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Tavleeva MM, Rasova EE, Rybak AV, Belykh ES, Fefilova EA, Pnachina EM, Velegzhaninov IO. Dose-Dependent Effect of Mitochondrial Superoxide Dismutase Gene Overexpression on Radioresistance of HEK293T Cells. Int J Mol Sci 2023; 24:17315. [PMID: 38139144 PMCID: PMC10744337 DOI: 10.3390/ijms242417315] [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: 10/15/2023] [Revised: 12/04/2023] [Accepted: 12/08/2023] [Indexed: 12/24/2023] Open
Abstract
Over the last two decades, a multitude of gain-of-function studies have been conducted on genes that encode antioxidative enzymes, including one of the key enzymes, manganese superoxide dismutase (SOD2). The results of such studies are often contradictory, as they strongly depend on many factors, such as the gene overexpression level. In this study, the effect of altering the ectopic expression level of major transcript variants of the SOD2 gene on the radioresistance of HEK293T cells was investigated using CRISPRa technology. A significant increase in cell viability in comparison with the transfection control was detected in cells with moderate SOD2 overexpression after irradiation at 2 Gy, but not at 3 or 5 Gy. A further increase in the level of SOD2 ectopic expression up to 22.5-fold resulted in increased cell viability detectable only after irradiation at 5 Gy. Furthermore, a 15-20-fold increase in SOD2 expression raised the clonogenic survival of cells after irradiation at 5 Gy. Simultaneous overexpression of genes encoding SOD2 and Catalase (CAT) enhanced clonogenic cell survival after irradiation more effectively than separate overexpression of both. In conjunction with the literature data on the suppression of the procarcinogenic effects of superoxide dismutase overexpression by ectopic expression of CAT, the data presented here suggest the potential efficacy of simultaneous overexpression of SOD2 and CAT to reduce oxidative stress occurring in various pathological processes. Moreover, these results illustrate the importance of selecting the degree of SOD2 overexpression to obtain a protective effect.
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Affiliation(s)
- Marina M. Tavleeva
- Institute of Biology of Komi Scientific Centre, Ural Branch of Russian Academy of Sciences, 28b Kommunisticheskaya St., Syktyvkar 167982, Russia; (M.M.T.); (E.E.R.); (A.V.R.); (E.S.B.)
| | - Elena E. Rasova
- Institute of Biology of Komi Scientific Centre, Ural Branch of Russian Academy of Sciences, 28b Kommunisticheskaya St., Syktyvkar 167982, Russia; (M.M.T.); (E.E.R.); (A.V.R.); (E.S.B.)
| | - Anna V. Rybak
- Institute of Biology of Komi Scientific Centre, Ural Branch of Russian Academy of Sciences, 28b Kommunisticheskaya St., Syktyvkar 167982, Russia; (M.M.T.); (E.E.R.); (A.V.R.); (E.S.B.)
| | - Elena S. Belykh
- Institute of Biology of Komi Scientific Centre, Ural Branch of Russian Academy of Sciences, 28b Kommunisticheskaya St., Syktyvkar 167982, Russia; (M.M.T.); (E.E.R.); (A.V.R.); (E.S.B.)
| | - Elizaveta A. Fefilova
- Institute of Cytology, Russian Academy of Sciences, 4 Tikhoretsky Ave., St. Petersburg 194064, Russia;
| | - Elizaveta M. Pnachina
- Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin Ave., Nizhny Novgorod 603950, Russia;
| | - Ilya O. Velegzhaninov
- Institute of Biology of Komi Scientific Centre, Ural Branch of Russian Academy of Sciences, 28b Kommunisticheskaya St., Syktyvkar 167982, Russia; (M.M.T.); (E.E.R.); (A.V.R.); (E.S.B.)
