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Chikkanayakanahalli Mukunda D, Rodrigues J, Chandra S, Mazumder N, Vitkin A, Kishore Mahato K. Protein classification by autofluorescence spectral shape analysis using machine learning. Talanta 2024; 267:125167. [PMID: 37714041 DOI: 10.1016/j.talanta.2023.125167] [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: 05/27/2023] [Revised: 08/23/2023] [Accepted: 09/04/2023] [Indexed: 09/17/2023]
Abstract
Depending on the relative numbers and spatial arrangement of Tryptophan (Trp; W) and Tyrosine (Tyr; Y) residues, different proteins produce distinct autofluorescence (AF) spectral shapes when excited at ∼280 nm. Yet, considering the vast number and heterogeneous forms in nature, visual analysis and precise identification of proteins based on their AF spectra is challenging and further compounded in cases when different proteins produce substantially similar AF spectral shapes. There is, thus, a serious need to develop a methodology to address this problem. The current study proposes a practical technology to quickly identify proteins using machine learning (ML) algorithms based on their AF spectra. Specifically, AF spectra of fifteen different standard proteins of varying origin with distinct structural and Trp/Tyr compositions were recorded; based on the spectral features selected by the Minimum-Redundancy-Maximum-Relevance (mRMR) algorithm, a multiclass Support Vector Machine (SVM) learning model with Radial Basis Function (RBF), Polynomial, and Linear kernels classified the proteins with high accuracy of 99.06%, 99.03%, and 98.29% respectively. Since protein identification is the key to understand biological functions and disease diagnosis, the proposed methodology could offer a viable alternative to and improve the existing protein identification techniques.
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Affiliation(s)
| | - Jackson Rodrigues
- Department of Biophysics, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Subhash Chandra
- Department of Biophysics, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Nirmal Mazumder
- Department of Biophysics, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Alex Vitkin
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, M5G 1L7, Canada
| | - Krishna Kishore Mahato
- Department of Biophysics, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India.
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2
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Jain A, Kishore N. Glycation and drug binding by serum albumin. VITAMINS AND HORMONES 2024; 125:89-115. [PMID: 38997173 DOI: 10.1016/bs.vh.2023.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/14/2024]
Abstract
Accumulation of glycation products in patients with hyperglycaemic conditions can lead to their reaction with the proteins in the human system such as serum albumin, haemoglobin, insulin, plasma lipoproteins, lens proteins and collagen among others which have important biological functions. Therefore, it is important to understand if glycation of these proteins affects their normal action not only qualitatively, but also importantly quantitatively. Glycation of human serum albumin can easily be carried out over period of weeks and its drug transportability may be examined, in addition to characterisation of the amadori products. A combination of ultrasensitive isothermal titration calorimetry, differential scanning calorimetry, spectroscopy and chromatography provides structure-property-energetics correlations which are important to obtain mechanistic aspects of drug recognition, conformation of the protein, and role of amadori products under conditions of glycation. The role of advance glycation end products is important in recognition of antidiabetic drugs. Further, the extent of glycation of the protein and its implication on drug transportability investigated by direct calorimetric methods enables unravelling mechanistic insights into role of functionality on drug molecules in the binding process, and hinderance in the recognition process, if any, as a result of glycation. It is possible that the drug binding ability of the protein under glycation conditions may not be adversely affected, or may even lead to strengthened ability. Rigorous studies on such systems with diverse functionality on the drug molecules is required which is essential in deriving guidelines for improvements in the existing drugs or in the synthesis of new molecular entities directed towards addressing diabetic conditions.
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Affiliation(s)
- Anu Jain
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India
| | - Nand Kishore
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India.
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3
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Deng Y, Wang X, Zhang C, Xie P, Huang L. Inhibitory Effect of a Chinese Quince Seed Peptide on Protein Glycation: A Mechanism Study. JOURNAL OF BIORESOURCES AND BIOPRODUCTS 2023. [DOI: 10.1016/j.jobab.2023.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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4
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Simulation-guided relationships and interaction characteristics of human CtBP1 in complex with protocatechualdehyde. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Baralić M, Spasojević I, Miljuš G, Šunderić M, Robajac D, Dobrijević Z, Gligorijević N, Nedić O, Penezić A. Albumin at the intersection between antioxidant and pro-oxidant in patients on peritoneal dialysis. Free Radic Biol Med 2022; 187:105-112. [PMID: 35640817 DOI: 10.1016/j.freeradbiomed.2022.05.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 05/22/2022] [Indexed: 11/13/2022]
Abstract
Albumin (HSA) is a multifunctional protein and due to its free Cys34 thiol group, represents a main source of free thiols in the circulation. This property of HSA, combined with its ability to sequester redox active Cu(II) ions, makes HSA a dominant circulatory antioxidant. End stage kidney disease (ESRD) is a condition accompanied by elevated oxidative stress. The aim of the present study was to examine changes in the antioxidative capacity of HSA and Cu(II) binding affinity in patients on peritoneal dialysis (PD), and relate it to the Cys34 thiol group content and other structural changes of this molecule. HSA molecules are modified in ESRD patients subjected to PD, having significantly lower thiol group and bound Cu(II) content, reduced antioxidant capacity, an increased content of advanced glycation end-products and altered conformation. Also, Cu(II) binding capacity of HSA in these patients is impaired, since a significant portion of the high-affinity metal-binding site is unable to interact with Cu(II). Taking into account that the concentration of Cu(II) in the circulation of ESRD patients is much higher than in healthy persons and that Cu(II) binding capacity of HSA in these patients is significantly impaired, HSA may be considered as a novel circulatory pro-oxidant, thus exacerbating oxidative stress.
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Affiliation(s)
- Marko Baralić
- School of Medicine, University of Belgrade, 11000, Belgrade, Serbia; Department of Nephrology, Clinical Centre of Serbia, 11000, Belgrade, Serbia.
| | - Ivan Spasojević
- Institute for Multidisciplinary Research, University of Belgrade, 11000, Belgrade, Serbia.
| | - Goran Miljuš
- Institute for the Application of Nuclear Energy, INEP, University of Belgrade, 11000, Belgrade, Serbia.
| | - Miloš Šunderić
- Institute for the Application of Nuclear Energy, INEP, University of Belgrade, 11000, Belgrade, Serbia.
| | - Dragana Robajac
- Institute for the Application of Nuclear Energy, INEP, University of Belgrade, 11000, Belgrade, Serbia.
| | - Zorana Dobrijević
- Institute for the Application of Nuclear Energy, INEP, University of Belgrade, 11000, Belgrade, Serbia.
| | - Nikola Gligorijević
- Institute for the Application of Nuclear Energy, INEP, University of Belgrade, 11000, Belgrade, Serbia.
| | - Olgica Nedić
- Institute for the Application of Nuclear Energy, INEP, University of Belgrade, 11000, Belgrade, Serbia.
| | - Ana Penezić
- Institute for the Application of Nuclear Energy, INEP, University of Belgrade, 11000, Belgrade, Serbia.
