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Althobaiti NA, Al-Abbas NS, Alsharif I, Albalawi AE, Almars AI, Basabrain AA, Jafer A, Ellatif SA, Bauthman NM, Almohaimeed HM, Soliman MH. Gadd45A-mediated autophagy regulation and its impact on Alzheimer's disease pathogenesis: Deciphering the molecular Nexus. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167353. [PMID: 39004381 DOI: 10.1016/j.bbadis.2024.167353] [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: 12/30/2023] [Revised: 06/18/2024] [Accepted: 07/08/2024] [Indexed: 07/16/2024]
Abstract
BACKGROUND The growth arrest and DNA damage-inducible 45 (Gadd45) gene has been implicated in various central nervous system (CNS) functions, both normal and pathological, including aging, memory, and neurodegenerative diseases. In this study, we examined whether Gadd45A deletion triggers pathways associated with neurodegenerative diseases including Alzheimer's disease (AD). METHODS Utilizing transcriptome data from AD-associated hippocampus samples, we identified Gadd45A as a pivotal regulator of autophagy. Comprehensive analyses, including Gene Ontology enrichment and protein-protein interaction network assessments, highlighted Cdkn1A as a significant downstream target of Gadd45A. Experimental validation confirmed Gadd45A's role in modulating Cdkn1A expression and autophagy levels in hippocampal cells. We also examined the effects of autophagy on hippocampal functions and proinflammatory cytokine secretion. Additionally, a murine model was employed to validate the importance of Gadd45A in neuroinflammation and AD pathology. RESULTS Our study identified 20 autophagy regulatory factors associated with AD, with Gadd45A emerging as a critical regulator. Experimental findings demonstrated that Gadd45A influences hippocampal cell fate by reducing Cdkn1A expression and suppressing autophagic activity. Comparisons between wild-type (WT) and Gadd45A knockout (Gadd45A-/-) mice revealed that Gadd45A-/- mice exhibited significant cognitive impairments, including deficits in working and spatial memory, increased Tau hyperphosphorylation, and elevated levels of kinases involved in Tau phosphorylation in the hippocampus. Additionally, Gadd45A-/- mice showed significant increases in pro-inflammatory cytokines and decreases autophagy markers in the brain. Neurotrophin levels and dendritic spine length were also reduced in Gadd45A-/- mice, likely contributing to the observed cognitive deficits. CONCLUSIONS These findings support the direct involvement of the Gadd45A gene in AD pathogenesis, and enhancing the expression of Gadd45A may represent a promising therapeutic strategy for the treatment of AD.
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Affiliation(s)
- Norah A Althobaiti
- Biology Department, College of Science and Humanities, Shaqra University, Saudi Arabia
| | - Nouf S Al-Abbas
- Department of Biology, Jamoum University College, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Ifat Alsharif
- Department of Biology, Jamoum University College, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Aishah E Albalawi
- Faculty of Science, Department of Biology, University of Tabuk, Tabuk 47913, Saudi Arabia
| | - Amany I Almars
- Department of Medial Laboratory Sciences, Faculty of Applied Medical Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Ammar A Basabrain
- Department of Medial Laboratory Sciences, Faculty of Applied Medical Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Hematology Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Ayman Jafer
- Department of Medial Laboratory Sciences, Faculty of Applied Medical Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Sawsan Abd Ellatif
- Bioprocess Development Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), Alexandria 21934, Egypt
| | - Nuha M Bauthman
- Department of Obstetric & Gynecology, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | - Hailah M Almohaimeed
- Department of Basic Science, College of Medicine, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Mona H Soliman
- Botany and Microbiology Department, Faculty of Science, Cairo University, Giza 12613, Egypt; Biology Department, Faculty of Science, Taibah University, Al-Sharm, Yanbu El-Bahr, Yanbu 46429, Saudi Arabia.
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García-Vega M, Llamas-Covarrubias MA, Loza M, Reséndiz-Sandoval M, Hinojosa-Trujillo D, Melgoza-González E, Valenzuela O, Mata-Haro V, Hernández-Oñate M, Soto-Gaxiola A, Chávez-Rueda K, Nakai K, Hernández J. Single-cell transcriptomic analysis of B cells reveals new insights into atypical memory B cells in COVID-19. J Med Virol 2024; 96:e29851. [PMID: 39132689 DOI: 10.1002/jmv.29851] [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: 05/15/2024] [Revised: 07/10/2024] [Accepted: 07/31/2024] [Indexed: 08/13/2024]
Abstract
Here, we performed single-cell RNA sequencing of S1 and receptor binding domain protein-specific B cells from convalescent COVID-19 patients with different clinical manifestations. This study aimed to evaluate the role and developmental pathway of atypical memory B cells (MBCs) in response to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. The results revealed a proinflammatory signature across B cell subsets associated with disease severity, as evidenced by the upregulation of genes such as GADD45B, MAP3K8, and NFKBIA in critical and severe individuals. Furthermore, the analysis of atypical MBCs suggested a developmental pathway similar to that of conventional MBCs through germinal centers, as indicated by the expression of several genes involved in germinal center processes, including CXCR4, CXCR5, BCL2, and MYC. Additionally, the upregulation of genes characteristic of the immune response in COVID-19, such as ZFP36 and DUSP1, suggested that the differentiation and activation of atypical MBCs may be influenced by exposure to SARS-CoV-2 and that these genes may contribute to the immune response for COVID-19 recovery. Our study contributes to a better understanding of atypical MBCs in COVID-19 and the role of other B cell subsets across different clinical manifestations.
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Affiliation(s)
- Melissa García-Vega
- Laboratorio de Inmunología, Centro de Investigación en Alimentación y Desarrollo, A.C, Hermosillo, Sonora, Mexico
| | | | - Martin Loza
- The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
| | - Mónica Reséndiz-Sandoval
- Laboratorio de Inmunología, Centro de Investigación en Alimentación y Desarrollo, A.C, Hermosillo, Sonora, Mexico
| | - Diana Hinojosa-Trujillo
- Laboratorio de Inmunología, Centro de Investigación en Alimentación y Desarrollo, A.C, Hermosillo, Sonora, Mexico
| | - Edgar Melgoza-González
- Laboratorio de Inmunología, Centro de Investigación en Alimentación y Desarrollo, A.C, Hermosillo, Sonora, Mexico
| | - Olivia Valenzuela
- Departamento de Ciencias Químico Biológicas, División de Ciencias Biológicas y de la Salud, Universidad de Sonora, Hermosillo, Sonora, Mexico
| | - Verónica Mata-Haro
- Laboratorio de Microbiología e Inmunología, Centro de Investigación en Alimentación y Desarrollo, A.C, Hermosillo, Sonora, Mexico
| | - Miguel Hernández-Oñate
- CONAHCYT-Laboratorio de Fisiología y Biología Molecular de Plantas, Centro de Investigación en Alimentación y Desarrollo, A.C, Hermosillo, Sonora, Mexico
| | - Alan Soto-Gaxiola
- Hospital General del Estado de Sonora "Dr. Ernesto Ramos Bours", Secretaria de Salud del Estado de Sonora, Hermosillo, Sonora, Mexico
| | - Karina Chávez-Rueda
- Unidad de Investigación Médica en Inmunología, UMAE, Hospital de Pediatría, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Ciudad de México, Mexico
| | - Kenta Nakai
- The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
| | - Jesús Hernández
- Laboratorio de Inmunología, Centro de Investigación en Alimentación y Desarrollo, A.C, Hermosillo, Sonora, Mexico
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Palomer X, Salvador JM, Griñán-Ferré C, Barroso E, Pallàs M, Vázquez-Carrera M. GADD45A: With or without you. Med Res Rev 2024; 44:1375-1403. [PMID: 38264852 DOI: 10.1002/med.22015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 12/11/2023] [Accepted: 01/09/2024] [Indexed: 01/25/2024]
Abstract
The growth arrest and DNA damage inducible (GADD)45 family includes three small and ubiquitously distributed proteins (GADD45A, GADD45B, and GADD45G) that regulate numerous cellular processes associated with stress signaling and injury response. Here, we provide a comprehensive review of the current literature investigating GADD45A, the first discovered member of the family. We first depict how its levels are regulated by a myriad of genotoxic and non-genotoxic stressors, and through the combined action of intricate transcriptional, posttranscriptional, and even, posttranslational mechanisms. GADD45A is a recognized tumor suppressor and, for this reason, we next summarize its role in cancer, as well as the different mechanisms by which it regulates cell cycle, DNA repair, and apoptosis. Beyond these most well-known actions, GADD45A may also influence catabolic and anabolic pathways in the liver, adipose tissue and skeletal muscle, among others. Not surprisingly, GADD45A may trigger AMP-activated protein kinase activity, a master regulator of metabolism, and is known to act as a transcriptional coregulator of numerous nuclear receptors. GADD45A has also been reported to display a cytoprotective role by regulating inflammation, fibrosis and oxidative stress in several organs and tissues, and is regarded an important contributor for the development of heart failure. Overall data point to that GADD45A may play an important role in metabolic, neurodegenerative and cardiovascular diseases, and also autoimmune-related disorders. Thus, the potential mechanisms by which dysregulation of GADD45A activity may contribute to the progression of these diseases are also reviewed below.
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Affiliation(s)
- Xavier Palomer
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, Barcelona, Spain
- Institute of Biomedicine of the University of Barcelona (IBUB), University of Barcelona, Barcelona, Spain
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic Diseases (CIBERDEM)-Instituto de Salud Carlos III, Madrid, Spain
- Pediatric Research Institute-Hospital Sant Joan de Déu, Esplugues de Llobregat, Barcelona, Spain
| | - Jesús M Salvador
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/CSIC, Madrid, Spain
| | - Christian Griñán-Ferré
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, Barcelona, Spain
- Institut de Neurociències, Universitat de Barcelona (NeuroUB), Barcelona, Spain
- Spanish Biomedical Research Center in Neurodegenerative Diseases (CIBERNED)-Instituto de Salud Carlos III, Madrid, Spain
| | - Emma Barroso
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, Barcelona, Spain
- Institute of Biomedicine of the University of Barcelona (IBUB), University of Barcelona, Barcelona, Spain
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic Diseases (CIBERDEM)-Instituto de Salud Carlos III, Madrid, Spain
- Pediatric Research Institute-Hospital Sant Joan de Déu, Esplugues de Llobregat, Barcelona, Spain
| | - Mercè Pallàs
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, Barcelona, Spain
- Institut de Neurociències, Universitat de Barcelona (NeuroUB), Barcelona, Spain
- Spanish Biomedical Research Center in Neurodegenerative Diseases (CIBERNED)-Instituto de Salud Carlos III, Madrid, Spain
| | - Manuel Vázquez-Carrera
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, Barcelona, Spain
- Institute of Biomedicine of the University of Barcelona (IBUB), University of Barcelona, Barcelona, Spain
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic Diseases (CIBERDEM)-Instituto de Salud Carlos III, Madrid, Spain
- Pediatric Research Institute-Hospital Sant Joan de Déu, Esplugues de Llobregat, Barcelona, Spain
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O'Brien KM, Rix AS, Jasmin A, Lavelle E. The hypoxia response pathway in the Antarctic fish Notothenia coriiceps is functional despite a poly Q/E insertion mutation in HIF-1α. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART D, GENOMICS & PROTEOMICS 2024; 50:101218. [PMID: 38412701 PMCID: PMC11128347 DOI: 10.1016/j.cbd.2024.101218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 02/12/2024] [Accepted: 02/12/2024] [Indexed: 02/29/2024]
Abstract
Antarctic notothenioid fishes, inhabiting the oxygen-rich Southern Ocean, possess a polyglutamine and glutamic acid (poly Q/E) insertion mutation in the master transcriptional regulator of oxygen homeostasis, hypoxia- inducible factor-1α (HIF-1α). To determine if this mutation impairs the ability of HIF-1 to regulate gene expression in response to hypoxia, we exposed Notothenia coriiceps, with a poly Q/E insertion mutation in HIF-1α that is 9 amino acids long, to hypoxia (2.3 mg L-1 O2) or normoxia (10 mg L -1 O2) for 12 h. Heart ventricles, brain, liver, and gill tissue were harvested and changes in gene expression quantified using RNA sequencing. Levels of glycogen and lactate were also quantified to determine if anaerobic metabolism increases in response to hypoxia. Exposure to hypoxia resulted in 818 unique differentially expressed genes (DEGs) in liver tissue of N. coriiceps. Many hypoxic genes were induced, including ones involved in the MAP kinase and FoxO pathways, glycolytic metabolism, and vascular remodeling. In contrast, there were fewer than 104 unique DEGs in each of the other tissues sampled. Lactate levels significantly increased in liver in response to hypoxia, indicating that anaerobic metabolism increases in response to hypoxia in this tissue. Overall, our results indicate that the hypoxia response pathway is functional in N. coriiceps despite a poly Q/E mutation in HIF-1α, and confirm that Antarctic fishes are capable of altering gene expression in response to hypoxia.
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Affiliation(s)
- K M O'Brien
- University of Alaska Fairbanks, Institute of Arctic Biology and Department of Biology & Wildlife, Fairbanks, AK 99775, USA.
| | - A S Rix
- University of Alaska Fairbanks, Institute of Arctic Biology and Department of Biology & Wildlife, Fairbanks, AK 99775, USA.
| | - A Jasmin
- University of Alaska Fairbanks, Institute of Arctic Biology and Department of Biology & Wildlife, Fairbanks, AK 99775, USA
| | - E Lavelle
- National Center for Genome Resources, Santa Fe, NM 87505, USA.
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Zhong H, Zhang X, Wu Y, Li L, Zhang Z, Chi X, Cui X, Ji C. The dairy-derived peptide Miltin exerts anti-obesity effects by increasing adipocyte thermogenesis. Food Funct 2024; 15:5300-5314. [PMID: 38669145 DOI: 10.1039/d3fo05704f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2024]
Abstract
Growing research has highlighted that the consumption of dairy products improves the metabolic health in obese individuals by functioning as regulatory modulators. However, the molecular basis of this effect remains largely unknown. Herein, we report a dairy-derived peptide, which we named Miltin, that activates the thermogenesis of brown adipocytes and increases white adipocyte browning. Previously, Miltin was merely identified for its antioxidant capacity, although it is commonly present in different dairy products. In this study, we revealed the effect of Miltin in modulating adipose thermogenesis and further explored its potential in treating obesity through in vivo and in vitro strategies. The administration of Miltin in mice fed with a high-fat diet resulted in enhanced thermogenesis, improved glucose homeostasis, and reduced body mass and lipid accumulation, indicating the anti-obesity effect of Miltin. Genomic analysis revealed that Miltin modulates thermogenesis by inducing the activation of the MAPK signaling pathway by preferentially interacting with GADD45γ to promote its stability. Together, our findings indicate that Miltin's role in initiating the thermogenesis of adipocytes makes it a potential anti-obesity therapy for future development.
