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Brogyanyi T, Kejík Z, Veselá K, Dytrych P, Hoskovec D, Masařik M, Babula P, Kaplánek R, Přibyl T, Zelenka J, Ruml T, Vokurka M, Martásek P, Jakubek M. Iron chelators as mitophagy agents: Potential and limitations. Biomed Pharmacother 2024; 179:117407. [PMID: 39265234 DOI: 10.1016/j.biopha.2024.117407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2024] [Revised: 08/26/2024] [Accepted: 09/02/2024] [Indexed: 09/14/2024] Open
Abstract
Mitochondrial autophagy (mitophagy) is very important process for the maintenance of cellular homeostasis, functionality and survival. Its dysregulation is associated with high risk and progression numerous serious diseases (e.g., oncological, neurodegenerative and cardiovascular ones). Therefore, targeting mitophagy mechanisms is very hot topic in the biological and medicinal research. The interrelationships between the regulation of mitophagy and iron homeostasis are now becoming apparent. In short, mitochondria are central point for the regulation of iron homeostasis, but change in intracellular cheatable iron level can induce/repress mitophagy. In this review, relationships between iron homeostasis and mitophagy are thoroughly discussed and described. Also, therapeutic applicability of mitophagy chelators in the context of individual diseases is comprehensively and critically evaluated.
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Affiliation(s)
- Tereza Brogyanyi
- BIOCEV, First Faculty of Medicine, Charles University, Vestec 252 50, Czech Republic; Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital, Prague 120 00, Czech Republic; Institute of Pathological Physiology, First Faculty of Medicine, Charles University in Prague, U Nemocnice 5, 1, Prague 28 53, Czech Republic
| | - Zdeněk Kejík
- BIOCEV, First Faculty of Medicine, Charles University, Vestec 252 50, Czech Republic; Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital, Prague 120 00, Czech Republic
| | - Kateřina Veselá
- BIOCEV, First Faculty of Medicine, Charles University, Vestec 252 50, Czech Republic; Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital, Prague 120 00, Czech Republic
| | - Petr Dytrych
- 1st Department of Surgery-Department of Abdominal, Thoracic Surgery and Traumatology, First Faculty of Medicine, Charles University and General University Hospital, U Nemocnice 2, Prague 121 08, Czech Republic
| | - David Hoskovec
- 1st Department of Surgery-Department of Abdominal, Thoracic Surgery and Traumatology, First Faculty of Medicine, Charles University and General University Hospital, U Nemocnice 2, Prague 121 08, Czech Republic
| | - Michal Masařik
- BIOCEV, First Faculty of Medicine, Charles University, Vestec 252 50, Czech Republic; Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital, Prague 120 00, Czech Republic; Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, Brno CZ-625 00, Czech Republic; Department of Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, Brno 625 00, Czech Republic
| | - Petr Babula
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, Brno CZ-625 00, Czech Republic
| | - Robert Kaplánek
- BIOCEV, First Faculty of Medicine, Charles University, Vestec 252 50, Czech Republic; Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital, Prague 120 00, Czech Republic
| | - Tomáš Přibyl
- Department of Biochemistry and Microbiology, University of Chemistry and Technology, Prague, Prague 166 28, Czech Republic
| | - Jaroslav Zelenka
- Department of Biochemistry and Microbiology, University of Chemistry and Technology, Prague, Prague 166 28, Czech Republic
| | - Tomáš Ruml
- Department of Biochemistry and Microbiology, University of Chemistry and Technology, Prague, Prague 166 28, Czech Republic
| | - Martin Vokurka
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University in Prague, U Nemocnice 5, 1, Prague 28 53, Czech Republic
| | - Pavel Martásek
- Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital, Prague 120 00, Czech Republic
| | - Milan Jakubek
- BIOCEV, First Faculty of Medicine, Charles University, Vestec 252 50, Czech Republic; Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital, Prague 120 00, Czech Republic.
