1
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Li H, Wang J, Jiao L, Hao E. BODIPY-based photocages: rational design and their biomedical application. Chem Commun (Camb) 2024; 60:5770-5789. [PMID: 38752310 DOI: 10.1039/d4cc01412j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
Photocages, also known as photoactivated protective groups (PPGs), have been utilized to achieve controlled release of target molecules in a non-invasive and spatiotemporal manner. In the past decade, BODIPY fluorophores, a well-established class of fluorescent dyes, have emerged as a novel type of photoactivated protective group capable of efficiently releasing cargo species upon irradiation. This is due to their exceptional properties, including high molar absorption coefficients, resistance to photochemical and thermal degradation, multiple modification sites, favorable uncaging quantum yields, and highly adjustable spectral properties. Compared to traditional photocages that mainly absorb UV light, BODIPY-based photocages that absorb visible/near-infrared (Vis/NIR) light offer advantages such as deeper tissue penetration and reduced bio-autofluorescence, making them highly suitable for various biomedical applications. Consequently, different types of photoactivated protective groups based on the BODIPY skeleton have been established. This highlight provides a comprehensive overview of the strategies employed to construct BODIPY photocages by substituting leaving groups at different positions within the BODIPY fluorophore, including the meso-methyl position, boron position, 2,6-position, and 3,5-position. Furthermore, the application of these BODIPY photocages in biomedical fields, such as fluorescence imaging and controlled release of active species, is discussed.
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Affiliation(s)
- Heng Li
- Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241002, China.
| | - Jun Wang
- Anhui Engineering Laboratory for Medicinal and Food Homologous Natural Resources Exploration, Department of Chemistry and Pharmaceutical Engineering, Hefei Normal University, Hefei, 230601, China.
| | - Lijuan Jiao
- Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241002, China.
| | - Erhong Hao
- Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241002, China.
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2
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Dissanayake KC, Yuan D, Winter AH. Structure-Photoreactivity Studies of BODIPY Photocages: Limitations of the Activation Barrier for Optimizing Photoreactions. J Org Chem 2024; 89:6740-6748. [PMID: 38695507 PMCID: PMC11198865 DOI: 10.1021/acs.joc.3c02980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
BODIPY photocages are photoreactive chromophores that release covalently linked cargo upon absorption of visible light. Here, we used computations of the T1 photoheterolysis barrier to ascertain whether a computational approach could assist in a priori structure design by identifying new structures with higher quantum yields of photorelease. The electronic structure-photoreactivity relationships were elucidated for boron-substituted and core-functionalized 2-substituted BODIPY photocages as well as aryl substitutions at the meso-methyl position. Although there is a clear trend for the 2-substituted derivatives, with donor-substituted derivatives featuring both lower computed barriers and higher experimental quantum yields, no trend in the quantum yield with the computed activation barrier is found for the meso-methyl-substituted or boron-substituted derivatives. The lack of a correlation between the experimental quantum yield with the computed barrier in the latter two substitution cases is attributed to the substituents having larger effects on the rates of competing channels (internal conversion and competitive photoreactions) than on the rate of the photoheterolysis channel. Thus, although in some cases computed photoreaction barriers can aid in identifying structures with higher quantum yields, the ignored impacts of how changing the structure affects the rates of competing photophysical/photochemical channels limit the effectiveness of this single-parameter approach.
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Affiliation(s)
- Komadhie C Dissanayake
- Department of Chemistry, Iowa State University, 1608 Gilman Hall, Ames, Iowa 50010, United States
| | - Ding Yuan
- Department of Chemistry, Iowa State University, 1608 Gilman Hall, Ames, Iowa 50010, United States
| | - Arthur H Winter
- Department of Chemistry, Iowa State University, 1608 Gilman Hall, Ames, Iowa 50010, United States
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3
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Wohlrábová L, Sahlbach M, Heckel A, Slanina T. BODIPY phototether enables oligonucleotide cyclization and subsequent deprotection by tissue-transparent red light. Chem Commun (Camb) 2024; 60:4366-4369. [PMID: 38563214 DOI: 10.1039/d4cc00272e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
meso-methyl-BODIPY photocages release a leaving group upon visible light irradiation but often lack thermal stability. In turn, our thermally-stable, red-shifted BODIPY phototether allows oligonucleotide cyclization, preventing complementary strand hybridization. Hybridization resumes upon red-NIR irradiation, disconnecting the phototether by oxidative cleavage, which is easily monitored by a blue shift in fluorescence.
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Affiliation(s)
- Lucie Wohlrábová
- Institute of Organic Chemistry and Biochemistry, Flemingovo náměstí 542, Prague 160 00, Czech Republic.
- Department of Organic Chemistry, University of Chemistry and Technology Prague, 166 28, Prague 6, Czech Republic
| | - Marlen Sahlbach
- Goethe Universität Frankfurt, Max-von-Laue-Strasse 7, Frankfurt am Main 60438, Germany
| | - Alexander Heckel
- Goethe Universität Frankfurt, Max-von-Laue-Strasse 7, Frankfurt am Main 60438, Germany
| | - Tomáš Slanina
- Institute of Organic Chemistry and Biochemistry, Flemingovo náměstí 542, Prague 160 00, Czech Republic.
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4
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Klimezak M, Chaud J, Brion A, Bolze F, Frisch B, Heurtault B, Kichler A, Specht A. Triplet-Triplet Annihilation Upconversion-Based Photolysis: Applications in Photopharmacology. Adv Healthc Mater 2024:e2400354. [PMID: 38613491 DOI: 10.1002/adhm.202400354] [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: 01/29/2024] [Revised: 04/04/2024] [Indexed: 04/15/2024]
Abstract
The emerging field of photopharmacology is a promising chemobiological methodology for optical control of drug activities that could ultimately solve the off-target toxicity outside the disease location of many drugs for the treatment of a given pathology. The use of photolytic reactions looks very attractive for a light-activated drug release but requires to develop photolytic reactions sensitive to red or near-infrared light excitation for better tissue penetration. This review will present the concepts of triplet-triplet annihilation upconversion-based photolysis and their recent in vivo applications for light-induced drug delivery using photoactivatable nanoparticles.
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Affiliation(s)
- Maxime Klimezak
- Laboratoire de Chémo-Biologie Synthétique et Thérapeutique (CBST), Équipe Nanoparticules Intelligentes, Université de Strasbourg, CNRS, CBST UMR 7199, Illkirch Cedex, F-67401, France
| | - Juliane Chaud
- Laboratoire de Chémo-Biologie Synthétique et Thérapeutique (CBST), Équipe Nanoparticules Intelligentes, Université de Strasbourg, CNRS, CBST UMR 7199, Illkirch Cedex, F-67401, France
- Inserm UMR_S 1121, EMR 7003 CNRS, Université de Strasbourg, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, 1 rue Eugène Boeckel, Strasbourg, F-67000, France
| | - Anaïs Brion
- Inserm UMR_S 1121, EMR 7003 CNRS, Université de Strasbourg, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, 1 rue Eugène Boeckel, Strasbourg, F-67000, France
| | - Frédéric Bolze
- Laboratoire de Chémo-Biologie Synthétique et Thérapeutique (CBST), Équipe Nanoparticules Intelligentes, Université de Strasbourg, CNRS, CBST UMR 7199, Illkirch Cedex, F-67401, France
| | - Benoit Frisch
- Inserm UMR_S 1121, EMR 7003 CNRS, Université de Strasbourg, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, 1 rue Eugène Boeckel, Strasbourg, F-67000, France
| | - Béatrice Heurtault
- Inserm UMR_S 1121, EMR 7003 CNRS, Université de Strasbourg, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, 1 rue Eugène Boeckel, Strasbourg, F-67000, France
| | - Antoine Kichler
- Inserm UMR_S 1121, EMR 7003 CNRS, Université de Strasbourg, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, 1 rue Eugène Boeckel, Strasbourg, F-67000, France
| | - Alexandre Specht
- Laboratoire de Chémo-Biologie Synthétique et Thérapeutique (CBST), Équipe Nanoparticules Intelligentes, Université de Strasbourg, CNRS, CBST UMR 7199, Illkirch Cedex, F-67401, France
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5
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Dunlop D, Horváth P, Klán P, Slanina T, Šebej P. Central Ring Puckering Enhances the Stokes Shift of Xanthene Dyes. Chemistry 2024; 30:e202400024. [PMID: 38197554 DOI: 10.1002/chem.202400024] [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: 01/03/2024] [Revised: 01/05/2024] [Accepted: 01/08/2024] [Indexed: 01/11/2024]
Abstract
Small-molecule dyes are generally designed based on well-understood electronic effects. However, steric hindrance can promote excited-state geometric relaxation, increasing the difference between the positions of absorption and emission bands (the Stokes shift). Accordingly, we hypothesized that sterically induced central ring puckering in xanthene dyes could be used to systematically increase their Stokes shift. Through a combined experimental/quantum-chemical approach, we screened a group of (9-acylimino)-pyronin dyes with a perturbed central ring geometry. Our results showed that an atom with sp3 hybridization in position 10 of (9-acylimino)-pyronins induces central ring puckering and facilitates excited-state geometric relaxation, thereby markedly enhancing their Stokes shifts (by up to ~2000 cm-1). Thus, we prepared fluorescent (9-acylimino)-pyronin pH sensors, which showed a Stokes shift disparity between acid and base forms of up to ~8700 cm-1. Moreover, the concept of ring puckering-enhanced Stokes shift can be applied to a wide range of xanthene analogues found in the literature. Therefore, central ring puckering may be reliably used as a strategy for enhancing Stokes shifts in the rational design of dyes.
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Affiliation(s)
- David Dunlop
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 542/2, Prague 6, 160 00, Czech Republic
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, Prague 2, 128 40, Czech Republic
| | - Peter Horváth
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Petr Klán
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
- RECETOX, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Tomáš Slanina
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 542/2, Prague 6, 160 00, Czech Republic
| | - Peter Šebej
- RECETOX, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
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6
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Kuzmina NS, Fedotova EA, Jankovic P, Gribova GP, Nyuchev AV, Fedorov AY, Otvagin VF. Enhancing Precision in Photodynamic Therapy: Innovations in Light-Driven and Bioorthogonal Activation. Pharmaceutics 2024; 16:479. [PMID: 38675140 PMCID: PMC11053670 DOI: 10.3390/pharmaceutics16040479] [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: 03/08/2024] [Revised: 03/29/2024] [Accepted: 03/29/2024] [Indexed: 04/28/2024] Open
Abstract
Over the past few decades, photodynamic therapy (PDT) has evolved as a minimally invasive treatment modality offering precise control over cancer and various other diseases. To address inherent challenges associated with PDT, researchers have been exploring two promising avenues: the development of intelligent photosensitizers activated through light-induced energy transfers, charges, or electron transfers, and the disruption of photosensitive bonds. Moreover, there is a growing emphasis on the bioorthogonal delivery or activation of photosensitizers within tumors, enabling targeted deployment and activation of these intelligent photosensitive systems in specific tissues, thus achieving highly precise PDT. This concise review highlights advancements made over the last decade in the realm of light-activated or bioorthogonal photosensitizers, comparing their efficacy and shaping future directions in the advancement of photodynamic therapy.
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Affiliation(s)
| | | | | | | | | | - Alexey Yu. Fedorov
- Department of Organic Chemistry, Lobachevsky State University of Nizhny Novgorod, Gagarina Av. 23, 603950 Nizhny Novgorod, Russia; (N.S.K.); (E.A.F.); (P.J.); (G.P.G.); (A.V.N.)
| | - Vasilii F. Otvagin
- Department of Organic Chemistry, Lobachevsky State University of Nizhny Novgorod, Gagarina Av. 23, 603950 Nizhny Novgorod, Russia; (N.S.K.); (E.A.F.); (P.J.); (G.P.G.); (A.V.N.)
