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Ferreyra MR, Romero VL, Fernandez-Hubeid LE, Gonzales-Moreno C, Aschner M, Virgolini MB. Ferrostatin-1 mitigates cellular damage in a ferroptosis-like environment in Caenorhabditis elegans. Toxicol Sci 2024; 200:357-368. [PMID: 38754108 DOI: 10.1093/toxsci/kfae066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024] Open
Abstract
Although iron (Fe) is the most biologically abundant transition metal, it is highly toxic when it accumulates as Fe2+, forming a labile Fe pool and favoring the Fenton reaction. This oxidative scenario leads to a type of caspase-independent programmed cell death, referred to as ferroptosis, where following processes take place: (i) Fe2+ overload, (ii) glutathione peroxidase 4 inactivation, (iii) lipid peroxidation, and (iv) glutathione depletion. The present study sought to evaluate the consequences of Fe2+ administration on ferroptosis induction in Caenorhabditis elegans. We demonstrated higher mortality, increased lipid peroxidation, reduced glutathione peroxidase activity, and morphological damage in dopaminergic neurons upon Fe2+ overload. Pharmacological intervention at the level of lipid peroxidation with ferrostatin-1 (250 μM) mitigated the damage and returned the biochemical parameters to basal levels, revealing the potential of this therapeutical approach. Finally, to assess the relationship between ferroptosis and dopamine in a Parkinsonian background, we evaluated the UA44 worm strain which overexpresses the alpha-synuclein protein in cherry-labeled dopaminergic neurons. We demonstrated that Fe2+ administration reduced lethality associated with similar alterations in biochemical and dopaminergic morphological parameters in wild-type animals. These experiments provide mechanistic-based evidence on the efficacy of a pharmacological approach to mitigate the physiological, biochemical, and morphological consequences of Fe2+ overload. At the same time, they encourage further research on the impact of the combined effects resulting from the genetic background and dopamine signaling in a Parkinsonian phenotype.
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Affiliation(s)
- Melisa R Ferreyra
- Departamento de Farmacología Otto Orsingher, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba , Córdoba X5000HUA, Argentina
| | - Verónica L Romero
- Departamento de Farmacología Otto Orsingher, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba , Córdoba X5000HUA, Argentina
| | - Lucia E Fernandez-Hubeid
- Departamento de Farmacología Otto Orsingher, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba , Córdoba X5000HUA, Argentina
- Instituto de Farmacología Experimental de Córdoba-Consejo Nacional de Investigaciones Científicas y Técnicas (IFEC-CONICET) , Córdoba X5000HUA, Argentina
| | - Candelaria Gonzales-Moreno
- Departamento de Farmacología Otto Orsingher, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba , Córdoba X5000HUA, Argentina
- Instituto de Farmacología Experimental de Córdoba-Consejo Nacional de Investigaciones Científicas y Técnicas (IFEC-CONICET) , Córdoba X5000HUA, Argentina
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, United States
| | - Miriam B Virgolini
- Departamento de Farmacología Otto Orsingher, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba , Córdoba X5000HUA, Argentina
- Instituto de Farmacología Experimental de Córdoba-Consejo Nacional de Investigaciones Científicas y Técnicas (IFEC-CONICET) , Córdoba X5000HUA, Argentina
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Cobley JN, Margaritelis NV, Chatzinikolaou PN, Nikolaidis MG, Davison GW. Ten "Cheat Codes" for Measuring Oxidative Stress in Humans. Antioxidants (Basel) 2024; 13:877. [PMID: 39061945 PMCID: PMC11273696 DOI: 10.3390/antiox13070877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 07/17/2024] [Accepted: 07/18/2024] [Indexed: 07/28/2024] Open
Abstract
Formidable and often seemingly insurmountable conceptual, technical, and methodological challenges hamper the measurement of oxidative stress in humans. For instance, fraught and flawed methods, such as the thiobarbituric acid reactive substances assay kits for lipid peroxidation, rate-limit progress. To advance translational redox research, we present ten comprehensive "cheat codes" for measuring oxidative stress in humans. The cheat codes include analytical approaches to assess reactive oxygen species, antioxidants, oxidative damage, and redox regulation. They provide essential conceptual, technical, and methodological information inclusive of curated "do" and "don't" guidelines. Given the biochemical complexity of oxidative stress, we present a research question-grounded decision tree guide for selecting the most appropriate cheat code(s) to implement in a prospective human experiment. Worked examples demonstrate the benefits of the decision tree-based cheat code selection tool. The ten cheat codes define an invaluable resource for measuring oxidative stress in humans.
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Affiliation(s)
- James N. Cobley
- The University of Dundee, Dundee DD1 4HN, UK
- Ulster University, Belfast BT15 1ED, Northern Ireland, UK;
| | - Nikos V. Margaritelis
- Aristotle University of Thessaloniki, 62122 Serres, Greece; (N.V.M.); (P.N.C.); (M.G.N.)
| | | | - Michalis G. Nikolaidis
- Aristotle University of Thessaloniki, 62122 Serres, Greece; (N.V.M.); (P.N.C.); (M.G.N.)
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3
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Wang X, Lin Z, Tang X, Xie M, Li T, Zhou J. Matrine induces cardiotoxicity by promoting ferroptosis through the Nrf2 antioxidant system in H9c2 cells. Toxicol Lett 2024; 397:11-22. [PMID: 38723914 DOI: 10.1016/j.toxlet.2024.05.001] [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: 02/03/2024] [Revised: 04/19/2024] [Accepted: 05/03/2024] [Indexed: 05/12/2024]
Abstract
Matrine (MT) has shown promising efficacy in various cancers and chronic hepatitis; however, its clinical application is limited because of its side effects. Our previous studies have indicated that MT can induce severe hepatotoxicity and nephrotoxicity. The current study aimed to investigate its cardiotoxicity and potential underlying mechanisms in H9c2 cells. Our results showed that MT induced H9c2 cell death and disrupted the cellular membrane integrity. Moreover, MT decreased glutathione (GSH) and cysteine (Cys) levels, and increased Fe2+, lipid peroxidation, reactive oxygen species (ROS), and MDA levels, ultimately leading to ferroptosis. Interestingly, these phenomena were alleviated by the ferroptosis inhibitor Fer-1, whereas MT-induced ferroptosis was exacerbated by the ferroptosis agonist RSL3. In addition, MT significantly reduced FTH, Nrf2, xCT, GPX4, and FSP1 protein levels and inhibited the transcriptional activity of Nrf2 while increasing TFR1 protein levels. Supplementation with Nrf2 agonist (Dimethyl fumarate, DMF) or selenium (Sodium selenite, SS) and CoQ10 alleviated MT-induced cytotoxic effects in H9c2 cells. These results suggest that ferroptosis, which is mediated by an imbalance in the Nrf2 antioxidant system, is involved in MT-induced cardiac toxicity.
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Affiliation(s)
- Xi Wang
- School of Medicine, Yichun University, 576 XueFu Road, Yuanzhou District, Yichun 336000, PR China
| | - Zixiong Lin
- School of Medicine, Yichun University, 576 XueFu Road, Yuanzhou District, Yichun 336000, PR China
| | - Xinyi Tang
- School of Medicine, Yichun University, 576 XueFu Road, Yuanzhou District, Yichun 336000, PR China
| | - Minjuan Xie
- School of Medicine, Yichun University, 576 XueFu Road, Yuanzhou District, Yichun 336000, PR China
| | - Ting Li
- School of Medicine, Yichun University, 576 XueFu Road, Yuanzhou District, Yichun 336000, PR China
| | - Jie Zhou
- School of Medicine, Yichun University, 576 XueFu Road, Yuanzhou District, Yichun 336000, PR China.
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Nakamura T, Ito J, Mourão ASD, Wahida A, Nakagawa K, Mishima E, Conrad M. A tangible method to assess native ferroptosis suppressor activity. CELL REPORTS METHODS 2024; 4:100710. [PMID: 38401540 PMCID: PMC10985226 DOI: 10.1016/j.crmeth.2024.100710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/12/2024] [Accepted: 01/26/2024] [Indexed: 02/26/2024]
Abstract
Ferroptosis, a regulated cell death hallmarked by unrestrained lipid peroxidation, plays a pivotal role in the pathophysiology of various diseases, making it a promising therapeutic target. Glutathione peroxidase 4 (GPX4) prevents ferroptosis by reducing (phospho)lipid hydroperoxides, yet evaluation of its actual activity has remained arduous. Here, we present a tangible method using affinity-purified GPX4 to capture a snapshot of its native activity. Next to measuring GPX4 activity, this improved method allows for the investigation of mutational GPX4 activity, exemplified by the GPX4U46C mutant lacking selenocysteine at its active site, as well as the evaluation of GPX4 inhibitors, such as RSL3, as a showcase. Furthermore, we apply this method to the second ferroptosis guardian, ferroptosis suppressor protein 1, to validate the newly identified ferroptosis inhibitor WIN62577. Together, these methods open up opportunities for evaluating alternative ferroptosis suppression mechanisms.
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Affiliation(s)
- Toshitaka Nakamura
- Institute of Metabolism and Cell Death, Molecular Targets & Therapeutics Center, Helmholtz Zentrum München, 85764 Neuherberg, Bavaria, Germany
| | - Junya Ito
- Institute of Metabolism and Cell Death, Molecular Targets & Therapeutics Center, Helmholtz Zentrum München, 85764 Neuherberg, Bavaria, Germany; Laboratory of Food Function Analysis, Tohoku University Graduate School of Agricultural Science, Sendai, Miyagi 980-8572, Japan
| | - André Santos Dias Mourão
- Institute of Structural Biology, Molecular Targets & Therapeutics Center, Helmholtz Zentrum München, 85764 Neuherberg, Bavaria, Germany
| | - Adam Wahida
- Institute of Metabolism and Cell Death, Molecular Targets & Therapeutics Center, Helmholtz Zentrum München, 85764 Neuherberg, Bavaria, Germany
| | - Kiyotaka Nakagawa
- Laboratory of Food Function Analysis, Tohoku University Graduate School of Agricultural Science, Sendai, Miyagi 980-8572, Japan
| | - Eikan Mishima
- Institute of Metabolism and Cell Death, Molecular Targets & Therapeutics Center, Helmholtz Zentrum München, 85764 Neuherberg, Bavaria, Germany; Division of Nephrology, Rheumatology and Endocrinology, Tohoku University Graduate School of Medicine, Sendai, Miyagi 980-8574, Japan.
| | - Marcus Conrad
- Institute of Metabolism and Cell Death, Molecular Targets & Therapeutics Center, Helmholtz Zentrum München, 85764 Neuherberg, Bavaria, Germany.
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Yang X, Song W, Gao F, Luo H, Liu P, Tan Z, Zhou J, Wang D, Nie X, Lai C, Shi H, Li X, Zhang D. Superoxide Dismutase Catalyzed Size-Adjustable Selenium Nanoparticles in Saccharomyces boulardii. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:4257-4266. [PMID: 38354318 DOI: 10.1021/acs.jafc.3c08507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Selenium nanoparticles (SeNPs) are important and safe food and feed additives that can be used for dietary supplementation. In this study, a mutagenic strain of Saccharomyces boulardii was employed to obtain biologically synthesized SeNPs (BioSeNPs) with the desired particle size by controlling the dosage and duration of sodium selenite addition, and the average particle size achieved was 55.8 nm with protease A encapsulation. Transcriptomic analysis revealed that increased expression of superoxide dismutase 1 (SOD1) in the mutant strain effectively promoted the synthesis of BioSeNPs and the formation of smaller nanoparticles. Under sodium selenite stress, the mutant strain exhibited significantly increased expression of glutathione peroxidase 2 (GPx2), which was significantly greater in the mutant strain than in the wild type, facilitating the synthesis of glutathione selenol and providing abundant substrates for the production of BioSeNPs. Furthermore, based on the experimental results and transcriptomic analysis of relevant genes such as sod1, gpx2, the thioredoxin reductase 1 gene (trr1) and the thioredoxin reductase 2 gene (trr2), a yeast model for the size-controlled synthesis of BioSeNPs was constructed. This study provides an important theoretical and practical foundation for the green synthesis of controllable-sized BioSeNPs or other metal nanoparticles with potential applications in the fields of food, feed, and biomedicine.
