101
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Nath AK, Dey SG. Simultaneous Binding of Heme and Cu to Amyloid β Peptides: Active Site and Reactivities. Dalton Trans 2022; 51:4986-4999. [DOI: 10.1039/d2dt00162d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Amyloid imbalance and Aβ plaque formation are key histopathological features of Alzheimer’s disease (AD). These amyloid plaques observed in post-mortem AD brains have been found to contain increased levels of...
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102
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Mitkevich VA, Barykin EP, Eremina S, Pani B, Katkova-Zhukotskaya O, Polshakov VI, Adzhubei AA, Kozin SA, Mironov AS, Makarov AA, Nudler E. Zn-dependent β-amyloid Aggregation and its Reversal by the Tetrapeptide HAEE. Aging Dis 2022; 14:309-318. [PMID: 37008059 PMCID: PMC10017155 DOI: 10.14336/ad.2022.0827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 08/27/2022] [Indexed: 11/18/2022] Open
Abstract
The pathogenesis of Alzheimer's disease (AD) is associated with the formation of cerebral amyloid plaques, the main components of which are the modified Aβ molecules as well as the metal ions. Aβ isomerized at Asp7 residue (isoD7-Aβ) is the most abundant isoform in amyloid plaques. We hypothesized that the pathogenic effect of isoD7-Aβ is due to the formation of zinc-dependent oligomers, and that this interaction can be disrupted by the rationally designed tetrapeptide (HAEE). Here, we utilized surface plasmon resonance, nuclear magnetic resonance, and molecular dynamics simulation to demonstrate Zn2+-dependent oligomerization of isoD7-Aβ and the formation of a stable isoD7-Aβ:Zn2+:HAEE complex incapable of forming oligomers. To demonstrate the physiological importance of zinc-dependent isoD7-Aβ oligomerization and the ability of HAEE to interfere with this process at the organismal level, we employed transgenic nematodes overexpressing human Aβ. We show that the presence of isoD7-Aβ in the medium triggers extensive amyloidosis that occurs in a Zn2+-dependent manner, enhances paralysis, and shortens the animals' lifespan. Exogenous HAEE completely reverses these pathological effects of isoD7-Aβ. We conclude that the synergistic action of isoD7-Aβ and Zn2+ promotes Aβ aggregation and that the selected small molecules capable of interrupting this process, such as HAEE, can potentially serve as anti-amyloid therapeutics.
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Affiliation(s)
- Vladimir A Mitkevich
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia.
| | - Evgeny P Barykin
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia.
| | - Svetlana Eremina
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia.
| | - Bibhusita Pani
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, USA.
| | | | - Vladimir I Polshakov
- Faculty of Fundamental Medicine, M.V. Lomonosov Moscow State University, Moscow, Russia.
| | - Alexei A Adzhubei
- Washington University School of Medicine and Health Sciences, Washington, DC, USA.
| | - Sergey A Kozin
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia.
| | - Alexander S Mironov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia.
| | - Alexander A Makarov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia.
| | - Evgeny Nudler
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, USA.
- Howard Hughes Medical Institute, New York University Grossman School of Medicine, New York, USA.
- Correspondence should be addressed to: Dr. Evgeny Nudler, Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY 10016, USA. .
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103
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Debnath R, Bhowmick R, Ghosh P, Biswas S, Koner S. Selective luminescent sensing of metal ions and nitroaromatics over a porous mixed-linker cadmium( ii) based metal–organic framework. NEW J CHEM 2022. [DOI: 10.1039/d1nj04025a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A potential luminescent sensor based on porous metal organic framework for the detection of metal ions (Al3+, Fe3+ or Cr3+) and nitro-explosive, 2,4,6-tri-nitrophenol has been discovered. MOF is capable of detecting aqueous phase analyte through luminescent sensing.
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Affiliation(s)
- Rakesh Debnath
- Department of Chemistry, Jadavpur University, 188, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Rahul Bhowmick
- Department of Chemistry, Jadavpur University, 188, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Pameli Ghosh
- Department of Chemistry, Jadavpur University, 188, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Saptarshi Biswas
- Department of Chemistry, Katwa College, Katwa, West Bengal, 713130, India
| | - Subratanath Koner
- Department of Chemistry, Jadavpur University, 188, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
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104
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Liu J, Zheng L, Wei X, Wang B, Chen H, Chen M, Wang M, Feng W, Wang J. Quantitative imaging of trace elements in brain sections of Alzheimer’s disease mice with laser ablation inductively coupled plasma-mass spectrometry. Microchem J 2022. [DOI: 10.1016/j.microc.2021.106912] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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105
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Ye Z, Yan ZJ, Zhang C, Hou JL, Yue S, Xiao L. Charged Tubular Supramolecule Boosting Multivalent Interactions for the Drastic Suppression of Aβ Fibrillation. NANO LETTERS 2021; 21:10494-10500. [PMID: 34855401 DOI: 10.1021/acs.nanolett.1c04007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Anti-Aβ therapy has dominated clinical trials for the prevention and treatment of Alzheimer's disease (AD). However, suppressing Aβ aggregation and disintegrating mature fibrils simultaneously remains a great challenge. In this work, we developed a new strategy using a charged tubular supramolecule (CTS) with pillar[5]arene as the backbone and modifying amino and carboxyl groups at the tubular terminals (noted as CTS-A, CTS-A/C, and CTS-C, respectively) to suppress Aβ fibrillation for the first time. According to the spectroscopic and microscopic characterizations, Aβ40 fibrillation can be efficiently suppressed by CTS-A in a very low inhibitor:peptide (I:P) molar ratio (1:10). A greatly alleviated cytotoxic effect of Aβ peptides after the inhibition or disaggregation process is further disclosed. The well-organized supramolecular structure drives multivalent interaction and gains enhanced efficiency on amyloid fibrillar modulation. These results open a new path for the design of supramolecules in the application of AD treatment.
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Affiliation(s)
- Zhongju Ye
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zhao-Jun Yan
- Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Chenhong Zhang
- School of Medicine, Nankai University, Tianjin 300071, China
| | - Jun-Li Hou
- Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Shijing Yue
- School of Medicine, Nankai University, Tianjin 300071, China
| | - Lehui Xiao
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin 300071, China
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106
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Planeta Kepp K. Bioinorganic Chemistry of Zinc in Relation to the Immune System. Chembiochem 2021; 23:e202100554. [PMID: 34889510 DOI: 10.1002/cbic.202100554] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 12/09/2021] [Indexed: 01/18/2023]
Abstract
Zinc is well-known to have a central role in human inflammation and immunity and is itself an anti-inflammatory and antiviral agent. Despite its massively documented role in such processes, the underlying chemistry of zinc in relation to specific proteins and pathways of the immune system has not received much focus. This short review provides an overview of this topic, with emphasis on the structures of key proteins, zinc coordination chemistry, and probable mechanisms involved in zinc-based immunity, with some focus points for future chemical and biological research.
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Affiliation(s)
- Kasper Planeta Kepp
- DTU Chemistry, Technical University of Denmark, Building 206, 2800, Kongens Lyngby, Denmark
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107
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Xie X, Liu G, Niu Y, Xu C, Li Y, Zhang J, Jiao X, Wang X, Tang B. Dual-Channel Imaging of Amyloid-β Plaques and Peroxynitrite To Illuminate Their Correlations in Alzheimer's Disease Using a Unimolecular Two-Photon Fluorescent Probe. Anal Chem 2021; 93:15088-15095. [PMID: 34729977 DOI: 10.1021/acs.analchem.1c03334] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Alzheimer's disease (AD) involves multiple pathological factors that mutually cooperate and closely contact to form interaction networks for jointly promoting the AD progression. Therefore, the comonitoring of different factors is particularly valuable for elucidating their level dynamics and complex interactions. However, such significant investigations remain a major challenge due to the lack of unimolecular fluorescent probes capable of simultaneous and discriminative visualization of multiple targets. To address this concern, as proof of principle, we rationally designed a unimolecular fluorescent probe to discriminate and simultaneously profile amyloid-β (Aβ) plaques and peroxynitrite (ONOO-), which are both the pronounced AD pathological factors. Herein, a novel ONOO- reaction trigger was installed onto an Aβ plaque binding fluorophore to generate a dual functional fluorescent probe, displaying completely separate spectral responses to Aβ plaques and ONOO- with high selectivity and sensitivity. With this probe, for the first time, we comonitored the distribution and variation of Aβ plaques and ONOO- through two independent fluorescence channels, demonstrating their close apposition and tight correlation during AD course in live cell and mouse models through two-photon imaging mode. Notably, Aβ aggregates induce the neuronal ONOO- generation, which conversely facilitates Aβ aggregation. The two critical events, ONOO- stress and Aβ aggregation, mutually amplify each other through positive feedback mechanisms and jointly promote the AD onset and progression. Furthermore, by coimaging of the level dynamics of Aβ plaques and ONOO-, we found that the cerebral ONOO- is a potential biomarker, which emerges earlier than Aβ plaques in transgenic mouse models. Overall, the dual-channel responsive performance renders this probe as a powerful imaging tool to decipher Aβ plaque-ONOO- interactions, which will facilitate AD-associated molecular pathogenesis elucidation and multitarget drug discovery.
