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Yang K, Yu X, Guo Z, Fang Z, Zhang H, Zhang W, Liu C, Ji Y, Dong Z, Gu Q, Yao J, Liu C. PIM1 alleviated liver oxidative stress and NAFLD by regulating the NRF2/HO-1/NQO1 pathway. Life Sci 2024; 349:122714. [PMID: 38735366 DOI: 10.1016/j.lfs.2024.122714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 05/06/2024] [Accepted: 05/09/2024] [Indexed: 05/14/2024]
Abstract
AIMS Non-alcoholic fatty liver disease (NAFLD) has risen as a significant global public health issue, for which vertical sleeve gastrectomy (VSG) has become an effective treatment method. The study sought to elucidate the processes through which PIM1 mitigates the advancement of NAFLD. The Pro-viral integration site for Moloney murine leukemia virus 1 (PIM1) functions as a serine/threonine kinase. Bioinformatics analysis revealed that reduced PIM1 expression in NAFLD. METHODS To further prove the role of PIM1 in NAFLD, an in-depth in vivo experiment was performed, in which male C57BL/6 mice were randomly grouped to receive a normal or high-fat diet for 24 weeks. They were operated or delivered the loaded adeno-associated virus which the PIM1 was overexpressed (AAV-PIM1). In an in vitro experiment, AML12 cells were treated with palmitic acid to induce hepatic steatosis. KEY FINDINGS The results revealed that the VSG surgery and virus delivery of mice alleviated oxidative stress, and apoptosis in vivo. For AML12 cells, the levels of oxidative stress, apoptosis, and lipid metabolism were reduced via PIM1 upregulation. Moreover, ML385 treatment resulted in the downregulation of the NRF2/HO-1/NQO1 signaling cascade, indicating that PIM1 mitigates NAFLD by targeting this pathway. SIGNIFICANCE PIM1 alleviated mice liver oxidative stress and NAFLD induced by high-fat diet by regulating the NRF2/HO-1/NQO1 signaling Pathway.
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Affiliation(s)
- Kai Yang
- Department of General Surgery, Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xiaoxiao Yu
- Department of General Surgery, Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Zihao Guo
- Department of General Surgery, Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Zhihao Fang
- Department of General Surgery, Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Hongyu Zhang
- Department of Neurosurgery, Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Wanyangchuan Zhang
- Department of General Surgery, Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Changxu Liu
- Department of General Surgery, Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yanchao Ji
- Department of General Surgery, Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Zhichao Dong
- Department of General Surgery, Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Qiang Gu
- Department of Neurosurgery, Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Jiahao Yao
- Department of Neurosurgery, Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Chang Liu
- Department of General Surgery, Fourth Affiliated Hospital of Harbin Medical University, Harbin, China.
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2
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Cueto-Ureña C, Ramírez-Expósito MJ, Mayas MD, Carrera-González MP, Godoy-Hurtado A, Martínez-Martos JM. Glutathione Peroxidase gpx1 to gpx8 Genes Expression in Experimental Brain Tumors Reveals Gender-Dependent Patterns. Genes (Basel) 2023; 14:1674. [PMID: 37761814 PMCID: PMC10530768 DOI: 10.3390/genes14091674] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/19/2023] [Accepted: 08/23/2023] [Indexed: 09/29/2023] Open
Abstract
Extensive research efforts in the field of brain tumor studies have led to the reclassification of tumors by the World Health Organization (WHO) and the identification of various molecular subtypes, aimed at enhancing diagnosis and treatment strategies. However, the quest for biomarkers that can provide a deeper understanding of tumor development mechanisms, particularly in the case of gliomas, remains imperative due to their persistently incurable nature. Oxidative stress has been widely recognized as a key mechanism contributing to the formation and progression of malignant tumors, with imbalances in antioxidant defense systems being one of the underlying causes for the excess production of reactive oxygen species (ROS) implicated in tumor initiation. In this study, we investigated the gene expression patterns of the eight known isoforms of glutathione peroxidase (GPx) in brain tissue obtained from male and female control rats, as well as rats with transplacental ethyl nitrosourea (ENU)-induced brain tumors. Employing the delta-delta Ct method for RT-PCR, we observed minimal expression levels of gpx2, gpx5, gpx6, and gpx7 in the brain tissue from the healthy control animals, while gpx3 and gpx8 exhibited moderate expression levels. Notably, gpx1 and gpx4 displayed the highest expression levels. Gender differences were not observed in the expression profiles of these isoforms in the control animals. Conversely, the tumor tissue exhibited elevated relative expression levels in all isoforms, except for gpx4, which remained unchanged, and gpx5, which exhibited alterations solely in female animals. Moreover, except for gpx1, which displayed no gender differences, the relative expression values of gpx2, gpx3, gpx6, gpx7, and gpx8 were significantly higher in the male animals compared to their female counterparts. Hence, the analysis of glutathione peroxidase isoforms may serve as a valuable approach for discerning the behavior of brain tumors in clinical settings.
