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Gonçalves RCR, Belmonte-Reche E, Pina J, Costa da Silva M, Pinto SCS, Gallo J, Costa SPG, Raposo MMM. Bioimaging of Lysosomes with a BODIPY pH-Dependent Fluorescent Probe. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27228065. [PMID: 36432168 PMCID: PMC9696654 DOI: 10.3390/molecules27228065] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/16/2022] [Accepted: 11/17/2022] [Indexed: 11/22/2022]
Abstract
Fluorescence-based probes represent a powerful tool for noninvasive imaging of living systems in real time and with a high temporal and spatial resolution. Amongst several known fluorophores, 3-difluoroborodipyrromethene (BODIPY) derivatives have become a cornerstone for innovative fluorescent labelling applications, mainly due to their advantageous features including their facile synthesis, structural versatility and exceptional photophysical properties. In this context, we report a BODIPY-based fluorescent probe for imaging of lysosomes in living cells. The BODIPY derivative displayed a remarkable fluorescence enhancement at low pH values with a pKa* of 3.1. In vitro studies by confocal microscopy in HeLa cells demonstrated that the compound was able to permeate cell membrane and selectively label lysosome whilst remaining innocuous to the cell culture at the maximum concentration tested. Herein, the BODIPY derivative holds the promise of investigating lysosomal dynamics and function in living cells through fluorescence imaging.
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Affiliation(s)
- Raquel C. R. Gonçalves
- Centre of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- Advanced (Magnetic) Theranostic Nanostructures Lab, International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal
| | - Efres Belmonte-Reche
- Advanced (Magnetic) Theranostic Nanostructures Lab, International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal
| | - João Pina
- Coimbra Chemistry Centre-Institute of Molecular Sciences, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Milene Costa da Silva
- Advanced (Magnetic) Theranostic Nanostructures Lab, International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal
| | - Sónia C. S. Pinto
- Centre of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Juan Gallo
- Advanced (Magnetic) Theranostic Nanostructures Lab, International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal
| | - Susana P. G. Costa
- Centre of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - M. Manuela M. Raposo
- Centre of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- Correspondence:
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2
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Dinç E, Ertekin ZC. Two Different Strategies Based on Three‐Way Analysis Models of UV Spectroscopic and Spectrochromatographic Measurements to Quantify the Acidity Constant of Acetylsalicylic Acid. ChemistrySelect 2022. [DOI: 10.1002/slct.202104345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Erdal Dinç
- Department of Analytical Chemistry Ankara University Faculty of Pharmacy 06560 Yenimahalle Ankara Turkey
| | - Zehra Ceren Ertekin
- Department of Analytical Chemistry Ankara University Faculty of Pharmacy 06560 Yenimahalle Ankara Turkey
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3
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Hancu G, Toncean A, Podar D, Sarkany A, Drăguț C, Barabás E. Simultaneous determination of anthelmintic drugs by capillary electrophoresis using cyclodextrins as buffer additives. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-0505-5] [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] Open
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4
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Deblonde GJP, Delaunay N, Lee D, Chagnes A, Cote G, Gareil P. First investigation of polyoxoniobate and polyoxotantalate aqueous speciation by capillary zone electrophoresis. RSC Adv 2015. [DOI: 10.1039/c5ra11521c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aqueous solutions of hexaniobate (HxNb6O19x−8, 0 ≤ x ≤ 3) and hexatantalate ions (HxTa6O19x−8, 0 ≤ x ≤ 3) have been probed by capillary zone electrophoresis (CE) for the first time.