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Affiliation(s)
- Xilei Xie
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Shandong Normal University, Jinan 250014, P. R. China
| | - Guangzhao Liu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Shandong Normal University, Jinan 250014, P. R. China
| | - Yaxin Niu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Shandong Normal University, Jinan 250014, P. R. China
| | - Chenghui Xu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Shandong Normal University, Jinan 250014, P. R. China
| | - Yong Li
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Shandong Normal University, Jinan 250014, P. R. China
| | - Jian Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Shandong Normal University, Jinan 250014, P. R. China
| | - Xiaoyun Jiao
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Shandong Normal University, Jinan 250014, P. R. China
| | - Xu Wang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Shandong Normal University, Jinan 250014, P. R. China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Shandong Normal University, Jinan 250014, P. R. China
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108
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Choi H, Kim E, Choi JY, Park E, Lee HJ. Potent therapeutic targets for treatment of Alzheimer's disease: Amyloid degrading enzymes. B KOREAN CHEM SOC 2021. [DOI: 10.1002/bkcs.12390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hang Choi
- Department of Chemistry Education Kongju National University Gongju Republic of Korea
| | - Eungchan Kim
- Department of Chemistry Education Kongju National University Gongju Republic of Korea
| | - Jae Yoon Choi
- Department of Chemistry Education Kongju National University Gongju Republic of Korea
| | - Eunsik Park
- Department of Life Sport Education Kongju National University Gongju Republic of Korea
| | - Hyuck Jin Lee
- Department of Chemistry Education Kongju National University Gongju Republic of Korea
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109
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Han J, Du Z, Lim MH. Mechanistic Insight into the Design of Chemical Tools to Control Multiple Pathogenic Features in Alzheimer's Disease. Acc Chem Res 2021; 54:3930-3940. [PMID: 34606227 DOI: 10.1021/acs.accounts.1c00457] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Alzheimer's disease (AD) is the most common form of dementia and is characterized by memory loss and cognitive decline. Approximately 50 million people worldwide are suffering from AD and related dementias. Very recently, the first new drug targeting amyloid-β (Aβ) aggregates has been approved by the United States Food and Drug Administration, but its efficacy against AD is still debatable. Other available treatments temporarily relieve the symptoms of AD. The difficulty in discovering effective therapeutics for AD originates from its complicated nature, which results from the interrelated pathogenic pathways led by multiple factors. Therefore, to develop potent disease-modifying drugs, multiple pathological features found in AD should be fully elucidated.Our laboratory has been designing small molecules as chemical tools to investigate the individual and interrelated pathologies triggered by four pathogenic elements found in the AD-affected brain: metal-free Aβ, metal-bound Aβ, reactive oxygen species (ROS), and acetylcholinesterase (AChE). Aβ peptides are partially folded and aggregate into oligomers, protofibrils, and fibrils. Aβ aggregates are considered to be neurotoxic, causing membrane disruption, aberrant cellular signaling, and organelle dysfunction. In addition, highly concentrated metal ions accumulate in senile plaques mainly composed of Aβ aggregates, which indicates that metal ions can directly interact with Aβ. Metal binding to Aβ affects the aggregation and conformation of the peptide. Moreover, the impaired homeostasis of redox-active Fe(II/III) and Cu(I/II) induces the overproduction of ROS through Fenton chemistry and Fenton-like reactions, respectively. Dysregulated ROS prompt oxidative-stress-damaging biological components such as lipids, proteins, and nucleic acids and, consequently, lead to neuronal death. Finally, the loss of cholinergic transmission mediated by the neurotransmitter acetylcholine (ACh) contributes to cognitive deficits observed in AD.In this Account, we illustrate the design principles for small-molecule-based chemical tools with reactivities against metal-free Aβ, metal-bound Aβ, ROS, and AChE. More importantly, mechanistic details at the molecular level are highlighted with some examples of chemical tools that were developed by our group. The aggregation of metal-free Aβ can be modulated by modifying amino acid residues responsible for self-assembling Aβ or disassembling preformed fibrils. To alter the aggregation and cytotoxicity profiles of metal-bound Aβ, ternary complexation, metal chelation, and modifications onto metal-binding residues can be effective tactics. The presence and production of ROS are able to be controlled by small molecules with antioxidant and metal-binding properties. Finally, inhibiting substrate access or substrate binding at the active site of AChE can diminish its activity, which restores the levels of ACh. Overall, our rational approaches demonstrate the feasibility of developing small molecules as chemical tools that can target and modulate multiple pathological factors associated with AD and can be useful for gaining a greater understanding of the multifaceted pathology of the disease.
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Affiliation(s)
- Jiyeon Han
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Zhi Du
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Mi Hee Lim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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110
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Ma X, Hua J, Xu C, Zhang L, Wang Y, Zhang J, Cao L, Niu Y, Ma P. A Heterogeneous Catalyzed Oxidase Consists of Zinc-Substituted Arsenomolybdate with Reactive Oxygen Species Catalytic Ability. J CLUST SCI 2021. [DOI: 10.1007/s10876-021-02185-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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111
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Zhou J, Zhao R, Liu S, Feng L, Li W, He F, Gai S, Yang P. Europium Doped Silicon Quantum Dot As a Novel FRET Based Dual Detection Probe: Sensitive Detection of Tetracycline, Zinc, and Cadmium. SMALL METHODS 2021; 5:e2100812. [PMID: 34927952 DOI: 10.1002/smtd.202100812] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/04/2021] [Indexed: 06/14/2023]
Abstract
The imbalance of Zn2+ /Cd2+ in the human body can lead to many serious diseases due to the overuse of antibiotics and deposition in animal products. Developing a functional material for detecting is challenging and in demand. Herein, silicon quantum dots (SiQDs) are designed as a functional platform for the detection of tetracycline and Zn2+ /Cd2+ . The COOH functionalized SiQDs with the emission wavelength of 450 nm are chelated with Eu(NO3 )3 to form SiQDs-Eu3+ ratio fluorescent probes, which can be used to detect tetracycline (TCs) and Zn2+ /Cd2+ by fluorescence resonance energy transfer (FRET) principle sequentially. The fluorescent probe showed good linearity between ion concentration and fluorescence enhancement. The detection limit of TCs and Zn2+ /Cd2+ are 0.2 × 10-6 m and 3 × 10-6 m, respectively, when the pH of the solution is 7.4. In addition, the synthesized SiQDs-Eu3+ exhibited good stability (from 94.9% to 103.1%). The relative standard deviations (RSD, n = 10) of human serum and urine were both less than 3%. Therefore, the SiQDs-Eu3+ ratio fluorescence probe will provide a good application prospect in actual sample detection.
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Affiliation(s)
- Jialing Zhou
- Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, P. R. China
| | - Ruoxi Zhao
- Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, P. R. China
| | - Shikai Liu
- Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, P. R. China
| | - Lili Feng
- Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, P. R. China
| | - Wenting Li
- Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, P. R. China
| | - Fei He
- Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, P. R. China
| | - Shili Gai
- Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, P. R. China
| | - Piaoping Yang
- Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, P. R. China
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112
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A terpyridine-based chemosensor for detection transition metal ions in aqueous solution: Synthesis and characterization. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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113
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Kaumbekova S, Shah D. Early Aggregation Kinetics of Alzheimer’s Aβ 16–21 in the Presence of Ultrafine Fullerene Particles and Ammonium Nitrate. ACS CHEMICAL HEALTH & SAFETY 2021. [DOI: 10.1021/acs.chas.1c00023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Samal Kaumbekova
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
| | - Dhawal Shah
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
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114
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Manzoor S, Gabr MT, Rasool B, Pal K, Hoda N. Dual targeting of acetylcholinesterase and tau aggregation: Design, synthesis and evaluation of multifunctional deoxyvasicinone analogues for Alzheimer's disease. Bioorg Chem 2021; 116:105354. [PMID: 34562674 DOI: 10.1016/j.bioorg.2021.105354] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 08/18/2021] [Accepted: 09/08/2021] [Indexed: 12/13/2022]
Abstract
Development of multitargeted ligands have demonstrated remarkable efficiency as potential therapeutics for Alzheimer's disease (AD). Herein, we reported a new series of deoxyvasicinone analogues as dual inhibitor of acetylcholinesterase (AChE) and tau aggregation that function as multitargeted ligands for AD. All the multitargeted ligands 11(a-j) and 15(a-g) were designed, synthesized, and validated by 1HNMR, 13CNMR and mass spectrometry. All the synthesized compounds 11(a-j) and 15(a-g) were screened for their ability to inhibit AChE, BACE1, amyloid fibrillation, α-syn aggregation, and tau aggregation. All the screened compounds possessed weak inhibition of BACE-1, Aβ42 and α-syn aggregation. However, several compounds were identified as potential hits in the AChE inhibitory screening assay and cellular tau aggregation screening. Among all compounds, 11f remarkably inhibited AChE activity and cellular tau oligomerization at single-dose screening (10 µM). Moreover, 11f displayed a half-maximal inhibitory concentration (IC50) value of 0.91 ± 0.05 µM and half-maximal effective concentration (EC50) value of 3.83 ± 0.51 µM for the inhibition of AChE and cellular tau oligomerization, respectively. In addition, the neuroprotective effect of 11f was determined in tau-expressing SH-SY5Y cells incubated with Aβ oligomers. These findings highlighted the potential of 11f to function as a multifunctional ligand for the development of promising anti-AD drugs.
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Affiliation(s)
- Shoaib Manzoor
- Drug Design and Synthesis Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India.
| | - Moustafa T Gabr
- Department of Radiology, Stanford University, Stanford, CA 94305, United States.
| | - Bisma Rasool
- Drug Design and Synthesis Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
| | - Kavita Pal
- Drug Design and Synthesis Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
| | - Nasimul Hoda
- Drug Design and Synthesis Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India.
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115
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Fang WK, Liu L, Zhang LL, Liu D, Liu Y, Tang HW. Detection of Amyloid β Oligomers by a Fluorescence Ratio Strategy Based on Optically Trapped Highly Doped Upconversion Nanoparticles-SiO 2@Metal-Organic Framework Microspheres. Anal Chem 2021; 93:12447-12455. [PMID: 34449219 DOI: 10.1021/acs.analchem.1c02679] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Alzheimer's disease (AD), known as a progressive neurodegenerative disorder, has had a terrible impact on the health of aged people. Due to its severity, early diagnosis of AD is significant to retard the progress and provide timely treatment. Here, we report a fluorescence ratio detection of AD biomarker amyloid β oligomers (AβOs) by combining highly doped upconversion nanoparticles-SiO2@metal-organic framework/black hole quencher (H-USM/BHQ-1) microspheres with optical tweezer (OT) microscopic imaging. Optical trapping a single microsphere not only avoids the interference of fluid viscosity but also provides a high power density laser source to efficiently stimulate upconversion luminescence (UCL) of highly doped upconversion nanoparticles (H-UCNPs). Under this condition, H-UCNPs show stronger UCL and greater power-dependent properties compared to low-doped ones. Moreover, the closely packed quenching molecules BHQ-1 on a metal-organic framework (ZIF-8) exhibit excellent quenching efficiency for upconversion 525 and 540 nm emission. Also, the luminescent resonance energy transfer efficiency reaches 89.58%. When different concentrations of AβOs are present, the UCL540 recovers due to the decomposition of ZIF-8 and the release of BHQ-1. Using 540 and 654 nm emission ratio of highly doped UCNPs as reporters, the limit of detection reaches 28.4 pM for the quantitative determination of AβOs. Besides, this strategy is able to selectively quantify the AβO concentration. Therefore, we demonstrated the combination of optical trapping and highly doped UCNPs which is applied for the detection of AβOs with high sensitivity and specificity.
