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Hong SH, Yu X, Zhu Y, Chen Y. Liver epigenomic signature associated with chronic oxidative stress in a mouse model of glutathione deficiency. Chem Biol Interact 2024; 398:111093. [PMID: 38830566 DOI: 10.1016/j.cbi.2024.111093] [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: 04/20/2024] [Revised: 05/17/2024] [Accepted: 05/31/2024] [Indexed: 06/05/2024]
Abstract
Oxidative stress is intimately involved in the pathogenesis of fatty liver disease (FLD). A major factor contributing to oxidative stress is the depletion of the ubiquitous antioxidant glutathione (GSH). Unexpectedly, chronic GSH deficiency renders glutamate-cysteine ligase modifier subunit (Gclm)-null mice protected from fatty liver injuries. Epigenetic regulation serves as an important cellular mechanism in modulating gene expression and disease outcome in FLD, although it is not well understood how systemic redox imbalance modifies the liver epigenome. In the current study, utilizing the Gclm-null mouse model, we aimed to elucidate redox-associated epigenomic changes and their implications in liver stress response. We performed high-throughput array-based DNA methylation profiling (MeDIP array) in 22,327 gene promoter regions (from -1300 bp to +500 bp of the Transcription Start Sites) in the liver and peripheral blood cells. Results from the MeDIP array demonstrate that, although global methylation enrichment in gene promoters did not change, low GSH resulted in prevalent demethylation at the individual promoter level. Such an effect likely attributed to a declined availability of the methyl donor S-adenosyl methionine (SAM) in Gclm-null liver. Functional enrichment analysis of liver target genes is suggestive of a potential role of epigenetic mechanisms in promoting cellular survival and lipid homeostasis in Gclm-null liver. In comparison with the liver tissue, MeDIP array in peripheral blood cells revealed a panel of 19 gene promoters that are candidate circulating biomarkers for hepatic epigenomic changes associated with chronic GSH deficiency. Collectively, our results provided new insights into the in vivo interplay between liver redox state and DNA methylation status. The current study laid the groundwork for future epigenetic/epigenomic investigations in experimental settings or human populations under conditions of liver oxidative stress induced by environmental or dietary challenges.
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Affiliation(s)
- Seong Hwi Hong
- Department of Environmental Health Sciences, Yale School of Public Health, Yale University, New Haven, CT, 06510, USA
| | - Xiaoqing Yu
- Department of Biostatistics, Yale School of Public Health, Yale University, New Haven, CT, 06510, USA
| | - Yong Zhu
- Department of Environmental Health Sciences, Yale School of Public Health, Yale University, New Haven, CT, 06510, USA
| | - Ying Chen
- Department of Environmental Health Sciences, Yale School of Public Health, Yale University, New Haven, CT, 06510, USA.
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2
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Zhang Q, Lang Y, Tang X, Cheng W, Cheng Z, Rizwan M, Xie L, Liu Y, Xu H, Liu Y. Polystyrene microplastic-induced endoplasmic reticulum stress contributes to growth plate endochondral ossification disorder in young rat. ENVIRONMENTAL TOXICOLOGY 2024; 39:3314-3329. [PMID: 38440912 DOI: 10.1002/tox.24182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 02/08/2024] [Accepted: 02/25/2024] [Indexed: 03/06/2024]
Abstract
BACKGROUND Previous studies on the effects of microplastics (MPs) on bone in early development are limited. This study aimed to investigate the adverse effects of MPs on bone in young rats and the potential mechanism. METHODS Three-week-old female rats were orally administered MPs for 28 days, and endoplasmic reticulum (ER) stress inhibitor salubrinal (SAL) and ER stress agonist tunicamycin (TM) were added to evaluate the effect of ER stress on toxicity of MPs. The indicators of growth and plasma markers of bone turnover were evaluated. Tibias were analyzed using micro-computed tomography (micro-CT). Histomorphological staining of growth plates was performed, and related gene expression of growth plate chondrocytes was tested. RESULTS After exposure of MPs, the rats had decreased growth, shortened tibial length, and altered blood calcium and phosphorus metabolism. Trabecular bone was sparse according to micro-CT inspection. In the growth plate, the thickness of proliferative zone substantial reduced while the thickness of hypertrophic zone increased significantly, and the chondrocytes were scarce and irregularly arranged according to tibial histological staining. The transcription of the ER stress-related genes BIP, PERK, ATF4, and CHOP dramatically increased, and the transcription factors involved in chondrocyte proliferation, differentiation, apoptosis, and matrix secretion were aberrant according to RT-qPCR and western blotting. Moreover, the addition of TM showed higher percentage of chondrocyte death. Administration of SAL alleviated all of the MPs-induced symptoms. CONCLUSION These results indicated that MPs could induce growth retardation and longitudinal bone damage in early development. The toxicity of MPs may attribute to induced ER stress and impaired essential processes of the endochondral ossification after MPs exposure.
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Affiliation(s)
- Qingqing Zhang
- Department of Pediatrics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Yuanyuan Lang
- Medical Imaging Center, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Xiaomin Tang
- Department of Pediatrics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Wenshu Cheng
- Department of Pediatrics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Zugen Cheng
- Department of Pediatrics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Mohammad Rizwan
- Department of Pediatrics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Lixin Xie
- Department of Pediatrics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Yanling Liu
- Department of Pediatrics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Hengyi Xu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Yang Liu
- Department of Pediatrics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
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Verkerke ARP, Wang D, Yoshida N, Taxin ZH, Shi X, Zheng S, Li Y, Auger C, Oikawa S, Yook JS, Granath-Panelo M, He W, Zhang GF, Matsushita M, Saito M, Gerszten RE, Mills EL, Banks AS, Ishihama Y, White PJ, McGarrah RW, Yoneshiro T, Kajimura S. BCAA-nitrogen flux in brown fat controls metabolic health independent of thermogenesis. Cell 2024; 187:2359-2374.e18. [PMID: 38653240 PMCID: PMC11145561 DOI: 10.1016/j.cell.2024.03.030] [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: 07/24/2023] [Revised: 01/07/2024] [Accepted: 03/21/2024] [Indexed: 04/25/2024]
Abstract
Brown adipose tissue (BAT) is best known for thermogenesis. Rodent studies demonstrated that enhanced BAT thermogenesis is tightly associated with increased energy expenditure, reduced body weight, and improved glucose homeostasis. However, human BAT is protective against type 2 diabetes, independent of body weight. The mechanism underlying this dissociation remains unclear. Here, we report that impaired mitochondrial catabolism of branched-chain amino acids (BCAAs) in BAT, by deleting mitochondrial BCAA carriers (MBCs), caused systemic insulin resistance without affecting energy expenditure and body weight. Brown adipocytes catabolized BCAA in the mitochondria as nitrogen donors for the biosynthesis of non-essential amino acids and glutathione. Impaired mitochondrial BCAA-nitrogen flux in BAT resulted in increased oxidative stress, decreased hepatic insulin signaling, and decreased circulating BCAA-derived metabolites. A high-fat diet attenuated BCAA-nitrogen flux and metabolite synthesis in BAT, whereas cold-activated BAT enhanced the synthesis. This work uncovers a metabolite-mediated pathway through which BAT controls metabolic health beyond thermogenesis.
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Affiliation(s)
- Anthony R P Verkerke
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, and Howard Hughes Medical Institute, Boston, MA, USA
| | - Dandan Wang
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, and Howard Hughes Medical Institute, Boston, MA, USA
| | - Naofumi Yoshida
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, and Howard Hughes Medical Institute, Boston, MA, USA
| | - Zachary H Taxin
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, and Howard Hughes Medical Institute, Boston, MA, USA
| | - Xu Shi
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - Shuning Zheng
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - Yuka Li
- Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Christopher Auger
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, and Howard Hughes Medical Institute, Boston, MA, USA
| | - Satoshi Oikawa
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, and Howard Hughes Medical Institute, Boston, MA, USA
| | - Jin-Seon Yook
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, and Howard Hughes Medical Institute, Boston, MA, USA
| | - Melia Granath-Panelo
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, and Howard Hughes Medical Institute, Boston, MA, USA
| | - Wentao He
- Duke Molecular Physiology Institute, Duke School of Medicine, Department of Medicine, Division of Endocrinology, Metabolism and Nutrition, Duke University, Durham, NC, USA
| | - Guo-Fang Zhang
- Duke Molecular Physiology Institute, Duke School of Medicine, Department of Medicine, Division of Endocrinology, Metabolism and Nutrition, Duke University, Durham, NC, USA
| | - Mami Matsushita
- Department of Nutrition, School of Nursing and Nutrition, Tenshi College, Sapporo, Japan
| | - Masayuki Saito
- Laboratory of Biochemistry, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Robert E Gerszten
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - Evanna L Mills
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute and Department of Immunology, Harvard Medical School, Boston, MA, USA
| | - Alexander S Banks
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - Yasushi Ishihama
- Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Phillip J White
- Duke Molecular Physiology Institute, Duke School of Medicine, Department of Medicine, Division of Endocrinology, Metabolism and Nutrition, Department of Pharmacology and Cancer Biology, Duke University, Durham, NC, USA
| | - Robert W McGarrah
- Duke Molecular Physiology Institute, Duke School of Medicine, Sarah W. Stedman Nutrition and Metabolism Center, Department of Medicine, Division of Cardiology, Duke University, Durham, NC, USA
| | - Takeshi Yoneshiro
- Division of Metabolic Medicine, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan; Division of Molecular Physiology and Metabolism, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Shingo Kajimura
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, and Howard Hughes Medical Institute, Boston, MA, USA.
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Lin N, Erdos T, Louie C, Desai R, Lin N, Ayzenberg G, Venketaraman V. The Role of Glutathione in the Management of Cell-Mediated Immune Responses in Individuals with HIV. Int J Mol Sci 2024; 25:2952. [PMID: 38474196 DOI: 10.3390/ijms25052952] [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: 01/15/2024] [Revised: 02/25/2024] [Accepted: 02/28/2024] [Indexed: 03/14/2024] Open
Abstract
Human immunodeficiency virus (HIV) is a major cause of death worldwide. Without appropriate antiretroviral therapy, the infection can develop into acquired immunodeficiency syndrome (AIDS). AIDS leads to the dysregulation of cell-mediated immunity resulting in increased susceptibility to opportunistic infections and excessive amounts of inflammatory cytokines. HIV-positive individuals also demonstrate diminished glutathione (GSH) levels which allows for increased viral replication and increased pro-inflammatory cytokine release, further contributing to the high rates of mortality seen in patients with HIV. Adequate GSH supplementation has reduced inflammation and slowed the decline of CD4+ T cell counts in HIV-positive individuals. We aim to review the current literature regarding the role of GSH in cell-mediated immune responses in individuals with HIV- and AIDS-defining illnesses.
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Affiliation(s)
- Nicole Lin
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Thomas Erdos
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Carson Louie
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Raina Desai
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Naomi Lin
- Creighton University School of Medicine, Creighton University, Omaha, NE 68178, USA
| | - Gregory Ayzenberg
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Vishwanath Venketaraman
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
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Rodríguez-Negrete EV, Morales-González Á, Madrigal-Santillán EO, Sánchez-Reyes K, Álvarez-González I, Madrigal-Bujaidar E, Valadez-Vega C, Chamorro-Cevallos G, Garcia-Melo LF, Morales-González JA. Phytochemicals and Their Usefulness in the Maintenance of Health. PLANTS (BASEL, SWITZERLAND) 2024; 13:523. [PMID: 38498532 PMCID: PMC10892216 DOI: 10.3390/plants13040523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 02/05/2024] [Accepted: 02/13/2024] [Indexed: 03/20/2024]
Abstract
Inflammation is the immune system's first biological response to infection, injury, or irritation. Evidence suggests that the anti-inflammatory effect is mediated by the regulation of various inflammatory cytokines, such as nitric oxide, interleukins, tumor necrosis factor alpha-α, interferon gamma-γ, as well as the non-cytokine mediator, prostaglandin E2. Currently, the mechanism of action and clinical usefulness of phytochemicals is known; their action on the activity of cytokines, free radicals, and oxidative stress. The latter are of great relevance in the development of diseases, such that the evidence collected demonstrates the beneficial effects of phytochemicals in maintaining health. Epidemiological evidence indicates that regular consumption of fruits and vegetables is related to a low risk of developing cancer and other chronic diseases.
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Affiliation(s)
- Elda Victoria Rodríguez-Negrete
- Servicio de Gastroenterología, Hospital de Especialidades, Centro Médico Nacional Siglo XXI, Mexico City 06720, Mexico;
- Laboratorio de Medicina de Conservación, Escuela Superior de Medicina, Instituto Politécnico Nacional, Mexico City C.P. 11340, Mexico;
| | - Ángel Morales-González
- Escuela Superior de Cómputo, Instituto Politécnico Nacional, Unidad Profesional ”A. López Mateos”, Ciudad de México 07738, Mexico
| | - Eduardo Osiris Madrigal-Santillán
- Laboratorio de Medicina de Conservación, Escuela Superior de Medicina, Instituto Politécnico Nacional, Mexico City C.P. 11340, Mexico;
| | - Karina Sánchez-Reyes
- Servicio de Cirugía General, Hospital de Especialidades, Centro Médico Nacional Siglo XXI, Mexico City 06720, Mexico;
| | - Isela Álvarez-González
- Laboratorio de Genética, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu s/n, Zacatenco, Gustavo A. Madero, Mexico City 07738, Mexico; (I.Á.-G.); (E.M.-B.)
| | - Eduardo Madrigal-Bujaidar
- Laboratorio de Genética, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu s/n, Zacatenco, Gustavo A. Madero, Mexico City 07738, Mexico; (I.Á.-G.); (E.M.-B.)
| | - Carmen Valadez-Vega
- Área Académica de Medicina, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla, San Agustín Tlaxiaca 42080, Mexico;
| | - German Chamorro-Cevallos
- Laboratorio de Toxicología Preclínica, Departamento de Farmacia, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City C.P. 07738, Mexico;
| | - Luis Fernando Garcia-Melo
- Laboratorio de Nanotecnología e Ingeniería Molecular, Área Electroquímica, Departamento de Química, CBI, Universidad Autónoma Metropolitana-Iztapalapa, Mexico City 09340, Mexico;
| | - José A. Morales-González
- Laboratorio de Medicina de Conservación, Escuela Superior de Medicina, Instituto Politécnico Nacional, Mexico City C.P. 11340, Mexico;
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Zhou J, Li M, Yu Z, Li C, Zhou L, Zhou X. Protective effect of Qingluotongbi formula against Tripterygium wilfordii induced liver injury in mice by improving fatty acid β-oxidation and mitochondrial biosynthesis. PHARMACEUTICAL BIOLOGY 2023; 61:80-88. [PMID: 36541729 PMCID: PMC9788700 DOI: 10.1080/13880209.2022.2157842] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 10/21/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
CONTEXT Qingluotongbi formula (QLT) is a Chinese medicine compound consisting of Tripterygium wilfordii Hook. f. (Celastraceae, TW), Panax notoginseng (Burkill) F.H.Chen (Araliaceae, PN), Rehmannia glutinosa (Gaertn.) DC. (Orobanchaceae, RG), Sinomenium acutum (Thunb.) Rehder & E.H. Wilson (Menispermaceae, SA), and Bombyx mori L. (Bombycidae, BM). OBJECTIVE This study investigated the protective effect and possible mechanism of QLT against TW-induced liver injury in mice. MATERIALS AND METHODS To establish the model of TW-induced liver injury in mice, C57BL/6J mice were randomly divided into 4 groups: control group, low-dose TW group, middle-dose TW group, and high-dose TW group. To observe the effects of QLT and its individual ingredients against TW-induced liver injury, C57BL/6J mice were randomly divided into 7 groups: control group, TW group, QLT group, PN group, RG group, SA group, BM group.After administration for 7 days, C57BL/6J mice were tested for biochemical indicators and liver pathological changes. Then, we evaluated the mitochondrial function and analysed the gene and protein expression related to the peroxisome proliferator-activated receptor alpha (PPARα)/peroxisome proliferator-activated receptor gamma coactivator-1 alpha (PGC-1α) pathway by quantitative real-time PCR (qRT-PCR) and Western blotting. RESULTS Compared with the control group (0.30 ± 0.35), TW significantly increased mice liver histological score (L, 0.95 ± 1.14; M, 1.25 ± 1.16; H, 4.00 ± 1.13). QLT and its ingredients significantly improved the pathology scores (CON, 0.63 ± 0.74; TW, 4.19 ± 1.53; QLT, 1.56 ± 0.62; PN, 1.94 ± 0.68; RG, 2.75 ± 1.39; SA, 4.13 ± 0.99; BM, 4.13 ± 0.99). Western blot and qRT-PCR analysis revealed that QLT and its ingredients reversed TW-induced suppression of PPARα/PGC1-α pathway.Discussion and conclusions: These findings provide valuable information for compound compatibility studies and TW clinical applications.
