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Sonmez MI, Shahzadi A, Kose C, Sonmez H, Ozyazgan S, Akkan AG. Effect of sulfasalazine on endothelium-dependent vascular response by the activation of Nrf2 signalling pathway. Front Pharmacol 2022; 13:979300. [PMID: 36353481 PMCID: PMC9639785 DOI: 10.3389/fphar.2022.979300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 09/29/2022] [Indexed: 11/23/2022] Open
Abstract
Background: Diabetes mellitus leads to endothelial dysfunction and accumulation of oxygen radicals. Sulfasalazine-induced Nrf2 activation reduces oxidative stress in vessels. Thus, in the present study, we investigated the effects of sulfasalazine on endothelial dysfunction induced by high glucose. We also ascribed the underlying mechanism involved in glucose-induced endothelial dysfunction. Methods: For this experiment we used 80 Wistar Albino rats thoracic aorta to calculate the dose response curve of noradrenaline and acetylcholine. Vessels were incubated in normal and high glucose for 2 h. To investigate glucose and sulfasalazine effects the vessels of the high glucose group were pre-treated with sulfasalazine (300 mM), JNK inhibitor (SP600125), and ERK inhibitor (U0126) for 30 min. The dose response curve was calculated through organ bath. The eNOS, TAS, TOS, and HO-1 levels were estimated by commercially available ELISA kits. Results: In the high glucose group, the Emax for contraction was significantly higher (p < 0.001), and Emax for relaxation was lower than that of control. These functional changes were parallel with the low levels of eNOS (p < 0.05). High glucose vessel treated with sulfasalazine showed low Emax value for contraction (p < 0.001) however, the Emax for relaxation was significantly high (p < 0.001) when compared to high glucose group. In the JNK group, Emax for contraction and relaxation was inhibited (p < 0.001) compared to sulfasalazine treated vessels. HO—1 enzyme levels were significantly low (p < 0.01) with sulfasalazine but higher with ERK inhibitor (p < 0.05). Conclusion: High glucose induced endothelial dysfunction and sulfasalazine reduced damage in high glucose vessels by activating eNOS, antioxidant effect through HO-1 enzymes and particularly inducing Nrf2 via the ERK and JNK pathways.
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Affiliation(s)
- Muhammed Ikbal Sonmez
- Institute of Experimental Pharmacology and Toxicology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Department of Medical Pharmacology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
- DZHK (German Center for Cardiovascular Research), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany
- *Correspondence: Muhammed Ikbal Sonmez,
| | - Andleeb Shahzadi
- Department of Medical Pharmacology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Cagla Kose
- Department of Medical Pharmacology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
- Department of Medical Pharmacology, Medical Faculty, Halic University, Istanbul, Turkey
| | - Haktan Sonmez
- Department of Medical Pharmacology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Sibel Ozyazgan
- Department of Medical Pharmacology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Ahmet Gokhan Akkan
- Department of Medical Pharmacology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
- Department of Medical Pharmacology, Medical Faculty, Bezmialem Vakif University Hospital, Istanbul, Turkey
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Influence of zinc levels and Nrf2 expression in the clinical and pathological changes in patients with diabetic nephropathy. Nutr Diabetes 2022; 12:37. [PMID: 35933424 PMCID: PMC9357008 DOI: 10.1038/s41387-022-00212-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 03/14/2022] [Accepted: 06/13/2022] [Indexed: 11/21/2022] Open
Abstract
Objective We investigated the correlation between zinc levels and Nrf2 expression and potential effects on the clinicopathology of patients with diabetic nephropathy (DN). Methods We selected 30 patients with DN, diagnosed via renal biopsy at our hospital from March 2018 to November 2019, and enrolled 30 healthy individuals from a medical examination center as the control group. Patients with DN were divided into normal-zinc and low-zinc groups. We detected the levels of zinc, copper, and Nrf2 mRNA in their serum, and collected the clinical and pathological data of DN patients. Results Serum zinc level and Nrf2 mRNA expression were significantly decreased in patients with DN compared to those of healthy people (P < 0.05). Of the 30 patients, 16 had low zinc (53.3%) and 14 had normal zinc levels (46.7%). There was no significant difference in the blood Nrf2 mRNA expression between the two groups (P > 0.05). However, the expression of Nrf2 in the kidney tissue of the low-zinc group was significantly lower compared to the normal-zinc group (P < 0.05). Diastolic blood pressure and copper levels were significantly higher in the low-zinc group (P < 0.05). In contrast, body mass index, red blood cell count, Hb level, and the ratio of zinc to copper were significantly lower in the low-zinc group (P < 0.05). The pathological classifications of the low-zinc group were more severe (P < 0.05). Conclusion Patients with DN were more likely to have zinc deficiency and lower expression of Nrf2. Additionally, DN patients with zinc deficiency were prone to have more severe clinical and pathological manifestations.
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Tamura Y. The Role of Zinc Homeostasis in the Prevention of Diabetes Mellitus and Cardiovascular Diseases. J Atheroscler Thromb 2021; 28:1109-1122. [PMID: 34148917 PMCID: PMC8592709 DOI: 10.5551/jat.rv17057] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 05/25/2021] [Indexed: 11/30/2022] Open
Abstract
Zinc is an essential micronutrient for human health and is involved in various biological functions, such as growth, metabolism, and immune function. In recent years, research on intracellular zinc dynamics has progressed, and it has become clear that zinc transporters strictly control intracellular zinc localization, zinc regulates the functions of various proteins and signal transduction pathways as a second messenger similar to calcium ions, and intracellular zinc dyshomeostasis is associated with impaired insulin synthesis, secretion, sensitivity, lipid metabolism, and vascular function. Numerous animal and human studies have shown that zinc deficiency may be associated with the risk factors for diabetes and cardiovascular diseases (CVDs) and zinc administration might be beneficial for the prevention and treatment of these diseases. Therefore, an understanding of zinc biology may help the establishment of novel strategies for the prevention and treatment of diabetes and CVDs. This review will summarize the current knowledge on the role of zinc homeostasis in the pathogenesis of diabetes and atherosclerosis and will discuss the potential of zinc in the prevention of these diseases.
