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Kromer C, Katz A, Feldmann I, Laux P, Luch A, Tschiche HR. A targeted fluorescent nanosensor for ratiometric pH sensing at the cell surface. Sci Rep 2024; 14:12302. [PMID: 38811698 PMCID: PMC11137054 DOI: 10.1038/s41598-024-62976-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Accepted: 05/23/2024] [Indexed: 05/31/2024] Open
Abstract
The correlation between altered extracellular pH and various pathological conditions, including cancer, inflammation and metabolic disorders, is well known. Bulk pH measurements cannot report the extracellular pH value at the cell surface. However, there is a limited number of suitable tools for measuring the extracellular pH of cells with high spatial resolution, and none of them are commonly used in laboratories around the world. In this study, a versatile ratiometric nanosensor for the measurement of extracellular pH was developed. The nanosensor consists of biocompatible polystyrene nanoparticles loaded with the pH-inert reference dye Nile red and is surface functionalized with a pH-responsive fluorescein dye. Equipped with a targeting moiety, the nanosensor can adhere to cell membranes, allowing direct measurement of extracellular pH at the cell surface. The nanosensor exhibits a sensitive ratiometric pH response within the range of 5.5-9.0, with a calculated pKa of 7.47. This range optimally covers the extracellular pH (pHe) of most healthy cells and cells in which the pHe is abnormal, such as cancer cells. In combination with the nanosensors ability to target cell membranes, its high robustness, reversibility and its biocompatibility, the pHe nanosensor proves to be well suited for in-situ measurement of extracellular pH, even over extended time periods. This pH nanosensor has the potential to advance biomedical research by improving our understanding of cellular microenvironments, where extracellular pH plays an important role.
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Affiliation(s)
- Charlotte Kromer
- Product Materials and Nanotechnology, Department Chemical and Product Safety, German Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, 10589, Berlin, Germany.
- Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany.
| | - Aaron Katz
- Product Materials and Nanotechnology, Department Chemical and Product Safety, German Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, 10589, Berlin, Germany
| | - Ines Feldmann
- Material-Microbiome Interactions, Department Materials and the Environment, Federal Institute for Materials Research and Testing, Berlin, Germany
| | - Peter Laux
- Product Materials and Nanotechnology, Department Chemical and Product Safety, German Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, 10589, Berlin, Germany
| | - Andreas Luch
- Product Materials and Nanotechnology, Department Chemical and Product Safety, German Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, 10589, Berlin, Germany
- Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany
| | - Harald R Tschiche
- Product Materials and Nanotechnology, Department Chemical and Product Safety, German Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, 10589, Berlin, Germany
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2
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Arnau Del Valle C, Thomas P, Galindo F, Muñoz MP, Marín MJ. Gold nanoparticle-based two-photon fluorescent nanoprobe for monitoring intracellular nitric oxide levels. J Mater Chem B 2023; 11:3387-3396. [PMID: 36919860 DOI: 10.1039/d3tb00103b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
Nitric oxide (NO) plays an important role in the regulation of the immune, cardiovascular and nervous systems. Consequently, being able to monitor and quantify intracellular NO levels would provide a greater understanding of the implications of this molecule in the different biological processes, including, for example, in cancer. Here, we report a broadly applicable two-photon excitable fluorescent nanoprobe able to detect and potentially quantify NO levels in an extensive range of cellular environments. The nanoprobe consists of a thiolated photoinduced electron transfer-based two=photon fluorescent probe attached onto the surface of 2.4 ± 0.7 nm gold nanoparticles (DANPY-NO@AuNPs). The nanoprobe, which can be synthesised in a reproducible manner and exhibits great stability when stored at room temperature, is able to selectively detect NO in solution, with a dynamic range up to 150 μM, and at pH values of biological relevance. DANPY-NO@AuNPs were able to selectively detect endogenous NO in RAW264.7γ NO- macrophages and THP-1 human leukemic cells; and endogenous and exogenous NO in endothelial cells. The nanoprobe accumulated in the acidic organelles of the tested cell lines showing negligible toxicity. Importantly, DANPY-NO@AuNPs showed potential to quantify intracellular NO concentrations in MDA-MB-231 breast cancer cells. The biological evaluation of the nanoprobe was undertaken using confocal laser scanning (images and intracellular emission spectra) and multiphoton microscopies, and flow cytometry. Based on their excellent sensitivity and stability, and outstanding versatility, DANPY-NO@AuNPs can be applied for the spatiotemporal monitoring of in vitro and in vivo NO levels.
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Affiliation(s)
- Carla Arnau Del Valle
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK.
| | - Paul Thomas
- Henry Wellcome Laboratory for Cell Imaging, Faculty of Science, University of East Anglia, Norwich Research Park, Norwich, NR4 7T, UK
| | - Francisco Galindo
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, Av. Sos Baynat s/n, Castellón de la Plana, 12071, Spain
| | - María Paz Muñoz
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK. .,Department of Chemistry, Lancaster University, Bailrigg, Lancaster, LA1 4YB, UK
| | - María J Marín
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK.
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3
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Arnau Del Valle C, Williams L, Thomas P, Johnson R, Raveenthiraraj S, Warren D, Sobolewski A, Muñoz MP, Galindo F, Marín MJ. A highly photostable and versatile two-photon fluorescent probe for the detection of a wide range of intracellular nitric oxide concentrations in macrophages and endothelial cells. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2022; 234:112512. [PMID: 35850002 DOI: 10.1016/j.jphotobiol.2022.112512] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/20/2022] [Accepted: 07/02/2022] [Indexed: 06/15/2023]
Abstract
Nitric oxide (NO) is involved in many biological processes affecting the cardiovascular, nervous and immune systems. Intracellular NO can be monitored using fluorescent probes in combination with fluorescence imaging techniques. Most of the currently available NO fluorescent molecular probes are excited via one-photon excitation using UV or Vis light, which results in poor penetration and high photodamage to living tissues. Here, we report a two-photon fluorescent molecular probe, DANPY-NO, able to detect NO in live cells. The probe consists of an o-phenylenediamine linked to a naphthalimide core; and operates via photoinduced electron transfer. DANPY-NO exhibits good sensitivity (LOD of 77.8 nM) and high selectivity towards NO, and is stable over a broad range of pHs. The probe targeted acidic organelles within macrophages and endothelial cells, and demonstrated enhanced photostability over a commercially available NO probe. DANPY-NO was used to selectively detect endogenous NO in RAW264.7ϒ NO- macrophages, THP-1 human leukemic cells, primary mouse (bone marrow-derived) macrophages and endothelial cells. The probe was also able to detect exogenous NO in endothelial cells and distinguish between increasing concentrations of NO. The NO detection was evidenced using confocal laser scanning and two-photon microscopies, and flow cytometry. Further evidence was obtained by recording the changes in the intracellular fluorescence emission spectrum of the probe. Importantly, the probe displayed negligible toxicity to the analysed biological samples. The excellent sensitivity, selectivity, stability and versatility of DANPY-NO confirm its potential for in vitro and in vivo imaging of NO.
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Affiliation(s)
- Carla Arnau Del Valle
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
| | - Lewis Williams
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
| | - Paul Thomas
- Faculty of Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
| | - Robert Johnson
- School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
| | | | - Derek Warren
- School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
| | - Anastasia Sobolewski
- School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
| | - María Paz Muñoz
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
| | - Francisco Galindo
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, Av. Sos Baynat s/n, Castellón de la Plana 12071, Spain
| | - María J Marín
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK.
