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Radiation as a Tool against Neurodegeneration-A Potential Treatment for Amyloidosis in the Central Nervous System. Int J Mol Sci 2022; 23:ijms232012265. [PMID: 36293118 PMCID: PMC9603404 DOI: 10.3390/ijms232012265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/07/2022] [Accepted: 10/12/2022] [Indexed: 11/20/2022] Open
Abstract
Radiotherapy (RT) is a relatively safe and established treatment for cancer, where the goal is to kill tumoral cells with the lowest toxicity to healthy tissues. Using it for disorders involving cell loss is counterintuitive. However, ionizing radiation has a hormetic nature: it can have deleterious or beneficial effects depending on how it is applied. Current evidence indicates that radiation could be a promising treatment for neurodegenerative disorders involving protein misfolding and amyloidogenesis, such as Alzheimer's or Parkinson's diseases. Low-dose RT can trigger antioxidant, anti-inflammatory and tissue regeneration responses. RT has been used to treat peripheral amyloidosis, which is very similar to other neurodegenerative disorders from a molecular perspective. Ionizing radiation prevents amyloid formation and other hallmarks in cell cultures, animal models and pilot clinical trials. Although some hypotheses have been formulated, the mechanism of action of RT on systemic amyloid deposits is still unclear, and uncertainty remains regarding its impact in the central nervous system. However, new RT modalities such as low-dose RT, FLASH, proton therapy or nanoparticle-enhanced RT could increase biological effects while reducing toxicity. Current evidence indicates that the potential of RT to treat neurodegeneration should be further explored.
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Variation in the concentration and regional distribution of magnetic nanoparticles in human brains, with and without Alzheimer's disease, from the UK. Sci Rep 2021; 11:9363. [PMID: 33931662 PMCID: PMC8087805 DOI: 10.1038/s41598-021-88725-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 04/15/2021] [Indexed: 02/08/2023] Open
Abstract
The presence of magnetic nanoparticles (MNPs) in the human brain was attributed until recently to endogenous formation; associated with a putative navigational sense, or with pathological mishandling of brain iron within senile plaques. Conversely, an exogenous, high-temperature source of brain MNPs has been newly identified, based on their variable sizes/concentrations, rounded shapes/surface crystallites, and co-association with non-physiological metals (e.g., platinum, cobalt). Here, we examined the concentration and regional distribution of brain magnetite/maghemite, by magnetic remanence measurements of 147 samples of fresh/frozen tissues, from Alzheimer's disease (AD) and pathologically-unremarkable brains (80-98 years at death) from the Manchester Brain Bank (MBB), UK. The magnetite/maghemite concentrations varied between individual cases, and different brain regions, with no significant difference between the AD and non-AD cases. Similarly, all the elderly MBB brains contain varying concentrations of non-physiological metals (e.g. lead, cerium), suggesting universal incursion of environmentally-sourced particles, likely across the geriatric blood-brain barrier (BBB). Cerebellar Manchester samples contained significantly lower (~ 9×) ferrimagnetic content compared with those from a young (29 years ave.), neurologically-damaged Mexico City cohort. Investigation of younger, variably-exposed cohorts, prior to loss of BBB integrity, seems essential to understand early brain impacts of exposure to exogenous magnetite/maghemite and other metal-rich pollution particles.
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van der Weerd L, Lefering A, Webb A, Egli R, Bossoni L. Effects of Alzheimer's disease and formalin fixation on the different mineralised-iron forms in the human brain. Sci Rep 2020; 10:16440. [PMID: 33020534 PMCID: PMC7536241 DOI: 10.1038/s41598-020-73324-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 09/15/2020] [Indexed: 12/18/2022] Open
Abstract
Iron accumulation in the brain is a phenomenon common to many neurodegenerative diseases, perhaps most notably Alzheimer’s disease (AD). We present here magnetic analyses of post-mortem brain tissue of patients who had severe Alzheimer’s disease, and compare the results with those from healthy controls. Isothermal remanent magnetization experiments were performed to assess the extent to which different magnetic carriers are affected by AD pathology and formalin fixation. While Alzheimer’s brain material did not show higher levels of magnetite/maghemite nanoparticles than corresponding controls, the ferrihydrite mineral, known to be found within the core of ferritin proteins and hemosiderin aggregates, almost doubled in concentration in patients with Alzheimer’s pathology, strengthening the conclusions of our previous studies. As part of this study, we also investigated the effects of sample preparation, by performing experiments on frozen tissue as well as tissue which had been fixed in formalin for a period of 5 months. Our results showed that the two different preparations did not critically affect the concentration of magnetic carriers in brain tissue, as observable by SQUID magnetometry.