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6
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Mukunda DC, Joshi VK, Chandra S, Siddaramaiah M, Rodrigues J, Gadag S, Nayak UY, Mazumder N, Satyamoorthy K, Mahato KK. Probing nonenzymatic glycation of proteins by deep ultraviolet light emitting diode induced autofluorescence. Int J Biol Macromol 2022; 213:279-296. [DOI: 10.1016/j.ijbiomac.2022.05.151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 03/25/2022] [Accepted: 05/22/2022] [Indexed: 01/03/2023]
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7
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Omeprazole inhibits α-glucosidase activity and the formation of nonenzymatic glycation products: Activity and mechanism. J Biosci Bioeng 2021; 133:110-118. [PMID: 34802943 DOI: 10.1016/j.jbiosc.2021.10.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/30/2021] [Accepted: 10/20/2021] [Indexed: 11/22/2022]
Abstract
In this study, the inhibitory effect and mechanism of omeprazole on α-glucosidase and nonenzymatic glycation were investigated in vitro by using multi-spectroscopic methods and molecular docking. Enzyme kinetic results showed that omeprazole inhibited α-glucosidase in a reversible and noncompetitive manner (IC50= 0.595 ± 0.003 mM). The results from fluorescence quenching and thermomechanical analyses signified that omeprazole reduced the fluorescence intensity of α-glucosidase by forming an omeprazole-α-glucosidase complex primarily driven by hydrogen bonds. Molecular docking further confirmed that hydrogen bonds and hydrophobic forces were the major driving forces for omeprazole binding to α-glucosidase. The nonenzymatic glycation assays revealed that omeprazole had a moderate inhibition against the formation of fructosamine, dicarbonyl compounds, and advanced glycation end products (AGEs). This study provides a new inhibitor of both α-glucosidase and nonenzymatic glycation and provides a practicable candidate for treating diabetes and its complications.
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Jacobs MJ, Pinger CW, Castiaux AD, Maloney KJ, Spence DM. A novel 3D-printed centrifugal ultrafiltration method reveals in vivo glycation of human serum albumin decreases its binding affinity for zinc. Metallomics 2021; 12:1036-1043. [PMID: 32626857 DOI: 10.1039/d0mt00123f] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Plasma proteins are covalently modified in vivo by the high-glucose conditions in the bloodstreams of people with diabetes, resulting in changes to both structure and function. Human Serum Albumin (HSA) functions as a carrier-protein in the bloodstream, binding various ligands and tightly regulating their bioavailability. HSA is known to react with glucose via the Maillard reaction, causing adverse effects on its ability to bind and deliver certain ligands, such as metals. Here, the binding between in vivo glycated HSA and zinc (Zn2+) was determined using a novel centrifugal ultrafiltration method that was developed using a 3D-printed device. This method is rapid (90 minutes), capable of high-throughput measurements (24 samples), low-cost (<$1.00 USD per device) and requires lower sample volumes (200 μL) compared to other binding techniques. This device was used to determine an equilibrium dissociation constant between Zn2+ and a commercially obtained normal HSA (nHSA) with a glycation level of 11.5% (Kd = 2.1 (±0.5) × 10-7 M). A glycated fraction of the nHSA sample was enriched (gHSA, 65.5%) and isolated using boronate-affinity chromatography, and found to have a 2.3-fold decrease in Zn2+ binding-affinity (Kd = 4.8 (±0.8) × 10-7 M) when compared to the nHSA sample. The level of glycation of HSA in control plasma (13.0% ± 0.8, n = 3 donors) and plasma from people with diabetes (26.9% ± 6.6, n = 5 donors) was assessed using mass spectrometry. Furthermore, HSA was isolated from plasma obtained in-house from a person with type 1 diabetes and found to have a glycation level of 24.1% and Kd = 3.3 (± 0.5) × 10-7 M for Zn2+, revealing a 1.5-fold decrease in binding affinity compared to nHSA. These findings suggest that increased levels of glycated HSA result in reduced binding to Zn2+, which may have implications in complications associated with diabetes.
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Affiliation(s)
- Monica J Jacobs
- Institute for Quantitative Health Science & Engineering, Michigan State University, East Lansing, MI 48824, USA. and Comparative Medicine and Integrative Biology, Michigan State University, East Lansing, MI 48824, USA
| | - Cody W Pinger
- Institute for Quantitative Health Science & Engineering, Michigan State University, East Lansing, MI 48824, USA. and Department of Biomedical Engineering, Michigan State University, East Lansing, MI 48824, USA
| | - Andre D Castiaux
- Department of Chemistry, Saint Louis University, East Lansing, MI 48824, USA
| | - Konnor J Maloney
- Department of Biomedical Engineering, Michigan State University, East Lansing, MI 48824, USA
| | - Dana M Spence
- Institute for Quantitative Health Science & Engineering, Michigan State University, East Lansing, MI 48824, USA. and Department of Biomedical Engineering, Michigan State University, East Lansing, MI 48824, USA
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9
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Liao X, Zhu C, Huang D, Wen X, Zhang SL, Shen Y. Profiling the interaction of a novel toxic pyruvate dehydrogenase kinase inhibitor with human serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 256:119733. [PMID: 33827040 DOI: 10.1016/j.saa.2021.119733] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 03/16/2021] [Accepted: 03/18/2021] [Indexed: 06/12/2023]
Abstract
To discover novel pyruvate dehydrogenase kinase (PDK) inhibitors, a new compound 2,2-dichloro-1-(4-((4-isopropylphenyl)amino)-3-nitrophenyl)ethan-1-one, namely XB-1 was identified, which inhibited PDK activity with a half maximal inhibitory concentration (IC50) value of 337.0 nM, and reduced A549 cell proliferation with a half maximal effective concentration (EC50) value of 330.0 nM. However, the compound appears to exhibit a negligible selectivity between cancer cell and normal one, indicating a potential toxicity existed for the compound. Herein, the interaction of the toxic XB-1 to human serum albumin (HSA) was firstly explored by spectroscopic approaches with the aim to reduce/avoid the toxicity of PDK inhibitors in the next hit-to-lead campaign. In detail, it was found that the XB-1 could effectively bind to HSA mainly via hydrogen bond interaction in PBS buffer (pH = 7.4, 10.0 mM), resulting in the formation of HSA-XB-1 complex. The negative value of ΔG showed that the binding of XB-1 to HSA is a spontaneous process. The result from site-selective binding assay suggested that the XB-1 bound to the site I of HSA by competing with warfarin, which was perfect in agreement with the molecular docking method. The results of this paper may offer a valuable theoretical basis to study the toxicity of biofunctional molecules and may offer thoughts about how to avoid/reduce toxicity for a small molecule.
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Affiliation(s)
- Xianjiu Liao
- West Guangxi Key Laboratory for Prevention and Treatment of High-Incidence Diseases, Youjiang Medical University for Nationalities, Baise 533000, China
| | - Chunlei Zhu
- School of Food & Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Ding Huang
- School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Xiaoqing Wen
- West Guangxi Key Laboratory for Prevention and Treatment of High-Incidence Diseases, Youjiang Medical University for Nationalities, Baise 533000, China
| | - Shao-Lin Zhang
- School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China.
| | - Yizhong Shen
- School of Food & Biological Engineering, Hefei University of Technology, Hefei 230009, China.