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Affiliation(s)
- Yukinori Tamura
- Division of Physiology and Biochemistry, Faculty of Nutrition, Kobe Gakuin University, Kobe, Japan
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4
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Abstract
Evidence for the importance of zinc for all immune cells and for mounting an efficient and balanced immune response to various environmental stressors has been accumulating in recent years. This article describes the role of zinc in fundamental biological processes and summarizes our current knowledge of zinc's effect on hematopoiesis, including differentiation into immune cell subtypes. In addition, the important role of zinc during activation and function of immune cells is detailed and associated with the specific immune responses to bacteria, parasites, and viruses. The association of zinc with autoimmune reactions and cancers as diseases with increased or decreased immune responses is also discussed. This article provides a broad overview of the manifold roles that zinc, or its deficiency, plays in physiology and during various diseases. Consequently, we discuss why zinc supplementation should be considered, especially for people at risk of deficiency. Expected final online publication date for the Annual Review of Nutrition, Volume 41 is September 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Inga Wessels
- Institute of Immunology, Faculty of Medicine, RWTH Aachen University, 52074 Aachen, Germany;
| | | | - Lothar Rink
- Institute of Immunology, Faculty of Medicine, RWTH Aachen University, 52074 Aachen, Germany;
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5
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Kooshki F, Tutunchi H, Vajdi M, Karimi A, Niazkar HR, Shoorei H, Pourghassem Gargari B. A Comprehensive insight into the effect of chromium supplementation on oxidative stress indices in diabetes mellitus: A systematic review. Clin Exp Pharmacol Physiol 2021; 48:291-309. [PMID: 33462845 DOI: 10.1111/1440-1681.13462] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 04/16/2020] [Accepted: 12/24/2020] [Indexed: 02/06/2023]
Abstract
Diabetes mellitus is a metabolic disorder defined as an increase in blood glucose levels (hyperglycaemia) and insufficient production or action of insulin produced by the pancreas. Chronic hyperglycaemia leads to increased reactive oxygen species (ROS) production and oxidative stress, which consequently results in insulin resistance, beta cell degeneration, dyslipidaemia, and glucose intolerance in diabetic patients. Chromium has an essential role in the metabolism of proteins, lipids, and carbohydrates through increasing insulin efficiency. This systematic review aimed to evaluate chromium supplementation's potential roles in oxidative stress indices in diabetes mellitus. A systematic search was performed in PubMed, Scopus, Google Scholar, Cochrane, and Science Direct databases until November 2020. All clinical trials and animal studies that assessed chromium's effect on oxidative stress indices in diabetes mellitus and were published in English-language journals were included. Finally, only 33 out of 633 articles met the required criteria for further analysis. Among 33 papers, 25 studies were performed on animals, and eight investigations were conducted on humans. Twenty-eight studies of chromium supplementation lead to reducing oxidative stress indices. Also, 23 studies showed that chromium supplementation markedly increased antioxidant enzymes' activity and improved levels of antioxidant indices. In conclusion, chromium supplementation decreased oxidative stress in diabetes mellitus. However, further clinical trials are suggested in a bid to determine the exact mechanisms.
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Affiliation(s)
- Fateme Kooshki
- Student Research Committee, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Clinical Nutrition, Faculty of Nutrition and Food Science, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Helda Tutunchi
- Nutrition Research Center, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahdi Vajdi
- Student Research Committee, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Clinical Nutrition, Faculty of Nutrition and Food Science, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Arash Karimi
- Student Research Committee, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Clinical Nutrition, Faculty of Nutrition and Food Science, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hamid Reza Niazkar
- Student Research Committee, Gonabad University of Medical Sciences, Gonabad, Iran
| | - Hamed Shoorei
- Department of Anatomical Sciences, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Bahram Pourghassem Gargari
- Nutrition Research Center, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
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Gao P, Tian Y, Xie Q, Zhang L, Yan Y, Xu D. Manganese exposure induces permeability in renal glomerular endothelial cells via the Smad2/3-Snail-VE-cadherin axis. Toxicol Res (Camb) 2020; 9:683-692. [PMID: 33178429 DOI: 10.1093/toxres/tfaa067] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 07/19/2020] [Accepted: 08/03/2020] [Indexed: 12/22/2022] Open
Abstract
Manganese (Mn) is an essential micronutrient. However, it is well established that Mn overexposure causes nervous system diseases. In contrast, there are few reports on the effects of Mn exposure on glomerular endothelium. In the present study, the potential effects of Mn exposure on glomerular endothelium were evaluated. Sprague Dawley rats were used as a model of Mn overexposure by intraperitoneal injection of MnCl2·H2O at 25 mg/kg body weight. Mn exposure decreased expression of vascular endothelial-cadherin, a key component of adherens junctions, and increased exudate from glomeruli in Sprague Dawley rats. Human renal glomerular endothelial cells were cultured with different concentration of Mn. Exposure to 0.2 mM Mn increased permeability of human renal glomerular endothelial cell monolayers and decreased vascular endothelial-cadherin expression without inducing cytotoxicity. In addition, Mn exposure increased phosphorylation of mothers against decapentaplegic homolog 2/3 and upregulated expression of zinc finger protein SNAI1, a negative transcriptional regulator of vascular endothelial-cadherin. Our data suggest Mn exposure may contribute to development of glomerular diseases by inducing permeability of glomerular endothelium.
