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Aztatzi-Mendoza MA, Porras-Núñez EL, Rivas-Galindo VM, Carranza-Rosales P, Carranza-Torres IE, García-Vielma C, Hernández Ahuactzi IF, López-Cortina S, López I, Hernández-Fernández E. Green synthesis of ethyl cinnamates under microwave irradiation: photophysical properties, cytotoxicity, and cell bioimaging. RSC Adv 2024; 14:2391-2401. [PMID: 38213976 PMCID: PMC10783162 DOI: 10.1039/d3ra06443c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 12/22/2023] [Indexed: 01/13/2024] Open
Abstract
A simple and green method for the synthesis of six ethyl cinnamates was performed via Horner-Wadsworth-Emmons reaction under microwave irradiation. The photoluminescent properties of all compounds in ethyl acetate solutions were evaluated demonstrating that all compounds exhibit fluorescence. Five compounds exhibited blue emissions in the 369-442 nm range, and another compound exhibited blue-green emission at 504 nm. This last compound showed the largest Stokes shift (134 nm), and the highest quantum yield (17.8%). Two compounds showed extinction coefficient values (ε) higher than 30 000 M-1 cm-1, which are appropriate for cell bioimaging applications. In this sense, cytotoxicity assays were performed using Vero cells at different concentrations; the results showed that these compounds were not cytotoxic at the highest concentration tested (20 μg mL-1). Finally, the analysis by fluorescence microscopy for localization and cellular staining using Vero cells demonstrated that the compounds stained the cytoplasm and the nuclei in a selective way.
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Affiliation(s)
- Miguel Angel Aztatzi-Mendoza
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Químicas Pedro de Alba s/n, Ciudad Universitaria 66450 San Nicolás de los Garza Nuevo León Mexico +52-81-83294000 +52-81-83294000 ext. 6293
| | - Edgar Leonel Porras-Núñez
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Químicas Pedro de Alba s/n, Ciudad Universitaria 66450 San Nicolás de los Garza Nuevo León Mexico +52-81-83294000 +52-81-83294000 ext. 6293
| | - Verónica M Rivas-Galindo
- Universidad Autónoma de Nuevo León, UANL, Facultad de Medicina Fco. I. Madero s/n, Mitras Centro 64460 Monterrey Nuevo León Mexico
| | - Pilar Carranza-Rosales
- Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social Monterrey 64720 Nuevo León Mexico
| | - Irma Edith Carranza-Torres
- Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social Monterrey 64720 Nuevo León Mexico
| | - Catalina García-Vielma
- Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social Monterrey 64720 Nuevo León Mexico
| | - Iran F Hernández Ahuactzi
- Centro Universitario de Tonalá, Universidad de Guadalajara Av. Nuevo Periférico 555, Ejido San José Tatepozco Tonalá 45425 Jalisco Mexico
| | - Susana López-Cortina
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Químicas Pedro de Alba s/n, Ciudad Universitaria 66450 San Nicolás de los Garza Nuevo León Mexico +52-81-83294000 +52-81-83294000 ext. 6293
| | - Israel López
- Universidad Autónoma de Nuevo León (UANL), Facultad de Ciencias Químicas, Centro de Investigación en Biotecnología y Nanotecnología, Laboratorio de Nanociencias y Nanotecnología Autopista al Aeropuerto Internacional Mariano Escobedo Km. 10, Parque de Investigación e Innovación Tecnológica 66629 Apodaca Nuevo León Mexico +52-81-83294000 +52-81-83294000 ext. 4202
| | - Eugenio Hernández-Fernández
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Químicas Pedro de Alba s/n, Ciudad Universitaria 66450 San Nicolás de los Garza Nuevo León Mexico +52-81-83294000 +52-81-83294000 ext. 6293
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Höing A, Kirupakaran A, Beuck C, Pörschke M, Niemeyer FC, Seiler T, Hartmann L, Bayer P, Schrader T, Knauer SK. Recognition of a Flexible Protein Loop in Taspase 1 by Multivalent Supramolecular Tweezers. Biomacromolecules 2022; 23:4504-4518. [PMID: 36200481 DOI: 10.1021/acs.biomac.2c00652] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Many natural proteins contain flexible loops utilizing well-defined complementary surface regions of their interacting partners and usually undergo major structural rearrangements to allow perfect binding. The molecular recognition of such flexible structures is still highly challenging due to the inherent conformational dynamics. Notably, protein-protein interactions are on the other hand characterized by a multivalent display of complementary binding partners to enhance molecular affinity and specificity. Imitating this natural concept, we here report the rational design of advanced multivalent supramolecular tweezers that allow addressing two lysine and arginine clusters on a flexible protein surface loop. The protease Taspase 1, which is involved in cancer development, carries a basic bipartite nuclear localization signal (NLS) and thus interacts with Importin α, a prerequisite for proteolytic activation. Newly established synthesis routes enabled us to covalently fuse several tweezer molecules into multivalent NLS ligands. The resulting bi- up to pentavalent constructs were then systematically compared in comprehensive biochemical assays. In this series, the stepwise increase in valency was robustly reflected by the ligands' gradually enhanced potency to disrupt the interaction of Taspase 1 with Importin α, correlated with both higher binding affinity and inhibition of proteolytic activity.