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Qiu HY, Hou NN, Shi JF, Liu YP, Kan CX, Han F, Sun XD. Comprehensive overview of human serum albumin glycation in diabetes mellitus. World J Diabetes 2021; 12:1057-1069. [PMID: 34326954 PMCID: PMC8311477 DOI: 10.4239/wjd.v12.i7.1057] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 05/06/2021] [Accepted: 06/04/2021] [Indexed: 02/06/2023] Open
Abstract
The presence of excess glucose in blood is regarded as a sweet hurt for patients with diabetes. Human serum albumin (HSA) is the most abundant protein in human plasma, which undergoes severe non-enzymatic glycation with glucose in patients with diabetes; this modifies the structure and function of HSA. Furthermore, the advanced glycation end products produced by glycated HSA can cause pathological damage to the human body through various signaling pathways, eventually leading to complications of diabetes. Many potential glycation sites on HSA have different degrees of sensitivity to glucose concentration. This review provides a comprehensive assessment of the in vivo glycation sites of HSA; it also discusses the effects of glycation on the structure and function of HSA. Moreover, it addresses the relationship between HSA glycation and diabetes complications. Finally, it focuses on the value of non-enzymatic glycation of HSA in diabetes-related clinical applications.
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Affiliation(s)
- Hong-Yan Qiu
- Department of Endocrinology, The Affiliated Hospital of Weifang Medical University, Weifang 261031, Shandong Province, China
| | - Ning-Ning Hou
- Department of Endocrinology, The Affiliated Hospital of Weifang Medical University, Weifang 261031, Shandong Province, China
| | - Jun-Feng Shi
- Department of Endocrinology, The Affiliated Hospital of Weifang Medical University, Weifang 261031, Shandong Province, China
| | - Yong-Ping Liu
- Department of Endocrinology, The Affiliated Hospital of Weifang Medical University, Weifang 261031, Shandong Province, China
| | - Cheng-Xia Kan
- Department of Endocrinology, The Affiliated Hospital of Weifang Medical University, Weifang 261031, Shandong Province, China
| | - Fang Han
- Department of Pathology, The Affiliated Hospital of Weifang Medical University, Weifang 261031, Shandong Province, China
| | - Xiao-Dong Sun
- Department of Endocrinology, The Affiliated Hospital of Weifang Medical University, Weifang 261031, Shandong Province, China
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Awang T, Niramitranon J, Japrung D, Saparpakorn P, Pongprayoon P. Investigating the binding affinities of fructose and galactose to human serum albumin: simulation studies. MOLECULAR SIMULATION 2021. [DOI: 10.1080/08927022.2021.1922687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Tadsanee Awang
- Department of Chemistry, Kasetsart University, Bangkok, Thailand
| | - Jitti Niramitranon
- Department of Computer Engineering, Kasetsart University, Bangkok, Thailand
| | - Deanpen Japrung
- National Nanotechnology Center, National Science and Technology Development Agency, Thailand Science Park, Pathumthani, Thailand
| | - Patchreenart Saparpakorn
- Department of Chemistry, Kasetsart University, Bangkok, Thailand
- Center for Advanced Studies in Nanotechnology for Chemical, Food and Agricultural Industries, KU Institute for Advanced Studies, Kasetsart University, Bangkok, Thailand
| | - Prapasiri Pongprayoon
- Department of Chemistry, Kasetsart University, Bangkok, Thailand
- Center for Advanced Studies in Nanotechnology for Chemical, Food and Agricultural Industries, KU Institute for Advanced Studies, Kasetsart University, Bangkok, Thailand
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Pohanka M. Glycated Hemoglobin and Methods for Its Point of Care Testing. BIOSENSORS 2021; 11:70. [PMID: 33806493 PMCID: PMC8000313 DOI: 10.3390/bios11030070] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 02/28/2021] [Accepted: 03/01/2021] [Indexed: 11/17/2022]
Abstract
Glycated hemoglobin (HbA1c) is a product of the spontaneous reaction between hemoglobin and elevated glucose levels in the blood. It is included among the so-called advanced glycation end products, of which is the most important for the clinical diagnosis of diabetes mellitus, and it can serve as an alternative to glycemia measurement. Compared to the diagnosis of diabetes mellitus by glycemia, the HbA1c level is less influenced by a short-term problem with diabetes compensation. Mass spectroscopy and chromatographic techniques are among the standard methods of HbA1c level measurement. Compared to glycemia measurement, there is lack of simple methods for diabetes mellitus diagnosis by means of the HbA1c assay using a point-of-care test. This review article is focused on the surveying of facts about HbA1c and its importance in diabetes mellitus diagnosis, and surveying standard methods and new methods suitable for the HbA1c assay under point-of-care conditions. Various bioassays and biosensors are mentioned and their specifications are discussed.
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Affiliation(s)
- Miroslav Pohanka
- Faculty of Military Health Sciences, University of Defense, Trebesska 1575, CZ-50001 Hradec Kralove, Czech Republic
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13
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Shiri F, Shahraki S, Bazzi-Alahri M. Assessing the in vitro and in silico interactions of two Palladium(II) dithiocarbamate complexes with human serum albumin. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128809] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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14
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Song S, Liu Q, Chai WM, Xia SS, Yu ZY, Wei QM. Inhibitory potential of 4-hexylresorcinol against α-glucosidase and non-enzymatic glycation: Activity and mechanism. J Biosci Bioeng 2020; 131:241-249. [PMID: 33191127 DOI: 10.1016/j.jbiosc.2020.10.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/26/2020] [Accepted: 10/27/2020] [Indexed: 12/26/2022]
Abstract
Inhibition of α-glucosidase as well as non-enzymatic glycation is thought as an effective method for treating type-2 diabetes mellitus. In this study, we investigated the inhibitory potential and mechanism of 4-hexylresorcinol against α-glucosidase and non-enzymatic glycation by using multispectroscopic analyses and molecular docking. The results of enzyme kinetics showed that 4-hexylresorcinol reversibly inhibited α-glucosidase activity in a noncompetitive way. Fluorescence quenching then revealed that it increased the hydrophobicity of α-glucosidase and changed the conformation of the enzyme by forming the α-glucosidase-hexylresorcinol complex. Thermodynamic analysis and molecular docking further demonstrated that the inhibition of 4-hexylresorcinol on the α-glucosidase was mainly dependent on hydrogen bond and hydrophobic interaction. Moreover, the 4-hexylresorcinol moderately inhibited the formation of fructosamine, and strongly suppressed the generation of α-dicarbonyl compounds and advanced glycation end products (AGEs). The interaction between 4-hexylresorcinol and bovine serum albumin was mainly driven by hydrophobic interaction. This study showed a novel inhibitor of α-glucosidase as well as non-enzymatic glycation, and provided a drug candidate for the prevention and treatment of type-2 diabetes.