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7
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Russo M, Janeková H, Meier D, Generali M, Štacko P. Light in a Heartbeat: Bond Scission by a Single Photon above 800 nm. J Am Chem Soc 2024; 146:8417-8424. [PMID: 38499198 PMCID: PMC10979397 DOI: 10.1021/jacs.3c14197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 03/03/2024] [Accepted: 03/05/2024] [Indexed: 03/20/2024]
Abstract
Photocages enable scientists to take full control over the activity of molecules using light as a biocompatible stimulus. Their emerging applications in photoactivated therapies call for efficient uncaging in the near-infrared (NIR) window, which represents a fundamental challenge. Here, we report synthetically accessible cyanine photocages that liberate alcohol, phenol, amine, and thiol payloads upon irradiation with NIR light up to 820 nm in aqueous media. The photocages display a unique chameleon-like behavior and operate via two distinct uncaging mechanisms: photooxidation and heterolytic bond cleavage. The latter process constitutes the first example of a direct bond scission by a single photon ever observed in cyanine dyes or at wavelengths exceeding 800 nm. Modulation of the beating rates of human cardiomyocytes that we achieved by light-actuated release of adrenergic agonist etilefrine at submicromolar concentrations and low NIR light doses (∼12 J cm-2) highlights the potential of these photocages in biology and medicine.
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Affiliation(s)
- Marina Russo
- Department
of Chemistry, University of Zurich, Wintherthurerstrasse 190, Zurich CH-8057, Switzerland
| | - Hana Janeková
- Department
of Chemistry, University of Zurich, Wintherthurerstrasse 190, Zurich CH-8057, Switzerland
| | - Debora Meier
- Institute
for Regenerative Medicine (IREM), University
of Zurich, Wagistrasse 12, Zurich CH-8952, Switzerland
| | - Melanie Generali
- Institute
for Regenerative Medicine (IREM), University
of Zurich, Wagistrasse 12, Zurich CH-8952, Switzerland
| | - Peter Štacko
- Department
of Chemistry, University of Zurich, Wintherthurerstrasse 190, Zurich CH-8057, Switzerland
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8
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Bhowmik R, Roy M. Recent advances on the development of NO-releasing molecules (NORMs) for biomedical applications. Eur J Med Chem 2024; 268:116217. [PMID: 38367491 DOI: 10.1016/j.ejmech.2024.116217] [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: 12/11/2023] [Revised: 02/02/2024] [Accepted: 02/02/2024] [Indexed: 02/19/2024]
Abstract
Nitric oxide (NO) is an important biological messenger as well as a signaling molecule that participates in a broad range of physiological events and therapeutic applications in biological systems. However, due to its very short half-life in physiological conditions, its therapeutic applications are restricted. Efforts have been made to develop an enormous number of NO-releasing molecules (NORMs) and motifs for NO delivery to the target tissues. These NORMs involve organic nitrate, nitrite, nitro compounds, transition metal nitrosyls, and several nanomaterials. The controlled release of NO from these NORMs to the specific site requires several external stimuli like light, sound, pH, heat, enzyme, etc. Herein, we have provided a comprehensive review of the biochemistry of nitric oxide, recent advancements in NO-releasing materials with the appropriate stimuli of NO release, and their biomedical applications in cancer and other disease control.
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Affiliation(s)
- Rintu Bhowmik
- Department of Chemistry, National Institute of Technology Manipur, Langol, 795004, Imphal West, Manipur, India
| | - Mithun Roy
- Department of Chemistry, National Institute of Technology Manipur, Langol, 795004, Imphal West, Manipur, India.
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9
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Hashimoto R, Minoshima M, Kikuchi K. Rational Design of Hydroxylated Thiazole Orange Photocages for Green Light-Triggered DNA Recombination. Chembiochem 2024; 25:e202300799. [PMID: 38153201 DOI: 10.1002/cbic.202300799] [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: 11/25/2023] [Revised: 12/24/2023] [Accepted: 12/28/2023] [Indexed: 12/29/2023]
Abstract
The precise control of DNA recombination enables the cell- or time-dependent regulation of gene expression in studies of gene function. Caged estrogen receptor ligands combined with a Cre-ERT2/loxP system are useful tools for light-triggered DNA recombination. However, the photolysis of most caged compounds requires ultraviolet or blue light, which is toxic and displays low tissue penetration. Although a cyanine-based photo-responsive protecting group (PPG) can release estrogen receptor ligands with longer-wavelength light, its low photolytic efficiency requires long illumination times. We developed a caged estrogen receptor ligand with improved green light-responsive PPGs. The rational modification of Hydroxylated Thiazole Orange (HTO) photocages using electron-donating groups (EDGs), such as dimethoxy (DiMeO)-substituted HTO, resulted in high photolytic efficiency (up to ϵΦ ≈320 M-1 cm-1 ). Theoretical calculations demonstrated that the enhanced photolytic efficiencies were derived from the increased intramolecular charge transfer by EDGs upon excitation. The efficient uncaging of estrogen receptor ligands enabled the control of gene recombination in a ligand-dependent Cre-ERT2/loxP system in live cells.
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Affiliation(s)
- Ryu Hashimoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Masafumi Minoshima
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
- JST, PRESTO, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Kazuya Kikuchi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
- Immunology Frontier Research Center, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
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10
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Schulte AM, Alachouzos G, Szymanski W, Feringa BL. The fate of the contact ion pair determines the photochemistry of coumarin-based photocleavable protecting groups. Chem Sci 2024; 15:2062-2073. [PMID: 38332822 PMCID: PMC10848663 DOI: 10.1039/d3sc05725a] [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: 10/26/2023] [Accepted: 01/05/2024] [Indexed: 02/10/2024] Open
Abstract
Photocleavable protecting groups (PPGs) enable the precise spatiotemporal control over the release of a payload of interest, in particular a bioactive substance, through light irradiation. A crucial parameter that determines the practical applicability of PPGs is the efficiency of payload release, largely governed by the quantum yield of photolysis (QY). Understanding which parameters determine the QY will prove crucial for engineering improved PPGs and their effective future applications, especially in the emerging field of photopharmacology. The Contact Ion Pair (CIP) has been recognized as an important intermediate in the uncaging process, but the key influence of its fate on the quantum yield has not been explored yet, limiting our ability to design improved PPGs. Here, we demonstrate that the CIP escape mechanism of PPGs is crucial for determining their payload- and solvent-dependent photolysis QY, and illustrate that an intramolecular type of CIP escape is superior over diffusion-dependent CIP escape. Furthermore, we report a strong correlation of the photolysis QY of a range of coumarin PPGs with the DFT-calculated height of all three energy barriers involved in the photolysis reaction, despite the vastly different mechanisms of CIP escape that these PPGs exhibit. Using the insights obtained through our analysis, we were able to predict the photolysis QY of a newly designed PPG with particularly high accuracy. The level of understanding of the factors determining the QY of PPGs presented here will move the ever-expanding field of PPG applications forward and provides a blueprint for the development of PPGs with QYs that are independent of payload-topology and solvent polarity.
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Affiliation(s)
- Albert Marten Schulte
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, Faculty for Science and Engineering, University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Georgios Alachouzos
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, Faculty for Science and Engineering, University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Wiktor Szymanski
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, Faculty for Science and Engineering, University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
- Department of Radiology, Medical Imaging Center, University Medical Center Groningen, University of Groningen Hanzeplein 1 9713 GZ Groningen The Netherlands
| | - Ben L Feringa
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, Faculty for Science and Engineering, University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
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11
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Wei H, Xie M, Chen M, Jiang Q, Wang T, Xing P. Shedding light on cellular dynamics: the progress in developing photoactivated fluorophores. Analyst 2024; 149:689-699. [PMID: 38180167 DOI: 10.1039/d3an01994b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Photoactivated fluorophores (PAFs) are highly effective imaging tools that exhibit a removal of caging groups upon light excitation, resulting in the restoration of their bright fluorescence. This unique property allows for precise control over the spatiotemporal aspects of small molecule substances, making them indispensable for studying protein labeling and small molecule signaling within live cells. In this comprehensive review, we explore the historical background of this field and emphasize recent advancements based on various reaction mechanisms. Additionally, we discuss the structures and applications of the PAFs. We firmly believe that the development of more novel PAFs will provide powerful tools to dynamically investigate cells and expand the applications of these techniques into new domains.
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Affiliation(s)
- Huihui Wei
- Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng 475004, China.
| | - Mingli Xie
- Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng 475004, China.
| | - Min Chen
- Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng 475004, China.
| | - Qinhong Jiang
- Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng 475004, China.
| | - Tenghui Wang
- Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng 475004, China.
| | - Panfei Xing
- Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng 475004, China.
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12
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Doležel J, Poryvai A, Slanina T, Filgas J, Slavíček P. Spin-Vibronic Coupling Controls the Intersystem Crossing of Iodine-Substituted BODIPY Triplet Chromophores. Chemistry 2024; 30:e202303154. [PMID: 37905588 DOI: 10.1002/chem.202303154] [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: 09/27/2023] [Revised: 10/30/2023] [Accepted: 10/30/2023] [Indexed: 11/02/2023]
Abstract
4,4-Difluoro-4-borata-3a-azonia-4a-aza-s-indacene (BODIPY) dyes are extensively used in various applications of their triplet states, ranging from photoredox catalysis, through triplet sensitization to photodynamic therapy. However, the rational design of BODIPY triplet chromophores by ab initio modelling is limited by their strong interactions of spin, electronic and vibrational dynamics. In particular, spin-vibronic coupling is often overlooked when estimating intersystem crossing (ISC) rates. In this study, a combined experimental and theoretical approach using spin-vibronic coupling to correctly describe ISC in BODIPY dyes was developed. For this purpose, seven π-extended BODIPY derivatives with iodine atoms in different positions were examined. It was found that the heavy-atom effect of iodine atoms is site specific, causing high triplet yields in only some positions. This site-specific ISC was explained by El-Sayed rules, so both the contribution and character of the molecular orbitals involved in the excitation must be considered when predicting the ISC rates. Overall, the rational design of BODIPY triplet chromophores requires using (i) the high-quality electronic structure theory, including both static and dynamical correlations; and (ii) the two-component wave function Hamiltonian, and rationalizing; and (iii) ISC based on the character of the molecular orbitals of heavy atoms involved in the excitation, expanding El-Sayed rules beyond their traditional applications.
