251
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Huang W, Lin W, Guan X. Development of ratiometric fluorescent pH sensors based on chromenoquinoline derivatives with tunable pKa values for bioimaging. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.10.130] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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252
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Wadhavane PD, Izquierdo MÁ, Lutters D, Burguete MI, Marín MJ, Russell DA, Galindo F, Luis SV. Fluorescent macrocyclic probes with pendant functional groups as markers of acidic organelles within live cells. Org Biomol Chem 2014; 12:823-31. [DOI: 10.1039/c3ob41773e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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253
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Nakata E, Yukimachi Y, Nazumi Y, Uwate M, Maseda H, Uto Y, Hashimoto T, Okamoto Y, Hori H, Morii T. A novel strategy to design latent ratiometric fluorescent pH probes based on self-assembled SNARF derivatives. RSC Adv 2014. [DOI: 10.1039/c3ra43928c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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254
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Miao JT, Fan C, Sun R, Xu YJ, Ge JF. Optical properties of hemicyanines with terminal amino groups and their applications in near-infrared fluorescent imaging of nucleoli. J Mater Chem B 2014; 2:7065-7072. [DOI: 10.1039/c4tb01218f] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A cellular dye with properties of long-wave emission, large Stokes shift, water solubility, low cytotoxicity, and good photostability is reported.
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Affiliation(s)
- Jia-Tao Miao
- College of Chemistry
- Chemical Engineering and Material Science
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou 215123, People's Republic of China
| | - Chen Fan
- School of Radiation Medicine and Protection
- Soochow University
- Suzhou 215123, People's Republic of China
| | - Ru Sun
- College of Chemistry
- Chemical Engineering and Material Science
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou 215123, People's Republic of China
| | - Yu-Jie Xu
- School of Radiation Medicine and Protection
- Soochow University
- Suzhou 215123, People's Republic of China
| | - Jian-Feng Ge
- College of Chemistry
- Chemical Engineering and Material Science
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou 215123, People's Republic of China
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255
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Ru Q, Xue Z, Wang Y, Liu Y, Li H. Luminescent Materials of Europium(III) Coordinated by a Terpyridine-Functionalized Poly(Ionic Liquid). Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201301168] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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256
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Yan L, Chang YN, Yin W, Liu X, Xiao D, Xing G, Zhao L, Gu Z, Zhao Y. Biocompatible and flexible graphene oxide/upconversion nanoparticle hybrid film for optical pH sensing. Phys Chem Chem Phys 2013; 16:1576-82. [PMID: 24309538 DOI: 10.1039/c3cp54317j] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Free-standing optical hybrid film which is composed of positively-charged polyethylenimine-coated NaYF4:Yb,Er nanoparticles and negatively-charged graphene oxide (GO) has been developed to measure pH based on the pH-dependent luminescence quenching effect caused by GO. The isothermal titration calorimetry analyses indicate that the interaction between GO and NaYF4:Yb,Er nanoparticles becomes stronger with increasing pH, leading to a more significant fluorescence quenching of NaYF4:Yb,Er nanoparticles at high pH values. The excellent mechanical properties of the hybrid film endow the thin-film pH sensor with better repeatability and higher stability during the measurements. Quantitatively, the upconversion luminescence intensity of the hybrid film exhibits a linear trend over the pH range of 5.00-8.00. Because of excitation with a 980 nm laser, as expected, the hybrid film sensor is also sensitive to the urine measurements with reduced background absorption. In addition to its good biocompatibility, our free-standing hybrid film sensor would be a promising candidate for biological, medical, and pharmaceutical applications.
