1
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Sun B, Jiang H. Synthesis and bio-activities of bifunctional tetrahydrosalen Cu (II) chelators with potential efficacy in Alzheimer's disease therapy. J Inorg Biochem 2024; 259:112636. [PMID: 38943843 DOI: 10.1016/j.jinorgbio.2024.112636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 05/21/2024] [Accepted: 06/04/2024] [Indexed: 07/01/2024]
Abstract
The dyshomeostasis of metal ions in the brain leads to the accumulation of excess metals in extracellular and inter-neuronal locations and the Amyloid β peptide (Aβ) binds these transition metals, which ultimately cause the Aβ aggregation and severe oxidative stress in the brain. The aggregation of Aβ and oxidative stress are important factors to trigger Alzheimer's disease (AD). Metal chelation therapy is a promising approach to removing metals from Aβ-M species and relieve the oxidative stress. Therefore, 4 tetrahydrosalens containing benzothiazole moiety were designed and synthesized. Their biological activities for Alzheimer's disease therapy in vitro were determined by Turbidity assay, BCA protein assay, MTT assay and fluorescent probe of DCFH-DA. The results were comparing with that of non-specific chelator (cliquinol, CQ) and non-benzothiazole functionalized tetrahydrosalens, the results demonstrated that benzothiazole functionalized chelators had more efficient bio-activities in preventing Cu2+-induced Aβ aggregation, attenuating cytotoxicity mediated by Aβ-Cu2+ species and decrease the level of reactive oxygen species (ROS) in Cu2+-Aβ treated PC12 cells than that of cliquinol and non-benzothiazole functionalized analogues.
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Affiliation(s)
- Bin Sun
- Key Laboratory of Natural Medicine Research of Chongqing Education Commission, Chongqing 400067, PR China; College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, PR China.
| | - Heyan Jiang
- College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, PR China
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2
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Navale GR, Ahmed I, Lim MH, Ghosh K. Transition Metal Complexes as Therapeutics: A New Frontier in Combatting Neurodegenerative Disorders through Protein Aggregation Modulation. Adv Healthc Mater 2024:e2401991. [PMID: 39221545 DOI: 10.1002/adhm.202401991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 08/17/2024] [Indexed: 09/04/2024]
Abstract
Neurodegenerative disorders (NDDs) are a class of debilitating diseases that progressively impair the protein structure and result in neurological dysfunction in the nervous system. Among these disorders, Alzheimer's disease (AD), prion diseases such as Creutzfeldt-Jakob disease (CJD), and Parkinson's disease (PD) are caused by protein misfolding and aggregation at the cellular level. In recent years, transition metal complexes have gained significant attention for their potential applications in diagnosing, imaging, and curing these NDDs. These complexes have intriguing possibilities as therapeutics due to their diverse ligand systems and chemical properties and can interact with biological systems with minimal detrimental effects. This review focuses on the recent progress in transition metal therapeutics as a new era of hope in the battle against AD, CJD, and PD by modulating protein aggregation in vitro and in vivo. It may shed revolutionary insights into unlocking new opportunities for researchers to develop metal-based drugs to combat NDDs.
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Affiliation(s)
- Govinda R Navale
- Department of Chemistry, Indian Institute of Chemistry Roorkee, Roorkee, 247667, India
| | - Imtiaz Ahmed
- Department of Chemistry, Indian Institute of Chemistry Roorkee, Roorkee, 247667, India
| | - Mi Hee Lim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Kaushik Ghosh
- Department of Chemistry, Indian Institute of Chemistry Roorkee, Roorkee, 247667, India
- Department of Biosciences and Bioengineering, Indian Institute of Technology, Roorkee, 247667, India
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3
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Terpstra K, Huang Y, Na H, Sun L, Gutierrez C, Yu Z, Mirica LM. 2-Phenylbenzothiazolyl iridium complexes as inhibitors and probes of amyloid β aggregation. Dalton Trans 2024; 53:14258-14264. [PMID: 39129539 PMCID: PMC11445708 DOI: 10.1039/d4dt01691b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/13/2024]
Abstract
The aggregation of amyloid β (Aβ) peptides is a significant hallmark of Alzheimer's disease (AD), and the detection of Aβ aggregates and the inhibition of their formation are important for the diagnosis and treatment of AD, respectively. Herein, we report a series of benzothiazole-based Ir(III) complexes HN-1 to HN-8 that exhibit appreciable inhibition of Aβ aggregation in vitro and in living cells. These Ir(III) complexes can induce a significant fluorescence increase when binding to Aβ fibrils and Aβ oligomers, while their measured log D values suggest these compounds could have enhanced blood-brain barrier (BBB) permeability. In vivo studies show that HN-1, HN-2, HN-3, and HN-8 successfully penetrate the BBB and stain the amyloid plaques in AD mouse brains after a 10-day treatment, suggesting that these Ir(III) complexes could act as lead compounds for AD therapeutic and diagnostic agent development.
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Affiliation(s)
- Karna Terpstra
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, USA.
| | - Yiran Huang
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, USA.
| | - Hanah Na
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, USA.
| | - Liang Sun
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, USA.
| | - Citlali Gutierrez
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, USA.
| | - Zhengxin Yu
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, USA.
| | - Liviu M Mirica
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, USA.
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4
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Hacker RM, Grimard DM, Morgan KA, Saleh E, Wrublik MM, Meiss CJ, Kant CC, Jones MA, Brennessel WW, Webb MI. Ru(II)-arene azole complexes as anti-amyloid-β agents. Dalton Trans 2024. [PMID: 39093049 DOI: 10.1039/d4dt01740d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
With the recent clinical success of anti-amyloid-β (Aβ) monoclonal antibodies, there is a renewed interest in agents which target the Aβ peptide of Alzheimer's disease (AD). Metal complexes are particularly well-suited for this development, given their structural versatility and ability to form stabile interactions with soluble Aβ. In this report, a small series of ruthenium-arene complexes were evaluated for their respective ability to modulate both the aggregation and cytotoxicity of Aβ. First, the stability of the complexes was evaluated in a variety of aqueous media where the complexes demonstrated exceptional stability. Next, the ability to coordinate and modulate the Aβ peptide was evaluated using several spectroscopic methods, including thioflavin T (ThT) fluorescence, dynamic light scattering (DLS), and transmission electron microscopy (TEM). Overall, the complex RuBO consistently gave the greatest inhibitory action towards Aβ aggregation, which correlated with its ability to coordinate to Aβ in solution. Furthermore, RuBO also had the lowest affinity for serum albumin, which is a key consideration for a neurotherapeutic, as this protein does not cross the blood brain barrier. Lastly, RuBO also displayed promising neuroprotective properties, as it had the greatest inhibition of Aβ-inducted cytotoxicity.
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Affiliation(s)
- Ryan M Hacker
- Department of Chemistry and Biochemistry, SUNY Geneseo, Geneseo, NY, 14454, USA.
| | - Daniela M Grimard
- Department of Chemistry and Biochemistry, SUNY Geneseo, Geneseo, NY, 14454, USA.
| | - Katie A Morgan
- Department of Chemistry and Biochemistry, SUNY Geneseo, Geneseo, NY, 14454, USA.
| | - Eaman Saleh
- Department of Chemistry, Illinois State University, Normal, IL, 61790, USA
| | - Morgan M Wrublik
- Department of Chemistry, Illinois State University, Normal, IL, 61790, USA
| | - Cade J Meiss
- Department of Chemistry, Illinois State University, Normal, IL, 61790, USA
| | - Caitlyn C Kant
- Department of Chemistry, Illinois State University, Normal, IL, 61790, USA
| | - Marjorie A Jones
- Department of Chemistry, Illinois State University, Normal, IL, 61790, USA
| | | | - Michael I Webb
- Department of Chemistry and Biochemistry, SUNY Geneseo, Geneseo, NY, 14454, USA.
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5
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García-García A, Rojas S, Rodríguez-Diéguez A. Therapy and diagnosis of Alzheimer's disease: from discrete metal complexes to metal-organic frameworks. J Mater Chem B 2023; 11:7024-7040. [PMID: 37435638 DOI: 10.1039/d3tb00427a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2023]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder affecting 44 million people worldwide. Although many issues (pathogenesis, genetics, clinical features, and pathological aspects) are still unknown, this disease is characterized by noticeable hallmarks such as the formation of β-amyloid plaques, hyperphosphorylation of tau proteins, the overproduction of reactive oxygen species, and the reduction of acetylcholine levels. There is still no cure for AD and the current treatments are aimed at regulating the cholinesterase levels, attenuating symptoms temporarily rather than preventing the AD progression. In this context, coordination compounds are regarded as a promissing tool in AD treatment and/or diagnosis. Coordination compounds (discrete or polymeric) possess several features that make them an interesting option for developing new drugs for AD (good biocompatibility, porosity, synergetic effects of ligand-metal, fluorescence, particle size, homogeneity, monodispersity, etc.). This review discusses the recent progress in the development of novel discrete metal complexes and metal-organic frameworks (MOFs) for the treatment, diagnosis and theragnosis of AD. These advanced therapies for AD treatment are organized according to the target: Aβ peptides, hyperphosphorylated tau proteins, synaptic dysfunction, and mitochondrial failure with subsequent oxidative stress.
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Affiliation(s)
- Amalia García-García
- Department of Inorganic Chemistry, Faculty of Science, University of Granada, Av. Fuentenueva S/N, 18071 Granada, Spain.
- Centro de Química del Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, 18 sur & Av. San Claudio, Col. San Manuel, 72570 Puebla, Mexico
| | - Sara Rojas
- Department of Inorganic Chemistry, Faculty of Science, University of Granada, Av. Fuentenueva S/N, 18071 Granada, Spain.
| | - Antonio Rodríguez-Diéguez
- Department of Inorganic Chemistry, Faculty of Science, University of Granada, Av. Fuentenueva S/N, 18071 Granada, Spain.
