101
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Hu G, Zhang B, Zhou P, Hou Y, Jia H, Liu Y, Gan L, Zhang H, Mao Y, Fang J. Depletion of protein thiols and the accumulation of oxidized thioredoxin in Parkinsonism disclosed by a red-emitting and environment-sensitive probe. J Mater Chem B 2019; 7:2696-2702. [DOI: 10.1039/c8tb03101k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Protein sulfhydryl groups play a vital role in maintaining cellular redox homeostasis and protein functions and have attracted increasing interests for the selective detection of protein thiols over low-molecular-weight thiols (LMWTs).
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102
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Zhang Y, Yuan L, Jia S, Liu X, Zhao J, Yin G. Dicyanovinyl substituted push–pull chromophores: effects of central CC/phenyl spacers, crystal structures and application in hydrazine sensing. Phys Chem Chem Phys 2019; 21:3218-3226. [DOI: 10.1039/c8cp07127f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The distinctive effect of the CC bond and the phenyl bridge on the photophysical and chemical properties of D–π–A molecular systems has been comparatively investigated.
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Affiliation(s)
- Yuecheng Zhang
- School of Chemical Engineering and Technology
- Hebei University of Technology
- Tianjin 300130
- P. R. China
| | - Longfei Yuan
- School of Chemical Engineering and Technology
- Hebei University of Technology
- Tianjin 300130
- P. R. China
| | - Shang Jia
- School of Chemical Engineering and Technology
- Hebei University of Technology
- Tianjin 300130
- P. R. China
| | - Xiao Liu
- School of Chemical Engineering and Technology
- Hebei University of Technology
- Tianjin 300130
- P. R. China
| | - Jiquan Zhao
- School of Chemical Engineering and Technology
- Hebei University of Technology
- Tianjin 300130
- P. R. China
| | - Guohui Yin
- School of Chemical Engineering and Technology
- Hebei University of Technology
- Tianjin 300130
- P. R. China
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103
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Li H, Xin C, Zhang G, Han X, Qin W, Zhang CW, Yu C, Jing S, Li L, Huang W. A mitochondria-targeted two-photon fluorogenic probe for the dual-imaging of viscosity and H2O2 levels in Parkinson's disease models. J Mater Chem B 2019. [DOI: 10.1039/c9tb00576e] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Novel two-photon fluorogenic probe could simultaneously monitor changes in the mitochondrial viscosity and H2O2 levels using two different channels.
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Affiliation(s)
- Hao Li
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Nanjing Tech University (NanjingTech)
- Nanjing
- P. R. China
| | - Chenqi Xin
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Nanjing Tech University (NanjingTech)
- Nanjing
- P. R. China
| | - Gaobin Zhang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Nanjing Tech University (NanjingTech)
- Nanjing
- P. R. China
| | - Xisi Han
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Nanjing Tech University (NanjingTech)
- Nanjing
- P. R. China
| | - Wenjing Qin
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Nanjing Tech University (NanjingTech)
- Nanjing
- P. R. China
| | - Cheng-wu Zhang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Nanjing Tech University (NanjingTech)
- Nanjing
- P. R. China
| | - Changmin Yu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Nanjing Tech University (NanjingTech)
- Nanjing
- P. R. China
| | - Su Jing
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Lin Li
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Nanjing Tech University (NanjingTech)
- Nanjing
- P. R. China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Nanjing Tech University (NanjingTech)
