behavioral Neuroscience, Department of Neuroscience, University of Lethbridge, Lethbridge, Alberta, Canada
| | - Travis Haight
- Department of Chemistry and Biochemistry, University of Lethbridge, Lethbridge, Alberta, Canada
| | - Athanasios Zovoilis
- Department of Chemistry and Biochemistry, University of Lethbridge, Lethbridge, Alberta, Canada
| | - Gregory G Pyle
- Department of Biological Sciences, University of Lethbridge, Lethbridge, Alberta, Canada
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29
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Jiménez-Uribe AP, Bellido B, Aparicio-Trejo OE, Tapia E, Sánchez-Lozada LG, Hernández-Santos JA, Fernández-Valverde F, Hernández-Cruz EY, Orozco-Ibarra M, Pedraza-Chaverri J. Temporal characterization of mitochondrial impairment in the unilateral ureteral obstruction model in rats. Free Radic Biol Med 2021; 172:358-371. [PMID: 34175439 DOI: 10.1016/j.freeradbiomed.2021.06.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 05/31/2021] [Accepted: 06/21/2021] [Indexed: 12/13/2022]
Abstract
Renal fibrosis is a well-known mechanism that favors chronic kidney disease (CKD) development in obstructive nephropathy, a significant pathology worldwide. Fibrosis induction involves several pathways, and although mitochondrial alterations have recently emerged as a critical factor that triggers renal damage in the obstructed kidney, the temporal mitochondrial alterations during the fibrotic induction remain unexplored. Therefore, in this work, we evaluated the time course of mitochondrial mass and bioenergetics alterations induced by a unilateral ureteral obstruction (UUO), a widely used model to study the mechanism involved in kidney fibrosis induction and progression. Our results show a marked reduction in mitochondrial oxidative phosphorylation (OXPHOS) in the obstructed kidney on days 7 to 28 of obstruction without significant mitochondrial coupling changes. Besides, we observed that mitochondrial mass was reduced, probably due to decreased biogenesis and mitophagy induction. OXPHOS impairment was associated with decreased mitochondrial biogenesis markers, the peroxisome proliferator-activated receptor γ co-activator-1alpha (PGC-1α), and nuclear respiratory factor 1 (NRF1); and also, with the induction of mitophagy in a PTEN-induced kinase 1 (PINK1) and Parkin independent way. It is concluded that the impairment of OXPHOS capacity may be explained by the reduction in mitochondrial biogenesis and the induction of mitophagy during fibrotic progression.
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Affiliation(s)
| | - Belen Bellido
- Facultad de Química, Departamento de Biología, Universidad Nacional Autónoma de México, CDMX 04510, Mexico
| | | | - Edilia Tapia
- Departmento de Patofisiología Cardio-renal, Instituto Nacional de Cardiología "Ignacio Chávez", Mexico City 14080, Mexico
| | - Laura Gabriela Sánchez-Lozada
- Departmento de Patofisiología Cardio-renal, Instituto Nacional de Cardiología "Ignacio Chávez", Mexico City 14080, Mexico
| | - José Antonio Hernández-Santos
- Laboratorio de Neurobiología Molecular y Celular, Instituto Nacional de Neurología y Neurocirugía, Manuel Velasco Suárez, Av. Insurgentes Sur # 3877, La Fama, Alcaldía Tlalpan, CP 14269, Ciudad de México, Mexico
| | - Francisca Fernández-Valverde
- Laboratorio de Patología Experimental, Instituto Nacional de Neurología y Neurocirugía, Manuel Velasco Suárez, Av. Insurgentes Sur # 3877, La Fama, Alcaldía Tlalpan, CP 14269, Ciudad de México, Mexico
| | | | - Marisol Orozco-Ibarra
- Laboratorio de Neurobiología Molecular y Celular, Instituto Nacional de Neurología y Neurocirugía, Manuel Velasco Suárez, Av. Insurgentes Sur # 3877, La Fama, Alcaldía Tlalpan, CP 14269, Ciudad de México, Mexico
| | - José Pedraza-Chaverri
- Facultad de Química, Departamento de Biología, Universidad Nacional Autónoma de México, CDMX 04510, Mexico.
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Lei F, Lei T, Huang Y, Yang M, Liao M, Huang W. Radio-Susceptibility of Nasopharyngeal Carcinoma: Focus on Epstein- Barr Virus, MicroRNAs, Long Non-Coding RNAs and Circular RNAs. Curr Mol Pharmacol 2021; 13:192-205. [PMID: 31880267 DOI: 10.2174/1874467213666191227104646] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 11/22/2019] [Accepted: 12/29/2019] [Indexed: 02/07/2023]
Abstract
Nasopharyngeal carcinoma (NPC) is a type of head and neck cancer. As a neoplastic disorder, NPC is a highly malignant squamous cell carcinoma that is derived from the nasopharyngeal epithelium. NPC is radiosensitive; radiotherapy or radiotherapy combining with chemotherapy are the main treatment strategies. However, both modalities are usually accompanied by complications and acquired resistance to radiotherapy is a significant impediment to effective NPC therapy. Therefore, there is an urgent need to discover effective radio-sensitization and radio-resistance biomarkers for NPC. Recent studies have shown that Epstein-Barr virus (EBV)-encoded products, microRNAs (miRNAs), long non-coding RNAs (lncRNAs) and circular RNAs (circRNAs), which share several common signaling pathways, can function in radio-related NPC cells or tissues. Understanding these interconnected regulatory networks will reveal the details of NPC radiation sensitivity and resistance. In this review, we discuss and summarize the specific molecular mechanisms of NPC radio-sensitization and radio-resistance, focusing on EBV-encoded products, miRNAs, lncRNAs and circRNAs. This will provide a foundation for the discovery of more accurate, effective and specific markers related to NPC radiotherapy. EBVencoded products, miRNAs, lncRNAs and circRNAs have emerged as crucial molecules mediating the radio-susceptibility of NPC. This understanding will improve the clinical application of markers and inform the development of novel therapeutics for NPC.
