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Wang W, Zhao W, Song X, Wang H, Gu L. Zhongfeng decoction attenuates cerebral ischemia-reperfusion injury by inhibiting autophagy via regulating the AGE-RAGE signaling pathway. JOURNAL OF ETHNOPHARMACOLOGY 2025; 336:118718. [PMID: 39179056 DOI: 10.1016/j.jep.2024.118718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Revised: 08/09/2024] [Accepted: 08/19/2024] [Indexed: 08/26/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Tackling phlegm and improving blood circulation is vital in the treatment of ischemic stroke (IS), culminating in the development of Zhongfeng Decoction (ZFD), a method grounded in this approach and serving as an effective therapy for IS. Nonetheless, the defensive mechanism of the ZFD in preventing cerebral ischemia-reperfusion damage remains ambiguous. AIM OF THE STUDY Determine the active ingredients in ZFD that have neuroprotective effects, and identify its mechanism of action against IS. MATERIALS AND METHODS A cerebral ischemia model in rats was developed, utilizing TTC, Nissl staining, and an oxidative stress kit to evaluate the neuroprotective impact of ZFD on this rat model. Following this, an amalgamation of LC-MS and network pharmacology techniques was employed to pinpoint potential active components, primary targets, and crucial action mechanisms of ZFD in treating IS. Finally, key targets and signaling pathways were detected using qRT-PCR, ELISA, Western blotting, electron microscopy, and other methods. RESULTS Through LC-MS and network analysis, 15 active ingredients and 6 hub targets were identified from ZFD. Analysis of pathway enrichment revealed that ZFD predominantly engages in the AGE-RAGE signaling route. Kaempferol, quercetin, luteolin, baicalein, and nobiletin in ZFD are the main active ingredients for treating IS. In vivo validation showed that ZFD can improve nerve damage in cerebral ischemic rats, reduce the mRNA expression of IL6, SERPINE1, CCL2, and TGFB1 related to inflammation. Furthermore, we also confirmed that ZFD can inhibit the protein expression of AGEs, RAGE, p-IKBα/IKBα, p-NF-κB p65/NF-κB p65, reduce autophagy levels, and thus decrease neuronal apoptosis. CONCLUSIONS The mechanism of action of ZFD in treating IS primarily includes inflammation suppression, oxidative stress response alleviation, post-stroke cell autophagy and apoptosis regulation, and potential mediation of the AGE-RAGE signaling pathway. This study elucidates how ZFD functions in treating IS, establishing a theoretical basis for its clinical application.
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Affiliation(s)
- Weitao Wang
- Ruikang Hospital Affiliated to Guangxi University of Chinese Medicine, Nanning, 530011, Guangxi, China.
| | - Wanshen Zhao
- Guangxi Medical University, Nanning, 530021, Guangxi, China.
| | - Xiaoxiao Song
- Guangxi University of Chinese Medicine, Nanning, 530200, Guangxi, China
| | - Honghai Wang
- Guangxi University of Chinese Medicine, Nanning, 530200, Guangxi, China
| | - Lian Gu
- The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, 530023, Guangxi, China.
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Anwar S, Raut R, Alhumaydhi FA. A comprehensive investigation on alleviating oxidative stress and inflammation in hyperglycaemic conditions through in vitro experiments and computational analysis. Saudi J Biol Sci 2024; 31:104003. [PMID: 38766504 PMCID: PMC11097074 DOI: 10.1016/j.sjbs.2024.104003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 04/15/2024] [Accepted: 04/20/2024] [Indexed: 05/22/2024] Open
Abstract
Protein glycation, hyper-inflammatory reactions, and oxidative stress play a crucial role in the pathophysiology of numerous diseases. The current work evaluated the protective ability of ethyl alcohol extract of leaves from holy basil (Ocimum sanctum Linn) against inflammation, oxidative stress, glycation and advanced glycation endproducts formation. Various in vitro assays assessed prementioned properties of holy basil. In addition, molecular docking was conducted. The highest hydrogen peroxide reduction activity (72.7 %) and maximum percentage of DPPH scavenging (71.3 %) depicted its vigorous antioxidant abilities. Furthermore, it showed the most excellent protection against proteinase activity (67.247 %), prevention of denaturation of egg albumin (65.29 %), and BSA (bovine serum albumin) (68.87 %) with 600 µg/ml. Percent aggregation index (57.528 %), browning intensity (56.61 %), and amyloid structure (57.0 %) were all reduced significantly using 600 μg/ml of extract. Additionally, the antimicrobial potential was also confirmed. According to a molecular docking study, active leaf extract ingredients were found to bind with superoxide dismutase, catalase, and carbonic anhydrase. As a conclusion, O. sanctum has a variety of health-promoting properties that may reduce the severity of many diseases in diabetic patients. However, in order to ascertain the mechanisms of action of the components of its leaves in disease prevention, more thorough research based on pharmacological aspects is needed.
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Affiliation(s)
- Shehwaz Anwar
- Department of Medical Laboratory Technology, Mohan Institute of Nursing and Paramedical Sciences, Bareilly 243302, Uttar Pradesh, India
| | - Ravindra Raut
- Department of Biotechnology, National Institute of Technology Durgapur, Durgapur 713209, India
| | - Fahad A. Alhumaydhi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
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Thongtak A, Yutisayanuwat K, Harnkit N, Noikaew T, Chumnanpuen P. Computational Screening for the Dipeptidyl Peptidase-IV Inhibitory Peptides from Putative Hemp Seed Hydrolyzed Peptidome as a Potential Antidiabetic Agent. Int J Mol Sci 2024; 25:5730. [PMID: 38891918 PMCID: PMC11171819 DOI: 10.3390/ijms25115730] [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: 04/18/2024] [Revised: 05/19/2024] [Accepted: 05/22/2024] [Indexed: 06/21/2024] Open
Abstract
Dipeptidyl peptidase-IV (DPPIV) inhibitory peptides are a class of antihyperglycemic drugs used in the treatment of type 2 diabetes mellitus, a metabolic disorder resulting from reduced levels of the incretin hormone GLP-1. Given that DPPIV degrades incretin, a key regulator of blood sugar levels, various antidiabetic medications that inhibit DPPIV, such as vildagliptin, sitagliptin, and linagliptin, are employed. However, the potential side effects of these drugs remain a matter of debate. Therefore, we aimed to investigate food-derived peptides from Cannabis sativa (hemp) seeds. Our developed bioinformatics pipeline was used to identify the putative hydrolyzed peptidome of three highly abundant proteins: albumin, edestin, and vicilin. These proteins were subjected to in silico digestion by different proteases (trypsin, chymotrypsin, and pepsin) and then screened for DPPIV inhibitory peptides using IDPPIV-SCM. To assess potential adverse effects, several prediction tools, namely, TOXINpred, AllerCatPro, and HemoPred, were employed to evaluate toxicity, allergenicity, and hemolytic effects, respectively. COPID was used to determine the amino acid composition. Molecular docking was performed using GalaxyPepDock and HPEPDOCK, 3D visualizations were conducted using the UCSF Chimera program, and MD simulations were carried out with AMBER20 MD software. Based on the predictive outcomes, FNVDTE from edestin and EAQPST from vicilin emerged as promising candidates for DPPIV inhibitors. We anticipate that our findings may pave the way for the development of alternative DPPIV inhibitors.
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Affiliation(s)
- Arisa Thongtak
- Mahidol Wittayanusorn School, 364 Salaya, Phuttamonthon District, Nakhon Pathom 73170, Thailand; (A.T.); (K.Y.)
| | - Kulpariya Yutisayanuwat
- Mahidol Wittayanusorn School, 364 Salaya, Phuttamonthon District, Nakhon Pathom 73170, Thailand; (A.T.); (K.Y.)
| | - Nathaphat Harnkit
- Medicinal Plant Research Institute, Department of Medical Sciences, Ministry of Public Health, Nonthaburi 11000, Thailand;
| | - Tipanart Noikaew
- Department of Biology and Health Science, Mahidol Wittayanusorn School, 364 Salaya, Phuttamonthon District, Nakhon Pathom 73170, Thailand;
| | - Pramote Chumnanpuen
- Department of Zoology, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
- Omics Center for Agriculture, Bioresources, Food and Health, Kasetsart University (OmiKU), Bangkok 10900, Thailand
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Paparo L, Coppola S, Nocerino R, Pisapia L, Picariello G, Cortese M, Voto L, Maglio M, Miele E, Carucci L, Oglio F, Trinchese G, Mollica MP, Bruno C, De Vita S, Tarallo A, Damiano C, Cerulo M, Esposito C, Fogliano V, Parenti G, Troncone R, Berni Canani R. How dietary advanced glycation end products could facilitate the occurrence of food allergy. J Allergy Clin Immunol 2024; 153:742-758. [PMID: 38042501 DOI: 10.1016/j.jaci.2023.11.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/04/2023] [Accepted: 11/02/2023] [Indexed: 12/04/2023]
Abstract
BACKGROUND Food allergy (FA) is one of the most common chronic conditions in children with an increasing prevalence facilitated by the exposure to environmental factors in predisposed individuals. It has been hypothesized that the increased consumption of ultra-processed foods, containing high levels of dietary advanced glycation end products (AGEs), could facilitate the occurrence of FA. OBJECTIVE We sought to provide preclinical and clinical evidence on the potential role of AGEs in facilitating the occurrence of FA. METHODS Human enterocytes, human small intestine organ culture, and PBMCs from children at risk for allergy were used to investigate the direct effect of AGEs on gut barrier, inflammation, TH2 cytokine response, and mitochondrial function. Intake of the 3 most common glycation products in Western diet foods, Nε-(carboxymethyl) lysine, Nε-(1-carboxyethyl) lysin, and Nδ-(5-hydro-5- methyl-4-imidazolone-2-yl)-ornithine (MG-H1), and the accumulation of AGEs in the skin were comparatively investigated in children with FA and in age-matched healthy controls. RESULTS Human enterocytes exposed to AGEs showed alteration in gut barrier, AGE receptor expression, reactive oxygen species production, and autophagy, with increased transepithelial passage of food antigens. Small intestine organ cultures exposed to AGEs showed an increase of CD25+ cells and proliferating crypt enterocytes. PBMCs exposed to AGEs showed alteration in proliferation rate, AGE receptor activation, release of inflammatory and TH2 cytokines, and mitochondrial metabolism. Significant higher dietary AGE intake and skin accumulation were observed children with FA (n = 42) compared with age-matched healthy controls (n = 66). CONCLUSIONS These data, supporting a potential role for dietary AGEs in facilitating the occurrence of FA, suggest the importance of limiting exposure to AGEs children as a potential preventive strategy against this common condition.
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Affiliation(s)
- Lorella Paparo
- Department of Translational Medical Science, University Federico II, Naples, Italy; ImmunoNutritionLab at CEINGE Advanced Biotechnologies, University Federico II, Naples, Italy
| | - Serena Coppola
- Department of Translational Medical Science, University Federico II, Naples, Italy; ImmunoNutritionLab at CEINGE Advanced Biotechnologies, University Federico II, Naples, Italy
| | - Rita Nocerino
- Department of Translational Medical Science, University Federico II, Naples, Italy; ImmunoNutritionLab at CEINGE Advanced Biotechnologies, University Federico II, Naples, Italy
| | - Laura Pisapia
- Institute of Genetics and Biophysics, National Research Council, Naples, Italy
| | | | - Maddalena Cortese
- Department of Translational Medical Science, University Federico II, Naples, Italy; ImmunoNutritionLab at CEINGE Advanced Biotechnologies, University Federico II, Naples, Italy
| | - Luana Voto
- Department of Translational Medical Science, University Federico II, Naples, Italy; ImmunoNutritionLab at CEINGE Advanced Biotechnologies, University Federico II, Naples, Italy
| | - Mariantonia Maglio
- Department of Translational Medical Science, University Federico II, Naples, Italy; European Laboratory for the Investigation of Food-Induced Diseases, University Federico II, Naples, Italy
| | - Erasmo Miele
- Department of Translational Medical Science, University Federico II, Naples, Italy
| | - Laura Carucci
- Department of Translational Medical Science, University Federico II, Naples, Italy; ImmunoNutritionLab at CEINGE Advanced Biotechnologies, University Federico II, Naples, Italy
| | - Franca Oglio
- Department of Translational Medical Science, University Federico II, Naples, Italy; ImmunoNutritionLab at CEINGE Advanced Biotechnologies, University Federico II, Naples, Italy
| | | | | | - Cristina Bruno
- Department of Translational Medical Science, University Federico II, Naples, Italy; ImmunoNutritionLab at CEINGE Advanced Biotechnologies, University Federico II, Naples, Italy
| | - Simone De Vita
- Department of Translational Medical Science, University Federico II, Naples, Italy; ImmunoNutritionLab at CEINGE Advanced Biotechnologies, University Federico II, Naples, Italy
| | - Antonietta Tarallo
- Department of Translational Medical Science, University Federico II, Naples, Italy; Telethon Institute of Genetics and Medicine, Pozzuoli, Italy
| | - Carla Damiano
- Department of Translational Medical Science, University Federico II, Naples, Italy; Telethon Institute of Genetics and Medicine, Pozzuoli, Italy
| | - Mariapina Cerulo
- Department of Translational Medical Science, University Federico II, Naples, Italy
| | - Ciro Esposito
- Department of Translational Medical Science, University Federico II, Naples, Italy
| | - Vincenzo Fogliano
- Food Quality and Design Group, Wageningen University and Research, Wageningen, The Netherlands
| | - Giancarlo Parenti
- Department of Translational Medical Science, University Federico II, Naples, Italy; Telethon Institute of Genetics and Medicine, Pozzuoli, Italy
| | - Riccardo Troncone
- Department of Translational Medical Science, University Federico II, Naples, Italy; European Laboratory for the Investigation of Food-Induced Diseases, University Federico II, Naples, Italy
| | - Roberto Berni Canani
- Department of Translational Medical Science, University Federico II, Naples, Italy; ImmunoNutritionLab at CEINGE Advanced Biotechnologies, University Federico II, Naples, Italy; European Laboratory for the Investigation of Food-Induced Diseases, University Federico II, Naples, Italy; Task Force for Microbiome Studies, University Federico II, Naples, Italy; Task Force for Nutraceuticals and Functional Foods, University Federico II, Naples, Italy.