- Nanjing
- P. R. China
- Shaanxi Institute of Flexible Electronics (SIFE)
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104
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Collot M, Bou S, Fam TK, Richert L, Mély Y, Danglot L, Klymchenko AS. Probing Polarity and Heterogeneity of Lipid Droplets in Live Cells Using a Push–Pull Fluorophore. Anal Chem 2018; 91:1928-1935. [DOI: 10.1021/acs.analchem.8b04218] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Mayeul Collot
- Laboratoire de Biophotonique et Pathologies, Faculté de Pharmacie, UMR 7021 CNRS, Université de Strasbourg, 74, Route du Rhin, 67401 Cedex, Illkirch, France
| | - Sophie Bou
- Laboratoire de Biophotonique et Pathologies, Faculté de Pharmacie, UMR 7021 CNRS, Université de Strasbourg, 74, Route du Rhin, 67401 Cedex, Illkirch, France
| | - Tkhe Kyong Fam
- Laboratoire de Biophotonique et Pathologies, Faculté de Pharmacie, UMR 7021 CNRS, Université de Strasbourg, 74, Route du Rhin, 67401 Cedex, Illkirch, France
| | - Ludovic Richert
- Laboratoire de Biophotonique et Pathologies, Faculté de Pharmacie, UMR 7021 CNRS, Université de Strasbourg, 74, Route du Rhin, 67401 Cedex, Illkirch, France
| | - Yves Mély
- Laboratoire de Biophotonique et Pathologies, Faculté de Pharmacie, UMR 7021 CNRS, Université de Strasbourg, 74, Route du Rhin, 67401 Cedex, Illkirch, France
| | - Lydia Danglot
- Institut Jacques Monod, University Paris Diderot, Sorbonne Paris Cité, CNRS UMR 7592, 75013 Paris, France
- Membrane Traffic in Healthy and Diseased Brain, INSERM U894, Institute of Psychiatry and Neuroscience of Paris, 102 rue de la Santé, 75 014 Paris, France
| | - Andrey S. Klymchenko
- Laboratoire de Biophotonique et Pathologies, Faculté de Pharmacie, UMR 7021 CNRS, Université de Strasbourg, 74, Route du Rhin, 67401 Cedex, Illkirch, France
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105
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Fixable Molecular Thermometer for Real-Time Visualization and Quantification of Mitochondrial Temperature. Anal Chem 2018; 90:13953-13959. [PMID: 30422634 DOI: 10.1021/acs.analchem.8b03395] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A change of mitochondrial temperature can be an important indicator of mitochondrial metabolism that generates considerable heat. For this reason, development of fluorescent probes to detect mitochondrial temperature has become an attractive topic. Previous efforts have successfully addressed the major issues, such as temperature sensitivity and mitochondrial targetability. However, there remains a key obstacle to practical applications. Considering the highly dynamic features of mitochondria, especially the variation of the inner-membrane potential, it is quite necessary to permanently immobilize a temperature probe in mitochondria in order to avoid unstable intracellular localization along with the changes of mitochondrial status. Herein, we report Mito-TEM, the first fixable, fluorescent molecular thermometer. Mito-TEM is based on a positively charged rhodamine B fluorophore that has the tendency of being attracted to mitochondria, which have negative potential. This fluorophore containing rotatable substituents also contributes to the temperature-responsive fluorescence property. Most importantly, a benzaldehyde is introduced in Mito-TEM as an anchoring unit that condenses with aminos of the protein and thus immobilizes the probe in mitochondria. The specific immobilization of Mito-TEM in mitochondria is unambiguously demonstrated in colocalization imaging. By using Mito-TEM, a method of visualizing and quantifying a temperature distribution through grayscale imaging of mitochondria is established and further applied to monitor the temperature changes of live cells under light heating and PMA stimulation.