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Affiliation(s)
- Wen-Kai Fang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Liu Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Li-Ling Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Da Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Yang Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Hong-Wu Tang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
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116
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Li F, Zhan C, Dong X, Wei G. Molecular mechanisms of resveratrol and EGCG in the inhibition of Aβ 42 aggregation and disruption of Aβ 42 protofibril: similarities and differences. Phys Chem Chem Phys 2021; 23:18843-18854. [PMID: 34612422 DOI: 10.1039/d1cp01913a] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The aggregation of amyloid-β protein (Aβ) into fibrillary deposits is implicated in Alzheimer's disease (AD), and inhibiting Aβ aggregation and clearing Aβ fibrils are considered as promising strategies to treat AD. It has been reported that resveratrol (RSV) and epigallocatechin-3-gallate (EGCG), two of the most extensively studied natural polyphenols, are able to inhibit Aβ fibrillization and remodel the preformed fibrillary aggregates into amorphous, non-toxic species. However, the mechanisms by which RSV inhibits Aβ42 aggregation and disrupts Aβ42 protofibril, as well as the inhibitory/disruptive mechanistic similarities and differences between RSV and EGCG, remain mostly elusive. Herein, we performed extensive all-atom molecular dynamics (MD) simulations on Aβ42 dimers (the early aggregation state of Aβ42) and protofibrils (the intermediate of Aβ42 fibril formation and elongation) in the absence/presence of RSV or EGCG molecules. Our simulations show that both RSV and EGCG can bind with Aβ42 monomers and inhibit the dimerization of Aβ42. The binding of RSV with Aβ42 peptide is mostly viaπ-π stacking interactions, while the binding of EGCG with Aβ42 is mainly through hydrophobic, π-π stacking, and hydrogen-bonding interactions. Moreover, both RSV and EGCG disrupt the β-sheet structure and K28-A42 salt bridges, leading to a disruption of Aβ42 protofibril structure. RSV mainly binds with residues whose side-chains point inwards from the surface of the protofibril, while EGCG mostly binds with residues whose side-chains point outwards from the surface of the protofibril. Furthermore, RSV interacts with Aβ42 protofibrils mostly viaπ-π stacking interactions, while EGCG interacts with Aβ42 protofibrils mainly via hydrogen-bonding and hydrophobic interactions. For comparison, we also explore the effects of RSV/EGCG molecules on the aggregation inhibition and protofibril disruption of the Iowa mutant (D23N) Aβ. Our findings may pave the way for the design of more effective drug candidates as well as the utilization of cocktail therapy using RSV and EGCG for the treatment of AD.
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Affiliation(s)
- Fangying Li
- Department of Physics, State Key Laboratory of Surface Physics, and Key Laboratory for Computational Physical Sciences (Ministry of Education), Fudan University, Shanghai, 200438, People's Republic of China.
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Nam G, Suh JM, Yi Y, Lim MH. Drug repurposing: small molecules against Cu(II)-amyloid-β and free radicals. J Inorg Biochem 2021; 224:111592. [PMID: 34482237 DOI: 10.1016/j.jinorgbio.2021.111592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 08/21/2021] [Accepted: 08/22/2021] [Indexed: 10/20/2022]
Abstract
Alzheimer's disease (AD) presents a complex pathology entangling numerous pathological factors, including amyloid-β (Aβ), metal ions, and reactive oxygen species (ROS). Increasing evidence reveals pathological connections among these distinct components in AD. For instance, the association between the amyloid cascade and metal ion hypotheses has introduced a novel pathogenic target: metal-bound Aβ. Investigation of such interconnections requires substantial research and can be expedited by chemical reagents that are able to modify multiple pathogenic factors in AD. Drug repurposing is an efficient approach for rediscovering previously utilized molecules with desirable biological and pharmaceutical properties as chemical reagents. Herein, we report the evaluation of three pre-approved drug molecules, selected based on their chemical structure and properties, as chemical reagents that can be used for elucidating the complicated pathology of AD.
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Affiliation(s)
- Geewoo Nam
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Jong-Min Suh
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Yelim Yi
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Mi Hee Lim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
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118
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Kaumbekova S, Torkmahalleh MA, Shah D. Impact of ultrafine particles and secondary inorganic ions on early onset and progression of amyloid aggregation: Insights from molecular simulations. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 284:117147. [PMID: 33894535 DOI: 10.1016/j.envpol.2021.117147] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 04/09/2021] [Accepted: 04/10/2021] [Indexed: 06/12/2023]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder, associated with the aggregation of amyloid beta (Aβ) peptides and formation of plaques. The impact of airborne particulate matter (PM) and ultrafine particles (UFPs), on early onset and progression of AD has been recently hypothesized. Considering their small size, carbon black nanoparticles and UFPs can penetrate into human organism and affect Alzheimer's progression. While experiments show that the exposure of PM and UFPs can lead to enhanced concentrations of Aβ peptides, the interactions between the peptides and UFPs remain obscured. Particularly, the impact of UFPs on the initial rate of aggregation of the peptides is ambiguous. Herein, we perform molecular dynamics simulations to investigate the aggregation of Aβ16-21 peptides, an aggregation-prone segment of Aβ, in the presence of UFPs, mimicked by C60, under different salt solutions suggesting the presence of the inorganic constituents of PM in the blood. In particular, the simulations were performed in the presence of Na+, Cl- and CO3-2 ions to characterize typical buffer environments and electrolytes present in human blood. Furthermore, NH4+, NO3- and SO4-2 ions, found in PM, were used in the simulations. The results revealed high propensity for the aggregation of Aβ16-21 peptides. Moreover, the peptides made clusters with C60 molecules, that would be expected to act as a nucleation site for the formation of amyloid plaques. Taken together, the results showed that UFPs affected the peptide aggregation differently, depending on the type of ions present in the simulation environment. In the presence of C60, SO4-2 and NO3- ions accelerated the aggregation of Aβ16-21 peptides, however, NH4+ ions decelerated their aggregation. In addition, UFP lowered β-sheets amounts at all environments, except NaCl solution.
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Affiliation(s)
- Samal Kaumbekova
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kazakhstan
| | - Mehdi Amouei Torkmahalleh
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kazakhstan
| | - Dhawal Shah
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kazakhstan.
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119
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Redox Homeostasis and Prospects for Therapeutic Targeting in Neurodegenerative Disorders. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:9971885. [PMID: 34394839 PMCID: PMC8355971 DOI: 10.1155/2021/9971885] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 05/27/2021] [Accepted: 07/20/2021] [Indexed: 12/14/2022]
Abstract
Reactive species, such as those of oxygen, nitrogen, and sulfur, are considered part of normal cellular metabolism and play significant roles that can impact several signaling processes in ways that lead to either cellular sustenance, protection, or damage. Cellular redox processes involve a balance in the production of reactive species (RS) and their removal because redox imbalance may facilitate oxidative damage. Physiologically, redox homeostasis is essential for the maintenance of many cellular processes. RS may serve as signaling molecules or cause oxidative cellular damage depending on the delicate equilibrium between RS production and their efficient removal through the use of enzymatic or nonenzymatic cellular mechanisms. Moreover, accumulating evidence suggests that redox imbalance plays a significant role in the progression of several neurodegenerative diseases. For example, studies have shown that redox imbalance in the brain mediates neurodegeneration and alters normal cytoprotective responses to stress. Therefore, this review describes redox homeostasis in neurodegenerative diseases with a focus on Alzheimer's and Parkinson's disease. A clearer understanding of the redox-regulated processes in neurodegenerative disorders may afford opportunities for newer therapeutic strategies.
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120
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Kim M, Lim MH. Redox Properties of Small Molecules Essential for Multiple Reactivities with Pathological Factors in Alzheimer's Disease. B KOREAN CHEM SOC 2021. [DOI: 10.1002/bkcs.12372] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Mingeun Kim
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
| | - Mi Hee Lim
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
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Boshaala A, Said MA, Assirey EA, Alborki ZS, AlObaid AA, Zarrouk A, Warad I. Crystal structure, MEP/DFT/XRD, thione ⇔ thiol tautomerization, thermal, docking, and optical/TD-DFT studies of (E)-methyl 2-(1-phenylethylidene)-hydrazinecarbodithioate ligand. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130461] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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122
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A magnetic functionalized lanthanide fluorescent sensor for detection of trace zinc ion. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04472-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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123
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Botteselle GV, Elias WC, Bettanin L, Canto RFS, Salin DNO, Barbosa FAR, Saba S, Gallardo H, Ciancaleoni G, Domingos JB, Rafique J, Braga AL. Catalytic Antioxidant Activity of Bis-Aniline-Derived Diselenides as GPx Mimics. Molecules 2021; 26:molecules26154446. [PMID: 34361597 PMCID: PMC8347129 DOI: 10.3390/molecules26154446] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/14/2021] [Accepted: 07/20/2021] [Indexed: 12/02/2022] Open
Abstract
Herein, we describe a simple and efficient route to access aniline-derived diselenides and evaluate their antioxidant/GPx-mimetic properties. The diselenides were obtained in good yields via ipso-substitution/reduction from the readily available 2-nitroaromatic halides (Cl, Br, I). These diselenides present GPx-mimetic properties, showing better antioxidant activity than the standard GPx-mimetic compounds, ebselen and diphenyl diselenide. DFT analysis demonstrated that the electronic properties of the substituents determine the charge delocalization and the partial charge on selenium, which correlate with the catalytic performances. The amino group concurs in the stabilization of the selenolate intermediate through a hydrogen bond with the selenium.