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Affiliation(s)
- Jie Zhou
- The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, China
| | - Ming Li
- The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
| | - Zhichao Yu
- The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, China
| | - Changqing Li
- The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, China
| | - Lingling Zhou
- Jiangsu Provincial Key Laboratory of Pharmacology and Safety Evaluation of Material Medical, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xueping Zhou
- The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, China
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Tabei Y, Abe H, Suzuki S, Takeda N, Arai JI, Nakajima Y. Sedanolide Activates KEAP1-NRF2 Pathway and Ameliorates Hydrogen Peroxide-Induced Apoptotic Cell Death. Int J Mol Sci 2023; 24:16532. [PMID: 38003720 PMCID: PMC10671709 DOI: 10.3390/ijms242216532] [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: 10/19/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 11/26/2023] Open
Abstract
Sedanolide is a bioactive compound with anti-inflammatory and antitumor activities. Although it has been recently suggested that sedanolide activates the nuclear factor E2-related factor 2 (NRF2) pathway, there is little research on its effects on cellular resistance to oxidative stress. The objective of the present study was to investigate the function of sedanolide in suppressing hydrogen peroxide (H2O2)-induced oxidative damage and the underlying molecular mechanisms in human hepatoblastoma cell line HepG2 cells. We found that sedanolide activated the antioxidant response element (ARE)-dependent transcription mediated by the nuclear translocation of NRF2. Pathway enrichment analysis of RNA sequencing data revealed that sedanolide upregulated the transcription of antioxidant enzymes involved in the NRF2 pathway and glutathione metabolism. Then, we further investigated whether sedanolide exerts cytoprotective effects against H2O2-induced cell death. We showed that sedanolide significantly attenuated cytosolic and mitochondrial reactive oxygen species (ROS) generation induced by exposure to H2O2. Furthermore, we demonstrated that pretreatment with sedanolide conferred a significant cytoprotective effect against H2O2-induced cell death probably due to preventing the decrease in the mitochondrial membrane potential and the increase in caspase-3/7 activity. Our study demonstrated that sedanolide enhanced cellular resistance to oxidative damage via the activation of the Kelch-like ECH-associated protein 1 (KEAP1)-NRF2 pathway.
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Affiliation(s)
- Yosuke Tabei
- Health and Medical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 2217-14 Hayashi-cho, Takamatsu 761-0395, Kagawa, Japan; (Y.T.); (H.A.); (S.S.)
| | - Hiroko Abe
- Health and Medical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 2217-14 Hayashi-cho, Takamatsu 761-0395, Kagawa, Japan; (Y.T.); (H.A.); (S.S.)
| | - Shingo Suzuki
- Health and Medical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 2217-14 Hayashi-cho, Takamatsu 761-0395, Kagawa, Japan; (Y.T.); (H.A.); (S.S.)
- Department of Anatomy and Neurobiology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho 761-0793, Kagawa, Japan
| | - Nobuaki Takeda
- Technology and Innovation Center, Daikin Industries, Ltd., 1-1 Nishi-Hitotsuya, Settsu 566-8585, Osaka, Japan; (N.T.); (J.-i.A.)
| | - Jun-ichiro Arai
- Technology and Innovation Center, Daikin Industries, Ltd., 1-1 Nishi-Hitotsuya, Settsu 566-8585, Osaka, Japan; (N.T.); (J.-i.A.)
| | - Yoshihiro Nakajima
- Health and Medical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 2217-14 Hayashi-cho, Takamatsu 761-0395, Kagawa, Japan; (Y.T.); (H.A.); (S.S.)
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8
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Chen L, Zhou M, Li H, Liu D, Liao P, Zong Y, Zhang C, Zou W, Gao J. Mitochondrial heterogeneity in diseases. Signal Transduct Target Ther 2023; 8:311. [PMID: 37607925 PMCID: PMC10444818 DOI: 10.1038/s41392-023-01546-w] [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: 08/22/2022] [Revised: 02/21/2023] [Accepted: 06/13/2023] [Indexed: 08/24/2023] Open
Abstract
As key organelles involved in cellular metabolism, mitochondria frequently undergo adaptive changes in morphology, components and functions in response to various environmental stresses and cellular demands. Previous studies of mitochondria research have gradually evolved, from focusing on morphological change analysis to systematic multiomics, thereby revealing the mitochondrial variation between cells or within the mitochondrial population within a single cell. The phenomenon of mitochondrial variation features is defined as mitochondrial heterogeneity. Moreover, mitochondrial heterogeneity has been reported to influence a variety of physiological processes, including tissue homeostasis, tissue repair, immunoregulation, and tumor progression. Here, we comprehensively review the mitochondrial heterogeneity in different tissues under pathological states, involving variant features of mitochondrial DNA, RNA, protein and lipid components. Then, the mechanisms that contribute to mitochondrial heterogeneity are also summarized, such as the mutation of the mitochondrial genome and the import of mitochondrial proteins that result in the heterogeneity of mitochondrial DNA and protein components. Additionally, multiple perspectives are investigated to better comprehend the mysteries of mitochondrial heterogeneity between cells. Finally, we summarize the prospective mitochondrial heterogeneity-targeting therapies in terms of alleviating mitochondrial oxidative damage, reducing mitochondrial carbon stress and enhancing mitochondrial biogenesis to relieve various pathological conditions. The possibility of recent technological advances in targeted mitochondrial gene editing is also discussed.
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Affiliation(s)
- Long Chen
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Sciences, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Mengnan Zhou
- Department of Pathogenic Biology, School of Basic Medical Science, China Medical University, Shenyang, 110001, China
| | - Hao Li
- Department of Orthopaedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Delin Liu
- Department of Orthopaedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Peng Liao
- Department of Orthopaedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Yao Zong
- Centre for Orthopaedic Research, Medical School, The University of Western Australia, Nedlands, WA, 6009, Australia
| | - Changqing Zhang
- Department of Orthopaedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China.
| | - Weiguo Zou
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Sciences, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China.
- Institute of Microsurgery on Extremities, and Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China.
| | - Junjie Gao
- Department of Orthopaedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China.
- Institute of Microsurgery on Extremities, and Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China.
- Shanghai Sixth People's Hospital Fujian, No. 16, Luoshan Section, Jinguang Road, Luoshan Street, Jinjiang City, Quanzhou, Fujian, China.
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Bejarano E, Weinberg J, Clark M, Taylor A, Rowan S, Whitcomb EA. Redox Regulation in Age-Related Cataracts: Roles for Glutathione, Vitamin C, and the NRF2 Signaling Pathway. Nutrients 2023; 15:3375. [PMID: 37571310 PMCID: PMC10421530 DOI: 10.3390/nu15153375] [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: 06/29/2023] [Revised: 07/19/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
Age is the biggest risk factor for cataracts, and aberrant oxidative modifications are correlated with age-related cataracts, suggesting that proper redox regulation is important for lens clarity. The lens has very high levels of antioxidants, including ascorbate and glutathione that aid in keeping the lens clear, at least in young animals and humans. We summarize current functional and genetic data supporting the hypothesis that impaired regulation of oxidative stress leads to redox dysregulation and cataract. We will focus on the essential endogenous antioxidant glutathione and the exogenous antioxidant vitamin C/ascorbate. Additionally, gene expression in response to oxidative stress is regulated in part by the transcription factor NRF2 (nuclear factor erythroid 2-related factor 2 [NFE2L2]), thus we will summarize our data regarding cataracts in Nrf2-/- mice. In this work, we discuss the function and integration of these capacities with the objective of maintaining lens clarity.
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Affiliation(s)
- Eloy Bejarano
- JM-USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA 02111, USA; (E.B.); (J.W.); (M.C.); (A.T.); (S.R.)
- School of Health Sciences and Veterinary, Universidad CEU Cardenal Herrera, CEU Universities, 46113 Valencia, Spain
| | - Jasper Weinberg
- JM-USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA 02111, USA; (E.B.); (J.W.); (M.C.); (A.T.); (S.R.)
| | - Madison Clark
- JM-USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA 02111, USA; (E.B.); (J.W.); (M.C.); (A.T.); (S.R.)
| | - Allen Taylor
- JM-USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA 02111, USA; (E.B.); (J.W.); (M.C.); (A.T.); (S.R.)
- Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA 02111, USA
- Department of Ophthalmology, School of Medicine, Tufts University, Boston, MA 02111, USA
- Department of Developmental, Chemical and Molecular Biology, Tufts University, Boston, MA 02111, USA
| | - Sheldon Rowan
- JM-USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA 02111, USA; (E.B.); (J.W.); (M.C.); (A.T.); (S.R.)
- Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA 02111, USA
- Department of Ophthalmology, School of Medicine, Tufts University, Boston, MA 02111, USA
| | - Elizabeth A. Whitcomb
- JM-USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA 02111, USA; (E.B.); (J.W.); (M.C.); (A.T.); (S.R.)
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10
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Davidson EA, Chen Y, Singh S, Orlicky DJ, Thompson B, Wang Y, Charkoftaki G, Furnary TA, Cardone RL, Kibbey RG, Shearn CT, Nebert DW, Thompson DC, Vasiliou V. Endocrine pancreas-specific Gclc gene deletion causes a severe diabetes phenotype. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.13.544855. [PMID: 37398356 PMCID: PMC10312708 DOI: 10.1101/2023.06.13.544855] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
Reduced glutathione (GSH) is an abundant antioxidant that regulates intracellular redox homeostasis by scavenging reactive oxygen species (ROS). Glutamate-cysteine ligase catalytic (GCLC) subunit is the rate-limiting step in GSH biosynthesis. Using the Pax6-Cre driver mouse line, we deleted expression of the Gclc gene in all pancreatic endocrine progenitor cells. Intriguingly, Gclc knockout (KO) mice, following weaning, exhibited an age-related, progressive diabetes phenotype, manifested as strikingly increased blood glucose and decreased plasma insulin levels. This severe diabetes trait is preceded by pathologic changes in islet of weanling mice. Gclc KO weanlings showed progressive abnormalities in pancreatic morphology including: islet-specific cellular vacuolization, decreased islet-cell mass, and alterations in islet hormone expression. Islets from newly-weaned mice displayed impaired glucose-stimulated insulin secretion, decreased insulin hormone gene expression, oxidative stress, and increased markers of cellular senescence. Our results suggest that GSH biosynthesis is essential for normal development of the mouse pancreatic islet, and that protection from oxidative stress-induced cellular senescence might prevent abnormal islet-cell damage during embryogenesis.
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11
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Fujii J, Osaki T, Soma Y, Matsuda Y. Critical Roles of the Cysteine-Glutathione Axis in the Production of γ-Glutamyl Peptides in the Nervous System. Int J Mol Sci 2023; 24:ijms24098044. [PMID: 37175751 PMCID: PMC10179188 DOI: 10.3390/ijms24098044] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 04/24/2023] [Accepted: 04/26/2023] [Indexed: 05/15/2023] Open
Abstract
γ-Glutamyl moiety that is attached to the cysteine (Cys) residue in glutathione (GSH) protects it from peptidase-mediated degradation. The sulfhydryl group of the Cys residue represents most of the functions of GSH, which include electron donation to peroxidases, protection of reactive sulfhydryl in proteins via glutaredoxin, and glutathione conjugation of xenobiotics, whereas Cys-derived sulfur is also a pivotal component of some redox-responsive molecules. The amount of Cys that is available tends to restrict the capacity of GSH synthesis. In in vitro systems, cystine is the major form in the extracellular milieu, and a specific cystine transporter, xCT, is essential for survival in most lines of cells and in many primary cultivated cells as well. A reduction in the supply of Cys causes GPX4 to be inhibited due to insufficient GSH synthesis, which leads to iron-dependent necrotic cell death, ferroptosis. Cells generally cannot take up GSH without the removal of γ-glutamyl moiety by γ-glutamyl transferase (GGT) on the cell surface. Meanwhile, the Cys-GSH axis is essentially common to certain types of cells; primarily, neuronal cells that contain a unique metabolic system for intercellular communication concerning γ-glutamyl peptides. After a general description of metabolic processes concerning the Cys-GSH axis, we provide an overview and discuss the significance of GSH-related compounds in the nervous system.
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Affiliation(s)
- Junichi Fujii
- Department of Biochemistry and Molecular Biology, Graduate School of Medical Science, Yamagata University, Yamagata 990-9585, Japan
| | - Tsukasa Osaki
- Department of Biochemistry and Molecular Biology, Graduate School of Medical Science, Yamagata University, Yamagata 990-9585, Japan
| | - Yuya Soma
- Graduate School of Nursing, Yamagata University Faculty of Medicine, Yamagata 990-9585, Japan
| | - Yumi Matsuda
- Graduate School of Nursing, Yamagata University Faculty of Medicine, Yamagata 990-9585, Japan
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12
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Rajak S, Tewari A, Raza S, Gupta P, Chakravarti B, Anjum B, Tripathi M, Singh BK, Yen PM, Goel A, Ghosh S, Sinha RA. Pharmacological inhibition of CFTR attenuates nonalcoholic steatohepatitis (NASH) progression in mice. Biochim Biophys Acta Mol Basis Dis 2023; 1869:166662. [PMID: 36754244 DOI: 10.1016/j.bbadis.2023.166662] [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: 01/01/2023] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 02/08/2023]
Abstract
Nonalcoholic steatohepatitis (NASH) is considered a pivotal stage in nonalcoholic fatty liver disease (NAFLD) progression and increases the risk of end-stage liver diseases such as fibrosis, cirrhosis, and hepatocellular carcinoma (HCC). The etiology of NASH is multifactorial and identifying reliable molecular players has proven difficult. Presently, there are no approved drugs for NASH treatment, which has become a leading cause of liver transplants worldwide. Here, using public human transcriptomic NAFLD dataset, we uncover Cystic fibrosis transmembrane conductance receptor (CFTR) as a differentially expressed gene in the livers of human NASH patients. Similarly, murine Cftr expression was also found to be upregulated in two mouse models of diet-induced NASH. Furthermore, the pharmacological inhibition of CFTR significantly reduced NASH progression in mice and its overexpression aggravated lipotoxicity in human hepatic cells. These results, thus, underscore the involvement of murine Cftr in the pathogenesis of NASH and raise the intriguing possibility of its pharmacological inhibition in human NASH.
