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Giri P, Desai D, Dwivedi M. Animal models unraveling the complexity of vitiligo pathogenesis. Autoimmun Rev 2024; 23:103515. [PMID: 38185189 DOI: 10.1016/j.autrev.2024.103515] [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: 12/21/2023] [Accepted: 01/02/2024] [Indexed: 01/09/2024]
Abstract
Vitiligo is a chronic skin condition marked by the gradual loss of pigmentation, leading to the emergence of white or depigmented patches on the skin. The exact cause of vitiligo remains not entirely understood, although it is thought to involve a blend of genetic, autoimmune, and environmental factors. While there is currently no definitive cure for vitiligo, diverse treatments exist that may assist in managing the condition and fostering repigmentation in specific instances. Animal models play a pivotal role in comprehending the intricate mechanisms that underlie vitiligo, providing valuable insights into the progression and onset of the disease, as well as potential therapeutic interventions. Although induced experimental models lack the nuanced characteristics observed in natural experimental models, relying solely on a single animal model might not fully capture the intricate pathogenesis of vitiligo. Different animal models simulate specific aspects of human vitiligo pathogenesis to varying degrees. This review extensively explores the array of animal models utilized in vitiligo research, shedding light on their respective advantages, disadvantages, and applications.
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Affiliation(s)
- Prashant Giri
- C. G. Bhakta Institute of Biotechnology, Faculty of Science, Uka Tarsadia University, Bardoli, Surat 394 350, Gujarat, India
| | - Dharm Desai
- C. G. Bhakta Institute of Biotechnology, Faculty of Science, Uka Tarsadia University, Bardoli, Surat 394 350, Gujarat, India
| | - Mitesh Dwivedi
- C. G. Bhakta Institute of Biotechnology, Faculty of Science, Uka Tarsadia University, Bardoli, Surat 394 350, Gujarat, India.
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Li C, Zhang Y, Deng Y, Chen Y, Wu C, Zhao X, Chen X, Wang X, Zhou Y, Zhang X, Tian N. Fisetin suppresses ferroptosis through Nrf2 and attenuates intervertebral disc degeneration in rats. Eur J Pharmacol 2024; 964:176298. [PMID: 38145645 DOI: 10.1016/j.ejphar.2023.176298] [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: 07/15/2023] [Revised: 12/19/2023] [Accepted: 12/20/2023] [Indexed: 12/27/2023]
Abstract
Low back pain, primarily caused by intervertebral disc degeneration (IVDD), lacks effective pharmacological treatments. Oxidative stress has been identified as a significant contributor to IVDD. This study aims to establish an in vitro model of IVDD induced by oxidative stress and identify potential therapeutic agents and their underlying mechanisms. By screening the natural product library, fisetin emerged as the most promising compound in suppressing cell death induced by oxidative stress in nucleus pulposus cells (NPCs). Furthermore, our investigation revealed that the cell death induced by oxidative stress was predominantly associated with ferroptosis, and fisetin demonstrated the ability to inhibit ferroptosis in NPCs. Mechanistic exploration suggested that the impact of fisetin on ferroptosis may be mediated through the Nrf2/HO-1 (Nuclear factor erythroid 2-related factor 2/heme oxygenase-1) axis. Notably, the in vivo study demonstrated that fisetin could alleviate IVDD in rats. These findings highlight fisetin as a potential therapeutic option for IVDD and implicate the involvement of the Nrf2/HO-1 pathway in its mechanism of action.
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Affiliation(s)
- Chenchao Li
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325088, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325035, Zhejiang Province, China
| | - Yekai Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325088, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325035, Zhejiang Province, China
| | - Yuxin Deng
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325088, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325035, Zhejiang Province, China
| | - Yu Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325088, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325035, Zhejiang Province, China
| | - Chenyu Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325088, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325035, Zhejiang Province, China
| | - Xiaoying Zhao
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325088, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325035, Zhejiang Province, China
| | - Ximiao Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325088, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325035, Zhejiang Province, China
| | - Xiangyang Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325088, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325035, Zhejiang Province, China; Chinese Orthopaedic Regenerative Medicine Society, Hangzhou, 310000, Zhejiang Province, China
| | - Yifei Zhou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325088, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325035, Zhejiang Province, China; Chinese Orthopaedic Regenerative Medicine Society, Hangzhou, 310000, Zhejiang Province, China
| | - Xiaolei Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325088, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325035, Zhejiang Province, China; Chinese Orthopaedic Regenerative Medicine Society, Hangzhou, 310000, Zhejiang Province, China.
| | - Naifeng Tian
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325088, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325035, Zhejiang Province, China; Chinese Orthopaedic Regenerative Medicine Society, Hangzhou, 310000, Zhejiang Province, China.