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Affiliation(s)
- Xurui Yang
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, Jiangsu 223003, China
| | - Wancheng Song
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, Jiangsu 223003, China
| | - Feng Gao
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, Jiangsu 223003, China
| | - Hongzhen Luo
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, Jiangsu 223003, China
| | - Pei Liu
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, Jiangsu 223003, China
| | - Zhongbiao Tan
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, Jiangsu 223003, China
| | - Jia Zhou
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, Jiangsu 223003, China
| | - Dianlong Wang
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, Jiangsu 223003, China
| | - Xinling Nie
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, Jiangsu 223003, China
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210097, China
| | - Chenhuan Lai
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210097, China
| | - Hao Shi
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, Jiangsu 223003, China
| | - Xun Li
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210097, China
| | - Daihui Zhang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210097, China
- Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing, Jiangsu 210037, China
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Han G, Lee DG. Urechistachykinin I induced ferroptosis by accumulating reactive oxygen species in Vibrio vulnificus. Appl Microbiol Biotechnol 2023; 107:7571-7580. [PMID: 37796305 DOI: 10.1007/s00253-023-12802-y] [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: 04/01/2023] [Revised: 09/08/2023] [Accepted: 09/18/2023] [Indexed: 10/06/2023]
Abstract
Antimicrobial peptides (AMPs), such as urechistachykinin I (LRQSQFVGSR-NH2), derived from urechis unicinctus, have demonstrated antimicrobial activities. It exhibits low cytotoxicity and selectivity between microbial and mammalian cells suggesting its potent antimicrobial ability. However, the underlying antimicrobial mechanisms remain unknown. Herein, we elucidated the antibacterial action against Vibrio vulnificus, focusing on the reactive oxygen species (ROS). ROS is crucial for antibiotic-mediated killing and oxidative stress. After treatment with urechistachykinin I, superoxide anions and hydroxyl radicals increase, and the overproduction of ROS leads to oxidative damage and destruction of the redox system. Oxidation of the defense system like glutathione or glutathione peroxidase 4 illustrates the dysfunction of cellular metabolism and induces lipid peroxidation attributed to depolarization and integrity brokerage. Cell death demonstrated these properties, and additional experiments, including iron accumulation, liperfluo, and DNA fragmentation, were promoted. The results demonstrated that urechistachykinin I-induced ferroptosis-like death in Vibrio vulnificus is dependent on ROS production. KEY POINTS: • Urechistachykinin I induce reactive oxygen species production • Urechistachykinin I cause oxidative damaged on the V. vulnificus • Urechistachykinin I ferroptosis-like death in V. vulnificus.
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Affiliation(s)
- Giyeol Han
- School of Life Sciences, BK 21 FOUR KNU Creative BioResearch Group, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Dong Gun Lee
- School of Life Sciences, BK 21 FOUR KNU Creative BioResearch Group, Kyungpook National University, Daegu, 41566, Republic of Korea.
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Yadav VK, Choudhary N, Gacem A, Verma RK, Abul Hasan M, Tarique Imam M, Almalki ZS, Yadav KK, Park HK, Ghosh T, Kumar P, Patel A, Kalasariya H, Jeon BH, Ali AlMubarak H. Deeper insight into ferroptosis: association with Alzheimer's, Parkinson's disease, and brain tumors and their possible treatment by nanomaterials induced ferroptosis. Redox Rep 2023; 28:2269331. [PMID: 38010378 PMCID: PMC11001282 DOI: 10.1080/13510002.2023.2269331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023] Open
Abstract
Ferroptosis is an emerging and novel type of iron-dependent programmed cell death which is mainly caused by the excessive deposition of free intracellular iron in the brain cells. This deposited free iron exerts a ferroptosis pathway, resulting in lipid peroxidation (LiPr). There are mainly three ferroptosis pathways viz. iron metabolism-mediated cysteine/glutamate, and LiPr-mediated. Iron is required by the brain as a redox metal for several physiological activities. Due to the iron homeostasis balance disruption, the brain gets adversely affected which further causes neurodegenerative diseases (NDDs) like Parkinson's and Alzheimer's disease, strokes, and brain tumors like glioblastoma (GBS), and glioma. Nanotechnology has played an important role in the prevention and treatment of these NDDs. A synergistic effect of nanomaterials and ferroptosis could prove to be an effective and efficient approach in the field of nanomedicine. In the current review, the authors have highlighted all the latest research in the field of ferroptosis, specifically emphasizing on the role of major molecular key players and various mechanisms involved in the ferroptosis pathway. Moreover, here the authors have also addressed the correlation of ferroptosis with the pathophysiology of NDDs and theragnostic effect of ferroptosis and nanomaterials for the prevention and treatment of NDDs.
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Affiliation(s)
- Virendra Kumar Yadav
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, India
| | - Nisha Choudhary
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, India
| | - Amel Gacem
- Department of Physics, Faculty of Sciences, University 20 Août 1955, Skikda, Algeria
| | - Rakesh Kumar Verma
- Department of Biosciences, School of Liberal Arts & Sciences, Mody University of Science and Technology, Sikar, India
| | - Mohd Abul Hasan
- Civil Engineering Department, College of Engineering, King Khalid University, Abha, Kingdom of Saudi Arabia (KSA)
| | - Mohammad Tarique Imam
- Department of Clinical Pharmacy, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al Kharj, Saudi Arabia
| | - Ziyad Saeed Almalki
- Department of Clinical Pharmacy, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al Kharj, Saudi Arabia
| | - Krishna Kumar Yadav
- Faculty of Science and Technology, Madhyanchal Professional University, Bhopal, India
- Environmental and Atmospheric Sciences Research Group, Scientific Research Center, Al-Ayen University, Nasiriyah, Iraq
| | - Hyun-Kyung Park
- Department of Pediatrics, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Tathagata Ghosh
- Department of Arts, School of Liberal Arts & Sciences, Mody University of Science and Technology, Sikar, India
| | - Pankaj Kumar
- Department of Environmental Science, Parul Institute of Applied Sciences, Parul University, Vadodara, India
| | - Ashish Patel
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, India
| | - Haresh Kalasariya
- Centre for Natural Products Discovery, School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Liverpool, UK
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, Republic of Korea
| | - Hassan Ali AlMubarak
- Division of Radiology, Department of Medicine, College of Medicine and Surgery, King Khalid University (KKU), Abha, Kingdom of Saudi Arabia
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Xu Z, Wang X, Sun W, Xu F, Kou H, Hu W, Zhang Y, Jiang Q, Tang J, Xu Y. RelB-activated GPX4 inhibits ferroptosis and confers tamoxifen resistance in breast cancer. Redox Biol 2023; 68:102952. [PMID: 37944384 PMCID: PMC10641764 DOI: 10.1016/j.redox.2023.102952] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 09/21/2023] [Accepted: 10/30/2023] [Indexed: 11/12/2023] Open
Abstract
Tamoxifen (TAM) resistance remains a major obstacle in the treatment of advanced breast cancer (BCa). In addition to the competitive inhibition of the estrogen receptor (ER) signaling pathway, damping of mitochondrial function by increasing reactive oxygen species (ROS) is critical for enhancing TAM pharmacodynamics. Here, we showed that RelB contributes to TAM resistance by inhibiting TAM-provoked ferroptosis. TAM-induced ROS level promoted ferroptosis in TAM-sensitive cells, but the effect was alleviated in TAM-resistant cells with high constitutive levels of RelB. Mechanistically, RelB inhibited ferroptosis by transcriptional upregulating glutathione peroxidase 4 (GPX4). Consequently, elevating RelB and GPX4 in sensitive cells increased TAM resistance, and conversely, depriving RelB and GPX4 in resistant cells decreased TAM resistance. Furthermore, suppression of RelB transcriptional activation resensitized TAM-resistant cells by enhancing ferroptosis in vitro and in vivo. The inactivation of GPX4 in TAM-resistant cells consistently resensitized TAM by increasing ferroptosis-mediated cell death. Together, this study uncovered that inhibition of ferroptosis contributes to TAM resistance of BCa via RelB-upregulated GPX4.
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Affiliation(s)
- Zhi Xu
- Affiliated Eye Hospital, Nanjing Medical University, 138 Hanzhong Road, Nanjing, 210029, China; Department of General Surgery, The First Affiliated Hospital with Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China; Phase 1 Clinical Trials Unit, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, 321 Zhongshan Road, Nanjing, 210008, China
| | - Xiumei Wang
- Affiliated Eye Hospital, Nanjing Medical University, 138 Hanzhong Road, Nanjing, 210029, China; Jiangsu Key Lab of Cancer Biomarkers, Prevention, and Treatment, Nanjing Medical University, 101 Longman Avenue, Nanjing, 211166, China
| | - Wenbo Sun
- Affiliated Eye Hospital, Nanjing Medical University, 138 Hanzhong Road, Nanjing, 210029, China; Jiangsu Key Lab of Cancer Biomarkers, Prevention, and Treatment, Nanjing Medical University, 101 Longman Avenue, Nanjing, 211166, China
| | - Fan Xu
- Affiliated Eye Hospital, Nanjing Medical University, 138 Hanzhong Road, Nanjing, 210029, China; Affiliated Cancer Hospital, Nanjing Medical University, 42 Baiziting Avenue, Nanjing, 210009, China
| | - Hengyuan Kou
- Affiliated Eye Hospital, Nanjing Medical University, 138 Hanzhong Road, Nanjing, 210029, China; Jiangsu Key Lab of Cancer Biomarkers, Prevention, and Treatment, Nanjing Medical University, 101 Longman Avenue, Nanjing, 211166, China
| | - Weizi Hu
- Jiangsu Key Lab of Cancer Biomarkers, Prevention, and Treatment, Nanjing Medical University, 101 Longman Avenue, Nanjing, 211166, China
| | - Yanyan Zhang
- Affiliated Cancer Hospital, Nanjing Medical University, 42 Baiziting Avenue, Nanjing, 210009, China
| | - Qin Jiang
- Affiliated Eye Hospital, Nanjing Medical University, 138 Hanzhong Road, Nanjing, 210029, China.
| | - Jinhai Tang
- Department of General Surgery, The First Affiliated Hospital with Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China.
| | - Yong Xu
- Affiliated Eye Hospital, Nanjing Medical University, 138 Hanzhong Road, Nanjing, 210029, China; Jiangsu Key Lab of Cancer Biomarkers, Prevention, and Treatment, Nanjing Medical University, 101 Longman Avenue, Nanjing, 211166, China; Affiliated Cancer Hospital, Nanjing Medical University, 42 Baiziting Avenue, Nanjing, 210009, China.
