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Cui J, Li L, Wei S, Wei Y, Gong Y, Yan H, Yu Y, Lin X, Qin H, Li G, Yi L. Involvement of GSTP1 in low dose radiation-induced apoptosis in GM12878 cells. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 273:116128. [PMID: 38387144 DOI: 10.1016/j.ecoenv.2024.116128] [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: 11/05/2023] [Revised: 02/16/2024] [Accepted: 02/18/2024] [Indexed: 02/24/2024]
Abstract
BACKGROUND Low-dose ionizing radiation-induced protection and damage are of great significance among radiation workers. We aimed to study the role of glutathione S-transferase Pi (GSTP1) in low-dose ionizing radiation damage and clarify the impact of ionizing radiation on the biological activities of cells. RESULTS In this study, we collected peripheral blood samples from healthy adults and workers engaged in radiation and radiotherapy and detected the expression of GSTP1 by qPCR. We utilized γ-rays emitted from uranium tailings as a radiation source, with a dose rate of 14 μGy/h. GM12878 cells subjected to this radiation for 7, 14, 21, and 28 days received total doses of 2.4, 4.7, 7.1, and 9.4 mGy, respectively. Subsequent analyses, including flow cytometry, MTS, and other assays, were performed to assess the ionizing radiation's effects on cellular biological functions. In peripheral blood samples collected from healthy adults and radiologic technologist working in a hospital, we observed a decreased expression of GSTP1 mRNA in radiation personnel compared to the healthy controls. In cultured GM12878 cells exposed to low-dose ionizing radiation from uranium tailings, we noted significant changes in cell morphology, suppression of proliferation, delay in cell cycle progression, and increased apoptosis. These effects were partially reversed by overexpression of GSTP1. Moreover, low-dose ionizing radiation increased GSTP1 gene methylation and downregulated GSTP1 expression. Furthermore, low-dose ionizing radiation affected the expression of GSTP1-related signaling molecules. CONCLUSIONS This study shows that low-dose ionizing radiation damages GM12878 cells and affects their proliferation, cell cycle progression, and apoptosis. In addition, GSTP1 plays a modulating role under low-dose ionizing radiation damage conditions. Low-dose ionizing radiation affects the expression of Nrf2, JNK, and other signaling molecules through GSTP1.
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Affiliation(s)
- Jian Cui
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, The First Affiliated Hospital, Institute of Cardiovascular Disease, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Linwei Li
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, The First Affiliated Hospital, Institute of Cardiovascular Disease, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Shuang Wei
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, The First Affiliated Hospital, Institute of Cardiovascular Disease, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Yuanyun Wei
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, The First Affiliated Hospital, Institute of Cardiovascular Disease, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Yaqi Gong
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, The First Affiliated Hospital, Institute of Cardiovascular Disease, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Hongxia Yan
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, The First Affiliated Hospital, Institute of Cardiovascular Disease, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Yueqiu Yu
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, The First Affiliated Hospital, Institute of Cardiovascular Disease, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Xiang Lin
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, The First Affiliated Hospital, Institute of Cardiovascular Disease, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Hui Qin
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, The First Affiliated Hospital, Institute of Cardiovascular Disease, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Guoqing Li
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, The First Affiliated Hospital, Institute of Cardiovascular Disease, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Lan Yi
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, The First Affiliated Hospital, Institute of Cardiovascular Disease, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China.
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Yang S, Li W, Bai X, Di Nunzio G, Fan L, Zhao Y, Ren L, Zhao R, Bian S, Liu M, Wei Y, Zhao D, Wang J. Ginseng-derived nanoparticles alleviate inflammatory bowel disease via the TLR4/MAPK and p62/Nrf2/Keap1 pathways. J Nanobiotechnology 2024; 22:48. [PMID: 38302938 PMCID: PMC10832157 DOI: 10.1186/s12951-024-02313-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 01/26/2024] [Indexed: 02/03/2024] Open
Abstract
Inflammatory bowel disease (IBD) is closely linked to the homeostasis of the intestinal environment, and exosomes can be used to treat IBD due to their high biocompatibility and ability to be effectively absorbed by the intestinal tract. However, Ginseng-derived nanoparticles (GDNPs) have not been studied in this context and their mechanism of action remains unclear. Here, we investigated GDNPs ability to mediate intercellular communication in a complex inflammatory microenvironment in order to treat IBD. We found that GDNPs scavenge reactive oxygen species from immune cells and intestinal epithelial cells, inhibit the expression of pro-inflammatory factors, promote the proliferation and differentiation of intestinal stem cells, as well as enhancing the diversity of the intestinal flora. GDNPs significantly stabilise the intestinal barrier thereby promoting tissue repair. Overall, we proved that GDNPs can ameliorate inflammation and oxidative stress in vivo and in vitro, acting on the TLR4/MAPK and p62/Keap1/Nrf2 pathways, and exerting an anti-inflammatory and antioxidant effect. GDNPs mitigated IBD in mice by reducing inflammatory factors and improving the intestinal environment. This study offers new evidence of the potential therapeutic effects of GDNPs in the context of IBD, providing the conceptual ground for an alternative therapeutic strategy.
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Affiliation(s)
- Song Yang
- Changchun University of Chinese Medicine, 1035 Boshuo Road, Changchun, 130117, Jilin, China
| | - Wenjing Li
- Changchun University of Chinese Medicine, 1035 Boshuo Road, Changchun, 130117, Jilin, China
| | - Xueyuan Bai
- Changchun University of Chinese Medicine, 1035 Boshuo Road, Changchun, 130117, Jilin, China
| | - Giada Di Nunzio
- Division of Cardiovascular Medicine, Department of Medicine, Solna, Karolinska Institutet, 17176, Stockholm, Sweden
| | - Liangliang Fan
- Changchun University of Chinese Medicine, 1035 Boshuo Road, Changchun, 130117, Jilin, China
| | - Yueming Zhao
- Changchun University of Chinese Medicine, 1035 Boshuo Road, Changchun, 130117, Jilin, China
| | - Limei Ren
- Changchun University of Chinese Medicine, 1035 Boshuo Road, Changchun, 130117, Jilin, China
| | - Ronghua Zhao
- Changchun University of Chinese Medicine, 1035 Boshuo Road, Changchun, 130117, Jilin, China
| | - Shuai Bian
- Changchun University of Chinese Medicine, 1035 Boshuo Road, Changchun, 130117, Jilin, China
| | - Meichen Liu
- Changchun University of Chinese Medicine, 1035 Boshuo Road, Changchun, 130117, Jilin, China
| | - Yuchi Wei
- Changchun University of Chinese Medicine, 1035 Boshuo Road, Changchun, 130117, Jilin, China
| | - Daqing Zhao
- Changchun University of Chinese Medicine, 1035 Boshuo Road, Changchun, 130117, Jilin, China
| | - Jiawen Wang
- Changchun University of Chinese Medicine, 1035 Boshuo Road, Changchun, 130117, Jilin, China.