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Affiliation(s)
- Cristina Cueto-Ureña
- Experimental and Clinical Physiopathology Research Group CTS-1039, Department of Health Sciences, School of Experimental and Health Sciences, University of Jaén, 23071 Jaén, Spain; (C.C.-U.); (M.J.R.-E.); (M.D.M.); (M.P.C.-G.)
| | - María Jesús Ramírez-Expósito
- Experimental and Clinical Physiopathology Research Group CTS-1039, Department of Health Sciences, School of Experimental and Health Sciences, University of Jaén, 23071 Jaén, Spain; (C.C.-U.); (M.J.R.-E.); (M.D.M.); (M.P.C.-G.)
| | - María Dolores Mayas
- Experimental and Clinical Physiopathology Research Group CTS-1039, Department of Health Sciences, School of Experimental and Health Sciences, University of Jaén, 23071 Jaén, Spain; (C.C.-U.); (M.J.R.-E.); (M.D.M.); (M.P.C.-G.)
| | - María Pilar Carrera-González
- Experimental and Clinical Physiopathology Research Group CTS-1039, Department of Health Sciences, School of Experimental and Health Sciences, University of Jaén, 23071 Jaén, Spain; (C.C.-U.); (M.J.R.-E.); (M.D.M.); (M.P.C.-G.)
| | | | - José Manuel Martínez-Martos
- Experimental and Clinical Physiopathology Research Group CTS-1039, Department of Health Sciences, School of Experimental and Health Sciences, University of Jaén, 23071 Jaén, Spain; (C.C.-U.); (M.J.R.-E.); (M.D.M.); (M.P.C.-G.)
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3
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Tsukahara T, Makioka-Itaya Y, Takimoto H, Ijichi T. Oral supplementation of a cell preparation of Enterococcus faecalis strain EC-12 stimulates superoxide dismutase production in the livers of healthy and arthritis-induced mice. J Clin Biochem Nutr 2023; 72:39-45. [PMID: 36777079 PMCID: PMC9899913 DOI: 10.3164/jcbn.22-77] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 09/03/2022] [Indexed: 11/07/2022] Open
Abstract
Hepatitis, a major human chronic inflammation disease, has been linked to oxidative stress, which can be initiated by radicals produced during the oxidative metabolism. Oxidative damage has been also observed in arthritis-induced mice. Here we evaluated whether supplementation of a cell preparation of Enterococcus faecalis EC-12 could induce superoxide dismutase activity and/or damage in the livers of healthy mice or mice with arthritis. In Experiment 1, both healthy and arthritis-induced mice were orally given a saline solution, or a solution with a low (0.2 mg/mouse/day) or a high (2.0 mg/mouse/day) concentration of E. faecalis EC-12 for 49 consecutive days. Manganese superoxide dismutase activity increased in E. faecalis EC-12-supplemented mice but with no arthritis. In Experiment 2, mice received orally either a saline or an E. faecalis EC-12 suspension (10 mg/kg of body weight/day) for 28 consecutive days. No changes in tissues and levels of function markers and 8-hydroxy-2'-deoxyguanosine were observed in mouse livers, inferring that E. faecalis EC-12 supplementation caused no damage. While mRNA expression of copper/zinc superoxide dismutase remained unaltered, that of manganese superoxide dismutase increased in E. faecalis EC-12 administration mice. In conclusion, at least in healthy mice, E. faecalis EC-12 supplementation stimulated manganese superoxide dismutase activity in liver tissues with no side effects.