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9
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Estrada-Cárdenas P, Peregrino-Uriarte AB, Gómez-Jiménez S, Valenzuela-Soto EM, Leyva-Carrillo L, Yepiz-Plascencia G. Responses and modulation of the white shrimp Litopenaeus vannamei glutathione peroxidases 2 and 4 during hypoxia, reoxygenation and GPx4 knock-down. Biochimie 2023; 214:157-164. [PMID: 37460039 DOI: 10.1016/j.biochi.2023.07.006] [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: 02/07/2023] [Revised: 06/06/2023] [Accepted: 07/08/2023] [Indexed: 07/25/2023]
Abstract
Glutathione peroxidases (GPxs) are important antioxidant enzymes that act at distinct levels of the antioxidant defense. In vertebrates, there are several glutathione peroxidase (GPx) isoforms with different cellular and tissue distribution, but little is known about their interrelationships. The shrimp Litopenaeus vannamei is the main crustacean cultivated worldwide. It is affected by environmental stressors, including hypoxia and reoxygenation that cause reactive oxygen species accumulation. Thus, the antioxidant response modulation is key for shrimp resilience. Recently, several GPx isoforms genes were identified in the L. vannamei genome sequence, but their functions are just beginning to be studied. As in vertebrates, shrimp GPx isoforms can present differences in their antioxidant responses. Also, there could be interrelationships among the isoforms that may influence their responses. We evaluated shrimp GPx2 and GPx4 expressions during hypoxia, reoxygenation, and GPx4 knock-down using RNAi for silencing, as well as the enzymatic activity of total GPx and GPx4. Also, glutathione content in hepatopancreas was evaluated. GPx2 and GPx4 presented similar expression patterns during hypoxia and reoxygenation. Their expressions decreased during hypoxia and were reestablished in reoxygenation at 6 h in non-silenced shrimp. GPx2 expression was down-regulated by GPx4 knock-down, suggesting that GPx4 affects GPx2 expression. Total GPx activity changed in hypoxia and reoxygenation at 6 h but not at 12 h, while GPx4 activity was not affected by any stressor. The GSH/GSSG ratio in hepatopancreas indicated that at early hours, the redox status remains well-modulated but at 12 h it is impaired by hypoxia and reoxygenation.
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Affiliation(s)
- Paulina Estrada-Cárdenas
- Centro de Investigación en Alimentación y Desarrollo (CIAD), A.C., Carretera Gustavo Enrique Astiazarán Rosas, No. 46, Col. La Victoria, Hermosillo, Sonora, 83304, Mexico
| | - Alma B Peregrino-Uriarte
- Centro de Investigación en Alimentación y Desarrollo (CIAD), A.C., Carretera Gustavo Enrique Astiazarán Rosas, No. 46, Col. La Victoria, Hermosillo, Sonora, 83304, Mexico
| | - Silvia Gómez-Jiménez
- Centro de Investigación en Alimentación y Desarrollo (CIAD), A.C., Carretera Gustavo Enrique Astiazarán Rosas, No. 46, Col. La Victoria, Hermosillo, Sonora, 83304, Mexico
| | - Elisa M Valenzuela-Soto
- Centro de Investigación en Alimentación y Desarrollo (CIAD), A.C., Carretera Gustavo Enrique Astiazarán Rosas, No. 46, Col. La Victoria, Hermosillo, Sonora, 83304, Mexico
| | - Lilia Leyva-Carrillo
- Centro de Investigación en Alimentación y Desarrollo (CIAD), A.C., Carretera Gustavo Enrique Astiazarán Rosas, No. 46, Col. La Victoria, Hermosillo, Sonora, 83304, Mexico
| | - Gloria Yepiz-Plascencia
- Centro de Investigación en Alimentación y Desarrollo (CIAD), A.C., Carretera Gustavo Enrique Astiazarán Rosas, No. 46, Col. La Victoria, Hermosillo, Sonora, 83304, Mexico.
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10
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Yan Q, Wei J, Song J, Li M, Guan X, Song J. Study on the Properties and Synergistic Antioxidant Effects of Novel Bifunctional Fusion Proteins Expressed Using the UTuT6 System. Antioxidants (Basel) 2023; 12:1766. [PMID: 37760069 PMCID: PMC10526088 DOI: 10.3390/antiox12091766] [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: 08/08/2023] [Revised: 09/08/2023] [Accepted: 09/13/2023] [Indexed: 09/29/2023] Open
Abstract
Important antioxidant enzymes, glutathione peroxidase (GPx) and superoxide dismutase (SOD), are involved in maintaining redox balance. They can protect each other and result in more efficiently removing excessive reactive oxygen species (ROS), protecting cells against injury, and maintaining the normal metabolism of ROS. In this study, human cytosolic GPx (hGPx1) and human phospholipid hydroperoxide GPx (hGPx4) genes were integrated into the same open reading frame with human extracellular SOD active site (SOD3-72P) genes, respectively, and several novel fusion proteins were obtained by using the UTuT6 expression system for the first time. Among them, Se-hGPx1UAG-L4-SOD3-72P is the bifunctional fusion protein with the highest GPx activity and the best anti-hydrogen peroxide inactivation ability thus far. The Se-hGPx4UAG-L3-SOD3-72P fusion protein exhibits the strongest alkali and high temperature resistance and a greater protective effect against lipoprotein peroxidation damage. Se-hGPx1UAG-L4-SOD3-72P and Se-hGPx4UAG-L3-SOD3-72P fusion proteins both have good synergistic and antioxidant abilities in H2O2-induced RBCs and liver damage models. We believe that this research will help with the development of novel bifunctional fusion proteins and the investigation of the synergistic and catalytic mechanisms of GPx and SOD, which are important in creating novel protein therapeutics.
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Affiliation(s)
- Qi Yan
- College of Pharmaceutical Science, Jilin University, Changchun 130021, China; (Q.Y.)
| | - Jingyan Wei
- College of Pharmaceutical Science, Jilin University, Changchun 130021, China; (Q.Y.)
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, Jilin University, Changchun 130000, China
- Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China
| | - Junxia Song
- College of Pharmaceutical Science, Jilin University, Changchun 130021, China; (Q.Y.)
| | - Mengna Li
- College of Pharmaceutical Science, Jilin University, Changchun 130021, China; (Q.Y.)
| | - Xin Guan
- College of Pharmaceutical Science, Jilin University, Changchun 130021, China; (Q.Y.)
| | - Jian Song
- School of Microelectronics, Shanghai University, Shanghai 201800, China
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11
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Moghaddam SV, Abedi F, Lotfi H, Salehi R, Barzegar A, Eslaminejad MB, Khalili M, Alizadeh E. An efficient method for cell sheet bioengineering from rBMSCs on thermo-responsive PCL-PEG-PCL copolymer. J Biol Eng 2023; 17:27. [PMID: 37024910 PMCID: PMC10080813 DOI: 10.1186/s13036-023-00346-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 03/25/2023] [Indexed: 04/08/2023] Open
Abstract
Utilizing both medium enrichment and a thermos-responsive substrate to maintain the cell-to-cell junctions and extracellular matrix (ECM) intact, cell sheet technology has emerged as a ground-breaking approach. Investigating the possibility of using sodium selenite (as medium supplementation) and PCL-PEG-PCL (as vessel coating substrate) in the formation of the sheets from rat bone marrow-derived mesenchymal stem cells (rBMSCs) was the main goal of the present study. To this end, first, Polycaprolactone-co-Poly (ethylene glycol)-co-Polycaprolactone triblock copolymer (PCEC) was prepared by ring-opening copolymerization method and characterized by FTIR, 1 H NMR, and GPC. The sol-gel-sol phase transition temperature of the PCEC aqueous solutions with various concentrations was either measured. Next, rBMSCs were cultured on the PCEC, and let be expanded in five different media containing vitamin C (50 µg/ml), sodium selenite (0.1 µM), vitamin C and sodium selenite (50 µg/ml + 0.1 µM), Trolox, and routine medium. The proliferation of the cells exposed to each material was evaluated. Produced cell sheets were harvested from the polymer surface by temperature reduction and phenotypically analyzed via an inverted microscope, hematoxylin and eosin (H&E) staining, and field emission scanning electron microscopy (FESEM). Through the molecular level, the expression of the stemness-related genes (Sox2, Oct-4, Nanog), selenium-dependent enzymes (TRX, GPX-1), and aging regulator gene (Sirt1) were measured by q RT-PCR. Senescence in cell sheets was checked by beta-galactosidase assay. The results declared the improved ability of the rBMSCs for osteogenesis and adipogenesis in the presence of antioxidants vitamin C, sodium selenite, and Trolox in growth media. The data indicated that in the presence of vitamin C and sodium selenite, the quality of the cell sheet was risen by reducing the number of senescent cells and high transcription of the stemness genes. Monolayers produced by sodium selenite was in higher-quality than the ones produced by vitamin C.
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Affiliation(s)
- Sevil Vaghefi Moghaddam
- Clinical Research Development, Unit of Tabriz Valiasr Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fatemeh Abedi
- Clinical Research Development, Unit of Tabriz Valiasr Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hajie Lotfi
- Cellular and Molecular Research Center, Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Roya Salehi
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Abolfazl Barzegar
- Department of Animal Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran.
| | - Mohamadreza Baghaban Eslaminejad
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Mostafa Khalili
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Effat Alizadeh
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
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12
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Caro AA, Barrett D, Garcia C, Northington W, Pinkney J, Shuja R, Stovall H. CYP2E1 overexpression protects COS-7 cancer cells against ferroptosis. RESEARCH SQUARE 2023:rs.3.rs-2702878. [PMID: 36993697 PMCID: PMC10055644 DOI: 10.21203/rs.3.rs-2702878/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
Ferroptosis is a recently described form of regulated cell death initiated by the iron-mediated one-electron reduction of lipid hydroperoxides (LOOH). Cytochrome P450 2E1 (CYP2E1) induction, a consequence of genetic polymorphisms or/and gene induction by xenobiotics, may promote ferroptosis by contributing to the cellular pool of LOOH. However, CYP2E1 induction also increases the transcription of anti-ferroptotic genes that regulate the activity of glutathione peroxidase 4 (GPX4), the main ferroptosis inhibitor. Based on the above, we hypothesize that the impact of CYP2E1 induction on ferroptosis depends on the balance between pro- and anti-ferroptotic pathways triggered by CYP2E1. To test our hypothesis, ferroptosis was induced with class 2 inducers (RSL-3 or ML-162) in mammalian COS-7 cancer cells that don't express CYP2E1 (Mock cells), and in cells engineered to express human CYP2E1 (WT cells), and the impact on viability, lipid peroxidation and GPX4 was assessed. CYP2E1 overexpression protected COS-7 cancer cells against ferroptosis, evidenced by an increase in the IC50 and a decrease in lipid ROS in WT versus Mock cells after exposure to class 2 inducers. CYP2E1 overexpression produced an 80% increase in the levels of the GPX4 substrate glutathione (GSH). Increasing GSH in Mock cells protected cells against ferroptosis by ML-162. Depleting GSH, or inhibiting Nrf2 in WT cells reverted the protective effect mediated by CYP2E1, causing a decrease in the IC50 and an increase in lipid ROS after exposure to ML-162. These results show that CYP2E1 overexpression protects COS-7 cancer cells against ferroptosis, an effect probably mediated by Nrf2-dependent GSH induction.
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13
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A Beginner's Guide to Cell Culture: Practical Advice for Preventing Needless Problems. Cells 2023; 12:cells12050682. [PMID: 36899818 PMCID: PMC10000895 DOI: 10.3390/cells12050682] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/18/2023] [Accepted: 02/19/2023] [Indexed: 02/25/2023] Open
Abstract
The cultivation of cells in a favorable artificial environment has become a versatile tool in cellular and molecular biology. Cultured primary cells and continuous cell lines are indispensable in investigations of basic, biomedical, and translation research. However, despite their important role, cell lines are frequently misidentified or contaminated by other cells, bacteria, fungi, yeast, viruses, or chemicals. In addition, handling and manipulating of cells is associated with specific biological and chemical hazards requiring special safeguards such as biosafety cabinets, enclosed containers, and other specialized protective equipment to minimize the risk of exposure to hazardous materials and to guarantee aseptic work conditions. This review provides a brief introduction about the most common problems encountered in cell culture laboratories and some guidelines on preventing or tackling respective problems.