- Division of Cardiovascular Medicine, Department of Medicine, Solna, Karolinska Institutet, 17176, Stockholm, Sweden.
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Zhang Y, Cheng Y, Liu J, Zuo J, Yan L, Thring RW, Ba X, Qi D, Wu M, Gao Y, Tong H. Tauroursodeoxycholic acid functions as a critical effector mediating insulin sensitization of metformin in obese mice. Redox Biol 2022; 57:102481. [PMID: 36148770 PMCID: PMC9493383 DOI: 10.1016/j.redox.2022.102481] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 09/13/2022] [Accepted: 09/14/2022] [Indexed: 11/28/2022] Open
Abstract
Metformin is widely used to surmount insulin resistance (IR) and type 2 diabetes. Accumulating evidence suggests that metformin may improve IR through regulating gut microbiota and bile acids. However, the underlying mechanisms remain unclear. Our metabolomic analysis showed that metformin significantly increased the accumulation of tauroursodeoxycholic acid (TUDCA) in intestine and liver from high-fat diet (HFD)-induced IR mice. TUDCA also alleviated IR, and reduced oxidative stress and intestinal inflammation in ob/ob mice. TUDCA blocked KEAP1 to bind with Nrf2, resulting in Nrf2 translocation into nuclear and initiating the transcription of antioxidant genes, which eventually reduced intracellular ROS accumulation and improved insulin signaling. Analysis of gut microbiota further revealed that metformin reduced the relative abundance of Bifidobacterium, which produces bile salt hydrolase (BSH). The reduction in BSH was probably crucial for the accumulation of TUDCA. Metformin also increased the proportion of Akkermanisia muciniphlia in gut microbiota of ob/ob mice via TUDCA. These beneficial effects of metformin in remodeling gut microbiota, reducing oxidative stress and improving insulin sensitivity were partly due to the accumulation of TUDCA, suggesting that TUDCA may be a potential therapy for metabolic syndrome.
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Affiliation(s)
- Ya Zhang
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou, China; Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China
| | - Yang Cheng
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou, China
| | - Jian Liu
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou, China
| | - Jihui Zuo
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou, China
| | - Liping Yan
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou, China
| | - Ronald W Thring
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou, China
| | - Xueqing Ba
- Key Laboratory of Molecular Epigenetics of Ministry of Education, Northeast Normal University, Changchun, Jilin, China
| | - Dake Qi
- College of Pharmacy, University of Manitoba, Winnipeg, Canada
| | - Mingjiang Wu
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou, China
| | - Yitian Gao
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou, China.
| | - Haibin Tong
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou, China.
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Seo J, Lee U, Seo S, Wibowo AE, Pongtuluran OB, Lee K, Han SB, Cho S. Anti-inflammatory and antioxidant activities of methanol extract of Piper betle Linn. (Piper betle L.) leaves and stems by inhibiting NF-κB/MAPK/Nrf2 signaling pathways in RAW 264.7 macrophages. Biomed Pharmacother 2022; 155:113734. [PMID: 36152408 DOI: 10.1016/j.biopha.2022.113734] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 09/15/2022] [Accepted: 09/19/2022] [Indexed: 11/18/2022] Open
Abstract
Oxidative stress and chronic inflammation are closely linked to various diseases. However, previous studies have demonstrated that plant extracts could prevent and alleviate these adverse outcomes. Piper betle Linn. (Piper betle L.) is a cosmopolitan plant that belongs to the Piperaceae family, whose leaves are edible and possess several health benefits. This study sought to characterize the anti-inflammatory and antioxidant effects of a methanol extract of Piper betle L. leaves and stems (MPBLLS). MPBLLS was found to have a dose-dependent radical scavenging effect, as demonstrated by the 2,2-diphenyl-1-picrylhydrazyl assay. Additionally, MPBLLS inhibited the lipopolysaccharide (LPS)-stimulated production of nitric oxide and prostaglandin E2 by reducing the expression of inducible nitric oxide synthase and cyclooxygenase-2 in RAW 264.7 macrophages without affecting cell viability. Furthermore, our findings suggested that the inhibitory effects of MPBLLS on pro-inflammatory cytokines such as tumor necrosis factor-α, interleukin-1β, and interleukin-6 were due to the inhibition of the nuclear factor-κB (NF-κB) and mitogen-activated protein kinase (MAPK) signaling pathways in LPS-treated RAW 264.7 macrophages. MPBLLS and hydroxychavicol, a major constituent of MPBLLS, suppressed LPS-induced translocation of NF-κB p65 from cytoplasm to nucleus. Interestingly, MPBLLS increased nuclear factor erythroid 2-related factor 2 (Nrf2) protein levels and transcription levels of Nrf2 target genes in a dose-dependent manner. Collectively, our findings suggest that MPBLLS could serve as a basis for the development of novel orally-administered therapies due to its inhibitory effects on oxidative and inflammatory stress. DATA AVAILABILITY: The data presented in this study are available on request from the corresponding author.