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4
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Song G, Jiang D, Wang L, Sun X, Liu H, Tian Y, Chen M. A series of simple curcumin-derived colorimetric and fluorescent probes for ratiometric-pH sensing and cell imaging. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.06.076] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Wang Y, Feng M, Lin B, Peng X, Wang Z, Lv R. MET-targeted NIR II luminescence diagnosis and up-conversion guided photodynamic therapy for triple-negative breast cancer based on a lanthanide nanoprobe. NANOSCALE 2021; 13:18125-18133. [PMID: 34605506 DOI: 10.1039/d1nr05847a] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this research, degradable peptide-modified upconversion nanoparticles (ZUPEA) were designed for the NIR II imaging and upconversion luminescence (UCL) guided photodynamic therapy (PDT) of triple-negative breast cancer (TNBC). Ultra-small rare-earth nanoparticles (RENPs) and the polymer mPEG-PLGA are polymerized into nano-microspheres via a double emulsion synthesis method, and a photosensitizer molecule (ZnPc) is added during the polymerization process to generate ZUPEA. Under 980 nm excitation, this strategy enhanced the red emission at 650 nm, showing an energy transfer efficiency of 38.3%, and the designed RENPs have better NIR II imaging abilities with a core@shell structure. These ZUPEA nanoparticles have good photodynamic therapeutic effects in vitro, and they can be degraded into small nanoparticles with a size of less than 6 nm. The cMBP-peptide-modified luminescent probe can recognize MDA-MB-231 TNBC cells in vivo when intravenously injected due to the positive targeted imaging effects of the cMBP peptide toward MET and negative targeted imaging effects relating to enhanced permeability and retention (EPR ). This specially designed ZUPEA probe with integrated diagnosis and treatment functionality provides new ideas and prospects for the use of rare-earth nanoparticles in the clinical treatment of tumors.
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Affiliation(s)
- Yanxing Wang
- Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, Shanxi 710071, China.
| | - Miao Feng
- Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, Shanxi 710071, China.
| | - Bi Lin
- Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, Shanxi 710071, China.
| | - Xiangrong Peng
- Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, Shanxi 710071, China.
| | - Zhan Wang
- Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, Shanxi 710071, China.
| | - Ruichan Lv
- Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, Shanxi 710071, China.
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6
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Du F, Cheng Z, Wang G, Li M, Lu W, Shuang S, Dong C. Carbon Nanodots as a Multifunctional Fluorescent Sensing Platform for Ratiometric Determination of Vitamin B 2 and "Turn-Off" Detection of pH. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:2836-2844. [PMID: 33621092 DOI: 10.1021/acs.jafc.0c07019] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this work, we synthesized carbon nanodots (CNDs) by a one-pot hydrothermal method to carbonize precursors of dry carnation petals and polyethylenimine. The obtained CNDs possess favorable photostability, good biocompatibility, and excellent water solubility, which can serve as a dual-responsive nanosensor for the determination of vitamin B2 (VB2) and pH. A unique ratiometric fluorescence resonance energy transfer probe was developed through a strong interaction between VB2 and surface moieties of CNDs. CNDs emitted at 470 nm; however, in the presence of VB2, an enhanced emission peak was clearly observed at 532 nm. The value of I532/I470 exhibits a stable response to the VB2 concentration from 0.35 to 35.9 μM with a detection limit of 37.2 nM, which has been used for VB2 detection in food and medicine samples and ratiometric imaging of VB2 in living cells with satisfying performance. In addition, the proposed CNDs also displayed pH-sensitive behavior and can be a turn-off fluorescent sensor to monitor pH. The fluorescent intensity at 470 nm is a good linear response against pH values from 3.6 to 8, affording the capability as a single-emissive nanoprobe for intracellular pH sensing.
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Affiliation(s)
- Fangfang Du
- Institute of Environmental Science and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China
| | - Zhe Cheng
- Institute of Environmental Science and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China
| | - Guanghui Wang
- Institute of Environmental Science and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China
| | - Minglu Li
- Institute of Environmental Science and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China
| | - Wenjing Lu
- Institute of Environmental Science and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China
| | - Shaomin Shuang
- Institute of Environmental Science and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China
| | - Chuan Dong
- Institute of Environmental Science and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China
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7
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Gayathri P, Nag P, Anand N, Vennapusa SR, Pannipara M, Al-Sehemi AG, Moon D, Anthony SP. Molecular conformational twist-controlled wide fluorescence tuning and white light emission in a single fluorophore via halochromism. NEW J CHEM 2021. [DOI: 10.1039/d1nj04911a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Conformational differences-controlled fluorescence response of carbazole and triphenylamine appended cyano-pyridine donor–acceptor derivatives towards organic acids (TFA/PTSA).
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Affiliation(s)
- Parthasarathy Gayathri
- School of Chemical & Biotechnology, SASTRA Deemed University, Thanjavur – 613401, Tamil Nadu, India
| | - Probal Nag
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram, Kerala – 695551, India
| | - Neethu Anand
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram, Kerala – 695551, India
| | - Sivaranjana Reddy Vennapusa
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram, Kerala – 695551, India
| | - Mehboobali Pannipara
- Department of Chemistry, King Khalid University, Abha 61413, Saudi Arabia
- Research Center for Advanced Materials Science, King Khalid University, Abha 61413, Saudi Arabia
| | - Abdullah G. Al-Sehemi
- Department of Chemistry, King Khalid University, Abha 61413, Saudi Arabia
- Research Center for Advanced Materials Science, King Khalid University, Abha 61413, Saudi Arabia
| | - Dohyun Moon
- Beamline Department, Pohang Accelerator Laboratory, 80 Jigokro-127beongil, Nam-gu, Pohang, Gyeongbuk, Korea
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8
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Steinegger A, Wolfbeis OS, Borisov SM. Optical Sensing and Imaging of pH Values: Spectroscopies, Materials, and Applications. Chem Rev 2020; 120:12357-12489. [PMID: 33147405 PMCID: PMC7705895 DOI: 10.1021/acs.chemrev.0c00451] [Citation(s) in RCA: 182] [Impact Index Per Article: 45.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Indexed: 12/13/2022]
Abstract
This is the first comprehensive review on methods and materials for use in optical sensing of pH values and on applications of such sensors. The Review starts with an introduction that contains subsections on the definition of the pH value, a brief look back on optical methods for sensing of pH, on the effects of ionic strength on pH values and pKa values, on the selectivity, sensitivity, precision, dynamic ranges, and temperature dependence of such sensors. Commonly used optical sensing schemes are covered in a next main chapter, with subsections on methods based on absorptiometry, reflectometry, luminescence, refractive index, surface plasmon resonance, photonic crystals, turbidity, mechanical displacement, interferometry, and solvatochromism. This is followed by sections on absorptiometric and luminescent molecular probes for use pH in sensors. Further large sections cover polymeric hosts and supports, and methods for immobilization of indicator dyes. Further and more specific sections summarize the state of the art in materials with dual functionality (indicator and host), nanomaterials, sensors based on upconversion and 2-photon absorption, multiparameter sensors, imaging, and sensors for extreme pH values. A chapter on the many sensing formats has subsections on planar, fiber optic, evanescent wave, refractive index, surface plasmon resonance and holography based sensor designs, and on distributed sensing. Another section summarizes selected applications in areas, such as medicine, biology, oceanography, bioprocess monitoring, corrosion studies, on the use of pH sensors as transducers in biosensors and chemical sensors, and their integration into flow-injection analyzers, microfluidic devices, and lab-on-a-chip systems. An extra section is devoted to current challenges, with subsections on challenges of general nature and those of specific nature. A concluding section gives an outlook on potential future trends and perspectives.
