1
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Sobek J, Li J, Combes BF, Gerez JA, Henrich MT, Geibl FF, Nilsson PR, Shi K, Rominger A, Oertel WH, Nitsch RM, Nordberg A, Ågren H, Ni R. Efficient characterization of multiple binding sites of small molecule imaging ligands on amyloid-beta, tau and alpha-synuclein. Eur J Nucl Med Mol Imaging 2024:10.1007/s00259-024-06806-7. [PMID: 38953933 DOI: 10.1007/s00259-024-06806-7] [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: 03/16/2024] [Accepted: 06/17/2024] [Indexed: 07/04/2024]
Abstract
PURPOSE There is an unmet need for compounds to detect fibrillar forms of alpha-synuclein (αSyn) and 4-repeat tau, which are critical in many neurodegenerative diseases. Here, we aim to develop an efficient surface plasmon resonance (SPR)-based assay to facilitate the characterization of small molecules that can bind these fibrils. METHODS SPR measurements were conducted to characterize the binding properties of fluorescent ligands/compounds toward recombinant amyloid-beta (Aβ)42, K18-tau, full-length 2N4R-tau and αSyn fibrils. In silico modeling was performed to examine the binding pockets of ligands on αSyn fibrils. Immunofluorescence staining of postmortem brain tissue slices from Parkinson's disease patients and mouse models was performed with fluorescence ligands and specific antibodies. RESULTS We optimized the protocol for the immobilization of Aβ42, K18-tau, full-length 2N4R-tau and αSyn fibrils in a controlled aggregation state on SPR-sensor chips and for assessing their binding to ligands. The SPR results from the analysis of binding kinetics suggested the presence of at least two binding sites for all fibrils, including luminescent conjugated oligothiophenes, benzothiazole derivatives, nonfluorescent methylene blue and lansoprazole. In silico modeling studies for αSyn (6H6B) revealed four binding sites with a preference for one site on the surface. Immunofluorescence staining validated the detection of pS129-αSyn positivity in the brains of Parkinson's disease patients and αSyn preformed-fibril injected mice, 6E10-positive Aβ in arcAβ mice, and AT-8/AT-100-positivity in pR5 mice. CONCLUSION SPR measurements of small molecules binding to Aβ42, K18/full-length 2N4R-tau and αSyn fibrils suggested the existence of multiple binding sites. This approach may provide efficient characterization of compounds for neurodegenerative disease-relevant proteinopathies.
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Affiliation(s)
- Jens Sobek
- Functional Genomics Center, University of Zurich & ETH Zurich, Zürich, Switzerland
| | - Junhao Li
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
| | - Benjamin F Combes
- Institute for Regenerative Medicine, University of Zurich, Wagistrasse 12, 8952, Zürich, Switzerland
| | - Juan A Gerez
- Laboratory of Physical Chemistry, Department of Chemistry and Applied Biosciences, ETH Zurich, Zürich, Switzerland
| | - Martin T Henrich
- Department of Psychiatry and Psychotherapy, Philipps-University Marburg, Marburg, Germany
- Department of Neurology, Philipps-University Marburg, Marburg, Germany
| | - Fanni F Geibl
- Department of Psychiatry and Psychotherapy, Philipps-University Marburg, Marburg, Germany
- Department of Neurology, Philipps-University Marburg, Marburg, Germany
| | - Peter R Nilsson
- Divison of Chemistry, Department of Physics, Chemistry and Biology, Linköping University, Linköping, Sweden
| | - Kuangyu Shi
- Department of Nuclear Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Axel Rominger
- Department of Nuclear Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Wolfgang H Oertel
- Department of Psychiatry and Psychotherapy, Philipps-University Marburg, Marburg, Germany
- Department of Neurology, Philipps-University Marburg, Marburg, Germany
| | - Roger M Nitsch
- Institute for Regenerative Medicine, University of Zurich, Wagistrasse 12, 8952, Zürich, Switzerland
| | - Agneta Nordberg
- Divison of Clinical Geriatrics, Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
| | - Hans Ågren
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
| | - Ruiqing Ni
- Institute for Regenerative Medicine, University of Zurich, Wagistrasse 12, 8952, Zürich, Switzerland.
- Department of Nuclear Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
- Institute for Biomedical Engineering, University of Zurich & ETH Zurich, Zürich, Switzerland.
