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Zhang Y, Lv J, Bai J, Zhang X, Wu G, Lei X, Li W, Zhang Z. TXNIP knockdown ameliorates hepatic ischemia/reperfusion injury by inhibiting apoptosis and improving mitochondrial dysfunction via HIF-1α. Mol Cell Biochem 2024:10.1007/s11010-024-05037-6. [PMID: 38872070 DOI: 10.1007/s11010-024-05037-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 05/14/2024] [Indexed: 06/15/2024]
Abstract
This study aims to investigate whether thioredoxin-interacting protein (TXNIP) regulates cell viability, cell apoptosis and mitochondrial damage in OGD/R-induced hepatocytes and to explore its underlying mechanism. AML12 cells were cultured under oxygen-glucose deprivation/reperfusion (OGD/R) conditions. TXNIP mRNA was detected using qRT-PCR, and the TXNIP protein was analyzed using western blotting. TXNIP-targeted short hairpin RNA (sh-TXNIP) lentivirus was used to infect the AML12 cells. CCK8 and TUNEL assays were applied to detect cell viability and apoptosis, respectively. DCFH-DA probe was used to determine reactive oxygen species (ROS) release level, and JC-1 probe was used to evaluate mitochondrial membrane potential (MMP). The localization of TXNIP and HIF-1α was observed using immunofluorescence. Our results showed that TXNIP markedly increased in AML12 cells treated with OGD/R. TXNIP knockdown increased cell viability and reduced cell apoptosis under OGD/R treatment. Moreover, MMP significantly increased and ROS release decreased in cells after TXNIP knockdown under OGD/R treatment. Additionally, TXNIP knockdown markedly increased the expression of HIF-1α. HIF-1α exhibited nuclear translocation following OGD/R induction, and TXNIP knockdown further promoted it. Compared with the OGD/R + sh-TXNIP group, HIF-1α agonist ML228 inhibited cell apoptosis and ROS release, and increased MMP. However, HIF-1α inhibitor PX478 had the opposite effect. In summary, TXNIP deletion ameliorated AML12 cell injury caused by OGD/R via promoting HIF-1α expression and nuclear translocation, manifested by inhibiting cell apoptosis and alleviating mitochondrial dysfunction.
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Affiliation(s)
- Yong Zhang
- Department of Anesthesia, The Second Affiliated Hospital of Xi'an Jiaotong University, No. 157, West 5th Road, Xi'an, 710004, Shaanxi, China
| | - Jianrui Lv
- Department of Anesthesia, The Second Affiliated Hospital of Xi'an Jiaotong University, No. 157, West 5th Road, Xi'an, 710004, Shaanxi, China
| | - Jian Bai
- Department of General Surgery, Xuanwu Hospital Capital Medical University, Beijing, 100032, China
| | - Xue Zhang
- Department of General Practice, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
| | - Gang Wu
- Department of Anesthesia, The Second Affiliated Hospital of Xi'an Jiaotong University, No. 157, West 5th Road, Xi'an, 710004, Shaanxi, China
| | - Xiaoming Lei
- Department of Anesthesia, The Second Affiliated Hospital of Xi'an Jiaotong University, No. 157, West 5th Road, Xi'an, 710004, Shaanxi, China
| | - Wei Li
- Department of Anesthesia, The Second Affiliated Hospital of Xi'an Jiaotong University, No. 157, West 5th Road, Xi'an, 710004, Shaanxi, China
| | - Zhenni Zhang
- Department of Anesthesia, The Second Affiliated Hospital of Xi'an Jiaotong University, No. 157, West 5th Road, Xi'an, 710004, Shaanxi, China.
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Zhang Y, Lv J, Bai J, Zhang X, Wu G, Lei X, Li W, Zhang Z. METTL3 Modulates TXNIP Expression to Affect the Activation of NLRP3 Inflammasome in Hepatic Cells Under Oxygen-Glucose Deprivation/Reperfusion Injury. Inflammation 2024; 47:1028-1040. [PMID: 38236385 DOI: 10.1007/s10753-023-01958-4] [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: 09/21/2023] [Revised: 12/20/2023] [Accepted: 12/23/2023] [Indexed: 01/19/2024]
Abstract
Hepatic ischemia-reperfusion (I/R) injury is still a major risk factor and unsolved problem in hepatic surgery. Methyltransferase-like 3 (METTL3), an important m6A-modified methylase, regulates inflammation and cellular stress response. In this study, we demonstrated the special role of METTL3 and its underlying mechanism in hepatic I/R injury. In the mouse model of hepatic I/R and in the oxygen-glucose deprivation and reoxygenation (OGD/R)-induced AML12 and NCTC 1469 cells, the expression of METTL3 was significantly upregulated. Inhibition of METTL3 in OGD/R-induced AML12 and NCTC 1469 cells both increased the cell viability, declined the cell apoptosis, and decreased the reactive oxygen species (ROS) and the release levels of interleukin-1β (IL-1β) and interleukin-18 (IL-18), diminishing NLRP3 and Caspase1-p20 expressions. Moreover, METTL3 positively modulated TXNIP expression in an m6A manner. TXNIP overexpression reversed the effects of METTL3 knockdown on OGD/R-induced injury in AML12 cells. Furthermore, inhibition of NLRP3 inflammasome activity contributed to the protective effects of TXNIP knockdown in OGD/R-induced AML12 cells. In conclusion, METTL3 knockdown alleviated OGD/R-induced hepatocyte injury, and the specific mechanism was associated with the inhibition of NLRP3 inflammasome activation, which was attributed to the reduction of TXNIP in an m6A-dependent manner.
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Affiliation(s)
- Yong Zhang
- Anesthesia Department, the Second Affiliated Hospital of Xi'an Jiaotong University, No. 157, West 5th Road, Xi'an, Shaanxi Province, 710004, China
| | - Jianrui Lv
- Anesthesia Department, the Second Affiliated Hospital of Xi'an Jiaotong University, No. 157, West 5th Road, Xi'an, Shaanxi Province, 710004, China
| | - Jian Bai
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Xue Zhang
- Department of General Practice, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Gang Wu
- Anesthesia Department, the Second Affiliated Hospital of Xi'an Jiaotong University, No. 157, West 5th Road, Xi'an, Shaanxi Province, 710004, China
| | - Xiaoming Lei
- Anesthesia Department, the Second Affiliated Hospital of Xi'an Jiaotong University, No. 157, West 5th Road, Xi'an, Shaanxi Province, 710004, China
| | - Wei Li
- Anesthesia Department, the Second Affiliated Hospital of Xi'an Jiaotong University, No. 157, West 5th Road, Xi'an, Shaanxi Province, 710004, China
| | - Zhenni Zhang
- Anesthesia Department, the Second Affiliated Hospital of Xi'an Jiaotong University, No. 157, West 5th Road, Xi'an, Shaanxi Province, 710004, China.
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Kim ME, Lee JS, Kim TW, Park MH, Kim DH. FoxO6-Mediated TXNIP Induces Lipid Accumulation in the Liver through NLRP3 Inflammasome Activation. Endocrinol Metab (Seoul) 2024; 39:127-139. [PMID: 38417829 PMCID: PMC10901662 DOI: 10.3803/enm.2023.1826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/02/2023] [Accepted: 11/13/2023] [Indexed: 03/01/2024] Open
Abstract
BACKGRUOUND Hepatic steatosis, which involves the excessive accumulation of lipid droplets in hepatocytes, presents a significant global health concern due to its association with obesity and metabolic disorders. Inflammation plays a crucial role in the progression of hepatic steatosis; however, the precise molecular mechanisms responsible for this process remain unknown. METHODS This study investigated the involvement of the nucleotide-binding oligomerization domain-like receptor pyrin domain-containing-3 (NLRP3) inflammasome and the forkhead box O6 (FoxO6) transcription factor in the pathogenesis of hepatic steatosis. We monitored the NLRP3 inflammasome and lipogenesis in mice overexpressing the constitutively active (CA)-FoxO6 allele and FoxO6-null mice. In an in vitro study, we administered palmitate to liver cells overexpressing CA-FoxO6 and measured changes in lipid metabolism. RESULTS We administered palmitate treatment to clarify the mechanisms through which FoxO6 activates cytokine interleukin (IL)-1β through the NLRP3 inflammasome. The initial experiments revealed that dephosphorylation led to palmitate-induced FoxO6 transcriptional activity. Further palmitate experiments showed increased expression of IL-1β and the hepatic NLRP3 inflammasome complex, including adaptor protein apoptotic speck protein containing a caspase recruitment domain (ASC) and pro-caspase-1. Furthermore, thioredoxin-interacting protein (TXNIP), a key regulator of cellular redox conditions upstream of the NLRP3 inflammasome, was induced by FoxO6 in the liver and HepG2 cells. CONCLUSION The findings of this study shed light on the molecular mechanisms underpinning the FoxO6-NLRP3 inflammasome axis in promoting inflammation and lipid accumulation in the liver.
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Affiliation(s)
- Mi Eun Kim
- Department of Life Sciences, Chosun University College of Natural Science, Gwangju, Korea
| | - Jun Sik Lee
- Department of Life Sciences, Chosun University College of Natural Science, Gwangju, Korea
| | - Tae Won Kim
- Department of Pharmacy, Kyungsung University College of Pharmacy, Busan, Korea
| | - Min Hi Park
- Department of Pharmacy, Kyungsung University College of Pharmacy, Busan, Korea
| | - Dae Hyun Kim
- Department of Food Science & Technology, Pusan National University College of Natural Resources and Life Science, Miryang, Korea
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Mauerhofer C, Grumet L, Schemmer P, Leber B, Stiegler P. Combating Ischemia-Reperfusion Injury with Micronutrients and Natural Compounds during Solid Organ Transplantation: Data of Clinical Trials and Lessons of Preclinical Findings. Int J Mol Sci 2021; 22:ijms221910675. [PMID: 34639016 PMCID: PMC8508760 DOI: 10.3390/ijms221910675] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/22/2021] [Accepted: 09/26/2021] [Indexed: 02/07/2023] Open
Abstract
Although extended donor criteria grafts bear a higher risk of complications such as graft dysfunction, the exceeding demand requires to extent the pool of potential donors. The risk of complications is highly associated with ischemia-reperfusion injury, a condition characterized by high loads of oxidative stress exceeding antioxidative defense mechanisms. The antioxidative properties, along with other beneficial effects like anti-inflammatory, antiapoptotic or antiarrhythmic effects of several micronutrients and natural compounds, have recently emerged increasing research interest resulting in various preclinical and clinical studies. Preclinical studies reported about ameliorated oxidative stress and inflammatory status, resulting in improved graft survival. Although the majority of clinical studies confirmed these results, reporting about improved recovery and superior organ function, others failed to do so. Yet, only a limited number of micronutrients and natural compounds have been investigated in a (large) clinical trial. Despite some ambiguous clinical results and modest clinical data availability, the vast majority of convincing animal and in vitro data, along with low cost and easy availability, encourage the conductance of future clinical trials. These should implement insights gained from animal data.
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Affiliation(s)
- Christina Mauerhofer
- Department of Science and Product Development, pro medico HandelsGmbH, Liebenauer Tangente 6, 8041 Graz, Austria; (C.M.); (L.G.)
| | - Lukas Grumet
- Department of Science and Product Development, pro medico HandelsGmbH, Liebenauer Tangente 6, 8041 Graz, Austria; (C.M.); (L.G.)
| | - Peter Schemmer
- Division of Transplant Surgery, Department of Surgery, Medical University, 8036 Graz, Austria; (P.S.); (B.L.)
| | - Bettina Leber
- Division of Transplant Surgery, Department of Surgery, Medical University, 8036 Graz, Austria; (P.S.); (B.L.)
| | - Philipp Stiegler
- Division of Transplant Surgery, Department of Surgery, Medical University, 8036 Graz, Austria; (P.S.); (B.L.)