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Mohabbat M, Arazi H. Effect of resistance training plus enriched probiotic supplement on sestrin2, oxidative stress, and mitophagy markers in elderly male Wistar rats. Sci Rep 2024; 14:7744. [PMID: 38565633 PMCID: PMC10987664 DOI: 10.1038/s41598-024-58462-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 03/29/2024] [Indexed: 04/04/2024] Open
Abstract
This study aimed to determine the effects of resistance training combined with a probiotic supplement enriched with vitamin D and leucine on sestrin2, oxidative stress, antioxidant defense, and mitophagy markers in aged Wistar rats. Thirty-five male rats were randomly assigned to two age groups (old with 18-24 months of age and young with 8-12 weeks of age) and then divided into five groups, including (1) old control (OC: n = 5 + 2 for reserve in all groups), (2) young control (YC: n = 5), (3) old resistance training (OR: n = 5), (4) old resistance training plus supplement (ORS: n = 5), and old supplement group (OS: n = 5). Training groups performed ladder climbing resistance training 3 times per week for 8 weeks. Training intensity was inserted progressively, with values equal to 65, 75, and 85, determining rats' maximal carrying load capacity. Each animal made 5 to 8 climbs in each training session, and the time of each climb was between 12 and 15 s, although the time was not the subject of the evaluation, and the climbing pattern was different in the animals. Old resistance plus supplement and old supplement groups received 1 ml of supplement 5 times per week by oral gavage in addition to standard feeding, 1 to 2 h post training sessions. Forty-eight hours after the end of the training program, 3 ml of blood samples were taken, and all rats were then sacrificed to achieve muscle samples. After 8 weeks of training, total antioxidant capacity and superoxide dismutase activity levels increased in both interventions. A synergistic effect of supplement with resistance training was observed for total antioxidant capacity, superoxide dismutase, and PTEN-induced kinase 1. Sestrin 2 decreased in intervention groups. These results suggest that resistance training plus supplement can boost antioxidant defense and mitophagy while potentially decreasing muscle strength loss.
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Affiliation(s)
- Majid Mohabbat
- Department of Exercise Physiology, Faculty of Sport Sciences, University of Guilan, P.O. Box: 41635-1438, Rasht, Iran
| | - Hamid Arazi
- Department of Exercise Physiology, Faculty of Sport Sciences, University of Guilan, P.O. Box: 41635-1438, Rasht, Iran.
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Chen J, Song W, Zhang W. The emerging role of copper in depression. Front Neurosci 2023; 17:1230404. [PMID: 37609453 PMCID: PMC10440608 DOI: 10.3389/fnins.2023.1230404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 07/24/2023] [Indexed: 08/24/2023] Open
Abstract
Copper (Cu) is an essential trace element in the brain and serves as an important cofactor for numerous enzymes involved in a wide range of biochemical processes including neurobehavioral, mitochondrial respiration, and antioxidant effects. Recent studies have demonstrated that copper dyshomeostasis is tightly associated with the development of depression by inducing oxidative stress and inflammatory responses. However, these findings have remained controversial so far. Cumulative studies have shown a positive association, while some other studies showed no association and even a negative association between serum/plasma copper level and depression. Based on these conflicted results, the association was speculated to be due to the clinical features of the population, stages of the disease, severity of copper excess, and types of specimens detected in these studies. In addition, there was an inverse association between dietary copper intake and depression. Furthermore, increasing copper intake could influence dietary zinc and iron intake to prevent and treat depression. Thus, copper supplementation may be a good measure to manage depression. This review provided a deeper understanding of the potential applicability of copper in the prevention and treatment of depression.
