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Malakoutikhah M, Mahran R, Gooran N, Masoumi A, Lundell K, Liljeblad A, Guiley K, Dai S, Zheng Q, Zhu L, Shokat KM, Kopra K, Härmä H. Nanomolar Protein Thermal Profiling with Modified Cyanine Dyes. Anal Chem 2023; 95:18344-18351. [PMID: 38060502 PMCID: PMC10733900 DOI: 10.1021/acs.analchem.3c02844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 11/15/2023] [Accepted: 11/17/2023] [Indexed: 12/20/2023]
Abstract
Protein properties and interactions have been widely investigated by using external labels. However, the micromolar sensitivity of the current dyes limits their applicability due to the high material consumption and assay cost. In response to this challenge, we synthesized a series of cyanine5 (Cy5) dye-based quencher molecules to develop an external dye technique to probe proteins at the nanomolar protein level in a high-throughput one-step assay format. Several families of Cy5 dye-based quenchers with ring and/or side-chain modifications were designed and synthesized by introducing organic small molecules or peptides. Our results showed that steric hindrance and electrostatic interactions are more important than hydrophobicity in the interaction between the luminescent negatively charged europium-chelate-labeled peptide (Eu-probe) and the quencher molecules. The presence of substituents on the quencher indolenine rings reduces their quenching property, whereas the increased positive charge on the indolenine side chain improved the interaction between the quenchers and the luminescent compound. The designed quencher structures entirely altered the dynamics of the Eu-probe (protein-probe) for studying protein stability and interactions, as we were able to reduce the quencher concentration 100-fold. Moreover, the new quencher molecules allowed us to conduct the experiments using neutral buffer conditions, known as the peptide-probe assay. These improvements enabled us to apply the method in a one-step format for nanomolar protein-ligand interaction and protein profiling studies instead of the previously developed two-step protocol. These improvements provide a faster and simpler method with lower material consumption.
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Affiliation(s)
| | - Randa Mahran
- Department
of Chemistry, University of Turku, Henrikinkatu 2, 20500 Turku, Finland
| | - Negin Gooran
- Department
of Chemistry, University of Turku, Henrikinkatu 2, 20500 Turku, Finland
| | - Ahmadreza Masoumi
- Department
of Chemistry, University of Turku, Henrikinkatu 2, 20500 Turku, Finland
| | - Katri Lundell
- Laboratory
of Synthetic Drug Chemistry, Institute of Biomedicine, University of Turku, Kiinamyllynkatu 10, FI-20520 Turku, Finland
| | - Arto Liljeblad
- Laboratory
of Synthetic Drug Chemistry, Institute of Biomedicine, University of Turku, Kiinamyllynkatu 10, FI-20520 Turku, Finland
| | - Keelan Guiley
- Department
of Cellular and Molecular Pharmacology and Howard Hughes Medical Institute, University of California, San Francisco, California 94158, United States
- Current
address: Rezo Therapeutics, Inc., San Francisco, California 94158, United States
| | - Shizhong Dai
- Department
of Cellular and Molecular Pharmacology and Howard Hughes Medical Institute, University of California, San Francisco, California 94158, United States
- Current
address: Department of Genetics, Stanford
University, Stanford, California 94305, United States
| | - Qinheng Zheng
- Department
of Cellular and Molecular Pharmacology and Howard Hughes Medical Institute, University of California, San Francisco, California 94158, United States
| | - Lawrence Zhu
- Department
of Cellular and Molecular Pharmacology and Howard Hughes Medical Institute, University of California, San Francisco, California 94158, United States
| | - Kevan M. Shokat
- Department
of Cellular and Molecular Pharmacology and Howard Hughes Medical Institute, University of California, San Francisco, California 94158, United States
| | - Kari Kopra
- Department
of Chemistry, University of Turku, Henrikinkatu 2, 20500 Turku, Finland
| | - Harri Härmä
- Department
of Chemistry, University of Turku, Henrikinkatu 2, 20500 Turku, Finland
- Department
of Cellular and Molecular Pharmacology and Howard Hughes Medical Institute, University of California, San Francisco, California 94158, United States