- Correspondence: (P.S.)
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Noblet B, Benhamed F, O-Sullivan I, Zhang W, Filhoulaud G, Montagner A, Polizzi A, Marmier S, Burnol AF, Guilmeau S, Issad T, Guillou H, Bernard C, Unterman T, Postic C. Dual regulation of TxNIP by ChREBP and FoxO1 in liver. iScience 2021; 24:102218. [PMID: 33748706 PMCID: PMC7966993 DOI: 10.1016/j.isci.2021.102218] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 11/17/2020] [Accepted: 02/18/2021] [Indexed: 12/12/2022] Open
Abstract
TxNIP (Thioredoxin-interacting protein) is considered as a potential drug target for type 2 diabetes. Although TxNIP expression is correlated with hyperglycemia and glucotoxicity in pancreatic β cells, its regulation in liver cells has been less investigated. In the current study, we aim at providing a better understanding of Txnip regulation in hepatocytes in response to physiological stimuli and in the context of hyperglycemia in db/db mice. We focused on regulatory pathways governed by ChREBP (Carbohydrate Responsive Element Binding Protein) and FoxO1 (Forkhead box protein O1), transcription factors that play central roles in mediating the effects of glucose and fasting on gene expression, respectively. Studies using genetically modified mice reveal that hepatic TxNIP is up-regulated by both ChREBP and FoxO1 in liver cells and that its expression strongly correlates with fasting, suggesting a major role for this protein in the physiological adaptation to nutrient restriction.
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Affiliation(s)
- Benedicte Noblet
- Université de Paris, Institut Cochin, CNRS, INSERM, 75014 Paris, France
| | - Fadila Benhamed
- Université de Paris, Institut Cochin, CNRS, INSERM, 75014 Paris, France
| | - InSug O-Sullivan
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, University of Illinois at Chicago, Chicago, IL 60612
- Medical Research Service, Jesse Brown VA Medical Center, Chicago, IL 60612, USA
| | - Wenwei Zhang
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, University of Illinois at Chicago, Chicago, IL 60612
- Medical Research Service, Jesse Brown VA Medical Center, Chicago, IL 60612, USA
| | - Gaëlle Filhoulaud
- Université de Paris, Institut Cochin, CNRS, INSERM, 75014 Paris, France
| | - Alexandra Montagner
- Toxalim, Université de Toulouse, INRA, ENVT, INP-Purpan, UPS, Toulouse 31027, France
| | - Arnaud Polizzi
- Toxalim, Université de Toulouse, INRA, ENVT, INP-Purpan, UPS, Toulouse 31027, France
| | - Solenne Marmier
- Université de Paris, Institut Cochin, CNRS, INSERM, 75014 Paris, France
| | | | - Sandra Guilmeau
- Université de Paris, Institut Cochin, CNRS, INSERM, 75014 Paris, France
| | - Tarik Issad
- Université de Paris, Institut Cochin, CNRS, INSERM, 75014 Paris, France
| | - Hervé Guillou
- Toxalim, Université de Toulouse, INRA, ENVT, INP-Purpan, UPS, Toulouse 31027, France
| | | | - Terry Unterman
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, University of Illinois at Chicago, Chicago, IL 60612
- Medical Research Service, Jesse Brown VA Medical Center, Chicago, IL 60612, USA
| | - Catherine Postic
- Université de Paris, Institut Cochin, CNRS, INSERM, 75014 Paris, France
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Domingues A, Jolibois J, Marquet de Rougé P, Nivet-Antoine V. The Emerging Role of TXNIP in Ischemic and Cardiovascular Diseases; A Novel Marker and Therapeutic Target. Int J Mol Sci 2021; 22:ijms22041693. [PMID: 33567593 PMCID: PMC7914816 DOI: 10.3390/ijms22041693] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/03/2021] [Accepted: 02/04/2021] [Indexed: 12/17/2022] Open
Abstract
Thioredoxin interacting protein (TXNIP) is a metabolism- oxidative- and inflammation-related marker induced in cardiovascular diseases and is believed to represent a possible link between metabolism and cellular redox status. TXNIP is a potential biomarker in cardiovascular and ischemic diseases but also a novel identified target for preventive and curative medicine. The goal of this review is to focus on the novelties concerning TXNIP. After an overview in TXNIP involvement in oxidative stress, inflammation and metabolism, the remainder of this review presents the clues used to define TXNIP as a new marker at the genetic, blood, or ischemic site level in the context of cardiovascular and ischemic diseases.
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Affiliation(s)
- Alison Domingues
- INSERM 1140, Innovative Therapies in Haemostasis, Faculty of Pharmacy, Université de Paris, 75006 Paris, France; (A.D.); (J.J.); (P.M.d.R.)
| | - Julia Jolibois
- INSERM 1140, Innovative Therapies in Haemostasis, Faculty of Pharmacy, Université de Paris, 75006 Paris, France; (A.D.); (J.J.); (P.M.d.R.)
| | - Perrine Marquet de Rougé
- INSERM 1140, Innovative Therapies in Haemostasis, Faculty of Pharmacy, Université de Paris, 75006 Paris, France; (A.D.); (J.J.); (P.M.d.R.)
| | - Valérie Nivet-Antoine
- INSERM 1140, Innovative Therapies in Haemostasis, Faculty of Pharmacy, Université de Paris, 75006 Paris, France; (A.D.); (J.J.); (P.M.d.R.)
- Clinical Biochemistry Department, Assistance Publique des Hôpitaux de Paris, Necker Hospital, 75015 Paris, France
- Correspondence:
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Seco-Cervera M, González-Cabo P, Pallardó FV, Romá-Mateo C, García-Giménez JL. Thioredoxin and Glutaredoxin Systems as Potential Targets for the Development of New Treatments in Friedreich's Ataxia. Antioxidants (Basel) 2020; 9:antiox9121257. [PMID: 33321938 PMCID: PMC7763308 DOI: 10.3390/antiox9121257] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/04/2020] [Accepted: 12/07/2020] [Indexed: 12/11/2022] Open
Abstract
The thioredoxin family consists of a small group of redox proteins present in all organisms and composed of thioredoxins (TRXs), glutaredoxins (GLRXs) and peroxiredoxins (PRDXs) which are found in the extracellular fluid, the cytoplasm, the mitochondria and in the nucleus with functions that include antioxidation, signaling and transcriptional control, among others. The importance of thioredoxin family proteins in neurodegenerative diseases is gaining relevance because some of these proteins have demonstrated an important role in the central nervous system by mediating neuroprotection against oxidative stress, contributing to mitochondrial function and regulating gene expression. Specifically, in the context of Friedreich’s ataxia (FRDA), thioredoxin family proteins may have a special role in the regulation of Nrf2 expression and function, in Fe-S cluster metabolism, controlling the expression of genes located at the iron-response element (IRE) and probably regulating ferroptosis. Therefore, comprehension of the mechanisms that closely link thioredoxin family proteins with cellular processes affected in FRDA will serve as a cornerstone to design improved therapeutic strategies.
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Affiliation(s)
- Marta Seco-Cervera
- Centre for Biomedical Research on Rare Diseases (CIBERER), 46010 Valencia, Spain; (M.S.-C.); (P.G.-C.); (F.V.P.)
- Department of Physiology, Faculty of Medicine and Dentistry, Universitat de València (UV), 46010 Valencia, Spain
- Biomedical Research Institute INCLIVA, 46010 Valencia, Spain
| | - Pilar González-Cabo
- Centre for Biomedical Research on Rare Diseases (CIBERER), 46010 Valencia, Spain; (M.S.-C.); (P.G.-C.); (F.V.P.)
- Department of Physiology, Faculty of Medicine and Dentistry, Universitat de València (UV), 46010 Valencia, Spain
- Biomedical Research Institute INCLIVA, 46010 Valencia, Spain
| | - Federico V. Pallardó
- Centre for Biomedical Research on Rare Diseases (CIBERER), 46010 Valencia, Spain; (M.S.-C.); (P.G.-C.); (F.V.P.)
- Department of Physiology, Faculty of Medicine and Dentistry, Universitat de València (UV), 46010 Valencia, Spain
- Biomedical Research Institute INCLIVA, 46010 Valencia, Spain
| | - Carlos Romá-Mateo
- Centre for Biomedical Research on Rare Diseases (CIBERER), 46010 Valencia, Spain; (M.S.-C.); (P.G.-C.); (F.V.P.)
- Department of Physiology, Faculty of Medicine and Dentistry, Universitat de València (UV), 46010 Valencia, Spain
- Biomedical Research Institute INCLIVA, 46010 Valencia, Spain
- Correspondence: (C.R.-M.); (J.L.G.-G.); Tel.: +34-963-864-646 (C.R.-M. & J.L.G.-G.)
| | - José Luis García-Giménez
- Centre for Biomedical Research on Rare Diseases (CIBERER), 46010 Valencia, Spain; (M.S.-C.); (P.G.-C.); (F.V.P.)
- Department of Physiology, Faculty of Medicine and Dentistry, Universitat de València (UV), 46010 Valencia, Spain
- Biomedical Research Institute INCLIVA, 46010 Valencia, Spain
- Correspondence: (C.R.-M.); (J.L.G.-G.); Tel.: +34-963-864-646 (C.R.-M. & J.L.G.-G.)
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Dai Y, Wang S, Chang S, Ren D, Shali S, Li C, Yang H, Huang Z, Ge J. M2 macrophage-derived exosomes carry microRNA-148a to alleviate myocardial ischemia/reperfusion injury via inhibiting TXNIP and the TLR4/NF-κB/NLRP3 inflammasome signaling pathway. J Mol Cell Cardiol 2020; 142:65-79. [PMID: 32087217 DOI: 10.1016/j.yjmcc.2020.02.007] [Citation(s) in RCA: 155] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 02/15/2020] [Accepted: 02/18/2020] [Indexed: 12/23/2022]
Abstract
BACKGROUND Reperfusion may cause injuries to the myocardium in ischemia situation. Emerging studies suggest that exosomes may serve as key mediators in myocardial ischemia/reperfusion (MI/R) injury. OBJECTIVE The study was conducted to figure out the mechanism of M2 macrophage-derived exosomes (M2-exos) in MI/R injury with the involvement of microRNA-148a (miR-148a). METHODS AND RESULTS M2 macrophages were prepared and M2-exos were collected and identified. Neonatal rat cardiomyocytes (NCMs) were extracted for in vitro hypoxia/reoxygenation (H/R) model establishment, while rat cardiac tissues were separated for in vivo MI/R model establishment. Differentially expressed miRNAs in NCMs and H/R-treated NCMs after M2-exos treatment were evaluated using microarray analysis. The target relation between miR-148a and thioredoxin-interacting protein (TXNIP) was identified using dual luciferase reporter gene assay. Gain- and loss- of function studies of miR-148a and TXNIP were performed to figure out their roles in MI/R injury. Meanwhile, the activation of the TLR4/NF-κB/NLRP3 inflammasome signaling pathway and pyroptosis of NCMs were evaluated. M2 macrophages carried miR-148a into NCMs. Over-expression of miR-148a enhanced viability of H/R-treated NCMs, reduced infarct size in vivo, and alleviated dysregulation of cardiac enzymes and Ca2+ overload in both models. miR-148a directly bound to the 3'-untranslated region (3'UTR) of TXNIP. Over-expressed TXNIP triggered the TLR4/NF-κB/NLRP3 signaling pathway activation and induced cell pyroptosis of NCMs, and the results were reproduced in in vivo studies. CONCLUSION This study demonstrated that M2-exos could carry miR-148a to mitigate MI/R injury via down-regulating TXNIP and inactivating the TLR4/NF-κB/NLRP3 inflammasome signaling pathway. This study may offer new insights into MI/R injury treatment.