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Affiliation(s)
- Liang Yan
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
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257
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Zhou Q, Zhang B, Su L, Jiang T, Chen R, Du T, Ye Y, Shen J, Dai G, Han D, Jiang H. Palladium-catalyzed highly regioselective 2-arylation of 2,x-dibromopyridines and its application in the efficient synthesis of a 17β-HSD1 inhibitor. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.10.065] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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258
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Fluorescent imaging of acidic compartments in living cells with a high selective novel one-photon ratiometric and two-photon acidic pH probe. Biosens Bioelectron 2013; 50:42-9. [DOI: 10.1016/j.bios.2013.05.060] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 05/30/2013] [Accepted: 05/31/2013] [Indexed: 11/17/2022]
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259
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A ratiometric fluorescent probe for sensitive, selective and reversible detection of copper (II) based on riboflavin-stabilized gold nanoclusters. Talanta 2013; 117:399-404. [DOI: 10.1016/j.talanta.2013.09.034] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 09/15/2013] [Accepted: 09/19/2013] [Indexed: 11/20/2022]
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260
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A new near-infrared neutral pH fluorescent probe for monitoring minor pH changes and its application in imaging of HepG2 cells. Appl Biochem Biotechnol 2013; 172:1036-44. [PMID: 24142355 DOI: 10.1007/s12010-013-0573-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 09/30/2013] [Indexed: 10/26/2022]
Abstract
A new near-neutral pH near-infrared (NIR) fluorescent probe utilizing a fluorophore-receptor molecular framework that can modulate the fluorescence emission intensity through a fast photoinduced electron transfer process was developed. Our strategy was to choose tricarbocyanine (Cy), a NIR fluorescent dye with high extinction coefficients, as a fluorophore, and N-methylpiperazine (MP) as a receptor. The pH titration indicated that MP-Cy can monitor the minor physiological pH fluctuations with a pKa of ∼7.10 near physiological pH, which is valuable for intracellular pH researches. The probe responds linearly and rapidly to minor pH fluctuations within the range of 3.05-7.10 and exhibits strong dependence on pH changes. As expected, the real-time imaging of cellular pH and the detection of pH in situ was achieved successfully in living HepG2 cells by this probe. It is shown that the probe effectively avoids the influence of autofluorescence and native cellular species in biological systems and meanwhile exhibits high sensitivity, good photostability, and excellent cell membrane permeability.
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261
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Yang YL, Wang YW, Duan DZ, Zhang AJ, Fang JG, Peng Y. Off-on-off fluorescent chemosensor for pH measurement with a terbium(iii) complex based on a tripodal salicylic-acid derivative. Org Biomol Chem 2013; 11:6960-6. [PMID: 24056968 DOI: 10.1039/c3ob41319e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New Tb(iii) and Eu(iii) complexes have been synthesized as potential pH probes using a tripodal substituted-salicylic ligand (H3). Among them, this carboxylate ligand is found to be a good sensitizer for Tb(iii) emission owing to the superior match of the triplet energy level of the ligand with the (5)D4 emitting level of Tb(iii). The resulting · complex exhibited high sensitivity in the physiological pH range with significant "off-on-off" fluorescence changes in aqueous solution. Furthermore, this unique rare-earth complex has been successfully used to monitor pH variations within HeLa cells and with filter papers.
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Affiliation(s)
- Yan-Ling Yang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China.
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262
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Li X, Gao X, Shi W, Ma H. Design strategies for water-soluble small molecular chromogenic and fluorogenic probes. Chem Rev 2013; 114:590-659. [PMID: 24024656 DOI: 10.1021/cr300508p] [Citation(s) in RCA: 1195] [Impact Index Per Article: 108.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xiaohua Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
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263
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Chung CYS, Yam VWW. Dual pH- and Temperature-Responsive Metallosupramolecular Block Copolymers with Tunable Critical Micelle Temperature by Modulation of the Self-Assembly of NIR-Emissive Alkynylplatinum(II) Complexes Induced by Changes in Hydrophilicity and Electrostatic Ef. Chemistry 2013; 19:13182-92. [DOI: 10.1002/chem.201301547] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Indexed: 12/18/2022]
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264
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Mijatović AM, Jelić RM, Bogojeski J, Bugarčić ŽD, Petrović B. Kinetics, mechanism, and equilibrium studies of the reactions between a ruthenium(II) complex and some nitrogen- and sulfur-donor nucleophiles. MONATSHEFTE FUR CHEMIE 2013. [DOI: 10.1007/s00706-013-1044-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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265
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Liu W, Sun R, Ge JF, Xu YJ, Xu Y, Lu JM, Itoh I, Ihara M. Reversible Near-Infrared pH Probes Based on Benzo[a]phenoxazine. Anal Chem 2013; 85:7419-25. [DOI: 10.1021/ac4013539] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | | | | | - Isaum Itoh
- Drug Discovery Science
Research
Centre, Hoshi University, 2-4-41 Ebara,
Shinagawa-ku, Tokyo 142-8501, Japan
| | - Masataka Ihara
- Drug Discovery Science
Research
Centre, Hoshi University, 2-4-41 Ebara,
Shinagawa-ku, Tokyo 142-8501, Japan
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266
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267
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Liu X, Xu J, Lv Y, Wu W, Liu W, Tang Y. An ATP-selective, lanthanide complex luminescent probe. Dalton Trans 2013; 42:9840-6. [PMID: 23689488 DOI: 10.1039/c3dt50986a] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A luminescent probe based on a europium complex is developed, which effectively distinguishes adenosine-5'-triphosphate (ATP) from adenosine diphosphate (ADP) and adenosine monophosphate (AMP) in pure water at pH 6.8. With a longer lifetime (in ms range), the probe is prospectively applied to biological systems to monitor ATP levels by completely removing the background fluorescence of other molecules.