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Guo S, Li C, Lian L, Le Z, Ren Y, Liao YX, Shen J, Hou JT. Fluorescence Imaging of Diabetic Cataract-Associated Lipid Droplets in Living Cells and Patient-Derived Tissues. ACS Sens 2023; 8:3882-3891. [PMID: 37737091 DOI: 10.1021/acssensors.3c01439] [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] [Indexed: 09/23/2023]
Abstract
Diabetic cataract (DC) surgery carries risks such as slow wound healing, macular edema, and progression of retinopathy and is faced with a deficiency of effective drugs. In this context, we proposed a protocol to evaluate the drug's efficacy using lipid droplets (LDs) as the marker. For this purpose, a fluorescent probe PTZ-LD for LDs detection is developed based on the phenothiazine unit. The probe displays polarity-dependent emission variations, i.e., lower polarity leading to stronger intensity. Especially, the probe exhibits photostability superior to that of Nile Red, a commercial LDs staining dye. Using the probe, the formation of LDs in DC-modeled human lens epithelial (HLE) cells is validated, and the interplay of LDs-LDs and LDs-others are investigated. Unexpectedly, lipid transfer between LDs is visualized. Moreover, the therapeutic efficacy of various drugs in DC-modeled HLE cells is assessed. Ultimately, more LDs were found in lens epithelial tissues from DC patients than in cataract tissues for the first time. We anticipate that this work can attract more attention to the important roles of LDs during DC progression.
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Affiliation(s)
- Shuai Guo
- School of Chemistry and Chemical Engineering, Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Guangxi Minzu University, Nanning 530008, China
- National Engineering Research Center of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou 325027, China
| | - Chen Li
- National Engineering Research Center of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou 325027, China
- Eye Hospital of Wenzhou Medical University, Wenzhou 325003, China
| | - Lili Lian
- National Engineering Research Center of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou 325027, China
- Eye Hospital of Wenzhou Medical University, Wenzhou 325003, China
| | - Zhenmin Le
- National Engineering Research Center of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou 325027, China
- Eye Hospital of Wenzhou Medical University, Wenzhou 325003, China
| | - Yueping Ren
- National Engineering Research Center of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou 325027, China
- Eye Hospital of Wenzhou Medical University, Wenzhou 325003, China
| | - Ye-Xin Liao
- School of Chemistry and Chemical Engineering, Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Guangxi Minzu University, Nanning 530008, China
- Guangxi Higher Education Institutes Key Laboratory for New Chemical and Biological Transformation Process Technology, Nanning 530008, China
| | - Jianliang Shen
- National Engineering Research Center of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Engineering Research Center for Tissue Repair Materials, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325001, China
| | - Ji-Ting Hou
- National Engineering Research Center of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou 325027, China
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Zhong Q, Zheng K, Li W, An K, Liu Y, Xiao X, Hai S, Dong B, Li S, An Z, Dai L. Post-translational regulation of muscle growth, muscle aging and sarcopenia. J Cachexia Sarcopenia Muscle 2023. [PMID: 37127279 DOI: 10.1002/jcsm.13241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 03/07/2023] [Accepted: 04/02/2023] [Indexed: 05/03/2023] Open
Abstract
Skeletal muscle makes up 30-40% of the total body mass. It is of great significance in maintaining digestion, inhaling and exhaling, sustaining body posture, exercising, protecting joints and many other aspects. Moreover, muscle is also an important metabolic organ that helps to maintain the balance of sugar and fat. Defective skeletal muscle function not only limits the daily activities of the elderly but also increases the risk of disability, hospitalization and death, placing a huge burden on society and the healthcare system. Sarcopenia is a progressive decline in muscle mass, muscle strength and muscle function with age caused by environmental and genetic factors, such as the abnormal regulation of protein post-translational modifications (PTMs). To date, many studies have shown that numerous PTMs, such as phosphorylation, acetylation, ubiquitination, SUMOylation, glycosylation, glycation, methylation, S-nitrosylation, carbonylation and S-glutathionylation, are involved in the regulation of muscle health and diseases. This article systematically summarizes the post-translational regulation of muscle growth and muscle atrophy and helps to understand the pathophysiology of muscle aging and develop effective strategies for diagnosing, preventing and treating sarcopenia.
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Affiliation(s)
- Qian Zhong
- Department of Endocrinology and Metabolism, General Practice Ward/International Medical Center Ward, General Practice Medical Center and National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Kun Zheng
- Department of Endocrinology and Metabolism, General Practice Ward/International Medical Center Ward, General Practice Medical Center and National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Wanmeng Li
- Department of Endocrinology and Metabolism, General Practice Ward/International Medical Center Ward, General Practice Medical Center and National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Kang An
- Department of Endocrinology and Metabolism, General Practice Ward/International Medical Center Ward, General Practice Medical Center and National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Yu Liu
- Department of Endocrinology and Metabolism, General Practice Ward/International Medical Center Ward, General Practice Medical Center and National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Xina Xiao
- Department of Endocrinology and Metabolism, General Practice Ward/International Medical Center Ward, General Practice Medical Center and National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Shan Hai
- Department of Endocrinology and Metabolism, General Practice Ward/International Medical Center Ward, General Practice Medical Center and National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Biao Dong
- Department of Endocrinology and Metabolism, General Practice Ward/International Medical Center Ward, General Practice Medical Center and National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Shuangqing Li
- Department of Endocrinology and Metabolism, General Practice Ward/International Medical Center Ward, General Practice Medical Center and National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Zhenmei An
- Department of Endocrinology and Metabolism, General Practice Ward/International Medical Center Ward, General Practice Medical Center and National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Lunzhi Dai
- Department of Endocrinology and Metabolism, General Practice Ward/International Medical Center Ward, General Practice Medical Center and National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
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Wal P, Rathore S, Aziz N, Singh YK, Gupta A. Aortic stenosis: a review on acquired pathogenesis and ominous combination with diabetes mellitus. Egypt Heart J 2023; 75:26. [PMID: 37027109 PMCID: PMC10082141 DOI: 10.1186/s43044-023-00345-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 03/08/2023] [Indexed: 04/08/2023] Open
Abstract
BACKGROUND Aortic stenosis (AS) is a progressive disease, with no pharmacological treatment. The prevalence of diabetes mellitus (DM) among AS patients is higher than in the general population. DM significantly increases the risk of AS development and progression from mild to severe. The interplay between AS and DM's mechanism is not entirely known yet. MAIN BODY The increased accumulation of advanced glycation end products (AGEs) was linked to increased valvular oxidative stress, inflammation, expression of coagulation factors, and signs of calcification, according to an analysis of aortic stenotic valves. It is interesting to note that in diabetic AS patients, valvular inflammation did not correlate with serum glucose levels but rather only with long-term glycemic management markers like glycated haemoglobin and fructosamine. Transcatheter aortic valve replacement, which has been shown to be safer than surgical aortic valve replacement, is advantageous for AS patients who also have concurrent diabetes. Additionally, novel anti-diabetic medications have been proposed to lower the risk of AS development in DM patients, including sodium-glucose cotransporter-2 inhibitors and glucagon-like peptide-1 receptor agonist that target reduction of AGEs-mediated oxidative stress. CONCLUSIONS There are little data on the effects of hyperglycemia on valvular calcification, but understanding the interactions between them is essential to develop a successful treatment strategy to stop or at least slow the progression of AS in DM patients. There is a link among AS and DM and that DM negatively impacts the quality of life and longevity of AS patients. The sole successful treatment, despite ongoing efforts to find new therapeutic modalities, involves aortic valve replacement. More research is required to find methods that can slow the advancement of these conditions, enhancing the prognosis and course of people with AS and DM.
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Affiliation(s)
- Pranay Wal
- Pranveer Singh Institute of Technology (Pharmacy), Bhauti, Kanpur, UP, 209305, India.
| | - Shruti Rathore
- LCIT School of Pharmacy, Bilaspur, Chhattisgarh, 495220, India
| | - Namra Aziz
- Pranveer Singh Institute of Technology (Pharmacy), Bhauti, Kanpur, UP, 209305, India
| | - Yash Kumar Singh
- Pranveer Singh Institute of Technology (Pharmacy), Bhauti, Kanpur, UP, 209305, India
| | - Arpit Gupta
- Pranveer Singh Institute of Technology (Pharmacy), Bhauti, Kanpur, UP, 209305, India
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Yang K, Cao F, Wang W, Tian Z, Yang L. The relationship between HMGB1 and autophagy in the pathogenesis of diabetes and its complications. Front Endocrinol (Lausanne) 2023; 14:1141516. [PMID: 37065747 PMCID: PMC10090453 DOI: 10.3389/fendo.2023.1141516] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 03/13/2023] [Indexed: 03/30/2023] Open
Abstract
Diabetes mellitus is a chronic metabolic disorder characterized by elevated blood glucose levels and has become the third leading threat to human health after cancer and cardiovascular disease. Recent studies have shown that autophagy is closely associated with diabetes. Under normal physiological conditions, autophagy promotes cellular homeostasis, reduces damage to healthy tissues and has bidirectional effects on regulating diabetes. However, under pathological conditions, unregulated autophagy activation leads to cell death and may contribute to the progression of diabetes. Therefore, restoring normal autophagy may be a key strategy to treat diabetes. High-mobility group box 1 protein (HMGB1) is a chromatin protein that is mainly present in the nucleus and can be actively secreted or passively released from necrotic, apoptotic, and inflammatory cells. HMGB1 can induce autophagy by activating various pathways. Studies have shown that HMGB1 plays an important role in insulin resistance and diabetes. In this review, we will introduce the biological and structural characteristics of HMGB1 and summarize the existing knowledge on the relationship between HMGB1, autophagy, diabetes, and diabetic complications. We will also summarize potential therapeutic strategies that may be useful for the prevention and treatment of diabetes and its complications.
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Affiliation(s)
- Kun Yang
- College of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Feng Cao
- College of Acupuncture and Massage, Beijing University of Chinese Medicine, Beijing, China
- Department of Acupuncture, Haidian District Shuangyushu Community Health Service Center, Beijing, China
| | - Weili Wang
- Institute of Basic Research in Clinical Traditional Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, China
| | - Zhenyu Tian
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Department of Cardiology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
- *Correspondence: Lu Yang, ; Zhenyu Tian,
| | - Lu Yang
- College of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- *Correspondence: Lu Yang, ; Zhenyu Tian,
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9
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Puvula J, Maddu N, Gutam N, Parimal A, Raghavendra PB. The role of pyrethroid derivatives in autophagy and apoptosis crosstalk signaling and potential risk for malignancies. Oncotarget 2022; 13:1323-1340. [PMID: 36528879 PMCID: PMC9760267 DOI: 10.18632/oncotarget.28328] [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] [Indexed: 12/23/2022] Open
Abstract
Pyrethroids and its derivatives widespread and uncontrolled continuous use has influenced multiple deleterious effects resulting in as a potential risk factor causing damage to the organ systems. Allethrin and prallethrin are extensively used yet their influences on human primary cells are very limited or under reported. The potential mechanisms by which allethrin and prallethrin modulates human primary cells, especially the molecular mechanisms or interconnectivity of autophagy-apoptosis, their clinical relevance in human subjects or patients are not well defined. In this current study, we've furnished the evidence that both allethrin and prallethrin user samples significantly induced Ccl2 mRNA expression, increased amount of reactive oxygen intermediate, inhibited membrane bound enzymes and altered membrane fluidity. Pyrethroid derivative users had induced levels of lipid peroxidation and induced binding activities of transcription factors(tfs) like CEBP-β and NF-AT. Pyrethroid derivatives induced autophagy, elicited intracellular Ca2+ concentration, calcineurin and regulated proapoptotic genes, DAPK1, Bim. Our current study presumably comprises the initial investigation of a very new mechanism of pyrethroid derivatives-moderated programed cell death in various cell sets or types, like human primary cells where-in this is a late event, is documented. Hence, current research-study might be significant in the various pyrethroid derivatives-allied hematological-related cancers and immunosuppressant or auto-immune disorders. In the foremost instance, we present data stating that pyrethroid derivatives induces multiple cell signaling cascades, like CEBP-β, NF-AT, ERK and MAPK having a role in autophagy thereby; synchronously effectively impact on the apoptosis, therefore causing hematological tumors and toxic or immune related disorders.