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Affiliation(s)
- Yuxiang Dai
- Department of Cardiology, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Shanghai 200032, China
| | - Shen Wang
- Department of Cardiology, the Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou 310005, China
| | - Shufu Chang
- Department of Cardiology, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Shanghai 200032, China
| | - Daoyuan Ren
- Department of Cardiology, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Shanghai 200032, China
| | - Shalaimaiti Shali
- Department of Cardiology, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Shanghai 200032, China
| | - Chenguang Li
- Department of Cardiology, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Shanghai 200032, China
| | - Hongbo Yang
- Department of Cardiology, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Shanghai 200032, China
| | - Zheyong Huang
- Department of Cardiology, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Shanghai 200032, China
| | - Junbo Ge
- Department of Cardiology, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Shanghai 200032, China.
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Chen K, Lang H, Wang L, Liu K, Zhou Y, Mi M. S-Equol ameliorates insulin secretion failure through Chrebp/Txnip signaling via modulating PKA/PP2A activities. Nutr Metab (Lond) 2020; 17:7. [PMID: 31956333 PMCID: PMC6961363 DOI: 10.1186/s12986-020-0426-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 01/02/2020] [Indexed: 12/19/2022] Open
Abstract
Background S-Equol, produced from daidzein by gut microbiota, has been suggested as an potential anti-diabetic agent, but the underlying mechanisms remain unclear. Recent evidences demonstrated that carbohydrate response element-binding protein (Chrebp)/Thioredoxin-interacting protein (Txnip) signaling played central roles on diabetes progression, particularly in relation to the function maintenance and apoptosis of pancreatic β-cell. Here, we investigated the effects of S-Equol on β-cell function and Chrebp/Txnip signaling. Methods Zucker diabetic fatty rats were treated with racemic Equol (120 mg/kg.BW.d) for 6 weeks. The glucose and lipid metabolism were monitored during the supplementation, and the Chrebp and Txnip expression were measured by using Western blotting. INS-1 cells were incubated with high glucose (26.2 mM) with or without S-Equol (0.1 μM, 1 μM, 10 μM) for 48 h. Glucose-stimulated insulin secretion (GSIS) was evaluated by radioimmunoassay, and the apoptosis of INS-1 cells was analyzed using Annexin V-FITC/PI and TUNEL assay. The dual luciferase reporter assay, chromatin immunoprecipitation assay and Western-blotting followed by Chrebp small interfering RNAs were utilized to clarify the mechanism of transcriptional regulation of S-Equol on Chrebp/Txnip signaling and the activities of protein kinase A (PKA) and protein phophatase (PP2A) were also detected. Results In vivo, Equol supplementation delayed the onset of the hyperglycemia and hyperlipemia, ameliorated insulin secretion failure, enhanced GSIS in isolated islets, and significantly reduced Chrebp and Txnip expression in islets. In vitro, S-Equol treatment enhanced GSIS of high glucose cultured INS-1 cell, and reduced apoptosis of INS-1 cells were also observed. Moreover, S-Equol dramatically suppressed Txnip transcription, as evident by the reduction of Txnip protein and mRNA levels and decrease in the Txnip promoter-driven luciferase activity. Meanwhile, S-Equol significantly inhibited Chrebp/Mlx expression and decreased occupancy of Chrebp on the Txnip promoter, and combined with siChrebp, we confirmed that S-Equol improvement of insulin secretion was partially through the Chrebp/Txnip pathway. Furthermore, S-Equol significantly decrease nuclear translocation of Chrebp, which was related with the decrease activity of protein kinase A (PKA) and the increase activity of protein phophatase (PP2A). Conclusions S-Equol could ameliorate insulin secretion failure, which was dependent on the suppression of Chrebp/Txnip signaling via modulating PKA/PP2A activities.
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Affiliation(s)
- Ka Chen
- 1Research Center for Nutrition and Food Safety, Institute of Military Preventive Medicine, Third Military Medical University, Chongqing, 400038 People's Republic of China
| | - Hedong Lang
- 1Research Center for Nutrition and Food Safety, Institute of Military Preventive Medicine, Third Military Medical University, Chongqing, 400038 People's Republic of China
| | - Li Wang
- 1Research Center for Nutrition and Food Safety, Institute of Military Preventive Medicine, Third Military Medical University, Chongqing, 400038 People's Republic of China
| | - Kai Liu
- 1Research Center for Nutrition and Food Safety, Institute of Military Preventive Medicine, Third Military Medical University, Chongqing, 400038 People's Republic of China
| | - Yong Zhou
- 1Research Center for Nutrition and Food Safety, Institute of Military Preventive Medicine, Third Military Medical University, Chongqing, 400038 People's Republic of China.,Department of Clinic Nutrition, People's Hospital of Chongqing Banan District, Chongqing, 401320 People's Republic of China
| | - Mantian Mi
- 1Research Center for Nutrition and Food Safety, Institute of Military Preventive Medicine, Third Military Medical University, Chongqing, 400038 People's Republic of China
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10
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Targeting endothelial thioredoxin-interacting protein (TXNIP) protects from metabolic disorder-related impairment of vascular function and post-ischemic revascularisation. Angiogenesis 2020; 23:249-264. [PMID: 31900750 DOI: 10.1007/s10456-019-09704-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 12/14/2019] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Although thioredoxin-interacting protein (TXNIP) is involved in a variety of biological functions, the contribution of endothelial TXNIP has not been well-defined in regards to endothelial and vascular function or in post-ischemic revascularisation. We postulated that inhibition of endothelial TXNIP with siRNA or in a Cre-LoxP system could be involved in protection from high fat, high protein, low carbohydrate (HFHPLC) diet-induced oxidative stress and endothelial dysfunction, leading to vascular damage and impaired revascularisation in vivo. METHODS AND RESULTS To investigate the role of endothelial TXNIP, the TXNIP gene was deleted in endothelial cells using anti-TXNIP siRNA treatment or the Cre-LoxP system. Murine models were fed a HFHPLC diet, known to induce metabolic disorders. Endothelial TXNIP targeting resulted in protection against metabolic disorder-related endothelial oxidative stress and endothelial dysfunction. This protective effect mitigates media cell loss induced by metabolic disorders and hampered metabolic disorder-related vascular dysfunction assessed by aortic reactivity and distensibility. In aortic ring cultures, metabolic disorders impaired vessel sprouting and this alteration was alleviated by deletion of endothelial TXNIP. When subjected to ischemia, mice fed a HFHPLC diet exhibited defective post-ischemic angiogenesis and impaired blood flow recovery in hind limb ischemia. However, reducing endothelial TXNIP rescued metabolic disorder-related impairment of ischemia-induced revascularisation. CONCLUSION Collectively, these results show that targeting endothelial TXNIP in metabolic disorders is essential to maintaining endothelial function, vascular function and improving ischemia-induced revascularisation, making TXNIP a potential therapeutic target for therapy of vascular complications related to metabolic disorders.
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Zhang Y, Miao LS, Cai YM, He JX, Zhang ZN, Wu G, Zheng J. TXNIP knockdown alleviates hepatocyte ischemia reperfusion injury through preventing p38/JNK pathway activation. Biochem Biophys Res Commun 2018; 502:409-414. [PMID: 29852169 DOI: 10.1016/j.bbrc.2018.05.185] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 05/28/2018] [Indexed: 10/14/2022]
Abstract
Hepatic ischemia and reperfusion (I/R) injury is a major cause of liver damage during liver transplantation, resection surgery, shock, and trauma. It has been reported that TXNIP expression was upregulated in a rat model of hepatic I/R injury. However, the role of TXNIP in the hepatic I/R injury is little known. In our study, we investigated the biological role of TXNIP and its potential molecular mechanism in the human hepatic cell line (HL7702 cells). Using oxygen-glucose deprivation and reoxygenation (OGD/R) to create a cell model of hepatic I/R injury, we found that the mRNA and protein expression levels of TXNIP were upregulated in HL7702 cells exposed to OGD/R. TXNIP overexpression remarkably promoted OGD/R-induced cell apoptosis and lactate dehydrogenase (LDH) release, both of which were significantly decreased by TXNIP knockdown. The production of malondialdehyde (MDA) was also increased by TXNIP overexpression, but was reduced by TXNIP knockdown. Moreover, TXNIP overexpression significantly upregulated the phosphorylation of p38 and JNK, which was remarkably inhibited by TXNIP knockdown. Additionally, p38-specific inhibitor SB203580 abrogated the effect of TXNIP overexpression on OGD/R-induced cell injury. Taken together, these results indicated that TXNIP knockdown alleviated hepatocyte I/R injury through preventing p38/JNK pathway activation. Thus, TXNIP might offer a novel potential therapeutic target for the treatment of hepatic I/R injury.
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Affiliation(s)
- Yong Zhang
- Department of Anesthesiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
| | - Liang-Sheng Miao
- Department of Anesthesiology, Weinan Central Hospital, Weinan, Shaanxi Province, China
| | - Ying-Min Cai
- Department of Anesthesiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
| | - Jia-Xuan He
- Department of Anesthesiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
| | - Zhen-Ni Zhang
- Department of Anesthesiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
| | - Gang Wu
- Department of Anesthesiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China.
| | - Juan Zheng
- Department of Anesthesiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
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12
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Lacerda D, Ortiz V, Türck P, Campos-Carraro C, Zimmer A, Teixeira R, Bianchi S, de Castro AL, Schenkel PC, Belló-Klein A, Bassani VL, da Rosa Araujo AS. Stilbenoid pterostilbene complexed with cyclodextrin preserves left ventricular function after myocardial infarction in rats: possible involvement of thiol proteins and modulation of phosphorylated GSK-3β. Free Radic Res 2018; 52:988-999. [PMID: 30203709 DOI: 10.1080/10715762.2018.1506115] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Oxidative stress alters signalling pathways for survival and cell death favouring the adverse remodelling of postmyocardial remnant cardiomyocytes, promoting functional impairment. The administration of pterostilbene (PTS), a phytophenol with antioxidant potential, can promote cardioprotection and represents a therapeutic alternative in acute myocardial infarction (AMI). The present study aims to explore the effects of oral administration of PTS complexed with hydroxypropyl-β-cyclodextrin HPβCD (PTS:HPβCD complex) on the glutathione cycle, thiol protein activities and signalling pathways involving the protein kinase B (AKT) and glycogen synthase kinase-3β (GSK-3β) proteins in the left ventricle (LV) of infarcted rats. Animals were submitted to acute myocardial infarction through surgical ligation of the descending anterior branch of the left coronary artery and received over 8 days, by gavage, PTS:HPβCD complex at dose of 100 mg kg-1 day-1 (AMI + PTS group) or vehicle (aqueous solution with HPβCD) divided into Sham-operated (SHAM) and infarcted (AMI) groups. The results showed that the PBS: HPβCD complex decreased lipid peroxidation, prevented the decrease in thioredoxin reductase (TRxR) activity, and increased the activity of glutathione-S-transferase (GST) and glutaredoxin (GRx). Additionally, the expression of nuclear factor-erythroid two (Nrf2) and p-GSK-3β was increased, whereas the p-GSK-3β/GSK-3β ratio was reduced in the LV of the infarcted animals. Overall, the PTS:HPβCD complex modulates activity of thiol-dependent enzymes and induces to the expression of antioxidant proteins, improving systolic function and mitigating the adverse cardiac remodelling post infarction.