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Affiliation(s)
| | | | - Wenzhou Zhang
- Department of Pharmacy, Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Henan Engineering Research Center for Tumor Precision Medicine and Comprehensive Evaluation, Henan Provincial Key Laboratory of Anticancer Drug Research, Zhengzhou, China
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4
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Kozak J, Jonak K. Association between the antioxidant properties of SESN proteins and anti-cancer therapies. Amino Acids 2023:10.1007/s00726-023-03281-6. [PMID: 37284849 PMCID: PMC10372130 DOI: 10.1007/s00726-023-03281-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 05/17/2023] [Indexed: 06/08/2023]
Abstract
Since the beginning of SESN protein development, they have attracted highly progressive attention due to their regulatory role in multiple signalling pathways. Through their antioxidant activity and autophagy regulation implication, they can function as powerful antioxidants to reduce oxidative stress in cells. SESN proteins received special attention in the field of regulation of reactive oxygen species level in the cell and its interplay with signalling pathways determining energy and nutrient homeostasis. Since perturbations in these pathways are implicated in cancer onset and development, SESNs might constitute potential novel therapeutic targets of broad interest. In this review, we discuss the impact of SESN proteins on anti-cancer therapy based on naturally occurring compounds and conventionally used drugs that influence oxidative stress and autophagy-induced cellular signalling pathways. The significant changes in reactive oxygen species level and nutrient status in cancer cells generate subsequent biological effect through the regulation of SESN-dependent pathways. Thus, SESN may serve as the key molecule for regulating anti-cancer drugs' induced cellular response.
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Affiliation(s)
- Joanna Kozak
- Chair of Fundamental Sciences, Department of Human Anatomy, Medical University of Lublin, Kazimierza Jaczewskiego 4, 20-090, Lublin, Poland.
| | - Katarzyna Jonak
- Department of Foreign Languages, Interfaculty Centre for Didactics, Medical University of Lublin, 20-081, Lublin, Poland
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Guan D, Zhao L, Shi X, Ma X, Chen Z. Copper in cancer: From pathogenesis to therapy. Biomed Pharmacother 2023; 163:114791. [PMID: 37105071 DOI: 10.1016/j.biopha.2023.114791] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/12/2023] [Accepted: 04/24/2023] [Indexed: 04/29/2023] Open
Abstract
One of the basic trace elements for the structure and metabolism of human tissue is copper. However, as a heavy metal, excessive intake or abnormal accumulation of copper in the body can cause inevitable damage to the organism because copper can result in direct injury to various cell components or disruption of the redox balance, eventually leading to cell death. Interestingly, a growing body of research reports that diverse cancers have raised serum and tumor copper levels. Tumor cells depend on more copper for their metabolism than normal cells, and a decrease in copper or copper overload can have a detrimental effect on tumor cells. New modalities for identifying and characterizing copper-dependent signals offer translational opportunities for tumor therapy, but their mechanisms remain unclear. Therefore, this article summarizes what we currently know about the correlation between copper and cancer and describes the characteristics of copper metabolism in tumor cells and the prospective application of copper-derived therapeutics.
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Affiliation(s)
- Defeng Guan
- The First Clinical Medical School of Lanzhou University, Lanzhou, China; The First Hospital of Lanzhou University, Lanzhou, China; Gansu key Laboratory of Reproductive Medicine and Embryology, Lanzhou, China
| | - Lihui Zhao
- The First Clinical Medical School of Lanzhou University, Lanzhou, China; The First Hospital of Lanzhou University, Lanzhou, China; Gansu key Laboratory of Reproductive Medicine and Embryology, Lanzhou, China
| | - Xin Shi
- The First Clinical Medical School of Lanzhou University, Lanzhou, China; The First Hospital of Lanzhou University, Lanzhou, China; Gansu key Laboratory of Reproductive Medicine and Embryology, Lanzhou, China
| | - Xiaoling Ma
- The First Clinical Medical School of Lanzhou University, Lanzhou, China; The First Hospital of Lanzhou University, Lanzhou, China; Gansu key Laboratory of Reproductive Medicine and Embryology, Lanzhou, China.
| | - Zhou Chen
- The First Clinical Medical School of Lanzhou University, Lanzhou, China; The First Hospital of Lanzhou University, Lanzhou, China.