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Affiliation(s)
- Sangam Rajak
- Department of Endocrinology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
| | - Archana Tewari
- Department of Endocrinology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
| | - Sana Raza
- Department of Endocrinology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
| | - Pratima Gupta
- Department of Endocrinology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
| | - Bandana Chakravarti
- Department of Endocrinology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
| | - Baby Anjum
- Department of Endocrinology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
| | - Madhulika Tripathi
- Cardiovascular and Metabolic Disorders Program, Duke-NUS Medical School, Singapore, Singapore
| | - Brijesh K Singh
- Cardiovascular and Metabolic Disorders Program, Duke-NUS Medical School, Singapore, Singapore
| | - Paul M Yen
- Cardiovascular and Metabolic Disorders Program, Duke-NUS Medical School, Singapore, Singapore; Duke Molecular Physiology Institute and Dept of Medicine, Duke University School of Medicine, Durham, NC, USA
| | - Amit Goel
- Department of Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
| | - Sujoy Ghosh
- Cardiovascular and Metabolic Disorders Program, Duke-NUS Medical School, Singapore, Singapore
| | - Rohit A Sinha
- Department of Endocrinology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India.
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13
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Li X, He F, Hu S, Sun N, Huo C, Liu R. The culprits of superoxide dismutase inactivation under size-dependent stress of ultrafine carbon black: Superoxide anion, genotoxicity and protein corona. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 862:160770. [PMID: 36502967 DOI: 10.1016/j.scitotenv.2022.160770] [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: 10/19/2022] [Revised: 11/28/2022] [Accepted: 12/04/2022] [Indexed: 06/17/2023]
Abstract
As a critical component of atmospheric ultrafine particulates, ultrafine carbon black (UFCB) brings great exposure risk to organisms. At present, the action pathway and activity regulation mechanism of UFCB on functional proteins in vivo are not clear, and the size-dependent effects of UFCB during this process need to be elucidated. Superoxide dismutase (SOD), one of the most applied biomarkers to assess the environmental impact of pollutants, plays crucial roles in resistance to oxidative stress. Here, based on the inactivation of SOD (84.79 %, 86.81 % and 91.70 %) in primary mouse hepatocytes exposed to UFCB (13 nm, 50 nm and 95 nm), oxidative stress, genotoxicity and protein molecular studies were employed to elucidate the inactivation mechanisms. Results showed that inhibition of UFCB-mediated superoxide anion (O2-) contributed to a decrease in SOD activity. Furthermore, the significant increase in 8-hydroxy-2-deoxyguanosine content and the comet tail formation indicated the occurrence of DNA damage, supporting that concomitant aberrant transcriptional and protein translational under gene regulation should be responsible for SOD inactivation. At the molecular level, the constricted backbone, reduced content of α-helix and fluorescence sensitization all demonstrated that the attachment-type binding of SOD on UFCB to form the 'protein corona' disrupted protein structure. Enzyme activity assays indicated that SOD backbone tightening and helix decay resulted in decreased activity, which should be another reason for intracellular SOD inactivation. More importantly, the particle sizes of UFCB exert powerful influences on SOD inactivation mechanisms. Smaller UFCB (13 nm) induced more severe O2- inhibition and DNA damage, while UFCB50nm with the best dispersity bound more SOD and induced stronger molecular toxicity, which are their different strengths in stressing SOD inactivation in hepatocytes. Our findings provide novel insights for exploring functional proteins activity and underscore a potentially size-dependent risk of nanoparticles.
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Affiliation(s)
- Xiangxiang Li
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Falin He
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Shaoyang Hu
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Ning Sun
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Chenqian Huo
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Rutao Liu
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China.
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14
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Asantewaa G, Tuttle ET, Ward NP, Kang YP, Kim Y, Kavanagh ME, Girnius N, Chen Y, Duncan R, Rodriguez K, Hecht F, Zocchi M, Smorodintsev-Schiller L, Scales TQ, Taylor K, Alimohammadi F, Sechrist ZR, Agostini-Vulaj D, Schafer XL, Chang H, Smith Z, O'Connor TN, Whelan S, Selfors LM, Crowdis J, Gray GK, Bronson RT, Brenner D, Rufini A, Dirksen RT, Hezel AF, Huber AR, Munger J, Cravatt BF, Vasiliou V, Cole CL, DeNicola GM, Harris IS. Glutathione supports lipid abundance in vivo. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.10.524960. [PMID: 36798186 PMCID: PMC9934595 DOI: 10.1101/2023.02.10.524960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Cells rely on antioxidants to survive. The most abundant antioxidant is glutathione (GSH). The synthesis of GSH is non-redundantly controlled by the glutamate-cysteine ligase catalytic subunit (GCLC). GSH imbalance is implicated in many diseases, but the requirement for GSH in adult tissues is unclear. To interrogate this, we developed a series of in vivo models to induce Gclc deletion in adult animals. We find that GSH is essential to lipid abundance in vivo. GSH levels are reported to be highest in liver tissue, which is also a hub for lipid production. While the loss of GSH did not cause liver failure, it decreased lipogenic enzyme expression, circulating triglyceride levels, and fat stores. Mechanistically, we found that GSH promotes lipid abundance by repressing NRF2, a transcription factor induced by oxidative stress. These studies identify GSH as a fulcrum in the liver's balance of redox buffering and triglyceride production.
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Affiliation(s)
- Gloria Asantewaa
- Department of Biochemistry and Biophysics, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA, 14642
| | - Emily T Tuttle
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA, 14642
| | - Nathan P Ward
- Department of Metabolism and Physiology, Moffitt Cancer Center and Research Institute, Tampa, FL, USA, 33612
| | - Yun Pyo Kang
- Department of Metabolism and Physiology, Moffitt Cancer Center and Research Institute, Tampa, FL, USA, 33612
| | - Yumi Kim
- Department of Metabolism and Physiology, Moffitt Cancer Center and Research Institute, Tampa, FL, USA, 33612
| | - Madeline E Kavanagh
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA, USA, 92037
| | - Nomeda Girnius
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA, 02115
| | - Ying Chen
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, CT, USA, 06520
| | - Renae Duncan
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA, 14642
| | - Katherine Rodriguez
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA, 14642
| | - Fabio Hecht
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA, 14642
| | - Marco Zocchi
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA, 14642
| | - Leonid Smorodintsev-Schiller
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA, 14642
| | - TashJaé Q Scales
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA, 14642
| | - Kira Taylor
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA, 14642
| | - Fatemeh Alimohammadi
- Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Department of Pharmacology and Physiology, University of Rochester, Rochester, NY, USA, 14642
| | - Zachary R Sechrist
- Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Department of Surgery and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Department of Pathology and Laboratory Medicine, University of Rochester Medical Center, Rochester, NY, USA, 14642
| | - Diana Agostini-Vulaj
- Department of Surgery and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA, 14642
| | - Xenia L Schafer
- Department of Biochemistry and Biophysics, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA, 14642
| | - Hayley Chang
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA, 14642
| | - Zachary Smith
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA, 14642
| | - Thomas N O'Connor
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Department of Surgery and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA, 14642
| | - Sarah Whelan
- Leicester Cancer Research Centre, University of Leicester, Leicester, LE2 7LX, UK
| | - Laura M Selfors
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA, 02115
| | - Jett Crowdis
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA, 02115
| | - G Kenneth Gray
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA, 02115
| | - Roderick T Bronson
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA, 02115
| | - Dirk Brenner
- Experimental & Molecular Immunology, Department of Infection and Immunity, Luxembourg Institute of Health, 29 Rue Henri Koch, Esch-sur-Alzette, Luxembourg
- Odense Research Center for Anaphylaxis (ORCA), Department of Dermatology and Allergy Center, Odense University Hospital, University of Southern Denmark, Odense, Denmark
| | - Alessandro Rufini
- Leicester Cancer Research Centre, University of Leicester, Leicester, LE2 7LX, UK
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133, Milan, Italy
| | - Robert T Dirksen
- Department of Pharmacology and Physiology, University of Rochester, Rochester, NY, USA, 14642
| | - Aram F Hezel
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA, 14642
| | - Aaron R Huber
- Department of Pathology and Laboratory Medicine, University of Rochester Medical Center, Rochester, NY, USA, 14642
| | - Josh Munger
- Department of Biochemistry and Biophysics, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA, 14642
| | - Benjamin F Cravatt
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA, USA, 92037
| | - Vasilis Vasiliou
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, CT, USA, 06520
| | - Calvin L Cole
- Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Department of Surgery and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA, 14642
| | - Gina M DeNicola
- Department of Metabolism and Physiology, Moffitt Cancer Center and Research Institute, Tampa, FL, USA, 33612
| | - Isaac S Harris
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY, USA, 14642
- Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA, 14642
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15
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Glutathione Protects against Paraquat-Induced Oxidative Stress by Regulating Intestinal Barrier, Antioxidant Capacity, and CAR Signaling Pathway in Weaned Piglets. Nutrients 2022; 15:nu15010198. [PMID: 36615853 PMCID: PMC9823711 DOI: 10.3390/nu15010198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/29/2022] [Accepted: 12/29/2022] [Indexed: 01/04/2023] Open
Abstract
Endogenous glutathione (GSH) effectively regulates redox homeostasis in the body. This study aimed to investigate the regulatory mechanism of different dietary levels of GSH supplementation on the intestinal barrier and antioxidant function in a paraquat-induced stress-weaned piglet model. Our results showed that dietary 0.06% GSH supplementation improved the growth performance of weaned piglets under normal and stressful conditions to some degree and decreased the diarrhea rate throughout. Exogenous GSH improved paraquat-induced changes in intestinal morphology, organelle, and permeability and reduced intestinal epithelial cell apoptosis. Moreover, GSH treatment alleviated intestinal oxidative stress damage by upregulating antioxidant (GPX4, CnZnSOD, GCLC, and GCLM) and anti-inflammatory (IL-10) gene expression and downregulating inflammatory cytokines (IFN-γ and IL-12) gene expression. Furthermore, GSH significantly reduced the expression levels of constitutive androstane receptor (CAR), RXRα, HSP90, PP2Ac, CYP2B22, and CYP3A29, and increased the expression levels of GSTA1 and GSTA2 in the jejunum and ileum of paraquat-induced piglets. We conclude that exogenous GSH protects against oxidative stress damage by regulating the intestinal barrier, antioxidant capacity, and CAR signaling pathway.
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16
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Saedi S, Panahi R, Orak N, Jafarzadeh Shirazi MR. Comparative Meta-analysis of Adipose Tissue Transcriptomics Data in PCOS Patients and Healthy Control Women. Reprod Sci 2022; 30:1823-1833. [DOI: 10.1007/s43032-022-01145-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 12/05/2022] [Indexed: 12/14/2022]
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17
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Study of the Association between Thiols and Oxidative Stress Markers in Children with Obesity. Nutrients 2022; 14:nu14173637. [PMID: 36079892 PMCID: PMC9460844 DOI: 10.3390/nu14173637] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 08/23/2022] [Accepted: 08/30/2022] [Indexed: 12/03/2022] Open
Abstract
Obesity has reached epidemic proportions, and the World Health Organization defined childhood overweight and obesity as a noncommunicable disease that represents the most serious public health challenges of the twenty-first century. Oxidative stress, defined as an imbalance between oxidants and antioxidants causing an impairment of the redox signals, is linked to the development of metabolic diseases. In addition, reactive oxygen species generated during metabolic disorder could increase inflammation, causing the development of insulin resistance, diabetes, and cardiovascular disease. We analyze serum levels of cysteine (Cys), cysteinyl-glycine (Cys-Gly), homocysteine (Hcy), and glutathione (GSH), and other markers of oxidative stress, such as thiobarbituric acid reactive substances (T-BARS), 8-isoprostane, and protein carbonyl in our children with obesity. Total antioxidant status was also determined. We found lower GSH and Cys-Gly levels, and higher Hcy and oxidative stress markers levels. We also found a positive correlation between Body Mass Index (BMI), Cys, GSH, and Hcy levels, between insulin and Cys levels, and between BMI and the homeostasis model assessment-estimated insulin resistance (HOMA-IR) with 8-isoprostane levels. Finally, we found a correlation between age and GSH and Cys levels. The deficiency of GSH could be restored by dietary supplementation with GSH precursors, supplying an inexpensive approach to oppose oxidative stress, thus avoiding obesity complications.
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18
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Nascè A, Gariani K, Jornayvaz FR, Szanto I. NADPH Oxidases Connecting Fatty Liver Disease, Insulin Resistance and Type 2 Diabetes: Current Knowledge and Therapeutic Outlook. Antioxidants (Basel) 2022; 11:antiox11061131. [PMID: 35740032 PMCID: PMC9219746 DOI: 10.3390/antiox11061131] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/30/2022] [Accepted: 06/03/2022] [Indexed: 12/15/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD), characterized by ectopic fat accumulation in hepatocytes, is closely linked to insulin resistance and is the most frequent complication of type 2 diabetes mellitus (T2DM). One of the features connecting NAFLD, insulin resistance and T2DM is cellular oxidative stress. Oxidative stress refers to a redox imbalance due to an inequity between the capacity of production and the elimination of reactive oxygen species (ROS). One of the major cellular ROS sources is NADPH oxidase enzymes (NOX-es). In physiological conditions, NOX-es produce ROS purposefully in a timely and spatially regulated manner and are crucial regulators of various cellular events linked to metabolism, receptor signal transmission, proliferation and apoptosis. In contrast, dysregulated NOX-derived ROS production is related to the onset of diverse pathologies. This review provides a synopsis of current knowledge concerning NOX enzymes as connective elements between NAFLD, insulin resistance and T2DM and weighs their potential relevance as pharmacological targets to alleviate fatty liver disease.
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Affiliation(s)
- Alberto Nascè
- Service of Endocrinology, Diabetes, Nutrition and Patient Therapeutic Education, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland; (A.N.); (K.G.)
| | - Karim Gariani
- Service of Endocrinology, Diabetes, Nutrition and Patient Therapeutic Education, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland; (A.N.); (K.G.)
- Department of Medicine, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
- Diabetes Center of the Faculty of Medicine, University of Geneva Medical School, 1211 Geneva, Switzerland
| | - François R. Jornayvaz
- Service of Endocrinology, Diabetes, Nutrition and Patient Therapeutic Education, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland; (A.N.); (K.G.)
- Department of Medicine, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
- Diabetes Center of the Faculty of Medicine, University of Geneva Medical School, 1211 Geneva, Switzerland
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
- Correspondence: (F.R.J.); (I.S.)
| | - Ildiko Szanto
- Service of Endocrinology, Diabetes, Nutrition and Patient Therapeutic Education, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland; (A.N.); (K.G.)