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Affiliation(s)
- Jihye Seo
- Laboratory of Molecular and Pharmacological Cell Biology, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea.
| | - Unju Lee
- Laboratory of Molecular and Pharmacological Cell Biology, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea.
| | - Sumin Seo
- Biomedical Mass Spectrometry Lab, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea.
| | - Agung Eru Wibowo
- Research Center for Pharmaceutical Ingredients and Traditional Medicine, Health Research Organization, National Research and Innovation Agency (BRIN), Cibinong, Bogor, Jawa Barat 16911, Indonesia.
| | - Olivia Bunga Pongtuluran
- Research Center for Agroindustry, Food and Agriculture Research Organization, National Research and Innovation Agency (BRIN), Cibinong, Bogor, Jawa Barat 16911, Indonesia.
| | - KyuJong Lee
- International Biological Material Research Center, Korea Research Institute of Bioscience & Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea.
| | - Sang Beom Han
- Biomedical Mass Spectrometry Lab, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea.
| | - Sayeon Cho
- Laboratory of Molecular and Pharmacological Cell Biology, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea.
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Deng T, Xu X, Fu J, Xu Y, Qu W, Pi J, Wang H. Application of ARE-reporter systems in drug discovery and safety assessment. Toxicol Appl Pharmacol 2022; 454:116243. [PMID: 36115658 DOI: 10.1016/j.taap.2022.116243] [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: 05/31/2022] [Revised: 08/16/2022] [Accepted: 09/09/2022] [Indexed: 11/28/2022]
Abstract
The human body is continuously exposed to xenobiotics and internal or external oxidants. The health risk assessment of exogenous chemicals remains a complex and challenging issue. Alternative toxicological test methods have become an essential strategy for health risk assessment. As a core regulator of constitutive and inducible expression of antioxidant response element (ARE)-dependent genes, nuclear factor erythroid 2-related factor 2 (Nrf2) plays a critical role in maintaining cellular redox homeostasis. Consistent with the properties of Nrf2-mediated antioxidant response, Nrf2-ARE activity is a direct indicator of oxidative stress and thus has been used to identify and characterize oxidative stressors and redox modulators. To screen and distinguish chemicals or environmental insults that affect the cellular antioxidant activity and/or induce oxidative stress, various in vitro cell models expressing distinct ARE reporters with high-throughput and high-content properties have been developed. These ARE-reporter systems are currently widely applied in drug discovery and safety assessment. In the present review, we provide an overview of the basic structures and applications of various ARE-reporter systems employed for discovering Nrf2-ARE modulators and characterizing oxidative stressors.
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Affiliation(s)
- Tianqi Deng
- Laboratory of Chronic Disease and Environmental Genomics, School of Public Health, China Medical University, Shenyang 110122, China
| | - Xiaoge Xu
- Laboratory of Chronic Disease and Environmental Genomics, School of Public Health, China Medical University, Shenyang 110122, China
| | - Jingqi Fu
- Program of Environmental Toxicology, School of Public Health, China Medical University, Shenyang 110122, China
| | - Yuanyuan Xu
- Laboratory of Chronic Disease and Environmental Genomics, School of Public Health, China Medical University, Shenyang 110122, China
| | - Weidong Qu
- Key Laboratory of Public Health Safety, Ministry of Education, Department of Environmental Health, School of Public Health, Fudan University, Shanghai 200032, China
| | - Jingbo Pi
- Program of Environmental Toxicology, School of Public Health, China Medical University, Shenyang 110122, China.
| | - Huihui Wang
- Laboratory of Chronic Disease and Environmental Genomics, School of Public Health, China Medical University, Shenyang 110122, China.
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Iheagwam FN, Batiha GES, Ogunlana OO, Chinedu SN. Terminalia catappa Extract Palliates Redox Imbalance and Inflammation in Diabetic Rats by Upregulating Nrf-2 Gene. Int J Inflam 2021; 2021:9778486. [PMID: 34956587 PMCID: PMC8702315 DOI: 10.1155/2021/9778486] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/09/2021] [Accepted: 11/25/2021] [Indexed: 12/30/2022] Open
Abstract
This study aims at evaluating the ameliorative role of Terminalia catappa aqueous leaf extract (TCA) on hyperglycaemia-induced oxidative stress and inflammation in a high-fat, low dose streptozotocin-induced type 2 diabetic rat model. Experimental rats were treated orally with 400 and 800 mg/kg bw TCA daily for four weeks. Antioxidant enzyme activities, plasma glucose concentration, protein concentration, oxidative stress, and inflammation biomarkers were assayed using standard methods. Hepatic relative expressions of tumour necrosis factor-alpha (TNF-α), interleukin-six (IL-6), and nuclear factor-erythroid 2 related factor 2 (Nrf-2) were also assessed. Molecular docking and prediction of major TCA phytoconstituents' biological activity related to T2DM-induced oxidative stress were evaluated in silico. Induction of diabetes significantly (p < 0.05) reduced superoxide dismutase, glutathione-S-transferase, and peroxidase activities. Glutathione and protein stores were significantly (p < 0.05) depleted, while glucose, MDA, interleukin-six (IL-6), and tumour necrosis factor-α (TNF-α) concentrations were significantly (p < 0.05) increased. A significant (p < 0.05) upregulation of hepatic TNF-α and IL-6 expression and downregulation (p < 0.05) of Nrf-2 expression were observed during diabetes onset. TCA treatment significantly (p < 0.05) modulated systemic diabetic-induced oxidative stress and inflammation, mRNA expression dysregulation, and dysregulated macromolecule metabolism. However, only 800 mg/kg TCA treatment significantly (p < 0.05) downregulated hepatic TNF-α expression. 9-Oxabicyclo[3.3.1]nonane-2,6-diol and 1,2,3-Benzenetriol bound comparably to glibenclamide in Nrf-2, IL-6, and TNF-α binding pockets. They were predicted to be GST A and M substrate, JAK2 expression, ribulose-phosphate 3-epimerase, NADPH peroxidase, and glucose oxidase inhibitors. These results suggest that TCA ameliorates hyperglycaemia-induced oxidative stress and inflammation by activating Nrf-2 gene.