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2
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Porcu S, Corpino R, Carbonaro CM, Ricci PC, Vargiu AV, Sanna AL, Sforazzini G, Chiriu D. Promising Molecular Architectures for Two-Photon Probes in the Diagnosis of α-Synuclein Aggregates. Molecules 2024; 29:2817. [PMID: 38930882 PMCID: PMC11207056 DOI: 10.3390/molecules29122817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 05/24/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024] Open
Abstract
The abnormal deposition of protein in the brain is the central factor in neurodegenerative disorders (NDs). These detrimental aggregates, stemming from the misfolding and subsequent irregular aggregation of α-synuclein protein, are primarily accountable for conditions such as Parkinson's disease, Alzheimer's disease, and dementia. Two-photon-excited (TPE) probes are a promising tool for the early-stage diagnosis of these pathologies as they provide accurate spatial resolution, minimal intrusion, and the ability for prolonged observation. To identify compounds with the potential to function as diagnostic probes using two-photon techniques, we explore three distinct categories of compounds: Hydroxyl azobenzene (AZO-OH); Dicyano-vinyl bithiophene (DCVBT); and Tetra-amino phthalocyanine (PcZnNH2). The molecules were structurally and optically characterized using a multi-technique approach via UV-vis absorption, Raman spectroscopy, three-dimensional fluorescence mapping (PLE), time-resolved photoluminescence (TRPL), and pump and probe measurements. Furthermore, quantum chemical and molecular docking calculations were performed to provide insights into the photophysical properties of the compounds as well as to assess their affinity with the α-synuclein protein. This innovative approach seeks to enhance the accuracy of in vivo probing, contributing to early Parkinson's disease (PD) detection and ultimately allowing for targeted intervention strategies.
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Affiliation(s)
- Stefania Porcu
- Department of Physics, University of Cagliari, Cittadella Universitaria, SP n°8, 09042 Monserrato, CA, Italy; (S.P.); (R.C.); (C.M.C.); (P.C.R.); (A.V.V.)
| | - Riccardo Corpino
- Department of Physics, University of Cagliari, Cittadella Universitaria, SP n°8, 09042 Monserrato, CA, Italy; (S.P.); (R.C.); (C.M.C.); (P.C.R.); (A.V.V.)
| | - Carlo Maria Carbonaro
- Department of Physics, University of Cagliari, Cittadella Universitaria, SP n°8, 09042 Monserrato, CA, Italy; (S.P.); (R.C.); (C.M.C.); (P.C.R.); (A.V.V.)
| | - Pier Carlo Ricci
- Department of Physics, University of Cagliari, Cittadella Universitaria, SP n°8, 09042 Monserrato, CA, Italy; (S.P.); (R.C.); (C.M.C.); (P.C.R.); (A.V.V.)
| | - Attilio Vittorio Vargiu
- Department of Physics, University of Cagliari, Cittadella Universitaria, SP n°8, 09042 Monserrato, CA, Italy; (S.P.); (R.C.); (C.M.C.); (P.C.R.); (A.V.V.)
| | - Anna Laura Sanna
- Department of Chemistry and Hearth Science, University of Cagliari, Cittadella Universitaria, SP n°8, 09042 Monserrato, CA, Italy;
| | - Giuseppe Sforazzini
- Department of Chemistry and Hearth Science, University of Cagliari, Cittadella Universitaria, SP n°8, 09042 Monserrato, CA, Italy;
| | - Daniele Chiriu
- Department of Physics, University of Cagliari, Cittadella Universitaria, SP n°8, 09042 Monserrato, CA, Italy; (S.P.); (R.C.); (C.M.C.); (P.C.R.); (A.V.V.)
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3
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Wang B, Shi J, Guo N, Shao L, Zhai W, Jiang L, Zhao F, Wang J, Wang J, Du L, Pang X, Yan L. Rational design synthesis and evaluation of a novel near-infrared fluorescent probe for selective imaging of amyloid-β aggregates in Alzheimer's disease. Anal Chim Acta 2023; 1281:341900. [PMID: 38783740 DOI: 10.1016/j.aca.2023.341900] [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: 07/24/2023] [Revised: 09/19/2023] [Accepted: 10/10/2023] [Indexed: 05/25/2024]
Abstract
Alzheimer's disease (AD) is a degenerative neurological disorder that remains incurable to date, seriously affecting the quality of life and health of those affected. One of the key neuropathological hallmarks of AD is the formation of amyloid-β (Aβ) plaques. Near-infrared (NIR) probes that possess a large Stokes shift show great potential for imaging of Aβ plaques in vivo and in vitro. Herein, we proposed a rational strategy for design and synthesis of a series of NIR fluorescent probes that incorporate a tricarbonitrile group as a strong electron-withdrawing group (EWG) to enable NIR emission and large Stokes shift for optimal imaging of Aβ plaques. The probe TCM-UM exhibited remarkable in vitro performance, including strong NIR emission (λem = 670 nm), large Stokes shift (120-245 nm), and its affinity for Aβ42 aggregates (Kd = 43.78 ± 4.09 nM) was superior to the commercially available probe Thioflavin T (ThT, Kd = 896.04 ± 33.43 nM). Further, TCM-UM was selected for imaging Aβ plaques in brain tissue slices and APP/PS1 transgenic (AD) mice, the results indicated that TCM-UM had an excellent ability to penetrate the blood-brain barrier (BBB) compared with ThT, and it could effectively distinguish wild-type (Wt) mice and APP/PS1 transgenic (AD) mice.