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Affiliation(s)
- Peng Gao
- Laboratory of Microvascular Medicine, Medical Research Center, Shandong Provincial Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, 16766 Jingshi Road, Jinan 250014, Shandong, China
| | - Yutian Tian
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, 18877 Jingshi Road, Jinan 250062, Shandong, China
| | - Qi Xie
- Laboratory of Microvascular Medicine, Medical Research Center, Shandong Provincial Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, 16766 Jingshi Road, Jinan 250014, Shandong, China
| | - Liang Zhang
- College of Life Sciences, Shandong Provincial Key Laboratory of Animal Resistance Biology, Institute of Biomedical Sciences, Shandong Normal University, 88 East Wenhua Road, Jinan 250014, Shandong, China
| | - Yongjian Yan
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, 18877 Jingshi Road, Jinan 250062, Shandong, China
| | - Dongmei Xu
- Department of Nephrology, Shandong Provincial Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, 16766 Jingshi Road, Jinan 250014, Shandong, China
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7
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Lawes M, Pinkas A, Frohlich BA, Iroegbu JD, Ijomone OM, Aschner M. Metal-induced neurotoxicity in a RAGE-expressing C. elegans model. Neurotoxicology 2020; 80:71-75. [PMID: 32621835 DOI: 10.1016/j.neuro.2020.06.013] [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: 04/12/2020] [Revised: 06/17/2020] [Accepted: 06/30/2020] [Indexed: 10/23/2022]
Abstract
Environmental and occupational metal exposure poses serious global concerns. Metal exposure have severally been associated with neurotoxicity and brain damage. Furthermore, receptor for advanced glycation end products (RAGE) is also implicated in neurological disorders, particularly those with altered glucose metabolism. Here, we examine potential compounding effect of metal exposure and RAGE expression on dopamine (DA) and serotonin (SER) neurons in C. elegans. In addition, we evaluate the effect of RAGE expression on DA and SER neurons in hyperglycemic conditions. Newly generated RAGE-expressing C. elegans tagged with green fluorescent proteins (GFP) in DAergic and SERergic neurons were treated with cadmium (Cd) or manganese (Mn). Additionally, the RAGE-expressing worms were also exposed to high glucose conditions. Results showed metals induced neurodegeneration both in the presence and absence of RAGE expression, but the manner of degeneration differed between Cd and Mn treated nematodes. Furthermore, RAGE-expressing worms showed significant neurodegeneration in both DAergic and SERergic neurons. Our results indicate co-occurrence of metal exposure and RAGE expression can induce neurodegeneration. Additionally, we show that RAGE expression can exacerbate hyperglycemic induced neurodegeneration.
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Affiliation(s)
- Michael Lawes
- Departments of Molecular Pharmacology and Neurosciences, Albert Einstein College of Medicine, NY, USA
| | - Adi Pinkas
- Departments of Molecular Pharmacology and Neurosciences, Albert Einstein College of Medicine, NY, USA
| | - Bailey A Frohlich
- Departments of Molecular Pharmacology and Neurosciences, Albert Einstein College of Medicine, NY, USA
| | - Joy D Iroegbu
- The Neuro- Lab, School of Health and Health Technology, Federal University of Technology, Akure, Nigeria
| | - Omamuyovwi M Ijomone
- The Neuro- Lab, School of Health and Health Technology, Federal University of Technology, Akure, Nigeria
| | - Michael Aschner
- Departments of Molecular Pharmacology and Neurosciences, Albert Einstein College of Medicine, NY, USA.
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8
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Agonism of GPR39 displays protective effects against advanced glycation end-product (AGE)-induced degradation of extracellular matrix in human SW1353 cells. Arch Biochem Biophys 2019; 677:108164. [PMID: 31678046 DOI: 10.1016/j.abb.2019.108164] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 09/26/2019] [Accepted: 10/29/2019] [Indexed: 12/14/2022]
Abstract
Excessive degradation of the cartilage articular extracellular matrix (ECM) in chondrocytes has been considered as an important pathological characteristics of OA. In the present study, we demonstrate that the G protein-coupled receptor GPR39 is expressed on SW1353 chondrocytes and is significantly downregulated in response to advanced glycation end products (AGEs). Our findings show that agonism of GPR39 exerts significant protective effects against AGE-induced degradation of articular extracellular matrix. Agonism of GPR39 rescued degradation of type II collagen by decreasing expression of the collagen-degrading enzymes matrix metalloproteinase (MMP)-3 and MMP-13. Additionally, agonism of GPR39 rescued AGE-induced suppression of tissue inhibitor of metalloproteinase (TIMP)-1 and TIMP-2. Agonism of GPR39 prevented degradation of aggrecan by downregulating AGE-induced expression of a disintegrin and metalloproteinase with type I thrombospondin motif (ADAMTS)-4 and ADAMTS-5. Finally, we demonstrate that the effects of GPR39 are mediated through the p38 mitogen activated protein kinase (MAPK)/nuclear factor-κB (NF-κB) cellular signaling pathway. Taken together, our findings show for the first time that targeted therapies involving GPR39 may provide a novel approach for the prevention and treatment of osteoarthritis.