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Affiliation(s)
- Takamitsu Tsukahara
- Kyoto Institute of Nutrition & Pathology, 7-2 Furuikedani Tachikawa, Ujitawara, Kyoto 610-0231, Japan,To whom correspondence should be addressed. E-mail:
| | - Yuko Makioka-Itaya
- Life Science Division, Combi Corporation, Nishibori, Sakura-ku, Saitama 338-0832, Japan
| | - Hiroaki Takimoto
- Department of Biosciences, School of Science, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan
| | - Tetsuo Ijichi
- Life Science Division, Combi Corporation, Nishibori, Sakura-ku, Saitama 338-0832, Japan
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4
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Identification and Validation of Common Reference Genes for Normalization of Esophageal Squamous Cell Carcinoma Gene Expression Profiles. BIOMED RESEARCH INTERNATIONAL 2022; 2022:9125242. [DOI: 10.1155/2022/9125242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 09/29/2022] [Accepted: 09/30/2022] [Indexed: 11/27/2022]
Abstract
Esophageal squamous cell carcinoma (ESCC) is one of the subtypes of esophageal cancer with Chinese characteristics, and its five-year survival rate is less than 20%. Early diagnosis is beneficial to improving the survival rate of ESCC significantly. Quantitative Real-Time Polymerase Chain Reaction is a high-throughput technique that can quantify tumor-related genes for early diagnosis. Its accuracy largely depends on the stability of the reference gene. There is no systematic scientific basis to demonstrate which reference gene expression is stable in ESCC and no consensus on the selection of internal reference. Therefore, this research used four software programs (The comparative delta-Ct method, GeNorm, NormFinder, and BestKeeper) to evaluate the expression stability of eight candidate reference genes commonly used in other tumor tissues and generated a comprehensive analysis by RefFinder. Randomly selected transcriptome sequencing analysis confirmed the SPP1 gene is closely related to ESCC. It was found that the expression trend of SPP1 obtained by RPS18 and PPIA as internal reference genes were the same as that of sequencing. The results show that RPS18 and PPIA are stable reference genes, and PPIA + RPS18 are a suitable reference gene combination. This is a reference gene report that combines transcriptome sequencing analysis and only focuses on ESCC, which makes the quantification more precise, systematic, and standardized, and promotes gene regulation research and the early diagnosis of ESCC in the future.
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Ferreira WAS, Vitiello GAF, da Silva Medina T, de Oliveira EHC. Comprehensive analysis of epigenetics regulation, prognostic and the correlation with immune infiltrates of GPX7 in adult gliomas. Sci Rep 2022; 12:6442. [PMID: 35440701 PMCID: PMC9018725 DOI: 10.1038/s41598-022-10114-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 03/24/2022] [Indexed: 12/15/2022] Open
Abstract
Gliomas are the most commonly occurring malignant brain tumor characterized by an immunosuppressive microenvironment accompanied by profound epigenetic changes, thus influencing the prognosis. Glutathione peroxidase 7 (GPX7) is essential for regulating reactive oxygen species homeostasis under oxidative stress. However, little is known about the function of GPX7 in gliomas. In this study, we hypothesized that GPX7 methylation status could influence biological functions and local immune responses that ultimately impact prognosis in adult gliomas. We conducted an integrated bioinformatics analysis mining GPX7 DNA methylation status, transcriptional and survival data of glioma patients. We discovered that GPX7 was remarkably increased in glioma tissues and cell lines, and was associated with poor prognosis. This upregulation was significantly linked to clinicopathological and molecular features, besides being expressed in a cell cycle-dependent manner. Our results consistently demonstrated that upregulation of GPX7 is tightly modulated by epigenetic processes, which also impacted the overall survival of patients with low-grade gliomas (LGG). Based on the analysis of biological functions, we found that GPX7 might be involved in immune mechanisms involving both innate and adaptive immunity, type I interferon production and regulation of synaptic transmission in LGG, whereas in GBM, it is mainly related to metabolic regulation of mitochondrial dynamics. We also found that GPX7 strongly correlates with immune cell infiltration and diverse immune cell markers, suggesting its role in tumor-specific immune response and in regulating the migration of immune cell types to the tumor microenvironment. Combining these multiple data, we provided the first evidence regarding the epigenetic-mediated regulatory mechanisms underlying GPX7 activation in gliomas. Furthermore, our study brings key insights into the significant effect of GPX7 in modulating both immune molecules and in immune cell infiltration in the microenvironment of gliomas, which might impact the patient outcome, opening up future opportunities to regulate the local immune response.
