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Zhai Z, Schoenmakers PJ, Gargano AFG. Identification of heavily glycated proteoforms by hydrophilic-interaction liquid chromatography and native size-exclusion chromatography - High-resolution mass spectrometry. Anal Chim Acta 2024; 1304:342543. [PMID: 38637052 DOI: 10.1016/j.aca.2024.342543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 03/20/2024] [Accepted: 03/25/2024] [Indexed: 04/20/2024]
Abstract
BACKGROUND The non-enzymatic glycation of proteins and their advanced glycation end products (AGEs) are associated with protein transformations such as in the development of diseases and biopharmaceutical storage. The characterization of heavily glycated proteins at the intact level is of high interest as it allows to describe co-occurring protein modifications. However, the high heterogeneity of glycated protein makes this process challenging, and novel methods are required to accomplish this. RESULTS In this study, we investigated two novel LC-HRMS methods to study glycated reference proteins at the intact protein level: low-flow hydrophilic-interaction liquid chromatography (HILIC) and native size-exclusion chromatography (SEC). Model proteins were exposed to conditions that favored extensive glycation and the formation of AGEs. After glycation, complicated MS spectra were observed, along with a sharply reduced signal response, possibly due to protein denaturation and the formation of aggregates. When using HILIC-MS, the glycated forms of the proteins could be resolved based on the number of reducing monosaccharides. Moreover, some positional glycated isomers were separated. The SEC-MS method under non-denaturing conditions provided insights into glycated aggregates but offered only a limited separation of glycated species based on molar mass. Overall, more than 25 different types of species were observed in both methods, differing in molar mass by 14-162 Da. 19 of these species have not been previously reported. SIGNIFICANCE The proposed strategies show great potential to characterize highly glycated intact proteins from native and denaturing perspectives and provide new opportunities for fast clinical diagnoses and investigating glycation-related diseases.
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Affiliation(s)
- Ziran Zhai
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Amsterdam, the Netherlands; Centre for Analytical Sciences Amsterdam, Science Park 904, 1098 XH, Amsterdam, the Netherlands.
| | - Peter J Schoenmakers
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Amsterdam, the Netherlands; Centre for Analytical Sciences Amsterdam, Science Park 904, 1098 XH, Amsterdam, the Netherlands
| | - Andrea F G Gargano
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Amsterdam, the Netherlands; Centre for Analytical Sciences Amsterdam, Science Park 904, 1098 XH, Amsterdam, the Netherlands.
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2
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Mariño L, Belén Uceda A, Leal F, Adrover M. Insight into the Effect of Methylglyoxal on the Conformation, Function, and Aggregation Propensity of α-Synuclein. Chemistry 2024:e202400890. [PMID: 38687053 DOI: 10.1002/chem.202400890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 04/29/2024] [Accepted: 04/29/2024] [Indexed: 05/02/2024]
Abstract
It is well-known that people suffering from hyperglycemia have a higher propensity to develop Parkinson's disease (PD). One of the most plausible mechanisms linking these two pathologies is the glycation of neuronal proteins and the pathological consequences of it. α-Synuclein, a key component in PD, can be glycated at its fifteen lysine. In fact, the end products of this process have been detected on aggregated α-synuclein isolated from in vivo. However, the consequences of glycation are not entirely clear, which are of crucial importance to understand the mechanism underlying the connection between diabetes and PD. To better clarify this, we have here examined how methylglyoxal (the most important carbonyl compound found in the cytoplasm) affects the conformation and aggregation propensity of α-synuclein, as well as its ability to cluster and fuse synaptic-like vesicles. The obtained data prove that methylglyoxal induces the Lys-Lys crosslinking through the formation of MOLD. However, this does not have a remarkable effect on the averaged conformational ensemble of α-synuclein, although it completely depletes its native propensity to form soluble oligomers and insoluble amyloid fibrils. Moreover, methylglyoxal has a disrupting effect on the ability of α-synuclein to bind, cluster and fusion synaptic-like vesicles.
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Affiliation(s)
- Laura Mariño
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Institut de Recerca en Ciències de la Salut (IdISBa), Departament de Química, Universitat de les Illes Balears, Ctra, Valldemossa km 7.5, E-07122, Palma de Mallorca, Spain
| | - Ana Belén Uceda
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Institut de Recerca en Ciències de la Salut (IdISBa), Departament de Química, Universitat de les Illes Balears, Ctra, Valldemossa km 7.5, E-07122, Palma de Mallorca, Spain
| | - Francisco Leal
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Institut de Recerca en Ciències de la Salut (IdISBa), Departament de Química, Universitat de les Illes Balears, Ctra, Valldemossa km 7.5, E-07122, Palma de Mallorca, Spain
| | - Miquel Adrover
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Institut de Recerca en Ciències de la Salut (IdISBa), Departament de Química, Universitat de les Illes Balears, Ctra, Valldemossa km 7.5, E-07122, Palma de Mallorca, Spain
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3
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Uceda AB, Mariño L, Casasnovas R, Adrover M. An overview on glycation: molecular mechanisms, impact on proteins, pathogenesis, and inhibition. Biophys Rev 2024; 16:189-218. [PMID: 38737201 PMCID: PMC11078917 DOI: 10.1007/s12551-024-01188-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/21/2024] [Indexed: 05/14/2024] Open
Abstract
The formation of a heterogeneous set of advanced glycation end products (AGEs) is the final outcome of a non-enzymatic process that occurs in vivo on long-life biomolecules. This process, known as glycation, starts with the reaction between reducing sugars, or their autoxidation products, with the amino groups of proteins, DNA, or lipids, thus gaining relevance under hyperglycemic conditions. Once AGEs are formed, they might affect the biological function of the biomacromolecule and, therefore, induce the development of pathophysiological events. In fact, the accumulation of AGEs has been pointed as a triggering factor of obesity, diabetes-related diseases, coronary artery disease, neurological disorders, or chronic renal failure, among others. Given the deleterious consequences of glycation, evolution has designed endogenous mechanisms to undo glycation or to prevent it. In addition, many exogenous molecules have also emerged as powerful glycation inhibitors. This review aims to provide an overview on what glycation is. It starts by explaining the similarities and differences between glycation and glycosylation. Then, it describes in detail the molecular mechanism underlying glycation reactions, and the bio-molecular targets with higher propensity to be glycated. Next, it discusses the precise effects of glycation on protein structure, function, and aggregation, and how computational chemistry has provided insights on these aspects. Finally, it reports the most prevalent diseases induced by glycation, and the endogenous mechanisms and the current therapeutic interventions against it.
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Affiliation(s)
- Ana Belén Uceda
- Departament de Química, Universitat de Les Illes Balears, Health Research Institute of the Balearic Islands (IdISBa), Ctra. Valldemossa Km 7.5, 07122 Palma, Spain
| | - Laura Mariño
- Departament de Química, Universitat de Les Illes Balears, Health Research Institute of the Balearic Islands (IdISBa), Ctra. Valldemossa Km 7.5, 07122 Palma, Spain
| | - Rodrigo Casasnovas
- Departament de Química, Universitat de Les Illes Balears, Health Research Institute of the Balearic Islands (IdISBa), Ctra. Valldemossa Km 7.5, 07122 Palma, Spain
| | - Miquel Adrover
- Departament de Química, Universitat de Les Illes Balears, Health Research Institute of the Balearic Islands (IdISBa), Ctra. Valldemossa Km 7.5, 07122 Palma, Spain
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Alafaleq NO, Alruwaished GI, Khan MS, Al-Shouli ST, Mujamammi AH, Sabi EM, Sumaily KM, Almansour M, Alokail MS. Non-enzymatic glycation and aggregation of camel immunoglobulins induce breast cancer cell proliferation. J Mol Recognit 2023; 36:e3062. [PMID: 37849017 DOI: 10.1002/jmr.3062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 09/13/2023] [Accepted: 09/14/2023] [Indexed: 10/19/2023]
Abstract
Glycation of biomolecules results in the formation of advanced glycation end products (AGEs). Immunoglobulin G (IgG) has been implicated in the progression of various diseases, including diabetes and cancer. This study purified three IgG subclasses (IgG1, IgG2, and IgG3) from Camelus dromedarius colostrum using ammonium sulfate fractionation and chromatographic procedures. SDS-PAGE was performed to confirm the purity and molecular weight of the IgG subclasses. Several biochemical and biophysical techniques were employed to study the effect of glycation on camel IgG using methylglyoxal (MGO), a dicarbonyl sugar. Early glycation measurement showed an increase in the fructosamine content by ~four-fold in IgG2, ~two-fold in IgG3, and a slight rise in IgG1. AGEs were observed in all classes of IgGs with maximum hyperchromicity (96.6%) in IgG2. Furthermore, glycation-induced oxidation of IgGs led to an increase in carbonyl content and loss of -SH groups. Among subclass, IgG2 showed the highest (39.7%) increase in carbonyl content accompanied by 82.5% decrease in -SH groups. Far UV-CD analysis illustrated perturbation of β-sheet structure during glycation reaction with MGO. Moreover, glycation of IgG proceeds to various conformational states like aggregation and increased hydrophobicity. In addition, the cytotoxicity assay (MTT) illustrated the proliferation of breast cancer cells (MCF-7) with IgG2 treatment.
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Affiliation(s)
- Nouf O Alafaleq
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Ghaida I Alruwaished
- National Drug and Cosmetic Control Laboratory, Saudi Food and Drug Authority (SFDA), Riyadh, Saudi Arabia
| | - Mohd Shahnawaz Khan
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Samia T Al-Shouli
- Immunology Unit, Department of Pathology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Ahmed H Mujamammi
- Clinical Biochemistry Unit, Department of Pathology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Essa M Sabi
- Clinical Biochemistry Unit, Department of Pathology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Khalid M Sumaily
- Clinical Biochemistry Unit, Department of Pathology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Mohammed Almansour
- Medical Education Department, College of Medicine & KSUMC, King Saud University, Riyadh, Saudi Arabia
| | - Majed S Alokail
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
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Chegão A, Vicente Miranda H. Unveiling new secrets in Parkinson's disease: The glycatome. Behav Brain Res 2023; 442:114309. [PMID: 36706808 DOI: 10.1016/j.bbr.2023.114309] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 01/04/2023] [Accepted: 01/19/2023] [Indexed: 01/25/2023]
Abstract
We are witnessing a considerable increase in the incidence of Parkinson's disease (PD), which may be due to the general ageing of the population. While there is a plethora of therapeutic strategies for this disease, they still fail to arrest disease progression as they do not target and prevent the neurodegenerative process. The identification of disease-causing mutations allowed researchers to better dissect the underlying causes of this disease, highlighting, for example, the pathogenic role of alpha-synuclein. However, most PD cases are sporadic, which is making it hard to unveil the major causative mechanisms of this disease. In the recent years, epidemiological evidence suggest that type-2 diabetes mellitus (T2DM) individuals have higher risk and worst outcomes of PD, allowing to raise the hypothesis that some dysregulated processes in T2DM may contribute or even trigger the neurodegenerative process in PD. One major consequence of T2DM is the unprogrammed reaction between sugars, increased in T2DM, and proteins, a reaction named glycation. Pre-clinical reports show that alpha-synuclein is a target of glycation, and glycation potentiates its pathogenicity which contributes for the neurodegenerative process. Moreover, it triggers, anticipates, or aggravates several PD-like motor and non-motor complications. A given profile of proteins are differently glycated in diseased conditions, altering the brain proteome and leading to brain dysfunction and neurodegeneration. Herein we coin the term Glycatome as the profile of glycated proteins. In this review we report on the mechanisms underlying the association between T2DM and PD, with particular focus on the impact of protein glycation.