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9
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C. elegans-An Emerging Model to Study Metal-Induced RAGE-Related Pathologies. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:ijerph15071407. [PMID: 29973513 PMCID: PMC6069300 DOI: 10.3390/ijerph15071407] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 06/29/2018] [Accepted: 07/03/2018] [Indexed: 12/29/2022]
Abstract
The receptor for advanced glycation end products (RAGE), a multi-ligand receptor, is mostly associated with promoting inflammation and oxidative stress. In addition to advanced glycation end products (AGEs), its ligands include High mobility group box 1 protein (HMGB-1), S-100 proteins and beta-sheet fibrils. The effects of several metals and metalloids on RAGE expression and activation have been recently studied: in vivo and in vitro exposure to methylmercury, selenium, zinc, manganese, and arsenic was associated with a variety of RAGE-related alterations and behavioral impairments, which are mostly dependent upon the administration procedure (local vs. systemic) and age during exposure. Recently, C. elegans has been proposed as a potential novel model for studying RAGE-related pathologies; preliminary data regarding such model and its potential contribution to the study of metal-induced RAGE-related pathologies are discussed.
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10
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Kheirouri S, Alizadeh M, Maleki V. Zinc against advanced glycation end products. Clin Exp Pharmacol Physiol 2018; 45:491-498. [DOI: 10.1111/1440-1681.12904] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 11/08/2017] [Accepted: 11/20/2017] [Indexed: 12/20/2022]
Affiliation(s)
- Sorayya Kheirouri
- Department of Nutrition; Tabriz University of Medical Sciences; Tabriz Iran
| | - Mohammad Alizadeh
- Department of Nutrition; Tabriz University of Medical Sciences; Tabriz Iran
| | - Vahid Maleki
- Department of Nutrition; Tabriz University of Medical Sciences; Tabriz Iran
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11
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Influence of high glucose and AGE environment on the proliferation, apoptosis, paracrine effects, and cytokine expression of human adipose stem cells in vitro. Int J Diabetes Dev Ctries 2017. [DOI: 10.1007/s13410-017-0574-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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12
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Giacconi R, Cai L, Costarelli L, Cardelli M, Malavolta M, Piacenza F, Provinciali M. Implications of impaired zinc homeostasis in diabetic cardiomyopathy and nephropathy. Biofactors 2017; 43:770-784. [PMID: 28845600 DOI: 10.1002/biof.1386] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 07/12/2017] [Accepted: 07/27/2017] [Indexed: 12/18/2022]
Abstract
Impaired zinc homeostasis is observed in diabetes mellitus (DM2) and its complications. Zinc has a specific role in pancreatic β-cells via insulin synthesis, storage, and secretion. Intracellular zinc homeostasis is tightly controlled by zinc transporters (ZnT and Zip families) and metallothioneins (MT) which modulate the uptake, storage, and distribution of zinc. Several investigations in animal models demonstrate the protective role of MT in DM2 and its cardiovascular or renal complications, while a copious literature shows that a common polymorphism (R325W) in ZnT8, which affects the protein's zinc transport activity, is associated with increased DM2 risk. Emerging studies highlight a role of other zinc transporters in β-cell function, suggesting that targeting them could make a possible contribution in managing the hyperglycemia in diabetic patients. This article summarizes the current findings concerning the role of zinc homeostasis in DM2 pathogenesis and development of diabetic cardiomyopathy and nephropathy and suggests novel therapeutic targets. © 2017 BioFactors, 43(6):770-784, 2017.
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Affiliation(s)
- Robertina Giacconi
- Translational Research Center of Nutrition and Ageing, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Lu Cai
- Pediatric Research Institute at the Department of Pediatrics, Wendy L. Novak Diabetes Care Center, University of Louisville, Louisville, KY, USA
| | - Laura Costarelli
- Translational Research Center of Nutrition and Ageing, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Maurizio Cardelli
- Advanced Technology Center for Aging Research, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Marco Malavolta
- Translational Research Center of Nutrition and Ageing, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Francesco Piacenza
- Translational Research Center of Nutrition and Ageing, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Mauro Provinciali
- Advanced Technology Center for Aging Research, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
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Liu F, Zhang X, Li Y, Chen Q, Liu F, Zhu X, Mei L, Song X, Liu X, Song Z, Zhang J, Zhang W, Ling P, Wang F. Anti-Inflammatory Effects of a Mytilus coruscus α-d-Glucan (MP-A) in Activated Macrophage Cells via TLR4/NF-κB/MAPK Pathway Inhibition. Mar Drugs 2017; 15:md15090294. [PMID: 28930149 PMCID: PMC5618433 DOI: 10.3390/md15090294] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 09/03/2017] [Accepted: 09/15/2017] [Indexed: 12/17/2022] Open
Abstract
The hard-shelled mussel (Mytilus coruscus) has been used as Chinese traditional medicine for thousands of years; however, to date the ingredients responsible for the various beneficial health outcomes attributed to Mytilus coruscus are still unclear. An α-d-Glucan, called MP-A, was isolated from Mytilus coruscus, and observed to exert anti-inflammatory activity in THP-1 human macrophage cells. Specifically, we showed that MP-A treatment inhibited the production of inflammatory markers, including TNF-α, NO, and PGE2, inducible NOS (iNOS), and cyclooxygenase-2 (COX-2), in LPS-activated THP-1 cells. It was also shown to enhance phagocytosis in the analyzed cells, but to severely inhibit the phosphorylation of mitogen-activated protein kinases (MAPKs) and the nuclear translocation of NF-κB P65. Finally, MP-A was found to exhibit a high binding affinity for the cell surface receptor TLR4, but a low affinity for TLR2 and dectin-1, via surface plasmon resonance (SPR) analysis. The study indicates that MP-A suppresses LPS-induced TNF-α, NO and PEG2 production via TLR4/NF-κB/MAPK pathway inhibition, and suggests that MP-A may be a promising therapeutic candidate for diseases associated with TNF-α, NO, and/or PEG2 overproduction.