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Affiliation(s)
- Alexander Höing
- Molecular Biology II, Center of Medical Biotechnology (ZMB), University of Duisburg-Essen, Universitätsstrasse 5, 45141 Essen, Germany
| | - Abbna Kirupakaran
- Institute of Organic Chemistry I, University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany
| | - Christine Beuck
- Structural and Medicinal Biochemistry, Center of Medical Biotechnology (ZMB), University of Duisburg-Essen, Universitätsstrasse 5, 45141 Essen, Germany
| | - Marius Pörschke
- Structural and Medicinal Biochemistry, Center of Medical Biotechnology (ZMB), University of Duisburg-Essen, Universitätsstrasse 5, 45141 Essen, Germany
| | - Felix C Niemeyer
- Institute of Organic Chemistry I, University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany
| | - Theresa Seiler
- Organic Chemistry and Macromolecular Chemistry, Heinrich Heine University Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
| | - Laura Hartmann
- Organic Chemistry and Macromolecular Chemistry, Heinrich Heine University Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
| | - Peter Bayer
- Structural and Medicinal Biochemistry, Center of Medical Biotechnology (ZMB), University of Duisburg-Essen, Universitätsstrasse 5, 45141 Essen, Germany
| | - Thomas Schrader
- Institute of Organic Chemistry I, University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany
| | - Shirley K Knauer
- Molecular Biology II, Center of Medical Biotechnology (ZMB), University of Duisburg-Essen, Universitätsstrasse 5, 45141 Essen, Germany
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Fluorescence quantum yields and lifetimes of annatto aqueous solutions dependent on hydrogen potential: Applications in adulterated milk. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY 2021. [DOI: 10.1016/j.jpap.2021.100080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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Muniyasamy H, Chinnadurai C, Nelson M, Veeramanoharan A, Sepperumal M, Ayyanar S. Synthesis of C 3-Symmetric Triazine-Based Derivatives: Study of their AIEE, Mechanochromic Behaviors, and Detection of Picric Acid and Uric Acid in Aqueous Medium. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c00827] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Harikrishnan Muniyasamy
- Supramolecular and Organometallic Chemistry Laboratory, Department of Inorganic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, Tamilnadu 625 021, India
| | - Chithiraikumar Chinnadurai
- Supramolecular and Organometallic Chemistry Laboratory, Department of Inorganic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, Tamilnadu 625 021, India
| | - Malini Nelson
- Supramolecular and Organometallic Chemistry Laboratory, Department of Inorganic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, Tamilnadu 625 021, India
| | - Ashokkumar Veeramanoharan
- Supramolecular and Organometallic Chemistry Laboratory, Department of Inorganic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, Tamilnadu 625 021, India
| | - Murugesan Sepperumal
- Supramolecular and Organometallic Chemistry Laboratory, Department of Inorganic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, Tamilnadu 625 021, India
| | - Siva Ayyanar
- Supramolecular and Organometallic Chemistry Laboratory, Department of Inorganic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, Tamilnadu 625 021, India
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De Lima SR, Felisbino DG, Lima MRS, Chang R, Martins MM, Goulart LR, Andrade AA, Messias DN, Dos Santos RR, Juliatti FC, Pilla V. Fluorescence quantum yield of natural dye extracted from Tradescantia pallida purpurea as a function of the seasons: Preliminary bioapplication as a fungicide probe for necrotrophic fungi. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2019; 200:111631. [PMID: 31630045 DOI: 10.1016/j.jphotobiol.2019.111631] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 09/07/2019] [Accepted: 09/12/2019] [Indexed: 12/21/2022]
Abstract
In this work, over the course of four seasons (12 months), we have monitored the fluorescence quantum efficiency (η) from two sets (S1 and S2) of fresh natural dye extracts from the leaves of Tradescantia pallida purpurea. The natural dye was extracted in aqueous solutions from leaves collected from regions with a predominance of shade (S1) and sun (S2) during the day. The thermo-optical parameter fractional thermal load (φ) was measured using conical diffraction (CD) patterns caused by thermally driven self-phase modulation, for η determination in both sets of solutions. Fluorescence measurements corroborate the CD results, and the η values are, on average, slightly higher (~ 11%) in the summer than in the other seasons for both sets of samples (S1 and S2). In addition, the experimental results are presented using natural dye extracted from Tradescantia pallida purpurea as a fungicide probe in Fusarium solani, Sclerotinia sclerotiorum, and Colletotrichum gloeosporioides fungi. The promising fungicide results obtained for the aqueous natural dye extract were compared with those obtained for other natural dyes and fungi. The fungi tested are of the necrotrophic group and constitute important pathosystems in Brazil, causing diseases in several crops that synthetic fungicides often cannot control or do so with low efficiency.