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Chen S, Gong Y, Luo Y, Cao R, Yang J, Cheng L, Gao Y, Zhang H, Chen J, Geng N. Toxic effects and toxicological mechanisms of chlorinated paraffins: A review for insight into species sensitivity and toxicity difference. ENVIRONMENT INTERNATIONAL 2023; 178:108020. [PMID: 37354881 DOI: 10.1016/j.envint.2023.108020] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 05/31/2023] [Accepted: 06/01/2023] [Indexed: 06/26/2023]
Abstract
Chlorinated paraffins (CPs), a group of chlorinated alkane mixtures, are frequently detected in various environmental matrices and human bodies. Recently, CPs have garnered considerable attention owing to their potential to induce health hazards in wildlife and human. Several reviews have discussed short-chain CPs (SCCPs) induced ecological risk; however, a comprehensive understanding of the underlying toxic mechanisms and a comparison among SCCPs, medium-, and long-chain CPs (MCCPs and LCCPs, respectively) are yet to be established. This review summarizes the latest research progress on the toxic effects and the underlying molecular mechanisms of CPs. The main toxicity mechanisms of CPs include activation of several receptors, oxidative stress, disturbance of energy metabolism, and inhibition of gap junction-mediated communication. The sensitivity of different species to CP-mediated toxicities varies markedly, with aquatic organisms exhibiting the highest sensitivity to CP-induced toxicity. The toxicity comparison analysis indicated that MCCPs may be unsafe as potential substitutes for SCCPs.
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Affiliation(s)
- Shuangshuang Chen
- CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China
| | - Yufeng Gong
- Department of Chemistry, University of Toronto, Toronto, ON M5S 3H6, Canada
| | - Yun Luo
- CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Rong Cao
- CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Jiajia Yang
- CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Lin Cheng
- CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yuan Gao
- CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Haijun Zhang
- CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Jiping Chen
- CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Ningbo Geng
- CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
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Li Y, Du X, Li W, Jiang Q, Ye Y, Yang Y, Liu X, Zhao Y, Che X. Two genes related to apoptosis in the hepatopancreas of juvenile prawn, Macrobrachium nipponense: Molecular characterization and transcriptional response to nanoplastic exposure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 877:162863. [PMID: 36931509 DOI: 10.1016/j.scitotenv.2023.162863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/10/2023] [Accepted: 03/10/2023] [Indexed: 05/06/2023]
Abstract
Nanoplastics have been widely found in the global water environment, causing plastic pollution and affecting human beings and numerous organisms. Studies involving freshwater crustacean exposure to nanoplastics, however, are limited. In this study, juvenile prawns (Macrobrachium nipponense) were exposed to 75 nm polystyrene nanoplastics at different concentrations (0, 5, 10, 20, or 40 mg/L) for a 28-d chronic exposure experiment. To study the effects of exposure to nanoplastics on hepatopancreas cell apoptosis, C-Jun N-terminal kinase (JNK) and phosphatidylinositol-4,5-bisphosphate 3-kinase, catalytic subunit alpha (PIK3CA) genes were selected, and hepatotoxic enzyme activities and Toll pathway- and apoptosis-related gene expression were determined. For the first time, full-length Mn-JNK and Mn-PIK3CA cDNAs were cloned from M. nipponense. Homologous comparisons showed that JNK and PIK3CA had conserved functional sequences. The apoptosis rate in the high-concentration nanoplastic group (40 mg/L) was significantly higher than in the low-concentration nanoplastic (5 mg/L) and control groups (0 mg/L). The alanine aminotransferase (ALT), aspartate aminotransferase (AST), glutamyl transpeptidase (GGT) and xanthine oxidase (XOD) enzyme activities in the hepatopancreas increased with exposure to higher concentrations of nanoplastics. In addition, the levels of apoptosis- and Toll pathway-related gene expression and JNK and PIK3CA gene expression were initially increased, then decreased with exposure to higher concentrations of nanoplastics. This study showed that polystyrene nanoplastics activate toll-related pathways leading to apoptosis and hepatopancreas damage, which provides theoretical support for future aquatic toxicological research.
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Affiliation(s)
- Yiming Li
- Fishery Machinery and Instrument Research Institute, Chinese Academy of Fisheries Sciences, Shanghai 200092, China
| | - Xinglin Du
- School of Life Science, East China Normal University, Shanghai 200241, China
| | - Wen Li
- School of Life Science, East China Normal University, Shanghai 200241, China
| | - Qichen Jiang
- Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing 210017, China
| | - Yucong Ye
- School of Life Science, East China Normal University, Shanghai 200241, China
| | - Ying Yang
- School of Life Science, East China Normal University, Shanghai 200241, China
| | - Xingguo Liu
- Fishery Machinery and Instrument Research Institute, Chinese Academy of Fisheries Sciences, Shanghai 200092, China
| | - Yunlong Zhao
- School of Life Science, East China Normal University, Shanghai 200241, China.
| | - Xuan Che
- Fishery Machinery and Instrument Research Institute, Chinese Academy of Fisheries Sciences, Shanghai 200092, China.