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Affiliation(s)
- Fuyan Liu
- Shandong Academy of Pharmaceutical Science, Jinan 250101, China.
- School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China.
| | - Xiaofeng Zhang
- School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Yuqiu Li
- Shandong University of Traditional Chinese Medicine, Jinan 250355, China.
| | - Qixin Chen
- Shandong Academy of Pharmaceutical Science, Jinan 250101, China.
- School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China.
| | - Fei Liu
- Shandong Academy of Pharmaceutical Science, Jinan 250101, China.
- School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China.
| | - Xiqiang Zhu
- Shandong Academy of Pharmaceutical Science, Jinan 250101, China.
| | - Li Mei
- Shandong Academy of Pharmaceutical Science, Jinan 250101, China.
- School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China.
| | - Xinlei Song
- School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China.
| | - Xia Liu
- Shandong Academy of Pharmaceutical Science, Jinan 250101, China.
| | - Zhigang Song
- Shandong Academy of Pharmaceutical Science, Jinan 250101, China.
- School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China.
| | - Jinhua Zhang
- Shandong Academy of Pharmaceutical Science, Jinan 250101, China.
| | - Wen Zhang
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
| | - Peixue Ling
- Shandong Academy of Pharmaceutical Science, Jinan 250101, China. or
- School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China. or
| | - Fengshan Wang
- School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China.
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14
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Ren X, Ren L, Wei Q, Shao H, Chen L, Liu N. Advanced glycation end-products decreases expression of endothelial nitric oxide synthase through oxidative stress in human coronary artery endothelial cells. Cardiovasc Diabetol 2017; 16:52. [PMID: 28427390 PMCID: PMC5397770 DOI: 10.1186/s12933-017-0531-9] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 04/04/2017] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Advanced glycation end-products (AGEs) are elevated under diabetic conditions and associated with insulin resistance, endothelial dysfunction and vascular inflammation in humans. It has been demonstrated that AGEs evoke oxidative and inflammatory reactions in endothelial cells through the interaction with a receptor for AGEs (RAGE). Here, we aimed to identify the cellular mechanisms by which AGEs exacerbate the endothelial dysfunction in human coronary artery endothelial cells (HCAECs). METHODS 30 type 2 diabetic patients with or without coronary artery atherosclerosis were recruited for this study. Plasma levels of AGE peptides (AGE-p) were analyzed using flow injection assay. Endothelial function was tested by brachial artery flow-mediated vasodilatation (FMD). Further investigations were performed to determine the effects and mechanisms of AGEs on endothelial dysfunction in HCAECs. RESULTS AGE-p was inversely associated with FMD in diabetic patients with coronary artery atherosclerosis in our study. After treated with AGEs, HCAECs showed significant reductions of eNOS mRNA and protein levels including eNOS and phospho-eNOS Ser1177, eNOS mRNA stability, eNOS enzyme activity, and cellular nitric oxide (NO) levels, whereas superoxide anion production was significantly increased. In addition, AGEs significantly decreased mitochondrial membrane potential, ATP content and catalase and superoxyde dismutase (SOD) activities, whereas it increased NADPH oxidase activity. Treatment of the cells with antioxidants SeMet, SOD mimetic MnTBAP and mitochondrial inhibitor thenoyltrifluoroacetone (TTFA) effectively blocked these effects induced by AGEs. AGEs also increased phosphorylation of the mitogen-activated protein kinases p38 and ERK1/2, whereas the specific inhibitors of p38, ERK1/2, and TTFA effectively blocked AGEs-induced reactive oxygen species production and eNOS downregulation. CONCLUSIONS AGEs cause endothelial dysfunction by a mechanism associated with decreased eNOS expression and increased oxidative stress in HCAECs through activation of p38 and ERK1/2.
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Affiliation(s)
- Xiaomei Ren
- Department of Geriatrics, Zhongda Hospital, School of Medicine, Southeast University, No. 87, Dingjiaqiao Road, Nanjing, 210009, China
| | - Liqun Ren
- Department of Geriatrics, Zhongda Hospital, School of Medicine, Southeast University, No. 87, Dingjiaqiao Road, Nanjing, 210009, China
| | - Qin Wei
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University, No. 87, Dingjiaqiao Road, Nanjing, 210009, China.
| | - Hua Shao
- Department of Pharmacy, Zhongda Hospital, Southeast University, No. 87, Dingjiaqiao Road, Nanjing, 210009, China
| | - Long Chen
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University, No. 87, Dingjiaqiao Road, Nanjing, 210009, China
| | - Naifeng Liu
- School of Medicine, Southeast University, No. 87, Dingjiaqiao Road, Nanjing, 210009, China
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15
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Gong JH, Dong JY, Xie T, Lu SL. The Influence of AGEs Environment on Proliferation, Apoptosis, Homeostasis, and Endothelial Cell Differentiation of Human Adipose Stem Cells. INT J LOW EXTR WOUND 2017; 16:94-103. [PMID: 28682730 DOI: 10.1177/1534734617701575] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The aim of this study was to evaluate the changes of proliferation, apoptosis, homeostasis, and differentiation of human adipose-derived stem cells (hASCs) in the simulated diabetic microenvironment and discuss the potential of the mesenchymal stem cell in the treatment of chronic diabetic wound. We simulated diabetic microenvironment with glycation end products (AGEs) in vitro and studied the changes of hASCs in proliferation and apoptosis. We found that AGEs inhibited the proliferation and lead to hASCs apoptosis, and the endothelial cell directed differentiation was also inhibited. AGEs upregulated growth-related oncogene and monocyte chemoattractant protein-1 and downregulated urokinase-type plasminogen activator receptor, which may inhibit the proliferation and transference of endothelial cells. The simulated diabetic microenvironment affects the proliferation, apoptosis, and homeostasis of hASCs, the endothelial cell migration, and the synthesis of collagen protein, leading to delayed wound healing.
