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Dye-labeled aromatic azides for multi-photon grafting. MONATSHEFTE FUR CHEMIE 2022. [DOI: 10.1007/s00706-022-03022-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
AbstractThe synthesis of two dye-labeled azides via de-symmetrization of 2,6-bis(4-azidobenzylidene)-4-methylcyclohexanone (BAC-M) with a copper(I)-catalyzed alkyne-azide cycloaddition (CuAAC) using fluorescent dyes is reported. An alkyne functionalized dansyl derivative and an alkyne functionalized perylene diimide derivative were used as the dyes. The photo-physical properties of these dye dyads are described, and their performance in multi-photon grafting onto polyethylene glycol-based hydrogels is investigated. While the dansyl-conjugated BAC derivate is well suited for multi-photon grafting with lasers operating at 800 nm, the perylene diimide-bearing dye does not give the desired result.
Graphical abstract
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2
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Sharma N, Gulati A. Pb 2+ sensing by coumarin sulphonamide hybrids in aqueous medium. LUMINESCENCE 2021; 36:1172-1180. [PMID: 33713392 DOI: 10.1002/bio.4042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 03/06/2021] [Accepted: 03/08/2021] [Indexed: 01/07/2023]
Abstract
Metals play an important role in various metabolic activities in the human body, but above desired concentrations, a role reversal occurs that causes deadly outcomes viz., cancer. Metals cannot be cracked down and are non-biodegradable. It is the bioaccumulation of toxic metals inside the biomatrices, that further intensifies the research on different means of metal detoxification from different matrices. Among heavy toxic metals lead is a brutal carcinogen that requires pitiless sensors for its capturing. The use of heterocycles for metal sensing in supramolecular chemistry is preferred due to the strong chelation they offer to toxic metals. The C1-C3 probes were synthesized and studied for their Pb2+ binding ability. All the probes were prepared by treating bromoacetyl coumarin with camphor sulphonamide, 5-dimethylamino-1-naphthalene sulphonamide, and methyl-2-amino-sulphonyl benzoate at room temperature. The probes show selective binding with Pb2+ ions in aqueous acetonitrile among different tested metal ions viz., Cu2+ , Zn2+ , Ni2+ , Mn2+, and Pb2+ ions as shown in ultraviolet (UV)-visible, nuclear magnetic resonance (NMR), and high-performance liquid chromatography (HPLC) studies. These sulphur-containing probes bind very well with Pb2+ ions by offering selectivity in binding positions that capture lead ions at their minimum possible concentration.
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Affiliation(s)
- Nidhi Sharma
- Academy of Scientific and Innovative Research (AcSIR), CSIR - Central Road Research Institute, (CRRI), New Delhi, India.,Food and Nutraceutical Division, CSIR - Institute of Himalayan Bioresource Technology, Palampur, India
| | - Ashu Gulati
- Food and Nutraceutical Division, CSIR - Institute of Himalayan Bioresource Technology, Palampur, India
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3
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Buonerba A, Lapenta R, Donniacuo A, Licasale M, Vezzoli E, Milione S, Capacchione C, Tecce MF, Falqui A, Piacentini R, Grassi C, Grassi A. NIR multiphoton ablation of cancer cells, fluorescence quenching and cellular uptake of dansyl-glutathione-coated gold nanoparticles. Sci Rep 2020; 10:11380. [PMID: 32647291 PMCID: PMC7347844 DOI: 10.1038/s41598-020-68397-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 06/24/2020] [Indexed: 12/14/2022] Open
Abstract
Theranostics based on two-photon excitation of therapeutics in the NIR region is an emerging and powerful tool in cancer therapy since this radiation deeply penetrates healthy biological tissues and produces selective cell death. Aggregates of gold nanoparticles coated with glutathione corona functionalized with the dansyl chromophore (a-DG-AuNPs) were synthesized and found efficient nanodevice for applications in photothermal therapy (PTT). Actually the nanoparticle aggregation enhances the quenching of radiative excitation and the consequent conversion into heat. The a-DG-AuNPs are readily internalized in Hep G2 where the chromophore acts as both antenna and transducer of the NIR radiation under two-photons excitation, determining efficient cell ablation via photothermal effect.