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Yang L, Chen Y, Jia Z, Yuan X, Liu J. Electrostatic assembly of gold nanoparticle and metal-organic framework nanoparticles attenuates amyloid β aggregate-mediated neurotoxicity. J Mater Chem B 2023; 11:4453-4463. [PMID: 37158054 DOI: 10.1039/d3tb00281k] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The deposition of amyloid β (Aβ) is a conventional pathological hallmark of Alzheimer's disease (AD). Consequently, the inhibition of Aβ aggregation combined with the disaggregation of Aβ fibrils is an important therapeutic method for AD treatment. In this study, a gold nanoparticle-decorated porous metal organic framework MIL-101(Fe) (AuNPs@PEG@MIL-101) was created as an Aβ inhibitor. The high positively charged MIL-101 induced a high number of Aβ40 to be absorbed or aggregated on the surface of nanoparticles. In addition, AuNPs improved the surface property of MIL-101, causing it to uniformly bind Aβ monomers and Aβ fibrils. Thus, this framework can efficiently suppress extracellular Aβ monomer fibrillation and disrupt the preformed Aβ fibers. AuNPs@PEG@MIL-101 also decreases intracellular Aβ40 aggregation and the amount of Aβ40 immobilized on the cell membrane, thus protecting PC12 cells from Aβ40-induced microtubular defects and cell membrane damage. In summary, AuNPs@PEG@MIL-101 shows great potential for application in AD therapy.
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Affiliation(s)
- Licong Yang
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China.
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Yutong Chen
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China.
| | - Zhi Jia
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China.
| | - Xiaoyu Yuan
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China.
| | - Jie Liu
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China.
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7
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A Nanoenzyme Constructed from Manganese and Strandberg-Type Phosphomolybdate with Versatility in Antioxidant and Modulating Conformation of A β Protein Misfolding Aggregates In Vitro. Int J Mol Sci 2023; 24:ijms24054317. [PMID: 36901748 PMCID: PMC10002135 DOI: 10.3390/ijms24054317] [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: 12/21/2022] [Revised: 02/08/2023] [Accepted: 02/17/2023] [Indexed: 02/24/2023] Open
Abstract
Amyloid β-peptide (Aβ) misfolding aggregates with β-sheet structures and surplus reactive oxygen species (ROS) are both considered to be the culprit of neuronal toxicity in Alzheimer's disease (AD). Therefore, modulating the misfolding mode of Aβ and inhibiting ROS simultaneous has become an important method for anti-AD. Herein, a nanoscale manganese-substituted polyphosphomolybdate (H2en)3[Mn(H2O)4][Mn(H2O)3]2[P2Mo5O23]2·14.5H2O (abbreviated as MnPM) (en = ethanediamine) was designed and synthesized by single crystal to single crystal transformation method. MnPM can modulate the β-sheet rich conformation of Aβ aggregates, and thus reduce the formation of toxic species. Moreover, MnPM also possesses the ability to eliminate the free radicals produced by Cu2+-Aβ aggregates. It can inhibit the cytotoxicity of β-sheet-rich species and protect synapses of PC12 cells. MnPM combines the conformation modulating ability of Aβ and anti-oxidation ability, which makes a promising multi-funcational molecular with a composite mechanism for the new conceptual designing in treatment of such protein-misfolding diseases.
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8
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Zheng T, Huo Y, Wang Y, Du W. Regulation of oxaliplatin and carboplatin on the assembly behavior and cytotoxicity of human islet amyloid polypeptide. J Inorg Biochem 2022; 237:111989. [PMID: 36108345 DOI: 10.1016/j.jinorgbio.2022.111989] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 08/25/2022] [Accepted: 08/31/2022] [Indexed: 01/18/2023]
Abstract
Human islet amyloid polypeptide (hIAPP) is associated with the pathology of Type II diabetes (T2DM) due to its misfolding and amyloid deposition. The peptide is widely concerned as a potential drug target, and the prevention of hIAPP fibrillation is a rational therapeutic strategy for T2DM. Platinum complexes are promising anticancer agents with good biocompatibility, they can resist the aggregation of amyloid peptides, while the effects of oxaliplatin and carboplatin on hIAPP fibrillation are unknown. In the present work, we selected the two platinum drugs to reveal their inhibition and disaggregation against hIAPP fibrillation by various biophysical methods. The two complexes impeded hIAPP fibril formation and dispersed the aggregates into small oligomers and most monomers. They also reduced peptides oligomerization and promoted rat insulinoma β-cells viability. They bound to hIAPP mainly through metal coordination and hydrophobic interactions. Moreover, oxaliplatin showed better inhibition and regulation on peptides aggregation and cytotoxicity than carboplatin. This work is of important biomedical values for clinical platinum drugs against T2DM and other amyloidosis related diseases.
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Affiliation(s)
- Ting Zheng
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Yan Huo
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Yanan Wang
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Weihong Du
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
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9
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Hua J, Wei X, Li Y, Li L, Zhang H, Wang F, Zhang C, Ma X. A Cyclen-Functionalized Cobalt-Substituted Sandwich-Type Tungstoarsenate with Versatility in Removal of Methylene Blue and Anti-ROS-Sensitive Tumor Cells. Molecules 2022; 27:molecules27196451. [PMID: 36234988 PMCID: PMC9573041 DOI: 10.3390/molecules27196451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/25/2022] [Accepted: 09/27/2022] [Indexed: 11/07/2022] Open
Abstract
Oxidative degradation by using reactive oxygen species (ROS) is an effective method to treat pollutants. The synthesis of artificial oxidase for the degradation of dyes is a hot spot in molecular science. In this study, a nanoscale sandwich-type polyoxometalate (POM) on the basis of a tetra-nuclear cobalt cluster and trivacant B-α-Keggin-type tungstoarsenate {[Co(C8H20N4)]4}{Co4(H2O)2[HAsW9O34]2}∙4H2O (abbreviated as CAW, C8H20N4 = cyclen) has been synthesized and structurally examined by infrared (IR) spectrum, ultraviolet–visible (UV–Vis) spectrum, X-ray photoelectron spectrum (XPS), single-crystal X-ray diffraction (SXRD), and bond valence sum (Σs) calculation. According to the structural analysis, the principal element of the CAW is derived from modifying sandwich-type polyanion {Co4(H2O)2 [HAsW9O34]2}8– with four [Co(Cyclen)]2+, in which 1,4,7,10-tetraazacyclododecane (cyclen) is firstly applied to modify POM. It is also demonstrated that CAW is capable of efficiently catalyzing the production of ROS by the synergistic effects of POM fragments and Co–cyclen complexes. Moreover, CAW can interfere with the morphology and proliferation of sensitive cells by producing ROS and exhibits ability in specifically eliminating methylene blue (MB) dyes from the solution system by both adsorption and catalytic oxidation.
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Affiliation(s)
- Jiai Hua
- Chemistry and Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan 030008, China
- Laboratory of Biochemistry and Pharmacy, Taiyuan Institute of Technology, Taiyuan 030008, China
| | - Xueman Wei
- Department of Geriatrics, First Affiliated Hospital of Naval Medical University, Shanghai 200081, China
| | - Yifeng Li
- Chemistry and Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan 030008, China
| | - Lingzhi Li
- Laboratory of Biochemistry and Pharmacy, Taiyuan Institute of Technology, Taiyuan 030008, China
| | - Hui Zhang
- Chemistry and Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan 030008, China
| | - Feng Wang
- Laboratory of Biochemistry and Pharmacy, Taiyuan Institute of Technology, Taiyuan 030008, China
- Correspondence: (F.W.); (C.Z.); (X.M.); Tel.: +86-351-356-9476 (X.M.)
| | - Changli Zhang
- School of Environmental Science, Nanjing Xiaozhuang University, Nanjing 211171, China
- Correspondence: (F.W.); (C.Z.); (X.M.); Tel.: +86-351-356-9476 (X.M.)
| | - Xiang Ma
- Chemistry and Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan 030008, China
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
- Correspondence: (F.W.); (C.Z.); (X.M.); Tel.: +86-351-356-9476 (X.M.)
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10
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Guin PS, Roy S. Recently Reported Ru-Metal Organic Coordination Complexes and Their Application (A Review). RUSS J GEN CHEM+ 2022. [DOI: 10.1134/s1070363222080242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Yang L, Cui Y, Liang H, Li Z, Wang N, Wang Y, Zheng G. Multifunctional Selenium Nanoparticles with Different Surface Modifications Ameliorate Neuroinflammation through the Gut Microbiota-NLRP3 Inflammasome-Brain Axis in APP/PS1 Mice. ACS APPLIED MATERIALS & INTERFACES 2022; 14:30557-30570. [PMID: 35758423 DOI: 10.1021/acsami.2c06283] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Neuroinflammation plays a critical role in Alzheimer's disease (AD). However, it is still unknown if neuroinflammation can be effectively treated using selenium nanoparticles (SeNPs) with different surface modifications. In this study, SeNPs were coated with dihydromyricetin (DMY), a natural polyphenol, to obtain DMY@SeNPs. Given that DMY@SeNPs are unstable under physiological conditions, they were decorated step-by-step with chitosan (CS/DMY@SeNPs) and with the blood brain barrier (BBB) targeting peptide Tg (TGNYKALHPHNG) to yield Tg-CS/DMY@SeNPs, which significantly reduced the aggregation of Aβ and improved the anti-inflammatory effects of SeNPs in vitro. The mechanisms of CS/DMY@SeNPs and Tg-CS/DMY@SeNPs on regulating neuroinflammation are different. Only Tg-CS/DMY@SeNPs can cross the BBB; therefore, Tg-CS/DMY@SeNPs more successfully inhibited Aβ aggregation and reduced inflammatory cytokine secretion via the NF-κB pathway in the brain of APP/PS1 mice compared to CS/DMY@SeNPs. Furthermore, both types of nanoparticles, however, were able to repair the gut barrier and regulate the population of inflammatory-related gut microbiota such as Bifidobacterium, Dubosiella, and Desulfovibrio. Of note, the relative abundance of Gordonibacter was only enhanced by Tg-CS/DMY@SeNPs, thereby downregulating the protein expression of the NLRP3 inflammasome and the concentrations of serum inflammatory factors. This demonstrates that Tg-CS/DMY@SeNPs ameliorate neuroinflammation through the gut microbiota-NLRP3 inflammasome-brain axis. Overall, our data suggest that Tg-CS/DMY@SeNPs are an ideal drug candidate for AD treatment.