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Affiliation(s)
- Fanghong Lei
- Cancer Research Institute, Hengyang Medical College of University of South China; Hunan Province Key Laboratory of Tumor Cellular & Molecular Pathology (2016TP1015), Hengyang 421001, Hunan Province, China
| | - Tongda Lei
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, 300060, China
| | - Yun Huang
- Cancer Research Institute, Hengyang Medical College of University of South China; Hunan Province Key Laboratory of Tumor Cellular & Molecular Pathology (2016TP1015), Hengyang 421001, Hunan Province, China
| | - Mingxiu Yang
- Cancer Research Institute, Hengyang Medical College of University of South China; Hunan Province Key Laboratory of Tumor Cellular & Molecular Pathology (2016TP1015), Hengyang 421001, Hunan Province, China
| | - Mingchu Liao
- Department of Oncology, The First Affiliated Hospital of University of South China, Hengyang 421001, Hunan Province, China
| | - Weiguo Huang
- Cancer Research Institute, Hengyang Medical College of University of South China; Hunan Province Key Laboratory of Tumor Cellular & Molecular Pathology (2016TP1015), Hengyang 421001, Hunan Province, China
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Ren S, Bian Y, Hou Y, Wang Z, Zuo Z, Liu Z, Teng Y, Fu J, Wang H, Xu Y, Zhang Q, Chen Y, Pi J. The roles of NFE2L1 in adipocytes: Structural and mechanistic insight from cell and mouse models. Redox Biol 2021; 44:102015. [PMID: 34058615 PMCID: PMC8170497 DOI: 10.1016/j.redox.2021.102015] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 05/07/2021] [Accepted: 05/16/2021] [Indexed: 12/12/2022] Open
Abstract
Adipocytes play pivotal roles in maintaining energy homeostasis by storing lipids in adipose tissue (AT), regulating the flux of lipids between AT and the circulation in response to the body's energy requirements and secreting a variety of hormones, cytokines and other factors. Proper AT development and function ensure overall metabolic health. Nuclear factor erythroid 2-related factor 1 (NFE2L1, also known as NRF1) belongs to the CNC-bZIP family and plays critical roles in regulating a wide range of essential cellular functions and varies stress responses in many cells and tissues. Human and rodent Nfe2l1 genes can be transcribed into multiple splice variants resulting in various protein isoforms, which may be further modified by a variety of post-translational mechanisms. While the long isoforms of NFE2L1 have been established as master regulators of cellular adaptive antioxidant response and proteasome homeostasis, the exact tissue distribution and physiological function of NFE2L1 isoforms, the short isoforms in particular, are still under intense investigation. With regard to key roles of NFE2L1 in adipocytes, emerging data indicates that deficiency of Nfe2l1 results in aberrant adipogenesis and impaired AT functioning. Intriguingly, a single nucleotide polymorphism (SNP) of the human NFE2L1 gene is associated with obesity. In this review, we summarize the most significant findings regarding the specific roles of the multiple isoforms of NFE2L1 in AT formation and function. We highlight that NFE2L1 plays a fundamental regulatory role in the expression of multiple genes that are crucial to AT metabolism and function and thus could be an important target to improve disease states involving aberrant adipose plasticity and lipid homeostasis.
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Affiliation(s)
- Suping Ren
- Program of Environmental Toxicology, School of Public Health, China Medical University. No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, China
| | - Yiying Bian
- Program of Environmental Toxicology, School of Public Health, China Medical University. No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, China
| | - Yongyong Hou
- Program of Environmental Toxicology, School of Public Health, China Medical University. No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, China
| | - Zhendi Wang
- Program of Environmental Toxicology, School of Public Health, China Medical University. No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, China
| | - Zhuo Zuo
- Program of Environmental Toxicology, School of Public Health, China Medical University. No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, China
| | - Zhiyuan Liu
- Program of Environmental Toxicology, School of Public Health, China Medical University. No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, China
| | - Yue Teng
- Department of Hepatopancreatobiliary Surgery, The Forth Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Jingqi Fu
- Program of Environmental Toxicology, School of Public Health, China Medical University. No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, China
| | - Huihui Wang
- Group of Chronic Disease and Environmental Genomics, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, China
| | - Yuanyuan Xu
- Group of Chronic Disease and Environmental Genomics, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, China
| | - Qiang Zhang
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, GA, 30322, USA
| | - Yanyan Chen
- The First Affiliated Hospital, China Medical University, No. 155 Nanjing North Road, Heping Area, Shenyang, Liaoning, 110001, China.
| | - Jingbo Pi
- Program of Environmental Toxicology, School of Public Health, China Medical University. No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, China.
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Kim JS, Jung YH, Lee HJ, Chae CW, Choi GE, Lim JR, Kim SY, Lee JE, Han HJ. Melatonin activates ABCA1 via the BiP/NRF1 pathway to suppress high-cholesterol-induced apoptosis of mesenchymal stem cells. Stem Cell Res Ther 2021; 12:114. [PMID: 33546749 PMCID: PMC7866631 DOI: 10.1186/s13287-021-02181-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 01/21/2021] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Retarded wound healing in patients with obesity contributes to a risk of complications associated with vascular insufficiency and oxidative stress. The high cholesterol levels of patients with obesity are associated with apoptosis of engrafted umbilical cord blood-derived mesenchymal stem cells (UCB-MSCs). Melatonin contributes to the prevention of cholesterol accumulation in patients with obesity via a mechanism that is poorly understood. We therefore investigated the regulatory mechanism of melatonin in cholesterol-induced apoptosis. METHODS The protective effects of melatonin on cholesterol-induced apoptosis were investigated in UCB-MSCs. We used a mouse model of induced obesity to show that melatonin treatment restored the survival rate of transplanted UCB-MSCs and their wound-healing capacity. The mean values of the treatment groups were compared with those of the control group using Student's t test, and differences among three or more groups were analyzed using one-way analysis of variance with Dunnett's multiple comparison test. RESULTS Melatonin treatment increased the expression of ATP-binding cassette subfamily A member 1 (ABCA1), which reduced cholesterol accumulation and cholesterol-induced apoptosis. The mouse skin wound healing model showed that melatonin treatment restored the survival rate of transplanted UCB-MSCs and the wound-healing capacity of obese mice. Melatonin inhibited the expression of binding immunoglobulin protein (BiP) through the regulation of MT2/Sp1-dependent microRNA-597-5p. Melatonin decreased the co-localization of BiP with nuclear factor erythroid 2-related factor 1 (NRF1), which resulted in increased ABCA1 expression. CONCLUSION Melatonin induced the efflux of intracellular cholesterol through ABCA1 to decrease apoptosis of UCB-MSCs via an MT2-dependent BiP/NRF1 pathway.
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Affiliation(s)
- Jun Sung Kim
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science, and BK21 Four Future Veterinary Medicine Leading Education & Research Center, Seoul National University, Seoul, 08826, Republic of Korea
| | - Young Hyun Jung
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science, and BK21 Four Future Veterinary Medicine Leading Education & Research Center, Seoul National University, Seoul, 08826, Republic of Korea
| | - Hyun Jik Lee
- Laboratory of Veterinary Physiology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, 28644, Republic of Korea.,Institute for Stem Cell & Regenerative Medicine (ISCRM), Chungbuk National University, Cheongju, Chungbuk, 28644, Republic of Korea
| | - Chang Woo Chae
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science, and BK21 Four Future Veterinary Medicine Leading Education & Research Center, Seoul National University, Seoul, 08826, Republic of Korea
| | - Gee Euhn Choi
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science, and BK21 Four Future Veterinary Medicine Leading Education & Research Center, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jae Ryong Lim
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science, and BK21 Four Future Veterinary Medicine Leading Education & Research Center, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seo Yihl Kim
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science, and BK21 Four Future Veterinary Medicine Leading Education & Research Center, Seoul National University, Seoul, 08826, Republic of Korea
| | - Joo Eun Lee
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science, and BK21 Four Future Veterinary Medicine Leading Education & Research Center, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ho Jae Han
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science, and BK21 Four Future Veterinary Medicine Leading Education & Research Center, Seoul National University, Seoul, 08826, Republic of Korea.