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Affiliation(s)
- Louise van der Weerd
- Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands.,Department of Human Genetics, Leiden University Medical Center, Einthovenweg 20, 2333 ZC, Leiden, The Netherlands
| | - Anton Lefering
- Reactor Institute, Delft University of Technology, Delft, The Netherlands
| | - Andrew Webb
- Department of Human Genetics, Leiden University Medical Center, Einthovenweg 20, 2333 ZC, Leiden, The Netherlands
| | - Ramon Egli
- Central Institute for Meteorology and Geo-dynamics (ZAMG), Vienna, Austria
| | - Lucia Bossoni
- Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands.
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Maruthupandy M, Muneeswaran T, Anand M, Quero F. Highly efficient multifunctional graphene/chitosan/magnetite nanocomposites for photocatalytic degradation of important dye molecules. Int J Biol Macromol 2020; 153:736-746. [DOI: 10.1016/j.ijbiomac.2020.03.045] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 03/04/2020] [Accepted: 03/06/2020] [Indexed: 12/13/2022]
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Abstract
Iron is critically important and highly regulated trace metal in the human body. However, in its free ion form, it is known to be cytotoxic; therefore, it is bound to iron storing protein, ferritin. Ferritin is a key regulator of body iron homeostasis able to form various types of minerals depending on the tissue environment. Each mineral, e.g. magnetite, maghemite, goethite, akaganeite or hematite, present in the ferritin core carry different characteristics possibly affecting cells in the tissue. In specific cases, it can lead to disease development. Widely studied connection with neurodegenerative conditions is widely studied, including Alzheimer disease. Although the exact ferritin structure and its distribution throughout a human body are still not fully known, many studies have attempted to elucidate the mechanisms involved in its regulation and pathogenesis. In this review, we try to summarize the iron uptake into the body. Next, we discuss the known occurrence of ferritin in human tissues. Lastly, we also examine the formation of iron oxides and their involvement in brain functions.
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Gumpelmayer M, Nguyen M, Molnár G, Bousseksou A, Meunier B, Robert A. Magnetite Fe3
O4
Has no Intrinsic Peroxidase Activity, and Is Probably not Involved in Alzheimer's Oxidative Stress. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807676] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Michelle Gumpelmayer
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS); 205 route de Narbonne, BP 44099 31077 Toulouse cedex 4 France
- Université de Toulouse; 31077 Toulouse Cedex 4 France
| | - Michel Nguyen
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS); 205 route de Narbonne, BP 44099 31077 Toulouse cedex 4 France
- Université de Toulouse; 31077 Toulouse Cedex 4 France
| | - Gábor Molnár
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS); 205 route de Narbonne, BP 44099 31077 Toulouse cedex 4 France
- Université de Toulouse; 31077 Toulouse Cedex 4 France
| | - Azzedine Bousseksou
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS); 205 route de Narbonne, BP 44099 31077 Toulouse cedex 4 France
- Université de Toulouse; 31077 Toulouse Cedex 4 France
| | - Bernard Meunier
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS); 205 route de Narbonne, BP 44099 31077 Toulouse cedex 4 France
- Université de Toulouse; 31077 Toulouse Cedex 4 France
- School of Chemical Engineering and Light Industry; Guangdong University of Technology (GDUT); Higher Education Mega Center; 100 Waihuan Xi road, Panyu District Guangzhou 510006 P. R. China
| | - Anne Robert
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS); 205 route de Narbonne, BP 44099 31077 Toulouse cedex 4 France
- Université de Toulouse; 31077 Toulouse Cedex 4 France
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Gumpelmayer M, Nguyen M, Molnár G, Bousseksou A, Meunier B, Robert A. Magnetite Fe3
O4
Has no Intrinsic Peroxidase Activity, and Is Probably not Involved in Alzheimer's Oxidative Stress. Angew Chem Int Ed Engl 2018; 57:14758-14763. [DOI: 10.1002/anie.201807676] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Michelle Gumpelmayer
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS); 205 route de Narbonne, BP 44099 31077 Toulouse cedex 4 France
- Université de Toulouse; 31077 Toulouse Cedex 4 France
| | - Michel Nguyen