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Affiliation(s)
- Giancarlo V. Botteselle
- Departamento de Química, Universidade Estadual do Centro-Oeste (UNICENTRO), Guarapuava 85040-167, PR, Brazil
- Correspondence: (G.V.B.); (J.R.); (A.L.B.)
| | - Welman C. Elias
- Departamento de Química, Universidade Federal de Santa Catarina (UFSC), Florianópolis 88040-970, SC, Brazil; (W.C.E.); (L.B.); (D.N.O.S.); (F.A.R.B.); (H.G.); (J.B.D.)
| | - Luana Bettanin
- Departamento de Química, Universidade Federal de Santa Catarina (UFSC), Florianópolis 88040-970, SC, Brazil; (W.C.E.); (L.B.); (D.N.O.S.); (F.A.R.B.); (H.G.); (J.B.D.)
| | - Rômulo F. S. Canto
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre 90050-170, RS, Brazil;
| | - Drielly N. O. Salin
- Departamento de Química, Universidade Federal de Santa Catarina (UFSC), Florianópolis 88040-970, SC, Brazil; (W.C.E.); (L.B.); (D.N.O.S.); (F.A.R.B.); (H.G.); (J.B.D.)
| | - Flavio A. R. Barbosa
- Departamento de Química, Universidade Federal de Santa Catarina (UFSC), Florianópolis 88040-970, SC, Brazil; (W.C.E.); (L.B.); (D.N.O.S.); (F.A.R.B.); (H.G.); (J.B.D.)
| | - Sumbal Saba
- Instituto de Química—IQ, Universidade Federal de Goiás—(UFG), Goiânia 74690-900, GO, Brazil;
| | - Hugo Gallardo
- Departamento de Química, Universidade Federal de Santa Catarina (UFSC), Florianópolis 88040-970, SC, Brazil; (W.C.E.); (L.B.); (D.N.O.S.); (F.A.R.B.); (H.G.); (J.B.D.)
| | - Gianluca Ciancaleoni
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, I-56124 Pisa, Italy;
| | - Josiel B. Domingos
- Departamento de Química, Universidade Federal de Santa Catarina (UFSC), Florianópolis 88040-970, SC, Brazil; (W.C.E.); (L.B.); (D.N.O.S.); (F.A.R.B.); (H.G.); (J.B.D.)
| | - Jamal Rafique
- Instituto de Química—INQUI, Universidade Federal do Mato Grosso do Sul (UFMS), Campo Grande 79074-460, MS, Brazil
- Correspondence: (G.V.B.); (J.R.); (A.L.B.)
| | - Antonio L. Braga
- Departamento de Química, Universidade Federal de Santa Catarina (UFSC), Florianópolis 88040-970, SC, Brazil; (W.C.E.); (L.B.); (D.N.O.S.); (F.A.R.B.); (H.G.); (J.B.D.)
- Department of Chemical Sciences, Faculty of Science, University of Johannesburg, Doornfontein 2028, South Africa
- Correspondence: (G.V.B.); (J.R.); (A.L.B.)
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124
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Li P. Bridging the 12-6-4 Model and the Fluctuating Charge Model. Front Chem 2021; 9:721960. [PMID: 34368089 PMCID: PMC8339297 DOI: 10.3389/fchem.2021.721960] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 07/01/2021] [Indexed: 11/30/2022] Open
Abstract
Metal ions play important roles in various biological systems. Molecular dynamics (MD) using classical force field has become a popular research tool to study biological systems at the atomic level. However, meaningful MD simulations require reliable models and parameters. Previously we showed that the 12-6 Lennard-Jones nonbonded model for ions could not reproduce the experimental hydration free energy (HFE) and ion-oxygen distance (IOD) values simultaneously when ion has a charge of +2 or higher. We discussed that this deficiency arises from the overlook of the ion-induced dipole interaction in the 12-6 model, and this term is proportional to 1/r4 based on theory. Hence, we developed the 12-6-4 model and showed it could solve this deficiency in a physically meaningful way. However, our previous research also found that the 12-6-4 model overestimated the coordination numbers (CNs) for some highly charged metal ions. And we attributed this artifact to that the current 12-6-4 scheme lacks a correction for the interactions among the first solvation shell water molecules. In the present study, we considered the ion-included dipole interaction by using the 12-6 model with adjusting the atomic charges of the first solvation shell water molecules. This strategy not only considers the ion-induced dipole interaction between ion and the first solvation shell water molecules but also well accounts for the increased repulsion among these water molecules compared to the bulk water molecules. We showed this strategy could well reproduce the experimental HFE and IOD values for Mg2+, Zn2+, Al3+, Fe3+, and In3+ and solve the CN overestimation issue of the 12-6-4 model for Fe3+ and In3+. Moreover, our simulation results showed good agreement with previous ab initio MD simulations. In addition, we derived the physical relationship between the C4 parameter and induced dipole moment, which agreed well with our simulation results. Finally, we discussed the implications of the present work for simulating metalloproteins. Due to the fluctuating charge model uses a similar concept to the 12-6 model with adjusting atomic charges, we believe the present study builds a bridge between the 12-6-4 model and the fluctuating charge model.
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Affiliation(s)
- Pengfei Li
- Department of Chemistry and Biochemistry, Loyola University Chicago, Chicago, IL, United States
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125
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Zeng F, Peng K, Han L, Yang J. Photothermal and Photodynamic Therapies via NIR-Activated Nanoagents in Combating Alzheimer's Disease. ACS Biomater Sci Eng 2021; 7:3573-3585. [PMID: 34279071 DOI: 10.1021/acsbiomaterials.1c00605] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
It is well established that the polymerization of amyloid-β peptides into fibrils/plaques is a critical step during the development of Alzheimer's disease (AD). Phototherapy, which includes photodynamic therapy and photothermal therapy, is a highly attractive strategy in AD treatment due to its merits of operational flexibility, noninvasiveness, and high spatiotemporal resolution. Distinct from traditional chemotherapies or immunotherapies, phototherapies capitalize on the interaction between photosensitizers or photothermal transduction agents and light to trigger photochemical reactions to generate either reactive oxygen species or heat effects to modulate Aβ aggregation, ultimately restoring nerve damage and ameliorating memory deficits. In this Review, we provide an overview of the recent advances in the development of near-infrared-activated nanoagents for AD phototherapies and discuss the potential challenges of and perspectives on this emerging field with a special focus on how to improve the efficiency and utility of such treatment. We hope that this Review will spur preclinical research and the clinical translation of AD treatment through phototherapy.
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Affiliation(s)
- Fantian Zeng
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Kewen Peng
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Ling Han
- Center for Drug Evaluation, National Medical Products Administration, Beijing 100022, China
| | - Jian Yang
- Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai 200444, China
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126
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Redox-Active Metal Ions and Amyloid-Degrading Enzymes in Alzheimer's Disease. Int J Mol Sci 2021; 22:ijms22147697. [PMID: 34299316 PMCID: PMC8307724 DOI: 10.3390/ijms22147697] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/11/2021] [Accepted: 07/16/2021] [Indexed: 12/11/2022] Open
Abstract
Redox-active metal ions, Cu(I/II) and Fe(II/III), are essential biological molecules for the normal functioning of the brain, including oxidative metabolism, synaptic plasticity, myelination, and generation of neurotransmitters. Dyshomeostasis of these redox-active metal ions in the brain could cause Alzheimer’s disease (AD). Thus, regulating the levels of Cu(I/II) and Fe(II/III) is necessary for normal brain function. To control the amounts of metal ions in the brain and understand the involvement of Cu(I/II) and Fe(II/III) in the pathogenesis of AD, many chemical agents have been developed. In addition, since toxic aggregates of amyloid-β (Aβ) have been proposed as one of the major causes of the disease, the mechanism of clearing Aβ is also required to be investigated to reveal the etiology of AD clearly. Multiple metalloenzymes (e.g., neprilysin, insulin-degrading enzyme, and ADAM10) have been reported to have an important role in the degradation of Aβ in the brain. These amyloid degrading enzymes (ADE) could interact with redox-active metal ions and affect the pathogenesis of AD. In this review, we introduce and summarize the roles, distributions, and transportations of Cu(I/II) and Fe(II/III), along with previously invented chelators, and the structures and functions of ADE in the brain, as well as their interrelationships.
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127
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Al-Shammari N, Savva L, Kennedy-Britten O, Platts JA. Forcefield evaluation and accelerated molecular dynamics simulation of Zn(II) binding to N-terminus of amyloid-β. Comput Biol Chem 2021; 93:107540. [PMID: 34271422 DOI: 10.1016/j.compbiolchem.2021.107540] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/11/2021] [Accepted: 06/21/2021] [Indexed: 01/06/2023]
Abstract
We report conventional and accelerated molecular dynamics simulation of Zn(II) bound to the N-terminus of amyloid-β. By comparison against NMR data for the experimentally determined binding mode, we find that certain combinations of forcefield and solvent model perform acceptably in describing the size, shape and secondary structure, and that there is no appreciable difference between implicit and explicit solvent models. We therefore used the combination of ff14SB forcefield and GBSA solvent model to compare the result of different binding modes of Zn(II) to the same peptide, using accelerated MD to enhance sampling and comparing the free peptide simulated in the same way. We show that Zn(II) imparts significant rigidity to the peptide, disrupts the secondary structure and pattern of salt bridges seen in the free peptide, and induces closer contact between residues. Free energy surfaces in 1 or 2 dimensions further highlight the effect of metal coordination on peptide's spatial extent. We also provide evidence that accelerated MD provides improved sampling over conventional MD by visiting as many or more configurations in much shorter simulation times.
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Affiliation(s)
| | - Loizos Savva
- School of Chemistry, Cardiff University, Park Place, Cardiff, CF10 3AT, UK
| | | | - James A Platts
- School of Chemistry, Cardiff University, Park Place, Cardiff, CF10 3AT, UK.
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128
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Huang Y, Chang Y, Liu L, Wang J. Nanomaterials for Modulating the Aggregation of β-Amyloid Peptides. Molecules 2021; 26:4301. [PMID: 34299575 PMCID: PMC8305396 DOI: 10.3390/molecules26144301] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/09/2021] [Accepted: 07/09/2021] [Indexed: 12/13/2022] Open
Abstract
The aberrant aggregation of amyloid-β (Aβ) peptides in the brain has been recognized as the major hallmark of Alzheimer's disease (AD). Thus, the inhibition and dissociation of Aβ aggregation are believed to be effective therapeutic strategiesforthe prevention and treatment of AD. When integrated with traditional agents and biomolecules, nanomaterials can overcome their intrinsic shortcomings and boost their efficiency via synergistic effects. This article provides an overview of recent efforts to utilize nanomaterials with superior properties to propose effective platforms for AD treatment. The underlying mechanismsthat are involved in modulating Aβ aggregation are discussed. The summary of nanomaterials-based modulation of Aβ aggregation may help researchers to understand the critical roles in therapeutic agents and provide new insight into the exploration of more promising anti-amyloid agents and tactics in AD theranostics.