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Affiliation(s)
- Jyothi Puvula
- 1Department of Biochemistry, Sri Krishnadevaraya University, Anantapuramu 515003, Andhra Pradesh, India,*These authors contributed equally to this work
| | - Narendra Maddu
- 1Department of Biochemistry, Sri Krishnadevaraya University, Anantapuramu 515003, Andhra Pradesh, India,*These authors contributed equally to this work
| | - Nagajothi Gutam
- 2Department Corporate Secretaryship-Biostatistics, Queen Mary’s College, Chennai 600004, Tamil Nadu, India
| | - Asha Parimal
- 3School of Regenerative Medicine (SORM) - Manipal Academy of Higher Education, Deemed to be Manipal University, Bangalore 560065, Karnataka, India
| | - Pongali B. Raghavendra
- 3School of Regenerative Medicine (SORM) - Manipal Academy of Higher Education, Deemed to be Manipal University, Bangalore 560065, Karnataka, India,4National Institute of Biomedical Genomics, Kalyani 741251, West Bengal, India,Correspondence to:Pongali B. Raghavendra, email:
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10
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Mouanness M, Nava H, Dagher C, Merhi Z. Contribution of Advanced Glycation End Products to PCOS Key Elements: A Narrative Review. Nutrients 2022; 14:nu14173578. [PMID: 36079834 PMCID: PMC9460172 DOI: 10.3390/nu14173578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/23/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022] Open
Abstract
In the last decade, data has suggested that dietary advanced glycation end products (AGEs) play an important role in both reproductive and metabolic dysfunctions associated with polycystic ovary syndrome (PCOS). AGEs are highly reactive molecules that are formed by the non-enzymatic glycation process between reducing sugars and proteins, lipids, or nucleic acids. They can be formed endogenously under normal metabolic conditions or under abnormal situations such as diabetes, renal disease, and other inflammatory disorders. Bodily AGEs can also accumulate from exogenous dietary sources particularly when ingested food is cooked and processed under high-temperature conditions, such as frying, baking, or grilling. Women with PCOS have elevated levels of serum AGEs that are associated with insulin resistance and obesity and that leads to a high deposition of AGEs in the ovarian tissue causing anovulation and hyperandrogenism. This review will describe new data relevant to the role of AGEs in several key elements of PCOS phenotype and pathophysiology. Those elements include ovarian dysfunction, hyperandrogenemia, insulin resistance, and obesity. The literature findings to date suggest that targeting AGEs and their cellular actions could represent a novel approach to treating PCOS symptoms.
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Affiliation(s)
| | - Henry Nava
- Rejuvenating Fertility Center, New York, NY 10019, USA
| | - Christelle Dagher
- Department of Obstetrics and Gynecology, American University of Beirut Medical Center, Beirut P.O. Box 100, Lebanon
| | - Zaher Merhi
- Rejuvenating Fertility Center, New York, NY 10019, USA
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, SUNY Downstate Health Sciences University, Brooklyn, NY 11203, USA
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Maimonides Medical Center, Brooklyn, NY 11219, USA
- Correspondence: ; Tel.: +1-(203)-557-9696
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11
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Zhang Z, Yuan Y, Hu L, Tang J, Meng Z, Dai L, Gao Y, Ma S, Wang X, Yuan Y, Zhang Q, Cai W, Ruan X, Guo X. ANGPTL8 accelerates liver fibrosis mediated by HFD-induced inflammatory activity via LILRB2/ERK signaling pathways. J Adv Res 2022; 47:41-56. [PMID: 36031141 PMCID: PMC10173191 DOI: 10.1016/j.jare.2022.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 07/24/2022] [Accepted: 08/08/2022] [Indexed: 10/15/2022] Open
Abstract
INTRODUCTION High calorie intake is known to induce nonalcoholic fatty liver disease (NAFLD) by promoting chronic inflammation. However, the mechanisms are poorly understood. OBJECTIVES This study examined the roles of ANGPTL8 in the regulation of NAFLD-associated liver fibrosis progression induced by high fat diet (HFD)-mediated inflammation. METHODS The ANGPTL8 concentration was measured in serum samples from liver cancer and liver cirrhosis patients. ANGPTL8 knockout mice were used to induce disease models (HFD, HFHC and CCL4) followed by pathological staining, western blot and immunohistochemistry. Hydrodynamic injection of an adeno-associated virus 8 (AAV8) was used to establish a model for restoring ANGPTL8 expression specifically in ANGPTL8 KO mice livers. RNA-sequencing, protein array, Co-IP, etc. were used to study ANGPTL8's mechanisms in regulating liver fibrosis progression, and drug screening was used to identify an effective inhibitor of ANGPTL8 expression. RESULTS ANGPTL8 level is associated with liver fibrogenesis in both cirrhosis and hepatocellular carcinoma patients. Mouse studies demonstrated that ANGPTL8 deficiency suppresses HFD-stimulated inflammatory activity, hepatic steatosis and liver fibrosis. The AAV-mediated restoration of liver ANGPTL8 expression indicated that liver-derived ANGPTL8 accelerates HFD-induced liver fibrosis. Liver-derived ANGPTL8, as a proinflammatory factor, activates HSCs (hepatic stellate cells) by interacting with the LILRB2 receptor to induce ERK signaling and increase the expression of genes that promote liver fibrosis. The FDA-approved drug metformin, an ANGPTL8 inhibitor, inhibited HFD-induced liver fibrosis in vivo. CONCLUSIONS Our data support that ANGPTL8 is a proinflammatory factor that accelerates NAFLD-associated liver fibrosis induced by HFD. The serum ANGPTL8 level may be a potential and specific diagnostic marker for liver fibrosis, and targeting ANGPTL8 holds great promise for developing innovative therapies to treat NAFLD-associated liver fibrosis.
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Affiliation(s)
- Zongli Zhang
- Institute of Pediatric Disease, Hubei Key Laboratory of Embryonic Stem Cell Research, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, China; Guangdong Engineering & Technology Research Center for Disease-Model Animals, Laboratory Animal Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, Guangdong, China
| | - Yue Yuan
- Institute of Pediatric Disease, Hubei Key Laboratory of Embryonic Stem Cell Research, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, China; College of Pharmacy, Hubei University of Medicine, Shiyan, Hubei 442000, China
| | - Lin Hu
- Institute of Pediatric Disease, Hubei Key Laboratory of Embryonic Stem Cell Research, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, China; Guangdong Engineering & Technology Research Center for Disease-Model Animals, Laboratory Animal Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, Guangdong, China
| | - Jian Tang
- Institute of Pediatric Disease, Hubei Key Laboratory of Embryonic Stem Cell Research, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, China; Guangdong Engineering & Technology Research Center for Disease-Model Animals, Laboratory Animal Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, Guangdong, China
| | - Zhongji Meng
- Hubei Clinical Research Center for Precise Diagnosis and Treatment of Liver Cancer, Shiyan, Hubei 442000, China
| | - Longjun Dai
- Department of Neurosurgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, China
| | - Yujiu Gao
- Institute of Pediatric Disease, Hubei Key Laboratory of Embryonic Stem Cell Research, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, China; Guangdong Engineering & Technology Research Center for Disease-Model Animals, Laboratory Animal Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, Guangdong, China
| | - Shinan Ma
- Institute of Pediatric Disease, Hubei Key Laboratory of Embryonic Stem Cell Research, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, China
| | - Xiaoli Wang
- Institute of Pediatric Disease, Hubei Key Laboratory of Embryonic Stem Cell Research, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, China
| | - Yahong Yuan
- Institute of Pediatric Disease, Hubei Key Laboratory of Embryonic Stem Cell Research, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, China
| | - Qiufang Zhang
- Institute of Pediatric Disease, Hubei Key Laboratory of Embryonic Stem Cell Research, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, China
| | - Weibin Cai
- Guangdong Engineering & Technology Research Center for Disease-Model Animals, Laboratory Animal Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, Guangdong, China; Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, Guangdong, China.
| | - Xuzhi Ruan
- Institute of Pediatric Disease, Hubei Key Laboratory of Embryonic Stem Cell Research, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, China; Guangdong Engineering & Technology Research Center for Disease-Model Animals, Laboratory Animal Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, Guangdong, China.
| | - Xingrong Guo
- Institute of Pediatric Disease, Hubei Key Laboratory of Embryonic Stem Cell Research, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, China; Department of Neurosurgery, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, Hubei, China.
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12
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Jin QH, Hu XJ, Zhao HY. Curcumin activates autophagy and attenuates high glucose‑induced apoptosis in HUVECs through the ROS/NF‑κB signaling pathway. Exp Ther Med 2022; 24:596. [PMID: 35949325 PMCID: PMC9353459 DOI: 10.3892/etm.2022.11533] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 07/04/2022] [Indexed: 11/05/2022] Open
Affiliation(s)
- Qi-Hui Jin
- Department of Geriatric Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
| | - Xu-Jun Hu
- College of Medical Technology, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, P.R. China
| | - Hai-Yan Zhao
- Department of Internal Medicina, Shangcheng District Hospital of Traditional Chinese Medicine, Hangzhou, Zhejiang 310000, P.R. China
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13
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Zhou Q, Xu H, Zhao Y, Liu B, Cheng KW, Chen F, Wang M. 6-C-(E-Phenylethenyl)-naringenin, a Styryl Flavonoid, Inhibits Advanced Glycation End Product-Induced Inflammation by Upregulation of Nrf2. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:3842-3851. [PMID: 35297642 DOI: 10.1021/acs.jafc.2c00163] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Styryl flavonoids can be formed during the thermal processing of meats and flavonoid-enriched foods, showing high potentials in the prevention of different diseases. In this study, the protective effects of several styryl flavonoids against advanced glycation end product (AGE)-induced inflammation were evaluated, with 6-C-(E-phenylethenyl)-naringenin (6-PN) showing the strongest activity among them. The results indicated that 6-PN significantly ameliorated AGE-induced damages in human umbilical vein endothelial cells, including inhibition of pro-inflammatory cytokines and reactive oxygen species (ROS) production through downregulating the protein levels of the receptor for AGEs (RAGE) and NADPH oxidase. Notably, 6-PN possessed a much higher bioavailability than its parental compound, naringenin. Furthermore, 6-PN also promoted the activation of the nuclear factor erythroid 2-related factor 2 (Nrf2) signaling pathway that was suppressed by AGEs, and the anti-inflammatory effects of 6-PN disappeared when the cells were treated with ML385, a Nrf2 inhibitor. Hence, 6-PN might inhibit AGE-induced inflammation by the RAGE/ROS/Nrf2 signaling pathway.
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Affiliation(s)
- Qian Zhou
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, P. R. China
- Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, P. R. China
| | - Hui Xu
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, P. R. China
- Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, P. R. China
| | - Yueliang Zhao
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, P. R. China
| | - Bin Liu
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, P. R. China
- Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, P. R. China
| | - Ka-Wing Cheng
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, P. R. China
- Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, P. R. China
| | - Feng Chen
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, P. R. China
- Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, P. R. China
| | - Mingfu Wang
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, P. R. China
- Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, P. R. China
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14
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Mouanness M, Merhi Z. Impact of Dietary Advanced Glycation End Products on Female Reproduction: Review of Potential Mechanistic Pathways. Nutrients 2022; 14:nu14050966. [PMID: 35267940 PMCID: PMC8912317 DOI: 10.3390/nu14050966] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/20/2022] [Accepted: 02/22/2022] [Indexed: 02/04/2023] Open
Abstract
Advanced glycation end products (AGEs), a heterogenous group of products formed by the reaction between protein and reducing sugars, can form endogenously due to non-enzymatic reactions or by exogenous sources such as diet where considerable increase in AGEs is observed due to the modification of food mainly by thermal processing. Recent studies have suggested that AGEs could impact, via inducing inflammation and oxidative stress, the reproductive health and fertility in both males and females. This review presents a summary of recently published data pertaining to the pathogenesis of dietary AGEs and their receptors as well as their potential impact on female reproductive health. More specifically, it will present data pertaining to dietary AGEs’ involvement in the mechanistic pathogenesis of polycystic ovary syndrome, ovarian dysfunction, as well as the AGEs’ effect perinatally on the female offspring reproduction. Understanding the mechanistic impact of dietary AGEs on female reproduction can help contribute to the development of targeted pharmacological therapies that will help curb rising female infertility.