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Qiang J, Yang R, Li X, Xu X, Zhou M, Ji X, Lu Y, Dong Z. Monotropein induces autophagy through activation of the NRF2/PINK axis, thereby alleviating sepsis-induced colonic injury. Int Immunopharmacol 2024; 127:111432. [PMID: 38142644 DOI: 10.1016/j.intimp.2023.111432] [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: 10/11/2023] [Revised: 12/04/2023] [Accepted: 12/19/2023] [Indexed: 12/26/2023]
Abstract
Sepsis is a systemic inflammatory disease that is caused by a dysregulated host response to infection and is a life-threatening organ dysfunction that affects many organs, which includes the colon. Mounting evidence suggests that sepsis-induced colonic damage is a major contributor to organ failure and cellular dysfunction. Monotropein (MON) is the major natural compound in the iris glycoside that is extracted from Morendae officinalis radix, which possesses the potent pharmacological activities of anti-inflammatory and antioxidant properties. This research evaluated whether MON is able to alleviate septic colonic injury in mice by cecal ligation and puncture. Colonic tissues were analyzed using histopathology, immunofluorescence, quantitative real-time polymerase chain reaction, and Western blot methods. It was initially discovered that MON reduced colonic damage in infected mice, in addition to inflammation, apoptosis, and oxidative stress in colonic tissues, while it activated autophagy, with the NRF2/keap1 and PINK1/Parkin pathways also being activated. Through the stimulation of NCM460 cells with lipopolysaccharides, an in vitro model of sepsis was created as a means of further elucidating the potential mechanisms of MON. In the in vitro model, it was found that MON could still activate the NRF2/keap1, PINK1/Parkin, and autophagy pathways. However, when MON was paired with the NRF2 inhibitor ML385, it counteracted MON-induced activation of PINK1/Parkin and autophagy, while also promoting inflammatory response and apoptosis in NCM460 cells. Therefore, the data implies that MON could play a therapeutic role through the activation of the NFR2/PINK pathway as a means of inducing autophagy to alleviate the oxidative stress in colonic tissues that is induced by sepsis, which will improve inflammation and apoptosis in colonic tissues.
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Affiliation(s)
- Jingchao Qiang
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China
| | - Rongrong Yang
- Department of Oncology, The Second People's Hospital of Lianyungang (The Oncology Hospital of Lianyungang), Lianyungang 222000, China
| | - Xueqing Li
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China
| | - Xuhui Xu
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China
| | - Mengyuan Zhou
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China
| | - Xiaomeng Ji
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China
| | - Yingzhi Lu
- Department of Oncology, The Second People's Hospital of Lianyungang (The Oncology Hospital of Lianyungang), Lianyungang 222000, China.
| | - Zibo Dong
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China.