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Affiliation(s)
- Ana Chegão
- iNOVA4Health, NOVA Medical School, NMS, Universidade NOVA de Lisboa, Lisboa, Portugal
| | - Hugo Vicente Miranda
- iNOVA4Health, NOVA Medical School, NMS, Universidade NOVA de Lisboa, Lisboa, Portugal.
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Pujol A, Sanchis P, Grases F, Masmiquel L. Phytate Intake, Health and Disease: "Let Thy Food Be Thy Medicine and Medicine Be Thy Food". Antioxidants (Basel) 2023; 12:antiox12010146. [PMID: 36671007 PMCID: PMC9855079 DOI: 10.3390/antiox12010146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/04/2023] [Accepted: 01/05/2023] [Indexed: 01/11/2023] Open
Abstract
Phytate (myo-inositol hexakisphosphate or InsP6) is the main phosphorus reservoir that is present in almost all wholegrains, legumes, and oilseeds. It is a major component of the Mediterranean and Dietary Approaches to Stop Hypertension (DASH) diets. Phytate is recognized as a nutraceutical and is classified by the Food and Drug Administration (FDA) as Generally Recognized As Safe (GRAS). Phytate has been shown to be effective in treating or preventing certain diseases. Phytate has been shown to inhibit calcium salt crystallization and, therefore, to reduce vascular calcifications, calcium renal calculi and soft tissue calcifications. Moreover, the adsorption of phytate to the crystal faces can inhibit hydroxyapatite dissolution and bone resorption, thereby playing a role in the treatment/prevention of bone mass loss. Phytate has a potent antioxidation and anti-inflammatory action. It is capable of inhibiting lipid peroxidation through iron chelation, reducing iron-related free radical generation. As this has the effect of mitigating neuronal damage and loss, phytate shows promise in the treatment/prevention of neurodegenerative disease. It is reported that phytate improves lipid and carbohydrate metabolism, increases adiponectin, decreases leptin and reduces protein glycation, which is linked with macrovascular and microvascular diabetes complications. In this review, we summarize the benefits of phytate intake as seen in in vitro, animal model, epidemiological and clinical trials, and we also identify questions to answer in the future.
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Affiliation(s)
- Antelm Pujol
- Vascular and Metabolic Diseases Research Group, Endocrinology Department, Son Llàtzer University Hospital, Health Research Institute of the Balearic Islands (IdISBa), 07198 Palma de Mallorca, Spain
- Correspondence: (A.P.); (L.M.)
| | - Pilar Sanchis
- Laboratory of Renal Lithiasis Research, Deptartment of Chemistry, University of Balearic Islands, Health Research Institute of Balearic Islands, (IdISBa), 07122 Palma de Mallorca, Spain
| | - Felix Grases
- Laboratory of Renal Lithiasis Research, Deptartment of Chemistry, University of Balearic Islands, Health Research Institute of Balearic Islands, (IdISBa), 07122 Palma de Mallorca, Spain
| | - Luis Masmiquel
- Vascular and Metabolic Diseases Research Group, Endocrinology Department, Son Llàtzer University Hospital, Health Research Institute of the Balearic Islands (IdISBa), 07198 Palma de Mallorca, Spain
- Correspondence: (A.P.); (L.M.)
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7
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Singh H, Agrawal DK. Therapeutic potential of targeting the receptor for advanced glycation end products (RAGE) by small molecule inhibitors. Drug Dev Res 2022; 83:1257-1269. [PMID: 35781678 PMCID: PMC9474610 DOI: 10.1002/ddr.21971] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 06/06/2022] [Accepted: 06/12/2022] [Indexed: 01/05/2023]
Abstract
Receptor for advanced glycation end products (RAGE) is a 45 kDa transmembrane receptor of immunoglobulin family that can bind to various endogenous and exogenous ligands and initiate the inflammatory downstream signaling pathways. RAGE is involved in various disorders including cardiovascular and neurodegenerative diseases, cancer, and diabetes. This review summarizes the structural features of RAGE and its various isoforms along with their pathological effects. Mainly, the article emphasized on the translational significance of antagonizing the interactions of RAGE with its ligands using small molecules reported in the last 5 years and discusses future approaches that could be employed to block the interactions in the treatment of chronic inflammatory ailments. The RAGE inhibitors described in this article could prove as a powerful approach in the management of immune‐inflammatory diseases. A critical review of the literature suggests that there is a dire need to dive deeper into the molecular mechanism of action to resolve critical issues that must be addressed to understand RAGE‐targeting therapy and long‐term blockade of RAGE in human diseases.
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Affiliation(s)
- Harbinder Singh
- Department of Translational Research, College of Osteopathic Medicine of the Pacific Western University of Health Sciences, Pomona, California, USA
| | - Devendra K Agrawal
- Department of Translational Research, College of Osteopathic Medicine of the Pacific Western University of Health Sciences, Pomona, California, USA
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Pappenreiter M, Lhota G, Vorauer‐Uhl K, Sissolak B. Antibody glycation during a
CHO
fed‐batch process following a constrained second order reaction. Biotechnol Prog 2022; 38:e3261. [DOI: 10.1002/btpr.3261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 03/28/2022] [Accepted: 04/13/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Magdalena Pappenreiter
- Innovation Management Bilfinger Life Science GmbH Salzburg Austria
- Institute of Bioprocess Science and Engineering, Department of Biotechnology University of Natural Resources and Life Sciences Vienna Austria
| | - Gabriele Lhota
- Institute of Bioprocess Science and Engineering, Department of Biotechnology University of Natural Resources and Life Sciences Vienna Austria
| | - Karola Vorauer‐Uhl
- Institute of Bioprocess Science and Engineering, Department of Biotechnology University of Natural Resources and Life Sciences Vienna Austria
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Ishtikhar M, Siddiqui Z, Ahmad A, Ashraf JM, Arshad M, Doctor N, Al-Kheraif AA, Zamzami MA, Al-Thawadi SM, Kim J, Khan RH. Phytochemical thymoquinone prevents hemoglobin glycoxidation and protofibrils formation: A biophysical aspect. Int J Biol Macromol 2021; 190:508-519. [PMID: 34481855 DOI: 10.1016/j.ijbiomac.2021.08.202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 07/16/2021] [Accepted: 08/27/2021] [Indexed: 11/30/2022]
Abstract
d-ribose, a reducing sugar, in diabetic hyperglycemia provokes non-enzymatic glycoxidation of hemoglobin (Hb), an abundant protein of red blood cells (RBCs). Different types of intermediates adduct formation occur during glycoxidation, such as advanced glycation end-products (AGEs) which lead to amyloid formation due to structural and conformational alterations in protein. Therefore, the study of these intermediate adducts plays a pivotal role to discern their relationship with diabetes mellitus and related disorders. Here, we investigated the interaction mechanism of d-ribose with Hb, and Hb prebound phytochemical thymoquinone (TQ). Our investigation reveals that the interaction of TQ with histidine residues of Hb interferes with the interaction of d-ribose with glycine residues at the glycation-site. Based on that, we had performed a time-based (21-days) in-vitro glycoxidation study at 37 °C to investigate the structural perturbation mechanism of Hb at different time-intervals in absence/presence of TQ. We found that prolonged glycoxidation induces amyloid formation in absence of TQ but in its presence, the process was prohibited. In summary, this study examined and characterized biophysically different intermediate-states of protein carrying glycoxidation-modification. Our findings suggested that TQ potentially affects interaction of d-ribose with Hb that prevents glycoxidation and protofibril formation, which establishes TQ as a potential therapeutic agent.
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Affiliation(s)
- Mohd Ishtikhar
- Department of Chemistry, Indian Institute of Technology-Bombay, Mumbai 400076, India.
| | - Zeba Siddiqui
- Department of Biosciences, Integral University, Lucknow 226026, India
| | - Abrar Ahmad
- Department of Biochemistry, Faculty of Sciences, King Abdul-Aziz University, Jeddah 21589, Saudi Arabia
| | - Jalaluddin Mohammad Ashraf
- Department of Medical Laboratory Technology, Applied Medical Sciences, Jazan University, Jazan 45142, Saudi Arabia
| | - Mohammed Arshad
- Dental Biomaterials Research Chair, Dental Health Department, College of Applied Medical Sciences, King Saud University, P. O. Box: 10219, Riyadh 11433, Saudi Arabia
| | - Ninad Doctor
- Department of Chemistry, East Carolina University, NC 27834-4354, USA
| | - Abdulaziz A Al-Kheraif
- Dental Biomaterials Research Chair, Dental Health Department, College of Applied Medical Sciences, King Saud University, P. O. Box: 10219, Riyadh 11433, Saudi Arabia
| | - Mazin A Zamzami
- Department of Biochemistry, Faculty of Sciences, King Abdul-Aziz University, Jeddah 21589, Saudi Arabia
| | | | - Jihoe Kim
- Department of Medical Biotechnology and Reasech Institute of Cell Culture, YeungNam University, Gyeongsan 38541, Korea
| | - Rizwan Hassan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
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Liu JJ, You Y, Gao SQ, Tang S, Chen L, Wen GB, Lin YW. Identification of the Protein Glycation Sites in Human Myoglobin as Rapidly Induced by d-Ribose. Molecules 2021; 26:molecules26195829. [PMID: 34641382 PMCID: PMC8512392 DOI: 10.3390/molecules26195829] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/22/2021] [Accepted: 09/23/2021] [Indexed: 12/11/2022] Open
Abstract
Protein glycation is an important protein post-translational modification and is one of the main pathogenesis of diabetic angiopathy. Other than glycated hemoglobin, the protein glycation of other globins such as myoglobin (Mb) is less studied. The protein glycation of human Mb with ribose has not been reported, and the glycation sites in the Mb remain unknown. This article reports that d-ribose undergoes rapid protein glycation of human myoglobin (HMb) at lysine residues (K34, K87, K56, and K147) on the protein surface, as identified by ultra-high performance liquid chromatography-mass spectrometry (UHPLC-MS) and electrospray ionization tandem mass spectrometry (ESI-MS/MS). Moreover, glycation by d-ribose at these sites slightly decreased the rate of the met heme (FeIII) in reaction with H2O2 to form a ferryl heme (FeIV=O). This study provides valuable insight into the protein glycation by d-ribose and provides a foundation for studying the structure and function of glycated heme proteins.