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Affiliation(s)
- Denise Lacerda
- a Programa de Pós-Graduação em Ciências Biológicas: Farmacologia e Terapêutica, Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil
| | - Vanessa Ortiz
- b Programa de Pós-Graduação em Ciências Biológicas: Fisiologia, Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil
| | - Patrick Türck
- b Programa de Pós-Graduação em Ciências Biológicas: Fisiologia, Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil
| | - Cristina Campos-Carraro
- b Programa de Pós-Graduação em Ciências Biológicas: Fisiologia, Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil
| | - Alexsandra Zimmer
- b Programa de Pós-Graduação em Ciências Biológicas: Fisiologia, Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil
| | - Rayane Teixeira
- b Programa de Pós-Graduação em Ciências Biológicas: Fisiologia, Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil
| | - Sara Bianchi
- c Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil
| | - Alexandre Luz de Castro
- b Programa de Pós-Graduação em Ciências Biológicas: Fisiologia, Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil.,d Instituto de Ciências Básicas (ICB), Universidade Federal do Rio Grande , Porto Alegre , Brazil
| | - Paulo Cavalheiro Schenkel
- b Programa de Pós-Graduação em Ciências Biológicas: Fisiologia, Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil
| | - Adriane Belló-Klein
- b Programa de Pós-Graduação em Ciências Biológicas: Fisiologia, Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil
| | - Valquiria Linck Bassani
- c Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil
| | - Alex Sander da Rosa Araujo
- a Programa de Pós-Graduação em Ciências Biológicas: Farmacologia e Terapêutica, Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil.,b Programa de Pós-Graduação em Ciências Biológicas: Fisiologia, Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil
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13
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Liang Y, Che X, Zhao Q, Darwazeh R, Zhang H, Jiang D, Zhao J, Xiang X, Qin W, Liu L, He Z. Thioredoxin-interacting protein mediates mitochondrion-dependent apoptosis in early brain injury after subarachnoid hemorrhage. Mol Cell Biochem 2018; 450:149-158. [PMID: 29905889 DOI: 10.1007/s11010-018-3381-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 06/11/2018] [Indexed: 01/31/2023]
Abstract
Early brain injury (EBI) was reported to be the primary cause of high mortality and poor outcomes in subarachnoid hemorrhage (SAH) patients, and apoptosis is regarded as the most important physiopathologic mechanism during EBI. Recently, our team found that thioredoxin-interacting protein (TXNIP) links endoplasmic reticulum stress (ER stress) to neuronal apoptosis and aggravates EBI. However, the other underlying mechanisms remain unknown. Mitochondria are considered to be the central points in integrating apoptotic cell death. However, whether crosstalk between TXNIP and the mitochondria-mediated intrinsic apoptotic pathway is effective on EBI has not been previously reported. Therefore, we created an endovascular perforation SAH model in Sprague-Dawley rats to determine the possible mechanism. We found that TXNIP expression in apoptotic neurons significantly increased in the SAH group compared with the sham group. In addition, increased TXNIP expression was accompanied by remarkable changes in mitochondrial-related antiapoptotic and proapoptotic factors. Furthermore, resveratrol (RES, a TXNIP inhibitor) administration significantly downregulated the expression of TXNIP and mitochondria-related proapoptotic factors. Additionally, it attenuated SAH prognostic indicators, such as brain edema, blood-brain barrier permeability, and neurological deficits. Therefore, our study further confirms that TXNIP may participate in neuronal apoptosis through the mitochondrial signaling pathway and that TXNIP may be a target for SAH treatment.
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Affiliation(s)
- Yidan Liang
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xudong Che
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qing Zhao
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Rami Darwazeh
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Hongxia Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Dengzhi Jiang
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jun Zhao
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiang Xiang
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Wang Qin
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Liu Liu
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhaohui He
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
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Hamano M, Haraguchi Y, Sayano T, Zyao C, Arimoto Y, Kawano Y, Moriyasu K, Udono M, Katakura Y, Ogawa T, Kato H, Furuya S. Enhanced vulnerability to oxidative stress and induction of inflammatory gene expression in 3-phosphoglycerate dehydrogenase-deficient fibroblasts. FEBS Open Bio 2018; 8:914-922. [PMID: 29928571 PMCID: PMC5986034 DOI: 10.1002/2211-5463.12429] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 03/04/2018] [Accepted: 04/03/2018] [Indexed: 02/02/2023] Open
Abstract
l‐Serine (l‐Ser) is a necessary precursor for the synthesis of proteins, lipids, glycine, cysteine, d‐serine, and tetrahydrofolate metabolites. Low l‐Ser availability activates stress responses and cell death; however, the underlying molecular mechanisms remain unclear. l‐Ser is synthesized de novo from 3‐phosphoglycerate with 3‐phosphoglycerate dehydrogenase (Phgdh) catalyzing the first reaction step. Here, we show that l‐Ser depletion raises intracellular H2O2 levels and enhances vulnerability to oxidative stress in Phgdh‐deficient mouse embryonic fibroblasts. These changes were associated with reduced total glutathione levels. Moreover, levels of the inflammatory markers thioredoxin‐interacting protein and prostaglandin‐endoperoxide synthase 2 were upregulated under l‐Ser‐depleted conditions; this was suppressed by the addition of N‐acetyl‐l‐cysteine. Thus, intracellular l‐Ser deficiency triggers an inflammatory response via increased oxidative stress, and de novo l‐Ser synthesis suppresses oxidative stress damage and inflammation when the external l‐Ser supply is restricted.
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Affiliation(s)
- Momoko Hamano
- Laboratory of Functional Genomics and Metabolism Department of Innovative Science and Technology for Bio-industry Kyushu University Fukuoka Japan.,International College of Arts and Sciences Fukuoka Women's University Fukuoka Japan
| | - Yurina Haraguchi
- Department of Bioscience and Biotechnology Kyushu University Fukuoka Japan
| | - Tomoko Sayano
- Laboratory of Functional Genomics and Metabolism Department of Innovative Science and Technology for Bio-industry Kyushu University Fukuoka Japan.,Laboratory for Molecular Membrane Neuroscience RIKEN Brain Science Institute Wako, Saitama Japan
| | - Chong Zyao
- Department of Genetic Resources Technology Graduate School of Bioresource and Bioenvironmental Sciences Kyushu University Fukuoka Japan
| | - Yashiho Arimoto
- Department of Genetic Resources Technology Graduate School of Bioresource and Bioenvironmental Sciences Kyushu University Fukuoka Japan
| | - Yui Kawano
- Department of Bioscience and Biotechnology Kyushu University Fukuoka Japan
| | - Kazuki Moriyasu
- Department of Bioscience and Biotechnology Kyushu University Fukuoka Japan
| | - Miyako Udono
- Department of Genetic Resources Technology Graduate School of Bioresource and Bioenvironmental Sciences Kyushu University Fukuoka Japan
| | - Yoshinori Katakura
- Department of Bioscience and Biotechnology Kyushu University Fukuoka Japan.,Department of Genetic Resources Technology Graduate School of Bioresource and Bioenvironmental Sciences Kyushu University Fukuoka Japan
| | - Takuya Ogawa
- School of Pharmacy International University of Health and Welfare Tochigi Japan
| | - Hisanori Kato
- Corporate Sponsored Research Program "Food for Life", Organization for Interdisciplinary Research Projects The University of Tokyo Japan
| | - Shigeki Furuya
- Laboratory of Functional Genomics and Metabolism Department of Innovative Science and Technology for Bio-industry Kyushu University Fukuoka Japan.,Department of Bioscience and Biotechnology Kyushu University Fukuoka Japan.,Department of Genetic Resources Technology Graduate School of Bioresource and Bioenvironmental Sciences Kyushu University Fukuoka Japan
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15
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Kang JW, Choi HS, Lee SM. Resolvin D1 attenuates liver ischaemia/reperfusion injury through modulating thioredoxin 2-mediated mitochondrial quality control. Br J Pharmacol 2018; 175:2441-2453. [PMID: 29569721 DOI: 10.1111/bph.14212] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 01/19/2018] [Accepted: 03/06/2018] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND AND PURPOSE Liver ischaemia and reperfusion (IR) injury is a sterile inflammatory response involving production of ROS. Mitochondrial homeostasis is maintained by mitochondrial quality control (QC). Thioredoxin (TRX) 2 is a key mitochondrial redox-sensitive protein. Resolvin D1 (RvD1), a specialized pro-resolving lipid mediator, exerts anti-inflammatory and antioxidant activities. We investigated mechanisms of RvD1 protection against IR-induced oxidative damage to the liver, focusing on TRX2-mediated mitochondrial QC. EXPERIMENTAL APPROACH Mice underwent partial warm IR. RvD1 was administered 1 h before ischaemia and immediately prior to reperfusion. Human liver carcinoma HepG2 cells were exposed to hypoxia/reoxygenation and transfected with TRX2 siRNA. Immunohistochemistry, Western blotting and enzyme assays were used to follow changes in mitochondrial structure and function. KEY RESULTS RvD1 attenuated hepatocellular damage following IR, assessed by serum aminotransferase activities and histology. RvD1 reduced mitochondrial swelling, lipid peroxidation and glutamate dehydrogenase release. Impaired activities of mitochondrial complexes I and III were restored by RvD1. RvD1 enhanced expression of the mitophagy-related protein, Parkin and inhibited accumulation of PTEN-induced putative kinase 1. RvD1 restored levels of mitochondrial biogenesis proteins including PPARγ coactivator 1α, nuclear respiratory factor 1 and mitochondrial transcription factor A and mtDNA level. RvD1 attenuated the increase in levels of the mitochondrial fission-related protein, dynamin-related protein 1. IR reduced TRX2 levels while increasing TRX2 association with TRX-interacting protein. RvD1 attenuated these changes. The regulatory effects of RvD1 on mitochondrial QC were abolished by TRX2 knockdown. CONCLUSIONS AND IMPLICATIONS We suggest that RvD1 ameliorated IR-induced hepatocellular damage by regulating TRX2-mediated mitochondrial QC.
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Affiliation(s)
- Jung-Woo Kang
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, 440-746, Republic of Korea
| | - Hyo-Sun Choi
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, 440-746, Republic of Korea
| | - Sun-Mee Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, 440-746, Republic of Korea
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16
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Alhawiti NM, Al Mahri S, Aziz MA, Malik SS, Mohammad S. TXNIP in Metabolic Regulation: Physiological Role and Therapeutic Outlook. Curr Drug Targets 2018; 18:1095-1103. [PMID: 28137209 PMCID: PMC5543564 DOI: 10.2174/1389450118666170130145514] [Citation(s) in RCA: 131] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 01/04/2017] [Accepted: 01/25/2017] [Indexed: 12/20/2022]
Abstract
Background & Objective: Thioredoxin-interacting protein (TXNIP) also known as thioredoxin binding protein-2 is a ubiquitously expressed protein that interacts and negatively regulates expression and function of Thioredoxin (TXN). Over the last few years, TXNIP has attracted considerable attention due to its wide-ranging functions impacting several aspects of energy metabolism. TXNIP acts as an important regulator of glucose and lipid metabolism through pleiotropic actions including regulation of β-cell function, hepatic glucose production, peripheral glucose uptake, adipogenesis, and substrate utilization. Overexpression of TXNIP in animal models has been shown to induce apoptosis of pancreatic β-cells, reduce insulin sensitivity in peripheral tissues like skeletal muscle and adipose, and decrease energy expenditure. On the contrary, TXNIP deficient animals are protected from diet induced insulin resistance and type 2 diabetes. Summary: Consequently, targeting TXNIP is thought to offer novel therapeutic opportunity and TXNIP inhibitors have the potential to become a powerful therapeutic tool for the treatment of diabetes mellitus. Here we summarize the current state of our understanding of TXNIP biology, highlight its role in metabolic regulation and raise critical questions that could help future research to exploit TXNIP as a therapeutic target.