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Affiliation(s)
- Andreas Steinegger
- Institute
of Analytical Chemistry and Food Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Otto S. Wolfbeis
- Institute
of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, D-93040 Regensburg, Germany
| | - Sergey M. Borisov
- Institute
of Analytical Chemistry and Food Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
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9
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Yang X, Qin X, Zhu F, Shi W. A through-bond energy transfer-based ratiometric fluorescent pH probe: For extreme acidity and extreme alkaline detection with large emission shifts. Talanta 2019; 200:350-356. [DOI: 10.1016/j.talanta.2019.03.066] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 03/08/2019] [Accepted: 03/16/2019] [Indexed: 10/27/2022]
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10
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Shamsipur M, Barati A, Nematifar Z. Fluorescent pH nanosensors: Design strategies and applications. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2019. [DOI: 10.1016/j.jphotochemrev.2019.03.001] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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11
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Dong B, Du S, Wang C, Fu H, Li Q, Xiao N, Yang J, Xue X, Cai W, Liu D. Reversible Self-Assembly of Nanoprobes in Live Cells for Dynamic Intracellular pH Imaging. ACS NANO 2019; 13:1421-1432. [PMID: 30730703 DOI: 10.1021/acsnano.8b07054] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Self-assembly is a powerful tool to organize the elementary molecular units into functional nanostructures, which provide reversible stimulus-responsive systems for a variety of purposes. However, the ability to modulate the reversible self-assembly in live systems remains a great challenge owing to the chemical complexity of intracellular environments, which often damage synthetic assembled superstructures. Herein, we describe a robust reversible self-assembly system that is composed of a hydrophobic gold nanoparticle (AuNP) core and a shell of pH-responsive dye-incorporated block copolymers. The reversible assembly-disassembly processes were precisely controlled through mediating the molecular interactions between the copolymers and AuNPs. More importantly, the major endogenous biospecies such as proteins will not impair the reversible self-assembly, which was supported by free-energy calculations. The reversible pH-responsive nanostructures were employed as "smart" probes for visualizing the subtle dynamic pH changes among different intracellular compartments, facilitating the study of pH influence on biological processes.
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Affiliation(s)
- Bo Dong
- College of Chemistry, Research Center for Analytical Sciences, and Tianjin Key Laboratory of Molecular Recognition and Biosensing , Nankai University , Tianjin 300071 , China
| | - Shuangli Du
- College of Chemistry, Research Center for Analytical Sciences, and Tianjin Key Laboratory of Molecular Recognition and Biosensing , Nankai University , Tianjin 300071 , China
| | - Chunxiao Wang
- State Key Laboratory of Medicinal Chemical Biology , Nankai University , Tianjin 300071 , China
| | - Haohao Fu
- College of Chemistry, Research Center for Analytical Sciences, and Tianjin Key Laboratory of Molecular Recognition and Biosensing , Nankai University , Tianjin 300071 , China
| | - Qiang Li
- College of Chemistry, Research Center for Analytical Sciences, and Tianjin Key Laboratory of Molecular Recognition and Biosensing , Nankai University , Tianjin 300071 , China
| | - Nannan Xiao
- State Key Laboratory of Medicinal Chemical Biology , Nankai University , Tianjin 300071 , China
| | - Jie Yang
- College of Chemistry, Research Center for Analytical Sciences, and Tianjin Key Laboratory of Molecular Recognition and Biosensing , Nankai University , Tianjin 300071 , China
| | - Xue Xue
- State Key Laboratory of Medicinal Chemical Biology , Nankai University , Tianjin 300071 , China
| | - Wensheng Cai
- College of Chemistry, Research Center for Analytical Sciences, and Tianjin Key Laboratory of Molecular Recognition and Biosensing , Nankai University , Tianjin 300071 , China
| | - Dingbin Liu
- College of Chemistry, Research Center for Analytical Sciences, and Tianjin Key Laboratory of Molecular Recognition and Biosensing , Nankai University , Tianjin 300071 , China
- State Key Laboratory of Medicinal Chemical Biology , Nankai University , Tianjin 300071 , China
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12
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Ahmed S, Chauhan VM, Ghaemmaghami AM, Aylott JW. New generation of bioreactors that advance extracellular matrix modelling and tissue engineering. Biotechnol Lett 2019; 41:1-25. [PMID: 30368691 PMCID: PMC6313369 DOI: 10.1007/s10529-018-2611-7] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 09/26/2018] [Indexed: 12/12/2022]
Abstract
Bioreactors hold a lot of promise for tissue engineering and regenerative medicine applications. They have multiple uses including cell cultivation for therapeutic production and for in vitro organ modelling to provide a more physiologically relevant environment for cultures compared to conventional static conditions. Bioreactors are often used in combination with scaffolds as the nutrient flow can enhance oxygen and diffusion throughout the 3D constructs to prevent the formation of necrotic cores. A variety of scaffolds have been fabricated to achieve a structural architecture that mimic native extracellular matrix. Future developments of in vitro models will incorporate the ability to non-invasively monitor the cellular microenvironment to enhance the understanding of in vitro conditions. This review details current advancements in bioreactor and scaffold systems and provides insight on how in vitro models can be augmented for future biomedical applications.
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Affiliation(s)
- Shehnaz Ahmed
- School of Pharmacy, University of Nottingham, Boots Sciences Building, University Park, Nottingham, UK
| | - Veeren M. Chauhan
- School of Pharmacy, University of Nottingham, Boots Sciences Building, University Park, Nottingham, UK
| | - Amir M. Ghaemmaghami
- School of Life Sciences, University of Nottingham, Life Sciences Building, University Park, Nottingham, NG7 2RD UK
| | - Jonathan W. Aylott
- School of Pharmacy, University of Nottingham, Boots Sciences Building, University Park, Nottingham, UK
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13
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Hu B, Cheng R, Gao X, Pan X, Kong F, Liu X, Xu K, Tang B. Targetable Mesoporous Silica Nanoprobes for Mapping the Subcellular Distribution of H 2Se in Cancer Cells. ACS APPLIED MATERIALS & INTERFACES 2018; 10:17345-17351. [PMID: 29708719 DOI: 10.1021/acsami.8b02206] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Hydrogen selenide, a highly active reductant, is believed as a key molecule in the cytotoxicity of inorganic selenium compounds. However, the detail mechanism has hardly been studied because the distribution of H2Se in the subcellular organelles remains unclear. Herein, we exploited a series of novel targetable mesoporous silica nanoplatforms to map the distribution of H2Se in cytoplasm, lysosome, and mitochondria of cancer cells. The subcellular targeting moiety-conjugated mesoporous silica nanoparticles were assembled with a near-infrared fluorescent probe (NIR-H2Se) for detecting endogenous H2Se in the corresponding organelles. The confocal fluorescence imaging of cancer cells induced by Na2SeO3 found out a higher concentration of H2Se accumulated only in mitochondria. Consequently, the H2Se burst in mitochondria-triggered mitochondrial collapse that led to cell apoptosis. Hence, the selenite-induced cytotoxicity in cancer cells associates with the alteration in mitochondrial function caused by high level of H2Se. These findings provide a new way to explore the tumor cell apoptosis signaling pathways induced by Na2SeO3, meanwhile, we propose a research strategy for tracking the biomolecules in the subcellular organelles and the correlative cellular function and related disease diagnosis.
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Affiliation(s)
- Bo Hu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals , Shandong Normal University , Jinan 250014 , P. R. China
| | - Ranran Cheng
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals , Shandong Normal University , Jinan 250014 , P. R. China
| | - Xiaonan Gao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals , Shandong Normal University , Jinan 250014 , P. R. China
| | - Xiaohong Pan
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals , Shandong Normal University , Jinan 250014 , P. R. China
| | - Fanpeng Kong
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals , Shandong Normal University , Jinan 250014 , P. R. China
| | - Xiaojun Liu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals , Shandong Normal University , Jinan 250014 , P. R. China
| | - Kehua Xu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals , Shandong Normal University , Jinan 250014 , P. R. China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals , Shandong Normal University , Jinan 250014 , P. R. China
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Huang X, Song J, Yung BC, Huang X, Xiong Y, Chen X. Ratiometric optical nanoprobes enable accurate molecular detection and imaging. Chem Soc Rev 2018; 47:2873-2920. [PMID: 29568836 PMCID: PMC5926823 DOI: 10.1039/c7cs00612h] [Citation(s) in RCA: 450] [Impact Index Per Article: 75.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Exploring and understanding biological and pathological changes are of great significance for early diagnosis and therapy of diseases. Optical sensing and imaging approaches have experienced major progress in this field. Particularly, an emergence of various functional optical nanoprobes has provided enhanced sensitivity, specificity, targeting ability, as well as multiplexing and multimodal capabilities due to improvements in their intrinsic physicochemical and optical properties. However, one of the biggest challenges of conventional optical nanoprobes is their absolute intensity-dependent signal readout, which causes inaccurate sensing and imaging results due to the presence of various analyte-independent factors that can cause fluctuations in their absolute signal intensity. Ratiometric measurements provide built-in self-calibration for signal correction, enabling more sensitive and reliable detection. Optimizing nanoprobe designs with ratiometric strategies can surmount many of the limitations encountered by traditional optical nanoprobes. This review first elaborates upon existing optical nanoprobes that exploit ratiometric measurements for improved sensing and imaging, including fluorescence, surface enhanced Raman scattering (SERS), and photoacoustic nanoprobes. Next, a thorough discussion is provided on design strategies for these nanoprobes, and their potential biomedical applications for targeting specific biomolecule populations (e.g. cancer biomarkers and small molecules with physiological relevance), for imaging the tumor microenvironment (e.g. pH, reactive oxygen species, hypoxia, enzyme and metal ions), as well as for intraoperative image guidance of tumor-resection procedures.