- Department of Medicine, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
- Diabetes Center of the Faculty of Medicine, University of Geneva Medical School, 1211 Geneva, Switzerland
- Correspondence: (F.R.J.); (I.S.)
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19
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He W, Henne A, Lauterbach M, Geißmar E, Nikolka F, Kho C, Heinz A, Dostert C, Grusdat M, Cordes T, Härm J, Goldmann O, Ewen A, Verschueren C, Blay-Cadanet J, Geffers R, Garritsen H, Kneiling M, Holm CK, Metallo CM, Medina E, Abdullah Z, Latz E, Brenner D, Hiller K. Mesaconate is synthesized from itaconate and exerts immunomodulatory effects in macrophages. Nat Metab 2022; 4:524-533. [PMID: 35655024 PMCID: PMC9744384 DOI: 10.1038/s42255-022-00565-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 03/25/2022] [Indexed: 01/04/2023]
Abstract
Since its discovery in inflammatory macrophages, itaconate has attracted much attention due to its antimicrobial and immunomodulatory activity1-3. However, instead of investigating itaconate itself, most studies used derivatized forms of itaconate and thus the role of non-derivatized itaconate needs to be scrutinized. Mesaconate, a metabolite structurally very close to itaconate, has never been implicated in mammalian cells. Here we show that mesaconate is synthesized in inflammatory macrophages from itaconate. We find that both, non-derivatized itaconate and mesaconate dampen the glycolytic activity to a similar extent, whereas only itaconate is able to repress tricarboxylic acid cycle activity and cellular respiration. In contrast to itaconate, mesaconate does not inhibit succinate dehydrogenase. Despite their distinct impact on metabolism, both metabolites exert similar immunomodulatory effects in pro-inflammatory macrophages, specifically a reduction of interleukin (IL)-6 and IL-12 secretion and an increase of CXCL10 production in a manner that is independent of NRF2 and ATF3. We show that a treatment with neither mesaconate nor itaconate impairs IL-1β secretion and inflammasome activation. In summary, our results identify mesaconate as an immunomodulatory metabolite in macrophages, which interferes to a lesser extent with cellular metabolism than itaconate.
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Affiliation(s)
- Wei He
- Department of Bioinformatics and Biochemistry, Braunschweig Integrated Centre of Systems Biology (BRICS), Technische Universität Braunschweig, Braunschweig, Germany
| | - Antonia Henne
- Department of Bioinformatics and Biochemistry, Braunschweig Integrated Centre of Systems Biology (BRICS), Technische Universität Braunschweig, Braunschweig, Germany
| | - Mario Lauterbach
- Institute of Innate Immunity, University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Eike Geißmar
- Institute of Innate Immunity, University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Fabian Nikolka
- Department of Bioinformatics and Biochemistry, Braunschweig Integrated Centre of Systems Biology (BRICS), Technische Universität Braunschweig, Braunschweig, Germany
| | - Celia Kho
- Institute of Experimental Immunology, University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Alexander Heinz
- Department of Bioinformatics and Biochemistry, Braunschweig Integrated Centre of Systems Biology (BRICS), Technische Universität Braunschweig, Braunschweig, Germany
| | - Catherine Dostert
- Experimental and Molecular Immunology, Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
- Immunology and Genetics, Luxembourg Centre for System Biomedicine (LCSB), University of Luxembourg, Belval, Luxembourg
| | - Melanie Grusdat
- Experimental and Molecular Immunology, Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
- Immunology and Genetics, Luxembourg Centre for System Biomedicine (LCSB), University of Luxembourg, Belval, Luxembourg
| | - Thekla Cordes
- Department of Bioinformatics and Biochemistry, Braunschweig Integrated Centre of Systems Biology (BRICS), Technische Universität Braunschweig, Braunschweig, Germany
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, USA
- Molecular and Cell Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Janika Härm
- Department of Bioinformatics and Biochemistry, Braunschweig Integrated Centre of Systems Biology (BRICS), Technische Universität Braunschweig, Braunschweig, Germany
- Experimental and Molecular Immunology, Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
- Immunology and Genetics, Luxembourg Centre for System Biomedicine (LCSB), University of Luxembourg, Belval, Luxembourg
| | - Oliver Goldmann
- Infection Immunology Research Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Anouk Ewen
- Experimental and Molecular Immunology, Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
- Immunology and Genetics, Luxembourg Centre for System Biomedicine (LCSB), University of Luxembourg, Belval, Luxembourg
| | - Charlène Verschueren
- Experimental and Molecular Immunology, Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
- Immunology and Genetics, Luxembourg Centre for System Biomedicine (LCSB), University of Luxembourg, Belval, Luxembourg
| | | | - Robert Geffers
- Genome Analytics, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Hendrikus Garritsen
- Institute of Transfusion Medicine, Klinikum Braunschweig, Braunschweig, Germany
- Fraunhofer Institute for Surface Engineering and Thin Films IST, Braunschweig, Germany
| | - Manfred Kneiling
- Department of Dermatology, Eberhard Karls University, Tübingen, Germany
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University, Tübingen, Germany
| | | | - Christian M Metallo
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, USA
- Molecular and Cell Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Eva Medina
- Infection Immunology Research Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Zeinab Abdullah
- Institute of Experimental Immunology, University Hospital Bonn, University of Bonn, Bonn, Germany
- Department of Immunology, Tehran University of Medical Sciences, Tehran, Iran
| | - Eicke Latz
- Institute of Innate Immunity, University Hospital Bonn, University of Bonn, Bonn, Germany
- German Center for Neurodegenerative Diseases, Bonn, Germany
- Department of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA, USA
- Centre of Molecular Inflammation Research, Norwegian University of Science and Technology, Trondheim, Norway
| | - Dirk Brenner
- Experimental and Molecular Immunology, Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
- Immunology and Genetics, Luxembourg Centre for System Biomedicine (LCSB), University of Luxembourg, Belval, Luxembourg
- Odense Research Center for Anaphylaxis, Department of Dermatology and Allergy Center, Odense University Hospital, University of Southern Denmark, Odense, Denmark
| | - Karsten Hiller
- Department of Bioinformatics and Biochemistry, Braunschweig Integrated Centre of Systems Biology (BRICS), Technische Universität Braunschweig, Braunschweig, Germany.
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20
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Glutathione-dependent redox balance characterizes the distinct metabolic properties of follicular and marginal zone B cells. Nat Commun 2022; 13:1789. [PMID: 35379825 PMCID: PMC8980022 DOI: 10.1038/s41467-022-29426-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 03/11/2022] [Indexed: 11/13/2022] Open
Abstract
The metabolic principles underlying the differences between follicular and marginal zone B cells (FoB and MZB, respectively) are not well understood. Here we show, by studying mice with B cell-specific ablation of the catalytic subunit of glutamate cysteine ligase (Gclc), that glutathione synthesis affects homeostasis and differentiation of MZB to a larger extent than FoB, while glutathione-dependent redox control contributes to the metabolic dependencies of FoB. Specifically, Gclc ablation in FoB induces metabolic features of wild-type MZB such as increased ATP levels, glucose metabolism, mTOR activation, and protein synthesis. Furthermore, Gclc-deficient FoB have a block in the mitochondrial electron transport chain (ETC) due to diminished complex I and II activity and thereby accumulate the tricarboxylic acid cycle metabolite succinate. Finally, Gclc deficiency hampers FoB activation and antibody responses in vitro and in vivo, and induces susceptibility to viral infections. Our results thus suggest that Gclc is required to ensure the development of MZB, the mitochondrial ETC integrity in FoB, and the efficacy of antiviral humoral immunity. Follicular and marginal zone B (FoB and MZB, respectively) cells have divergent metabolic characteristics. Here the authors show that deficiency of glutamate cysteine ligase (Gclc), the enzyme for glutathione synthesis, differentially impacts FoB and MZB homeostasis, while specifically impeding FoB activation and downstream antiviral immunity.
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21
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Thompson B, Davidson EA, Chen Y, Orlicky DJ, Thompson DC, Vasiliou V. Oxidative stress induces inflammation of lens cells and triggers immune surveillance of ocular tissues. Chem Biol Interact 2022; 355:109804. [PMID: 35123994 PMCID: PMC9136680 DOI: 10.1016/j.cbi.2022.109804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 12/24/2021] [Accepted: 01/05/2022] [Indexed: 11/03/2022]
Abstract
Recent reports have challenged the notion that the lens is immune-privileged. However, these studies have not fully identified the molecular mechanism(s) that promote immune surveillance of the lens. Using a mouse model of targeted glutathione (GSH) deficiency in ocular surface tissues, we have investigated the role of oxidative stress in upregulating cytokine expression and promoting immune surveillance of the eye. RNA-sequencing of lenses from postnatal day (P) 1-aged Gclcf/f;Le-CreTg/- (KO) and Gclcf/f;Le-Cre-/- control (CON) mice revealed upregulation of many cytokines (e.g., CCL4, GDF15, CSF1) and immune response genes in the lenses of KO mice. The eyes of KO mice had a greater number of cells in the aqueous and vitreous humors at P1, P20 and P50 than age-matched CON and Gclcw/w;Le-CreTg/- (CRE) mice. Histological analyses revealed the presence of innate immune cells (i.e., macrophages, leukocytes) in ocular structures of the KO mice. At P20, the expression of cytokines and ROS content was higher in the lenses of KO mice than in those from age-matched CRE and CON mice, suggesting that oxidative stress may induce cytokine expression. In vitro administration of the oxidant, hydrogen peroxide, and the depletion of GSH (using buthionine sulfoximine (BSO)) in 21EM15 lens epithelial cells induced cytokine expression, an effect that was prevented by co-treatment of the cells with N-acetyl-l-cysteine (NAC), a antioxidant. The in vivo and ex vivo induction of cytokine expression by oxidative stress was associated with the expression of markers of epithelial-to-mesenchymal transition (EMT), α-SMA, in lens cells. Given that EMT of lens epithelial cells causes posterior capsule opacification (PCO), we propose that oxidative stress induces cytokine expression, EMT and the development of PCO in a positive feedback loop. Collectively these data indicate that oxidative stress induces inflammation of lens cells which promotes immune surveillance of ocular structures.
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Affiliation(s)
- Brian Thompson
- Department of Environmental Health Sciences, Yale School of Public Health, Yale University, 60 College Street, New Haven, CT, USA
| | - Emily A. Davidson
- Department of Environmental Health Sciences, Yale School of Public Health, Yale University, 60 College Street, New Haven, CT, USA.,Department of Cellular & Molecular Physiology, Yale School of Medicine, Yale University, New Haven, CT, USA
| | - Ying Chen
- Department of Environmental Health Sciences, Yale School of Public Health, Yale University, 60 College Street, New Haven, CT, USA
| | - David J. Orlicky
- Department of Pathology, Anschutz School of Medicine, University of Colorado, Aurora, CO, USA
| | - David C. Thompson
- Department of Environmental Health Sciences, Yale School of Public Health, Yale University, 60 College Street, New Haven, CT, USA.,Department of Clinical Pharmacy, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Denver, Aurora, CO, USA
| | - Vasilis Vasiliou
- Department of Environmental Health Sciences, Yale School of Public Health, Yale University, 60 College Street, New Haven, CT, USA.
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22
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Nrf2/ARE axis signalling in hepatocyte cellular death. Mol Biol Rep 2022; 49:4039-4053. [PMID: 35020121 DOI: 10.1007/s11033-022-07125-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 01/04/2022] [Indexed: 02/07/2023]
Abstract
The Nrf2-ARE transcriptional pathway plays an important role amongst cellular defence systems regulating and ensuring adequacy of redox responses and oxidant signalling factors. Hepatocyte cellular death and injury is a prominent feature underlying liver pathologies. Diverse endogenous molecules and targets contribute to the outcome of cell survival and the consequent mode of cell death. Several research efforts focused on the confirmation of Nrf2 presence in cell death and its vital necessity against cell compromise, however, little they comprehend of such participation. Hepatocyte cell death modes discussed in this review including autophagy, apoptosis, necrosis, ferroptosis, pyroptosis, fibrosis and others, vary in response of the stimuli burdened. The current review presents a handful of highlights and crosstalk involved in the communication of Nrf2 signalling network with the "up to date" reported hepatocyte cell death modes and their underling mechanisms, and addressing key cellular networks of hepatocyte fate, through a perspective of Nrf2 as a critical transcriptional factor. Collectively, labelling the cross-transduction of Nrf2-ARE axis with key cell execution pathways could provide insights to therapeutic interventions and better research outcomes.
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23
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Ligaza γ-glutamylocysteiny – od molekularnych mechanizmów regulacji aktywności enzymatycznej do implikacji terapeutycznych. POSTEP HIG MED DOSW 2021. [DOI: 10.2478/ahem-2021-0013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Abstrakt
Glutation (γ-glutamylocysteinyloglicyna, GSH) jest najbardziej rozpowszechnionym tiolowym antyoksydantem wytwarzanym w cytozolu wszystkich komórek ssaków, który pełni ważną rolę ochronną przed stresem oksydacyjnym. GSH jest syntetyzowany de novo przez sekwencyjne działanie dwóch enzymów: ligazy γ-glutamylocysteiny (GCL) i syntetazy glutationowej (GS). GCL katalizuje pierwszy etap biosyntezy GSH, którego produktem jest γ-glutamylocysteina (γ-GC). GCL jest heterodimerycznym enzymem zbudowanym z podjednostki katalitycznej (GCLc) i modulatorowej (GCLm), kodowanych przez dwa różne geny. Podjednostki GCL podlegają złożonej regulacji zarówno na poziomie przed-, jak i potranslacyjnym. Zmiany w ekspresji i aktywności GCL mogą zaburzać poziom GSH i homeostazy redoks. Przyczyną wielu przewlekłych schorzeń związanych ze stresem oksydacyjnym jest upośledzenie aktywności katalitycznej GCL oraz spadek stężenia GSH. Badania przedkliniczne sugerują, że podawanie egzogennej γ-GC podwyższa wewnątrzkomórkowe GSH przez dostarczenie brakującego substratu i może wykazywać potencjał jako terapia uzupełniająca w chorobach związanych z deplecją GSH.
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24
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Su H, Huang J, Weng S, Zhang B, Zhang T, Xu Y. Glutathione synthesis primes monocytes metabolic and epigenetic pathway for β-glucan-trained immunity. Redox Biol 2021; 48:102206. [PMID: 34894475 PMCID: PMC8669111 DOI: 10.1016/j.redox.2021.102206] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 11/23/2021] [Accepted: 12/06/2021] [Indexed: 11/24/2022] Open
Abstract
Trained monocytes and macrophages produce reactive oxygen species (ROS), which trigger antioxidative glutathione (GSH) response to buffer the rising ROS. However, whether and how the trained immunity is shaped by GSH synthesis remains unknown. Here, we report that β-glucan-trained macrophages from mice harboring a myeloid-specific deletion of the catalytic subunit of glutamate-cysteine ligase (Gclc) showed impaired GSH synthesis and decreased proinflammatory cytokine production in response to lipopolysaccharide challenge. Gclc deficiency compromised the activation of mammalian target of rapamycin-1 (mTOR) and expression of c-Myc transcription factors, abrogating the energy utilization and the metabolic reprogramming that allows β-glucan-trained macrophages to switch to glycolysis and glutaminolysis. Furthermore, Gclc deletion repressed effective H3K27me3 demethylation in the promoters of immunometabolic genes, such as Gls, Hk2, and Glut1, in β-glucan-trained macrophages by promoting the methyltransferase enhancer of zeste homolog 2 (EZH2). In vivo, myeloid-specific ablation of Gclc decreased the secretion of proinflammatory cytokines upon rechallenge with Candida albicans and these animals were less protected against the infection, compared with control littermates. Moreover, pharmacological inhibition of EZH2 enhanced the trained immunity response against Candida infection in Gclc-deficient mouse and human peripheral blood mononuclear cells treated with GCLC inhibitor buthionine sulfoximine (BSO). Thus, antioxidative GSH synthesis supports an environment conducive to β-glucan-induced metabolic and epigenetic reprogramming in trained immunity, allowing exploration of its functional consequences in autoimmune or inflammatory disease.