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Affiliation(s)
- Marco Mouanness
- Rejuvenating Fertility Center, 315 W 57th Street, Suite 208, New York, NY 10019, USA;
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Maimonides Medical Center, Brooklyn, NY 11219, USA
| | - Zaher Merhi
- Rejuvenating Fertility Center, 315 W 57th Street, Suite 208, New York, NY 10019, USA;
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Maimonides Medical Center, Brooklyn, NY 11219, USA
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, SUNY Downstate Health Sciences University, Brooklyn, NY 11203, USA
- Correspondence:
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15
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Impact of Advanced Glycation End products (AGEs) and its receptor (RAGE) on cancer metabolic signaling pathways and its progression. Glycoconj J 2022; 38:717-734. [DOI: 10.1007/s10719-021-10031-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/26/2021] [Accepted: 11/30/2021] [Indexed: 02/07/2023]
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16
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Liang Y, Ding S, Wang X, Hu C, Zhang Y, Hu Y, Zhang Y, Kong H, Xia W, Jing Q, Hu Y, Zhao C, Wu L. Adipose/Connective Tissue From Thyroid-Associated Ophthalmopathy Uncovers Interdependence Between Methylation and Disease Pathogenesis: A Genome-Wide Methylation Analysis. Front Cell Dev Biol 2021; 9:716871. [PMID: 34568330 PMCID: PMC8457400 DOI: 10.3389/fcell.2021.716871] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 08/19/2021] [Indexed: 11/19/2022] Open
Abstract
In response to pathological stimulation, methylation status conversion of the genome drives changes of cell feature and is able to promote disease development. Yet the role of methylation in the development of thyroid-associated ophthalmopathy (TAO) remains to be evaluated. Overexpansion of orbital tissue is the key feature of TAO. In this study, the methylation profile of orbital adipose/connective tissue from TAO patients and normal individuals were compared. After screening 3,739 differentially methylated probes, the distribution and properties of these probes were analyzed. Furthermore, enriched biological functions of these genes associated with differential methylation and the relationship between their methylation status and expression profile were also identified, including PTPRU and VCAM-1. According to our results, methylation was involved in disregulated immune response and inflammation in TAO and might contribute to activation of fibroblast and adipogenesis, leading to the expansion of orbital tissue. Neuropathy and neurobehavioral symptoms were also potentially associated with methylation. These results may help to extend the understanding of methylation in TAO and provide more insights into diagnosis and treatment of patients.
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Affiliation(s)
- Yu Liang
- Eye Institute and Department of Ophthalmology, Eye and ENT Hospital, Fudan University, Shanghai, China.,NHC Key Laboratory of Myopia (Fudan University), Shanghai, China.,Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China.,Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China
| | - Sijia Ding
- Department of Phase 1 Clinical Trial Unit, The First Affiliated Hospital with Nanjing Medical University, Nanjing, China
| | - Xiying Wang
- Eye Institute and Department of Ophthalmology, Eye and ENT Hospital, Fudan University, Shanghai, China.,NHC Key Laboratory of Myopia (Fudan University), Shanghai, China.,Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China.,Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China
| | - Chunchun Hu
- Eye Institute and Department of Ophthalmology, Eye and ENT Hospital, Fudan University, Shanghai, China.,NHC Key Laboratory of Myopia (Fudan University), Shanghai, China.,Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China.,Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China
| | - Yihan Zhang
- Eye Institute and Department of Ophthalmology, Eye and ENT Hospital, Fudan University, Shanghai, China.,NHC Key Laboratory of Myopia (Fudan University), Shanghai, China.,Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China.,Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China
| | - Yan Hu
- Eye Institute and Department of Ophthalmology, Eye and ENT Hospital, Fudan University, Shanghai, China.,NHC Key Laboratory of Myopia (Fudan University), Shanghai, China.,Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China.,Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China
| | - Yuye Zhang
- Eye Institute and Department of Ophthalmology, Eye and ENT Hospital, Fudan University, Shanghai, China.,NHC Key Laboratory of Myopia (Fudan University), Shanghai, China.,Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China.,Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China
| | - Hongyu Kong
- Eye Institute and Department of Ophthalmology, Eye and ENT Hospital, Fudan University, Shanghai, China.,NHC Key Laboratory of Myopia (Fudan University), Shanghai, China.,Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China.,Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China
| | - Weiyi Xia
- Eye Institute and Department of Ophthalmology, Eye and ENT Hospital, Fudan University, Shanghai, China.,NHC Key Laboratory of Myopia (Fudan University), Shanghai, China.,Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China.,Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China
| | - Qinghe Jing
- Eye Institute and Department of Ophthalmology, Eye and ENT Hospital, Fudan University, Shanghai, China.,NHC Key Laboratory of Myopia (Fudan University), Shanghai, China.,Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China.,Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China
| | - Yuxiang Hu
- Eye Institute and Department of Ophthalmology, Eye and ENT Hospital, Fudan University, Shanghai, China.,NHC Key Laboratory of Myopia (Fudan University), Shanghai, China.,Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China.,Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China
| | - Chen Zhao
- Eye Institute and Department of Ophthalmology, Eye and ENT Hospital, Fudan University, Shanghai, China.,NHC Key Laboratory of Myopia (Fudan University), Shanghai, China.,Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China.,Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China
| | - Lianqun Wu
- Eye Institute and Department of Ophthalmology, Eye and ENT Hospital, Fudan University, Shanghai, China.,NHC Key Laboratory of Myopia (Fudan University), Shanghai, China.,Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China.,Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China
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17
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Natorska J, Kopytek M, Undas A. Aortic valvular stenosis: Novel therapeutic strategies. Eur J Clin Invest 2021; 51:e13527. [PMID: 33621361 DOI: 10.1111/eci.13527] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/19/2021] [Accepted: 02/22/2021] [Indexed: 12/29/2022]
Abstract
BACKGROUND Aortic stenosis (AS) prevalence is estimated to reach 4.5 million cases worldwide by the year 2030. AS is a progressive disease without a pharmacological treatment. In the current review, we aimed to investigate novel therapeutic approaches for non-surgical AS treatment, at least in patients with mild-to-moderate AS. MATERIALS AND METHODS The most recent and relevant papers concerned with novel molecular pathways that have potential as therapeutic targets in AS were selected from searches of PubMed and Web of Science up to February 2021. RESULTS Growing evidence indicates that therapies using proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitors, simvastatin/ezetimibe combination, cholesteryl ester transfer protein inhibitors or antisense oligonucleotides targeting apolipoprotein(a) reduce the risk of AS progression. It has been shown that enhanced valvular lipid oxidation may drive AS development by leading to the activation of valvular interstitial cells (VICs), the most abundant valvular cells having a major contribution to valve calcification. Since VICs are able to release pro-inflammatory cytokines, clotting factors and proteins involved in calcification, strategies targeting these cell activations seem promising as therapeutic interventions. Recently, non-vitamin K antagonist oral anticoagulants (NOACs) have been shown to inhibit activation of VICs. CONCLUSION Several novel molecular pathways of AS development have been identified over the past few years. Therapies using PCSK9 inhibitors, simvastatin/ezetimibe combination, lipoprotein(a)-lowering therapy are highly promising candidates as therapeutics in the prevention of mild AS progression, while preclinical studies show that NOACs may inhibit valvular inflammation and coagulation activation and slower the rate of AS progression.
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Affiliation(s)
- Joanna Natorska
- John Paul II Hospital, Kraków, Poland.,Institute of Cardiology, Jagiellonian University Medical College, Kraków, Poland
| | - Magdalena Kopytek
- John Paul II Hospital, Kraków, Poland.,Institute of Cardiology, Jagiellonian University Medical College, Kraków, Poland
| | - Anetta Undas
- John Paul II Hospital, Kraków, Poland.,Institute of Cardiology, Jagiellonian University Medical College, Kraków, Poland
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18
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Sruthi CR, Raghu KG. Advanced glycation end products and their adverse effects: The role of autophagy. J Biochem Mol Toxicol 2021; 35:e22710. [PMID: 33506967 DOI: 10.1002/jbt.22710] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 11/27/2020] [Accepted: 01/09/2021] [Indexed: 12/14/2022]
Abstract
The critical roles played by advanced glycation endproducts (AGEs) accumulation in diabetes and diabetic complications have gained intense recognition. AGEs interfere with the normal functioning of almost every organ with multiple actions like apoptosis, inflammation, protein dysfunction, mitochondrial dysfunction, and oxidative stress. However, the development of a potential treatment strategy is yet to be established. Autophagy is an evolutionarily conserved cellular process that maintains cellular homeostasis with the degradation and recycling systems. AGEs can activate autophagy signaling, which could be targeted as a therapeutic strategy against AGEs induced problems. In this review, we have provided an overview of the adverse effects of AGEs, and we put forth the notion that autophagy could be a promising targetable strategy against AGEs.
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Affiliation(s)
- C R Sruthi
- Biochemistry and Molecular Mechanism Laboratory, Agro-processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, Kerala, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - K G Raghu
- Biochemistry and Molecular Mechanism Laboratory, Agro-processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, Kerala, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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19
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Waghela BN, Vaidya FU, Ranjan K, Chhipa AS, Tiwari BS, Pathak C. AGE-RAGE synergy influences programmed cell death signaling to promote cancer. Mol Cell Biochem 2020; 476:585-598. [PMID: 33025314 DOI: 10.1007/s11010-020-03928-y] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 09/23/2020] [Indexed: 12/11/2022]
Abstract
Advanced glycation end products (AGEs) are formed as a result of non-enzymatic reaction between the free reducing sugars and proteins, lipids, or nucleic acids. AGEs are predominantly synthesized during chronic hyperglycemic conditions or aging. AGEs interact with their receptor RAGE and activate various sets of genes and proteins of the signal transduction pathway. Accumulation of AGEs and upregulated expression of RAGE is associated with various pathological conditions including diabetes, cardiovascular diseases, neurodegenerative disorders, and cancer. The role of AGE-RAGE signaling has been demonstrated in the progression of various types of cancer and other pathological disorders. The expression of RAGE increases manifold during cancer progression. The activation of AGE-RAGE signaling also perturbs the cellular redox balance and modulates various cell death pathways. The programmed cell death signaling often altered during the progression of malignancies. The cellular reprogramming of AGE-RAGE signaling with cell death machinery during tumorigenesis is interesting to understand the complex signaling mechanism of cancer cells. The present review focus on multiple molecular paradigms relevant to cell death particularly Apoptosis, Autophagy, and Necroptosis that are considerably influenced by the AGE-RAGE signaling in the cancer cells. Furthermore, the review also attempts to shed light on the provenience of AGE-RAGE signaling on oxidative stress and consequences of cell survival mechanism of cancer cells.
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Affiliation(s)
- Bhargav N Waghela
- Cell Biology Laboratory, School of Biological Sciences & Biotechnology, Indian Institute of Advanced Research, Koba Institutional Area, Gandhinagar, Gujarat, 382426, India
| | - Foram U Vaidya
- Cell Biology Laboratory, School of Biological Sciences & Biotechnology, Indian Institute of Advanced Research, Koba Institutional Area, Gandhinagar, Gujarat, 382426, India
| | - Kishu Ranjan
- Department of Internal Medicine, Section of Digestive Diseases, Yale University, New Haven, CT, 06519, USA
| | - Abu Sufiyan Chhipa
- Cell Biology Laboratory, School of Biological Sciences & Biotechnology, Indian Institute of Advanced Research, Koba Institutional Area, Gandhinagar, Gujarat, 382426, India
| | - Budhi Sagar Tiwari
- Cell Biology Laboratory, School of Biological Sciences & Biotechnology, Indian Institute of Advanced Research, Koba Institutional Area, Gandhinagar, Gujarat, 382426, India
| | - Chandramani Pathak
- Cell Biology Laboratory, School of Biological Sciences & Biotechnology, Indian Institute of Advanced Research, Koba Institutional Area, Gandhinagar, Gujarat, 382426, India.