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Sirén S, Dahlström KM, Puttreddy R, Rissanen K, Salminen TA, Scheinin M, Li XG, Liljeblad A. Candida antarctica Lipase A-Based Enantiorecognition of a Highly Strained 4-Dibenzocyclooctynol (DIBO) Used for PET Imaging. Molecules 2020; 25:molecules25040879. [PMID: 32079253 PMCID: PMC7070869 DOI: 10.3390/molecules25040879] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 02/08/2020] [Accepted: 02/14/2020] [Indexed: 11/24/2022] Open
Abstract
The enantiomers of aromatic 4-dibenzocyclooctynol (DIBO), used for radiolabeling and subsequent conjugation of biomolecules to form radioligands for positron emission tomography (PET), were separated by kinetic resolution using lipase A from Candida antarctica (CAL-A). In optimized conditions, (R)-DIBO [(R)-1, ee 95%] and its acetylated (S)-ester [(S)-2, ee 96%] were isolated. In silico docking results explained the ability of CAL-A to differentiate the enantiomers of DIBO and to accommodate various acyl donors. Anhydrous MgCl2 was used for binding water from the reaction medium and, thus, for obtaining higher conversion by preventing hydrolysis of the product (S)-2 into the starting material. Since the presence of hydrated MgCl2·6H2O also allowed high conversion or effect on enantioselectivity, Mg2+ ion was suspected to interact with the enzyme. Binding site predictions indicated at least two sites of interest; one in the lid domain at the bottom of the acyl binding pocket and another at the interface of the hydrolase and flap domains, just above the active site.
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Affiliation(s)
- Saija Sirén
- Laboratory of Synthetic Drug Chemistry, Institute of Biomedicine, University of Turku, Kiinamyllynkatu 10, FI-20520 Turku, Finland;
- Biochemistry, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6 A, FI-20520 Turku, Finland
| | - Käthe M. Dahlström
- Structural Bioinformatics Laboratory, Biochemistry, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6 A, FI-20520 Turku, Finland; (K.M.D.); (T.A.S.)
| | - Rakesh Puttreddy
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland (K.R.)
| | - Kari Rissanen
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland (K.R.)
| | - Tiina A. Salminen
- Structural Bioinformatics Laboratory, Biochemistry, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6 A, FI-20520 Turku, Finland; (K.M.D.); (T.A.S.)
| | - Mika Scheinin
- Institute of Biomedicine, University of Turku, and Unit of Clinical Pharmacology, Turku University Hospital, FI-20521 Turku, Finland;
| | - Xiang-Guo Li
- Turku PET Centre, Åbo Akademi University and University of Turku, Kiinamyllynkatu 4-8, FI-20521 Turku, Finland
- Turku PET Centre, Turku University Hospital, Kiinamyllynkatu 4-8, FI-20521 Turku, Finland
- Correspondence: (X.-G.L.); (A.L.)
| | - Arto Liljeblad
- Laboratory of Synthetic Drug Chemistry, Institute of Biomedicine, University of Turku, Kiinamyllynkatu 10, FI-20520 Turku, Finland;
- Correspondence: (X.-G.L.); (A.L.)
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Mäenpää H, Kanerva LT, Liljeblad A. Acylation of β-Amino Esters and Hydrolysis of β-Amido Esters: Candida antarctica
Lipase A as a Chemoselective Deprotection Catalyst. ChemCatChem 2016. [DOI: 10.1002/cctc.201501381] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Harri Mäenpää
- Institute of Biomedicine/Department of Pharmacology; Drug Development and Therapeutics; University of Turku; FI-20014 Finland
| | - Liisa T. Kanerva
- Institute of Biomedicine/Department of Pharmacology; Drug Development and Therapeutics; University of Turku; FI-20014 Finland
| | - Arto Liljeblad
- Institute of Biomedicine/Department of Pharmacology; Drug Development and Therapeutics; University of Turku; FI-20014 Finland
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Koulu M, Örmä S, Liljeblad A, Niemelä P. Artemisaiae as medicinal and herbal medicinal plants from ancient times to the present day. Duodecim 2016; 132:1763-1770. [PMID: 29188968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The 2015 Nobel Prize in Physiology and Medicine was awarded to Chinese Youyou Tu for her work on an antimalarial drug that she isolated from sweet wormwood (Artemisia annua L) and absinthe (Artemisia absinthium L) belonging to the genus of Artemisia. In this article we deal with the use of Artemisiae as medicinal plants through the ages, and several pharmacologically active compounds can be obtained from species of the genus Artemisia. We will particularly focus on two medicinally interesting species of Artemisiae - sweet wormwood and absinthe - as well as two pharmacologically significant compounds found in them, artemisin and thujone.