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Affiliation(s)
- Franklyn Nonso Iheagwam
- Department of Biochemistry, Covenant University, P.M.B. 1023 Ota, Ogun State, Nigeria
- Covenant University Public Health and Wellbeing Research Cluster (CUPHWERC), Covenant University, P.M.B. 1023 Ota, Ogun State, Nigeria
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, AlBeheira, Egypt
| | - Olubanke Olujoke Ogunlana
- Department of Biochemistry, Covenant University, P.M.B. 1023 Ota, Ogun State, Nigeria
- Covenant University Public Health and Wellbeing Research Cluster (CUPHWERC), Covenant University, P.M.B. 1023 Ota, Ogun State, Nigeria
| | - Shalom Nwodo Chinedu
- Department of Biochemistry, Covenant University, P.M.B. 1023 Ota, Ogun State, Nigeria
- Covenant University Public Health and Wellbeing Research Cluster (CUPHWERC), Covenant University, P.M.B. 1023 Ota, Ogun State, Nigeria
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Chen L, Zhang T, Ge M, Liu Y, Xing Y, Liu L, Li F, Cheng L. The Nrf2-Keap1 pathway: A secret weapon against pesticide persecution in Drosophila Kc cells. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2020; 164:47-57. [PMID: 32284136 DOI: 10.1016/j.pestbp.2019.12.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 12/10/2019] [Accepted: 12/26/2019] [Indexed: 06/11/2023]
Abstract
Nrf2-Keap1 pathway defends organisms against the detrimental effects of oxidative stress, and play pivotal roles in preventing xenobiotic-related toxicity. We designed experiments to explore and verify its role and function under deltamethrin (DM) stress. In experiments, DM was selected as the inducer, and Drosophila Kc cells were treated as the objects. The result showed the oxidative stress of cells proliferated in a very short time after DM treatment, reaching the maximum after one hour of treatment. The experimental data showed Nrf2 could be up-regulated and activated by DM which were manifested by the increase of Nrf2 mRNA, Nrf2 protein in the nucleus and the expression of detoxification enzyme genes. We further tested the activity of all groups, and found the survival rate of cells was basically proportional to the expression of Nrf2. Based on the above experimental results, Keap1 overexpression (K+), Nrf2 overexpression (N+) or interference (N-) cells were used to verified the relationship between Nrf2, cell survival and detoxification enzymes expression. We found the cell survival rate of N+ group was significantly higher than that of other groups and the expression of detoxification enzymes were increased compared to the control group. These results demonstrated that Nrf2 is related to cell detoxification and associated with the tolerance to DM. Our evidence suggested Nrf2 is a potential therapeutic target for oxidative stress and a potential molecular target gene of resistance control.
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Affiliation(s)
- Lu Chen
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Tingting Zhang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Mengying Ge
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Yahui Liu
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Yuping Xing
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Liu Liu
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Fengliang Li
- Institute of Plant Protection, Guizhou Academy of Agricultural Sciences, Guiyang 550009, China
| | - Luogen Cheng
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China.
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8
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Cui J, Li G, Yin J, Li L, Tan Y, Wei H, Liu B, Deng L, Tang J, Chen Y, Yi L. GSTP1 and cancer: Expression, methylation, polymorphisms and signaling (Review). Int J Oncol 2020; 56:867-878. [PMID: 32319549 DOI: 10.3892/ijo.2020.4979] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 01/17/2020] [Indexed: 01/04/2023] Open
Abstract
Glutathione S‑transferase Pi (GSTP1) is an isozyme encoded by the GST pi gene that plays an important regulatory role in detoxification, anti‑oxidative damage, and the occurrence of various diseases. The aim of the present study was to review the association between the expression of GSTP1 and the development and treatment of various cancers, and discuss GSTP1 methylation in several malignant tumors, such as prostate, breast and lung cancer, as well as hepatocellular carcinoma; to review the association between polymorphism of the GSTP1 gene and various diseases; and to review the effects of GSTP1 on electrophilic oxidative stress, cell signal transduction, and the regulation of carcinogenic factors. Collectively, GSTP1 plays a major role in the development of various diseases.
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Affiliation(s)
- Jian Cui
- Hengyang Medical College, Institute of Cytology and Genetics, Key Laboratory of Ecological Environment and Critical Human Diseases Prevention of Hunan Province Department of Education, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Guoqing Li
- Hengyang Medical College, Institute of Cytology and Genetics, Key Laboratory of Ecological Environment and Critical Human Diseases Prevention of Hunan Province Department of Education, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Jie Yin
- Hengyang Medical College, Institute of Cytology and Genetics, Key Laboratory of Ecological Environment and Critical Human Diseases Prevention of Hunan Province Department of Education, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Linwei Li
- Department of Laboratory, The Second Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Yue Tan
- Hengyang Medical College, Institute of Cytology and Genetics, Key Laboratory of Ecological Environment and Critical Human Diseases Prevention of Hunan Province Department of Education, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Haoran Wei
- Hengyang Medical College, Institute of Cytology and Genetics, Key Laboratory of Ecological Environment and Critical Human Diseases Prevention of Hunan Province Department of Education, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Bang Liu
- Hengyang Medical College, Institute of Cytology and Genetics, Key Laboratory of Ecological Environment and Critical Human Diseases Prevention of Hunan Province Department of Education, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Lihong Deng
- Hengyang Medical College, Institute of Cytology and Genetics, Key Laboratory of Ecological Environment and Critical Human Diseases Prevention of Hunan Province Department of Education, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Jialu Tang
- Hengyang Medical College, Institute of Cytology and Genetics, Key Laboratory of Ecological Environment and Critical Human Diseases Prevention of Hunan Province Department of Education, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Yonglin Chen
- Hengyang Medical College, Institute of Cytology and Genetics, Key Laboratory of Ecological Environment and Critical Human Diseases Prevention of Hunan Province Department of Education, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Lan Yi
- Hengyang Medical College, Institute of Cytology and Genetics, Key Laboratory of Ecological Environment and Critical Human Diseases Prevention of Hunan Province Department of Education, University of South China, Hengyang, Hunan 421001, P.R. China
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9
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Nonaka S, Kawakami S, Maruki-Uchida H, Mori S, Morita M. Piceatannol markedly upregulates heme oxygenase-1 expression and alleviates oxidative stress in skeletal muscle cells. Biochem Biophys Rep 2019; 18:100643. [PMID: 31080897 PMCID: PMC6500920 DOI: 10.1016/j.bbrep.2019.100643] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 04/17/2019] [Accepted: 04/22/2019] [Indexed: 02/06/2023] Open
Abstract
Piceatannol (PIC), a phytochemical, is abundant in passion fruit (Passiflora edulis) seeds. In this study, we investigated the effects of PIC on the expression levels of antioxidant enzymes in C2C12 skeletal muscle cells and compared its effects with those of PIC analogues and polyphenols. We also evaluated its effects on hydrogen peroxide–induced accumulation of reactive oxygen species in C2C12 myotubes. Treatment with PIC led to dose-dependent upregulation of heme oxygenase-1 (Ho-1) and superoxide dismutase 1 (Sod1) mRNA expression in C2C12 myotubes. PIC was the most potent inducer of Ho-1 among the PIC analogues and major polyphenols tested. In addition, treatment with PIC suppressed the hydrogen peroxide–induced increase in intracellular reactive oxygen species levels. Our results suggest that PIC protects skeletal muscles from oxidative stress by activating antioxidant enzymes such as HO-1 and SOD1 and can therefore help prevent oxidative stress–induced muscle dysfunction such as muscle fatigue and sarcopenia. PIC induced antioxidant enzymes in C2C12 skeletal muscle cell line. PIC was the most potent inducer of Ho-1 among other polyphenols tested. Induction potency of PIC for Sod1 was similar level with those of other polyphenols. PIC suppressed the hydrogen peroxide-induced increase in intracellular ROS levels.