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Chen Z, Wang F, Zhang W, Zhou S, Wen D, Mu R. Polysaccharides from Bletilla striata protect against mercury-induced gastrointestinal toxicology in adult Drosophila melanogaster via modulation of sestrin. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 253:114693. [PMID: 36848760 DOI: 10.1016/j.ecoenv.2023.114693] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 02/11/2023] [Accepted: 02/23/2023] [Indexed: 06/18/2023]
Abstract
Oxidative stress was one of the major causes of heavy metal-induced toxicity in organisms. The polysaccharide from Bletilla striata (Orchidaceae) (BSP) has been recently recognized as a novel player in the management of oxidative stress response in organisms. Here, we took the midgut of adult Drosophila melanogaster (Diptera: Drosophilidae) (D. melanogaster), a functional equivalent to the mammalian intestine and stomach, as a model to evaluate the protective effects of BSP (50 μg/mL) on mercuric chloride-induced gastrointestinal toxicology in insects. As a result, BSP exposure significantly improved the survival rates and climbing ability of adult flies exposed to mercury. Further study demonstrated that BSP significantly alleviated the mercury-induced oxidative injury to midgut epithelium, at least partly, through increasing antioxidant enzyme activity (glutathione-S-transferase and superoxide dismutase), decreasing reactive oxidative species production, inhibiting cell death, restoring intestinal epithelial barrier and regulating intestinal stem cell-mediated tissue regeneration. Additionally, sestrin, an oxidative-stress gene, was required in mediating the protection of BSP against mercury-induced oxidative damage to midgut. This study suggested that BSP has great potential for future application in the treatment and prevention of heavy metal-induced gastrointestinal adversities in mammals.
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Affiliation(s)
- Zhi Chen
- College of Biological Science and Agriculture, Qiannan Normal University for Nationalities, Duyun 558000, China.
| | - Fen Wang
- College of Biological Science and Agriculture, Qiannan Normal University for Nationalities, Duyun 558000, China
| | - Wen Zhang
- College of Biological Science and Agriculture, Qiannan Normal University for Nationalities, Duyun 558000, China
| | - Shuangshuang Zhou
- College of Biological Science and Agriculture, Qiannan Normal University for Nationalities, Duyun 558000, China
| | - Di Wen
- College of Biological Science and Agriculture, Qiannan Normal University for Nationalities, Duyun 558000, China.
| | - Ren Mu
- College of Biological Science and Agriculture, Qiannan Normal University for Nationalities, Duyun 558000, China.
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Lu C, Jiang Y, Xu W, Bao X. Sestrin2: multifaceted functions, molecular basis, and its implications in liver diseases. Cell Death Dis 2023; 14:160. [PMID: 36841824 PMCID: PMC9968343 DOI: 10.1038/s41419-023-05669-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 02/08/2023] [Accepted: 02/09/2023] [Indexed: 02/26/2023]
Abstract
Sestrin2 (SESN2), a highly conserved stress-responsive protein, can be triggered by various noxious stimuli, such as hypoxia, DNA damage, oxidative stress, endoplasmic reticulum (ER) stress, and inflammation. Multiple transcription factors regulate SESN2 expression, including hypoxia-inducible factor 1 (HIF-1), p53, nuclear factor E2-related factor 2 (Nrf2), activating transcription factor 4 (ATF4), ATF6, etc. Upon induction, SESN2 generally leads to activation of adenosine monophosphate-activated protein kinase (AMPK) and inhibition of mechanistic target of rapamycin complex 1 (mTORC1). To maintain cellular homeostasis, SESN2 and its downstream molecules directly scavenge reactive oxygen species or indirectly influence the expression patterns of key genes associated with redox, macroautophagy, mitophagy, ER stress, apoptosis, protein synthesis, and inflammation. In liver diseases including acute liver injury, fatty liver diseases, hepatic fibrosis, and hepatocellular carcinoma (HCC), SESN2 is abnormally expressed and correlated with disease progression. In NAFLD, SESN2 helps with postponing disease progression through balancing glycolipid metabolism and macroautophagy (lipophagy), and rectifying oxidative damage and ER stress. During hepatic fibrosis, SESN2 represses HSCs activation and intrahepatic inflammation, hindering the occurrence and progress of fibrogenesis. However, the role of SESN2 in HCC is controversial due to its paradoxical pro-autophagic and anti-apoptotic effects. In conclusion, this review summarizes the biological functions of SESN2 in hypoxia, genotoxic stress, oxidative stress, ER stress, and inflammation, and specifically emphasizes the pathophysiological significance of SESN2 in liver diseases, aiming to providing a comprehensive understanding for SESN2 as a potential therapeutic target in liver diseases.