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Affiliation(s)
- Licong Yang
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Yanan Cui
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Hanji Liang
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang 330045, China
| | - Zhiwei Li
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang 330045, China
| | - Na Wang
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang 330045, China
| | - Yabin Wang
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang 330045, China
| | - Guodong Zheng
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang 330045, China
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12
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A Novel Tri-Coordination Zinc Complex Functionalized Silicotungstate with ROS Catalytic Ability and Anti-Tumor Cells Activity. Catalysts 2022. [DOI: 10.3390/catal12070695] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Reactive oxygen species (ROS) can be used as an effective method to treat tumors. Artificial oxidase has received increasing attention as a catalyst for ROS generation in fields ranging from bioinorganic chemistry to pharmaceutical chemistry. In this study, an artificial oxidase based on a binuclear zinc complex and Keggin-type silicotungstate [Zn2(4,4′-bpy)(Phen)2][SiW12O40] (ZSW) (4,4′-bpy = 4,4′-bipyridine; Phen = 1,10-phenanthroline) was synthesized and structurally featured in terms of its X-ray photoelectron spectrum (XPS), bond valence sum (Σs) calculation, IR spectra, and single-crystal X-ray diffraction (SXRD). ZSW is an ionic compound in which the cation is a binuclear zinc complex [Zn2(4,4′-bpy)(Phen)2]4+ and the anion is a α-Keggin-type silicotungstate [SiW12O40]4– cluster. Notably, the Zn ions in the [Zn2(4,4′-bpy)(Phen)2] exist in tri-coordination, which was first obtained in polyoxometalate (POM) chemistry. It was also demonstrated that ZSW is capable of efficiently catalyzing the production of ROS, which, according to the computational calculations, may be due to the synergistic action of zinc complexes and POM building blocks. Furthermore, ZSW exhibited inhibition ability toward ROS-sensitive tumor cells, such as PC12 cells.
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Hua J, Wei X, Ma X, Jiao J, Chai B, Wu C, Zhang C, Niu Y. A {Cd4Cl2O14} cluster functionalized sandwich-type tungsto-arsenate as conformation modulator for misfolding Aβ peptide. CrystEngComm 2022. [DOI: 10.1039/d1ce01637g] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A nanoscale polyoxometalate {[H2dap]6[Cd4Cl2(B-α-AsW9O34)2]} based on tetra-Cd cluster sandwiched trivacant Keggin-type tungstoarsenate was successfully designed and synthesized. It can modulate the β-sheet-rich fibrils of Aβ peptide efficiently; and thus inhibits...
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14
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Hua J, Wei X, Bian Y, Ma X, Hao L, Sun J, Fan J, Niu Y, Wang Y. A nanoscale polymolybdate builded by two hexavacant Keggin-type fragments via a novel {Ca6P6O38} cluster with β-sheet conformation modulation ability. CrystEngComm 2022. [DOI: 10.1039/d2ce00215a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel sandwich-type phosphomolybdate based on two hexavacant Keggin-type building block [PMo6O28]15– incorporating a novel hexagonal calcium phosphorus oxygen cluster {Ca6P6O38} was successfully synthesized. It can modulate the β-sheet-rich misfolding...
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15
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Rubio N, Au H, Coulter GO, Guetaz L, Gebel G, Mattevi C, Shaffer MSP. Effect of graphene flake size on functionalisation: quantifying reaction extent and imaging locus with single Pt atom tags. Chem Sci 2021; 12:14907-14919. [PMID: 34820107 PMCID: PMC8597866 DOI: 10.1039/d1sc01958a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 10/20/2021] [Indexed: 11/21/2022] Open
Abstract
Here, the locus of functionalisation on graphene-related materials and the progress of the reaction is shown to depend strongly on the starting feedstock. Five characteristically different graphite sources were exfoliated and functionalized using a non-destructive chemical reduction method. These archetypical examples were compared via a model reaction, grafting dodecyl addends, evaluated with TGA-MS, XPS and Raman data. A general increase in grafting ratio (ranging from 1.1 wt% up to 25 wt%) and an improvement in grafting stoichiometry (C/R) were observed as flake radius decreased. Raman spectrum imaging of the functionalised natural flake graphite identified that grafting is directed towards flake edges. This behaviour was further corroborated, at atomistic resolution, by functionalising the graphene layers with bipyridine groups able to complex single platinum atoms. The distribution of these groups was then directly imaged using aberration-corrected HAADF-STEM. Platinum atoms were found to be homogeneously distributed across smaller graphenes; in contrast, a more heterogeneous distribution, with a predominance of edge grafting was observed for larger graphites. These observations show that grafting is directed towards flake edges, but not necessary at edge sites; the mechanism is attributed to the relative inaccessibility of the inner basal plane to reactive moieties, resulting in kinetically driven grafting nearer flake edges. This phenomenology may be relevant to a wide range of reactions on graphenes and other 2d materials.
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Affiliation(s)
- Noelia Rubio
- Departments of Chemistry & Materials, Imperial College London London UK
| | - Heather Au
- Departments of Chemistry & Materials, Imperial College London London UK
- Department of Chemical Engineering, Imperial College London London UK
| | - Gabriel O Coulter
- Departments of Chemistry & Materials, Imperial College London London UK
| | - Laure Guetaz
- University Grenoble Alpes, CEA, LITEN 38054 Grenoble Cedex 9 France
| | - Gerard Gebel
- University Grenoble Alpes, CEA, LITEN 38054 Grenoble Cedex 9 France
| | | | - Milo S P Shaffer
- Departments of Chemistry & Materials, Imperial College London London UK
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16
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Xie Y, Wang Y, Jiang S, Xiang X, Wang J, Ning L. Novel strategies for the fight of Alzheimer's disease targeting amyloid-β protein. J Drug Target 2021; 30:259-268. [PMID: 34435898 DOI: 10.1080/1061186x.2021.1973482] [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] [Indexed: 12/15/2022]
Abstract
Alzheimer's disease (AD), which is recognised as a devastating neurodegenerative disease throughout the world and lack of effective treatments, is a growing concern in modern society with a growing population of elderly patients. A growing number of studies reveal that abnormal accumulation and deposition of Aβ is responsible for AD. Inspired by this, strategies for the treatment of AD targeting-Aβ clearance have been discussed for a long period, exploring new drugs which is capable of destroying soluble Aβ oligomers and unsolvable Aβ aggregates. In this paper, results of recent clinical trials on several anti-amyloid-β drugs are presented and several emerging anti-amyloid AD therapies based on recent studies are reviewed. Furthermore, some of the current challenges and novel strategies to prevent AD are addressed. Herein, this review focuses on current pharmacotherapy of AD targeting-Aβ and intends to design a promising therapeutic agent for AD treatment.
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Affiliation(s)
- Yang Xie
- Pharmaceutical Engineering Center, Chongqing Medical and Pharmaceutical College, Chongqing, China
| | - Yan Wang
- Chemistry and Chemical Engineering College, Huangshan University, Huangshan, China
| | - Shangfei Jiang
- Pharmaceutical Engineering Center, Chongqing Medical and Pharmaceutical College, Chongqing, China
| | - Xiaohong Xiang
- Pharmaceutical Engineering Center, Chongqing Medical and Pharmaceutical College, Chongqing, China
| | - Jianhua Wang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education College of Bioengineering, Chongqing University, Chongqing, China
| | - Linhong Ning
- Pharmaceutical Engineering Center, Chongqing Medical and Pharmaceutical College, Chongqing, China
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17
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Xian C, Chen H, Xiong F, Fang Y, Huang H, Wu J. Platinum-based chemotherapy via nanocarriers and co-delivery of multiple drugs. Biomater Sci 2021; 9:6023-6036. [PMID: 34323260 DOI: 10.1039/d1bm00879j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Platinum-based anticancer drugs can inhibit the growth of cancer cells by disrupting DNA replication, which makes them widely applicable in clinics for treating tumors and cancers. However, owing to the intrinsic or acquired drug resistance and severe side effects caused in the treatment, their successful clinical applications have been limited. Various strategies have been used to address these challenges. Nanocarriers have been used for platinum drug delivery because they can be effectively deposited in tumor tissues to reduce the damage to normal organs for an enhanced permeability and retention (EPR) effect. Furthermore, for synergizing the function of platinum-based drugs with different mechanisms to decrease the toxicities, multicomponent chemotherapy has become an imperative strategy in clinical cancer treatments. This review aims to introduce the mechanisms of action and limitations of platinum-based drugs in clinics, followed by providing the current advancement of nanocarriers including lipids, polymers, dendrimers, micelles and albumin for platinum drug delivery in cancer treatments. In addition, multicomponent chemotherapy based on platinum drugs is introduced in detail. Finally, the prospects of multicomponent chemotherapy for cancer treatment are discussed as well.
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Affiliation(s)
- Caihong Xian
- School of Biomedical Engineering, Sun Yat-sen University, Shenzhen 518057, China
| | - Haolin Chen
- School of Biomedical Engineering, Sun Yat-sen University, Shenzhen 518057, China
| | - Fei Xiong
- School of Biomedical Engineering, Sun Yat-sen University, Shenzhen 518057, China
| | - Yifen Fang
- The Affiliated TCM Hospital of Guangzhou Medical University, Guangzhou 510180, China
| | - Hai Huang
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | - Jun Wu
- School of Biomedical Engineering, Sun Yat-sen University, Shenzhen 518057, China
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18
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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: 15] [Impact Index Per Article: 5.0] [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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19
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Manna SL, Florio D, Iacobucci I, Napolitano F, Benedictis ID, Malfitano AM, Monti M, Ravera M, Gabano E, Marasco D. A Comparative Study of the Effects of Platinum (II) Complexes on β-Amyloid Aggregation: Potential Neurodrug Applications. Int J Mol Sci 2021; 22:ijms22063015. [PMID: 33809522 PMCID: PMC7998721 DOI: 10.3390/ijms22063015] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 03/09/2021] [Accepted: 03/10/2021] [Indexed: 01/21/2023] Open
Abstract
Herein the effects of three platinum complexes, namely (SP-4-2)-(2,2'-bipyridine)dichloridoplatinum(II), Pt-bpy, (SP-4-2)-dichlorido(1,10-phenanthroline) platinum(II), Pt-phen, and (SP-4-2)-chlorido(2,2':6',2''-terpyridine)platinum(II) chloride, Pt-terpy, on the aggregation of an amyloid model system derived from the C-terminal domain of Aβ peptide (Aβ21-40) were investigated. Thioflavin T (ThT) binding assays revealed the ability of Pt(II) compounds to repress amyloid aggregation in a dose-dependent way, whereas the ability of Aβ21-40 peptide to interfere with ligand field of metal complexes was analyzed through UV-Vis absorption spectroscopy and electrospray ionization mass spectrometry. Spectroscopic data provided micromolar EC50 values and allowed to assess that the observed inhibition of amyloid aggregation is due to the formation of adducts between Aβ21-40 peptide and complexes upon the release of labile ligands as chloride and that they can explore different modes of coordination toward Aβ21-40 with respect to the entire Aβ1-40 polypeptide. In addition, conformational studies through circular dichroism (CD) spectroscopy suggested that Pt-terpy induces soluble β-structures of monomeric Aβ21-40, thus limiting self-recognition. Noticeably, Pt-terpy demonstrated the ability to reduce the cytotoxicity of amyloid peptide in human SH-SY5Y neuroblastoma cells. Presented data corroborate the hypothesis to enlarge the application field of already known metal-based agents to neurodegenerative diseases, as potential neurodrugs.