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Affiliation(s)
- Antonio Buonerba
- Sanitary Environmental Engineering Division (SEED), and Consorzio Inter-universitario Previsione e Prevenzione dei Grandi Rischi (Cu.G.Ri.), Department of Civil Engineering, University of Salerno, Via Giovanni Paolo II, 84084, Fisciano, SA, Italy. .,Department of Chemistry and Biology "Adolfo Zambelli", University of Salerno, Via Giovanni Paolo II, 84084, Fisciano, SA, Italy.
| | - Rosita Lapenta
- Department of Chemistry and Biology "Adolfo Zambelli", University of Salerno, Via Giovanni Paolo II, 84084, Fisciano, SA, Italy
| | - Anna Donniacuo
- Department of Chemistry and Biology "Adolfo Zambelli", University of Salerno, Via Giovanni Paolo II, 84084, Fisciano, SA, Italy
| | - Magda Licasale
- Department of Chemistry and Biology "Adolfo Zambelli", University of Salerno, Via Giovanni Paolo II, 84084, Fisciano, SA, Italy
| | - Elena Vezzoli
- Biological and Environmental Sciences and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Stefano Milione
- Department of Chemistry and Biology "Adolfo Zambelli", University of Salerno, Via Giovanni Paolo II, 84084, Fisciano, SA, Italy
| | - Carmine Capacchione
- Department of Chemistry and Biology "Adolfo Zambelli", University of Salerno, Via Giovanni Paolo II, 84084, Fisciano, SA, Italy
| | - Mario Felice Tecce
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 84084, Fisciano, SA, Italy
| | - Andrea Falqui
- Biological and Environmental Sciences and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
| | - Roberto Piacentini
- Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy. .,Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
| | - Claudio Grassi
- Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy.,Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Alfonso Grassi
- Department of Chemistry and Biology "Adolfo Zambelli", University of Salerno, Via Giovanni Paolo II, 84084, Fisciano, SA, Italy
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4
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Morales F, Campos JM, Conejo-García A. 1 H and 13 C NMR spectral data of p-nitrobenzenesulfonamides and dansylsulfonamides derived from N-alkylated o-(purinemethyl)anilines. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2016; 54:760-770. [PMID: 27108541 DOI: 10.1002/mrc.4442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 03/30/2016] [Accepted: 03/31/2016] [Indexed: 06/05/2023]
Affiliation(s)
- Fátima Morales
- Department of Pharmaceutical and Organic Chemistry, Faculty of Pharmacy, University of Granada, c/ Campus de Cartuja s/n, Granada, Spain
| | - Joaquín M Campos
- Department of Pharmaceutical and Organic Chemistry, Faculty of Pharmacy, University of Granada, c/ Campus de Cartuja s/n, Granada, Spain
| | - Ana Conejo-García
- Department of Pharmaceutical and Organic Chemistry, Faculty of Pharmacy, University of Granada, c/ Campus de Cartuja s/n, Granada, Spain
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5
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Morales F, Conejo-García A, Ramírez A, Morata C, Marchal JA, Campos JM. p-Nitrobenzenesulfonamides and their fluorescent dansylsulfonamides derived from N-alkylated o-(purine-methyl)anilines as novel antitumour agents. RSC Adv 2015. [DOI: 10.1039/c5ra13946e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
10 shows an IC50 = 134 nM (A-375). Its dansyl analogue is absorbed (P.O.) accumulating mainly in liver and kidney.