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Affiliation(s)
- Xiaolin Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China. and Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, USA.
| | - Jibin Song
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, USA. and MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou 350108, P. R. China
| | - Bryant C Yung
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, USA.
| | - Xiaohua Huang
- Department of Chemistry, University of Memphis, 213 Smith Chemistry Bldg., Memphis, TN 38152, USA
| | - Yonghua Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China.
| | - Xiaoyuan Chen
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, USA.
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15
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Leggett R, Thomas P, Marín MJ, Gavrilovic J, Russell DA. Imaging of compartmentalised intracellular nitric oxide, induced during bacterial phagocytosis, using a metalloprotein-gold nanoparticle conjugate. Analyst 2017; 142:4099-4105. [PMID: 28960221 PMCID: PMC5708316 DOI: 10.1039/c7an00898h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 08/02/2017] [Indexed: 01/12/2023]
Abstract
Nitric oxide (NO) plays an essential role within the immune system since it is involved in the break-down of infectious agents such as viruses and bacteria. The ability to measure the presence of NO in the intracellular environment would provide a greater understanding of the pathophysiological mechanism of this important molecule. Here we report the detection of NO from the intracellular phagolysosome using a fluorescently tagged metalloprotein-gold nanoparticle conjugate. The metalloprotein cytochrome c, fluorescently tagged with an Alexa Fluor dye, was self-assembled onto gold nanoparticles to produce a NO specific nanobiosensor. Upon binding of NO, the cytochrome c protein changes conformation which induces an increase of fluorescence intensity of the tagged protein proportional to the NO concentration. The nanobiosensor was sensitive to NO in a reversible and selective manner, and exhibited a linear response at NO concentrations between 1 and 300 μM. In RAW264.7γ NO- macrophage cells, the nanobiosensor was used to detect the presence of NO that had been endogenously generated upon stimulation of the cells with interferon-γ and lipopolysaccharide, or spontaneously released following treatment of the cells with a NO donor. Significantly, the nanobiosensor was shown to be taken up by the macrophages within phagolysosomes, i.e., the precise location where the NO, together with other species, destroys bacterial infection. The nanobiosensor measured, for the first time, increasing concentrations of NO produced during combined stimulation and phagocytosis of Escherichia coli bacteria from within localised intracellular phagolysosomes, a key part of the immune system.
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Affiliation(s)
- Richard Leggett
- School of Chemistry , University of East Anglia , Norwich Research Park , Norwich , Norfolk NR4 7TJ , UK .
| | - Paul Thomas
- School of Biological Sciences , University of East Anglia , Norwich Research Park , Norwich , Norfolk NR4 7TJ , UK .
| | - María J. Marín
- School of Chemistry , University of East Anglia , Norwich Research Park , Norwich , Norfolk NR4 7TJ , UK .
| | - Jelena Gavrilovic
- School of Biological Sciences , University of East Anglia , Norwich Research Park , Norwich , Norfolk NR4 7TJ , UK .
| | - David A. Russell
- School of Chemistry , University of East Anglia , Norwich Research Park , Norwich , Norfolk NR4 7TJ , UK .
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16
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17
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Zhang Y, Guo S, Cheng S, Ji X, He Z. Label-free silicon nanodots featured ratiometric fluorescent aptasensor for lysosomal imaging and pH measurement. Biosens Bioelectron 2017; 94:478-484. [PMID: 28342376 DOI: 10.1016/j.bios.2017.03.041] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 03/14/2017] [Accepted: 03/19/2017] [Indexed: 12/25/2022]
Abstract
The homeostasis of lysosomal pH is crucial in cell physiology. Developing small fluorescent nanosensors for lysosome imaging and ratiometric measurement of pH is highly demanded yet challenging. Herein, a pH-sensitive fluorescein tagged aptamer AS1411 has been utilized to covalently modify the label-free fluorescent silicon nanodots via a crosslinker for construction of a ratiometric pH biosensor. The established aptasensor exhibits the advantages of ultrasmall size, hypotoxicity, excellent pH reversibility and good photostability, which favors its application in an intracellular environment. Using human breast MCF-7 cancer cells and MCF-10A normal cells as the model, this aptasensor shows cell specificity for cancer cells and displays a wide pH response range of 4.5-8.0 in living cells. The results demonstrate that the pH of MCF-7 cells is 5.1, which is the expected value for acidic organelles. Lysosome imaging and accurate measurement of pH in MCF-7 cells have been successfully conducted based on this nanosensor via fluorescent microscopy and flow cytometry.
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Affiliation(s)
- Yanan Zhang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Shan Guo
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Shibo Cheng
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Xinghu Ji
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Zhike He
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
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18
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Sharma DK, Irfanullah M, Basu SK, Madhu S, De S, Jadhav S, Ravikanth M, Chowdhury A. An approach to estimate spatial distribution of analyte within cells using spectrally-resolved fluorescence microscopy. Methods Appl Fluoresc 2017; 5:014003. [DOI: 10.1088/2050-6120/5/1/014003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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19
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Vanessa Saura A, Isabel Burguete M, Galindo F, Luis SV. Novel fluorescent anthracene–bodipy dyads displaying sensitivity to pH and turn-on behaviour towards Cu(ii) ions. Org Biomol Chem 2017; 15:3013-3024. [DOI: 10.1039/c7ob00274b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The effect of the nature of the spacer in three new bichromophoric compounds showing intramolecular PET and EET processes has been studied.
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Affiliation(s)
- A. Vanessa Saura
- Universitat Jaume I
- Departamento de Química Inorgánica y Orgánica
- Castellón
- Spain
| | - M. Isabel Burguete
- Universitat Jaume I
- Departamento de Química Inorgánica y Orgánica
- Castellón
- Spain
| | - Francisco Galindo
- Universitat Jaume I
- Departamento de Química Inorgánica y Orgánica
- Castellón
- Spain
| | - Santiago V. Luis
- Universitat Jaume I
- Departamento de Química Inorgánica y Orgánica
- Castellón
- Spain
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20
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Pratiwi FW, Hsia CH, Kuo CW, Yang SM, Hwu YK, Chen P. Construction of single fluorophore ratiometric pH sensors using dual-emission Mn2+-doped quantum dots. Biosens Bioelectron 2016; 84:133-40. [DOI: 10.1016/j.bios.2016.01.079] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 01/26/2016] [Accepted: 01/28/2016] [Indexed: 01/04/2023]
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21
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Chu B, Wang H, Song B, Peng F, Su Y, He Y. Fluorescent and Photostable Silicon Nanoparticles Sensors for Real-Time and Long-Term Intracellular pH Measurement in Live Cells. Anal Chem 2016; 88:9235-42. [PMID: 27539306 DOI: 10.1021/acs.analchem.6b02488] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Fluorescent sensors suitable for dynamic measurement of intracellular pH (pHi) fluctuations should feature the following properties: feeble cytotoxicity, wide-pH range response, and strong fluorescence coupled with good photostability, which are still remaining scanty to date. Herein, by functionalizing fluorescent silicon nanoparticles (SiNPs) with pH-sensitive dopamine (DA) and pH-insensitive rhodamine B isothiocyanate (RBITC), we present the first demonstration of fluorescent SiNPs-based sensors, simultaneously exhibiting minimal toxicity (cell viability of treated cells remains above 95% during 24-h treatment), sensitive fluorescent response to a broad pH range (∼4-10), and bright fluorescence coupled with robust photostability (∼9% loss of fluorescence intensity after 40 min continuous excitation; in contrast, fluorescence of Lyso-tracker is rapidly quenched in 5 min under the same experiment conditions). Taking advantage of these merits, we further employ the resultant fluorescent SiNPs sensors for the detection of lysosomal pH change mediated by nigericin in live HeLa and MCF-7 cells in long-term (e.g., 30 min) manners. Interestingly, two consecutive stages, i.e., alkalization lag phase and logarithmic growth phase, are observed based on recording the whole process of pH change, offering important information for understanding the dynamic process of pHi fluctuations.