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Affiliation(s)
- Wallax Augusto Silva Ferreira
- Laboratory of Cytogenomics and Environmental Mutagenesis, Environment Section (SAMAM), Evandro Chagas Institute (IEC), Ananindeua, Brazil.
| | | | - Tiago da Silva Medina
- Translational Immuno-Oncology Group, International Research Center, A.C. Camargo Cancer Center, São Paulo, Brazil.,National Institute of Science and Technology in Oncogenomics and Therapeutic Innovation, São Paulo, Brazil
| | - Edivaldo Herculano Correa de Oliveira
- Laboratory of Cytogenomics and Environmental Mutagenesis, Environment Section (SAMAM), Evandro Chagas Institute (IEC), Ananindeua, Brazil.,Institute of Exact and Natural Sciences, Faculty of Natural Sciences, Federal University of Pará (UFPA), Belém, Brazil
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Brassea-Pérez E, Hernández-Camacho CJ, Labrada-Martagón V, Vázquez-Medina JP, Gaxiola-Robles R, Zenteno-Savín T. "Oxidative stress induced by phthalates in mammals: State of the art and potential biomarkers". ENVIRONMENTAL RESEARCH 2022; 206:112636. [PMID: 34973198 DOI: 10.1016/j.envres.2021.112636] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 11/20/2021] [Accepted: 12/25/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND Phthalates, plasticizers that are widely used in consumer products including toys, cosmetics, and food containers, have negative effects in liver, kidney, brain, lung and reproductive system of humans and other mammals. OBJECTIVES To summarize, describe and discuss the available information on the effects of phthalate exposure in mammals, with emphasis on oxidative stress, and to suggest potential biomarkers of the health risks associated with phthalate exposure. METHODS An assessment of scientific journals was performed using the PRISMA model for systematic reviews. Manuscripts reporting effects of phthalate exposure on mammalian health published in the last decade were selected according to originality, content, and association to health hazards. RESULTS AND DISCUSSION We identified 25 peer-reviewed articles published between January 1st, 2010 and June 1st, 2021 that fit the aims and selection criteria. Phthalates induce oxidative stress and cell degenerative processes by increasing intracellular reactive species. Antioxidant cytoprotective systems decrease with time of exposure; conversely, oxidative damage markers, including thiobarbituric acid-reactive substances (TBARS), 8-hydroxy-2'-desoxyguanosine (8-OHdG) and malondialdehyde (MDA), increase. Phthalates were associated with endocrine system disfunction, metabolic disorders, infertility, nonviable pregnancy, cell degeneration, growth impairment, tumor development, and cognitive disorders. Phthalates can also aggravate health conditions such as asthma, hepatitis, diabetes, allergies, chronic liver and kidney diseases. Among humans, the more vulnerable subjects to phthalate exposure effects were children and individuals with a prior health condition. CONCLUSION Chronic exposure to phthalates induces oxidative stress in mammals with concomitant adverse effects in reproductive, respiratory, endocrine, circulatory, and central nervous systems in both in vitro and in vivo trials. Oxidative damage markers and phthalate metabolites levels were the most common biomarkers of phthalate exposure effects. Studies in free-ranging and wild mammals are nil. Further studies on the pathways that lead to metabolic disruption are needed to identify potential treatments against phthalate-induced detrimental effects.
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Affiliation(s)
- Elizabeth Brassea-Pérez
- Centro de Investigaciones Biológicas Del Noroeste S.C, Planeación Ambiental y Conservación, Av. Instituto Politécnico Nacional #195, Col. Playa Palo Santa Rita Sur, CP 23096, La Paz, Baja California Sur, Mexico
| | - Claudia J Hernández-Camacho
- Centro Interdisciplinario de Ciencias Marinas. Instituto Politécnico Nacional, Av. Instituto Politécnico Nacional S/n, Col. Playa Palo de Santa Rita Sur, CP 23096, La Paz, Baja California Sur, Mexico
| | - Vanessa Labrada-Martagón
- Facultad de Ciencias, Universidad Autónoma de San Luis Potosí, Av. Chapultepec #1570, Col. Privadas Del Pedregal, CP 78295, San Luis Potosí, San Luis Potosí, Mexico
| | | | - Ramón Gaxiola-Robles
- Centro de Investigaciones Biológicas Del Noroeste S.C, Planeación Ambiental y Conservación, Av. Instituto Politécnico Nacional #195, Col. Playa Palo Santa Rita Sur, CP 23096, La Paz, Baja California Sur, Mexico; Hospital General de Zona No.1. Instituto Mexicano Del Seguro Social, 5 de Febrero y Héroes de La Independencia, Centro, La Paz, Baja California Sur, C.P. 23000, Mexico
| | - Tania Zenteno-Savín
- Centro de Investigaciones Biológicas Del Noroeste S.C, Planeación Ambiental y Conservación, Av. Instituto Politécnico Nacional #195, Col. Playa Palo Santa Rita Sur, CP 23096, La Paz, Baja California Sur, Mexico.