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Mathew AR, Di Matteo G, La Rosa P, Barbati SA, Mannina L, Moreno S, Tata AM, Cavallucci V, Fidaleo M. Vitamin B12 Deficiency and the Nervous System: Beyond Metabolic Decompensation-Comparing Biological Models and Gaining New Insights into Molecular and Cellular Mechanisms. Int J Mol Sci 2024; 25:590. [PMID: 38203763 PMCID: PMC10778862 DOI: 10.3390/ijms25010590] [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: 11/27/2023] [Revised: 12/16/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024] Open
Abstract
Vitamin B12 (VitB12) is a micronutrient and acts as a cofactor for fundamental biochemical reactions: the synthesis of succinyl-CoA from methylmalonyl-CoA and biotin, and the synthesis of methionine from folic acid and homocysteine. VitB12 deficiency can determine a wide range of diseases, including nervous system impairments. Although clinical evidence shows a direct role of VitB12 in neuronal homeostasis, the molecular mechanisms are yet to be characterized in depth. Earlier investigations focused on exploring the biochemical shifts resulting from a deficiency in the function of VitB12 as a coenzyme, while more recent studies propose a broader mechanism, encompassing changes at the molecular/cellular levels. Here, we explore existing study models employed to investigate the role of VitB12 in the nervous system, including the challenges inherent in replicating deficiency/supplementation in experimental settings. Moreover, we discuss the potential biochemical alterations and ensuing mechanisms that might be modified at the molecular/cellular level (such as epigenetic modifications or changes in lysosomal activity). We also address the role of VitB12 deficiency in initiating processes that contribute to nervous system deterioration, including ROS accumulation, inflammation, and demyelination. Consequently, a complex biological landscape emerges, requiring further investigative efforts to grasp the intricacies involved and identify potential therapeutic targets.
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Affiliation(s)
- Aimee Rachel Mathew
- Department of Biology and Biotechnologies “Charles Darwin”, Sapienza University of Rome, 00185 Rome, Italy; (A.R.M.); (A.M.T.)
| | - Giacomo Di Matteo
- Department of Chemistry and Technology of Drugs, Sapienza University of Rome, 00185 Rome, Italy; (G.D.M.); (L.M.)
| | - Piergiorgio La Rosa
- Division of Neuroscience, Department of Psychology, Sapienza University of Rome, 00185 Rome, Italy;
- European Center for Brain Research, IRCCS Fondazione Santa Lucia, 00179 Rome, Italy
| | - Saviana Antonella Barbati
- Departmental Faculty of Medicine and Surgery, UniCamillus-Saint Camillus International University of Health Sciences, 00131 Rome, Italy;
| | - Luisa Mannina
- Department of Chemistry and Technology of Drugs, Sapienza University of Rome, 00185 Rome, Italy; (G.D.M.); (L.M.)
| | - Sandra Moreno
- Department of Science, University Roma Tre, 00146 Rome, Italy;
- Laboratory of Neurodevelopment, Neurogenetics and Neuromolecular Biology, IRCCS Fondazione Santa Lucia, 00179 Rome, Italy
| | - Ada Maria Tata
- Department of Biology and Biotechnologies “Charles Darwin”, Sapienza University of Rome, 00185 Rome, Italy; (A.R.M.); (A.M.T.)
- Research Centre of Neurobiology “Daniel Bovet”, Sapienza University of Rome, 00185 Rome, Italy
| | - Virve Cavallucci
- Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, 00168 Rome, Italy;
- Fondazione Policlinico Universitario “A. Gemelli” IRCCS, 00168 Rome, Italy
| | - Marco Fidaleo
- Department of Biology and Biotechnologies “Charles Darwin”, Sapienza University of Rome, 00185 Rome, Italy; (A.R.M.); (A.M.T.)
- Research Center for Nanotechnology Applied to Engineering (CNIS), Sapienza University of Rome, 00185 Rome, Italy
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Chen W, Chen R, Zheng M, Li D, Lu L. Protective effect of scorpion venom oligopeptides in human umbilical vein endothelial cells under benzo(α)pyrene exposure. Nat Prod Res 2023:1-8. [PMID: 37746838 DOI: 10.1080/14786419.2023.2261609] [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: 06/24/2023] [Accepted: 09/16/2023] [Indexed: 09/26/2023]
Abstract
Inflammation and oxidative stress play pivotal role in the process of atherosclerosis. Scorpion venom is widely used as anti-cancer agent, however, the anti-inflammatory and antioxidant activities of scorpion venom peptides (SVPs) are rarely explored. In the current study, seven novel SVPs were isolated in a protective activity tracking isolation method in a cell model of benzo(α)pyrene (BaP)-induced human umbilical vein endothelial cells (HUVECs). The current study showed that SVP-1 [Tyr-Thr-Trp-Glu-Ala] significantly attenuated BaP-induced reactive oxygen species (ROS) over-production and inflammatory cytokines (IL-6, IL-1β, TNF-α, NO and PGE2) over-expression. Furthermore, SVP-1 attenuated BaP-induced adhesion molecules over-expression and inhibited the NF-κB and AhR signalling pathways activation. Collectively, the present study, for the first time, shows that SVPs inhibit the NF-κB and AhR signalling pathways in HUVECs under BaP-exposure, which strongly suggests the therapeutic potential of SVPs against atherosclerosis.