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Affiliation(s)
- Shuang Song
- College of Life Science and Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China
| | - Qing Liu
- College of Life Science and Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China
| | - Wei-Ming Chai
- College of Life Science and Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China.
| | - Si-Shi Xia
- College of Life Science and Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China
| | - Zi-Yi Yu
- College of Life Science and Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China
| | - Qi-Ming Wei
- College of Life Science and Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China
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Mohd Sazlly Lim S, Sinnollareddy M, Sime FB. Challenges in Antifungal Therapy in Diabetes Mellitus. J Clin Med 2020; 9:E2878. [PMID: 32899911 PMCID: PMC7565282 DOI: 10.3390/jcm9092878] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 09/03/2020] [Indexed: 01/12/2023] Open
Abstract
Diabetic patients have an increased propensity to Candida sp. infections due to disease-related immunosuppression and various other physiological alterations. The incidence of candidiasis has increased in number over the years and is linked to significant morbidity and mortality in critically ill and immunosuppressed patients. Treatment of infection in diabetic patients may be complicated due to the various disease-related changes to the pharmacokinetics and pharmacodynamics (PK/PD) of a drug, including antifungal agents. Application of PK/PD principles may be a sensible option to optimise antifungal dosing regimens in this group of patients. Further studies on PK/PD of antifungals in patients with diabetes mellitus are needed as current data is limited or unavailable.
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Affiliation(s)
- Sazlyna Mohd Sazlly Lim
- Centre for Translational Anti-Infective Pharmacodynamics, School of Pharmacy, University of Queensland, Brisbane 4102, Australia;
- Department of Medicine, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Seri Kembangan 43400, Malaysia
| | - Mahipal Sinnollareddy
- Therapeutic Goods Administration, Canberra 2609, Australia;
- UQ Centre for Clinical Research, Faculty of Medicine, University of Queensland, Brisbane 4029, Australia
| | - Fekade Bruck Sime
- Centre for Translational Anti-Infective Pharmacodynamics, School of Pharmacy, University of Queensland, Brisbane 4102, Australia;
- UQ Centre for Clinical Research, Faculty of Medicine, University of Queensland, Brisbane 4029, Australia
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Anis MA, Sreerama YN. Inhibition of protein glycoxidation and advanced glycation end-product formation by barnyard millet (Echinochloa frumentacea) phenolics. Food Chem 2020; 315:126265. [DOI: 10.1016/j.foodchem.2020.126265] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 01/07/2020] [Accepted: 01/17/2020] [Indexed: 01/14/2023]
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17
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Ou-Yang C, Chai W, Xu X, Song S, Wei Q, Huang Q, Zou Z. Inhibitory potential of proanthocyanidins from the fruit pulp of Clausena lansium (Lour.) Skeels against α-glucosidase and non-enzymatic glycation: Activity and mechanism. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.01.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Sarmah S, Pahari S, Das S, Belwal VK, Jana M, Singha Roy A. Non-enzymatic glycation of human serum albumin modulates its binding efficacy towards bioactive flavonoid chrysin: A detailed study using multi-spectroscopic and computational methods. J Biomol Struct Dyn 2020; 39:476-492. [PMID: 31900044 DOI: 10.1080/07391102.2019.1711196] [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] [Indexed: 02/07/2023]
Abstract
The non-enzymatic glycation of plasma proteins by reducing sugars have important consequences on the conformational and functional properties of protein. The formation of advanced glycation end products (AGEs) is responsible for cell death and other pathological conditions. We have synthesized the glycated human serum albumin (gHSA) and characterized the same by using differential spectroscopic measurements. The aim of the present study is to determine the effect of glycation on the binding of human serum albumin (HSA) with bioactive flavonoid chrysin, which possesses anti-cancer, anti-inflammatory and anti-oxidant activities. The interaction of chrysin with HSA and gHSA was studied using multi-spectroscopic, molecular docking and molecular dynamics (MD) simulation techniques. Chrysin quenched the intrinsic fluorescence of both HSA and gHSA by static quenching mechanism. The value of the binding constant (Kb) for the interaction of HSA-chrysin complex (4.779 ± 0.623 × 105 M-1 at 300 K) was found to be higher than that of gHSA-chrysin complex (2.206 ± 0.234 × 105 M-1 at 300 K). Hence, non-enzymatic glycation of HSA significantly reduced its binding affinity towards chrysin. The % α-helicity of HSA was found to get enhanced upon binding with chrysin, and minimal changes were observed for the gHSA-chrysin complex. Site marker probe studies indicated that chrysin binds to subdomain IIA and IIIA of both HSA and gHSA. The results from molecular docking and MD simulation studies correlated well with the experimental findings. Electrostatic interactions followed by hydrogen bonding and hydrophobic interactions played major roles in the binding process. These observations may have some useful insights into the field of pharmaceutics.
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Affiliation(s)
- Sharat Sarmah
- Department of Chemistry, National Institute of Technology, Meghalaya, Shillong, India
| | - Somdev Pahari
- Molecular Simulation Laboratory, Department of Chemistry, National Institute of Technology, Rourkela, India
| | - Sourav Das
- Department of Chemistry, National Institute of Technology, Meghalaya, Shillong, India
| | - Vinay Kumar Belwal
- Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, India
| | - Madhurima Jana
- Molecular Simulation Laboratory, Department of Chemistry, National Institute of Technology, Rourkela, India
| | - Atanu Singha Roy
- Department of Chemistry, National Institute of Technology, Meghalaya, Shillong, India
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19
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Cao X, Xia Y, Zeng M, Wang W, He Y, Liu J. Caffeic Acid Inhibits the Formation of Advanced Glycation End Products (AGEs) and Mitigates the AGEs-Induced Oxidative Stress and Inflammation Reaction in Human Umbilical Vein Endothelial Cells (HUVECs). Chem Biodivers 2019; 16:e1900174. [PMID: 31419039 DOI: 10.1002/cbdv.201900174] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 08/15/2019] [Indexed: 12/29/2022]
Abstract
The advanced glycation end products (AGEs) are the compounds produced by non-enzymatic glycation reaction of proteins and sugars, which can induce the generation of free radicals and the expression of inflammatory factors, thereby playing an important role in vascular dysfunction in diabetes. To investigate the effects of caffeic acid (CA) on glycation formed by glucose and protein, various spectroscopic techniques and molecular docking methods were carried out. Furthermore, the protective effects of CA on human umbilical vein endothelial cells (HUVECs) damaged by AGEs were detected. The results indicated that CA inhibited AGEs formation in vitro, decreased the expression of IL-1β, IL-18, ICAM-1, VCAM-1, NLRP3, Caspase-1 and CRP (C-reactive protein) and reduced the ROS in HUVECs exposed to AGEs. Our findings suggested that the supplementation with dietary CA could prevent and delay the AGEs-induced vascular dysfunction in diabetes.