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Affiliation(s)
- Jiří Doležel
- Institute of Organic Chemistry and Biochemistry of the Czech Academy, Flemingovo nám. 542/2, Prague 6, 160 00, Czech Republic
| | - Anna Poryvai
- Institute of Organic Chemistry and Biochemistry of the Czech Academy, Flemingovo nám. 542/2, Prague 6, 160 00, Czech Republic
| | - Tomáš Slanina
- Institute of Organic Chemistry and Biochemistry of the Czech Academy, Flemingovo nám. 542/2, Prague 6, 160 00, Czech Republic
| | - Josef Filgas
- Department of Physical Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28, Prague 6, Czech Republic
| | - Petr Slavíček
- Department of Physical Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28, Prague 6, Czech Republic
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13
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Ma J, Egodawaththa NM, Guruge C, Márquez OAV, Likes M, Nesnas N. Blue and Green Light Responsive Caged Glutamate. J Photochem Photobiol A Chem 2024; 447:115183. [PMID: 37928883 PMCID: PMC10621743 DOI: 10.1016/j.jphotochem.2023.115183] [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] [Indexed: 11/07/2023]
Abstract
Glutamate (Glu) is an excitatory neurotransmitter that plays a critical role in memory. Brain mapping activities of such pathways relied heavily on the ability to release Glu with spatiotemporal precision. Several photo-protecting groups (PPGs), referred to as photocages or cages, were designed to accomplish the release of Glu upon irradiation. Previously reported Glu cages responded to UV upon irradiation with single photons, which limited their use in vivo experiments due to cytotoxicity. Other caged designs suffered from lower quantum efficiency (QE) of release necessitating higher concentrations and/or longer photoirradiation times. There have been limited examples of cages that respond to visible light with single photon irradiation. Herein, we report the efficient preparation of 11 caged Glu examples that respond to two visible wavelengths, 467 nm (thiocoumarin based) and 515-540 nm (BODIPY based). The kinetics of photouncaging were studied for all caged designs, and we report all quantum efficiencies, i.e., quantum yields (Φ), that ranged from 0.0001-0.65. Two of the BODIPY cages are reported here for the first time, and one, Me-BODIPY-Br-Glu, shows the most efficient Glu release with a QE of 0.65. Similar caged designs can be extended to the inhibitory neurotransmitter, GABA. This would enable the use of two visible wavelengths to modulate the release of excitatory and inhibitory neurotransmitters upon demand via optical control.
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Affiliation(s)
| | | | - Charitha Guruge
- Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, 150 West University Blvd., Melbourne, FL 32901, United States
| | - Oriana A. Valladares Márquez
- Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, 150 West University Blvd., Melbourne, FL 32901, United States
| | - Molly Likes
- Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, 150 West University Blvd., Melbourne, FL 32901, United States
| | - Nasri Nesnas
- Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, 150 West University Blvd., Melbourne, FL 32901, United States
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14
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Schulte AM, Smid LM, Alachouzos G, Szymanski W, Feringa BL. Cation delocalization and photo-isomerization enhance the uncaging quantum yield of a photocleavable protecting group. Chem Commun (Camb) 2024; 60:578-581. [PMID: 38095129 PMCID: PMC10783650 DOI: 10.1039/d3cc05055f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 12/04/2023] [Indexed: 01/12/2024]
Abstract
Photocleavable protecting groups (PPGs) enable the light-induced, spatiotemporal control over the release of a payload of interest. Two fundamental challenges in the design of new, effective PPGs are increasing the quantum yield (QY) of photolysis and red-shifting the absorption spectrum. Here we describe the combination of two photochemical strategies for PPG optimization in one molecule, resulting in significant improvements in both these crucial parameters. Furthermore, we for the first time identify the process of photo-isomerization to strongly influence the QY of photolysis of a PPG and identify the cis-isomer as the superior PPG.
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Affiliation(s)
- Albert Marten Schulte
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, Faculty for Science and Engineering, University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands.
| | - Lianne M Smid
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, Faculty for Science and Engineering, University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands.
| | - Georgios Alachouzos
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, Faculty for Science and Engineering, University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands.
| | - Wiktor Szymanski
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, Faculty for Science and Engineering, University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands.
- Department of Radiology, Medical Imaging Center, University Medical Center Groningen, University of Groningen, Hanzeplein 1, Groningen 9713 GZ, The Netherlands
| | - Ben L Feringa
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, Faculty for Science and Engineering, University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands.
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15
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Situ Z, Lu M, Chen W, Xie Z, Chen SL, Dang L, Li MD. Boosting the Release of Leaving Group from Blebbistatin Derivative Photocages via Enhancing Intramolecular Charge Transfer and Stabilizing Cationic Intermediate. J Phys Chem Lett 2023; 14:11580-11586. [PMID: 38100086 DOI: 10.1021/acs.jpclett.3c02970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
Blebbistatin (Bleb) derivatives are a visible light photocage platform. During the photocleavage process, intramolecular charge transfer (ICT) and cationic intermediates play a decisive role. However, slow photolysis rate and low photolysis quantum yield are the main problems for Bleb's derivatives. Herein, by introducing a substituted OCH3 group at the para-position of the D ring, Bleb and Bleb derivatives with various leaving groups were synthesized and studied, and the photolysis performance was unveiled by steady-state spectra, photolysis rate experiments, photolysis quantum yield, and density functional theory calculations. Substituted OCH3 derivatives of Bleb may enhance the photolysis rate and increase the photolysis quantum yield because the electron-donating group can promote the ICT process and stabilize the cationic intermediate during the photolytic reaction. More generally, the insights gained from this structure-reactivity relationship may provide theoretical guidance and aid in the development of new highly efficient photoreactions.
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Affiliation(s)
- Zicong Situ
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, China
| | - Manlin Lu
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, China
| | - Wenbin Chen
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, China
| | - Zuoti Xie
- Department of Materials Science and Engineering, MATEC, Guangdong Technion-Israel Institute of Technology, Shantou, Guangdong 515063, China
| | - Shun Li Chen
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, China
| | - Li Dang
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, China
| | - Ming-De Li
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, China
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou 515031, China
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16
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Zlatić K, Popović M, Uzelac L, Kralj M, Basarić N. Antiproliferative activity of meso-substituted BODIPY photocages: Effect of electrophiles vs singlet oxygen. Eur J Med Chem 2023; 259:115705. [PMID: 37544182 DOI: 10.1016/j.ejmech.2023.115705] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 07/21/2023] [Accepted: 07/31/2023] [Indexed: 08/08/2023]
Abstract
A series of BODIPY compounds with a methylphenol substituent at the meso-position and halogen atoms on the BODIPY core, or OCH3 or OAc substituents at the phenolic moiety was synthesized. Their spectral and photophysical properties and the photochemical reactivity upon irradiation in CH3OH were investigated. The molecules with the phenolic substituent at the meso-position undergo more efficient photo-methanolysis at the boron atom, while the introduction of the OCH3 group at the phenolic moiety changes the reaction selectivity towards the cleavage at the meso-position. The introduction of the halogen atoms into the BODIPY increases the photo-cleavage reaction efficiency, as well as the ability of the molecules to sensitize oxygen and form reactive oxygen species (ROS). The efficiency of the ROS formation was measured in comparison with that of tetraphenylporphyrin. The antiproliferative effect of BODIPY molecules was investigated against three human cancer cell lines MCF-7 (breast carcinoma), H460 (lung carcinoma), HCT116 (colon carcinoma), and two non-cancer cell lines, HEK293T (embryonic kindey) and HaCaT (keratinocytes), with the cells kept in the dark or irradiated with visible light. For most of the compounds a modest or no antiproliferative activity was observed for cells in the dark. However, when cells were irradiated, a dramatic increase in cytotoxicity was observed (more than 100-fold), with IC50 values in the submicromolar concentration range. The enhancement of the cytotoxic effect was explained by the formation of ROS, which was studied for cells in vitro. However, for some BODIPY compounds, the effects due to the formation of electrophilic species (carbocations and quinone methides, which react with biomolecules) cannot be disregarded. Confocal fluorescence microscopy images of H460 cells and HEK293T show that the compounds enter the cells and are retained in the cytoplasm and membranes of the various organelles. When the cells treated with the compounds are irradiated, photo-processes lead to cell death by apoptosis. The study performed is important because it provides bases for the development of novel photo-therapeutics capable of exerting photo-cytotoxic effects in both oxygenated and hypoxic cells.
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Affiliation(s)
- Katarina Zlatić
- Department of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička Cesta 54, 10 000, Zagreb, Croatia; Division of Molecular Medicine, Ruđer Bošković Institute, Bijenička Cesta 54, 10 000, Zagreb, Croatia; Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Trg Marka Marulića 19, 10000, Zagreb, Croatia.
| | - Matija Popović
- Department of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička Cesta 54, 10 000, Zagreb, Croatia
| | - Lidija Uzelac
- Division of Molecular Medicine, Ruđer Bošković Institute, Bijenička Cesta 54, 10 000, Zagreb, Croatia
| | - Marijeta Kralj
- Division of Molecular Medicine, Ruđer Bošković Institute, Bijenička Cesta 54, 10 000, Zagreb, Croatia.
| | - Nikola Basarić
- Department of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička Cesta 54, 10 000, Zagreb, Croatia.
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17
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Wan Z, Yu S, Wang Q, Sambath K, Harty R, Liu X, Chen H, Wang C, Liu X, Zhang Y. Far-red BODIPY-based oxime esters: photo-uncaging and drug delivery. J Mater Chem B 2023; 11:9889-9893. [PMID: 37850246 PMCID: PMC10750304 DOI: 10.1039/d3tb01867a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2023]
Abstract
Far-red BODIPY-based oxime esters for photo-uncaging were designed to release molecules of interest with carboxylic acids. The low power red LED light breaks the N-O oxime ester bond and frees the caged molecules. We studied the mechanism and kinetics of the uncaging procedure using a 1H NMR spectrometer. Moreover, the drug delivery strategy to release valproic acid (VPA) on demand was tested in vitro using this far-red BODIPY photo-uncaging strategy to induce apoptosis in tumor cells.
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Affiliation(s)
- Zhaoxiong Wan
- Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King Jr. Blvd., Newark, New Jersey 07102, USA.
| | - Shupei Yu
- Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King Jr. Blvd., Newark, New Jersey 07102, USA.
| | - Qi Wang
- Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King Jr. Blvd., Newark, New Jersey 07102, USA.
| | - Karthik Sambath
- Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King Jr. Blvd., Newark, New Jersey 07102, USA.
| | - Roshena Harty
- Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King Jr. Blvd., Newark, New Jersey 07102, USA.
| | - Xiangshan Liu
- Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King Jr. Blvd., Newark, New Jersey 07102, USA.
| | - Hao Chen
- Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King Jr. Blvd., Newark, New Jersey 07102, USA.
| | - Chen Wang
- Department of Chemistry and Biochemistry, Queens College, City University of New York, 65-30 Kissena Blvd., New York 11432, USA
| | - Xuan Liu
- Department of Electrical and Computer Engineering, New Jersey Institute of Technology, 323 Martin Luther King Jr. Blvd., Newark, New Jersey 07102, USA
| | - Yuanwei Zhang
- Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King Jr. Blvd., Newark, New Jersey 07102, USA.
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18
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Hua Y, Strauss M, Fisher S, Mauser MFX, Manchet P, Smacchia M, Geyer P, Shayeghi A, Pfeffer M, Eggenweiler TH, Daly S, Commandeur J, Mayor M, Arndt M, Šolomek T, Köhler V. Giving the Green Light to Photochemical Uncaging of Large Biomolecules in High Vacuum. JACS AU 2023; 3:2790-2799. [PMID: 37885583 PMCID: PMC10598566 DOI: 10.1021/jacsau.3c00351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 10/02/2023] [Accepted: 10/02/2023] [Indexed: 10/28/2023]
Abstract
The isolation of biomolecules in a high vacuum enables experiments on fragile species in the absence of a perturbing environment. Since many molecular properties are influenced by local electric fields, here we seek to gain control over the number of charges on a biopolymer by photochemical uncaging. We present the design, modeling, and synthesis of photoactive molecular tags, their labeling to peptides and proteins as well as their photochemical validation in solution and in the gas phase. The tailored tags can be selectively cleaved off at a well-defined time and without the need for any external charge-transferring agents. The energy of a single or two green photons can already trigger the process, and it is soft enough to ensure the integrity of the released biomolecular cargo. We exploit differences in the cleavage pathways in solution and in vacuum and observe a surprising robustness in upscaling the approach from a model system to genuine proteins. The interaction wavelength of 532 nm is compatible with various biomolecular entities, such as oligonucleotides or oligosaccharides.