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7
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Ma N, Li S, Lin C, Cheng X, Meng Z. Mesenchymal stem cell conditioned medium attenuates oxidative stress injury in hepatocytes partly by regulating the miR-486-5p/PIM1 axis and the TGF-β/Smad pathway. Bioengineered 2021; 12:6434-6447. [PMID: 34519263 PMCID: PMC8806429 DOI: 10.1080/21655979.2021.1972196] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
This study investigated the role of microRNA (miRNA) miR-486-5p in oxidative stress injury in hepatocytes under the treatment of mesenchymal stem cell conditioned medium (MSC-CM). The oxidative stress injury in hepatocytes (L02) was induced by H2O2. Human umbilical cord blood MSC-CM (UCB-MSC-CM) was prepared. The effects of UCB-MSC-CM on the proliferation, apoptosis, and inflammatory response in L02 cells were detected by Cell Counting Kit-8 (CCK-8) assay, flow cytometry analysis, and enzyme-linked immunosorbent assay (ELISA). Subsequently, the target of miR-486-5p was predicted using bioinformatics analysis, and the possible signaling pathway addressed by miR-486-5p was explored using western blot. We found that miR-486-5p expression was elevated following oxidative stress injury and was reduced after UCB-MSC-CM treatment. UCB-MSC-CM protected L02 cells against H2O2-induced injury by downregulation of miR-486-5p. Proviral integration site for Moloney murine leukemia virus 1 (PIM1) was verified to be targeted by miR-486-5p. UCB-MSC-CM upregulated the expression of PIM1 reduced by H2O2 in L02 cells. Additionally, silencing PIM1 attenuated the protective effects of miR-486-5p downregulation against oxidative stress injury. We further demonstrated that UCB-MSC-CM inhibited the TGF-β/Smad signaling in H2O2-treated L02 cells by the miR-486-5p/PIM1 axis. Overall, UCB-MSC-CM attenuates oxidative stress injury in hepatocytes by downregulating miR-486-5p and upregulating PIM1, which may be related to the inhibition of TGF-β/Smad pathway.
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Affiliation(s)
- Ning Ma
- Department of Hepatobiliary-Pancreatic Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Shuo Li
- Department of Hepatobiliary-Pancreatic Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Chao Lin
- Department of Hepatobiliary-Pancreatic Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Xianbin Cheng
- Department of Gastrointestinal Colorectal and Anal Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Zihui Meng
- Department of Hepatobiliary-Pancreatic Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
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8
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Peroxiredoxins-The Underrated Actors during Virus-Induced Oxidative Stress. Antioxidants (Basel) 2021; 10:antiox10060977. [PMID: 34207367 PMCID: PMC8234473 DOI: 10.3390/antiox10060977] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/09/2021] [Accepted: 06/15/2021] [Indexed: 12/19/2022] Open
Abstract
Enhanced production of reactive oxygen species (ROS) triggered by various stimuli, including viral infections, has attributed much attention in the past years. It has been shown that different viruses that cause acute or chronic diseases induce oxidative stress in infected cells and dysregulate antioxidant its antioxidant capacity. However, most studies focused on catalase and superoxide dismutases, whereas a family of peroxiredoxins (Prdx), the most effective peroxide scavengers, were given little or no attention. In the current review, we demonstrate that peroxiredoxins scavenge hydrogen and organic peroxides at their physiological concentrations at various cell compartments, unlike many other antioxidant enzymes, and discuss their recycling. We also provide data on the regulation of their expression by various transcription factors, as they can be compared with the imprint of viruses on transcriptional machinery. Next, we discuss the involvement of peroxiredoxins in transferring signals from ROS on specific proteins by promoting the oxidation of target cysteine groups, as well as briefly demonstrate evidence of nonenzymatic, chaperone, functions of Prdx. Finally, we give an account of the current state of research of peroxiredoxins for various viruses. These data clearly show that Prdx have not been given proper attention despite all the achievements in general redox biology.