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14
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Shen D, Yang F, Li Q. Detection of Ferroptosis in Models of Brain Diseases. Methods Mol Biol 2023; 2712:233-251. [PMID: 37578711 DOI: 10.1007/978-1-0716-3433-2_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Ferroptosis is a regulated form of non-apoptotic cell death driven by iron-dependent lipid peroxidation. In the past decade, ferroptosis has been reported to be involved in the pathological role in the central nervous system degenerative diseases (e.g., Alzheimer's disease, Huntington's disease, and Parkinson's disease), stroke, traumatic brain injury, and brain tumor. However, how to reliably detect and classify ferroptosis from other cell death in pathological conditions remains a great challenge, especially in primary brain cells and brain tissues. Here, we summarize the methods and protocols (such as real-time PCR, western blotting, immunofluorescence staining, lipid peroxidation assay kits and probe, immunofluorescence staining, GPX activity and glutathione depletion assay kits, iron detection, and TEM) used in the present study to detect and classify ferroptosis in the brain.
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Affiliation(s)
- Danmin Shen
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing, China
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Fei Yang
- Department of Neurobiology, Capital Medical University, Beijing, China
| | - Qian Li
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing, China.
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15
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The role of mitochondria in pharmacological ascorbate-induced toxicity. Sci Rep 2022; 12:22521. [PMID: 36581766 PMCID: PMC9800562 DOI: 10.1038/s41598-022-27185-9] [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: 09/14/2022] [Accepted: 12/27/2022] [Indexed: 12/31/2022] Open
Abstract
At pharmacological levels, ascorbate (P-AscH-) acts as a pro-oxidant by generating H2O2, depleting ATP in sensitive cells leading to cell death. The aim of this study was to determine the role of ATP production by oxidative phosphorylation or glycolysis in mechanisms of resistance to P-AscH-induced cell death. Pancreatic cancer cells were used to generate ρ0 cells by mitochondrial overexpression of the Y147A mutant uracil-N-glycosylase or Herpes Simplex Virus protein. The ρ0 phenotype was confirmed by probing for mitochondrial DNA, mitochondrial DNA-encoded cytochrome c oxidase subunit 2, and monitoring the rate of oxygen consumption. In ρ0 cells, glycolysis accounted for 100% of ATP production as there was no mitochondrial oxygen consumption. Even though the activities of H2O2-removing antioxidant enzymes were similar in both the parental and ρ0 clones, P-AscH- -induced clonogenic cell death in ρ0 cells showed more resistance than the parental cell line. In addition, P-AscH- induced more DNA damage and more consumption of NAD+ and greater decreases in the production of ATP in the parental cell line compared to the ρ0 cells. Thus, cancer cells that largely use oxidative phosphorylation to generate ATP may be more sensitive to P-AscH- compared with cells that are glycolysis-dependent.
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16
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Liu H, Forouhar F, Lin AJ, Wang Q, Polychronidou V, Soni RK, Xia X, Stockwell BR. Small-molecule allosteric inhibitors of GPX4. Cell Chem Biol 2022; 29:1680-1693.e9. [PMID: 36423641 PMCID: PMC9772252 DOI: 10.1016/j.chembiol.2022.11.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 02/27/2022] [Accepted: 11/02/2022] [Indexed: 11/24/2022]
Abstract
Encouraged by the dependence of drug-resistant, metastatic cancers on GPX4, we examined biophysical mechanisms of GPX4 inhibition, which revealed an unexpected allosteric site. We found that this site was involved in native regeneration of GPX4 under low glutathione conditions. Covalent binding of inhibitors to this allosteric site caused a conformational change, inhibition of activity, and subsequent cellular GPX4 protein degradation. To verify this site in an unbiased manner, we screened a library of compounds and identified and validated that an additional compound can covalently bind in this allosteric site, inhibiting and degrading GPX4. We determined co-crystal structures of six different inhibitors bound in this site. We have thus identified an allosteric mechanism for small molecules targeting aggressive cancers dependent on GPX4.
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Affiliation(s)
- Hengrui Liu
- Department of Chemistry, Columbia University, New York, NY 10027, USA
| | - Farhad Forouhar
- Department of Biological Sciences, Columbia University, New York, NY 10027, USA; Herbert Irving Comprehensive Cancer Center, Columbia University, New York, NY 10032, USA
| | - Annie J Lin
- Department of Biological Sciences, Columbia University, New York, NY 10027, USA
| | - Qian Wang
- Department of Biological Sciences, Columbia University, New York, NY 10027, USA
| | | | - Rajesh Kumar Soni
- Herbert Irving Comprehensive Cancer Center, Columbia University, New York, NY 10032, USA
| | - Xin Xia
- Department of Biological Sciences, Columbia University, New York, NY 10027, USA
| | - Brent R Stockwell
- Department of Chemistry, Columbia University, New York, NY 10027, USA; Department of Biological Sciences, Columbia University, New York, NY 10027, USA; Herbert Irving Comprehensive Cancer Center, Columbia University, New York, NY 10032, USA; Irving Institute for Cancer Dynamics, Columbia University, New York, NY 10027, USA.
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17
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Ye S, Lin R, Guo X, Xing J, Liu K, Yang W, Guo N. Bioinformatics analysis on the expression of GPX family in gastric cancer and its correlation with the prognosis of gastric cancer. Heliyon 2022; 8:e12214. [PMID: 36636221 PMCID: PMC9830173 DOI: 10.1016/j.heliyon.2022.e12214] [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: 03/29/2022] [Revised: 07/20/2022] [Accepted: 11/30/2022] [Indexed: 12/13/2022] Open
Abstract
Background Gastric cancer (GC) is one of the most common cancers of the digestive tract, with the fifth-highest incidence and third highest mortality rate in the world. Methods In this study, the Kaplan-Meier Plotter database was used to analyze the correlation between the expression of the glutathione peroxidase (GPX) family and the clinical prognosis of gastric cancer (GC). The prognostic value of increased GPX family mRNA expression in GC patients in different clinical stages, with different differentiation degrees, in different genders and human epidermal growth factor receptor-2 (HER2) status, and treated with different therapeutic regimens was also studied. Results The results showed that with the increase of GPX1 and GPX2 mRNA low expression levels, the overall survival (OS) of gastric cancer patients was longer. However, when the high expression levels of GPX3, GPX5 and GPX6 mRNA increased, gastric cancer patients presented good OS, while the increase of GPX4 mRNA expression level had no significant correlation with OS in gastric cancer patients. Conclusion The results of this study are expected to provide a reliable basis for the clinical treatment of GC and lay a foundation for the development of a novel GC treatment approach.
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Affiliation(s)
- Siping Ye
- School of Pharmacy, Beihua University, Jilin 132012, China
| | - Rui Lin
- School of Pharmacy, Beihua University, Jilin 132012, China
| | - Xiao Guo
- School of Pharmacy, Beihua University, Jilin 132012, China,Gongqing Institute of Science and Technology, Jiujiang 332020, China,Corresponding author.
| | - Jiaying Xing
- School of Pharmacy, Beihua University, Jilin 132012, China
| | - Keyi Liu
- School of Pharmacy, Beihua University, Jilin 132012, China
| | - Wenchuang Yang
- School of Pharmacy, Beihua University, Jilin 132012, China
| | - Naiyuan Guo
- School of Pharmacy, Beihua University, Jilin 132012, China
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18
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Kline CD, Anderson M, Bassett JW, Kent G, Berryman R, Honeggar M, Ito S, Wakamatsu K, Indra AK, Moos PJ, Leachman SA, Cassidy PB. MITF Is Regulated by Redox Signals Controlled by the Selenoprotein Thioredoxin Reductase 1. Cancers (Basel) 2022; 14:5011. [PMID: 36291795 PMCID: PMC9600194 DOI: 10.3390/cancers14205011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 10/10/2022] [Accepted: 10/12/2022] [Indexed: 11/17/2022] Open
Abstract
TR1 and other selenoproteins have paradoxical effects in melanocytes and melanomas. Increasing selenoprotein activity with supplemental selenium in a mouse model of UV-induced melanoma prevents oxidative damage to melanocytes and delays melanoma tumor formation. However, TR1 itself is positively associated with progression in human melanomas and facilitates metastasis in melanoma xenografts. Here, we report that melanocytes expressing a microRNA directed against TR1 (TR1low) grow more slowly than control cell lines and contain significantly less melanin. This phenotype is associated with lower tyrosinase (TYR) activity and reduced transcription of tyrosinase-like protein-1 (TYRP1). Melanoma cells in which the TR1 gene (TXNRD1) was disrupted using Crispr/Cas9 showed more dramatic effects including the complete loss of the melanocyte-specific isoform of MITF; other MITF isoforms were unaffected. We provide evidence that TR1 depletion results in oxidation of MITF itself. This newly discovered mechanism for redox modification of MITF has profound implications for controlling both pigmentation and tumorigenesis in cells of the melanocyte lineage.
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Affiliation(s)
- Chelsey D. Kline
- Department of Dermatology, Oregon Health & Science University, Portland, OR 97239, USA
| | - Madeleine Anderson
- Department of Dermatology, Oregon Health & Science University, Portland, OR 97239, USA
| | - John W. Bassett
- Department of Dermatology, Oregon Health & Science University, Portland, OR 97239, USA
| | - Gail Kent
- Department of Dermatology, Oregon Health & Science University, Portland, OR 97239, USA
| | - Rachel Berryman
- Department of Dermatology, Oregon Health & Science University, Portland, OR 97239, USA
| | - Matthew Honeggar
- Department of Dermatology, Oregon Health & Science University, Portland, OR 97239, USA
| | - Shosuke Ito
- Institute for Melanin Chemistry, Fujita Health University, Toyoake 470-1192, Japan
| | - Kazumasa Wakamatsu
- Institute for Melanin Chemistry, Fujita Health University, Toyoake 470-1192, Japan
| | - Arup K. Indra
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, OR 97331, USA
- Department of Dermatology, Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Philip J. Moos
- Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, UT 84112, USA
| | - Sancy A. Leachman
- Department of Dermatology, Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Pamela B. Cassidy
- Department of Dermatology, Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239, USA
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19
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In Vitro Toxicity Evaluation of Cyanotoxins Cylindrospermopsin and Microcystin-LR on Human Kidney HEK293 Cells. Toxins (Basel) 2022; 14:toxins14070429. [PMID: 35878167 PMCID: PMC9316492 DOI: 10.3390/toxins14070429] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 06/17/2022] [Accepted: 06/21/2022] [Indexed: 12/10/2022] Open
Abstract
Cyanotoxins are secondary metabolites produced by different types of cyanobacteria. Among them, Cylindrospermopsin (CYN) and Microcystins (MCs) stand out due to their wide geographical distribution and toxicity in various organs, including the kidney, which is involved in their distribution and elimination. However, the renal toxicity caused by CYN and MCs has hardly been studied. The aim of this work was to assess the cytotoxicity effects caused by CYN and MC-LR in the renal cell line HEK293, and for the first time, the influence of CYN on the gene expression of selected genes in these cells by quantitative real-time PCR (qRT-PCR). CYN caused an upregulation in the gene expression after exposure to the highest concentration (5 µg/mL) and the longest time of exposure (24 h). Moreover, shotgun proteomic analysis was used to assess the molecular responses of HEK293 cells after exposure to the individuals and combinations of CYN + MC-LR. The simultaneous exposure to both cyanotoxins caused a greater number of alterations in protein expression compared to single toxins, causing changes in the cellular, lipid and protein metabolism and in protein synthesis and transport. Further studies are needed to complete the toxicity molecular mechanisms of both CYN and MC-LR at the renal level.