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Uusi-Oukari M, Vähätalo L, Liljeblad A. Modifications of diflunisal and meclofenamate carboxyl groups affect their allosteric effects on GABAA receptor ligand binding. Neurochem Res 2014; 39:1183-91. [PMID: 24925262 DOI: 10.1007/s11064-014-1351-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 06/24/2013] [Accepted: 06/28/2013] [Indexed: 11/25/2022]
Abstract
Gamma-aminobutyric acid type A receptors (GABAAR) are allosterically modulated by the nonsteroidal anti-inflammatory drugs diflunisal and fenamates. The carboxyl group of these compounds is charged at physiological pH and therefore penetration of the compounds into the brain is low. In the present study we have transformed the carboxyl group of diflunisal and meclofenamate into non-ionizable functional groups and analyzed the effects of the modifications on stimulation of [(3)H]muscimol binding and on potentiation of γ-aminobutyric acid-induced displacement of 4'-ethenyl-4-n-[2,3-(3)H]propylbicycloorthobenzoate. N-Butylamide derivative of diflunisal modulated radioligand binding with equal or higher potency than the parent compound, while diflunisalamide showed reduced allosteric effect as compared to diflunisal. Amide derivative of meclofenamate equally affected radioligand binding parameters, while both diflunisal and meclofenamate methyl esters were less active than the parent compounds. Our study clearly demonstrates that an intact carboxyl group in diflunisal and meclofenamate is not indispensable for their positive GABAAR modulation. Further derivatization of the compound might yield compounds with higher selectivity for GABAARs that could be utilized in drug development.
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Affiliation(s)
- Mikko Uusi-Oukari
- Department of Pharmacology, Drug Development and Therapeutics, University of Turku, Itainen Pitkakatu 4, 20014, Turku, Finland,
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Brem J, Bencze LC, Liljeblad A, Turcu MC, Paizs C, Irimie FD, Kanerva LT. Chemoenzymatic Preparation of 1-Heteroarylethanamines of Low Solubility. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200330] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Hietanen A, Lundell K, Kanerva LT, Liljeblad A. Advances in the kinetic and dynamic kinetic resolution of piperazine-2-carboxylic acid derivatives with Candida antarctica lipase A; structural requirements for enantioselective N-acylation. ARKIVOC 2011. [DOI: 10.3998/ark.5550190.0013.507] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Brem J, Liljeblad A, Paizs C, Toşa MI, Irimie FD, Kanerva LT. Lipases A and B from Candida antarctica in the enantioselective acylation of ethyl 3-heteroaryl-3-hydroxypropanoates: aspects on the preparation and enantiopreference. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.01.027] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Långvik O, Saloranta T, Kirilin A, Liljeblad A, Mäki-Arvela P, Kanerva LT, Murzin DY, Leino R. Dynamic Kinetic Resolution of rac-2-Hydroxy-1-indanone by using a Heterogeneous Ru(OH)3/Al2O3 Racemization Catalyst and Lipase. ChemCatChem 2010. [DOI: 10.1002/cctc.201000161] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Liljeblad A, Kallio P, Vainio M, Niemi J, Kanerva LT. Formation and hydrolysis of amide bonds by lipase A from Candida antarctica; exceptional features. Org Biomol Chem 2010; 8:886-95. [PMID: 20135048 DOI: 10.1039/b920939p] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Arto Liljeblad
- Institute of Biomedicine, Pharmacology, Drug Development and Therapeutics/Laboratory of Synthetic Drug Chemistry and Department of Chemistry, University of Turku, Lemminkäisenkatu 5 C, FIN-20520, Turku, Finland.