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Affiliation(s)
- Xiangyu Cao
- School of Life Sciences, Liaoning University, 66 Chongshan Middle Road, Shenyang, 110036, P. R. China
| | - Ying Xia
- School of Life Sciences, Liaoning University, 66 Chongshan Middle Road, Shenyang, 110036, P. R. China
| | - Meng Zeng
- Tianjin Academy of Environmental Sciences, 17 Fukang Road Nankai District, Tianjin, 300191, P. R. China
| | - Weiyu Wang
- School of Life Sciences, Liaoning University, 66 Chongshan Middle Road, Shenyang, 110036, P. R. China
| | - Yin He
- School of Life Sciences, Liaoning University, 66 Chongshan Middle Road, Shenyang, 110036, P. R. China
| | - Jianli Liu
- School of Life Sciences, Liaoning University, 66 Chongshan Middle Road, Shenyang, 110036, P. R. China
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20
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Wang W, Gan N, Sun Q, Wu D, Gan R, Zhang M, Tang P, Li H. Study on the interaction of ertugliflozin with human serum albumin in vitro by multispectroscopic methods, molecular docking, and molecular dynamics simulation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 219:83-90. [PMID: 31030051 DOI: 10.1016/j.saa.2019.04.047] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 04/15/2019] [Accepted: 04/17/2019] [Indexed: 06/09/2023]
Abstract
Ertugliflozin is a potent and selective inhibitor of sodium-dependent glucose cotransporters 2 (SGLT2) and used as a monotherapy to improve glycemic control in adult patients with type 2 diabetes. In this study, ertugliflozin binding to human serum albumin (HSA) was investigated by multispectroscopic and computer simulations. The fluorescence spectra demonstrated that the quenching mechanism of ertugliflozin and HSA was static quenching. Thermodynamic parameters indicated that hydrogen bonding and van der Waals forces played a key role in the binding. Fluorescence competition experiments and molecular docking revealed that ertugliflozin bound to HSA sites II. In three-dimensional fluorescence, circular dichroism spectroscopy, and molecular dynamics simulation, ertugliflozin did not affect the basic skeleton structure of HSA but slightly increased the α-helical structure content and changed the microenvironment around amino acid residues. Results provide valuable information on the basis of the interaction of ertugliflozin with HSA.
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Affiliation(s)
- Wenjing Wang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Na Gan
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Qiaomei Sun
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Di Wu
- Key Laboratory of Meat Processing of Sichuan, College of Pharmacy and Biological Engineering, Chengdu University, Chengdu 610106, China.
| | - Ruixue Gan
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Man Zhang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Peixiao Tang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Hui Li
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China.
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21
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Wang Z, Xing G, Zhang L. Glycated albumin level is significantly decreased in patients suffering nephrotic syndrome. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2019; 162:307-319. [DOI: 10.1016/bs.pmbts.2019.01.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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22
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Rivera-Velez SM, Hwang J, Navas J, Villarino NF. Identification of differences in the formation of plasma glycated proteins between dogs and humans under diabetes-like glucose concentration conditions. Int J Biol Macromol 2018; 123:1197-1203. [PMID: 30465839 DOI: 10.1016/j.ijbiomac.2018.11.188] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 11/19/2018] [Accepted: 11/19/2018] [Indexed: 12/16/2022]
Abstract
Dogs have been proposed as a translational model and used for studying aging, diabetes, and diabetes-related complications in humans. However, no studies have ever compared the glycation of plasma proteins between dogs and humans under similar experimental conditions. Thus, the aim of this study was to fill this gap by comparing the plasma protein glycation patterns of dogs and humans in an ex-vivo system. Canine and human plasma samples were incubated with glucose at concentrations comparable to those observed in diabetic patients. The final glucose plasma concentration resulted in similar glucose:albumin ratios in both species. Glycated proteins were evaluated by measuring the content of fructosamine, protein carbonyls, and the formation of advanced glycation end-products (AGEs). The concentrations of fructosamine and protein carbonyls in canine and human plasma increased in a glucose concentration-dependent manner (P < 0.0001). Of note, the relative increment of fructosamine and protein carbonyl content and AGE formation was always higher in human than in dog plasma. Our results reveal that the plasma glycation processes in dogs and humans are not similar. These novel findings could contribute to improve our understating about canine and human diabetes as well as other condition associated in the glycation of proteins.
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Affiliation(s)
- S M Rivera-Velez
- Program in Individualized Medicine, Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman 99164, WA, United States
| | - Julianne Hwang
- Program in Individualized Medicine, Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman 99164, WA, United States
| | - Jinna Navas
- Program in Individualized Medicine, Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman 99164, WA, United States
| | - Nicolas Francisco Villarino
- Program in Individualized Medicine, Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman 99164, WA, United States.
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Zeng L, Ding H, Hu X, Zhang G, Gong D. Galangin inhibits α-glucosidase activity and formation of non-enzymatic glycation products. Food Chem 2018; 271:70-79. [PMID: 30236734 DOI: 10.1016/j.foodchem.2018.07.148] [Citation(s) in RCA: 137] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 07/16/2018] [Accepted: 07/23/2018] [Indexed: 11/18/2022]
Abstract
Inhibition of α-glucosidase and non-enzymatic glycation is considered as an effective approach to treat type 2 diabetes. Herein, multispectroscopic techniques and molecular docking analysis were used to investigate the inhibition of galangin on α-glucosidase and non-enzymatic glycation. Galangin showed a reversible inhibition on α-glucosidase activity in a mixed-type manner through a monophasic kinetic process, and induced the fluorescence quenching and conformational changes of α-glucosidase by forming α-glucosidase-galgangin complex. Molecular docking revealed that galangin primarily interacted with the amino acid residues within the active site of α-glucosidase, which may prevent the entrance of substrate resulting in a decrease in catalytic efficiency of α-glucosidase. Moreover, galangin moderately inhibited the formation of intermediates of non-enzymatic glycation, fructosamine and α-dicarbonyl compounds and strongly inhibited the formation of advanced glycation end products.
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Affiliation(s)
- Li Zeng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Huafang Ding
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Xing Hu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Guowen Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
| | - Deming Gong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; New Zealand Institute of Natural Medicine Research, 8 Ha Crescent, Auckland 2104, New Zealand
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24
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Liu J, Xing X, Jing H. Differentiation of glycated residue numbers on heat-induced structural changes of bovine serum albumin. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2018; 98:2168-2175. [PMID: 28960315 DOI: 10.1002/jsfa.8701] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 08/29/2017] [Accepted: 09/19/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Glycation is an approach in dealing with heat-induced protein aggregation. The relationship between degree of glycation and heat-induced structural changes is still unclear. The present work investigates the effect of different numbers and sites of glycated residues on heat-induced structural changes of bovine serum albumin (BSA). Glycation of BSA was carried out with xylose (Xyl) and galactose (Gal) by Maillard reaction. Glycated residues in BSA were identified by liquid chromatography-tandem mass spectrometry, and heat-induced protein structural changes were characterized by fluorescence emission and synchronous fluorescence spectra, 8-anilino-1-naphthalenesulfonic acid fluorescence, Fourier transform infrared (FTIR) and circular dichroism (CD) spectra. RESULTS The numbers of glycated residues were 2 and 13 when BSA was glycated by Gal (BSA - Gal) and Xyl (BSA - Xyl), respectively. There were shifts of maximum wavelengths and decreases in fluorescence intensities for both intrinsic and extrinsic fluorescences; shifts of FTIR amide I, III, and A bands; and decrease or increase of CD band intensities, α-helix and β-sheet percentages when BSA was heated. Glycation with Gal or Xyl restrained in similar degrees those changes, including fluorescence wavelengths, amide I band, CD band intensities, and α-helix and β-sheet percentages. CONCLUSION Xyl glycated more residues than Gal, while their effects were similar in restraining heat-induced BSA structural changes. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Jianlei Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, PR China
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, PR China
| | - Xiaojuan Xing
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, PR China
| | - Hao Jing
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, PR China
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, PR China
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25
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Maciążek-Jurczyk M, Szkudlarek A, Chudzik M, Pożycka J, Sułkowska A. Alteration of human serum albumin binding properties induced by modifications: A review. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 188:675-683. [PMID: 28526195 DOI: 10.1016/j.saa.2017.05.023] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 04/23/2017] [Accepted: 05/09/2017] [Indexed: 06/07/2023]
Abstract
Albumin, a major transporting protein in the blood, is the main target of modification that affects the binding of drugs to Sudlow's site I and II. These modification of serum protein moderates its physiological function, and works as a biomarker of some diseases. The main goal of the paper was to explain the possible alteration of human serum albumin binding properties induced by modifications such as glycation, oxidation and ageing, their origin, methods of evaluation and positive and negative meaning described by significant researchers.