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Affiliation(s)
- Bingxin Wang
- State Key Laboratory of Antiviral Drugs, School of Pharmacy, Henan University, N. Jinming Ave., Kaifeng, Henan, 475004, China
| | - Junzhuo Shi
- State Key Laboratory of Antiviral Drugs, School of Pharmacy, Henan University, N. Jinming Ave., Kaifeng, Henan, 475004, China
| | - Ning Guo
- State Key Laboratory of Antiviral Drugs, School of Pharmacy, Henan University, N. Jinming Ave., Kaifeng, Henan, 475004, China
| | - Lulian Shao
- State Key Laboratory of Antiviral Drugs, School of Pharmacy, Henan University, N. Jinming Ave., Kaifeng, Henan, 475004, China
| | - Weibin Zhai
- State Key Laboratory of Antiviral Drugs, School of Pharmacy, Henan University, N. Jinming Ave., Kaifeng, Henan, 475004, China
| | - Lei Jiang
- State Key Laboratory of Antiviral Drugs, School of Pharmacy, Henan University, N. Jinming Ave., Kaifeng, Henan, 475004, China
| | - Fenqin Zhao
- State Key Laboratory of Antiviral Drugs, School of Pharmacy, Henan University, N. Jinming Ave., Kaifeng, Henan, 475004, China
| | - Jianhong Wang
- Key Laboratory of Natural Medicine and Immuno-Engineering of Henan Province, Henan University, N. Jinming Ave., Kaifeng, Henan, 475004, China
| | - Junfeng Wang
- Gordon Center for Medical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 125 Nushua St, Boston, MA, 02149, USA
| | - Lida Du
- Institute of Molecular Medicine & Innovative Pharmaceutics, Qingdao University, Qingdao, 266071, China.
| | - Xiaobin Pang
- State Key Laboratory of Antiviral Drugs, School of Pharmacy, Henan University, N. Jinming Ave., Kaifeng, Henan, 475004, China.
| | - Lin Yan
- State Key Laboratory of Antiviral Drugs, School of Pharmacy, Henan University, N. Jinming Ave., Kaifeng, Henan, 475004, China.
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Grabarz AM, Ośmiałowski B. Benchmarking Density Functional Approximations for Excited-State Properties of Fluorescent Dyes. Molecules 2021; 26:7434. [PMID: 34946515 PMCID: PMC8703901 DOI: 10.3390/molecules26247434] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/28/2021] [Accepted: 12/04/2021] [Indexed: 12/05/2022] Open
Abstract
This study presents an extensive analysis of the predictive power of time-dependent density functional theory in determining the excited-state properties of two groups of important fluorescent dyes, difluoroboranes and hydroxyphenylimidazo[1,2-a]pyridine derivatives. To ensure statistically meaningful results, the data set is comprised of 85 molecules manifesting diverse photophysical properties. The vertical excitation energies and dipole moments (in the electronic ground and excited states) of the aforementioned dyes were determined using the RI-CC2 method (reference) and with 18 density functional approximations (DFA). The set encompasses DFAs with varying amounts of exact exchange energy (EEX): from 0% (e.g., SVWN, BLYP), through a medium (e.g., TPSSh, B3LYP), up to a major contribution of EEX (e.g., BMK, MN15). It also includes range-separated hybrids (CAM-B3LYP, LC-BLYP). Similar error profiles of vertical energy were obtained for both dye groups, although the errors related to hydroxyphenylimidazopiridines are significantly larger. Overall, functionals including 40-55% of EEX (SOGGA11-X, BMK, M06-2X) ensure satisfactory agreement with the reference vertical excitation energies obtained using the RI-CC2 method; however, MN15 significantly outperforms them, providing a mean absolute error of merely 0.04 eV together with a very high correlation coefficient (R2 = 0.98). Within the investigated set of functionals, there is no single functional that would equally accurately determine ground- and excited-state dipole moments of difluoroboranes and hydroxyphenylimidazopiridine derivatives. Depending on the chosen set of dyes, the most accurate μGS predictions were delivered by MN15 incorporating a major EEX contribution (difluoroboranes) and by PBE0 containing a minor EEX fraction (hydroxyphenylimidazopiridines). Reverse trends are observed for μES, i.e., for difluoroboranes the best results were obtained with functionals including a minor fraction of EEX, specifically PBE0, while in the case of hydroxyphenylimidazopiridines, much more accurate predictions were provided by functionals incorporating a major EEX contribution (BMK, MN15).