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Affiliation(s)
- Naif Mohammad Alhawiti
- Experimental Medicine, King Abdullah International Medical Research Center (KAIMRC), King Saud Bin Abdulaziz University for Health Sciences (KSAU-HS), Ministry of National Guard Health Affairs (NGHA), Riyadh, Saudi Arabia
| | - Saeed Al Mahri
- Experimental Medicine, King Abdullah International Medical Research Center (KAIMRC), King Saud Bin Abdulaziz University for Health Sciences (KSAU-HS), Ministry of National Guard Health Affairs (NGHA), Riyadh, Saudi Arabia
| | - Mohammad Azhar Aziz
- Colorectal Cancer Research Program, King Abdullah International Medical Research Center (KAIMRC), King Saud Bin Abdulaziz University for Health Sciences (KSAU-HS), Ministry of National Guard Health Affairs (NGHA), Riyadh, Saudi Arabia
| | - Shuja Shafi Malik
- Experimental Medicine, King Abdullah International Medical Research Center (KAIMRC), King Saud Bin Abdulaziz University for Health Sciences (KSAU-HS), Ministry of National Guard Health Affairs (NGHA), Riyadh, Saudi Arabia
| | - Sameer Mohammad
- Experimental Medicine, King Abdullah International Medical Research Center (KAIMRC), King Saud Bin Abdulaziz University for Health Sciences (KSAU-HS), Ministry of National Guard Health Affairs (NGHA), Riyadh, Saudi Arabia
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17
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Thioredoxin-Interacting Protein (TXNIP) in Cerebrovascular and Neurodegenerative Diseases: Regulation and Implication. Mol Neurobiol 2018; 55:7900-7920. [PMID: 29488135 DOI: 10.1007/s12035-018-0917-z] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Accepted: 01/21/2018] [Indexed: 02/07/2023]
Abstract
Neurological diseases, including acute attacks (e.g., ischemic stroke) and chronic neurodegenerative diseases (e.g., Alzheimer's disease), have always been one of the leading cause of morbidity and mortality worldwide. These debilitating diseases represent an enormous disease burden, not only in terms of health suffering but also in economic costs. Although the clinical presentations differ for these diseases, a growing body of evidence suggests that oxidative stress and inflammatory responses in brain tissue significantly contribute to their pathology. However, therapies attempting to prevent oxidative damage or inhibiting inflammation have shown little success. Identification and targeting endogenous "upstream" mediators that normalize such processes will lead to improve therapeutic strategy of these diseases. Thioredoxin-interacting protein (TXNIP) is an endogenous inhibitor of the thioredoxin (TRX) system, a major cellular thiol-reducing and antioxidant system. TXNIP regulating redox/glucose-induced stress and inflammation, now is known to get upregulated in stroke and other brain diseases, and represents a promising therapeutic target. In particular, there is growing evidence that glucose strongly induces TXNIP in multiple cell types, suggesting possible physiological roles of TXNIP in glucose metabolism. Recently, a significant body of literature has supported an essential role of TXNIP in the activation of the NOD-like receptor protein (NLRP3)-inflammasome, a well-established multi-molecular protein complex and a pivotal mediator of sterile inflammation. Accordingly, TXNIP has been postulated to reside centrally in detecting cellular damage and mediating inflammatory responses to tissue injury. The majority of recent studies have shown that pharmacological inhibition or genetic deletion of TXNIP is neuroprotective and able to reduce detrimental aspects of pathology following cerebrovascular and neurodegenerative diseases. Conspicuously, the mainstream of the emerging evidences is highlighting TXNIP link to damaging signals in endothelial cells. Thereby, here, we keep the trend to present the accumulative data on CNS diseases dealing with vascular integrity. This review aims to summarize evidence supporting the significant contribution of regulatory mechanisms of TXNIP with the development of brain diseases, explore pharmacological strategies of targeting TXNIP, and outline obstacles to be considered for efficient clinical translation.
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Bedarida T, Domingues A, Baron S, Ferreira C, Vibert F, Cottart CH, Paul JL, Escriou V, Bigey P, Gaussem P, Leguillier T, Nivet-Antoine V. Reduced endothelial thioredoxin-interacting protein protects arteries from damage induced by metabolic stress in vivo. FASEB J 2018; 32:3108-3118. [PMID: 29401599 DOI: 10.1096/fj.201700856rrr] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Although thioredoxin-interacting protein (TXNIP) is involved in a variety of biologic functions, the contribution of endothelial TXNIP has not been well defined. To investigate the endothelial function of TXNIP, we generated a TXNIP knockout mouse on the Cdh5-cre background (TXNIPfl/fl cdh5cre). Control (TXNIPfl/fl) and TXNIPfl/fl cdh5cre mice were fed a high protein-low carbohydrate (HP-LC) diet for 3 mo to induce metabolic stress. We found that TXNIPfl/fl and TXNIPfl/fl cdh5cre mice on an HP-LC diet displayed impaired glucose tolerance and dyslipidemia concretizing the metabolic stress induced. We evaluated the impact of this metabolic stress on mice with reduced endothelial TXNIP expression with regard to arterial structure and function. TXNIPfl/fl cdh5cre mice on an HP-LC diet exhibited less endothelial dysfunction than littermate mice on an HP-LC diet. These mice were protected from decreased aortic medial cell content, impaired aortic distensibility, and increased plasminogen activator inhibitor 1 secretion. This protective effect came with lower oxidative stress and lower inflammation, with a reduced NLRP3 inflammasome expression, leading to a decrease in cleaved IL-1β. We also show the major role of TXNIP in inflammation with a knockdown model, using a TXNIP-specific, small interfering RNA included in a lipoplex. These findings demonstrate a key role for endothelial TXNIP in arterial impairments induced by metabolic stress, making endothelial TXNIP a potential therapeutic target.-Bedarida, T., Domingues, A., Baron, S., Ferreira, C., Vibert, F., Cottart, C.-H., Paul, J.-L., Escriou, V., Bigey, P., Gaussem, P., Leguillier, T., Nivet-Antoine, V. Reduced endothelial thioredoxin-interacting protein protects arteries from damage induced by metabolic stress in vivo.
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Affiliation(s)
- Tatiana Bedarida
- INSERM, Unité Mixte de Recherche (UMR) S-1140, Paris, France.,Faculty of Pharmacy, Paris Descartes University, Sorbonne Paris Cité, Paris, France
| | - Alison Domingues
- INSERM, Unité Mixte de Recherche (UMR) S-1140, Paris, France.,Faculty of Pharmacy, Paris Descartes University, Sorbonne Paris Cité, Paris, France
| | - Stephanie Baron
- Department of Physiology, Georges Pompidou European Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Chrystophe Ferreira
- Platform Anima 5, Paris Descartes University, Sorbonne Paris Cité, Paris, France
| | - Francoise Vibert
- Faculty of Pharmacy, Paris Descartes University, Sorbonne Paris Cité, Paris, France.,INSERM, UMR S-1139, Paris, France
| | - Charles-Henry Cottart
- Faculty of Pharmacy, Paris Descartes University, Sorbonne Paris Cité, Paris, France.,Clinical Biochemistry, Necker Hospital, AP-HP, Paris, France
| | - Jean-Louis Paul
- Department of Biochemistry, Georges Pompidou European Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Virginie Escriou
- Faculty of Pharmacy, Paris Descartes University, Sorbonne Paris Cité, Paris, France.,Centre National de la Recherche Scientifique, Unité de Technologies Chimiques et Biologiques pour la Santé (UTCBS), UMR 8258, Paris, France.,INSERM, UTCBS Unité 1022, Paris, France.,Chimie ParisTech, Paris Sciences et Lettres (PSL) Research University, UTCBS, Paris, France; and
| | - Pascal Bigey
- Faculty of Pharmacy, Paris Descartes University, Sorbonne Paris Cité, Paris, France.,Centre National de la Recherche Scientifique, Unité de Technologies Chimiques et Biologiques pour la Santé (UTCBS), UMR 8258, Paris, France.,INSERM, UTCBS Unité 1022, Paris, France.,Chimie ParisTech, Paris Sciences et Lettres (PSL) Research University, UTCBS, Paris, France; and
| | - Pascale Gaussem
- INSERM, Unité Mixte de Recherche (UMR) S-1140, Paris, France.,Faculty of Pharmacy, Paris Descartes University, Sorbonne Paris Cité, Paris, France.,Department of Hematology, Georges Pompidou European Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Teddy Leguillier
- INSERM, Unité Mixte de Recherche (UMR) S-1140, Paris, France.,Faculty of Pharmacy, Paris Descartes University, Sorbonne Paris Cité, Paris, France.,Clinical Biochemistry, Necker Hospital, AP-HP, Paris, France
| | - Valerie Nivet-Antoine
- INSERM, Unité Mixte de Recherche (UMR) S-1140, Paris, France.,Faculty of Pharmacy, Paris Descartes University, Sorbonne Paris Cité, Paris, France.,Clinical Biochemistry, Necker Hospital, AP-HP, Paris, France
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Bienholz A, Mae Pang R, Guberina H, Rauen U, Witzke O, Wilde B, Petrat F, Feldkamp T, Kribben A. Resveratrol Does Not Protect from Ischemia-Induced Acute Kidney Injury in an in Vivo Rat Model. Kidney Blood Press Res 2017; 42:1090-1103. [PMID: 29207388 DOI: 10.1159/000485606] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 11/23/2017] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS The natural polyphenol resveratrol (RSV) has been shown to ameliorate ischemia/reperfusion (I/R)-induced damage. Therefore, a rat model of I/R-induced AKI equipped with intensive monitoring was utilized to examine direct renal protection by RSV in vivo. METHODS AKI was induced by bilateral renal clamping (45 min) followed by reperfusion (3 h). Solvent-free RSV was continuously infused intravenously (0.056 and 0.28 mg/kg) in a total volume of 7 ml/kg/h starting from 30 min before renal clamping. At a mean arterial blood pressure below 70 mmHg for more than 5 min, bolus injections of 0.5 ml 0.9% NaCl solution were administered repetitively (max. 5 ml/kg/h). RESULTS No differences could be found between normoxic control groups with/without RSV. Bilateral renal clamping and subsequent reperfusion caused a progressive rise in creatinine, cystatin C, and CK, a decrease in cellular ATP content and diuresis. Infusion of RSV increased sirtuin 1 expression after ischemia/reperfusion and was associated with decreased blood pressure during ischemia and early reperfusion accompanied by an increased requirement of bolus injections as well as with increased expression of TNFα. CONCLUSION RSV did not exert protective effects on I/R-induced AKI in the present short-term in vivo rat model. The lack of protection is potentially connected to aggravation of blood pressure instability.