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Affiliation(s)
- Yaliang Huang
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;
- Henan Province of Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China;
| | - Yong Chang
- Henan Province of Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China;
| | - Lin Liu
- Henan Province of Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China;
| | - Jianxiu Wang
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;
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129
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Hu C, Jiang L, Tang L, Zhang M, Sheng R. Design, synthesis and biological evaluation of 2-styryl-5-hydroxy-4-pyrone derivatives and analogues as multiple functional agents with the potential for the treatment of Alzheimer's disease. Bioorg Med Chem 2021; 44:116306. [PMID: 34274550 DOI: 10.1016/j.bmc.2021.116306] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 07/01/2021] [Accepted: 07/02/2021] [Indexed: 11/29/2022]
Abstract
A novel series of 2-styryl-5-hydroxy-4-pyrone derivatives and analogues were designed and synthesized as H3 receptor antagonism based multitarget-directed ligands (MTDLs) for AD therapy using pharmacophore-combine strategy. The 2-styryl-5-hydroxy-4-pyrone pharmacophore with metal ion chelation, antioxidation, and Aβ aggregation inhibition activities was employed as the "eastern part", and a typical phenoxyalkylamine moiety was used as "central ring + western part" of the H3 receptor antagonist. The biological evaluation revealed that the majority of the target compounds demonstrated desirable multiple functions. The two most promising compounds 8a and 8b exhibited nanomolar IC50 values on H3 receptor antagonism, excellent metal ion chelating capability, more potent ABTS+ scavenging activity than Trolox, efficient Aβ self-aggregation and Cu2+-induced aggregation inhibitory activities, as well as disaggregation activities against Aβ self/Cu2+-induced aggregation.
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Affiliation(s)
- Chenxian Hu
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Liu Jiang
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Li Tang
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China; College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen, China
| | - Minkui Zhang
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Rong Sheng
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.
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130
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Golec C, Esteves-Villanueva JO, Martic S. Electrochemical characterization of Cu(II) complexes of brain-related tau peptides. CAN J CHEM 2021. [DOI: 10.1139/cjc-2020-0288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Metal ion dyshomeostasis plays an important role in diseases, including neurodegeneration. Tau protein is a known neurodegeneration biomarker, but its interactions with biologically relevant metal ions, such as Cu(II), are not fully understood. Herein, the Cu(II) complexes of four tau R peptides, based on the tau repeat domains, R1, R2, R3, and R4, were characterized by electrochemical methods, including cyclic voltammetry, square-wave voltammetry, and differential pulse voltammetry in solution under aerobic conditions. The current and potential associated with Cu(II)/(I) redox couple was modulated as a function of R peptide sequence and concentration. All R peptides coordinated Cu(II) resulting in a dramatic decrease in the current associated with free Cu(II), and the appearance of a new redox couple due to metallo–peptide complex. The metallo–peptide complexes were characterized by the irreversible redox couple at more positive potentials and slower electron-transfer rates compared with the free Cu(II). The competition binding studies between R peptides with Cu(II) indicated that the strongest binding affinity was observed for the R3 peptide, which contained 2 His and 1 Cys residues. The formation of complexes was also evaluated as a function of peptide concentration and in the presence of competing Zn(II) ions. Data indicate that all metallo–peptides remain redox active pointing to the potential importance of the interactions between tau protein with metal ions in a biological setting.
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Affiliation(s)
- Camilla Golec
- Department of Forensic Science and Environmental Life Sciences Program, Trent University, 1600 West Bank Road, Peterborough, ON K9L 0G2, Canada
| | | | - Sanela Martic
- Department of Forensic Science and Environmental Life Sciences Program, Trent University, 1600 West Bank Road, Peterborough, ON K9L 0G2, Canada
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Molecular insight into the early stage of amyloid-β(1-42) Homodimers aggregation influenced by histidine tautomerism. Int J Biol Macromol 2021; 184:887-897. [PMID: 34153362 DOI: 10.1016/j.ijbiomac.2021.06.078] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 05/23/2021] [Accepted: 06/10/2021] [Indexed: 11/20/2022]
Abstract
Aggregated amyloid β-peptide (Aβ) in small oligomeric forms inside the brain causes synaptic function disruption and the development of Alzheimer's disease (AD). Histidine is an important amino acid that may lead to structural changes. Aβ42 monomer chain includes 3 histidine residues that considering two ε and δ tautomers 8 isomers, including (εεε) and (εδδ) could be formed. Molecular dynamics simulation on homodimerization of (εεε) (the most common type of tautomers) and (εδδ) tautomers with different initial configurations using monomer chains from our previous work were performed to uncover the tautomeric behavior of histidine on Aβ42 aggregation in a physiological pH which is still largely unknown and impossible to observe experimentally. We found a higher propensity of forming β-sheet in (εδδ) homodimers and specifically in a greater amount from Aβ42 than from Aβ40. A smaller amount of β-sheet formation was observed for (εεε) homodimers compared with (εδδ). Additionally, interactions in (εδδ) homodimers may indicate the importance of the hydrophobic core and C-/N-terminals during oligomerization. Our findings indicate the important role of the tautomeric effect of histidine and (εδδ) homodimers at the early stage of Aβ aggregation.
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132
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Roldán-Martín L, Peccati F, Sciortino G, Sodupe M, Maréchal JD. Impact of Cu(II) and Al(III) on the conformational landscape of amyloidβ 1-42. Phys Chem Chem Phys 2021; 23:13023-13032. [PMID: 34095932 DOI: 10.1039/d1cp01561c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Metal ions have been found to play an important role in the formation of extracellular β-amyloid plaques, a major hallmark of Alzheimer's disease. In the present study, the conformational landscape of Aβ42 with Al(iii) and Cu(ii) has been explored using Gaussian accelerated molecular dynamics. Both metals reduce the flexibility of the peptide and entail a higher structural organization, although to different degrees. As a general trend, Cu(ii) binding leads to an increased α-helix content and to the formation of two α-helices that tend to organize in a U-shape. By contrast, most Al(iii) complexes induce a decrease in helical content, leading to more extended structures that favor the appearance of transitory β-strands.
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Affiliation(s)
- Lorena Roldán-Martín
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain.
| | - Francesca Peccati
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 801A, 48160 Derio, Spain
| | - Giuseppe Sciortino
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain. and Institut of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), 43007 Tarragona, Catalonia, Spain
| | - Mariona Sodupe
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain.
| | - Jean-Didier Maréchal
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain.
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133
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Zhang C, Lv Y, Bai R, Xie Y. Structural exploration of multifunctional monoamine oxidase B inhibitors as potential drug candidates against Alzheimer's disease. Bioorg Chem 2021; 114:105070. [PMID: 34126574 DOI: 10.1016/j.bioorg.2021.105070] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 05/25/2021] [Accepted: 06/05/2021] [Indexed: 10/21/2022]
Abstract
AD is one of the most typical neurodegenerative disorders that suffer many seniors worldwide. Recently, MAO inhibitors have received increasing attention not only for their roles involved in monoamine neurotransmitters metabolism and oxidative stress but also for their additional neuroprotective and neurorescue effects against AD. The curiosity in MAO inhibitors is reviving, and novel MAO-B inhibitors recently developed with ancillary activities (e.g., Aβ aggregation and AChE inhibition, anti-ROS and chelating activities) have been proposed as multitarget drugs foreshadowing a positive outlook for the treatment of AD. The current review describes the recent development of the design, synthesis, and screening of multifunctional ligands based on MAO-B inhibition for AD therapy. Structure-activity relationships and rational design strategies of the synthetic or natural product derivatives (chalcones, coumarins, chromones, and homoisoflavonoids) are discussed.
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Affiliation(s)
- Changjun Zhang
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceutical, Zhejiang University of Technology, Hangzhou, PR China
| | - Yangjing Lv
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, PR China
| | - Renren Bai
- College of Pharmacy, School of Medicine, Hangzhou Normal University, Hangzhou, PR China; Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines; Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, PR China.
| | - Yuanyuan Xie
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceutical, Zhejiang University of Technology, Hangzhou, PR China; College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, PR China.
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134
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Chaparro D, Flores-Gaspar A, Alí-Torres J. Computational Design of Copper Ligands with Controlled Metal Chelating, Pharmacokinetics, and Redox Properties for Alzheimer's Disease. J Alzheimers Dis 2021; 82:S179-S193. [PMID: 34032611 DOI: 10.3233/jad-200911] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Redox active metal cations, such as Cu2 +, have been related to induce amyloid plaques formation and oxidative stress, which are two of the key events in the development of Alzheimer's disease (AD) and others metal promoted neurodegenerative diseases. In these oxidative events, standard reduction potential (SRP) is an important property especially relevant in the reactive oxygen species formation. OBJECTIVE The SRP is not usually considered for the selection of drug candidates in anti-AD treatments. In this work, we present a computational protocol for the selection of multifunctional ligands with suitable metal chelating, pharmacokinetics, and redox properties. METHODS The filtering process is based on quantum chemical calculations and the use of in silico tools. Calculations of SRP were performed by using the M06-2X density functional and the isodesmic approach. Then, a virtual screening technique (VS) was used for similar structure search. RESULTS Protocol application allowed the assessment of chelating, drug likeness, and redox properties of copper ligands. Those molecules showing the best features were selected as molecular scaffolds for a VS procedure in order to obtain related compounds. After applying this process, we present a list of candidates with suitable properties to prevent the redox reactions mediated by copper(II) ion. CONCLUSION The protocol incorporates SRP in the filtering stage and can be effectively used to obtain a set of potential drug candidates for AD treatments.