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Affiliation(s)
- Chunfeng Lu
- grid.260483.b0000 0000 9530 8833School of Pharmacy, Nantong University, 226001 Nantong, Jiangsu China
| | - Yiming Jiang
- grid.260483.b0000 0000 9530 8833School of Pharmacy, Nantong University, 226001 Nantong, Jiangsu China
| | - Wenxuan Xu
- School of Life Science and Technology, China Pharmaceutical University, 210009, Nanjing, Jiangsu, China.
| | - Xiaofeng Bao
- School of Pharmacy, Nantong University, 226001, Nantong, Jiangsu, China.
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Ala M. Sestrin2 Signaling Pathway Regulates Podocyte Biology and Protects against Diabetic Nephropathy. J Diabetes Res 2023; 2023:8776878. [PMID: 36818747 PMCID: PMC9937769 DOI: 10.1155/2023/8776878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/22/2022] [Accepted: 02/04/2023] [Indexed: 02/12/2023] Open
Abstract
Sestrin2 regulates cell homeostasis and is an upstream signaling molecule for several signaling pathways. Sestrin2 leads to AMP-activated protein kinase- (AMPK-) and GTPase-activating protein activity toward Rags (GATOR) 1-mediated inhibition of mammalian target of rapamycin complex 1 (mTORC1), thereby enhancing autophagy. Sestrin2 also improves mitochondrial biogenesis via AMPK/Sirt1/peroxisome proliferator-activated receptor-gamma coactivator 1 alpha (PGC-1α) signaling pathway. Blockade of ribosomal protein synthesis and augmentation of autophagy by Sestrin2 can prevent misfolded protein accumulation and attenuate endoplasmic reticulum (ER) stress. In addition, Sestrin2 enhances P62-mediated autophagic degradation of Keap1 to release nuclear factor erythroid 2-related factor 2 (Nrf2). Nrf2 release by Sestrin2 vigorously potentiates antioxidant defense in diabetic nephropathy. Impaired autophagy and mitochondrial biogenesis, severe oxidative stress, and ER stress are all deeply involved in the development and progression of diabetic nephropathy. It has been shown that Sestrin2 expression is lower in the kidney of animals and patients with diabetic nephropathy. Sestrin2 knockdown aggravated diabetic nephropathy in animal models. In contrast, upregulation of Sestrin2 enhanced autophagy, mitophagy, and mitochondrial biogenesis and suppressed oxidative stress, ER stress, and apoptosis in diabetic nephropathy. Consistently, overexpression of Sestrin2 ameliorated podocyte injury, mesangial proliferation, proteinuria, and renal fibrosis in animal models of diabetic nephropathy. By suppressing transforming growth factor beta (TGF-β)/Smad and Yes-associated protein (YAP)/transcription enhancer factor 1 (TEF1) signaling pathways in experimental models, Sestrin2 hindered epithelial-mesenchymal transition and extracellular matrix accumulation in diabetic kidneys. Moreover, modulation of the downstream molecules of Sestrin2, for instance, augmentation of AMPK or Nrf2 signaling and inhibition of mTORC1, has been protective in diabetic nephropathy. Regarding the beneficial effects of Sestrin2 on diabetic nephropathy and its interaction with several signaling molecules, it is worth targeting Sestrin2 in diabetic nephropathy.
