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Gonzalez-Oñate A, Alí-Torres J, Quevedo R. The role of non-covalent interactions in 4-hydroxybenzylamine macrocyclisation: computational and synthetic evidence. RSC Adv 2024; 14:3691-3697. [PMID: 38268540 PMCID: PMC10805078 DOI: 10.1039/d3ra08508b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 01/16/2024] [Indexed: 01/26/2024] Open
Abstract
4-hydroxybenzylamine's intermolecular interactions and their possible influence on the course of 4-hydroxybenzylamine's reaction with formaldehyde are analysed in this article. Computational calculations established that 4-hydroxybenzylamine forms dimers in solution by O-H⋯N hydrogen bonds; such dimers are stabilised by π-stacking interactions. These cyclic dimers' formation led to obtaining a 12-atom azacyclophane through 4-hydroxybenzylamine's reaction with formaldehyde.
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Affiliation(s)
- Andrés Gonzalez-Oñate
- Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia Sede Bogotá, Carrera 30 No. 45-03 Bogotá Colombia
| | - Jorge Alí-Torres
- Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia Sede Bogotá, Carrera 30 No. 45-03 Bogotá Colombia
| | - Rodolfo Quevedo
- Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia Sede Bogotá, Carrera 30 No. 45-03 Bogotá Colombia
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2
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Alvarez-Ricardo Y, Meza-Morales W, Obregón-Mendoza MA, Toscano RA, Núñez-Zarur F, Germán-Acacio JM, Puentes-Díaz N, Alí-Torres J, Arenaza-Corona A, Ramírez-Apan MT, Morales-Morales D, Enríquez RG. Synthesis, characterization, theoretical studies and antioxidant and cytotoxic evaluation of a series of Tetrahydrocurcumin (THC)-benzylated derivatives. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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3
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Mallick T, Karmakar A, Mukhuty A, Fouzder C, Mandal J, Mondal S, Pramanik A, Kundu R, Begum NA. Exploring the Propensities of Fluorescent Carbazole Analogs toward the Inhibition of Amyloid Aggregation in Type 2 Diabetes: An Experimental and Theoretical Endeavor. J Phys Chem B 2021; 125:10481-10493. [PMID: 34498871 DOI: 10.1021/acs.jpcb.1c06161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Amyloid aggregation is a pathological trait observed in many incurable and fatal neurodegenerative and metabolic diseases associated with misfolding and self-assembly of various proteins. Noncovalent interactions between these structural motifs and small molecules can, however, prevent this aggregation. Herein, five structurally different synthetic (Cz1-Cz4) and naturally occurring (Cz5, mahanimbine) fluorescent carbazole analogs are explored for their comparative amyloid aggregation inhibitory activities. Cz3 inhibited the amyloid deposition on the pancreatic β-cells of diabetic mice. Moreover, Cz3 and Cz5 also showed efficacy as the fluorescent cell (MIN6) imaging agents. Further structural modifications of these carbazoles may lead to development of low-cost and non-toxic therapeutic agents for Type 2 diabetes and other amyloidosis-related diseases.
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Affiliation(s)
- Tamanna Mallick
- Department of Chemistry, Visva-Bharati (Central University), Santiniketan 731235, WB, India
| | - Abhijit Karmakar
- Department of Chemistry, Visva-Bharati (Central University), Santiniketan 731235, WB, India
| | - Alpana Mukhuty
- Department of Zoology, Visva-Bharati (Central University), Santiniketan 731235, WB, India
| | - Chandrani Fouzder
- Department of Zoology, Visva-Bharati (Central University), Santiniketan 731235, WB, India
| | - Jishu Mandal
- Biophysical Laboratory, Indian Institute of Chemical Biology, Kolkata, WB 700032, India
| | - Samiran Mondal
- Department of Chemistry, Rammohan College, Kolkata, WB 700009, India
| | - Anup Pramanik
- Department of Chemistry, Sidho-Kanho-Birsha University, Purulia, WB 723104, India
| | - Rakesh Kundu
- Department of Zoology, Visva-Bharati (Central University), Santiniketan 731235, WB, India
| | - Naznin Ara Begum
- Department of Chemistry, Visva-Bharati (Central University), Santiniketan 731235, WB, India
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Pal AK, Bhattacharyya K, Datta A. Polymorphism Dependent 9-Phosphoanthracene Derivative Exhibiting Thermally Activated Delayed Fluorescence: A Computational Investigation. J Phys Chem A 2020; 124:11025-11037. [PMID: 33332131 DOI: 10.1021/acs.jpca.0c10203] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Polymorphs of anthracene derivatives exhibit diverse photophysical properties that can help to develop efficient organic-based photovoltaic devices. 10-Anthryl-9-phosphoanthracene (10-APA) shows different photophysical behaviors for the solid state due to its variety in crystalline arrangement. Herein, we investigate the ground and excited-state properties of the monomer and two different polymorphs of 10-APA from first-principles. Calculations reveal that strong spin-orbit coupling (SOC) between first excited singlet state (S1) and triplet manifolds at their S1-optimized geometries enabling the reverse intersystem crossing (RISC). The electron-vibration coupling (Huang-Rhys factor) in the excited state is the most relevant factor here. For both ISC and RISC, a similarity in Huang-Rhys factors for the molecular vibration along the π···π stacking at low-frequency region makes the rates effective. On the other side, the nonvanishing vibronic relaxation modes provide a relatively slower RISC rate in the red crystal. However, for the red crystal, small reorganization energy (λ) and large Huang-Rhys factor toward S1 → S0 conversion reduce nonradiative decay, leading to a prompt fluorescence. As the feasibility of S1 ↔ T1 conversion increases in the yellow dimer, it allows a delay in fluorescence emission, leading to thermally activated delayed fluorescence (TADF).