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Affiliation(s)
- Fátima Morales
- Department of Pharmaceutical and Organic Chemistry
- c/Campus de Cartuja s/n
- Faculty of Pharmacy
- University of Granada
- 18081 Granada
| | - Ana Conejo-García
- Department of Pharmaceutical and Organic Chemistry
- c/Campus de Cartuja s/n
- Faculty of Pharmacy
- University of Granada
- 18081 Granada
| | - Alberto Ramírez
- Department of Health Sciences
- Paraje de las Lagunillas s/n
- University of Jaén
- Jaén
- Spain
| | - Cynthia Morata
- Biopathology and Medicine Regenerative Institute (IBIMER)
- University of Granada
- Granada
- Spain
- Biosanitary Institute of Granada (ibs.GRANADA)
| | - Juan Antonio Marchal
- Biopathology and Medicine Regenerative Institute (IBIMER)
- University of Granada
- Granada
- Spain
- Biosanitary Institute of Granada (ibs.GRANADA)
| | - Joaquín M. Campos
- Department of Pharmaceutical and Organic Chemistry
- c/Campus de Cartuja s/n
- Faculty of Pharmacy
- University of Granada
- 18081 Granada
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6
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Guo L, Wong MS. Multiphoton excited fluorescent materials for frequency upconversion emission and fluorescent probes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:5400-5428. [PMID: 24981591 DOI: 10.1002/adma.201400084] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 04/17/2014] [Indexed: 06/03/2023]
Abstract
Recent progress in developing various strategies for exploiting efficient MPA fluorophores for two emerging technological MPA applications including frequency upconversion photoluminescence and lasing as well as 2PA fluorescence bioimaging and biosensing are presented. An intriguing application of MPA frequency-upconverted lasing offers opportunity for the fabrication of high-energy coherent light sources in the blue region which could create new advantages and breakthroughs in various laser-based applications. In addition, multiphoton excitation has led to considerable progress in the development of advanced diagnostic and therapeutic treatments; further advancement is anticipated with the emergence of various versatile 2PA fluorescence probes. It is widely appreciated that the two-photon excitation offers significant advantages for the biological fluorescence imaging and sensing which includes higher spatial resolution, less photobleaching and photodamage as well as deeper tissue penetration as compared to the one-photon excited microscopy. To be practically useful, the 2PA fluorescent probes for biological applications are required to have a site-specificity, a high fluorescence quantum yield, proper two-photon excitation and subsequent emission wavelengths, good photodecomposition stability, water solubility, and biocompatibility besides large 2PA action cross-sections.
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Affiliation(s)
- Lei Guo
- Institute of Molecular Functional Materials+, Department of Chemistry and Institute of Advanced Materials, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, China
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7
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Luo J, Chen LF, Hu P, Chen ZN. Tetranuclear Gadolinium(III) Porphyrin Complex as a Theranostic Agent for Multimodal Imaging and Photodynamic Therapy. Inorg Chem 2014; 53:4184-91. [PMID: 24693998 DOI: 10.1021/ic500238s] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Jian Luo
- State Key
Laboratory of Structural Chemistry, Fujian Institute of Research on
the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao
Road West, Fuzhou 350002, China
| | - Li-Feng Chen
- State Key
Laboratory of Structural Chemistry, Fujian Institute of Research on
the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao
Road West, Fuzhou 350002, China
| | - Ping Hu
- State Key
Laboratory of Structural Chemistry, Fujian Institute of Research on
the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao
Road West, Fuzhou 350002, China
| | - Zhong-Ning Chen
- State Key
Laboratory of Structural Chemistry, Fujian Institute of Research on
the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao
Road West, Fuzhou 350002, China
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8