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Affiliation(s)
- Shiori Nonaka
- Research and Development Institute, Health Science Research Center, Morinaga & Co., Ltd., 2-1-1 Shimosueyoshi, Tsurumi-ku, Yokohama, Kanagawa, 230-8504, Japan
| | - Shinpei Kawakami
- Research and Development Institute, Health Science Research Center, Morinaga & Co., Ltd., 2-1-1 Shimosueyoshi, Tsurumi-ku, Yokohama, Kanagawa, 230-8504, Japan
| | - Hiroko Maruki-Uchida
- Research and Development Institute, Health Science Research Center, Morinaga & Co., Ltd., 2-1-1 Shimosueyoshi, Tsurumi-ku, Yokohama, Kanagawa, 230-8504, Japan
| | - Sadao Mori
- Research and Development Institute, Health Science Research Center, Morinaga & Co., Ltd., 2-1-1 Shimosueyoshi, Tsurumi-ku, Yokohama, Kanagawa, 230-8504, Japan
| | - Minoru Morita
- Research and Development Institute, Health Science Research Center, Morinaga & Co., Ltd., 2-1-1 Shimosueyoshi, Tsurumi-ku, Yokohama, Kanagawa, 230-8504, Japan
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10
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Ji S, Xiong Y, Zhao X, Liu Y, Yu LQ. Effect of the Nrf2-ARE signaling pathway on biological characteristics and sensitivity to sunitinib in renal cell carcinoma. Oncol Lett 2019; 17:5175-5186. [PMID: 31186733 DOI: 10.3892/ol.2019.10156] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 01/17/2019] [Indexed: 12/30/2022] Open
Abstract
The aim of the present study was to examine the effects of the nuclear factor erythroid-2 related factor 2-antioxidant-responsive element (Nrf2-ARE) signaling pathway on the biological characteristics and sensitivity to targeted therapy in human renal cell carcinoma (RCC) cells. RCC tissues and adjacent tissues were collected and assessed by immunohistochemistry to determine the expression of Nrf2, NAD(P)H dehydrogenase [quinone] 1 (NQO1) and heme oxygenase-1 (HO-1) to analyze the clinicopathological features of RCC. A series of in vitro experiments were conducted to analyze the biological characteristics of Nrf2-ARE signaling in RCC. The renal cancer cell line, 786-0 was used, and cells was divided into a mock group, negative control group and small hairpin (sh)RNA-Nrf2 group. A Cell Counting Kit-8 assay was performed alongside flow cytometry to detect cell viability, cell cycle stage and apoptosis following treatment with sunitinib. The results demonstrated that Nrf2, NQO1 and HO-1 were significantly upregulated in RCC tissues compared with adjacent tissues and were associated with tumor node metastasis stage, Fuhrman classification and lymph node metastasis. Following shRNA-Nrf2 transfection, the 786-0 cells demonstrated a significant decrease in viability, cell invasion and scratch healing rate, and the mRNA and protein expression levels of Nrf2, NQO1, HO-1 and glutathione transferase were significantly decreased, which enhanced the sensitivity to sunitinib, arrested cells in the G0/G1 phase and increased apoptosis. In conclusion, Nrf2-ARE signaling is important for RCC progression, and its inhibition may increase sensitivity to targeted drugs to provide novel developments for RCC treatment.
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Affiliation(s)
- Shiliang Ji
- Department of Pharmacy, Suzhou Science and Technology Town Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu 215153, P.R. China
| | - Yufeng Xiong
- Department of Clinical Laboratory, Guangdong Women and Children Health Hospital, Guangzhou, Guangdong 510000, P.R. China
| | - Xingxing Zhao
- Department of Neonatology, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu 215000, P.R. China
| | - Yanli Liu
- College of Pharmaceutical Science, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Li Qiang Yu
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215000, P.R. China
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11
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Ding X, Jian T, Wu Y, Zuo Y, Li J, Lv H, Ma L, Ren B, Zhao L, Li W, Chen J. Ellagic acid ameliorates oxidative stress and insulin resistance in high glucose-treated HepG2 cells via miR-223/keap1-Nrf2 pathway. Biomed Pharmacother 2018; 110:85-94. [PMID: 30466006 DOI: 10.1016/j.biopha.2018.11.018] [Citation(s) in RCA: 120] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 10/30/2018] [Accepted: 11/06/2018] [Indexed: 12/27/2022] Open
Abstract
As a promising new target, miR-233 may regulate oxidative stress by targeting keap1-Nrf2 system to affect the pathological process of liver injury in T2DM. Ellagic acid (EA) is versatile for protecting oxidative stress damage and metabolic disorders. In the present study, we investigated the effect of EA on oxidative stress and insulin resistance in high glucose-induced T2DM HepG2 cells and examined the role of miR-223/keap1-Nrf2 pathway in system. HepG2 cells were incubated in 30 mM of glucose, with or without EA (15 and 30 μM) or metformin (Met, 150 μM) for 12 h. Glucose consumption, phosphorylation of IRS1, Akt and ERK under insulin stimulation, ROS and O2- production, MDA level, SOD activity and miR-223 expression, as well as protein levels of keap1, Nrf2, HO-1, SOD1 and SOD2 were analyzed. Furthermore, dual luciferase reporter assay, miR-223 mimic and inhibitor were implemented in cellular studies to explore the possible mechanism. EA upregulated glucose consumption, IRS1, Akt and ERK phosphorylation under insulin stimulation, reduced ROS and O2- production and MDA level, and increased SOD activity in high glucose-exposed HepG2 cells. In addition, EA elevated miR-223 expression level, downregulated mRNA and protein levels of keap1, and upregulated Nrf2, HO-1, SOD1 and SOD2 protein levels in this cell model. What's more, dual luciferase reporter assay, miR-223 mimic and inhibitor transfection confirmed that EA activated keap1-Nrf2 system via elevating miR-223. The miR-223, a negative regulator of keap1, represents an attractive therapeutic target in hepatic injury in T2DM. EA ameliorates oxidative stress and insulin resistance via miR-223-mediated keap1-Nrf2 activation in high glucose-induced T2DM HepG2 cells.