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Affiliation(s)
- Arun K Pal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, WB, India
| | - Kalishankar Bhattacharyya
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, WB, India
| | - Ayan Datta
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, WB, India
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Gong L, Zhang X, Ge K, Yin Y, Machuki JO, Yang Y, Shi H, Geng D, Gao F. Carbon nitride-based nanocaptor: An intelligent nanosystem with metal ions chelating effect for enhanced magnetic targeting phototherapy of Alzheimer's disease. Biomaterials 2020; 267:120483. [PMID: 33129186 DOI: 10.1016/j.biomaterials.2020.120483] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 09/29/2020] [Accepted: 10/20/2020] [Indexed: 02/07/2023]
Abstract
Metal ions imbalance, a well-established pathologic feature of alzheimer's disease (AD), ultimately results in the deposition of amyloid-β peptide (Aβ) proteins and Aβ-induced neurotoxicity. Herein, to overcome these hurdles, an intelligent Aβ nanocaptor with the capacity to chelate metal ions and targeted therapy is developed by anchoring carbon nitride (C3N4) nanodots to Fe3O4@mesoporous silica nanospheres, and decorated with benzothiazole aniline (BTA) (designated as B-FeCN). The C3N4 nanodots could effectively capture superfluous Cu2+ to suppress the formation of Cu2+-Aβ complex thereby eliminating Aβ aggregation. Simultaneously, the nanocaptor enables local low-temperature hyperthermia to promote the dissolution of preformed fiber precipitates, therefore, maximizing the therapeutic benefits. Owing to its favorable photothermal effect, the blood-brain barrier (BBB) permeability of the nanocaptor is noticeably ameliorated upon laser illumination, which conquers the limitations associated with traditional anti-AD drugs, as evidenced by in vivo and in vitro studies. Besides, leveraging on the magnetic properties of Fe3O4 core, the nanocaptor is magnetized to access to the targeted Aβ regions under extrinsic magnetic field. BTA conjugation, which specifically binds to the β2 position of the Aβ fibers, executes specific targeting at Aβ plaques, and synchronously endows the BTA-modified nanocaptor with fluorescent imaging property for sensitively detecting Aβ aggregates. In view of these superiorities, nanocaptors combine metallostasis restoration and Aβ targeted therapy can surmount the interference of copper ions, enhance BBB permeability and protect cells against Aβ-induced neurotoxicity, which provides new avenues for developing neuroprotective nanosystems for the treatment of alzheimer's disease.
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Affiliation(s)
- Ling Gong
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Jiangsu, 221002, PR China; Department of Neurology, Affiliated Hospital of Xuzhou Medical University, Jiangsu, 221002, PR China
| | - Xing Zhang
- Department of Trauma and Reconstructive Surgery, RWTH Aachen University Hospital, Aachen, 52074, Germany
| | - Kezhen Ge
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Jiangsu, 221002, PR China; Department of Neurology, Affiliated Hospital of Xuzhou Medical University, Jiangsu, 221002, PR China
| | - Yiming Yin
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Jiangsu, 221002, PR China; Department of Neurology, Affiliated Hospital of Xuzhou Medical University, Jiangsu, 221002, PR China
| | - Jeremiah Ong'achwa Machuki
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Jiangsu, 221002, PR China
| | - Yun Yang
- Nanomaterials and Chemistry Key Laboratory, Wenzhou University, Zhejiang, 325027, PR China
| | - Hengliang Shi
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Jiangsu, 221002, PR China
| | - Deqin Geng
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Jiangsu, 221002, PR China; Department of Neurology, Affiliated Hospital of Xuzhou Medical University, Jiangsu, 221002, PR China.
| | - Fenglei Gao
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Jiangsu, 221002, PR China.