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Affiliation(s)
- Hong Zhong
- Nanjing Maternal and Child Health Institute, Women's Hospital of Nanjing Medical University, Nanjing Women and Children's Healthcare Hospital, 123 Tianfei Alley, Mochou Road, Nanjing, China.
| | - Xiaoxiao Zhang
- Nanjing Maternal and Child Health Institute, Women's Hospital of Nanjing Medical University, Nanjing Women and Children's Healthcare Hospital, 123 Tianfei Alley, Mochou Road, Nanjing, China.
| | - Yangyang Wu
- Nanjing Maternal and Child Health Institute, Women's Hospital of Nanjing Medical University, Nanjing Women and Children's Healthcare Hospital, 123 Tianfei Alley, Mochou Road, Nanjing, China.
| | - Lu Li
- Nanjing Maternal and Child Health Institute, Women's Hospital of Nanjing Medical University, Nanjing Women and Children's Healthcare Hospital, 123 Tianfei Alley, Mochou Road, Nanjing, China.
| | - Zhuo Zhang
- Nanjing Maternal and Child Health Institute, Women's Hospital of Nanjing Medical University, Nanjing Women and Children's Healthcare Hospital, 123 Tianfei Alley, Mochou Road, Nanjing, China.
| | - Xia Chi
- Nanjing Maternal and Child Health Institute, Women's Hospital of Nanjing Medical University, Nanjing Women and Children's Healthcare Hospital, 123 Tianfei Alley, Mochou Road, Nanjing, China.
| | - Xianwei Cui
- Nanjing Maternal and Child Health Institute, Women's Hospital of Nanjing Medical University, Nanjing Women and Children's Healthcare Hospital, 123 Tianfei Alley, Mochou Road, Nanjing, China.
| | - Chenbo Ji
- Nanjing Maternal and Child Health Institute, Women's Hospital of Nanjing Medical University, Nanjing Women and Children's Healthcare Hospital, 123 Tianfei Alley, Mochou Road, Nanjing, China.
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Griñán-Ferré C, Jarne-Ferrer J, Bellver-Sanchis A, Ribalta-Vilella M, Barroso E, Salvador JM, Jurado-Aguilar J, Palomer X, Vázquez-Carrera M, Pallàs M. Deletion of Gadd45a Expression in Mice Leads to Cognitive and Synaptic Impairment Associated with Alzheimer's Disease Hallmarks. Int J Mol Sci 2024; 25:2595. [PMID: 38473843 DOI: 10.3390/ijms25052595] [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: 01/10/2024] [Revised: 02/10/2024] [Accepted: 02/18/2024] [Indexed: 03/14/2024] Open
Abstract
Gadd45 genes have been implicated in survival mechanisms, including apoptosis, autophagy, cell cycle arrest, and DNA repair, which are processes related to aging and life span. Here, we analyzed if the deletion of Gadd45a activates pathways involved in neurodegenerative disorders such as Alzheimer's Disease (AD). This study used wild-type (WT) and Gadd45a knockout (Gadd45a-/-) mice to evaluate AD progression. Behavioral tests showed that Gadd45a-/- mice presented lower working and spatial memory, pointing out an apparent cognitive impairment compared with WT animals, accompanied by an increase in Tau hyperphosphorylation and the levels of kinases involved in its phosphorylation in the hippocampus. Moreover, Gadd45a-/- animals significantly increased the brain's pro-inflammatory cytokines and modified autophagy markers. Notably, neurotrophins and the dendritic spine length of the neurons were reduced in Gadd45a-/- mice, which could contribute to the cognitive alterations observed in these animals. Overall, these findings demonstrate that the lack of the Gadd45a gene activates several pathways that exacerbate AD pathology, suggesting that promoting this protein's expression or function might be a promising therapeutic strategy to slow down AD progression.
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Affiliation(s)
- Christian Griñán-Ferré
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, University of Barcelona, Avda. Joan XXIII 27, 08028 Barcelona, Spain
- Institute of Neurosciences of the University of Barcelona, University of Barcelona, 08035 Barcelona, Spain
- Spanish Biomedical Research Center in Neurodegenerative Diseases (CIBERNED)-National Institute of Health Carlos III, 28029 Madrid, Spain
| | - Júlia Jarne-Ferrer
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, University of Barcelona, Avda. Joan XXIII 27, 08028 Barcelona, Spain
- Institute of Neurosciences of the University of Barcelona, University of Barcelona, 08035 Barcelona, Spain
| | - Aina Bellver-Sanchis
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, University of Barcelona, Avda. Joan XXIII 27, 08028 Barcelona, Spain
- Institute of Neurosciences of the University of Barcelona, University of Barcelona, 08035 Barcelona, Spain
| | - Marta Ribalta-Vilella
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, University of Barcelona, Avda. Joan XXIII 27, 08028 Barcelona, Spain
- Institute of Neurosciences of the University of Barcelona, University of Barcelona, 08035 Barcelona, Spain
| | - Emma Barroso
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, University of Barcelona, Avda. Joan XXIII 27, 08028 Barcelona, Spain
- Institute of Biomedicine of the University of Barcelona (IBUB), University of Barcelona, 08028 Barcelona, Spain
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic Diseases (CIBERDEM)-National Institute of Health Carlos III, 28029 Madrid, Spain
- Pediatric Research Institute-Hospital Sant Joan de Déu, Esplugues de Llobregat, 08950 Barcelona, Spain
| | - Jesús M Salvador
- Department of Immunology and Oncology, National Center for Biotechnology/CSIC, 28049 Madrid, Spain
| | - Javier Jurado-Aguilar
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, University of Barcelona, Avda. Joan XXIII 27, 08028 Barcelona, Spain
- Institute of Biomedicine of the University of Barcelona (IBUB), University of Barcelona, 08028 Barcelona, Spain
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic Diseases (CIBERDEM)-National Institute of Health Carlos III, 28029 Madrid, Spain
- Pediatric Research Institute-Hospital Sant Joan de Déu, Esplugues de Llobregat, 08950 Barcelona, Spain
| | - Xavier Palomer
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, University of Barcelona, Avda. Joan XXIII 27, 08028 Barcelona, Spain
- Institute of Biomedicine of the University of Barcelona (IBUB), University of Barcelona, 08028 Barcelona, Spain
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic Diseases (CIBERDEM)-National Institute of Health Carlos III, 28029 Madrid, Spain
- Pediatric Research Institute-Hospital Sant Joan de Déu, Esplugues de Llobregat, 08950 Barcelona, Spain
| | - Manuel Vázquez-Carrera
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, University of Barcelona, Avda. Joan XXIII 27, 08028 Barcelona, Spain
- Institute of Biomedicine of the University of Barcelona (IBUB), University of Barcelona, 08028 Barcelona, Spain
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic Diseases (CIBERDEM)-National Institute of Health Carlos III, 28029 Madrid, Spain
- Pediatric Research Institute-Hospital Sant Joan de Déu, Esplugues de Llobregat, 08950 Barcelona, Spain
| | - Mercè Pallàs
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, University of Barcelona, Avda. Joan XXIII 27, 08028 Barcelona, Spain
- Institute of Neurosciences of the University of Barcelona, University of Barcelona, 08035 Barcelona, Spain
- Spanish Biomedical Research Center in Neurodegenerative Diseases (CIBERNED)-National Institute of Health Carlos III, 28029 Madrid, Spain
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Li W, Yi Q, Shi H. Hippocampal gene expression patterns in Sevoflurane anesthesia associated neurocognitive disorders: A bioinformatic analysis. Front Neurol 2022; 13:1084874. [PMID: 36561300 PMCID: PMC9763458 DOI: 10.3389/fneur.2022.1084874] [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: 10/31/2022] [Accepted: 11/21/2022] [Indexed: 12/12/2022] Open
Abstract
Background Several studies indicate general anesthetics can produce lasting effects on cognitive function. The commonly utilized anesthetic agent Sevoflurane has been implicated in neurodegenerative processes. The present study aimed to identify molecular underpinnings of Sevoflurane anesthesia linked neurocognitive changes by leveraging publically available datasets for bioinformatics analysis. Methods A Sevoflurane anesthesia related gene expression dataset was obtained. Sevoflurane related genes were obtained from the CTD database. Neurocognitive disorders (NCD) related genes were downloaded from DisGeNET and CTD. Intersecting differentially expressed genes between Sevoflurane and NCD were identified as cross-talk genes. A protein-protein interaction (PPI) network was constructed. Hub genes were selected using LASSO regression. Single sample gene set enrichment analysis; functional network analysis, pathway correlations, composite network analysis and drug sensitivity analysis were performed. Results Fourteen intersecting cross-talk genes potentially were identified. These were mainly involved in biological processes including peptidyl-serine phosphorylation, cellular response to starvation, and response to gamma radiation, regulation of p53 signaling pathway, AGE-RAGE signaling pathway and FoxO signaling. Egr1 showed a central role in the PPI network. Cdkn1a, Egr1, Gadd45a, Slc2a1, and Slc3a2 were identified as important or hub cross-talk genes. Among the interacting pathways, Interleukin-10 signaling and NF-kappa B signaling enriched among Sevoflurane-related DEGs were highly correlated with HIF-1 signaling enriched in NCD-related genes. Composite network analysis showed Egr1 interacted with AGE-RAGE signaling and Apelin signaling pathways, Cdkn1a, and Gadd45a. Cdkn1a was implicated in in FoxO signaling, PI3K-Akt signaling, ErbB signaling, and Oxytocin signaling pathways, and Gadd45a. Gadd45a was involved in NF-kappa B signaling and FoxO signaling pathways. Drug sensitivity analysis showed Egr1 was highly sensitive to GENIPIN. Conclusion A suite of bioinformatics analysis revealed several key candidate hippocampal genes and associated functional signaling pathways that could underlie Sevoflurane associated neurodegenerative processes.
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Affiliation(s)
- Weiwei Li
- Department of Anesthesiology, The Second Affiliated Hospital of the Shandong First Medical University, Taian, China
| | - Qijun Yi
- Department of Oncology, The Second Affiliated Hospital of the Shandong First Medical University, Taian, China
| | - Huijian Shi
- Department of Anesthesiology, The Second Affiliated Hospital of the Shandong First Medical University, Taian, China,*Correspondence: Huijian Shi
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Humayun A, Fornace AJ. GADD45 in Stress Signaling, Cell Cycle Control, and Apoptosis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1360:1-22. [PMID: 35505159 DOI: 10.1007/978-3-030-94804-7_1] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
GADD45 is a gene family consisting of GADD45A, GADD45B, and GADD45G that is often induced by DNA damage and other stress signals associated with growth arrest and apoptosis. Many of these roles are carried out via signaling mediated by p38 mitogen-activated protein kinases (MAPKs). The GADD45 proteins can contribute to p38 activation either by activation of upstream kinase(s) or by direct interaction, as well as suppression of p38 activity in certain cases. In vivo, there are important tissue and cell type specific differences in the roles for GADD45 in MAPK signaling. In addition to being p53-regulated, GADD45A has also been found to contribute to p53 activation via p38. Like other stress and signaling proteins, GADD45 proteins show complex regulation and numerous effectors. More recently, aberrant GADD45 expression has been found in several human cancers, but the mechanisms behind these findings largely remain to be understood.
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Affiliation(s)
- Arslon Humayun
- Lombardi Comprehensive Cancer Center, Washington, DC, USA
| | - Albert J Fornace
- Lombardi Comprehensive Cancer Center, Washington, DC, USA.
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University, Washington, DC, USA.
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Qin X, Chen X, Guo L, Liu J, Yang Y, Zeng Y, Li C, Liu W, Ma W. Hinokiflavone induces apoptosis, cell cycle arrest and autophagy in chronic myeloid leukemia cells through MAPK/NF-κB signaling pathway. BMC Complement Med Ther 2022; 22:100. [PMID: 35387632 PMCID: PMC8988348 DOI: 10.1186/s12906-022-03580-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 03/24/2022] [Indexed: 11/13/2022] Open
Abstract
Background Chronic myeloid leukemia (CML) is a myeloproliferative tumor originating from hematopoietic stem cells, and resistance to tyrosine kinase inhibitors (TKI) has become a major cause of treatment failure. Alternative drug therapy is one of the important ways to overcome TKI resistance. Hinokiflavone (HF) is a C-O-C type biflavonoid with low toxicity and antitumor activity. This study investigated the antitumor effect and possible mechanisms of HF in CML cells. Methods Cell viability was measured by CCK-8 assay. Cell apoptosis and cell cycle distribution were analyzed by flow cytometry. Western blotting was used to assess protein expression levels. Results Our results showed that HF significantly inhibited the viability of K562 cells in a concentration- and time-dependent manner and induced G2/M phase arrest by up-regulating p21 and down-regulating Cdc2 protein. Furthermore, HF induced caspase-dependent apoptosis by activating JNK/p38 MAPK signaling pathway and inhibiting NF-κB activity. In addition, HF induced autophagy by increasing LC3-II expression and p62 degradation. Pretreatment with CQ, a late autophagy inhibitor, significantly increased the levels of LC3-II and p62 proteins and promoted cell survival. Conclusion HF shows a good anti-leukemia effect and is expected to become a potential therapeutic drug for CML. Supplementary Information The online version contains supplementary material available at 10.1186/s12906-022-03580-7.
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Affiliation(s)
- Xiang Qin
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, 999078, Macau, China.,Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Children Hematological Oncology and Birth Defects Laboratory, Sichuan Clinical Research Center for Birth Defects, No. 25, Taiping Street, Jiangyang District, Luzhou, 646000, Sichuan, China
| | - Xi Chen
- Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Children Hematological Oncology and Birth Defects Laboratory, Sichuan Clinical Research Center for Birth Defects, No. 25, Taiping Street, Jiangyang District, Luzhou, 646000, Sichuan, China
| | - Ling Guo
- Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Children Hematological Oncology and Birth Defects Laboratory, Sichuan Clinical Research Center for Birth Defects, No. 25, Taiping Street, Jiangyang District, Luzhou, 646000, Sichuan, China
| | - Jing Liu
- Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Children Hematological Oncology and Birth Defects Laboratory, Sichuan Clinical Research Center for Birth Defects, No. 25, Taiping Street, Jiangyang District, Luzhou, 646000, Sichuan, China
| | - You Yang
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, 999078, Macau, China.,Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Children Hematological Oncology and Birth Defects Laboratory, Sichuan Clinical Research Center for Birth Defects, No. 25, Taiping Street, Jiangyang District, Luzhou, 646000, Sichuan, China
| | - Yan Zeng
- Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Children Hematological Oncology and Birth Defects Laboratory, Sichuan Clinical Research Center for Birth Defects, No. 25, Taiping Street, Jiangyang District, Luzhou, 646000, Sichuan, China
| | - Cheng Li
- Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Children Hematological Oncology and Birth Defects Laboratory, Sichuan Clinical Research Center for Birth Defects, No. 25, Taiping Street, Jiangyang District, Luzhou, 646000, Sichuan, China
| | - Wenjun Liu
- Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Children Hematological Oncology and Birth Defects Laboratory, Sichuan Clinical Research Center for Birth Defects, No. 25, Taiping Street, Jiangyang District, Luzhou, 646000, Sichuan, China.
| | - Wenzhe Ma
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, 999078, Macau, China.