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Affiliation(s)
- Wei Chen
- The Third Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Ruimin Chen
- The 960th Hospital of PLA Joint Logistics Support Force, Jinan, China
| | - Man Zheng
- Dongying People's Hospital, Dongying, China
| | - Daixu Li
- The Third Affiliated Hospital of Shandong First Medical University, Jinan, China
- The Fourth People's Hospital of Jinan, Jinan, China
| | - Lin Lu
- The Third Affiliated Hospital of Shandong First Medical University, Jinan, China
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Huang Y, Su Y, Qin R, Wang L, Zhang Z, Huang W, Fan X, Yao Y, Wang H. Mechanism by which oleracein E alleviates TNBS-induced ulcerative colitis. Eur J Gastroenterol Hepatol 2023; 35:854-864. [PMID: 37395238 PMCID: PMC10309113 DOI: 10.1097/meg.0000000000002597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 04/05/2023] [Indexed: 07/04/2023]
Abstract
OBJECTIVE This study aimed to investigate the effect of oleracein E (OE) in improving 2,4,6-trinitrobenzene sulfonic acid (TNBS)-induced ulcerative colitis (UC). METHODS Lipopolysaccharide (LPS) was used to induce a UC cell model, and TNBS was used to induce a UC rat model. ELISA was performed to assess the levels of inflammatory factors (IL-1β, TNF-α, and IL-6). Moreover, the activities of catalase (CAT), myeloperoxidase (MPO), and malonaldehyde (MDA) were detected by kits. Western blotting was performed to assess related proteins of the Nrf2/HO-1 signaling pathway, tight junction protein (ZO-1, Occludin, and claudin-2) expression levels, and apoptosis-related proteins (Bcl2, Bax, and cleaved caspase 3). Flow cytometry was used to analyze ROS levels. The morphology of colon tissues and the apoptosis of cells were detected by HE and TUNEL staining, respectively. RESULTS OE significantly increased the activity of CAT and decreased the activity of MPO in LPS-induced Caco-2 cells and TNBS-induced UC rats. However, the levels of IL-1β, IL-6, and TNF-α were markedly reduced both in vivo and in vitro. In addition, OE significantly increased the levels of Nrf2/HO-1 signaling pathway-related proteins and tight junction proteins and inhibited cell apoptosis. HE staining showed that OE significantly decreased the severity of acute TNBS-induced colitis in rats. CONCLUSION OE may exert a regulatory effect on ameliorating intestinal barrier injury and reducing inflammation and oxidative stress levels by activating the Nrf2/HO-1 pathway.