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106
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107
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Colom A, Derivery E, Soleimanpour S, Tomba C, Molin MD, Sakai N, González-Gaitán M, Matile S, Roux A. A fluorescent membrane tension probe. Nat Chem 2018; 10:1118-1125. [PMID: 30150727 PMCID: PMC6197433 DOI: 10.1038/s41557-018-0127-3] [Citation(s) in RCA: 299] [Impact Index Per Article: 49.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 07/25/2018] [Indexed: 12/24/2022]
Abstract
Cells and organelles are delimited by lipid bilayers in which high deformability is essential to many cell processes, including motility, endocytosis and cell division. Membrane tension is therefore a major regulator of the cell processes that remodel membranes, albeit one that is very hard to measure in vivo. Here we show that a planarizable push-pull fluorescent probe called FliptR (fluorescent lipid tension reporter) can monitor changes in membrane tension by changing its fluorescence lifetime as a function of the twist between its fluorescent groups. The fluorescence lifetime depends linearly on membrane tension within cells, enabling an easy quantification of membrane tension by fluorescence lifetime imaging microscopy. We further show, using model membranes, that this linear dependency between lifetime of the probe and membrane tension relies on a membrane-tension-dependent lipid phase separation. We also provide calibration curves that enable accurate measurement of membrane tension using fluorescence lifetime imaging microscopy.
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Affiliation(s)
- Adai Colom
- Biochemistry Department, University of Geneva, Geneva, Switzerland
- Swiss National Centre for Competence in Research Programme Chemical Biology, Geneva, Switzerland
- School of Chemistry and Biochemistry, University of Geneva, Geneva, Switzerland
| | - Emmanuel Derivery
- Biochemistry Department, University of Geneva, Geneva, Switzerland
- Swiss National Centre for Competence in Research Programme Chemical Biology, Geneva, Switzerland
- School of Chemistry and Biochemistry, University of Geneva, Geneva, Switzerland
- MRC Laboratory of Molecular Biology, Cambridge Biomedical Campus, Cambridge, UK
| | - Saeideh Soleimanpour
- Swiss National Centre for Competence in Research Programme Chemical Biology, Geneva, Switzerland
- School of Chemistry and Biochemistry, University of Geneva, Geneva, Switzerland
| | - Caterina Tomba
- Biochemistry Department, University of Geneva, Geneva, Switzerland
- School of Chemistry and Biochemistry, University of Geneva, Geneva, Switzerland
| | - Marta Dal Molin
- Swiss National Centre for Competence in Research Programme Chemical Biology, Geneva, Switzerland
- School of Chemistry and Biochemistry, University of Geneva, Geneva, Switzerland
| | - Naomi Sakai
- Swiss National Centre for Competence in Research Programme Chemical Biology, Geneva, Switzerland
- School of Chemistry and Biochemistry, University of Geneva, Geneva, Switzerland
| | - Marcos González-Gaitán
- Biochemistry Department, University of Geneva, Geneva, Switzerland
- Swiss National Centre for Competence in Research Programme Chemical Biology, Geneva, Switzerland
- School of Chemistry and Biochemistry, University of Geneva, Geneva, Switzerland
| | - Stefan Matile
- Swiss National Centre for Competence in Research Programme Chemical Biology, Geneva, Switzerland
- School of Chemistry and Biochemistry, University of Geneva, Geneva, Switzerland
| | - Aurélien Roux
- Biochemistry Department, University of Geneva, Geneva, Switzerland.
- Swiss National Centre for Competence in Research Programme Chemical Biology, Geneva, Switzerland.
- School of Chemistry and Biochemistry, University of Geneva, Geneva, Switzerland.