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10
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Lipopolysaccharide Enhances Genotoxicity by Activating GADD45G and NF- κB in Human Corneal Epithelial Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:4328116. [PMID: 35028007 PMCID: PMC8752237 DOI: 10.1155/2022/4328116] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 11/26/2021] [Indexed: 11/23/2022]
Abstract
As the prevalence of microbial keratitis increases, it creates an environment conducive to genotoxicity response. A potential connection between growth arrest and DNA-damage-inducible 45 gamma (GADD45G) gene expression has not been proven in the corneal epithelial cells. The aim of this study was to determine whether lipopolysaccharide (LPS) enhances genotoxicity, DNA damage, and inflammatory responses in human corneal epithelial cells (HCECs) in vitro. In a set of parameters, cytotoxicity, reactive oxygen species, mitochondrial membrane potential, DNA damage, inflammatory response, and apoptosis were assessed. LPS (1, 5, and 10 μg/mL) treated HCECs were increased reactive oxygen species formation, mitochondrial membrane depolarization, and genotoxicity in a concentration-dependent manner. Similarly, NF-κB, PARP1, and TP53 were also overexpressed in the LPS treated HCECs. 24 hours after LPS induction, micronucleus scoring, and proapoptotic factors were also increased. Among them, the GADD45G, NF-κB, and γH2AX were overexpressed both on the mRNA and protein levels in LPS (10 μg/mL) treated HCECs. In our study, we show that the GADD45G signaling can trigger genotoxic instability in HCECs exposed to LPS. Therefore, understanding the factors contributing to infectious keratitis, such as GADD45G, NF-κB, and γH2AX signaling, may help to develop antigenotoxic and anti-inflammatory therapies for corneal dystrophy and epithelial cell remodeling.
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11
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Aluru N, Krick KS, McDonald AM, Karchner SI. Developmental Exposure to PCB153 (2,2',4,4',5,5'-Hexachlorobiphenyl) Alters Circadian Rhythms and the Expression of Clock and Metabolic Genes. Toxicol Sci 2021; 173:41-52. [PMID: 31621872 DOI: 10.1093/toxsci/kfz217] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Polychlorinated biphenyls (PCBs) are highly persistent and ubiquitously distributed environmental pollutants. Based on their chemical structure, PCBs are classified into non-ortho-substituted and ortho-substituted congeners. Non-ortho-substituted PCBs are structurally similar to dioxin and their toxic effects and mode of action are well-established. In contrast, very little is known about the effects of ortho-substituted PCBs, particularly, during early development. The objective of this study is to investigate the effects of exposure to an environmentally prominent ortho-substituted PCB (2,2',4,4',5,5'-hexachlorobiphenyl; PCB153) on zebrafish embryos. We exposed zebrafish embryos to 3 different concentrations of PCB153 starting from 4 to 120 hours post-fertilization (hpf). We quantified gross morphological changes, behavioral phenotypes, gene expression changes, and circadian behavior in the larvae. There were no developmental defects during the exposure period, but starting at 7 dpf, we observed spinal deformity in the 10 μM PCB153 treated group. A total of 633, 2227, and 3378 differentially expressed genes were observed in 0.1 μM (0.036 μg/ml), 1 μM (0.36 μg/ml), and 10 μM (3.6 μg/ml) PCB153-treated embryos, respectively. Of these, 301 genes were common to all treatment groups. KEGG pathway analysis revealed enrichment of genes related to circadian rhythm, FoxO signaling, and insulin resistance pathways. Behavioral analysis revealed that PCB153 exposure significantly alters circadian behavior. Disruption of circadian rhythms has been associated with the development of metabolic and neurological diseases. Thus, understanding the mechanisms of action of environmental chemicals in disrupting metabolism and other physiological processes is essential.
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Affiliation(s)
- Neelakanteswar Aluru
- Biology Department, Woods Hole Center for Oceans and Human Health, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543
| | - Keegan S Krick
- Biology Department, Woods Hole Center for Oceans and Human Health, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543
| | - Adriane M McDonald
- Biology Department, Woods Hole Center for Oceans and Human Health, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543.,Biology Department, Spelman College, Atlanta, Georgia 30314
| | - Sibel I Karchner
- Biology Department, Woods Hole Center for Oceans and Human Health, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543
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12
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Chang MC, Tang CM, Lin YH, Liu HC, Wang TM, Lan WC, Cheng RH, Lin YR, Chang HH, Jeng JH. Toxic mechanisms of Roth801, Canals, microparticles and nanoparticles of ZnO on MG-63 osteoblasts. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 119:111635. [PMID: 33321673 DOI: 10.1016/j.msec.2020.111635] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 10/08/2020] [Accepted: 10/12/2020] [Indexed: 12/23/2022]
Abstract
ZnO eugenol-based materials are widely used for restoration of caries cavity, apical retrograde filling and root canal sealer. Their effects on apical bone healing await investigation. The toxic mechanisms of ZnO particles and nanoparticles to MG-63 osteoblastic cells were studied. We found the different morphology and size of various particles as observed by scanning electron microscope. Particles of Canals and Roth801 were larger than ZnO-205532 microparticles and ZnO-677450 nanoparticles. Four ZnO particles showed cytotoxicity (>25 μg/ml) as analyzed by MTT. Transmission electron microscope found intracellular vacuoles with particle content. Exposure to ZnO particles induced ROS production and cell cycle arrest as studied by DCF and propidium iodide flow cytometry. ZnO particles activated ATM, ATR, Chk1, Chk2, γ-H2AX, ERK and p38 phosphorylation as detected by immunofluorescent staining and western blotting. The protein expression of cdc2, cyclin B1 and cdc25C were decreased, whereas GADD45α and hemeoxygenase-1 (HO-1) were stimulated. ZnO particles' cytotoxicity to MG63 cells was prevented by N-acetylcysteine (NAC), but not CGK733, AZD7762, U0126 and SB203580. ZnO showed little effect on IL-8 and sICAM-1 secretion. These results indicated that ZnO particles are toxic to osteoblasts. ZnO particles' toxicity were related to ROS, and DNA damage responses, checkpoint kinases, cell cycle arrest, ERK and p38 signaling, but not IL-8 and ICAM-1. These results were useful for materials' development and promote apical healing. Dentists should avoid of extruding ZnO-based sealers excessively over root apex and prevent residual ZnO-based retrograde filling materials in apical area during endodontic practice.
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Affiliation(s)
- Mei-Chi Chang
- Chang Gung University of Science and Technology, Kwei-Shan, Taoyuan, Taiwan; Department of Dentistry, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Chia-Mei Tang
- School of Dentistry, National Taiwan University Medical College, Taipei, Taiwan; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan
| | - Yu-Heng Lin
- Department of Dentistry, Chang Gung Memorial Hospital, Linkou, Taiwan
| | | | - Tong-Mei Wang
- School of Dentistry, National Taiwan University Medical College, Taipei, Taiwan; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan
| | - Wen-Chien Lan
- Department of Oral Hygiene Care, Ching Kuo Institute of Management & Health, Keelong, Taiwan
| | - Ru-Hsiu Cheng
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yan-Ru Lin
- School of Dentistry, National Taiwan University Medical College, Taipei, Taiwan; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan
| | - Hsiao-Hua Chang
- School of Dentistry, National Taiwan University Medical College, Taipei, Taiwan; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan.
| | - Jiiang-Huei Jeng
- School of Dentistry, National Taiwan University Medical College, Taipei, Taiwan; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan; School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
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13
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Zhang Y, Zhen C, Yang Q, Ji B. Mathematical modelling of the role of GADD45β in the pathogenesis of multiple myeloma. ROYAL SOCIETY OPEN SCIENCE 2020; 7:192152. [PMID: 32537207 PMCID: PMC7277253 DOI: 10.1098/rsos.192152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 04/15/2020] [Indexed: 05/14/2023]
Abstract
Multiple myeloma (MM) is an incurable disease with relatively high morbidity and mortality rates. Great efforts were made to develop nuclear factor-kappa B (NF-κB)-targeted therapies against MM disease. However, these treatments influence MM cells as well as normal cells, inevitably causing serious side effects. Further research showed that NF-κB signalling promotes the survival of MM cells by interacting with JNK signalling through growth arrest and DNA damage-inducible beta (GADD45β), the downstream module of NF-κB signalling. The GADD45β-targeted intervention was suggested to be an effective and MM cell-specific treatment. However, the underlying mechanism through which GADD45β promotes the survival of MM cells is usually ignored in the previous models. A mathematical model of MM is built in this paper to investigate how NF-κB signalling acts along with JNK signalling through GADD45β and MKK7 to promote the survival of MM cells. The model cannot only mimic the variations in bone cells, the bone volume and MM cells with time, but it can also examine how the NF-κB pathway acts with the JNK pathway to promote the development of MM cells. In addition, the model also investigates the efficacies of GADD45β- and NF-κB-targeted treatments, suggesting that GADD45β-targeted therapy is more effective but has no apparent side effects. The simulation results match the experimental observations. It is anticipated that this model could be employed as a useful tool to initially investigate and even explore potential therapies involving the NF-κB and JNK pathways in the future.
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Affiliation(s)
- Yao Zhang
- School of Control Science and Engineering, Shandong University, Jinan 250061, People's Republic of China
| | - Changqing Zhen
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, People's Republic of China
| | - Qing Yang
- Department of Breast and Thyroid Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, People's Republic of China
| | - Bing Ji
- School of Control Science and Engineering, Shandong University, Jinan 250061, People's Republic of China
- Author for correspondence: Bing Ji e-mail:
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14
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Sabitha R, Nishi K, Gunasekaran VP, Agilan B, David E, Annamalai G, Vinothkumar R, Perumal M, Subbiah L, Ganeshan M. p-Coumaric acid attenuates alcohol exposed hepatic injury through MAPKs, apoptosis and Nrf2 signaling in experimental models. Chem Biol Interact 2020; 321:109044. [PMID: 32151596 DOI: 10.1016/j.cbi.2020.109044] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 02/26/2020] [Accepted: 03/06/2020] [Indexed: 02/07/2023]
Abstract
Overconsumption of alcohol could lead to severe liver injury that connects with oxidative stress, apoptosis, and inflammatory response. Previously, we proved that p-coumaric acid prevents ethanol induced reproductive toxicity; however, p-coumaric acid (PCA) on ethanol mediated hepatotoxicity has not been examined yet. In our work, we sought to study the potential of PCA in contradiction of ethanol induced hepatoxicity which linking with MAPKs, apoptosis, oxidative stress, and Nrf2 signaling. Foremost, we found that PCA could protect ethanol induced both L-02 and HepG2 hepatic cells by inhibiting cytotoxicity, ROS production, mitochondrial depolarization, and nuclear fragmentation. Also, in vivo experiments showed that the ethanol increasing the lipid markers (TBARS, CD) and depletes the antioxidants thereby increased phosphorylation of JNK, ERK, and p38 in rat liver tissues. Interestingly, PCA treatments inhibit ethanol exposed lipid markers and depletion of antioxidants, which directs the inhibition of MAPKs activation in rat liver tissues. We also noticed that the PCA protected ethanol induced apoptosis and liver markers by inhibiting the expression of Bax, caspases; AST, ALT, ALS, and LDH in liver tissue. Overall, the ameliorative consequence of PCA on ethanol induced oxidative stress and apoptosis was achieved by suppressing the expression of CYP2E1 and overexpressing Nrf2 and its target protein HO-1 in rat liver tissue. As a result, PCA was marked to be an effective antioxidant with notable hepatoprotection by inhibiting MAPKs and apoptosis signaling via enhancing Nrf2 signaling.
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Affiliation(s)
- Ramakrishnan Sabitha
- Department of Biomedical Science, Bharathidasan University, Tiruchirappalli, 620024, Tamil Nadu, India
| | - Kumari Nishi
- Department of Biomedical Science, Bharathidasan University, Tiruchirappalli, 620024, Tamil Nadu, India
| | | | - Balupillai Agilan
- Department of Biotechnology, Thiruvalluvar University, Serkadu, 632115, Vellore, Tamil Nadu, India; Department of Biochemistry and Biotechnology, Annnamalai University, Annamalainagar, 608 002, Tamil Nadu, India
| | - Ernest David
- Department of Biotechnology, Thiruvalluvar University, Serkadu, 632115, Vellore, Tamil Nadu, India
| | - Govindhan Annamalai
- Department of Biochemistry and Biotechnology, Annnamalai University, Annamalainagar, 608 002, Tamil Nadu, India
| | - Rajamanickam Vinothkumar
- Key Laboratory of Imaging Diagnosis and Minimally Invasive and Intervention Research, Lishui Hospital, Zhejiang University School of Medicine, Lishui, Zhejiang, China
| | - Malliga Perumal
- Department of Marine Biotechnology, Bharathidasan University, Tiruchirappalli, Tamil Nadu, 620 024, India
| | - Latha Subbiah
- Department of Pharmaceutical Technology, Anna University, Bharathidasan Institute of Technology Campus, Tiruchirappalli, 620 024, Tamil Nadu, India
| | - Mathan Ganeshan
- Department of Biomedical Science, Bharathidasan University, Tiruchirappalli, 620024, Tamil Nadu, India.
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15
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Zhang M, Li Q, Zhou C, Zhao Y, Li R, Zhang Y. Demethyleneberberine attenuates concanavalin A-induced autoimmune hepatitis in mice through inhibition of NF-κB and MAPK signaling. Int Immunopharmacol 2020; 80:106137. [PMID: 31931366 DOI: 10.1016/j.intimp.2019.106137] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 12/17/2019] [Accepted: 12/17/2019] [Indexed: 12/18/2022]
Abstract
Demethyleneberberine (DMB) is a natural product which has been reported to possess mitochondria-targeting anti-oxidative and anti-inflammatory effect. However, the pharmacological action and molecular mechanism of DMB on autoimmune hepatitis (AIH) have not been explored. In this study, AIH was induced by intravenously injecting Con A (20 mg/kg) in mice for 8 h, and DMB protected against Con A-induced AIH, evidenced by obvious reduction of hepatic enzymes in serum and histological lesion. DMB significantly inhibited the infiltration of CD4+ T cell and Kupffer cell as well as the expression of inflammatory cytokines, such as TNF-α, IL-6, IL-1β and IFN-γ by ELISA and qPCR analysis. Western blotting analysis illustrated that DMB remarkably inhibited Con A-induced phosphorylation of IKK, IκB, NF-κB p65, ERK, JNK, p38 MAPK and STAT3 induced by Con A. Moreover, DMB also effectively suppressed hepatic oxidative stress with reduction of MDA and elevation of GSH. Taken together, our findings indicated that DMB could prevent Con A-induced AIH by regulating NF-κB and MAPK signaling, suggesting that DMB can serve as a promising candidate for therapy of AIH.
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Affiliation(s)
- Miao Zhang
- State Key Laboratory of Natural Medicines, Department of Biochemistry, China Pharmaceutical University, Nanjing 211198, China
| | - Qingxia Li
- State Key Laboratory of Natural Medicines, Department of Biochemistry, China Pharmaceutical University, Nanjing 211198, China
| | - Cuisong Zhou
- State Key Laboratory of Natural Medicines, Department of Biochemistry, China Pharmaceutical University, Nanjing 211198, China
| | - Yaxing Zhao
- State Key Laboratory of Natural Medicines, Department of Biochemistry, China Pharmaceutical University, Nanjing 211198, China
| | - Ruiyan Li
- State Key Laboratory of Natural Medicines, Department of Biochemistry, China Pharmaceutical University, Nanjing 211198, China
| | - Yubin Zhang
- State Key Laboratory of Natural Medicines, Department of Biochemistry, China Pharmaceutical University, Nanjing 211198, China.