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Affiliation(s)
- Jing-Jing Liu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China; (J.-J.L.); (S.T.); (L.C.)
| | - Yong You
- Laboratory of Protein Structure and Function, University of South China, Hengyang 421001, China; (Y.Y.); (S.-Q.G.); (G.-B.W.)
| | - Shu-Qin Gao
- Laboratory of Protein Structure and Function, University of South China, Hengyang 421001, China; (Y.Y.); (S.-Q.G.); (G.-B.W.)
| | - Shuai Tang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China; (J.-J.L.); (S.T.); (L.C.)
| | - Lei Chen
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China; (J.-J.L.); (S.T.); (L.C.)
| | - Ge-Bo Wen
- Laboratory of Protein Structure and Function, University of South China, Hengyang 421001, China; (Y.Y.); (S.-Q.G.); (G.-B.W.)
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China; (J.-J.L.); (S.T.); (L.C.)
- Laboratory of Protein Structure and Function, University of South China, Hengyang 421001, China; (Y.Y.); (S.-Q.G.); (G.-B.W.)
- Correspondence: ; Tel.: +86-734-8282375
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Sirangelo I, Iannuzzi C. Understanding the Role of Protein Glycation in the Amyloid Aggregation Process. Int J Mol Sci 2021; 22:ijms22126609. [PMID: 34205510 PMCID: PMC8235188 DOI: 10.3390/ijms22126609] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/15/2021] [Accepted: 06/16/2021] [Indexed: 02/06/2023] Open
Abstract
Protein function and flexibility is directly related to the native distribution of its structural elements and any alteration in protein architecture leads to several abnormalities and accumulation of misfolded proteins. This phenomenon is associated with a range of increasingly common human disorders, including Alzheimer and Parkinson diseases, type II diabetes, and a number of systemic amyloidosis characterized by the accumulation of amyloid aggregates both in the extracellular space of tissues and as intracellular deposits. Post-translational modifications are known to have an active role in the in vivo amyloid aggregation as able to affect protein structure and dynamics. Among them, a key role seems to be played by non-enzymatic glycation, the most unwanted irreversible modification of the protein structure, which strongly affects long-living proteins throughout the body. This study provided an overview of the molecular effects induced by glycation on the amyloid aggregation process of several protein models associated with misfolding diseases. In particular, we analyzed the role of glycation on protein folding, kinetics of amyloid formation, and amyloid cytotoxicity in order to shed light on the role of this post-translational modification in the in vivo amyloid aggregation process.
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12
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Bansal R, Jha SK, Jha NK. Size-based Degradation of Therapeutic Proteins - Mechanisms, Modelling and Control. Biomol Concepts 2021; 12:68-84. [PMID: 34146465 DOI: 10.1515/bmc-2021-0008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 05/07/2021] [Indexed: 02/02/2023] Open
Abstract
Protein therapeutics are in great demand due to their effectiveness towards hard-to-treat diseases. Despite their high demand, these bio-therapeutics are very susceptible to degradation via aggregation, fragmentation, oxidation, and reduction, all of which are very likely to affect the quality and efficacy of the product. Mechanisms and modelling of these degradation (aggregation and fragmentation) pathways is critical for gaining a deeper understanding of stability of these products. This review aims to provide a summary of major developments that have occurred towards unravelling the mechanisms of size-based protein degradation (particularly aggregation and fragmentation), modelling of these size-based degradation pathways, and their control. Major caveats that remain in our understanding and control of size-based protein degradation have also been presented and discussed.
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Affiliation(s)
- Rohit Bansal
- Department of Biotechnology, School of Engineering & Technology (SET), Sharda University, Greater Noida, Uttar Pradesh, India
| | - Saurabh Kumar Jha
- Department of Biotechnology, School of Engineering & Technology (SET), Sharda University, Greater Noida, Uttar Pradesh, India
| | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering & Technology (SET), Sharda University, Greater Noida, Uttar Pradesh, India
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13
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Hu KW, Fan HF, Lin HC, Huang JW, Chen YC, Shen CL, Shih YH, Tu LH. Exploring the Impact of Glyoxal Glycation on β-Amyloid Peptide (Aβ) Aggregation in Alzheimer's Disease. J Phys Chem B 2021; 125:5559-5571. [PMID: 34019761 DOI: 10.1021/acs.jpcb.1c02797] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Alzheimer's disease (AD) is characterized by the presence of extracellular senile plaques formed by β-amyloid (Aβ) peptides in the patient's brain. Previous studies have shown that the plaques in the AD brains are colocalized with the advanced glycation end products, which is mainly formed from a series of nonenzymatic reactions of proteins with reducing sugars or reactive dicarbonyls. Glycation was also demonstrated to increase the neurotoxicity of the Aβ peptides. To clarify the impact of glycation on Aβ aggregation, we synthesized two glycated Aβ42 peptides by replacing Lys16 and Lys28 with Nε-carboxymethyllysine respectively to mimic the occurrence of protein glycation. Afterward, we monitored the aggregation kinetics and conformational change for two glycated peptides. We also used fluorescence correlation spectroscopy to probe the early stage of peptide oligomerization and tested their abilities in copper binding and reactive oxygen species production. Our data show that glycation significantly slows down the aggregation process and induces more cytotoxicity especially at position 28. We speculated that the higher toxicity might result from a relatively stable oligomeric form of peptide and not from ROS production. The data shown here emphasized that glycated proteins would be an important therapeutic target in AD treatments.
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Affiliation(s)
- Kai-Wei Hu
- Department of Chemistry, National Taiwan Normal University, Taipei 100, Taiwan
| | - Hsiu-Fang Fan
- Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung 800, Taiwan
| | - Han-Chen Lin
- Department of Anatomy, School of Medicine, Kaohsiung Medical University, Kaohsiung 800, Taiwan
| | - Jian-Wei Huang
- Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung 800, Taiwan
| | - Yu-Chieh Chen
- Department of Chemistry, National Taiwan Normal University, Taipei 100, Taiwan
| | - Cai-Ling Shen
- Department of Chemistry, National Taiwan Normal University, Taipei 100, Taiwan
| | - Yao-Hsiang Shih
- Department of Anatomy, School of Medicine, Kaohsiung Medical University, Kaohsiung 800, Taiwan
| | - Ling-Hsien Tu
- Department of Chemistry, National Taiwan Normal University, Taipei 100, Taiwan
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14
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Alaei L, Ashengroph M, Moosavi-Movahedi AA. The concept of protein folding/unfolding and its impacts on human health. Adv Protein Chem Struct Biol 2021; 126:227-78. [PMID: 34090616 DOI: 10.1016/bs.apcsb.2021.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2023]
Abstract
Proteins have evolved in specific 3D structures and play different functions in cells and determine various reactions and pathways. The newly synthesized amino acid chains once depart ribosome must crumple into three-dimensional structures so can be biologically active. This process of protein that makes a functional molecule is called protein folding. The protein folding is both a biological and a physicochemical process that depends on the sequence of it. In fact, this process occurs more complicated and in some cases and in exposure to some molecules like glucose (glycation), mistaken folding leads to amyloid structures and fatal disorders called conformational diseases. Such conditions are detected by the quality control system of the cell and these abnormal proteins undergo renovation or degradation. This scenario takes place by the chaperones, chaperonins, and Ubiquitin-proteasome complex. Understanding of protein folding mechanisms from different views including experimental and computational approaches has revealed some intermediate ensembles such as molten globule and has been subjected to biophysical and molecular biology attempts to know more about prevalent conformational diseases.
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15
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Mir AR, Habib S, Uddin M. Recent Advances in Histone Glycation: Emerging role in Diabetes and Cancer. Glycobiology 2021; 31:1072-1079. [PMID: 33554241 DOI: 10.1093/glycob/cwab011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 01/18/2021] [Accepted: 01/28/2021] [Indexed: 12/15/2022] Open
Abstract
Ever increasing information on genome and proteome has offered fascinating details and new opportunities to understand the molecular biology. It is now known that histone proteins surrounding the DNA play a crucial role in the chromatin structure and function. Histones undergo a plethora of post-translational enzymatic modifications that influence nucleosome dynamics and affect DNA activity. Earlier research offered insights into the enzymatic modifications of histones; however attention has been diverted to histone modifications induced by by-products of metabolism without enzymatic engagement in the last decade. Non enzymatic modifications of histones are believed to be crucial for epigenetic landscape, cellular fate and for role in human diseases. Glycation of histone proteins constitutes the major non enzymatic modifications of nuclear proteins that have implications in diabetes and cancer. It has emerged that glycation damages nuclear proteins, modifies amino acids of histones at crucial locations, generates adducts affecting histone chromatin interaction, develops neo-epitopes inducing specific immune response and impacts cell function. Presence of circulating antibodies against glycated histone proteins in diabetes and cancer has shown immunological implications with diagnostic relevance. These crucial details make histone glycation an attractive focus for investigators. This review article, therefore, makes an attempt to exclusively summarize the recent researches in histone glycation, its impact on structural integrity of chromatin and elaborates on their role in diabetes and cancer. The work offers insights for future scientists who investigate the link between metabolism, bio-molecular structures, glycobiology, histone-DNA interactions in relation to diseases in humans.