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Affiliation(s)
- Sara La Manna
- Department of Pharmacy, University of Naples “Federico II”, 80131 Naples, Italy; (S.L.M.); (D.F.); (I.D.B.)
| | - Daniele Florio
- Department of Pharmacy, University of Naples “Federico II”, 80131 Naples, Italy; (S.L.M.); (D.F.); (I.D.B.)
| | - Ilaria Iacobucci
- Department of Chemical Sciences, CEINGE Biotecnologie Avanzate S.c.a r.l., “University of Naples Federico II”, 80131 Naples, Italy; (I.I.); (M.M.)
| | - Fabiana Napolitano
- Department of Translational Medical Science, University of Naples “Federico II”, 80131 Naples, Italy; (F.N.); (A.M.M.)
| | - Ilaria De Benedictis
- Department of Pharmacy, University of Naples “Federico II”, 80131 Naples, Italy; (S.L.M.); (D.F.); (I.D.B.)
| | - Anna Maria Malfitano
- Department of Translational Medical Science, University of Naples “Federico II”, 80131 Naples, Italy; (F.N.); (A.M.M.)
| | - Maria Monti
- Department of Chemical Sciences, CEINGE Biotecnologie Avanzate S.c.a r.l., “University of Naples Federico II”, 80131 Naples, Italy; (I.I.); (M.M.)
| | - Mauro Ravera
- Department of Sciences and Technological Innovation (DiSIT), University of Piemonte Orientale “A. Avogadro”, 15121 Alessandria, Italy; (M.R.); (E.G.)
| | - Elisabetta Gabano
- Department of Sciences and Technological Innovation (DiSIT), University of Piemonte Orientale “A. Avogadro”, 15121 Alessandria, Italy; (M.R.); (E.G.)
| | - Daniela Marasco
- Department of Pharmacy, University of Naples “Federico II”, 80131 Naples, Italy; (S.L.M.); (D.F.); (I.D.B.)
- Correspondence: ; Tel.: +39-081-2534512; Fax: +39-081-2534574
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20
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Kuang Y, Zhang J, Xiong M, Zeng W, Lin X, Yi X, Luo Y, Yang M, Li F, Huang Q. A Novel Nanosystem Realizing Curcumin Delivery Based on Fe 3O 4@Carbon Dots Nanocomposite for Alzheimer's Disease Therapy. Front Bioeng Biotechnol 2020; 8:614906. [PMID: 33344438 PMCID: PMC7744485 DOI: 10.3389/fbioe.2020.614906] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 10/27/2020] [Indexed: 01/08/2023] Open
Abstract
Alzheimer’s disease (AD) is the most common neurodegenerative disease, which seriously affects human health but lacks effective treatment methods. Amyloid β (Aβ) aggregates are considered a possible target for AD treatment. Evidence is increasingly showing that curcumin (CUR) can partly protect cells from Aβ-mediated neurotoxicity by inhibiting Aβ aggregation. However, the efficiency of targeted cellular uptake and bioavailability of CUR is very low due to its poor stability and water-solubility. In order to better improve the cell uptake efficiency and bioavailability of CUR and reduce the cytotoxicity of high-dose CUR, a novel CUR delivery system for AD therapy has been constructed based on the employment of the Fe3O4@carbon dots nanocomposite (Fe3O4@CDs) as the carrier. CUR-Fe3O4@CDs have a strong affinity toward Aβ and effectively inhibit extracellular Aβ fibrillation. In addition, CUR-Fe3O4@CDs can inhibit the production of reactive oxygen species (ROS) mediated by Aβ fibrils and the corresponding neurotoxicity in PC12 cells. More importantly, it can restore nerve damage and maintained neuronal morphology. These results indicate that the application of CUR-Fe3O4@CDs provides a promising platform for the treatment of AD.
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Affiliation(s)
- Ying Kuang
- Guangdong Provincial Key Laboratory of Brain Function and Disease, Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.,Oil-tea in Medical Health Care and Functional Product Development Engineering Research Center in Jiangxi, Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of Jiangxi Province, Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases, Ministry of Education, Gannan Medical University, Ganzhou, China
| | - Jingwen Zhang
- Oil-tea in Medical Health Care and Functional Product Development Engineering Research Center in Jiangxi, Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of Jiangxi Province, Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases, Ministry of Education, Gannan Medical University, Ganzhou, China
| | - Mogao Xiong
- Oil-tea in Medical Health Care and Functional Product Development Engineering Research Center in Jiangxi, Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of Jiangxi Province, Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases, Ministry of Education, Gannan Medical University, Ganzhou, China
| | - Weijia Zeng
- Oil-tea in Medical Health Care and Functional Product Development Engineering Research Center in Jiangxi, Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of Jiangxi Province, Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases, Ministry of Education, Gannan Medical University, Ganzhou, China
| | - Xiaofeng Lin
- Oil-tea in Medical Health Care and Functional Product Development Engineering Research Center in Jiangxi, Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of Jiangxi Province, Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases, Ministry of Education, Gannan Medical University, Ganzhou, China.,Department of Chemistry, Shantou University, Shantou, China
| | - Xiaoqing Yi
- Oil-tea in Medical Health Care and Functional Product Development Engineering Research Center in Jiangxi, Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of Jiangxi Province, Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases, Ministry of Education, Gannan Medical University, Ganzhou, China
| | - Yan Luo
- Oil-tea in Medical Health Care and Functional Product Development Engineering Research Center in Jiangxi, Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of Jiangxi Province, Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases, Ministry of Education, Gannan Medical University, Ganzhou, China
| | - Min Yang
- Oil-tea in Medical Health Care and Functional Product Development Engineering Research Center in Jiangxi, Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of Jiangxi Province, Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases, Ministry of Education, Gannan Medical University, Ganzhou, China
| | - Feng Li
- Guangdong Provincial Key Laboratory of Brain Function and Disease, Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Qitong Huang
- Oil-tea in Medical Health Care and Functional Product Development Engineering Research Center in Jiangxi, Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of Jiangxi Province, Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases, Ministry of Education, Gannan Medical University, Ganzhou, China
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21
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Metal complexes that bind to the amyloid-β peptide of relevance to Alzheimer’s disease. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213255
expr 886172045 + 931245952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
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22
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Gomes LM, Bataglioli JC, Storr T. Metal complexes that bind to the amyloid-β peptide of relevance to Alzheimer’s disease. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213255] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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23
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Hua J, Yuan X, Ma X, Ma P, Wang J, Niu J. A silver-substituted phosphomolybdate prevents the growth of bacteria without affecting the balance of reactive oxygen species. CrystEngComm 2020. [DOI: 10.1039/d0ce01283a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel 2D nanoscale silver-substituted Strandberg-type phosphomolybdate shows good inhibitory effect on the growth of Escherichia coli.
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Affiliation(s)
- Jiai Hua
- Henan Key Laboratory of Polyoxometalate Chemistry
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
- P. R. China
| | - Xin Yuan
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing
- P. R. China
| | - Xiang Ma
- Chemistry and Chemical Engineering Department
- Taiyuan Institute of Technology
- Taiyuan
- P. R. China
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
- P. R. China
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
- P. R. China
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
- P. R. China
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24
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Yang T, Zhu Z, Yin E, Wang Y, Zhang C, Yuan H, Zhang H, Jin S, Guo Z, Wang X. Alleviation of symptoms of Alzheimer's disease by diminishing Aβ neurotoxicity and neuroinflammation. Chem Sci 2019; 10:10149-10158. [PMID: 32055369 PMCID: PMC6979322 DOI: 10.1039/c9sc03042e] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 09/16/2019] [Indexed: 01/22/2023] Open
Abstract
Alzheimer's disease (AD) is one of the most prevailing neurodegenerative illnesses in the elderly. Accumulation of amyloid-β peptide (Aβ) and inflammation play critical roles in the pathogenesis and development of AD. Multi-target drugs may interdict the progress of AD through a synergistic mechanism. A neuromodulator, 2-((1H-benzo[d]imidazole-2-yl)methoxy)benzoic acid (BIBA), consisting of an Aβ-targeting group and a derivative of anti-inflammatory aspirin was designed as a potential anti-AD agent. BIBA exhibits a remarkable inhibitory effect on the self- and metal-induced Aβ aggregations and shows outstanding anti-inflammatory activity simultaneously. The neurotoxicity of Aβ aggregates is attenuated, and the production of pro-inflammatory cytokines (PICs), such as IL-6, IL-1β and TNF-α, in microglia stimulated by lipopolysaccharide (LPS) or Aβ is reduced. Owing to the synergy between the inhibition of Aβ oligomerization and downregulation of PICs, BIBA markedly prolongs the lifespan and relieves the Aβ-induced paralysis of Aβ-transgenic Caenorhabditis elegans, thus showing the potential to ameliorate the symptoms of AD through inhibiting Aβ neurotoxicity and deactivating microglia. These findings demonstrate that both Aβ aggregation and neuroinflammation are therapeutic targets for anti-AD drugs, and dual-functional agents that integrate anti-Aβ and anti-inflammatory capabilities have great advantages over the traditional single-target agents for AD treatment.
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Affiliation(s)
- Tao Yang
- State Key Laboratory of Pharmaceutical Biotechnology , School of Life Sciences , Nanjing University , Nanjing 210023 , P. R. China .
| | - Zhenzhu Zhu
- State Key Laboratory of Pharmaceutical Biotechnology , School of Life Sciences , Nanjing University , Nanjing 210023 , P. R. China .
| | - Enmao Yin
- State Key Laboratory of Pharmaceutical Biotechnology , School of Life Sciences , Nanjing University , Nanjing 210023 , P. R. China .
| | - Yanqing Wang
- School of Chemistry and Chemical Engineering , Yancheng Teachers University , Yancheng 224002 , P. R. China
| | - Changli Zhang
- Department of Chemistry , Nanjing Xiaozhuang College , Nanjing , 210017 , P. R. China
| | - Hao Yuan
- State Key Laboratory of Coordination Chemistry , School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , P. R. China
| | - Hongmei Zhang
- State Key Laboratory of Pharmaceutical Biotechnology , School of Life Sciences , Nanjing University , Nanjing 210023 , P. R. China .
| | - Suxing Jin
- State Key Laboratory of Pharmaceutical Biotechnology , School of Life Sciences , Nanjing University , Nanjing 210023 , P. R. China .
| | - Zijian Guo
- State Key Laboratory of Coordination Chemistry , School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , P. R. China
| | - Xiaoyong Wang
- State Key Laboratory of Pharmaceutical Biotechnology , School of Life Sciences , Nanjing University , Nanjing 210023 , P. R. China .