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9
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Buday K, Conrad M. Emerging roles for non-selenium containing ER-resident glutathione peroxidases in cell signaling and disease. Biol Chem 2020; 402:271-287. [PMID: 33055310 DOI: 10.1515/hsz-2020-0286] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 10/08/2020] [Indexed: 12/16/2022]
Abstract
Maintenance of cellular redox control is pivotal for normal cellular functions and cell fate decisions including cell death. Among the key cellular redox systems in mammals, the glutathione peroxidase (GPX) family of proteins is the largest conferring multifaceted functions and affecting virtually all cellular processes. The endoplasmic reticulum (ER)-resident GPXs, designated as GPX7 and GPX8, are the most recently added members of this family of enzymes. Recent studies have provided exciting insights how both enzymes support critical processes of the ER including oxidative protein folding, maintenance of ER redox control by eliminating H2O2, and preventing palmitic acid-induced lipotoxicity. Consequently, numerous pathological conditions, such as neurodegeneration, cancer and metabolic diseases have been linked with altered GPX7 and GPX8 expression. Studies in mice have demonstrated that loss of GPX7 leads to increased differentiation of preadipocytes, increased tumorigenesis and shortened lifespan. By contrast, GPX8 deficiency in mice results in enhanced caspase-4/11 activation and increased endotoxic shock in colitis model. With the increasing recognition that both types of enzymes are dysregulated in various tumor entities in man, we deem a review of the emerging roles played by GPX7 and GPX8 in health and disease development timely and appropriate.
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Affiliation(s)
- Katalin Buday
- Institute of Metabolism and Cell Death, Helmholtz Zentrum München, Ingolstädter Landstr. 1, D-85764Neuherberg, Germany
| | - Marcus Conrad
- Institute of Metabolism and Cell Death, Helmholtz Zentrum München, Ingolstädter Landstr. 1, D-85764Neuherberg, Germany.,National Research Medical University, Laboratory of Experimental Oncology, Ostrovityanova 1, 117997Moscow, Russia
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10
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Zolfaghari Emameh R, Nosrati H, Eftekhari M, Falak R, Khoshmirsafa M. Expansion of Single Cell Transcriptomics Data of SARS-CoV Infection in Human Bronchial Epithelial Cells to COVID-19. Biol Proced Online 2020; 22:16. [PMID: 32754004 PMCID: PMC7377208 DOI: 10.1186/s12575-020-00127-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 06/21/2020] [Indexed: 02/07/2023] Open
Abstract
Background Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the causative agent of coronavirus disease 19 (COVID-19) that was emerged as a new member of coronaviruses since December 2019 in Wuhan, China and then after was spread in all continentals. Since SARS-CoV-2 has shown about 77.5% similarity to SARS-CoV, the transcriptome and immunological regulations of SARS-CoV-2 was expected to have high percentage of overlap with SARS-CoV. Results In this study, we applied the single cell transcriptomics data of human bronchial epithelial cells (2B4 cell line) infected with SARS-CoV, which was annotated in the Expression Atlas database to expand this data to COVID-19. In addition, we employed system biology methods including gene ontology (GO) and Reactome pathway analyses to define functional genes and pathways in the infected cells with SARS-CoV. The transcriptomics analysis on the Expression Atlas database revealed that most genes from infected 2B4 cell line with SARS-CoV were downregulated leading to immune system hyperactivation, induction of signaling pathways, and consequently a cytokine storm. In addition, GO:0016192 (vesicle-mediated transport), GO:0006886 (intracellular protein transport), and GO:0006888 (ER to Golgi vesicle-mediated transport) were shown as top three GOs in the ontology network of infected cells with SARS-CoV. Meanwhile, R-HAS-6807070 (phosphatase and tensin homolog or PTEN regulation) showed the highest association with other Reactome pathways in the network of infected cells with SARS-CoV. PTEN plays a critical role in the activation of dendritic cells, B- and T-cells, and secretion of proinflammatory cytokines, which cooperates with downregulated genes in the promotion of cytokine storm in the COVID-19 patients. Conclusions Based on the high similarity percentage of the transcriptome of SARS-CoV with SARS-CoV-2, the data of immunological regulations, signaling pathways, and proinflammatory cytokines in SARS-CoV infection can be expanded to COVID-19 to have a valid platform for future pharmaceutical and vaccine studies.