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20
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Mei YM, Li L, Wang XQ, Zhang M, Zhu LF, Fu YW, Xu Y. AGEs induces apoptosis and autophagy via reactive oxygen species in human periodontal ligament cells. J Cell Biochem 2020; 121:3764-3779. [PMID: 31680325 DOI: 10.1002/jcb.29499] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Accepted: 10/08/2019] [Indexed: 01/24/2023]
Abstract
The apoptosis of human periodontal ligament cells (HPDLCs) may be an important factor of the negative effect of advanced glycation end products (AGEs) on the periodontal tissue of diabetic patients. However, the pathways or potential effects of apoptosis in AGEs-treated HPDLCs have not been fully elucidated. Autophagy is closely related to apoptosis. Herein, we investigated the potential mechanism of apoptosis and autophagy in HPDLCs treated with AGEs via an in vitro model. We found that AGEs-treated HPDLCs showed a time- and concentration-dependent reduction in the cell survival rate. The mitochondrial-dependent apoptosis was induced in AGEs-treated HPDLCs, as confirmed by the mitochondrial membrane potential depolarization, decreased Bcl-2 expression, increased Bax expression, and increased caspase-3 and PARP cleavage. Autophagy was also induced in AGEs-treated HPDLCs, as indicated by the conversion of LC3-II/LC3-I and the presence of autophagosomes. Interestingly, our study results suggested that apoptosis and autophagy were related to reactive oxygen species (ROS) production. In addition, AGEs-induced autophagy acted as a latent factor in decreasing the generation of ROS in HPDLCs and protecting against the AGEs-induced apoptosis. In summary, our study shows that ROS are essential in AGEs-induced HPDLCs apoptosis and autophagy, which may be a molecular mechanism for the repairment of ROS-induced damage in HPDLCs treated with AGEs to promote cell survival. The present study might provide new insights into the therapeutic targeting of HPDLCs autophagy, which could be an additional strategy for periodontitis in patients with diabetes mellitus.
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Affiliation(s)
- You-Min Mei
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China.,Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China.,Department of Periodontology, Nantong Stomatological Hospital, Nantong, China
| | - Lu Li
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China.,Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
| | - Xiao-Qian Wang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China.,Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
| | - Min Zhang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China.,Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
| | - Li-Fang Zhu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China.,Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
| | - Yong-Wei Fu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China.,Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
| | - Yan Xu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China.,Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
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21
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Zhu JL, Cai YQ, Long SL, Chen Z, Mo ZC. The role of advanced glycation end products in human infertility. Life Sci 2020; 255:117830. [PMID: 32450172 DOI: 10.1016/j.lfs.2020.117830] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 05/09/2020] [Accepted: 05/19/2020] [Indexed: 01/03/2023]
Abstract
Advanced glycation end products (AGEs) are heterogeneous products of the non-enzymatic interaction between proteins and reducing sugars. Numerous studies have shown that AGEs are associated with senescence, diabetes, vascular disease, aging and kidney disease. Infertility has been affected approximately 10 to15% of couples of reproductive ages. AGEs accumulation has been shown to play a crucial role in pathogenesis of infertility-related diseases. The present review provides the generation process, mechanism and pathological significance of AGEs and the novel treatment targeting AGEs for infertility.
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Affiliation(s)
- Jing-Ling Zhu
- Hunan Province Innovative Training Base for Medical Postgraduates, University of South China and Yueyang Women & Children's Medical Center, Yueyang 416000, Hunan, China; Institute of Basic Medical Science, Center for Diabetic Systems Medicine, Guangxi Key Laboratory of Excellence, Guilin Medical University, Guilin 541199, Guangxi, China; Clinical Anatomy & Reproductive Medicine Application Institute, Department of Histology and Embryology, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Ya-Qin Cai
- Institute of Basic Medical Science, Center for Diabetic Systems Medicine, Guangxi Key Laboratory of Excellence, Guilin Medical University, Guilin 541199, Guangxi, China; Clinical Anatomy & Reproductive Medicine Application Institute, Department of Histology and Embryology, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Shuang-Lian Long
- Hunan Province Innovative Training Base for Medical Postgraduates, University of South China and Yueyang Women & Children's Medical Center, Yueyang 416000, Hunan, China
| | - Zhuo Chen
- Hunan Province Innovative Training Base for Medical Postgraduates, University of South China and Yueyang Women & Children's Medical Center, Yueyang 416000, Hunan, China.
| | - Zhong-Cheng Mo
- Institute of Basic Medical Science, Center for Diabetic Systems Medicine, Guangxi Key Laboratory of Excellence, Guilin Medical University, Guilin 541199, Guangxi, China.
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22
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Ravi R, Ragavachetty Nagaraj N, Subramaniam Rajesh B. Effect of advanced glycation end product on paraoxonase 2 expression: Its impact on endoplasmic reticulum stress and inflammation in HUVECs. Life Sci 2020; 246:117397. [DOI: 10.1016/j.lfs.2020.117397] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 01/31/2020] [Accepted: 02/02/2020] [Indexed: 12/23/2022]
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23
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Zhou Q, Cheng KW, Gong J, Li ETS, Wang M. Apigenin and its methylglyoxal-adduct inhibit advanced glycation end products-induced oxidative stress and inflammation in endothelial cells. Biochem Pharmacol 2019; 166:231-241. [PMID: 31158339 DOI: 10.1016/j.bcp.2019.05.027] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 05/29/2019] [Indexed: 02/08/2023]
Abstract
Protein glycation in the body can lead to malfunction of intracellular and extracellular proteins. Reactive carbonyl species (RCS) have been identified to be key intermediates in the reactions. The reaction products, generally termed as advanced glycation end products (AGEs), have been implicated in the development of diabetic complications. In this study, the activity of apigenin (API), a natural flavone in scavenging RCS and the molecular mechanism involved in its protective effect against AGEs-induced oxidative stress and inflammation were examined in vitro. Results showed that API could directly trap methylglyoxal (MGO) to form API-MGO adducts, thus inhibiting AGEs formation. API and di-apigenin adduct (DMA) were found to inhibit AGEs-induced oxidative stress and inflammation in human umbilical vein endothelial cells (HUVECs) by significantly suppressing reactive oxygen species (ROS) production (30% relative to control) and decreasing the protein expression of pro-inflammatory cytokines and adhesion molecules by 30-70%. Further mechanistic investigation revealed that the protective effect was likely mediated via suppression of the extracellular-signal-regulated kinase 1/2 (ERK)/nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) signaling pathway initiated by AGEs-RAGE (receptor for AGEs) interaction and induction of ERK/nuclear factor (erythroid-derived 2)-like 2 (Nrf2) pathway with subsequent up-regulation of antioxidant defense molecules. In summary, our results suggest that API possesses great potential to protect against AGEs-associated health disorders by modulating cellular inflammatory and antioxidant defense signaling pathways.
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Affiliation(s)
- Qian Zhou
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Ka-Wing Cheng
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China; Institute for Advanced Study, Shenzhen University, Nanshan District, Shenzhen, China
| | - Jun Gong
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China; Institute for Advanced Study, Shenzhen University, Nanshan District, Shenzhen, China
| | - Edmund T S Li
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Mingfu Wang
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
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24
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Zhou Q, Gong J, Wang M. Phloretin and its methylglyoxal adduct: Implications against advanced glycation end products-induced inflammation in endothelial cells. Food Chem Toxicol 2019; 129:291-300. [PMID: 31059746 DOI: 10.1016/j.fct.2019.05.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 04/22/2019] [Accepted: 05/03/2019] [Indexed: 12/11/2022]
Abstract
Methylglyoxal (MGO), a cytotoxic factor, reacts irreversibly with the side chains of lysine, cysteine, and arginine residues in proteins to form advanced glycation end products (AGEs) which might be a major pathological factor associated with diabetic complications. Thus, it is necessary to prevent or alleviate such diseases through inhibiting the formation of AGEs or lowering these AGEs-induced cellular damages. Based on our previous work, it was known that phloretin, an apple polyphenol, can inhibit the formation of AGEs under simulated physiological conditions. In this study, we found that phloretin prevented the formation of AGEs through trapping MGO in human umbilical endothelial cells (HUVECs). The phloretin-MGO adducts were analyzed in PBS and HUVECs. Surprisingly, only 1 MGO-phloretin adduct was detected in HUVECs, which was formed within 0.5 h and metabolized eventually within 24 h. The specific phloretin-MGO adduct was synthesized and identified by MS and NMR analysis. Its anti-inflammatory effect against AGEs was further investigated together with the parent compound, phloretin, which was proved to be through RAGE/p38 MAPK/NF-κB signaling pathway. Taken together, our data indicated the positive role of phloretin-MGO adduct on phloretin's protective effects, which might offer a new insight into the action mechanism of polyphenols against AGEs-induced damages.
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Affiliation(s)
- Qian Zhou
- School of Biological Sciences, The University of Hong Kong, Hong Kong, China
| | - Jun Gong
- Faculty of Health Sciences, University of Macau, Macau, China
| | - Mingfu Wang
- School of Biological Sciences, The University of Hong Kong, Hong Kong, China.
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25
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Bermúdez V, Tenconi PE, Giusto NM, Mateos MV. Lipopolysaccharide-Induced Autophagy Mediates Retinal Pigment Epithelium Cells Survival. Modulation by the Phospholipase D Pathway. Front Cell Neurosci 2019; 13:154. [PMID: 31327962 PMCID: PMC6497095 DOI: 10.3389/fncel.2019.00154] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 04/08/2019] [Indexed: 12/12/2022] Open
Abstract
Inflammation and oxidative stress are common factors involved in the pathogenesis of retinal diseases, such as aged-related macular degeneration (AMD) and diabetic retinopathy (DR). Autophagy is a catabolic process essential to cell survival in response to stress. This process is highly active in retinal pigment epithelium (RPE) cells. Our previous findings demonstrated that lipopolysaccharide (LPS) induces an inflammatory response of RPE cells that implies classical phospholipases D (PLD1 and 2) activation, cyclooxygenase-2 (COX-2) expression, prostaglandin E2 (PGE2) production and reduced cell viability. In this work, we studied the autophagic process and its modulation by the PLD pathway in D407 and ARPE-19 RPE cells exposed to LPS. LPS (10 μg/ml or 25 μg/ml) exposure for 24 h increased light chain 3B-II (LC3B-II) content (an autophagy marker) and LC3B-positive punctate structures in both RPE cell lines studied. Next, the drug bafilomycin A1 (BAF, 50 nM) was used to block the autophagic flux. In cells pre-incubated with BAF, LC3B-II and sequestosome 1 (SQSTM1/p62) levels and autophagosome-like structures were increased by LPS, demonstrating that the inflammatory injury increases the autophagic process in RPE cells. To study the role of the PLD pathway, cells were pre-incubated for 1 h with selective PLD1 (VU0359595) or PLD2 (VU0285655-1) inhibitors prior to LPS addition. Under control condition, LC3B-positive punctate structures were increased in cells pre-incubated with PLD2 inhibitor while with PLD1 inhibitor were increased in cells exposed to LPS. MTT reduction assays showed that early autophagy inhibitors, 3-methyladenin (3-MA) or LY294002, enhanced the loss in cell viability induced by LPS exposure for 48 h. On the contrary, the inhibition of PLD1 and PLD2 prevented the loss in cell viability induced by LPS. In conclusion, our results show that even though LPS treatment promotes an inflammatory response in RPE cells, it also triggers the activation of the autophagic process which in turn may serve as a protective mechanism for the cells. In addition, we demonstrate that the PLD pathway modulates the autophagic process in RPE cells. Our findings contribute to the knowledge of the molecular basis of retinal inflammatory and degenerative diseases and open new avenues for potential therapeutic exploration.
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Affiliation(s)
- Vicente Bermúdez
- Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bahía Blanca, Argentina.,Departamento de Biología, Bioquímica y Farmacia (DBByF), Universidad Nacional del Sur (UNS), Bahía Blanca, Argentina
| | - Paula Estefanía Tenconi
- Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bahía Blanca, Argentina.,Departamento de Biología, Bioquímica y Farmacia (DBByF), Universidad Nacional del Sur (UNS), Bahía Blanca, Argentina
| | - Norma María Giusto
- Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bahía Blanca, Argentina.,Departamento de Biología, Bioquímica y Farmacia (DBByF), Universidad Nacional del Sur (UNS), Bahía Blanca, Argentina
| | - Melina Valeria Mateos
- Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bahía Blanca, Argentina.,Departamento de Biología, Bioquímica y Farmacia (DBByF), Universidad Nacional del Sur (UNS), Bahía Blanca, Argentina
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26
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Wang Z, Liu B, Zhu J, Wang D, Wang Y. Nicotine-mediated autophagy of vascular smooth muscle cell accelerates atherosclerosis via nAChRs/ROS/NF-κB signaling pathway. Atherosclerosis 2019; 284:1-10. [PMID: 30856513 DOI: 10.1016/j.atherosclerosis.2019.02.008] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 12/22/2018] [Accepted: 02/01/2019] [Indexed: 01/10/2023]
Abstract
BACKGROUND AND AIMS Cigarette smoking is an established risk factor for atherosclerosis. Nicotine, the major constituent of cigarettes, mediates the phenotype switching of vascular smooth muscle cells (VSMCs) and contributes to atherogenesis. Recent studies show that autophagy regulates atherogenesis via several pathways. The aim of this study is to determine whether nicotine regulates autophagy and subsequently mediates the phenotypic transition of VSMCs. METHODS AND RESULTS Oil Red O and HE staining of aortic sections of ApoE-/- mice showed that nicotine promoted atherosclerosis, and in situ expression of α-SMA indicated the involvement of VSMCs. Western blotting documented that nicotine induced the aorta autophagy. Cultured VSMCs treated with nicotine resulted in the increase of LC3 II-to-LC3 I ratio and the decrease of P62, along with GFP-LC3 puncta assay and transmission electron microscopy, further reflecting nicotine-induced autophagy. In addition, Western blotting and quantitative real-time PCR showed that VSMCs exposed to nicotine underwent changes in the expression of differentiation markers (α-SMA, SM22α and osteopontin), confirming the role of nicotine in VSMC differentiation. Transwell migration and scratch assays demonstrated that nicotine increased the migratory capacity of VSMCs. Finally, nicotine also increased the levels of reactive oxygen species (ROS), as measured by DCFH-DA staining. After respectively inhibiting autophagy (3-MA), oxidative stress (NAC), NF-κB activity (BAY 11-7082, si-p65) and nicotinic acetylcholine receptors (nAChRs, hexamethonium), nicotine-induced autophagy and VSMC phenotype switching were reversed. CONCLUSIONS Nicotine-induced autophagy promotes the phenotype switching of VSMCs and accelerates atherosclerosis, which is partly mediated by the nAChRs/ROS/NF-κB signaling pathway.