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Affiliation(s)
- Anna M. Grabarz
- Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, PL-50370 Wrocław, Poland
| | - Borys Ośmiałowski
- Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7, PL-87100 Toruń, Poland;
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5
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Udayan S, Sherin DR, Vijaykumar S, Manojkumar TK, Nampoori VPN, Thomas S. Exploring the LDS 821 dye as a potential NIR probe for the two photon imaging of amyloid fibrils. Biomater Sci 2020; 8:6082-6092. [PMID: 33000782 DOI: 10.1039/d0bm00548g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
We report a commercially available benzothiazolium based dye LDS 821 (Styryl 9M) as a near infrared fluorescent probe for the detection of lysozyme amyloid fibrils. Change in the photophysical properties of the dye with respect to the change in viscosity of the environment is investigated. Increment in fluorescence lifetime and quantum yield with increment in viscosity proves the dye as a molecular rotor. The dye, upon binding with lysozyme fibrils, exhibits a red shift in the absorption spectrum with increased quantum yield. Strong fluorescence emission near the biological window as compared with Thioflavin T makes the LDS 821 dye a potential probe for imaging amyloid fibrils in vivo. Molecular docking studies were carried out to understand the mode of interaction between the dye and amyloid fibrils. Nonlinear optical properties of the dye upon incorporation with amyloid fibrils were explored, and they show a sizeable enhancement in two photon absorption with an increase in the concentration of amyloid fibrils. The findings suggest that the nonlinear optical absorption of the LDS 821 dye can be used as an alternative marker for amyloid fibrils.
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Affiliation(s)
- Sony Udayan
- International School of photonics, Cochin University of Science and Technology, Cochin, Kerala, India.
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6
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Affiliation(s)
- Md. Mehboob Alam
- Department of Chemistry, Indian Institute of Technology Bhilai, Sejbahar, Raipur, India
| | - Kenneth Ruud
- Hylleraas Centre for Quantum Molecular Sciences, Department of Chemistry, UiT – The Arctic University of Norway, Tromsø, Norway
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7
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Bogdanov G, Tillotson JP, Khrustalev VN, Rigin S, Timofeeva TV. Synthesis, crystal structure studies and solvatochromic behaviour of two 2-{5-[4-(dimethylamino)phenyl]penta-2,4-dien-1-ylidene}malononitrile derivatives. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2019; 75:1175-1181. [PMID: 31380801 DOI: 10.1107/s2053229619010398] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 07/22/2019] [Indexed: 11/10/2022]
Abstract
The synthesis, crystal structure studies and solvatochromic behavior of 2-{(2E,4E)-5-[4-(dimethylamino)phenyl]penta-2,4-dien-1-ylidene}malononitrile, C16H15N3 (DCV[3]), and 2-{(2E,4E,6E)-7-[4-(dimethylamino)phenyl]hepta-2,4,6-trien-1-ylidene}malononitrile, C18H17N3 (DCV[4]), are reported and discussed in comparison with their homologs having a shorter length of the π-conjugated bridge. The compounds of this series have potential use as nonlinear materials with second-order effects due to their donor-acceptor structures. However, DCV[3] and DCV[4] crystallized in the centrosymmetric space group P21/c which excludes their application as nonlinear optical materials in the crystalline state. They both crystallize with two independent molecules having the same molecular conformation in the asymmetric unit. The series DCV[1]-DCV[4] demonstrated reversed solvatochromic behavior in toluene, chloroform, and acetonitrile.
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Affiliation(s)
- Georgii Bogdanov
- Department of Chemistry, New Mexico Highlands University, Las Vegas, New Mexico 87701, USA
| | - John P Tillotson
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - Victor N Khrustalev
- Research Institute of Chemistry, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklay St. 6, Moscow 117198, Russian Federation
| | - Sergei Rigin
- Department of Chemistry, New Mexico Highlands University, Las Vegas, New Mexico 87701, USA
| | - Tatiana V Timofeeva
- Department of Chemistry, New Mexico Highlands University, Las Vegas, New Mexico 87701, USA
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8
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Shin J, Verwilst P, Choi H, Kang S, Han J, Kim NH, Choi JG, Oh MS, Hwang JS, Kim D, Mook-Jung I, Kim JS. Harnessing Intramolecular Rotation To Enhance Two-photon Imaging of Aβ Plaques through Minimizing Background Fluorescence. Angew Chem Int Ed Engl 2019; 58:5648-5652. [PMID: 30809896 DOI: 10.1002/anie.201900549] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 02/20/2019] [Indexed: 01/11/2023]
Abstract
The aggregation of amyloid beta (Aβ) proteins in senile plaques is a critical event during the development of Alzheimer's disease, and the postmortem detection of Aβ-rich proteinaceous deposits through fluorescent staining remains one of the most robust diagnostic tools. In animal models, fluorescence imaging can be employed to follow the progression of the disease, and among the different imaging methods, two-photon microscopy (TPM) has emerged as one of the most powerful. To date, several near-infrared-emissive two-photon dyes with a high affinity for Aβ fibrils have been developed, but there has often been a tradeoff between excellent two-photon cross-sections and large fluorescence signal-to-background ratios. In the current work, we introduced a twisted intramolecular charge state (TICT)-based de-excitation pathway, which results in a remarkable fluorescence increase of around 167-fold in the presence of Aβ fibrils, while maintaining an excellent two-photon cross section, thereby enabling high-contrast ex vivo and in vivo TPM imaging. Overall, the results suggest that adopting TICT de-excitation in two-photon fluorophores may represent a general method to overcome the tradeoff between probe brightness and signal-to-background ratio.