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Olonisakin TF, Suber T, Gonzalez-Ferrer S, Xiong Z, Peñaloza HF, van der Geest R, Xiong Y, Osei-Hwedieh DO, Tejero J, Rosengart MR, Mars WM, Van Tyne D, Perlegas A, Brashears S, Kim-Shapiro DB, Gladwin MT, Bachman MA, Hod EA, St. Croix C, Tyurina YY, Kagan VE, Mallampalli RK, Ray A, Ray P, Lee JS. Stressed erythrophagocytosis induces immunosuppression during sepsis through heme-mediated STAT1 dysregulation. J Clin Invest 2021; 131:137468. [PMID: 32941182 PMCID: PMC7773401 DOI: 10.1172/jci137468] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 09/09/2020] [Indexed: 01/16/2023] Open
Abstract
Macrophages are main effectors of heme metabolism, increasing transiently in the liver during heightened disposal of damaged or senescent RBCs (sRBCs). Macrophages are also essential in defense against microbial threats, but pathological states of heme excess may be immunosuppressive. Herein, we uncovered a mechanism whereby an acute rise in sRBC disposal by macrophages led to an immunosuppressive phenotype after intrapulmonary Klebsiella pneumoniae infection characterized by increased extrapulmonary bacterial proliferation and reduced survival from sepsis in mice. The impaired immunity to K. pneumoniae during heightened sRBC disposal was independent of iron acquisition by bacterial siderophores, in that K. pneumoniae mutants lacking siderophore function recapitulated the findings observed with the WT strain. Rather, sRBC disposal induced a liver transcriptomic profile notable for suppression of Stat1 and IFN-related responses during K. pneumoniae sepsis. Excess heme handling by macrophages recapitulated STAT1 suppression during infection that required synergistic NRF1 and NRF2 activation but was independent of heme oxygenase-1 induction. Whereas iron was dispensable, the porphyrin moiety of heme was sufficient to mediate suppression of STAT1-dependent responses in human and mouse macrophages and promoted liver dissemination of K. pneumoniae in vivo. Thus, cellular heme metabolism dysfunction negatively regulated the STAT1 pathway, with implications in severe infection.
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Affiliation(s)
- Tolani F. Olonisakin
- Medical Scientist Training Program,,Acute Lung Injury Center of Excellence,,Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine
| | - Tomeka Suber
- Acute Lung Injury Center of Excellence,,Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine
| | - Shekina Gonzalez-Ferrer
- Acute Lung Injury Center of Excellence,,Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine
| | - Zeyu Xiong
- Acute Lung Injury Center of Excellence,,Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine
| | - Hernán F. Peñaloza
- Acute Lung Injury Center of Excellence,,Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine
| | - Rick van der Geest
- Acute Lung Injury Center of Excellence,,Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine
| | - Yuting Xiong
- Acute Lung Injury Center of Excellence,,Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine
| | | | - Jesús Tejero
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine,,Vascular Medicine Institute
| | | | | | - Daria Van Tyne
- Division of Infectious Diseases, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Andreas Perlegas
- Department of Physics and The Translational Science Center, Wake Forest University, Winston-Salem, North Carolina, USA
| | - Samuel Brashears
- Department of Physics and The Translational Science Center, Wake Forest University, Winston-Salem, North Carolina, USA
| | - Daniel B. Kim-Shapiro
- Department of Physics and The Translational Science Center, Wake Forest University, Winston-Salem, North Carolina, USA
| | - Mark T. Gladwin
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine,,Vascular Medicine Institute
| | - Michael A. Bachman
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Eldad A. Hod
- Department of Pathology and Cell Biology, Columbia University Medical Center-New York Presbyterian Hospital, New York, New York, USA
| | | | - Yulia Y. Tyurina
- Department of Environmental and Occupational Health, and,Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Valerian E. Kagan
- Department of Environmental and Occupational Health, and,Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Rama K. Mallampalli
- Department of Medicine, Ohio State University Medical Center, Columbus, Ohio, USA
| | - Anuradha Ray
- Acute Lung Injury Center of Excellence,,Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine
| | - Prabir Ray
- Acute Lung Injury Center of Excellence,,Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine
| | - Janet S. Lee
- Acute Lung Injury Center of Excellence,,Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine,,Vascular Medicine Institute
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Wang XT, Cheng K, Zhu L. Hypoxia Accelerate β-Actin Expression through Transcriptional Activation of ACTB by Nuclear Respiratory Factor-1. Mol Biol 2020. [DOI: 10.1134/s0026893321020011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Ozone Activates the Nrf2 Pathway and Improves Preservation of Explanted Adipose Tissue In Vitro. Antioxidants (Basel) 2020; 9:antiox9100989. [PMID: 33066365 PMCID: PMC7602229 DOI: 10.3390/antiox9100989] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 10/12/2020] [Indexed: 12/20/2022] Open
Abstract
In clinical practice, administration of low ozone (O3) dosages is a complementary therapy for many diseases, due to the capability of O3 to elicit an antioxidant response through the Nuclear Factor Erythroid 2-Related Factor 2 (Nrf2)-dependent pathway. Nrf2 is also involved in the adipogenic differentiation of mesenchymal stem cells, and low O3 concentrations have been shown to stimulate lipid accumulation in human adipose-derived adult stem cells in vitro. Thus, O3 treatment is a promising procedure to improve the survival of explanted adipose tissue, whose reabsorption after fat grafting is a major problem in regenerative medicine. In this context, we carried out a pilot study to explore the potential of mild O3 treatment in preserving explanted murine adipose tissue in vitro. Scanning and transmission electron microscopy, Western blot, real-time polymerase chain reaction and nuclear magnetic resonance spectroscopy were used. Exposure to low O3 concentrations down in the degradation of the explanted adipose tissue and induced a concomitant increase in the protein abundance of Nrf2 and in the expression of its target gene Hmox1. These findings provide a promising background for further studies aimed at the clinical application of O3 as an adjuvant treatment to improve fat engraftment.
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Mitochondrial biogenesis in organismal senescence and neurodegeneration. Mech Ageing Dev 2020; 191:111345. [DOI: 10.1016/j.mad.2020.111345] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 08/17/2020] [Accepted: 08/27/2020] [Indexed: 12/19/2022]
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Lou B, Hu Y, Lu X, Zhang X, Li Y, Pi J, Xu Y. Long-isoform NRF1 protects against arsenic cytotoxicity in mouse bone marrow-derived mesenchymal stem cells by suppressing mitochondrial ROS and facilitating arsenic efflux. Toxicol Appl Pharmacol 2020; 407:115251. [PMID: 32980394 DOI: 10.1016/j.taap.2020.115251] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 09/02/2020] [Accepted: 09/22/2020] [Indexed: 12/13/2022]
Abstract
Acute exposure to arsenic is known to cause bone marrow depression and result in anemia, in which the dusfunction of cells in the bone marrow niche such as mesenchymal stem cells (MSCs) is vital. However, the mechanism underlying response of MSCs to arsenic challange is not fully understood. In the present study, we investigated the role of nuclear factor erythroid 2-related factor (NRF) 1 (NRF1), a sister member of the well-known master regulator in antioxidative response NRF2, in arsenite-induced cytotoxicity in mouse bone marrow-derived MSCs (mBM-MSCs). We found that arsenite exposure induced significant increase in the protein level of long-isoform NRF1 (L-NRF1). Though short-isoform NRF1 (S-NRF1) was induced by arsenite at mRNA level, its protein level was not obviously altered. Silencing L-Nrf1 sensitized the cells to arsenite-induced cytotoxicity. L-Nrf1-silenced mBM-MSCs showed decreased arsenic efflux with reduced expression of arsenic transporter ATP-binding cassette subfamily C member 4 (ABCC4), as well as compromised NRF2-mediated antioxidative defense with elevated level of mitochondrial reactive oxygen species (mtROS) under arsenite-exposed conditions. A specific mtROS scavenger (Mito-quinone) alleviated cell apoptosis induced by arsenite in L-Nrf1-silenced mBM-MSCs. Taken together, these findings suggest that L-NRF1 protects mBM-MSCs from arsenite-induced cytotoxicity via suppressing mtROS in addition to facilitating cellular arsenic efflux.