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16
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Chen L, Karisma VW, Liu H, Zhong L. MicroRNA-300: A Transcellular Mediator in Exosome Regulates Melanoma Progression. Front Oncol 2019; 9:1005. [PMID: 31681565 PMCID: PMC6803498 DOI: 10.3389/fonc.2019.01005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 09/18/2019] [Indexed: 01/11/2023] Open
Abstract
Melanoma is a common and high-mortality skin cancer. Oxidative stress and DNA damage caused by ultraviolet light (UV) are major causative factors of melanoma formation. However, the specific molecular mechanism is still unclear. In this study, 218 dysregulated genes and 104 dysregulated miRNAs in response to UV were screened by analyzing sequencing datasets. Among them, 29 up-regulated miRNAs and 28 down-regulated miRNAs were involved in the melanoma pathway. As the only differential gene in the melanoma pathway, GADD45B severely affects the prognosis of melanoma patients. MiR-300 is the only differentially expressed miRNA that regulates GADD45B. In addition, compared to normal melanocytes, miR-300 was significantly down-regulated in melanoma cells (log FC = −1.63) and exosomes (log FC = −1.34). Among the transcription factors predicted to regulate miR-300, MYC, PPARG, and ZIC2 were significantly up-regulated in melanoma cells, and TP53, JUN, JUNB, FOS, and FOSB interacted with GADD45B. We attempted to reveal the pathogenesis of melanoma and screen new biomarkers by constructing a TF-mRNA-miRNA axis in turn to provide a view for further research.
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Affiliation(s)
- Long Chen
- Bioengineering Institute of Chongqing University, Chongqing, China
| | | | - Huawen Liu
- Three Gorges Central Hospital, Chongqing, China
| | - Li Zhong
- Bioengineering Institute of Chongqing University, Chongqing, China
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17
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The fucoidan from sea cucumber Apostichopus japonicus attenuates lipopolysaccharide-challenged liver injury in C57BL/6J mice. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.103493] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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18
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Camilleri-Robles C, Serras F, Corominas M. Role of D-GADD45 in JNK-Dependent Apoptosis and Regeneration in Drosophila. Genes (Basel) 2019; 10:E378. [PMID: 31109086 PMCID: PMC6562583 DOI: 10.3390/genes10050378] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 05/14/2019] [Accepted: 05/16/2019] [Indexed: 12/11/2022] Open
Abstract
The GADD45 proteins are induced in response to stress and have been implicated in the regulation of several cellular functions, including DNA repair, cell cycle control, senescence, and apoptosis. In this study, we investigate the role of D-GADD45 during Drosophila development and regeneration of the wing imaginal discs. We find that higher expression of D-GADD45 results in JNK-dependent apoptosis, while its temporary expression does not have harmful effects. Moreover, D-GADD45 is required for proper regeneration of wing imaginal discs. Our findings demonstrate that a tight regulation of D-GADD45 levels is required for its correct function both, in development and during the stress response after cell death.
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Affiliation(s)
- Carlos Camilleri-Robles
- Departament de Genètica, Microbiologia i Estadística, Facultat de Biologia and Institut de Biomedicina (IBUB), Universitat de Barcelona, Barcelona 08028, Spain.
| | - Florenci Serras
- Departament de Genètica, Microbiologia i Estadística, Facultat de Biologia and Institut de Biomedicina (IBUB), Universitat de Barcelona, Barcelona 08028, Spain.
| | - Montserrat Corominas
- Departament de Genètica, Microbiologia i Estadística, Facultat de Biologia and Institut de Biomedicina (IBUB), Universitat de Barcelona, Barcelona 08028, Spain.
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19
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Curto P, Riley SP, Simões I, Martinez JJ. Macrophages Infected by a Pathogen and a Non-pathogen Spotted Fever Group Rickettsia Reveal Differential Reprogramming Signatures Early in Infection. Front Cell Infect Microbiol 2019; 9:97. [PMID: 31024862 PMCID: PMC6467950 DOI: 10.3389/fcimb.2019.00097] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 03/22/2019] [Indexed: 12/22/2022] Open
Abstract
Despite their high degree of genomic similarity, different spotted fever group (SFG) Rickettsia are often associated with very different clinical presentations. For example, Rickettsia conorii causes Mediterranean spotted fever, a life-threatening disease for humans, whereas Rickettsia montanensis is associated with limited or no pathogenicity to humans. However, the molecular basis responsible for the different pathogenicity attributes are still not understood. Although killing microbes is a critical function of macrophages, the ability to survive and/or proliferate within phagocytic cells seems to be a phenotypic feature of several intracellular pathogens. We have previously shown that R. conorii and R. montanensis exhibit different intracellular fates within macrophage-like cells. By evaluating early macrophage responses upon insult with each of these rickettsial species, herein we demonstrate that infection with R. conorii results in a profound reprogramming of host gene expression profiles. Transcriptional programs generated upon infection with this pathogenic bacteria point toward a sophisticated ability to evade innate immune signals, by modulating the expression of several anti-inflammatory molecules. Moreover, R. conorii induce the expression of several pro-survival genes, which may result in the ability to prolong host cell survival, thus protecting its replicative niche. Remarkably, R. conorii-infection promoted a robust modulation of different transcription factors, suggesting that an early manipulation of the host gene expression machinery may be key to R. conorii proliferation in THP-1 macrophages. This work provides new insights into the early molecular processes hijacked by a pathogenic SFG Rickettsia to establish a replicative niche in macrophages, opening several avenues of research in host-rickettsiae interactions.
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Affiliation(s)
- Pedro Curto
- Ph.D. Programme in Experimental Biology and Biomedicine, Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
- Institute for Interdisciplinary Research, University of Coimbra, Coimbra, Portugal
- CNC-Center for Neuroscience and Cell Biology, Coimbra, Portugal
- Vector Borne Disease Laboratories, Department of Pathobiological Sciences, LSU School of Veterinary Medicine, Baton Rouge, LA, United States
| | - Sean P. Riley
- Vector Borne Disease Laboratories, Department of Pathobiological Sciences, LSU School of Veterinary Medicine, Baton Rouge, LA, United States
| | - Isaura Simões
- CNC-Center for Neuroscience and Cell Biology, Coimbra, Portugal
- Vector Borne Disease Laboratories, Department of Pathobiological Sciences, LSU School of Veterinary Medicine, Baton Rouge, LA, United States
| | - Juan J. Martinez
- Vector Borne Disease Laboratories, Department of Pathobiological Sciences, LSU School of Veterinary Medicine, Baton Rouge, LA, United States
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20
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Zeng GZ, Wang Z, Zhao LM, Fan JT, Tan NH. NF-κB and JNK mediated apoptosis and G 0/G 1 arrest of HeLa cells induced by rubiarbonol G, an arborinane-type triterpenoid from Rubia yunnanensis. JOURNAL OF ETHNOPHARMACOLOGY 2018; 220:220-227. [PMID: 29097252 DOI: 10.1016/j.jep.2017.10.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 10/08/2017] [Accepted: 10/29/2017] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Rubia yunnanensis is a medicinal plant mainly grown in Yunnan province in Southwest China, and its root named "Xiaohongshen" has been used as a herb in Yunnan for the treatment of cancers. Three major types of chemical components, Rubiaceae-type cyclopeptides, quinones, and triterpenoids, were identified from R. yunnanensis, in which some of compounds including rubiarbonol G (RG), a unique arboriane-type triterpenoid, showed cytotoxicity on cancer cells. But the cytotoxic mechanism of RG has not been reported. AIM OF THE STUDY To investigate the cytotoxic mechanism of RG on cancer cells. MATERIALS AND METHODS RG was evaluated its cytotoxicity on 7 cancer cell lines by the SRB assay, and detected the effect on apoptosis and cell cycle arrest by Annexin V-FITC/PI apoptosis assay and DNA contents analysis. The expression and activity of apoptosis and cell cycle related proteins were also investigated by western blot and caspase activity assay. Furthermore, the effect of RG on NF-κB signaling was also tested by luciferase assay, western blot, and immunofluorescence staining. RESULTS RG showed potent cytotoxicity on 7 human cancer cell lines, whose activity was attributed to apoptosis induction and G0/G1 arrest in HeLa cells. Results from the mechanism study showed that RG promoted the activation of ERK1/2 and JNK pathway in MAPK family, which in turn increased the expression of p53, thereby triggering the G0/G1 arrest through p53/p21/cyclin D1 signaling. Moreover, RG-mediated JNK activation down-regulated the expression of the anti-apoptotic protein Bcl-2, which caused the release of cytochrome c to the cytosol and activated the cleavage of caspase cascade and poly(ADP-ribose) polymerase, thereby inducing apoptosis in HeLa cells. In addition, RG was also found to inhibit the activation of NF-κB signaling by down-regulating the expression and attenuating the translocation to nucleus of NF-κB p65, by which the down-stream p53, cyclin D1, Bcl-2, and caspases were regulated, thereby triggering apoptosis and G0/G1 arrest in HeLa cells. CONCLUSION These results indicated that RG induces mitochondria-mediated apoptosis and G0/G1 cell cycle arrest by activation of JNK signaling as well as inactivation of NF-κB pathway in HeLa cells, which suggests that RG is one of the key active ingredients accounting for the anti-tumor effect of R. yunnanensis.
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Affiliation(s)
- Guang-Zhi Zeng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China; YMU-HKBU Joint Laboratory of Traditional Natural Medicine, Yunnan Minzu University, Kunming 650500, PR China
| | - Zhe Wang
- School of Traditional Chinese Pharmacy and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, PR China; State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China
| | - Li-Mei Zhao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China
| | - Jun-Ting Fan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China
| | - Ning-Hua Tan
- School of Traditional Chinese Pharmacy and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, PR China; State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China.
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21
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Abstract
As obligate intracellular parasites, viruses are dependent on their infected hosts for survival. Consequently, viruses are under enormous selective pressure to utilize available cellular components and processes to their own advantage. As most, if not all, cellular activities are regulated at some level via protein interactions, host protein interaction networks are particularly vulnerable to viral exploitation. Indeed, viral proteins frequently target highly connected “hub” proteins to “hack” the cellular network, defining the molecular basis for viral control over the host. This widespread and successful strategy of network intrusion and exploitation has evolved convergently among numerous genetically distinct viruses as a result of the endless evolutionary arms race between pathogens and hosts. Here we examine the means by which a particularly well-connected viral hub protein, human adenovirus E1A, compromises and exploits the vulnerabilities of eukaryotic protein interaction networks. Importantly, these interactions identify critical regulatory hubs in the human proteome and help define the molecular basis of their function.
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22
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Jia S, Shen M, Zhang F, Xie J. Recent Advances in Momordica charantia: Functional Components and Biological Activities. Int J Mol Sci 2017; 18:E2555. [PMID: 29182587 PMCID: PMC5751158 DOI: 10.3390/ijms18122555] [Citation(s) in RCA: 143] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 11/20/2017] [Accepted: 11/22/2017] [Indexed: 12/16/2022] Open
Abstract
Momordica charantia L. (M. charantia), a member of the Cucurbitaceae family, is widely distributed in tropical and subtropical regions of the world. It has been used in folk medicine for the treatment of diabetes mellitus, and its fruit has been used as a vegetable for thousands of years. Phytochemicals including proteins, polysaccharides, flavonoids, triterpenes, saponins, ascorbic acid and steroids have been found in this plant. Various biological activities of M. charantia have been reported, such as antihyperglycemic, antibacterial, antiviral, antitumor, immunomodulation, antioxidant, antidiabetic, anthelmintic, antimutagenic, antiulcer, antilipolytic, antifertility, hepatoprotective, anticancer and anti-inflammatory activities. However, both in vitro and in vivo studies have also demonstrated that M. charantia may also exert toxic or adverse effects under different conditions. This review addresses the chemical constituents of M. charantia and discusses their pharmacological activities as well as their adverse effects, aimed at providing a comprehensive overview of the phytochemistry and biological activities of M. charantia.
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Affiliation(s)
- Shuo Jia
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
| | - Mingyue Shen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
| | - Fan Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
| | - Jianhua Xie
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
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23
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Jylhävä J, Kananen L, Raitanen J, Marttila S, Nevalainen T, Hervonen A, Jylhä M, Hurme M. Methylomic predictors demonstrate the role of NF-κB in old-age mortality and are unrelated to the aging-associated epigenetic drift. Oncotarget 2017; 7:19228-41. [PMID: 27015559 PMCID: PMC4991378 DOI: 10.18632/oncotarget.8278] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 03/10/2016] [Indexed: 01/24/2023] Open
Abstract
Changes in the DNA methylation (DNAm) landscape have been implicated in aging and cellular senescence. To unravel the role of specific DNAm patterns in late-life survival, we performed genome-wide methylation profiling in nonagenarians (n=111) and determined the performance of the methylomic predictors and conventional risk markers in a longitudinal setting. The survival model containing only the methylomic markers was superior in terms of predictive accuracy compared with the model containing only the conventional predictors or the model containing conventional predictors combined with the methylomic markers. At the 2.55-year follow-up, we identified 19 mortality-associated (false-discovery rate <0.5) CpG sites that mapped to genes functionally clustering around the nuclear factor kappa B (NF-κB) complex. Interestingly, none of the mortality-associated CpG sites overlapped with the established aging-associated DNAm sites. Our results are in line with previous findings on the role of NF-κB in controlling animal life spans and demonstrate the role of this complex in human longevity.
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Affiliation(s)
- Juulia Jylhävä
- Department of Microbiology and Immunology, School of Medicine, University of Tampere, Tampere, Finland.,Gerontology Research Center, University of Tampere, Tampere, Finland
| | - Laura Kananen
- Department of Microbiology and Immunology, School of Medicine, University of Tampere, Tampere, Finland.,Gerontology Research Center, University of Tampere, Tampere, Finland
| | - Jani Raitanen
- School of Health Sciences, University of Tampere, Tampere, Finland.,UKK Institute for Health Promotion Research, Tampere, Finland
| | - Saara Marttila
- Department of Microbiology and Immunology, School of Medicine, University of Tampere, Tampere, Finland.,Gerontology Research Center, University of Tampere, Tampere, Finland
| | - Tapio Nevalainen
- Department of Microbiology and Immunology, School of Medicine, University of Tampere, Tampere, Finland.,Gerontology Research Center, University of Tampere, Tampere, Finland
| | - Antti Hervonen
- Gerontology Research Center, University of Tampere, Tampere, Finland.,School of Health Sciences, University of Tampere, Tampere, Finland
| | - Marja Jylhä
- Gerontology Research Center, University of Tampere, Tampere, Finland.,School of Health Sciences, University of Tampere, Tampere, Finland
| | - Mikko Hurme
- Department of Microbiology and Immunology, School of Medicine, University of Tampere, Tampere, Finland.,Gerontology Research Center, University of Tampere, Tampere, Finland.,Fimlab Laboratories, Tampere, Finland
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24
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Heart function and thoracic aorta gene expression profiling studies of ginseng combined with different herbal medicines in eNOS knockout mice. Sci Rep 2017; 7:15431. [PMID: 29133875 PMCID: PMC5684410 DOI: 10.1038/s41598-017-15819-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 11/02/2017] [Indexed: 02/06/2023] Open
Abstract
Ginseng, a popular herbal remedy, is often used in combination with other drugs to achieve the maximum therapeutic response. Shenfu (SFI) and Shenmai injection (SMI) have been widely used to treat cardiovascular disease in China. Our study explored the cardiovascular protection of SFI and SMI in eNOS knockout mice to investigate the differences and similarities of the two ginseng-combinations. Transthoracic echocardiography was performed to evaluate the left ventricular structure and function at baseline and 3, 7, and 14 days after drug administration. Agilent Gene Expression microarrays were used to demonstrate the gene expression profiling of the thoracic aorta. Ingenuity Pathway Analysis was performed to evaluate the mechanism improved by SFI and SMI in eNOS knockout mice. Both SFI and SMI could modulate Gadd45 Signaling from TOP15 canonical pathways. Moreover, SFI showed a better effect in the early treatment stage and improved myocardial function via GATA4, GATA6 and COL3A1. Meanwhile, SMI exerted better protective effects at the chronic stage, which may be related to endothelium protection by VEGFA and ACE. The advantage of multi-target by drug combination in progression of complex diseases should be noticed. The appropriate adjustment of drug combination could lead to a better accurate medical care in clinic.