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Affiliation(s)
- Xiaoqin Ding
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Tunyu Jian
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Yuexian Wu
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Yuanyuan Zuo
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Jiawei Li
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Han Lv
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Li Ma
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Bingru Ren
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Lei Zhao
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Weilin Li
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; Nanjing Forestry University, Nanjing 210037, China.
| | - Jian Chen
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China.
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Dutta S, Dey P, Saha MR, Sarkar I, Sarkar R, Mardi JA, Barman J, Sen A, Chaudhuri TK. Differential interaction with O 2 and N 2 free-radicals, phytochemical fingerprinting and molecular docking reveals potent antioxidant activities of three major recreational foods of the Indian subcontinent. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.10.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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13
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Chang Y, Wei W, Tong L, Liu Y, Zhou A, Chen J, Wei R, Zhang P, Su X. Weikangning therapy in functional dyspepsia and the protective role of Nrf2. Exp Ther Med 2017; 14:2885-2894. [PMID: 28928800 PMCID: PMC5590041 DOI: 10.3892/etm.2017.4892] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 05/16/2017] [Indexed: 12/20/2022] Open
Abstract
Functional dyspepsia (FD) is a non-organic gastrointestinal disorder that has a marked negative impact on quality of life. Compared with conventional pharmacological therapies, the traditional Chinese medicine weikangning (WKN) is a safe and effective treatment for FD. The present study aimed to determine the molecular mechanisms underlying the efficacy of WKN. The effect of different concentrations of WKN on the proliferation of the human gastric mucosal epithelial cell line GES-1 was assessed. The optimal WKN concentration to promote cell proliferation was determined, and this concentration was used to examine the effect of WKN compared with a domperidone-treated positive control group on the antioxidant capacity of GES-1 cells. The effect of WKN treatment on the growth and antioxidant activity of GES-1 cells was also assessed following nuclear factor erythroid 2 like 2 (Nrf2) knockdown. The optimal WKN dose for promoting cell growth was determined to be 0.025 mg/ml; at this concentration the expression of the antioxidant proteins glutathione S-transferase P and superoxide dismutase 2 (SOD2) were significantly elevated (P<0.0001). Furthermore, the amount of reduced glutathione and activity of SOD2 were significantly increased (P<0.0001 and P<0.01, respectively), and malondialdehyde content was significantly decreased, compared with the controls (P<0.001). With WKN treatment, the transcription of Nrf2 and its downstream genes were significantly upregulated (P<0.01), and the level and nuclear distribution of Nrf2 protein was also markedly increased. Following Nrf2 silencing, the protective antioxidant effects of WKN treatment were impaired and GES-1 cell proliferation decreased. The results of the present study suggest that the efficacy of WKN in protecting gastric mucosal epithelial cells in FD is antioxidant-dependent and mediated by Nrf2 activation.
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Affiliation(s)
- Yujuan Chang
- Department of Postgraduate Studies, Oriental Hospital of Beijing University of Chinese Medicine, Beijing 100029, P.R. China.,Department of Gastroenterology, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing 100102, P.R. China
| | - Wei Wei
- Department of Gastroenterology, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing 100102, P.R. China
| | - Li Tong
- Institute of Cellular Biology, College of Life Sciences, Beijing Normal University, Beijing 100875, P.R. China
| | - Yanjun Liu
- Department of Gastroenterology, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing 100102, P.R. China
| | - Aimin Zhou
- Department of Chemistry, Cleveland State University, Cleveland, OH 44114, USA
| | - Jiande Chen
- Department of Gastroenterology, Johns Hopkins University School of Medicine, Baltimore, MD 44115, USA
| | - Ruhan Wei
- Department of Chemistry, Cleveland State University, Cleveland, OH 44114, USA
| | - Ping Zhang
- Department of Pathology, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing 100102, P.R. China
| | - Xiaolan Su
- Department of Gastroenterology, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing 100102, P.R. China
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Piper betle L. Modulates Senescence-Associated Genes Expression in Replicative Senescent Human Diploid Fibroblasts. BIOMED RESEARCH INTERNATIONAL 2017; 2017:6894026. [PMID: 28596968 PMCID: PMC5449738 DOI: 10.1155/2017/6894026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 03/31/2017] [Accepted: 04/13/2017] [Indexed: 11/17/2022]
Abstract
Piper betle (PB) is a traditional medicine that is widely used to treat different diseases around Asian region. The leaf extracts contain various bioactive compounds, which were reported to have antidiabetic, antibacterial, anti-inflammatory, antioxidant, and anticancer effects. In this study, the effect of PB aqueous extracts on replicative senescent human diploid fibroblasts (HDFs) was investigated by determining the expressions of senescence-associated genes using quantitative PCR. Our results showed that PB extracts at 0.4 mg/ml can improve cell proliferation of young (143%), presenescent (127.3%), and senescent (157.3%) HDFs. Increased expressions of PRDX6, TP53, CDKN2A, PAK2, and MAPK14 were observed in senescent HDFs compared to young and/or presenescent HDFs. Treatment with PB extracts modulates the transcriptional profile changes in senescent HDFs. By contrast, expressions of SOD1 increased, whereas GPX1, PRDX6, TP53, CDKN2A, PAK2, and MAPK14 were decreased in PB-treated senescent HDFs compared to untreated senescent HDFs. In conclusion, this study indicates the modulation of PB extracts on senescence-associated genes expression of replicative senescent HDFs. Further studies warrant determining the mechanism of PB in modulating replicative senescence of HDFs through these signaling pathways.