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Affiliation(s)
- Bin Lou
- Laboratory of Chronic Diseases and Environmental Genetics, School of Public Health, China Medical University, Shenyang, Liaoning 110122, PR China
| | - Yuxin Hu
- Experimental Teaching Center, School of Public Health, China Medical University, Shenyang, Liaoning 110122, PR China
| | - Xiaoyu Lu
- Laboratory of Chronic Diseases and Environmental Genetics, School of Public Health, China Medical University, Shenyang, Liaoning 110122, PR China
| | - Xinyu Zhang
- Laboratory of Chronic Diseases and Environmental Genetics, School of Public Health, China Medical University, Shenyang, Liaoning 110122, PR China
| | - Yongfang Li
- The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang, Liaoning 110122, PR China; Research Center of Environment and Non-Communicable Diseases, School of Public Health, China Medical University, Shenyang, Liaoning 110122, PR China
| | - Jingbo Pi
- Experimental Teaching Center, School of Public Health, China Medical University, Shenyang, Liaoning 110122, PR China; The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang, Liaoning 110122, PR China; Program of Environmental Toxicology, School of Public Health, China Medical University, Shenyang, Liaoning 110122, PR China
| | - Yuanyuan Xu
- Laboratory of Chronic Diseases and Environmental Genetics, School of Public Health, China Medical University, Shenyang, Liaoning 110122, PR China; Experimental Teaching Center, School of Public Health, China Medical University, Shenyang, Liaoning 110122, PR China; The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang, Liaoning 110122, PR China.
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Mitochondrial Respiratory Defect Enhances Hepatoma Cell Invasiveness via STAT3/NFE2L1/STX12 Axis. Cancers (Basel) 2020; 12:cancers12092632. [PMID: 32942643 PMCID: PMC7565734 DOI: 10.3390/cancers12092632] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 09/10/2020] [Accepted: 09/14/2020] [Indexed: 12/30/2022] Open
Abstract
Simple Summary Mitochondria are essential organelles responsible for aerobic ATP production in eukaryotes. However, many solid tumor cells harbor an impaired mitochondrial ATP production system: oxidative phosphorylation (OXPHOS). The aim of this study was to elucidate the involvement of the mitochondrial OXPHOS defect in cancer cell activity, especially focusing on hepatoma cell invasiveness. We demonstrated that NADH:Ubiquinone Oxidoreductase Subunit A9 (NDUFA9) depletion was an upstream driver of the OXPHOS defect and nuclear factor-erythroid 2 like 1 (NFE2L1) upregulation in HCC tumors. NFE2L1 is the key transcription factor to enhance hepatoma cell invasiveness via STX12 expression. Our study presents a novel mitochondrial dysfunction-mediated retrograde signaling pathway and the resulting transcriptomic reprogramming in liver cancer progression, providing the NDUFA9/NFE2L1/STX12 axis as a key prognostic marker of aggressive liver cancer with mitochondrial defects. Abstract Mitochondrial respiratory defects have been implicated in cancer progression and metastasis, but how they control tumor cell aggressiveness remains unclear. Here, we demonstrate that a mitochondrial respiratory defect induces nuclear factor-erythroid 2 like 1 (NFE2L1) expression at the transcriptional level via reactive oxygen species (ROS)-mediated STAT3 activation. We identified syntaxin 12 (STX12) as an effective downstream target of NFE2L1 by performing cDNA microarray analysis after the overexpression and depletion of NFE2L1 in hepatoma cells. Bioinformatics analysis of The Cancer Genome Atlas Liver Hepatocellular carcinoma (TCGA-LIHC) open database (n = 371) also revealed a significant positive association (r = 0.3, p = 2.49 × 10−9) between NFE2L1 and STX12 expression. We further demonstrated that STX12 is upregulated through the ROS/STAT3/NFE2L1 axis and is a key downstream effector of NFE2L1 in modulating hepatoma cell invasiveness. In addition, gene enrichment analysis of TCGA-LIHC also showed that epithelial–mesenchymal transition (EMT)-related core genes are significantly upregulated in tumors co-expressing NFE2L1 and STX12. The positive association between NFE2L1 and STX12 expression was validated by immunohistochemistry of the hepatocellular carcinoma tissue array. Finally, higher EMT gene enrichment and worse overall survival (p = 0.043) were observed in the NFE2L1 and STX12 co-expression group with mitochondrial defect, as indicated by low NDUFA9 expression. Collectively, our results indicate that NFE2L1 is a key mitochondrial retrograde signaling-mediated primary gene product enhancing hepatoma cell invasiveness via STX12 expression and promoting liver cancer progression.
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Cao J, Zhou W, Steemers F, Trapnell C, Shendure J. Sci-fate characterizes the dynamics of gene expression in single cells. Nat Biotechnol 2020; 38:980-988. [PMID: 32284584 PMCID: PMC7416490 DOI: 10.1038/s41587-020-0480-9] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Accepted: 03/06/2020] [Indexed: 02/07/2023]
Abstract
Gene expression programs change over time, differentiation and development, and in response to stimuli. However, nearly all techniques for profiling gene expression in single cells do not directly capture transcriptional dynamics. In the present study, we present a method for combined single-cell combinatorial indexing and messenger RNA labeling (sci-fate), which uses combinatorial cell indexing and 4-thiouridine labeling of newly synthesized mRNA to concurrently profile the whole and newly synthesized transcriptome in each of many single cells. We used sci-fate to study the cortisol response in >6,000 single cultured cells. From these data, we quantified the dynamics of the cell cycle and glucocorticoid receptor activation, and explored their intersection. Finally, we developed software to infer and analyze cell-state transitions. We anticipate that sci-fate will be broadly applicable to quantitatively characterize transcriptional dynamics in diverse systems.
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Affiliation(s)
- Junyue Cao
- Department of Genome Sciences, University of Washington, Seattle, WA, USA.
| | - Wei Zhou
- Department of Genome Sciences, University of Washington, Seattle, WA, USA
- Molecular and Cellular Biology Program, University of Washington, Seattle, WA, USA
| | | | - Cole Trapnell
- Department of Genome Sciences, University of Washington, Seattle, WA, USA
- Brotman Baty Institute for Precision Medicine, Seattle, WA, USA
| | - Jay Shendure
- Department of Genome Sciences, University of Washington, Seattle, WA, USA.
- Brotman Baty Institute for Precision Medicine, Seattle, WA, USA.
- Allen Discovery Center for Cell Lineage Tracing, Seattle, WA, USA.
- Howard Hughes Medical Institute, Seattle, WA, USA.
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Chen KK, Minakuchi M, Wuputra K, Ku CC, Pan JB, Kuo KK, Lin YC, Saito S, Lin CS, Yokoyama KK. Redox control in the pathophysiology of influenza virus infection. BMC Microbiol 2020; 20:214. [PMID: 32689931 PMCID: PMC7370268 DOI: 10.1186/s12866-020-01890-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 07/01/2020] [Indexed: 01/07/2023] Open
Abstract
Triggered in response to external and internal ligands in cells and animals, redox homeostasis is transmitted via signal molecules involved in defense redox mechanisms through networks of cell proliferation, differentiation, intracellular detoxification, bacterial infection, and immune reactions. Cellular oxidation is not necessarily harmful per se, but its effects depend on the balance between the peroxidation and antioxidation cascades, which can vary according to the stimulus and serve to maintain oxygen homeostasis. The reactive oxygen species (ROS) that are generated during influenza virus (IV) infection have critical effects on both the virus and host cells. In this review, we outline the link between viral infection and redox control using IV infection as an example. We discuss the current state of knowledge on the molecular relationship between cellular oxidation mediated by ROS accumulation and the diversity of IV infection. We also summarize the potential anti-IV agents available currently that act by targeting redox biology/pathophysiology.