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108
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Lee SC, Heo J, Woo HC, Lee JA, Seo YH, Lee CL, Kim S, Kwon OP. Fluorescent Molecular Rotors for Viscosity Sensors. Chemistry 2018; 24:13706-13718. [DOI: 10.1002/chem.201801389] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 04/25/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Seung-Chul Lee
- Department of Molecular Science and Technology; Ajou University; Suwon 443-749 Republic of Korea
| | - Jeongyun Heo
- Center for Theragnosis; Korea Institute of Science and Technology (KIST); 39-1 Hawolgok-dong Seongbuk-gu Seoul 136-791 Korea
| | - Hee Chul Woo
- Advanced Photonics Research Institute (APRI); Gwangju Institute of Science and Technology (GIST); Gwangju 61005 Republic of Korea
| | - Ji-Ah Lee
- Department of Molecular Science and Technology; Ajou University; Suwon 443-749 Republic of Korea
| | - Young Hun Seo
- Center for Theragnosis; Korea Institute of Science and Technology (KIST); 39-1 Hawolgok-dong Seongbuk-gu Seoul 136-791 Korea
| | - Chang-Lyoul Lee
- Advanced Photonics Research Institute (APRI); Gwangju Institute of Science and Technology (GIST); Gwangju 61005 Republic of Korea
| | - Sehoon Kim
- Center for Theragnosis; Korea Institute of Science and Technology (KIST); 39-1 Hawolgok-dong Seongbuk-gu Seoul 136-791 Korea
- Division of Bio-Medical Science & Technology; KIST School; Korea University of Science and Technology (UST); Seoul 02792 Korea
- KU-KIST Graduate School of Converging Science and Technology; Korea University; 145 Anam-ro Seongbuk-gu Seoul 02841 Korea
| | - O-Pil Kwon
- Department of Molecular Science and Technology; Ajou University; Suwon 443-749 Republic of Korea
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109
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Chen W, Gao C, Liu X, Liu F, Wang F, Tang LJ, Jiang JH. Engineering Organelle-Specific Molecular Viscosimeters Using Aggregation-Induced Emission Luminogens for Live Cell Imaging. Anal Chem 2018; 90:8736-8741. [PMID: 30004212 DOI: 10.1021/acs.analchem.8b02940] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Subcellular viscosity is essential for cell functions and may indicate its physiological status. We screen two fluorescent probes by engineering tetraphenylethene (TPE) for measuring viscosity in mitochondria and lysosomes, respectively. These two probes are only weakly emissive in nonviscous medium and the emission signals are greatly enhanced in viscous medium due to the restriction of intramolecular motion. The presence of pyridium has endowed one probe with mitochondrial specificity, while the presence of indole ring has granted the other probe with lysosome-targeting ability. Their optical properties are characterized in vitro and their applications in imaging viscosity variations in mitochondria and lysosomes are also demonstrated in living cells under different stimulated processes. In addition, an increase in both mitochondrial and lysosomal viscosity during mitophagy was revealed for the first time with our probes. To our knowledge, this is the first time that TPE is engineered to be fluorescent molecular viscosimeters that possess desirable aqueous solubility, red-shifted emission, and organelle specificity.
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Affiliation(s)
- Wen Chen
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering , Hunan University , Changsha 410082 , P. R. China
| | - Cai Gao
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering , Hunan University , Changsha 410082 , P. R. China
| | - Xianjun Liu
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering , Hunan University , Changsha 410082 , P. R. China
| | - Feng Liu
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering , Hunan University , Changsha 410082 , P. R. China
| | - Fenglin Wang
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering , Hunan University , Changsha 410082 , P. R. China
| | - Li-Juan Tang
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering , Hunan University , Changsha 410082 , P. R. China
| | - Jian-Hui Jiang
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering , Hunan University , Changsha 410082 , P. R. China
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110
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Belding L, Guest M, Le Sueur R, Dudding T. Fluorescence of Cyclopropenium Ion Derivatives. J Org Chem 2018; 83:6489-6497. [DOI: 10.1021/acs.joc.8b00770] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Lee Belding
- Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Matt Guest
- Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Richard Le Sueur
- Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Travis Dudding
- Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
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111
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Sheet SK, Sen B, Patra SK, Rabha M, Aguan K, Khatua S. Aggregation-Induced Emission-Active Ruthenium(II) Complex of 4,7-Dichloro Phenanthroline for Selective Luminescent Detection and Ribosomal RNA Imaging. ACS APPLIED MATERIALS & INTERFACES 2018; 10:14356-14366. [PMID: 29683310 DOI: 10.1021/acsami.7b19290] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The development of red emissive aggregation-induced emission (AIE) active probes for organelle-specific imaging is of great importance. Construction of metal complex-based AIE-active materials with metal-to-ligand charge transfer (MLCT), ligand-to-metal charge transfer (LMCT) emission together with the ligand-centered and intraligand (LC/ILCT) emission is a challenging task. We developed a red emissive ruthenium(II) complex, 1[PF6]2, and its perchlorate analogues of the 4,7-dichloro phenanthroline ligand. 1[PF6]2 has been characterized by spectroscopic and single-crystal X-ray diffraction. Complex 1 showed AIE enhancement in water, highly dense polyethylene glycol media, and also in the solid state. The possible reason behind the AIE property may be the weak supramolecular π···π, C-H···π, and C-Cl···H interactions between neighboring phen ligands as well as C-Cl···O halogen bonding (XB). The crystal structures of the two perchlorate analogues revealed C-Cl···O distances shorter than the sum of the van der Waals radii, which confirmed the XB interaction. The AIE property was supported by scanning electron microscopy, transmission electron microscopy, dynamic light scattering, and atomic force microscopy studies. Most importantly, the probe was found to be low cytotoxicity and to efficiently permeate the cell membrane. The cell-imaging experiments revealed rapid staining of the nucleolus in HeLa cells via the interaction with nucleolar ribosomal ribonucleic acid (rRNA). It is expected that the supramolecular interactions as well as C-Cl···O XB interaction with rRNA is the origin of aggregation and possible photoluminescence enhancement. To the best of our knowledge, this is the first report of red emissive ruthenium(II) complex-based probes with AIE characteristics for selective rRNA detection and nucleolar imaging.
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112
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113
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Murale DP, Hong SC, Haque MM, Lee JS. Chloro-Functionalized Photo-crosslinking BODIPY for Glutathione Sensing and Subcellular Trafficking. Chembiochem 2018. [DOI: 10.1002/cbic.201800059] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Dhiraj P. Murale
- Molecular Recognition Research Center; Korea Institute of Science and Technology; 5 Hwarang-ro 14gil Seongbuk-gu Seoul 02792 Republic of Korea
| | - Seong Cheol Hong
- Molecular Recognition Research Center; Korea Institute of Science and Technology; 5 Hwarang-ro 14gil Seongbuk-gu Seoul 02792 Republic of Korea
- Department of Biological Chemistry; KIST-School UST; 5 Hwarang-ro 14-gil Seongbuk-gu Seoul 02792 Republic of Korea
| | - Md Mamunul Haque
- Molecular Recognition Research Center; Korea Institute of Science and Technology; 5 Hwarang-ro 14gil Seongbuk-gu Seoul 02792 Republic of Korea
| | - Jun-Seok Lee
- Molecular Recognition Research Center; Korea Institute of Science and Technology; 5 Hwarang-ro 14gil Seongbuk-gu Seoul 02792 Republic of Korea
- Department of Biological Chemistry; KIST-School UST; 5 Hwarang-ro 14-gil Seongbuk-gu Seoul 02792 Republic of Korea
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114
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Otto JP, Wang L, Pochorovski I, Blau SM, Aspuru-Guzik A, Bao Z, Engel GS, Chiu M. Disentanglement of excited-state dynamics with implications for FRET measurements: two-dimensional electronic spectroscopy of a BODIPY-functionalized cavitand. Chem Sci 2018; 9:3694-3703. [PMID: 29780500 PMCID: PMC5935064 DOI: 10.1039/c8sc00818c] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Accepted: 03/15/2018] [Indexed: 12/14/2022] Open
Abstract
Two-dimensional electronic spectroscopy of energy transfer and competing dynamics highlights how conformational changes create issues with lifetime-based FRET measurements.