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS); 205 route de Narbonne, BP 44099 31077 Toulouse cedex 4 France
- Université de Toulouse; 31077 Toulouse Cedex 4 France
| | - Gábor Molnár
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS); 205 route de Narbonne, BP 44099 31077 Toulouse cedex 4 France
- Université de Toulouse; 31077 Toulouse Cedex 4 France
| | - Azzedine Bousseksou
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS); 205 route de Narbonne, BP 44099 31077 Toulouse cedex 4 France
- Université de Toulouse; 31077 Toulouse Cedex 4 France
| | - Bernard Meunier
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS); 205 route de Narbonne, BP 44099 31077 Toulouse cedex 4 France
- Université de Toulouse; 31077 Toulouse Cedex 4 France
- School of Chemical Engineering and Light Industry; Guangdong University of Technology (GDUT); Higher Education Mega Center; 100 Waihuan Xi road, Panyu District Guangzhou 510006 P. R. China
| | - Anne Robert
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS); 205 route de Narbonne, BP 44099 31077 Toulouse cedex 4 France
- Université de Toulouse; 31077 Toulouse Cedex 4 France
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Tahirbegi IB, Pardo WA, Alvira M, Mir M, Samitier J. Amyloid Aβ 42, a promoter of magnetite nanoparticle formation in Alzheimer's disease. NANOTECHNOLOGY 2016; 27:465102. [PMID: 27734811 DOI: 10.1088/0957-4484/27/46/465102] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The accumulation of iron oxides-mainly magnetite-with amyloid peptide is a key process in the development of Alzheimer's disease (AD). However, the mechanism for biogeneration of magnetite inside the brain of someone with AD is still unclear. The iron-storing protein ferritin has been identified as the main magnetite-storing molecule. However, accumulations of magnetite in AD are not correlated with an increase in ferritin, leaving this question unresolved. Here we demonstrate the key role of amyloid peptide Aβ 42, one of the main hallmarks of AD, in the generation of magnetite nanoparticles in the absence of ferritin. The capacity of amyloid peptide to bind and concentrate iron hydroxides, the basis for the formation of magnetite, benefits the spontaneous synthesis of these nanoparticles, even under unfavorable conditions for their formation. Using scanning and transmission electron microscopy, electron energy loss spectroscopy and magnetic force microscopy we characterized the capacity of amyloid peptide Aβ 42 to promote magnetite formation.
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Affiliation(s)
- Islam Bogachan Tahirbegi
- Nanobioengineering Laboratory, Institute for Bioengineering of Catalonia (IBEC), Baldiri Reixac, 10-12, Barcelona 08028, Spain. Department of Electronics, University of Barcelona (UB), Martí i Franquès, 1, Barcelona 08028, Spain
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Teller S, Tahirbegi IB, Mir M, Samitier J, Soriano J. Magnetite-Amyloid-β deteriorates activity and functional organization in an in vitro model for Alzheimer's disease. Sci Rep 2015; 5:17261. [PMID: 26608215 PMCID: PMC4660300 DOI: 10.1038/srep17261] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Accepted: 10/26/2015] [Indexed: 11/09/2022] Open
Abstract
The understanding of the key mechanisms behind human brain deterioration in Alzheimer' disease (AD) is a highly active field of research. The most widespread hypothesis considers a cascade of events initiated by amyloid-β peptide fibrils that ultimately lead to the formation of the lethal amyloid plaques. Recent studies have shown that other agents, in particular magnetite, can also play a pivotal role. To shed light on the action of magnetite and amyloid-β in the deterioration of neuronal circuits, we investigated their capacity to alter spontaneous activity patterns in cultured neuronal networks. Using a versatile experimental platform that allows the parallel monitoring of several cultures, the activity in controls was compared with the one in cultures dosed with magnetite, amyloid-β and magnetite-amyloid-β complex. A prominent degradation in spontaneous activity was observed solely when amyloid-β and magnetite acted together. Our work suggests that magnetite nanoparticles have a more prominent role in AD than previously thought, and may bring new insights in the understanding of the damaging action of magnetite-amyloid-β complex. Our experimental system also offers new interesting perspectives to explore key biochemical players in neurological disorders through a controlled, model system manner.