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Affiliation(s)
- Xiao Liu
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
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268
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Lee MH, Han JH, Lee JH, Park N, Kumar R, Kang C, Kim JS. Two-Color Probe to Monitor a Wide Range of pH Values in Cells. Angew Chem Int Ed Engl 2013; 52:6206-9. [DOI: 10.1002/anie.201301894] [Citation(s) in RCA: 211] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 03/22/2013] [Indexed: 11/08/2022]
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269
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Lee MH, Han JH, Lee JH, Park N, Kumar R, Kang C, Kim JS. Two-Color Probe to Monitor a Wide Range of pH Values in Cells. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301894] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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270
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Xiong X, Song F, Chen G, Sun W, Wang J, Gao P, Zhang Y, Qiao B, Li W, Sun S, Fan J, Peng X. Construction of long-wavelength fluorescein analogues and their application as fluorescent probes. Chemistry 2013; 19:6538-45. [PMID: 23589345 DOI: 10.1002/chem.201300418] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2013] [Indexed: 12/22/2022]
Abstract
Born to dye: Five fluorescein analogues were synthesised (see scheme). One analogue was found to emit in the NIR region with a high quantum yield, excellent photostability and good permeability. Three derivatives were found to specifically stain mitochondria and one dye responds to thiols with a strong turn-on NIR fluorescence signal and colorimetric change, in vitro and in vivo.
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Affiliation(s)
- Xiaoqing Xiong
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116025, PR China
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271
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Xing X, Zhou Y, Sun J, Tang D, Li T, Wu K. Determination of Paraquat by Cucurbit[7]uril Sensitized Fluorescence Quenching Method. ANAL LETT 2013. [DOI: 10.1080/00032719.2012.729240] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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272
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Yu L, Li T, Wang Q, Li L, Chen L. Near-infrared aminocyanine dyes: synthesis, optical properties, and application to the preparation of fluorescent microspheres. RESEARCH ON CHEMICAL INTERMEDIATES 2013. [DOI: 10.1007/s11164-013-1052-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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273
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Park JW, Kim DJ, Lee KJ, Kim Y. Reactive Cyanine Fluorescence Dyes Indicating pH Perturbation of Biomolecules. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.1.287] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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274
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Fan L, Liu Q, Lu D, Shi H, Yang Y, Li Y, Dong C, Shuang S. A novel far-visible and near-infrared pH probe for monitoring near-neutral physiological pH changes: imaging in live cells. J Mater Chem B 2013; 1:4281-4288. [DOI: 10.1039/c3tb20547a] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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275
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Yuan L, Lin W, Zheng K, He L, Huang W. Far-red to near infrared analyte-responsive fluorescent probes based on organic fluorophore platforms for fluorescence imaging. Chem Soc Rev 2013; 42:622-61. [DOI: 10.1039/c2cs35313j] [Citation(s) in RCA: 1456] [Impact Index Per Article: 132.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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276
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Men G, Zhang G, Liang C, Liu H, Yang B, Pan Y, Wang Z, Jiang S. A dual channel optical detector for trace water chemodosimetry and imaging of live cells. Analyst 2013; 138:2847-57. [DOI: 10.1039/c3an36887d] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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277
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Zeng L, Fan N, Zha J, Hu X, Fu B, Qin C, Wang L. A novel and photostable pH probe for selectively staining nuclei in living cells. Analyst 2013; 138:7083-6. [DOI: 10.1039/c3an01655b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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278
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Liu XD, Xu Y, Sun R, Xu YJ, Lu JM, Ge JF. A coumarin–indole-based near-infrared ratiometric pH probe for intracellular fluorescence imaging. Analyst 2013; 138:6542-50. [DOI: 10.1039/c3an01033c] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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279
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Yang Z, Qin W, Lam JWY, Chen S, Sung HHY, Williams ID, Tang BZ. Fluorescent pH sensor constructed from a heteroatom-containing luminogen with tunable AIE and ICT characteristics. Chem Sci 2013. [DOI: 10.1039/c3sc50648g] [Citation(s) in RCA: 180] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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280
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Aigner D, Borisov SM, Petritsch P, Klimant I. Novel near infra-red fluorescent pH sensors based on 1-aminoperylene bisimides covalently grafted onto poly(acryloylmorpholine). Chem Commun (Camb) 2013; 49:2139-41. [DOI: 10.1039/c3cc39151e] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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281