Förster Resonance Energy Transfer (FRET) is the incoherent transfer of an electronic excitation from a donor fluorophore to a nearby acceptor. FRET has been applied as a probe of local chromophore environments and distances on the nanoscale by extrapolating transfer efficiencies from standard experimental parameters, such as fluorescence intensities or lifetimes. Competition from nonradiative relaxation processes is often assumed to be constant in these extrapolations, but in actuality, this competition depends on the donor and acceptor environments and can, therefore, be affected by conformational changes. To study the effects of nonradiative relaxation on FRET dynamics, we perform two-dimensional electronic spectroscopy (2DES) on a pair of azaboraindacene (BODIPY) dyes, attached to opposite arms of a resorcin[4]arene cavitand. Temperature-induced switching between two equilibrium conformations, vase at 294 K to kite at 193 K, increases the donor–acceptor distance from 0.5 nm to 3 nm, affecting both FRET efficiency and nonradiative relaxation. By disentangling different dynamics based on lifetimes extracted from a series of 2D spectra, we independently observe nonradiative relaxation, FRET, and residual fluorescence from the donor in both vase to kite conformations. We observe changes in both FRET rate and nonradiative relaxation when the molecule switches from vase to kite, and measure a significantly greater difference in transfer efficiency between conformations than would be determined by standard lifetime-based measurements. These observations show that changes in competing nonradiative processes must be taken into account when highly accurate measurements of FRET efficiency are desired.
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Affiliation(s)
- John P Otto
- Department of Chemistry , University of Chicago , Chicago , IL 60637 , USA .
| | - Lili Wang
- Department of Chemistry , University of Chicago , Chicago , IL 60637 , USA .
| | - Igor Pochorovski
- Department of Chemical Engineering , Stanford University , Stanford , CA 94305 , USA . ;
| | - Samuel M Blau
- Department of Chemistry and Chemical Biology , Harvard University , Cambridge , MA 02138 , USA
| | - Alán Aspuru-Guzik
- Department of Chemistry and Chemical Biology , Harvard University , Cambridge , MA 02138 , USA.,Senior Fellow , Canadian Institute for Advanced Research , Toronto , Ontario M5G 1Z8 , Canada
| | - Zhenan Bao
- Department of Chemical Engineering , Stanford University , Stanford , CA 94305 , USA . ;
| | - Gregory S Engel
- Department of Chemistry , University of Chicago , Chicago , IL 60637 , USA .
| | - Melanie Chiu
- Department of Chemical Engineering , Stanford University , Stanford , CA 94305 , USA . ;
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115
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Dong J, Li X, Zhang K, Di Yuan Y, Wang Y, Zhai L, Liu G, Yuan D, Jiang J, Zhao D. Confinement of Aggregation-Induced Emission Molecular Rotors in Ultrathin Two-Dimensional Porous Organic Nanosheets for Enhanced Molecular Recognition. J Am Chem Soc 2018; 140:4035-4046. [DOI: 10.1021/jacs.7b13069] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Jinqiao Dong
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore
| | - Xu Li
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore
| | - Kang Zhang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore
| | - Yi Di Yuan
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore
| | - Yuxiang Wang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore
| | - Linzhi Zhai
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore
| | - Guoliang Liu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore
| | - Daqiang Yuan
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Jianwen Jiang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore
| | - Dan Zhao
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore
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116
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Collot M, Fam TK, Ashokkumar P, Faklaris O, Galli T, Danglot L, Klymchenko AS. Ultrabright and Fluorogenic Probes for Multicolor Imaging and Tracking of Lipid Droplets in Cells and Tissues. J Am Chem Soc 2018; 140:5401-5411. [PMID: 29446627 DOI: 10.1021/jacs.7b12817] [Citation(s) in RCA: 209] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Lipid droplets (LDs) are intracellular lipid-rich organelles that regulate the storage of neutral lipids and were recently found to be involved in many physiological processes, metabolic disorders, and diseases including obesity, diabetes, and cancers. Herein we present a family of new fluorogenic merocyanine fluorophores based on an indolenine moiety and a dioxaborine barbiturate derivative. These so-called StatoMerocyanines (SMCy) fluoresce from yellow to the near-infrared (NIR) in oil with an impressive fluorescence enhancement compared to aqueous media. Additionally, SMCy display remarkably high molar extinction coefficients (up to 390 000 M-1 cm-1) and high quantum yield values (up to 100%). All the members of this new family specifically stain the LDs in live cells with very low background noise. Unlike Nile Red, a well-known lipid droplet marker, SMCy dyes possess narrow absorption and emission bands in the visible, thus allowing multicolor imaging. SMCy proved to be compatible with fixation and led to high-quality 3D images of lipid droplets in cells and tissues. Their high brightness allowed efficient tissue imaging of adipocytes and circulating LDs. Moreover their remarkably high two-photon absorption cross-section, especially SMCy5.5 (up to 13 300 GM), as well as their capacity to efficiently fluoresce in the NIR region led to two-photon multicolor tissue imaging (liver). Taking advantage of the available color palette, lipid droplet exchange between cells was tracked and imaged, thus demonstrating intercellular communication.
