1
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Saletti M, Paolino M, Venditti J, Bonechi C, Giuliani G, Lamponi S, Tassone G, Boccia A, Botta C, Blancafort L, Poggialini F, Vagaggini C, Cappelli A. A Facile Access to Green Fluorescent Albumin Derivatives. Chembiochem 2024; 25:e202300862. [PMID: 38369609 DOI: 10.1002/cbic.202300862] [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: 02/24/2024] [Revised: 01/24/2024] [Accepted: 12/22/2023] [Indexed: 02/20/2024]
Abstract
A Morita-Baylis-Hillman Adduct (MBHA) derivative bearing a triphenylamine moiety was found to react with human serum albumin (HSA) shifting its emission from the blue to the green-yellow thus leading to green fluorescent albumin (GFA) derivatives and enlarging the platform of probes for aggregation-induced fluorescent-based detection techniques. A possible interaction of MBHA derivative 7 with a lipophilic pocket within the HSA structure was suggested by docking studies. DLS experiments showed that the reaction with HSA induce a conformational change of the protein contributing to the aggregation process of GFA derivatives. The results of investigations on the biological properties suggested that GFA retained the ability of binding drug molecules such as warfarin and diazepam. Finally, cytotoxicity evaluation studies suggested that, although the MBHA derivative 7 at 0.1 μg/mL affected the percentage of cell viability in comparison to the negative control, it cannot be considered cytotoxic, whereas at all the other concentrations≥0.5 μg/mL resulted cytotoxic at different extent.
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Affiliation(s)
- Mario Saletti
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018-2022), Università degli Studi di, Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Marco Paolino
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018-2022), Università degli Studi di, Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Jacopo Venditti
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018-2022), Università degli Studi di, Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Claudia Bonechi
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018-2022), Università degli Studi di, Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Germano Giuliani
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018-2022), Università degli Studi di, Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Stefania Lamponi
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018-2022), Università degli Studi di, Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Giusy Tassone
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018-2022), Università degli Studi di, Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Antonella Boccia
- Istituto di Scienze e Tecnologie Chimiche "G. Natta" - SCITEC (CNR), Via A. Corti 12, 20133, Milano, Italy
| | - Chiara Botta
- Istituto di Scienze e Tecnologie Chimiche "G. Natta" - SCITEC (CNR), Via A. Corti 12, 20133, Milano, Italy
| | - Lluís Blancafort
- Institute of Computational Chemistry and Catalysis and Department of Chemistry, University of Girona, C/M. A. Capmany 69, 17003, Girona, Spain
| | - Federica Poggialini
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018-2022), Università degli Studi di, Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Chiara Vagaggini
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018-2022), Università degli Studi di, Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Andrea Cappelli
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018-2022), Università degli Studi di, Siena, Via Aldo Moro 2, 53100, Siena, Italy
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2
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Zhang L, Zhang R, Cong X, He M, Zhao X, Fan J, Peng X, Cui J, Sun W. Near-Infrared Fluorescence Probe for Monoamine Oxidase A with a Large Stokes Shift for Intraoperative Navigation. ACS APPLIED BIO MATERIALS 2024; 7:1115-1124. [PMID: 38194480 DOI: 10.1021/acsabm.3c01038] [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] [Indexed: 01/11/2024]
Abstract
Monoamine oxidase A (MAO-A) is a dimeric flavoprotein that is found in the mitochondrial membrane. Currently, there is a lack of near-infrared fluorescent probes (NIR-FPs) with good specificity and high sensitivity for detecting MAO-A, making it difficult to accurately recognize and image cells in vitro and in vivo. In this study, the NIR-FP DDM-NH2 was designed and synthesized in order to detect MAO-A specifically in live biological systems. The probe comprised two functional components: dicyanoisophosphone as an NIR dye precursor and alanine as a recognition moiety. After identifying MAO-A, the probe exhibited an NIR emission peak at 770 nm with a significant Stokes shift (180 nm), 11-fold response factor, low detection limit of 99.7 nM, and considerably higher affinity toward MAO-A than that toward MAO-B, indicating high sensitivity. In addition, DDM-NH2 was effective when applied to the image-based assessment of MAO-A activity in HeLa cells, zebrafish, and tumor-bearing mice, demonstrating great potential for visualization-based research and MAO-A application in vivo.
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Affiliation(s)
- Linhao Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Rong Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Xinyue Cong
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Maomao He
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Xin Zhao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Jiangli Fan
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
- Ningbo Institute of Dalian University of Technology, Ningbo 315016, China
| | - Xiaojun Peng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Jingnan Cui
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Wen Sun
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
- Ningbo Institute of Dalian University of Technology, Ningbo 315016, China
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3
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Shi L, Sun Z, Richy N, Blanchard-Desce M, Mongin O, Paul F, Paul-Roth CO. Giant Star-shaped meso-substituted Fluorescent Porphyrins with Fluorenyl-containing Arms Designed for Two-photon Oxygen Photosensitization. Chemistry 2023:e202303243. [PMID: 38116883 DOI: 10.1002/chem.202303243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 12/18/2023] [Accepted: 12/19/2023] [Indexed: 12/21/2023]
Abstract
In the continuation of previous studies on carbon-rich meso-tetraarylporphyrins featuring 2,7-fluorene units at their periphery, the effect of changing the peripheral dendritic arms for linear arms on their oxygen-photosensitizing ability, their fluorescence and their two-photon absorption (2PA) properties is now analyzed. Thus, starburst porphyrins possessing up to twenty conjugated fluorenyl units were isolated and studied. More precisely, a series of five new free-base porphyrins featuring fully conjugated arms incorporating an increasing number of fluorenyl groups connected via 1,2-alkenyl spacers were synthesized, along with their Zn(II) complexes. Upon excitation in the arm-centred π-π* absorption band, an efficient energy transfer takes place from the peripheral fluorenyl units to the central porphyrin core, leading to intense red-light emission and oxygen photosensitization by the latter. More interestingly, while the linear optical properties of these porphyrins were only slightly improved compared to those of their dendrimer analogues for photodynamic therapy (PDT) or fluorescence imaging, their 2PA cross-sections were much more significantly boosted, evidencing the key role played by different structures on nonlinear optical properties. Finally, by comparison with other porphyrin-based two-photon photosensitizers reported in the literature, we show that these new "semi-disconnected" starburst systems exhibit a remarkable trade-off between intrinsic 2PA, fluorescence and oxygen photosensitization.
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Affiliation(s)
- Limiao Shi
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000, Rennes, France
| | - Zhipeng Sun
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000, Rennes, France
| | - Nicolas Richy
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000, Rennes, France
| | | | - Olivier Mongin
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000, Rennes, France
| | - Frédéric Paul
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000, Rennes, France
| | - Christine O Paul-Roth
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000, Rennes, France
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4
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Di Nunzio MR, Douhal A. Robust Inclusion Complex of Topotecan Comprised within a Rhodamine-Labeled β-Cyclodextrin: Competing Proton and Energy Transfer Processes. Pharmaceutics 2023; 15:1620. [PMID: 37376069 DOI: 10.3390/pharmaceutics15061620] [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: 03/31/2023] [Revised: 04/19/2023] [Accepted: 05/19/2023] [Indexed: 06/29/2023] Open
Abstract
Monitoring the biological fate of medicaments within the environments of cancer cells is an important challenge which is nowadays the object of intensive studies. In this regard, rhodamine-based supramolecular systems are one of the most suitable probes used in drug delivery thanks to their high emission quantum yield and sensitivity to the environment which helps to track the medicament in real time. In this work, we used steady-state and time-resolved spectroscopy techniques to investigate the dynamics of the anticancer drug, topotecan (TPT), in water (pH ~6.2) in the presence of a rhodamine-labeled methylated β-cyclodextrin (RB-RM-βCD). A stable complex of 1:1 stoichiometry is formed with a Keq value of ~4 × 104 M-1 at room temperature. The fluorescence signal of the caged TPT is reduced due to: (1) the CD confinement effect; and (2) a Förster resonance energy transfer (FRET) process from the trapped drug to the RB-RM-βCD occurring in ~43 ps with 40% efficiency. These findings provide additional knowledge about the spectroscopic and photodynamic interactions between drugs and fluorescent functionalized CDs, and may lead to the design of new fluorescent CD-based host-guest nanosystems with efficient FRET to be used in bioimaging for drug delivery monitoring.
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Affiliation(s)
- Maria Rosaria Di Nunzio
- Departamento de Química Física, Facultad de Ciencias Ambientales y Bioquímica and INAMOL, Universidad de Castilla-La Mancha, Av. Carlos III, s/n, 45071 Toledo, Spain
| | - Abderrazzak Douhal
- Departamento de Química Física, Facultad de Ciencias Ambientales y Bioquímica and INAMOL, Universidad de Castilla-La Mancha, Av. Carlos III, s/n, 45071 Toledo, Spain
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5
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Chinoy ZS, Friscourt F. Expanding the Strain‐Promoted 1,3‐Dipolar Cycloaddition Arsenal for a More Selective Bioorthogonal Labeling in Living Cells. Isr J Chem 2022. [DOI: 10.1002/ijch.202200055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Zoeisha S. Chinoy
- Institut Européen de Chimie et Biologie Université de Bordeaux 2 rue Robert Escarpit 33607 Pessac France
- Institut des Sciences Moléculaires CNRS UMR5255 33405 Talence France
| | - Frédéric Friscourt
- Institut Européen de Chimie et Biologie Université de Bordeaux 2 rue Robert Escarpit 33607 Pessac France
- Institut des Sciences Moléculaires CNRS UMR5255 33405 Talence France
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6
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van Geest EP, Götzfried SK, Klein DM, Salitra N, Popal S, Husiev Y, Van der Griend CJ, Zhou X, Siegler MA, Schneider GF, Bonnet S. A
Lock‐and‐Kill
Anticancer Photoactivated Chemotherapy Agent
†. Photochem Photobiol 2022; 99:777-786. [PMID: 36315051 DOI: 10.1111/php.13738] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 10/20/2022] [Indexed: 12/03/2022]
Abstract
Photosubstitutionally active ruthenium complexes show high potential as prodrugs for the photoactivated chemotherapy (PACT) treatment of tumors. One of the problems in PACT is that the localization of the ruthenium compound is hard to trace. Here, a ruthenium PACT prodrug, [Ru(3)(biq)(STF-31)](PF6 )2 (where 3 = 3-(([2,2':6',2″-ter- pyridin]-4'-yloxy)propyl-4-(pyren-1-yl)butanoate) and biq = 2,2'-biquinoline), has been prepared, in which a pyrene tracker is attached via an ester bond. The proximity between the fluorophore and the ruthenium center leads to fluorescence quenching. Upon intracellular hydrolysis of the ester linkage, however, the fluorescence of the pyrene moiety is recovered, thus demonstrating prodrug cellular uptake. Further light irradiation of this molecule liberates by photosubstitution STF-31, a known cytotoxic nicotinamide phosphoribosyltransferase (NAMPT) inhibitor, as well as singlet oxygen via excitation of the free pyrene chromophore. The dark and light cytotoxicity of the prodrug, embedded in liposomes, as well as the appearance of blue emission upon uptake, were evaluated in A375 human skin melanoma cells. The cytotoxicity of the liposome-embedded prodrug was indeed increased by light irradiation. This work realizes an in vitro proof-of-concept of the lock-and-kill principle, which may ultimately be used to design strategies aimed at knowing where and when light irradiation should be realized in vivo.