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Affiliation(s)
- Małgorzata Maciążek-Jurczyk
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Chair and Department of Physical Pharmacy, Jagiellońska 4, 41-200 Sosnowiec, Poland.
| | - Agnieszka Szkudlarek
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Chair and Department of Physical Pharmacy, Jagiellońska 4, 41-200 Sosnowiec, Poland
| | - Mariola Chudzik
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Chair and Department of Physical Pharmacy, Jagiellońska 4, 41-200 Sosnowiec, Poland
| | - Jadwiga Pożycka
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Chair and Department of Physical Pharmacy, Jagiellońska 4, 41-200 Sosnowiec, Poland
| | - Anna Sułkowska
- Silesian Medical College in Katowice, Mickiewicza 29, 40-085 Katowice, Poland
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26
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Pongprayoon P, Mori T. The critical role of dimer formation in monosaccharides binding to human serum albumin. Phys Chem Chem Phys 2018; 20:3249-3257. [DOI: 10.1039/c7cp06324e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Monosaccharides are found to bind tightly to human serum albumin when a dimeric structure is formed in the binding pocket.
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Affiliation(s)
| | - Toshifumi Mori
- Institute for Molecular Science
- Myodaiji
- Okazaki
- Japan
- School of Physical Sciences
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27
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Marques CMS, Nunes EA, Lago L, Pedron CN, Manieri TM, Sato RH, Oliveira VX, Cerchiaro G. Generation of Advanced Glycation End-Products (AGEs) by glycoxidation mediated by copper and ROS in a human serum albumin (HSA) model peptide: reaction mechanism and damage in motor neuron cells. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2017; 824:42-51. [PMID: 29150049 DOI: 10.1016/j.mrgentox.2017.10.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 10/17/2017] [Accepted: 10/17/2017] [Indexed: 06/07/2023]
Abstract
Glucose, in the presence of reactive oxygen species (ROS), acts as an as an oxidative agent and drives deleterious processes in Diabetes Mellitus. We have studied the mechanism and the toxicological effects of glucose-dependent glycoxidation reactions driven by copper and ROS, using a model peptide based on the exposed sequence of Human Serum Albumin (HSA) and containing a lysine residue susceptible to copper complexation. The main products of these reactions are Advanced Glycation End-products (AGEs). Carboxymethyl lysine and pyrraline condensed on the model peptide, generating a Modified Peptide (MP). These products were isolated, purified, and tested on cultured motor neuron cells. We observed DNA damage, enhancement of membrane roughness, and formation of domes. We evaluated nuclear abnormalities by the cytokinesis-blocked micronucleus assay and we measured cytostatic and cytotoxic effects, chromosomal breakage, nuclear abnormalities, and cell death. AGEs formed by glycoxidation caused large micronucleus aberrations, apoptosis, and large-scale nuclear abnormalities, even at low concentrations.
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Affiliation(s)
| | - Emilene Arusievicz Nunes
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil
| | - Larissa Lago
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil
| | - Cibele Nicolaski Pedron
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil
| | - Tânia Maria Manieri
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil
| | - Roseli Hiromi Sato
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil
| | - Vani Xavier Oliveira
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil
| | - Giselle Cerchiaro
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil.
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28
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Fructose-human serum albumin interaction undergoes numerous biophysical and biochemical changes before forming AGEs and aggregates. Int J Biol Macromol 2017; 109:896-906. [PMID: 29133088 DOI: 10.1016/j.ijbiomac.2017.11.069] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 11/08/2017] [Accepted: 11/10/2017] [Indexed: 01/07/2023]
Abstract
Fructose is a reducing and highly lipogenic sugar that has unique metabolic effects in the liver. Non-enzymatic fructosylation of proteins generates advanced glycation end products (AGEs). Human serum albumin (HSA) may undergo fructosylation vis-à-vis AGEs formation. High fructose consumption may lead to structurally altered and functionally compromised fructosylated-HSA-AGEs, which can cause damage to hepatocytes resulting in hepatic macro- and microvesicular steatosis. In this study, HSA was incubated with varying concentrations of fructose for 10days and the induced changes were studied. Fructosylated-HSA exhibited hyperchromicity, increased AGE-specific fluorescence, quenching of tryptophan fluorescence and increased melting temperature. Nε-[carboxymethyl]-lysine (CML), was detected by liquid chromatography mass spectrometry (LC-MS). Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) results showed decreased mobility in fructosylated-HSA. Perturbations in secondary and tertiary structure were revealed by fourier transform-infrared spectroscopy (FT-IR), supported by far- and near-UV circular dichroism (CD). Dynamic light scattering (DLS) and Matrix-Assisted Laser Desorption Ionization-Time of Flight (MALDI-TOF) mass spectrometry studies suggested increase in molecular mass of fructosylated-HSA. Amyloidogenic aggregates were confirmed from Congo red, Thioflavin T assay and Scanning electron microscope (SEM). These investigations confirmed the structural alterations in fructosylated-HSA and warrants further study to probe the role of fructosylated-HSA-AGEs in hepatopathy vis-à-vis fatty liver diseases.
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Methods of albumin estimation in clinical biochemistry: Past, present, and future. Clin Chim Acta 2017; 469:150-160. [PMID: 28410855 DOI: 10.1016/j.cca.2017.04.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 04/10/2017] [Accepted: 04/10/2017] [Indexed: 12/17/2022]
Abstract
Estimation of serum and urinary albumin is routinely performed in clinical biochemistry laboratories. In the past, precipitation-based methods were popular for estimation of human serum albumin (HSA). Currently, dye-binding or immunochemical methods are widely practiced. Each of these methods has its limitations. Research endeavors to overcome such limitations are on-going. The current trends in methodological aspects of albumin estimation guiding the field have not been reviewed. Therefore, it is the need of the hour to review several aspects of albumin estimation. The present review focuses on the modern trends of research from a conceptual point of view and gives an overview of recent developments to offer the readers a comprehensive understanding of the subject.