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25
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Ueda T, Kohama Y, Kuge A, Kido E, Sakurai H. GADD45 family proteins suppress JNK signaling by targeting MKK7. Arch Biochem Biophys 2017; 635:1-7. [PMID: 29037961 DOI: 10.1016/j.abb.2017.10.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 10/01/2017] [Accepted: 10/11/2017] [Indexed: 01/22/2023]
Abstract
Growth arrest and DNA damage-inducible 45 (GADD45) family genes encode related proteins, including GADD45α, GADD45β, and GADD45γ. In HeLa cells, expression of GADD45 members is differentially regulated under a variety of environmental conditions, but thermal and genotoxic stresses induce the expression of all genes. The heat shock response of GADD45β is mediated by the heat shock transcription factor 1 (HSF1), and GADD45β is necessary for heat stress survival. Heat and genotoxic stress-induced activation of c-Jun N-terminal kinase (JNK) is suppressed by the expression of GADD45 proteins. GADD45 proteins bind the JNK kinase mitogen-activated protein kinase kinase 7 (MKK7) and inhibit its activity, even under normal physiological conditions. Our findings indicate that GADD45 essentially suppresses the MKK7-JNK pathway and suggest that differentially expressed GADD45 family members fine-tune stress-inducible JNK activity.
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Affiliation(s)
- Takumi Ueda
- Division of Health Sciences, Graduate School of Medical Science, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa 920-0942, Japan
| | - Yuri Kohama
- Division of Health Sciences, Graduate School of Medical Science, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa 920-0942, Japan
| | - Ayana Kuge
- Division of Health Sciences, Graduate School of Medical Science, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa 920-0942, Japan
| | - Eriko Kido
- Division of Health Sciences, Graduate School of Medical Science, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa 920-0942, Japan
| | - Hiroshi Sakurai
- Division of Health Sciences, Graduate School of Medical Science, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa 920-0942, Japan.
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26
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Zuo J, Dou DY, Wang HF, Zhu YH, Li Y, Luan JJ. Reactive oxygen species mediated NF-κB/p38 feedback loop implicated in proliferation inhibition of HFLS-RA cells induced by 1,7-dihydroxy-3,4-dimethoxyxanthone. Biomed Pharmacother 2017; 94:1002-1009. [PMID: 28810523 DOI: 10.1016/j.biopha.2017.07.164] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 07/29/2017] [Accepted: 07/30/2017] [Indexed: 12/18/2022] Open
Abstract
1,7-Dihydroxy-3,4-dimethoxyxanthone (XAN) is a bioactive compound isolated from Securidaca inappendiculata Hassk. and exerts the inhibitory effects on fibroblast-like synoviocytes by targeting NF-κB and p38. This study was designed to elucidate mechanisms underlying the divergent regulation on the two pathways in HFLS-RA cells by XAN. Expressions of hallmark proteins and transcription of GADD45α mRNA were determined by Western-blot and RT-qPCR methods, respectively. Fluorescence staining was employed to evaluate intracellular oxidative stress. Effects of XAN and N-acetyl-l-cysteine (NAC) on the proliferation of cells were investigated by MTT assay, and pro-apoptotic effects of XAN were assessed by Annexin V-FITC/PI method. It was found XAN blocked NF-κB signaling in HFLS-RA cells shortly after treatment. Moreover, it up-regulated both transcription and expression of GADD45α, and subsequently activated p38 pathway. As time went on, XAN significantly promoted the generation of reactive oxygen species (ROS), which accompanied with sustained up-regulation of p-p38 and increased apoptosis. 48H later, dual-effects of XAN on NF-κB and p38 were reversed. As activation of p38 and increased apoptosis induced by XAN were antagonized by NAC, they were deemed as ROS mediated effects. Furthermore, the accumulated ROS should also account for the activation of NF-κB in the late stage of treatments via interfering in p38/MSK1/NF-κB feedback. Altogether, these findings suggested XAN-induced ROS contributed great importance to the proliferation inhibition of HFLS-RA cells by mediating NF-κB/p38 feedback loop and apoptosis, which provided us a panoramic view of potential target in the therapy of RA by XAN.
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Affiliation(s)
- Jian Zuo
- Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, 241000, PR China.
| | - De-Yu Dou
- Wannan Medical College, Wuhu, Anhui, 241000, PR China
| | - Hui-Fang Wang
- Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, 241000, PR China
| | - Yan-Hong Zhu
- Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, 241000, PR China
| | - Yan Li
- Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, 241000, PR China
| | - Jia-Jie Luan
- Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, 241000, PR China.
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27
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Shi J, Shan S, Li H, Song G, Li Z. Anti-inflammatory effects of millet bran derived-bound polyphenols in LPS-induced HT-29 cell via ROS/miR-149/Akt/NF-κB signaling pathway. Oncotarget 2017; 8:74582-74594. [PMID: 29088809 PMCID: PMC5650364 DOI: 10.18632/oncotarget.20216] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 06/05/2017] [Indexed: 12/24/2022] Open
Abstract
The pro-inflammatory and anti-inflammatory maladjustment has been acknowledged as one of the chief causations of inflammatory diseases and even cancers. Previous studies showed that plant-derived polyphenolic compounds were the most potent anti-oxidant and anti-inflammatory agents among all natural compounds. The present study indicates that bound polyphenols of inner shell (BPIS) from foxtail millet bran can display anti-inflammatory effects in LPS-induced HT-29 cells and in nude mice. Mechanistically, BPIS restrained the level of various pro-inflammatory cytokines (IL-1β, IL-6, IL-8), and enhanced the expression level of anti-inflammatory cytokine (IL-10) by blocking the nuclear factor-kappaB (NF-κB)-p65 nuclear translocation. Further, we found the elevated miR-149 expression by BPIS-induced ROS accumulation, directly targeted the Akt expression to block NF-κB nuclear translocation. Taken together, these novel findings provide new insights into the development of BPIS as an anti-inflammatory agent via the signaling cascade of ROS/miR-149/Akt/NF-κB axis.
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Affiliation(s)
- Jiangying Shi
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, PR China
| | - Shuhua Shan
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, PR China
| | - Hanqing Li
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, PR China.,College of Life Science, Shanxi University, Taiyuan 030006, China
| | - Guisheng Song
- Department of Medicine, Division of Gastroenterology, University of Minnesota Medical School, Minneapolis, Minnesota, MN 55455, USA
| | - Zhuoyu Li
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, PR China.,College of Life Science, Shanxi University, Taiyuan 030006, China
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28
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Ji CL, Jiang H, Tao MQ, Wu WT, Jiang J, Zuo J. Selective regulation of IKKβ/NF-κB pathway involved in proliferation inhibition of HFLS-RA cells induced by 1,7-dihydroxyl-3,4-dimethoxylxanthone. Kaohsiung J Med Sci 2017; 33:486-495. [PMID: 28962819 DOI: 10.1016/j.kjms.2017.06.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 06/19/2017] [Accepted: 06/20/2017] [Indexed: 01/06/2023] Open
Abstract
Rheumatoid arthritis is a common autoimmune disease, however, available regimes exert little influence on it's long-term prognosis. The aim of the current study is to investigate potential effects of 1,7-dihydroxyl-3,4-dimethoxyl-xanthone (XAN) in HFLS-RA cells and describe the underlying mechanisms of induction of NF-κB activity. Viability of cells was measured by MTT assay. Flow cytometry was employed to assess the pro-apoptotic effects. Modulation on NF-κB signaling was investigated by RT-qPCR, Western-blot and immunofluorescence methods. It was found that XAN induced proliferation inhibition and apoptosis of HFLS-RA cells in the concentration-dependent manner, which were strengthened by pyrrolidinedithiocarbamic acid but antagonized by IKK16. NF-κB signaling was abrogated shortly after the treatment of XAN via various means including mRNA expression, phosphorylation and nuclear translocation, which leaded to up-regulation of p38 and down-regulation of X-linked inhibitor of apoptosis protein. Simultaneous suppressions on p-IKKβ, p-IκB and p-p65 suggested the regulation on NF-κB was IKKβ mediated. Meanwhile, XAN promoted the expression of IKKα, which has a possible connection to pro-apoptotic effects suggested by the up-regulated cleaved PARP. These findings indicated IKKβ/NF-κB mediates the proliferation of HFLS-RA cells inhibited by XAN, and divergent regulations on IKKs could provide synergic effects on the cells' proliferation.
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Affiliation(s)
- Cong-Lan Ji
- Department of Pharmacy, Anhui College of Traditional Chinese Medicine, Wuhu, China
| | - Hui Jiang
- Pharmacy Department, Yijishan Hospital of Wannan Medical College, Wuhu, China
| | - Meng-Qing Tao
- Pharmacy Department, Yijishan Hospital of Wannan Medical College, Wuhu, China
| | - Wei-Ting Wu
- Department of Basic Course, Wuhu Medicine and Health School, Wuhu, China
| | - Jia Jiang
- Pharmacy Department, Yijishan Hospital of Wannan Medical College, Wuhu, China
| | - Jian Zuo
- Pharmacy Department, Yijishan Hospital of Wannan Medical College, Wuhu, China; Anhui Provincial Engineering Technology Research Center of Polysaccharides Drug, Wuhu, China.
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Qin M, Zhang J, Xu C, Peng P, Tan L, Liu S, Huang J. Knockdown of NIK and IKKβ-Binding Protein (NIBP) Reduces Colorectal Cancer Metastasis through Down-Regulation of the Canonical NF-κΒ Signaling Pathway and Suppression of MAPK Signaling Mediated through ERK and JNK. PLoS One 2017; 12:e0170595. [PMID: 28125661 PMCID: PMC5268490 DOI: 10.1371/journal.pone.0170595] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 01/06/2017] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Despite the identification of many signaling pathways involved in colorectal cancer (CRC) tumorigenesis, metastatic CRC still remains one of the major causes of cancer related death. NIK and IKKβ-binding protein (NIBP) is one of the key regulators of the NF-κB signaling pathway, which has been implicated in CRC metastasis. The aim of this study was to investigate the possible role of NIBP in CRC metastasis through its regulation of NF-κΒ and extracellular regulated kinase/c-Janus kinase (ERK/JNK) signaling pathways. METHODS In this study NIBP, phosphorylated (p)-p65, p-ERK1/2, and p-JNK1/2 expression was examined in 130 CRC, and 25 adenoma tissue samples were studied by immunohistochemistry. NIBP shRNA knockdown was performed in HCT116 cells, and NF-κB and ERK/JNK pathway activity was measured after TNF-α stimulation in vitro and in vivo. RESULTS We found that NIBP, p-p65, p-ERK1/2, and p-JNK1/2 expression was higher in late stages of CRC compared to early stages or adenomas. Expression of p-p65, p-IκBα, p-IκBβ, p-ERK1/2, and p-JNK1/2 was inhibited in TNF-α stimulated HCT116 cells following NIBP knockdown. Nevertheless, p-ERK1/2 expression in un-transfected and NIBP knockdown HCT116 cells remained the same in the absence of TNF-α stimulation. Furthermore, cell motility and invasion were reduced in HCT116 cells following NIBP knockdown even after TNF-α treatment. Finally, primary tumor weight and liver metastasis were reduced in nude mice with orthotopically transplanted NIBP knockdown of HCT116 cells. CONCLUSION In conclusion, we demonstrated that NIBP knockdown reduces colorectal cancer metastasis through down-regulation of canonical NF-κΒ signaling and suppression of ERK and JNK signaling.
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Affiliation(s)
- Mengbin Qin
- Department of Gastroenterology, The First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Jinxiu Zhang
- Department of Gastroenterology, The First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Chunyan Xu
- Department of Gastroenterology, The First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Peng Peng
- Department of Gastroenterology, The First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Lin Tan
- Department of Gastroenterology, The First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Shiquan Liu
- Department of Gastroenterology, The First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Jiean Huang
- Department of Gastroenterology, The First Affiliated Hospital, Guangxi Medical University, Nanning, China
- * E-mail:
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30
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Yang TC, Wu PC, Chung IF, Jiang JH, Fann MJ, Kao LS. Cell death caused by the synergistic effects of zinc and dopamine is mediated by a stress sensor gene Gadd45b - implication in the pathogenesis of Parkinson's disease. J Neurochem 2016; 139:120-33. [PMID: 27385273 DOI: 10.1111/jnc.13728] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 07/01/2016] [Accepted: 07/03/2016] [Indexed: 11/30/2022]
Abstract
The pathogenesis of Parkinson's disease (PD) is not completely understood, Zinc (Zn(2+) ) and dopamine (DA) have been shown to involve in the degeneration of dopaminergic cells. By microarray analysis, we identified Gadd45b as a candidate molecule that mediates Zn(2+) and DA-induced cell death; the mRNA and protein levels of Gadd45b are increased by Zn(2+) treatment and raised to an even higher level by Zn(2+) plus DA treatment. Zn(2+) plus DA treatment-induced PC12 cell death was enhanced when there was over-expression of Gadd45b and was decreased by knock down of Gadd45b. MAPK p38 and JNK signaling was able to cross-talk with Gadd45b during Zn(2+) and DA treatment. The synergistic effects of Zn(2+) and DA on PC12 cell death can be accounted for by an activation of the Gadd45b-induced cell death pathway and an inhibition of p38/JNK survival pathway. Furthermore, the in vivo results show that the levels of Gadd45b protein expression and phosphorylation of p38 were increased in the substantia nigra by the infusion of Zn(2+) /DA in the mouse brain and the level of Gadd45b mRNA is significantly higher in the substantia nigra of male PD patients than normal controls. The novel role of Gadd45b and its interactions with JNK and p38 will help our understanding of the pathogenesis of PD and help the development of future treatments for PD. Zinc and dopamine are implicated in the degeneration of dopaminergic neurons. We previously demonstrated that zinc and dopamine induced synergistic effects on PC12 cell death. Results from this study show that these synergistic effects can be accounted for by activation of the Gadd45b-induced cell death pathway and inhibition of the p38/JNK survival pathway. We provide in vitro and in vivo evidence to support a novel role for Gadd45b in the pathogenesis of Parkinson's disease.