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Affiliation(s)
- Yun Huang
- Department of Gastroenterology, Affiliated Yan’an Hospital of Kunming Medical University
- Key Laboratory of Tumor Immunological Prevention and Treatment of Yunnan Province, Kunming City, Yunnan Province, China
| | - Yu Su
- Department of Gastroenterology, Affiliated Yan’an Hospital of Kunming Medical University
| | - Rong Qin
- Department of Gastroenterology, Affiliated Yan’an Hospital of Kunming Medical University
| | - Likun Wang
- Department of Gastroenterology, Affiliated Yan’an Hospital of Kunming Medical University
| | - Zhibo Zhang
- Department of Gastroenterology, Affiliated Yan’an Hospital of Kunming Medical University
| | - Weikang Huang
- Department of Gastroenterology, Affiliated Yan’an Hospital of Kunming Medical University
| | - Xirui Fan
- Department of Gastroenterology, Affiliated Yan’an Hospital of Kunming Medical University
| | - Ying Yao
- Department of Gastroenterology, Affiliated Yan’an Hospital of Kunming Medical University
| | - Hui Wang
- Department of Gastroenterology, Affiliated Yan’an Hospital of Kunming Medical University
- Key Laboratory of Tumor Immunological Prevention and Treatment of Yunnan Province, Kunming City, Yunnan Province, China
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1,2,4,5-Tetrazine-tethered probes for fluorogenically imaging superoxide in live cells with ultrahigh specificity. Nat Commun 2023; 14:1401. [PMID: 36918556 PMCID: PMC10014963 DOI: 10.1038/s41467-023-37121-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 03/01/2023] [Indexed: 03/16/2023] Open
Abstract
Superoxide (O2·-) is the primary reactive oxygen species in mammal cells. Detecting superoxide is crucial for understanding redox signaling but remains challenging. Herein, we introduce a class of activity-based sensing probes. The probes utilize 1,2,4,5-tetrazine as a superoxide-responsive trigger, which can be modularly tethered to various fluorophores to tune probe sensitivity and emission color. These probes afford ultra-specific and ultra-fluorogenic responses towards superoxide, and enable multiplexed imaging of various cellular superoxide levels in an organelle-resolved way. Notably, the probes reveal the aberrant superoxide generation in the pathology of myocardial ischemia/reperfusion injury, and facilitate the establishment of a high-content screening pipeline for mediators of superoxide homeostasis. One such identified mediator, coprostanone, is shown to effectively ameliorating oxidative stress-induced injury in mice with myocardial ischemia/reperfusion injury. Collectively, these results showcase the potential of 1,2,4,5-tetrazine-tethered probes as versatile tools to monitor superoxide in a range of pathophysiological settings.
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Tang X, Xiong K, Li M. Effects of dietary epidermal growth factor supplementation on liver antioxidant capacity of piglets with intrauterine growth retardation. J Anim Sci 2023; 101:skad323. [PMID: 37812936 PMCID: PMC10576518 DOI: 10.1093/jas/skad323] [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: 07/04/2023] [Accepted: 10/10/2023] [Indexed: 10/11/2023] Open
Abstract
The present experiment was conducted to study the effects of dietary epidermal growth factor (EGF) supplementation on the liver antioxidant capacity of piglets with intrauterine growth retardation (IUGR). The present study consists of two experiments. In experiment 1, six normal-birth-weight (NBW) and six IUGR newborn piglets were slaughtered within 2 to 4 h after birth to compare the effects of IUGR on the liver antioxidant capacity of newborn piglets. The results showed that compared with NBW piglets, IUGR piglets had a lower birth weight and liver relative weight; IUGR piglets had a higher serum malondialdehyde (MDA) level, liver MDA level and hydrogen peroxide (H2O2) level, and had a lower liver total antioxidant capacity (T-AOC) level and glutathione peroxidase (GSH-Px) activity; IUGR trended to increase serum alanine aminotransferase activity, aspartate aminotransferase activity, and H2O2 level, and trended to decrease liver total superoxide dismutase activity. In experiment 2, six NBW piglets, and 12 IUGR piglets weaned at 21 d of age were randomly divided into the NC group (NBW piglets fed with basal diet); IC group (IUGR piglets fed with basal diet), and IE group (IUGR piglets fed with basal diet plus 2 mg/kg EGF), and feeding for 14 d. Organ index, serum parameters, liver antioxidant capacity, and liver antioxidant-related genes expression were measured. The results showed that compared to the IC group, dietary EGF supplementation (IE group) significantly reduced serum malondialdehyde level and H2O2 level, and liver protein carbonyl (PC) level and 8-hydroxydeoxyguanosine level of piglets with IUGR; dietary EGF supplementation (IE group) significantly increased serum T-AOC level, liver T-AOC level and GSH-Px activity; dietary supplemented with EGF (IE group) enhanced liver Nrf2, NQO1, HO1, and GPX1 mRNA expression compared to IC group. Pearson's correlation analysis further showed that EGF can alleviate liver oxidative injury caused by IUGR and improve the performance of IUGR piglets. In conclusion, EGF exhibited potent protective effects on IUGR-induced liver oxidative injury, by activating the Nrf2 signaling pathway to mediate the expression of downstream antioxidant enzymes and phase II detoxification enzymes (NQO1 and HO1), thereby alleviating liver oxidative damage and promoting the growth performance of IUGR piglets.