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30
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Yazdanpanah S, Rabiee M, Tahriri M, Abdolrahim M, Rajab A, Jazayeri HE, Tayebi L. Evaluation of glycated albumin (GA) and GA/HbA1c ratio for diagnosis of diabetes and glycemic control: A comprehensive review. Crit Rev Clin Lab Sci 2017; 54:219-232. [PMID: 28393586 DOI: 10.1080/10408363.2017.1299684] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Diabetes Mellitus (DM) is a group of metabolic diseases characterized by chronic high blood glucose concentrations (hyperglycemia). When it is left untreated or improperly managed, it can lead to acute complications including diabetic ketoacidosis and non-ketotic hyperosmolar coma. In addition, possible long-term complications include impotence, nerve damage, stroke, chronic kidney failure, cardiovascular disease, foot ulcers, and retinopathy. Historically, universal methods to measure glycemic control for the diagnosis of diabetes included fasting plasma glucose level (FPG), 2-h plasma glucose (2HP), and random plasma glucose. However, these measurements did not provide information about glycemic control over a long period of time. To address this problem, there has been a switch in the past decade to diagnosing diabetes and its severity through measurement of blood glycated proteins such as Hemoglobin A1c (HbA1c) and glycated albumin (GA). Diagnosis and evaluation of diabetes using glycated proteins has many advantages including high accuracy of glycemic control over a period of time. Currently, common laboratory methods used to measure glycated proteins are high-performance liquid chromatography (HPLC), immunoassay, and electrophoresis. HbA1c is one of the most important diagnostic factors for diabetes. However, some reports indicate that HbA1c is not a suitable marker to determine glycemic control in all diabetic patients. GA, which is not influenced by changes in the lifespan of erythrocytes, is thought to be a good alternative indicator of glycemic control in diabetic patients. Here, we review the literature that has investigated the suitability of HbA1c, GA and GA:HbA1c as indicators of long-term glycemic control and demonstrate the importance of selecting the appropriate glycated protein based on the patient's health status in order to provide useful and modern point-of-care monitoring and treatment.
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Affiliation(s)
- Sara Yazdanpanah
- a Biomaterials Group, Faculty of Biomedical Engineering , Amirkabir University of Technology , Tehran , Iran
| | - Mohammad Rabiee
- a Biomaterials Group, Faculty of Biomedical Engineering , Amirkabir University of Technology , Tehran , Iran
| | - Mohammadreza Tahriri
- a Biomaterials Group, Faculty of Biomedical Engineering , Amirkabir University of Technology , Tehran , Iran.,b Marquette University School of Dentistry , Milwaukee , WI , USA.,c Dental Biomaterials Department , School of Dentistry, Tehran University of Medical Sciences , Tehran , Iran
| | - Mojgan Abdolrahim
- a Biomaterials Group, Faculty of Biomedical Engineering , Amirkabir University of Technology , Tehran , Iran
| | | | | | - Lobat Tayebi
- b Marquette University School of Dentistry , Milwaukee , WI , USA
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31
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Effect of Temperature on Tolbutamide Binding to Glycated Serum Albumin. Molecules 2017; 22:molecules22040569. [PMID: 28362348 PMCID: PMC6154730 DOI: 10.3390/molecules22040569] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 03/20/2017] [Accepted: 03/27/2017] [Indexed: 12/17/2022] Open
Abstract
Glycation process occurs in protein and becomes more pronounced in diabetes when an increased amount of reducing sugar is present in bloodstream. Glycation of protein may cause conformational changes resulting in the alterations of its binding properties even though they occur at a distance from the binding sites. The changes in protein properties could be related to several pathological consequences such as diabetic and nondiabetic cardiovascular diseases, cataract, renal dysfunction and Alzheimer's disease. The experiment was designed to test the impact of glycation process on sulfonylurea drug tolbutamide-albumin binding under physiological (T = 309 K) and inflammatory (T = 311 K and T = 313 K) states using fluorescence and UV-VIS spectroscopies. It was found in fluorescence analysis experiments that the modification of serum albumin in tryptophanyl and tyrosyl residues environment may affect the tolbutamide (TB) binding to albumin in subdomain IIA and/or IIIA (Sudlow's site I and/or II), and also in subdomains IB and IIB. We estimated the binding of tolbutamide to albumin described by a mixed nature of interaction (specific and nonspecific). The association constants Ka (L∙mol-1) for tolbutamide at its high affinity sites on non-glycated albumin were in the range of 1.98-7.88 × 10⁴ L∙mol-1 (λex = 275 nm), 1.20-1.64 × 10⁴ L∙mol-1 (λex = 295 nm) and decreased to 1.24-0.42 × 10⁴ L∙mol-1 at λex = 275 nm (T = 309 K and T = 311 K) and increased to 2.79 × 10⁴ L∙mol-1 at λex = 275 nm (T = 313 K) and to 4.43-6.61 × 10⁴ L∙mol-1 at λex = 295 nm due to the glycation process. Temperature dependence suggests the important role of van der Waals forces and hydrogen bonding in hydrophobic interactions between tolbutamide and both glycated and non-glycated albumin. We concluded that the changes in the environment of TB binding of albumin in subdomain IIA and/or IIIA as well as in subdomains IB and IIB influence on therapeutic effect and therefore the studies of the binding of tolbutamide (in diabetes) to transporting protein under glycation that refers to the modification of a protein are of great importance in pharmacology and biochemistry. This information may lead to the development of more effective drug therapy in people with diabetes.
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Gao X, Bi H, Jia J, Tang L. Spectroscopic andin silicostudy of binding mechanism of cynidine-3-O-glucoside with human serum albumin and glycated human serum albumin. LUMINESCENCE 2016; 32:640-651. [DOI: 10.1002/bio.3233] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 09/02/2016] [Accepted: 09/12/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Xin Gao
- School of Life Science; Shandong Normal University; Jinan People's Republic of China
| | - Hongna Bi
- School of Life Science; Shandong Normal University; Jinan People's Republic of China
| | - Jingjing Jia
- School of Life Science; Shandong Normal University; Jinan People's Republic of China
| | - Lin Tang
- School of Life Science; Shandong Normal University; Jinan People's Republic of China
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Zeng L, Zhang G, Liao Y, Gong D. Inhibitory mechanism of morin on α-glucosidase and its anti-glycation properties. Food Funct 2016; 7:3953-63. [PMID: 27549567 DOI: 10.1039/c6fo00680a] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
It is important to investigate the inhibition of α-glucosidase due to its correlation with type 2 diabetes. Morin was found to exert significant inhibition activity on α-glucosidase in a reversible mixed-type manner with an IC50 value of (4.48 ± 0.04) μM. Analyses of fluorescence and circular dichroism spectra indicated that the formation of the morin-α-glucosidase complex was driven mainly by hydrophobic forces and hydrogen bonding, and caused the conformational changes of α-glucosidase. The phase diagrams of fluorescence showed that the conformational change process was monophasic without intermediates. Molecular docking indicated that morin mainly interacted with amino acid residues located close to the active site of α-glucosidase, which may move to cover the active pocket to reduce the binding of the substrate and then inhibit the catalytic activity. Morin was also found to exhibit inhibition in the generation of advanced glycation end products which was related to the long term complications of diabetes.