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Affiliation(s)
- Tien-Chun Yang
- Department of Life Sciences and Institute of Genome Sciences, National Yang-Ming University, Taipei, Taiwan
| | - Pei-Chun Wu
- Brain Research Center, National Yang-Ming University, Taipei, Taiwan
| | - I-Fang Chung
- Institute of Biomedical Informatics, National Yang-Ming University, Taipei, Taiwan
| | - Jhih-Hang Jiang
- Department of Life Sciences and Institute of Genome Sciences, National Yang-Ming University, Taipei, Taiwan
| | - Ming-Ji Fann
- Department of Life Sciences and Institute of Genome Sciences, National Yang-Ming University, Taipei, Taiwan
| | - Lung-Sen Kao
- Department of Life Sciences and Institute of Genome Sciences, National Yang-Ming University, Taipei, Taiwan. .,Brain Research Center, National Yang-Ming University, Taipei, Taiwan.
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31
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Fuhrmeister J, Zota A, Sijmonsma TP, Seibert O, Cıngır Ş, Schmidt K, Vallon N, de Guia RM, Niopek K, Berriel Diaz M, Maida A, Blüher M, Okun JG, Herzig S, Rose AJ. Fasting-induced liver GADD45β restrains hepatic fatty acid uptake and improves metabolic health. EMBO Mol Med 2016; 8:654-69. [PMID: 27137487 PMCID: PMC4888855 DOI: 10.15252/emmm.201505801] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Recent studies have demonstrated that repeated short‐term nutrient withdrawal (i.e. fasting) has pleiotropic actions to promote organismal health and longevity. Despite this, the molecular physiological mechanisms by which fasting is protective against metabolic disease are largely unknown. Here, we show that, metabolic control, particularly systemic and liver lipid metabolism, is aberrantly regulated in the fasted state in mouse models of metabolic dysfunction. Liver transcript assays between lean/healthy and obese/diabetic mice in fasted and fed states uncovered “growth arrest and DNA damage‐inducible” GADD45β as a dysregulated gene transcript during fasting in several models of metabolic dysfunction including ageing, obesity/pre‐diabetes and type 2 diabetes, in both mice and humans. Using whole‐body knockout mice as well as liver/hepatocyte‐specific gain‐ and loss‐of‐function strategies, we revealed a role for liver GADD45β in the coordination of liver fatty acid uptake, through cytoplasmic retention of FABP1, ultimately impacting obesity‐driven hyperglycaemia. In summary, fasting stress‐induced GADD45β represents a liver‐specific molecular event promoting adaptive metabolic function.
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Affiliation(s)
- Jessica Fuhrmeister
- Joint Research Division Molecular Metabolic Control, German Cancer Research Center, Center for Molecular Biology, Heidelberg University and Heidelberg University Hospital, Heidelberg, Germany
| | - Annika Zota
- Joint Research Division Molecular Metabolic Control, German Cancer Research Center, Center for Molecular Biology, Heidelberg University and Heidelberg University Hospital, Heidelberg, Germany Institute for Diabetes and Cancer (IDC), Helmholtz Center Munich, Neuherberg, Germany Joint Heidelberg-IDC Translational Diabetes Program, Inner Medicine I, Heidelberg University Hospital, Neuherberg, Germany
| | - Tjeerd P Sijmonsma
- Joint Research Division Molecular Metabolic Control, German Cancer Research Center, Center for Molecular Biology, Heidelberg University and Heidelberg University Hospital, Heidelberg, Germany
| | - Oksana Seibert
- Joint Research Division Molecular Metabolic Control, German Cancer Research Center, Center for Molecular Biology, Heidelberg University and Heidelberg University Hospital, Heidelberg, Germany
| | - Şahika Cıngır
- Joint Research Division Molecular Metabolic Control, German Cancer Research Center, Center for Molecular Biology, Heidelberg University and Heidelberg University Hospital, Heidelberg, Germany
| | - Kathrin Schmidt
- Division of Inherited Metabolic Diseases, University Children's Hospital, Heidelberg, Germany
| | - Nicola Vallon
- Joint Research Division Molecular Metabolic Control, German Cancer Research Center, Center for Molecular Biology, Heidelberg University and Heidelberg University Hospital, Heidelberg, Germany
| | - Roldan M de Guia
- Joint Research Division Molecular Metabolic Control, German Cancer Research Center, Center for Molecular Biology, Heidelberg University and Heidelberg University Hospital, Heidelberg, Germany
| | - Katharina Niopek
- Joint Research Division Molecular Metabolic Control, German Cancer Research Center, Center for Molecular Biology, Heidelberg University and Heidelberg University Hospital, Heidelberg, Germany Institute for Diabetes and Cancer (IDC), Helmholtz Center Munich, Neuherberg, Germany Joint Heidelberg-IDC Translational Diabetes Program, Inner Medicine I, Heidelberg University Hospital, Neuherberg, Germany
| | - Mauricio Berriel Diaz
- Joint Research Division Molecular Metabolic Control, German Cancer Research Center, Center for Molecular Biology, Heidelberg University and Heidelberg University Hospital, Heidelberg, Germany Institute for Diabetes and Cancer (IDC), Helmholtz Center Munich, Neuherberg, Germany Joint Heidelberg-IDC Translational Diabetes Program, Inner Medicine I, Heidelberg University Hospital, Neuherberg, Germany
| | - Adriano Maida
- Joint Research Division Molecular Metabolic Control, German Cancer Research Center, Center for Molecular Biology, Heidelberg University and Heidelberg University Hospital, Heidelberg, Germany Institute for Diabetes and Cancer (IDC), Helmholtz Center Munich, Neuherberg, Germany Joint Heidelberg-IDC Translational Diabetes Program, Inner Medicine I, Heidelberg University Hospital, Neuherberg, Germany
| | - Matthias Blüher
- Department of Medicine, University of Leipzig, Leipzig, Germany
| | - Jürgen G Okun
- Division of Inherited Metabolic Diseases, University Children's Hospital, Heidelberg, Germany
| | - Stephan Herzig
- Joint Research Division Molecular Metabolic Control, German Cancer Research Center, Center for Molecular Biology, Heidelberg University and Heidelberg University Hospital, Heidelberg, Germany Institute for Diabetes and Cancer (IDC), Helmholtz Center Munich, Neuherberg, Germany Joint Heidelberg-IDC Translational Diabetes Program, Inner Medicine I, Heidelberg University Hospital, Neuherberg, Germany
| | - Adam J Rose
- Joint Research Division Molecular Metabolic Control, German Cancer Research Center, Center for Molecular Biology, Heidelberg University and Heidelberg University Hospital, Heidelberg, Germany
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Jiang X, An Z, Lu C, Chen Y, Du E, Qi S, Yang K, Zhang Z, Xu Y. The protective role of Nrf2-Gadd45b against antimony-induced oxidative stress and apoptosis in HEK293 cells. Toxicol Lett 2016; 256:11-8. [PMID: 27208483 DOI: 10.1016/j.toxlet.2016.05.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Revised: 05/12/2016] [Accepted: 05/17/2016] [Indexed: 10/21/2022]
Abstract
Antimony (Sb) is one of the most prevalent heavy metals and frequently causes biological toxicity. However, the specific mechanisms by which Sb elicits its toxic effects remains to be fully elucidated. In this study, we found antimony trioxide (Sb2O3) caused a dose-dependent cytotoxicity against HEK293 cells, and Sb2O3-induced excessive reactive oxygen species (ROS) was closely correlated with increased cell apoptosis. Mechanistic investigation manifested that nuclear factor NF-E2-related factor 2 (Nrf2) expression and nuclear translocation were significantly induced under Sb2O3 treatment in HEK293 cells, and Nrf2 knockdown aggregated Sb2O3-induced cell apoptosis. Moreover, elevated Gadd45b expression actives the phosphorylation of MAPKs upon Sb2O3 exposure, whereas Gadd45b knockdown diminished Sb2O3-induced activation of MAPKs and promoted cell apoptosis. In the meantime, however, the antioxidant N-acetylcysteine (NAC) was found to ameliorate Nrf2 expression and nuclear translocation as well as Gadd45b expression and MAPKs activation by repressing Sb2O3-induced ROS production. More importantly, we found Gadd45b was transcriptionally enhanced by Nrf2 through binding to three canonical antioxidant response elements (AREs) within its promoter region. Either Sb2O3 or TBHQ (a selective Nrf2 activator) treatment, Gadd45b expression was significantly increased by luciferase assay. Nrf2 inhibition greatly diminished Gadd45b expression due to reduced binding of Nrf2 in Gadd45b promoter under Sb2O3 treatment. To summarize, this study demonstrated the Nrf2-Gadd45b signaling axis exhibited a protective role in Sb-induced cell apoptosis.
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Affiliation(s)
- Xingkang Jiang
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin 300211, China
| | - Zesheng An
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin 300211, China
| | - Chao Lu
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin 300211, China
| | - Yue Chen
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin 300211, China
| | - E Du
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin 300211, China
| | - Shiyong Qi
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin 300211, China
| | - Kuo Yang
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin 300211, China
| | - Zhihong Zhang
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin 300211, China.
| | - Yong Xu
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin 300211, China.
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Hong L, Sun QF, Xu TY, Wu YH, Zhang H, Fu RQ, Cai FJ, Zhou QQ, Zhou K, Du QW, Zhang D, Xu S, Ding JG. New role and molecular mechanism of Gadd45a in hepatic fibrosis. World J Gastroenterol 2016; 22:2779-2788. [PMID: 26973416 PMCID: PMC4778000 DOI: 10.3748/wjg.v22.i9.2779] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Revised: 08/04/2015] [Accepted: 11/09/2015] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the role of Gadd45a in hepatic fibrosis and the transforming growth factor (TGF)-β/Smad signaling pathway.
METHODS: Wild-type male BALB/c mice were treated with CCl4 to induce a model of chronic liver injury. Hepatic stellate cells (HSCs) were isolated from the liver of BALB/c mice and were treated with small interfering RNAs (siRNAs) targeting Gadd45a or the pcDNA3.1-Gadd45a recombinant plasmid. Cellular α-smooth muscle actin (α-SMA), β-actin, type I collagen, phospho-Smad2, phospho-Smad3, Smad2, Smad3, and Smad4 were detected by Western blots. The mRNA levels of α-SMA, β-actin, and type I collagen were determined by quantitative real-time (qRT)-PCR analyses. Reactive oxygen species production was monitored by flow cytometry using 2,7-dichlorodihydrofluorescein diacetate. Gadd45a, Gadd45b, anti-Gadd45g, type I collagen, and SMA local expression in liver tissue were measured by histologic and immunohistochemical analyses.
RESULTS: Significant downregulation of Gadd45a, but not Gadd45b or Gadd45g, accompanied by activation of the TGF-β/Smad signaling pathways was detected in fibrotic liver tissues of mice and isolated HSCs with chronic liver injury induced by CCl4 treatment. Overexpression of Gadd45a reduced the expression of extracellular matrix proteins and α-SMA in HSCs, whereas transient knockdown of Gadd45a with siRNA reversed this process. Gadd45a inhibited the activity of a plasminogen activator inhibitor-1 promoter construct and (CAGA)9 MLP-Luc, an artificial Smad3/4-specific reporter, as well as reduced the phosphorylation and nuclear translocation of Smad3. Gadd45a showed protective effects by scavenging reactive oxygen species and upregulating antioxidant enzymes.
CONCLUSION: Gadd45a may counteract hepatic fibrosis by regulating the activation of HSCs via the inhibition of TGF-β/Smad signaling.
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GADD45α modulates curcumin sensitivity through c-Abl- and JNK-dependent signaling pathways in a mismatch repair-dependent manner. Mol Cell Biochem 2016; 414:13-22. [PMID: 26833194 DOI: 10.1007/s11010-016-2654-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 01/23/2016] [Indexed: 10/22/2022]
Abstract
Colorectal cancer is a critical health concern because of its incidence as the third most prevalent cancer in the world. Currently, 5-fluorouracil (5-FU), 6-thioguanine, and certain other genotoxic agents are mainstays of treatment; however, patients often die due to emergence of resistant population. Curcumin, a bioactive compound derived from the dietary turmeric (Curcuma longa) is an effective anticancer, anti-inflammatory, and antioxidant agent. Previously, we reported that human colorectal cancer cell lines compromised for mismatch repair (MMR) function exhibit heightened sensitivity to curcumin due to sustained curcumin-induced unrepaired DNA damage compared to proficient population counterparts. In this report, we show that the protein levels of gadd45α, whose transcript levels are increased during DNA damage and stress signals, are upregulated following curcumin treatment in a dose- and time-dependent manner. We further observed that cells compromised for Mlh1 function (HCT116 + Ch2) displayed ~twofold increased GADD45α upregulation compared to similarly treated proficient counterparts (HCT116 + Ch3). Similarly, suppression of Mlh1 using ShRNA increased GADD45α upregulation upon curcumin treatment. On the other hand, suppression of GADD45α using SiRNA-blocked curcumin-induced cell death induction in Mlh1-deficient cells. Moreover, inhibition of Abl through ST571 treatment and its downstream effector JNK through SP600125 treatment blocked GADD45α upregulation and cell death triggered by curcumin. Collective results lead us to conclude that GADD45α modulates curcumin sensitivity through activation of c-Abl > JNK signaling in a mismatch repair-dependent manner.
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Chojnacka K, Zarzycka M, Mruk DD. Biology of the Sertoli Cell in the Fetal, Pubertal, and Adult Mammalian Testis. Results Probl Cell Differ 2016; 58:225-251. [PMID: 27300181 DOI: 10.1007/978-3-319-31973-5_9] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A healthy man typically produces between 50 × 10(6) and 200 × 10(6) spermatozoa per day by spermatogenesis; in the absence of Sertoli cells in the male gonad, this individual would be infertile. In the adult testis, Sertoli cells are sustentacular cells that support germ cell development by secreting proteins and other important biomolecules that are essential for germ cell survival and maturation, establishing the blood-testis barrier, and facilitating spermatozoa detachment at spermiation. In the fetal testis, on the other hand, pre-Sertoli cells form the testis cords, the future seminiferous tubules. However, the role of pre-Sertoli cells in this process is much less clear than the function of Sertoli cells in the adult testis. Within this framework, we provide an overview of the biology of the fetal, pubertal, and adult Sertoli cell, highlighting relevant cell biology studies that have expanded our understanding of mammalian spermatogenesis.
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Affiliation(s)
- Katarzyna Chojnacka
- Center for Biomedical Research, Population Council, 1230 York Avenue, New York, NY, 10065, USA
| | - Marta Zarzycka
- Department of Endocrinology, Institute of Zoology, Jagiellonian University, Krakow, Poland
| | - Dolores D Mruk
- Center for Biomedical Research, Population Council, 1230 York Avenue, New York, NY, 10065, USA.