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Affiliation(s)
- Sthanley R De Lima
- Instituto de Física, Universidade Federal de Uberlândia -UFU, Av. João Naves de Ávila 2121, CEP 38.400-902 Uberlândia, MG, Brazil
| | - Douglas G Felisbino
- Instituto de Física, Universidade Federal de Uberlândia -UFU, Av. João Naves de Ávila 2121, CEP 38.400-902 Uberlândia, MG, Brazil
| | - Manuela R S Lima
- Instituto de Física, Universidade Federal de Uberlândia -UFU, Av. João Naves de Ávila 2121, CEP 38.400-902 Uberlândia, MG, Brazil
| | - Roberto Chang
- Instituto de Química, Universidade Federal de Uberlândia -UFU, Av. João Naves de Ávila 2121, CEP 38.400-902 Uberlândia, MG, Brazil
| | - Mário M Martins
- Instituto de Biotecnologia, Universidade Federal de Uberlândia -UFU, Av. Amazonas s/n- Bloco 2E, CEP 38.405-320 Uberlândia, MG, Brazil
| | - Luiz Ricardo Goulart
- Instituto de Biotecnologia, Universidade Federal de Uberlândia -UFU, Av. Amazonas s/n- Bloco 2E, CEP 38.405-320 Uberlândia, MG, Brazil.
| | - Acácio A Andrade
- Instituto de Física, Universidade Federal de Uberlândia -UFU, Av. João Naves de Ávila 2121, CEP 38.400-902 Uberlândia, MG, Brazil
| | - Djalmir N Messias
- Instituto de Física, Universidade Federal de Uberlândia -UFU, Av. João Naves de Ávila 2121, CEP 38.400-902 Uberlândia, MG, Brazil
| | - Roberto R Dos Santos
- Instituto de Ciências Agrárias, Universidade Federal de Uberlândia -UFU, Av. Amazonas s/n- Bloco 2E, CEP 38.400-902 Uberlândia, MG, Brazil
| | - Fernando C Juliatti
- Instituto de Ciências Agrárias, Universidade Federal de Uberlândia -UFU, Av. Amazonas s/n- Bloco 2E, CEP 38.400-902 Uberlândia, MG, Brazil
| | - Viviane Pilla
- Instituto de Física, Universidade Federal de Uberlândia -UFU, Av. João Naves de Ávila 2121, CEP 38.400-902 Uberlândia, MG, Brazil.
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Mchedlov-Petrossyan NO, Cheipesh TA, Shekhovtsov SV, Ushakova EV, Roshal AD, Omelchenko IV. Aminofluoresceins Versus Fluorescein: Ascertained New Unusual Features of Tautomerism and Dissociation of Hydroxyxanthene Dyes in Solution. J Phys Chem A 2019; 123:8845-8859. [PMID: 31539249 DOI: 10.1021/acs.jpca.9b05810] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Within the course of this spectroscopic research, we revealed novel features of the protolytic behavior, which extend the knowledge of the chemistry of xanthene dyes and rationalize the utilization of these compounds. In addition to the well-known tautomerism of the molecular form, H2R, of fluorescein dyes, new aspects of tautomeric transformation of anions are disclosed. First, for the dyes bearing the substituents in the phthalic acid residue, 4'- and 5'-aminofluoresceins and 4'-fluorescein isothiocyanate, the monoanion HR- exists in non-hydrogen-bond donor solvents not only as a tautomer with the ionized carboxylic and nonionized OH group but also as a "phenolate" ion with a nonionized COOH group. Such state of HR- ions is typical for dyes bearing halogen atoms or NO2 groups in the xanthene moiety but was not observed until now in the case of substitution in the phthalic residue. Second, the possibility of the existence of the HR- species in DMSO in the form of colorless lactone is deduced for the 5'-aminofluorescein using the visible and infrared spectra. This results in a dramatic difference in medium effects. For instance, whereas for fluorescein in DMSO, the inversion of the stepwise ionization constants takes place and the Ka1/Ka2 value equals 0.08, the same ratio for 5'-aminofluorescein is as high as ∼800. In addition, the pKa values of sulfonefluorescein, erythrosin, methyl ether of fluorescein, and phenol red were obtained to verify the acidity scale in DMSO and to support the detailed scheme of protolytic equilibria of fluorescein dyes.
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Affiliation(s)
| | - Tatyana A Cheipesh
- Department of Physical Chemistry , V. N. Karazin Kharkov National University , Kharkov 61022 , Ukraine
| | - Sergey V Shekhovtsov
- Department of Physical Chemistry , V. N. Karazin Kharkov National University , Kharkov 61022 , Ukraine
| | - Elena V Ushakova
- Department of Physical Chemistry , V. N. Karazin Kharkov National University , Kharkov 61022 , Ukraine
| | - Alexander D Roshal
- Department of Physical Chemistry , V. N. Karazin Kharkov National University , Kharkov 61022 , Ukraine
| | - Iryna V Omelchenko
- Institute for Single Crystals (SSI) , 60 Nauka Avenue , Kharkov 61001 , Ukraine
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