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Affiliation(s)
- Ker-Kong Chen
- grid.412019.f0000 0000 9476 5696School of Dentistry, Kaohsiung Medical University, Kaohsiung, 807 Taiwan ,Department of Densitory, Kaohisung University Hospital, Kaohisung, 807 Taiwan
| | - Moeko Minakuchi
- grid.5290.e0000 0004 1936 9975Waseda Research Institute for Science and Engineering, Waseca University, Shinjuku, Tokyo, 162-8480 Japan
| | - Kenly Wuputra
- grid.412019.f0000 0000 9476 5696Graduate Institute of Medicine, Kaohsiung Medical University, 100 Shih-Chuan 1st Rd., San-Ming District, Kaohsiung, 80807 Taiwan ,grid.412019.f0000 0000 9476 5696Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung, 807 Taiwan
| | - Chia-Chen Ku
- grid.412019.f0000 0000 9476 5696Graduate Institute of Medicine, Kaohsiung Medical University, 100 Shih-Chuan 1st Rd., San-Ming District, Kaohsiung, 80807 Taiwan ,grid.412019.f0000 0000 9476 5696Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung, 807 Taiwan
| | - Jia-Bin Pan
- grid.412019.f0000 0000 9476 5696Graduate Institute of Medicine, Kaohsiung Medical University, 100 Shih-Chuan 1st Rd., San-Ming District, Kaohsiung, 80807 Taiwan ,grid.412019.f0000 0000 9476 5696Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung, 807 Taiwan
| | - Kung-Kai Kuo
- grid.412027.20000 0004 0620 9374Department Surgery, Kaohsiung Medical University Hospital, Kaohsiung, 807 Taiwan
| | - Ying-Chu Lin
- grid.412019.f0000 0000 9476 5696School of Dentistry, Kaohsiung Medical University, Kaohsiung, 807 Taiwan
| | - Shigeo Saito
- grid.5290.e0000 0004 1936 9975Waseda Research Institute for Science and Engineering, Waseca University, Shinjuku, Tokyo, 162-8480 Japan ,Saito Laboratory of Cell Technology Institute, Yalta, Tochigi, 329-1471 Japan
| | - Chang-Shen Lin
- grid.412019.f0000 0000 9476 5696Graduate Institute of Medicine, Kaohsiung Medical University, 100 Shih-Chuan 1st Rd., San-Ming District, Kaohsiung, 80807 Taiwan ,grid.412036.20000 0004 0531 9758Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung, 80424 Taiwan
| | - Kazunari K. Yokoyama
- grid.5290.e0000 0004 1936 9975Waseda Research Institute for Science and Engineering, Waseca University, Shinjuku, Tokyo, 162-8480 Japan ,grid.412019.f0000 0000 9476 5696Graduate Institute of Medicine, Kaohsiung Medical University, 100 Shih-Chuan 1st Rd., San-Ming District, Kaohsiung, 80807 Taiwan ,grid.412019.f0000 0000 9476 5696Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung, 807 Taiwan ,grid.412027.20000 0004 0620 9374Cell Therapy and Research Center, Kaohsiung Medical University Hospital, Kaohsiung, 807 Taiwan
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Bailey LA, Rhomberg LR. Incorporating ToxCast™ data into naphthalene human health risk assessment. Toxicol In Vitro 2020; 67:104913. [PMID: 32526344 DOI: 10.1016/j.tiv.2020.104913] [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: 11/20/2019] [Revised: 05/27/2020] [Accepted: 06/04/2020] [Indexed: 10/24/2022]
Abstract
Chronic inhalation of naphthalene causes nasal olfactory epithelial tumors in rats and benign lung adenomas in mice. The available human data do not establish an association between naphthalene and increased respiratory cancer risk. Therefore, cancer risk assessment of naphthalene in humans depends predominantly on experimental evidence from rodents. The United States Environmental Protection Agency's (US EPA) Toxicity Forecaster (ToxCast™) database contains data from 710 in vitro assays for naphthalene, the majority of which were conducted in human cells. Of these assays, only 18 were active for naphthalene, and all were in human liver cells. No assays were active in human bronchial epithelial cells. In our analysis, all of the active naphthalene ToxCast assay data were reviewed and used to: 1) determine naphthalene human inhalation concentrations corresponding to relevant activity concentrations for all active naphthalene assays, using a physiologically based pharmacokinetic (PBPK) model; and 2) evaluate the transcriptional responses for active assays in the context of consistency with the larger naphthalene data set and proposed modes of action (MoAs) for naphthalene toxicity and carcinogenicity. The transcriptional responses in liver cells largely reflect cellular activities related to oxidative stress and chronic inflammation. Overall, the results from our analysis of the active ToxCast assays for naphthalene are consistent with conclusions from our earlier weight-of-evidence evaluation for naphthalene carcinogenesis.
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Affiliation(s)
- Lisa A Bailey
- Gradient, One Beacon Street, Boston, MA 02108, United States of America.
| | - Lorenz R Rhomberg
- Gradient, One Beacon Street, Boston, MA 02108, United States of America
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Gutiérrez-Carcedo P, Navalón S, Simó R, Setoain X, Aparicio-Gómez C, Abasolo I, Victor VM, García H, Herance JR. Alteration of the Mitochondrial Effects of Ceria Nanoparticles by Gold: An Approach for the Mitochondrial Modulation of Cells Based on Nanomedicine. NANOMATERIALS 2020; 10:nano10040744. [PMID: 32295053 PMCID: PMC7221686 DOI: 10.3390/nano10040744] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/04/2020] [Accepted: 04/07/2020] [Indexed: 12/13/2022]
Abstract
Ceria nanoparticles are cell compatible antioxidants whose activity can be enhanced by gold deposition and by surface functionalization with positive triphenylphosphonium units to selectively target the mitochondria. The antioxidant properties of these nanoparticles can serve as the basis of a new strategy for the treatment of several disorders exhibiting oxidative stress, such as cancer, diabetes or Alzheimer’s disease. However, all of these pathologies require a specific antioxidant according with their mechanism to remove oxidant species excess in cells and diminish their effect on mitochondrial function. The mechanism through which ceria nanoparticles neutralize oxidative stress and their effect on mitochondrial function have not been characterized yet. In the present study, the mitochondria antioxidant effect of ceria and ceria-supported gold nanoparticles, with or without triphenylphosphonium functionalization, was assessed in HeLa cells. The effect caused by ceria nanoparticles on mitochondria function in terms of mitochondrial membrane potential (∆Ψm), adenosine triphosphate (ATP) production, nuclear respiratory factor 1 (NRF1) and nuclear factor erythroid–2–like 1 (NFE2L1) was reversed by the presence of gold. Furthermore, this effect was enhanced when nanoparticles were functionalized with triphenylphosphonium. Our study illustrates how the mitochondrial antioxidant effect induced by ceria nanoparticles can be modulated by the presence of gold.