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Affiliation(s)
- Moein Ala
- School of Medicine, Tehran University of Medical Sciences (TUMS), Tehran, Iran
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Oxidative Stress-Induced Protein of SESTRIN2 in Cardioprotection Effect. DISEASE MARKERS 2022; 2022:7439878. [PMID: 35937943 PMCID: PMC9355779 DOI: 10.1155/2022/7439878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 06/12/2022] [Accepted: 07/16/2022] [Indexed: 12/02/2022]
Abstract
Because of the rich mitochondria and high energy metabolic requirements, excessive oxidative stress generated by ROS is a key pathogenic mechanism in heart disease. SESTRIN2, the well-known antioxidant protein, plays a vital role in diminishing the production and accumulation of ROS, thus sparing cells from oxidative damage. From this new perspective, we first examine SESTRIN2 structure-function relationships; then, we describe how SESTRIN2 expression is regulated under oxidative stress conditions, emphasizing SESTRIN2's antioxidant mechanism via multiple signal transductions; and finally, we discuss SESTRIN2's role in a variety of oxidative stress-related cardiac diseases, including age-related heart disease, diabetic cardiomyopathy, ischemia-reperfusion myocardial injury, septic cardiomyopathy, and chronic cardiac insufficiency. The goal of this review is to identify the SESTRIN2 protein as a potential biomarker and new therapy target for oxidative stress-related cardiac diseases.
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Zhu S, Chen Z, Liang Q. TRAF3 promoted ROS-induced oxidative stress in model of cardiac infarction through the regulation of ULK1 ubiquitination. Clin Exp Hypertens 2022; 44:403-410. [PMID: 35318880 DOI: 10.1080/10641963.2022.2055766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBEJECTIVES Cardiac infarction is a dynamic, nonlinear and unpredictable course of disease, and who die of acute myocardial infarction, and coronary thrombosis. TRAF3 provide novel targets for the clinical prevention and treatment for tumors, viral infection, and so on.We investigated the mechanisms of TRAF3 gene, which plays a possible role in cardiac infarction and contributes to the pathogenesis of cardiac infarction-induced oxidative stress. METHODS Serum samples of patients with cardiac infarction and normal healthy volunteers were obtained from the 920 Hospital of PLA joint service support force. C57BL/6 mice were ligated and H9C2 cells were induced with 1% O2,5%CO2 and 94% N2. RESULTS The mRNA expression levels of TRAF3 in patients with cardiac infarction were increased, compared to healthy volunteers. Serum mRNA of TRAF3 was in positive correlation with serum CK levels in patients with cardiac infarction. Over-expression of TRAF3 heightened ROS-induced oxidative stress in vitro model of cardiac infarction. Then, TRAF3 recombinant protein could promote oxidative stress and aggravated cardiac infarction in mice model. Over-expression of TRAF3 induced ULK1 protein expression and reduced ULK1 ubiquitination in vitro model. The activation of ULK1 reduced the effects of TRAF3 on oxidative stress in vitro model of cardiac infarction. Meanwhile, the inhibition of ULK1 reversed the effects of si-TRAF3 on oxidative stress in vitro model of cardiac infarction. CONCLUSIONS This study identified that TRAF3 promoted ROS-induced oxidative stress in model of cardiac infarction through the regulation of ULK1 ubiquitination, which could potentially give rise to a new strategy for the treatment of cardiac infarction.