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Affiliation(s)
| | | | - David M. Klein
- Leiden Institute of Chemistry Leiden University Leiden The Netherlands
| | - Nadiya Salitra
- Leiden Institute of Chemistry Leiden University Leiden The Netherlands
| | - Sorraya Popal
- Leiden Institute of Chemistry Leiden University Leiden The Netherlands
| | - Yurii Husiev
- Leiden Institute of Chemistry Leiden University Leiden The Netherlands
| | | | - Xuequan Zhou
- Leiden Institute of Chemistry Leiden University Leiden The Netherlands
| | | | | | - Sylvestre Bonnet
- Leiden Institute of Chemistry Leiden University Leiden The Netherlands
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7
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Liu J, Li K, Xue P, Xu J. Cell-permeable fluorescent indicator for imaging formaldehyde activity in living systems. Anal Biochem 2022; 652:114749. [PMID: 35636460 DOI: 10.1016/j.ab.2022.114749] [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: 03/23/2022] [Revised: 05/13/2022] [Accepted: 05/20/2022] [Indexed: 11/18/2022]
Abstract
Formaldehyde (FA), as a reactive signaling molecule, plays an important role in living systems through a diverse array of cellular pathways. However, no systematic investigation for detection and imaging of FA by rendering cells transiently permeable has been reported yet. Specifically, we developed a new cell-permeable fluorescence probe functionality that was enhanced cellular entry efficiency and well retained intracellularly after activation for visualizing endogenous FA changes. Moreover, a smart "multi-lock system -key-and-lock" strategy,which have provoked a starting point for the use of probe and related biochemical tools to monitor FA in lysosomes. The versatile "latent" fluorophore that can undergo a subsequent self-immolative spacer for interrogating the roles and functions of FA in living systems as well as related biomedical applications.
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Affiliation(s)
- Jun Liu
- College of Chemistry and Chemical Engineering, Hexi University, Zhangye City, 734000, Gansu Province, PR China.
| | - Kaipeng Li
- College of Chemistry and Chemical Engineering, Hexi University, Zhangye City, 734000, Gansu Province, PR China
| | - Peng Xue
- College of Chemistry and Chemical Engineering, Hexi University, Zhangye City, 734000, Gansu Province, PR China
| | - Jinyi Xu
- College of Chemistry and Chemical Engineering, Hexi University, Zhangye City, 734000, Gansu Province, PR China
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8
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Hameed DS, Ovaa H, van der Heden van Noort GJ, Sapmaz A. Inhibiting UCH-L5: Rational Design of a Cyclic Ubiquitin-Based Peptide Inhibitor. Front Mol Biosci 2022; 9:866467. [PMID: 35720124 PMCID: PMC9204298 DOI: 10.3389/fmolb.2022.866467] [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: 01/31/2022] [Accepted: 04/29/2022] [Indexed: 11/13/2022] Open
Abstract
The ubiquitin-proteasome system is an essential regulator of many cellular processes including controlling protein homeostasis. The degradation of proteins by the multi-subunit proteasome complex is tightly regulated through a series of checkpoints, amongst which are a set of deubiquitinating proteases (DUBs). The proteasome-associated DUBs, UCH-L5 (Ubiquitin carboxyl-terminal hydrolase isozyme L5) and USP14 (Ubiquitin-specific protease 14), and the integral-DUB in the proteasome, Rpn11, is known to regulate proteasomal degradation by deubiquitination of distinct substrates. Although selective inhibitors for USP14 and Rpn11 have been recently developed, there are no known inhibitors that selectively bind to UCH-L5. The X-ray structure of the Ubiquitin (Ub) bound to UCH-L5 shows a β-sheet hairpin in Ub that contains a crucial hydrophobic patch involved in the interaction with UCH-L5. Herein, we designed and developed both a Ub sequence-based linear- and cyclic- β-sheet hairpin peptide that was found to preferably inhibit UCH-L5. We show that these peptides have low micromolar IC50 values and the cyclic peptide competes with the activity-based UbVME (Ubiquitin-Vinyl-Methyl-Ester) probe for UCH-L5, binding in a concentration-dependent manner. We further establish the selectivity profile of the cyclic peptide for UCH-L5 compared to other members of the UCH-DUB family and other cysteine DUBs in cell lysate. Furthermore, the cyclic peptide infiltrated cells resulting in the accumulation of polyUb chains, and was found to be non-toxic at the concentrations used here. Taken together, our data suggest that the cyclic peptide permeates the cell membrane, inhibits UCH-L5 by possibly blocking its deubiquitinating function, and contributes to the accumulation of polyubiquitinated substrates. The implications of inhibiting UCH-L5 in the context of the 26S proteasome render it an attractive candidate for further development as a potential selective inhibitor for therapeutic purposes.
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Affiliation(s)
| | | | | | - Aysegul Sapmaz
- *Correspondence: Gerbrand J. van der Heden van Noort, ; Aysegul Sapmaz,
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9
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Hetrick KJ, Raines RT. Assessing and utilizing esterase specificity in antimicrobial prodrug development. Methods Enzymol 2022; 664:199-220. [DOI: 10.1016/bs.mie.2021.11.008] [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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10
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Wang L, Wang S, Tang J, Espinoza VB, Loredo A, Tian Z, Weisman RB, Xiao H. Oxime as a general photocage for the design of visible light photo-activatable fluorophores. Chem Sci 2021; 12:15572-15580. [PMID: 35003586 PMCID: PMC8654061 DOI: 10.1039/d1sc05351e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 11/21/2021] [Indexed: 12/18/2022] Open
Abstract
Photoactivatable fluorophores have been widely used for tracking molecular and cellular dynamics with subdiffraction resolution. In this work, we have prepared a series of photoactivatable probes using the oxime moiety as a new class of photolabile caging group in which the photoactivation process is mediated by a highly efficient photodeoximation reaction. Incorporation of the oxime caging group into fluorophores results in loss of fluorescence. Upon light irradiation in the presence of air, the oxime-caged fluorophores are oxidized to their carbonyl derivatives, restoring strong fluorophore fluorescence. To demonstrate the utility of these oxime-caged fluorophores, we have created probes that target different organelles for live-cell confocal imaging. We also carried out photoactivated localization microscopy (PALM) imaging under physiological conditions using low-power light activation in the absence of cytotoxic additives. Our studies show that oximes represent a new class of visible-light photocages that can be widely used for cellular imaging, sensing, and photo-controlled molecular release.
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Affiliation(s)
- Lushun Wang
- Department of Chemistry, Rice University 6100 Main Street Houston Texas 77005 USA
| | - Shichao Wang
- Department of Chemistry, Rice University 6100 Main Street Houston Texas 77005 USA
| | - Juan Tang
- Department of Chemistry, Rice University 6100 Main Street Houston Texas 77005 USA
| | - Vanessa B Espinoza
- Department of Chemistry, Rice University 6100 Main Street Houston Texas 77005 USA
| | - Axel Loredo
- Department of Chemistry, Rice University 6100 Main Street Houston Texas 77005 USA
| | - Zeru Tian
- Department of Chemistry, Rice University 6100 Main Street Houston Texas 77005 USA
| | - R Bruce Weisman
- Department of Chemistry, Rice University 6100 Main Street Houston Texas 77005 USA
| | - Han Xiao
- Department of Chemistry, Rice University 6100 Main Street Houston Texas 77005 USA
- Department of Biosciences, Rice University 6100 Main Street Houston Texas 77005 USA
- Department of Bioengineering, Rice University 6100 Main Street Houston Texas 77005 USA
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11
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Jimidar CC, Grunenberg J, Karge B, Fuchs HLS, Brönstrup M, Klahn P. Masked Amino Trimethyl Lock (H 2 N-TML) Systems: New Molecular Entities for the Development of Turn-On Fluorophores and Their Application in Hydrogen Sulfide (H 2 S) Imaging in Human Cells. Chemistry 2021; 28:e202103525. [PMID: 34713944 PMCID: PMC9299139 DOI: 10.1002/chem.202103525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Indexed: 11/11/2022]
Abstract
Masked trimethyl lock (TML) systems as molecular moieties enabling the bioresponsive release of compounds or dyes in a controlled temporal and spatial manner have been widely applied for the development of drug conjugates, prodrugs or molecular imaging tools. Herein, we report the development of a novel amino trimethyl lock (H2 N-TML) system as an auto-immolative molecular entity for the release of fluorophores. We designed Cou-TML-N3 and MURh-TML-N3 , two azide-masked turn-on fluorophores. The latter was demonstrated to selectively release fluorescent MURh in the presence of physiological concentrations of the redox-signaling molecule H2 S in vitro and was successfully applied to image H2 S in human cells.
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Affiliation(s)
- Claire Cheyenne Jimidar
- Institute of Organic Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106, Braunschweig, Germany
| | - Jörg Grunenberg
- Institute of Organic Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106, Braunschweig, Germany
| | - Bianka Karge
- Department Chemical Biology, Helmholtz Center for Infection Research, Inhoffenstraße 7, 38124, Braunschweig, Germany.,German Center for Infection Research (DZIF) -, Partner site Braunschweig-Hannover, Germany
| | - Hazel Leanne Sarah Fuchs
- Department Chemical Biology, Helmholtz Center for Infection Research, Inhoffenstraße 7, 38124, Braunschweig, Germany.,German Center for Infection Research (DZIF) -, Partner site Braunschweig-Hannover, Germany
| | - Mark Brönstrup
- Department Chemical Biology, Helmholtz Center for Infection Research, Inhoffenstraße 7, 38124, Braunschweig, Germany.,German Center for Infection Research (DZIF) -, Partner site Braunschweig-Hannover, Germany
| | - Philipp Klahn
- Institute of Organic Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106, Braunschweig, Germany
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12
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Chen L, Wu X, Yu H, Wu L, Wang Q, Zhang J, Liu X, Li Z, Yang XF. An Edaravone-Guided Design of a Rhodamine-Based Turn-on Fluorescent Probe for Detecting Hydroxyl Radicals in Living Systems. Anal Chem 2021; 93:14343-14350. [PMID: 34643369 DOI: 10.1021/acs.analchem.1c03877] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The hydroxyl radical (·OH), one of the reactive oxygen species (ROS) in biosystems, is found to be involved in many physiological and pathological processes. However, specifically detecting endogenous ·OH remains an outstanding challenge owing to the high reactivity and short lifetime of this radical. Herein, inspired by the scavenging mechanism of a neuroprotective drug edaravone toward ·OH, we developed a new ·OH-specific fluorescent probe RH-EDA. RH-EDA is a hybrid of rhodamine and edaravone and exploits a ·OH-specific 3-methyl-pyrazolone moiety to control its fluorescence behavior. RH-EDA itself is almost nonfluorescent in physiological conditions, which was attributed to the formation of a twisted intramolecular charge transfer (TICT) state upon photoexcitation and the acylation of its rhodamine nitrogen at the 3' position. However, upon a treatment with ·OH, its edaravone subunit was converted to the corresponding 2-oxo-3-(phenylhydrazono)-butanoic acid (OPB) derivative (to afford RH-OPB), thus leading to a significant fluorescence increase (ca. 195-fold). RH-EDA shows a high sensitivity and selectivity to ·OH without interference from other ROS. RH-EDA has been utilized for imaging endogenous ·OH production in living cells and zebrafishes under different stimuli. Moreover, RH-EDA allows a high-contrast discrimination of cancer cells from normal ones by monitoring their different ·OH levels upon stimulation with β-Lapachone (β-Lap), an effective ROS-generating anticancer therapeutic agent. The present study provides a promising methodology for the construction of probes through a drug-guided approach.