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Affiliation(s)
- Diego Chaparro
- Departamento de Química, Universidad Nacional de Colombia, Bogotá, Colombia.,Departamento de Química, Universidad Militar Nueva Granada, Cajicá, Colombia
| | - Areli Flores-Gaspar
- Departamento de Química, Universidad Militar Nueva Granada, Cajicá, Colombia
| | - Jorge Alí-Torres
- Departamento de Química, Universidad Nacional de Colombia, Bogotá, Colombia
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135
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Yao H, Uras G, Zhang P, Xu S, Yin Y, Liu J, Qin S, Li X, Allen S, Bai R, Gong Q, Zhang H, Zhu Z, Xu J. Discovery of Novel Tacrine-Pyrimidone Hybrids as Potent Dual AChE/GSK-3 Inhibitors for the Treatment of Alzheimer's Disease. J Med Chem 2021; 64:7483-7506. [PMID: 34024109 DOI: 10.1021/acs.jmedchem.1c00160] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Based on a multitarget strategy, a series of novel tacrine-pyrimidone hybrids were identified for the potential treatment of Alzheimer's disease (AD). Biological evaluation results demonstrated that these hybrids exhibited significant inhibitory activities toward acetylcholinesterase (AChE) and glycogen synthase kinase 3 (GSK-3). The optimal compound 27g possessed excellent dual AChE/GSK-3 inhibition both in terms of potency and equilibrium (AChE: IC50 = 51.1 nM; GSK-3β: IC50 = 89.3 nM) and displayed significant amelioration on cognitive deficits in scopolamine-induced amnesia mice and efficient reduction against phosphorylation of tau protein on Ser-199 and Ser-396 sites in glyceraldehyde (GA)-stimulated differentiated SH-SY5Y cells. Furthermore, compound 27g exhibited eligible pharmacokinetic properties, good kinase selectivity, and moderate neuroprotection against GA-induced reduction in cell viability and neurite damage in SH-SY5Y-derived neurons. The multifunctional profiles of compound 27g suggest that it deserves further investigation as a promising lead for the prospective treatment of AD.
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Affiliation(s)
- Hong Yao
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China
| | - Giuseppe Uras
- Division of Molecular Therapeutics & Formulation, School of Pharmacy, The University of Nottingham, University Park Campus, Nottingham NG7 2RD, U.K
| | - Pengfei Zhang
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China
| | - Shengtao Xu
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China
| | - Ying Yin
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China.,CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Jie Liu
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China
| | - Shuai Qin
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China
| | - Xinuo Li
- Division of Molecular Therapeutics & Formulation, School of Pharmacy, The University of Nottingham, University Park Campus, Nottingham NG7 2RD, U.K
| | - Stephanie Allen
- Division of Molecular Therapeutics & Formulation, School of Pharmacy, The University of Nottingham, University Park Campus, Nottingham NG7 2RD, U.K
| | - Renren Bai
- College of Pharmacy, School of Medicine, Hangzhou Normal University, Hangzhou 311121, China
| | - Qi Gong
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Haiyan Zhang
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Zheying Zhu
- Division of Molecular Therapeutics & Formulation, School of Pharmacy, The University of Nottingham, University Park Campus, Nottingham NG7 2RD, U.K
| | - Jinyi Xu
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China
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136
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Daly R, Narayan T, Shao H, O’Riordan A, Lovera P. Platinum-Based Interdigitated Micro-Electrode Arrays for Reagent-Free Detection of Copper. SENSORS 2021; 21:s21103544. [PMID: 34069670 PMCID: PMC8161293 DOI: 10.3390/s21103544] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 05/10/2021] [Accepted: 05/13/2021] [Indexed: 12/15/2022]
Abstract
Water is a precious resource that is under threat from a number of pressures, including, for example, release of toxic compounds, that can have damaging effect on ecology and human health. The current methods of water quality monitoring are based on sample collection and analysis at dedicated laboratories. Recently, electrochemical-based methods have attracted a lot of attention for environmental sensing owing to their versatility, sensitivity and their ease of integration with cost effective, smart and portable readout systems. In the present work, we report on the fabrication and characterization of platinum-based interdigitated microband electrodes arrays, and their application for trace detection of copper. Using square wave voltammetry after acidification with mineral acids, a limit of detection of 0.8 μg/L was achieved. Copper detection was also undertaken on river water samples and compared with standard analytical techniques. The possibility of controlling the pH at the surface of the sensors—thereby avoiding the necessity to add mineral acids—was investigated. By applying potentials to drive the water splitting reaction at one comb of the sensor’s electrode (the protonator), it was possible to lower the pH in the vicinity of the sensing electrode. Detection of standard copper solutions down to 5 μg/L (ppb) using this technique is reported. This reagent free method of detection opens the way for autonomous, in situ monitoring of pollutants in water bodies.
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137
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Kong L, Zhou X, Shi G, Yu Y. Molybdenum disulfide nanosheets-based fluorescent "off-to-on" probe for targeted monitoring and inhibition of β-amyloid oligomers. Analyst 2021; 145:6369-6377. [PMID: 32729592 DOI: 10.1039/d0an00019a] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A novel and simple "off-to-on" fluorescent sensing platform for β-amyloid oligomers (Aβo) was developed based on dye (FAM)-labeled single-strand DNA (FAM-ssDNA)-conjugated molybdenum disulfide nanosheets (MoS2 NSs). Due to strong adsorption of ss-DNA to the surface of MoS2 NSs, the fluorescence of FAM was quenched remarkably, leading to a fluorescent "off" state. However, in the presence of Aβo, a hybrid structure between Aβo and FAM-ssDNA resulted in the dissociation of FAM-ssDNA from MoS2 NSs and an obvious fluorescence recovery transformed the fluorescence to an "on" state. The developed fluorescence sensing assay showed a good linear relationship toward Aβo ranging from 0.01 to 20 μM (R2 = 0.994) with a satisfactory detection limit of 3.1 nM. Practical samples of hippocampus and cortex tissues from APP/PS1 double transgenic AD mice were applied to demonstrate feasibility of the assay. Moreover, we found that similar to MoS2 nanoparticles, MoS2 NSs possessed therapeutic effects on Alzheimer's disease (AD) by inhibiting Aβ aggregations and degrading the previously formed Aβ fibrils. Collectively, the high sensitivity, specificity, and good biocompatibility along with an efficient anti-aggregation ability, the presented fluorescent strategy with MoS2 NSs demonstrated their promising potential for future AD-related research.
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Affiliation(s)
- Lingna Kong
- School of Chemistry and Molecular Engineering, Shanghai Key Laboratory for Urban Ecological Processes and Eco-Restoration, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P. R. China
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138
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Bataglioli JC, Gomes LMF, Maunoir C, Smith JR, Cole HD, McCain J, Sainuddin T, Cameron CG, McFarland SA, Storr T. Modification of amyloid-beta peptide aggregation via photoactivation of strained Ru(ii) polypyridyl complexes. Chem Sci 2021; 12:7510-7520. [PMID: 34163842 PMCID: PMC8171320 DOI: 10.1039/d1sc00004g] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Accepted: 04/19/2021] [Indexed: 01/01/2023] Open
Abstract
Alzheimer's disease (AD) is a chronic neurodegenerative disorder characterized by progressive and irreversible damage to the brain. One of the hallmarks of the disease is the presence of both soluble and insoluble aggregates of the amyloid beta (Aβ) peptide in the brain, and these aggregates are considered central to disease progression. Thus, the development of small molecules capable of modulating Aβ peptide aggregation may provide critical insight into the pathophysiology of AD. In this work we investigate how photoactivation of three distorted Ru(ii) polypyridyl complexes (Ru1-3) alters the aggregation profile of the Aβ peptide. Photoactivation of Ru1-3 results in the loss of a 6,6'-dimethyl-2,2'-bipyridyl (6,6'-dmb) ligand, affording cis-exchangeable coordination sites for binding to the Aβ peptide. Both Ru1 and Ru2 contain an extended planar imidazo[4,5-f][1,10]phenanthroline ligand, as compared to a 2,2'-bipyridine ligand for Ru3, and we show that the presence of the phenanthroline ligand promotes covalent binding to Aβ peptide His residues, and in addition, leads to a pronounced effect on peptide aggregation immediately after photoactivation. Interestingly, all three complexes resulted in a similar aggregate size distribution at 24 h, forming insoluble amorphous aggregates as compared to significant fibril formation for peptide alone. Photoactivation of Ru1-3 in the presence of pre-formed Aβ1-42 fibrils results in a change to amorphous aggregate morphology, with Ru1 and Ru2 forming large amorphous aggregates immediately after activation. Our results show that photoactivation of Ru1-3 in the presence of either monomeric or fibrillar Aβ1-42 results in the formation of large amorphous aggregates as a common endpoint, with Ru complexes incorporating the extended phenanthroline ligand accelerating this process and thereby limiting the formation of oligomeric species in the initial stages of the aggregation process that are reported to show considerable toxicity.
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Affiliation(s)
| | - Luiza M F Gomes
- Department of Chemistry, Simon Fraser University BC Canada V5A-1S6
| | - Camille Maunoir
- Department of Chemistry, Simon Fraser University BC Canada V5A-1S6
| | - Jason R Smith
- Department of Chemistry, Simon Fraser University BC Canada V5A-1S6
| | - Houston D Cole
- Department of Chemistry and Biochemistry, University of Texas Arlington Texas USA 76019
| | - Julia McCain
- Department of Chemistry, Acadia University Wolfville Nova Scotia Canada B4P 2R6
| | - Tariq Sainuddin
- Department of Chemistry, Acadia University Wolfville Nova Scotia Canada B4P 2R6
| | - Colin G Cameron
- Department of Chemistry and Biochemistry, University of Texas Arlington Texas USA 76019
| | - Sherri A McFarland
- Department of Chemistry and Biochemistry, University of Texas Arlington Texas USA 76019
| | - Tim Storr
- Department of Chemistry, Simon Fraser University BC Canada V5A-1S6
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139
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Amyloid-β: A double agent in Alzheimer's disease? Biomed Pharmacother 2021; 139:111575. [PMID: 33845371 DOI: 10.1016/j.biopha.2021.111575] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 03/24/2021] [Accepted: 03/31/2021] [Indexed: 01/23/2023] Open
Abstract
Amyloid-β (Aβ) accumulation is one of the cardinal pathological hallmarks of Alzheimer's disease and plays an important role in its pathogenesis. Although the neurotoxic effects of Aβ has been extensively studied, recent studies have revealed that it may also have protective effects. Here, we review novel findings that have shifted our understanding of the role of Aβ in the pathogenesis of Alzheimer's disease. An in-depth and comprehensive understanding of Aβ will provide us with a broader perspective on the treatment of Alzheimer's disease.
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140
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Baier A, Kokel A, Horton W, Gizińska E, Pandey G, Szyszka R, Török B, Török M. Organofluorine Hydrazone Derivatives as Multifunctional Anti-Alzheimer's Agents with CK2 Inhibitory and Antioxidant Features. ChemMedChem 2021; 16:1927-1932. [PMID: 33713036 DOI: 10.1002/cmdc.202100047] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Indexed: 11/10/2022]
Abstract
A set of novel hydrazone derivatives were synthesized and analyzed for their biological activities. The compounds were tested for their inhibitory effect on the phosphorylating activity of the protein kinase CK2, and their antioxidant activity was also determined in three commonly used assays. The hydrazones were evaluated for their radical scavenging against the DPPH, ABTS and peroxyl radicals. Several compounds have been identified as good antioxidants as well as potent protein kinase CK2 inhibitors. Most hydrazones containing a 4-N(CH3 )2 residue or perfluorinated phenyl rings showed high activity in the radical-scavenging assays and possess nanomolar IC50 values in the kinase assays.