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Affiliation(s)
- Sara Teller
- Departament d’Estructura i Constituents de la Matèria, Universitat de Barcelona, Barcelona, E-08028, Spain
| | - Islam Bogachan Tahirbegi
- Nanobioengineering Group, Institute for Bioengineering of Catalonia (IBEC), Barcelona, E-08028, Spain
- Departament d’Electrònica, Universitat de Barcelona, Barcelona, E-08028, Spain
| | - Mònica Mir
- Nanobioengineering Group, Institute for Bioengineering of Catalonia (IBEC), Barcelona, E-08028, Spain
- Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Barcelona, E-08028, Spain
| | - Josep Samitier
- Nanobioengineering Group, Institute for Bioengineering of Catalonia (IBEC), Barcelona, E-08028, Spain
- Departament d’Electrònica, Universitat de Barcelona, Barcelona, E-08028, Spain
- Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Barcelona, E-08028, Spain
| | - Jordi Soriano
- Departament d’Estructura i Constituents de la Matèria, Universitat de Barcelona, Barcelona, E-08028, Spain
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Li S, Wang Y, Wang F, Wang Y, Zhang X, Zhao M, Feng Q, Wu J, Zhao S, Wu W, Peng S. Small molecule PZL318: forming fluorescent nanoparticles capable of tracing their interactions with cancer cells and activated platelets, slowing tumor growth and inhibiting thrombosis. Int J Nanomedicine 2015; 10:5273-92. [PMID: 26345234 PMCID: PMC4554418 DOI: 10.2147/ijn.s88052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Low selectivity of chemotherapy correlates with poor outcomes of cancer patients. To improve this issue, a novel agent, N-(1-[3-methoxycarbonyl-4-hydroxyphenyl]-β-carboline-3-carbonyl)-Trp-Lys-OBzl (PZL318), was reported here. The transmission electron microscopy, scanning electron microscopy, and atomic force microscopy images demonstrated that PZL318 can form nanoparticles. Fluorescent and confocal images visualized that PZL318 formed fluorescent nanoparticles capable of targeting cancer cells and tracing their interactions with cancer cells. In vitro, 40 μM of PZL318 inhibited the proliferation of tumorigenic cells, but not nontumorigenic cells. In vivo, 10 nmol/kg of PZL318 slowed the tumor growth of S180 mice and alleviated the thrombosis of ferric chloride-treated ICR mice, while 100 μmol/kg of PZL318 did not injure healthy mice and they exhibited no liver toxicity. By analyzing Fourier transform–mass spectrometry and rotating-frame Overhauser spectroscopy (ROESY) two-dimensional nuclear magnetic resonance spectra, the chemical mechanism of PZL318-forming trimers and nanoparticles was explored. By using mesoscale simulation, a nanoparticle of 3.01 nm in diameter was predicted containing 13 trimers. Scavenging free radicals, downregulating sP-selectin expression and intercalating toward DNA were correlated with the antitumor mechanism of PZL318.