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Affiliation(s)
- Yong Hua
- Department
of Chemistry, University of Basel, St. Johannsring 19, CH-4056 Basel, Switzerland
| | - Marcel Strauss
- Vienna
Faculty of Physics, University of Vienna,
VDSP & VCQ, Boltzmanngasse 5, A-1090 Vienna, Austria
| | - Sergey Fisher
- Van’t
Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, PO Box 94157, 1090 GD Amsterdam, The Netherlands
| | - Martin F. X. Mauser
- Vienna
Faculty of Physics, University of Vienna,
VDSP & VCQ, Boltzmanngasse 5, A-1090 Vienna, Austria
| | - Pierre Manchet
- Vienna
Faculty of Physics, University of Vienna,
VDSP & VCQ, Boltzmanngasse 5, A-1090 Vienna, Austria
| | - Martina Smacchia
- Vienna
Faculty of Physics, University of Vienna,
VDSP & VCQ, Boltzmanngasse 5, A-1090 Vienna, Austria
| | - Philipp Geyer
- Vienna
Faculty of Physics, University of Vienna,
VDSP & VCQ, Boltzmanngasse 5, A-1090 Vienna, Austria
| | - Armin Shayeghi
- Vienna
Faculty of Physics, University of Vienna,
VDSP & VCQ, Boltzmanngasse 5, A-1090 Vienna, Austria
| | - Michael Pfeffer
- Department
of Chemistry, University of Basel, St. Johannsring 19, CH-4056 Basel, Switzerland
| | - Tim Henri Eggenweiler
- Department
of Chemistry, University of Basel, St. Johannsring 19, CH-4056 Basel, Switzerland
| | - Steven Daly
- MS
Vision, Televisieweg
40, 1322 AM Almere, The Netherlands
| | - Jan Commandeur
- MS
Vision, Televisieweg
40, 1322 AM Almere, The Netherlands
| | - Marcel Mayor
- Department
of Chemistry, University of Basel, St. Johannsring 19, CH-4056 Basel, Switzerland
- Institute
for Nanotechnology (INT), Karlsruhe Institute
of Technology (KIT), P.O. Box 3640, DE-76021 Karlsruhe Eggenstein-Leopoldshafen, Germany
- Lehn Institute
of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510274, P. R. China
| | - Markus Arndt
- Vienna
Faculty of Physics, University of Vienna,
VDSP & VCQ, Boltzmanngasse 5, A-1090 Vienna, Austria
| | - Tomáš Šolomek
- Van’t
Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, PO Box 94157, 1090 GD Amsterdam, The Netherlands
| | - Valentin Köhler
- Department
of Chemistry, University of Basel, St. Johannsring 19, CH-4056 Basel, Switzerland
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19
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Gagarin AA, Minin AS, Shevyrin VA, Kostova IP, Benassi E, Belskaya NP. Photocaging of Carboxylic Function Bearing Biomolecules by New Thiazole Derived Fluorophore. Chemistry 2023; 29:e202302079. [PMID: 37530503 DOI: 10.1002/chem.202302079] [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: 06/30/2023] [Revised: 07/26/2023] [Accepted: 07/31/2023] [Indexed: 08/03/2023]
Abstract
The design and synthesis of a new fluorophore containing an arylidene thiazole scaffold resulted in a compound with good photophysical characteristics. Furthermore, the thiazole C5-methyl group was easily modified into specific functional groups (CH2 Br and CH2 OH) for the formation of a series of photocourier molecules containing model compounds (benzoic acids), as well as prodrugs, including salicylic acid, caffeic acid, and chlorambucil via a "benzyl" linker. Spectral characteristics (1 H, 13 C NMR, and high-resolution mass spectra) corresponded to the proposed structures. The photocourier molecules demonstrated absorption with high values of coefficient of molar extinction, exhibited contrasting green emission, and showed good dark stability. The mechanism of the photorelease was investigated through spectral analysis, HPLC-HRMS, and supported by TD-DFT calculations. The photoheterolysis and elimination of carboxylic acids were proved to occur in the excited state, yielding a carbocation as an intermediate moiety. The fluorophore structure provided stability to the carbocation through the delocalization of the positive charge via resonance structures. Viability assessment of Vero cells using the MTT-test confirmed the weak cytotoxicity of prodrugs without irradiation and it increase upon UV-light.
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Affiliation(s)
- Aleksey A Gagarin
- Department of Technology for Organic Synthesis, Ural Federal University, 19 Mira Str., Yekaterinburg, 620002, Russia
| | - Artem S Minin
- Department of Technology for Organic Synthesis, Ural Federal University, 19 Mira Str., Yekaterinburg, 620002, Russia
- M. N. Mikheev Institute of Metal Physics, Ural Branch of Russian Academy of Science, 18S. Kovalevskaya Str., Yekaterinburg, 620108, Russia
| | - Vadim A Shevyrin
- Department of Technology for Organic Synthesis, Ural Federal University, 19 Mira Str., Yekaterinburg, 620002, Russia
| | - Irena P Kostova
- Department of Chemistry, Faculty of Pharmacy, Medical University-Sofia, 2 Dunav Str., Sofia, Bulgaria
| | - Enrico Benassi
- Novosibirsk State University, Pirogova Str. 2, 630090, Novosibirsk, Russia
| | - Nataliya P Belskaya
- Department of Technology for Organic Synthesis, Ural Federal University, 19 Mira Str., Yekaterinburg, 620002, Russia
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20
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Chung KY, Uddin A, Page ZA. Record release of tetramethylguanidine using a green light activated photocage for rapid synthesis of soft materials. Chem Sci 2023; 14:10736-10743. [PMID: 37829029 PMCID: PMC10566505 DOI: 10.1039/d3sc04130a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 09/06/2023] [Indexed: 10/14/2023] Open
Abstract
Photocages have enabled spatiotemporally governed organic materials synthesis with applications ranging from tissue engineering to soft robotics. However, the reliance on high energy UV light to drive an often inefficient uncaging process limits their utility. These hurdles are particularly evident for more reactive cargo, such as strong organobases, despite their attractive potential to catalyze a range of chemical transformations. Herein, two metal-free boron dipyrromethene (BODIPY) photocages bearing tetramethylguanidine (TMG) cargo are shown to induce rapid and efficient polymerizations upon exposure to a low intensity green LED. A suite of spectroscopic characterization tools were employed to identify the underlying uncaging and polymerization mechanisms, while also determining reaction quantum efficiencies. The results are directly compared to state-of-the-art TMG-bearing ortho-nitrobenzyl and coumainylmethyl photocages, finding that the present BODIPY derivatives enable step-growth polymerizations that are >10× faster than the next best performing photocage. As a final demonstration, the inherent multifunctionality of the present BODIPY platform in releasing radicals from one half of the molecule and TMG from the other is leveraged to prepare polymers with starkly disparate physical properties. The present findings are anticipated to enable new applications of photocages in both small-molecule photochemistry for medicine and advanced manufacturing of next generation soft materials.
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Affiliation(s)
- Kun-You Chung
- Department of Chemistry, The University of Texas at Austin Austin Texas 78712 USA
| | - Ain Uddin
- Department of Chemistry, The University of Texas at Austin Austin Texas 78712 USA
| | - Zachariah A Page
- Department of Chemistry, The University of Texas at Austin Austin Texas 78712 USA
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21
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Kim S, Doukmak EJ, Shanguhyia M, Gray DJ, Steinhardt RC. Photoactivatable Agonist-Antagonist Pair as a Tool for Precise Spatiotemporal Control of Serotonin Receptor 2C Signaling. ACS Chem Neurosci 2023; 14:3665-3673. [PMID: 37721710 PMCID: PMC10557072 DOI: 10.1021/acschemneuro.3c00290] [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: 05/02/2023] [Accepted: 09/01/2023] [Indexed: 09/19/2023] Open
Abstract
Orthogonal recreation of the signaling profile of a chemical synapse is a current challenge in neuroscience. This is due in part to the kinetics of synaptic signaling, where neurotransmitters are rapidly released and quickly cleared by active reuptake machinery. One strategy to produce a rapid rise in an orthogonally controlled signal is via photocaged compounds. In this work, photocaged compounds are employed to recreate both the rapid rise and equally rapid fall in activation at a chemical synapse. Specifically, a complementary pair of photocages based on BODIPY were conjugated to a 5-HT2C subtype-selective agonist, WAY-161503, and antagonist, N-desmethylclozapine, to generate "caged" versions of these drugs. These conjugates release the bioactive drug upon illumination with green light (agonist) or red light (antagonist). We report on the synthesis, characterization, and bioactivity testing of the conjugates against the 5-HT2C receptor. We then characterize the kinetics of photolysis quantitatively using HPLC and qualitatively in cell culture conditions stimulating live cells. The compounds are shown to be stable in the dark for 48 h at room temperature, yet photolyze rapidly when irradiated with visible light. In live cells expressing the 5-HT2C receptor, precise spatiotemporal control of the degree and length of calcium signaling is demonstrated. By loading both compounds in tandem and leveraging spectral multiplexing as a noninvasive method to control local small-molecule drug availability, we can reproducibly initiate and suppress intracellular calcium flux on a timescale not possible by traditional methods of drug dosing. These tools enable a greater spatiotemporal control of 5-HT2C modulation and will allow for more detailed studies of the receptors' signaling, interactions with other proteins, and native physiology.
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Affiliation(s)
- Spencer
T. Kim
- Syracuse University, Syracuse, New York 13244, United States
| | - Emma J. Doukmak
- Syracuse University, Syracuse, New York 13244, United States
| | | | - Dylan J. Gray
- Syracuse University, Syracuse, New York 13244, United States
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22
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Hamerla C, Mondal P, Hegger R, Burghardt I. Controlled destabilization of caged circularized DNA oligonucleotides predicted by replica exchange molecular dynamics simulations. Phys Chem Chem Phys 2023; 25:26132-26144. [PMID: 37740309 DOI: 10.1039/d3cp02961a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/24/2023]
Abstract
Spatiotemporal control is a critical issue in the design of strategies for the photoregulation of oligonucleotide activity. Efficient uncaging, i.e., activation by removal of photolabile protecting groups (PPGs), often necessitates multiple PPGs. An alternative approach is based on circularization strategies, exemplified by intrasequential circularization, also denoted photo-tethering, as introduced in [Seyfried et al., Angew. Chem., Int. Ed., 2017, 56, 359]. Here, we develop a computational protocol, relying on replica exchange molecular dynamics (REMD), in order to characterize the destabilization of a series of circularized, caged DNA oligonucleotides addressed in the aforementioned study. For these medium-sized (32 nt) oligonucleotides, melting temperatures are computed, whose trend is in good agreement with experiment, exhibiting a large destabilization and, hence, reduction of the melting temperature of the order of ΔTm ∼ 30 K as compared with the native species. The analysis of free energy landscapes confirms the destabilization pattern experienced by the circularized oligonucleotides. The present study underscores that computational protocols that capture controlled destabilization and uncaging of oligonucleotides are promising as predictive tools in the tailored photocontrol of nucleic acids.
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Affiliation(s)
- Carsten Hamerla
- Institute of Physical and Theoretical Chemistry, Goethe University Frankfurt, Max-von-Laue-Str. 7, 60438 Frankfurt am Main, Germany.
| | - Padmabati Mondal
- Department of Chemistry and Center for Atomic, Molecular, and Optical Sciences and Technologies (CAMOST), Indian Institute of Science Education and Research (IISER) Tirupati, Panguru (G.P), Yerpedu Mandal, 517619 - Tirupati Dist., Andhra Pradesh, India
| | - Rainer Hegger
- Institute of Physical and Theoretical Chemistry, Goethe University Frankfurt, Max-von-Laue-Str. 7, 60438 Frankfurt am Main, Germany.
| | - Irene Burghardt
- Institute of Physical and Theoretical Chemistry, Goethe University Frankfurt, Max-von-Laue-Str. 7, 60438 Frankfurt am Main, Germany.