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20
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High Iron Exposure from the Fetal Stage to Adulthood in Mice Alters Lipid Metabolism. Nutrients 2022; 14:nu14122451. [PMID: 35745181 PMCID: PMC9227341 DOI: 10.3390/nu14122451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 06/02/2022] [Accepted: 06/07/2022] [Indexed: 12/11/2022] Open
Abstract
Iron supplementation is recommended during pregnancy and fetal growth. However, excess iron exposure may increase the risk of abnormal fetal development. We investigated the potential side effects of high iron levels in fetuses and through their adult life. C57BL/6J pregnant mice from 2 weeks of gestation and their offspring until 30 weeks were fed a control (CTRL, FeSO4 0 g/1 kg) or high iron (HFe, FeSO4 9.9 g/1 kg) diets. HFe group showed higher iron accumulation in the liver with increased hepcidin, reduced TfR1/2 mRNAs, and lowered ferritin heavy chain (FTH) proteins in both liver and adipose tissues despite iron loading. HFe decreased body weight, fat weight, adipocyte size, and triglyceride levels in the blood and fat, along with downregulation of lipogenesis genes, including PPARγ, C/EBPα, SREBP1c, FASN, and SCD1, and fatty acid uptake and oxidation genes, such as CD36 and PPARα. UCP2, adiponectin, and mRNA levels of antioxidant genes such as GPX4, HO-1, and NQO1 were increased in the HFe group, while total glutathione was reduced. We conclude that prolonged exposure to high iron from the fetal stage to adulthood may decrease fat accumulation by altering ferritin expression, adipocyte differentiation, and triglyceride metabolism, resulting in an alteration in normal growth.
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21
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Cai Z, Zhang Y, Zhang W, Ye J, Ling Q, Xing Z, Zhang S, Hoffmann PR, Liu Y, Yang W, Huang Z. Arsenic retention in erythrocytes and excessive erythrophagocytosis is related to low selenium status by impaired redox homeostasis. Redox Biol 2022; 52:102321. [PMID: 35500533 PMCID: PMC9065714 DOI: 10.1016/j.redox.2022.102321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 04/03/2022] [Accepted: 04/18/2022] [Indexed: 11/09/2022] Open
Abstract
Arsenic (As) contamination in drinking water is a global public health problem. Epidemiological studies have shown that selenium (Se) deficiency is associated with an increasing risk of arsenism. However, the association between Se status and As retention in erythrocytes and mechanisms underlying this association have not been fully investigated. In the present study, a total of 165 eligible subjects were recruited and As was found to accumulate in blood mainly by retention in erythrocytes. Retention of As in erythrocytes was negatively correlated with Se status, antioxidant parameters related to Se and As methylation capacity, but positively correlated with the protein-binding capacity of As. Additionally, erythrocytes isolated from subjects with low Se status exhibited cellular damage along with lower protein levels of CD47, which could be aggravated by hydrogen peroxide treatment. Consistent with the human study, the erythrocytes from mice with sub-chronic As exposure exhibited similar cellular damage and shown to be phagocytosed by splenic macrophages, and these effects were mitigated by dietary Se supplementation. Furthermore, hydrogen peroxide treatment induced excessive phagocytosis of erythrocytes with As exposure by splenic macrophages, while co-treating erythrocytes with the reducing agent, N-Acetyl-l-cysteine, mitigated this excessive erythrophagocytosis. Hyperactivation of the NFκB pathway was also detected in splenic macrophages after excessive erythrophagocytosis. In conclusion, this study found that low Se status involving impaired redox homeostasis increased As retention in erythrocytes, which were subsequently phagocytosed by splenic macrophages and led to an increased inflammatory status of splenic macrophages. These findings provide insight into physiological features of arsenism related to Se status and redox homeostasis.
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Affiliation(s)
- Zhihui Cai
- Department of Biotechnology, Jinan University, Guangzhou, Guangdong Province, China
| | - Yutian Zhang
- Department of Biotechnology, Jinan University, Guangzhou, Guangdong Province, China
| | - Weijie Zhang
- Department of Biotechnology, Jinan University, Guangzhou, Guangdong Province, China
| | - Jinmin Ye
- Department of Biotechnology, Jinan University, Guangzhou, Guangdong Province, China
| | - Qinjie Ling
- Department of Biotechnology, Jinan University, Guangzhou, Guangdong Province, China
| | - Zhi Xing
- Department of Chemistry, Tsinghua University, Beijing, China
| | - Sichun Zhang
- Department of Chemistry, Tsinghua University, Beijing, China
| | - Peter R Hoffmann
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, University of Hawaii, Honolulu, HI, USA
| | - Youbin Liu
- Department of Cardiology, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, Guangdong Province, China.
| | - Weidong Yang
- Department of Biotechnology, Jinan University, Guangzhou, Guangdong Province, China.
| | - Zhi Huang
- Department of Biotechnology, Jinan University, Guangzhou, Guangdong Province, China.
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22
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Ali MY, Oliva CR, Flor S, Goswami PC, Griguer CE. Cytochrome c oxidase mediates labile iron level and radioresistance in glioblastoma. Free Radic Biol Med 2022; 185:25-35. [PMID: 35476930 DOI: 10.1016/j.freeradbiomed.2022.04.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 04/11/2022] [Accepted: 04/20/2022] [Indexed: 02/06/2023]
Abstract
Radiotherapy is an important treatment modality for glioblastoma (GBM), yet the initial effectiveness of radiotherapy is eventually lost due to the development of adaptive radioresistance during fractionated radiation therapy. Defining the molecular mechanism(s) responsible for the adaptive radioresistance in GBM is necessary for the development of effective treatment options. The cellular labile iron pool (LIP) is very important for determining the cellular response to radiation, as it contributes to radiation-induced production of reactive oxygen species (ROS) such as lipid radicals through Fenton reactions. Recently, cytochrome c oxidase (CcO), a mitochondrial heme-containing enzyme also involved in regulating ROS production, was found to be involved in GBM chemoresistance. However, the role of LIP and CcO in GBM radioresistance is not known. Herein, we tested the hypothesis that CcO-mediated alterations in the level of labile iron contribute to adaptive radioresistance. Using an in vitro model of GBM adaptive radioresistance, we found an increase in CcO activity in radioresistant cells that associated with a decrease in the cellular LIP, decrease in lipid peroxidation, and a switch in the CcO subunit 4 (COX4) isoform expressed, from COX4-2 to COX4-1. Furthermore, knockdown of COX4-1 in radioresistant GBM cells decreased CcO activity and restored radiosensitivity, whereas overexpression of COX4-1 in radiosensitive cells increased CcO activity and rendered the cells radioresistant. Overexpression of COX4-1 in radiosensitive cells also significantly reduced the cellular LIP and lipid peroxidation. Pharmacological manipulation of the cellular labile iron level using iron chelators altered CcO activity and the radiation response. Overall, these results demonstrate a mechanistic link between CcO activity and LIP in GBM radioresistance and identify the CcO subunit isoform switch from COX4-2 to COX4-1 as a novel biochemical node for adaptive radioresistance of GBM. Manipulation of CcO and the LIP may restore the sensitivity to radiation in radioresistant GBM cells and thereby provide a strategy to improve therapeutic outcome in patients with GBM.
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Affiliation(s)
- Md Yousuf Ali
- Free Radical & Radiation Biology Program, Department of Radiation Oncology, The University of Iowa, Iowa City, IA, 52242, USA; Interdisciplinary Graduate Program in Human Toxicology, The University of Iowa, Iowa City, IA, 52242, USA
| | - Claudia R Oliva
- Free Radical & Radiation Biology Program, Department of Radiation Oncology, The University of Iowa, Iowa City, IA, 52242, USA
| | - Susanne Flor
- Free Radical & Radiation Biology Program, Department of Radiation Oncology, The University of Iowa, Iowa City, IA, 52242, USA
| | - Prabhat C Goswami
- Free Radical & Radiation Biology Program, Department of Radiation Oncology, The University of Iowa, Iowa City, IA, 52242, USA
| | - Corinne E Griguer
- Free Radical & Radiation Biology Program, Department of Radiation Oncology, The University of Iowa, Iowa City, IA, 52242, USA.
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Berdaweel IA, Hart AA, Jatis AJ, Karlan N, Akhter SA, Gaine ME, Smith RM, Anderson EJ. A Genotype-Phenotype Analysis of Glutathione Peroxidase 4 in Human Atrial Myocardium and Its Association with Postoperative Atrial Fibrillation. Antioxidants (Basel) 2022; 11:antiox11040721. [PMID: 35453406 PMCID: PMC9026099 DOI: 10.3390/antiox11040721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 03/30/2022] [Accepted: 03/31/2022] [Indexed: 02/01/2023] Open
Abstract
Heterogeneity in the incidence of postoperative atrial fibrillation (POAF) following heart surgery implies that underlying genetic and/or physiological factors impart a higher risk of this complication to certain patients. Glutathione peroxidase-4 (GPx4) is a vital selenoenzyme responsible for neutralizing lipid peroxides, mediators of oxidative stress known to contribute to postoperative arrhythmogenesis. Here, we sought to determine whether GPX4 single nucleotide variants are associated with POAF, and whether any of these variants are linked with altered GPX4 enzyme content or activity in myocardial tissue. Sequencing analysis was performed across the GPX4 coding region within chromosome 19 from a cohort of patients (N = 189) undergoing elective coronary artery bypass graft (−/+ valve) surgery. GPx4 enzyme content and activity were also analyzed in matching samples of atrial myocardium from these patients. Incidence of POAF was 25% in this cohort. Five GPX4 variants were associated with POAF risk (permutated p ≤ 0.05), and eight variants associated with altered myocardial GPx4 content and activity (p < 0.05). One of these variants (rs713041) is a well-known modifier of cardiovascular disease risk. Collectively, these findings suggest GPX4 variants are potential risk modifiers and/or predictors of POAF. Moreover, they illustrate a genotype−phenotype link with this selenoenzyme, which will inform future mechanistic studies.
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Affiliation(s)
- Islam A. Berdaweel
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA; (I.A.B.); (A.J.J.); (N.K.); (M.E.G.); (R.M.S.)
| | - Alexander A. Hart
- Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA;
| | - Andrew J. Jatis
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA; (I.A.B.); (A.J.J.); (N.K.); (M.E.G.); (R.M.S.)
| | - Nathan Karlan
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA; (I.A.B.); (A.J.J.); (N.K.); (M.E.G.); (R.M.S.)
| | - Shahab A. Akhter
- Department of Cardiovascular Sciences, Brody School of Medicine, East Carolina Heart Institute, Greenville, NC 28592, USA;
| | - Marie E. Gaine
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA; (I.A.B.); (A.J.J.); (N.K.); (M.E.G.); (R.M.S.)
| | - Ryan M. Smith
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA; (I.A.B.); (A.J.J.); (N.K.); (M.E.G.); (R.M.S.)
| | - Ethan J. Anderson
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA; (I.A.B.); (A.J.J.); (N.K.); (M.E.G.); (R.M.S.)
- Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City, IA 52242, USA
- Correspondence: ; Tel.: +1-(319)335-8157
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24
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Wu C, Cui C, Zheng X, Wang J, Ma Z, Zhu P, Lin G, Zhang S, Guan W, Chen F. The Selenium Yeast vs Selenium Methionine on Cell Viability, Selenoprotein Profile and Redox Status via JNK/ P38 Pathway in Porcine Mammary Epithelial Cells. Front Vet Sci 2022; 9:850935. [PMID: 35433920 PMCID: PMC9011133 DOI: 10.3389/fvets.2022.850935] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 02/14/2022] [Indexed: 01/04/2023] Open
Abstract
Comprehensive studies have been conducted to compare the effect of organic and inorganic selenium previously, but there is still limited knowledge about the difference between organic selenium (Se) from varied sources despite the widely use of organic Se in both animal and human being nutrient additives. In the present study, we systemically compared the effect of two different types of organic Se including selenium yeast (SeY) and selenium methionine (Sel-Met) on cell viability, selenoprotein transcriptome, and antioxidant status in porcine mammary epithelial cells (PMECs) and the results indicated that appropriate addition of SeY and Sel-Met both significantly promoted cell viability and up-regulated the mRNA expression of most selenopreoteins including DIOs, GPXs, and TrxRs family et al. (P < 0.05). Besides, two different sources of Se supplementation both greatly improved redox status with higher levels of T-AOC, SOD, and CAT (P < 0.05), while less content of MDA (P < 0.05), and reduced protein expression of cleaved-caspase-3 (P < 0.05) to mitigate cell apoptosis. Furthermore, the key proteins related to p38/JNK pathway including p38, p-p38, JNK, and p-JNK were apparently reduced in the groups with both of SeY and Sel-Met (P < 0.05). Interestingly we found that the changes induced by SeY supplementation in cell viability, selenoprotein transcriptome, antioxidative capacity, and anti-apoptosis were comprehensively greater compared with same levels addition of Sel-Met in PEMCs (P < 0.05). In conclusion, both SeY and Sel-Met promoted cell viability and attenuated cell apoptosis by regulating the selenoprotein expression and antioxidative capacity via p38/JNK signaling pathway in PMEC, but SeY has more efficient benefits than that of Sel-Met.
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Affiliation(s)
- Caichi Wu
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Chang Cui
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Xiaoyu Zheng
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Jun Wang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Ziwei Ma
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Pengwei Zhu
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Gang Lin
- Key Laboratory of Agrifood Safety and Quality, Institute of Quality Standards and Testing Technology for Agricultural Products, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Shihai Zhang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Wutai Guan
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
- Wutai Guan
| | - Fang Chen
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
- *Correspondence: Fang Chen
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25
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Adeniran SO, Zheng P, Feng R, Adegoke EO, Huang F, Ma M, Wang Z, Ifarajimi OO, Li X, Zhang G. The Antioxidant Role of Selenium via GPx1 and GPx4 in LPS-Induced Oxidative Stress in Bovine Endometrial Cells. Biol Trace Elem Res 2022; 200:1140-1155. [PMID: 33895964 DOI: 10.1007/s12011-021-02731-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 04/18/2021] [Indexed: 01/15/2023]
Abstract
This study investigated the antioxidant role of selenium (Se) in the form of selenomethionine (SLM) in LPS-induced oxidative stress via the glutathione peroxidase (GPx) enzymes and the Nrf2/HO-1 transcription factor. The impact of serum supplementation in culture media on GPxs was also studied. The bovine uterus is constantly exposed to exogenous pathogens postpartum, and the endometrium is the first contact against bacteria invasion. Endometritis is an inflammation of the endometrium and is brought about by bacterial lipopolysaccharide capable of inducing oxidative stress. The BEND cells were supplemented at the point of seeding with the following SLM concentrations 0, 100, 500, and 1000 nM for 48 h. BEND cells, cultured with or without SLM (100 nM), were initially incubated for 48 h, and then, we serum starved the SLM group for 24, 48, and 72 h. Similarly, an assay involving serum volume (0, 2, 5, and 10%) supplementation in culture media (v/v) with or without SLM (100 nM) was performed for 48 h. The BEND cells were also seeded into four experimental groups and cultured for an initial 48 h as follows: control, LPS (20 μg/mL), SLM (100 nM), and SLM + LPS groups followed by 6-h LPS treatment. The role of SLM in modulating the expressions of GPx1 and GPx4 and the Nrf2 transcription factor-related genes was assessed using qRT-PCR and Western blot techniques. The results showed serum starvation in the presence of SLM supplementation decreased the expression of GPx1 enzyme but increased GPx4 compared to the control. The addition of SLM to cell culture media in an FBS limiting condition improved the expressions of both GPx1 and GPx4. SLM supplementation promoted GPx enzymes' expressions in a serum-free media (0%) and at 2% FBS in media. However, it did not improve their expressions at 10% FBS in media than the untreated groups. Together, our data show the protective role of Se by regulating the expressions of GPx1 and GPx4 enzymes in BEND cells. It also shows that SLM promoted the expression of Nrf2 transcription factor-related genes at both the mRNA and protein levels in BEND cells during LPS stimulation.
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Affiliation(s)
- Samson O Adeniran
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Northeast Agricultural University, Harbin, People's Republic of China
| | - Peng Zheng
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Northeast Agricultural University, Harbin, People's Republic of China
| | - Rui Feng
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Northeast Agricultural University, Harbin, People's Republic of China
| | - Elikanah O Adegoke
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Northeast Agricultural University, Harbin, People's Republic of China
- Department of Animal Science and Technology and BET Research Institute, Chung-Ang University, Anseong, South Korea
| | - Fushuo Huang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Northeast Agricultural University, Harbin, People's Republic of China
| | - Mingjun Ma
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Northeast Agricultural University, Harbin, People's Republic of China
| | - Ziming Wang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Northeast Agricultural University, Harbin, People's Republic of China
| | - Olamigoke O Ifarajimi
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Northeast Agricultural University, Harbin, People's Republic of China
| | - Xiaoyu Li
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Northeast Agricultural University, Harbin, People's Republic of China
| | - Guixue Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Northeast Agricultural University, Harbin, People's Republic of China.
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26
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Chang MT, Tsai LC, Nakagawa-Goto K, Lee KH, Shyur LF. Phyto-sesquiterpene lactones DET and DETD-35 induce ferroptosis in vemurafenib sensitive and resistant melanoma via GPX4 inhibition and metabolic reprogramming. Pharmacol Res 2022; 178:106148. [DOI: 10.1016/j.phrs.2022.106148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 02/24/2022] [Accepted: 02/25/2022] [Indexed: 12/17/2022]
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27
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Wu C, Du M, Yu R, Cheng Y, Wu B, Fu J, Tan W, Zhou Q, Balawi E, Liao ZB. A novel mechanism linking ferroptosis and endoplasmic reticulum stress via the circPtpn14/miR-351-5p/5-LOX signaling in melatonin-mediated treatment of traumatic brain injury. Free Radic Biol Med 2022; 178:271-294. [PMID: 34883251 DOI: 10.1016/j.freeradbiomed.2021.12.007] [Citation(s) in RCA: 53] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 12/02/2021] [Accepted: 12/03/2021] [Indexed: 12/21/2022]
Abstract
Traumatic brain injury (TBI) can lead to disability or devastating consequences with few established treatments. Although ferroptosis has been shown to be involved in TBI, the underlying mechanism was rarely known. Melatonin has been indicated to exhibit neuroprotective activities. However, the anti-ferroptotic effects of melatonin on TBI have not yet to be elucidated. We aimed to investigate whether ferroptosis was induced in humans after TBI and whether ferroptosis inhibition by melatonin could protect against blood-brain barrier (BBB) damage after TBI in vivo and in vitro. Circular RNAs (circRNAs) are highly expressed in the brain. For the first time, differentially expressed circRNA after melatonin treatment for TBI were detected by RNA sequencing. We found that lipid peroxidation was induced in humans after TBI, while melatonin significantly improved brain function of mice after TBI and alleviated ferroptosis and endoplasmic reticulum (ER) stress in vivo and in vitro. A total of 1826 differentially expressed circRNAs were found (fold change >2, Q < 0.01), including 921 down-regulated and 905 up-regulated circRNAs in the injured brain tissues of TBI mice receiving melatonin treatment. Mechanistically, melatonin administration reduced the level of circPtpn14 (mmu_circ_0000130), which functioned by acting as a miR-351-5p sponge to positively regulate the expression of the ferroptosis-related 5-lipoxygenase (5-LOX). Moreover, circPtpn14 overexpression partly abolished the inhibitory effects of melatonin on ferroptosis. Collectively, our findings provide the first evidence that melatonin could exert anti-ferroptotic and anti-ER stress effects in brain injury by alleviating lipid peroxidation via the circPtpn14/miR-351-5p/5-LOX signaling.
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Affiliation(s)
- Chenrui Wu
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Mengran Du
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Renqiang Yu
- Department of Radiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Yuqi Cheng
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Biying Wu
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Jiayuanyuan Fu
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Weilin Tan
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Qiang Zhou
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Ehab Balawi
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Z B Liao
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
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28
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Li M, Yun H, Huang J, Wang J, Wu W, Guo R, Wang L. Hair Selenium Content in Middle-Aged and Elderly Chinese Population. Biol Trace Elem Res 2021; 199:3571-3578. [PMID: 33188457 DOI: 10.1007/s12011-020-02482-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 11/08/2020] [Indexed: 12/20/2022]
Abstract
Selenium (Se) is an essential nutrient element for human health, and middle-aged and elderly people (age ≥ 45 years old) are at higher risk of nutrient deficiency including Se due to their physiological characteristics. This study investigated the hair Se content of middle-aged and elderly people in China with the purpose of providing a reference for prescription of hair Se normal range in this population. In this study, the hair Se content of 2155 middle-aged and elderly people was detected with atomic fluorescence photometry. The participants were recruited from 15 provinces or municipalities spreading from south to north of China with a diverse Se content in soil. Additionally, the relationships between hair Se content with sex, age, and BMI were analyzed. The results found that the median and 95% quantile of hair Se content were 0.36 μg/g and 0.60 μg/g respectively, with a range of 0.08 to 20.04 μg/g in middle-aged and elderly Chinese. The hair Se content mostly concentrated at 0.23~0.48 μg/g in 81.11% of participants. The participants in Guangdong and Hunan provinces had the highest hair Se levels (medians were 0.51 and 0.50 μg/g, respectively), while Henan and Shaanxi provinces had the lowest levels (medians were 0.30 and 0.29 μg/g, respectively). In addition, the Se content of males was higher than that of females (p < 0.05), whereas there was no significant difference between different ages and BMI (p > 0.05). In conclusion, this study found that the hair Se content of middle-aged and elderly Chinese ranges from 0.08 to 20.04 μg/g, with median and 95% quantile of 0.36 μg/g and 0.60 μg/g, respectively. Our results provide a reference for the establishment of hair Se content in this population and suggest that the differences of region and sex should be considered when setting up the range.
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Affiliation(s)
- Mengli Li
- School of Nursing, Medical College, Soochow University, No.1 Shizi Street, Suzhou, 215006, China
| | - Hang Yun
- School of Nursing, Medical College, Soochow University, No.1 Shizi Street, Suzhou, 215006, China
| | - Jie Huang
- Research Center, Soochow Setek Biotechnology Co., Ltd., Suzhou, 215123, China
| | - Jian Wang
- Research Center, Soochow Setek Biotechnology Co., Ltd., Suzhou, 215123, China
| | - Wansheng Wu
- Research Center, Soochow Setek Biotechnology Co., Ltd., Suzhou, 215123, China
| | - Remmei Guo
- Research Center, Soochow Setek Biotechnology Co., Ltd., Suzhou, 215123, China
| | - Li Wang
- School of Nursing, Medical College, Soochow University, No.1 Shizi Street, Suzhou, 215006, China.