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Affiliation(s)
- Jinwoo Shin
- Department of Chemistry, Korea University, Seoul, 02841, Korea
| | - Peter Verwilst
- Department of Chemistry, Korea University, Seoul, 02841, Korea
| | - Hayoung Choi
- Department of Biochemistry and Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, Korea
| | - Sangrim Kang
- Department of Anatomy and Neurobiology, College of Medicine, Korea.,Department of Pathology, College of Medicine, Korea
| | - Jiyou Han
- Department of Biological Sciences, Laboratory of Stem Cell Research and Biotechnology, Hyupsung University, Hwasung-si, 18330, Korea
| | - Na Hee Kim
- Department of Biomedical Science, Graduate School, Korea
| | - Jin Gyu Choi
- Department of Life and Nanopharmaceutical Sciences, Korea
| | - Myung Sook Oh
- Department of Life and Nanopharmaceutical Sciences, Korea
| | - Ji Sun Hwang
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), Daegu, 41061, Korea
| | - Dokyoung Kim
- Department of Anatomy and Neurobiology, College of Medicine, Korea.,Department of Biomedical Science, Graduate School, Korea.,Biomedical Science Institute, Kyung Hee University, Seoul, 02447, Korea
| | - Inhee Mook-Jung
- Department of Biochemistry and Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, Korea
| | - Jong Seung Kim
- Department of Chemistry, Korea University, Seoul, 02841, Korea
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9
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Shin J, Verwilst P, Choi H, Kang S, Han J, Kim NH, Choi JG, Oh MS, Hwang JS, Kim D, Mook‐Jung I, Kim JS. Harnessing Intramolecular Rotation To Enhance Two‐photon Imaging of Aβ Plaques through Minimizing Background Fluorescence. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201900549] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Jinwoo Shin
- Department of ChemistryKorea University Seoul 02841 Korea
| | - Peter Verwilst
- Department of ChemistryKorea University Seoul 02841 Korea
| | - Hayoung Choi
- Department of Biochemistry and Biomedical SciencesCollege of MedicineSeoul National University Seoul 03080 Korea
| | - Sangrim Kang
- Department of Anatomy and NeurobiologyCollege of Medicine Korea
- Department of PathologyCollege of Medicine Korea
| | - Jiyou Han
- Department of Biological SciencesLaboratory of Stem Cell Research and BiotechnologyHyupsung University Hwasung-si 18330 Korea
| | - Na Hee Kim
- Department of Biomedical ScienceGraduate School Korea
| | - Jin Gyu Choi
- Department of Life and Nanopharmaceutical Sciences Korea
| | - Myung Sook Oh
- Department of Life and Nanopharmaceutical Sciences Korea
| | - Ji Sun Hwang
- New Drug Development CenterDaegu-Gyeongbuk Medical Innovation Foundation (DGMIF) Daegu 41061 Korea
| | - Dokyoung Kim
- Department of Anatomy and NeurobiologyCollege of Medicine Korea
- Department of Biomedical ScienceGraduate School Korea
- Biomedical Science InstituteKyung Hee University Seoul 02447 Korea
| | - Inhee Mook‐Jung
- Department of Biochemistry and Biomedical SciencesCollege of MedicineSeoul National University Seoul 03080 Korea
| | - Jong Seung Kim
- Department of ChemistryKorea University Seoul 02841 Korea
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10
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Jun YW, Cho SW, Jung J, Huh Y, Kim Y, Kim D, Ahn KH. Frontiers in Probing Alzheimer's Disease Biomarkers with Fluorescent Small Molecules. ACS CENTRAL SCIENCE 2019; 5:209-217. [PMID: 30834309 PMCID: PMC6396189 DOI: 10.1021/acscentsci.8b00951] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Indexed: 05/13/2023]
Abstract
Alzheimer's disease (AD) is the most common form of dementia. The pathogenesis of the disease is associated with aggregated amyloid-β, hyperphosphorylated tau, a high level of metal ions, abnormal enzyme activities, and reactive astrocytes. This outlook gives an overview of fluorescent small molecules targeting AD biomarkers for ex vivo and in vivo imaging. These chemical imaging probes are categorized based on the potential biomarkers, and their pros and cons are discussed. Guidelines for designing new sensing strategies as well as the desirable properties to be pursued for AD fluorescence imaging are also provided.