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Affiliation(s)
- Abdul Rouf Mir
- Department of Biochemistry, Jawaharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, India
| | - Safia Habib
- Department of Biochemistry, Jawaharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, India
| | - Moin Uddin
- Department of Biochemistry, Jawaharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, India
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16
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Zanyatkin IA, Stroylova YY, Melnikova AK, Moosavi-Movahedi AA, Saboury AA, Haertle T, Muronetz VI. Unusual spiral structures formed by glycated β-casein in the presence of thioflavin T: amyloid transformation? Mendeleev Communications 2021. [DOI: 10.1016/j.mencom.2021.01.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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17
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Ramis R, Ortega-Castro J, Vilanova B, Adrover M, Frau J. Cu 2+, Ca 2+, and methionine oxidation expose the hydrophobic α-synuclein NAC domain. Int J Biol Macromol 2020; 169:251-263. [PMID: 33345970 DOI: 10.1016/j.ijbiomac.2020.12.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 09/04/2020] [Accepted: 12/03/2020] [Indexed: 11/25/2022]
Abstract
α-Synuclein is an intrinsically disordered protein whose aggregation is related to Parkinson's disease and other neurodegenerative disorders. Metal cations are one of the main factors affecting the propensity of α-synuclein to aggregate, either by directly binding to it or by catalyzing the production of reactive oxygen species that oxidize it. His50, Asp121 and several additional C-terminal α-synuclein residues are binding sites for numerous metal cations, while methionine sulfoxidation occurs readily on this protein under oxidative stress conditions. Molecular dynamics simulations are an excellent tool to obtain a microscopic picture of how metal binding or methionine sulfoxidation alter the conformational preferences of α-synuclein and, hence, its aggregation propensity. In this work, we report the first coarse-grained molecular dynamics study comparing the conformational ensembles of the native protein, the protein bound to either Cu2+ or Ca2+ at its main binding sites, and the methionine-sulfoxidized protein. Our results suggest that these events alter the transient α-synuclein intramolecular contacts, inducing a greater solvent exposure of its hydrophobic, aggregation-prone NAC domain, in full agreement with a recent experimental study on Ca2+ binding. Moreover, metal-binding residues directly participate in the long-range contacts that shield this domain and regulate α-synuclein aggregation. These results provide a molecular-level rationalization of the enhanced fibrillation experimentally observed in the presence of Cu2+ or Ca2+ and the oligomerization induced by methionine sulfoxidation.
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Affiliation(s)
- Rafael Ramis
- Institut Universitari d'Investigació en Cièencies de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain; Institut d'Investigació Sanitària Illes Balears (IdISBa), 07020 Palma de Mallorca, Spain
| | - Joaquín Ortega-Castro
- Institut Universitari d'Investigació en Cièencies de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain; Institut d'Investigació Sanitària Illes Balears (IdISBa), 07020 Palma de Mallorca, Spain.
| | - Bartolomé Vilanova
- Institut Universitari d'Investigació en Cièencies de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain; Institut d'Investigació Sanitària Illes Balears (IdISBa), 07020 Palma de Mallorca, Spain
| | - Miquel Adrover
- Institut Universitari d'Investigació en Cièencies de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain; Institut d'Investigació Sanitària Illes Balears (IdISBa), 07020 Palma de Mallorca, Spain
| | - Juan Frau
- Institut Universitari d'Investigació en Cièencies de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain; Institut d'Investigació Sanitària Illes Balears (IdISBa), 07020 Palma de Mallorca, Spain
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18
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Ramis R, Ortega-Castro J, Vilanova B, Adrover M, Frau J. Unraveling the NaCl Concentration Effect on the First Stages of α-Synuclein Aggregation. Biomacromolecules 2020; 21:5200-5212. [PMID: 33140640 DOI: 10.1021/acs.biomac.0c01292] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Intraneuronal aggregation of the intrinsically disordered protein α-synuclein is at the core of Parkinson's disease and related neurodegenerative disorders. Several reports show that the concentration of salts in the medium heavily affects its aggregation rate and fibril morphology, but a characterization of the individual monomeric conformations underlying these effects is still lacking. In this work, we have applied our α-synuclein-optimized coarse-grained molecular dynamics approach to decipher the structural features of the protein monomer under a range of NaCl concentrations (0.0-1.0 M). The results show that key intramolecular contacts between the terminal domains are lost at intermediate concentrations (leading to extended conformations likely to fibrillate), but recovered at high concentrations (leading to compact conformations likely to evolve toward amorphous aggregates). The pattern of direct interactions of the terminal α-synuclein domains with Na+ and Cl- ions plays a key role in explaining this effect. Our results are consistent with a recent study reporting a fibrillation enhancement at moderate NaCl concentrations but an inhibition at higher concentrations. The present work will contribute to improving our understanding of the structural features of monomeric α-synuclein, determining its NaCl-induced fibrillation propensity and the molecular basis of synucleinopathies, necessary for the future development of disease-halting therapies.
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Affiliation(s)
- Rafael Ramis
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain.,Institut d'Investigació Sanitària Illes Balears (IdISBa), 07020 Palma de Mallorca, Spain
| | - Joaquín Ortega-Castro
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain.,Institut d'Investigació Sanitària Illes Balears (IdISBa), 07020 Palma de Mallorca, Spain
| | - Bartolomé Vilanova
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain.,Institut d'Investigació Sanitària Illes Balears (IdISBa), 07020 Palma de Mallorca, Spain
| | - Miquel Adrover
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain.,Institut d'Investigació Sanitària Illes Balears (IdISBa), 07020 Palma de Mallorca, Spain
| | - Juan Frau
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain.,Institut d'Investigació Sanitària Illes Balears (IdISBa), 07020 Palma de Mallorca, Spain
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Limanaqi F, Biagioni F, Mastroiacovo F, Polzella M, Lazzeri G, Fornai F. Merging the Multi-Target Effects of Phytochemicals in Neurodegeneration: From Oxidative Stress to Protein Aggregation and Inflammation. Antioxidants (Basel) 2020; 9:antiox9101022. [PMID: 33092300 PMCID: PMC7589770 DOI: 10.3390/antiox9101022] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 10/14/2020] [Accepted: 10/16/2020] [Indexed: 02/08/2023] Open
Abstract
Wide experimental evidence has been provided in the last decade concerning the neuroprotective effects of phytochemicals in a variety of neurodegenerative disorders. Generally, the neuroprotective effects of bioactive compounds belonging to different phytochemical classes are attributed to antioxidant, anti-aggregation, and anti-inflammatory activity along with the restoration of mitochondrial homeostasis and targeting alterations of cell-clearing systems. Far from being independent, these multi-target effects represent interconnected events that are commonly implicated in the pathogenesis of most neurodegenerative diseases, independently of etiology, nosography, and the specific misfolded proteins being involved. Nonetheless, the increasing amount of data applying to a variety of neurodegenerative disorders joined with the multiple effects exerted by the wide variety of plant-derived neuroprotective agents may rather confound the reader. The present review is an attempt to provide a general guideline about the most relevant mechanisms through which naturally occurring agents may counteract neurodegeneration. With such an aim, we focus on some popular phytochemical classes and bioactive compounds as representative examples to design a sort of main highway aimed at deciphering the most relevant protective mechanisms which make phytochemicals potentially useful in counteracting neurodegeneration. In this frame, we emphasize the potential role of the cell-clearing machinery as a kernel in the antioxidant, anti-aggregation, anti-inflammatory, and mitochondrial protecting effects of phytochemicals.
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Affiliation(s)
- Fiona Limanaqi
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy;
| | - Francesca Biagioni
- Istituto di Ricovero e Cura a Carattere Scientifico Neuromed, Via Atinense 18, 86077 Pozzilli, Italy; (F.B.); (F.M.)
| | - Federica Mastroiacovo
- Istituto di Ricovero e Cura a Carattere Scientifico Neuromed, Via Atinense 18, 86077 Pozzilli, Italy; (F.B.); (F.M.)
| | - Maico Polzella
- Aliveda Laboratories, Viale Karol Wojtyla 19, 56042 Crespina Lorenzana, Italy;
| | - Gloria Lazzeri
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy;
- Correspondence: (G.L.); (F.F.)
| | - Francesco Fornai
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy;
- Istituto di Ricovero e Cura a Carattere Scientifico Neuromed, Via Atinense 18, 86077 Pozzilli, Italy; (F.B.); (F.M.)
- Correspondence: (G.L.); (F.F.)
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20
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Limanaqi F, Biagioni F, Gambardella S, Familiari P, Frati A, Fornai F. Promiscuous Roles of Autophagy and Proteasome in Neurodegenerative Proteinopathies. Int J Mol Sci 2020; 21:E3028. [PMID: 32344772 DOI: 10.3390/ijms21083028] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 04/22/2020] [Accepted: 04/23/2020] [Indexed: 12/12/2022] Open
Abstract
Alterations in autophagy and the ubiquitin proteasome system (UPS) are commonly implicated in protein aggregation and toxicity which manifest in a number of neurological disorders. In fact, both UPS and autophagy alterations are bound to the aggregation, spreading and toxicity of the so-called prionoid proteins, including alpha synuclein (α-syn), amyloid-beta (Aβ), tau, huntingtin, superoxide dismutase-1 (SOD-1), TAR-DNA-binding protein of 43 kDa (TDP-43) and fused in sarcoma (FUS). Recent biochemical and morphological studies add to this scenario, focusing on the coordinated, either synergistic or compensatory, interplay that occurs between autophagy and the UPS. In fact, a number of biochemical pathways such as mammalian target of rapamycin (mTOR), transcription factor EB (TFEB), Bcl2-associated athanogene 1/3 (BAG3/1) and glycogen synthase kinase beta (GSk3β), which are widely explored as potential targets in neurodegenerative proteinopathies, operate at the crossroad between autophagy and UPS. These biochemical steps are key in orchestrating the specificity and magnitude of the two degradation systems for effective protein homeostasis, while intermingling with intracellular secretory/trafficking and inflammatory pathways. The findings discussed in the present manuscript are supposed to add novel viewpoints which may further enrich our insight on the complex interactions occurring between cell-clearing systems, protein misfolding and propagation. Discovering novel mechanisms enabling a cross-talk between the UPS and autophagy is expected to provide novel potential molecular targets in proteinopathies.