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Affiliation(s)
- Xiaopeng Tang
- State Engineering Technology Institute for Karst Desertfication Control, School of Karst Science, Guizhou Normal University, Guiyang 550001, China
| | - Kangning Xiong
- State Engineering Technology Institute for Karst Desertfication Control, School of Karst Science, Guizhou Normal University, Guiyang 550001, China
| | - Meijun Li
- College of Animal Science and Technology, Hunan Biological and Electromechanical Polytechnic, Changsha 410127, China
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Ogawa T, Ishitsuka Y. NRF2 in the Epidermal Pigmentary System. Biomolecules 2022; 13:biom13010020. [PMID: 36671405 PMCID: PMC9855619 DOI: 10.3390/biom13010020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/20/2022] [Accepted: 12/21/2022] [Indexed: 12/25/2022] Open
Abstract
Melanogenesis is a major part of the environmental responses and tissue development of the integumentary system. The balance between reduction and oxidation (redox) governs pigmentary responses, for which coordination among epidermal resident cells is indispensable. Here, we review the current understanding of melanocyte biology with a particular focus on the "master regulator" of oxidative stress responses (i.e., the Kelch-like erythroid cell-derived protein with cap'n'collar homology-associated protein 1-nuclear factor erythroid-2-related factor 2 system) and the autoimmune pigment disorder vitiligo. Our investigation revealed that the former is essential in pigmentogenesis, whereas the latter results from unbalanced redox homeostasis and/or defective intercellular communication in the interfollicular epidermis (IFE). Finally, we propose a model in which keratinocytes provide a "niche" for differentiated melanocytes and may "imprint" IFE pigmentation.
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Affiliation(s)
- Tatsuya Ogawa
- Department of Dermatology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Japan
| | - Yosuke Ishitsuka
- Department of Dermatology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita 565-0871, Japan
- Correspondence: ; Tel.: +81-66-879-3031; Fax: +81-66-879-3039
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Koyama Y, Harada S, Sato T, Kobayashi Y, Yanagawa H, Iwahashi T, Tanaka H, Ohata K, Imai T, Ohta Y, Kamakura T, Kobayashi H, Inohara H, Shimada S. Therapeutic strategy for facial paralysis based on the combined application of Si-based agent and methylcobalamin. Biochem Biophys Rep 2022; 32:101388. [DOI: 10.1016/j.bbrep.2022.101388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 11/02/2022] [Accepted: 11/14/2022] [Indexed: 11/23/2022] Open
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Ischemic Stroke and Dietary Vitamin B12 Deficiency in Old-Aged Females: Impaired Motor Function, Increased Ischemic Damage Size, and Changed Metabolite Profiles in Brain and Cecum Tissue. Nutrients 2022; 14:nu14142960. [PMID: 35889916 PMCID: PMC9318046 DOI: 10.3390/nu14142960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/13/2022] [Accepted: 07/15/2022] [Indexed: 02/04/2023] Open
Abstract
A vitamin B12 deficiency (vit. B12 def.) is common in the elderly, because of changes in metabolism. Clinical studies have reported that a vit. B12 def. results in worse outcome after stroke, and the mechanisms through which a vit. B12 def. changes the brain requires further investigation. This study investigated the role of vit. B12 def. on stroke outcome and mechanisms using aged female mice. Eighteen-month-old females were put on a control or vit. B12 def. diet for 4 weeks, after which an ischemic stroke was induced in the sensorimotor cortex. After damage, motor function was measured, the animals were euthanized, and tissues were collected for analysis. Vit. B12 def. animals had increased levels of total homocysteine in plasma and liver, and choline levels were also increased in the liver. Vit. B12 def. animals had larger damage volume in brain tissue and more apoptosis. The cecum tissue pathway analysis showed dysfunction in B12 transport. The analysis of mitochondrial metabolomics in brain tissue showed reduced levels of metabolites involved in the TCA cycle in vit. B12 def. animals. Motor function after stroke was impaired in vit. B12 def. animals. A dietary vit. B12 def. impairs motor function through increased apoptosis and changes in mitochondrial metabolism in brain tissue.
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