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29
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Hydroxy Selenomethionine Improves Meat Quality through Optimal Skeletal Metabolism and Functions of Selenoproteins of Pigs under Chronic Heat Stress. Antioxidants (Basel) 2021; 10:antiox10101558. [PMID: 34679693 PMCID: PMC8533020 DOI: 10.3390/antiox10101558] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 09/27/2021] [Accepted: 09/27/2021] [Indexed: 11/16/2022] Open
Abstract
Chronic heat stress (CHS) induces metabolic changes in skeletal muscle from growth to maintenance that jeopardizes growth performance, carcass traits, and meat quality of pigs. We investigated the protective effect of dietary organic selenium (hydroxy-4-methylselenobutanoic acid, OH-SeMet) on CHS-induced skeletal muscle damages of growing pigs, and the corresponding responses of selenoproteins. A total of 40 ((Landrace ×Yorkshire) × Duroc) pigs with an average live weight of 49.64 ± 2.48 kg were used in this 4-week trial. Pigs were randomly allotted to 5 groups: The control group was raised on a basal diet in a thermoneutral environment (22 ± 2 °C); and four CHS groups were raised on a basal diet and supplemented with Se 0.0, 0.2, 0.4, and 0.6 mg/kg as OH-SeMet, respectively, in hyperthermal condition (33 ± 2 °C). CHS resulted in significant decrease of growth performance, carcass traits, and meat quality, which were associated with reduced (p < 0.05) serum alkaline phosphatase (ALP) and total superoxide dismutase (T-SOD) and increased (p < 0.05) serum creatine (CK), sarcous heat shock protein 70 (HSP70), glucokinase (GCK), phosphoenolpyruvate carboxykinase (PEPCK), and malondialdehyde (MDA) contents. Meanwhile, four metabolism-related genes and seven selenoprotein encoding genes were abnormally expressed in skeletal muscle. Dietary OH-SeMet addition partially alleviated the negative impact of CHS on carcass traits and improved meat quality. These improvements were accompanied by the increase in Se deposition, the anti-oxidative capacity of serum and muscle, and protein abundance of GPX1, GPX3, GPX4, and SELENOP. Supplementation with 0.6 mg Se/kg (OH-SeMet) restored the sarcous PEPCK, and 0.4 and 0.6 mg Se/kg (OH-SeMet) restored all abnormally expressed metabolism-related and selenoprotein encoding genes. In summary, dietary supplementation with OH-SeMet beyond Se requirement mitigated CHS-induced depression of carcass traits and meat quality of pigs associated with optimal skeletal metabolism, enhanced antioxidant capacity, and regulation of selenoproteins in skeletal muscle of pigs.
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30
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Stolwijk JM, Stefely JA, Veling MT, van 't Erve TJ, Wagner BA, Raife TJ, Buettner GR. Red blood cells contain enzymatically active GPx4 whose abundance anticorrelates with hemolysis during blood bank storage. Redox Biol 2021; 46:102073. [PMID: 34298465 PMCID: PMC8322435 DOI: 10.1016/j.redox.2021.102073] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 07/07/2021] [Accepted: 07/14/2021] [Indexed: 01/28/2023] Open
Abstract
The antioxidant function of the phospholipid hydroperoxide glutathione peroxidase (GPx4) is vital for the homeostasis of many cell types, from neoplastic cells to normal erythroid precursors. However, some functional proteins in erythroid precursors are lost during the development of red blood cells (RBCs); whether GPx4 is maintained as an active enzyme in mature RBCs has remained unclear. Our meta-analyses of existing RBC proteomics and metabolomics studies revealed the abundance of GPx4 to be correlated with lipid-anchored proteins. In addition, GPx4 anti-correlated with lyso-phospholipids and complement system proteins, further supporting the presence of active GPx4 in mature RBCs. To test the potential biological relevance of GPx4 in mature RBCs, we correlated the rate of hemolysis of human RBCs during storage with the abundance of GPx4 and other heritable RBC proteins. Of the molecules that anti-correlated with the rate of hemolysis of RBCs, proteins that mediate the cellular response to hydroperoxides, including GPx4, have the greatest enrichment. Western blotting further confirmed the presence of GPx4 antigenic protein in RBCs. Using an assay optimized to measure the activity of GPx4 in RBCs, we found GPx4 to be an active enzyme in mature RBCs, suggesting that GPx4 protects RBCs from hemolysis during blood bank storage. Red blood cells (RBCs) have active GPx4, phospholipid hydroperoxide glutathione peroxidase. The abundance of GPx4 correlates with lipid-anchored proteins. The rate of hemolysis of RBCs during storage anti-correlates with proteins that mediate the response to hydroperoxides. The abundance of GPx4 in RBCs is 75% heritable and varies at least 4-fold across subjects. Multi-omic meta-analysis of heritable biomolecules links GPx4 to RBC storage hemolysis.
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Affiliation(s)
- Jeffrey M Stolwijk
- Free Radical and Radiation Biology Program, The University of Iowa Carver College of Medicine, Iowa City, IA, USA; Interdisciplinary Graduate Program in Human Toxicology, The University of Iowa, Iowa City, IA, USA
| | - Jonathan A Stefely
- Department of Pathology and Laboratory Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA; Medical Scientist Training Program, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - Mike T Veling
- Department of Systems Biology, Harvard Medical School, Boston, MA, USA; Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, USA
| | - Thomas J van 't Erve
- Free Radical and Radiation Biology Program, The University of Iowa Carver College of Medicine, Iowa City, IA, USA; Interdisciplinary Graduate Program in Human Toxicology, The University of Iowa, Iowa City, IA, USA
| | - Brett A Wagner
- Free Radical and Radiation Biology Program, The University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Thomas J Raife
- Department of Pathology and Laboratory Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA.
| | - Garry R Buettner
- Free Radical and Radiation Biology Program, The University of Iowa Carver College of Medicine, Iowa City, IA, USA.
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31
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Antoniak MA, Pązik R, Bazylińska U, Wiwatowski K, Tomaszewska A, Kulpa-Greszta M, Adamczyk-Grochala J, Wnuk M, Maćkowski S, Lewińska A, Nyk M. Multimodal polymer encapsulated CdSe/Fe 3O 4 nanoplatform with improved biocompatibility for two-photon and temperature stimulated bioapplications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 127:112224. [PMID: 34225869 DOI: 10.1016/j.msec.2021.112224] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 05/26/2021] [Accepted: 05/28/2021] [Indexed: 12/23/2022]
Abstract
Multimodal polymer encapsulated CdSe/Fe3O4 nanoplatforms with dual optical and magnetic properties have been fabricated. We demonstrate that CdSe/Fe3O4 nanocapsules (NCs) upon excitation with UV radiation or NIR fs-laser excitation exhibit intense one- or two-photon emission at 535 nm, whereas the combination of an alternating magnetic field and 808 nm IR laser excitation results in heat generation. Since anticancer therapies require relatively high doses of Fe3O4 nanoparticles (NPs) to induce biologically relevant temperature jumps, the therapeutic effects of 0.1 and 1 mg/mL Fe3O4 NCs and CdSe/Fe3O4 NCs were investigated using breast cancer cell lines, ER-positive MCF-7, and triple-negative MDA-MB-231 cells. Improved biocompatibility of CdSe/Fe3O4 NCs compared to Fe3O4 NCs was revealed at higher NCs concentration suggesting safe potential medical applications of CdSe/Fe3O4 NCs. In contrast, 1 mg/mL Fe3O4 NCs were found to be more cytotoxic to MDA-MB-231 than MCF-7 cells through iron-induced oxidative stress, lipid peroxidation, and concomitant ferroptotic cell death. We believe that Fe3O4 NCs-mediated cellular response may be heterogeneous that reflects, at least in part, cancer cell genotype, molecular phenotype, and pathological classification.
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Affiliation(s)
- Magda A Antoniak
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Robert Pązik
- Department of Biotechnology, Institute of Biology and Biotechnology, College of Natural Sciences, University of Rzeszow, Pigonia 1, 35-310 Rzeszow, Poland
| | - Urszula Bazylińska
- Department of Physical and Quantum Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Kamil Wiwatowski
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Toruń, Grudziądzka 5, 87-100 Toruń, Poland
| | - Anna Tomaszewska
- Department of Biotechnology, Institute of Biology and Biotechnology, College of Natural Sciences, University of Rzeszow, Pigonia 1, 35-310 Rzeszow, Poland
| | - Magdalena Kulpa-Greszta
- Department of Biotechnology, Institute of Biology and Biotechnology, College of Natural Sciences, University of Rzeszow, Pigonia 1, 35-310 Rzeszow, Poland; Faculty of Chemistry, Rzeszow University of Technology, Aleja Powstańców Warszawy 12, 35-959 Rzeszow, Poland
| | - Jagoda Adamczyk-Grochala
- Department of Biotechnology, Institute of Biology and Biotechnology, College of Natural Sciences, University of Rzeszow, Pigonia 1, 35-310 Rzeszow, Poland
| | - Maciej Wnuk
- Department of Biotechnology, Institute of Biology and Biotechnology, College of Natural Sciences, University of Rzeszow, Pigonia 1, 35-310 Rzeszow, Poland
| | - Sebastian Maćkowski
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Toruń, Grudziądzka 5, 87-100 Toruń, Poland
| | - Anna Lewińska
- Department of Biotechnology, Institute of Biology and Biotechnology, College of Natural Sciences, University of Rzeszow, Pigonia 1, 35-310 Rzeszow, Poland.
| | - Marcin Nyk
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
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32
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Petronek MS, Stolwijk JM, Murray SD, Steinbach EJ, Zakharia Y, Buettner GR, Spitz DR, Allen BG. Utilization of redox modulating small molecules that selectively act as pro-oxidants in cancer cells to open a therapeutic window for improving cancer therapy. Redox Biol 2021; 42:101864. [PMID: 33485837 PMCID: PMC8113052 DOI: 10.1016/j.redox.2021.101864] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 01/08/2021] [Accepted: 01/10/2021] [Indexed: 02/07/2023] Open
Abstract
There is a rapidly growing body of literature supporting the notion that differential oxidative metabolism in cancer versus normal cells represents a metabolic frailty that can be exploited to open a therapeutic window into cancer therapy. These cancer cell-specific metabolic frailties may be amenable to manipulation with non-toxic small molecule redox active compounds traditionally thought to be antioxidants. In this review we describe the potential mechanisms and clinical applicability in cancer therapy of four small molecule redox active agents: melatonin, vitamin E, selenium, and vitamin C. Each has shown the potential to have pro-oxidant effects in cancer cells while retaining antioxidant activity in normal cells. This dichotomy can be exploited to improve responses to radiation and chemotherapy by opening a therapeutic window based on a testable biochemical rationale amenable to confirmation with biomarker studies during clinical trials. Thus, the unique pro-oxidant/antioxidant properties of melatonin, vitamin E, selenium, and vitamin C have the potential to act as effective adjuvants to traditional cancer therapies, thereby improving cancer patient outcomes.
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Affiliation(s)
- M S Petronek
- Department of Radiation Oncology, University of Iowa, Iowa City, IA, USA
| | - J M Stolwijk
- Department of Radiation Oncology, University of Iowa, Iowa City, IA, USA
| | - S D Murray
- Department of Cancer Biology, University of Iowa, Iowa City, IA, USA
| | - E J Steinbach
- Department of Radiation Oncology, University of Iowa, Iowa City, IA, USA
| | - Y Zakharia
- Division of Hematology and Oncology, Department of Internal Medicine, University of Iowa, Iowa City, IA, USA
| | - G R Buettner
- Department of Radiation Oncology, University of Iowa, Iowa City, IA, USA
| | - D R Spitz
- Department of Radiation Oncology, University of Iowa, Iowa City, IA, USA
| | - B G Allen
- Department of Radiation Oncology, University of Iowa, Iowa City, IA, USA.