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Affiliation(s)
- Zhiyan Wang
- Department of Cardiology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Bei Liu
- Department of Cardiology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Jumo Zhu
- Department of Cardiology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Di Wang
- Department of Cardiology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Yi Wang
- Department of Cardiology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China.
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27
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Walters DC, Jansen EEW, Ainslie GR, Salomons GS, Brown MN, Schmidt MA, Roullet J, Gibson KM. Preclinical tissue distribution and metabolic correlations of vigabatrin, an antiepileptic drug associated with potential use-limiting visual field defects. Pharmacol Res Perspect 2019; 7:e00456. [PMID: 30631446 PMCID: PMC6321982 DOI: 10.1002/prp2.456] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 12/06/2018] [Accepted: 12/07/2018] [Indexed: 01/30/2023] Open
Abstract
Vigabatrin (VGB; (S)-(+)/(R)-(-) 4-aminohex-5-enoic acid), an antiepileptic irreversibly inactivating GABA transaminase (GABA-T), manifests use-limiting ocular toxicity. Hypothesizing that the active S enantiomer of VGB would preferentially accumulate in eye and visual cortex (VC) as one potential mechanism for ocular toxicity, we infused racemic VGB into mice via subcutaneous minipump at 35, 70, and 140 mg/kg/d (n = 6-8 animals/dose) for 12 days. VGB enantiomers, total GABA and β-alanine (BALA), 4-guanidinobutyrate (4-GBA), and creatine were quantified by mass spectrometry in eye, brain, liver, prefrontal cortex (PFC), and VC. Plasma VGB concentrations increased linearly by dose (3 ± 0.76 (35 mg/kg/d); 15.1 ± 1.4 (70 mg/kg/d); 34.6 ± 3.2 μmol/L (140 mg/kg/d); mean ± SEM) with an S/R ratio of 0.74 ± 0.02 (n = 14). Steady state S/R ratios (35, 70 mg/kg/d doses) were highest in eye (5.5 ± 0.2; P < 0.0001), followed by VC (3.9 ± 0.4), PFC (3.6 ± 0.3), liver (2.9 ± 0.1), and brain (1.5 ± 0.1; n = 13-14 each). Total VGB content of eye exceeded that of brain, PFC and VC at all doses. High-dose VGB diminished endogenous metabolite production, especially in PFC and VC. GABA significantly increased in all tissues (all doses) except brain; BALA increases were confined to liver and VC; and 4-GBA was prominently increased in brain, PFC and VC (and eye at high dose). Linear correlations between enantiomers and GABA were observed in all tissues, but only in PFC/VC for BALA, 4-GBA, and creatine. Preferential accumulation of the VGB S isomer in eye and VC may provide new insight into VGB ocular toxicity.
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Affiliation(s)
- Dana C. Walters
- Department of PharmacotherapyCollege of Pharmacy and Pharmaceutical SciencesWashington State UniversitySpokaneWashington
| | - Erwin E. W. Jansen
- Metabolic LaboratoryDepartment of Clinical ChemistryAmsterdam University Medical CenterAmsterdamThe Netherlands
| | - Garrett R. Ainslie
- Department of PharmacotherapyCollege of Pharmacy and Pharmaceutical SciencesWashington State UniversitySpokaneWashington
| | - Gajja S. Salomons
- Metabolic LaboratoryDepartment of Clinical ChemistryAmsterdam University Medical CenterAmsterdamThe Netherlands
| | - Madalyn N. Brown
- Department of PharmacotherapyCollege of Pharmacy and Pharmaceutical SciencesWashington State UniversitySpokaneWashington
| | - Michelle A. Schmidt
- Department of PharmacotherapyCollege of Pharmacy and Pharmaceutical SciencesWashington State UniversitySpokaneWashington
| | - Jean‐Baptiste Roullet
- Department of PharmacotherapyCollege of Pharmacy and Pharmaceutical SciencesWashington State UniversitySpokaneWashington
| | - K. M. Gibson
- Department of PharmacotherapyCollege of Pharmacy and Pharmaceutical SciencesWashington State UniversitySpokaneWashington
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28
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Rojas A, Añazco C, González I, Araya P. Extracellular matrix glycation and receptor for advanced glycation end-products activation: a missing piece in the puzzle of the association between diabetes and cancer. Carcinogenesis 2018; 39:515-521. [PMID: 29373651 DOI: 10.1093/carcin/bgy012] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 01/22/2018] [Indexed: 02/07/2023] Open
Abstract
A growing body of epidemiologic evidence suggests that people with diabetes are at a significantly higher risk of many forms of cancer. However, the molecular mechanisms underlying this association are not fully understood. Cancer cells are surrounded by a complex milieu, also known as tumor microenvironment, which contributes to the development and metastasis of tumors. Of note, one of the major components of this niche is the extracellular matrix (ECM), which becomes highly disorganized during neoplastic progression, thereby stimulating cancer cell transformation, growth and spread. One of the consequences of chronic hyperglycemia, the most frequently observed sign of diabetes and the etiological source of diabetes complications, is the irreversible glycation and oxidation of proteins and lipids leading to the formation of the advanced glycation end-products (AGEs). These compounds may covalently crosslink and biochemically modify structure and functions of many proteins, and AGEs accumulation is particularly high in long-living proteins with low biological turnover, features that are shared by most, if not all, ECM proteins. AGEs-modified proteins are recognized by AGE-binding proteins, and thus glycated ECM components have the potential to trigger Receptor for advanced glycation end-products-dependent mechanisms. The biological consequence of receptor for advanced glycation end-products activation mechanisms seems to be connected, in different ways, to drive some hallmarks of cancer onset and tumor growth. The present review intends to highlight the potential impact of ECM glycation on tumor progression by triggering receptor for advanced glycation end-products-mediated mechanisms.
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Affiliation(s)
- Armando Rojas
- Biomedical Research Laboratories, Preclinical Sciences Department, Medicine Faculty, Catholic University of Maule, Talca, Chile
| | - Carolina Añazco
- Biomedical Research Laboratories, Preclinical Sciences Department, Medicine Faculty, Catholic University of Maule, Talca, Chile
| | - Ileana González
- Biomedical Research Laboratories, Preclinical Sciences Department, Medicine Faculty, Catholic University of Maule, Talca, Chile
| | - Paulina Araya
- Biomedical Research Laboratories, Preclinical Sciences Department, Medicine Faculty, Catholic University of Maule, Talca, Chile
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29
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GRP78 protects CHO cells from ribosylation. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2018; 1865:629-637. [DOI: 10.1016/j.bbamcr.2018.02.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 01/29/2018] [Accepted: 02/01/2018] [Indexed: 12/28/2022]
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30
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Zhang S, Chai R, Yang YY, Guo SQ, Wang S, Guo T, Xu SF, Zhang YH, Wang ZY, Guo C. Chronic diabetic states worsen Alzheimer neuropathology and cognitive deficits accompanying disruption of calcium signaling in leptin-deficient APP/PS1 mice. Oncotarget 2018; 8:43617-43634. [PMID: 28467789 PMCID: PMC5546429 DOI: 10.18632/oncotarget.17116] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 04/03/2017] [Indexed: 02/06/2023] Open
Abstract
The coincidences between Alzheimer’s disease (AD) and type 2 diabetes mellitus (T2DM) are so compelling that it is attractive to speculate that diabetic conditions might aggravate AD pathologies by calcium dysfunction, although the understanding of the molecular mechanisms involved remains elusive. The present work was undertaken to investigate whether calcium dyshomeostasis is associated with the exacerbated Alzheimer-like cognitive dysfunction observed in diabetic conditions in APP/PS1-ob/ob mice, which were generated by crossing ob/ob mice with APP/PS1 mice. We confirmed that the diabetic condition can aggravate not only Aβ deposition but also tau phosphorylation, synaptic loss, neuronal death, and inflammation, exacerbating cognitive impairment in AD mice. More importantly, we found that the diabetic condition dramatically elevated calcium levels in APP/PS1 mice, thereby stimulating the phosphorylation of the calcium-dependent kinases. Our findings suggest that controlling over-elevation of intracellular calcium may provide novel insights for approaching AD in diabetic patients and delaying AD progression.
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Affiliation(s)
- Shuai Zhang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Rui Chai
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Ying-Ying Yang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Shi-Qi Guo
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Shan Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Tian Guo
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Shuang-Feng Xu
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Yan-Hui Zhang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Zhan-You Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Chuang Guo
- College of Life and Health Sciences, Northeastern University, Shenyang, China
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31
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Zhou DZ, Sun HY, Yue JQ, Peng Y, Chen YM, Zhong ZJ. Dihydromyricetin induces apoptosis and cytoprotective autophagy through ROS-NF-κB signalling in human melanoma cells. Free Radic Res 2018; 51:517-528. [PMID: 28482716 DOI: 10.1080/10715762.2017.1328552] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Dihydromyricetin (DHM), a Rattan tea extract, has recently been shown to have anti-cancer activity in mammalian cells. In this study, we investigated the effect of DHM on human melanoma cells. Apart from induction of apoptosis, we demonstrated that DHM induced an autophagic response. Moreover, pharmacological inhibition or genetic blockade of autophagy enhanced DHM-induced cell death and apoptosis, indicating the cytoprotective role of autophagy in DHM-treated human melanoma cells. Further study suggested that the nuclear factor kappa B (NF-κB) signalling pathway was involved in DHM-induced autophagy. Moreover, N-acetyl-cysteine (NAC), an ROS scavenger, abrogated the effects of DHM on NF-κB-dependent autophagy. Taken together, this evidence demonstrates that a strategy of blocking ROS-NF-κB-dependent autophagy to enhance the activity of DHM warrants further attention for the treatment of human melanoma.
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Affiliation(s)
- Ding-Zhou Zhou
- a Department of Neurosurgery , The Central Hospital of ShaoYang , Shaoyang , PR China
| | - Hai-Ying Sun
- a Department of Neurosurgery , The Central Hospital of ShaoYang , Shaoyang , PR China
| | - Jing-Qi Yue
- a Department of Neurosurgery , The Central Hospital of ShaoYang , Shaoyang , PR China
| | - Yong Peng
- b Department of Neurosurgery , The Second Xiangya Hospital of Central South University , Changsha , PR China
| | - Yi-Min Chen
- a Department of Neurosurgery , The Central Hospital of ShaoYang , Shaoyang , PR China
| | - Zhi-Jian Zhong
- a Department of Neurosurgery , The Central Hospital of ShaoYang , Shaoyang , PR China
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Iborra RT, Machado-Lima A, Okuda LS, Pinto PR, Nakandakare ER, Machado UF, Correa-Giannella ML, Pickford R, Woods T, Brimble MA, Rye KA, Lu R, Yokoyama S, Passarelli M. AGE-albumin enhances ABCA1 degradation by ubiquitin-proteasome and lysosomal pathways in macrophages. J Diabetes Complications 2018; 32:1-10. [PMID: 29097054 DOI: 10.1016/j.jdiacomp.2017.09.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 09/06/2017] [Accepted: 09/20/2017] [Indexed: 12/22/2022]
Abstract
BACKGROUND AND AIMS Advanced glycation end products (AGEs) induce cellular oxidative/endoplasmic reticulum stress and inflammation. We investigated its underlying mechanisms for atherogenesis focusing on regulation of ABCA1 protein decay in macrophages. METHODS The ABCA1 decay rate was evaluated in macrophages after treatment with LXR agonist and by incubation with control (C) or AGE-albumin concomitant or not with cycloheximide, MG-132, ammonium chloride and calpain inhibitors were utilized to inhibit, respectively, proteasome, lysosome and ABCA1 proteolysis at cell surface. ABCA1 was determined by immunoblot and the protein decay rate calculated along time by the slope of the linear regression. Ubiquitination level was determined in ABCA1 immunoprecipitated from whole cell lysate or bulk cell membrane. AGE effect was also analyzed in THP-1 cells transfected with siRNA-RAGE. Carboxymethyllysine (CML) and pyrraline (PYR) were determined by LC/MS. One-way ANOVA and Student t test were utilized to compare results. RESULTS CML and PYR-albumin were higher in AGE-albumin as compared to C. AGE-albumin reduced ABCA1 in J774 and THP-1 macrophages (20-30%) and induced a higher ABCA1 ubiquitination and a faster protein decay rate that was dependent on the presence of AGE during the kinetics of measurement in the presence of cycloheximide. Proteasomal inhibition restored and lysosomal inhibition partially recovered ABCA1 in cells treated with AGE-albumin. Calpain inhibition was not able to rescue ABCA1. RAGE knockdown prevented the reduction in ABCA1 elicited by AGE. CONCLUSIONS AGE-albumin diminishes ABCA1 by accelerating its degradation through the proteasomal and lysosomal systems. This may increase lipid accumulation in macrophages by diminishing cholesterol efflux via RAGE signaling contributing to atherosclerosis in diabetes mellitus.