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Affiliation(s)
- Gauthier J.-P. Deblonde
- PSL Research University
- Chimie ParisTech – CNRS
- Institut de Recherche de Chimie Paris
- 75005 Paris
- France
| | - Nathalie Delaunay
- PSL Research University
- ESPCI ParisTech
- Laboratory of Analytical and Bioanalytical Sciences and Miniaturization
- UMR CBI 8231
- 75231 Paris Cedex 05
| | - Dahye Lee
- PSL Research University
- ESPCI ParisTech
- Laboratory of Analytical and Bioanalytical Sciences and Miniaturization
- UMR CBI 8231
- 75231 Paris Cedex 05
| | - Alexandre Chagnes
- PSL Research University
- Chimie ParisTech – CNRS
- Institut de Recherche de Chimie Paris
- 75005 Paris
- France
| | - Gérard Cote
- PSL Research University
- Chimie ParisTech – CNRS
- Institut de Recherche de Chimie Paris
- 75005 Paris
- France
| | - Pierre Gareil
- PSL Research University
- ESPCI ParisTech
- Laboratory of Analytical and Bioanalytical Sciences and Miniaturization
- UMR CBI 8231
- 75231 Paris Cedex 05
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5
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Nowak P, Woźniakiewicz M, Kościelniak P. Application of capillary electrophoresis in determination of acid dissociation constant values. J Chromatogr A 2014; 1377:1-12. [PMID: 25543298 DOI: 10.1016/j.chroma.2014.12.032] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 12/05/2014] [Accepted: 12/09/2014] [Indexed: 11/20/2022]
Abstract
The chemical groups undergoing protonation or deprotonation in solution are described by the acid dissociation constant value, the key parameter for physicochemical characterization of biologically- and pharmacologically-important compounds. Capillary electrophoresis (CE) proved to be suitable technique for its determination: it enables automated and accurate measurements even for minute amount of sample, does not require the information about concentration, and handle both the impure and complex samples. In this review, a number of contributions reporting on the application of CE in pKa prediction has been summarized and critically discussed. The reader will find herein the brief introduction of theory, summary of all works published in the last decade, considerations on the most important innovations and achievements, and the discussion of pKa-related issues as e.g. the role of pKa-shifts in the chiral separation mechanism or the elucidation of migration order reversals observed during CE-mediated separations.
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Affiliation(s)
- Paweł Nowak
- Jagiellonian University in Kraków, Faculty of Chemistry, Department of Analytical Chemistry, Kraków, Poland
| | - Michał Woźniakiewicz
- Jagiellonian University in Kraków, Faculty of Chemistry, Department of Analytical Chemistry, Kraków, Poland.
| | - Paweł Kościelniak
- Jagiellonian University in Kraków, Faculty of Chemistry, Department of Analytical Chemistry, Kraków, Poland
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6
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Cabot JM, Fuguet E, Rosés M. Internal standard capillary electrophoresis as a high-throughput method for pKa determination in drug discovery and development. ACS COMBINATORIAL SCIENCE 2014; 16:518-25. [PMID: 25170674 DOI: 10.1021/co500059p] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel high-throughput method for determining acidity constants (pKa) by capillary electrophoresis (CE) is developed. The method, based on the use of an internal standard (IS-CE), is implemented as a routine method for accurate experimental pKa determination of drugs undergoing physicochemical measurements in drug discovery laboratories. Just two electropherograms at 2 different pH values are needed to calculate an acidity constant. Several ISs can be used in the same buffer and run to enhance precision. With 3 ISs, for example, the pKa of the test compound (TC) can be obtained in triplicate in less than 3 min of electrophoresis. It has been demonstrated that the IS-CE method eliminates some systematic errors, maintaining, or even increasing the precision of the results compared with other methods. Furthermore, pH buffer instability during electrophoretic runs is not a problem in the IS-CE method. It is also proved that after 16 h of electroseparation using the same buffer vial, pH may change by around one unit; but the pKa calculated by the IS-CE method remains constant. Thus, IS-CE is a powerful high-throughput method for pKa determination in drug discovery and development.
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Affiliation(s)
- Joan M. Cabot
- Departament de Química
Analítica and Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès 1-11, E-08028 Barcelona, Spain
| | - Elisabet Fuguet
- Departament de Química
Analítica and Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès 1-11, E-08028 Barcelona, Spain
| | - Martí Rosés
- Departament de Química
Analítica and Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès 1-11, E-08028 Barcelona, Spain
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7
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Li S, Xie JQ, Xiang QX, Quan XJ, Xu JQ. Synthesis, Characterisation and Molecular Recognition of Novel Zn(II) Macrocyclic Complexes with Imidazole or Benzimidazole Pendants. JOURNAL OF CHEMICAL RESEARCH 2014. [DOI: 10.3184/174751914x13894363997018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Macrocyclic polyamine Zn(II) mononuclear and dinuclear complexes bearing imidazole or benzimidazole pendants have been synthesised and their binding constants determined by UV-Vis spectrometric titration. The binding ability of the complexes is stronger than that of the control materials with cytosine (Cyt). The recognition abilities of the dinuclear complexes for Cyt are much higher than that for the other bases or nucleosides (such as uracil, 5-hydroxymeyhyl uracil, adenosine, thymidine and uridine); the binding constants of the dinuclear complexes with m-xylyl or pyridyl as linkers are 25,360 and 22,550 dm3 mol−1 respectively.