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Wang X, Cui L, Zhou N, Zhu W, Wang R, Qian X, Xu Y. A highly selective and sensitive near-infrared fluorescence probe for arylamine N-acetyltransferase 2 in vitro and in vivo. Chem Sci 2013. [DOI: 10.1039/c3sc51079d] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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282
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Development of a ratiometric time-resolved luminescence sensor for pH based on lanthanide complexes. Anal Chim Acta 2013; 761:149-56. [DOI: 10.1016/j.aca.2012.11.025] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2012] [Revised: 10/19/2012] [Accepted: 11/16/2012] [Indexed: 01/22/2023]
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283
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Chung CYS, Li SPY, Louie MW, Lo KKW, Yam VWW. Induced self-assembly and disassembly of water-soluble alkynylplatinum(ii) terpyridyl complexes with “switchable” near-infrared (NIR) emission modulated by metal–metal interactions over physiological pH: demonstration of pH-responsive NIR luminescent probes in cell-imaging studies. Chem Sci 2013. [DOI: 10.1039/c3sc50196e] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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284
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You QH, Fan L, Chan WH, Lee AWM, Shuang S. Ratiometric spiropyran-based fluorescent pH probe. RSC Adv 2013. [DOI: 10.1039/c3ra41456f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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285
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Xu H, Liu Z, Sheng L, Chen M, Huang D, Zhang H, Song C, Chen S. A novel “turn-on” fluorescent probe for Fe3+in aqueous media based on CN isomerization. NEW J CHEM 2013. [DOI: 10.1039/c2nj40767a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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286
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Zhu D, Li G, Xue L, Jiang H. Development of ratiometric near-infrared fluorescent probes using analyte-specific cleavage of carbamate. Org Biomol Chem 2013; 11:4577-80. [DOI: 10.1039/c3ob40932e] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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287
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He Z, Dobrovolsky D, Trinchera P, Yudin AK. Synthesis of Multisubstituted Pyridines. Org Lett 2012; 15:334-7. [PMID: 23273041 DOI: 10.1021/ol303246b] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhi He
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Dennis Dobrovolsky
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Piera Trinchera
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Andrei K. Yudin
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
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288
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Xu Z, Ren AM, Guo JF, Liu XT, Huang S, Feng JK. A Theoretical Investigation of Two Typical Two-Photon pH Fluorescent Probes. Photochem Photobiol 2012; 89:300-9. [DOI: 10.1111/php.12015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Accepted: 10/24/2012] [Indexed: 12/11/2022]
Affiliation(s)
- Zhong Xu
- State Key Laboratory of Theoretical and Computational Chemistry; Institute of Theoretical Chemistry; Jilin University; Changchun; China
| | - Ai-Min Ren
- State Key Laboratory of Theoretical and Computational Chemistry; Institute of Theoretical Chemistry; Jilin University; Changchun; China
| | - Jing-Fu Guo
- School of Physics; Northeast Normal University; Changchun; China
| | - Xiao-Ting Liu
- State Key Laboratory of Theoretical and Computational Chemistry; Institute of Theoretical Chemistry; Jilin University; Changchun; China
| | - Shuang Huang
- State Key Laboratory of Theoretical and Computational Chemistry; Institute of Theoretical Chemistry; Jilin University; Changchun; China
| | - Ji-Kang Feng
- State Key Laboratory of Theoretical and Computational Chemistry; Institute of Theoretical Chemistry; Jilin University; Changchun; China
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289
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Jiang Z, Wang B, Che H, Liu B. Structural Characterization and Bacteriostatic and Cytotoxicity to 3T3 Cells Study of Oligobiguanidine (Polyhexamethylene Biguanidine Hydrochloride) and its 3-Glycidoxypropyltrimethoxysilane Derivatives. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2012. [DOI: 10.1080/10601325.2012.722856] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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290
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Nekongo EE, Bagchi P, Fahrni CJ, Popik VV. 9-Aryl-9-xanthenols: a convenient platform for the design of fluorimetric and colorimetric pH indicators. Org Biomol Chem 2012; 10:9214-8. [PMID: 23104455 DOI: 10.1039/c2ob26715b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
In aqueous and alcohol solutions, colorless and non-fluorescent derivatives of 9-aryl-9H-xanthen-9-ol equilibrate with brightly colored and fluorescent 9-arylxanthylium cations, thus offering a convenient platform for the design of dual-mode indicators for emission and absorption-based pH measurements. The position of the prototropic equilibrium depends only on the hydronium ion concentration and is not affected by general acids or other ions. Furthermore, the equilibrium equivalence point can be readily adjusted by introducing substituents in the xanthenol core. As dehydroxylation of 3,6-dialkoxy-9-(o-tolyl)-9-xanthenol occurs at pH = 6.5, indicators of this type are well suited for biological applications as illustrated by in vitro cell culture studies with NIH 3T3 cells.