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Affiliation(s)
- Binbin Chu
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano & Soft Materials (FUNSOM), and Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC), Soochow University , Suzhou, Jiangsu 215123, China
| | - Houyu Wang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano & Soft Materials (FUNSOM), and Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC), Soochow University , Suzhou, Jiangsu 215123, China
| | - Bin Song
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano & Soft Materials (FUNSOM), and Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC), Soochow University , Suzhou, Jiangsu 215123, China
| | - Fei Peng
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano & Soft Materials (FUNSOM), and Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC), Soochow University , Suzhou, Jiangsu 215123, China
| | - Yuanyuan Su
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano & Soft Materials (FUNSOM), and Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC), Soochow University , Suzhou, Jiangsu 215123, China
| | - Yao He
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano & Soft Materials (FUNSOM), and Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC), Soochow University , Suzhou, Jiangsu 215123, China
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22
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Wang Y, Lu L, Peng H, Xu J, Wang F, Qi R, Xu Z, Zhang W. Multi-doped carbon dots with ratiometric pH sensing properties for monitoring enzyme catalytic reactions. Chem Commun (Camb) 2016; 52:9247-50. [PMID: 27353571 DOI: 10.1039/c6cc02874h] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Multi-doped carbon dots (C-dots) were synthesized using a facile one-pot solvothermal method, and the C-dots can be used as a ratiometric pH probe directly without integrating with other dyes, which was demonstrated by monitoring the proton-producing enzyme catalytic reactions.
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Affiliation(s)
- Ya Wang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, P. R. China.
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23
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Pan W, Wang H, Yang L, Yu Z, Li N, Tang B. Ratiometric Fluorescence Nanoprobes for Subcellular pH Imaging with a Single-Wavelength Excitation in Living Cells. Anal Chem 2016; 88:6743-8. [DOI: 10.1021/acs.analchem.6b01010] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Wei Pan
- College of Chemistry,
Chemical
Engineering and Materials Science, Collaborative Innovation Center
of Functionalized Probes for Chemical Imaging in Universities of Shandong,
Key Laboratory of Molecular and Nano Probes, Ministry of Education,
Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, People’s Republic of China
| | - Honghong Wang
- College of Chemistry,
Chemical
Engineering and Materials Science, Collaborative Innovation Center
of Functionalized Probes for Chemical Imaging in Universities of Shandong,
Key Laboratory of Molecular and Nano Probes, Ministry of Education,
Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, People’s Republic of China
| | - Limin Yang
- College of Chemistry,
Chemical
Engineering and Materials Science, Collaborative Innovation Center
of Functionalized Probes for Chemical Imaging in Universities of Shandong,
Key Laboratory of Molecular and Nano Probes, Ministry of Education,
Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, People’s Republic of China
| | - Zhengze Yu
- College of Chemistry,
Chemical
Engineering and Materials Science, Collaborative Innovation Center
of Functionalized Probes for Chemical Imaging in Universities of Shandong,
Key Laboratory of Molecular and Nano Probes, Ministry of Education,
Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, People’s Republic of China
| | - Na Li
- College of Chemistry,
Chemical
Engineering and Materials Science, Collaborative Innovation Center
of Functionalized Probes for Chemical Imaging in Universities of Shandong,
Key Laboratory of Molecular and Nano Probes, Ministry of Education,
Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, People’s Republic of China
| | - Bo Tang
- College of Chemistry,
Chemical
Engineering and Materials Science, Collaborative Innovation Center
of Functionalized Probes for Chemical Imaging in Universities of Shandong,
Key Laboratory of Molecular and Nano Probes, Ministry of Education,
Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, People’s Republic of China
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24
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Fu J, Ding C, Zhu A, Tian Y. An efficient core-shell fluorescent silica nanoprobe for ratiometric fluorescence detection of pH in living cells. Analyst 2016; 141:4766-71. [PMID: 27291898 DOI: 10.1039/c6an00981f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Intracellular pH plays a vital role in cell biology, including signal transduction, ion transport and homeostasis. Herein, a ratiometric fluorescent silica probe was developed to detect intracellular pH values. The pH sensitive dye fluorescein isothiocyanate isomer I (FITC), emitting green fluorescence, was hybridized with reference dye rhodamine B (RB), emitting red fluorescence, as a dual-emission fluorophore, in which RB was embedded in a silica core of ∼40 nm diameter. Moreover, to prevent fluorescence resonance energy transfer between FITC and RB, FITC was grafted onto the surface of core-shell silica colloidal particles with a shell thickness of 10-12 nm. The nanoprobe exhibited dual emission bands centered at 517 and 570 nm, under single wavelength excitation of 488 nm. RB encapsulated in silica was inert to pH change and only served as reference signals for providing built-in correction to avoid environmental effects. Moreover, FITC (λem = 517 nm) showed high selectivity toward H(+) against metal ions and amino acids, leading to fluorescence variation upon pH change. Consequently, variations of the two fluorescence intensities (Fgreen/Fred) resulted in a ratiometric pH fluorescent sensor. The specific nanoprobe showed good linearity with pH variation in the range of 6.0-7.8. It can be noted that the fluorescent silica probe demonstrated good water dispersibility, high stability and low cytotoxicity. Accordingly, imaging and biosensing of pH variation was successfully achieved in HeLa cells.
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Affiliation(s)
- Jingni Fu
- Department of Chemistry, Tongji University, Siping Road 1239, Shanghai 200092, China
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25
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Ma Y, Liang H, Zeng Y, Yang H, Ho CL, Xu W, Zhao Q, Huang W, Wong WY. Phosphorescent soft salt for ratiometric and lifetime imaging of intracellular pH variations. Chem Sci 2016; 7:3338-3346. [PMID: 29997827 PMCID: PMC6006953 DOI: 10.1039/c5sc04624f] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 02/04/2016] [Indexed: 12/30/2022] Open
Abstract
In contrast to traditional short-lived fluorescent probes, long-lived phosphorescent probes based on transition-metal complexes can effectively eliminate unwanted background interference by using time-resolved luminescence imaging techniques, such as photoluminescence lifetime imaging microscopy. Hence, phosphorescent probes have become one of the most attractive candidates for investigating biological events in living systems. However, most of them are based on single emission intensity changes, which might be affected by a variety of intracellular environmental factors. Ratiometric measurement allows simultaneous recording of two separated wavelengths instead of measuring mere intensity changes and thus offers built-in correction for environmental effects. Herein, for the first time, a soft salt based phosphorescent probe has been developed for ratiometric and lifetime imaging of intracellular pH variations in real time. Specifically, a pH sensitive cationic complex (C1) and a pH insensitive anionic complex (A1) are directly connected through electrostatic interaction to form a soft salt based probe (S1), which exhibits a ratiometric phosphorescent response to pH with two well-resolved emission peaks separated by about 150 nm (from 475 to 625 nm). This novel probe was then successfully applied for ratiometric and lifetime imaging of intracellular pH variations. Moreover, quantitative measurements of intracellular pH fluctuations caused by oxidative stress have been performed for S1 based on the pH-dependent calibration curve.