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Affiliation(s)
- Shuo Li
- College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, P.R. China
| | - Jia-qing Xie
- College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, P.R. China
| | - Qing-xiang Xiang
- Department of Environment and Life Science, Leshan Teachers College, Leshan, Sichuan, 614000, P.R. China
| | - Xue-jun Quan
- College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, P.R. China
| | - Jun-qiang Xu
- College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, P.R. China
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Wang JL, Xu XJ, Chen DY. Determination of pKa values of a triptolide derivative and its impurities by pressure-assisted capillary electrophoresis. J Pharm Biomed Anal 2014; 88:22-6. [DOI: 10.1016/j.jpba.2013.08.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Revised: 08/06/2013] [Accepted: 08/08/2013] [Indexed: 11/25/2022]
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9
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Šolínová V, Kašička V. Determination of acidity constants and ionic mobilities of polyprotic peptide hormones by CZE. Electrophoresis 2013; 34:2655-65. [PMID: 23775856 DOI: 10.1002/elps.201300119] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Revised: 04/23/2013] [Accepted: 04/23/2013] [Indexed: 12/16/2022]
Abstract
CZE has been applied to determination of thermodynamic acidity constants (pKa ) of ionogenic groups and actual ionic mobilities of polyprotic peptides-synthetic human and salmon gonadotropin-releasing hormones and their derivatives and fragments. First, the mixed acidity constants, pKa,imix, of ionogenic groups, and actual ionic mobilities, mi , of gonadotropin-releasing hormone peptides were determined by nonlinear regression analysis of pH dependence of their effective electrophoretic mobilities. The effective mobilities were measured by CZE in a series of BGEs within a broad pH range (1.80-12.10), at constant ionic strength (25 mM) and reference temperature (25°C). Second, the pKa,imix values were recalculated to thermodynamic pKa s using the Debye-Hückel theory. Thermodynamic pKa of carboxyl groups was estimated to be in the range of 2.5-3.3 for C-terminal amino acids of the above peptides, and 5.2 for glutamic acid in the middle of peptide chain; pKa of imidazolyl group of histidine residues was in the range of 5.7-6.8, pKa of N-terminal amino group of the peptide with free N-terminus was equal to 6.2, pKa of phenol group of tyrosine residues was in the range of 9.8-10.8, and pKa of guanidinyl group or arginine residues reached values 11.1-11.3, depending on the position of the residues in the peptide and on the amino acid sequence of the peptide. Absolute values of actual ionic mobilities of peptides with charge number ±2 were in the range (14.6-18.6) × 10(-9) m(2) V(-1) s(-1) , and ionic mobilities of peptides with charge number ±1 reached values (6.5-12.9) × 10(-9) m(2) V(-1) s(-1) .
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Affiliation(s)
- Veronika Šolínová
- Institute of Organic Chemistry and Biochemistry, v.v.i., Academy of Sciences of the Czech Republic, Prague, Czech Republic
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Ren H, Wang L, Wang X, Liu X, Jiang S. Measurement of acid dissociation constants and ionic mobilities of 3-nitro-tyrosine and 3-chloro-tyrosine by capillary zone electrophoresis. J Pharm Biomed Anal 2013; 77:83-7. [DOI: 10.1016/j.jpba.2013.01.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 01/07/2013] [Accepted: 01/07/2013] [Indexed: 10/27/2022]
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11
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Mentese E, Islamoglu F, Bal E, Kahveci B. Microwave assisted synthesize of new some benzimidazole derivatives and determination of protonation constant of these compounds in non-aqueous media. ACTA ACUST UNITED AC 2013. [DOI: 10.5155/eurjchem.4.1.25-28.729] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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