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Affiliation(s)
- Mayeul Collot
- Laboratoire de Biophotonique et Pharmacologie, CNRS UMR 7213 , Université de Strasbourg, Faculté de Pharmacie , 74, Route du Rhin , 67401 Illkirch , France
| | - Tkhe Kyong Fam
- Laboratoire de Biophotonique et Pharmacologie, CNRS UMR 7213 , Université de Strasbourg, Faculté de Pharmacie , 74, Route du Rhin , 67401 Illkirch , France
| | - Pichandi Ashokkumar
- Laboratoire de Biophotonique et Pharmacologie, CNRS UMR 7213 , Université de Strasbourg, Faculté de Pharmacie , 74, Route du Rhin , 67401 Illkirch , France
| | - Orestis Faklaris
- ImagoSeine Core Facility, Institut Jacques Monod , Université Paris Diderot/CNRS, UMR 7593 , 15 Rue Hélène Brion , 75205 Paris CEDEX 13 , France
| | - Thierry Galli
- INSERM U894 , Centre de Psychiatrie et Neurosciences, "Membrane Traffic in Health and Diseased Brain" Team , 102-108 Rue de la Santé , 75014 Paris , France.,Université Paris Descartes , 75014 Paris , France
| | - Lydia Danglot
- INSERM U894 , Centre de Psychiatrie et Neurosciences, "Membrane Traffic in Health and Diseased Brain" Team , 102-108 Rue de la Santé , 75014 Paris , France.,Université Paris Descartes , 75014 Paris , France
| | - Andrey S Klymchenko
- Laboratoire de Biophotonique et Pharmacologie, CNRS UMR 7213 , Université de Strasbourg, Faculté de Pharmacie , 74, Route du Rhin , 67401 Illkirch , France
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117
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Dey N, Maji B, Bhattacharya S. Motion-Induced Changes in Emission as an Effective Strategy for the Ratiometric Probing of Human Serum Albumin and Trypsin in Biological Fluids. Chem Asian J 2018; 13:664-671. [DOI: 10.1002/asia.201701795] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 01/23/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Nilanjan Dey
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 India
| | - Basudeb Maji
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 India
| | - Santanu Bhattacharya
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 India
- Current Address: Indian Association for the Cultivation of Science; Kolkata 700032 India
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118
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He XP, Tian H. Lightening Up Membrane Receptors with Fluorescent Molecular Probes and Supramolecular Materials. Chem 2018. [DOI: 10.1016/j.chempr.2017.11.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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119
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Alamudi SH, Chang YT. Advances in the design of cell-permeable fluorescent probes for applications in live cell imaging. Chem Commun (Camb) 2018; 54:13641-13653. [DOI: 10.1039/c8cc08107g] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Advances in the design strategy of cell-permeable small fluorescent probes are discussed. Their applications in imaging specific cell types and intracellular bioanalytes, as well as the cellular environment in live conditions, are presented.