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Affiliation(s)
- Li Zeng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
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Awang T, Wiriyatanakorn N, Saparpakorn P, Japrung D, Pongprayoon P. Understanding the effects of two bound glucose in Sudlow site I on structure and function of human serum albumin: theoretical studies. J Biomol Struct Dyn 2016; 35:781-790. [DOI: 10.1080/07391102.2016.1160841] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Tadsanee Awang
- Faculty of Science, Department of Chemistry, Prince of Songkla University, Hatyai, Songkla 90112, Thailand
| | - Nuttapon Wiriyatanakorn
- Faculty of Science, Department of Chemistry, Kasetsart University, Chatuchak, Bangkok 10900, Thailand
| | - Patchreenart Saparpakorn
- Faculty of Science, Department of Chemistry, Kasetsart University, Chatuchak, Bangkok 10900, Thailand
| | - Deanpen Japrung
- National Nanotechnology Center, National Science and Technology Development Agency, Thailand Science Park, Pathumthani 12120, Thailand
| | - Prapasiri Pongprayoon
- Faculty of Science, Department of Chemistry, Kasetsart University, Chatuchak, Bangkok 10900, Thailand
- Center for Advanced Studies in Nanotechnology and its Applications in Chemical, Food and Agricultural Industries, Kasetsart University, Bangkok 10900, Thailand
- Computational Biomodelling Laboratory for Agricultural Science and Technology (CBLAST), Kasetsart University, Bangkok 10900, Thailand
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Awasthi S, Saraswathi N. Elucidating the molecular interaction of sinigrin, a potent anticancer glucosinolate from cruciferous vegetables with bovine serum albumin: effect of methylglyoxal modification. J Biomol Struct Dyn 2015; 34:2224-32. [DOI: 10.1080/07391102.2015.1110835] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Saurabh Awasthi
- Molecular Biophysics Lab, School of Chemical and Biotechnology, SASTRA University, Thanjavur 613401, Tamilnadu, India
| | - N.T. Saraswathi
- Molecular Biophysics Lab, School of Chemical and Biotechnology, SASTRA University, Thanjavur 613401, Tamilnadu, India
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Fratz EJ, Clayton J, Hunter GA, Ducamp S, Breydo L, Uversky VN, Deybach JC, Gouya L, Puy H, Ferreira GC. Human Erythroid 5-Aminolevulinate Synthase Mutations Associated with X-Linked Protoporphyria Disrupt the Conformational Equilibrium and Enhance Product Release. Biochemistry 2015; 54:5617-31. [PMID: 26300302 PMCID: PMC4573335 DOI: 10.1021/acs.biochem.5b00407] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Regulation of 5-aminolevulinate synthase (ALAS) is at the origin of balanced heme production in mammals. Mutations in the C-terminal region of human erythroid-specific ALAS (hALAS2) are associated with X-linked protoporphyria (XLPP), a disease characterized by extreme photosensitivity, with elevated blood concentrations of free protoporphyrin IX and zinc protoporphyrin. To investigate the molecular basis for this disease, recombinant hALAS2 and variants of the enzyme harboring the gain-of-function XLPP mutations were constructed, purified, and analyzed kinetically, spectroscopically, and thermodynamically. Enhanced activities of the XLPP variants resulted from increases in the rate at which the product 5-aminolevulinate (ALA) was released from the enzyme. Circular dichroism spectroscopy revealed that the XLPP mutations altered the microenvironment of the pyridoxal 5'-phosphate cofactor, which underwent further and specific alterations upon succinyl-CoA binding. Transient kinetic analyses of the variant-catalyzed reactions and protein fluorescence quenching upon binding of ALA to the XLPP variants demonstrated that the protein conformational transition step associated with product release was predominantly affected. Of relevance is the fact that XLPP could also be modeled in cell culture. We propose that (1) the XLPP mutations destabilize the succinyl-CoA-induced hALAS2 closed conformation and thus accelerate ALA release, (2) the extended C-terminus of wild-type mammalian ALAS2 provides a regulatory role that allows for allosteric modulation of activity, thereby controlling the rate of erythroid heme biosynthesis, and (3) this control is disrupted in XLPP, resulting in porphyrin accumulation.
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Affiliation(s)
- Erica J. Fratz
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, 33612, USA
| | - Jerome Clayton
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, 33612, USA
| | - Gregory A. Hunter
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, 33612, USA
| | - Sarah Ducamp
- Assistance Publique-Hôpitaux de Paris, Centre Français des Porphyries, Hôpital Louis Mourier, 178 rue des Renouillers, 92701 Colombes CEDEX, France
- INSERM U1149, CNRS ERL 8252, Centre de Recherche sur l’inflammation, 16 rue Henri Huchard, 75018, Université Paris Diderot, Site Bichat, 75018 Paris, France; Laboratory of Excellence, GR-Ex, Paris, France
| | - Leonid Breydo
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, 33612, USA
| | - Vladimir N. Uversky
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, 33612, USA
| | - Jean-Charles Deybach
- Assistance Publique-Hôpitaux de Paris, Centre Français des Porphyries, Hôpital Louis Mourier, 178 rue des Renouillers, 92701 Colombes CEDEX, France
- INSERM U1149, CNRS ERL 8252, Centre de Recherche sur l’inflammation, 16 rue Henri Huchard, 75018, Université Paris Diderot, Site Bichat, 75018 Paris, France; Laboratory of Excellence, GR-Ex, Paris, France
| | - Laurent Gouya
- Assistance Publique-Hôpitaux de Paris, Centre Français des Porphyries, Hôpital Louis Mourier, 178 rue des Renouillers, 92701 Colombes CEDEX, France
- INSERM U1149, CNRS ERL 8252, Centre de Recherche sur l’inflammation, 16 rue Henri Huchard, 75018, Université Paris Diderot, Site Bichat, 75018 Paris, France; Laboratory of Excellence, GR-Ex, Paris, France
| | - Hervé Puy
- Assistance Publique-Hôpitaux de Paris, Centre Français des Porphyries, Hôpital Louis Mourier, 178 rue des Renouillers, 92701 Colombes CEDEX, France
- INSERM U1149, CNRS ERL 8252, Centre de Recherche sur l’inflammation, 16 rue Henri Huchard, 75018, Université Paris Diderot, Site Bichat, 75018 Paris, France; Laboratory of Excellence, GR-Ex, Paris, France
| | - Gloria C. Ferreira
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, 33612, USA
- Department of Chemistry, University of South Florida, Tampa, Florida, 33612, USA
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Abstract
In vivo modification of proteins by molecules with reactive carbonyl groups leads to intermediate and advanced glycation end products (AGE). Glucose is a significant glycation reagent due to its high physiological concentration and poorly controlled diabetics show increased albumin glycation. Increased levels of glycated and AGE-modified albumin have been linked to diabetic complications, neurodegeneration, and vascular disease. This review discusses glycated albumin formation, structural consequences of albumin glycation on drug binding, removal of circulating AGE by several scavenger receptors, as well as AGE-induced proinflammatory signaling through activation of the receptor for AGE. Analytical methods for quantitative detection of protein glycation and AGE formation are compared. Finally, the use of glycated albumin as a novel clinical marker to monitor glycemic control is discussed and compared to glycated hemoglobin (HbA1c) as long-term indicator of glycemic status.
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