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Affiliation(s)
- Haibo Su
- GMU-GIBH Joint School of Life Science, Guangzhou Medical University, No. 195 Dongfengxi Road, Guangzhou, 510000, China.
| | - Jiaxin Huang
- GMU-GIBH Joint School of Life Science, Guangzhou Medical University, No. 195 Dongfengxi Road, Guangzhou, 510000, China
| | - Shufeng Weng
- State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, No. 220 Handan Road, Shanghai, 200433, China
| | - Baoying Zhang
- GMU-GIBH Joint School of Life Science, Guangzhou Medical University, No. 195 Dongfengxi Road, Guangzhou, 510000, China
| | - Tianran Zhang
- State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, No. 220 Handan Road, Shanghai, 200433, China
| | - Ying Xu
- State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, No. 220 Handan Road, Shanghai, 200433, China.
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25
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Determination of metabolic phenotype and potential biomarkers in the liver of heroin addicted mice with hepatotoxicity. Life Sci 2021; 287:120103. [PMID: 34743944 DOI: 10.1016/j.lfs.2021.120103] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 10/22/2021] [Accepted: 10/25/2021] [Indexed: 01/04/2023]
Abstract
BACKGROUND Heroin is a semi-synthetic opioid that is commonly abused drugs in the world. It can cause hepatic injury and lead to multiple organs dysfunction to its addicts. Only a few reports exist on the metabolic changes and mechanisms in the liver of heroin-addicted mice with hepatic injury. METHODS Twelve adult male Kunming mice (30-40 g) were divided into two groups randomly. The mice in the heroin-addicted group were injected subcutaneously in the first ten days with an increased dosage of heroin from 10 mg/kg to 55 mg/kg. The dosage was then stabilized at 55 mg/kg for three days. The control group was injected with the same amount of saline in the same manner. The hepatic injury was confirmed through the combination of histopathological observation and aminotransferase (AST) and alanine aminotransferase (ALT) determination. The withdrawal symptoms were recorded and used for assessment of heroin addiction. Eventually, liver metabolic biomarkers of heroin-addicted mice with hepatotoxicity were measured using UHPLC-MS/MS. RESULTS Biochemical analysis and histopathological observation showed that heroin-addicted mice had a liver injury. The liver metabolites of heroin-addicted mice changed significantly. Metabonomics analysis revealed 41 metabolites in the liver of addicted heroin mice as biomarkers involving 34 metabolic pathways. Among them, glutathione metabolism, taurine and hypotaurine metabolism, vitamin B2 metabolism, riboflavin metabolism, and single-carbon metabolism pathways were markedly dispruted. CONCLUSIONS Heroin damages the liver and disrupts the liver's metabolic pathways. Glutathione, taurine, riboflavin, 4-pyridoxate, folic acid, and methionine are important metabolic biomarkers, which may be key targets of heroin-induced liver damage. Thus, this study provides an in-depth understanding of the mechanisms of heroin-induced hepatotoxicity and potential biomarkers of liver damage.
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26
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Thompson B, Chen Y, Davidson EA, Garcia-Milian R, Golla JP, Apostolopoulos N, Orlicky DJ, Schey K, Thompson DC, Vasiliou V. Impaired GSH biosynthesis disrupts eye development, lens morphogenesis and PAX6 function. Ocul Surf 2021; 22:190-203. [PMID: 34425299 DOI: 10.1016/j.jtos.2021.08.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/29/2021] [Accepted: 08/16/2021] [Indexed: 12/14/2022]
Abstract
PURPOSE The purpose of this study was to elucidate the role and molecular consequences of impaired glutathione (GSH) biosynthesis on eye development. METHODS GSH biosynthesis was impaired in surface ectoderm-derived ocular tissues by crossing Gclcf/f mice with hemizygous Le-Cre transgenic mice to produce Gclcf/f/Le-CreTg/- (KO) mice. Control mice included Gclcf/fand Gclcwt/wt/Le-CreTg/- mice (CRE). Eyes from all mice (at various stages of eye development) were subjected to histological, immunohistochemical, Western blot, RT-qPCR, RNA-seq, and subsequent Gene Ontology, Ingenuity Pathway Analysis and TRANSFAC analyses. PAX6 transactivation activity was studied using a luciferase reporter assay in HEK293T cells depleted of GSH using buthionine sulfoximine (BSO). RESULTS Deletion of Gclc diminished GSH levels, increased reactive oxygen species (ROS), and caused an overt microphthalmia phenotype characterized by malformation of the cornea, iris, lens, and retina that is distinct from and much more profound than the one observed in CRE mice. In addition, only the lenses of KO mice displayed reduced crystallin (α, β), PITX3 and Foxe3 expression. RNA-seq analyses at postnatal day 1 revealed 1552 differentially expressed genes (DEGs) in the lenses of KO mice relative to those from Gclcf/f mice, with Crystallin and lens fiber cell identity genes being downregulated while lens epithelial cell identity and immune response genes were upregulated. Bioinformatic analysis of the DEGs implicated PAX6 as a key upstream regulator. PAX6 transactivation activity was impaired in BSO-treated HEK293T cells. CONCLUSIONS These data suggest that impaired ocular GSH biosynthesis may disrupt eye development and PAX6 function.
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Affiliation(s)
- Brian Thompson
- Department of Environmental Health Sciences, Yale School of Public Health, Yale University, 60 College Street, New Haven, CT, USA
| | - Ying Chen
- Department of Environmental Health Sciences, Yale School of Public Health, Yale University, 60 College Street, New Haven, CT, USA
| | - Emily A Davidson
- Department of Environmental Health Sciences, Yale School of Public Health, Yale University, 60 College Street, New Haven, CT, USA; Department of Cellular & Molecular Physiology, Yale School of Medicine, Yale University, New Haven, CT, USA
| | - Rolando Garcia-Milian
- Bioinformatics Support Program, Cushing/Whitney Medical Library, Yale School of Medicine, New Haven, CT, USA
| | - Jaya Prakash Golla
- Department of Environmental Health Sciences, Yale School of Public Health, Yale University, 60 College Street, New Haven, CT, USA; Department of Medicine, Yale University School of Medicine, New Haven, CT, USA; Veterans Affairs Connecticut Healthcare System, West Haven, CT, USA
| | | | - David J Orlicky
- Department of Pathology, Anschutz School of Medicine, University of Colorado, Aurora, CO, USA
| | - Kevin Schey
- Department of Biochemistry and Mass Spectrometry Research Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - David C Thompson
- Department of Clinical Pharmacy, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Denver, Aurora, CO, USA
| | - Vasilis Vasiliou
- Department of Environmental Health Sciences, Yale School of Public Health, Yale University, 60 College Street, New Haven, CT, USA.
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27
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Thacker JB, He C, Pennathur S. Quantitative analysis of γ-glutamylisoleucine, γ-glutamylthreonine, and γ-glutamylvaline in HeLa cells using UHPLC-MS/MS. J Sep Sci 2021; 44:2898-2907. [PMID: 34042281 DOI: 10.1002/jssc.202001266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 05/20/2021] [Accepted: 05/25/2021] [Indexed: 12/30/2022]
Abstract
γ-Glutamylpeptides have been identified as potential biomarkers for a number of diseases including cancer, diabetes, and liver disease. In this study, we developed and validated a novel quantitative analytical strategy for measuring γ-glutamylisoleucine, γ-glutamylthreonine, and γ-glutamylvaline, all of which have been previously reported as potential biomarkers for prostate cancer in HeLa cells using ultra-high-performance liquid chromatography-tandem mass spectrometry. A BEH C18 column was used as the stationary phase. Mobile phase A was 99:1 water:formic acid and mobile phase B was acetonitrile. Chemical isotope labeling using benzoyl chloride was used as the internal standardization strategy. Sample preparation consisted of the addition of water to a frozen cell pellet, sonication, derivatization, centrifugation, and subsequent addition of an internal standard solution. The method was validated for selectivity, accuracy, precision, linearity, and stability. The determined concentrations of γ-glutamylisoleucine, γ-glutamylthreonine, and γ-glutamylvaline in HeLa cells were 1.92 ± 0.06, 10.8 ± 0.4, and 1.96 ± 0.04 pmol/mg protein, respectively. In addition, the qualitative analysis of these analytes in human serum was achieved using a modified sample preparation strategy. To the best of our knowledge, this is the first report of the use of benzoyl chloride for chemical isotope labeling for metabolite quantitation in cells.
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Affiliation(s)
- Jonathan B Thacker
- Division of Nephrology, Department of Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Chenchen He
- Division of Nephrology, Department of Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Subramaniam Pennathur
- Division of Nephrology, Department of Medicine, University of Michigan, Ann Arbor, Michigan, USA.,Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan, USA
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28
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Protective Effect of Lactobacillus rhamnosus GG on TiO 2 Nanoparticles-Induced Oxidative Stress Damage in the Liver of Young Rats. NANOMATERIALS 2021; 11:nano11030803. [PMID: 33801059 PMCID: PMC8004042 DOI: 10.3390/nano11030803] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 03/13/2021] [Accepted: 03/18/2021] [Indexed: 12/17/2022]
Abstract
The potential toxicity of titanium dioxide nanoparticles (TiO2 NPs) to mammals has become a widespread concern. Young individuals exposed to TiO2 NPs have a higher risk than adults. In this study, the protective effects of Lactobacillus rhamnosus GG (LGG) on liver toxicity in young rats induced by TiO2 NPs were explored. Results show that the four-week-old rats that underwent LGG after the oral intake of TiO2 NPs could prevent weight loss, reduce hematological indicators (WBC and NEUT) and serum biochemical indicators (AST, ALT, AST/ALT, and ALP). Moreover, it alleviated the pathological damage of the liver (as indicated by the disordered hepatocytes, more eosinophilic, ballooning degeneration, and accompany with blood cells), but it did not reduce the Ti contents in the liver. In addition, RT-qPCR results indicated that LGG restored the expression of anti-oxidative stress-related genes, such as SOD1, SOD2, CAT, HO-1, GSH, GCLC, and GCLM in the liver. In summary, the hepatotoxicity of TiO2 NPs in young rats is closely related to oxidative stress, and the antioxidant effect of LGG might protect the harmful effects caused by TiO2 NPs.
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Kang YP, Mockabee-Macias A, Jiang C, Falzone A, Prieto-Farigua N, Stone E, Harris IS, DeNicola GM. Non-canonical Glutamate-Cysteine Ligase Activity Protects against Ferroptosis. Cell Metab 2021; 33:174-189.e7. [PMID: 33357455 PMCID: PMC7839835 DOI: 10.1016/j.cmet.2020.12.007] [Citation(s) in RCA: 156] [Impact Index Per Article: 52.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 10/09/2020] [Accepted: 12/08/2020] [Indexed: 02/06/2023]
Abstract
Cysteine is required for maintaining cellular redox homeostasis in both normal and transformed cells. Deprivation of cysteine induces the iron-dependent form of cell death known as ferroptosis; however, the metabolic consequences of cysteine starvation beyond impairment of glutathione synthesis are poorly characterized. Here, we find that cystine starvation of non-small-cell lung cancer cell lines induces an unexpected accumulation of γ-glutamyl-peptides, which are produced due to a non-canonical activity of glutamate-cysteine ligase catalytic subunit (GCLC). This activity is enriched in cell lines with high levels of NRF2, a key transcriptional regulator of GCLC, but is also inducible in healthy murine tissues following cysteine limitation. γ-glutamyl-peptide synthesis limits the accumulation of glutamate, thereby protecting against ferroptosis. These results indicate that GCLC has a glutathione-independent, non-canonical role in the protection against ferroptosis by maintaining glutamate homeostasis under cystine starvation.
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Affiliation(s)
- Yun Pyo Kang
- Department of Cancer Physiology, H. Lee. Moffitt Cancer Center, Tampa, FL 33612, USA
| | | | - Chang Jiang
- Department of Cancer Physiology, H. Lee. Moffitt Cancer Center, Tampa, FL 33612, USA
| | - Aimee Falzone
- Department of Cancer Physiology, H. Lee. Moffitt Cancer Center, Tampa, FL 33612, USA
| | | | - Everett Stone
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712, USA
| | - Isaac S Harris
- University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Gina M DeNicola
- Department of Cancer Physiology, H. Lee. Moffitt Cancer Center, Tampa, FL 33612, USA.
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30
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Morio B, Panthu B, Bassot A, Rieusset J. Role of mitochondria in liver metabolic health and diseases. Cell Calcium 2020; 94:102336. [PMID: 33387847 DOI: 10.1016/j.ceca.2020.102336] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/18/2020] [Accepted: 12/18/2020] [Indexed: 02/07/2023]
Abstract
The liver is a major organ that coordinates the metabolic flexibility of the whole body, which is characterized by the ability to adapt dynamically in response to fluctuations in energy needs and supplies. In this context, hepatocyte mitochondria are key partners in fine-tuning metabolic flexibility. Here we review the metabolic and signalling pathways carried by mitochondria in the liver, the major pathways that regulate mitochondrial function and how they function in health and metabolic disorders associated to obesity, i.e. insulin resistance, non-alcoholic steatosis and steatohepatitis and hepatocellular carcinoma. Finally, strategies targeting mitochondria to counteract liver disorders are discussed.
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Affiliation(s)
- Béatrice Morio
- CarMeN Laboratory, INSERM U1060, INRA U1397, Lyon, France
| | | | - Arthur Bassot
- Department of Cell Biology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G2H7, Canada
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31
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Solano-Urrusquieta A, Morales-González JA, Castro-Narro GE, Cerda-Reyes E, Flores-Rangel PD, Fierros-Oceguera R. NRF-2 and nonalcoholic fatty liver disease. Ann Hepatol 2020; 19:458-465. [PMID: 31959521 DOI: 10.1016/j.aohep.2019.11.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 11/21/2019] [Accepted: 11/25/2019] [Indexed: 02/07/2023]
Abstract
Currently, chronic liver diseases have conditioned morbidity and mortality, many of these with a metabolic, toxicologic, immunologic, viral, or other etiology. Thus, a transcription factor that has been of huge importance for biomedical research is NRF-2. The latter is considered a principal component of the antioxidant mechanism, and it has been acknowledged that it impairs the function of NRF-2 in many liver diseases and that it forms an essential part of the pathologic changes that occur in the liver to contain inflammation and damage. Within the investigations and experiments carried out, there are isolated drugs, many of them related to plants and natural extracts that possess antioxidant properties through the NRF-2 signaling pathway, or even involving the stimulation of the transcription target proteins of NRF-2. Notwithstanding all of these experimental findings, to date there is not sufficient clinical evidence to justify the use of NRF-2 in medical practice.