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Affiliation(s)
- Anja Bienholz
- Department of Nephrology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Rahel Mae Pang
- Department of Nephrology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Hana Guberina
- Department of Infectious Diseases, University Duisburg-Essen, Essen, Germany
| | - Ursula Rauen
- Institute of Physiological Chemistry, University Duisburg-Essen, Essen, Germany
| | - Oliver Witzke
- Department of Infectious Diseases, University Duisburg-Essen, Essen, Germany
| | - Benjamin Wilde
- Department of Nephrology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Frank Petrat
- Institute of Physiological Chemistry, University Duisburg-Essen, Essen, Germany
| | - Thorsten Feldkamp
- Department of Nephrology and Hypertension, Christian-Albrechts-University, Kiel, Germany
| | - Andreas Kribben
- Department of Nephrology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
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Elbe H, Gul M, Cetin A, Taslidere E, Ozyalin F, Turkoz Y, Otlu A. Resveratrol reduces light and electron microscopic changes in acetaminophen-induced hepatotoxicity in rats: Role of iNOS expression. Ultrastruct Pathol 2017; 42:39-48. [PMID: 29192844 DOI: 10.1080/01913123.2017.1374313] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
INTRODUCTION Hepatotoxicity is a major complication of acetaminophen (APAP), a widely used analgesic and antipyretic drug. Resveratrol (RSV) is a naturally occurring diphenol and it has anticancer, antioxidant, and anti-inflammatory properties. OBJECTIVES In this study, the beneficial effects of RSV on APAP-induced hepatotoxicity was investigated in rats. MATERIALS AND METHODS Group 1: Ethanol, Group 2: Saline, Group 3: RSV (10 mg/kg/ip), Group 4: APAP (1000 mg/kg/ip/single dose), Group 5: APAP+RSV (20 min after administration of APAP). The rats were sacrificed 24 h after administration of APAP. Light and electron microscopic changes were evaluated. Levels of malondialdehyde (MDA) and glutathione (GSH), catalase (CAT), and superoxide dismutase (SOD) activities were determined in liver tissue. RESULTS Rats of the ethanol, saline, and RSV groups did not present any histopathological alterations. In the APAP group, we observed vascular congestion, necrosis, inflammation, sinusoidal dilatation, and loss of glycogen content. In the APAP+RSV group, these changes were markedly reduced. iNOS immunostaining showed very weak positive stained hepatocytes the sections of control, saline, and RSV groups. However, in the APAP group, iNOS immunostaining was most evident in pericentral hepatocytes. In the same areas in APAP+RSV group, intensity of iNOS immunostaining decreased. A significant increase in MDA and decreases in GSH level, CAT, and SOD activity indicated that APAP-induced hepatotoxicity was mediated through oxidative stress. Significant beneficial changes were noted in tissue oxidative stress indicators in rats treated with RSV. CONCLUSION These biochemical, histopathological, and ultrastructural findings revealed that RSV reduced the severity of APAP-induced alterations in liver.
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Affiliation(s)
- Hulya Elbe
- a Faculty of Medicine, Department of Histology and Embryology , Mugla Sıtkı Kocman University , Mugla , Turkey
| | - Mehmet Gul
- b Faculty of Medicine, Department of Histology and Embryology , Inonu University , Malatya , Turkey
| | - Asli Cetin
- b Faculty of Medicine, Department of Histology and Embryology , Inonu University , Malatya , Turkey
| | - Elif Taslidere
- c Faculty of Medicine, Department of Histology and Embryology , Bezmialem Vakif University , Istanbul , Turkey
| | - Fatma Ozyalin
- d Faculty of Medicine, Department of Medical Biochemistry , Inonu University , Malatya , Turkey
| | - Yusuf Turkoz
- d Faculty of Medicine, Department of Medical Biochemistry , Inonu University , Malatya , Turkey
| | - Ali Otlu
- b Faculty of Medicine, Department of Histology and Embryology , Inonu University , Malatya , Turkey
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21
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Kim DH, Kim SM, Lee B, Lee EK, Chung KW, Moon KM, An HJ, Kim KM, Yu BP, Chung HY. Effect of betaine on hepatic insulin resistance through FOXO1-induced NLRP3 inflammasome. J Nutr Biochem 2017; 45:104-114. [PMID: 28499186 DOI: 10.1016/j.jnutbio.2017.04.014] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 04/17/2017] [Accepted: 04/18/2017] [Indexed: 01/22/2023]
Abstract
In the present study, we attempted to elucidate whether molecular modulation of inflammation by betaine through the forkhead box O1 (FOXO1)-induced NLRP3 inflammasome improves insulin resistance. Betaine is a major water-soluble component of Lycium chinense. It mainly functions as an oxidative metabolite of choline by suppressing superoxide-induced free radicals by donating methyl groups. The FOXO1 transcription factor regulates various genes involved in cellular metabolic processes related to cell death as well as oxidative stress responses through binding to the thioredoxin-interacting protein (TXNIP). Betaine is known to inhibit FOXO1 phosphorylation through phosphoinositide 3-kinase (PI3K)/protein kinase B (AKT) in liver cells exposed to insulin. To elucidate the molecular mechanism of inactivation of insulin-induced FOXO1 by the antioxidant betaine, we used HepG2 cells and the liver of db/db mice treated with betaine at a dose of 50 mg/kg/day for 3 weeks. We found that the activation of NLRP3 inflammasome genes was reduced by betaine, which resulted in the suppression of reactive species (RS) production in liver cells. In addition, betaine inhibited insulin-induced PI3K/AKT and FOXO1 activation. Therefore, betaine suppressed the cytokine interleukin-1β production by inhibiting the activation of the NLRP3 inflammasome via interaction of FOXO1 and TXNIP. Our results suggest that betaine inhibits the FOXO1 binding to TXNIP, leading to the suppression of RS-induced NLRP3 inflammasome activation in a diabetic liver.
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Affiliation(s)
- Dae Hyun Kim
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busandaehak-ro, 63 Beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea
| | - Seong Min Kim
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busandaehak-ro, 63 Beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea
| | - Bonggi Lee
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busandaehak-ro, 63 Beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea; Korean Medicine (KM)-Application Center, Korea Institute of Oriental Medicine (KIOM), 70 Cheomdan-ro, Dong-gu, Daegu 41062, Republic of Korea
| | - Eun Kyeong Lee
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busandaehak-ro, 63 Beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea
| | - Ki Wung Chung
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busandaehak-ro, 63 Beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea
| | - Kyoung Mi Moon
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busandaehak-ro, 63 Beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea
| | - Hye Jin An
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busandaehak-ro, 63 Beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea
| | - Kyung Mok Kim
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busandaehak-ro, 63 Beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea
| | - Byung Pal Yu
- Department of Physiology, University of Texas Health Science Center, San Antonio, TX 78229, USA
| | - Hae Young Chung
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busandaehak-ro, 63 Beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea.
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22
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Kamaleddin MA. The paradoxical pro- and antiangiogenic actions of resveratrol: therapeutic applications in cancer and diabetes. Ann N Y Acad Sci 2016; 1386:3-15. [PMID: 27880855 DOI: 10.1111/nyas.13283] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 09/24/2016] [Accepted: 09/29/2016] [Indexed: 02/06/2023]
Abstract
Resveratrol, a polyphenol found in grapes, peanuts, and red wine, plays different roles in diseases such as cancer and diabetes. Existing information indicates that resveratrol provides cardioprotection, as evidenced by superior postischemic ventricular recovery, reduced myocardial infarct size, and decreased number of apoptotic cardiomyocytes associated with resveratrol treatment in animal models. Cardiovascular benefits are experienced in humans with routine but not acute consumption of red wine. In this concise review, the paradoxical pro- and antiangiogenic effects of resveratrol are described, and different roles for resveratrol in the formation of new blood vessels are explained through different mechanisms. It is hypothesized that the effects of resveratrol on different cell types are not only dependent on its concentration but also on the physical and chemical conditions surrounding cells. The findings discussed herein shed light on potential therapeutic proapoptotic and antiangiogenic applications of low-dose resveratrol treatment in the prevention and treatment of different diseases.
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23
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Wang BF, Yoshioka J. The Emerging Role of Thioredoxin-Interacting Protein in Myocardial Ischemia/Reperfusion Injury. J Cardiovasc Pharmacol Ther 2016; 22:219-229. [PMID: 27807222 DOI: 10.1177/1074248416675731] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Myocardial ischemia/reperfusion injury represents a major threat to human health and contributes to adverse cardiovascular outcomes worldwide. Despite the identification of numerous molecular mechanisms, understanding of the complex pathophysiology of this clinical syndrome remains incomplete. Thioredoxin-interacting protein (Txnip) has been of great interest in the past decade since it has been reported to be a critical regulator in human diseases with several important cellular functions. Thioredoxin-interacting protein binds to and inhibits thioredoxin, a redox protein that neutralizes reactive oxygen species (ROS), and through its interaction with thioredoxin, Txnip sensitizes cardiomyocytes to ROS-induced apoptosis. Interestingly, evidence from recent studies also suggests that some of the effects of Txnip may be unrelated to changes in thioredoxin activity. These pleiotropic effects of Txnip are mediated by interactions with other signaling molecules, such as nod-like receptor pyrin domain-containing 3 inflammasome and glucose transporter 1. Indeed, Txnip has been implicated in the regulation of inflammatory response and glucose homeostasis during myocardial ischemia/reperfusion injury. This review attempts to make the case that in addition to interacting with thioredoxin, Txnip contributes to some of the pathological consequences of myocardial ischemia and infarction through endogenous signals in multiple molecular mechanisms.
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Affiliation(s)
- Bing F Wang
- 1 Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Jun Yoshioka
- 1 Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
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24
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Thioredoxin-Interacting Protein Mediates NLRP3 Inflammasome Activation Involved in the Susceptibility to Ischemic Acute Kidney Injury in Diabetes. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:2386068. [PMID: 27867451 PMCID: PMC5102753 DOI: 10.1155/2016/2386068] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 08/10/2016] [Accepted: 09/19/2016] [Indexed: 12/14/2022]
Abstract
Kidney in diabetic state is more sensitive to ischemic acute kidney injury (AKI). However, the underlying mechanisms remain unclear. Herein, we examined the impact of diabetes mellitus on thioredoxin-interacting protein (TXNIP) expression and whether mediated NLRP3 activation was associated with renal ischemia/reperfusion- (I/R-) induced AKI. In an in vivo model, streptozotocin-induced diabetic rats showed higher susceptibility to I/R injury with increased TXNIP expression, which was significantly attenuated by resveratrol (RES) treatment (10 mg/kg intraperitoneal daily injection for 7 consecutive days prior to I/R induction). RES treatment significantly inhibited TXNIP binding to NLRP3 in diabetic rats subjected to renal I/R injury. Furthermore, RES treatment significantly reduced cleaved caspase-1 expression and production of IL-1β and IL-18. In an in vitro study using cultured human kidney proximal tubular cell (HK-2 cells) in high glucose condition (HG, 30 mM) subjected to hypoxia/reoxygenation (H/R), HG combined H/R (HH/R) stimulated TXNIP expression which was accompanied by increased NLRP3 expression, ROS generation, caspase-1 activity and IL-1β levels, and aggravated HK-2 cells apoptosis. All these changes were significantly attenuated by TXNIP RNAi and RES treatment. In conclusion, our results demonstrate that TXNIP-mediated NLRP3 activation through oxidative stress is a key signaling mechanism in the susceptibility to AKI in diabetic models.