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23
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Yu S, Reddy O, Abaci A, Ai Y, Li Y, Chen H, Guvendiren M, Belfield KD, Zhang Y. Novel BODIPY-Based Photobase Generators for Photoinduced Polymerization. ACS APPLIED MATERIALS & INTERFACES 2023; 15:45281-45289. [PMID: 37708358 DOI: 10.1021/acsami.3c09326] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Abstract
Photobase generators (PBGs) are compounds that utilize light-sensitive chemical-protecting groups to offer spatiotemporal control of releasing organic bases upon targeted light irradiation. PBGs can be implemented as an external control to initiate anionic polymerizations such as thiol-ene Michael addition reactions. However, there are limitations for common PBGs, including a short absorption wavelength and weak base release that lead to poor efficiency in photopolymerization. Therefore, there is a great need for visible-light-triggered PBGs that are capable of releasing strong bases efficiently. Here, we report two novel BODIPY-based visible-light-sensitive PBGs for light-induced activation of the thiol-ene Michael "click" reaction and polymerization. These PBGs were designed by connecting the BODIPY-based light-sensitive protecting group with tetramethylguanidine (TMG), a strong base. Moreover, we exploited the heavy atom effect to increase the efficiency of releasing TMG and the polymerization rate. These BODIPY-based PBGs exhibit extraordinary activity toward thiol-ene Michael addition-based polymerization, and they can be used in surface coating and polymer network formation of different thiol and vinyl monomers.
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Affiliation(s)
- Shupei Yu
- . . Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King Jr. Blvd., Newark, New Jersey 07102, United States
| | - Ojasvita Reddy
- . . Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King Jr. Blvd., Newark, New Jersey 07102, United States
| | - Alperen Abaci
- . . Otto H. York Department of Chemical and Materials Engineering, New Jersey Institute of Technology, 161 Warren Street, Newark, New Jersey 07102, United States
| | - Yongling Ai
- . . Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King Jr. Blvd., Newark, New Jersey 07102, United States
| | - Yanmei Li
- . . Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King Jr. Blvd., Newark, New Jersey 07102, United States
| | - Hao Chen
- . . Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King Jr. Blvd., Newark, New Jersey 07102, United States
| | - Murat Guvendiren
- . . Otto H. York Department of Chemical and Materials Engineering, New Jersey Institute of Technology, 161 Warren Street, Newark, New Jersey 07102, United States
| | - Kevin D Belfield
- . . Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King Jr. Blvd., Newark, New Jersey 07102, United States
| | - Yuanwei Zhang
- . . Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King Jr. Blvd., Newark, New Jersey 07102, United States
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24
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Gartland SA, Johnson TG, Walkley E, Langton MJ. Inter-Vesicle Signal Transduction Using a Photo-Responsive Zinc Ionophore. Angew Chem Int Ed Engl 2023; 62:e202309080. [PMID: 37497854 DOI: 10.1002/anie.202309080] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 07/24/2023] [Accepted: 07/27/2023] [Indexed: 07/28/2023]
Abstract
Transmission of chemical information between cells and across lipid bilayer membranes is of profound significance in many biological processes. The design of synthetic signalling systems is a critical step towards preparing artificial cells with collective behaviour. Here, we report the first example of a synthetic inter-vesicle signalling system, in which diffusible chemical signals trigger transmembrane ion transport in a manner reminiscent of signalling pathways in biology. The system is derived from novel ortho-nitrobenzyl and BODIPY photo-caged ZnII transporters, in which cation transport is triggered by photo-decaging with UV or red light, respectively. This decaging reaction can be used to trigger the release of the cationophores from a small population of sender vesicles. This in turn triggers the transport of ions across the membrane of a larger population of receiver vesicles, but not across the sender vesicle membrane, leading to overall inter-vesicle signal transduction and amplification.
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Affiliation(s)
- Shaun A Gartland
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK
| | - Toby G Johnson
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK
| | - Euan Walkley
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK
| | - Matthew J Langton
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK
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25
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Wohlrábová L, Okoročenkova J, Palao E, Kužmová E, Chalupský K, Klán P, Slanina T. Sulfonothioated meso-Methyl BODIPY Shows Enhanced Uncaging Efficiency and Releases H 2S n. Org Lett 2023; 25:6705-6709. [PMID: 37668439 PMCID: PMC10510718 DOI: 10.1021/acs.orglett.3c02511] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Indexed: 09/06/2023]
Abstract
meso-Methyl BODIPY photocages stand out for their absorption properties and easy chromophore derivatization. However, their low uncaging efficiencies often hinder applications requiring release of protected substrates in high amounts. In this study, we demonstrate that the sulfonothioated BODIPY group photocleaves a sulfonylthio group from the meso-methyl position with a 10-fold higher quantum yield than the most efficient leaving groups studied to date. Photocleavage, observed in solution and in cells, is accompanied by the spatiotemporally controlled photorelease of H2Sn. For this reason, sulfonothioated BODIPY may be applied in cell signaling, redox homeostasis, and metabolic regulation studies.
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Affiliation(s)
- Lucie Wohlrábová
- Institute
of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 542/2, 160 00 Praha 6, Czech Republic
| | - Jana Okoročenkova
- Department
of Chemistry, Masaryk University, Kamenice 5, 625 00 Brno, Czech
Republic
- RECETOX, Masaryk University, Kamenice 5, 625 00 Brno, Czech
Republic
| | - Eduardo Palao
- Department
of Chemistry, Masaryk University, Kamenice 5, 625 00 Brno, Czech
Republic
- RECETOX, Masaryk University, Kamenice 5, 625 00 Brno, Czech
Republic
| | - Erika Kužmová
- Institute
of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 542/2, 160 00 Praha 6, Czech Republic
| | - Karel Chalupský
- Institute
of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 542/2, 160 00 Praha 6, Czech Republic
| | - Petr Klán
- Department
of Chemistry, Masaryk University, Kamenice 5, 625 00 Brno, Czech
Republic
- RECETOX, Masaryk University, Kamenice 5, 625 00 Brno, Czech
Republic
| | - Tomáš Slanina
- Institute
of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 542/2, 160 00 Praha 6, Czech Republic
- Institute
of Organic Chemistry and Chemical Biology, Goethe University, Max-von-Laue-Str.
7, 60438 Frankfurt
am Main, Germany
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26
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Tsai CY, Chen PH, Chen AL, Wang TSA. Spatiotemporal Investigation of Intercellular Heterogeneity via Multiple Photocaged Probes. Chemistry 2023; 29:e202301067. [PMID: 37382047 DOI: 10.1002/chem.202301067] [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: 04/03/2023] [Revised: 06/14/2023] [Accepted: 06/28/2023] [Indexed: 06/30/2023]
Abstract
Intercellular heterogeneity occurs widely under both normal physiological environments and abnormal disease-causing conditions. Several attempts to couple spatiotemporal information to cell states in a microenvironment were performed to decipher the cause and effect of heterogeneity. Furthermore, spatiotemporal manipulation can be achieved with the use of photocaged/photoactivatable molecules. Here, we provide a platform to spatiotemporally analyze differential protein expression in neighboring cells by multiple photocaged probes coupled with homemade photomasks. We successfully established intercellular heterogeneity (photoactivable ROS trigger) and mapped the targets (directly ROS-affected cells) and bystanders (surrounding cells), which were further characterized by total proteomic and cysteinomic analysis. Different protein profiles were shown between bystanders and target cells in both total proteome and cysteinome. Our strategy should expand the toolkit of spatiotemporal mapping for elucidating intercellular heterogeneity.
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Affiliation(s)
- Chun-Yi Tsai
- Department of Chemistry, National Taiwan University and Center for, Emerging Material and Advanced Devices, National Taiwan University, Taipei, 10617, Taiwan (R.O.C
| | - Po-Hsun Chen
- Department of Chemistry, National Taiwan University and Center for, Emerging Material and Advanced Devices, National Taiwan University, Taipei, 10617, Taiwan (R.O.C
| | - Ai-Lin Chen
- Department of Chemistry, National Taiwan University and Center for, Emerging Material and Advanced Devices, National Taiwan University, Taipei, 10617, Taiwan (R.O.C
| | - Tsung-Shing Andrew Wang
- Department of Chemistry, National Taiwan University and Center for, Emerging Material and Advanced Devices, National Taiwan University, Taipei, 10617, Taiwan (R.O.C
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27
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Ieda N, Nakamura A, Tomita N, Ohkubo K, Izumi R, Hotta Y, Kawaguchi M, Kimura K, Nakagawa H. A BODIPY-picolinium-cation conjugate as a blue-light-responsive caged group. RSC Adv 2023; 13:26375-26379. [PMID: 37671339 PMCID: PMC10476028 DOI: 10.1039/d3ra03826b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 08/20/2023] [Indexed: 09/07/2023] Open
Abstract
Caged compounds protected with photolabile protecting groups (PPGs) are useful for controlling various biological events with high spatiotemporal resolution. Most of the commonly used PPGs are controlled by ultraviolet light irradiation, but it is desirable to have PPGs controlled by visible light irradiation in order to minimize tissue damage. Here, we describe a boron-dipyrromethene (BODIPY)-picolinium conjugate (BPc group) that functions as a blue-light-controllable PPG. ESR experiments indicate that the photolysis mechanism is based on intramolecular photoinduced electron transfer. We illustrate the applicability of the BPc group to biologically active compounds by employing it firstly to photocontrol release of histamine, and secondly to photocontrol release of a soluble guanylyl cyclase (sGC) activator, GSK2181236A, which induces photovasodilation. The BPc group is expected to be a useful PPG for controlling various biological events with blue light irradiation.
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Affiliation(s)
- Naoya Ieda
- Graduate School of Pharmaceutical Sciences, Nagoya City University 3-1, Tanabe-dori, Mizuho-ku Nagoya Aichi 467-8603 Japan
| | - Akira Nakamura
- Graduate School of Pharmaceutical Sciences, Nagoya City University 3-1, Tanabe-dori, Mizuho-ku Nagoya Aichi 467-8603 Japan
| | - Natsumi Tomita
- Graduate School of Pharmaceutical Sciences, Nagoya City University 3-1, Tanabe-dori, Mizuho-ku Nagoya Aichi 467-8603 Japan
| | - Kei Ohkubo
- Institute for Open and Transdisciplinary Research Initiatives & Institute for Advanced Co-Creation Studies, Osaka University 1-6 Yamada-oka, Suita Osaka 565-0871 Japan
| | - Ryo Izumi
- Graduate School of Pharmaceutical Sciences, Nagoya City University 3-1, Tanabe-dori, Mizuho-ku Nagoya Aichi 467-8603 Japan
| | - Yuji Hotta
- Graduate School of Medical Sciences, Nagoya City University 1, Kawasumi, Mizuho-cho, Mizuho-ku Nagoya Aichi 467-8601 Japan
| | - Mitsuyasu Kawaguchi
- Graduate School of Pharmaceutical Sciences, Nagoya City University 3-1, Tanabe-dori, Mizuho-ku Nagoya Aichi 467-8603 Japan
| | - Kazunori Kimura
- Graduate School of Medical Sciences, Nagoya City University 1, Kawasumi, Mizuho-cho, Mizuho-ku Nagoya Aichi 467-8601 Japan
| | - Hidehiko Nakagawa
- Graduate School of Pharmaceutical Sciences, Nagoya City University 3-1, Tanabe-dori, Mizuho-ku Nagoya Aichi 467-8603 Japan
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28
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Shrestha P, Kand D, Weinstain R, Winter AH. meso-Methyl BODIPY Photocages: Mechanisms, Photochemical Properties, and Applications. J Am Chem Soc 2023; 145:17497-17514. [PMID: 37535757 DOI: 10.1021/jacs.3c01682] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
meso-methyl BODIPY photocages have recently emerged as an exciting new class of photoremovable protecting groups (PPGs) that release leaving groups upon absorption of visible to near-infrared light. In this Perspective, we summarize the development of these PPGs and highlight their critical photochemical properties and applications. We discuss the absorption properties of the BODIPY PPGs, structure-photoreactivity studies, insights into the photoreaction mechanism, the scope of functional groups that can be caged, the chemical synthesis of these structures, and how substituents can alter the water solubility of the PPG and direct the PPG into specific subcellular compartments. Applications that exploit the unique optical and photochemical properties of BODIPY PPGs are also discussed, from wavelength-selective photoactivation to biological studies to photoresponsive organic materials and photomedicine.