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21
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Mariño L, Ramis R, Casasnovas R, Ortega-Castro J, Vilanova B, Frau J, Adrover M. Unravelling the effect of N(ε)-(carboxyethyl)lysine on the conformation, dynamics and aggregation propensity of α-synuclein. Chem Sci 2020; 11:3332-3344. [PMID: 34122841 PMCID: PMC8157327 DOI: 10.1039/d0sc00906g] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
α-Synuclein (αS) aggregation is a hallmark in several neurodegenerative diseases. Among them, Parkinson's disease is highlighted, characterized by the intraneuronal deposition of Lewy bodies (LBs) which causes the loss of dopaminergic neurons. αS is the main component of LBs and in them, it usually contains post-translational modifications. One of them is the formation of advanced glycation end-products (mainly CEL and MOLD) arising from its reaction with methylglyoxal. Despite its biological relevance, there are no data available proving the effect of glycation on the conformation of αS, nor on its aggregation mechanism. This has been hampered by the formation of a heterogeneous set of compounds that precluded conformational studies. To overcome this issue, we have here produced αS homogeneously glycated with CEL. Its use, together with different biophysical techniques and molecular dynamics simulations, allowed us to study for the first time the effect of glycation on the conformation of a protein. CEL extended the conformation of the N-terminal domain as a result of the loss of transient N-/C-terminal long-range contacts while increasing the heterogeneity of the conformational population. CEL also inhibited the αS aggregation, but it was not able to disassemble preexisting amyloid fibrils, thus proving that CEL found on LBs must be formed in a later event after aggregation. We study the effect of an advanced glycation end product (N(ε)-(carboxyethyl)lysine), found on the Lewy bodies of people suffering from Parkinson’s disease, on the conformational and aggregation features of alpha-synuclein.![]()
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Affiliation(s)
- Laura Mariño
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Institut d'Investigació Sanitària Illes Balears (IdISBa), Departament de Química, Universitat de les Illes Balears Ctra. Valldemossa km 7.5 E-07122 Palma de Mallorca Spain +34 971 173426 +34 971 173491
| | - Rafael Ramis
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Institut d'Investigació Sanitària Illes Balears (IdISBa), Departament de Química, Universitat de les Illes Balears Ctra. Valldemossa km 7.5 E-07122 Palma de Mallorca Spain +34 971 173426 +34 971 173491
| | - Rodrigo Casasnovas
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Institut d'Investigació Sanitària Illes Balears (IdISBa), Departament de Química, Universitat de les Illes Balears Ctra. Valldemossa km 7.5 E-07122 Palma de Mallorca Spain +34 971 173426 +34 971 173491
| | - Joaquín Ortega-Castro
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Institut d'Investigació Sanitària Illes Balears (IdISBa), Departament de Química, Universitat de les Illes Balears Ctra. Valldemossa km 7.5 E-07122 Palma de Mallorca Spain +34 971 173426 +34 971 173491
| | - Bartolomé Vilanova
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Institut d'Investigació Sanitària Illes Balears (IdISBa), Departament de Química, Universitat de les Illes Balears Ctra. Valldemossa km 7.5 E-07122 Palma de Mallorca Spain +34 971 173426 +34 971 173491
| | - Juan Frau
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Institut d'Investigació Sanitària Illes Balears (IdISBa), Departament de Química, Universitat de les Illes Balears Ctra. Valldemossa km 7.5 E-07122 Palma de Mallorca Spain +34 971 173426 +34 971 173491
| | - Miquel Adrover
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Institut d'Investigació Sanitària Illes Balears (IdISBa), Departament de Química, Universitat de les Illes Balears Ctra. Valldemossa km 7.5 E-07122 Palma de Mallorca Spain +34 971 173426 +34 971 173491
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22
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Das S, Pahari S, Sarmah S, Rohman MA, Paul D, Jana M, Singha Roy A. Lysozyme-luteolin binding: molecular insights into the complexation process and the inhibitory effects of luteolin towards protein modification. Phys Chem Chem Phys 2019; 21:12649-12666. [PMID: 31157335 DOI: 10.1039/c9cp01128e] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In the proposed work, the complexation of bioactive flavonoid luteolin with hen egg white lysozyme (HEWL) along with its inhibitory influence on HEWL modification has been explored with the help of multi-spectroscopic and computational methods. The binding affinity has been observed to be moderate in nature (in the order of 104 M-1) and the static quenching mechanism was found to be involved in the fluorescence quenching process. The binding constant (Kb) shows a progressive increase with the increase in temperature from (4.075 ± 0.046 × 104 M-1) at 293 K to (6.962 ± 0.024 × 104 M-1) at 313 K under experimental conditions. Spectroscopic measurements along with molecular docking calculations suggest that Trp62 is involved in the binding site of luteolin within the geometry of HEWL. The positive changes in enthalpy (ΔH = +19.99 ± 0.65 kJ mol-1) as well as entropy (ΔS = +156.28 ± 2.00 J K-1 mol-1) are indicative of the presence of hydrophobic forces that stabilize the HEWL-luteolin complex. The micro-environment around the Trp residues showed an increase in hydrophobicity as indicated by synchronous fluorescence (SFS), three dimensional fluorescence (3D) and red edge excitation (REES) studies. The % α-helix of HEWL showed a marked reduction upon binding with luteolin as indicated by circular dichroism (CD) and Fourier-transform infrared spectroscopy (FTIR) studies. Moreover, luteolin is situated at a distance of 4.275 ± 0.004 nm from the binding site as indicated by FRET theory, and the rate of energy transfer kET (0.063 ± 0.004 ns-1) has been observed to be faster than the donor decay rate (1/τD = 0.606 ns-1), which is indicative of the non-radiative energy transfer during complexation. Leaving aside the binding study, luteolin showed promising inhibitory effects towards the d-ribose mediated glycation of HEWL as well as towards HEWL fibrillation as studied by fluorescence emission and imaging studies. Excellent correlation with the experimental observations as well as precise location and dynamics of luteolin within the binding site has been obtained from molecular docking and molecular dynamics simulation studies.
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Affiliation(s)
- Sourav Das
- Department of Chemistry, National Institute of Technology, Shillong 793003, Meghalaya, India.
| | - Somdev Pahari
- Molecular Simulation Laboratory, Department of Chemistry, National Institute of Technology, Rourkela 769008, India.
| | - Sharat Sarmah
- Department of Chemistry, National Institute of Technology, Shillong 793003, Meghalaya, India.
| | - Mostofa Ataur Rohman
- Centre for Advanced Studies, Department of Chemistry, North-Eastern Hill University, Shillong 793022, India
| | - Debojit Paul
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Madhurima Jana
- Molecular Simulation Laboratory, Department of Chemistry, National Institute of Technology, Rourkela 769008, India.
| | - Atanu Singha Roy
- Department of Chemistry, National Institute of Technology, Shillong 793003, Meghalaya, India.
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23
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Prabha B, Sini S, Sherin DR, Neethu S, Rameshkumar KB, Manojkumar TK, Jayamurthy P, Radhakrishnan KV. Promalabaricone B from Myristica fatua Houtt. seeds demonstrate antidiabetic potential by modulating glucose uptake via the upregulation of AMPK in L6 myotubes. Nat Prod Res 2019; 35:867-872. [PMID: 31104493 DOI: 10.1080/14786419.2019.1607852] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Promalabaricone B (PMB), an acylphenol was isolated from dichloromethane-soluble extract of the seeds of Myrisitica fatua Houtt. PMB exhibited significant inhibitory activity on α-glucosidase enzyme. The molecular docking and dynamics studies of PMB with human maltase-glucoamylase were performed. PMB exhibited an enhanced glucose uptake in L6 myotubes with 46.3% in 2.5 µM. Encouraged with these results; we investigated the molecular mechanism of PMB through the upregulation of AMPK. The results revealed that PMB promoted the glucose uptake in myocytes by stimulating the translocation and expression of GLUT4. From this, it is clear that PMB can acts as a potential therapeutic option for diabetes treatment, and its hypoglycaemic effect may be mediated by AMPK upregulation and induction of GLUT4 translocation.
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Affiliation(s)
- B Prabha
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram, India
| | - S Sini
- Agroprocessing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram, India
| | - D R Sherin
- Centre for Computational Modelling and Data Engineering, Indian Institute of Information Technology and Management, Thiruvananthapuram, India
| | - S Neethu
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram, India.,Academy of Scientific and Innovative Research (AcSIR), Thiruvananthapuram, India
| | - K B Rameshkumar
- Phytochemistry Division, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Thiruvananthapuram, India
| | - T K Manojkumar
- Centre for Computational Modelling and Data Engineering, Indian Institute of Information Technology and Management, Thiruvananthapuram, India
| | - P Jayamurthy
- Agroprocessing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram, India.,Academy of Scientific and Innovative Research (AcSIR), Thiruvananthapuram, India
| | - K V Radhakrishnan
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram, India.,Academy of Scientific and Innovative Research (AcSIR), Thiruvananthapuram, India
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24
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Mariño L, Casasnovas R, Ramis R, Vilanova B, Ortega-Castro J, Frau J, Adrover M. Does glycation really distort the peptide α-helicity? Int J Biol Macromol 2019; 129:254-266. [DOI: 10.1016/j.ijbiomac.2019.01.213] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 12/23/2018] [Accepted: 01/31/2019] [Indexed: 01/19/2023]
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25
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Awasthi S, Preethy R, Saraswathi N. Nordihydroguaiaretic acid prevents glycation induced structural alterations and aggregation of albumin. Int J Biol Macromol 2019; 122:479-484. [DOI: 10.1016/j.ijbiomac.2018.10.173] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 10/19/2018] [Accepted: 10/25/2018] [Indexed: 12/20/2022]
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26
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Abdullah K, Qais FA, Ahmad I, Hasan H, Naseem I. Study of pyridoxamine against glycation and reactive oxygen species production in human serum albumin as model protein: An in vitro & ex vivo approach. Int J Biol Macromol 2018; 120:1734-1743. [DOI: 10.1016/j.ijbiomac.2018.09.176] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 09/26/2018] [Accepted: 09/26/2018] [Indexed: 12/23/2022]
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27
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Wang W, Roberts CJ. Protein aggregation – Mechanisms, detection, and control. Int J Pharm 2018; 550:251-268. [DOI: 10.1016/j.ijpharm.2018.08.043] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 08/18/2018] [Accepted: 08/20/2018] [Indexed: 12/19/2022]
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28
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Golubev A, Hanson AD, Gladyshev VN. A Tale of Two Concepts: Harmonizing the Free Radical and Antagonistic Pleiotropy Theories of Aging. Antioxid Redox Signal 2018; 29:1003-1017. [PMID: 28874059 PMCID: PMC6104246 DOI: 10.1089/ars.2017.7105] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Revised: 08/09/2017] [Accepted: 08/31/2017] [Indexed: 12/18/2022]
Abstract
SIGNIFICANCE The two foremost concepts of aging are the mechanistic free radical theory (FRT) of how we age and the evolutionary antagonistic pleiotropy theory (APT) of why we age. Both date from the late 1950s. The FRT holds that reactive oxygen species (ROS) are the principal contributors to the lifelong cumulative damage suffered by cells, whereas the APT is generally understood as positing that genes that are good for young organisms can take over a population even if they are bad for the old organisms. Recent Advances: Here, we provide a common ground for the two theories by showing how aging can result from the inherent chemical reactivity of many biomolecules, not just ROS, which imposes a fundamental constraint on biological evolution. Chemically reactive metabolites spontaneously modify slowly renewable macromolecules in a continuous way over time; the resulting buildup of damage wrought by the genes coding for enzymes that generate such small molecules eventually masquerades as late-acting pleiotropic effects. In aerobic organisms, ROS are major agents of this damage but they are far from alone. CRITICAL ISSUES Being related to two sides of the same phenomenon, these theories should be compatible. However, the interface between them is obscured by the FRT mistaking a subset of damaging processes for the whole, and the APT mistaking a cumulative quantitative process for a qualitative switch. FUTURE DIRECTIONS The manifestations of ROS-mediated cumulative chemical damage at the population level may include the often-observed negative correlation between fitness and the rate of its decline with increasing age, further linking FRT and APT. Antioxid. Redox Signal. 29, 1003-1017.