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Affiliation(s)
- Reza Zolfaghari Emameh
- Department of Energy and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), 14965/161, Tehran, Iran
| | - Hassan Nosrati
- Department of Materials Engineering, Tarbiat Modares University, Tehran, Iran
| | - Mahyar Eftekhari
- Department of Energy and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), 14965/161, Tehran, Iran
| | - Reza Falak
- Immunology Research Center, Iran University of Medical Sciences, Tehran, Iran.,Immunology Department, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Majid Khoshmirsafa
- Immunology Research Center, Iran University of Medical Sciences, Tehran, Iran.,Immunology Department, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
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11
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Vishwakarma S, Gupta RK, Jakati S, Tyagi M, Pappuru RR, Reddig K, Hendricks G, Volkert MR, Khanna H, Chhablani J, Kaur I. Molecular Assessment of Epiretinal Membrane: Activated Microglia, Oxidative Stress and Inflammation. Antioxidants (Basel) 2020; 9:E654. [PMID: 32717933 PMCID: PMC7465764 DOI: 10.3390/antiox9080654] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 07/17/2020] [Accepted: 07/21/2020] [Indexed: 12/21/2022] Open
Abstract
Fibrocellular membrane or epiretinal membrane (ERM) forms on the surface of the inner limiting membrane (ILM) in the inner retina and alters the structure and function of the retina. ERM formation is frequently observed in ocular inflammatory conditions, such as proliferative diabetic retinopathy (PDR) and retinal detachment (RD). Although peeling of the ERM is used as a surgical intervention, it can inadvertently distort the retina. Our goal is to design alternative strategies to tackle ERMs. As a first step, we sought to determine the composition of the ERMs by identifying the constituent cell-types and gene expression signature in patient samples. Using ultrastructural microscopy and immunofluorescence analyses, we found activated microglia, astrocytes, and Müller glia in the ERMs from PDR and RD patients. Moreover, oxidative stress and inflammation associated gene expression was significantly higher in the RD and PDR membranes as compared to the macular hole samples, which are not associated with inflammation. We specifically detected differential expression of hypoxia inducible factor 1-α (HIF1-α), proinflammatory cytokines, and Notch, Wnt, and ERK signaling pathway-associated genes in the RD and PDR samples. Taken together, our results provide new information to potentially develop methods to tackle ERM formation.
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Affiliation(s)
- Sushma Vishwakarma
- Prof Brien Holden Eye Research Centre, LV Prasad Eye Institute, Hyderabad 500034, India; (S.V.); (R.K.G.)
- Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Rishikesh Kumar Gupta
- Prof Brien Holden Eye Research Centre, LV Prasad Eye Institute, Hyderabad 500034, India; (S.V.); (R.K.G.)
| | - Saumya Jakati
- Ophthalmic Pathology Laboratory, L.V. Prasad Eye Institute, Hyderabad 500034, India;
| | - Mudit Tyagi
- Smt. Kanuri Santhamma Retina Vitreous Centre, L.V. Prasad Eye Institute, Hyderabad 500034, India; (M.T.); (R.R.P.)
| | - Rajeev Reddy Pappuru
- Smt. Kanuri Santhamma Retina Vitreous Centre, L.V. Prasad Eye Institute, Hyderabad 500034, India; (M.T.); (R.R.P.)
| | - Keith Reddig
- Department of Radiology, University of Massachusetts Medical School, Worcester, MA 01655, USA; (K.R.); (G.H.)
| | - Gregory Hendricks
- Department of Radiology, University of Massachusetts Medical School, Worcester, MA 01655, USA; (K.R.); (G.H.)
| | - Michael R. Volkert
- Department of Microbiology & Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01655, USA;
| | - Hemant Khanna
- Department of Ophthalmology & Visual Sciences, University of Massachusetts Medical School, Worcester, MA 01655, USA;
| | - Jay Chhablani
- Smt. Kanuri Santhamma Retina Vitreous Centre, L.V. Prasad Eye Institute, Hyderabad 500034, India; (M.T.); (R.R.P.)
| | - Inderjeet Kaur
- Prof Brien Holden Eye Research Centre, LV Prasad Eye Institute, Hyderabad 500034, India; (S.V.); (R.K.G.)
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