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Affiliation(s)
- Pradeep Shrestha
- Department of Chemistry, Iowa State University, Ames, Iowa 50010, United States
| | - Dnyaneshwar Kand
- School of Plant Sciences and Food Security, Tel-Aviv University, Tel-Aviv 6997801, Israel
| | - Roy Weinstain
- School of Plant Sciences and Food Security, Tel-Aviv University, Tel-Aviv 6997801, Israel
| | - Arthur H Winter
- Department of Chemistry, Iowa State University, Ames, Iowa 50010, United States
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29
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Chung KY, Page ZA. Boron-Methylated Dipyrromethene as a Green Light Activated Type I Photoinitiator for Rapid Radical Polymerizations. J Am Chem Soc 2023; 145:17912-17918. [PMID: 37540781 DOI: 10.1021/jacs.3c05373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/06/2023]
Abstract
Unimolecular (Type I) radical photoinitiators (PIs) have transformed the chemical manufacturing industry by enabling (stereo)lithography for microelectronics and emergent 3D printing technologies. However, the reliance on high energy UV-violet light (≤420 nm) restricts the end-use applications. Herein, boron-methylated dipyrromethene (methylated-BODIPY) is shown to act as a highly efficient Type I radical PI upon irradiation with low energy green light. Using a low intensity (∼4 mW/cm2) light emitting diode centered at 530 nm and a low PI concentration (0.3 mol %), acrylic-based resins were polymerized to maximum conversion in ∼10 s. Under equivalent conditions (wavelength, intensity, and PI concentration), state-of-the-art visible light PIs Ivocerin and Irgacure 784 show no appreciable polymerization. Spectroscopic characterization suggests that homolytic β-scission at the boron-carbon bond results in radical formation, which is further facilitated by accessing long-lived triplet excited states through installment of bromine. Alkylated-BODIPYs represent a new modular visible light PI platform with exciting potential to enable next generation manufacturing and biomedical applications where a spectrally discrete, low energy, and thus benign light source is required.
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Affiliation(s)
- Kun-You Chung
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Zachariah A Page
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
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30
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Mei S, Ou Q, Tang X, Xu JF, Zhang X. Stabilization of Carbocation Intermediate by Cucurbit[7]uril Enables High Photolysis Efficiency. Org Lett 2023; 25:5291-5296. [PMID: 37428144 DOI: 10.1021/acs.orglett.3c01854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
A cucurbit[7]uril-based host-guest strategy is employed to enhance the efficiency of photolysis reactions that release caged molecules from photoremovable protecting groups. The photolysis of benzyl acetate follows a heterolytic bond cleavage mechanism, thereby leading to the formation of a contact ion pair as the key reactive intermediate. The Gibbs free energy of the contact ion pair is lowered by 3.06 kcal/mol through the stabilization of cucurbit[7]uril, as revealed by DFT calculations, which results in a 40-fold increase in the quantum yield of the photolysis reaction. This methodology is also applicable to the chloride leaving group and the diphenyl photoremovable protecting group. We anticipate that this research presents a novel strategy to improve reactions involving active cationics, thereby enriching the field of supramolecular catalysis.
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Affiliation(s)
- Shan Mei
- Key Laboratory of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Qi Ou
- AI for Science Institute, Beijing 100080, China
- DP Technology, Beijing 100080, China
| | - Xingchen Tang
- Key Laboratory of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Jiang-Fei Xu
- Key Laboratory of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Xi Zhang
- Key Laboratory of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
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31
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López-Corrales M, Rovira A, Gandioso A, Nonell S, Bosch M, Marchán V. Mitochondria-Targeted COUPY Photocages: Synthesis and Visible-Light Photoactivation in Living Cells. J Org Chem 2023. [PMID: 37209100 DOI: 10.1021/acs.joc.3c00387] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Releasing bioactive molecules in specific subcellular locations from the corresponding caged precursors offers great potential in photopharmacology, especially when using biologically compatible visible light. By taking advantage of the intrinsic preference of COUPY coumarins for mitochondria and their long wavelength absorption in the visible region, we have synthesized and fully characterized a series of COUPY-caged model compounds to investigate how the structure of the coumarin caging group affects the rate and efficiency of the photolysis process. Uncaging studies using yellow (560 nm) and red light (620 nm) in phosphate-buffered saline medium have demonstrated that the incorporation of a methyl group in a position adjacent to the photocleavable bond is particularly important to fine-tune the photochemical properties of the caging group. Additionally, the use of a COUPY-caged version of the protonophore 2,4-dinitrophenol allowed us to confirm by confocal microscopy that photoactivation can occur within mitochondria of living HeLa cells upon irradiation with low doses of yellow light. The new photolabile protecting groups presented here complement the photochemical toolbox in therapeutic applications since they will facilitate the delivery of photocages of biologically active compounds into mitochondria.
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Affiliation(s)
- Marta López-Corrales
- Departament de Química Inorgànica i Orgànica, Secció de Química Orgànica, Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona (UB), Martí i Franqués 1-11, E-08028 Barcelona, Spain
| | - Anna Rovira
- Departament de Química Inorgànica i Orgànica, Secció de Química Orgànica, Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona (UB), Martí i Franqués 1-11, E-08028 Barcelona, Spain
| | - Albert Gandioso
- Departament de Química Inorgànica i Orgànica, Secció de Química Orgànica, Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona (UB), Martí i Franqués 1-11, E-08028 Barcelona, Spain
| | - Santi Nonell
- Institut Químic de Sarrià, Universitat Ramon Llull, Vía Augusta 390, E-08017 Barcelona, Spain
| | - Manel Bosch
- Unitat de Microscòpia Òptica Avançada, Centres Científics i Tecnològics (CCiTUB), Universitat de Barcelona (UB), Av. Diagonal 643, E-08028 Barcelona, Spain
| | - Vicente Marchán
- Departament de Química Inorgànica i Orgànica, Secció de Química Orgànica, Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona (UB), Martí i Franqués 1-11, E-08028 Barcelona, Spain
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32
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Ksenofontov AA, Isaev YI, Lukanov MM, Makarov DM, Eventova VA, Khodov IA, Berezin MB. Accurate prediction of 11B NMR chemical shift of BODIPYs via machine learning. Phys Chem Chem Phys 2023; 25:9472-9481. [PMID: 36935644 DOI: 10.1039/d3cp00253e] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
In this article, we present the results of developing a model based on an RFR machine learning method using the ISIDA fragment descriptors for predicting the 11B NMR chemical shift of BODIPYs. The model is freely available at https://ochem.eu/article/146458. The model demonstrates the high quality of predicting the 11B NMR chemical shift (RMSE, 5CV (FINALE training set) = 0.40 ppm, RMSE (TEST set) = 0.14 ppm). In addition, we compared the "cost" and the user-friendliness for calculations using the quantum-chemical model with the DFT/GIAO approach. The 11B NMR chemical shift prediction accuracy (RMSE) of the model considered is more than three times higher and tremendously faster than the DFT/GIAO calculations. As a result, we provide a convenient tool and database that we collected for all researchers, that allows them to predict the 11B NMR chemical shift of boron-containing dyes. We believe that the new model will make it easier for researchers to correctly interpret the 11B NMR chemical shifts experimentally determined and to select more optimal conditions to perform an NMR experiment.
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Affiliation(s)
- Alexander A Ksenofontov
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Akademicheskaya Street, 153045 Ivanovo, Russia.
| | - Yaroslav I Isaev
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Akademicheskaya Street, 153045 Ivanovo, Russia. .,Ivanovo State University of Chemistry and Technology, 7, Sheremetevskiy Avenue, Ivanovo 153000, Russia
| | - Michail M Lukanov
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Akademicheskaya Street, 153045 Ivanovo, Russia.
| | - Dmitry M Makarov
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Akademicheskaya Street, 153045 Ivanovo, Russia.
| | - Varvara A Eventova
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Akademicheskaya Street, 153045 Ivanovo, Russia. .,Ivanovo State University of Chemistry and Technology, 7, Sheremetevskiy Avenue, Ivanovo 153000, Russia
| | - Ilya A Khodov
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Akademicheskaya Street, 153045 Ivanovo, Russia.
| | - Mechail B Berezin
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Akademicheskaya Street, 153045 Ivanovo, Russia.
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33
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Weber R, Chok K, Junek S, Glaubitz C, Heckel A. Rhodamine-Sensitized Two-Photon Activation of a Red Light-Absorbing BODIPY Photocage. Chemistry 2023; 29:e202300149. [PMID: 36785982 DOI: 10.1002/chem.202300149] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/08/2023] [Accepted: 02/13/2023] [Indexed: 02/15/2023]
Abstract
Two-photon (2P) activatable probes are of high value in biological and medical chemistry since near infrared (NIR) light can penetrate deeply even in blood-perfused tissue and due to the intrinsic three-dimensional activation properties. Designing two-photon chromophores is challenging. However, the two-photon absorption qualities of a photocage can be improved with an intramolecular sensitizer, which transfers the absorbed light onto the cage. We herein present the synthesis and photophysical characterization of a 2P-sensitive uncaging dyad based on rhodamine 101 as donor fluorophore and a redshifted BODIPY as acceptor photocage. Liberation of p-nitroaniline (PNA) upon one-photon photolysis was confirmed by HPLC analysis. The photoreaction was found to be accompanied by a considerable change of the fluorescence properties of the chromophores. The possibility of a fluorescent read-out enabled the detection of two-photon induced uncaging by confocal fluorescence microscopy.
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Affiliation(s)
- Rebekka Weber
- Goethe University Frankfurt, Institute for Organic Chemistry and Chemical Biology, Max-von-Laue-Str. 7, 60438, Frankfurt am Main, Germany
| | - Kerby Chok
- Goethe University Frankfurt, Institute for Biophysical Chemistry, Max-von-Laue-Str. 9, 60438, Frankfurt am Main, Germany
| | - Stephan Junek
- Max Planck Institute for Brain Research, Max-von-Laue-Str. 4, 60438, Frankfurt am Main, Germany
| | - Clemens Glaubitz
- Goethe University Frankfurt, Institute for Biophysical Chemistry, Max-von-Laue-Str. 9, 60438, Frankfurt am Main, Germany
| | - Alexander Heckel
- Goethe University Frankfurt, Institute for Organic Chemistry and Chemical Biology, Max-von-Laue-Str. 7, 60438, Frankfurt am Main, Germany
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34
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Egyed A, Németh K, Molnár TÁ, Kállay M, Kele P, Bojtár M. Turning Red without Feeling Embarrassed─Xanthenium-Based Photocages for Red-Light-Activated Phototherapeutics. J Am Chem Soc 2023; 145:4026-4034. [PMID: 36752773 PMCID: PMC9951246 DOI: 10.1021/jacs.2c11499] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Indexed: 02/09/2023]
Abstract
Herein, we present high-yielding, concise access to a set of xanthenium-derived, water-soluble, low-molecular-weight photocages allowing light-controlled cargo release in the green to red region. Very importantly, these new photocages allow installation of various payloads through ester, carbamate, or carbonate linkages even at the last stage of the synthesis. Payloads were uncaged with high efficiency upon green, orange, or red light irradiation, leading to the release of carboxylic acids, phenols, and amines. The near-ideal properties of a carboxanthenium derivative were further evaluated in the context of light-controlled drug release using a camptothecin-derived chemotherapeutic drug, SN38. Notably, the caged drug showed orders of magnitude lower efficiency in cellulo, which was reinstated after red light irradiation. The presented photocages offer properties that facilitate the translation of photoactivated chemotherapy toward clinical applications.