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Affiliation(s)
- Alexey Golubev
- Department of Carcinogenesis and Oncogerontology, Petrov Research Institute of Oncology, Saint Petersburg, Russia
| | - Andrew D. Hanson
- Horticultural Sciences Department, University of Florida, Gainesville, Florida
| | - Vadim N. Gladyshev
- Division of Genetics, Department of Medicine, Harvard Medical School, Brigham and Women's Hospital, Boston, Massachusetts
- Belozersky Institute of Physico-Chemical Biology, Moscow State University, Moscow Russia
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29
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Prabha B, Neethu S, Krishnan SL, Sherin D, Madhukrishnan M, Ananthakrishnan R, Rameshkumar K, Manojkumar T, Jayamurthy P, Radhakrishnan K. Antidiabetic potential of phytochemicals isolated from the stem bark of Myristica fatua Houtt. var. magnifica (Bedd.) Sinclair. Bioorg Med Chem 2018; 26:3461-3467. [DOI: 10.1016/j.bmc.2018.05.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 05/10/2018] [Accepted: 05/14/2018] [Indexed: 12/15/2022]
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30
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: An update for 2013-2014. Mass Spectrom Rev 2018; 37:353-491. [PMID: 29687922 DOI: 10.1002/mas.21530] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 11/29/2016] [Indexed: 06/08/2023]
Abstract
This review is the eighth update of the original article published in 1999 on the application of Matrix-assisted laser desorption/ionization mass spectrometry (MALDI) mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2014. Topics covered in the first part of the review include general aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, fragmentation, and arrays. The second part of the review is devoted to applications to various structural types such as oligo- and poly- saccharides, glycoproteins, glycolipids, glycosides, and biopharmaceuticals. Much of this material is presented in tabular form. The third part of the review covers medical and industrial applications of the technique, studies of enzyme reactions, and applications to chemical synthesis. © 2018 Wiley Periodicals, Inc. Mass Spec Rev 37:353-491, 2018.
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Affiliation(s)
- David J Harvey
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford, OX3 7FZ, United Kingdom
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31
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Sanchis P, Rivera R, Berga F, Fortuny R, Adrover M, Costa-Bauza A, Grases F, Masmiquel L. Phytate Decreases Formation of Advanced Glycation End-Products in Patients with Type II Diabetes: Randomized Crossover Trial. Sci Rep 2018; 8:9619. [PMID: 29941991 PMCID: PMC6018557 DOI: 10.1038/s41598-018-27853-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 06/12/2018] [Indexed: 01/13/2023] Open
Abstract
Myo-inositol hexaphosphate (phytate; IP6) is a natural compound that is abundant in cereals, legumes, and nuts and it has the ability to chelate metal cations. The binding of IP6 to transition metals suggests that it could be used for the treatment of metal-catalyzed protein glycation, which appears to trigger diabetes-related diseases. Our in vitro studies showed that IP6 reduced the formation of Fe3+-catalyzed advanced glycation end-products (AGEs). This led us to perform a randomized cross-over trial to investigate the impact of the daily consumption IP6 on protein glycation in patients with type 2 diabetes mellitus (T2DM; n = 33). Thus, we measured AGEs, glycated hemoglobin (HbA1c), several vascular risk factors, and urinary IP6 at baseline and at the end of the intervention period. Patients who consumed IP6 supplements for 3 months had lower levels of circulating AGEs and HbA1c than those who did not consume IP6. This is the first report to show that consumption of IP6 inhibits protein glycation in patients with T2DM. Considering that AGEs contribute to microvascular and macrovascular complications in T2DM, our data indicates that dietary supplementation with IP6 should be considered as a therapy to prevent the formation of AGEs and therefore, the development of diabetes-related diseases in patients with T2DM.
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Affiliation(s)
- Pilar Sanchis
- Endocrinology Department, Research Unit, Hospital Son Llàtzer, Institute of Health Sciences Research [IUNICS- IdISBa], 07198, Palma of Mallorca, Spain.
- Laboratory of Renal Lithiasis Research, University of Balearic Islands, Institute of Health Sciences Research [IUNICS- IdISBa], 07122, Palma of Mallorca, Spain.
| | - Rosmeri Rivera
- Endocrinology Department, Research Unit, Hospital Son Llàtzer, Institute of Health Sciences Research [IUNICS- IdISBa], 07198, Palma of Mallorca, Spain
| | - Francisco Berga
- Laboratory of Renal Lithiasis Research, University of Balearic Islands, Institute of Health Sciences Research [IUNICS- IdISBa], 07122, Palma of Mallorca, Spain
| | - Regina Fortuny
- Laboratory Department, Hospital Son Llàtzer, 07198, Palma of Mallorca, Spain
| | - Miquel Adrover
- Department of Chemistry, University of Balearic Islands, Ctra. Valldemossa km 7.5, 07122, Palma of Mallorca, Spain
| | - Antonia Costa-Bauza
- Laboratory of Renal Lithiasis Research, University of Balearic Islands, Institute of Health Sciences Research [IUNICS- IdISBa], 07122, Palma of Mallorca, Spain
| | - Felix Grases
- Laboratory of Renal Lithiasis Research, University of Balearic Islands, Institute of Health Sciences Research [IUNICS- IdISBa], 07122, Palma of Mallorca, Spain
| | - Luis Masmiquel
- Endocrinology Department, Research Unit, Hospital Son Llàtzer, Institute of Health Sciences Research [IUNICS- IdISBa], 07198, Palma of Mallorca, Spain.
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32
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Khan MV, Zakariya SM, Khan RH. Protein folding, misfolding and aggregation: A tale of constructive to destructive assembly. Int J Biol Macromol 2018; 112:217-229. [DOI: 10.1016/j.ijbiomac.2018.01.099] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 01/04/2018] [Accepted: 01/14/2018] [Indexed: 12/20/2022]
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Donnarumma F, Emendato A, Leone S, Ercole C, D’errico G, Picone D. Salt Modulated Fibrillar Aggregation of the Sweet Protein MNEI in Aqueous Solution. J SOLUTION CHEM 2018; 47:939-49. [DOI: 10.1007/s10953-018-0764-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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34
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Biosa A, Sandrelli F, Beltramini M, Greggio E, Bubacco L, Bisaglia M. Recent findings on the physiological function of DJ-1: Beyond Parkinson's disease. Neurobiol Dis 2017; 108:65-72. [PMID: 28823929 DOI: 10.1016/j.nbd.2017.08.005] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 07/26/2017] [Accepted: 08/16/2017] [Indexed: 01/16/2023] Open
Abstract
Several mutations in the gene coding for DJ-1 have been associated with early onset forms of parkinsonism. In spite of the massive effort spent by the scientific community in understanding the physiological role of DJ-1, a consensus on what DJ-1 actually does within the cells has not been reached, with several diverse functions proposed. At present, the most accepted function for DJ-1 is a neuronal protective role against oxidative stress. However, how exactly this function is exerted by DJ-1 is not clear. In recent years, novel molecular mechanisms have been suggested that may account for the antioxidant properties of DJ-1. In this review, we critically analyse the experimental evidence, including some very recent findings, supporting the purported neuroprotective role of DJ-1 through different mechanisms linked to oxidative stress handling, as well as the relevance of these processes in the context of Parkinson's disease.
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Affiliation(s)
- Alice Biosa
- Molecular Physiology and Biophysics Unit, Department of Biology, University of Padova, 35131 Padova, Italy
| | - Federica Sandrelli
- Neurogenetics and Chronobiology Unit, Department of Biology, University of Padova, 35131 Padova, Italy
| | - Mariano Beltramini
- Molecular Physiology and Biophysics Unit, Department of Biology, University of Padova, 35131 Padova, Italy
| | - Elisa Greggio
- Molecular Physiology and Biophysics Unit, Department of Biology, University of Padova, 35131 Padova, Italy
| | - Luigi Bubacco
- Molecular Physiology and Biophysics Unit, Department of Biology, University of Padova, 35131 Padova, Italy
| | - Marco Bisaglia
- Molecular Physiology and Biophysics Unit, Department of Biology, University of Padova, 35131 Padova, Italy.
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35
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Abdullah K, Qais FA, Ahmad I, Naseem I. Inhibitory effect of vitamin B 3 against glycation and reactive oxygen species production in HSA: An in vitro approach. Arch Biochem Biophys 2017. [DOI: 10.1016/j.abb.2017.06.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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36
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Taghavi F, Habibi-rezaei M, Amani M, Saboury AA, Moosavi-movahedi AA. The status of glycation in protein aggregation. Int J Biol Macromol 2017; 100:67-74. [DOI: 10.1016/j.ijbiomac.2015.12.085] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 12/28/2015] [Indexed: 12/15/2022]
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Abstract
![]()
The
receptor for advanced glycation endproducts (RAGE) is an ubiquitous,
transmembrane, immunoglobulin-like receptor that exists in multiple
isoforms and binds to a diverse range of endogenous extracellular
ligands and intracellular effectors. Ligand binding at the extracellular
domain of RAGE initiates a complex intracellular signaling cascade,
resulting in the production of reactive oxygen species (ROS), immunoinflammatory
effects, cellular proliferation, or apoptosis with concomitant upregulation
of RAGE itself. To date, research has mainly focused on the correlation
between RAGE activity and pathological conditions, such as cancer,
diabetes, cardiovascular diseases, and neurodegeneration. Because
RAGE plays a role in many pathological disorders, it has become an
attractive target for the development of inhibitors at the extracellular
and intracellular domains. This review describes the role of endogenous
RAGE ligands/effectors in normo- and pathophysiological processes,
summarizes the current status of exogenous small-molecule inhibitors
of RAGE and concludes by identifying key strategies for future therapeutic
intervention.