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Affiliation(s)
- Liqin Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Xia Wu
- Singapore University of Technology and Design, 8 Somapah Road, Singapore 487372, Singapore
| | - Hanjie Yu
- College of Life Sciences, Northwest University, Xi'an 710069, P. R. China
| | - Lei Wu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Qin Wang
- School of Chemistry and Environment Science, Shaanxi University of Technology, Hanzhong 723000, Shaanxi, P. R. China
| | - Jianjian Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Xiaogang Liu
- Singapore University of Technology and Design, 8 Somapah Road, Singapore 487372, Singapore
| | - Zheng Li
- College of Life Sciences, Northwest University, Xi'an 710069, P. R. China
| | - Xiao-Feng Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
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13
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Dai D, Yang J, Yang YW. Supramolecular Assembly with Aggregation-Induced Emission Property for Sensing and Detection. Chemistry 2021; 28:e202103185. [PMID: 34622985 DOI: 10.1002/chem.202103185] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Indexed: 12/31/2022]
Abstract
The fabrication of new supramolecular materials for real-time detection of analytes including ions, organic pollutants, gases, biomolecules, and drugs is of pivotal importance in industrial manufacture, clinical treatment, and environmental remediation. Incorporating fluorescent molecules with distinct aggregation-induced emission (AIE) effects into supramolecular assemblies has received much attention over the past two decades, owing to the remarkable performance of the AIE-active supramolecular materials in sensing and detection. In this minireview, we summarize the recent progress of superior detection systems on the basis of supramolecular assemblies accompanied with AIE features. We envision that this minireview will be helpful and timely for relevant researchers to stimulate new thinking for constructing new AIE-based supramolecular materials with advanced architectures for effective sensing and detection.
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Affiliation(s)
- Dihua Dai
- Jilin University, College of Chemistry, CHINA
| | - Jie Yang
- Jilin University, College of Chemistry, CHINA
| | - Ying-Wei Yang
- Jilin University, College of Chemistry, 2699 Qianjin Street, 130012, Changchun, CHINA
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14
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Choi SK, Kim J, Kim E. Overview of Syntheses and Molecular-Design Strategies for Tetrazine-Based Fluorogenic Probes. Molecules 2021; 26:1868. [PMID: 33810254 PMCID: PMC8037913 DOI: 10.3390/molecules26071868] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 03/20/2021] [Accepted: 03/24/2021] [Indexed: 11/17/2022] Open
Abstract
Various bioorthogonal chemistries have been used for fluorescent imaging owing to the advantageous reactions they employ. Recent advances in bioorthogonal chemistry have revolutionized labeling strategies for fluorescence imaging, with inverse electron demand Diels-Alder (iEDDA) reactions in particular attracting recent attention owing to their fast kinetics and excellent specificity. One of the most interesting features of the iEDDA labeling strategy is that tetrazine-functionalized dyes are known to act as fluorogenic probes. In this review, we will focus on the synthesis, molecular-design strategies, and bioimaging applications of tetrazine-functionalized fluorogenic probes. Traditional Pinner reaction and "Pinner-like" reactions for tetrazine synthesis are discussed here, as well as metal-catalyzed C-C bond formations with convenient tetrazine intermediates and the fabrication of tetrazine-conjugated fluorophores. In addition, four different quenching mechanisms for tetrazine-modified fluorophores are presented.
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Affiliation(s)
- Sang-Kee Choi
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Korea;
| | - Jonghoon Kim
- Department of Chemistry, Soongsil University, Seoul 06978, Korea
| | - Eunha Kim
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Korea;
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15
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Gutzeit VA, Acosta-Ruiz A, Munguba H, Häfner S, Landra-Willm A, Mathes B, Mony J, Yarotski D, Börjesson K, Liston C, Sandoz G, Levitz J, Broichhagen J. A fine-tuned azobenzene for enhanced photopharmacology in vivo. Cell Chem Biol 2021; 28:1648-1663.e16. [PMID: 33735619 DOI: 10.1016/j.chembiol.2021.02.020] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/23/2020] [Accepted: 02/23/2021] [Indexed: 12/15/2022]
Abstract
Despite the power of photopharmacology for interrogating signaling proteins, many photopharmacological systems are limited by their efficiency, speed, or spectral properties. Here, we screen a library of azobenzene photoswitches and identify a urea-substituted "azobenzene-400" core that offers bistable switching between cis and trans with improved kinetics, light sensitivity, and a red-shift. We then focus on the metabotropic glutamate receptors (mGluRs), neuromodulatory receptors that are major pharmacological targets. Synthesis of "BGAG12,400," a photoswitchable orthogonal, remotely tethered ligand (PORTL), enables highly efficient, rapid optical agonism following conjugation to SNAP-tagged mGluR2 and permits robust optical control of mGluR1 and mGluR5 signaling. We then produce fluorophore-conjugated branched PORTLs to enable dual imaging and manipulation of mGluRs and highlight their power in ex vivo slice and in vivo behavioral experiments in the mouse prefrontal cortex. Finally, we demonstrate the generalizability of our strategy by developing an improved soluble, photoswitchable pore blocker for potassium channels.
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Affiliation(s)
- Vanessa A Gutzeit
- Neuroscience Graduate Program, Weill Cornell Medicine, New York, NY 10065, USA
| | - Amanda Acosta-Ruiz
- Biochemistry, Cell and Molecular Biology Graduate Program, Weill Cornell Medicine, New York, NY 10065, USA
| | - Hermany Munguba
- Department of Biochemistry, Weill Cornell Medicine, New York, NY 10065, USA
| | - Stephanie Häfner
- Université Cote d'Azur, CNRS, INSERM, iBV, Nice, France; Laboratories of Excellence, Ion Channel Science and Therapeutics, Nice, France
| | - Arnaud Landra-Willm
- Université Cote d'Azur, CNRS, INSERM, iBV, Nice, France; Laboratories of Excellence, Ion Channel Science and Therapeutics, Nice, France
| | - Bettina Mathes
- Department of Chemical Biology, Max Planck Institute for Medical Research, 69120 Heidelberg, Germany
| | - Jürgen Mony
- Department of Chemistry and Molecular Biology, University of Gothenburg, 41296 Gothenburg, Sweden
| | - Dzianis Yarotski
- Department of Chemical Biology, Max Planck Institute for Medical Research, 69120 Heidelberg, Germany
| | - Karl Börjesson
- Department of Chemistry and Molecular Biology, University of Gothenburg, 41296 Gothenburg, Sweden
| | - Conor Liston
- Department of Psychiatry and Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY 10065, USA
| | - Guillaume Sandoz
- Université Cote d'Azur, CNRS, INSERM, iBV, Nice, France; Laboratories of Excellence, Ion Channel Science and Therapeutics, Nice, France
| | - Joshua Levitz
- Neuroscience Graduate Program, Weill Cornell Medicine, New York, NY 10065, USA; Biochemistry, Cell and Molecular Biology Graduate Program, Weill Cornell Medicine, New York, NY 10065, USA; Department of Biochemistry, Weill Cornell Medicine, New York, NY 10065, USA.
| | - Johannes Broichhagen
- Department of Chemical Biology, Max Planck Institute for Medical Research, 69120 Heidelberg, Germany; Department of Chemical Biology, Leibniz-Forschungsinstitut für Molekulare Pharmakologie, 13125 Berlin, Germany.
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16
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Mukaimine A, Hirayama T, Nagasawa H. Asymmetric bismuth-rhodamines as an activatable fluorogenic photosensitizer. Org Biomol Chem 2021; 19:3611-3619. [PMID: 33506853 DOI: 10.1039/d0ob02456b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bismuth-rhodamine compounds stand out for their unique excitable photosensitizing properties and concomitant fluorescence; however, further knowledge of the structure-property relationship is required to expand the scope of their practical application. With this aim, this study describes the first examples of asymmetric bismuth-incorporated rhodamines, BiRNH and BiRAc, including their synthesis, photophysical properties, and photosensitizing abilities. Upon red light excitation, BiRNH exhibits detectable emission and photosensitizing properties, while the N-acetylated derivative BiRAc shows a hypsochromic shift in the absorption wavelength and attenuation of emission and photosensitizing ability. These significantly different photophysical properties enabled us to design an activatable fluorogenic photosensitizer, BiRGlu, which bears a γ-glutamyl group instead of the acetyl group in BiRAc. The γ-glutamyl group can be cleaved by γ-glutamyl transpeptidase (GGT) to produce BiRNH, which acts as a red-light-excitable fluorophore and photosensitizer. A cell study revealed that the phototoxicity and fluorescence of BiRGlu could be simultaneously and selectively activated in the cells with high GGT activity. Thus, we established that BiRNH could be envisaged as a versatile scaffold for activatable fluorogenic photosensitizers.
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Affiliation(s)
- Akari Mukaimine
- Laboratory of Pharmaceutical and Medicinal Chemistry, Gifu Pharmaceutical University, 1-25-4, Daigaku-nishi, Gifu-shi, Gifu, 501-1196, Japan.
| | - Tasuku Hirayama
- Laboratory of Pharmaceutical and Medicinal Chemistry, Gifu Pharmaceutical University, 1-25-4, Daigaku-nishi, Gifu-shi, Gifu, 501-1196, Japan.
| | - Hideko Nagasawa
- Laboratory of Pharmaceutical and Medicinal Chemistry, Gifu Pharmaceutical University, 1-25-4, Daigaku-nishi, Gifu-shi, Gifu, 501-1196, Japan.
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17
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G. Keller S, Kamiya M, Urano Y. Recent Progress in Small Spirocyclic, Xanthene-Based Fluorescent Probes. Molecules 2020; 25:E5964. [PMID: 33339370 PMCID: PMC7766215 DOI: 10.3390/molecules25245964] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/14/2020] [Accepted: 12/14/2020] [Indexed: 12/13/2022] Open
Abstract
The use of fluorescent probes in a multitude of applications is still an expanding field. This review covers the recent progress made in small molecular, spirocyclic xanthene-based probes containing different heteroatoms (e.g., oxygen, silicon, carbon) in position 10'. After a short introduction, we will focus on applications like the interaction of probes with enzymes and targeted labeling of organelles and proteins, detection of small molecules, as well as their use in therapeutics or diagnostics and super-resolution microscopy. Furthermore, the last part will summarize recent advances in the synthesis and understanding of their structure-behavior relationship including novel computational approaches.
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Affiliation(s)
- Sascha G. Keller
- Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; (S.G.K.); (M.K.)
| | - Mako Kamiya
- Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; (S.G.K.); (M.K.)
| | - Yasuteru Urano
- Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; (S.G.K.); (M.K.)