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Affiliation(s)
| | - José A Morales-González
- Laboratory of Conservation Medicine, Higher School of Medicine, Instituto Politécnico Nacional, Mexico
| | | | - Eira Cerda-Reyes
- Gastroenterology Section of the Central Military Hospital, Mexico City, Mexico
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32
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Chen B, Hong W, Tang Y, Zhao Y, Aguilar ZP, Xu H. Protective effect of the NAC and Sal on zinc oxide nanoparticles-induced reproductive and development toxicity in pregnant mice. Food Chem Toxicol 2020; 143:111552. [PMID: 32640348 DOI: 10.1016/j.fct.2020.111552] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 05/22/2020] [Accepted: 06/20/2020] [Indexed: 12/12/2022]
Abstract
The growing use of zinc oxide nanoparticles (ZnO NPs) in various applications has raised many concerns about the potential risks to human health. In this research, the protective effects of cellular oxidative stress inhibitor N-Acetyl-cysteine (NAC) and endoplasmic reticulum (ER) stress inhibitor Salubrinal (Sal) on reproductive toxicity induced by ZnO NPs were investigated. The results showed that application of these two kinds of cell stress inhibitors after oral ingestion of ZnO NPs could prevent the weight loss of pregnant mice; reduce zinc content in the uterus, placenta and fetus; reduce abnormal development of the offspring; and decrease fetal abortion. Furthermore, RT-qPCR, Western blot and immunofluorescence assay results indicated that NAC restored the expression of Gclc, reduced the expression of ATF4, JNK and Caspase-12, and decreased the expression of eNOS and IGF-1, in the placenta. Sal decreased the expression of ATF4, JNK and Caspase-12, and increased the expression of eNOS and IGF-1caused by the oral ingestion of ZnO NPs. These results indicated that treatment with NAC and Sal after oral exposure could reduce reproductive and development toxicity caused by ZnO NPs which induced reproductive and development toxicity that was probably caused by the activation of oxide stress and ER stress.
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Affiliation(s)
- Bolu Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | - Wuding Hong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | - Yizhou Tang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | - Yu Zhao
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | | | - Hengyi Xu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China.
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33
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Zhang Y, Li F, Jiang X, Jiang X, Wang Y, Zhang H, Zhang L, Fan S, Xin L, Yang B, Ji G, Huang C. Sophoricoside is a selective LXRβ antagonist with potent therapeutic effects on hepatic steatosis of mice. Phytother Res 2020; 34:3168-3179. [PMID: 32592532 DOI: 10.1002/ptr.6747] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 05/10/2020] [Accepted: 05/13/2020] [Indexed: 12/17/2022]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is a chronic liver disease characterized by the accumulation of triglycerides and associated with obesity, hyperlipidemia and insulin resistance. Currently, there is no therapy for NAFLD. Emerging evidences suggest that the inhibition of liver X receptor (LXR) activity may be a potential therapy for hepatic steatosis. Here, we identified that sophoricoside is a selective antagonist of LXRβ. Sophoricoside protected against obesity and glucose tolerance, and inhibited lipid accumulation in the liver of high-fat diet-induced obesity (DIO) mice and methionine and choline-deficient diet-induced nonalcoholic steatohepatitis mice. Furthermore, sophoricoside inhibited malondialdehyde, and increased superoxide dismutase and glutathione in the liver of the mice. In HepG2 cells, pretreatment with sophoricoside rescued GSH concentration decrease induced by H2 O2 treatment. Our data suggest that sophoricoside is a novel LXRβ selective antagonist and may improve glucose and lipid dysfunction, and attenuate lipid accumulation in the liver of DIO mice via anti-oxidant properties, which may be developed as a therapy for NAFLD.
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Affiliation(s)
- Yu Zhang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,School of Life Science and Technology, Shanghai Tech University, Shanghai, China
| | - Fei Li
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xi Jiang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiqian Jiang
- Department of Pharmacology and Chemical Biology, Baylor College of Medicine, Houston, Texas, USA
| | - Yahui Wang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Haiyan Zhang
- Institute of Digestive Disease, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Li Zhang
- Institute of Digestive Disease, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Shengjie Fan
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lianjun Xin
- Institute of Digestive Disease, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Baican Yang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Guang Ji
- Institute of Digestive Disease, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Cheng Huang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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34
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Kurniawan H, Franchina DG, Guerra L, Bonetti L, -Baguet LS, Grusdat M, Schlicker L, Hunewald O, Dostert C, Merz MP, Binsfeld C, Duncan GS, Farinelle S, Nonnenmacher Y, Haight J, Das Gupta D, Ewen A, Taskesen R, Halder R, Chen Y, Jäger C, Ollert M, Wilmes P, Vasiliou V, Harris IS, Knobbe-Thomsen CB, Turner JD, Mak TW, Lohoff M, Meiser J, Hiller K, Brenner D. Glutathione Restricts Serine Metabolism to Preserve Regulatory T Cell Function. Cell Metab 2020; 31:920-936.e7. [PMID: 32213345 PMCID: PMC7265172 DOI: 10.1016/j.cmet.2020.03.004] [Citation(s) in RCA: 110] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 12/26/2019] [Accepted: 03/02/2020] [Indexed: 01/03/2023]
Abstract
Regulatory T cells (Tregs) maintain immune homeostasis and prevent autoimmunity. Serine stimulates glutathione (GSH) synthesis and feeds into the one-carbon metabolic network (1CMet) essential for effector T cell (Teff) responses. However, serine's functions, linkage to GSH, and role in stress responses in Tregs are unknown. Here, we show, using mice with Treg-specific ablation of the catalytic subunit of glutamate cysteine ligase (Gclc), that GSH loss in Tregs alters serine import and synthesis and that the integrity of this feedback loop is critical for Treg suppressive capacity. Although Gclc ablation does not impair Treg differentiation, mutant mice exhibit severe autoimmunity and enhanced anti-tumor responses. Gclc-deficient Tregs show increased serine metabolism, mTOR activation, and proliferation but downregulated FoxP3. Limitation of cellular serine in vitro and in vivo restores FoxP3 expression and suppressive capacity of Gclc-deficient Tregs. Our work reveals an unexpected role for GSH in restricting serine availability to preserve Treg functionality.
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Affiliation(s)
- Henry Kurniawan
- Experimental & Molecular Immunology, Department of Infection and Immunity, Luxembourg Institute of Health, 29 Rue Henri Koch, Esch-sur-Alzette, Luxembourg
| | - Davide G Franchina
- Experimental & Molecular Immunology, Department of Infection and Immunity, Luxembourg Institute of Health, 29 Rue Henri Koch, Esch-sur-Alzette, Luxembourg
| | - Luana Guerra
- Experimental & Molecular Immunology, Department of Infection and Immunity, Luxembourg Institute of Health, 29 Rue Henri Koch, Esch-sur-Alzette, Luxembourg
| | - Lynn Bonetti
- Experimental & Molecular Immunology, Department of Infection and Immunity, Luxembourg Institute of Health, 29 Rue Henri Koch, Esch-sur-Alzette, Luxembourg
| | - Leticia Soriano -Baguet
- Experimental & Molecular Immunology, Department of Infection and Immunity, Luxembourg Institute of Health, 29 Rue Henri Koch, Esch-sur-Alzette, Luxembourg
| | - Melanie Grusdat
- Experimental & Molecular Immunology, Department of Infection and Immunity, Luxembourg Institute of Health, 29 Rue Henri Koch, Esch-sur-Alzette, Luxembourg
| | - Lisa Schlicker
- Braunschweig Integrated Center of Systems Biology (BRICS), Technische Universität Braunschweig, Rebenring 56, 38106 Braunschweig; Computational Biology of Infection Research, Helmholtz Centre for Infection Research, Inhoffenstraße 7, 38124 Braunschweig, Germany
| | - Oliver Hunewald
- Allergy and Clinical Immunology, Department of Infection and Immunity, Luxembourg Institute of Health, 29 Rue Henri Koch, L-4354 Esch-sur-Alzette, Luxembourg
| | - Catherine Dostert
- Experimental & Molecular Immunology, Department of Infection and Immunity, Luxembourg Institute of Health, 29 Rue Henri Koch, Esch-sur-Alzette, Luxembourg
| | - Myriam P Merz
- Immune Endocrine Epigenetics Research Group, Department of Infection and Immunity, Luxembourg Institute of Health, 29 Rue Henri Koch, L-4354 Esch-sur-Alzette, Grand Duchy of Luxembourg
| | - Carole Binsfeld
- Experimental & Molecular Immunology, Department of Infection and Immunity, Luxembourg Institute of Health, 29 Rue Henri Koch, Esch-sur-Alzette, Luxembourg
| | - Gordon S Duncan
- The Campbell Family Cancer Research Institute, Ontario Cancer Institute University Health Network, Toronto, ON, Canada
| | - Sophie Farinelle
- Experimental & Molecular Immunology, Department of Infection and Immunity, Luxembourg Institute of Health, 29 Rue Henri Koch, Esch-sur-Alzette, Luxembourg
| | - Yannic Nonnenmacher
- Braunschweig Integrated Center of Systems Biology (BRICS), Technische Universität Braunschweig, Rebenring 56, 38106 Braunschweig; Computational Biology of Infection Research, Helmholtz Centre for Infection Research, Inhoffenstraße 7, 38124 Braunschweig, Germany
| | - Jillian Haight
- The Campbell Family Cancer Research Institute, Ontario Cancer Institute University Health Network, Toronto, ON, Canada
| | - Dennis Das Gupta
- Institute for Medical Microbiology and Hospital Hygiene, University of Marburg, Marburg, Germany
| | - Anouk Ewen
- Experimental & Molecular Immunology, Department of Infection and Immunity, Luxembourg Institute of Health, 29 Rue Henri Koch, Esch-sur-Alzette, Luxembourg
| | - Rabia Taskesen
- Departments of Medical Biophysics and Immunology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Rashi Halder
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, 7 Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Ying Chen
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, CT, USA
| | - Christian Jäger
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, 7 Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Markus Ollert
- Allergy and Clinical Immunology, Department of Infection and Immunity, Luxembourg Institute of Health, 29 Rue Henri Koch, L-4354 Esch-sur-Alzette, Luxembourg; Odense Research Center for Anaphylaxis (ORCA), Department of Dermatology and Allergy Center, Odense University Hospital, University of Southern Denmark, Odense, Denmark
| | - Paul Wilmes
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, 7 Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Vasilis Vasiliou
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, CT, USA
| | - Isaac S Harris
- Department of Biomedical Genetics and Wilmot Cancer Institute, University of Rochester Medical Center, 601 Elmwood Ave, Rochester, New York, USA
| | - Christiane B Knobbe-Thomsen
- Departments of Medical Biophysics and Immunology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Jonathan D Turner
- Immune Endocrine Epigenetics Research Group, Department of Infection and Immunity, Luxembourg Institute of Health, 29 Rue Henri Koch, L-4354 Esch-sur-Alzette, Grand Duchy of Luxembourg
| | - Tak W Mak
- The Campbell Family Cancer Research Institute, Ontario Cancer Institute University Health Network, Toronto, ON, Canada; Departments of Medical Biophysics and Immunology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada; The University of Hong Kong, Hong Kong SAR, China
| | - Michael Lohoff
- Institute for Medical Microbiology and Hospital Hygiene, University of Marburg, Marburg, Germany
| | - Johannes Meiser
- Cancer Metabolism Group, Department of Oncology, 84 Val Fleuri, Luxembourg, Luxembourg
| | - Karsten Hiller
- Braunschweig Integrated Center of Systems Biology (BRICS), Technische Universität Braunschweig, Rebenring 56, 38106 Braunschweig; Computational Biology of Infection Research, Helmholtz Centre for Infection Research, Inhoffenstraße 7, 38124 Braunschweig, Germany
| | - Dirk Brenner
- Experimental & Molecular Immunology, Department of Infection and Immunity, Luxembourg Institute of Health, 29 Rue Henri Koch, Esch-sur-Alzette, Luxembourg; Odense Research Center for Anaphylaxis (ORCA), Department of Dermatology and Allergy Center, Odense University Hospital, University of Southern Denmark, Odense, Denmark; Immunology & Genetics, Luxembourg Centre for Systems Biomedicine, University of Luxembourg, 7 Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg.
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35
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Intrabody against prolyl hydroxylase 2 ameliorates acetaminophen-induced acute liver injury in mice via concomitant promotion of angiogenesis and redox homeostasis. Biomed Pharmacother 2020; 123:109783. [DOI: 10.1016/j.biopha.2019.109783] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 12/05/2019] [Accepted: 12/08/2019] [Indexed: 12/20/2022] Open
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36
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Li ZQ, Wang LL, Zhou J, Zheng X, Jiang Y, Li P, Li HJ. Integration of transcriptomics and metabolomics profiling reveals the metabolic pathways affected in dictamnine-induced hepatotoxicity in mice. J Proteomics 2020; 213:103603. [DOI: 10.1016/j.jprot.2019.103603] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 10/12/2019] [Accepted: 12/03/2019] [Indexed: 02/07/2023]
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37
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Understanding of ROS-Inducing Strategy in Anticancer Therapy. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:5381692. [PMID: 31929855 PMCID: PMC6939418 DOI: 10.1155/2019/5381692] [Citation(s) in RCA: 195] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 11/19/2019] [Accepted: 11/23/2019] [Indexed: 02/06/2023]
Abstract
Redox homeostasis is essential for the maintenance of diverse cellular processes. Cancer cells have higher levels of reactive oxygen species (ROS) than normal cells as a result of hypermetabolism, but the redox balance is maintained in cancer cells due to their marked antioxidant capacity. Recently, anticancer therapies that induce oxidative stress by increasing ROS and/or inhibiting antioxidant processes have received significant attention. The acceleration of accumulative ROS disrupts redox homeostasis and causes severe damage in cancer cells. In this review, we describe ROS-inducing cancer therapy and the anticancer mechanism employed by prooxidative agents. To understand the comprehensive biological response to certain prooxidative anticancer drugs such as 2-methoxyestradiol, buthionine sulfoximine, cisplatin, doxorubicin, imexon, and motexafin gadolinium, we propose and visualize the drug-gene, drug-cell process, and drug-disease interactions involved in oxidative stress induction and antioxidant process inhibition as well as specific side effects of these drugs using pathway analysis with a big data-based text-mining approach. Our review will be helpful to improve the therapeutic effects of anticancer drugs by providing information about biological changes that occur in response to prooxidants. For future directions, there is still a need for pharmacogenomic studies on prooxidative agents as well as the molecular mechanisms underlying the effects of the prooxidants and/or antioxidant-inhibitor agents for effective anticancer therapy through selective killing of cancer cells.