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Affiliation(s)
- Yun Ma
- Institute of Molecular Functional Materials , Department of Chemistry and Partner State Key Laboratory of Environmental and Biological Analysis , Hong Kong Baptist University , Waterloo Road , Hong Kong , P. R. China . ; ; Tel: +852 34117074
| | - Hua Liang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) , Institute of Advanced Materials (IAM) , Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , P. R. China . ; ; Tel: +86 25 85866396
| | - Yi Zeng
- Institute of Molecular Functional Materials , Department of Chemistry and Partner State Key Laboratory of Environmental and Biological Analysis , Hong Kong Baptist University , Waterloo Road , Hong Kong , P. R. China . ; ; Tel: +852 34117074
| | - Huiran Yang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) , Institute of Advanced Materials (IAM) , Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , P. R. China . ; ; Tel: +86 25 85866396
| | - Cheuk-Lam Ho
- Institute of Molecular Functional Materials , Department of Chemistry and Partner State Key Laboratory of Environmental and Biological Analysis , Hong Kong Baptist University , Waterloo Road , Hong Kong , P. R. China . ; ; Tel: +852 34117074
| | - Wenjuan Xu
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) , Institute of Advanced Materials (IAM) , Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , P. R. China . ; ; Tel: +86 25 85866396
| | - Qiang Zhao
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) , Institute of Advanced Materials (IAM) , Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , P. R. China . ; ; Tel: +86 25 85866396
| | - Wei Huang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) , Institute of Advanced Materials (IAM) , Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , P. R. China . ; ; Tel: +86 25 85866396
| | - Wai-Yeung Wong
- Institute of Molecular Functional Materials , Department of Chemistry and Partner State Key Laboratory of Environmental and Biological Analysis , Hong Kong Baptist University , Waterloo Road , Hong Kong , P. R. China . ; ; Tel: +852 34117074
- Institute of Polymer Optoelectronic Materials and Devices , State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , P. R. China
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26
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Li J, Cheng F, Huang H, Li L, Zhu JJ. Nanomaterial-based activatable imaging probes: from design to biological applications. Chem Soc Rev 2016. [PMID: 26214317 DOI: 10.1039/c4cs00476k] [Citation(s) in RCA: 124] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Activatable imaging probes as alternatives to "always on" imaging probes have attracted more and more attention due to their improved sensitivity and specificity. They are commonly designed to amplify or boost imaging signals only in response to specific biomolecular recognition or interaction. Thus, the design strategies play a vital role in the fabrication of activatable imaging probes. In this review, we focus on the design mechanisms and biological applications of those nanomaterial-based activatable imaging probes reported in the past five years, benefitting greatly from the good development of nanotechnology. These probes not only include the most studied activatable fluorescence imaging probes, but also cover more activatable MR imaging probes based on nanoparticle contrast agents and activatable photoacoustic imaging probes, providing more bases for clinical translation.
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Affiliation(s)
- Jingjing Li
- School of Medical Imaging, Xuzhou Medical College, Xuzhou 221004, China and Department of Radiology, Affiliated Hospital of Xuzhou Medical College, Xuzhou 221006, China
| | - Fangfang Cheng
- State Key Laboratory of Analytical Chemistry for Life Science, Collaborative Innovation of Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | - Haiping Huang
- State Key Laboratory of Analytical Chemistry for Life Science, Collaborative Innovation of Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | - Lingling Li
- State Key Laboratory of Analytical Chemistry for Life Science, Collaborative Innovation of Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | - Jun-Jie Zhu
- State Key Laboratory of Analytical Chemistry for Life Science, Collaborative Innovation of Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
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Bis(Naphthalimide-Piperazine)-Based Off-On Fluorescent Probe for Acids. J Fluoresc 2016; 26:807-11. [DOI: 10.1007/s10895-016-1767-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 01/05/2016] [Indexed: 11/26/2022]
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28
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Wang WJ, Xia JM, Feng J, He MQ, Chen ML, Wang JH. Green preparation of carbon dots for intracellular pH sensing and multicolor live cell imaging. J Mater Chem B 2016; 4:7130-7137. [DOI: 10.1039/c6tb02071b] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Nitrogen-doped carbon dots exhibit a distinct pH-sensitive/excitation-dependent photoluminescence emission feature within pH 4.0–8.0, facilitating intracellular pH sensing and multicolor imaging of live HeLa cells.
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Affiliation(s)
- Wen-Jing Wang
- Research Center for Analytical Sciences
- Department of Chemistry
- College of Sciences
- Northeastern University
- Shenyang 110819
| | - Jun-Mei Xia
- Research Center for Analytical Sciences
- Department of Chemistry
- College of Sciences
- Northeastern University
- Shenyang 110819
| | - Ji Feng
- Research Center for Analytical Sciences
- Department of Chemistry
- College of Sciences
- Northeastern University
- Shenyang 110819
| | - Meng-Qi He
- Research Center for Analytical Sciences
- Department of Chemistry
- College of Sciences
- Northeastern University
- Shenyang 110819
| | - Ming-Li Chen
- Research Center for Analytical Sciences
- Department of Chemistry
- College of Sciences
- Northeastern University
- Shenyang 110819
| | - Jian-Hua Wang
- Research Center for Analytical Sciences
- Department of Chemistry
- College of Sciences
- Northeastern University
- Shenyang 110819
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29
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Balijapalli U, Manickam S, Thiyagarajan MD, Iyer SK. Highly emissive, naked-eye solvatochromic probe based on styryl tetrahydrodibenzo[a,i]phenanthridine for acidochromic applications. RSC Adv 2016. [DOI: 10.1039/c6ra09359k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new series of 5-styryl tetrahydrodibenzo[a,i]phenanthridines was readily synthesized from β-tetralone, ammonium acetate and cinnamaldehydes and successfully applied to quantitatively detect pH in biological fluids and acid impurities in solvents.
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30
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Visual Identification of Light-Driven Breakage of the Silver-Dithiocarbamate Bond by Single Plasmonic Nanoprobes. Sci Rep 2015; 5:15427. [PMID: 26493773 PMCID: PMC4616019 DOI: 10.1038/srep15427] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 08/25/2015] [Indexed: 12/15/2022] Open
Abstract
Insight into the nature of metal-sulfur bond, a meaningful one in life science, interface chemistry and organometallic chemistry, is interesting but challenging. By utilizing the localized surface plasmon resonance properties of silver nanoparticles, herein we visually identified the photosensitivity of silver-dithiocarbamate (Ag-DTC) bond by using dark field microscopic imaging (iDFM) technique at single nanoparticle level. It was found that the breakage of Ag-DTC bond could be accelerated effectively by light irradiation, followed by a pH-dependent horizontal or vertical degradation of the DTC molecules, in which an indispensable preoxidation process of the silver was at first disclosed. These findings suggest a visualization strategy at single plasmonic nanoparticle level which can be excellently applied to explore new stimulus-triggered reactions, and might also open a new way to understand traditional organic reaction mechanisms.