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Affiliation(s)
- Patricia Gutiérrez-Carcedo
- Medical Molecular Imaging Research Group, Vall d’Hebron Research Institute, CIBBIM-Nanomedicine, Universitat Autònoma de Barcelona (UAB) and Biomedical Imaging Group, Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 08035 Barcelona, Spain; (P.G.-C.); (C.A.-G.)
- Diabetes and Metabolism Research Unit, Vall d’Hebron Research Institute, Department of Endocrinology, Vall d’Hebron Research Institute, UAB, Biomedical Research Center in Diabetes Network and Associated Metabolic Diseases (CIBERDEM), 08035 Barcelona, Spain;
| | - Sergio Navalón
- Deparment of Chemistry and Instiute of Chemical Technology (CSIC-UPV), Universitat Politècnica de València, 46022 Valencia, Spain;
| | - Rafael Simó
- Diabetes and Metabolism Research Unit, Vall d’Hebron Research Institute, Department of Endocrinology, Vall d’Hebron Research Institute, UAB, Biomedical Research Center in Diabetes Network and Associated Metabolic Diseases (CIBERDEM), 08035 Barcelona, Spain;
| | - Xavier Setoain
- Hospital Clinic, Biophysics and Bioengineering Unit, Biomedicine Department, School of Medicine, University of Barcelona, and CIBER-BBN, 08036 Barcelona, Spain;
| | - Carolina Aparicio-Gómez
- Medical Molecular Imaging Research Group, Vall d’Hebron Research Institute, CIBBIM-Nanomedicine, Universitat Autònoma de Barcelona (UAB) and Biomedical Imaging Group, Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 08035 Barcelona, Spain; (P.G.-C.); (C.A.-G.)
| | - Ibane Abasolo
- Functional Validation & Preclinical Research (FVPR), Group of Drug Delivery & Targeting, CIBBIM-Nanomedicine, Vall d’Hebron Research Institute, UAB, CIBBER-BBN, 08035 Barcelona, Spain;
| | - Victor Manuel Victor
- Service of Endocrinology and Nutrition, University Hospital Doctor Peset, FISABIO, 46017 Valencia, Spain;
- CIBERehd, Department of Physiology, University of Valencia, 46010 Valencia, Spain
| | - Hermenegildo García
- Deparment of Chemistry and Instiute of Chemical Technology (CSIC-UPV), Universitat Politècnica de València, 46022 Valencia, Spain;
- Correspondence: (H.G.); (J.R.H.); Tel.: +34-96-387-7807 (H.G.); +34-93-489-3000 (ext. 4946) (J.R.H.)
| | - José Raúl Herance
- Medical Molecular Imaging Research Group, Vall d’Hebron Research Institute, CIBBIM-Nanomedicine, Universitat Autònoma de Barcelona (UAB) and Biomedical Imaging Group, Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 08035 Barcelona, Spain; (P.G.-C.); (C.A.-G.)
- Correspondence: (H.G.); (J.R.H.); Tel.: +34-96-387-7807 (H.G.); +34-93-489-3000 (ext. 4946) (J.R.H.)
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Cui M, Wang Z, Chen K, Shah AM, Tan W, Duan L, Sanchez-Ortiz E, Li H, Xu L, Liu N, Bassel-Duby R, Olson EN. Dynamic Transcriptional Responses to Injury of Regenerative and Non-regenerative Cardiomyocytes Revealed by Single-Nucleus RNA Sequencing. Dev Cell 2020; 53:102-116.e8. [PMID: 32220304 DOI: 10.1016/j.devcel.2020.02.019] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 01/07/2020] [Accepted: 02/25/2020] [Indexed: 12/22/2022]
Abstract
The adult mammalian heart is incapable of regeneration following injury. In contrast, the neonatal mouse heart can efficiently regenerate during the first week of life. The molecular mechanisms that mediate the regenerative response and its blockade in later life are not understood. Here, by single-nucleus RNA sequencing, we map the dynamic transcriptional landscape of five distinct cardiomyocyte populations in healthy, injured, and regenerating mouse hearts. We identify immature cardiomyocytes that enter the cell cycle following injury and disappear as the heart loses the ability to regenerate. These proliferative neonatal cardiomyocytes display a unique transcriptional program dependent on nuclear transcription factor Y subunit alpha (NFYa) and nuclear factor erythroid 2-like 1 (NFE2L1) transcription factors, which exert proliferative and protective functions, respectively. Cardiac overexpression of these two factors conferred protection against ischemic injury in mature mouse hearts that were otherwise non-regenerative. These findings advance our understanding of the cellular basis of neonatal heart regeneration and reveal a transcriptional landscape for heart repair following injury.
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Affiliation(s)
- Miao Cui
- Department of Molecular Biology, The Hamon Center for Regenerative Science and Medicine and Sen. Paul D. Wellstone Muscular Dystrophy Cooperative Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Zhaoning Wang
- Department of Molecular Biology, The Hamon Center for Regenerative Science and Medicine and Sen. Paul D. Wellstone Muscular Dystrophy Cooperative Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Kenian Chen
- Quantitative Biomedical Research Center, Department of Population & Data Sciences and Department of Pediatrics, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Akansha M Shah
- Department of Molecular Biology, The Hamon Center for Regenerative Science and Medicine and Sen. Paul D. Wellstone Muscular Dystrophy Cooperative Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Wei Tan
- Department of Molecular Biology, The Hamon Center for Regenerative Science and Medicine and Sen. Paul D. Wellstone Muscular Dystrophy Cooperative Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Lauren Duan
- Department of Molecular Biology, The Hamon Center for Regenerative Science and Medicine and Sen. Paul D. Wellstone Muscular Dystrophy Cooperative Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Efrain Sanchez-Ortiz
- Department of Molecular Biology, The Hamon Center for Regenerative Science and Medicine and Sen. Paul D. Wellstone Muscular Dystrophy Cooperative Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Hui Li
- Department of Molecular Biology, The Hamon Center for Regenerative Science and Medicine and Sen. Paul D. Wellstone Muscular Dystrophy Cooperative Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Lin Xu
- Quantitative Biomedical Research Center, Department of Population & Data Sciences and Department of Pediatrics, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Ning Liu
- Department of Molecular Biology, The Hamon Center for Regenerative Science and Medicine and Sen. Paul D. Wellstone Muscular Dystrophy Cooperative Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Rhonda Bassel-Duby
- Department of Molecular Biology, The Hamon Center for Regenerative Science and Medicine and Sen. Paul D. Wellstone Muscular Dystrophy Cooperative Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Eric N Olson
- Department of Molecular Biology, The Hamon Center for Regenerative Science and Medicine and Sen. Paul D. Wellstone Muscular Dystrophy Cooperative Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA.