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McGill MR, Du K, Weemhoff JL, Jaeschke H. Critical review of resveratrol in xenobiotic-induced hepatotoxicity. Food Chem Toxicol 2015; 86:309-18. [PMID: 26561740 DOI: 10.1016/j.fct.2015.11.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 10/30/2015] [Accepted: 11/02/2015] [Indexed: 02/07/2023]
Abstract
Use of natural products is increasingly popular. In fact, many patients with liver diseases self-medicate with herbal supplements. Resveratrol (RSV), in particular, is a common natural product that can reduce injury in experimental models of liver disease. Xenobiotic hepatotoxicity is a particularly important area-of-need for therapeutics. Drug-induced liver injury, for example, is the most common cause of acute liver failure (ALF) and ALF-induced deaths in many countries. Importantly, RSV protects against hepatotoxicity in animal models in vivo caused by several drugs and chemicals and may be an effective intervention. Although many mechanisms have been proposed to explain the protection, not all are consistent with other data. Furthermore, RSV suffers from other issues, including limited bioavailability due to extensive hepatic metabolism. The purpose of this article is to summarize recent findings on the protective effects of RSV in xenobiotic-induced liver injury and other forms of liver injury and to provide a critical review of the underlying mechanisms. New mechanisms that are more consistent with data emerging from the toxicology field are suggested. Efforts to move RSV into clinical use are also considered. Overall, RSV is a promising candidate for therapeutic use, but additional studies are needed to better understand its effects.
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Affiliation(s)
- Mitchell R McGill
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, KS, USA.
| | - Kuo Du
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, KS, USA
| | - James L Weemhoff
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, KS, USA
| | - Hartmut Jaeschke
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, KS, USA
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Bedarida T, Baron S, Vibert F, Ayer A, Henrion D, Thioulouse E, Marchiol C, Beaudeux JL, Cottart CH, Nivet-Antoine V. Resveratrol Decreases TXNIP mRNA and Protein Nuclear Expressions With an Arterial Function Improvement in Old Mice. J Gerontol A Biol Sci Med Sci 2015; 71:720-9. [PMID: 26041427 DOI: 10.1093/gerona/glv071] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Accepted: 04/24/2015] [Indexed: 01/01/2023] Open
Abstract
Aging leads to a high prevalence of glucose intolerance and cardiovascular diseases, with oxidative stress playing a potential role. Resveratrol has shown promising effects on glucose tolerance and tends to improve endothelial function in elderly patients. Thioredoxin-interacting protein (TXNIP) was recently proposed as a potential link connecting glucose metabolism to oxidative stress. Here, we investigated the resveratrol-induced improvement of arterial aging phenotype in old mice and the expression of aortic TXNIP. Using an in vivo model of old mice with or without 3-month resveratrol treatment, we investigated the effects of resveratrol on age-related impairments from a cardiovascular Doppler analysis, to a molecular level, by studying inflammation and oxidative stress factors. We found a dual effect of resveratrol, with a decrease of age-related glucose intolerance and oxidative stress imbalance leading to reduced matrix remodeling that forestalls arterial aging phenotype in terms of intima-media thickness and arterial distensibility. These results provide the first evidence that aortic TXNIP mRNA and protein nuclear expressions are increased in the arterial aging and decreased by resveratrol treatment. In conclusion, we demonstrated that resveratrol helped to restore several aging impaired processes in old mice, with a decrease of aortic TXNIP mRNA and protein nuclear expressions.
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Affiliation(s)
- Tatiana Bedarida
- Faculty of Pharmacy, Inserm UMRS_1140, Paris, France. Paris Descartes University, Sorbonne Paris Cité, Paris, France.
| | - Stephanie Baron
- Paris Descartes University, Sorbonne Paris Cité, Paris, France. Department of Physiology, Georges Pompidou European Hospital, AP-HP, Paris, France
| | - Françoise Vibert
- Paris Descartes University, Sorbonne Paris Cité, Paris, France. Faculty of Pharmacy, UMR-S 1139, Paris, France
| | - Audrey Ayer
- CNRS UMR 6214, INSERM U1083, Angers University, Angers, France
| | - Daniel Henrion
- CNRS UMR 6214, INSERM U1083, Angers University, Angers, France
| | | | - Carmen Marchiol
- Paris Descartes University, Sorbonne Paris Cité, Paris, France. PIPA, Cochin Institute - U1016, Paris, France
| | - Jean-Louis Beaudeux
- Paris Descartes University, Sorbonne Paris Cité, Paris, France. Faculty of Pharmacy, UMR-S 1139, Paris, France. Clinical Biochemistry, Necker Hospital, AP-HP, Paris, France
| | - Charles-Henry Cottart
- Paris Descartes University, Sorbonne Paris Cité, Paris, France. Clinical Biochemistry, Necker Hospital, AP-HP, Paris, France
| | - Valerie Nivet-Antoine
- Faculty of Pharmacy, Inserm UMRS_1140, Paris, France. Paris Descartes University, Sorbonne Paris Cité, Paris, France. Department of Biochemistry, Georges Pompidou European Hospital, AP-HP, Paris, France
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Chong CR, Chan WPA, Nguyen TH, Liu S, Procter NEK, Ngo DT, Sverdlov AL, Chirkov YY, Horowitz JD. Thioredoxin-interacting protein: pathophysiology and emerging pharmacotherapeutics in cardiovascular disease and diabetes. Cardiovasc Drugs Ther 2015; 28:347-60. [PMID: 25088927 DOI: 10.1007/s10557-014-6538-5] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The thioredoxin system, which consists of thioredoxin (Trx), nicotinamide adenine dinucleotide phosphate (NADPH) and thioredoxin reductase (TrxR), has emerged as a major anti-oxidant involved in the maintenance of cellular physiology and survival. Dysregulation in this system has been associated with metabolic, cardiovascular, and malignant disorders. Thioredoxin-interacting protein (TXNIP), also known as vitamin D-upregulated protein or thioredoxin-binding-protein-2, functions as a physiological inhibitor of Trx, and pathological suppression of Trx by TXNIP has been demonstrated in diabetes and cardiovascular diseases. Furthermore, TXNIP effects are partially Trx-independent; these include direct activation of inflammation and inhibition of glucose uptake. Many of the effects of TXNIP are initiated by its dissociation from intra-nuclear binding with Trx or other SH-containing proteins: these effects include its migration to cytoplasm, modulating stress responses in mitochondria and endoplasmic reticulum, and also potentially activating apoptotic pathways. TXNIP also interacts with the nitric oxide (NO) signaling system, with apparent suppression of NO effect. TXNIP production is modulated by redox stress, glucose levels, hypoxia and several inflammatory activators. In recent studies, it has been shown that therapeutic agents including insulin, metformin, angiotensin converting enzyme inhibitors and calcium channel blockers reduce TXNIP expression, although it is uncertain to what extent TXNIP suppression contributes to their clinical efficacy. This review addresses the role of TXNIP in health and in cardiovascular and metabolic disorders. Finally, the potential advantages (and disadvantages) of pharmacological suppression of TXNIP in cardiovascular disease and diabetes are summarized.
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Affiliation(s)
- Cher-Rin Chong
- Cardiology and Clinical Pharmacology Department, Basil Hetzel Institute, Queen Elizabeth Hospital, University of Adelaide, Adelaide, Australia
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Ishrat T, Mohamed IN, Pillai B, Soliman S, Fouda AY, Ergul A, El-Remessy AB, Fagan SC. Thioredoxin-interacting protein: a novel target for neuroprotection in experimental thromboembolic stroke in mice. Mol Neurobiol 2015; 51:766-78. [PMID: 24939693 PMCID: PMC4730955 DOI: 10.1007/s12035-014-8766-x] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 06/01/2014] [Indexed: 12/20/2022]
Abstract
Redox imbalance in the brain significantly contributes to ischemic stroke pathogenesis, but antioxidant therapies have failed in clinical trials. Activation of endogenous defense mechanisms may provide better protection against stroke-induced oxidative injury. TXNIP (thioredoxin-interacting protein) is an endogenous inhibitor of thioredoxin (TRX), a key antioxidant system. We hypothesize that TXNIP inhibition attenuates redox imbalance and inflammation and provides protection against a clinically relevant model of embolic stroke. Male TXNIP-knockout (TKO), wild-type (WT), and WT mice treated with a pharmacological inhibitor of TXNIP, resveratrol (RES; 5 mg/kg body weight), were subjected to embolic middle cerebral artery occlusion (eMCAO). Behavior outcomes were monitored using neurological deficits score and grip strength meter at 24 h after eMCAO. Expression of oxidative, inflammatory, and apoptotic markers was analyzed by Western blot, immunohistochemistry, and slot blot at 24 h post-eMCAO. Our result showed that ischemic injury increases TXNIP in WT mice and that RES inhibits TXNIP expression and protects the brain against ischemic damage. TKO and RES-treated mice exhibited a 39.26 and 41.11 % decrease in infarct size and improved neurological score and grip strength compared to WT mice after eMCAO. Furthermore, the levels of TRX, nitrotyrosine, NOD-like receptor protein (NLRP3), interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), and activations of caspase-1, caspase-3, and poly-ADP-ribose polymerase (PARP) were significantly (P < 0.05) attenuated in TKO and RES-treated mice. The present study suggests that TXNIP is contributing to acute ischemic stroke through redox imbalance and inflammasome activation and inhibition of TXNIP may provide a new target for therapeutic interventions. This study also affirms the importance of the antioxidant effect of RES on the TRX/TXNIP system.
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Zhang X, Zhang JH, Chen XY, Hu QH, Wang MX, Jin R, Zhang QY, Wang W, Wang R, Kang LL, Li JS, Li M, Pan Y, Huang JJ, Kong LD. Reactive oxygen species-induced TXNIP drives fructose-mediated hepatic inflammation and lipid accumulation through NLRP3 inflammasome activation. Antioxid Redox Signal 2015; 22:848-70. [PMID: 25602171 PMCID: PMC4367240 DOI: 10.1089/ars.2014.5868] [Citation(s) in RCA: 187] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
AIMS Increased fructose consumption predisposes the liver to nonalcoholic fatty liver disease (NAFLD), but the mechanisms are elusive. Thioredoxin-interacting protein (TXNIP) links oxidative stress to NOD-like receptor family, pyrin domain containing 3 (NLRP3) inflammasome activation and this signaling axis may be involved in fructose-induced NAFLD. Here, we explore the role of reactive oxygen species (ROS)-induced TXNIP overexpression in fructose-mediated hepatic NLRP3 inflammasome activation, inflammation, and lipid accumulation. RESULTS Rats were fed a 10% fructose diet for 8 weeks and treated with allopurinol and quercetin during the last 4 weeks. Five millimolars of fructose-exposed hepatocytes (primary rat hepatocytes, rat hepatic parenchymal cells [RHPCs], HLO2, HepG2) were co-incubated with antioxidants or caspase-1 inhibitor or subjected to TXNIP or NLRP3 siRNA interference. Fructose induced NLRP3 inflammasome activation and pro-inflammatory cytokine secretion, janus-activated kinase 2/signal transducers and activators of transcription 3-mediated inflammatory signaling, and expression alteration of lipid metabolism-related genes in cultured hepatocytes and rat livers. NLRP3 silencing and caspase-1 suppression blocked these effects in primary rat hepatocytes and RHPCs, confirming that inflammasome activation alters hepatocyte lipid metabolism. Hepatocellular ROS and TXNIP were increased in animal and cell models. TXNIP silencing blocked NLRP3 inflammasome activation, inflammation, and lipid metabolism perturbations but not ROS induction in fructose-exposed hepatocytes, whereas antioxidants addition abrogated TXNIP induction and diminished the detrimental effects in fructose-exposed hepatocytes and rat livers. INNOVATION AND CONCLUSIONS This study provides a novel mechanism for fructose-induced NAFLD pathogenesis by which the ROS-TXNIP pathway mediates hepatocellular NLRP3 inflammasome activation, inflammation and lipid accumulation. Antioxidant-based interventions can inhibit the ROS-TXNIP pathway.