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31
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Schäferling M. Nanoparticle-based luminescent probes for intracellular sensing and imaging of pH. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2015; 8:378-413. [PMID: 26395962 DOI: 10.1002/wnan.1366] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Revised: 07/06/2015] [Accepted: 07/22/2015] [Indexed: 12/13/2022]
Abstract
Fluorescence imaging microscopy is an essential tool in biomedical research. Meanwhile, various fluorescent probes are available for the staining of cells, cell membranes, and organelles. Though, to monitor intracellular processes and dysfunctions, probes that respond to ubiquitous chemical parameters determining the cellular function such as pH, pO2 , and Ca(2+) are required. This review is focused on the progress in the design, fabrication, and application of photoluminescent nanoprobes for sensing and imaging of pH in living cells. The advantages of using nanoprobes carrying fluorescent pH indicators compared to single molecule probes are discussed as well as their limitations due to the mostly lysosomal uptake by cells. Particular attention is paid to ratiometric dual wavelength nanosensors that enable intrinsic referenced measurements. Referencing and proper calibration procedures are basic prerequisites to carry out reliable quantitative pH determinations in complex samples such as living cells. A variety of examples will be presented that highlight the diverseness of nanocarrier materials (polymers, micelles, silica, quantum dots, carbon dots, gold, photon upconversion nanocrystals, or bacteriophages), fluorescent pH indicators for the weak acidic range, and referenced sensing mechanisms, that have been applied intracellularly up to now. WIREs Nanomed Nanobiotechnol 2016, 8:378-413. doi: 10.1002/wnan.1366 For further resources related to this article, please visit the WIREs website.
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Affiliation(s)
- Michael Schäferling
- Division 1.10 Biophotonics, Federal Institute for Materials Research and Testing, Berlin, Germany
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32
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Kim BJ, Cheong H, Hwang BH, Cha HJ. Mussel-Inspired Protein Nanoparticles Containing Iron(III)-DOPA Complexes for pH-Responsive Drug Delivery. Angew Chem Int Ed Engl 2015; 54:7318-22. [PMID: 25968933 DOI: 10.1002/anie.201501748] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 04/04/2015] [Indexed: 12/17/2022]
Abstract
A novel bioinspired strategy for protein nanoparticle (NP) synthesis to achieve pH-responsive drug release exploits the pH-dependent changes in the coordination stoichiometry of iron(III)-3,4-dihydroxyphenylalanine (DOPA) complexes, which play a major cross-linking role in mussel byssal threads. Doxorubicin-loaded polymeric NPs that are based on Fe(III)-DOPA complexation were thus synthesized with a DOPA-modified recombinant mussel adhesive protein through a co-electrospraying process. The release of doxorubicin was found to be predominantly governed by a change in the structure of the Fe(III)-DOPA complexes induced by an acidic pH value. It was also demonstrated that the fabricated NPs exhibited effective cytotoxicity towards cancer cells through efficient cellular uptake and cytosolic release. Therefore, it is anticipated that Fe(III)-DOPA complexation can be successfully utilized as a new design principle for pH-responsive NPs for diverse controlled drug-delivery applications.
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Affiliation(s)
- Bum Jin Kim
- Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784 (Korea)
| | - Hogyun Cheong
- Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784 (Korea)
| | - Byeong Hee Hwang
- Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784 (Korea).,Division of Bioengineering, Incheon National University, Incheon 406-772 (Korea)
| | - Hyung Joon Cha
- Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784 (Korea).
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33
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Kim BJ, Cheong H, Hwang BH, Cha HJ. Mussel-Inspired Protein Nanoparticles Containing Iron(III)-DOPA Complexes for pH-Responsive Drug Delivery. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501748] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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34
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Chen Y, Zhu C, Cen J, Bai Y, He W, Guo Z. Ratiometric detection of pH fluctuation in mitochondria with a new fluorescein/cyanine hybrid sensor. Chem Sci 2015; 6:3187-3194. [PMID: 28706690 PMCID: PMC5490428 DOI: 10.1039/c4sc04021j] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2014] [Accepted: 03/16/2015] [Indexed: 12/21/2022] Open
Abstract
The homeostasis of mitochondrial pH (pHm) is crucial in cell physiology. Developing small-molecular fluorescent sensors for the ratiometric detection of pHm fluctuation is highly demanded yet challenging. A ratiometric pH sensor, Mito-pH, was constructed by integrating a pH-sensitive FITC fluorophore with a pH-insensitive hemicyanine group. The hemicyanine group also acts as the mitochondria targeting group due to its lipophilic cationic nature. Besides its ability to target mitochondria, this sensor provides two ratiometric pH sensing modes, the dual excitation/dual emission mode (Dex/Dem) and dual excitation (Dex) mode, and its linear and reversible ratiometric response range from pH 6.15 to 8.38 makes this sensor suitable for the practical tracking of pHm fluctuation in live cells. With this sensor, stimulated pHm fluctuation has been successfully tracked in a ratiometric manner via both fluorescence imaging and flow cytometry.
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Affiliation(s)
- Yuncong Chen
- State Key Laboratory of Coordination Chemistry , Coordination Chemistry Institute , School of Chemistry and Chemical Engineering , Nanjing University , Hankou Road No.22 , Nanjing 210093 , PR China . ; ; ; Tel: +86-25-83597066
| | - Chengcheng Zhu
- State Key Laboratory of Coordination Chemistry , Coordination Chemistry Institute , School of Chemistry and Chemical Engineering , Nanjing University , Hankou Road No.22 , Nanjing 210093 , PR China . ; ; ; Tel: +86-25-83597066
| | - Jiajie Cen
- State Key Laboratory of Coordination Chemistry , Coordination Chemistry Institute , School of Chemistry and Chemical Engineering , Nanjing University , Hankou Road No.22 , Nanjing 210093 , PR China . ; ; ; Tel: +86-25-83597066
| | - Yang Bai
- State Key Laboratory of Coordination Chemistry , Coordination Chemistry Institute , School of Chemistry and Chemical Engineering , Nanjing University , Hankou Road No.22 , Nanjing 210093 , PR China . ; ; ; Tel: +86-25-83597066
| | - Weijiang He
- State Key Laboratory of Coordination Chemistry , Coordination Chemistry Institute , School of Chemistry and Chemical Engineering , Nanjing University , Hankou Road No.22 , Nanjing 210093 , PR China . ; ; ; Tel: +86-25-83597066
| | - Zijian Guo
- State Key Laboratory of Coordination Chemistry , Coordination Chemistry Institute , School of Chemistry and Chemical Engineering , Nanjing University , Hankou Road No.22 , Nanjing 210093 , PR China . ; ; ; Tel: +86-25-83597066
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35
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Tsou CJ, Hsia CH, Chu JY, Hung Y, Chen YP, Chien FC, Chou KC, Chen P, Mou CY. Local pH tracking in living cells. NANOSCALE 2015; 7:4217-4225. [PMID: 25672786 DOI: 10.1039/c4nr06545j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Continuous and simultaneous 3D single-particle movement and local pH detection in HeLa cells were demonstrated for the first time by combining fluorescent mesoporous silica nanoparticles (FMSNs) and a single-particle tracking (SPT) technique with a precision of ∼10 nm. FMSNs, synthesized by the co-condensation of both pH-sensitive and reference dyes with a silica/surfactant source, allow long-term reliable ratiometric pH measurements with a precision better than 0.3 pH unit because of their excellent brightness and stability. pH variation in the surrounding area of FMSNs during endocytosis was monitored in real-time. Acidification and low mobility of FMSNs were observed at the early endocytic stage, whereas basification and high mobility of FMSNs were observed at the late stage. Our results indicate that it is possible to monitor local pH changes in the environments surrounding nanoparticles during the cellular uptake process of FMSNs, which provides much needed information for designing an efficient drug delivery nanosystem.
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Affiliation(s)
- Chieh-Jui Tsou
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 106.
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36
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Li Y, Wang Y, Yang S, Zhao Y, Yuan L, Zheng J, Yang R. Hemicyanine-based High Resolution Ratiometric near-Infrared Fluorescent Probe for Monitoring pH Changes in Vivo. Anal Chem 2015; 87:2495-503. [DOI: 10.1021/ac5045498] [Citation(s) in RCA: 186] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Yinhui Li
- State Key Laboratory
of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Yijun Wang
- State Key Laboratory
of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Sheng Yang
- State Key Laboratory
of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Yirong Zhao
- State Key Laboratory
of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Lin Yuan
- State Key Laboratory
of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Jing Zheng
- State Key Laboratory
of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Ronghua Yang
- State Key Laboratory
of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
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37
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Saura AV, Marín MJ, Burguete MI, Russell DA, Galindo F, Luis SV. The synthesis of new fluorescent bichromophoric compounds as ratiometric pH probes for intracellular measurements. Org Biomol Chem 2015; 13:7736-49. [DOI: 10.1039/c5ob00704f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Three different bichromophoric compounds (1–3) containing an aminomethyl anthracene moiety linked to a second chromophore have been prepared and their fluorescent properties studied.