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- AMED-CREST, Japan Agency for Medical Research and Development, 1-7-1 Otemachi, Chiyoda-ku, Tokyo 100-0004, Japan
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18
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Cavett V, Paegel BM. Multiplexed Enzyme Activity-Based Probe Display via Hybridization. ACS COMBINATORIAL SCIENCE 2020; 22:579-585. [PMID: 32803953 DOI: 10.1021/acscombsci.0c00116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Emulsions offer the means to miniaturize and parallelize high-throughput screening but require a robust method to localize activity-based fluorescent probes in each droplet. Multiplexing probes in droplets is impractical, though highly desirable for identifying library members that possess very specific activity. Here, we present multiplexed probe immobilization on library beads for emulsion screening. During library bead preparation, we quantitated ∼106 primers per bead by fluorescence in situ hybridization, however emulsion PCR yielded only ∼103 gene copies per bead. We leveraged the unextended bead-bound primers to hybridize complementary probe-oligonucleotide heteroconjugates to the library beads. The probe-hybridized bead libraries were then used to program emulsion in vitro transcription/translation reactions and analyzed by FACS to perform multiplexed activity-based screening of trypsin and chymotrypsin mutant libraries for novel proteolytic specificity. The approach's modularity should permit a high degree of probe multiplexing and appears extensible to other enzyme classes and library types.
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Affiliation(s)
- Valerie Cavett
- Department of Pharmaceutical Sciences, University of California, Irvine, California 92617, United States
| | - Brian M. Paegel
- Department of Pharmaceutical Sciences, University of California, Irvine, California 92617, United States
- Departments of Chemistry & Biomedical Engineering, University of California, Irvine, California 92617, United States
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19
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Tang J, Yu C, Loredo A, Chen Y, Xiao H. Site-Specific Incorporation of a Photoactivatable Fluorescent Amino Acid. Chembiochem 2020; 22:501-504. [PMID: 32961013 DOI: 10.1002/cbic.202000602] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/21/2020] [Indexed: 12/11/2022]
Abstract
Photoactivatable fluorophores are emerging optical probes for biological applications. Most photoactivatable fluorophores are relatively large in size and need to be activated by ultraviolet light; this dramatically limits their applications. To introduce photoactivatable fluorophores into proteins, recent investigations have explored several protein-labeling technologies, including fluorescein arsenical hairpin (FlAsH) Tag, HaloTag labeling, SNAPTag labeling, and other bioorthogonal chemistry-based methods. However, these technologies require a multistep labeling process. Here, by using genetic code expansion and a single sulfur-for-oxygen atom replacement within an existing fluorescent amino acid, we have site-specifically incorporated the photoactivatable fluorescent amino acid thioacridonylalanine (SAcd) into proteins in a single step. Moreover, upon exposure to visible light, SAcd can be efficiently desulfurized to its oxo derivatives, thus restoring the strong fluorescence of labeled proteins.
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Affiliation(s)
- Juan Tang
- Department of Chemistry, Rice University, 6100 Main Street, Houston, TX, 77005, USA
| | - Chenfei Yu
- Department of Chemistry, Rice University, 6100 Main Street, Houston, TX, 77005, USA
| | - Axel Loredo
- Department of Chemistry, Rice University, 6100 Main Street, Houston, TX, 77005, USA
| | - Yuda Chen
- Department of Chemistry, Rice University, 6100 Main Street, Houston, TX, 77005, USA
| | - Han Xiao
- Department of Chemistry, Rice University, 6100 Main Street, Houston, TX, 77005, USA
- Department of Biosciences, Rice University, 6100 Main Street, Houston, TX, 77005, USA
- Department of Bioengineering, Rice University, 6100 Main Street, Houston, TX, 77005, USA
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20
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Sodre ER, Guido BC, de Souza PEN, Machado DFS, Carvalho-Silva VH, Chaker JA, Gatto CC, Correa JR, Fernandes TDA, Neto BAD. Deciphering the Dynamics of Organic Nanoaggregates with AIEE Effect and Excited States: Lipophilic Benzothiadiazole Derivatives as Selective Cell Imaging Probes. J Org Chem 2020; 85:12614-12634. [PMID: 32876447 DOI: 10.1021/acs.joc.0c01805] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
An aggregation-induced emission enhancement (AIEE) effect in fluorescent lipophilic 2,1,3-benzothiadiazole (BTD) derivatives and their organic nanoaggregates were studied. A set of techniques such as single-crystal X-ray, dynamic light scattering (DLS), electron paramagnetic resonance (EPR), UV-vis, fluorescence, and density functional theory (DFT) calculations have been used to decipher the formation/break (kinetics), properties, and dynamics of the organic nanoaggregates of three BTD small organic molecules. An in-depth study of the excited-state also revealed the preferential relaxation emissive pathways for the BTD derivatives and the dynamics associated with it. The results described herein, for the first time, explain the formation of fluorescent BTD nanoaggregate derivatives and allow for the understanding of their dynamics in solution as well as the ruling forces of both aggregation and break processes along with the involved equilibrium. One of the developed dyes could be used at a nanomolar concentration to selectively stain lipid droplets emitting an intense and bright fluorescence at the red channel. The other two BTDs could also stain lipid droplets at very low concentrations and were visualized preferentially at the blue channel.
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Affiliation(s)
- Elaine R Sodre
- Laboratory of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy Ribeiro, Brasília, Distrito Federal 70904-900, Brazil
| | - Bruna C Guido
- Laboratory of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy Ribeiro, Brasília, Distrito Federal 70904-900, Brazil
| | - Paulo E N de Souza
- Laboratory of Software and Instrumentation in Applied Physics and Laboratory of Electron Paramagnetic Resonance, Institute of Physics, Campus Universitário Darcy Ribeiro, Brasília, Distrito Federal 70904-970, Brazil
| | - Daniel F S Machado
- Laboratory of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy Ribeiro, Brasília, Distrito Federal 70904-900, Brazil
| | - Valter H Carvalho-Silva
- Divisão de Modelagem de Transformações Físicas e Químicas, Grupo de Química Teo'rica e Estrutural de Ana'polis, Centro de Pesquisa e Pos-Graduação, Universidade Estadual de Goia's,, Ana'polis, Goia's 75001-970, Brazil
| | - Juliano A Chaker
- Laboratory of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy Ribeiro, Brasília, Distrito Federal 70904-900, Brazil
| | - Claudia C Gatto
- Laboratory of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy Ribeiro, Brasília, Distrito Federal 70904-900, Brazil
| | - Jose R Correa
- Laboratory of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy Ribeiro, Brasília, Distrito Federal 70904-900, Brazil
| | - Talita de A Fernandes
- Laboratory of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy Ribeiro, Brasília, Distrito Federal 70904-900, Brazil
| | - Brenno A D Neto
- Laboratory of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy Ribeiro, Brasília, Distrito Federal 70904-900, Brazil
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21
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Kooij R, Liu S, Sapmaz A, Xin BT, Janssen GMC, van Veelen PA, Ovaa H, Dijke PT, Geurink PP. Small-Molecule Activity-Based Probe for Monitoring Ubiquitin C-Terminal Hydrolase L1 (UCHL1) Activity in Live Cells and Zebrafish Embryos. J Am Chem Soc 2020; 142:16825-16841. [PMID: 32886496 PMCID: PMC7530896 DOI: 10.1021/jacs.0c07726] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
![]()
Many reagents have emerged to study
the function of specific enzymes in vitro. On the
other hand, target specific reagents are
scarce or need improvement, allowing investigations of the function
of individual enzymes in their native cellular context. Here we report
the development of a target-selective fluorescent small-molecule activity-based
DUB probe that is active in live cells and an in vivo animal model. The probe labels active ubiquitin carboxy-terminal
hydrolase L1 (UCHL1), also known as neuron-specific protein PGP9.5
(PGP9.5) and Parkinson disease 5 (PARK5), a DUB active in neurons
that constitutes 1 to 2% of the total brain protein. UCHL1 variants
have been linked with neurodegenerative disorders Parkinson’s
and Alzheimer’s diseases. In addition, high levels of UCHL1
also correlate often with cancer and especially metastasis. The function
of UCHL1 activity or its role in cancer and neurodegenerative disease
is poorly understood and few UCHL1-specific activity tools exist.
We show that the reagents reported here are specific to UCHL1 over
all other DUBs detectable by competitive activity-based protein profiling
and by mass spectrometry. Our cell-penetrable probe, which contains
a cyanimide reactive moiety, binds to the active-site cysteine residue
of UCHL1 in an activity-dependent manner. Its use is demonstrated
by the fluorescent labeling of active UCHL1 both in vitro and in live cells. We furthermore show that this probe can selectively
and spatiotemporally report UCHL1 activity during the development
of zebrafish embryos. Our results indicate that our probe has potential
applications as a diagnostic tool for diseases with perturbed UCHL1
activity.
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Affiliation(s)
- Raymond Kooij
- Oncode Institute & Department of Cell and Chemical Biology, Leiden University Medical Center, Einthovenweg 20, 2333 ZC Leiden, The Netherlands
| | - Sijia Liu
- Oncode Institute & Department of Cell and Chemical Biology, Leiden University Medical Center, Einthovenweg 20, 2333 ZC Leiden, The Netherlands
| | - Aysegul Sapmaz
- Oncode Institute & Department of Cell and Chemical Biology, Leiden University Medical Center, Einthovenweg 20, 2333 ZC Leiden, The Netherlands
| | - Bo-Tao Xin
- Oncode Institute & Department of Cell and Chemical Biology, Leiden University Medical Center, Einthovenweg 20, 2333 ZC Leiden, The Netherlands
| | - George M C Janssen
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Albinusdreef 2, 2333 ZC Leiden, The Netherlands
| | - Peter A van Veelen
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Albinusdreef 2, 2333 ZC Leiden, The Netherlands
| | - Huib Ovaa
- Oncode Institute & Department of Cell and Chemical Biology, Leiden University Medical Center, Einthovenweg 20, 2333 ZC Leiden, The Netherlands
| | - Peter Ten Dijke
- Oncode Institute & Department of Cell and Chemical Biology, Leiden University Medical Center, Einthovenweg 20, 2333 ZC Leiden, The Netherlands
| | - Paul P Geurink
- Oncode Institute & Department of Cell and Chemical Biology, Leiden University Medical Center, Einthovenweg 20, 2333 ZC Leiden, The Netherlands
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22
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Binns TC, Ayala AX, Grimm JB, Tkachuk AN, Castillon GA, Phan S, Zhang L, Brown TA, Liu Z, Adams SR, Ellisman MH, Koyama M, Lavis LD. Rational Design of Bioavailable Photosensitizers for Manipulation and Imaging of Biological Systems. Cell Chem Biol 2020; 27:1063-1072.e7. [PMID: 32698018 PMCID: PMC7483975 DOI: 10.1016/j.chembiol.2020.07.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 06/04/2020] [Accepted: 06/29/2020] [Indexed: 01/14/2023]
Abstract
Light-mediated chemical reactions are powerful methods for manipulating and interrogating biological systems. Photosensitizers, compounds that generate reactive oxygen species upon excitation with light, can be utilized for numerous biological experiments, but the repertoire of bioavailable photosensitizers is limited. Here, we describe the synthesis, characterization, and utility of two photosensitizers based upon the widely used rhodamine scaffold and demonstrate their efficacy for chromophore-assisted light inactivation, cell ablation in culture and in vivo, and photopolymerization of diaminobenzidine for electron microscopy. These chemical tools will facilitate a broad range of applications spanning from targeted destruction of proteins to high-resolution imaging.