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Overexpression of NRF1-742 or NRF1-772 Reduces Arsenic-Induced Cytotoxicity and Apoptosis in Human HaCaT Keratinocytes. Int J Mol Sci 2020; 21:ijms21062014. [PMID: 32188015 PMCID: PMC7139366 DOI: 10.3390/ijms21062014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/26/2020] [Accepted: 03/12/2020] [Indexed: 02/06/2023] Open
Abstract
Increasing evidence indicates that human exposure to inorganic arsenic causes cutaneous diseases and skin cancers. Nuclear factor erythroid 2-like 1 (NRF1) belongs to the cap “n” collar (CNC) basic-region leucine zipper (bZIP) transcription factor family and regulates antioxidant response element (ARE) genes. The human NRF1 gene is transcribed into multiple isoforms, which contain 584, 616, 742, 761, or 772 amino acids. We previously demonstrated that the long isoforms of NRF1 (i.e., NRF1-742, NRF1-761 and NRF1-772) are involved in the protection of human keratinocytes from acute arsenic cytotoxicity by enhancing the cellular antioxidant response. The aim of the current study was to investigate the roles of NRF1-742 and NRF1-772 in the arsenic-induced antioxidant response and cytotoxicity. We found that overexpression of NRF1-742 or NRF1-772 in human HaCaT keratinocytes decreased susceptibility to arsenic-induced apoptosis and cytotoxicity. In addition, we characterized the different protein bands observed for NRF1-742 and NRF1-772 by western blotting. The posttranslational modifications and nuclear translocation of these isoforms differed and were partially affected by arsenic exposure. Antioxidant protein levels were increased in the NRF1-742 and NRF1-772-overexpressing cell lines. The upregulation of antioxidant protein levels was partly due to the translation of nuclear factor erythroid 2-like 2 (NRF2) and its increased nuclear transport. Overall, overexpression of NRF1-742 and NRF1-772 protected HaCaT cells from arsenic-induced cytotoxicity, mainly through translational modifications and the promotion of antioxidant gene expression.
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Matsumaru D, Motohashi H. From germ cells to neonates: the beginning of life and the KEAP1-NRF2 system. J Biochem 2020; 167:133-138. [PMID: 31518425 DOI: 10.1093/jb/mvz070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Accepted: 08/23/2019] [Indexed: 12/30/2022] Open
Abstract
The Kelch-like ECH-associated protein 1(KEAP1)-NF-E2-related factor 2 (NRF2) system is one of the most studied environmental stress response systems. In the presence of oxidative and electrophilic insults, the thiols of cysteine residues in KEAP1 are modified, and subsequently stabilized NRF2 activates its target genes that are involved in detoxification and cytoprotection. A myriad of recent studies has revealed the broad range of contributions of the KEAP1-NRF2 system to physiological and pathological processes. However, its functions during gametic and embryonic development are still open for investigation. Although oxidative stress is harmful for embryos, Nrf2-/- mice do not show any apparent morphological abnormalities during development, probably because of the compensatory antioxidant functions of NF-E2-related factor 1 (NRF1). It can also be considered that the antioxidant system is essential for protecting germ cells during reproduction. The maturation processes of germ cells in both sexes are affected by Nrf2 mutation. Hence, in this review, we focus on the stress response system related to reproduction and embryonic development through the functions of the KEAP1-NRF2 system.
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Affiliation(s)
- Daisuke Matsumaru
- Department of Gene Expression Regulation, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-cho, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Hozumi Motohashi
- Department of Gene Expression Regulation, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-cho, Aoba-ku, Sendai, Miyagi 980-8575, Japan
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Lehrbach NJ, Breen PC, Ruvkun G. Protein Sequence Editing of SKN-1A/Nrf1 by Peptide:N-Glycanase Controls Proteasome Gene Expression. Cell 2020; 177:737-750.e15. [PMID: 31002798 DOI: 10.1016/j.cell.2019.03.035] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 12/14/2018] [Accepted: 03/15/2019] [Indexed: 12/20/2022]
Abstract
The proteasome mediates selective protein degradation and is dynamically regulated in response to proteotoxic challenges. SKN-1A/Nrf1, an endoplasmic reticulum (ER)-associated transcription factor that undergoes N-linked glycosylation, serves as a sensor of proteasome dysfunction and triggers compensatory upregulation of proteasome subunit genes. Here, we show that the PNG-1/NGLY1 peptide:N-glycanase edits the sequence of SKN-1A protein by converting particular N-glycosylated asparagine residues to aspartic acid. Genetically introducing aspartates at these N-glycosylation sites bypasses the requirement for PNG-1/NGLY1, showing that protein sequence editing rather than deglycosylation is key to SKN-1A function. This pathway is required to maintain sufficient proteasome expression and activity, and SKN-1A hyperactivation confers resistance to the proteotoxicity of human amyloid beta peptide. Deglycosylation-dependent protein sequence editing explains how ER-associated and cytosolic isoforms of SKN-1 perform distinct cytoprotective functions corresponding to those of mammalian Nrf1 and Nrf2. Thus, we uncover an unexpected mechanism by which N-linked glycosylation regulates protein function and proteostasis.
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Affiliation(s)
- Nicolas J Lehrbach
- Department of Molecular Biology, Massachusetts General Hospital, Boston, MA 02114, USA; Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Peter C Breen
- Department of Molecular Biology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Gary Ruvkun
- Department of Molecular Biology, Massachusetts General Hospital, Boston, MA 02114, USA; Department of Genetics, Harvard Medical School, Boston, MA 02115, USA.
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Proteasome Composition in Cytokine-Treated Neurons and Astrocytes is Determined Mainly by Subunit Displacement. Neurochem Res 2020; 45:860-871. [PMID: 31939090 DOI: 10.1007/s11064-020-02958-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 12/11/2019] [Accepted: 01/09/2020] [Indexed: 12/17/2022]
Abstract
In this study, we investigated if subunit displacement and/or alterations in proteasome biosynthesis are responsible for the changes in the levels of constitutive proteasomes (c-20S), immunoproteasomes (i-20S) and the activators PA28 and PA700 in neurons and astrocytes cultured with a cytokine mixture (IFN-γ/TNF-α/IL-1β). Exposure of both cell types to cytokines for 24 h increases mRNA and protein expression of the i-20S-specific subunit β5i and PA28α/β, and leads to a decline in the amount of the c-20S-specific subunit β5. Since β5 mRNA levels are unchanged by the cytokine treatment, it is fair to conclude that displacement of constitutive β-subunits with inducible β5i subunits is likely the mechanism underlying the decrease in c-20S. As expected, the increase in the amount of the IFN-γ-inducible subunits coincides with elevated expression of phospho-STAT-1 and interferon regulatory factor-1 (IRF-1). However, inhibition of NF-κB signaling in cytokine-treated astrocytes reduces IRF-1 expression without affecting that of i-20S, c-20S and PA28. This suggests that STAT-1 is capable of increasing the transcription of i20S-specific subunits and PA28α/β by itself. The lack of a decrease in proteasome β5 mRNA expression is consistent with the fact that Nrf1 (Nfe2l1) and Nrf2 (Nfe2l2) levels are not reduced by pro-inflammatory cytokines. In contrast, we previously found that there is a significant Nrf1 dysregulation and reduced β5 mRNA expression in the spinal cords of mice with experimental autoimmune encephalomyelitis (EAE). Thus, there are stressors in EAE, other than a pro-inflammatory environment, that are not present in cytokine-treated cells.