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Affiliation(s)
- Samira Husen Alamudi
- Singapore Bioimaging Consortium
- Agency for Science, Technology and Research (A*STAR)
- Singapore
- Singapore
| | - Young-Tae Chang
- Singapore Bioimaging Consortium
- Agency for Science, Technology and Research (A*STAR)
- Singapore
- Singapore
- Department of Chemistry
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120
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Li Y, Jia B, Chen B, Liu Q, Cai M, Xue Z, Fan Y, Wang HP, Su CY, Li G. MOF-derived Mn doped porous CoP nanosheets as efficient and stable bifunctional electrocatalysts for water splitting. Dalton Trans 2018; 47:14679-14685. [DOI: 10.1039/c8dt02706d] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mn-CoP nanosheets were synthesized from ZIF-67 via an etching-carbonization–phosphidation strategy and showed efficient electrocatalytic activity in both HER and OER under acidic and alkaline conditions.
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121
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Shaya J, Collot M, Bénailly F, Mahmoud N, Mély Y, Michel BY, Klymchenko AS, Burger A. Turn-on Fluorene Push-Pull Probes with High Brightness and Photostability for Visualizing Lipid Order in Biomembranes. ACS Chem Biol 2017; 12:3022-3030. [PMID: 29053920 DOI: 10.1021/acschembio.7b00658] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The rational design of environmentally sensitive dyes with superior properties is critical for elucidating the fundamental biological processes and understanding the biophysical behavior of cell membranes. In this study, a novel group of fluorene-based push-pull probes was developed for imaging membrane lipids. The design of these fluorogenic conjugates is based on a propioloyl linker to preserve the required spectroscopic features of the core dye. This versatile linker allowed the introduction of a polar deoxyribosyl head, a lipophilic chain, and an amphiphilic/anchoring group to tune the cell membrane binding and internalization. It was found that the deoxyribosyl head favored cell internalization and staining of intracellular membranes, whereas an amphiphilic anchor group ensured specific plasma membrane staining. The optimized fluorene probes presented a set of improvements as compared to commonly used environmentally sensitive membrane probe Laurdan such as red-shifted absorption matching the 405 nm diode laser excitation, a blue-green emission range complementary to the red fluorescent proteins, enhanced brightness and photostability, as well as preserved sensitivity to lipid order, as shown in model membranes and living cells.
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Affiliation(s)
- Janah Shaya
- Université Côte d’Azur, CNRS, Institut de Chimie de Nice, UMR 7272 − Parc Valrose, 06108 Nice cedex 2, France
| | - Mayeul Collot
- Laboratoire
de Biophotonique et Pharmacologie, UMR 7213, Faculté de Pharmacie, Université de Strasbourg, CNRS, 74 Route du Rhin, 67401 Illkirch, France
| | - Frédéric Bénailly
- Université Côte d’Azur, CNRS, Institut de Chimie de Nice, UMR 7272 − Parc Valrose, 06108 Nice cedex 2, France
| | - Najiba Mahmoud
- Université Côte d’Azur, CNRS, Institut de Chimie de Nice, UMR 7272 − Parc Valrose, 06108 Nice cedex 2, France
| | - Yves Mély
- Laboratoire
de Biophotonique et Pharmacologie, UMR 7213, Faculté de Pharmacie, Université de Strasbourg, CNRS, 74 Route du Rhin, 67401 Illkirch, France
| | - Benoît Y. Michel
- Université Côte d’Azur, CNRS, Institut de Chimie de Nice, UMR 7272 − Parc Valrose, 06108 Nice cedex 2, France
| | - Andrey S. Klymchenko
- Laboratoire
de Biophotonique et Pharmacologie, UMR 7213, Faculté de Pharmacie, Université de Strasbourg, CNRS, 74 Route du Rhin, 67401 Illkirch, France
| | - Alain Burger
- Université Côte d’Azur, CNRS, Institut de Chimie de Nice, UMR 7272 − Parc Valrose, 06108 Nice cedex 2, France
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