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Ciuciu AI, Flamigni L, Skonieczny K, Gryko DT. Blue-green emitting sulphonamido-imidazole derivatives: ESIPT based excited state dynamics. Phys Chem Chem Phys 2013; 15:16907-16. [PMID: 24002612 DOI: 10.1039/c3cp52291a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Six imidazole derivatives characterized by the presence in their molecules of a sulphonamido group and able to display excited state intramolecular proton transfer (ESIPT) have been synthesized in a straightforward manner and the dynamics of their excited states investigated in detail in solvents of different polarity and proticity: toluene (TOL), dichloromethane (DCM) and methanol (MeOH). With the exception of one compound, these ESIPT-capable molecules are highly luminescent. The major emitting species at room temperature is the ketimine (K) tautomer but the weak emission from the enamide (E) form was detected in several cases. In general, the luminescence quantum yields (φfl) of the K form range between 0.4 and 0.6 with lifetimes of several nanoseconds, with radiative rate constants kr of the order of 10(8) s(-1). The lifetime of the E form, and hence of the ESIPT process, range between τ <10 ps up to 190 ps. At 77 K, in addition to hypsochromically shifted fluorescence bands from the E and/or K tautomers, E phosphorescence emissions with lifetimes in the range of seconds (0.4-2.5 s) are also detected. The triplet excited state absorbance of these molecules was probed in DCM and MeOH and both E (between 450-520 nm) and K (at about 420 nm) forms were identified. The triplet lifetimes at room temperature in air-free solutions are in the microsecond range, whereas the reaction rates with oxygen are of the order of 10(9) M(-1) s(-1).
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Affiliation(s)
- Adina I Ciuciu
- Istituto per la Sintesi Organica e Fotoreattivita' (ISOF), CNR, Via P. Gobetti 101, 40129 Bologna, Italy.
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9
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Pillai ZS, Ceroni P, Kubeil M, Heldt JM, Stephan H, Bergamini G. Dendrimers as Nd3+ ligands: effect of generation on the efficiency of the sensitized lanthanide emission. Chem Asian J 2013; 8:771-7. [PMID: 23345036 DOI: 10.1002/asia.201201065] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 12/18/2012] [Indexed: 11/08/2022]
Abstract
We have designed two novel dendrimers with cyclam cores with appended poly(amido amine) (PAMAM) dendrons, decorated at the periphery with four and eight dansyl chromophores, respectively. The photophysical properties of the dendrimers and their Nd(3+) complexes have been investigated. The energy-transfer efficiency to the lanthanide ions from these dendrimers has been studied as a function of the generation. It has been observed that an increase in the dendrimer generation as well as the number of amide units enhances the energy transfer to the lanthanide ion.
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Affiliation(s)
- Zeena S Pillai
- Department of Chemistry, School of Arts and Sciences, Amrita VishwaVidyapeetham, Amritapuri, Clappana P.O., Kollam-690525, Kerala, India
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10
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Chow CF. Two-photon induced emissive thiophene donor–acceptor systems as molecular probes for in vitro bio-imaging: synthesis, crystal structure, and spectroscopic properties. RSC Adv 2013. [DOI: 10.1039/c3ra42914h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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11
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Ahn HY, Fairfull-Smith K, Morrow BJ, Lussini V, Kim B, Bondar MV, Bottle S, Belfield KD. Two-photon fluorescence microscopy imaging of cellular oxidative stress using profluorescent nitroxides. J Am Chem Soc 2012; 134:4721-30. [PMID: 22380794 PMCID: PMC3303203 DOI: 10.1021/ja210315x] [Citation(s) in RCA: 110] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Indexed: 12/14/2022]
Abstract
A range of varying chromophore nitroxide free radicals and their nonradical methoxyamine analogues were synthesized and their linear photophysical properties examined. The presence of the proximate free radical masks the chromophore's usual fluorescence emission, and these species are described as profluorescent. Two nitroxides incorporating anthracene and fluorescein chromophores (compounds 7 and 19, respectively) exhibited two-photon absorption (2PA) cross sections of approximately 400 G.M. when excited at wavelengths greater than 800 nm. Both of these profluorescent nitroxides demonstrated low cytotoxicity toward Chinese hamster ovary (CHO) cells. Imaging colocalization experiments with the commercially available CellROX Deep Red oxidative stress monitor demonstrated good cellular uptake of the nitroxide probes. Sensitivity of the nitroxide probes to H(2)O(2)-induced damage was also demonstrated by both one- and two-photon fluorescence microscopy. These profluorescent nitroxide probes are potentially powerful tools for imaging oxidative stress in biological systems, and they essentially "light up" in the presence of certain species generated from oxidative stress. The high ratio of the fluorescence quantum yield between the profluorescent nitroxide species and their nonradical adducts provides the sensitivity required for measuring a range of cellular redox environments. Furthermore, their reasonable 2PA cross sections provide for the option of using two-photon fluorescence microscopy, which circumvents commonly encountered disadvantages associated with one-photon imaging such as photobleaching and poor tissue penetration.