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Affiliation(s)
- Andrea Baier
- Department of Animal Physiology and Toxicology, The John Paul II Catholic University of Lublin, ul. Konstantynów 1i, 20-708, Lublin, Poland
| | - Anne Kokel
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd, Boston, MA, 02125, USA
| | - William Horton
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd, Boston, MA, 02125, USA
| | - Ewa Gizińska
- Department of Molecular Biology, The John Paul II Catholic University of Lublin, ul. Konstantynów 1i, 20-708, Lublin, Poland
| | - Garima Pandey
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd, Boston, MA, 02125, USA
| | - Ryszard Szyszka
- Department of Molecular Biology, The John Paul II Catholic University of Lublin, ul. Konstantynów 1i, 20-708, Lublin, Poland
| | - Béla Török
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd, Boston, MA, 02125, USA
| | - Marianna Török
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd, Boston, MA, 02125, USA
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141
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142
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Pasieka A, Panek D, Jończyk J, Godyń J, Szałaj N, Latacz G, Tabor J, Mezeiova E, Chantegreil F, Dias J, Knez D, Lu J, Pi R, Korabecny J, Brazzolotto X, Gobec S, Höfner G, Wanner K, Więckowska A, Malawska B. Discovery of multifunctional anti-Alzheimer's agents with a unique mechanism of action including inhibition of the enzyme butyrylcholinesterase and γ-aminobutyric acid transporters. Eur J Med Chem 2021; 218:113397. [PMID: 33838585 DOI: 10.1016/j.ejmech.2021.113397] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/17/2021] [Accepted: 03/18/2021] [Indexed: 12/31/2022]
Abstract
Looking for an effective anti-Alzheimer's agent is very challenging; however, a multifunctional ligand strategy may be a promising solution for the treatment of this complex disease. We herein present the design, synthesis and biological evaluation of novel hydroxyethylamine derivatives displaying unique, multiple properties that have not been previously reported. The original mechanism of action combines inhibitory activity against disease-modifying targets: β-secretase enzyme (BACE1) and amyloid β (Aβ) aggregation, along with an effect on targets associated with symptom relief - inhibition of butyrylcholinesterase (BuChE) and γ-aminobutyric acid transporters (GATs). Among the obtained molecules, compound 36 exhibited the most balanced and broad activity profile (eeAChE IC50 = 2.86 μM; eqBuChE IC50 = 60 nM; hBuChE IC50 = 20 nM; hBACE1 IC50 = 5.9 μM; inhibition of Aβ aggregation = 57.9% at 10 μM; mGAT1 IC50 = 10.96 μM; and mGAT2 IC50 = 19.05 μM). Moreover, we also identified 31 as the most potent mGAT4 and hGAT3 inhibitor (IC50 = 5.01 μM and IC50 = 2.95 μM, respectively), with high selectivity over other subtypes. Compounds 36 and 31 represent new anti-Alzheimer agents that can ameliorate cognitive decline and modify the progress of disease.
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Affiliation(s)
- Anna Pasieka
- Department of Physicochemical Drug Analysis, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland
| | - Dawid Panek
- Department of Physicochemical Drug Analysis, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland
| | - Jakub Jończyk
- Department of Physicochemical Drug Analysis, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland
| | - Justyna Godyń
- Department of Physicochemical Drug Analysis, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland
| | - Natalia Szałaj
- Department of Physicochemical Drug Analysis, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland
| | - Gniewomir Latacz
- Department of Technology and Biotechnology of Drugs, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland
| | - Julia Tabor
- Department of Physicochemical Drug Analysis, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland
| | - Eva Mezeiova
- Biomedical Research Centre, University Hospital Hradec Kralove, Sokolska 581, 500 05, Hradec Kralove, Czech Republic
| | - Fabien Chantegreil
- Département de Toxicologie et Risques Chimiques, Institut de Recherche Biomédicale des Armées, 91223, Brétigny sur Orge, France
| | - José Dias
- Département de Toxicologie et Risques Chimiques, Institut de Recherche Biomédicale des Armées, 91223, Brétigny sur Orge, France
| | - Damijan Knez
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000, Ljubljana, Slovenia
| | - Junfeng Lu
- Department of Pharmacology & Toxicology, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Rongbiao Pi
- Department of Pharmacology & Toxicology, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Jan Korabecny
- Biomedical Research Centre, University Hospital Hradec Kralove, Sokolska 581, 500 05, Hradec Kralove, Czech Republic
| | - Xavier Brazzolotto
- Département de Toxicologie et Risques Chimiques, Institut de Recherche Biomédicale des Armées, 91223, Brétigny sur Orge, France
| | - Stanislav Gobec
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000, Ljubljana, Slovenia
| | - Georg Höfner
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians-Universität München, Butenandtstr, 5-13, 81377, Munich, Germany
| | - Klaus Wanner
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians-Universität München, Butenandtstr, 5-13, 81377, Munich, Germany
| | - Anna Więckowska
- Department of Physicochemical Drug Analysis, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland
| | - Barbara Malawska
- Department of Physicochemical Drug Analysis, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland.
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143
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Ma X, Zhou Y, Yuan X, Miao Y, Zhao Q, Hua J, Ma P. An organic–inorganic hybrid nanoscale phosphotungstate with reactive oxygen species catalytic ability. INORG NANO-MET CHEM 2021. [DOI: 10.1080/24701556.2020.1789997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Xiang Ma
- Chemistry and Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, P. R. China
| | - Yingjie Zhou
- Chemistry and Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, P. R. China
| | - Xinru Yuan
- Chemistry and Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, P. R. China
| | - Yujie Miao
- Chemistry and Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, P. R. China
| | - Qiang Zhao
- Chemistry and Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, P. R. China
| | - Jiai Hua
- Chemistry and Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, P. R. China
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, P. R. China
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan, P. R. China
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144
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Maity D, Howarth M, Vogel MC, Magzoub M, Hamilton AD. Peptidomimetic-Based Vesicles Inhibit Amyloid-β Fibrillation and Attenuate Cytotoxicity. J Am Chem Soc 2021; 143:3086-3093. [PMID: 33600171 DOI: 10.1021/jacs.0c09967] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An interruption in Aβ homeostasis leads to the deposit of neurotoxic amyloid plaques and is associated with Alzheimer's disease. A supramolecular strategy based on the assembly of peptidomimetic agents into functional vesicles has been conceived for the simultaneous inhibition of Aβ42 fibrillation and expedited clearance of Aβ42 aggregates. Tris-pyrrolamide peptidomimetic, ADH-353, contains one hydrophobic N-butyl and two hydrophilic N-propylamine side chains and readily forms vesicles under physiological conditions. These vesicles completely rescue both mouse neuroblastoma N2a and human neuroblastoma SH-SY5Y cells from the cytotoxicity that follows from Aβ42 misfolding likely in mitochondria. Biophysical studies, including confocal imaging, demonstrate the biocompatibility and selectivity of the approach toward this aberrant protein assembly in cellular milieu.
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Affiliation(s)
- Debabrata Maity
- Department of Chemistry, New York University, New York, New York 10003, United States
| | - Madeline Howarth
- Biology Program, New York University Abu Dhabi, P.O. Box 129188, Saadiyat Island Campus, Abu Dhabi, United Arab Emirates
| | - Maria C Vogel
- Biology Program, New York University Abu Dhabi, P.O. Box 129188, Saadiyat Island Campus, Abu Dhabi, United Arab Emirates
| | - Mazin Magzoub
- Biology Program, New York University Abu Dhabi, P.O. Box 129188, Saadiyat Island Campus, Abu Dhabi, United Arab Emirates
| | - Andrew D Hamilton
- Department of Chemistry, New York University, New York, New York 10003, United States
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145
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Malankar GS, Sakunthala A, Navalkar A, Maji SK, Raju S, Manjare ST. Organoselenium-based BOPHY as a sensor for detection of hypochlorous acid in mammalian cells. Anal Chim Acta 2021; 1150:338205. [DOI: 10.1016/j.aca.2021.338205] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 01/03/2021] [Accepted: 01/04/2021] [Indexed: 02/08/2023]
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146
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Lin Y, Zhang D, Li L, Zhang Y. Novel Multifunctional Hybrid Molecules Constructed from β‐Carboline and Naphthalene Anhydride: Aggregation, Deaggregation and Fluorescence Detection. ChemistrySelect 2021. [DOI: 10.1002/slct.202004344] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Yonggang Lin
- Shaanxi Key Laboratory of Catalysis, College of Chemistry and Environment Science Shaanxi University of Technology Hanzhong 723001 China
| | - Dan Zhang
- Shaanxi Key Laboratory of Catalysis, College of Chemistry and Environment Science Shaanxi University of Technology Hanzhong 723001 China
| | - Le Li
- Shaanxi Key Laboratory of Industrial Automation College of Mechanical Engineering, Shaanxi University of Technology Hanzhong 723001 China
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147
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Zhu J, Liu X, Zheng J, Jiang D. Tuning the conformation of G-quadruplexes by sodium and potassium ions: application to photometric and fluorometric determination of amyloid β(1-40). Mikrochim Acta 2021; 188:98. [PMID: 33624166 DOI: 10.1007/s00604-021-04736-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 01/28/2021] [Indexed: 11/26/2022]
Abstract
A dual channel method is described for the determination of the amyloid-β peptide Aβ(1-40) that is associated with Alzheimer's disease. The method exploits (a) conformational changes of a G-quadruplex that are triggered by Na+ and K+ ions and (b) the strong affinity between Aβ(1-40) and Cu2+. A G-quadruplex DNA forms an antiparallel structure in the presence of Na+ and can catalyze the oxidation of tetramethylbenzidine by H2O2 system in the presence of Cu2+ to form a visible blue color. If, however, Cu2+ binds to Aβ(1-40), the blue color is no longer formed. Measuring the absorption decrease at 452 nm, the determination of Aβ(1-40) is realized. If K+ is added to the Na+-containing buffer, the antiparallel G-quadruplex DNA is transformed to parallel. This leads to the insertion of protoporphyrin IX (PPIX) into the G-quadruplex and generates enhanced fluorescent signal, with excitation/emission wavelength at 410/630 nm. The G-quadruplex then catalyzes the metalation of PPIX by Cu2+, and the fluorescence intensity decreases. In the presence of Aβ(1-40), the formation of Aβ(1-40)-Cu2+ triggers the recovery of the fluorescence. The Na+/K+-induced tuning of the conformation of the G-quadruplex with the same sequence enables dual (colorimetric and fluorometric) determination of Aβ(1-40), with detection limits of 4.9 pM and 2.3 pM, respectively. The cost is quite low since the developed strategy is label free and enzyme free by using low-cost DNA and Cu2+. More importantly, the dual channel determination operation is very simple without any further modification process. Tuning the conformation of G-quadruplexes by sodium(I) and potassium(I): application to photometric and fluorometric determination of amyloid β(1-40).