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Affiliation(s)
- Rodrigo Tallada Iborra
- Laboratorio de Lipides, LIM-10, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de Sao Paulo, São Paulo, Brazil
| | - Adriana Machado-Lima
- Laboratorio de Lipides, LIM-10, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de Sao Paulo, São Paulo, Brazil; Universidade São Judas Tadeu, São Paulo, Brazil
| | - Ligia Shimabukuro Okuda
- Laboratorio de Lipides, LIM-10, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de Sao Paulo, São Paulo, Brazil
| | - Paula Ramos Pinto
- Laboratorio de Lipides, LIM-10, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de Sao Paulo, São Paulo, Brazil
| | - Edna Regina Nakandakare
- Laboratorio de Lipides, LIM-10, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de Sao Paulo, São Paulo, Brazil
| | - Ubiratan Fabres Machado
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Maria Lucia Correa-Giannella
- Laboratorio de Carboidratos e Radioimunoinsaio, LIM 18, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de Sao Paulo, São Paulo, Brazil; Programa de pós-Graduação em Medicina, Universidade Nove de Julho, São Paulo, Brazil
| | - Russell Pickford
- Bioanalytical Mass Spectrometry Facility, University of New South Wales, Sydney, Australia
| | - Tom Woods
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Kerry-Anne Rye
- Lipid Research Group, School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, Australia
| | - Rui Lu
- Nutritional Health Science Research Center at Chubu University, Kasugai, Japan
| | - Shinji Yokoyama
- Nutritional Health Science Research Center at Chubu University, Kasugai, Japan
| | - Marisa Passarelli
- Laboratorio de Lipides, LIM-10, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de Sao Paulo, São Paulo, Brazil.
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Pan Z, Liu L, Nie W, Miggin S, Qiu F, Cao Y, Chen J, Yang B, Zhou Y, Lu J, Yang L. Long non-coding RNA AGER-1 functionally upregulates the innate immunity gene AGER and approximates its anti-tumor effect in lung cancer. Mol Carcinog 2017; 57:305-318. [PMID: 29068471 DOI: 10.1002/mc.22756] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 10/08/2017] [Accepted: 10/23/2017] [Indexed: 12/17/2022]
Abstract
Little is known about long non-coding RNA (lncRNA) related to innate immunity in lung cancer. The advanced glycosylation end-product specific receptor (AGER) belongs to the immunoglobulin superfamily, and currently, is the only innate immune pattern-recognition receptor whose abnormal expression has been detected in lung cancer. We aimed to explore the lncRNA that is related to AGER and test its effect on lung carcinogenesis. We selected one lncRNA whose chromosome location is in close proximity to AGER namely lnc-AGER-1 (defined as lncAGER). The expression of lncAGER was tested in 276 pairs of lung cancer tissues and adjacent lung normal tissues, and its correlation with lung cancer clinical progress was analyzed. A series of assays were further used to assess the biological function of lncAGER on lung cancer development, tumor immunity and autophagy. LncAGER expression was moderately correlated with AGER expression (r = 0.360, P = 2.15 × 10-18 ) underlying a mechanism that lncAGER upregulates AGER by competitively binding to miRNA-185. LncAGER was significantly down-regulated in 76.4% of lung cancer tissues compared to adjacent normal tissues due to promoter hypermethylation. Over-expression of the lncRNA resulted in significant decreases in proliferation rate, migration ability, colony formation efficiency of lung cancer cells and tumor growth in nude mice. Notably, lncAGER possibly conduced to enhancement of cytotoxic effect of THP1. Additionally, the lncRNA also promoted cell apoptosis by strengthening autophagy. Taken together, these observations suggest that lncAGER has an inhibitory effect on lung cancer development via AGER, which may serve as a target for lung cancer treatment.
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Affiliation(s)
- Zihua Pan
- The State Key Lab of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Yuexiu District, Guangzhou, P.R. China
- The State Key Lab of Respiratory Disease, The Institute for Chemical Carcinogenesis, Collaborative Innovation Center for Environmental Toxicity, Guangzhou Medical University, Xinzao, Panyu District, Guangzhou, P.R. China
| | - Li Liu
- The State Key Lab of Respiratory Disease, The Institute for Chemical Carcinogenesis, Collaborative Innovation Center for Environmental Toxicity, Guangzhou Medical University, Xinzao, Panyu District, Guangzhou, P.R. China
| | - Wenjing Nie
- The State Key Lab of Respiratory Disease, The Institute for Chemical Carcinogenesis, Collaborative Innovation Center for Environmental Toxicity, Guangzhou Medical University, Xinzao, Panyu District, Guangzhou, P.R. China
| | - Sinead Miggin
- Department of Biology, Maynooth University, Maynooth, Ireland
| | - Fuman Qiu
- The State Key Lab of Respiratory Disease, The Institute for Chemical Carcinogenesis, Collaborative Innovation Center for Environmental Toxicity, Guangzhou Medical University, Xinzao, Panyu District, Guangzhou, P.R. China
| | - Yi Cao
- The State Key Lab of Respiratory Disease, The Institute for Chemical Carcinogenesis, Collaborative Innovation Center for Environmental Toxicity, Guangzhou Medical University, Xinzao, Panyu District, Guangzhou, P.R. China
| | - Jinbin Chen
- The State Key Lab of Respiratory Disease, The Institute for Chemical Carcinogenesis, Collaborative Innovation Center for Environmental Toxicity, Guangzhou Medical University, Xinzao, Panyu District, Guangzhou, P.R. China
| | - Binyao Yang
- The State Key Lab of Respiratory Disease, The Institute for Chemical Carcinogenesis, Collaborative Innovation Center for Environmental Toxicity, Guangzhou Medical University, Xinzao, Panyu District, Guangzhou, P.R. China
| | - Yifeng Zhou
- Department of Genetics, Medical College of Soochow University, Suzhou, P.R. China
| | - Jiachun Lu
- The State Key Lab of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Yuexiu District, Guangzhou, P.R. China
- The State Key Lab of Respiratory Disease, The Institute for Chemical Carcinogenesis, Collaborative Innovation Center for Environmental Toxicity, Guangzhou Medical University, Xinzao, Panyu District, Guangzhou, P.R. China
| | - Lei Yang
- The State Key Lab of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Yuexiu District, Guangzhou, P.R. China
- The State Key Lab of Respiratory Disease, The Institute for Chemical Carcinogenesis, Collaborative Innovation Center for Environmental Toxicity, Guangzhou Medical University, Xinzao, Panyu District, Guangzhou, P.R. China
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Zeng YC, Peng LS, Zou L, Huang SF, Xie Y, Mu GP, Zeng XH, Zhou XL, Zeng YC. Protective effect and mechanism of lycopene on endothelial progenitor cells (EPCs) from type 2 diabetes mellitus rats. Biomed Pharmacother 2017; 92:86-94. [PMID: 28531804 DOI: 10.1016/j.biopha.2017.05.018] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 04/25/2017] [Accepted: 05/04/2017] [Indexed: 12/16/2022] Open
Abstract
Endothelial progenitor cells (EPCs), widely existing in bone marrow and peripheral blood, are involved in the repair of injured vascular endothelium and angiogenesis which are important to diabetic mellitus (DM) patients with vascular complications. The number and the function of EPCs are related to the advanced glycation end products (AGEs) generated in DM patients. Lycopene (Lyc) is an identified natural antioxidant that protects EPCs under the microenvironment of AGEs from damage. However, the underlying mechanism remains unclear. To investigate the effect of Lyc on EPCs, we isolated EPCs from DM rat bone marrow and determined cell proliferation, cell cycle,apoptosis and autophagy of EPCs. The present study showed that 10μg/mL Lyc improved cell proliferation and had low cytotoxicity in the presence of AGEs. In addition, Lyc rescued S phase of the cell cycle arrest, reduced apoptosis rate and decreased autophagic reaction including ROS and mitochondrial membrane potential (MMP) of EPCs. Moreover, Lyc combined use of autophagy inhibitors, 3-MA, had better protective effects. Taken together, our data suggests that Lyc promotes EPCs survival and protect EPCs from apoptosis and oxidative autophagy induced by AGEs, further remaining the number and function of EPCs. This study provides new insights into Lyc protective mechanism of AGEs-induced oxidative autophagy in EPCs from DM patients and offers a new therapy for DM vascular complications.
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Affiliation(s)
- Yao-Chi Zeng
- Department of Clinical Nutrition, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518033, China
| | - Li-Sheng Peng
- Department of Science and education, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518033, China
| | - Liyuan Zou
- Prevention and Health Care Department, The Third Affiliated Hospital, Sun Yat-sen University,Tian-he Road, Guangzhou 510630, China
| | - Shu-Fen Huang
- Department of Health Education, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518033, China
| | - Yi Xie
- Department of Medical Quality Management, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518033, China
| | - Gui-Ping Mu
- Department of Central Laboratory, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518033, China
| | - Xue-Hui Zeng
- Department of Clinical Laboratory, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518033, China
| | - Xi-Lin Zhou
- Department of Clinical Nutrition, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518033, China
| | - Ya-Chi Zeng
- Department of Clinical Nutrition, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518033, China.
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Verma N, Manna SK. Advanced glycation end products (AGE) potentiates cell death in p53 negative cells via upregulaion of NF-kappa B and impairment of autophagy. J Cell Physiol 2017; 232:3598-3610. [DOI: 10.1002/jcp.25828] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 01/25/2017] [Indexed: 12/28/2022]
Affiliation(s)
- Neeharika Verma
- Laboratory of Immunology; Centre for DNA Fingerprinting and Diagnostics; Hyderabad Telangana India
- Graduate Studies; Manipal University; Manipal Karnataka India
| | - Sunil K. Manna
- Laboratory of Immunology; Centre for DNA Fingerprinting and Diagnostics; Hyderabad Telangana India
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Yang T, Wang S, Yang X, Zheng Q, Wang L, Li Q, Wei M, Du Z, Fan Y. Upregulation of Bcl-2 and Its Promoter Signals in CD4+ T Cells during Neuromyelitis Optica Remission. Front Neurosci 2017; 11:11. [PMID: 28174515 PMCID: PMC5258721 DOI: 10.3389/fnins.2017.00011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 01/09/2017] [Indexed: 12/27/2022] Open
Abstract
The homeostatic balance between production and elimination of CD4+ T cells in peripheral blood plays an important role in patients with neuromyelitis optica (NMO). The objective of the present study was to evaluate the anti-apoptosis genes Bcl-2 and its promoter signal (nuclear factor kappa-light-chain-enhancer of activated B cells, NFκB) in CD4+ T cells. Healthy subjects (HS, n = 25) and patients with multiple sclerosis (MS) (n = 25) and NMO (n = 30) in remission were consecutively enrolled in this prospective study between May and December 2015. CD4+ T cells were isolated using magnetic beads coated with anti-CD4 monoclonal antibodies, and gene expression of Bcl-2, NFκB, phosphatidylinositol-4, 5-bisphosphate 3-kinase/protein kinase B (PI3K/Akt), and MAP kinase kinase kinase 7 (MAP3K7) was measured by real-time reverse transcription-polymerase chain reaction (rt-PCR). Cytokines of tumor necrosis factor (TNF)-α and interleukin (IL)-1β were detected using human cytokine multiplex assay. Bcl-2 and NFκB gene expressions were elevated in NMO patients (1.63 ± 0.25; 2.35 ± 0.25) compared with those of HS (0.90 ± 0.11; 1.42 ± 0.22) and/or MS patients (1.03 ± 0.18; 1.55 ± 0.20) (P < 0.05). MAP3K7, but not Akt, was increased in NMO patients (1.23 ± 0.18; 1.56 ± 0.22) (P < 0.01) and was a significant factor related to elevated NFκB gene expressions (P < 0.001). On the other hand, IL-1β and TNF-α were also detected in the study and the results showed that both were elevated in NMO patients (23.84 ± 1.81; 56.40 ± 2.45) (P < 0.01; P < 0.05, respectively). We propose that MAP3K7 induced by IL-1β and TNF-α but not Akt promotes NFκB expression and, in turn, prolongs Bcl-2-mediated survival of CD4+ T cells in NMO patients.