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Affiliation(s)
- Yong Woong Jun
- Department
of Chemistry, Pohang University of Science
and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang 37673, Republic
of Korea
| | - Seo Won Cho
- Department
of Chemistry, Pohang University of Science
and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang 37673, Republic
of Korea
| | - Junyang Jung
- Department of Anatomy and Neurobiology,
College of Medicine, Center for Converging
Humanities, and Biomedical Science Institute, Kyung Hee
University, 26 Kyungheedae-Ro, Dongdaemun-Gu, Seoul 02447, Republic of Korea
| | - Youngbuhm Huh
- Department of Anatomy and Neurobiology,
College of Medicine, Center for Converging
Humanities, and Biomedical Science Institute, Kyung Hee
University, 26 Kyungheedae-Ro, Dongdaemun-Gu, Seoul 02447, Republic of Korea
| | - YoungSoo Kim
- Integrated
Science and Engineering Division, Department of Pharmacy, and Yonsei
Institute of Pharmaceutical Sciences, Yonsei
University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
- (Y.K.)
E-mail:
| | - Dokyoung Kim
- Department of Anatomy and Neurobiology,
College of Medicine, Center for Converging
Humanities, and Biomedical Science Institute, Kyung Hee
University, 26 Kyungheedae-Ro, Dongdaemun-Gu, Seoul 02447, Republic of Korea
- (D.K.) E-mail:
| | - Kyo Han Ahn
- Department
of Chemistry, Pohang University of Science
and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang 37673, Republic
of Korea
- (K.H.A.) E-mail:
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11
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Satalkar V, Rusmore TA, Phillips E, Pan X, Benassi E, Wu Q, Ran C, Shao Y. Computational modeling of curcumin-based fluorescent probe molecules. Theor Chem Acc 2019. [DOI: 10.1007/s00214-019-2415-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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12
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Hao XL, Guo ZJ, Zhang C, Ren AM. Excellent benzocoumarin-based ratiometric two-photon fluorescent probe for H 2O 2 detection. Phys Chem Chem Phys 2018; 21:281-291. [PMID: 30520906 DOI: 10.1039/c8cp06050a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The level of hydrogen peroxide (H2O2) plays an essential role in regulating biological processes. The in vivo or in vitro detection of H2O2 in deep tissues by utilizing two-photon (TP) fluorescent probes can significantly alleviate the detection damage inflicted onto living organisms as well as facilitate high-resolution imaging when compared with one-photon (OP) fluorescent probes. However, few TP fluorescent probes possess both high fluorescence efficiency and easily distinguishable spectra for measuring H2O2. Therefore, an in-depth understanding of the relationship between the electronic structure and TP fluorescent properties and fabricating probes with excellent performance are still challenging. Consequently, we designed a series of benzocoumarin-based ratiometric TP fluorescent probes and corresponding product molecules for H2O2 detection. Thereafter, we theoretically evaluated the TP recognition performance of these compounds and studied the relationship between their molecular structure and TP performance by means of time-dependent density functional theory and quadratic response theory. Moreover, we determined their spectral properties and fluorescence efficiencies. Fortunately, in this study, we were able to propose an excellent TP probe BC-3 and the corresponding product molecule DCCA-3, which exhibit large TPA cross-sections in the NIR region (3420 GM/988 nm; 316 GM/939 nm) and large Stokes (116 nm; 60 nm) and emission (225 nm) shifts. Therefore, this probe enables the simultaneous NIR and TP imaging of H2O2, which is a unique ability and has never been previously reported. Moreover, we comprehensively investigated the effect of the benzene-fused position in the coumarin backbone on the transition dipole moment and nonradiative decay channels, explaining the fluorescence near-quenching mechanism of benzo[f]coumarin derivative DCCA-4 for the first time.
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Affiliation(s)
- Xue-Li Hao
- Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Liutiao Road 2#, Changchun 130061, China.