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Affiliation(s)
- Jia-Hong Gong
- Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jiao-Yun Dong
- Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ting Xie
- Shanghai 9th People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shu-Liang Lu
- Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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16
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Xie Y, Yu D, Wu J, Li L. Protective effects of physiological testosterone on advanced glycation end product‑induced injury in human endothelial cells. Mol Med Rep 2017; 15:1165-1171. [PMID: 28112379 PMCID: PMC5367347 DOI: 10.3892/mmr.2017.6130] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 08/08/2016] [Indexed: 01/09/2023] Open
Abstract
The effect of testosterone, a sex steroid, on endothelial cells is controversial as it is uncertain if it has a protective effect on them. Whether physiological testosterone can inhibit the deleterious effects of advanced glycation end products (AGEs) on endothelial cells remains to be elucidated. The present study focused on elucidating the effect of testosterone on the injury of endothelial cells induced by AGEs. Human umbilical vein endothelial cells (HUVECs) were cultured in vitro and treated with AGEs in the presence or absence of various concentrations of testosterone. The cell viability in each group was measured using an MTS assay. Early-stage apoptosis was detected using flow cytometry with Annexin V-fluorescein isothiocyanate/propidium iodide double staining, and the expression levels of apoptosis-associated proteins, B cell lymphoma-2 (Bcl-2), Bcl-2-associated X protein (Bax) and caspase-3, were determined using western blot analysis. Oxidative stress and pro-inflammatory parameters in the medium were evaluated using an enzyme-linked immunosorbent assay. The MTS results showed that AGEs significantly decreased the proliferation of HUVECs, whereas a physiological concentration of testosterone alleviated this damage. Physiological concentrations of testosterone protected the HUVECs from AGE-induced apoptosis, mediated by caspase-3 and Bax/Bcl-2. In addition, treatment of the HUVECs with AGEs caused a significant decrease in anti-oxidative parameters, but increased the concentrations of malondialdehyde and tumor necrosis factor-α. The activation of Janus kinase 2 and signal transducer and activator of transcription 3 was significantly increased by incubation with AGEs. However, pre-incubation with a physiological concentration of testosterone attenuated these changes. Therefore, the data obtained in the present study established the potential role of physiological testosterone in ameliorating AGE-induced damage in HUVECs.
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Affiliation(s)
- Yaping Xie
- Department of Hematology, Hangzhou No. 1 People's Hospital, Hangzhou, Zhejiang 310016, P.R. China
| | - Dan Yu
- Department of Endocrinology, The Affiliated Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, P.R. China
| | - Jiahua Wu
- Department of Endocrinology, The Affiliated Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, P.R. China
| | - Lin Li
- Department of Endocrinology, The Affiliated Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, P.R. China
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17
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Yu D, Yu SJ. Effects of some cations on the formation of 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) in a model system. Food Chem 2016; 201:46-51. [DOI: 10.1016/j.foodchem.2016.01.066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 01/14/2016] [Accepted: 01/16/2016] [Indexed: 10/22/2022]
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18
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Xiong M, Liu L, Liu Z, Gao H. Inhibitory effect of zinc on the advanced glycation end product-induced apoptosis of mouse osteoblastic cells. Mol Med Rep 2015; 12:5286-92. [PMID: 26239716 DOI: 10.3892/mmr.2015.4088] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Accepted: 06/05/2015] [Indexed: 11/05/2022] Open
Abstract
Osteoporosis and diabetes have become serious health problems worldwide. Previous studies have suggested that diabetes is associated with osteoporosis and increased fracture risk. However, the mechanism underlying diabetes‑induced osteoporosis remains to be elucidated. Therefore, the present study aimed to examine the mechanism underlying diabetes‑induced osteoporosis, and determine the protective effects of zinc, which is known to be closely associated with osteoporosis and diabetes. The results of the present study demonstrated that zinc inhibited advanced glycation end product (AGE)‑induced MC3T3‑E1 cell apoptosis by attenuating the production of reactive oxygen species, inhibiting caspase‑3 and caspase‑9 activation, and inhibiting the release of cytochrome c from between the mitochondria and the cytosol. Furthermore, zinc was found to protect cells against AGE‑induced apoptosis via the mitogen‑activated protein kinase/extracellular signal‑regulated kinase and phosphoinositide 3‑kinase/AKT signaling pathways. In conclusion, these findings enable a better understanding of the mechanism underlying diabetes‑induced osteoporosis, and may indicate a novel target for its prevention and treatment.