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Affiliation(s)
- Shaobing Zhu
- Department of Emergency, 920 Hospital of PLA joint service support force, Kunming, YN, China
| | - Zhenyu Chen
- Department of Emergency, 920 Hospital of PLA joint service support force, Kunming, YN, China
| | - Qilin Liang
- Department of Emergency, 920 Hospital of PLA joint service support force, Kunming, YN, China
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Hsieh YH, Chao AC, Lin YC, Chen SD, Yang DI. The p53/NF-kappaB-dependent induction of sestrin2 by amyloid-beta peptides exerts antioxidative actions in neurons. Free Radic Biol Med 2021; 169:36-61. [PMID: 33852931 DOI: 10.1016/j.freeradbiomed.2021.04.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 03/24/2021] [Accepted: 04/04/2021] [Indexed: 12/30/2022]
Abstract
Accumulation of senile plaques mainly composed of neurotoxic amyloid-beta peptide (Aβ) is a pathological hallmark of Alzheimer's disease (AD). Sestrin2 inducible by various types of stressors is known to promote autophagy and exert antioxidative effects. In this work, we revealed the molecular mechanisms underlying Aβ induction of sestrin2 and tested whether antioxidation, in addition to autophagy regulation, also contributes to its neuroprotective effects in primary rat cortical neurons. We found that Aβ25-35 triggered nuclear translocation of p65 and p50, two subunits of nuclear factor-kappaB (NF-κB), and p53. Aβ25-35-induced sestrin2 expression was abolished by the p65 siRNA, the NF-κB inhibitor SN50, and the p53 inhibitor pifithrin-alpha (PFT-α). Further, Aβ25-35 enhanced binding of p50 and p53 to sestrin2 gene promoter that was abolished respectively by the p50 shRNA and PFT-α. Both p50 shRNA and PFT-α attenuated Aβ25-35-induced expression as well as nuclear translocation of all three transcription factors, namely p65, p50, and p53. Interestingly, p50 binding to the promoters of its target genes required p53 activity, whereas p50 also negatively regulated p53 binding to its target sequences. Suppression of sestrin2 expression by siRNA enhanced Aβ25-35- and Aβ1-42-induced production of reactive oxygen species (ROS), lipid peroxidation, and formation of 8-hydroxy-2-deoxyguanosine (8-OH-dG). In contrast, overexpression of the sestrin2 N-terminal or C-terminal fragments neutralized Aβ25-35-induced ROS production. We concluded that Aβ-induced sestrin2 contributing to antioxidant effects in neurons is in part mediated by p53 and NF-κB, which also mutually affect the expression of each other.
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Affiliation(s)
- Yi-Heng Hsieh
- Institute of Brain Science, National Yang Ming Chiao Tung University, Taipei City, 112, Taiwan; Institute of Brain Science, National Yang-Ming University, Taipei City, 112, Taiwan
| | - A-Ching Chao
- Department of Neurology, College of Medicine, Kaohsiung Medical University, Kaohsiung City, 807, Taiwan; Department of Neurology, Kaohsiung Medical University Hospital, Kaohsiung City, 807, Taiwan
| | - Yi-Chun Lin
- Department of Neurology, Taipei City Hospital, Taipei City, 106, Taiwan
| | - Shang-Der Chen
- Department of Neurology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung City, 833, Taiwan; Institute for Translation Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung City, 833, Taiwan
| | - Ding-I Yang
- Institute of Brain Science, National Yang Ming Chiao Tung University, Taipei City, 112, Taiwan; Institute of Brain Science, National Yang-Ming University, Taipei City, 112, Taiwan; Brain Research Center, National Yang Ming Chiao Tung University, Taipei City, 112, Taiwan.
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12
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Yin S, Liu L, Gan W. The Roles of Post-Translational Modifications on mTOR Signaling. Int J Mol Sci 2021; 22:ijms22041784. [PMID: 33670113 PMCID: PMC7916890 DOI: 10.3390/ijms22041784] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/05/2021] [Accepted: 02/08/2021] [Indexed: 02/06/2023] Open
Abstract
The mechanistic target of rapamycin (mTOR) is a master regulator of cell growth, proliferation, and metabolism by integrating various environmental inputs including growth factors, nutrients, and energy, among others. mTOR signaling has been demonstrated to control almost all fundamental cellular processes, such as nucleotide, protein and lipid synthesis, autophagy, and apoptosis. Over the past fifteen years, mapping the network of the mTOR pathway has dramatically advanced our understanding of its upstream and downstream signaling. Dysregulation of the mTOR pathway is frequently associated with a variety of human diseases, such as cancers, metabolic diseases, and cardiovascular and neurodegenerative disorders. Besides genetic alterations, aberrancies in post-translational modifications (PTMs) of the mTOR components are the major causes of the aberrant mTOR signaling in a number of pathologies. In this review, we summarize current understanding of PTMs-mediated regulation of mTOR signaling, and also update the progress on targeting the mTOR pathway and PTM-related enzymes for treatment of human diseases.