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Affiliation(s)
- Salvatore Bongarzone
- Division of Imaging Sciences and Biomedical Engineering, King's College London, King's Health Partners , St. Thomas' Hospital, London, SE1 7EH, United Kingdom
| | - Vilius Savickas
- Division of Imaging Sciences and Biomedical Engineering, King's College London, King's Health Partners , St. Thomas' Hospital, London, SE1 7EH, United Kingdom
| | - Federico Luzi
- Division of Imaging Sciences and Biomedical Engineering, King's College London, King's Health Partners , St. Thomas' Hospital, London, SE1 7EH, United Kingdom
| | - Antony D Gee
- Division of Imaging Sciences and Biomedical Engineering, King's College London, King's Health Partners , St. Thomas' Hospital, London, SE1 7EH, United Kingdom
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38
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Mariño L, Maya-Aguirre CA, Pauwels K, Vilanova B, Ortega-Castro J, Frau J, Donoso J, Adrover M. Glycation of Lysozyme by Glycolaldehyde Provides New Mechanistic Insights in Diabetes-Related Protein Aggregation. ACS Chem Biol 2017; 12:1152-1162. [PMID: 28257177 DOI: 10.1021/acschembio.6b01103] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Glycation occurs in vivo as a result of the nonenzymatic reaction of carbohydrates (and/or their autoxidation products) with proteins, DNA, or lipids. Protein glycation causes loss-of-function and, consequently, the development of diabetic-related diseases. Glycation also boosts protein aggregation, which can be directly related with the higher prevalence of aggregating diseases in diabetic people. However, the molecular mechanism connecting glycation with aggregation still remains unclear. Previously we described mechanistically how glycation of hen egg-white lysozyme (HEWL) with ribose induced its aggregation. Here we address the question of whether the ribose-induced aggregation is a general process or it depends on the chemical nature of the glycating agent. Glycation of HEWL with glycolaldehyde occurs through two different scenarios depending on the HEWL concentration regime (both within the micromolar range). At low HEWL concentration, non-cross-linking fluorescent advanced glycation end-products (AGEs) are formed on Lys side chains, which do not change the protein structure but inhibit its enzymatic activity. These AGEs have little impact on HEWL surface hydrophobicity and, therefore, a negligible effect on its aggregation propensity. Upon increasing HEWL concentration, the glycation mechanism shifts toward the formation of intermolecular cross-links, which triggers a polymerization cascade involving the formation of insoluble spherical-like aggregates. These results notably differ with the aggregation-modulation mechanism of ribosylated HEWL directed by hydrophobic interactions. Additionally, their comparison constitutes the first experimental evidence showing that the mechanism underlying the aggregation of a glycated protein depends on the chemical nature of the glycating agent.
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Affiliation(s)
- Laura Mariño
- University Institute of Health Sciences (UNICS-IdisPa), Ctra. Valldemossa 79, E-07010, Palma de Mallorca, Spain
- Departament
de Química, Universitat de les Illes Balears, Ctra. Valldemossa
km 7.5, E-07122, Palma de Mallorca, Spain
| | - Carlos Andrés Maya-Aguirre
- Departament
de Química, Universitat de les Illes Balears, Ctra. Valldemossa
km 7.5, E-07122, Palma de Mallorca, Spain
| | - Kris Pauwels
- Structural
Biology Brussels, Vrije Universiteit Brussels, Pleinlaan 2, 1050 Brussels, Belgium
- VIB
Structural Biology Research Centre, Vlaams Instituut voor Biotechnologie, Pleinlaan 2, 1050 Brussels, Belgium
| | - Bartolomé Vilanova
- University Institute of Health Sciences (UNICS-IdisPa), Ctra. Valldemossa 79, E-07010, Palma de Mallorca, Spain
- Departament
de Química, Universitat de les Illes Balears, Ctra. Valldemossa
km 7.5, E-07122, Palma de Mallorca, Spain
| | - Joaquin Ortega-Castro
- University Institute of Health Sciences (UNICS-IdisPa), Ctra. Valldemossa 79, E-07010, Palma de Mallorca, Spain
- Departament
de Química, Universitat de les Illes Balears, Ctra. Valldemossa
km 7.5, E-07122, Palma de Mallorca, Spain
| | - Juan Frau
- University Institute of Health Sciences (UNICS-IdisPa), Ctra. Valldemossa 79, E-07010, Palma de Mallorca, Spain
- Departament
de Química, Universitat de les Illes Balears, Ctra. Valldemossa
km 7.5, E-07122, Palma de Mallorca, Spain
| | - Josefa Donoso
- University Institute of Health Sciences (UNICS-IdisPa), Ctra. Valldemossa 79, E-07010, Palma de Mallorca, Spain
- Departament
de Química, Universitat de les Illes Balears, Ctra. Valldemossa
km 7.5, E-07122, Palma de Mallorca, Spain
| | - Miquel Adrover
- University Institute of Health Sciences (UNICS-IdisPa), Ctra. Valldemossa 79, E-07010, Palma de Mallorca, Spain
- Departament
de Química, Universitat de les Illes Balears, Ctra. Valldemossa
km 7.5, E-07122, Palma de Mallorca, Spain
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Abstract
Glycation is an important protein modification that could potentially affect bioactivity and molecular stability, and glycation of therapeutic proteins such as monoclonal antibodies should be well characterized. Glycated protein could undergo further degradation into advance glycation end (AGE) products. Here, we review the root cause of glycation during the manufacturing, storage and in vivo circulation of therapeutic antibodies, and the current analytical methods used to detect and characterize glycation and AGEs, including boronate affinity chromatography, charge-based methods, liquid chromatography-mass spectrometry and colorimetric assay. The biological effects of therapeutic protein glycation and AGEs, which ranged from no affect to loss of activity, are also discussed.
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Affiliation(s)
- Bingchuan Wei
- a Protein Analytical Chemistry, Genentech , South San Francisco , CA , USA
| | - Kelsey Berning
- a Protein Analytical Chemistry, Genentech , South San Francisco , CA , USA
| | - Cynthia Quan
- a Protein Analytical Chemistry, Genentech , South San Francisco , CA , USA
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Prasanna G, Saraswathi N. Linolenic acid prevents early and advanced glycation end-products (AGEs) modification of albumin. Int J Biol Macromol 2017; 95:121-5. [DOI: 10.1016/j.ijbiomac.2016.11.035] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 07/08/2016] [Accepted: 11/10/2016] [Indexed: 02/01/2023]
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Sirangelo I, Vella FM, Irace G, Manco G, Iannuzzi C. Glycation in Demetalated Superoxide Dismutase 1 Prevents Amyloid Aggregation and Produces Cytotoxic Ages Adducts. Front Mol Biosci 2016; 3:55. [PMID: 27695694 PMCID: PMC5026054 DOI: 10.3389/fmolb.2016.00055] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 08/31/2016] [Indexed: 01/18/2023] Open
Abstract
Superoxide dismutase 1 (SOD1) has been implicated with familial amyotrophic lateral sclerosis (fALS) through accumulation of protein amyloid aggregates in motor neurons of patients. Amyloid aggregates and protein inclusions are a common pathological feature of many neurological disorders in which protein aggregation seems to be directly related to neurotoxicity. Although, extensive studies performed on the aggregation process of several amyloidogenic proteins in vitro allowed the identification of many physiological factors involved, the molecular mechanisms underlying the formation of amyloid aggregates in vivo and in pathological conditions are still poorly understood. Post-translational modifications are known to affect protein structure and function and, recently, much attention has been devoted to the role played by non-enzymatic glycation in stimulating amyloid aggregation and cellular toxicity. In particular, glycation seems to have a determining role both in sporadic and familial forms of ALS and SOD1 has been shown to be glycated in vivo The aim of this study was to investigate the role of glycation on the amyloid aggregation process of both wild-type SOD1 and its ALS-related mutant G93A. To this aim, the glycation kinetics of both native and demetalated SOD have been followed using two different glycating agents, i.e., D-ribose and methylglyoxal. The effect of glycation on the structure and the amyloid aggregation propensity of native and ApoSOD has been also investigated using a combination of biophysical and biochemical techniques. In addition, the effect of SOD glycated species on cellular toxicity and reactive oxygen species (ROS) production has been evaluated in different cellular models. The results provided by this study contribute to clarify the role of glycation in amyloid aggregation and suggest a direct implication of glycation in the pathology of fALS.
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Affiliation(s)
- Ivana Sirangelo
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples Naples, Italy
| | - Filomena M Vella
- Institute of Agro-environmental and Forest Biology, Italian National Research Council Naples, Italy
| | - Gaetano Irace
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples Naples, Italy
| | - Giuseppe Manco
- Institute of Protein Biochemistry, Italian National Research Council Naples, Italy
| | - Clara Iannuzzi
- Department of Biochemistry, Biophysics and General Pathology, Second University of NaplesNaples, Italy; Institute of Protein Biochemistry, Italian National Research CouncilNaples, Italy
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42
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Liu F, Teodorowicz M, Wichers HJ, van Boekel MAJS, Hettinga KA. Generation of Soluble Advanced Glycation End Products Receptor (sRAGE)-Binding Ligands during Extensive Heat Treatment of Whey Protein/Lactose Mixtures Is Dependent on Glycation and Aggregation. J Agric Food Chem 2016; 64:6477-6486. [PMID: 27460534 DOI: 10.1021/acs.jafc.6b02674] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Heating of protein- and sugar-containing materials is considered the primary factor affecting the formation of advanced glycation end products (AGEs). This study aimed to investigate the influence of heating conditions, digestion, and aggregation on the binding capacity of AGEs to the soluble AGE receptor (sRAGE). Samples consisting of mixtures of whey protein and lactose were heated at 130 °C. An in vitro infant digestion model was used to study the influence of heat treatment on the digestibility of whey proteins. The amount of sRAGE-binding ligands before and after digestion was measured by an ELISA-based sRAGE-binding assay. Water activity did not significantly affect the extent of digestibility of whey proteins dry heated at pH 5 (ranging from 3.3 ± 0.2 to 3.6 ± 0.1% for gastric digestion and from 53.5 ± 1.5 to 64.7 ± 1.1% for duodenal digestion), but there were differences in cleavage patterns of peptides among the samples heated at different pH values. Formation of sRAGE-binding ligands depended on the formation of aggregates and was limited in the samples heated at pH 5. Moreover, the sRAGE-binding activity of digested sample was changed by protease degradation and correlated with the digestibility of samples. In conclusion, generation of sRAGE-binding ligands during extensive heat treatment of whey protein/lactose mixtures is limited in acidic heating condition and dependent on glycation and aggregation.