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Affiliation(s)
- Hyo-Yang Ahn
- Department
of Chemistry, and CREOL, The College of Optics and Photonics, University of Central Florida, P.O. Box 162366, Orlando,
Florida 32816-2366, United States
| | - Kathryn
E. Fairfull-Smith
- ARC Centre of Excellence for Free
Radical Chemistry and Biotechnology, Faculty of Science and Technology, Queensland University of Technology, GPO Box 2434,
Brisbane, QLD, 4001, Australia
| | - Benjamin J. Morrow
- ARC Centre of Excellence for Free
Radical Chemistry and Biotechnology, Faculty of Science and Technology, Queensland University of Technology, GPO Box 2434,
Brisbane, QLD, 4001, Australia
| | - Vanessa Lussini
- ARC Centre of Excellence for Free
Radical Chemistry and Biotechnology, Faculty of Science and Technology, Queensland University of Technology, GPO Box 2434,
Brisbane, QLD, 4001, Australia
| | - Bosung Kim
- Department
of Chemistry, and CREOL, The College of Optics and Photonics, University of Central Florida, P.O. Box 162366, Orlando,
Florida 32816-2366, United States
| | - Mykhailo V. Bondar
- Institute of Physics, National Academy of Sciences, Prospect Nauki 46, Kiev
03028, Ukraine
| | - Steven
E. Bottle
- ARC Centre of Excellence for Free
Radical Chemistry and Biotechnology, Faculty of Science and Technology, Queensland University of Technology, GPO Box 2434,
Brisbane, QLD, 4001, Australia
| | - Kevin D. Belfield
- Department
of Chemistry, and CREOL, The College of Optics and Photonics, University of Central Florida, P.O. Box 162366, Orlando,
Florida 32816-2366, United States
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Kudo K, Momotake A, Tanaka JK, Miwa Y, Arai T. Environmental polarity estimation in living cells by use of quinoxaline-based full-colored solvatochromic fluorophore PQX and its derivatives. Photochem Photobiol Sci 2012; 11:674-8. [DOI: 10.1039/c2pp05337c] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Michinobu T, Seo C, Noguchi K, Mori T. Effects of click postfunctionalization on thermal stability and field effect transistor performances of aromatic polyamines. Polym Chem 2012. [DOI: 10.1039/c2py20079a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bhatt P, Govender T, Kruger HG, Maguire GEM. N-Benzyl-5-(dimethyl-amino)-naphthalene-1-sulfonamide. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o2458-9. [PMID: 22065719 PMCID: PMC3200799 DOI: 10.1107/s1600536811033083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Accepted: 08/15/2011] [Indexed: 05/31/2023]
Abstract
The structure of the title compound, C(19)H(20)N(2)O(2)S, displays inter-molecular N-H⋯O hydrogen bonding, which generates inversion dimers. There is no π-π stacking in the crystal structure. The dihedral angle between the phenyl ring and naphthalene ring system is 59.16 (11)°.