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Affiliation(s)
- Thomas C Binns
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA; Graduate School, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Anthony X Ayala
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Jonathan B Grimm
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Ariana N Tkachuk
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Guillaume A Castillon
- Department of Neurosciences, University of California San Diego, La Jolla, CA 92093, USA
| | - Sebastien Phan
- Department of Neurosciences, University of California San Diego, La Jolla, CA 92093, USA
| | - Lixia Zhang
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Timothy A Brown
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Zhe Liu
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Stephen R Adams
- Department of Pharmacology, University of California San Diego, La Jolla, CA 92093, USA
| | - Mark H Ellisman
- Department of Neurosciences, University of California San Diego, La Jolla, CA 92093, USA
| | - Minoru Koyama
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Luke D Lavis
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA.
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23
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Loredo A, Tang J, Wang L, Wu KL, Peng Z, Xiao H. Tetrazine as a general phototrigger to turn on fluorophores. Chem Sci 2020; 11:4410-4415. [PMID: 33384859 PMCID: PMC7690217 DOI: 10.1039/d0sc01009j] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 04/02/2020] [Indexed: 12/18/2022] Open
Abstract
Light-activated fluorescence affords a powerful tool for monitoring subcellular structures and dynamics with enhanced temporal and spatial control of the fluorescence signal. Here, we demonstrate a general and straightforward strategy for using a tetrazine phototrigger to design photoactivatable fluorophores that emit across the visible spectrum. Tetrazine is known to efficiently quench the fluorescence of various fluorophores via a mechanism referred to as through-bond energy transfer. Upon light irradiation, restricted tetrazine moieties undergo a photolysis reaction that generates two nitriles and molecular nitrogen, thus restoring the fluorescence of fluorophores. Significantly, we find that this strategy can be successfully translated and generalized to a wide range of fluorophore scaffolds. Based on these results, we have used this mechanism to design photoactivatable fluorophores targeting cellular organelles and proteins. Compared to widely used phototriggers (e.g., o-nitrobenzyl and nitrophenethyl groups), this study affords a new photoactivation mechanism, in which the quencher is photodecomposed to restore the fluorescence upon light irradiation. Because of the exclusive use of tetrazine as a photoquencher in the design of fluorogenic probes, we anticipate that our current study will significantly facilitate the development of novel photoactivatable fluorophores.
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Affiliation(s)
- Axel Loredo
- Department of Chemistry , Rice University , 6100 Main Street , Houston , Texas 77005 , USA .
| | - Juan Tang
- Department of Chemistry , Rice University , 6100 Main Street , Houston , Texas 77005 , USA .
| | - Lushun Wang
- Department of Chemistry , Rice University , 6100 Main Street , Houston , Texas 77005 , USA .
| | - Kuan-Lin Wu
- Department of Chemistry , Rice University , 6100 Main Street , Houston , Texas 77005 , USA .
| | - Zane Peng
- Department of Biosciences , Rice University , 6100 Main Street , Houston , Texas 77005 , USA
| | - Han Xiao
- Department of Chemistry , Rice University , 6100 Main Street , Houston , Texas 77005 , USA .
- Department of Biosciences , Rice University , 6100 Main Street , Houston , Texas 77005 , USA
- Department of Bioengineering , Rice University , 6100 Main Street , Houston , Texas 77005 , USA
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24
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Saneyoshi H, Yamamoto Y, Ohta T, Akai S, Ono A. Thiol-responsive pro-fluorophore labeling: Synthesis of a pro-fluorescent labeled oligonucleotide for monitoring cellular uptake. Bioorg Med Chem Lett 2020; 30:127222. [PMID: 32386978 DOI: 10.1016/j.bmcl.2020.127222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 04/21/2020] [Accepted: 04/25/2020] [Indexed: 10/24/2022]
Abstract
Pro-fluorescent labeled oligonucleotides are potential alternative tools to classical fluorescently labeled oligonucleotides for monitoring cellular uptake. Here, we report the design and synthesis of a thiol-responsive pro-fluorophore labeled oligonucleotide, and its fluorescence responsivity to glutathione in the test tube and live cells.
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Affiliation(s)
- Hisao Saneyoshi
- Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan; Department of Chemistry, Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu, Shiga 520-2192, Japan.
| | - Yuta Yamamoto
- Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - Takayuki Ohta
- Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - Shoji Akai
- Laboratory of Synthetic Organic Chemistry, Kagawa Nutrition University, 3-9-21 Chiyoda, Sakado, Saitama 350-0288, Japan
| | - Akira Ono
- Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan.
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25
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Lee M, Maji B, Manna D, Kahraman S, Elgamal RM, Small J, Kokkonda P, Vetere A, Goldberg JM, Lippard SJ, Kulkarni RN, Wagner BK, Choudhary A. Native Zinc Catalyzes Selective and Traceless Release of Small Molecules in β-Cells. J Am Chem Soc 2020; 142:6477-6482. [PMID: 32175731 PMCID: PMC7146867 DOI: 10.1021/jacs.0c00099] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
![]()
The loss of insulin-producing β-cells
is the central pathological
event in type 1 and 2 diabetes, which has led to efforts to identify
molecules to promote β-cell proliferation, protection, and imaging.
However, the lack of β-cell specificity of these molecules jeopardizes
their therapeutic potential. A general platform for selective release
of small-molecule cargoes in β-cells over other islet cells ex vivo or other cell-types in an organismal context will
be immensely valuable in advancing diabetes research and therapeutic
development. Here, we leverage the unusually high Zn(II) concentration
in β-cells to develop a Zn(II)-based prodrug system to selectively
and tracelessly deliver bioactive small molecules and fluorophores
to β-cells. The Zn(II)-targeting mechanism enriches the inactive
cargo in β-cells as compared to other pancreatic cells; importantly,
Zn(II)-mediated hydrolysis triggers cargo activation. This prodrug
system, with modular components that allow for fine-tuning selectivity,
should enable the safer and more effective targeting of β-cells.
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Affiliation(s)
- Miseon Lee
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | - Basudeb Maji
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States.,Divisions of Renal Medicine and Engineering, Brigham and Women's Hospital, Boston, Massachusetts 02115, United States
| | - Debasish Manna
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States.,Divisions of Renal Medicine and Engineering, Brigham and Women's Hospital, Boston, Massachusetts 02115, United States
| | - Sevim Kahraman
- Islet Cell and Regenerative Biology, Joslin Diabetes Center, Boston, Massachusetts 02215, United States.,Harvard Stem Cell InstituteHarvard Medical School, Cambridge, Massachusetts 02138, United States
| | - Ruth M Elgamal
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States.,Divisions of Renal Medicine and Engineering, Brigham and Women's Hospital, Boston, Massachusetts 02115, United States
| | - Jonnell Small
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States.,Chemical Biology Program, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Praveen Kokkonda
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | - Amedeo Vetere
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | - Jacob M Goldberg
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Stephen J Lippard
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Rohit N Kulkarni
- Islet Cell and Regenerative Biology, Joslin Diabetes Center, Boston, Massachusetts 02215, United States.,Harvard Stem Cell InstituteHarvard Medical School, Cambridge, Massachusetts 02138, United States
| | - Bridget K Wagner
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | - Amit Choudhary
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States.,Divisions of Renal Medicine and Engineering, Brigham and Women's Hospital, Boston, Massachusetts 02115, United States.,Chemical Biology Program, Harvard University, Cambridge, Massachusetts 02138, United States
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26
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Bywaters L, Le Gresley A. Synthesis and Spectral Properties of Novel Singapore Green Analogues for Protease Detection. Sci Rep 2020; 10:259. [PMID: 31937839 PMCID: PMC6959322 DOI: 10.1038/s41598-019-57124-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 12/19/2019] [Indexed: 11/15/2022] Open
Abstract
Herein we describe the synthesis, characterisation and determination of fluorescence and photophysical properties of various novel analogues of the orphan fluorophore class Singapore Green. We equate the fluorescence properties of these novel fluorophores to their molecular structure and address the mechanisms through which their fluorescence is quenched and the effect this has on their quantum yields of fluorescence. Fluorescence quenching via acylation was also achieved, thereby providing conceptual proof of their utility as cores for future fluorescent probes. Additionally, we have produced and examined a number of unexpected acyl intermediates of variable photolytic stability. Furthermore, we have obtained proof of concept that the use of Singapore Greens for protease probe generation is feasible via demonstration of proteolytic cleavage of one of the acylated analogues.
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Affiliation(s)
- Luke Bywaters
- School of Life Sciences, Pharmacy and Chemistry, SEC Faculty, Kingston University, Kingston-upon-Thames, KT1 2EE, UK
| | - Adam Le Gresley
- School of Life Sciences, Pharmacy and Chemistry, SEC Faculty, Kingston University, Kingston-upon-Thames, KT1 2EE, UK.
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27
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Tang J, Robichaux MA, Wu KL, Pei J, Nguyen NT, Zhou Y, Wensel TG, Xiao H. Single-Atom Fluorescence Switch: A General Approach toward Visible-Light-Activated Dyes for Biological Imaging. J Am Chem Soc 2019; 141:14699-14706. [PMID: 31450884 DOI: 10.1021/jacs.9b06237] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Photoactivatable fluorophores afford powerful molecular tools to improve the spatial and temporal resolution of subcellular structures and dynamics. By performing a single sulfur-for-oxygen atom replacement within common fluorophores, we have developed a facile and general strategy to obtain photoactivatable fluorogenic dyes across a broad spectral range. Thiocarbonyl substitution within fluorophores results in significant loss of fluorescence via a photoinduced electron transfer-quenching mechanism as suggested by theoretical calculations. Significantly, upon exposure to air and visible light residing in their absorption regime (365-630 nm), thio-caged fluorophores can be efficiently desulfurized to their oxo derivatives, thus restoring strong emission of the fluorophores. The effective photoactivation makes thio-caged fluorophores promising candidates for super-resolution imaging, which was realized by photoactivated localization microscopy (PALM) with low-power activation light under physiological conditions in the absence of cytotoxic additives (e.g., thiols, oxygen scavengers), a feature superior to traditional PALM probes. The versatility of this thio-caging strategy was further demonstrated by multicolor super-resolution imaging of lipid droplets and proteins of interest.