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Affiliation(s)
- Xian Zhang
- 1 State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University , Nanjing, People's Republic of China
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Deletion of thioredoxin interacting protein (TXNIP) augments hyperoxia-induced vaso-obliteration in a mouse model of oxygen induced-retinopathy. PLoS One 2014; 9:e110388. [PMID: 25329456 PMCID: PMC4199686 DOI: 10.1371/journal.pone.0110388] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 09/12/2014] [Indexed: 02/07/2023] Open
Abstract
We have recently shown that thioredoxin interacting protein (TXNIP) is required for VEGF-mediated VEGFR2 receptor activation and angiogenic signal. Retinas from TXNIP knockout mice (TKO) exhibited higher cellular antioxidant defense compared to wild type (WT). This study aimed to examine the impact of TXNIP deletion on hyperoxia-induced vaso-obliteration in ischemic retinopathy. TKO and WT pups were subjected to oxygen-induced retinopathy model. Retinal central capillary dropout was measured at p12. Retinal redox and nitrative state were assessed by reduced-glutathione (GSH), thioredoxin reductase activity and nitrotyrosine formation. Western blot and QT-PCR were used to assess VEGF, VEGFR-2, Akt, iNOS and eNOS, thioredoxin expression, ASK-1 activation and downstream cleaved caspase-3 and PARP in retinal lysates. Retinas from TKO mice exposed to hyperoxia showed significant increases (1.5-fold) in vaso-obliteration as indicated by central capillary drop out area compared to WT. Retinas from TKO showed minimal nitrotyrosine levels (10% of WT) with no change in eNOS or iNOS mRNA expression. There was no change in levels of VEGF or activation of VEGFR2 and its downstream Akt in retinas from TKO and WT. In comparison to WT, retinas from TKO showed significantly higher level of GSH and thioredoxin reductase activity in normoxia but comparable levels under hyperoxia. Exposure of TKO to hyperoxia significantly decreased the anti-apoptotic thioredoxin protein (∼50%) level compared with WT. This effect was associated with a significant increase in activation of the apoptotic ASK-1, PARP and caspase-3 pathway. Our results showed that despite comparable VEGF level and signal in TKO, exposure to hyperoxia significantly decreased Trx expression compared to WT. This effect resulted in liberation and activation of the apoptotic ASK-1 signal. These findings suggest that TXNIP is required for endothelial cell survival and homeostasis especially under stress conditions including hyperoxia.
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Xiao J, Zhu Y, Liu Y, Tipoe GL, Xing F, So KF. Lycium barbarum polysaccharide attenuates alcoholic cellular injury through TXNIP-NLRP3 inflammasome pathway. Int J Biol Macromol 2014; 69:73-8. [PMID: 24858535 DOI: 10.1016/j.ijbiomac.2014.05.034] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 05/13/2014] [Accepted: 05/15/2014] [Indexed: 12/15/2022]
Abstract
Lycium barbarum has been used as a traditional Chinese medicine to nourish liver, kidneys and the eyes. However, the underlying mechanisms of its hepatic-protective properties remain uncertain. In this study, we aimed to investigate whether thioredoxin-interacting protein (TXNIP) and NOD-like receptor 3 (NLRP3) inflammasome mediated the attenuation of ethanol-induced hepatic injury by Lycium barbarum polysaccharide (LBP). Rat normal hepatocyte line BRL-3A was pre-treated with LBP prior to ethanol incubation. Hepatic damages, including apoptosis, inflammation, and oxidative stress, were measured. Then the inhibition of endogenous TXNIP expression was achieved by using its specific siRNA to test its possible involvement in the injury attenuation. We found that 50μg/ml LBP pre-treatment significantly alleviated 24-h ethanol exposure-induced overexpression of TXNIP, increased cellular apoptosis, secretion of inflammatory cytokines, activation of NLRP3 inflammasome, production of ROS, and reduced antioxidant enzyme expression. Silence of TXNIP suppressed the activated NLRP3 inflammasome, increased oxidative stress and worsened apoptosis in the cells. Further addition of LBP did not influence the effects of TXNIP inhibition on the cells. In conclusion, inhibition of hepatic TXNIP by LBP contributes to the reduction of cellular apoptosis, oxidative stress and NLRP3 inflammasome-mediated inflammation.
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Affiliation(s)
- Jia Xiao
- Department of Immunobiology, Institute of Tissue Transplantation and Immunology, Jinan University, Guangzhou 510632, China; Department of Anatomy, The University of Hong Kong, Hong Kong, China; Department of Infectious Diseases, Shenzhen Third People's Hospital, Shenzhen 518112, China
| | - Yinghui Zhu
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, China
| | - Yingxia Liu
- Department of Infectious Diseases, Shenzhen Third People's Hospital, Shenzhen 518112, China
| | - George L Tipoe
- Department of Anatomy, The University of Hong Kong, Hong Kong, China
| | - Feiyue Xing
- Department of Immunobiology, Institute of Tissue Transplantation and Immunology, Jinan University, Guangzhou 510632, China.
| | - Kwok-Fai So
- GMH Institute of CNS Regeneration, Guangdong Medical Key Laboratory of Brain Function and Diseases, Jinan University, Guangzhou, China; Department of Ophthalmology, The University of Hong Kong, Hong Kong, China.
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Baron S, Bedarida T, Cottart CH, Vibert F, Vessieres E, Ayer A, Henrion D, Hommeril B, Paul JL, Renault G, Saubamea B, Beaudeux JL, Procaccio V, Nivet-Antoine V. Dual effects of resveratrol on arterial damage induced by insulin resistance in aged mice. J Gerontol A Biol Sci Med Sci 2013; 69:260-9. [PMID: 23793060 DOI: 10.1093/gerona/glt081] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Aging leads to increased insulin resistance and arterial dysfunction, with oxidative stress playing an important role. This study explored the metabolic and arterial effects of a chronic treatment with resveratrol, an antioxidant polyphenol compound that has been shown to restore insulin sensitivity and decrease oxidative stress, in old mice with or without a high-protein diet renutrition care. High-protein diet tended to increase insulin resistance and atheromatous risk. Resveratrol improved insulin sensitivity in old mice fed standard diet by decreasing homeostasis model of assessment-insulin resistance and resistin levels. However, resveratrol did not improve insulin resistance status in old mice receiving the high-protein diet. In contrast, resveratrol exhibited deleterious effects by increasing inflammation state and superoxide production and diminishing aortic distensibility. In conclusion, we demonstrate that resveratrol has beneficial or deleterious effects on insulin sensitivity and arterial function, depending on nutritional status in our models.
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Affiliation(s)
- Stephanie Baron
- PharmD, Viva Team-EA 4466, Faculty of Pharmacy, Paris Descartes University, Sorbonne Paris Cité 75006, Paris Cedex, France.
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Spindel ON, World C, Berk BC. Thioredoxin interacting protein: redox dependent and independent regulatory mechanisms. Antioxid Redox Signal 2012; 16:587-96. [PMID: 21929372 PMCID: PMC3270053 DOI: 10.1089/ars.2011.4137] [Citation(s) in RCA: 146] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2011] [Revised: 09/19/2011] [Accepted: 09/19/2011] [Indexed: 12/18/2022]
Abstract
SIGNIFICANCE The thioredoxin-interacting protein (TXNIP, also termed VDUP1 for vitamin D upregulated protein or TBP2 for thioredoxin-binding protein) was originally discovered by virtue of its strong regulation by vitamin D. Recently, TXNIP has been found to regulate the cellular reduction-oxidation (redox) state by binding to and inhibiting thioredoxin (TRX) in a redox-dependent fashion. RECENT ADVANCES Studies of the Hcb-19 mouse, TXNIP nonsense mutated mouse, demonstrate redox-mediated roles in lipid and glucose metabolism, cardiac function, inflammation, and carcinogenesis. Exciting recent data indicate important roles for TXNIP in redox independent signaling. Specifically, sequence analysis revealed that TXNIP is a member of the classical visual/β-arrestin superfamily, and is one of the six members of the arrestin domain-containing (ARRDC, or α-arrestin) family. CRITICAL ISSUES Although the function of α-arrestins is not well known, recent studies suggest roles in endocytosis and protein ubiquitination through PPxY motifs in their C-terminal tails. Importantly, the ability of TXNIP to inhibit glucose uptake was found to be independent of TRX binding. Further investigation showed that several metabolic functions of TXNIP were due to the arrestin domains, thus further supporting the importance of redox independent functions of TXNIP. FUTURE DIRECTIONS Since TXNIP transcription and protein stability are highly regulated by multiple tissue-specific stimuli, it appears that TXNIP should be a good therapeutic target for metabolic diseases.
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Affiliation(s)
- Oded N. Spindel
- Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York
- Department of Pharmacology and Physiology, Aab Cardiovascular Research Institute, University of Rochester School of Medicine and Dentistry, Rochester, New York
| | - Cameron World
- Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York
| | - Bradford C. Berk
- Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York
- Department of Pharmacology and Physiology, Aab Cardiovascular Research Institute, University of Rochester School of Medicine and Dentistry, Rochester, New York
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Masutani H, Yoshihara E, Masaki S, Chen Z, Yodoi J. Thioredoxin binding protein (TBP)-2/Txnip and α-arrestin proteins in cancer and diabetes mellitus. J Clin Biochem Nutr 2011; 50:23-34. [PMID: 22247597 PMCID: PMC3246179 DOI: 10.3164/jcbn.11-36sr] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Accepted: 05/05/2011] [Indexed: 01/05/2023] Open
Abstract
Thioredoxin binding protein -2/ thioredoxin interacting protein is an α-arrestin protein that has attracted much attention as a multifunctional regulator. Thioredoxin binding protein -2 expression is downregulated in tumor cells and the level of thioredoxin binding protein is correlated with clinical stage of cancer. Mice with mutations or knockout of the thioredoxin binding protein -2 gene are much more susceptible to carcinogenesis than wild-type mice, indicating a role for thioredoxin binding protein -2 in cancer suppression. Studies have also revealed roles for thioredoxin binding protein -2 in metabolic control. Enhancement of thioredoxin binding protein -2 expression causes impairment of insulin sensitivity and glucose-induced insulin secretion, and β-cell apoptosis. These changes are important characteristics of type 2 diabetes mellitus. Thioredoxin binding protein -2 regulates transcription of metabolic regulating genes. Thioredoxin binding protein -2-like inducible membrane protein/ arrestin domain containing 3 regulates endocytosis of receptors such as the β(2)-adrenergic receptor. The α-arrestin family possesses PPXY motifs and may function as an adaptor/scaffold for NEDD family ubiquitin ligases. Elucidation of the molecular mechanisms of α-arrestin proteins would provide a new pharmacological basis for developing approaches against cancer and type 2 diabetes mellitus.
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Affiliation(s)
- Hiroshi Masutani
- Institute for Virus Research, Graduate School of Biostudies, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo, Kyoto 606-8507, Japan
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