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Paál TA, Forró E, Fülöp F, Liljeblad A, Kanerva LT. Lipase-catalyzed kinetic resolution of 1,2,3,4-tetrahydroisoquinoline-1-acetic acid esters. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.tetasy.2008.11.032] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Paál TA, Liljeblad A, Kanerva LT, Forró E, Fülöp F. Directed (R)- or (S)-Selective Dynamic Kinetic Enzymatic Hydrolysis of 1,2,3,4-Tetrahydroisoquinoline-1-carboxylic Esters. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800789] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Liljeblad A, Kavenius HM, Tähtinen P, Kanerva LT. Chemoenzymatic approach to enantiopure piperidine-based β-amino esters in organic solvents. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.tetasy.2007.01.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Gyarmati Z, Liljeblad A, Argay G, Kálmán A, Bernáth G, Kanerva L. Chemoenzymatic Preparation of Enantiopure Homoadamantylβ-Amino Acid andβ-Lactam Derivatives. Adv Synth Catal 2004. [DOI: 10.1002/adsc.200303205] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Liljeblad A, Kiviniemi A, Kanerva LT. Aldehyde-based racemization in the dynamic kinetic resolution of N-heterocyclic α-amino esters using Candida antarctica lipase A. Tetrahedron 2004. [DOI: 10.1016/j.tet.2003.10.103] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Solymár M, Liljeblad A, Lázár L, Fülöp F, Kanerva LT. Lipase-catalysed kinetic resolution in organic solvents: an approach to enantiopure α-methyl-β-alanine esters. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0957-4166(02)00478-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Gedey S, Liljeblad A, Lázár L, Fülöp F, Kanerva LT. Structural effects on chemo- and enantioselectivity of Candida antarctica lipase B - Resolution of β-amino esters. CAN J CHEM 2002. [DOI: 10.1139/v02-015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The Candida antarctica lipase B-catalyzed reactions of five β-amino esters with neat butyl butanoate and with 2,2,2-trifluoroethyl butanoate in diisopropyl ether were studied, as were the reactions of the same β-amino esters and their N-butanamides with neat butanol. The possibility for sequential resolution, where the amino and ester functions of the substrate both react with an achiral butanoate, became less likely with increasing size of the substrate from ethyl 3-aminobutanoate (1a) to pentanoate (1b) or larger. On the other hand, the alcoholyses of N-acylated β-amino esters successfully proceeded in butanol with E > 100. Gram-scale resolution of the N-butanoylated 1a was performed to demonstrate the usefulness of the method. Key words: lipase, interesterification, acylation, alcoholysis, resolution, β-amino esters.
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Liljeblad A, Lindborg J, Kanerva A, Katajisto J, Kanerva LT. Enantioselective lipase-catalyzed reactions of methyl pipecolinate: transesterification and N-acylation. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)00288-5] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Virsu P, Liljeblad A, Kanerva A, Kanerva LT. Preparation of the enantiomers of 1-phenylethan-1,2-diol. Regio- and enantioselectivity of acylase I and Candida antarctica lipases A and B. ACTA ACUST UNITED AC 2001. [DOI: 10.1016/s0957-4166(01)00428-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Liljeblad A, Aksela R, Kanerva LT. Use of enantio-, chemo- and regioselectivity of acylase I. Resolution of polycarboxylic acid esters. ACTA ACUST UNITED AC 2001. [DOI: 10.1016/s0957-4166(01)00362-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Liljeblad A, Lindborg J, Kanerva LT. Acylase I in the alcoholysis of α-substituted dicarboxylic acid esters and derivatives: enantio- and regioselectivity. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s0957-4166(00)00346-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Liljeblad A, Kanerva LT. Enzymatic methods for the preparation of enantiopure malic and aspartic acid derivatives in organic solvents. ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s0957-4166(99)00476-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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