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Li Y, Du Z, Liu X, Ma M, Yu D, Lu Y, Ren J, Qu X. Near-Infrared Activated Black Phosphorus as a Nontoxic Photo-Oxidant for Alzheimer's Amyloid-β Peptide. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1901116. [PMID: 31069962 DOI: 10.1002/smll.201901116] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 04/01/2019] [Indexed: 05/28/2023]
Abstract
The inhibition of amyloid-β (Aβ) aggregation by photo-oxygenation has become an effective way of treating Alzheimer's disease (AD). New near-infrared (NIR) activated treatment agents, which not only possess high photo-oxygenation efficiency, but also show low biotoxicity, are urgently needed. Herein, for the first time, it is demonstrated that NIR activated black phosphorus (BP) could serve as an effective nontoxic photo-oxidant for amyloid-β peptide in vitro and in vivo. The nanoplatform BP@BTA (BTA: one of thioflavin-T derivatives) possesses high affinity to the Aβ peptide due to specific amyloid selectivity of BTA. Importantly, under NIR light, BP@BTA can significantly generate a high quantum yield of singlet oxygen (1 O2 ) to oxygenate Aβ, thereby resulting in inhibiting the aggregation and attenuating Aβ-induced cytotoxicity. In addition, BP could finally degrade into nontoxic phosphate, which guarantees the biosafety. Using transgenic Caenorhabditis elegans CL2006 as AD model, the results demonstrate that the 1 O2 -generation system could dramatically promote life-span extension of CL2006 strain by decreasing the neurotoxicity of Aβ.
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Affiliation(s)
- Yang Li
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
| | - Zhi Du
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
| | - Xinping Liu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
| | - Mengmeng Ma
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
| | - Dongqin Yu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
| | - Yao Lu
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, Jilin, 130012, China
| | - Jinsong Ren
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
| | - Xiaogang Qu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
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Azam F, Alabdullah NH, Ehmedat HM, Abulifa AR, Taban I, Upadhyayula S. NSAIDs as potential treatment option for preventing amyloid β toxicity in Alzheimer's disease: an investigation by docking, molecular dynamics, and DFT studies. J Biomol Struct Dyn 2017; 36:2099-2117. [PMID: 28571516 DOI: 10.1080/07391102.2017.1338164] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Aggregation of amyloid beta (Aβ) protein considered as one of contributors in development of Alzheimer's disease (AD). Several investigations have identified the importance of non-steroidal anti-inflammatory drugs (NSAIDs) as Aβ aggregation inhibitors. Here, we have examined the binding interactions of 24 NSAIDs belonging to eight different classes, with Aβ fibrils by exploiting docking and molecular dynamics studies. Minimum energy conformation of the docked NSAIDs were further optimized by density functional theory (DFT) employing Becke's three-parameter hybrid model, Lee-Yang-Parr (B3LYP) correlation functional method. DFT-based global reactivity descriptors, such as electron affinity, hardness, softness, chemical potential, electronegativity, and electrophilicity index were calculated to inspect the expediency of these descriptors for understanding the reactive nature and sites of the molecules. Few selected NSAID-Aβ fibrils complexes were subjected to molecular dynamics simulation to illustrate the stability of these complexes and the most prominent interactions during the simulated trajectory. All of the NSAIDs exhibited potential activity against Aβ fibrils in terms of predicted binding affinity. Sulindac was found to be the most active compound underscoring the contribution of indene methylene substitution, whereas acetaminophen was observed as least active NSAID. General structural requirements for interaction of NSAIDs with Aβ fibril include: aryl/heteroaryl aromatic moiety connected through a linker of 1-2 atoms to a distal aromatic group. Considering these structural requirements and electronic features, new potent agents can be designed and developed as potential Aβ fibril inhibitors for the treatment of AD.