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25
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A β-sheet-targeted theranostic agent for diagnosing and preventing aggregation of pathogenic peptides in Alzheimer’s disease. Sci China Chem 2019. [DOI: 10.1007/s11426-019-9594-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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26
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Zhu X, Wen Y, Zhao Y, Liu Y, Sun J, Liu J, Liu J, Chen L. Functionalized chitosan-modified defect-related luminescent mesoporous silica nanoparticles as new inhibitors for hIAPP aggregation. NANOTECHNOLOGY 2019; 30:315705. [PMID: 30917341 DOI: 10.1088/1361-6528/ab13ef] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Human islet amyloid polypeptide (hIAPP or amylin) forms the amyloid deposits that is an important factor in the induction of type II diabetes. Accordingly, it is essential to efficiently and accurately inhibit the aggregation of hIAPP for the treatment and prevention of the disease. Here, defect mesoporous silica (DLMSN), with blue fluorescence, can perfectly achieve the accurate positioning in cells or organisms. DL@CS@NF cannot only specifically bind to a hIAPP monomer, but also effectively inhibit hIAPP aggregation, reduce cytotoxicity and overcome the instability and inefficiency of NF(N-Me)GA(N-Me)IL (NF). Furthermore, DL@CS@NF nanoparticles can significantly improve the survival rate of islet cells, stabilize the mitochondrial membrane potential, reduce the content of intracellular reactive oxygen species. In summary, DL@CS@NF nanoparticles may have broader implications in inhibiting the aggregation of hIAPP and reducing cytotoxicity.
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Affiliation(s)
- Xufeng Zhu
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, People's Republic of China
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27
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Kang J, Nam JS, Lee HJ, Nam G, Rhee HW, Kwon TH, Lim MH. Chemical strategies to modify amyloidogenic peptides using iridium(iii) complexes: coordination and photo-induced oxidation. Chem Sci 2019; 10:6855-6862. [PMID: 31391908 PMCID: PMC6657414 DOI: 10.1039/c9sc00931k] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Accepted: 06/03/2019] [Indexed: 12/20/2022] Open
Abstract
Effective chemical strategies, i.e., coordination and coordination-/photo-mediated oxidation, are rationally developed towards modification of amyloidogenic peptides and subsequent control of their aggregation and toxicity.
Amyloidogenic peptides are considered central pathological contributors towards neurodegeneration as observed in neurodegenerative disorders [e.g., amyloid-β (Aβ) peptides in Alzheimer's disease (AD)]; however, their roles in the pathologies of such diseases have not been fully elucidated since they are challenging targets to be studied due to their heterogeneous nature and intrinsically disordered structure. Chemical approaches to modify amyloidogenic peptides would be valuable in advancing our molecular-level understanding of their involvement in neurodegeneration. Herein, we report effective chemical strategies for modification of Aβ peptides (i.e., coordination and coordination-/photo-mediated oxidation) implemented by a single Ir(iii) complex in a photo-dependent manner. Such peptide variations can be achieved by our rationally designed Ir(iii) complexes (Ir-Me, Ir-H, Ir-F, and Ir-F2) leading to significantly modulating the aggregation pathways of two main Aβ isoforms, Aβ40 and Aβ42, as well as the production of toxic Aβ species. Overall, we demonstrate chemical tactics for modification of amyloidogenic peptides in an effective and manageable manner utilizing the coordination capacities and photophysical properties of transition metal complexes.
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Affiliation(s)
- Juhye Kang
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea . .,Department of Chemistry , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Republic of Korea .
| | - Jung Seung Nam
- Department of Chemistry , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Republic of Korea .
| | - Hyuck Jin Lee
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea . .,Department of Chemistry Education , Kongju National University , Gongju 32588 , Republic of Korea
| | - Geewoo Nam
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea . .,Department of Chemistry , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Republic of Korea .
| | - Hyun-Woo Rhee
- Department of Chemistry , Seoul National University , Seoul 08826 , Republic of Korea
| | - Tae-Hyuk Kwon
- Department of Chemistry , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , 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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28
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Florio D, Malfitano AM, Di Somma S, Mügge C, Weigand W, Ferraro G, Iacobucci I, Monti M, Morelli G, Merlino A, Marasco D. Platinum(II) O, S Complexes Inhibit the Aggregation of Amyloid Model Systems. Int J Mol Sci 2019; 20:ijms20040829. [PMID: 30769904 PMCID: PMC6413125 DOI: 10.3390/ijms20040829] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 02/08/2019] [Accepted: 02/13/2019] [Indexed: 02/07/2023] Open
Abstract
Platinum(II) complexes with different cinnamic acid derivatives as ligands were investigated for their ability to inhibit the aggregation process of amyloid systems derived from Aβ, Yeast Prion Protein Sup35p and the C-terminal domain of nucleophosmin 1. Thioflavin T binding assays and circular dichroism data indicate that these compounds strongly inhibit the aggregation of investigated peptides exhibiting IC50 values in the micromolar range. MS analysis confirms the formation of adducts between peptides and Pt(II) complexes that are also able to reduce amyloid cytotoxicity in human SH-SY5Y neuroblastoma cells. Overall data suggests that bidentate ligands based on β-hydroxy dithiocinnamic esters can be used to develop platinum or platinoid compounds with anti-amyloid aggregation properties.
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Affiliation(s)
- Daniele Florio
- Department of Pharmacy, University of Naples Federico II, Napoli 80134, Italy.
| | - Anna Maria Malfitano
- Department of Translational Medical Science, University of Naples Federico II, Napoli 80131, Italy.
| | - Sarah Di Somma
- Department of Translational Medical Science, University of Naples Federico II, Napoli 80131, Italy.
| | - Carolin Mügge
- Institute for Inorganic and Analytical Chemistry, University of Jena, Jena 07743, Germany.
- Department of Biology, Ruhr-University Bochum, Bochum 44801, Germany.
| | - Wolfgang Weigand
- Institute for Inorganic and Analytical Chemistry, University of Jena, Jena 07743, Germany.
| | - Giarita Ferraro
- Department of Chemical Sciences, University of Naples Federico II, Napoli 80126, Italy.
| | - Ilaria Iacobucci
- Department of Chemical Sciences, University of Naples Federico II, Napoli 80126, Italy.
- CEINGE Biotecnologie Avanzate s.c.a r.l., University of Naples Federico II, Napoli 80145, Italy.
| | - Maria Monti
- Department of Chemical Sciences, University of Naples Federico II, Napoli 80126, Italy.
- CEINGE Biotecnologie Avanzate s.c.a r.l., University of Naples Federico II, Napoli 80145, Italy.
| | - Giancarlo Morelli
- Department of Pharmacy, University of Naples Federico II, Napoli 80134, Italy.
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Napoli 80126, Italy.
| | - Daniela Marasco
- Department of Pharmacy, University of Naples Federico II, Napoli 80134, Italy.
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29
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Stoichiometry of Heavy Metal Binding to Peptides Involved in Alzheimer’s Disease: Mass Spectrometric Evidence. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1140:401-415. [DOI: 10.1007/978-3-030-15950-4_23] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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30
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Ma X, Zhang C, Hua J, Ma P, Wang J, Niu J. A binuclear copper-substituted phosphomolybdate with reactive oxygen species catalytic ability and antimicrobial activity. CrystEngComm 2019. [DOI: 10.1039/c8ce01513a] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A magnetic binuclear Cu-substituted Strandberg POM can produce ROS and inhibit the growth of E. coli.
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Affiliation(s)
- Xiang Ma
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Chao Zhang
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Jiai Hua
- Chemistry and Chemical Engineering Department
- Taiyuan Institute of Technology
- Taiyuan
- P. R. China
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
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31
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Wang J, Wang K, Zhu Z, He Y, Zhang C, Guo Z, Wang X. Inhibition of metal-induced amyloid β-peptide aggregation by a blood–brain barrier permeable silica–cyclen nanochelator. RSC Adv 2019; 9:14126-14131. [PMID: 35519314 PMCID: PMC9064035 DOI: 10.1039/c9ra02358e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 04/26/2019] [Indexed: 11/23/2022] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative malady associated with amyloid β-peptide (Aβ) aggregation in the brain. Metal ions play important roles in Aβ aggregation and neurotoxicity. Metal chelators are potential therapeutic agents for AD because they could sequester metal ions from the Aβ aggregates and reverse the aggregation. The blood–brain barrier (BBB) is a major obstacle for drug delivery to AD patients. Herein, a nanoscale silica–cyclen composite combining cyclen as the metal chelator and silica nanoparticles as a carrier was reported. Silica–cyclen was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) and dynamic light scattering (DLS). The inhibitory effect of the silica–cyclen nanochelator on Zn2+- or Cu2+-induced Aβ aggregation was investigated by using a BCA protein assay and TEM. Similar to cyclen, silica–cyclen can effectively inhibit the Aβ aggregation and reduce the generation of reactive oxygen species induced by the Cu–Aβ40 complex, thereby lessening the metal-induced Aβ toxicity against PC12 cells. In vivo studies indicate that the silica–cyclen nanochelator can cross the BBB, which may provide inspiration for the construction of novel Aβ inhibitors. A BBB-passable nanoscale silica–cyclen chelator effectively reduces the metal-induced Aβ aggregates and related ROS, thereby decreasing the neurotoxicity of Aβ.![]()
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Affiliation(s)
- Jinzhuan Wang
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
- P. R. China
| | - Kun Wang
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
- P. R. China
| | - Zhenzhu Zhu
- State Key Laboratory of Pharmaceutical Biotechnology
- School of Life Sciences
- Nanjing University
- Nanjing
- P. R. China
| | - Yafeng He
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
- P. R. China
| | - Changli Zhang
- School of Biochemical and Environmental Engineering
- Nanjing Xiaozhuang University
- Nanjing
- P. R. China
| | - Zijian Guo
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
- P. R. China
| | - Xiaoyong Wang
- State Key Laboratory of Pharmaceutical Biotechnology
- School of Life Sciences
- Nanjing University
- Nanjing
- P. R. China
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32
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Suh JM, Kim G, Kang J, Lim MH. Strategies Employing Transition Metal Complexes To Modulate Amyloid-β Aggregation. Inorg Chem 2018; 58:8-17. [PMID: 30556393 DOI: 10.1021/acs.inorgchem.8b02813] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Aggregation of amyloid-β (Aβ) peptides is implicated in the development of Alzheimer's disease (AD), the most common type of dementia. Thus, numerous efforts to identify chemical tactics to control the aggregation pathways of Aβ peptides have been made. Among them, transition metal complexes as a class of chemical modulators against Aβ aggregation have been designed and utilized. Transition metal complexes are able to carry out a variety of chemistry with Aβ peptides (e.g., coordination chemistry and oxidative and proteolytic reactions for peptide modifications) based on their tunable characteristics, including the oxidation state of and coordination geometry around the metal center. This Viewpoint illustrates three strategies employing transition metal complexes toward modulation of Aβ aggregation pathways (i.e., oxidation and hydrolysis of Aβ as well as coordination to Aβ), along with some examples of such transition metal complexes. In addition, proposed mechanisms for three reactivities of transition metal complexes with Aβ peptides are discussed. Our greater understanding of how transition metal complexes have been engineered and used for alteration of Aβ aggregation could provide insight into the new discovery of chemical reagents against Aβ peptides found in AD.