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33
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Kunovac A, Hathaway QA, Pinti MV, Durr AJ, Taylor AD, Goldsmith WT, Garner KL, Nurkiewicz TR, Hollander JM. Enhanced antioxidant capacity prevents epitranscriptomic and cardiac alterations in adult offspring gestationally-exposed to ENM. Nanotoxicology 2021; 15:812-831. [PMID: 33969789 DOI: 10.1080/17435390.2021.1921299] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Maternal engineered nanomaterial (ENM) exposure during gestation has been associated with negative long-term effects on cardiovascular health in progeny. Here, we evaluate an epitranscriptomic mechanism that contributes to these chronic ramifications and whether overexpression of mitochondrial phospholipid hydroperoxide glutathione peroxidase (mPHGPx) can preserve cardiovascular function and bioenergetics in offspring following gestational nano-titanium dioxide (TiO2) inhalation exposure. Wild-type (WT) and mPHGPx (Tg) dams were exposed to nano-TiO2 aerosols with a mass concentration of 12.01 ± 0.50 mg/m3 starting from gestational day (GD) 5 for 360 mins/day for 6 nonconsecutive days over 8 days. Echocardiography was performed in pregnant dams, adult (11-week old) and fetal (GD 14) progeny. Mitochondrial function and global N6-methyladenosine (m6A) content were assessed in adult progeny. MPHGPx enzymatic function was further evaluated in adult progeny and m6A-RNA immunoprecipitation (RIP) was combined with RT-qPCR to evaluate m6A content in the 3'-UTR. Following gestational ENM exposure, global longitudinal strain (GLS) was 32% lower in WT adult offspring of WT dams, with preservation in WT offspring of Tg dams. MPHGPx activity was significantly reduced in WT offspring (29%) of WT ENM-exposed dams, but preserved in the progeny of Tg dams. M6A-RIP-qPCR for the SEC insertion sequence region of mPHGPx revealed hypermethylation in WT offspring from ENM-exposed WT dams, which was thwarted in the presence of the maternal transgene. Our findings implicate that m6A hypermethylation of mPHGPx may be culpable for diminished antioxidant capacity and resultant mitochondrial and cardiac deficits that persist into adulthood following gestational ENM inhalation exposure.
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Affiliation(s)
- Amina Kunovac
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA.,Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA.,Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA
| | - Quincy A Hathaway
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA.,Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA.,Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA
| | - Mark V Pinti
- Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA.,West Virginia University School of Pharmacy, Morgantown, WV, USA
| | - Andrya J Durr
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA.,Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA
| | - Andrew D Taylor
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA.,Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA
| | - William T Goldsmith
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA.,Department of Physiology & Pharmacology, West Virginia University School of Medicine, Morgantown, WV, USA
| | - Krista L Garner
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA.,Department of Physiology & Pharmacology, West Virginia University School of Medicine, Morgantown, WV, USA
| | - Timothy R Nurkiewicz
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA.,Department of Physiology & Pharmacology, West Virginia University School of Medicine, Morgantown, WV, USA
| | - John M Hollander
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA.,Mitochondria, Metabolism & Bioenergetics Working Group, West Virginia University School of Medicine, Morgantown, WV, USA.,Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA
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34
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Wang H, Adamcakova-Dodd A, Flor S, Gosse L, Klenov VE, Stolwijk JM, Lehmler HJ, Hornbuckle KC, Ludewig G, Robertson LW, Thorne PS. Comprehensive Subchronic Inhalation Toxicity Assessment of an Indoor School Air Mixture of PCBs. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:15976-15985. [PMID: 33256405 PMCID: PMC7879961 DOI: 10.1021/acs.est.0c04470] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Few in vivo inhalation studies have explored the toxicity of environmentally relevant mixtures of polychlorinated biphenyls (PCBs). The manufacture of industrial PCBs was banned in 1978, but PCBs continue to be formed in industrial and consumer products. Schools represent a significant source of airborne exposures to legacy and nonlegacy PCBs, placing children at risk. To evaluate the impact of these exposures, we generated an airborne mixture of PCBs, called the School Air Mixture (SAM), to match the profile of an older school from our adolescent cohort study. Female Sprague-Dawley rats were exposed either to SAM or filtered air in nose-only exposure systems, 4 h/day for 4 weeks. Congener-specific air and tissue PCB profiles were assessed using gas chromatography with tandem mass spectrometry (GC-MS/MS). PCB exposures recapitulated the target school air profile with a similarity coefficient, cos θ of 0.83. PCB inhalation yielded μg/g ∑209 PCB levels in tissues. Neurobehavioral testing demonstrated a modest effect on spatial learning and memory in SAM-exposed rats. PCB exposure induced oxidative stress in the liver and lungs, affected the maturational stages of hematopoietic stem cells, reduced telomerase activity in bone marrow cells, and altered the gut microbiota. This is the first study to emulate PCB exposures in a school and comprehensively evaluate toxicity.
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Affiliation(s)
- Hui Wang
- Department of Occupational and Environmental Health, the University of Iowa, Iowa City, Iowa 52242, United States
| | - Andrea Adamcakova-Dodd
- Department of Occupational and Environmental Health, the University of Iowa, Iowa City, Iowa 52242, United States
| | - Susanne Flor
- Department of Occupational and Environmental Health, the University of Iowa, Iowa City, Iowa 52242, United States
| | - Laura Gosse
- Interdisciplinary Graduate Program in Human Toxicology, the University of Iowa, Iowa City, Iowa 52242, United States
| | - Violet E. Klenov
- Department of Obstetrics and Gynecology, the University of Iowa, Iowa City, Iowa 52242, United States
| | - Jeffrey M. Stolwijk
- Interdisciplinary Graduate Program in Human Toxicology, the University of Iowa, Iowa City, Iowa 52242, United States
| | - Hans-Joachim Lehmler
- Department of Occupational and Environmental Health, the University of Iowa, Iowa City, Iowa 52242, United States
- Interdisciplinary Graduate Program in Human Toxicology, the University of Iowa, Iowa City, Iowa 52242, United States
| | - Keri C. Hornbuckle
- Interdisciplinary Graduate Program in Human Toxicology, the University of Iowa, Iowa City, Iowa 52242, United States
- Department of Civil and Environmental Engineering, the University of Iowa, Iowa City, Iowa 52242, United States
| | - Gabriele Ludewig
- Department of Occupational and Environmental Health, the University of Iowa, Iowa City, Iowa 52242, United States
- Interdisciplinary Graduate Program in Human Toxicology, the University of Iowa, Iowa City, Iowa 52242, United States
| | - Larry W. Robertson
- Department of Occupational and Environmental Health, the University of Iowa, Iowa City, Iowa 52242, United States
- Interdisciplinary Graduate Program in Human Toxicology, the University of Iowa, Iowa City, Iowa 52242, United States
| | - Peter S. Thorne
- Department of Occupational and Environmental Health, the University of Iowa, Iowa City, Iowa 52242, United States
- Interdisciplinary Graduate Program in Human Toxicology, the University of Iowa, Iowa City, Iowa 52242, United States
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35
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Stolwijk JM, Garje R, Sieren JC, Buettner GR, Zakharia Y. Understanding the Redox Biology of Selenium in the Search of Targeted Cancer Therapies. Antioxidants (Basel) 2020; 9:E420. [PMID: 32414091 PMCID: PMC7278812 DOI: 10.3390/antiox9050420] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 04/24/2020] [Accepted: 05/10/2020] [Indexed: 12/18/2022] Open
Abstract
Selenium (Se) is an essential trace nutrient required for optimal human health. It has long been suggested that selenium has anti-cancer properties. However, clinical trials have shown inconclusive results on the potential of Se to prevent cancer. The suggested role of Se in the prevention of cancer is centered around its role as an antioxidant. Recently, the potential of selenium as a drug rather than a supplement has been uncovered. Selenium compounds can generate reactive oxygen species that could enhance the treatment of cancer. Transformed cells have high oxidative distress. As normal cells have a greater capacity to meet oxidative challenges than tumor cells, increasing the flux of oxidants with high dose selenium treatment could result in cancer-specific cell killing. If the availability of Se is limited, supplementation of Se can increase the expression and activities of Se-dependent proteins and enzymes. In cell culture, selenium deficiency is often overlooked. We review the importance of achieving normal selenium biology and how Se deficiency can lead to adverse effects. We examine the vital role of selenium in the prevention and treatment of cancer. Finally, we examine the properties of Se-compounds to better understand how each can be used to address different research questions.
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Affiliation(s)
- Jeffrey M. Stolwijk
- Interdisciplinary Graduate Program in Human Toxicology, The University of Iowa, Iowa City, IA 52242, USA;
| | - Rohan Garje
- Department of Internal Medicine, Division of Medical Oncology and Hematology, The University of Iowa Hospital and Clinics—Holden Comprehensive Cancer Center, Iowa City, IA 52242, USA;
| | - Jessica C. Sieren
- Departments of Radiology and Biomedical Engineering, The University of Iowa, Iowa City, IA 52242, USA;
| | - Garry R. Buettner
- Interdisciplinary Graduate Program in Human Toxicology, The University of Iowa, Iowa City, IA 52242, USA;
- Free Radical and Radiation Biology Program, Department of Radiation Oncology, The University of Iowa, Iowa City, IA 52242, USA
| | - Yousef Zakharia
- Department of Internal Medicine, Division of Medical Oncology and Hematology, The University of Iowa Hospital and Clinics—Holden Comprehensive Cancer Center, Iowa City, IA 52242, USA;
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36
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Sun W, Zhu J, Li S, Tang C, Zhao Q, Zhang J. Selenium supplementation protects against oxidative stress-induced cardiomyocyte cell cycle arrest through activation of PI3K/AKT. Metallomics 2020; 12:1965-1978. [PMID: 33237045 DOI: 10.1039/d0mt00225a] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Oxidative stress significantly contributes to heart disease, and thus might be a promising target for ameliorating heart failure. Mounting evidence suggests that selenium has chemotherapeutic potential for treating heart disease due to its regulation of selenoproteins, which play antioxidant regulatory roles. Oxidative stress-induced cardiomyocyte cell cycle arrest contributes to the loss of cardiomyocytes during heart failure. The protective effects and mechanism of selenium against oxidative stress-induced cell cycle arrest in cardiomyocytes warrant further study. H9c2 rat cardiomyoblast cells were treated with hydrogen peroxide in the presence or absence of selenium supplementation. Na2SeO3 pretreatment alleviated H2O2-induced oxidative stress, increased thioredoxin reductase (TXNRD) activity and glutathione peroxidase (GPx) activity and counteracted the H2O2-induced cell cycle arrest at the S phase. These effects were accompanied by attenuation of the H2O2-induced strengthening of the G2/M-phase inhibitory system, including increased mRNA and protein levels of cyclin-dependent kinase 1 (CDK1) and decreased p21 mRNA levels. Notably, Na2SeO3 pretreatment activated the PI3K/AKT signaling pathway, and inhibition of PI3K counteracted the protective effects of selenium on H2O2-induced cell cycle arrest. We corroborated our findings in vivo by inducing oxidative stress in pig heart by feeding a selenium deficient diet, which decreased the TXNRD activity, inactivated PI3K/AKT signaling and strengthened the G2/M-phase inhibitory system. We concluded that the cardioprotective effects of selenium supplementation against oxidative stress-induced cell cycle arrest in cardiomyocytes might be mediated by the selenoprotein-associated (GPx and TXNRD) antioxidant capacity, thereby activating redox status-associated PI3K/AKT pathways, which promote cell cycle progression by targeting the G2/M phase inhibitory system. This study provides new insight into the underlying mechanisms of cardioprotection effects of selenium at the cellular level.
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Affiliation(s)
- Wenjuan Sun
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences of Chinese Academy of Agricultural Sciences, Beijing 100193, China.
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