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Affiliation(s)
- Emmanuel E Nekongo
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, USA
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291
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Li H, Guo J, Zhang X, Chen Z. A Novel Colorimetric and Fluorescent pH Sensor Derived from Iminocoumarin and Thiophene-Carboxaldehyde. HETEROATOM CHEMISTRY 2012. [DOI: 10.1002/hc.21049] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hongqi Li
- Key Laboratory of Science & Technology of Eco-Textile; Ministry of Education; College of Chemistry; Chemical Engineering and Biotechnology; Donghua University; Shanghai; 201620; People's Republic of China
| | - Jian Guo
- Key Laboratory of Science & Technology of Eco-Textile; Ministry of Education; College of Chemistry; Chemical Engineering and Biotechnology; Donghua University; Shanghai; 201620; People's Republic of China
| | - Xuebin Zhang
- Key Laboratory of Science & Technology of Eco-Textile; Ministry of Education; College of Chemistry; Chemical Engineering and Biotechnology; Donghua University; Shanghai; 201620; People's Republic of China
| | - Zhen Chen
- Key Laboratory of Science & Technology of Eco-Textile; Ministry of Education; College of Chemistry; Chemical Engineering and Biotechnology; Donghua University; Shanghai; 201620; People's Republic of China
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292
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Wang S, Li N, Pan W, Tang B. Advances in functional fluorescent and luminescent probes for imaging intracellular small-molecule reactive species. Trends Analyt Chem 2012. [DOI: 10.1016/j.trac.2012.07.010] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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293
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Li P, Xiao H, Tang B. A Near-infrared Fluorescent Probe for Selective Simultaneous Detection of Fe2+and Cl−in Living Cells. CHINESE J CHEM 2012. [DOI: 10.1002/cjoc.201200652] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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294
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Increased expression of OCT4 is associated with low differentiation and tumor recurrence in human hepatocellular carcinoma. Pathol Res Pract 2012; 208:527-33. [PMID: 22824146 DOI: 10.1016/j.prp.2012.05.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2011] [Revised: 04/17/2012] [Accepted: 05/01/2012] [Indexed: 12/12/2022]
Abstract
Octamer binding transcription factor 4 (OCT4), a key transcription factor required to maintain self-renewal and pluripotency of human and mouse embryonic stem cells, has been recently identified to be associated with tumorigenesis and malignant transformation of many types of cancers. This study was to determine the roles of OCT4 in HCC recurrence and their impact on the clinical outcome of HCC patients. Western blot and immunohistochemical stains were used to detect the expression of OCT4 protein in 152 HCC tissues and 40 cirrhosis tissues, as well as in 6 human HCC cell lines and normal hepatocytes. OCT4 expression in HCC cell lines and tumor tissues was higher than in normal hepatocytes and cirrhosis tissues. Overexpression of OCT4 was significantly associated with low differentiation and tumor recurrence. Patients with elevated expression of OCT4 protein usually carried a poor overall survival and high recurrence rate. Multivariate analysis showed that OCT4 expression was an independent predictive factor for HCC patients survival. OCT4 might serve as a promising biomarker for the diagnosis of highly recurrent cases of HCC and could be used as a valuable indicator for predicting the prognosis of HCC.