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Affiliation(s)
- Jong-Min Suh
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| | - Gunhee Kim
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| | - Juhye Kang
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea.,Department of Chemistry , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , 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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33
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Yang L, Wang W, Chen J, Wang N, Zheng G. A comparative study of resveratrol and resveratrol-functional selenium nanoparticles: Inhibiting amyloid β aggregation and reactive oxygen species formation properties. J Biomed Mater Res A 2018; 106:3034-3041. [PMID: 30295993 DOI: 10.1002/jbm.a.36493] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 06/12/2018] [Accepted: 06/14/2018] [Indexed: 02/05/2023]
Abstract
Deposition of amyloid-β (Aβ) aggregates and formation of neurotoxic reactive oxygen species (ROS) are significant pathological signatures of Alzheimer's disease (AD). Resveratrol (Res) is an antioxidant with the potential to treat AD. However, the bioavailability and solubility of Res is very low and it cannot entirely inhibit Cu2+ -induced Aβ42 aggregation at low concentration. Herein, we combine the unique Aβ absorption property of selenium nanoparticles with the natural antioxidant agent Res to form Res@SeNPs. Our in vitro biological evaluation revealed that modification of Res with SeNPs provides a synergistic effect on Cu2+ -induced Aβ42 aggregation, ROS generation and, more importantly, protects PC12 cells from Aβ42-Cu2+ complexes-induced cell death. It is believed that SeNPs can improve the application of Res in AD treatment as Res@SeNPs is more efficient than Res in reducing Aβ42 toxicity in long-term use. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 3034-3041, 2018.
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Affiliation(s)
- Licong Yang
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Wenjun Wang
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Jiguang Chen
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Na Wang
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Guodong Zheng
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, 330045, China
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34
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Ma X, Hua J, Wang K, Zhang H, Zhang C, He Y, Guo Z, Wang X. Modulating Conformation of Aβ-Peptide: An Effective Way to Prevent Protein-Misfolding Disease. Inorg Chem 2018; 57:13533-13543. [PMID: 30345755 DOI: 10.1021/acs.inorgchem.8b02115] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Alzheimer's disease (AD) is a typical protein-misfolding disease. Aggregation of amyloid β-peptide (Aβ) plays a key role in the etiology of AD. The misfolding of Aβ results in the formation of β-sheet-rich aggregates and damages the function of neurons. A modified polyoxometalate (POM), [CoL(H2O)]2[CoL]2[HAsVMoV6MoVI6O40] [CAM, L = 2-(1 H-pyrazol-3-yl)pyridine], was designed to disaggregate the Aβ aggregates, where L acts as an Aβ-targeting group and POM as a conformational modulator. X-ray crystallography shows that CAM is composed of a ε-Keggin unit and four coordination units. CAM can disaggregate the β-sheet-rich fibrils and metal-induced or self-aggregated Aβ aggregates, and it further inhibits the production of ROS; as a result, it can protect the neurons from synaptic toxicity induced by Zn2+- or Cu2+-Aβ aggregates or Aβ self-aggregation. The mechanism of disaggregation involves a transformation of Aβ conformation from β-sheet to other conformers. The nature of the process is an interference of the β-sheet conformation by CAM via hydrogen bonding. CAM specifically interacts with Aβ aggregates but does not disturb the cerebral metal homeostasis and enzymatic systems. Molecular simulation suggests that the appropriate size of CAM and the cavity of β-sheets facilitate the interaction between CAM and Aβ aggregates; additionally, the H-bonding-favored amino acid residues in the cavity provide a precondition for the interaction. Moreover, CAM is lipophilic and capable of penetrating the blood-brain barrier, and it is metabolizable without causing an untoward effect to mice at high dosages. In view of the significant inhibitory effect on the Aβ aggregation and related neurotoxicity, CAM represents a new type of leading compounds with a distinctive mechanism of action for the treatment of Alzheimer' disease. The conception of this study may be applied to other protein-misfolding diseases caused by conformational changes.
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Affiliation(s)
- Xiang Ma
- State Key Laboratory of Coordination Chemistry , School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , P. R. China.,Chemistry and Chemical Engineering Department , Taiyuan Institute of Technology , Taiyuan 030008 , P. R. China
| | - Jiai Hua
- Chemistry and Chemical Engineering Department , Taiyuan Institute of Technology , Taiyuan 030008 , P. R. China
| | - Kun Wang
- State Key Laboratory of Coordination Chemistry , School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , P. R. China
| | - Hongmei Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences , Nanjing University , Nanjing 210023 , P. R. China
| | - Changli Zhang
- School of Biochemical and Environmental Engineering , Nanjing Xiaozhuang University , Nanjing 210017 , P. R. China
| | - Yafeng He
- State Key Laboratory of Coordination Chemistry , School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , P. R. China
| | - Zijian Guo
- State Key Laboratory of Coordination Chemistry , School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , P. R. China
| | - Xiaoyong Wang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences , Nanjing University , Nanjing 210023 , P. R. China
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35
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Ma M, Gao N, Sun Y, Du X, Ren J, Qu X. Redox-Activated Near-Infrared-Responsive Polyoxometalates Used for Photothermal Treatment of Alzheimer's Disease. Adv Healthc Mater 2018; 7:e1800320. [PMID: 29920995 DOI: 10.1002/adhm.201800320] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 04/20/2018] [Indexed: 12/30/2022]
Abstract
Adjustable structure, excellent physiochemical properties, and good biocompatibility render polyoxometalates (POMs) as a suitable drug agent for the treatment of Alzheimer's disease (AD). However, previous works using POMs against AD just focus on the inhibition of amyloid-β (Aβ) monomer aggregation. In consideration that both Aβ fibrils and reactive oxygen species (ROS) are closely associated with clinical development of AD symptoms, it would be more effective if POMs can disaggregate Aβ fibrils and eliminate ROS as well. Herein, a redox-activated near-infrared (NIR) responsive POMs-based nanoplaform (rPOMs@MSNs@copolymer) is developed with high photothermal effect and antioxidant activity. The rPOMs@MSNs@copolymer can generate local hyperthermia to disaggregate Aβ fibrils under NIR laser irradiation because of POMs (rPOMs) with strong NIR absorption. Furthermore, Aβ-induced ROS can be scavenged by the antioxidant activity of rPOMs. To the authors' knowledge, there is no report of using rPOMs for NIR photothermal treatment of AD. This work may promote the development of multifunctional inorganic agents for biomedical applications.
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Affiliation(s)
- Mengmeng Ma
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun Jilin 130022 China
- University of Science and Technology of China; Hefei Anhui 230026 China
| | - Nan Gao
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun Jilin 130022 China
| | - Yuhuan Sun
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun Jilin 130022 China
- University of Science and Technology of China; Hefei Anhui 230026 China
| | - Xiubo Du
- College of Life Sciences and Oceanography; Shenzhen Key Laboratory of Microbial Genetic Engineering; Shenzhen University; Shenzhen 518060 China
| | - Jinsong Ren
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun Jilin 130022 China
| | - Xiaogang Qu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun Jilin 130022 China
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36
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Yang L, Wang N, Zheng G. Enhanced Effect of Combining Chlorogenic Acid on Selenium Nanoparticles in Inhibiting Amyloid β Aggregation and Reactive Oxygen Species Formation In Vitro. NANOSCALE RESEARCH LETTERS 2018; 13:303. [PMID: 30269259 PMCID: PMC6163123 DOI: 10.1186/s11671-018-2720-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 09/14/2018] [Indexed: 05/25/2023]
Abstract
The deposition of amyloid-β (Aβ) plaques and formation of neurotoxic reactive oxygen species (ROS) is a significant pathological signature of Alzheimer's disease (AD). Herein, a novel strategy is reported for combining the unique Aβ absorption property of selenium nanoparticles with the natural antioxidant agent chlorogenic acid (CGA) to form CGA@SeNPs. The in vitro biological evaluation revealed that CGA could clear the ROS induced by Aβ40 aggregates, but it did not inhibit the Aβ40 aggregation and cell membrane damage which were also caused by Aβ40 aggregates. Interestingly, CGA@SeNPs show an enhanced inhibition effect on Aβ40 aggregation and, more importantly, protect PC12 cells from Aβ aggregation-induced cell death. It is believed that CGA@SeNPs are more efficient than CGA in reducing Aβ40 toxic in long-term use.