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Affiliation(s)
- Jing Zhu
- College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, People's Republic of China.
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, 476000, People's Republic of China.
| | - Xia Liu
- College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, People's Republic of China
| | - Jinxue Zheng
- College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, People's Republic of China
| | - Dafeng Jiang
- Department of Physical and Chemical Testing, Shandong Center for Disease Control and Prevention, Jinan, People's Republic of China.
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148
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Peng Y, Yuan M, Xin J, Liu X, Wang J. Screening novel drug candidates for Alzheimer's disease by an integrated network and transcriptome analysis. Bioinformatics 2021; 36:4626-4632. [PMID: 32516365 DOI: 10.1093/bioinformatics/btaa563] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 05/10/2020] [Accepted: 06/03/2020] [Indexed: 02/06/2023] Open
Abstract
MOTIVATION Alzheimer's disease (AD) is a serious degenerative brain disease and the most common cause of dementia. The current available drugs for AD provide symptomatic benefit, but there is no effective drug to cure the disease. The emergence of large-scale genomic, pharmacological data provides new opportunities for drug discovery and drug repositioning as a promising strategy in searching novel drug for AD. RESULTS In this study, we took advantage of our increasing understanding based on systems biology approaches on the pathway and network levels and perturbation datasets from the Library of Integrated Network-Based Cellular Signatures to introduce a systematic computational process to discover new drugs implicated in AD. First, we collected 561 genes that have reported to be risk genes of AD, and applied functional enrichment analysis on these genes. Then, by quantifying proximity between 5595 molecule drugs and AD based on human interactome, we filtered out 1092 drugs that were proximal to the disease. We further performed an Inverted Gene Set Enrichment analysis on these drug candidates, which allowed us to estimate effect of perturbations on gene expression and identify 24 potential drug candidates for AD treatment. Results from this study also provided insights for understanding the molecular mechanisms underlying AD. As a useful systematic method, our approach can also be used to identify efficacious therapies for other complex diseases. AVAILABILITY AND IMPLEMENTATION The source code is available at https://github.com/zer0o0/drug-repo.git. SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Yonglin Peng
- School of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin 300070 China
| | - Meng Yuan
- School of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin 300070 China
| | - Juncai Xin
- School of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin 300070 China
| | - Xinhua Liu
- School of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin 300070 China
| | - Ju Wang
- School of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin 300070 China
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149
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Akawa OB, Subair TI, Soremekun OS, Olotu FA, Soliman MES. Structural alterations in the catalytic core of hSIRT2 enzyme predict therapeutic benefits of Garcinia mangostana derivatives in Alzheimer's disease: molecular dynamics simulation study. RSC Adv 2021; 11:8003-8018. [PMID: 35423339 PMCID: PMC8695224 DOI: 10.1039/d0ra10459k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Accepted: 02/03/2021] [Indexed: 12/15/2022] Open
Abstract
Recent studies have shown that inhibition of the hSIRT2 enzyme provides favorable effects in neurodegenerative diseases such as Alzheimer's disease. Prenylated xanthone phytochemicals including α-mangostin, β-mangostin and γ-mangostin obtained from Garcinia mangostana, a well-established tropical plant, have been shown experimentally to inhibit sirtuin enzymatic activity. However, the molecular mechanism of this sirtuin inhibition has not been reported. Using comprehensive integrated computational techniques, we provide molecular and timewise dynamical insights into the structural alterations capable of facilitating therapeutically beneficial effects of these phytochemicals at the catalytic core of the hSIRT2 enzyme. Findings revealed the enhanced conformational stability and compactness of the hSIRT2 catalytic core upon binding of γ-mangostin relative to the apoenzyme and better than α-mangostin and β-mangostin. Although thermodynamic calculations revealed favorable binding of all the phytochemicals to the hSIRT2 enzyme, the presence of only hydroxy functional groups on γ-mangostin facilitated the occurrence of additional hydrogen bonds involving Pro115, Phe119, Asn168 and His187 which are absent in α-mangostin- and β-mangostin-bound systems. Per-residue energy contributions showed that van der Waals and more importantly electrostatic interactions are involved in catalytic core stability with Phe96, Tyr104 and Phe235 notably contributing π-π stacking, π-π T shaped and π-sigma interactions. Cumulatively, our study revealed the structural alterations leading to inhibition of hSIRT2 catalysis and findings from this study could be significantly important for the future design and development of sirtuin inhibitors in the management of Alzheimer's disease.
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Affiliation(s)
- Oluwole B Akawa
- Molecular Bio-computation and Drug Design Laboratory, School of Health Sciences, University of KwaZulu-Natal Westville Campus Durban 4001 South Africa http://soliman.ukzn.ac.za +27 31 260 7872 +27 31 260 8048
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, Afe Babalola University Ado Ekiti Nigeria
| | - Temitayo I Subair
- Molecular Bio-computation and Drug Design Laboratory, School of Health Sciences, University of KwaZulu-Natal Westville Campus Durban 4001 South Africa http://soliman.ukzn.ac.za +27 31 260 7872 +27 31 260 8048
| | - Opeyemi S Soremekun
- Molecular Bio-computation and Drug Design Laboratory, School of Health Sciences, University of KwaZulu-Natal Westville Campus Durban 4001 South Africa http://soliman.ukzn.ac.za +27 31 260 7872 +27 31 260 8048
| | - Fisayo A Olotu
- Molecular Bio-computation and Drug Design Laboratory, School of Health Sciences, University of KwaZulu-Natal Westville Campus Durban 4001 South Africa http://soliman.ukzn.ac.za +27 31 260 7872 +27 31 260 8048
| | - Mahmoud E S Soliman
- Molecular Bio-computation and Drug Design Laboratory, School of Health Sciences, University of KwaZulu-Natal Westville Campus Durban 4001 South Africa http://soliman.ukzn.ac.za +27 31 260 7872 +27 31 260 8048
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150
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Pavlidis N, Kofinas A, Papanikolaou MG, Miras HN, Drouza C, Kalampounias AG, Kabanos TA, Konstandi M, Leondaritis G. Synthesis, characterization and pharmacological evaluation of quinoline derivatives and their complexes with copper(ΙΙ) in in vitro cell models of Alzheimer's disease. J Inorg Biochem 2021; 217:111393. [PMID: 33610031 DOI: 10.1016/j.jinorgbio.2021.111393] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 01/30/2021] [Accepted: 02/05/2021] [Indexed: 12/17/2022]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder of the central nervous system. The main pathophysiological mechanisms involve cholinergic neurotransmission, beta-amyloid (Αβ) and Tau proteins, several metal ions and oxidative stress, among others. Current drugs offer only relief of symptoms and not a cure of AD. Accumulating evidence suggests that multifunctional compounds, targeting multiple pathophysiological mechanisms, may have a great potential for the treatment of AD. In this study, we report on the synthesis and physicochemical characterization of four quinoline-based metal chelators and their respective copper(II) complexes. Most compounds were non-toxic at concentrations ≤5 μM. In neuroprotection studies employing undifferentiated and differentiated SH-SY5Y cells, the metal chelator N2,N6-di(quinolin-8-yl)pyridine-2,6-dicarboxamide (H2dqpyca) appeared to exert significant neuroprotection against both, Aβ peptide- and H2O2-induced toxicities. The copper(II) complex [CuII(H2bqch)Cl2].3H2O (H2bqch = N,N'-Bis(8-quinolyl)cyclohexane-1,2-diamine) also protected against H2O2-induced toxicity, with a half-maximal effective concentration of 80 nM. Molecular docking simulations, using the crystal structure of the acetylcholinesterase (AChE)-rivastigmine complex as a template, indicated a strong interaction of the metal chelator H2dqpyca, followed by H2bqch, with both the peripheral anionic site and the catalytic active site of AChE. In conclusion, the sufficient neuroprotection provided by the metal chelator H2dqpyca and the copper(II) complex [CuII(H2bqch)Cl2].3H2O along with the evidence for interaction between H2dqpyca and AChE, indicate that these compounds have the potential and should be further investigated in the framework of preclinical studies employing animal models of AD as candidate multifunctional lead compounds for the treatment of the disease.
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Affiliation(s)
- Nikolaos Pavlidis
- Department of Pharmacology, Faculty of Medicine, University of Ioannina, Ioannina 45110, Greece; Section of Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, Ioannina 45110, Greece.
| | - Aristeidis Kofinas
- Department of Pharmacology, Faculty of Medicine, University of Ioannina, Ioannina 45110, Greece.
| | - Michael G Papanikolaou
- Section of Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, Ioannina 45110, Greece.
| | - Haralampos N Miras
- West CHEM, School of Chemistry, University of Glasgow, Glasgow G12 8QQ, UK.
| | - Chryssoula Drouza
- Department of Agricultural Sciences, Biotechnology and Food Science, Cyprus University of Technology, Limassol 3036, Cyprus.
| | - Angelos G Kalampounias
- Physical Chemistry Laboratory, Department of Chemistry, University of Ioannina, Ioannina 45110, Greece; Institute of Materials Science and Computing, University Research Center of Ioannina (URCI), Ioannina 45110, Greece.
| | - Themistoklis A Kabanos
- Section of Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, Ioannina 45110, Greece.
| | - Maria Konstandi
- Department of Pharmacology, Faculty of Medicine, University of Ioannina, Ioannina 45110, Greece.
| | - George Leondaritis
- Department of Pharmacology, Faculty of Medicine, University of Ioannina, Ioannina 45110, Greece.
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