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Northrop A, Vangala JR, Feygin A, Radhakrishnan SK. Disabling the Protease DDI2 Attenuates the Transcriptional Activity of NRF1 and Potentiates Proteasome Inhibitor Cytotoxicity. Int J Mol Sci 2020; 21:ijms21010327. [PMID: 31947743 PMCID: PMC6982299 DOI: 10.3390/ijms21010327] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 12/27/2019] [Accepted: 12/29/2019] [Indexed: 12/14/2022] Open
Abstract
Proteasome inhibition is used therapeutically to induce proteotoxic stress and trigger apoptosis in cancer cells that are highly dependent on the proteasome. As a mechanism of resistance, inhibition of the cellular proteasome induces the synthesis of new, uninhibited proteasomes to restore proteasome activity and relieve proteotoxic stress in the cell, thus evading apoptosis. This evolutionarily conserved compensatory mechanism is referred to as the proteasome-bounce back response and is orchestrated in mammalian cells by nuclear factor erythroid derived 2-related factor 1 (NRF1), a transcription factor and master regulator of proteasome subunit genes. Upon synthesis, NRF1 is cotranslationally inserted into the endoplasmic reticulum (ER), then is rapidly retrotranslocated into the cytosol and degraded by the proteasome. In contrast, during conditions of proteasome inhibition or insufficiency, NRF1 escapes degradation, is proteolytically cleaved by the aspartyl protease DNA damage inducible 1 homolog 2 (DDI2) to its active form, and enters the nucleus as an active transcription factor. Despite these insights, the cellular compartment where the proteolytic processing step occurs remains unclear. Here we further probed this pathway and found that NRF1 can be completely retrotranslocated into the cytosol where it is then cleaved and activated by DDI2. Furthermore, using a triple-negative breast cancer cell line MDA-MB-231, we investigated the therapeutic utility of attenuating DDI2 function. We found that DDI2 depletion attenuated NRF1 activation and potentiated the cytotoxic effects of the proteasome inhibitor carfilzomib. More importantly, expression of a point-mutant of DDI2 that is protease-dead recapitulated these effects. Taken together, our results provide a strong rationale for a combinational therapy that utilizes inhibition of the proteasome and the protease function of DDI2. This approach could expand the repertoire of cancer types that can be successfully treated with proteasome inhibitors in the clinic.
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49
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Bakare AO, Owoyele BV. Antinociceptive and neuroprotective effects of bromelain in chronic constriction injury-induced neuropathic pain in Wistar rats. Korean J Pain 2020; 33:13-22. [PMID: 31888313 PMCID: PMC6944371 DOI: 10.3344/kjp.2020.33.1.13] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 09/21/2019] [Accepted: 09/22/2019] [Indexed: 02/06/2023] Open
Abstract
Background The continuous search for a novel neuropathic pain drug with few or no side effects has been a main focus of researchers for decades. This study investigated the antinociceptive and neuroprotective effects of bromelain in sciatic nerve ligation-induced neuropathic pain in Wistar rats. Methods Forty-eight Wistar rats randomly divided into eight groups comprised of six animals each were used for this study. Peripheral neuropathy was induced via chronic constriction of the common sciatic nerve. Thermal hyperalgesic and mechanical allodynia were assessed using a hotplate and von Frey filaments, respectively. The functional recovery and structural architecture of the ligated sciatic nerve were evaluated using the sciatic functional index test and a histological examination of the transverse section of the sciatic nerve. The neuroprotective effects of bromelain were investigated in the proximal sciatic nerve tissue after 21 days of treatment. Results Bromelain significantly (P < 0.05) attenuated both the thermal hyperalgesia and mechanical allodynic indices of neuropathic pain. There were improvements in sciatic function and structural integrity in rats treated with bromelain. These rats showed significant (P < 0.05) increases in sciatic nerve nuclear transcription factors (nuclear factor erythroid-derived-2-related factors-1 [NrF-1] and NrF-2), antioxidant enzymes (superoxide dismutase and glutathione), and reduced membrane-lipid peroxidation compared with the ligated control group. Conclusions This study suggest that bromelain mitigated neuropathic pain by enhancing the activities of nuclear transcription factors (NrF-1 and NrF-2) which increases the antioxidant defense system that abolish neuronal stress and structural disorganization.
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Affiliation(s)
- Ahmed Olalekan Bakare
- Neuroscience and Inflammation Unit, Department of Physiology, Faculty of Basic Medical Sciences, University of Ilorin, Ilorin, Nigeria
| | - Bamidele Victor Owoyele
- Neuroscience and Inflammation Unit, Department of Physiology, Faculty of Basic Medical Sciences, University of Ilorin, Ilorin, Nigeria
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Xue P, Hou Y, Zuo Z, Wang Z, Ren S, Dong J, Fu J, Wang H, Andersen ME, Zhang Q, Xu Y, Pi J. Long isoforms of NRF1 negatively regulate adipogenesis via suppression of PPARγ expression. Redox Biol 2019; 30:101414. [PMID: 31931283 PMCID: PMC6957832 DOI: 10.1016/j.redox.2019.101414] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 12/02/2019] [Accepted: 12/23/2019] [Indexed: 01/12/2023] Open
Abstract
Nuclear factor erythroid 2-related factor 1 (NRF1), a ubiquitously expressed CNC-bZIP transcription factor, plays a critical role in white adipocyte (WAC) biology, whereas the underlying mechanisms remain unknown. The mouse Nrf1 gene is transcribed in a number of alternatively spliced forms, resulting in two long protein isoforms (L-NRF1) containing 741 and 742 amino acids (aa) and multiple short isoforms (S-NRF1). Our previous study found that adipocyte-specific knockout of Nrf1 [Nrf1(f)-KO] in mice disturbs the expression of lipolytic genes in adipocytes, leading to adipocyte hypertrophy followed by inflammation, pyroptosis and insulin resistance. In the present study, we found that the stromal vascular fraction (SVF) cells isolated from white adipose tissues (WAT) of Nrf1(f)-KO mice display augmented adipogenesis showing elevated mRNA and protein expression of adipogenic markers and lipid accumulation. In 3T3-L1 cells, stable knockdown (KD) of all or long isoforms of Nrf1 (termed as A-Nrf1-KD and L-Nrf1-KD, respectively) using lentiviral shRNAs resulted in enhanced and accelerated adipogenic differentiation. Conversely, overexpression of L-NRF1-741, but not any of the S-NRF1, substantially attenuated adipogenesis in 3T3-L1 cells. These findings indicate that L-NRF1 might serve as a critical negative regulator of adipogenesis. Mechanistic investigation revealed that L-NRF1 may negatively regulates the transcription of peroxisome proliferator-activated receptor γ (PPARγ), in particular the master regulator of adipogenesis PPARγ2. Taken all together, the findings in the present study provide further evidence for a novel role of NRF1 beyond its participation in cellular antioxidant response and suggest that L-NRF1 is a negative regulator of PPARγ2 expression and thereby can suppress adipogenesis. SVF cells isolated from WAT of Nrf1(f)-KO mice displayed augmented adipogenesis. Stable silencing of L-Nrf1 in 3T3-L1 cells resulted in enhanced and accelerated adipogenesis. Overexpression of L-NRF1-741, but not S-NRF1s, attenuated adipogenesis in 3T3-L1 cells. L-NRF1 suppressed adipogenesis via downregulating PPARγ2 expression.
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Affiliation(s)
- Peng Xue
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, PR China; ScitoVation LLC, Research Triangle Park, NC, USA
| | - Yongyong Hou
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, PR China
| | - Zhuo Zuo
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, PR China
| | - Zhendi Wang
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, PR China
| | - Suping Ren
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, PR China
| | - Jian Dong
- ScitoVation LLC, Research Triangle Park, NC, USA
| | - Jingqi Fu
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, PR China
| | - Huihui Wang
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, PR China
| | | | - Qiang Zhang
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Yuanyuan Xu
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, PR China.
| | - Jingbo Pi
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, PR China.
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