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Affiliation(s)
| | - Michael A Robichaux
- Verna and Marrs McLean Department of Biochemistry and Molecular Biology , Baylor College of Medicine , Houston , Texas 77030 , United States
| | | | | | - Nhung T Nguyen
- Center for Translational Cancer Research, Institute of Biosciences and Technology, College of Medicine , Texas A&M University , Houston , Texas 77030 , United States
| | - Yubin Zhou
- Center for Translational Cancer Research, Institute of Biosciences and Technology, College of Medicine , Texas A&M University , Houston , Texas 77030 , United States
| | - Theodore G Wensel
- Verna and Marrs McLean Department of Biochemistry and Molecular Biology , Baylor College of Medicine , Houston , Texas 77030 , United States
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28
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Jarzębski M, Peplińska B, Florczak P, Gapiński J, Flak D, Mała P, Ramanavicius A, Baryła-Pankiewicz E, Kobus- Cisowska J, Szwajca A. Fluorescein ether-ester dyes for labeling of fluorinated methacrylate nanoparticles. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.111956] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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29
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Hetrick KJ, Aguilar Ramos MA, Raines RT. Terbium(III) Luminescence-Based Assay for Esterase Activity. Anal Chem 2019; 91:8615-8621. [PMID: 31247727 DOI: 10.1021/acs.analchem.9b01954] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Esterases catalyze the hydrolysis of esters to form a carboxylic acid and alcohol. These enzymes play a key role in both the detoxification of xenobiotic compounds and the metabolism of drugs and prodrugs. Numerous fluorogenic probes have been developed to monitor esterase activity. Most are based on an aromatic alcohol, and the others are based on an aromatic acid. These restrictions leave unexplored the specificity of esterases for aliphatic esters. Here, we report on the use of esters of thiopheneacetic acid coupled with the luminescence of terbium(III) as the basis for a continuous assay of esterase activity. This probe allows for a wide variation of the alcohol moiety and the detection of its hydrolysis at submicromolar concentrations. The assay verifies steady-state kinetic parameters for catalysis by pig liver esterase from either initial rates or the integration of progress curves, and its utility is evident with unpurified esterases in bacterial and human cell lysates.
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Affiliation(s)
- Kenton J Hetrick
- Department of Chemistry , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States.,Broad Institute of MIT and Harvard , Cambridge , Massachusetts 02142 , United States
| | - Miguel A Aguilar Ramos
- Department of Chemistry , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States
| | - Ronald T Raines
- Department of Chemistry , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States.,Broad Institute of MIT and Harvard , Cambridge , Massachusetts 02142 , United States
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30
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Fang Y, Good GN, Zhou X, Stains CI. Phosphinate-containing rhodol and fluorescein scaffolds for the development of bioprobes. Chem Commun (Camb) 2019; 55:5962-5965. [PMID: 31050345 DOI: 10.1039/c9cc02492a] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A series of phosphinate-containing rhodol and fluorescein dyes are disclosed. These new fluorophores increase the color palette of phosphinate-based xanthenes in the far-red spectral region. The new chemical functionality of these scaffolds is leveraged to produce a sensitive, no-wash imaging probe for cellular esterase activity. The reported phosphinate-containing dyes provide platforms for the further development of imaging probes and self-reporting delivery vehicles.
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Affiliation(s)
- Yuan Fang
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, USA.
| | - Gillian N Good
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, USA. and Department of Chemistry, Millersville University, Millersville, Pennsylvania 17551, USA
| | - Xinqi Zhou
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, USA.
| | - Cliff I Stains
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, USA. and Nebraska Center for Integrated Biomolecular Communication, University of Nebraska-Lincoln, Lincoln, NE 68588, USA and Cancer Genes and Molecular Regulation Program, Fred & Pamela Buffet Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198, USA
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31
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Lovell TC, Colwell CE, Zakharov LN, Jasti R. Symmetry breaking and the turn-on fluorescence of small, highly strained carbon nanohoops. Chem Sci 2019; 10:3786-3790. [PMID: 30996967 PMCID: PMC6446961 DOI: 10.1039/c9sc00169g] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 02/22/2019] [Indexed: 12/25/2022] Open
Abstract
[n]Cycloparaphenylenes, or "carbon nanohoops," are unique conjugated macrocycles with radially oriented π-systems similar to those in carbon nanotubes. The centrosymmetric nature and conformational rigidity of these molecules lead to unusual size-dependent photophysical characteristics. To investigate these effects further and expand the family of possible structures, a new class of related carbon nanohoops with broken symmetry is disclosed. In these structures, referred to as meta[n]cycloparaphenylenes, a single carbon-carbon bond is shifted by one position in order to break the centrosymmetric nature of the parent [n]cycloparaphenylenes. Advantageously, the symmetry breaking leads to bright emission in the smaller nanohoops, which are typically non-fluorescent due to optical selection rules. Moreover, this simple structural manipulation retains one of the most unique features of the nanohoop structures-size dependent emissive properties with relatively large extinction coefficients and quantum yields. Inspired by earlier theoretical work by Tretiak and co-workers, this joint synthetic, photophysical, and theoretical study provides further design principles to manipulate the optical properties of this growing class of molecules with radially oriented π-systems.
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Affiliation(s)
- Terri C Lovell
- Department of Chemistry & Biochemistry , Materials Science Institute , University of Oregon , Eugene , Oregon 97403 , USA .
| | - Curtis E Colwell
- Department of Chemistry & Biochemistry , Materials Science Institute , University of Oregon , Eugene , Oregon 97403 , USA .
| | - Lev N Zakharov
- CAMCOR - Center for Advance Materials Characterization in Oregon , University of Oregon , Eugene , Oregon 97403 , USA
| | - Ramesh Jasti
- Department of Chemistry & Biochemistry , Materials Science Institute , University of Oregon , Eugene , Oregon 97403 , USA .
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32
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Huang J, Hong D, Lang W, Liu J, Dong J, Yuan C, Luo J, Ge J, Zhu Q. Recent advances in reaction-based fluorescent probes for detecting monoamine oxidases in living systems. Analyst 2019; 144:3703-3709. [DOI: 10.1039/c9an00409b] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This Minireview summarizes the recent advances in reaction based MAO type fluorescent probes and their imaging applications in living systems.
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Affiliation(s)
- Jintao Huang
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province
- College of Biotechnology and Bioengineering
- Zhejiang University of Technology
- Hangzhou
- P. R. China
| | - Danqi Hong
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province
- College of Biotechnology and Bioengineering
- Zhejiang University of Technology
- Hangzhou
- P. R. China
| | - Wenjie Lang
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province
- College of Biotechnology and Bioengineering
- Zhejiang University of Technology
- Hangzhou
- P. R. China
| | - Jian Liu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province
- College of Biotechnology and Bioengineering
- Zhejiang University of Technology
- Hangzhou
- P. R. China
| | - Jia Dong
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province
- College of Biotechnology and Bioengineering
- Zhejiang University of Technology
- Hangzhou
- P. R. China
| | - Chaonan Yuan
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province
- College of Biotechnology and Bioengineering
- Zhejiang University of Technology
- Hangzhou
- P. R. China
| | - Jie Luo
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province
- College of Biotechnology and Bioengineering
- Zhejiang University of Technology
- Hangzhou
- P. R. China
| | - Jingyan Ge
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province
- College of Biotechnology and Bioengineering
- Zhejiang University of Technology
- Hangzhou
- P. R. China
| | - Qing Zhu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province
- College of Biotechnology and Bioengineering
- Zhejiang University of Technology
- Hangzhou
- P. R. China
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33
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Abstract
The past decade has witnessed an explosion in the use of super-resolution fluorescence microscopy methods in biology and other fields. Single-molecule localization microscopy (SMLM) is one of the most widespread of these methods and owes its success in large part to the ability to control the on-off state of fluorophores through various chemical, photochemical, or binding-unbinding mechanisms. We provide here a comprehensive overview of switchable fluorophores in SMLM including a detailed review of all major classes of SMLM fluorophores, and we also address strategies for labeling specimens, considerations for multichannel and live-cell imaging, potential pitfalls, and areas for future development.
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Affiliation(s)
- Honglin Li
- Department of Chemistry, University of Washington, Seattle, Washington, USA, 98195
| | - Joshua C. Vaughan
- Department of Chemistry, University of Washington, Seattle, Washington, USA, 98195
- Department of Physiology and Biophysics, University of Washington, Seattle, Washington, USA, 98195
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34
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New non-protienogenic fluorescent amino acids: Benzoxazol-5-yl-alanine derivatives containing acetylene unit. Synthesis, spectral and photophysical properties. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.07.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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35
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Li X, Chen S, Liu Z, Zhao Z, Lu J. Syntheses and evaluations of the methoxy modified 99mTc-labeled triphenyl phosphonium cations: Potential radiometallic probes for multidrug resistance detection. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.07.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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36
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White A, Koelper A, Russell A, Larsen EM, Kim C, Lavis LD, Hoops GC, Johnson RJ. Fluorogenic structure activity library pinpoints molecular variations in substrate specificity of structurally homologous esterases. J Biol Chem 2018; 293:13851-13862. [PMID: 30006352 DOI: 10.1074/jbc.ra118.003972] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 07/11/2018] [Indexed: 01/08/2023] Open
Abstract
Cellular esterases catalyze many essential biological functions by performing hydrolysis reactions on diverse substrates. The promiscuity of esterases complicates assignment of their substrate preferences and biological functions. To identify universal factors controlling esterase substrate recognition, we designed a 32-member structure-activity relationship (SAR) library of fluorogenic ester substrates and used this library to systematically interrogate esterase preference for chain length, branching patterns, and polarity to differentiate common classes of esterase substrates. Two structurally homologous bacterial esterases were screened against this library, refining their previously broad overlapping substrate specificity. Vibrio cholerae esterase ybfF displayed a preference for γ-position thioethers and ethers, whereas Rv0045c from Mycobacterium tuberculosis displayed a preference for branched substrates with and without thioethers. We determined that this substrate differentiation was partially controlled by individual substrate selectivity residues Tyr-119 in ybfF and His-187 in Rv0045c; reciprocal substitution of these residues shifted each esterase's substrate preference. This work demonstrates that the selectivity of esterases is tuned based on transition state stabilization, identifies thioethers as an underutilized functional group for esterase substrates, and provides a rapid method for differentiating structural isozymes. This SAR library could have multifaceted future applications, including in vivo imaging, biocatalyst screening, molecular fingerprinting, and inhibitor design.
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Affiliation(s)
- Alex White
- From the Department of Chemistry and Biochemistry, Butler University, Indianapolis, Indiana 46208-3443 and
| | - Andrew Koelper
- From the Department of Chemistry and Biochemistry, Butler University, Indianapolis, Indiana 46208-3443 and
| | - Arielle Russell
- From the Department of Chemistry and Biochemistry, Butler University, Indianapolis, Indiana 46208-3443 and
| | - Erik M Larsen
- From the Department of Chemistry and Biochemistry, Butler University, Indianapolis, Indiana 46208-3443 and
| | - Charles Kim
- the Howard Hughes Medical Institute, Janelia Research Campus, Ashburn, Virginia 20147-2439
| | - Luke D Lavis
- the Howard Hughes Medical Institute, Janelia Research Campus, Ashburn, Virginia 20147-2439
| | - Geoffrey C Hoops
- From the Department of Chemistry and Biochemistry, Butler University, Indianapolis, Indiana 46208-3443 and
| | - R Jeremy Johnson
- From the Department of Chemistry and Biochemistry, Butler University, Indianapolis, Indiana 46208-3443 and
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37
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Favre C, Friscourt F. Fluorogenic Sydnone-Modified Coumarins Switched-On by Copper-Free Click Chemistry. Org Lett 2018; 20:4213-4217. [PMID: 29995429 DOI: 10.1021/acs.orglett.8b01587] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The synthesis, photophysical characterization, and biochemical application of sydnone-modified coumarins, a novel class of fluorogenic clickable reagents, are reported. The sydnone moiety, a stable aromatic 1,3-dipole, efficiently quenched the fluorescence of coumarin, which could be restored, with a 132-fold enhancement, upon cycloadditions with cyclooctynes, thereby expanding the fluorogenic click toolbox. TD-DFT calculations suggest that the fluorescence quenching of the sydnone-modified coumarins is likely due to the presence of an energetically low-lying nonemissive charge-separated state.