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Affiliation(s)
- Licong Yang
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, 330045 China
| | - Na Wang
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, 330045 China
| | - Guodong Zheng
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, 330045 China
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37
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Vyas NA, Singh SB, Kumbhar AS, Ranade DS, Walke GR, Kulkarni PP, Jani V, Sonavane UB, Joshi RR, Rapole S. Acetylcholinesterase and Aβ Aggregation Inhibition by Heterometallic Ruthenium(II)-Platinum(II) Polypyridyl Complexes. Inorg Chem 2018; 57:7524-7535. [PMID: 29893118 DOI: 10.1021/acs.inorgchem.8b00091] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Two heteronuclear ruthenium(II)-platinum(II) complexes [Ru(bpy)2(BPIMBp)PtCl2]2+ (3) and [Ru(phen)2(BPIMBp)PtCl2]2+ (4), where bpy = 2,2'-bipyridine, phen = 1,10-phenanthroline, and BPIMBp = 1,4'-bis[(2-pyridin-2-yl)-1H-imidazol-1-ylmethyl]-1,1'-biphenyl, have been designed and synthesized from their mononuclear precursors [Ru(bpy)2(BPIMBp)]2+ (1) and [Ru(phen)2(BPIMBp)]2+ (2) as multitarget molecules for Alzheimer's disease (AD). The inclusion of the cis-PtCl2 moiety facilitates the covalent interaction of Ru(II) polypyridyl complexes with amyloid β (Aβ) peptide. These multifunctional complexes act as inhibitors of acetylcholinesterase (AChE), Aβ aggregation, and Cu-induced oxidative stress and protect neuronal cells against Aβ-toxicity. The study highlights the design of metal based anti-Alzheimer's disease (AD) systems.
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Affiliation(s)
- Nilima A Vyas
- Department of Chemistry , Savitribai Phule Pune University , Pune - 411007 , India
| | - Sushma B Singh
- Department of Chemistry , Savitribai Phule Pune University , Pune - 411007 , India
| | - Avinash S Kumbhar
- Department of Chemistry , Savitribai Phule Pune University , Pune - 411007 , India
| | - Dnyanesh S Ranade
- Bioprospecting Group, Agharkar Research Institute , Savitribai Phule Pune University , Pune - 411004 , India
| | - Gulshan R Walke
- Bioprospecting Group, Agharkar Research Institute , Savitribai Phule Pune University , Pune - 411004 , India
| | - Prasad P Kulkarni
- Bioprospecting Group, Agharkar Research Institute , Savitribai Phule Pune University , Pune - 411004 , India
| | - Vinod Jani
- Centre for Development of Advanced Computing (C-DAC) , Savitribai Phule Pune University , Pune - 411007 , India
| | - Uddhavesh B Sonavane
- Centre for Development of Advanced Computing (C-DAC) , Savitribai Phule Pune University , Pune - 411007 , India
| | - Rajendra R Joshi
- Centre for Development of Advanced Computing (C-DAC) , Savitribai Phule Pune University , Pune - 411007 , India
| | - Srikanth Rapole
- Proteomics Laboratory, National Centre for Cell Sciences , Savitribai Phule Pune University , Pune - 411007 , India
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38
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Wang X, Wang X, Guo Z. Metal-involved theranostics: An emerging strategy for fighting Alzheimer’s disease. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.03.010] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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39
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NBD-BPEA regulates Zn 2+- or Cu 2+-induced Aβ 40 aggregation and cytotoxicity. Food Chem Toxicol 2018; 119:260-267. [PMID: 29596976 DOI: 10.1016/j.fct.2018.03.035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 03/21/2018] [Accepted: 03/24/2018] [Indexed: 11/21/2022]
Abstract
Abnormal interaction of amyloid-β peptide (Aβ) and metal ions is proved to be related to the etiology of Alzheimer's disease (AD). Using metal chelators to reverse metal-triggered Aβ aggregation has become one of the potential therapies for AD. In our work, the effect of metal chelator, NBD-BPEA, on Zn2+- or Cu2+-mediated Aβ40 aggregation and neurotoxicity has been systematically studied. NBD-BPEA exhibits the capability to inhibit the metal-mediated Aβ40 aggregation and disassemble performed Aβ40 aggregates. It also prevents the formation of the β-sheet structure and promotes the reversion of the β-sheet to the normal random coil conformation. Moreover, it can alleviate Zn2+- or Cu2+-Aβ40-induced neurotoxicity, suppress the intracellular ROS and protect against cell apoptosis. These preliminary findings indicate that NBD-BPEA has promising perspective of application in the treatment of AD, and therefore deserve further investigation as potential anti-AD agents.
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40
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Ligand field molecular dynamics simulation of Pt(II)-phenanthroline binding to N-terminal fragment of amyloid-β peptide. PLoS One 2018; 13:e0193668. [PMID: 29509784 PMCID: PMC5839559 DOI: 10.1371/journal.pone.0193668] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 02/15/2018] [Indexed: 12/15/2022] Open
Abstract
We report microsecond timescale molecular dynamics simulation of the complex formed between Pt(II)-phenanthroline and the 16 N-terminal residues of the Aβ peptide that is implicated in the onset of Alzheimer’s disease, along with equivalent simulations of the metal-free peptide. Simulations from a variety of starting points reach equilibrium within 100 ns, as judged by root mean square deviation and radius of gyration. Platinum-bound peptides deviate rather more from starting points, and adopt structures with larger radius of gyration, than their metal-free counterparts. Residues bound directly to Pt show smaller fluctuation, but others actually move more in the Pt-bound peptide. Hydrogen bonding within the peptide is disrupted by binding of Pt, whereas the presence of salt-bridges are enhanced.
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41
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Amyloid β-targeted metal complexes for potential applications in Alzheimer's disease. Future Med Chem 2018; 10:679-701. [DOI: 10.4155/fmc-2017-0248] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Alzheimer's disease (AD) is currently an incurable neurodegenerative disorder that affects millions of people around the world. The aggregation of amyloid-β peptides (Aβ), one of the primary pathological hallmarks of AD, plays a key role in the AD pathogenesis. In this regard, Aβ aggregates have been considered as both biomarkers and drug targets for the diagnosis and therapy of AD. Various Aβ-targeted metal complexes have exhibited promising potential as anti-AD agents due to their fascinating physicochemical properties over the past two decades. This review classifies the complexes into three groups based on their potential applications in AD including therapy, diagnosis and theranosis. The recent representative examples are highlighted in terms of design rationale, working mechanism and potential applications.
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Selective recognition of Cr3+ in multivitamin formulations in aqueous medium by fluorescent organic–inorganic nanohybrids. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3300-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Guo J, Sun W, Liu F. Brazilin inhibits the Zn 2+-mediated aggregation of amyloid β-protein and alleviates cytotoxicity. J Inorg Biochem 2017; 177:183-189. [PMID: 28972932 DOI: 10.1016/j.jinorgbio.2017.09.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 09/04/2017] [Accepted: 09/17/2017] [Indexed: 12/18/2022]
Abstract
Interactions of Zn2+ with amyloid β-protein (Aβ) and the subsequent induction of Aβ aggregation have been implicated in the pathogenesis of Alzheimer's disease (AD). The development of small-compound inhibitors against Zn2+-mediated Aβ aggregation is therefore greatly desired. In this study, brazilin was used to inhibit Zn2+-mediated Aβ aggregation and alleviate its cytotoxicity. The binding properties of brazilin and Zn2+ were first probed using Fourier transform infrared (FTIR) spectroscopy and isothermal titration calorimetry (ITC) assays. Both the FTIR and ITC results have shown that brazilin is able to bind Zn2+ in a physiologically suitable range of concentrations. The dissociation constant (Kd) between brazilin and Zn2+ was about 46.0±6.8μM, which makes brazilin a potential drug model for the chelation of free Zn2+. Moreover, the higher affinity of brazilin for Aβ42 (Kd=2.5±1.6μM) than that of Zn2+ (Kd=6.2±0. 9μM), enables brazilin to sequester Zn2+ from the Aβ42-Zn2+ complex. In addition, the inhibitory effects of brazilin on Zn2+-mediated Aβ aggregation were examined using the Thioflavin T fluorescence assay, transmission electron microscopy and cytotoxicity assays. It was found that brazilin showed remarkable inhibitory capability against Zn2+-induced aggregation of Aβ42. Furthermore, the Zn2+-mediated cytotoxicity of Aβ42 was also largely mitigated under the influence of brazilin. This study therefore provides further insights into the role of Zn2+ in the Aβ42 aggregation pathway, indicating potential new strategies for the design of small compounds with therapeutic potential for AD.
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Affiliation(s)
- Jingjing Guo
- Department of Biochemical Engineering, Key Laboratory of Systems Bioengineering of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Wanqi Sun
- Department of Chemical and Biological Engineering, University of Alabama, Tuscaloosa, AL, USA
| | - Fufeng Liu
- Department of Biochemical Engineering, Key Laboratory of Systems Bioengineering of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China; Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, National Engineering Laboratory for Industrial Enzymes, National and Local United Engineering Lab of Metabolic Control Fermentation Technology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, PR China.
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44
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Banik D, Kundu S, Banerjee P, Dutta R, Sarkar N. Investigation of Fibril Forming Mechanisms of l-Phenylalanine and l-Tyrosine: Microscopic Insight toward Phenylketonuria and Tyrosinemia Type II. J Phys Chem B 2017; 121:1533-1543. [DOI: 10.1021/acs.jpcb.6b12220] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Debasis Banik
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Sangita Kundu
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Pavel Banerjee
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Rupam Dutta
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Nilmoni Sarkar
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
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45
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Yang L, Sun J, Xie W, Liu Y, Liu J. Dual-functional selenium nanoparticles bind to and inhibit amyloid β fiber formation in Alzheimer's disease. J Mater Chem B 2017; 5:5954-5967. [DOI: 10.1039/c6tb02952c] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
LPFFD/TGN modified SeNPs could cross the BBB and selectively bind to Aβ species. This binding might disrupted Aβ40nucleation, and finally decrease Aβ40fibrillation and their corresponding neurotoxicity in PC12 cells.