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Affiliation(s)
- Fahui Liu
- Food Quality & Design Group, Wageningen University & Research Centre , 6700 EV Wageningen, The Netherlands
| | - Małgorzata Teodorowicz
- Cell Biology and Immunology Group, Wageningen University and Research Centre , 6708 WD Wageningen, The Netherlands
| | - Harry J Wichers
- Cell Biology and Immunology Group, Wageningen University and Research Centre , 6708 WD Wageningen, The Netherlands
- Food and Biobased Research, Wageningen University and Research Centre , 6700 AA Wageningen, The Netherlands
| | - Martinus A J S van Boekel
- Food Quality & Design Group, Wageningen University & Research Centre , 6700 EV Wageningen, The Netherlands
| | - Kasper A Hettinga
- Food Quality & Design Group, Wageningen University & Research Centre , 6700 EV Wageningen, The Netherlands
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Arfat MY, Arif Z, Chaturvedi SK, Moinuddin, Alam K. Peroxynitrite-induced structural perturbations in human IgG: A physicochemical study. Arch Biochem Biophys 2016; 603:72-80. [DOI: 10.1016/j.abb.2016.05.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2015] [Revised: 04/20/2016] [Accepted: 05/16/2016] [Indexed: 02/08/2023]
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Patil KK, Meshram RJ, Gacche RN. Effect of monohydroxylated flavonoids on glycation-induced lens opacity and protein aggregation. J Enzyme Inhib Med Chem 2016; 31:148-156. [DOI: 10.1080/14756366.2016.1180593] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Affiliation(s)
- Kapil K. Patil
- School of Life Sciences, Swami Ramanand Teerth Marathwada University, Nanded, Maharashtra, India
| | - Rohan J. Meshram
- School of Life Sciences, Swami Ramanand Teerth Marathwada University, Nanded, Maharashtra, India
| | - Rajesh N. Gacche
- School of Life Sciences, Swami Ramanand Teerth Marathwada University, Nanded, Maharashtra, India
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Patil KK, Meshram RJ, Dhole NA, Gacche RN. Role of dietary flavonoids in amelioration of sugar induced cataractogenesis. Arch Biochem Biophys 2016; 593:1-11. [DOI: 10.1016/j.abb.2016.01.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 01/21/2016] [Accepted: 01/27/2016] [Indexed: 01/28/2023]
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Huang YT, Liao HF, Wang SL, Lin SY. Glycation and secondary conformational changes of human serum albumin: study of the FTIR spectroscopic curve-fitting technique. AIMS Biophysics 2016. [DOI: 10.3934/biophy.2016.2.247] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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Iannuzzi C, Borriello M, Carafa V, Altucci L, Vitiello M, Balestrieri ML, Ricci G, Irace G, Sirangelo I. D-ribose-glycation of insulin prevents amyloid aggregation and produces cytotoxic adducts. Biochim Biophys Acta Mol Basis Dis 2015; 1862:93-104. [PMID: 26519138 DOI: 10.1016/j.bbadis.2015.10.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 10/09/2015] [Accepted: 10/17/2015] [Indexed: 12/25/2022]
Affiliation(s)
- Clara Iannuzzi
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Margherita Borriello
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Vincenzo Carafa
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Lucia Altucci
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy; Institute of Genetics and Biophysics Adriano Buzzati-Traverso, IGB-CNR, Naples, Italy
| | - Milena Vitiello
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Maria Luisa Balestrieri
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Giulia Ricci
- Department of Experimental Medicine, Second University of Naples, Naples, Italy
| | - Gaetano Irace
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Ivana Sirangelo
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy.
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Sabokdast M, Habibi-Rezaei M, Moosavi-Movahedi AA, Ferdousi M, Azimzadeh-Irani E, Poursasan N. Protection by beta-Hydroxybutyric acid against insulin glycation, lipid peroxidation and microglial cell apoptosis. Daru 2015; 23:42. [PMID: 26311627 PMCID: PMC4551523 DOI: 10.1186/s40199-015-0126-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2015] [Accepted: 08/18/2015] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Diabetes mellitus is characterized jointly by hyperglycemia and hyperinsulinemia that make insulin more prone to be glycated and evolve insulin advanced glycation end products (Insulin- AGE). Here, we report the effect of beta-hydroxy butyrate (BHB) (the predominant ketone body) on the formation of insulin-AGE, insulin glycation derived liposomal lipid peroxidation and insulin-AGE toxicity in microglial cells. METHODS The inhibitory effect of BHB was monitored as a result of insulin incubation in the presence of glucose or fructose using AGE-dependent fluorescence, Tyr fluorescence as well as anilinonaphthalenesulfonate (ANS) andthioflavin T (ThT) binding, and circular dichroism (CD) investigations. To study lipid peroxidation induced by insulin glycation, thiobarbituric acid (TBA) assay and thiobarbituric acid reactive substance (TBARS) monitoring were used. The effect of insulin-AGE on microglial viability was investigated by 3-(4, 5 dimethylthiazol-2-yl)-2, 5-diphenyltetrazoliumbromide (MTT) cell assay and Annexin V/propidium iodide (PI) staining. RESULTS Here we are reporting the inhibitory effect of BHB on insulin glycation and generation of insulin-AGE as a possible explanation for insulin resistance. Moreover, the protective effect of BHB on consequential glycation derived liposomal lipid peroxidation as a causative event in microglial apoptosis is reported. CONCLUSION The reduced insulin fibril formation, structural inertia to glycation involved conformational changes, anti-lipid peroxidation effect, and increasing microglia viability indicated the protective effect of BHB that disclose insight on the possible preventive effect of BHB on Alzheimer's disease.
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Affiliation(s)
- Manijheh Sabokdast
- School of Biology, College of Science, University of Tehran, Tehran, Iran.
- Present address: Department of agronomy, and plant breeding, College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran.
| | - Mehran Habibi-Rezaei
- School of Biology, College of Science, University of Tehran, Tehran, Iran.
- Nano-Biomedicine Center of Excellence, Nanoscience and Nanotechnology Research Center, University of Tehran, Tehran, Iran.
| | - Ali Akbar Moosavi-Movahedi
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran.
- Center of Excellence in Biothermodynamics, University of Tehran, Tehran, Iran.
| | - Maryam Ferdousi
- School of Biology, College of Science, University of Tehran, Tehran, Iran.
| | | | - Najmeh Poursasan
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran.
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Mariño L, Pauwels K, Casasnovas R, Sanchis P, Vilanova B, Muñoz F, Donoso J, Adrover M. Ortho-methylated 3-hydroxypyridines hinder hen egg-white lysozyme fibrillogenesis. Sci Rep 2015; 5:12052. [PMID: 26169912 PMCID: PMC4500996 DOI: 10.1038/srep12052] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 06/16/2015] [Indexed: 12/15/2022] Open
Abstract
Protein aggregation with the concomitant formation of amyloid fibrils is related to several neurodegenerative diseases, but also to non-neuropathic amyloidogenic diseases and non-neurophatic systemic amyloidosis. Lysozyme is the protein involved in the latter, and it is widely used as a model system to study the mechanisms underlying fibril formation and its inhibition. Several phenolic compounds have been reported as inhibitors of fibril formation. However, the anti-aggregating capacity of other heteroaromatic compounds has not been studied in any depth. We have screened the capacity of eleven different hydroxypyridines to affect the acid-induced fibrillization of hen lysozyme. Although most of the tested hydroxypyridines alter the fibrillation kinetics of HEWL, only 3-hydroxy-2-methylpyridine, 3-hydroxy-6-methylpyridine and 3-hydroxy-2,6-dimethylpyridine completely abolish fibril formation. Different biophysical techniques and several theoretical approaches are combined to elucidate their mechanism of action. O-methylated 3-hydroxypyridines bind non-cooperatively to two distinct but amyloidogenic regions of monomeric lysozyme. This stabilises the protein structure, as evidenced by enhanced thermal stability, and results in the inhibition of the conformational transition that precedes fibril assembly. Our results point to o-methylated 3-hydroxypyridines as a promising molecular scaffold for the future development of novel fibrillization inhibitors.
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Affiliation(s)
- Laura Mariño
- Institut Universitari d’Investigació en Ciències de la Salut (IUNICS). Departament de Química, Universitat de les Illes Balears, Ctra. Valldemossa km 7.5, E-07122 Palma de Mallorca, Spain
| | - Kris Pauwels
- Structural Biology Brussels, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussel, Belgium
- VIB Structural Biology Research Centre, Vlaams Instituut voor Biotechnologie, Pleinlaan 2, 1050 Brussel, Belgium
| | - Rodrigo Casasnovas
- Institut Universitari d’Investigació en Ciències de la Salut (IUNICS). Departament de Química, Universitat de les Illes Balears, Ctra. Valldemossa km 7.5, E-07122 Palma de Mallorca, Spain
| | - Pilar Sanchis
- Institut Universitari d’Investigació en Ciències de la Salut (IUNICS). Departament de Química, Universitat de les Illes Balears, Ctra. Valldemossa km 7.5, E-07122 Palma de Mallorca, Spain
| | - Bartolomé Vilanova
- Institut Universitari d’Investigació en Ciències de la Salut (IUNICS). Departament de Química, Universitat de les Illes Balears, Ctra. Valldemossa km 7.5, E-07122 Palma de Mallorca, Spain
| | - Francisco Muñoz
- Institut Universitari d’Investigació en Ciències de la Salut (IUNICS). Departament de Química, Universitat de les Illes Balears, Ctra. Valldemossa km 7.5, E-07122 Palma de Mallorca, Spain
| | - Josefa Donoso
- Institut Universitari d’Investigació en Ciències de la Salut (IUNICS). Departament de Química, Universitat de les Illes Balears, Ctra. Valldemossa km 7.5, E-07122 Palma de Mallorca, Spain
| | - Miquel Adrover
- Institut Universitari d’Investigació en Ciències de la Salut (IUNICS). Departament de Química, Universitat de les Illes Balears, Ctra. Valldemossa km 7.5, E-07122 Palma de Mallorca, Spain
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