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Affiliation(s)
- Faizul Azam
- a Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Misurata University , Misurata , Libya
| | - Nada Hussin Alabdullah
- a Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Misurata University , Misurata , Libya
| | - Hadeel Mohammed Ehmedat
- a Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Misurata University , Misurata , Libya
| | - Abdullah Ramadan Abulifa
- a Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Misurata University , Misurata , Libya
| | - Ismail Taban
- b School of Pharmacy and Pharmaceutical Sciences , Cardiff University , Cardiff , UK
| | - Sreedevi Upadhyayula
- c Department of Chemical Engineering , Indian Institute of Technology , New Delhi , India
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Mukherjee P, Rafiq S, Sen P. Dual relaxation channel in thioflavin-T: An ultrafast spectroscopic study. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2016.05.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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9
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Telpoukhovskaia MA, Cawthray JF, Rodríguez-Rodríguez C, Scott LE, Page BD, Patrick BO, Orvig C. 3-Hydroxy-4-pyridinone derivatives designed for fluorescence studies to determine interaction with amyloid protein as well as cell permeability. Bioorg Med Chem Lett 2015; 25:3654-7. [DOI: 10.1016/j.bmcl.2015.06.059] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Revised: 06/12/2015] [Accepted: 06/15/2015] [Indexed: 11/26/2022]
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10
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Choi TS, Lee JW, Jin KS, Kim HI. Amyloid fibrillation of insulin under water-limited conditions. Biophys J 2015; 107:1939-1949. [PMID: 25418175 DOI: 10.1016/j.bpj.2014.09.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 08/01/2014] [Accepted: 09/10/2014] [Indexed: 02/08/2023] Open
Abstract
Amyloid fibrillation in water-organic mixtures has been widely studied to understand the effect of protein-solvent interactions on the fibrillation process. In this study, we monitored insulin fibrillation in formamide and its methyl derivatives (formamide, N-methyl formamide, N,N-dimethyl formamide) in the presence and absence of water. These model solvent systems mimic the cellular environment by providing denaturing conditions and a hydrophobic environment with limited water content. Thioflavin T (ThT) assay revealed that binary mixtures of water with formamide and its methyl derivatives enhanced fibrillation rates and ?-sheet abundance, whereas organic solvents suppressed insulin fibrillation. We utilized solution small-angle x-ray scattering (SAXS) and differential scanning calorimetry (DSC) to investigate the correlation between protein-solvent interactions and insulin fibrillation. SAXS experiments combined with simulated annealing of the protein indicated that the degree of denaturation of the hydrophobic core region at residues B11-B17 determines the fibrillation rate. In addition, DSC experiments suggested a crucial role of hydrophobic interactions in the fibrillation process. These results imply that an environment with limited water, which imitates a lipid membrane system, accelerates protein denaturation and the formation of intermolecular hydrophobic interactions during amyloid fibrillation.
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Affiliation(s)
- Tae Su Choi
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
| | - Jong Wha Lee
- Pohang Accelerator Laboratory, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
| | - Kyeong Sik Jin
- Division of Advanced Materials Science, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
| | - Hugh I Kim
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea; Division of Advanced Materials Science, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea.
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Rodríguez-Rodríguez C, Telpoukhovskaia MA, Alí-Torres J, Rodríguez-Santiago L, Manso Y, Bailey GA, Hidalgo J, Sodupe M, Orvig C. Thioflavin-based molecular probes for application in Alzheimer's disease: from in silico to in vitro models. Metallomics 2014; 7:83-92. [PMID: 25325557 DOI: 10.1039/c4mt00167b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Alzheimer's disease (AD) is a neurological disease of confusing causation with no cure or prevention available. The definitive diagnosis is made postmortem, in part through the presence of amyloid-beta plaques in the brain tissue, which can be done with the small molecule thioflavin-T (ThT). Plaques are also found to contain elevated amounts of metal ions Cu(ii) and Zn(ii) that contribute to the neurotoxicity of amyloid-beta (Aβ). In this paper, we report in silico, in vitro, and ex vivo studies with ThT-derived metal binders 2-(2-hydroxyphenyl)benzoxazole (HBX), 2-(2-hydroxyphenyl)benzothiazole (HBT) and their respective iodinated counterparts, HBXI and HBTI. They exhibit low cytotoxicity in a neuronal cell line, potential blood-brain barrier penetration, and interaction with Aβ fibrils from senile plaques present in human and transgenic mice AD models. Molecular modelling studies have also been undertaken to understand the prospective ligand-Aβ complexes as well as to rationalize the experimental findings. Overall, our studies demonstrate that HBX, HBT, HBXI, and HBTI are excellent agents for future use in in vivo models of AD, as they show in vitro efficacy and biological compatibility. In addition to this, we present the glycosylated form of HBX (GBX), which has been prepared to take advantage of the benefits of the prodrug approach. Overall, the in vitro and ex vivo assays presented in this work validate the use of the proposed ThT-based drug candidate series as chemical tools for further in vivo development.
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Affiliation(s)
- C Rodríguez-Rodríguez
- Medicinal Inorganic Chemistry Group, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada.
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Lee Y, Kim YL, Kim MH, Lee M. Influence of matrix rigidity on the internal twisting of electronically excited thioflavin T in polymer nanostructures. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.10.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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