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13
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Zhou K, Bai H, Feng L, Dai J, Cui M. Smart D-π-A Type Near-Infrared Aβ Probes: Effects of a Marked π Bridge on Optical and Biological Properties. Anal Chem 2017; 89:9432-9437. [DOI: 10.1021/acs.analchem.7b02246] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Kaixiang Zhou
- Key
Laboratory of Radiopharmaceuticals, Ministry of Education, College
of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Hongcun Bai
- Key
Laboratory of High-Efficiency Utilization of Coal and Green Chemical
Engineering, Ningxia University, Yinchuan, Ningxia 750021, China
| | - Liang Feng
- Key
Laboratory of Radiopharmaceuticals, Ministry of Education, College
of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Jiapei Dai
- Wuhan
Institute for Neuroscience and Neuroengineering, South-Central University for Nationalities, Wuhan 430074, China
| | - Mengchao Cui
- Key
Laboratory of Radiopharmaceuticals, Ministry of Education, College
of Chemistry, Beijing Normal University, Beijing 100875, China
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14
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Alam MM, Beerepoot MTP, Ruud K. Channel interference in multiphoton absorption. J Chem Phys 2017; 146:244116. [DOI: 10.1063/1.4990438] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Md. Mehboob Alam
- Centre for Theoretical and Computational Chemistry, Department of Chemistry, UiT—The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Maarten T. P. Beerepoot
- Centre for Theoretical and Computational Chemistry, Department of Chemistry, UiT—The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Kenneth Ruud
- Centre for Theoretical and Computational Chemistry, Department of Chemistry, UiT—The Arctic University of Norway, N-9037 Tromsø, Norway
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15
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Johansson PK, Koelsch P. Label-free imaging of amyloids using their intrinsic linear and nonlinear optical properties. BIOMEDICAL OPTICS EXPRESS 2017; 8:743-756. [PMID: 28270981 PMCID: PMC5330564 DOI: 10.1364/boe.8.000743] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 12/19/2016] [Accepted: 12/19/2016] [Indexed: 05/11/2023]
Abstract
The optical properties of amyloid fibers are often distinct from those of the source protein in its non-fibrillar form. These differences can be utilized for label-free imaging or characterization of such structures, which is particularly important for understanding amyloid fiber related diseases such as Alzheimer's and Parkinson's disease. We demonstrate that two amyloid forming proteins, insulin and β-lactoglobulin (β-LG), show intrinsic fluorescence with emission spectra that are dependent on the excitation wavelength. Additionally, a new fluorescence peak at about 430 nm emerges for β-LG in its amyloid state. The shift in emission wavelength is related to the red edge excitation shift (REES), whereas the additional fluorescence peak is likely associated with charge delocalization along the fiber backbone. Furthermore, the spherulitic amyloid plaque-like superstructures formed from the respective proteins were imaged label-free with confocal fluorescence, multiphoton excitation fluorescence (MPEF), and second-harmonic generation (SHG) microscopy. The latter two techniques in particular yield images with a high contrast between the amyloid fiber regions and the core of amorphously structured protein. Strong multiphoton absorption (MPA) for the amyloid fibers is a likely contributor to the observed contrast in the MPEF images. The crystalline fibrillar region provides even higher contrast in the SHG images, due to the inherently ordered non-centrosymmetric structure of the fibers together with their non-isotropic arrangement. Finally, we show that MPEF from the insulin spherulites exhibits a spectral dependence on the excitation wavelength. This behavior is consistent with the REES phenomenon, which we hypothesize is the origin of this observation. The presented results suggest that amyloid deposits can be identified and structurally characterized based on their intrinsic optical properties, which is important for probe-less and label-free identification and characterization of amyloid fibers in vitro and in complex biological samples.
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Affiliation(s)
- Patrik K. Johansson
- National ESCA Surface Analysis Center for Biomedical Problems, Department of Bioengineering, University of Washington, 4000 15th Ave NE, Seattle, WA 98195,
USA
| | - Patrick Koelsch
- National ESCA Surface Analysis Center for Biomedical Problems, Department of Bioengineering, University of Washington, 4000 15th Ave NE, Seattle, WA 98195,
USA
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16
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Zhang C, Guo JF, Ren AM, Wang D. A theoretical investigation of the two-photon absorption and fluorescent properties of coumarin-based derivatives for Pd2+ detection. RSC Adv 2017. [DOI: 10.1039/c7ra08832a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Two-photon fluorescent probes that can detect Pd2+ according to the “turn-on” fluorescence signal are reported.
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Affiliation(s)
- Chun Zhang
- Institute of Theoretical Chemistry
- Laboratory of Theoretical and Computational Chemistry
- Jilin University
- Changchun
- China
| | - Jing-Fu Guo
- School of Physics
- Northeast Normal University
- Changchun
- China
| | - Ai-Min Ren
- Institute of Theoretical Chemistry
- Laboratory of Theoretical and Computational Chemistry
- Jilin University
- Changchun
- China
| | - Dan Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
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17
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Zhang C, Wang D, Zhang L, Guo JF, Ren AM. Theoretical investigation and design of two-photon fluorescent probes for visualizing β-galactosidase activity in living cells. RSC Adv 2016. [DOI: 10.1039/c6ra11712k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The two-photon fluorescent probes show dual signal for β-gal bio-imaging.