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Affiliation(s)
- Pralav Bhatt
- School of Chemistry, University of KwaZulu-Natal, Durban 4000, South Africa
| | - Thavendran Govender
- School of Pharmacy and Pharmacology, University of KwaZulu-Natal, Durban 4000, South Africa
| | - Hendrik G. Kruger
- School of Chemistry, University of KwaZulu-Natal, Durban 4000, South Africa
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Chao HY, Su BC, Li CL, Lam CK, Feng XL. Mono-, di-, and tri-nuclear gold(I) complexes with dansyl moiety: Synthesis, characterization, and photophysical properties. INORG CHEM COMMUN 2011. [DOI: 10.1016/j.inoche.2011.05.041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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Wu W, Kong HK, Li H, Ho YM, Gao Y, Hao J, Murphy MB, Lam MHW, Wong KL, Lee CS. Comparative Studies of Multi-Photon Induced Emission by Pyridine-Based Small Molecular Probes in Biological Media: Selective Binding of Bioactive Molecules and In Vitro Imaging. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100570] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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17
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Guo D, Chen T, Ye D, Xu J, Jiang H, Chen K, Wang H, Liu H. Cell-permeable iminocoumarine-based fluorescent dyes for mitochondria. Org Lett 2011; 13:2884-7. [PMID: 21548645 DOI: 10.1021/ol200908r] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A class of small molecule fluorophores, 2-iminocoumarin-3-carboxamide derivatives, has been developed by a rapid microwave-assisted process. These fluorescent probes are cell membrane permeable with low cytotoxicity and able to selectively stain organelles in living cells.
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Affiliation(s)
- Diliang Guo
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P R China
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18
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Li L, Chow WC, Wong WY, Chui CH, Wong RSM. Synthesis, characterization and photovoltaic behavior of platinum acetylide polymers with electron-deficient 9,10-anthraquinone moiety. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.08.044] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Sumalekshmy S, Fahrni CJ. Metal Ion-Responsive Fluorescent Probes for Two-Photon Excitation Microscopy. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2011; 23:483-500. [PMID: 28503029 PMCID: PMC5427716 DOI: 10.1021/cm1021905] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Metal ion-responsive fluorescent probes are powerful tools for visualizing labile metal ion pools in live cells. To take full advantage of the benefits offered by two-photon excitation microscopy, including increased depth penetration, reduced phototoxicity, and intrinsic 3D capabilities, the photophysical properties of the probes must be optimized for nonlinear excitation. This review summarizes the challenges associated with the design of two-photon excitable fluorescent probes and labels and offers an overview on recent efforts in developing selective and sensitive reagents for the detection of metal ions in biological systems.
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20
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Hau DKP, Zhu GY, Leung AKM, Wong RSM, Cheng GYM, Lai PBS, Tong SW, Lau FY, Chan KW, Wong WY, Lam KH, Cheng CH, Cheung F, Chui CH, Gambari R, Fong DWF. In vivo anti-tumour activity of corilagin on Hep3B hepatocellular carcinoma. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2010; 18:11-15. [PMID: 21036022 DOI: 10.1016/j.phymed.2010.09.001] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2010] [Revised: 07/19/2010] [Accepted: 09/04/2010] [Indexed: 05/30/2023]
Abstract
We have investigated the potential in vivo anti-tumour activity of corilagin using the Hep3B hepatocellular carcinoma cell line and an athymic nude mice xenograft model. The purity of corilagin was confirmed by high performance liquid chromatographic analysis. Corilagin was administrated intraperitoneally for a continuous period of 7 days at a concentration of 15 mg/kg of body weight per day. A significant inhibition of tumour growth was observed when treated mice are compared with control groups. Furthermore, analysis of enzymes markers of liver function, including alanine aminotransferase and asparate aminotransferase, suggested that current therapeutic dosage of corilagin did not exert adverse effect on liver. Our observations support the view that corilagin is considerably effective to retard the in vivo growth of xenografted Hep3B hepatocellular carcinoma.
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Affiliation(s)
- Desmond Kwok-Po Hau
- Research and Development Division, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
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