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Affiliation(s)
- Tao Yang
- Department of Traditional Chinese Medicine, Beijing Tiantan Hospital, Capital Medical University Beijing, China
| | - Su Wang
- Department of Tumor Radiotherapy, Hiser Medical Center of Qingdao Qingdao, China
| | - Xiao Yang
- School of Management Science and Engineering, Shandong University of Finance and Economics Jinan, China
| | - Qi Zheng
- Department of Oncology, Guang An Men Hospital of China Academy of Chinese Medical SciencesBeijing, China; School of Traditional Chinese Medicine, Capital Medical UniversityBeijing, China
| | - Lei Wang
- School of Traditional Chinese Medicine, Capital Medical University Beijing, China
| | - Qian Li
- Department of Traditional Chinese Medicine, Beijing Tiantan Hospital, Capital Medical University Beijing, China
| | - Mingyan Wei
- Department of Traditional Chinese Medicine, Beijing Tiantan Hospital, Capital Medical University Beijing, China
| | - Zongpan Du
- Department of Traditional Chinese Medicine, Beijing Tiantan Hospital, Capital Medical University Beijing, China
| | - Yongping Fan
- Department of Traditional Chinese Medicine, Beijing Tiantan Hospital, Capital Medical University Beijing, China
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Zeng M, Wei X, Wu Z, Li W, Zheng Y, Li B, Meng X, Fu X, Fei Y. Simulated ischemia/reperfusion-induced p65-Beclin 1-dependent autophagic cell death in human umbilical vein endothelial cells. Sci Rep 2016; 6:37448. [PMID: 27857190 PMCID: PMC5114588 DOI: 10.1038/srep37448] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Accepted: 10/31/2016] [Indexed: 12/15/2022] Open
Abstract
Myocardial ischemia/reperfusion (I/R) injury detrimentally alters the prognosis of patients undergoing revascularization after acute myocardial infarction. Our previous study demonstrated that NF-κB-induced autophagy plays a detrimental role in cardiac I/R injury using a rabbit myocardial I/R model. In this study, we sought to explore the specific mechanism of this autophagy-mediated cell damage in an in vitro simulated ischemia/reperfusion (sI/R) model using human umbilical vein endothelial cells. Our current study demonstrates that simulated I/R induces autophagy in a p65-Beclin 1-dependent manner, which can be suppressed with the inhibition of NF-κB. Furthermore, rapamycin which promotes autophagy, exacerbates sI/R-induced cell death. While 3-methyladenine rescues cell damage. Our data thus suggest that I/R promotes NF-κB p65 activity mediated Beclin 1-mediated autophagic flux, thereby exacerbating myocardial injury.
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Affiliation(s)
- Min Zeng
- Medical Center, Hainan General Hospital, Haikou, 570311, China
| | - Xin Wei
- Medical Center, Hainan General Hospital, Haikou, 570311, China
| | - Zhiyong Wu
- Medical Center, Hainan General Hospital, Haikou, 570311, China
| | - Wei Li
- Medical Center, Hainan General Hospital, Haikou, 570311, China
| | - Yin Zheng
- Medical Center, Hainan General Hospital, Haikou, 570311, China
| | - Bing Li
- Medical Center, Hainan General Hospital, Haikou, 570311, China
| | - Xuqing Meng
- Medical Center, Hainan General Hospital, Haikou, 570311, China
| | - Xiuhong Fu
- Medical Center, Hainan General Hospital, Haikou, 570311, China
| | - Yi Fei
- Medical Center, Hainan General Hospital, Haikou, 570311, China
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Zhao H, Zhang M, Zhou F, Cao W, Bi L, Xie Y, Yang Q, Wang S. Cinnamaldehyde ameliorates LPS-induced cardiac dysfunction via TLR4-NOX4 pathway: The regulation of autophagy and ROS production. J Mol Cell Cardiol 2016; 101:11-24. [PMID: 27838370 DOI: 10.1016/j.yjmcc.2016.10.017] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 10/24/2016] [Accepted: 10/25/2016] [Indexed: 12/22/2022]
Abstract
Cinnamaldehyde (CA), a major bioactive compound extracted from the essential oil of Cortex Cinnamomi, exhibits anti-inflammatory activity on endotoxemia. Accumulating evidence indicates reactive oxygen species (ROS) and autophagy play a vital role in the cardiac dysfunction during endotoxemia. The aim of this study was to unveil the mechanism of CA on ROS production and autophagy during endotoxemia. Male Sprague-Dawley rats were stimulated by LPS (20mg/kg i.v.) with or without treatment of CA. Cardiac function and histopathological staining were preformed 4h after LPS stimulation. The levels of TNF-α, IL-1β and IL-6 were detected by ELISA. The expression of p-JNK, p-ERK, p-p38, TLR4, NOX4, NOX2, ATG5 and LC3 proteins were determined by Western blot. The results showed that CA inhibited cardiac dysfunction, inflammatory infiltration and the levels of TNF-α, IL-1β and IL-6 in LPS stimulated rats by blocking the TLR4, NOX4, MAPK and autophagy signalings. In order to obtain further confirmation of the mechanism of CA on endotoxemia in vitro, a limited time-course study was firstly performed by Western blot. TLR4, NOX4 and LC3 were significantly increased after 4h LPS stimulation. CA reversed the intracellular ROS production and MAPK signaling activation induced by LPS. Electron microscopy, mRFP-GFP-LC3 transfection and western blot results revealed autophagic flux were attenuated after CA treatment. The siRNA and molecular docking results suggest that CA can suppress both TLR4 and NOX4 during endotoxemia. Our data revealed that CA ameliorated LPS-induced cardiac dysfunction by inhibiting ROS production and autophagy through TLR4-NOX4 pathway.
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Affiliation(s)
- Hang Zhao
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China; The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa Mountains, Xi'an 710032, China
| | - Meng Zhang
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China; The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa Mountains, Xi'an 710032, China
| | - Fuxing Zhou
- Department of Obstetrics and Gynecology, Xijing Hospital, The First Affiliated Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Wei Cao
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China; The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa Mountains, Xi'an 710032, China
| | - Linlin Bi
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China; The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa Mountains, Xi'an 710032, China
| | - Yanhua Xie
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China; The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa Mountains, Xi'an 710032, China
| | - Qian Yang
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China; The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa Mountains, Xi'an 710032, China.
| | - Siwang Wang
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China; The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa Mountains, Xi'an 710032, China.
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Inhibition of autophagy increased AGE/ROS-mediated apoptosis in mesangial cells. Cell Death Dis 2016; 7:e2445. [PMID: 27809300 PMCID: PMC5260901 DOI: 10.1038/cddis.2016.322] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Revised: 09/02/2016] [Accepted: 09/09/2016] [Indexed: 12/17/2022]
Abstract
The aim of our study was to investigate the role of autophagy, a homeostatic process involved in the lysosomal degradation of damaged cell organelles and proteins, in regulating the survival of mesangial cells treated with advanced glycation end products (AGEs). In the present study, AGEs induced mitochondrial depolarization and led to mitochondrial-dependent apoptosis in mesangial cells, as shown by the loss of the mitochondrial membrane potential; increased Bax processing; increased Caspase-9, Caspase-3 and PARP cleavage; and decreased Bcl-2 expression. Meanwhile, AGEs also triggered autophagy flux in mesangial cells, as confirmed by the presence of autophagic vesicles, the conversion of LC3II/LC3I and the increase/decrease in Beclin-1/p62 expression. Interestingly, this study reported apparent apoptosis and autophagy that were dependent on reactive oxygen species (ROS) production. Scavenging ROS with N-acetyl-l-cysteine could prevent the appearance of the autophagic features and reverse AGE-induced apoptosis. Moreover, AGE-triggered mitophagy, which was confirmed by the colocalization of autophagosomes and mitochondria and Parkin translocation to mitochondria, played a potential role in reducing ROS production in mesangial cells. Additionally, inhibition of autophagy significantly enhanced AGE-induced cell apoptosis. Taken together, our data suggest that ROS were the mediators of AGE-induced mesangial cell apoptosis and that autophagy was likely to be the mechanism that was triggered to repair the ROS-induced damage in the AGE-treated cells and thereby promote cell survival. This study provides new insights into the molecular mechanism of autophagy involved in AGE-induced apoptosis in mesangial cells.
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Hassanian SM, Ardeshirylajimi A, Dinarvand P, Rezaie AR. Inorganic polyphosphate promotes cyclin D1 synthesis through activation of mTOR/Wnt/β-catenin signaling in endothelial cells. J Thromb Haemost 2016; 14:2261-2273. [PMID: 27546592 PMCID: PMC5116009 DOI: 10.1111/jth.13477] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 08/09/2016] [Indexed: 02/04/2023]
Abstract
Essentials Polyphosphate (polyP) activates mTOR but its role in Wnt/β-catenin signaling is not known. PolyP-mediated cyclin D1 expression (β-catenin target gene) was monitored in endothelial cells. PolyP and boiled platelet-releasates induced the expression of cyclin D1 by similar mechanisms. PolyP establishes crosstalk between mTOR and Wnt/β-catenin signaling in endothelial cells. SUMMARY Background Inorganic polyphosphate (polyP) elicits intracellular signaling responses in endothelial cells through activation of mTOR complexes 1 and 2. Glycogen synthase kinase 3 (GSK-3) is known to be a negative regulator of mTOR and Wnt/β-catenin signaling pathways. Objective The objective of this study was to investigate the effect of polyP on the expression, degradation and subcellular localization of the Wnt/β-catenin target gene, cyclin D1, in endothelial cells. Methods Regulation of cyclin D1 expression, phosphorylation and subcellular localization by polyP or platelet releasates was monitored in the absence and presence of pharmacological inhibitors and/or siRNA for specific molecules of the upstream mTOR/Wnt/β-catenin signaling network by established methods. Results Both synthetic polyP and boiled-platelet releasates induced the phosphorylation-dependent inactivation of GSK-3, thereby increasing the expression and nuclear localization, but inhibiting the degradation of cyclin D1. Inhibitors of mTORC1 (PI3K, AKT, PLC, PKC), rapamycin and siRNA for raptor (mTORC1-specific component) and β-catenin, all inhibited polyP-mediated regulation of cyclin D1 expression, phosphorylation and subcellular localization in endothelial cells. The signaling effect of polyP was effectively inhibited by the recombinant extracellular domain of the receptor for advanced glycation end products (RAGE) and/or by the RAGE siRNA. Specific pharmacological inhibitors and siRNA knockdown of ERK1/2 and NF-κB pathways indicated that polyP-mediated cyclin D1 expression and nuclear localization are IKKɑ and ERK1/2 dependent, whereas its inhibitory effect on phosphorylation-dependent degradation of cyclin D1 is IKKβ-dependent. Conclusion We conclude that a RAGE-dependent polyP-mediated crosstalk between mTOR and the GSK-3/Wnt/β-catenin signaling network can modulate important physiological processes in endothelial cells.
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Affiliation(s)
- S M Hassanian
- Edward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, Saint Louis, MO, USA
| | - A Ardeshirylajimi
- Edward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, Saint Louis, MO, USA
| | - P Dinarvand
- Edward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, Saint Louis, MO, USA
| | - A R Rezaie
- Edward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, Saint Louis, MO, USA
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Sadowska-Bartosz I, Bartosz G. Effect of glycation inhibitors on aging and age-related diseases. Mech Ageing Dev 2016; 160:1-18. [PMID: 27671971 DOI: 10.1016/j.mad.2016.09.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 06/30/2016] [Accepted: 09/21/2016] [Indexed: 02/07/2023]
Abstract
Vast evidence supports the view that glycation of proteins is one of the main factors contributing to aging and is an important element of etiopathology of age-related diseases, especially type 2 diabetes mellitus, cataract and neurodegenerative diseases. Counteracting glycation can therefore be a means of increasing both the lifespan and healthspan. In this review, accumulation of glycation products during aging is presented, pathophysiological effects of glycation are discussed and ways of attenuation of the effects of glycation are described, concentrating on prevention of glycation. The effects of glycation and glycation inhibitors on the course of selected age-related diseases, such as Alzheimer's disease, Parkinson's disease and cataract are also reviewed.
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Affiliation(s)
- Izabela Sadowska-Bartosz
- Department of Biochemistry and Cell Biology, Faculty of Biology and Agriculture, University of Rzeszow, Zelwerowicza St. 4, 35-604 Rzeszów, Poland.
| | - Grzegorz Bartosz
- Department of Biochemistry and Cell Biology, Faculty of Biology and Agriculture, University of Rzeszow, Zelwerowicza St. 4, 35-604 Rzeszów, Poland; Department of Molecular Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland
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