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295
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Jokic T, Borisov SM, Saf R, Nielsen DA, Kühl M, Klimant I. Highly photostable near-infrared fluorescent pH indicators and sensors based on BF2-chelated tetraarylazadipyrromethene dyes. Anal Chem 2012; 84:6723-30. [PMID: 22738322 PMCID: PMC3413250 DOI: 10.1021/ac3011796] [Citation(s) in RCA: 125] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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In this study, a series of new BF2-chelated
tetraarylazadipyrromethane
dyes are synthesized and are shown to be suitable for the preparation
of on/off photoinduced electron transfer modulated fluorescent sensors.
The new indicators are noncovalently entrapped in polyurethane hydrogel
D4 and feature absorption maxima in the range 660–710 nm and
fluorescence emission maxima at 680–740 nm. Indicators have
high molar absorption coefficients of ∼80 000 M–1 cm–1, good quantum yields (up to
20%), excellent photostability and low cross-sensitivity to the ionic
strength. pKa values of indicators are
determined from absorbance and fluorescence measurements and range
from 7 to 11, depending on the substitution pattern of electron-donating
and -withdrawing functionalities. Therefore, the new indicators are
suitable for exploitation and adaptation in a diverse range of analytical
applications. Apparent pKa values in sensor
films derived from fluorescence data show 0.5–1 pH units lower
values in comparison with those derived from the absorption data due
to Förster resonance energy transfer from protonated to deprotonated
form. A dual-lifetime referenced sensor is prepared, and application
for monitoring of pH in corals is demonstrated.
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Affiliation(s)
- Tijana Jokic
- Institute of Analytical Chemistry and Food Chemistry, Graz University of Technology, Stremayrgasse 9, 8010, Graz, Austria
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296
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Sun X, Wang YW, Peng Y. A Selective and Ratiometric Bifunctional Fluorescent Probe for Al3+ Ion and Proton. Org Lett 2012; 14:3420-3. [DOI: 10.1021/ol301390g] [Citation(s) in RCA: 205] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Xin Sun
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Ya-Wen Wang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Yu Peng
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
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297
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Xu J, Wang R, Li Y, Gao Z, Yao R, Wang S, Wu B. Chiral Supramolecular Frameworks Based on Chiral Metallocycles: Crystal Structures and Photophysical Properties. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200100] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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298
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A Tunable Ratiometric pH Sensor Based on Carbon Nanodots for the Quantitative Measurement of the Intracellular pH of Whole Cells. Angew Chem Int Ed Engl 2012; 51:6432-5. [DOI: 10.1002/anie.201202533] [Citation(s) in RCA: 382] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2012] [Indexed: 11/07/2022]
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299
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Shi W, Li X, Ma H. A Tunable Ratiometric pH Sensor Based on Carbon Nanodots for the Quantitative Measurement of the Intracellular pH of Whole Cells. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201202533] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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300
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Zhang X, Bloch S, Akers W, Achilefu S. Near-infrared molecular probes for in vivo imaging. CURRENT PROTOCOLS IN CYTOMETRY 2012; Chapter 12:Unit12.27. [PMID: 22470154 PMCID: PMC3334312 DOI: 10.1002/0471142956.cy1227s60] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Cellular and tissue imaging in the near-infrared (NIR) wavelengths between 700 and 900 nm is advantageous for in vivo imaging because of the low absorption of biological molecules in this region. This unit presents protocols for small animal imaging using planar and fluorescence lifetime imaging techniques. Included is an overview of NIR fluorescence imaging of cells and small animals using NIR organic fluorophores, nanoparticles, and multimodal imaging probes. The development, advantages, and application of NIR fluorescent probes that have been used for in vivo imaging are also summarized. The use of NIR agents in conjunction with visible dyes and considerations in selecting imaging agents are discussed. We conclude with practical considerations for the use of these dyes in cell and small animal imaging applications.
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Affiliation(s)
- Xuan Zhang
- Department of Radiology, Washington University School of Medicine, St. Louis, Missouri
| | - Sharon Bloch
- Department of Radiology, Washington University School of Medicine, St. Louis, Missouri
| | - Walter Akers
- Department of Radiology, Washington University School of Medicine, St. Louis, Missouri
| | - Samuel Achilefu
- Department of Radiology, Washington University School of Medicine, St. Louis, Missouri
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