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Wang B J, Wang S, Xiao M, Zhang J, Wang A J, Guo Y, Tang Y, Gu J. Regulatory mechanisms of Sesn2 and its role in multi-organ diseases. Pharmacol Res 2020; 164:105331. [PMID: 33285232 DOI: 10.1016/j.phrs.2020.105331] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/20/2020] [Accepted: 11/21/2020] [Indexed: 02/07/2023]
Abstract
Sestrin2 (Sesn2) is a powerful anti-oxidant that can prevent acute and chronic diseases. The role of Sesn2 has been thoroughly reviewed in liver, nervous system, and immune system diseases. However, there is a limited number of reviews that have summarized the effects of Sesn2 in heart and vascular diseases, and very less literature-based information is available on involvement of Sesn2 in renal and respiratory pathologies. This review summarizes the latest research on Sesn2 in multi-organ stress responses, with a particular focus on the protective role of Sesn2 in cardiovascular, respiratory, and renal diseases, emphasizing the potential therapeutic benefit of targeting Sesn2 in stress-related diseases.
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Affiliation(s)
- Jie Wang B
- School of Nursing, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
| | - Shudong Wang
- Department of Cardiology at the First Hospital of Jilin University, Changchun, Jilin, 130021, China
| | - Mengjie Xiao
- School of Nursing, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
| | - Jingjing Zhang
- Department of Cardiology at the First Hospital of China Medical University, Department of Cardiology at the People's Hospital of Liaoning Province, Shenyang, Liaoning, 110016, China
| | - Jie Wang A
- School of Nursing, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
| | - Yuanfang Guo
- School of Nursing, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
| | - Yufeng Tang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong, 250014, China
| | - Junlian Gu
- School of Nursing, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China.
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14
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Ro SH, Fay J, Cyuzuzo CI, Jang Y, Lee N, Song HS, Harris EN. SESTRINs: Emerging Dynamic Stress-Sensors in Metabolic and Environmental Health. Front Cell Dev Biol 2020; 8:603421. [PMID: 33425907 PMCID: PMC7794007 DOI: 10.3389/fcell.2020.603421] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 11/12/2020] [Indexed: 12/21/2022] Open
Abstract
Proper timely management of various external and internal stresses is critical for metabolic and redox homeostasis in mammals. In particular, dysregulation of mechanistic target of rapamycin complex (mTORC) triggered from metabolic stress and accumulation of reactive oxygen species (ROS) generated from environmental and genotoxic stress are well-known culprits leading to chronic metabolic disease conditions in humans. Sestrins are one of the metabolic and environmental stress-responsive groups of proteins, which solely have the ability to regulate both mTORC activity and ROS levels in cells, tissues and organs. While Sestrins are originally reported as one of several p53 target genes, recent studies have further delineated the roles of this group of stress-sensing proteins in the regulation of insulin sensitivity, glucose and fat metabolism, and redox-function in metabolic disease and aging. In this review, we discuss recent studies that investigated and manipulated Sestrins-mediated stress signaling pathways in metabolic and environmental health. Sestrins as an emerging dynamic group of stress-sensor proteins are drawing a spotlight as a preventive or therapeutic mechanism in both metabolic stress-associated pathologies and aging processes at the same time.
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Affiliation(s)
- Seung-Hyun Ro
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, United States
| | - Julianne Fay
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, United States
| | - Cesar I Cyuzuzo
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, United States
| | - Yura Jang
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, United States.,Department of Neurology, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Naeun Lee
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, NE, United States
| | - Hyun-Seob Song
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, NE, United States.,Department of Food Science and Technology, Nebraska Food for Health Center, University of Nebraska-Lincoln, Lincoln, NE, United States
| | - Edward N Harris
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, United States
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