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Affiliation(s)
- Licong Yang
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- P. R. China
| | - Jing Sun
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- P. R. China
| | - Wenjie Xie
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- P. R. China
| | - Yanan Liu
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- P. R. China
| | - Jie Liu
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- P. R. China
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46
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Yang L, Yin T, Liu Y, Sun J, Zhou Y, Liu J. Gold nanoparticle-capped mesoporous silica-based H 2O 2-responsive controlled release system for Alzheimer's disease treatment. Acta Biomater 2016; 46:177-190. [PMID: 27619837 DOI: 10.1016/j.actbio.2016.09.010] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2016] [Revised: 09/05/2016] [Accepted: 09/08/2016] [Indexed: 12/17/2022]
Abstract
Metal ions promote Alzheimer's disease (AD) pathogenesis by accelerating amyloid-β (Aβ) aggregation and inducing formation of neurotoxic reactive oxygen species (ROS) such as hydrogen peroxide (H2O2). Although metal chelators can block these effects, their therapeutic potential is marred by their inability to cross the blood-brain barrier (BBB) and by their non-specific interactions with metal ions necessary for normal cellular processes, which could result in adverse side effects. To overcome these limitations, we created a novel gold nanoparticle-capped mesoporous silica (MSN-AuNPs) based H2O2-responsive controlled release system for targeted delivery of the metal chelator CQ. In this system, CQ is released only upon exposure to conditions in which H2O2 levels are high, such as those in Aβ plaques. The conjugation of AuNPs on the surface of MSN did not affect their ability to cross the BBB. The AuNPs also help in decrease the Aβ self-assembly, due to this, MSN-CQ-AuNPs were more efficient than MSN-CQ in inhibiting Cu2+-induced Aβ40 aggregation. Furthermore, MSN-CQ-AuNPs reduced the cell membrane disruption, microtubular defects and ROS-mediated apoptosis induced by Aβ40-Cu2+ complexes. The high BBB permeability, efficient anti-Aβ aggregation, and good biocompatibility of MSN-CQ-AuNPs, together with the specific conditions necessary for its release of CQ, demonstrate its potential for future biomedical applications. STATEMENT OF SIGNIFICANCE Due to the low ability to cross the blood-brain barrier (BBB) and non-specific interactions with metal ions necessary for normal cellular processes of metal chelator or Aβ inhibitors, we created a novel gold nanoparticle-capped mesoporous silica (MSN-AuNPs)-based H2O2-responsive controlled release system for targeted delivery of the metal chelator CQ and AuNPs (Aβ inhibitor). In this system, CQ and AuNPs are released only upon exposure to conditions in which H2O2 levels are high, such as those in Aβ plaques. The AuNPs on the surface of MSN also help in decrease the Aβ self-assembly, due to this, MSN-CQ-AuNPs were more efficient than MSN-CQ in inhibiting Cu2+-induced Aβ40 aggregation. Furthermore, MSN-CQ-AuNPs reduced the cell membrane disruption, microtubular defects and ROS-mediated apoptosis induced by Aβ40-Cu2+ complexes. Our data suggest that this controlled release system may have widespread application in the field of medicine for Alzheimer's disease.
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Yin T, Xie W, Sun J, Yang L, Liu J. Penetratin Peptide-Functionalized Gold Nanostars: Enhanced BBB Permeability and NIR Photothermal Treatment of Alzheimer's Disease Using Ultralow Irradiance. ACS APPLIED MATERIALS & INTERFACES 2016; 8:19291-302. [PMID: 27411476 DOI: 10.1021/acsami.6b05089] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The structural changes of amyloid-beta (Aβ) from nontoxic monomers into neurotoxic aggregates are implicated with pathogenesis of Alzheimer's disease (AD). Over the past decades, weak disaggregation ability and low permeability to the blood-brain barrier (BBB) may be the main obstacles for major Aβ aggregation blockers. Here, we synthesized penetratin (Pen) peptide loaded poly(ethylene glycol) (PEG)-stabilized gold nanostars (AuNS) modified with ruthenium complex (Ru@Pen@PEG-AuNS), and Ru(II) complex as luminescent probes for tracking drug delivery. We revealed that Ru@Pen@PEG-AuNS could obviously inhibit the formation of Aβ fibrils as well as dissociate preformed fibrous Aβ under the irradiation of near-infrared (NIR) due to the NIR absorption characteristic of AuNS. More importantly, this novel design could be applied in medicine as an appropriate nanovehicle, being highly biocompatible and hemocompatible. In addition, Ru@Pen@PEG-AuNS had excellent neuroprotective effect on the Aβ-induced cellular toxicity by applying NIR irradiation. Meanwhile, Pen peptide could effectively improve the delivery of nanoparticles to the brain in vitro and in vivo, which overcame the major limitation of Aβ aggregation blockers. These consequences illustrated that the enhanced BBB permeability and efficient photothermolysis of Ru@Pen@PEG-AuNS are promising agents in AD therapy.
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Affiliation(s)
- Tiantian Yin
- Department of Chemistry, Jinan University , Guangzhou 510632, China
| | - Wenjie Xie
- Department of Chemistry, Jinan University , Guangzhou 510632, China
| | - Jing Sun
- Department of Chemistry, Jinan University , Guangzhou 510632, China
| | - Licong Yang
- Department of Chemistry, Jinan University , Guangzhou 510632, China
| | - Jie Liu
- Department of Chemistry, Jinan University , Guangzhou 510632, China
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48
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Vyas NA, Ramteke SN, Kumbhar AS, Kulkarni PP, Jani V, Sonawane UB, Joshi RR, Joshi B, Erxleben A. Ruthenium(II) polypyridyl complexes with hydrophobic ancillary ligand as Aβ aggregation inhibitors. Eur J Med Chem 2016; 121:793-802. [PMID: 27406812 DOI: 10.1016/j.ejmech.2016.06.038] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Revised: 06/15/2016] [Accepted: 06/20/2016] [Indexed: 11/28/2022]
Abstract
The synthesis, spectral and electrochemical characterization of the complexes of the type [Ru(NN)2(txbg)](2+) where NN is 2,2'-bipyridine (bpy) (1), 1,10-phenanthroline (phen) (2), dipyrido [3,2-d:2',3f] quinoxaline (dpq) (3), and dipyrido[3,2-a:2',3'-c]phenazine (dppz) (4) which incorporate the tetra-xylene bipyridine glycoluril (txbg) as the ancillary ligand are described in detail. Crystal structures of ligand txbg and complex 2 were solved by single crystal X-ray diffraction. Thioflavin T (ThT) fluorescence and Transmission Electron Microscopy (TEM) results indicated that at micromolar concentration all complexes exhibit significant potential of Aβ aggregation inhibition, while the ligand txbg displayed weak activity towards Aβ aggregation. Complex 1 showed relatively low inhibition (70%) while complexes 2-4 inhibited nearly 100% Aβ aggregation after 240 h of incubation. The similar potential of complexes 2-4 and absence of any trend in their activity with the planarity of polypyridyl ligands suggests there is no marked effect of planarity of coligands on their inhibitory potential. Further studies on acetylcholinesterase (AChE) inhibition indicated very weak activity of these complexes against AChE. Detailed interactions of Aβ with both ligand and complex 2 have been studied by molecular modeling. Complex 2 showed interactions involving all three polypyridyl ligands with hydrophobic region of Aβ. Furthermore, the toxicity of these complexes towards human neuroblastoma cells was evaluated by MTT assay and except complex 4, the complexes displayed very low toxicity.
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Affiliation(s)
- Nilima A Vyas
- Department of Chemistry, Savitribai Phule Pune University, Pune, 411007, India
| | | | - Avinash S Kumbhar
- Department of Chemistry, Savitribai Phule Pune University, Pune, 411007, India.
| | | | - Vinod Jani
- Bioinformatics Group, Centre for Development of Advanced Computing (C-DAC), Savitribai Phule Pune University, Pune, 411007, India
| | - Uddhavesh B Sonawane
- Bioinformatics Group, Centre for Development of Advanced Computing (C-DAC), Savitribai Phule Pune University, Pune, 411007, India
| | - Rajendra R Joshi
- Bioinformatics Group, Centre for Development of Advanced Computing (C-DAC), Savitribai Phule Pune University, Pune, 411007, India
| | - Bimba Joshi
- Bioprospecting, Agharkar Research Institute, Pune, 411004, India
| | - Andrea Erxleben
- School of Chemistry, National University of Ireland, Galway, Ireland
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49
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Su T, Zhang T, Xie S, Yan J, Wu Y, Li X, Huang L, Luo HB. Discovery of novel PDE9 inhibitors capable of inhibiting Aβ aggregation as potential candidates for the treatment of Alzheimer's disease. Sci Rep 2016; 6:21826. [PMID: 26911795 PMCID: PMC4766439 DOI: 10.1038/srep21826] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 02/01/2016] [Indexed: 12/20/2022] Open
Abstract
Recently, phosphodiesterase-9 (PDE9) inhibitors and biometal-chelators have received much attention as potential therapeutics for the treatment of Alzheimer’s disease (AD). Here, we designed, synthesized, and evaluated a novel series of PDE9 inhibitors with the ability to chelate metal ions. The bioassay results showed that most of these molecules strongly inhibited PDE9 activity. Compound 16 showed an IC50 of 34 nM against PDE9 and more than 55-fold selectivity against other PDEs. In addition, this compound displayed remarkable metal-chelating capacity and a considerable ability to halt copper redox cycling. Notably, in comparison to the reference compound clioquinol, it inhibited metal-induced Aβ1-42 aggregation more effectively and promoted greater disassembly of the highly structured Aβ fibrils generated through Cu2+-induced Aβ aggregation. These activities of 16, together with its favorable blood-brain barrier permeability, suggest that 16 may be a promising compound for treatment of AD.
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Affiliation(s)
- Tao Su
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Tianhua Zhang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Shishun Xie
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Jun Yan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Yinuo Wu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Xingshu Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Ling Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Hai-Bin Luo
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
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50
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Yang T, Yang L, Zhang C, Wang Y, Ma X, Wang K, Luo J, Yao C, Wang X, Wang X. A copper–amyloid-β targeted fluorescent chelator as a potential theranostic agent for Alzheimer's disease. Inorg Chem Front 2016. [DOI: 10.1039/c6qi00268d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A fluorescent chelator is able to specifically target and attenuate Cu2+–Aβ aggregates in the brain of mice with Alzheimer's disease, which can be visualized by fluorescence imaging of the chelator.
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Affiliation(s)
- Tao Yang
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Liu Yang
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Changli Zhang
- Department of Chemistry
- Nanjing Xiaozhuang College
- Nanjing
- P. R. China
| | - Yanqing Wang
- Institute of Applied Chemistry and Environmental Engineering
- Yancheng Teachers University
- Yancheng 224002
- P. R. China
| | - Xiang Ma
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Kun Wang
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Jian Luo
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Cheng Yao
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Xiaoyong Wang
- State Key Laboratory of Pharmaceutical Biotechnology
- School of Life Sciences; State Key Laboratory of Analytical Chemistry for Life Science
- Nanjing University
- Nanjing
- P. R. China
| | - Xiaohui Wang
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
- State Key Laboratory of Coordination Chemistry
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