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Affiliation(s)
- Shan Li
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Beijing Laboratory of Biomedical Materials, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, College of Pharmaceutical Sciences of Capital Medical University, Beijing, People's Republic of China
| | - Yuji Wang
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Beijing Laboratory of Biomedical Materials, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, College of Pharmaceutical Sciences of Capital Medical University, Beijing, People's Republic of China
| | - Feng Wang
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Beijing Laboratory of Biomedical Materials, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, College of Pharmaceutical Sciences of Capital Medical University, Beijing, People's Republic of China
| | - Yaonan Wang
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Beijing Laboratory of Biomedical Materials, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, College of Pharmaceutical Sciences of Capital Medical University, Beijing, People's Republic of China
| | - Xiaoyi Zhang
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Beijing Laboratory of Biomedical Materials, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, College of Pharmaceutical Sciences of Capital Medical University, Beijing, People's Republic of China
| | - Ming Zhao
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Beijing Laboratory of Biomedical Materials, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, College of Pharmaceutical Sciences of Capital Medical University, Beijing, People's Republic of China ; Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Qiqi Feng
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Beijing Laboratory of Biomedical Materials, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, College of Pharmaceutical Sciences of Capital Medical University, Beijing, People's Republic of China
| | - Jianhui Wu
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Beijing Laboratory of Biomedical Materials, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, College of Pharmaceutical Sciences of Capital Medical University, Beijing, People's Republic of China
| | - Shurui Zhao
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Beijing Laboratory of Biomedical Materials, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, College of Pharmaceutical Sciences of Capital Medical University, Beijing, People's Republic of China
| | - Wei Wu
- College of Basic Medicine of Capital Medical University, Beijing, People's Republic of China
| | - Shiqi Peng
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Beijing Laboratory of Biomedical Materials, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, College of Pharmaceutical Sciences of Capital Medical University, Beijing, People's Republic of China
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Zhang M, Mao X, Yu Y, Wang CX, Yang YL, Wang C. Nanomaterials for reducing amyloid cytotoxicity. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:3780-801. [PMID: 23722464 DOI: 10.1002/adma.201301210] [Citation(s) in RCA: 132] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Indexed: 05/20/2023]
Abstract
This review is intended to reflect the recent progress on therapeutic applications of nanomaterials in amyloid diseases. The progress on anti-amyloid functions of various nanomaterials including inorganic nanoparticles, polymeric nanoparticles, carbon nanomaterials and biomolecular aggregates, is reviewed and discussed. The main functionalization strategies for general nanoparticle modifications are reviewed for potential applications of targeted therapeutics. The interaction mechanisms between amyloid peptides and nanomaterials are discussed from the perspectives of dominant interactions and kinetics. The encapsulation of anti-amyloid drugs, targeted drug delivery, controlled drug release and drug delivery crossing blood brain barrier by application of nanomaterials would also improve the therapeutics of amyloid diseases.
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Affiliation(s)
- Min Zhang
- National Center for Nanoscience and Technology, Beijing 100190, China
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12
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Zhu H, Wang Y, Wang Y, Zhao S, Zhao M, Gui L, Xu W, Chen XA, Wang Y, Peng S. Folded Conformation, Cyclic Pentamer, Nano-Structure and PAD4 Binding Mode of YW3-56. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2013; 117:10070-10078. [PMID: 23795230 PMCID: PMC3685498 DOI: 10.1021/jp311726k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The physical and chemical mechanisms of small molecules with pharmacological activity forming nano-structures are developing into a new field of nano-medicine. By using ROESY 2D NMR spectroscopy, trandem mass spectroscopy, transmission electron microscopy and computer-assisted molecular modeling, this paper demonstrated the contribution of the folded conformation, the intra- and intermolecular π-π stacking, the intra- and intermolecular hydrogen bonds, and the receptor binding free energy of 6-dimethylaminonaph-2-yl-{N-S-[1-benzylcarba-moyl-4-(2-chloroacetamidobutyl)]-carboxamide (YW3-56) to the rapid formation of nano-rings and the slow formation of nano-capsules. Thus we have developed a strategy that makes it possible to elucidate the physical and chemical mechanisms of bioactive small molecules forming nano-structures.
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Affiliation(s)
- Haimei Zhu
- College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P.R. China
| | - Yuji Wang
- College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P.R. China
| | - Yaonan Wang
- College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P.R. China
| | - Shurui Zhao
- College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P.R. China
| | - Ming Zhao
- College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P.R. China
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Lin Gui
- College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P.R. China
| | - Wenyun Xu
- College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P.R. China
| | - Xiangyun Amy Chen
- Center for Eukaryotic Gene Regulation, Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA 16802, USA
| | - Yanming Wang
- Center for Eukaryotic Gene Regulation, Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA 16802, USA
| | - Shiqi Peng
- College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P.R. China
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