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38
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Chen Y, Manna SK, Golla S, Krausz KW, Cai Y, Garcia-Milian R, Chakraborty T, Chakraborty J, Chatterjee R, Thompson DC, Gonzalez FJ, Vasiliou V. Glutathione deficiency-elicited reprogramming of hepatic metabolism protects against alcohol-induced steatosis. Free Radic Biol Med 2019; 143:127-139. [PMID: 31351176 PMCID: PMC6848780 DOI: 10.1016/j.freeradbiomed.2019.07.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 05/26/2019] [Accepted: 07/23/2019] [Indexed: 12/21/2022]
Abstract
Depletion of glutathione (GSH) is considered a critical pathogenic event promoting alcohol-induced lipotoxicity. We recently show that systemic GSH deficiency in mice harboring a global disruption of the glutamate-cysteine ligase modifier subunit (Gclm) gene confers protection against alcohol-induced steatosis. While several molecular pathways have been linked to the observed hepatic protection, including nuclear factor erythroid 2-related factor 2 and AMP-activated protein kinase pathways, the precise mechanisms are yet to be defined. In this study, to gain insights into the molecular mechanisms underpinning the protective effects of loss of GCLM, global profiling of hepatic polar metabolites combined with liver microarray analysis was carried out. These inter-omics analyses revealed both low GSH- and alcohol-driven changes in multiple cellular pathways involving the metabolism of amino acids, fatty acid, glucose and nucleic acids. Notably, several metabolic changes were uniquely present in alcohol-treated Gclm-null mouse livers, including acetyl-CoA enrichment and diversion of acetyl-CoA flux from lipogenesis to alterative metabolic pathways, elevation in glutamate concentration, and induction of the glucuronate pathway and nucleotide biosynthesis. These metabolic features reflect low GSH-elicited cellular response to chronic alcohol exposure, which is beneficial for the maintenance of hepatic redox and metabolic homeostasis. The current study indicates that fine-tuning of hepatic GSH pool may evoke metabolic reprogramming to cope with alcohol-induced cellular stress.
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Affiliation(s)
- Ying Chen
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, CT, 06521, USA
| | - Soumen K Manna
- Biophysics and Structural Genomics Division, Saha Institute of Nuclear Physics-HBNI, Kolkata, 700064, India
| | - Srujana Golla
- Laboratory of Metabolism, National Cancer Institute, Bethesda, MD, 20852, USA
| | - Kristopher W Krausz
- Laboratory of Metabolism, National Cancer Institute, Bethesda, MD, 20852, USA
| | - Yan Cai
- Laboratory of Metabolism, National Cancer Institute, Bethesda, MD, 20852, USA
| | | | - Tanushree Chakraborty
- Biophysics and Structural Genomics Division, Saha Institute of Nuclear Physics-HBNI, Kolkata, 700064, India
| | | | | | - David C Thompson
- Department of Clinical Pharmacology, University of Colorado AMC, Aurora, CO, 80045, USA
| | - Frank J Gonzalez
- Laboratory of Metabolism, National Cancer Institute, Bethesda, MD, 20852, USA
| | - Vasilis Vasiliou
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, CT, 06521, USA.
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39
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Down-regulation of GCLC is involved in microcystin-LR-induced malignant transformation of human liver cells. Toxicology 2019; 421:49-58. [DOI: 10.1016/j.tox.2019.03.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 03/04/2019] [Accepted: 03/27/2019] [Indexed: 02/06/2023]
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40
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Association between pre-breeding metabolic profiles and reproductive performance in heifers and lactating dairy cows. Theriogenology 2019; 131:79-88. [PMID: 30959440 DOI: 10.1016/j.theriogenology.2019.03.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 03/09/2019] [Accepted: 03/20/2019] [Indexed: 01/25/2023]
Abstract
Lactating cows and nulliparous heifers are in distinctive and unique physiological conditions when they are approaching the planned time of breeding, at approximately 60 days in milk and 13-15 months of age, respectively. This study aimed to profile the metabolic milieu in heifers (N = 14) and lactating cows (N = 15) in the weeks leading up to planned time of breeding. All cows were followed for a period of 15 weeks, from 3 weeks pre-calving to 12 weeks post-calving, while heifers were monitored for a period of 4 weeks leading up to the tentative week of breeding (pre-breeding period). For data analysis, we further divided cows into primiparous (N = 8) and multiparous (N = 7) cows owing to the significant difference in their milk yield. Assessment of reproductive performance showed that primiparous and multiparous cows tended to have lower pregnancy rates compared to heifers (P < 0.1). Plasma concentrations of β-hydroxybutyric acid were about 2-fold higher in multiparous cows than those of heifers in the week leading up to planned time of breeding (P < 0.05). Total bile acid levels during the pre-breeding period were higher in all lactating cows compared to heifers (P < 0.05) and glucose levels were lower in lactating cows (P < 0.05). Triglyceride concentrations were lowest in multiparous cows compared to both primiparous cows and nulliparous heifers (P < 0.05). In addition, lactating cows had higher concentrations of total-cholesterol and the high-density lipoprotein and low-density lipoprotein compared to heifers (P < 0.05). Conversely, concentrations of very low-density lipoprotein were lower in multiparous cows than primiparous cows and nulliparous heifers (P < 0.05). There were no differences in plasma glutathione levels, as measured by liquid chromatography-tandem mass spectrometry, between the groups, but the ferric reducing ability of plasma was higher in lactating cows compared to heifers (P < 0.05). These data establish the differences in the profile of metabolic and oxidative markers during the period approaching planned time of breeding in lactating cows compared to nulliparous heifers. As certain metabolites in the plasma have been shown to be represented in the ovarian follicular microenvironment, the unique profiles may influence reproductive performance in dairy cattle in different physiological stages.
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41
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Rat mRNA expression profiles associated with inhibition of ischemic acute kidney injury by losartan. Biosci Rep 2019; 39:BSR20181774. [PMID: 30877184 PMCID: PMC6454018 DOI: 10.1042/bsr20181774] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 03/01/2019] [Accepted: 03/14/2019] [Indexed: 12/15/2022] Open
Abstract
Objective: Losartan was reported to inhibit the progression of acute kidney injury (AKI), but little is known about the underlying pharmacological mechanisms. In the present study, the mRNA expression profiles in ischemic AKI rat kidney altered by losartan treatment were analyzed by next-generation deep sequencing technology.Methods: Ischemia and reperfusion treatment was applied to induce AKI in Sprague-Dawley (SD) rats. The urea and creatinine contents in rat blood were measured. H&E staining was performed to evaluate the histological alteration of rat kidney tissues under a microscope. The TUNEL method was applied to analyze apoptosis in rat kidney tissues. The mRNA profiles in rat kidney were analyzed using next-generation deep sequencing. Differential gene expression was confirmed by quantitative qRT-PCR.Results: The rat model of AKI induced by ischemia and reperfusion showed significant increases in urea and creatinine levels, accompanied by a disrupted kidney tubular structure and renal cell apoptosis. Losartan treatment effectively inhibited the changes in urea and creatinine, tubular structure, and apoptosis in AKI rat kidney. A large number of mRNAs were found to be differentially expressed in the kidneys of AKI rats treated with losartan, which are involved in multiple processes and signaling pathways. The expression of nine differentially expressed genes such as monocyte chemoattractant protein-1 (CCL2) and suppressor of cytokine signaling 3 (SOCS3) was confirmed by qRT-PCR and Western blot.Conclusion: Losartan caused significant alterations in the gene expression profile in AKI rat kidney, which mediated its anti-AKI effects.
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Sarode GV, Kim K, Kieffer DA, Shibata NM, Litwin T, Czlonkowska A, Medici V. Metabolomics profiles of patients with Wilson disease reveal a distinct metabolic signature. Metabolomics 2019; 15:43. [PMID: 30868361 PMCID: PMC6568258 DOI: 10.1007/s11306-019-1505-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 03/04/2019] [Indexed: 01/05/2023]
Abstract
INTRODUCTION Wilson disease (WD) is characterized by excessive intracellular copper accumulation in liver and brain due to defective copper biliary excretion. With highly varied phenotypes and a lack of biomarkers for the different clinical manifestations, diagnosis and treatment can be difficult. OBJECTIVE The aim of the present study was to analyze serum metabolomics profiles of patients with Wilson disease compared to healthy subjects, with the goal of identifying differentially abundant metabolites as potential biomarkers for this condition. METHODS Hydrophilic interaction liquid chromatography-quadrupole time of flight mass spectrometry was used to evaluate the untargeted serum metabolome of 61 patients with WD (26 hepatic and 25 neurologic subtypes, 10 preclinical) compared to 15 healthy subjects. We conducted analysis of covariance with potential confounders (body mass index, age, sex) as covariates and partial least-squares analysis. RESULTS After adjusting for clinical covariates and multiple testing, we identified 99 significantly different metabolites (FDR < 0.05) between WD and healthy subjects. Subtype comparisons also revealed significantly different metabolites compared to healthy subjects: WD hepatic subtype (67), WD neurologic subtype (57), WD hepatic-neurologic combined (77), and preclinical (36). Pathway analysis revealed these metabolites are involved in amino acid metabolism, the tricarboxylic acid cycle, choline metabolism, and oxidative stress. CONCLUSIONS Patients with WD are characterized by a distinct metabolomics profile providing new insights into WD pathogenesis and identifying new potential diagnostic biomarkers.
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Affiliation(s)
- Gaurav V Sarode
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of California Davis, 4150 V Street, Suite 3500, Sacramento, CA, 95817, USA
| | - Kyoungmi Kim
- Division of Biostatistics, Department of Public Health Sciences, University of California Davis, Davis, CA, USA
| | - Dorothy A Kieffer
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of California Davis, 4150 V Street, Suite 3500, Sacramento, CA, 95817, USA
| | - Noreene M Shibata
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of California Davis, 4150 V Street, Suite 3500, Sacramento, CA, 95817, USA
| | - Tomas Litwin
- Department of Neurology, Institute of Psychiatry and Neurology, Warsaw, Poland
| | - Anna Czlonkowska
- Department of Neurology, Institute of Psychiatry and Neurology, Warsaw, Poland
| | - Valentina Medici
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of California Davis, 4150 V Street, Suite 3500, Sacramento, CA, 95817, USA.
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Lin HC, Li CC, Yang YC, Chiu TH, Liu KL, Lii CK, Chen HW. Andrographis paniculata diterpenoids and ethanolic extract inhibit TNFα-induced ICAM-1 expression in EA.hy926 cells. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2019; 52:157-167. [PMID: 30599895 DOI: 10.1016/j.phymed.2018.09.205] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 08/03/2018] [Accepted: 09/17/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Andrographis paniculata (A. paniculata), a traditional herb in Southeastern Asia, is used to treat inflammation-mediated diseases. PURPOSE The two major bioactive diterpenoids in A. paniculata are andrographolide (AND) and 14-deoxy-11,12-didehydroandrographolide (deAND). Because of the anti-inflammatory evidence for AND, we hypothesized that deAND might possess similar potency for inhibiting monocyte adhesion to the vascular endothelium, which is a critical event for atherosclerotic lesion formation. MATERIAL In the present study, we used 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay to determine cell viability. We evaluated the production of intracellular reactive oxygen species (ROS) by using DCFDA assay. We assayed the protein expression by using Western blot analysis, the mRNA expression by using RT-PCR, and the nuclear protein-DNA binding activity by using EMSA. RESULTS We showed that pretreatment of EA.hy926 cells with A. paniculata ethanolic extract (APE), deAND, and AND significantly inhibited TNFα-induced ICAM-1 protein and mRNA expression, ICAM-1 promoter activity, and monocyte adhesion. TNFα-stimulated IKKβ phosphorylation, IκBα phosphorylation and degradation, p65 nuclear translocation, and NFκB nuclear protein-DNA binding activity were attenuated by pretreatment with APE, deAND, and AND. APE, deAND, and AND attenuated TNFα-induced Src phosphorylation and membrane translocation of the NOX subunits p47phox and p67phox. Both APE and AND induced protein expression of heme oxygenase 1 and the glutamate cysteine ligase modifier subunit and enhanced glutathione content. Pretreatment with AND and deAND inhibited TNFα-induced ROS generation. CONCLUSION These results suggest that the mechanism by which APE, deAND, and AND down-regulates TNFα-induced ICAM-1 expression in EA.hy926 cells is via attenuation of activation of the IKK/IκB/NFκB pathway.
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Affiliation(s)
- Hung-Chih Lin
- Division of Neonatology, College of Medicine and Department of Pediatrics, Children's Hospital of China Medical University and China Medical University Hospital, Taichung 404, Taiwan
| | - Chien-Chun Li
- Department of Nutrition, Chung Shan Medical University, Taichung 402, Taiwan; Department of Nutrition, Chung Shan Medical University Hospital, Taichung 402, Taiwan
| | - Ya-Chen Yang
- Department of Food Nutrition and Health Biotechnology, Asia University, Taichung 413, Taiwan
| | - Tzu-Hsuan Chiu
- Department of Nutrition, China Medical University, Taichung 404, Taiwan
| | - Kai-Li Liu
- Department of Nutrition, Chung Shan Medical University, Taichung 402, Taiwan; Department of Nutrition, Chung Shan Medical University Hospital, Taichung 402, Taiwan
| | - Chong-Kuei Lii
- Department of Food Nutrition and Health Biotechnology, Asia University, Taichung 413, Taiwan; Department of Nutrition, China Medical University, Taichung 404, Taiwan.
| | - Haw-Wen Chen
- Department of Nutrition, China Medical University, Taichung 404, Taiwan.
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44
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Glycyrrhizic acid improving the liver protective effect by restoring the composition of Lactobacillus. J Funct Foods 2019. [DOI: 10.1016/j.jff.2018.11.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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45
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Lian G, Gnanaprakasam JNR, Wang T, Wu R, Chen X, Liu L, Shen Y, Yang M, Yang J, Chen Y, Vasiliou V, Cassel TA, Green DR, Liu Y, Fan TWM, Wang R. Glutathione de novo synthesis but not recycling process coordinates with glutamine catabolism to control redox homeostasis and directs murine T cell differentiation. eLife 2018; 7:e36158. [PMID: 30198844 PMCID: PMC6152796 DOI: 10.7554/elife.36158] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 09/09/2018] [Indexed: 12/25/2022] Open
Abstract
Upon antigen stimulation, T lymphocytes undergo dramatic changes in metabolism to fulfill the bioenergetic, biosynthetic and redox demands of proliferation and differentiation. Glutathione (GSH) plays an essential role in controlling redox balance and cell fate. While GSH can be recycled from Glutathione disulfide (GSSG), the inhibition of this recycling pathway does not impact GSH content and murine T cell fate. By contrast, the inhibition of the de novo synthesis of GSH, by deleting either the catalytic (Gclc) or the modifier (Gclm) subunit of glutamate-cysteine ligase (Gcl), dampens intracellular GSH, increases ROS, and impact T cell differentiation. Moreover, the inhibition of GSH de novo synthesis dampened the pathological progression of experimental autoimmune encephalomyelitis (EAE). We further reveal that glutamine provides essential precursors for GSH biosynthesis. Our findings suggest that glutamine catabolism fuels de novo synthesis of GSH and directs the lineage choice in T cells.