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The Dual Nature of Nek9 in Adenovirus Replication. J Virol 2015; 90:1931-43. [PMID: 26676776 DOI: 10.1128/jvi.02392-15] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 11/25/2015] [Indexed: 01/10/2023] Open
Abstract
UNLABELLED To successfully replicate in an infected host cell, a virus must overcome sophisticated host defense mechanisms. Viruses, therefore, have evolved a multitude of devices designed to circumvent cellular defenses that would lead to abortive infection. Previous studies have identified Nek9, a cellular kinase, as a binding partner of adenovirus E1A, but the biology behind this association remains a mystery. Here we show that Nek9 is a transcriptional repressor that functions together with E1A to silence the expression of p53-inducible GADD45A gene in the infected cell. Depletion of Nek9 in infected cells reduces virus growth but unexpectedly enhances viral gene expression from the E2 transcription unit, whereas the opposite occurs when Nek9 is overexpressed. Nek9 localizes with viral replication centers, and its depletion reduces viral genome replication, while overexpression enhances viral genome numbers in infected cells. Additionally, Nek9 was found to colocalize with the viral E4 orf3 protein, a repressor of cellular stress response. Significantly, Nek9 was also shown to associate with viral and cellular promoters and appears to function as a transcriptional repressor, representing the first instance of Nek9 playing a role in gene regulation. Overall, these results highlight the complexity of virus-host interactions and identify a new role for the cellular protein Nek9 during infection, suggesting a role for Nek9 in regulating p53 target gene expression. IMPORTANCE In the arms race that exists between a pathogen and its host, each has continually evolved mechanisms to either promote or prevent infection. In order to successfully replicate and spread, a virus must overcome every mechanism that a cell can assemble to block infection. On the other hand, to counter viral spread, cells must have multiple mechanisms to stifle viral replication. In the present study, we add to our understanding of how the human adenovirus is able to circumvent cellular roadblocks to replication. We show that the virus uses a cellular protein, Nek9, in order to block activation of p53-regulated gene GADD45A, which is an important player in stress response and p53-mediated cell cycle arrest. Importantly, our study also identifies Nek9 as a transcriptional repressor.
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Solich J, Kolasa M, Kusmider M, Pabian P, Faron-Gorecka A, Zurawek D, Szafran-Pilch K, Kedracka-Krok S, Jankowska U, Swiderska B, Dziedzicka-Wasylewska M. Life-long norepinephrine transporter (NET) knock-out leads to the increase in the NET mRNA in brain regions rich in norepinephrine terminals. Eur Neuropsychopharmacol 2015; 25:1099-108. [PMID: 26002194 DOI: 10.1016/j.euroneuro.2015.04.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 04/08/2015] [Accepted: 04/10/2015] [Indexed: 11/16/2022]
Abstract
These studies aimed to identify the genes differentially expressed in the frontal cortex of mice bearing a life-long norepinephrine transporter knock-out (NET-KO) and wild-type animals (WT). Differences in gene expression in the mouse frontal cortex were studied using a whole-genome microarray approach. Using an alternative approach, i.e. RT-PCR (reverse transcription polymerase chain reaction) with primers complementary to various exons of the NET gene, as well as TaqMan arrays, the level of mRNA encoding the NET in other brain regions of the NET-KO mice was also examined. The analyses revealed a group of 92 transcripts (27 genes) that differentiated the NET-KO mice from the WT mice. Surprisingly, the studies have shown that the mRNA encoding NET accumulated in the brain regions rich in norepinephrine nerve endings in the NET-KO mice. Because there is no other source of NET mRNA besides the noradrenergic terminals in the brain regions studied, these results might speak in favor of the presence of mRNA in axon terminals. RNA-Binding Protein Immunoprecipitation approach indicated that mRNA encoding NET was detected in the Ago2 protein/mRNA complex. In addition, the amount of Ago2 protein in the frontal cortex was significantly higher in NET-KO mice as compared with that of the WT animals. These results are important for further characterization of the NET-KO mice, which - besides other merits - might serve as a good model to study the fate of truncated mRNA in neurons.
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Affiliation(s)
- Joanna Solich
- Department of Pharmacology, Institute of Pharmacology Polish Academy of Sciences, Smetna 12, 31-343 Krakow, Poland.
| | - Magdalena Kolasa
- Department of Pharmacology, Institute of Pharmacology Polish Academy of Sciences, Smetna 12, 31-343 Krakow, Poland
| | - Maciej Kusmider
- Department of Pharmacology, Institute of Pharmacology Polish Academy of Sciences, Smetna 12, 31-343 Krakow, Poland
| | - Paulina Pabian
- Department of Pharmacology, Institute of Pharmacology Polish Academy of Sciences, Smetna 12, 31-343 Krakow, Poland
| | - Agata Faron-Gorecka
- Department of Pharmacology, Institute of Pharmacology Polish Academy of Sciences, Smetna 12, 31-343 Krakow, Poland
| | - Dariusz Zurawek
- Department of Pharmacology, Institute of Pharmacology Polish Academy of Sciences, Smetna 12, 31-343 Krakow, Poland
| | - Kinga Szafran-Pilch
- Department of Pharmacology, Institute of Pharmacology Polish Academy of Sciences, Smetna 12, 31-343 Krakow, Poland
| | - Sylwia Kedracka-Krok
- Faculty of Biochemistry, Biophysics and Biotechnology of the Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Urszula Jankowska
- Faculty of Biochemistry, Biophysics and Biotechnology of the Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Bianka Swiderska
- Faculty of Biochemistry, Biophysics and Biotechnology of the Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Marta Dziedzicka-Wasylewska
- Department of Pharmacology, Institute of Pharmacology Polish Academy of Sciences, Smetna 12, 31-343 Krakow, Poland
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Ishii S, Hashimoto-Torii K. Impact of prenatal environmental stress on cortical development. Front Cell Neurosci 2015; 9:207. [PMID: 26074774 PMCID: PMC4444817 DOI: 10.3389/fncel.2015.00207] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Accepted: 05/13/2015] [Indexed: 12/31/2022] Open
Abstract
Prenatal exposure of the developing brain to various types of environmental stress increases susceptibility to neuropsychiatric disorders such as autism, attention deficit hyperactivity disorder and schizophrenia. Given that even subtle perturbations by prenatal environmental stress in the cerebral cortex impair the cognitive and memory functions, this review focuses on underlying molecular mechanisms of pathological cortical development. We especially highlight recent works that utilized animal exposure models, human specimens or/and induced Pluripotent Stem (iPS) cells to demonstrate: (1) molecular mechanisms shared by various types of environmental stressors, (2) the mechanisms by which the affected extracortical tissues indirectly impact the cortical development and function, and (3) interaction between prenatal environmental stress and the genetic predisposition of neuropsychiatric disorders. Finally, we discuss current challenges for achieving a comprehensive understanding of the role of environmentally disturbed molecular expressions in cortical maldevelopment, knowledge of which may eventually facilitate discovery of interventions for prenatal environment-linked neuropsychiatric disorders.
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Affiliation(s)
- Seiji Ishii
- Center for Neuroscience Research, Children's National Medical Center, Children's Research Institute Washington, DC, USA
| | - Kazue Hashimoto-Torii
- Center for Neuroscience Research, Children's National Medical Center, Children's Research Institute Washington, DC, USA ; Department of Pediatrics, Pharmacology and Physiology, School of Medicine and Health Sciences, The George Washington University Washington, DC, USA ; Department of Neurobiology, School of Medicine, Kavli Institute for Neuroscience, Yale University New Haven, CT, USA
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Zhu J, Qian W, Wang Y, Gao R, Wang J, Xiao H. Involvement of mitogen-activated protein kinase and NF-κB signaling pathways in perfluorooctane sulfonic acid-induced inflammatory reaction in BV2 microglial cells. J Appl Toxicol 2015; 35:1539-49. [DOI: 10.1002/jat.3119] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 12/15/2014] [Accepted: 12/15/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Jingying Zhu
- Key Lab of Modern Toxicology (NJMU), Ministry of Education, Department of Toxicology, School of Public Health; Nanjing Medical University; Nanjing Jiangsu China
| | - Wenyi Qian
- Key Lab of Modern Toxicology (NJMU), Ministry of Education, Department of Toxicology, School of Public Health; Nanjing Medical University; Nanjing Jiangsu China
| | - Yixin Wang
- Key Lab of Modern Toxicology (NJMU), Ministry of Education, Department of Toxicology, School of Public Health; Nanjing Medical University; Nanjing Jiangsu China
| | - Rong Gao
- Key Lab of Modern Toxicology (NJMU), Ministry of Education, Department of Toxicology, School of Public Health; Nanjing Medical University; Nanjing Jiangsu China
| | - Jun Wang
- Key Lab of Modern Toxicology (NJMU), Ministry of Education, Department of Toxicology, School of Public Health; Nanjing Medical University; Nanjing Jiangsu China
| | - Hang Xiao
- Key Lab of Modern Toxicology (NJMU), Ministry of Education, Department of Toxicology, School of Public Health; Nanjing Medical University; Nanjing Jiangsu China
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Huang HS, Redmond TM, Kubish GM, Gupta S, Thompson RC, Turner DL, Uhler MD. Transcriptional regulatory events initiated by Ascl1 and Neurog2 during neuronal differentiation of P19 embryonic carcinoma cells. J Mol Neurosci 2014; 55:684-705. [PMID: 25189318 DOI: 10.1007/s12031-014-0408-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 08/20/2014] [Indexed: 11/25/2022]
Abstract
As members of the proneural basic-helix-loop-helix (bHLH) family of transcription factors, Ascl1 and Neurog2 direct the differentiation of specific populations of neurons at various times and locations within the developing nervous system. In order to characterize the mechanisms employed by these two bHLH factors, we generated stable, doxycycline-inducible lines of P19 embryonic carcinoma cells that express comparable levels of Ascl1 and Neurog2. Upon induction, both Ascl1 and Neurog2 directed morphological and immunocytochemical changes consistent with initiation of neuronal differentiation. Comparison of Ascl1- and Neurog2-regulated genes by microarray analyses showed both shared and distinct transcriptional changes for each bHLH protein. In both Ascl1- and Neurog2-differentiating cells, repression of Oct4 mRNA levels was accompanied by increased Oct4 promoter methylation. However, DNA demethylation was not detected for genes induced by either bHLH protein. Neurog2-induced genes included glutamatergic marker genes while Ascl1-induced genes included GABAergic marker genes. The Neurog2-specific induction of a gene encoding a protein phosphatase inhibitor, Ppp1r14a, was dependent on distinct, canonical E-box sequences within the Ppp1r14a promoter and the nucleotide sequences within these E-boxes were partially responsible for Neurog2-specific regulation. Our results illustrate multiple novel mechanisms by which Ascl1 and Neurog2 regulate gene repression during neuronal differentiation in P19 cells.
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Affiliation(s)
- Holly S Huang
- Molecular and Behavioral Neuroscience Institute, University of Michigan, 109 Zina Pitcher Pl, Ann Arbor, MI, 48109-2200, USA
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Hsu YC, Huang TY, Chen MJ. Therapeutic ROS targeting of GADD45γ in the induction of G2/M arrest in primary human colorectal cancer cell lines by cucurbitacin E. Cell Death Dis 2014; 5:e1198. [PMID: 24763055 PMCID: PMC4001305 DOI: 10.1038/cddis.2014.151] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 02/21/2014] [Accepted: 03/10/2014] [Indexed: 02/06/2023]
Abstract
Cucurbitacin E (CuE) or α-elaterin is a natural compound previously shown to be an antifeedant as well as a potent chemopreventive agent against several types of cancer. The present study investigated the anticancer effects of CuE on colorectal cancer (CRC) using primary cell lines isolated from five CRC patients in Taiwan, Specifically, we explored the anti-proliferation and cell cycle G2/M arrest induced by CuE in CRC cells. MPM-2 flow cytometry tests show that CuE-treated cells accumulated in metaphase (CuE 2.5-7.5 μM). Results further indicate that CuE produced G2/M arrest as well as the downregulation of CDC2 and cyclin B1 expression and dissociation. Both effects increased proportionally with the dose of CuE; however, the inhibition of proliferation, arrest of mitosis, production of reactive oxygen species (ROS), and loss of mitochondrial membrane potential (ΔΨm) were found to be dependent on the quantity of CuE used to treat the cancer cells. In addition, cell cycle arrest in treated cells coincided with the activation of the gene GADD45(α, β, γ). Incubation with CuE resulted in the binding of GADD45γ to CDC2, which suggests that the delay in CuE-induced mitosis is regulated by the overexpression of GADD45γ. Our findings suggest that, in addition to the known effects on cancer prevention, CuE may have antitumor activities in established CRC.
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Affiliation(s)
- Y-C Hsu
- Graduate Institute of Medical Science, College of Health Sciences, Chang Jung Christian University, Tainan, Taiwan
- Innovative Research Center of Medicine, College of Health Sciences, Chang Jung Christian University, Tainan, Taiwan
| | - T-Y Huang
- Department of Neurosurgery, Tainan Sin-Lau Hospital, Tainan, Taiwan
| | - M-J Chen
- Division of Traumatology, Department of Surgery, Chi Mei Medical Center, Tainan, Taiwan
- Department of Sports Management, College of Leisure and Recreation Management, Chia Nan University of Pharmacy and Science, Tainan, Taiwan
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Salvador JM, Brown-Clay JD, Fornace AJ. Gadd45 in stress signaling, cell cycle control, and apoptosis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 793:1-19. [PMID: 24104470 DOI: 10.1007/978-1-4614-8289-5_1] [Citation(s) in RCA: 244] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The first identified Gadd45 gene, Gadd45a, encodes a ubiquitously expressed protein that is often induced by DNA damage and other stress signals associated with growth arrest and apoptosis. This protein and the other two members of this small gene family, Gadd45b and Gadd45g, have been implicated in a variety of the responses to cell injury including cell cycle checkpoints, apoptosis, and DNA repair. In vivo, many of the prominent roles for the Gadd45 proteins are associated with signaling mediated by p38 mitogen-activated protein kinases (MAPK). Gadd45 proteins can contribute to p38 activation either by activation of upstream kinase(s) or by direct interaction. In vivo, there are important tissue and cell-type-specific differences in the roles for Gadd45 in MAPK signaling. In addition to being p53-regulated, Gadd45a has been found to contribute to p53 activation via p38. Like other stress and signaling proteins, Gadd45 proteins show complex regulation and numerous effectors.