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Qu D, Zou X, Liu Z. Propofol modulates glycolysis reprogramming of ovarian tumor via restraining circular RNA-zinc finger RNA-binding protein/microRNA-212-5p/superoxide dismutase 2 axis. Bioengineered 2022; 13:11881-11892. [PMID: 35543376 PMCID: PMC9275929 DOI: 10.1080/21655979.2022.2063649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Metabolic reprogramming refers to the transformation of the whole metabolic network covering glycolysis and mitochondrial metabolism, which is primarily manifested as the Warburg effect and mitochondrial metabolic reprogramming. Propofol (Pro) has been testified to suppress the malignancy of diversified human cancers. Nevertheless, its role in glycolysis is still uncertain. The purpose of this study was to determine whether Pro modulated glycolysis in ovarian cancer (OC) cells. Cell proliferation, apoptosis, migration, and invasion were tested via CCK-8, flow cytometry, and Transwell assays, respectively, and glucose intake, lactic acid, and ATP production were also determined. Pro restrained glycolysis via mediating the circular RNA-zinc finger RNA-binding protein (ZFR)/microRNA (miR)-212-5p/superoxide dismutase 2 (SOD2) axis. Additionally, Pro restrained cancer cell advancement via modulating circ-ZFR/miR-212-5p/SOD2 axis. In short, Pro restrained glycolysis via mediating the circ-ZFR/miR-212-5p/SOD2 axis. These results offered a better theoretical foundation for comprehending the molecular pathology of OC and provided a novel target for OC diagnosis and treatment.
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Affiliation(s)
- DongDong Qu
- Department of Anesthesiology, Jinan Maternal and Child Health Hospital, Jinan City, Shandong Province, China
| | - Xin Zou
- Department of Anesthesiology, Qingdao Women's and Children's Hospital, Qingdao City, Shandong Province, China
| | - ZhiLin Liu
- Department of Anesthesiology, Qingdao Municipal Hospital Affiliated to Qingdao University, Qingdao City, Shandong Province, China
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Zhang Y, Zhang Y, Wang S, Li Q, Cao B, Huang B, Wang T, Guo R, Liu N. SP1-induced lncRNA ZFPM2 antisense RNA 1 (ZFPM2-AS1) aggravates glioma progression via the miR-515-5p/Superoxide dismutase 2 (SOD2) axis. Bioengineered 2021; 12:2299-2310. [PMID: 34077295 PMCID: PMC8806534 DOI: 10.1080/21655979.2021.1934241] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 12/14/2022] Open
Abstract
Glioma is a common life-threatening tumor with high malignancy and high invasiveness. LncRNA ZFPM2 antisense RNA 1 (ZFPM2-AS1) was confirmed to be implicated in numerous tumors, while its biological function and mechanism have not been thoroughly understood in glioma. The gene expression was measured by RT-qPCR. Cell proliferation, cell cycle, and cell apoptosis of glioma cells were validated by CCK-8, colony formation, flow cytometry and TUNEL assays. The effect of ZFPM2-AS1 on tumor growth was verified by in vivo assay. The exploration on ZFPM2-AS1-mediated mechanism was carried out via ChIP, luciferase reporter, and RIP assays. In the present study, ZFPM2-AS1 was demonstrated as a highly-expressed lncRNA in glioma tissues and cells. ZFPM2-AS1 silencing suppressed cell proliferation and cell cycle, but facilitated cell apoptosis. In addition, the inhibitive effect of silenced ZFPM2-AS1 was also observed in tumor growth. Furthermore, we found that SP1 interacted with ZFPM2-AS1 promoter to transcriptionally activate ZFPM2-AS1 expression. Moreover, ZFPM2-AS1 was identified as a competing endogenous RNA (ceRNA) for miR-515-5p to target SOD2. Rescue assays verified that SOD2 overexpression partially abolished the suppressive impact of ZFPM2-AS1 silencing on glioma cell growth. In conclusion, this study corroborated the regulatory mechanism of SP1/ZFPM2-AS1/miR-515-5p/SOD2 axis in glioma, indicating that targeting ZFPM2-AS1 might be an effective way to treat glioma.