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Oregano Essential Oil Induces SOD1 and GSH Expression through Nrf2 Activation and Alleviates Hydrogen Peroxide-Induced Oxidative Damage in IPEC-J2 Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:5987183. [PMID: 28105249 PMCID: PMC5220500 DOI: 10.1155/2016/5987183] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 09/29/2016] [Accepted: 11/14/2016] [Indexed: 12/27/2022]
Abstract
Oregano essential oil (OEO) has long been used to improve the health of animals, particularly their intestinal health. The health benefits of OEO are generally attributed to antioxidative actions, but the mechanisms remain unclear. Here, we investigate the antioxidative effects of OEO and their underlying molecular mechanisms in porcine small intestinal epithelial (IPEC-J2) cells. We found that OEO treatment prior to hydrogen peroxide (H2O2) exposure increased cell viability and prevented lactate dehydrogenase (LDH) release into the medium. H2O2-induced reactive oxygen species (ROS) and malondialdehyde (MDA) were remarkably suppressed by OEO. OEO dose-dependently increased mRNA and protein levels of the nuclear factor-erythroid 2-related factor-2 (Nrf2) target genes Cu/Zn-superoxide dismutase (SOD1) and g-glutamylcysteine ligase (GCLC, GLCM), as well as intracellular concentrations of SOD1 and glutathione. OEO also increased intranuclear expression of Nrf2 and the activity of an antioxidant response element reporter plasmid in IPEC-J2 cells. The OEO-induced expression of Nrf2-regulated genes and increased SOD1 and glutathione concentrations in IPEC-J2 cells were reduced by Nrf2 small interfering (si) RNAs, counteracting the protective effects of OEO against oxidative stress in IPEC-J2 cells. Our results suggest that OEO protects against H2O2-induced IPEC-J2 cell damage by inducing Nrf2 and related antioxidant enzymes.
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16
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Aliahmat NS, Abdul Sani NF, Wan Hasan WN, Makpol S, Wan Ngah WZ, Mohd Yusof YA. Piper betle Induced Cytoprotective Genes and Proteins via the Nrf2/ARE Pathway in Aging Mice. JOURNAL OF NUTRIGENETICS AND NUTRIGENOMICS 2016; 9:243-253. [PMID: 28002828 DOI: 10.1159/000452407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 10/11/2016] [Indexed: 12/13/2022]
Abstract
BACKGROUND/AIMS The objective of this study was to elucidate the underlying antioxidant mechanism of aqueous extract of Piper betle (PB) in aging rats. The nuclear factor erythroid 2-related factor 2 (Nrf2)/ARE pathway involving phase II detoxifying and antioxidant enzymes plays an important role in the antioxidant system by reducing electrophiles and reactive oxygen species through induction of phase II enzymes and proteins. METHODS Genes and proteins of phase II detoxifying antioxidant enzymes were analyzed by QuantiGenePlex 2.0 Assay and Western blot analysis. RESULTS PB significantly induced genes and proteins of phase II and antioxidant enzymes, NAD(P)H quinone oxidoreductase 1, and catalase in aging mice (p < 0.05). The expression of these enzymes were stimulated via translocation of Nrf2 into the nucleus, indicating the involvement of ARE, a cis-acting motif located in the promoter region of nearly all phase II genes. CONCLUSIONS PB was testified for the first time to induce cytoprotective genes through the Nrf2/ARE signaling pathway, thus unraveling the antioxidant mechanism of PB during the aging process.
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Affiliation(s)
- Nor Syahida Aliahmat
- Department of Biochemistry, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
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17
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de Wit NJW, Hulst M, Govers C, van der Meulen J, van Hoef A, Stoopen G, Hamers A, Hoekman A, de Vos R, Bovee TFH, Smits M, Mes JJ, Hendriksen PJM. Effects of Digested Onion Extracts on Intestinal Gene Expression: An Interspecies Comparison Using Different Intestine Models. PLoS One 2016; 11:e0160719. [PMID: 27631494 PMCID: PMC5025074 DOI: 10.1371/journal.pone.0160719] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 07/22/2016] [Indexed: 01/10/2023] Open
Abstract
Human intestinal tissue samples are barely accessible to study potential health benefits of nutritional compounds. Numbers of animals used in animal trials, however, need to be minimalized. Therefore, we explored the applicability of in vitro (human Caco-2 cells) and ex vivo intestine models (rat precision cut intestine slices and the pig in-situ small intestinal segment perfusion (SISP) technique) to study the effect of food compounds. In vitro digested yellow (YOd) and white onion extracts (WOd) were used as model food compounds and transcriptomics was applied to obtain more insight into which extent mode of actions depend on the model. The three intestine models shared 9,140 genes which were used to compare the responses to digested onions between the models. Unsupervised clustering analysis showed that genes up- or down-regulated by WOd in human Caco-2 cells and rat intestine slices were similarly regulated by YOd, indicating comparable modes of action for the two onion species. Highly variable responses to onion were found in the pig SISP model. By focussing only on genes with significant differential expression, in combination with a fold change > 1.5, 15 genes showed similar onion-induced expression in human Caco-2 cells and rat intestine slices and 2 overlapping genes were found between the human Caco-2 and pig SISP model. Pathway analyses revealed that mainly processes related to oxidative stress, and especially the Keap1-Nrf2 pathway, were affected by onions in all three models. Our data fit with previous in vivo studies showing that the beneficial effects of onions are mostly linked to their antioxidant properties. Taken together, our data indicate that each of the in vitro and ex vivo intestine models used in this study, taking into account their limitations, can be used to determine modes of action of nutritional compounds and can thereby reduce the number of animals used in conventional nutritional intervention studies.