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Affiliation(s)
- Mingyue Xiong
- Department of Traumatic Surgery, Xinqu Hospital, The First Affiliated Hospital of Henan University of Science Technology, Luoyang, Henan 471000, P.R. China
| | - Liqiang Liu
- Department of Traumatic Surgery, Xinqu Hospital, The First Affiliated Hospital of Henan University of Science Technology, Luoyang, Henan 471000, P.R. China
| | - Zhenhui Liu
- Department of Traumatic Surgery, Xinqu Hospital, The First Affiliated Hospital of Henan University of Science Technology, Luoyang, Henan 471000, P.R. China
| | - Hangfei Gao
- Department of Traumatic Surgery, Xinqu Hospital, The First Affiliated Hospital of Henan University of Science Technology, Luoyang, Henan 471000, P.R. China
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Brühlmann D, Jordan M, Hemberger J, Sauer M, Stettler M, Broly H. Tailoring recombinant protein quality by rational media design. Biotechnol Prog 2015; 31:615-29. [DOI: 10.1002/btpr.2089] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 03/04/2015] [Indexed: 02/07/2023]
Affiliation(s)
- David Brühlmann
- Merck Serono SA, Corsier-sur-Vevey, Biotech Process Sciences, Zone Industrielle B; CH-1809 Fenil-sur-Corsier Switzerland
- Dept. of Biotechnology and Biophysics; Julius-Maximilians-Universität Würzburg, Biozentrum; Am Hubland DE-97074 Würzburg Germany
| | - Martin Jordan
- Merck Serono SA, Corsier-sur-Vevey, Biotech Process Sciences, Zone Industrielle B; CH-1809 Fenil-sur-Corsier Switzerland
| | - Jürgen Hemberger
- Inst. for Biochemical Engineering and Analytics; University of Applied Sciences Giessen; Wiesenstrasse 14, DE-35390 Giessen Germany
| | - Markus Sauer
- Dept. of Biotechnology and Biophysics; Julius-Maximilians-Universität Würzburg, Biozentrum; Am Hubland DE-97074 Würzburg Germany
| | - Matthieu Stettler
- Merck Serono SA, Corsier-sur-Vevey, Biotech Process Sciences, Zone Industrielle B; CH-1809 Fenil-sur-Corsier Switzerland
| | - Hervé Broly
- Merck Serono SA, Corsier-sur-Vevey, Biotech Process Sciences, Zone Industrielle B; CH-1809 Fenil-sur-Corsier Switzerland
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20
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Giacconi R, Simm A, Santos AN, Costarelli L, Malavolta M, Mecocci P, Piacenza F, Basso A, Fulop T, Rink L, Dedoussis G, Kanoni S, Herbein G, Jajte J, Mocchegiani E. Influence of +1245 A/G MT1A polymorphism on advanced glycation end-products (AGEs) in elderly: effect of zinc supplementation. GENES AND NUTRITION 2014; 9:426. [PMID: 25149676 DOI: 10.1007/s12263-014-0426-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 08/09/2014] [Indexed: 11/25/2022]
Abstract
Advanced glycation end-products (AGEs) stimulate reactive oxygen species (ROS) generation and represent a risk factor for atherosclerosis, while their formation seems to be prevented by zinc. Metallothioneins (MT), zinc-binding proteins exert an antioxidant function by regulating intracellular zinc availability and protecting cells from ROS damages. +1245 A/G MT1A polymorphism was implicated in type 2 diabetes and in cardiovascular disease development as well as in the modulation of antioxidant response. The purpose of this study was to investigate the influence of +1245 A/G MT1A polymorphism on AGEs and ROS production and to verify the effect of zinc supplementation on plasma AGEs, zinc status parameters and antioxidant enzyme activity in relation to this SNP. One hundred and ten healthy subjects (72 ± 6 years) from the ZincAge study were supplied with zinc aspartate (10 mg/day for 7 weeks) and screened for +1245 MT1A polymorphism. +1245 MT1A G+ (Arginine) genotype showed higher plasma AGEs and ROS production in peripheral blood mononuclear cells (PBMCs) than G- (Lysine) one at the baseline. No significant changes after zinc supplementation were observed for AGEs, ROS and MT levels as well as for enzyme antioxidant activity in relation to the genotype. Among zinc status parameters, major increases were observed for the intracellular labile zinc (iZnL) and the NO-induced release of zinc in PBMCs, in G+ genotype as compared to G- one. In summary, +1245 G+ carriers showed increased plasma AGEs and ROS production in PBMCs at baseline and a higher improvement in iZnL after zinc intervention with respect to G- individuals.
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Affiliation(s)
- Robertina Giacconi
- Translation Research Center of Nutrition and Ageing, Italian National Research Centre on Aging (INRCA-IRCCS), Via Birarelli 8, 60121, Ancona, Italy,
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21
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Sang HQ, Gu JF, Yuan JR, Zhang MH, Jia XB, Feng L. The protective effect of Smilax glabra extract on advanced glycation end products-induced endothelial dysfunction in HUVECs via RAGE-ERK1/2-NF-κB pathway. JOURNAL OF ETHNOPHARMACOLOGY 2014; 155:785-795. [PMID: 24953033 DOI: 10.1016/j.jep.2014.06.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2014] [Revised: 06/07/2014] [Accepted: 06/10/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Smilax glabra Roxb. (SGR) is a traditional Chinese herb that has been used in folk for the treatment of diabetic vascular complications. Advanced glycation end products (AGEs)-induced endothelial dysfunction has been thought to be a major cause of diabetic vascular complications. The present study was conducted to investigate the protective effect of SGR extract on AGEs-induced endothelial dysfunction and its underlying mechanisms. MATERIALS AND METHODS Human umbilical vein endothelial cells (HUVECs) were exposed to 200 μg/ml AGEs to induce endothelial dysfunction. Acridine orange/ethidium bromide (AO/EB) fluorescence assay and Annexin-V/PI double-staining were performed to determine endothelium apoptosis. Dihydroethidium (DHE) fluorescence probe, SOD and MDA kits were used to evaluate oxidative stress. The effect of SGR extract on AGEs-induced TGF-beta1 expression was determined by immunocytochemistry and western blotting. Attenuations of SGR extract on receptor for AGEs (RAGE) expression, extracellular regulated protein kinases (ERK1/2) activation and NF-κB phosphorylation were determined by immunofluorescence assay and western blotting. The blockade assays for RAGE and ERK1/2 were carried out using a specific RAGE-antibody (RAGE-Ab) or a selective ERK1/2 inhibitor PD98059 in immunofluorescence assay. RESULTS The pretreatment of SGR extract (0.125, 0.25 and 0.5 mg crude drug/ml) significantly attenuated AGEs-induced endothelium apoptosis, and down-regulated TGF-beta1 protein expression in HUVECs. It was also well shown that SGR extract could down-regulate dose-dependently ROS over-generation, MDA content, TGF-beta1 expression, ERK1/2 and NF-κB activation whereas increase significantly SOD activity. Furthermore, the AGEs-induced ERK1/2 activation could be attenuated by the blockade of RAGE-Ab (5 μg/ml) while the NF-κB activation was ameliorated by ERK1/2 inhibitor PD98059 (10 μM). CONCLUSION These results indicated that SGR extract could attenuate AGEs-induced endothelial dysfunction via RAGE-ERK1/2-NF-κB pathways. Our findings suggest that SGR extract may be beneficial for attenuating endothelial dysfunction in diabetic vascular complications.