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Affiliation(s)
- Jesús M Salvador
- Department of Immunology and Oncology, Centro Nacional de Biotecnología, (CNB-CSIC) Lab 417, c/Darwin n 3, Campus Cantoblanco, 28049, Madrid, Spain
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Fontes-Oliveira CC, Busquets S, Fuster G, Ametller E, Figueras M, Olivan M, Toledo M, López-Soriano FJ, Qu X, Demuth J, Stevens P, Varbanov A, Wang F, Isfort RJ, Argilés JM. A differential pattern of gene expression in skeletal muscle of tumor-bearing rats reveals dysregulation of excitation-contraction coupling together with additional muscle alterations. Muscle Nerve 2013; 49:233-48. [DOI: 10.1002/mus.23893] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Revised: 04/19/2013] [Accepted: 04/24/2013] [Indexed: 12/31/2022]
Affiliation(s)
- Cibely Cristine Fontes-Oliveira
- Cancer Research Group, Departament de Bioquímica i Biologia Molecular, Facultat de Biologia; Universitat de Barcelona; Diagonal 643 Barcelona 08028 Spain
| | - Sílvia Busquets
- Cancer Research Group, Departament de Bioquímica i Biologia Molecular, Facultat de Biologia; Universitat de Barcelona; Diagonal 643 Barcelona 08028 Spain
- Institut de Biomedicina de la Universitat de Barcelona; Barcelona Spain
| | - Gemma Fuster
- Cancer Research Group, Departament de Bioquímica i Biologia Molecular, Facultat de Biologia; Universitat de Barcelona; Diagonal 643 Barcelona 08028 Spain
| | - Elisabet Ametller
- Cancer Research Group, Departament de Bioquímica i Biologia Molecular, Facultat de Biologia; Universitat de Barcelona; Diagonal 643 Barcelona 08028 Spain
| | - Maite Figueras
- Cancer Research Group, Departament de Bioquímica i Biologia Molecular, Facultat de Biologia; Universitat de Barcelona; Diagonal 643 Barcelona 08028 Spain
| | - Mireia Olivan
- Cancer Research Group, Departament de Bioquímica i Biologia Molecular, Facultat de Biologia; Universitat de Barcelona; Diagonal 643 Barcelona 08028 Spain
| | - Míriam Toledo
- Cancer Research Group, Departament de Bioquímica i Biologia Molecular, Facultat de Biologia; Universitat de Barcelona; Diagonal 643 Barcelona 08028 Spain
| | - Francisco J. López-Soriano
- Cancer Research Group, Departament de Bioquímica i Biologia Molecular, Facultat de Biologia; Universitat de Barcelona; Diagonal 643 Barcelona 08028 Spain
- Institut de Biomedicina de la Universitat de Barcelona; Barcelona Spain
| | - Xiaoyan Qu
- Procter & Gamble; Mason Business Center; 8700 Mason-Montgomery Road Mason Ohio 45040 USA
| | - Jeffrey Demuth
- Procter & Gamble; Mason Business Center; 8700 Mason-Montgomery Road Mason Ohio 45040 USA
| | - Paula Stevens
- Procter & Gamble; Mason Business Center; 8700 Mason-Montgomery Road Mason Ohio 45040 USA
| | - Alex Varbanov
- Procter & Gamble; Mason Business Center; 8700 Mason-Montgomery Road Mason Ohio 45040 USA
| | - Feng Wang
- Procter & Gamble; Mason Business Center; 8700 Mason-Montgomery Road Mason Ohio 45040 USA
| | - Robert J. Isfort
- Procter & Gamble; Mason Business Center; 8700 Mason-Montgomery Road Mason Ohio 45040 USA
| | - Josep M. Argilés
- Cancer Research Group, Departament de Bioquímica i Biologia Molecular, Facultat de Biologia; Universitat de Barcelona; Diagonal 643 Barcelona 08028 Spain
- Institut de Biomedicina de la Universitat de Barcelona; Barcelona Spain
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Guo W, Zhu T, Dong Z, Cui L, Zhang M, Kuang G. Decreased expression and aberrant methylation of Gadd45G is associated with tumor progression and poor prognosis in esophageal squamous cell carcinoma. Clin Exp Metastasis 2013; 30:977-92. [DOI: 10.1007/s10585-013-9597-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2012] [Accepted: 06/07/2013] [Indexed: 10/26/2022]
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Wang L, Xiao X, Li D, Chi Y, Wei P, Wang Y, Ni S, Tan C, Zhou X, Du X. Abnormal expression of GADD45B in human colorectal carcinoma. J Transl Med 2012; 10:215. [PMID: 23110778 PMCID: PMC3495754 DOI: 10.1186/1479-5876-10-215] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Accepted: 10/18/2012] [Indexed: 02/08/2023] Open
Abstract
Background GADD45B is a member of the growth arrest DNA damage-inducible gene family associated with cell growth control, apoptosis, and DNA damage repair response. The aim of this study is to detect the role of GADD45B in colorectal carcinoma (CRC); the area not studied in depth to date. Methods The mRNA and protein levels of GADD45B were examined by Real-Time quantitative PCR (RT-qPCR) and immunohistochemistry (IHC) in CRC tissues and adjacent noncancerous tissues (ANCT). Over-expression plasmids and SiRNA were used to regulate GADD45B expression in CRC cell lines in vitro and flow cytometry and Western blotting were used to detect apoptotic changes. Results The mRNA and protein levels of GADD45B were significantly higher in CRC tissues than those in ANCT (P<0.05). Up-regulation of GADD45B was also correlated with relapse and death of CRC patients (P<0.05). The Kaplan-Meier survival curves indicated that disease-free survival (DFS) was significantly worse in CRC patients who showed GADD45B overexpression. A Cox multivariate analysis revealed that GADD45B overexpression and TNM stage were significant factors affecting patients’ survival. On the other hand, as a tumor suppressor gene, GADD45B amplified from normal colorectal tissues could induce apoptosis in CRC cell lines and may be associated with the p53-mediated apoptotic pathways. Conclusion GADD45B, a tumor suppressor gene potentially through the p53-mediated apoptotic pathways, is paradoxically overexpressed in CRC and as such may play an unappreciated role in tumorigenesis. The exact mechanism of GADD45B inactivation and overexpression requires further investigation. GADD45B could be a potential therapeutic target for CRC treatment in future.
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Affiliation(s)
- Lisha Wang
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China
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Li Y, Chen G, Ma L, Ohms SJ, Sun C, Shannon MF, Fan JY. Plasticity of DNA methylation in mouse T cell activation and differentiation. BMC Mol Biol 2012; 13:16. [PMID: 22642378 PMCID: PMC3386888 DOI: 10.1186/1471-2199-13-16] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Accepted: 05/29/2012] [Indexed: 01/09/2023] Open
Abstract
Background Circulating CD4+ T helper cells are activated through interactions with antigen presenting cells and undergo differentiation into specific T helper cell subsets depending on the type of antigen encountered. In addition, the relative composition of the circulating CD4+ T cell population changes as animals mature with an increased percentage of the population being memory/effector type cells. Results Here, we report on the highly plastic nature of DNA methylation at the genome-wide level as T cells undergo activation, differentiation and aging. Of particular note were the findings that DNA demethylation occurred rapidly following T cell activation and that all differentiated T cell populations displayed lower levels of global methylation than the non-differentiated population. In addition, T cells from older mice had a reduced level of DNA methylation, most likely explained by the increase in the memory/effector cell fraction. Although significant genome-wide changes were observed, changes in DNA methylation at individual genes were restricted to specific cell types. Changes in the expression of enzymes involved in DNA methylation and demethylation reflect in most cases the changes observed in the genome-wide DNA methylation status. Conclusion We have demonstrated that DNA methylation is dynamic and flexible in CD4+ T cells and changes rapidly both in a genome-wide and in a targeted manner during T cell activation, differentiation. These changes are accompanied by parallel changes in the enzymatic complexes that have been implicated in DNA methylation and demethylation implying that the balance between these opposing activities may play a role in the maintaining the methylation profile of a given cell type but also allow flexibility in a cell population that needs to respond rapidly to environmental signals.
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Affiliation(s)
- Yan Li
- College of Animal Science & Technology, Northwest A&F University, Yangling Shaanxi 712100, P. R. China
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Tian Y, Stamova B, Jickling GC, Liu D, Ander BP, Bushnell C, Zhan X, Davis RR, Verro P, Pevec WC, Hedayati N, Dawson DL, Khoury J, Jauch EC, Pancioli A, Broderick JP, Sharp FR. Effects of gender on gene expression in the blood of ischemic stroke patients. J Cereb Blood Flow Metab 2012; 32:780-91. [PMID: 22167233 PMCID: PMC3345909 DOI: 10.1038/jcbfm.2011.179] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This study examined the effects of gender on RNA expression after ischemic stroke (IS). RNA obtained from blood of IS patients (n=51; 153 samples at < or =3, 5, and 24 hours) and from matched controls (n=52) were processed on Affymetrix microarrays. Analyses of covariance for stroke versus control samples were performed separately for both genders and the regulated genes for females compared with males. In all, 242, 227, and 338 male-specific genes were regulated at < or =3, 5, and 24 hours after IS, respectively, of which 59 were regulated at all time points. Overall, 774, 3,437, and 571 female-specific stroke genes were regulated at < or =3, 5, and 24 hours, respectively, of which 152 were regulated at all time points. Male-specific stroke genes were associated with integrin, integrin-liked kinase, actin, tight junction, Wnt/β-catenin, RhoA, fibroblast growth factors (FGF), granzyme, and tumor necrosis factor receptor (TNFR)2 signaling. Female-specific stroke genes were associated with p53, high-mobility group box-1, hypoxia inducible factor (HIF)1α, interleukin (IL)1, IL6, IL12, IL18, acute-phase response, T-helper, macrophage, and estrogen signaling. Cell death signaling was overrepresented in both genders, although the molecules and pathways differed. Gender affects gene expression in the blood of IS patients, which likely implies gender differences in immune, inflammatory, and cell death responses to stroke.
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Affiliation(s)
- Yingfang Tian
- Department of Neurology, the MIND Institute, University of California at Davis, Sacramento, CA, USA.
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Kumar S, Wei C, Thomas CM, Kim IK, Seqqat R, Kumar R, Baker KM, Jones WK, Gupta S. Cardiac-specific genetic inhibition of nuclear factor-κB prevents right ventricular hypertrophy induced by monocrotaline. Am J Physiol Heart Circ Physiol 2012; 302:H1655-66. [DOI: 10.1152/ajpheart.00756.2011] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Uncontrolled pulmonary arterial hypertension (PAH) results in right ventricular (RV) hypertrophy (RVH), progressive RV failure, and low cardiac output leading to increased morbidity and mortality (McLaughlin VV, Archer SL, Badesch DB, Barst RJ, Farber HW, Lindner JR, Mathier MA, McGoon MD, Park MH, Rosenson RS, Rubin LJ, Tapson VF, Varga J. J Am Coll Cardiol 53: 1573–1619, 2009). Although the exact figures of its prevalence are difficult to obtain because of the diversity of identifiable causes, it is estimated that the incidence of pulmonary hypertension is seven to nine cases per million persons in the general population and is most prevalent in the age group of 20–40, occurring more commonly in women than in men (ratio: 1.7 to 1; Rubin LJ. N Engl J Med 336: 111–117, 1997). PAH is characterized by dyspnea, chest pain, and syncope. Unfortunately, there is no cure for this disease and medical regimens are limited (Simon MA. Curr Opin Crit Care 16: 237–243, 2010). PAH leads to adverse remodeling that results in RVH, progressive right heart failure, low cardiac output, and ultimately death if left untreated (Humbert M, Morrell NW, Archer SL, Stenmark KR, MacLean MR, Lang IM, Christman BW, Weir EK, Eickelberg O, Voelkel NF, Rabinovitch M. J Am Coll Cardiol 43: 13S-24S, 2004; Humbert M, Sitbon O, Simonneau G. N Engl J Med 351: 1425–1436, 2004. LaRaia AV, Waxman AB. South Med J 100: 393–399, 2007). As there are no direct tools to assess the onset and progression of PAH and RVH, the disease is often detected in later stages marked by full-blown RVH, with the outcome predominantly determined by the level of increased afterload (D'Alonzo GE, Barst RJ, Ayres SM, Bergofsky EH, Brundage BH, Detre KM, Fishman AP, Goldring RM, Groves BM, Kernis JT, et al. Ann Intern Med 115: 343–349, 1991; Sandoval J, Bauerle O, Palomar A, Gomez A, Martinez-Guerra ML, Beltran M, Guerrero ML. Validation of a prognostic equation Circulation 89: 1733–1744, 1994). Various studies have been performed to assess the genetic, biochemical, and morphological components that contribute to PAH. Despite major advances in the understanding of the pathogenesis of PAH, the molecular mechanism(s) by which PAH promotes RVH and cardiac failure still remains elusive. Of all the mechanisms involved in the pathogenesis, inflammation and oxidative stress remain the core of the etiology of PAH that leads to development of RVH (Dorfmüller P, Perros F, Balabanian K, Humbert M. Eur Respir J 22: 358–363, 2003).
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Affiliation(s)
- Sandeep Kumar
- Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A&M Health Science Center; Scott & White Hospital; Central Texas Veterans Health Care System, Temple, Texas; and
| | - Chuanyu Wei
- Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A&M Health Science Center; Scott & White Hospital; Central Texas Veterans Health Care System, Temple, Texas; and
| | - Candice M. Thomas
- Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A&M Health Science Center; Scott & White Hospital; Central Texas Veterans Health Care System, Temple, Texas; and
| | - Il-Kwon Kim
- Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A&M Health Science Center; Scott & White Hospital; Central Texas Veterans Health Care System, Temple, Texas; and
| | - Rachid Seqqat
- Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A&M Health Science Center; Scott & White Hospital; Central Texas Veterans Health Care System, Temple, Texas; and
| | - Rajesh Kumar
- Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A&M Health Science Center; Scott & White Hospital; Central Texas Veterans Health Care System, Temple, Texas; and
| | - Kenneth M. Baker
- Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A&M Health Science Center; Scott & White Hospital; Central Texas Veterans Health Care System, Temple, Texas; and
| | - W. Keith Jones
- Department of Pharmacology and Cell Biophysics, University of Cincinnati, Cincinnati, Ohio
| | - Sudhiranjan Gupta
- Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A&M Health Science Center; Scott & White Hospital; Central Texas Veterans Health Care System, Temple, Texas; and
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Moskalev AA, Smit-McBride Z, Shaposhnikov MV, Plyusnina EN, Zhavoronkov A, Budovsky A, Tacutu R, Fraifeld VE. Gadd45 proteins: relevance to aging, longevity and age-related pathologies. Ageing Res Rev 2012; 11:51-66. [PMID: 21986581 PMCID: PMC3765067 DOI: 10.1016/j.arr.2011.09.003] [Citation(s) in RCA: 110] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2011] [Revised: 09/25/2011] [Accepted: 09/27/2011] [Indexed: 12/12/2022]
Abstract
The Gadd45 proteins have been intensively studied, in view of their important role in key cellular processes. Indeed, the Gadd45 proteins stand at the crossroad of the cell fates by controlling the balance between cell (DNA) repair, eliminating (apoptosis) or preventing the expansion of potentially dangerous cells (cell cycle arrest, cellular senescence), and maintaining the stem cell pool. However, the biogerontological aspects have not thus far received sufficient attention. Here we analyzed the pathways and modes of action by which Gadd45 members are involved in aging, longevity and age-related diseases. Because of their pleiotropic action, a decreased inducibility of Gadd45 members may have far-reaching consequences including genome instability, accumulation of DNA damage, and disorders in cellular homeostasis - all of which may eventually contribute to the aging process and age-related disorders (promotion of tumorigenesis, immune disorders, insulin resistance and reduced responsiveness to stress). Most recently, the dGadd45 gene has been identified as a longevity regulator in Drosophila. Although further wide-scale research is warranted, it is becoming increasingly clear that Gadd45s are highly relevant to aging, age-related diseases (ARDs) and to the control of life span, suggesting them as potential therapeutic targets in ARDs and pro-longevity interventions.
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Affiliation(s)
- Alexey A Moskalev
- Group of Molecular Radiobiology and Gerontology, Institute of Biology, Komi Science Center of Russian Academy of Sciences.
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