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Affiliation(s)
- Alexandra Egyed
- Chemical
Biology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Magyar tudósok krt. 2., H-1117 Budapest, Hungary
- Hevesy
György PhD School of Chemistry, Eötvös
Loránd University, Pázmány Péter sétány 1/a., H-1117 Budapest, Hungary
| | - Krisztina Németh
- Chemical
Biology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Magyar tudósok krt. 2., H-1117 Budapest, Hungary
| | - Tibor Á. Molnár
- Chemical
Biology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Magyar tudósok krt. 2., H-1117 Budapest, Hungary
| | - Mihály Kállay
- Department
of Physical Chemistry and Materials Science, Faculty of Chemical Technology
and Biotechnology, Budapest University of
Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary
- ELKH-BME
Quantum Chemistry Research Group, Műegyetem rkp. 3., H-1111 Budapest, Hungary
- MTA-BME
Lendület Quantum Chemistry Research Group, Műegyetem rkp. 3., H-1111 Budapest, Hungary
| | - Péter Kele
- Chemical
Biology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Magyar tudósok krt. 2., H-1117 Budapest, Hungary
| | - Márton Bojtár
- Chemical
Biology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Magyar tudósok krt. 2., H-1117 Budapest, Hungary
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35
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Digby EM, Ayan S, Shrestha P, Gehrmann EJ, Winter AH, Beharry AA. Photocaged DNA-Binding Photosensitizer Enables Photocontrol of Nuclear Entry for Dual-Targeted Photodynamic Therapy. J Med Chem 2022; 65:16679-16694. [PMID: 36480920 DOI: 10.1021/acs.jmedchem.2c01504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Photodynamic therapy (PDT) is a clinically approved cancer treatment that requires a photosensitizer (PS), light, and molecular oxygen─a combination which produces reactive oxygen species (ROS) that can induce cancer cell death. To enhance the efficacy of PDT, dual-targeted strategies have been explored where two photosensitizers are administered and localize to different subcellular organelles. To date, a single small-molecule conjugate for dual-targeted PDT with light-controlled nuclear localization has not been achieved. We designed a probe composed of a DNA-binding PS (Br-DAPI) and a photosensitizing photocage (WinterGreen). Illumination with 480 nm light removes WinterGreen from the conjugate and produces singlet oxygen mainly in the cytosol, while Br-DAPI localizes to nuclei, binds DNA, and produces ROS using one- or two-photon illumination. We observe synergistic photocytotoxicity in MCF7 breast cancer cells, and a reduction in size of three-dimensional (3D) tumor spheroids, demonstrating that nuclear/cytosolic photosensitization using a single agent can enhance PDT efficacy.
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Affiliation(s)
- Elyse M Digby
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, Mississauga, OntarioL5L 1C6, Canada
| | - Seylan Ayan
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, Mississauga, OntarioL5L 1C6, Canada
| | - Pradeep Shrestha
- Department of Chemistry, Iowa State University, Ames, Iowa50011, United States
| | | | - Arthur H Winter
- Department of Chemistry, Iowa State University, Ames, Iowa50011, United States
| | - Andrew A Beharry
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, Mississauga, OntarioL5L 1C6, Canada
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36
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Chung KY, Halwachs KN, Lu P, Sun K, Silva HA, Rosales AM, Page ZA. Rapid hydrogel formation via tandem visible light photouncaging and bioorthogonal ligation. CELL REPORTS. PHYSICAL SCIENCE 2022; 3:101185. [PMID: 37496708 PMCID: PMC10370463 DOI: 10.1016/j.xcrp.2022.101185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
The formation of benign polymer scaffolds in water using green-light-reactive photocages is described. These efforts pave an avenue toward the fabrication of synthetic scaffolds that can facilitate the study of cellular events for disease diagnosis and treatment. First, a series of boron dipyrromethene (BODIPY) photocages with nitrogen-containing nucleophiles were examined to determine structure-reactivity relationships, which resulted in a >1,000× increase in uncaging yield. Subsequently, photoinduced hydrogel formation in 90 wt % water was accomplished via biorthogonal carbonyl condensation using hydrophilic polymer scaffolds separately containing BODIPY photocages and ortho-phthalaldehyde (OPA) moieties. Spatiotemporal control is demonstrated with light on/off experiments to modulate gel stiffness and masking to provide <100 μm features. Biocompatability of the method was shown through pre-/post-crosslinking cell viability studies. Short term, these studies are anticipated to guide translation to emergent additive manufacturing technology, which, longer term, will enable the development of 3D cell cultures for tissue engineering applications.
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Affiliation(s)
- Kun-You Chung
- Department of Chemistry, The University of Texas at Austin; Austin, TX 78712, USA
| | - Kathleen N. Halwachs
- McKetta Department of Chemical Engineering, The University of Texas at Austin; Austin, TX 78712, USA
| | - Pengtao Lu
- Department of Chemistry, The University of Texas at Austin; Austin, TX 78712, USA
| | - Kaihong Sun
- Department of Chemistry, The University of Texas at Austin; Austin, TX 78712, USA
| | - Hope A. Silva
- Department of Chemistry, The University of Texas at Austin; Austin, TX 78712, USA
| | - Adrianne M. Rosales
- McKetta Department of Chemical Engineering, The University of Texas at Austin; Austin, TX 78712, USA
| | - Zachariah A. Page
- Department of Chemistry, The University of Texas at Austin; Austin, TX 78712, USA
- Lead contact
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Jia S, Sletten EM. Spatiotemporal Control of Biology: Synthetic Photochemistry Toolbox with Far-Red and Near-Infrared Light. ACS Chem Biol 2022; 17:3255-3269. [PMID: 34516095 PMCID: PMC8918031 DOI: 10.1021/acschembio.1c00518] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The complex network of naturally occurring biological pathways motivates the development of new synthetic molecules to perturb and/or detect these processes for fundamental research and clinical applications. In this context, photochemical tools have emerged as an approach to control the activity of drug or probe molecules at high temporal and spatial resolutions. Traditional photochemical tools, particularly photolabile protecting groups (photocages) and photoswitches, rely on high-energy UV light that is only applicable to cells or transparent model animals. More recently, such designs have evolved into the visible and near-infrared regions with deeper tissue penetration, enabling photocontrol to study biology in tissue and model animal contexts. This Review highlights recent developments in synthetic far-red and near-infrared photocages and photoswitches and their current and potential applications at the interface of chemistry and biology.
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Affiliation(s)
- Shang Jia
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Ellen M Sletten
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
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38
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Xiong H, Xu Y, Kim B, Rha H, Zhang B, Li M, Yang GF, Kim JS. Photo-controllable biochemistry: Exploiting the photocages in phototherapeutic window. Chem 2022. [DOI: 10.1016/j.chempr.2022.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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39
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Shrestha P, Mukhopadhyay A, Dissanayake KC, Winter AH. Efficiency of Functional Group Caging with Second-Generation Green- and Red-Light-Labile BODIPY Photoremovable Protecting Groups. J Org Chem 2022; 87:14334-14341. [PMID: 36255274 DOI: 10.1021/acs.joc.2c01781] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BODIPY-based photocages release substrates by excitation with wavelengths in the visible to near-IR regions. The recent development of more efficient BODIPY photocages spurred us to evaluate the scope and efficiency of these second-generation boron-methylated green-light and red-light-absorbing BODIPY photocages. Here, we show that these more photosensitive photocages release amine, alcohol, phenol, phosphate, halides, and carboxylic acid derivatives with much higher quantum yields than first-generation BODIPY photocages and excellent chemical yields. Chemical yields are near-quantitative for the release of all functional groups except the photorelease of amines, which react with concomitantly photogenerated singlet oxygen. In these cases, high chemical yields for photoreleased amines are restored by irradiation under an inert atmosphere. The photorelease quantum yield has a weak relationship with the leaving group pKa of the green-absorbing BODIPY photocages but little relationship with the red-absorbing derivatives, suggesting that factors other than leaving group quality impact the quantum yield. For the photorelease of alcohols, in all cases a carbonate linker (that loses CO2 upon photorelease) significantly increases both the quantum yield and the chemical yield compared to those for direct photorelease via the ether.
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Affiliation(s)
- Pradeep Shrestha
- Department of Chemistry, Iowa State University, 1608 Gilman Hall, Ames, Iowa50010, United States
| | - Atreyee Mukhopadhyay
- Department of Chemistry, Iowa State University, 1608 Gilman Hall, Ames, Iowa50010, United States
| | - Komadhie C Dissanayake
- Department of Chemistry, Iowa State University, 1608 Gilman Hall, Ames, Iowa50010, United States
| | - Arthur H Winter
- Department of Chemistry, Iowa State University, 1608 Gilman Hall, Ames, Iowa50010, United States
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41
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Caged-carvedilol as a new tool for visible-light photopharmacology of β-adrenoceptors in native tissues. iScience 2022; 25:105128. [PMID: 36185381 PMCID: PMC9515591 DOI: 10.1016/j.isci.2022.105128] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 07/08/2022] [Accepted: 09/09/2022] [Indexed: 11/09/2022] Open
Abstract
Adrenoceptors are G protein-coupled receptors involved in a large variety of physiological processes, also under pathological conditions. This is due in large part to their ubiquitous expression in the body exerting numerous essential functions. Therefore, the possibility to control their activity with high spatial and temporal precision would constitute a valuable research tool. In this study, we present a caged version of the approved non-selective β-adrenoceptor antagonist carvedilol, synthesized by alkylation of its secondary amine with a coumarin derivative. Introducing this photo-removable group abolished carvedilol physiological effects in cell cultures, mouse isolated perfused hearts and living zebrafish larvae. Only after visible light application, carvedilol was released and the different physiological systems were pharmacologically modulated in a similar manner as the control drug. This research provides a new photopharmacological tool for a wide range of research applications that may help in the development of future precise therapies. We report a diffusible caged antagonist based on the beta blocker carvedilol (C-C) Carvedilol release from C-C is produced by light on the visible range (405 nm) Light-dependent effects are assessed in cells, mice hearts, and zebrafish larvae Physiological processes can be regulated by C-C and light (heart rate and behavior)
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42
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Leichnitz S, Dissanayake KC, Winter AH, Seeberger PH. Photo-labile BODIPY protecting groups for glycan synthesis. Chem Commun (Camb) 2022; 58:10556-10559. [PMID: 36047322 DOI: 10.1039/d2cc03851j] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Protective groups that can be selectively removed under mild conditions are an essential aspect of carbohydrate chemistry. Groups that can be selectively removed by visible light are particularly attractive because carbohydrates are transparent to visible light. Here, different BODIPY protecting groups were explored for their utility during glycan synthesis. A BODIPY group bearing a boron difluoride unit is stable during glycosylations but can be cleaved with green light as illustrated by the assembly of a trisaccharide.