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Affiliation(s)
- Nicole J. W. de Wit
- Food & Biobased Research, Wageningen University and Research Centre, Wageningen, The Netherlands
| | - Marcel Hulst
- Wageningen Livestock Research, Wageningen University and Research Centre, Wageningen, The Netherlands
| | - Coen Govers
- Food & Biobased Research, Wageningen University and Research Centre, Wageningen, The Netherlands
| | - Jan van der Meulen
- Wageningen Livestock Research, Wageningen University and Research Centre, Wageningen, The Netherlands
| | - Angeline van Hoef
- RIKILT-Institute of Food Safety Wageningen University and Research Centre, Wageningen, The Netherlands
| | - Geert Stoopen
- RIKILT-Institute of Food Safety Wageningen University and Research Centre, Wageningen, The Netherlands
| | - Astrid Hamers
- RIKILT-Institute of Food Safety Wageningen University and Research Centre, Wageningen, The Netherlands
| | - Arjan Hoekman
- Wageningen Livestock Research, Wageningen University and Research Centre, Wageningen, The Netherlands
| | - Ric de Vos
- Plant Research International, Wageningen University and Research Centre, Wageningen, The Netherlands
| | - Toine F. H. Bovee
- RIKILT-Institute of Food Safety Wageningen University and Research Centre, Wageningen, The Netherlands
| | - Mari Smits
- Wageningen Livestock Research, Wageningen University and Research Centre, Wageningen, The Netherlands
| | - Jurriaan J. Mes
- Food & Biobased Research, Wageningen University and Research Centre, Wageningen, The Netherlands
| | - Peter J. M. Hendriksen
- RIKILT-Institute of Food Safety Wageningen University and Research Centre, Wageningen, The Netherlands
- * E-mail:
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18
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Gęgotek A, Skrzydlewska E. The role of transcription factor Nrf2 in skin cells metabolism. Arch Dermatol Res 2015; 307:385-96. [PMID: 25708189 PMCID: PMC4469773 DOI: 10.1007/s00403-015-1554-2] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 02/06/2015] [Accepted: 02/12/2015] [Indexed: 12/22/2022]
Abstract
Skin, which is a protective layer of the body, is in constant contact with physical and chemical environmental factors. Exposure of the skin to highly adverse conditions often leads to oxidative stress. Moreover, it has been observed that skin cells are also exposed to reactive oxygen species generated during cell metabolism particularly in relation to the synthesis of melanin or the metabolism in immune system cells. However, skin cells have special features that protect them against oxidative modifications including transcription factor Nrf2, which is responsible for the transcription of the antioxidant protein genes such as antioxidant enzymes, small molecular antioxidant proteins or interleukins, and multidrug response protein. In the present study, the mechanisms of Nrf2 activation have been compared in the cells forming the various layers of the skin: keratinocytes, melanocytes, and fibroblasts. The primary mechanism of control of Nrf2 activity is its binding by cytoplasmic inhibitor Keap1, while cells have also other controlling mechanisms, such as phosphorylation of Nrf2 and modifications of its activators (e.g., Maf, IKKβ) or inhibitors (e.g., Bach1, caveolae, TGF-β). Moreover, there are a number of drugs (e.g., ketoconazole) used in the pharmacotherapy of skin diseases based on the activation of Nrf2, but they may also induce oxidative stress. Therefore, it is important to look for compounds that cause a selective activation of Nrf2 particularly natural substances such as curcumin, sulforaphane, or extracts from the broccoli leaves without side effects. These findings could be helpful in the searching for new drugs for people with vitiligo or even melanoma.
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Affiliation(s)
- Agnieszka Gęgotek
- Departments of Analytical Chemistry, Medical University of Bialystok, Mickiewicza 2D, 15-222, Bialystok, Poland,
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Yang JJ, Tao H, Hu W, Liu LP, Shi KH, Deng ZY, Li J. MicroRNA-200a controls Nrf2 activation by target Keap1 in hepatic stellate cell proliferation and fibrosis. Cell Signal 2014; 26:2381-9. [PMID: 25049078 DOI: 10.1016/j.cellsig.2014.07.016] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Accepted: 07/09/2014] [Indexed: 01/19/2023]
Abstract
Hepatic fibrosis is a common final pathological process in the progression of liver disease, which is primarily due to oxidative stress. Nrf2 is known to coordinate induction of genes that encode antioxidant enzymes. Moreover, Nrf2 expression is largely regulated through the association of Nrf2 with Keap1, which results in cytoplasmic Nrf2 degradation. Conversely, little is known concerning the regulation of Keap1 expression. Although the function of miRNA-200a controls Keap1 gene expression has been discussed in many cancers and fibrotic diseases, its role in hepatic fibrosis is still poorly understood. By using miRNA mimic, we observed miRNA-200a silencing in activated hepatic stellate cell and demonstrated that upon re-expression, miRNA-200a targets the Keap1, and leading to Keap1 mRNA degradation. We find that treatment with miRNA-200a mimics, restored miRNA-200a expression and reduced Keap1 levels. This reduction in Keap1 levels corresponded with Nrf2 nuclear translocation and activation of Nrf2-dependent NQO1 gene transcription. Moreover, we found that Nrf2 activation inhibited the TGF-β1-independent growth of hepatic stellate cell. Finally, our study demonstrates that miRNA-200a regulates the Keap1/Nrf2 pathway in hepatic stellate cell and fibrosis, and we find that epigenetic therapy can restore miRNA-200a regulation of Keap1 expression, therefore reactivating the Nrf2-dependent antioxidant pathway in liver fibrosis.
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Affiliation(s)
- Jing-Jing Yang
- Department of Pharmacology, The Second Hospital of Anhui Medical University, Hefei 230601, China
| | - Hui Tao
- Department of Cardiothoracic Surgery, The Second Hospital of Anhui Medical University, Hefei 230601, China
| | - Wei Hu
- Department of Pharmacology, The Second Hospital of Anhui Medical University, Hefei 230601, China
| | - Li-Ping Liu
- Department of Pharmacology, The Second Hospital of Anhui Medical University, Hefei 230601, China
| | - Kai-Hu Shi
- Department of Cardiothoracic Surgery, The Second Hospital of Anhui Medical University, Hefei 230601, China
| | - Zi-Yu Deng
- Department of Scientific and Educational, The Second Hospital of Anhui Medical University, China
| | - Jun Li
- School of Pharmacy, Anhui Medical University, Hefei 230032, China.
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