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Affiliation(s)
- Yaxuan Zhang
- Department of Neurosurgery, Sir Run Run Hospital, Nanjing Medical University, China
| | - Yin Zhang
- Department of Neurosurgery, Sir Run Run Hospital, Nanjing Medical University, China
| | - Sen Wang
- Department of Neurosurgery, Sir Run Run Hospital, Nanjing Medical University, China
| | - Qingquan Li
- Department of Neurosurgery, The Second Affiliated Hospital of Nanjing Medical University
| | - Boqiang Cao
- Department of Neurosurgery, Sir Run Run Hospital, Nanjing Medical University, China
| | - Baosheng Huang
- Department of Neurosurgery, Sir Run Run Hospital, Nanjing Medical University, China
| | - Tianlu Wang
- Department of Neurosurgery, Sir Run Run Hospital, Nanjing Medical University, China
| | - Ruijuan Guo
- Department of ICU, The Affiliated Sir Run Run Hospital of Nanjing Medical University
| | - Ning Liu
- Department of Neurosurgery, The First Affiliated Hospital of Nanjing Medical University
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Abyadeh M, Gupta V, Chitranshi N, Gupta V, Wu Y, Saks D, Wander Wall R, Fitzhenry MJ, Basavarajappa D, You Y, Salekdeh GH, Haynes PA, Graham SL, Mirzaei M. Mitochondrial dysfunction in Alzheimer's disease - a proteomics perspective. Expert Rev Proteomics 2021; 18:295-304. [PMID: 33874826 DOI: 10.1080/14789450.2021.1918550] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Mitochondrial dysfunction is involved in Alzheimer's disease (AD) pathogenesis. Mitochondria have their own genetic material; however, most of their proteins (∼99%) are synthesized as precursors on cytosolic ribosomes, and then imported into the mitochondria. Therefore, exploring proteome changes in these organelles can yield valuable information and shed light on the molecular mechanisms underlying mitochondrial dysfunction in AD. Here, we review AD-associated mitochondrial changes including the effects of amyloid beta and tau protein accumulation on the mitochondrial proteome. We also discuss the relationship of ApoE genetic polymorphism with mitochondrial changes, and present a meta-analysis of various differentially expressed proteins in the mitochondria in AD.Area covered: Proteomics studies and their contribution to our understanding of mitochondrial dysfunction in AD pathogenesis.Expert opinion: Proteomics has proven to be an efficient tool to uncover various aspects of this complex organelle, which will broaden our understanding of mitochondrial dysfunction in AD. Evidently, mitochondrial dysfunction is an early biochemical event that might play a central role in driving AD pathogenesis.
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Affiliation(s)
- Morteza Abyadeh
- Cell Science Research Center, Department of Molecular Systems Biology, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran Iran
| | - Vivek Gupta
- Department of Clinical Medicine, Macquarie University, Macquarie Park, NSW, Australia
| | - Nitin Chitranshi
- Department of Clinical Medicine, Macquarie University, Macquarie Park, NSW, Australia
| | - Veer Gupta
- School of Medicine, Deakin University, VIC, Australia
| | - Yunqi Wu
- Australian Proteome Analysis Facility, Macquarie University, Macquarie Park, NSW Australia
| | - Danit Saks
- Department of Clinical Medicine, Macquarie University, Macquarie Park, NSW, Australia
| | - Roshana Wander Wall
- Department of Clinical Medicine, Macquarie University, Macquarie Park, NSW, Australia
| | - Matthew J Fitzhenry
- Australian Proteome Analysis Facility, Macquarie University, Macquarie Park, NSW Australia
| | - Devaraj Basavarajappa
- Department of Clinical Medicine, Macquarie University, Macquarie Park, NSW, Australia
| | - Yuyi You
- Department of Clinical Medicine, Macquarie University, Macquarie Park, NSW, Australia
| | - Ghasem H Salekdeh
- Department of Molecular Sciences, Macquarie University, Macquarie Park, NSW, Australia
| | - Paul A Haynes
- Department of Molecular Sciences, Macquarie University, Macquarie Park, NSW, Australia
| | - Stuart L Graham
- Department of Clinical Medicine, Macquarie University, Macquarie Park, NSW, Australia
| | - Mehdi Mirzaei
- Department of Clinical Medicine, Macquarie University, Macquarie Park, NSW, Australia
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