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Affiliation(s)
- Camille Favre
- Institut Européen de Chimie et Biologie , Université de Bordeaux , 2 rue Robert Escarpit , 33607 Pessac , France.,Institut de Neurosciences Cognitives et Intégratives d'Aquitaine , CNRS UMR5287 , Bordeaux , France
| | - Frédéric Friscourt
- Institut Européen de Chimie et Biologie , Université de Bordeaux , 2 rue Robert Escarpit , 33607 Pessac , France.,Institut de Neurosciences Cognitives et Intégratives d'Aquitaine , CNRS UMR5287 , Bordeaux , France
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38
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Abney KK, Ramos-Hunter SJ, Romaine IM, Goodwin JS, Sulikowski GA, Weaver CD. Selective Activation of N,N'-Diacyl Rhodamine Pro-fluorophores Paired with Releasing Enzyme, Porcine Liver Esterase (PLE). Chemistry 2018; 24:8985-8988. [PMID: 29679472 DOI: 10.1002/chem.201801409] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Indexed: 11/05/2022]
Abstract
This study reports the synthesis and testing of a family of rhodamine pro-fluorophores and an enzyme capable of converting pro-fluorophores to Rhodamine 110. We prepared a library of simple N,N'-diacyl rhodamines and investigated porcine liver esterase (PLE) as an enzyme to activate rhodamine-based pro-fluorophores. A PLE-expressing cell line generated an increase in fluorescence rapidly upon pro-fluorophore addition demonstrating the rhodamine pro-fluorophores are readily taken up and fluorescent upon PLE-mediated release. Rhodamine pro-fluorophore amides trifluoroacetamide (TFAm) and proponamide (PAm) appeared to be the best substrates using a cell-based assay using PLE expressing HEK293. Our pro-fluorophore series showed diffusion into live cells and resisted endogenous hydrolysis. The use of our engineered cell line containing the exogenous enzyme PLE demonstrated the rigorousness of amide masking when compared to cells not containing PLE. This simple and selective pro-fluorophore rhodamine pair with PLE offers the potential to be used in vitro and in vivo fluorescence based assays.
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Affiliation(s)
- Kristopher K Abney
- School of Graduate Studies and Research, Meharry Medical College, Nashville, Tennessee, 37208, USA
| | - Susan J Ramos-Hunter
- Department of Chemistry, Vanderbilt University, Vanderbilt Institute of Chemical Biology, Nashville, TN 37232, USA
| | - Ian M Romaine
- Department of Chemistry, Vanderbilt University, Vanderbilt Institute of Chemical Biology, Nashville, TN 37232, USA
| | - J Shawn Goodwin
- Department of Neuroscience and Pharmacology, Department of Cancer Biology, Meharry Medical College, Nashville, Tennessee, 37208, USA
| | - Gary A Sulikowski
- Department of Chemistry, Vanderbilt University, Vanderbilt Institute of Chemical Biology, Nashville, TN 37232, USA
| | - C David Weaver
- Departments of Pharmacology and Chemistry, Vanderbilt University, Vanderbilt Institute of Chemical Biology, Nashville, TN, 37232, USA.,Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, Meharry Medical College, Nashville, Tennessee, 37208, USA
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39
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Fenneteau J, Chauvin D, Griffiths AD, Nizak C, Cossy J. Synthesis of new hydrophilic rhodamine based enzymatic substrates compatible with droplet-based microfluidic assays. Chem Commun (Camb) 2018; 53:5437-5440. [PMID: 28462964 DOI: 10.1039/c7cc01506b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Here we report the conception, synthesis and evaluation of new hydrophilic rhodamine-based enzymatic substrates for detection of peptidase activity compatible with high-throughput screening using droplet-based microfluidics.
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Affiliation(s)
- Johan Fenneteau
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI), UMR 8231, ESPCI Paris/CNRS, PSL Research University, 10 rue Vauquelin, 75231-Paris Cedex 05, France.
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40
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Liu Y, Pujals S, Stals PJM, Paulöhrl T, Presolski SI, Meijer EW, Albertazzi L, Palmans ARA. Catalytically Active Single-Chain Polymeric Nanoparticles: Exploring Their Functions in Complex Biological Media. J Am Chem Soc 2018; 140:3423-3433. [PMID: 29457449 PMCID: PMC5997400 DOI: 10.1021/jacs.8b00122] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Indexed: 01/01/2023]
Abstract
Dynamic single-chain polymeric nanoparticles (SCPNs) are intriguing, bioinspired architectures that result from the collapse or folding of an individual polymer chain into a nanometer-sized particle. Here we present a detailed biophysical study on the behavior of dynamic SCPNs in living cells and an evaluation of their catalytic functionality in such a complex medium. We first developed a number of delivery strategies that allowed the selective localization of SCPNs in different cellular compartments. Live/dead tests showed that the SCPNs were not toxic to cells while spectral imaging revealed that SCPNs provide a structural shielding and reduced the influence from the outer biological media. The ability of SCPNs to act as catalysts in biological media was first assessed by investigating their potential for reactive oxygen species generation. With porphyrins covalently attached to the SCPNs, singlet oxygen was generated upon irradiation with light, inducing spatially controlled cell death. In addition, Cu(I)- and Pd(II)-based SCPNs were prepared and these catalysts were screened in vitro and studied in cellular environments for the carbamate cleavage reaction of rhodamine-based substrates. This is a model reaction for the uncaging of bioactive compounds such as cytotoxic drugs for catalysis-based cancer therapy. We observed that the rate of the deprotection depends on both the organometallic catalysts and the nature of the protective group. The rate reduces from in vitro to the biological environment, indicating a strong influence of biomolecules on catalyst performance. The Cu(I)-based SCPNs in combination with the dimethylpropargyloxycarbonyl protective group showed the best performances both in vitro and in biological environment, making this group promising in biomedical applications.
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Affiliation(s)
- Yiliu Liu
- Laboratory
for Macromolecular and Organic Chemistry and Institute for Complex
Molecular Systems, Eindhoven University
of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Sílvia Pujals
- Institute
for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Carrer de Baldiri Reixac 15-21, 08028 Barcelona, Spain
| | - Patrick J. M. Stals
- Laboratory
for Macromolecular and Organic Chemistry and Institute for Complex
Molecular Systems, Eindhoven University
of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Thomas Paulöhrl
- Laboratory
for Macromolecular and Organic Chemistry and Institute for Complex
Molecular Systems, Eindhoven University
of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Stanislav I. Presolski
- Laboratory
for Macromolecular and Organic Chemistry and Institute for Complex
Molecular Systems, Eindhoven University
of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - E. W. Meijer
- Laboratory
for Macromolecular and Organic Chemistry and Institute for Complex
Molecular Systems, Eindhoven University
of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Lorenzo Albertazzi
- Institute
for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Carrer de Baldiri Reixac 15-21, 08028 Barcelona, Spain
| | - Anja R. A. Palmans
- Laboratory
for Macromolecular and Organic Chemistry and Institute for Complex
Molecular Systems, Eindhoven University
of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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41
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Favre C, de Cremoux L, Badaut J, Friscourt F. Sydnone Reporters for Highly Fluorogenic Copper-Free Click Ligations. J Org Chem 2018; 83:2058-2066. [DOI: 10.1021/acs.joc.7b03004] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Camille Favre
- Institut Européen de Chimie et Biologie, Université de Bordeaux, 2 rue Robert Escarpit, 33607 Pessac, France
- Institut de Neurosciences Cognitives et Intégratives d’Aquitaine, CNRS UMR5287, Bordeaux, France
| | - Lucie de Cremoux
- Institut Européen de Chimie et Biologie, Université de Bordeaux, 2 rue Robert Escarpit, 33607 Pessac, France
- Institut de Neurosciences Cognitives et Intégratives d’Aquitaine, CNRS UMR5287, Bordeaux, France
| | - Jerome Badaut
- Institut de Neurosciences Cognitives et Intégratives d’Aquitaine, CNRS UMR5287, Bordeaux, France
- Basic
Science Department, Loma Linda University, Loma Linda, California 92350, United States
| | - Frédéric Friscourt
- Institut Européen de Chimie et Biologie, Université de Bordeaux, 2 rue Robert Escarpit, 33607 Pessac, France
- Institut de Neurosciences Cognitives et Intégratives d’Aquitaine, CNRS UMR5287, Bordeaux, France
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42
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Uno SN, Kamiya M, Morozumi A, Urano Y. A green-light-emitting, spontaneously blinking fluorophore based on intramolecular spirocyclization for dual-colour super-resolution imaging. Chem Commun (Camb) 2018; 54:102-105. [DOI: 10.1039/c7cc07783a] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We have developed the first green-light-emitting, spontaneously blinking fluorophore (SBF), HEtetTFER.
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Affiliation(s)
- Shin-nosuke Uno
- Graduate School of Pharmaceutical Sciences
- The University of Tokyo
- Tokyo 113-0033
- Japan
| | - Mako Kamiya
- Graduate School of Medicine
- The University of Tokyo
- Tokyo 113-0033
- Japan
- PRESTO
| | - Akihiko Morozumi
- Graduate School of Pharmaceutical Sciences
- The University of Tokyo
- Tokyo 113-0033
- Japan
| | - Yasuteru Urano
- Graduate School of Pharmaceutical Sciences
- The University of Tokyo
- Tokyo 113-0033
- Japan
- Graduate School of Medicine
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43
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Bhattacharjee P, Dasgupta D, Sengupta K. DCM associated LMNA mutations cause distortions in lamina structure and assembly. Biochim Biophys Acta Gen Subj 2017; 1861:2598-2608. [PMID: 28844980 DOI: 10.1016/j.bbagen.2017.08.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 08/01/2017] [Accepted: 08/11/2017] [Indexed: 11/22/2022]
Abstract
BACKGROUND A and B-type lamins are integral scaffolding components of the nuclear lamina which impart rigidity and shape to all metazoan nuclei. Over 450 mutations in A-type lamins are associated with 16 human diseases including dilated cardiomyopathy (DCM). Here, we show that DCM mutants perturb the self-association of lamin A (LA) and it's binding with lamin B1 (LB1). METHODS We used confocal and superresolution microscopy (NSIM) to study the effect of LA mutants on the nuclear lamina. We further used circular dichroism, fluorescence spectroscopy and isothermal titration calorimetry (ITC) to probe the structural modulations, self-association and heteropolymeric association of mutant LA. RESULTS Transfection of mutants in cultured cell lines result in the formation of nuclear aggregates of varied size and distribution. Endogenous LB1 is sequestered into these aggregates. This is consistent with the ten-fold increase in association constant of the mutant proteins compared to the wild type. These mutants exhibit differential heterotypic interaction with LB1, along with significant secondary and tertiary structural alterations of the interacting proteins. Thermodynamic studies demonstrate that the mutants bind to LB1 with different stoichiometry, affinity and energetics. CONCLUSIONS In this report we show that increased self-association propensity of mutant LA modulates the LA-LB1 interaction and precludes the formation of an otherwise uniform laminar network. GENERAL SIGNIFICANCE Our results might highlight the role of homotypic and heterotypic interactions of LA in the pathogenesis of DCM and hence laminopathies in the broader sense.