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Affiliation(s)
- Sabrina Leichnitz
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam, Germany. .,Institute of Chemistry and Biochemistry, Freie Universität Berlin, 14195 Berlin, Germany
| | | | - Arthur H Winter
- Department of Chemistry, Iowa State University, Ames, Iowa 50014, USA.
| | - Peter H Seeberger
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam, Germany. .,Institute of Chemistry and Biochemistry, Freie Universität Berlin, 14195 Berlin, Germany
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Zlatić K, Bogomolec M, Cindrić M, Uzelac L, Basarić N. Synthesis, photophysical properties, anti-Kasha photochemical reactivity and biological activity of vinyl- and alkynyl-BODIPY derivatives. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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44
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Liu L, Zhang D, Johnson M, Devaraj NK. Light-activated tetrazines enable precision live-cell bioorthogonal chemistry. Nat Chem 2022; 14:1078-1085. [PMID: 35788560 PMCID: PMC10198265 DOI: 10.1038/s41557-022-00963-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 05/03/2022] [Indexed: 02/07/2023]
Abstract
Bioorthogonal cycloaddition reactions between tetrazines and strained dienophiles are widely used for protein, lipid and glycan labelling because of their extremely rapid kinetics. However, controlling this chemistry in the presence of living mammalian cells with a high degree of spatial and temporal precision remains a challenge. Here we demonstrate a versatile approach to light-activated formation of tetrazines from photocaged dihydrotetrazines. Photouncaging, followed by spontaneous transformation to reactive tetrazine, enables live-cell spatiotemporal control of rapid bioorthogonal cycloaddition with dienophiles such as trans-cyclooctenes. Photocaged dihydrotetrazines are stable in conditions that normally degrade tetrazines, enabling efficient early-stage incorporation of bioorthogonal handles into biomolecules such as peptides. Photocaged dihydrotetrazines allow the use of non-toxic light to trigger tetrazine ligations on living mammalian cells. By tagging reactive phospholipids with fluorophores, we demonstrate modification of HeLa cell membranes with single-cell spatial resolution. Finally, we show that photo-triggered therapy is possible by coupling tetrazine photoactivation with strategies that release prodrugs in response to tetrazine ligation.
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Affiliation(s)
- Luping Liu
- Department of Chemistry and Biochemistry, University of California, San Diego, CA, USA
| | - Dongyang Zhang
- Department of Chemistry and Biochemistry, University of California, San Diego, CA, USA
| | - Mai Johnson
- Department of Chemistry and Biochemistry, University of California, San Diego, CA, USA
| | - Neal K Devaraj
- Department of Chemistry and Biochemistry, University of California, San Diego, CA, USA.
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45
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Red‐Shifted Water‐Soluble BODIPY Photocages for Visualisation and Controllable Cellular Delivery of Signaling Lipids. Angew Chem Int Ed Engl 2022; 61:e202205855. [DOI: 10.1002/anie.202205855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Indexed: 11/07/2022]
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46
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Janeková H, Russo M, Ziegler U, Štacko P. Photouncaging of Carboxylic Acids from Cyanine Dyes with Near‐Infrared Light**. Angew Chem Int Ed Engl 2022; 61:e202204391. [PMID: 35578980 PMCID: PMC9542589 DOI: 10.1002/anie.202204391] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Indexed: 11/13/2022]
Abstract
Near‐infrared light (NIR; 650–900 nm) offers unparalleled advantages as a biocompatible stimulus. The development of photocages that operate in this region represents a fundamental challenge due to the low energy of the excitation light. Herein, we repurpose cyanine dyes into photocages that are available on a multigram scale in three steps and efficiently release carboxylic acids in aqueous media upon irradiation with NIR light up to 820 nm. The photouncaging process is examined using several techniques, providing evidence that it proceeds via photooxidative pathway. We demonstrate the practical utility in live HeLa cells by delivery and release of the carboxylic acid cargo, that was otherwise not uptaken by cells in its free form. In combination with modularity of the cyanine scaffold, the realization of these accessible photocages will fully unleash the potential of the emerging field of NIR‐photoactivation and facilitate its widespread adoption outside the photochemistry community.
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Affiliation(s)
- Hana Janeková
- Department of Chemistry University of Zurich Wintherthurerstrasse 190 8057 Zurich Switzerland
| | - Marina Russo
- Department of Chemistry University of Zurich Wintherthurerstrasse 190 8057 Zurich Switzerland
| | - Urs Ziegler
- Center for Microscopy and Image Analysis University of Zurich Wintherthurerstrasse 190 8057 Zurich Switzerland
| | - Peter Štacko
- Department of Chemistry University of Zurich Wintherthurerstrasse 190 8057 Zurich Switzerland
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47
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Alachouzos G, Schulte AM, Mondal A, Szymanski W, Feringa BL. Computational Design, Synthesis, and Photochemistry of Cy7-PPG, an Efficient NIR-Activated Photolabile Protecting Group for Therapeutic Applications. Angew Chem Int Ed Engl 2022; 61:e202201308. [PMID: 35181979 PMCID: PMC9311213 DOI: 10.1002/anie.202201308] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Indexed: 12/14/2022]
Abstract
Photolabile Protecting Groups (PPGs) are molecular tools used, for example, in photopharmacology for the activation of drugs with light, enabling spatiotemporal control over their potency. Yet, red-shifting of PPG activation wavelengths into the NIR range, which penetrates the deepest in tissue, has often yielded inefficient or insoluble molecules, hindering the use of PPGs in the clinic. To solve this problem, we report herein a novel concept in PPG design, by transforming clinically-applied NIR-dyes with suitable molecular orbital configurations into new NIR-PPGs using computational approaches. Using this method, we demonstrate how Cy7, a class of NIR dyes possessing ideal properties (NIR-absorption, high molecular absorptivity, excellent aqueous solubility) can be successfully converted into Cy7-PPG. We report a facile synthesis towards Cy7-PPG from accessible precursors and confirm its excellent properties as the most redshifted oxygen-independent NIR-PPG to date (λmax =746 nm).
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Affiliation(s)
- Georgios Alachouzos
- Centre for Systems Chemistry, Stratingh Institute for ChemistryFaculty for Science and EngineeringUniversity of GroningenNijenborgh 49747 AGGroningenThe Netherlands
| | - Albert M. Schulte
- Centre for Systems Chemistry, Stratingh Institute for ChemistryFaculty for Science and EngineeringUniversity of GroningenNijenborgh 49747 AGGroningenThe Netherlands
| | - Anirban Mondal
- Centre for Systems Chemistry, Stratingh Institute for ChemistryFaculty for Science and EngineeringUniversity of GroningenNijenborgh 49747 AGGroningenThe Netherlands
| | - Wiktor Szymanski
- Department of RadiologyMedical Imaging CenterUniversity Medical Center GroningenUniversity of GroningenHanzeplein 19713 GZGroningenThe Netherlands
| | - Ben L. Feringa
- Centre for Systems Chemistry, Stratingh Institute for ChemistryFaculty for Science and EngineeringUniversity of GroningenNijenborgh 49747 AGGroningenThe Netherlands
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48
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Schulte AM, Alachouzos G, Szymański W, Feringa BL. Strategy for Engineering High Photolysis Efficiency of Photocleavable Protecting Groups through Cation Stabilization. J Am Chem Soc 2022; 144:12421-12430. [PMID: 35775744 PMCID: PMC9284546 DOI: 10.1021/jacs.2c04262] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
![]()
Photolabile protecting
groups (PPGs) enable the precise activation
of molecular function with light in many research areas, such as photopharmacology,
where remote spatiotemporal control over the release of a molecule
is needed. The design and application of PPGs in recent years have
particularly focused on the development of molecules with high molar
absorptivity at long irradiation wavelengths. However, a crucial parameter,
which is pivotal to the efficiency of uncaging and which has until
now proven highly challenging to improve, is the photolysis quantum
yield (QY). Here, we describe a novel and general approach to greatly
increase the photolysis QY of heterolytic PPGs through stabilization
of an intermediate chromophore cation. When applied to coumarin PPGs,
our strategy resulted in systems possessing an up to a 35-fold increase
in QY and a convenient fluorescent readout during their uncaging,
all while requiring the same number of synthetic steps for their preparation
as the usual coumarin systems. We demonstrate that the same QY engineering
strategy applies to different photolysis payloads and even different
classes of PPGs. Furthermore, analysis of the DFT-calculated energy
barriers in the first singlet excited state reveals valuable insights
into the important factors that determine photolysis efficiency. The
strategy reported herein will enable the development of efficient
PPGs tailored for many applications.
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Affiliation(s)
- Albert M Schulte
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, Faculty for Science and Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Georgios Alachouzos
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, Faculty for Science and Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Wiktor Szymański
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, Faculty for Science and Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.,Department of Radiology, Medical Imaging Center, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - Ben L Feringa
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, Faculty for Science and Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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Kaufmann J, Müller P, Andreadou E, Heckel A. Green‐Light Activatable BODIPY and Coumarin 5’‐Caps for Oligonucleotide Photocaging. Chemistry 2022; 28:e202200477. [PMID: 35420231 PMCID: PMC9322594 DOI: 10.1002/chem.202200477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Indexed: 12/02/2022]
Abstract
We synthesized two green‐light activatable 5’‐caps for oligonucleotides based on the BODIPY and coumarin scaffold. Both bear an alkyne functionality allowing their use in numerous biological applications. They were successfully incorporated in oligonucleotides via solid‐phase synthesis. Copper‐catalyzed alkyne‐azide cycloaddition (CuAAC) using a bisazide photo‐tether gave cyclic oligonucleotides that could be relinearized by activation with green light and were shown to exhibit high stability against exonucleases. Chemical ligation as another example for bioconjugation yielded oligonucleotides with an internal strand break site. Irradiation at 530 nm or 565 nm resulted in complete photolysis of both caging groups.
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Affiliation(s)
- Janik Kaufmann
- Institute for Organic Chemistry and Chemical Biology Goethe University Frankfurt Max-von-Laue-Str. 7 60438 Frankfurt Germany
| | - Patricia Müller
- Institute for Organic Chemistry and Chemical Biology Goethe University Frankfurt Max-von-Laue-Str. 7 60438 Frankfurt Germany
| | - Eleni Andreadou
- Institute for Organic Chemistry and Chemical Biology Goethe University Frankfurt Max-von-Laue-Str. 7 60438 Frankfurt Germany
| | - Alexander Heckel
- Institute for Organic Chemistry and Chemical Biology Goethe University Frankfurt Max-von-Laue-Str. 7 60438 Frankfurt Germany
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Porphyrin as a versatile visible-light-activatable organic/metal hybrid photoremovable protecting group. Nat Commun 2022; 13:3614. [PMID: 35750661 PMCID: PMC9232598 DOI: 10.1038/s41467-022-31288-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 06/03/2022] [Indexed: 11/08/2022] Open
Abstract
Photoremovable protecting groups (PPGs) represent one of the main contemporary implementations of photochemistry in diverse fields of research and practical applications. For the past half century, organic and metal-complex PPGs were considered mutually exclusive classes, each of which provided unique sets of physical and chemical properties thanks to their distinctive structures. Here, we introduce the meso-methylporphyrin group as a prototype hybrid-class PPG that unites traditionally exclusive elements of organic and metal-complex PPGs within a single structure. We show that the porphyrin scaffold allows extensive modularity by functional separation of the metal-binding chromophore and up to four sites of leaving group release. The insertion of metal ions can be used to tune their spectroscopic, photochemical, and biological properties. We provide a detailed description of the photoreaction mechanism studied by steady-state and transient absorption spectroscopies and quantum-chemical calculations. Our approach applied herein could facilitate access to a hitherto untapped chemical space of potential PPG scaffolds.
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