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Affiliation(s)
- Gaojian Lian
- Center for Childhood Cancer and Blood Diseases, Hematology, Oncology and BMThe Research Institute at Nationwide Children's Hospital, Ohio State UniversityColumbusUnited States
- Medical Research CenterUniversity of South ChinaHengyang, Hunan ProvinceChina
| | - JN Rashida Gnanaprakasam
- Center for Childhood Cancer and Blood Diseases, Hematology, Oncology and BMThe Research Institute at Nationwide Children's Hospital, Ohio State UniversityColumbusUnited States
| | - Tingting Wang
- Center for Childhood Cancer and Blood Diseases, Hematology, Oncology and BMThe Research Institute at Nationwide Children's Hospital, Ohio State UniversityColumbusUnited States
| | - Ruohan Wu
- Center for Childhood Cancer and Blood Diseases, Hematology, Oncology and BMThe Research Institute at Nationwide Children's Hospital, Ohio State UniversityColumbusUnited States
| | - Xuyong Chen
- Center for Childhood Cancer and Blood Diseases, Hematology, Oncology and BMThe Research Institute at Nationwide Children's Hospital, Ohio State UniversityColumbusUnited States
| | - Lingling Liu
- Center for Childhood Cancer and Blood Diseases, Hematology, Oncology and BMThe Research Institute at Nationwide Children's Hospital, Ohio State UniversityColumbusUnited States
| | - Yuqing Shen
- Center for Childhood Cancer and Blood Diseases, Hematology, Oncology and BMThe Research Institute at Nationwide Children's Hospital, Ohio State UniversityColumbusUnited States
| | - Mao Yang
- Department of ImmunologySt. Jude Children’s Research HospitalMemphisUnited States
| | - Jun Yang
- Department of SurgerySt. Jude Children’s Research HospitalMemphisUnited States
| | - Ying Chen
- Department of Environmental Health Sciences, Yale School of Public HealthYale UniversityNew HavenUnited States
| | - Vasilis Vasiliou
- Department of Environmental Health Sciences, Yale School of Public HealthYale UniversityNew HavenUnited States
| | - Teresa A Cassel
- Department of Toxicology and Cancer BiologyUniversity of KentuckyLexingtonUnited States
- Markey Cancer CenterUniversity of KentuckyLexingtonUnited States
- Center for Environmental and Systems BiochemistryUniversity of KentuckyLexingtonUnited States
| | - Douglas R Green
- Department of ImmunologySt. Jude Children’s Research HospitalMemphisUnited States
| | - Yusen Liu
- Center for Perinatal ResearchThe Research Institute at Nationwide Children's Hospital, Ohio State UniversityColumbusOhio, United States
| | - Teresa WM Fan
- Department of Toxicology and Cancer BiologyUniversity of KentuckyLexingtonUnited States
- Markey Cancer CenterUniversity of KentuckyLexingtonUnited States
- Center for Environmental and Systems BiochemistryUniversity of KentuckyLexingtonUnited States
| | - Ruoning Wang
- Center for Childhood Cancer and Blood Diseases, Hematology, Oncology and BMThe Research Institute at Nationwide Children's Hospital, Ohio State UniversityColumbusUnited States
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Kästner C, Saloga PEJ, Thünemann AF. Kinetic monitoring of glutathione-induced silver nanoparticle disintegration. NANOSCALE 2018; 10:11485-11490. [PMID: 29888371 DOI: 10.1039/c8nr02369g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We report on etching of polyacrylic acid-stabilised silver nanoparticles in the presence of glutathione (GSH). The initial particles with a radius of 3.2 nm and consisting of ∼8100 silver atoms dissolve in a two-step reaction mechanism while in parallel smaller silver particles with a radius of 0.65 nm and consisting of 60 to 70 silver atoms were formed. The kinetics of the etching of the initial particles, accompanied by formation of smaller silver particles was interpreted based on in situ, time-resolved small-angle X-ray scattering (SAXS) experiments.
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Affiliation(s)
- Claudia Kästner
- Federal Institute for Materials Research and Testing (BAM), Unter den Eichen 87, 12205 Berlin, Germany.
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47
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Schuster S, Cabrera D, Arrese M, Feldstein AE. Triggering and resolution of inflammation in NASH. Nat Rev Gastroenterol Hepatol 2018; 15:349-364. [PMID: 29740166 DOI: 10.1038/s41575-018-0009-6] [Citation(s) in RCA: 521] [Impact Index Per Article: 86.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Nonalcoholic steatohepatitis (NASH) is considered the progressive form of nonalcoholic fatty liver disease (NAFLD) and is characterized by liver steatosis, inflammation, hepatocellular injury and different degrees of fibrosis. A central issue in this field relates to the identification of those factors that trigger inflammation, thus fuelling the transition from nonalcoholic fatty liver to NASH. These triggers of liver inflammation might have their origins outside the liver (such as in adipose tissue or the gut) as well as inside the organ (for instance, lipotoxicity, innate immune responses, cell death pathways, mitochondrial dysfunction and endoplasmic reticulum stress), both of which contribute to NASH development. In this Review, we summarize the currently available information on the key upstream triggers of inflammation in NASH. We further delineate the mechanisms by which liver inflammation is resolved and the implications of a defective pro-resolution process. A better knowledge of these mechanisms should help to design targeted therapies able to halt or reverse disease progression.
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Affiliation(s)
- Susanne Schuster
- Department of Pediatrics, University of California, San Diego, CA, USA
| | - Daniel Cabrera
- Department of Gastroenterology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.,Departamento de Ciencias Químicas y Biológicas, Facultad de Salud, Universidad Bernardo O Higgins, Santiago, Chile
| | - Marco Arrese
- Department of Gastroenterology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.,Centre for Aging and Regeneration (CARE), Department of Cellular and Molecular Biology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ariel E Feldstein
- Department of Pediatrics, University of California, San Diego, CA, USA.
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Feng Q, Liu W, Baker SS, Li H, Chen C, Liu Q, Tang S, Guan L, Tsompana M, Kozielski R, Baker RD, Peng J, Liu P, Zhu R, Hu Y, Zhu L. Multi-targeting therapeutic mechanisms of the Chinese herbal medicine QHD in the treatment of non-alcoholic fatty liver disease. Oncotarget 2018; 8:27820-27838. [PMID: 28416740 PMCID: PMC5438611 DOI: 10.18632/oncotarget.15482] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 02/08/2017] [Indexed: 02/06/2023] Open
Abstract
Beneficial effects of the Chinese herbal medicine Qushi Huayu Decoction (QHD) were observed with non-alcoholic fatty liver disease (NAFLD) patients and animal models. The impact of QHD or its active components (geniposide and chlorogenic acid, GC) on NAFLD liver transcriptome and gut microbiota was examined with NAFLD rats. Increased expression for genes required for glutathione production and decreased expression for genes required for lipid synthesis was observed in NAFLD livers treated with QHD and GC. GC treatment decreased serum LPS, which could be explained by reduced mucosal damage in the colon of GC-treated rats. Further, our data suggest an increased abundance of Treg-inducing bacteria that stimulated the Treg activity in GC treated colon, which in turn down-regulated inflammatory signals, improved gut barrier function and consequently reduced hepatic exposure to microbial products. Our study suggests that QHD simultaneously enhanced the hepatic anti-oxidative mechanism, decreased hepatic lipid synthesis, and promoted the regulatory T cell inducing microbiota in the gut.
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Affiliation(s)
- Qin Feng
- Institute of Liver Disease, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Digestive Diseases and Nutrition Center, Women and Children's Hospital of Buffalo, Buffalo, NY, USA.,Department of Pediatrics, The State University of New York at Buffalo, Buffalo, New York, USA
| | - Wensheng Liu
- Digestive Diseases and Nutrition Center, Women and Children's Hospital of Buffalo, Buffalo, NY, USA.,Department of Pediatrics, The State University of New York at Buffalo, Buffalo, New York, USA
| | - Susan S Baker
- Digestive Diseases and Nutrition Center, Women and Children's Hospital of Buffalo, Buffalo, NY, USA.,Department of Pediatrics, The State University of New York at Buffalo, Buffalo, New York, USA
| | - Hongshan Li
- Ningbo No.2 Hospital, Ningbo, Zhejiang Province, China
| | - Cheng Chen
- Institute of Liver Disease, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Qian Liu
- Institute of Liver Disease, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Shijie Tang
- Department of Bioinformatics, Tongji University, Shanghai, China
| | - Lingyu Guan
- Department of Bioinformatics, Tongji University, Shanghai, China
| | - Maria Tsompana
- Center of Excellence in Bioinformatics and Life Sciences, The State University of New York at Buffalo, Buffalo, New York, USA
| | - Rafal Kozielski
- Women and Children's Hospital of Buffalo, Buffalo, NY, USA.,Department of Pathology, The State University of New York at Buffalo, Buffalo, New York, USA
| | - Robert D Baker
- Digestive Diseases and Nutrition Center, Women and Children's Hospital of Buffalo, Buffalo, NY, USA.,Department of Pediatrics, The State University of New York at Buffalo, Buffalo, New York, USA
| | - Jinghua Peng
- Institute of Liver Disease, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ping Liu
- Institute of Liver Disease, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ruixin Zhu
- Department of Bioinformatics, Tongji University, Shanghai, China
| | - Yiyang Hu
- Institute of Liver Disease, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lixin Zhu
- Digestive Diseases and Nutrition Center, Women and Children's Hospital of Buffalo, Buffalo, NY, USA.,Department of Pediatrics, The State University of New York at Buffalo, Buffalo, New York, USA.,Institute of Digestive Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Espinosa-Díez C, Miguel V, Vallejo S, Sánchez FJ, Sandoval E, Blanco E, Cannata P, Peiró C, Sánchez-Ferrer CF, Lamas S. Role of glutathione biosynthesis in endothelial dysfunction and fibrosis. Redox Biol 2018; 14:88-99. [PMID: 28888203 PMCID: PMC5596265 DOI: 10.1016/j.redox.2017.08.019] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 08/22/2017] [Accepted: 08/24/2017] [Indexed: 12/12/2022] Open
Abstract
Glutathione (GSH) biosynthesis is essential for cellular redox homeostasis and antioxidant defense. The rate-limiting step requires glutamate-cysteine ligase (GCL), which is composed of the catalytic (GCLc) and the modulatory (GCLm) subunits. To evaluate the contribution of GCLc to endothelial function we generated an endothelial-specific Gclc haplo-insufficient mouse model (Gclc e/+ mice). In murine lung endothelial cells (MLEC) derived from these mice we observed a 50% reduction in GCLc levels compared to lung fibroblasts from the same mice. MLEC obtained from haplo-insufficient mice showed significant reduction in GSH levels as well as increased basal and stimulated ROS levels, reduced phosphorylation of eNOS (Ser 1177) and increased eNOS S-glutathionylation, compared to MLEC from wild type (WT) mice. Studies in mesenteric arteries demonstrated impaired endothelium-dependent vasodilation in Gclc(e/+) male mice, which was corrected by pre-incubation with GSH-ethyl-ester and BH4. To study the contribution of endothelial GSH synthesis to renal fibrosis we employed the unilateral ureteral obstruction model in WT and Gclc(e/+) mice. We observed that obstructed kidneys from Gclc(e/+) mice exhibited increased deposition of fibrotic markers and reduced Nrf2 levels. We conclude that the preservation of endothelial GSH biosynthesis is not only critical for endothelial function but also in anti-fibrotic responses.
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Affiliation(s)
- Cristina Espinosa-Díez
- Department of Cell Biology and Immunology, Centro de Biología Molecular "Severo Ochoa", (CSIC-UAM), Madrid, Spain
| | - Verónica Miguel
- Department of Cell Biology and Immunology, Centro de Biología Molecular "Severo Ochoa", (CSIC-UAM), Madrid, Spain
| | - Susana Vallejo
- Department of Pharmacology, Faculty of Medicine, Universidad Autónoma de Madrid and Instituto de Investigación Sanitaria Hospital Universitario La Paz (IdiPAZ), Spain
| | - Francisco J Sánchez
- Department of Cell Biology and Immunology, Centro de Biología Molecular "Severo Ochoa", (CSIC-UAM), Madrid, Spain
| | - Elena Sandoval
- Department of Cell Biology and Immunology, Centro de Biología Molecular "Severo Ochoa", (CSIC-UAM), Madrid, Spain
| | - Eva Blanco
- Department of Cell Biology and Immunology, Centro de Biología Molecular "Severo Ochoa", (CSIC-UAM), Madrid, Spain
| | - Pablo Cannata
- Department of Pathology, Instituto de Investigaciones Sanitarias-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Spain
| | - Concepción Peiró
- Department of Pharmacology, Faculty of Medicine, Universidad Autónoma de Madrid and Instituto de Investigación Sanitaria Hospital Universitario La Paz (IdiPAZ), Spain
| | - Carlos F Sánchez-Ferrer
- Department of Pharmacology, Faculty of Medicine, Universidad Autónoma de Madrid and Instituto de Investigación Sanitaria Hospital Universitario La Paz (IdiPAZ), Spain
| | - Santiago Lamas
- Department of Cell Biology and Immunology, Centro de Biología Molecular "Severo Ochoa", (CSIC-UAM), Madrid, Spain.
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50
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Arizuka N, Murakami T, Suzuki K. The effect of β-caryophyllene on nonalcoholic steatohepatitis. J Toxicol Pathol 2017; 30:263-273. [PMID: 29097836 PMCID: PMC5660948 DOI: 10.1293/tox.2017-0018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 05/29/2017] [Indexed: 12/27/2022] Open
Abstract
The pathogenesis of nonalcoholic steatohepatitis (NASH) is not fully understood, but many studies have suggested that oxidative stress plays a key role. The methionine- and choline-deficient diet (MCD) administration model can reproduce histopathological features of human NASH and is widely used for investigating NASH. C57BL/6J mice have been used in many studies, but strain differences in pathogenesis have not been sufficiently investigated. We administred MCD to two mouse strains and then compared difference between strains and investigated the effects of β-caryophyllene (BCP), which possesses an antioxidant effect, on development and progression of NASH. ICR and C57BL/6J mice were administred a control diet, MCD, MCD containing 0.02% BCP, or MCD containing 0.2% BCP. After 4 or 8 weeks, mice were sacrificed. In both strains, MCD administration induced hepatic steatosis and inflammation. These lesions were more severe in C57BL/6J mice than ICR mice, and liver fibrosis was observed at 8 weeks in C57BL/6J mice. These changes were attenuated by BCP coadministration. The mRNA expression of monocyte chemotactic and activating factor (MCP)-1 and fibrosis-related factors increased in C57BL/6J mice, and these increases were reduced by BCP coadministration. The mRNA expression of antioxidant-related factors decreased in both strains, and these decreases were attenuated by BCP coadministration. Based on these results, the C57BL/6J mouse was a more suitable model for MCD-induced NASH than the ICR mouse. In addition, it was suggested that antioxidant effect of BCP might suppressed the damage of hepatocytes caused by oxidative stress and following inflammation and fibrosis.
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Affiliation(s)
- Naoya Arizuka
- Laboratory of Veterinary Toxicology, Cooperative Department
of Veterinary Medicine, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho,
Fuchu, Tokyo 183-8509, Japan
| | - Tomoaki Murakami
- Laboratory of Veterinary Toxicology, Cooperative Department
of Veterinary Medicine, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho,
Fuchu, Tokyo 183-8509, Japan
| | - Kazuhiko Suzuki
- Laboratory of Veterinary Toxicology, Cooperative Department
of Veterinary Medicine, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho,
Fuchu, Tokyo 183-8509, Japan
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