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Affiliation(s)
- Pritha Bhattacharjee
- Biophysics and Structural Genomics Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India
| | - Dipak Dasgupta
- Biophysics and Structural Genomics Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India.
| | - Kaushik Sengupta
- Biophysics and Structural Genomics Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India.
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44
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Razzano V, Paolino M, Reale A, Giuliani G, Artusi R, Caselli G, Visintin M, Makovec F, Donati A, Villafiorita-Monteleone F, Botta C, Cappelli A. Development of Imidazole-Reactive Molecules Leading to a New Aggregation-Induced Emission Fluorophore Based on the Cinnamic Scaffold. ACS OMEGA 2017; 2:5453-5459. [PMID: 31457813 PMCID: PMC6644839 DOI: 10.1021/acsomega.7b00789] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 08/21/2017] [Indexed: 06/10/2023]
Abstract
In order to obtain new fluorophores potentially useful in imidazole labeling and subsequent conjugation, a small series of Morita-Baylis-Hillman acetates (3a-c) was designed, synthesized, and reacted with imidazole. The optical properties of the corresponding imidazole derivatives 4a-c were analyzed both in solution and in the solid state. Although the solutions display a very weak emission, the powders show a blue emission, particularly enhanced in the case of compound 4c possessing two methoxy groups in the cinnamic scaffold. The photophysical study confirmed the hypothesis that the molecular rigidity of the solid state enhances the emission properties of these compounds by triggering the restriction of intramolecular motions, paving the way for their applications in fluorogenic labeling.
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Affiliation(s)
- Vincenzo Razzano
- Dipartimento
di Biotecnologie, Chimica e Farmacia and European Research Centre
for Drug Discovery and Development, Università
di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Marco Paolino
- Dipartimento
di Biotecnologie, Chimica e Farmacia and European Research Centre
for Drug Discovery and Development, Università
di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Annalisa Reale
- Dipartimento
di Biotecnologie, Chimica e Farmacia and European Research Centre
for Drug Discovery and Development, Università
di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Germano Giuliani
- Dipartimento
di Biotecnologie, Chimica e Farmacia and European Research Centre
for Drug Discovery and Development, Università
di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Roberto Artusi
- Rottapharm
Biotech S.p.A., Via Valosa
di Sopra 9, 20900 Monza, Italy
| | | | - Michela Visintin
- Rottapharm
Biotech S.p.A., Via Valosa
di Sopra 9, 20900 Monza, Italy
| | - Francesco Makovec
- Rottapharm
Biotech S.p.A., Via Valosa
di Sopra 9, 20900 Monza, Italy
| | - Alessandro Donati
- Dipartimento
di Biotecnologie, Chimica e Farmacia and European Research Centre
for Drug Discovery and Development, Università
di Siena, Via A. Moro 2, 53100 Siena, Italy
| | | | - Chiara Botta
- Istituto
per lo Studio delle Macromolecole (CNR), Via A. Corti 12, 20133 Milano, Italy
| | - Andrea Cappelli
- Dipartimento
di Biotecnologie, Chimica e Farmacia and European Research Centre
for Drug Discovery and Development, Università
di Siena, Via A. Moro 2, 53100 Siena, Italy
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45
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Grimm J, Brown TA, Tkachuk AN, Lavis LD. General Synthetic Method for Si-Fluoresceins and Si-Rhodamines. ACS CENTRAL SCIENCE 2017; 3:975-985. [PMID: 28979939 PMCID: PMC5620978 DOI: 10.1021/acscentsci.7b00247] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Indexed: 05/24/2023]
Abstract
The century-old fluoresceins and rhodamines persist as flexible scaffolds for fluorescent and fluorogenic compounds. Extensive exploration of these xanthene dyes has yielded general structure-activity relationships where the development of new probes is limited only by imagination and organic chemistry. In particular, replacement of the xanthene oxygen with silicon has resulted in new red-shifted Si-fluoresceins and Si-rhodamines, whose high brightness and photostability enable advanced imaging experiments. Nevertheless, efforts to tune the chemical and spectral properties of these dyes have been hindered by difficult synthetic routes. Here, we report a general strategy for the efficient preparation of Si-fluoresceins and Si-rhodamines from readily synthesized bis(2-bromophenyl)silane intermediates. These dibromides undergo metal/bromide exchange to give bis-aryllithium or bis(aryl Grignard) intermediates, which can then add to anhydride or ester electrophiles to afford a variety of Si-xanthenes. This strategy enabled efficient (3-5 step) syntheses of known and novel Si-fluoresceins, Si-rhodamines, and related dye structures. In particular, we discovered that previously inaccessible tetrafluorination of the bottom aryl ring of the Si-rhodamines resulted in dyes with improved visible absorbance in solution, and a convenient derivatization through fluoride-thiol substitution. This modular, divergent synthetic method will expand the palette of accessible xanthenoid dyes across the visible spectrum, thereby pushing further the frontiers of biological imaging.
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46
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A general method to fine-tune fluorophores for live-cell and in vivo imaging. Nat Methods 2017; 14:987-994. [PMID: 28869757 PMCID: PMC5621985 DOI: 10.1038/nmeth.4403] [Citation(s) in RCA: 393] [Impact Index Per Article: 56.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 07/25/2017] [Indexed: 12/18/2022]
Abstract
Pushing the frontier of fluorescence microscopy requires the design of enhanced fluorophores with finely tuned properties. We recently discovered that incorporation of four-membered azetidine rings into classic fluorophore structures elicits substantial increases in brightness and photostability, resulting in the ‘Janelia Fluor’ (JF) series of dyes. Here, we refine and extend this strategy, showing that incorporation of 3-substituted azetidine groups allows rational tuning of the spectral and chemical properties with unprecedented precision. This strategy yields a palette of new fluorescent and fluorogenic labels with excitation ranging from blue to the far-red with utility in cells, tissue, and animals.
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47
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Lavis LD. Teaching Old Dyes New Tricks: Biological Probes Built from Fluoresceins and Rhodamines. Annu Rev Biochem 2017; 86:825-843. [DOI: 10.1146/annurev-biochem-061516-044839] [Citation(s) in RCA: 142] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Luke D. Lavis
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, Virginia 20147
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48
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Li D, Li Z, Chen W, Yang X. Imaging and Detection of Carboxylesterase in Living Cells and Zebrafish Pretreated with Pesticides by a New Near-Infrared Fluorescence Off-On Probe. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:4209-4215. [PMID: 28475833 DOI: 10.1021/acs.jafc.7b00959] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A new near-infrared fluorescence off-on probe was developed and applied to fluorescence imaging of carboxylesterase in living HepG-2 cells and zebrafish pretreated with pesticides (carbamate, organophosphorus, and pyrethroid). The probe was readily prepared by connecting (4-acetoxybenzyl)oxy as a quenching and recognizing moiety to a stable hemicyanine skeleton that can be formed via the decomposition of IR-780. The fluorescence off-on response of the probe to carboxylesterase is based on the enzyme-catalyzed spontaneous hydrolysis of the carboxylic ester bond, followed by a further fragmentation of the phenylmethyl unit and thereby the fluorophore release. Compared with the only existing near-infrared carboxylesterase probe, the proposed probe exhibits superior analytical performance, such as near-infrared fluorescence emission over 700 nm as well as high selectivity and sensitivity, with a detection limit of 4.5 × 10-3 U/mL. More importantly, the probe is cell membrane permeable, and its applicability has been successfully demonstrated for monitoring carboxylesterase activity in living HepG-2 cells and zebrafish pretreated with pesticides, revealing that pesticides can effectively inhibit the activity of carboxylesterase. The superior properties of the probe make it of great potential use in indicating pesticide exposure.
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Affiliation(s)
- Dongyu Li
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, College of Food Engineering and Nutritional Science, Shaanxi Normal University , Xi'an 710062, China
| | - Zhao Li
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, College of Food Engineering and Nutritional Science, Shaanxi Normal University , Xi'an 710062, China
| | - Weihua Chen
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences , Beijing 100193, China
| | - Xingbin Yang
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, College of Food Engineering and Nutritional Science, Shaanxi Normal University , Xi'an 710062, China
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49
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Arivazhagan C, Maity A, Bakthavachalam K, Jana A, Panigrahi SK, Suresh E, Das A, Ghosh S. Phenothiazinyl Boranes: A New Class of AIE Luminogens with Mega Stokes Shift, Mechanochromism, and Mechanoluminescence. Chemistry 2017; 23:7046-7051. [DOI: 10.1002/chem.201700187] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Indexed: 11/07/2022]
Affiliation(s)
- C. Arivazhagan
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600 036 India
| | - Arunava Maity
- CSIR-Central Salt and Marine Chemicals Research Institute; Bhavnagar 364 002 India
| | - K. Bakthavachalam
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600 036 India
| | - Arijit Jana
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600 036 India
| | - Suraj Kumar Panigrahi
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600 036 India
| | - Eringathodi Suresh
- CSIR-Central Salt and Marine Chemicals Research Institute; Bhavnagar 364 002 India
| | - Amitava Das
- CSIR-Central Salt and Marine Chemicals Research Institute; Bhavnagar 364 002 India
| | - Sundargopal Ghosh
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600 036 India
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50
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Chyan W, Kilgore HR, Gold B, Raines RT. Electronic and Steric Optimization of Fluorogenic Probes for Biomolecular Imaging. J Org Chem 2017; 82:4297-4304. [PMID: 28345343 PMCID: PMC5519408 DOI: 10.1021/acs.joc.7b00285] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Fluorogenic probes are invaluable tools for spatiotemporal investigations within live cells. In common fluorogenic probes, the intrinsic fluorescence of a small-molecule fluorophore is masked by esterification until entry into a cell, where endogenous esterases catalyze the hydrolysis of the masking groups, generating fluorescence. The susceptibility of masking groups to spontaneous hydrolysis is a major limitation of these probes. Previous attempts to address this problem have incorporated auto-immolative linkers at the cost of atom economy and synthetic adversity. Here, we report on a linker-free strategy that employs adventitious electronic and steric interactions in easy-to-synthesize probes. We find that X···C═O n→π* interactions and acyl group size are optimized in 2',7'-dichlorofluorescein diisobutyrate. This probe is relatively stable to spontaneous hydrolysis but is a highly reactive substrate for esterases both in vitro and in cellulo, yielding a bright, photostable fluorophore with utility in biomolecular imaging.
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Affiliation(s)
- Wen Chyan
- Department of Chemistry, University of Wisconsin–Madison, Madison, Wisconsin 53706, United States
| | - Henry R. Kilgore
- Graduate Program in Biophysics, University of Wisconsin–Madison, Madison, Wisconsin 53706, United States
| | - Brian Gold
- Department of Chemistry, University of Wisconsin–Madison, Madison, Wisconsin 53706, United States
| | - Ronald T. Raines
- Department of Chemistry, University of Wisconsin–Madison, Madison, Wisconsin 53706, United States
- Department of Biochemistry, University of Wisconsin–Madison, Madison, Wisconsin 53706, United States
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