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Affiliation(s)
- Chun Zhang
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130023
- China
| | - Dan Wang
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130023
- China
| | - Li Zhang
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130023
- China
| | - Jing-Fu Guo
- School of Physics
- Northeast Normal University
- Changchun 130021
- China
| | - Ai-Min Ren
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130023
- China
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18
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Peccati F, Wiśniewska M, Solans-Monfort X, Sodupe M. Computational study on donor–acceptor optical markers for Alzheimer's disease: a game of charge transfer and electron delocalization. Phys Chem Chem Phys 2016; 18:11634-43. [DOI: 10.1039/c5cp07274c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The length of the conjugated double bond chain in DANIR dyes modulates the charge transfer character, non-radiative deactivation pathways and affinity for amyloid-β fibril.
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Affiliation(s)
- Francesca Peccati
- Departament de Química
- Universitat Autònoma de Barcelona
- 08193 – Bellaterra
- Spain
| | - Marta Wiśniewska
- Centre of New Technologies
- University of Warsaw
- 02-097 Warsaw
- Poland
| | | | - Mariona Sodupe
- Departament de Química
- Universitat Autònoma de Barcelona
- 08193 – Bellaterra
- Spain
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19
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List NH, Zaleśny R, Murugan NA, Kongsted J, Bartkowiak W, Ågren H. Relation between Nonlinear Optical Properties of Push-Pull Molecules and Metric of Charge Transfer Excitations. J Chem Theory Comput 2015; 11:4182-8. [PMID: 26575913 DOI: 10.1021/acs.jctc.5b00538] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We establish the relationships between the metric of charge transfer excitation (Δr) for the bright ππ* state and the two-photon absorption probability as well as the first hyperpolarizability for two families of push-pull π-conjugated systems. As previously demonstrated by Guido et al. (J. Chem. Theory Comput. 2013, 9, 3118-3126), Δr is a measure for the average hole-electron distance upon excitation and can be used to discriminate between short- and long-range electronic excitations. We indicate two new benefits from using this metric for the analyses of nonlinear optical properties of push-pull systems. First, the two-photon absorption probability and the first hyperpolarizability are found to be interrelated through Δr; if β ∼ (Δr)(k), then roughly, δ(TPA) ∼ (Δr)(k+1). Second, a simple power relation between Δr and the molecular hyperpolarizabilities of push-pull systems offers the possibility of estimating properties for longer molecular chains without performing calculations of high-order response functions explicitly. We further demonstrate how to link the hyperpolarizabilities with the chain length of the push-pull π-conjugated systems through the metric of charge transfer.
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Affiliation(s)
- Nanna Holmgaard List
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark , Campusvej 55, DK-5230 Odense M, Denmark
| | - Robert Zaleśny
- Department of Physical and Quantum Chemistry, Faculty of Chemistry, Wrocław University of Technology , Wyb. Wyspiańskiego 27, PL-50370 Wrocław, Poland.,Department of Chemistry, Faculty of Natural Sciences, Matej Bel University , Tajovského 40, SK-97400 Banská Bystrica, Slovak Republic
| | - N Arul Murugan
- Division of Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology , SE-10691 Stockholm, Sweden
| | - Jacob Kongsted
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark , Campusvej 55, DK-5230 Odense M, Denmark
| | - Wojciech Bartkowiak
- Department of Physical and Quantum Chemistry, Faculty of Chemistry, Wrocław University of Technology , Wyb. Wyspiańskiego 27, PL-50370 Wrocław, Poland
| | - Hans Ågren
- Division of Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology , SE-10691 Stockholm, Sweden
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20
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Watanabe H, Ono M, Saji H. In vivo fluorescence imaging of β-amyloid plaques with push–pull dimethylaminothiophene derivatives. Chem Commun (Camb) 2015; 51:17124-7. [DOI: 10.1039/c5cc06628j] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
We report a newin vivofluorescent imaging probe, DTM-2, that can detect β-amyloid plaques in the brain.
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Affiliation(s)
- Hiroyuki Watanabe
- Department of Patho-Functional Bioanalysis
- Graduate School of Pharmaceutical Sciences
- Kyoto University
- Sakyo-ku
- Japan
| | - Masahiro Ono
- Department of Patho-Functional Bioanalysis
- Graduate School of Pharmaceutical Sciences
- Kyoto University
- Sakyo-ku
- Japan
| | - Hideo Saji
- Department of Patho-Functional Bioanalysis
- Graduate School of Pharmaceutical Sciences
- Kyoto University
- Sakyo-ku
- Japan
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