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Affiliation(s)
- Hai-qiang Sang
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Henan, Zhengzhou 450052, PR China.
| | - Jun-fei Gu
- Key Laboratory of Delivery Systems of Chinese Meteria Medica, Jiangsu Provincial Academy of Chinese Medicine, Jiangsu, Nanjing 210028, PR China; College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Jia-rui Yuan
- Key Laboratory of Delivery Systems of Chinese Meteria Medica, Jiangsu Provincial Academy of Chinese Medicine, Jiangsu, Nanjing 210028, PR China; College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Ming-hua Zhang
- Key Laboratory of Delivery Systems of Chinese Meteria Medica, Jiangsu Provincial Academy of Chinese Medicine, Jiangsu, Nanjing 210028, PR China
| | - Xiao-bin Jia
- Key Laboratory of Delivery Systems of Chinese Meteria Medica, Jiangsu Provincial Academy of Chinese Medicine, Jiangsu, Nanjing 210028, PR China
| | - Liang Feng
- Key Laboratory of Delivery Systems of Chinese Meteria Medica, Jiangsu Provincial Academy of Chinese Medicine, Jiangsu, Nanjing 210028, PR China.
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McCracken NA, Kowle R, Ouyang A. Control of galactosylated glycoforms distribution in cell culture system. Biotechnol Prog 2014; 30:547-53. [PMID: 24692242 DOI: 10.1002/btpr.1906] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Revised: 03/20/2014] [Indexed: 11/06/2022]
Abstract
Cell culture process conditions including media components and bioreactor operation conditions have a profound impact on recombinant protein quality attributes. Considerable changes in the distribution of galactosylated glycoforms (G0F, G1F, and G2F) were observed across multiple CHO derived recombinant proteins in development at Eli Lilly and Company when switching to a new chemically defined (CD) media platform condition. In the new CD platform, significantly lower G0F percentages and higher G1F and G2F were observed. These changes were of interest as glycosylation heterogeneity can impact the effectiveness of a protein. A systematic investigation was done to understand the root cause of the change and control strategy for galactosylated glycoforms distribution. It was found that changes in asparagine concentration could result in a corresponding change in G0F, G1F, and G2F distribution. A follow-up study examined a wider range of asparagine concentration and it was found that G0F, G1F, and G2F percentage could be titrated by adjusting asparagine concentration. The observed changes in heterogeneity from changing asparagine concentration are due to resulting changes in ammonium metabolism. Further study ascertained that different integrated ammonium level during the cell culture process could control G0F, G1F, and G2F percentage distribution. A mechanism hypothesis is proposed that integrated ammonium level impacts intracellular pH, which further regulates β-1, 4 galactosyltransferase activity.
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Affiliation(s)
- Neil A McCracken
- Bioproduct Research and Development, Eli Lilly and Company, Lilly Corporate Center, DC 3945, Indianapolis, IN, 46285
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Zhuang X, Zhang D, Qin W, Deng J, Shan H, Tao L, Li Y. A comparison on the preparation of hot water extracts from Chlorella pyrenoidosa (CPEs) and radical scavenging and macrophage activation effects of CPEs. Food Funct 2014; 5:3252-60. [DOI: 10.1039/c4fo00214h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hot water extract ofChlorella pyrenoidosa, prepared under high-pressure, was effective atin vitrofree radical scavenging and macrophage growth promotion.
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Affiliation(s)
- Xiuyuan Zhuang
- State Key Laboratory of Bioreactor Engineering
- East China University of Science and Technology
- Shanghai 200237, People's Republic of China
| | - Daojing Zhang
- State Key Laboratory of Bioreactor Engineering
- East China University of Science and Technology
- Shanghai 200237, People's Republic of China
| | - Wen Qin
- College of Life and Environment Sciences
- Shanghai Normal University
- Shanghai 200234, People's Republic of China
| | - Jia Deng
- State Key Laboratory of Bioreactor Engineering
- East China University of Science and Technology
- Shanghai 200237, People's Republic of China
| | - Hui Shan
- State Key Laboratory of Bioreactor Engineering
- East China University of Science and Technology
- Shanghai 200237, People's Republic of China
| | - Liming Tao
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237, People's Republic of China
| | - Yuanguang Li
- State Key Laboratory of Bioreactor Engineering
- East China University of Science and Technology
- Shanghai 200237, People's Republic of China
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24
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Current world literature. Curr Opin Lipidol 2013; 24:86-94. [PMID: 23298962 DOI: 10.1097/mol.0b013e32835cb4f6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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