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Affiliation(s)
- A. Vanessa Saura
- Departamento de Química Inorgánica y Orgánica
- Universitat Jaume I
- Castellón
- Spain
| | | | - M. Isabel Burguete
- Departamento de Química Inorgánica y Orgánica
- Universitat Jaume I
- Castellón
- Spain
| | | | - Francisco Galindo
- Departamento de Química Inorgánica y Orgánica
- Universitat Jaume I
- Castellón
- Spain
| | - Santiago V. Luis
- Departamento de Química Inorgánica y Orgánica
- Universitat Jaume I
- Castellón
- Spain
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38
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Obaid G, Chambrier I, Cook MJ, Russell DA. Cancer targeting with biomolecules: a comparative study of photodynamic therapy efficacy using antibody or lectin conjugated phthalocyanine-PEG gold nanoparticles. Photochem Photobiol Sci 2015; 14:737-47. [DOI: 10.1039/c4pp00312h] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The functionalisation of therapeutic nanoparticle constructs with cancer-specific biomolecules can enable selective tumour accumulation and targeted treatment.
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Affiliation(s)
- Girgis Obaid
- School of Chemistry
- University of East Anglia
- Norwich
- UK
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39
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Shi W, Li X, Ma H. Fluorescent probes and nanoparticles for intracellular sensing of pH values. Methods Appl Fluoresc 2014; 2:042001. [DOI: 10.1088/2050-6120/2/4/042001] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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40
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Shi XL, Mao GJ, Zhang XB, Liu HW, Gong YJ, Wu YX, Zhou LY, Zhang J, Tan W. Rhodamine-based fluorescent probe for direct bio-imaging of lysosomal pH changes. Talanta 2014; 130:356-62. [DOI: 10.1016/j.talanta.2014.07.030] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 07/03/2014] [Accepted: 07/10/2014] [Indexed: 11/29/2022]
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41
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Li J, Zhang Y, Mei J, Lam JWY, Hao J, Tang BZ. Aggregation-Induced Emission Rotors: Rational Design and Tunable Stimuli Response. Chemistry 2014; 21:907-14. [DOI: 10.1002/chem.201405118] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Indexed: 01/09/2023]
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42
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Li J, Zhang Y, Mei J, Lam JWY, Hao J, Tang BZ. Aggregation-Induced Emission Rotors: Rational Design and Tunable Stimuli Response. Chemistry 2014; 21:4164-4164. [PMID: 25376501 DOI: 10.1002/chem.405118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Indexed: 11/09/2022]
Abstract
A novel molecular design strategy is provided to rationally tune the stimuli response of luminescent materials with aggregation-induced emission (AIE) characteristics. A series of new AIE-active molecules (AIE rotors) are prepared by covalently linking different numbers of tetraphenylethene moieties together. Upon gradually increasing the number of rotatable phenyl rings, the sensitivity of the response of the AIE rotors to viscosity and temperature is significantly enhanced. Although the molecular size is further enlarged, the performance is only slightly improved due to slightly increased effective rotors, but with largely increased rotational barriers. Such molecular engineering and experimental results offer more in-depth insight into the AIE mechanism, namely, restriction of intramolecular rotations. Notably, through this rational design, the AIE rotor with the largest molecular size turns out to be the most viscosensitive luminogen with a viscosity factor of up to 0.98.
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Affiliation(s)
- Jie Li
- Department of Chemistry, Institute for Advanced Study, Institute of Molecular Functional Materials, Division of Biomedical Engineering, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong (S.A.R. China)
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43
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Hu J, Liu G, Wang C, Liu T, Zhang G, Liu S. Spatiotemporal Monitoring Endocytic and Cytosolic pH Gradients with Endosomal Escaping pH-Responsive Micellar Nanocarriers. Biomacromolecules 2014; 15:4293-301. [DOI: 10.1021/bm501296d] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Jinming Hu
- CAS Key Laboratory of Soft
Matter Chemistry, Hefei National Laboratory for Physical Sciences
at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Guhuan Liu
- CAS Key Laboratory of Soft
Matter Chemistry, Hefei National Laboratory for Physical Sciences
at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Cheng Wang
- CAS Key Laboratory of Soft
Matter Chemistry, Hefei National Laboratory for Physical Sciences
at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Tao Liu
- CAS Key Laboratory of Soft
Matter Chemistry, Hefei National Laboratory for Physical Sciences
at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Guoying Zhang
- CAS Key Laboratory of Soft
Matter Chemistry, Hefei National Laboratory for Physical Sciences
at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Shiyong Liu
- CAS Key Laboratory of Soft
Matter Chemistry, Hefei National Laboratory for Physical Sciences
at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
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44
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Ke G, Zhu Z, Wang W, Zou Y, Guan Z, Jia S, Zhang H, Wu X, Yang CJ. A cell-surface-anchored ratiometric fluorescent probe for extracellular pH sensing. ACS APPLIED MATERIALS & INTERFACES 2014; 6:15329-15334. [PMID: 25111767 DOI: 10.1021/am503818n] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Accurate sensing of the extracellular pH is a very important yet challenging task in biological and clinical applications. This paper describes the development of an amphiphilic lipid-DNA molecule as a simple yet useful cell-surface-anchored ratiometric fluorescent probe for extracellular pH sensing. The lipid-DNA probe, which consists of a hydrophobic diacyllipid tail and a hydrophilic DNA strand, is modified with two fluorescent dyes; one is pH-sensitive as pH indicator and the other is pH-insensitive as an internal reference. The lipid-DNA probe showed sensitive and reversible response to pH change in the range of 6.0-8.0, which is suitable for most extracellular studies. In addition, based on simple hydrophobic interactions with the cell membrane, the lipid-DNA probe can be easily anchored on the cell surface with negligible cytotoxicity, excellent stability, and unique ratiometric readout, thus ensuring its accurate sensing of extracellular pH. Finally, this lipid-DNA-based ratiometric pH indicator was successfully used for extracellular pH sensing of cells in 3D culture environment, demonstrating the potential applications of the sensor in biological and medical studies.
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Affiliation(s)
- Guoliang Ke
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, the Key Laboratory for Chemical Biology of Fujian Province, The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, P. R. China
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45
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Yang B, Lv Y, Zhu JY, Han YT, Jia HZ, Chen WH, Feng J, Zhang XZ, Zhuo RX. A pH-responsive drug nanovehicle constructed by reversible attachment of cholesterol to PEGylated poly(l-lysine) via catechol-boronic acid ester formation. Acta Biomater 2014; 10:3686-95. [PMID: 24879311 DOI: 10.1016/j.actbio.2014.05.018] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 05/09/2014] [Accepted: 05/16/2014] [Indexed: 12/14/2022]
Abstract
The present work reports the construction of a drug delivery nanovehicle via a pH-sensitive assembly strategy for improved cellular internalization and intracellular drug liberation. Through spontaneous formation of boronate linkage in physiological conditions, phenylboronic acid-modified cholesterol was able to attach onto catechol-pending methoxypoly(ethylene glycol)-block-poly(l-lysine). This comb-type polymer can self-organize into a micellar nanoconstruction that is able to effectively encapsulate poorly water-soluble agents. The blank micelles exhibited negligible in vitro cytotoxicity, yet doxorubicin (DOX)-loaded micelles could effectively induce cell death at a level comparable to free DOX. Owing to the acid-labile feature of the boronate linkage, a reduction in environmental pH from pH 7.4 to 5.0 could trigger the dissociation of the nanoconstruction, which in turn could accelerate the liberation of entrapped drugs. Importantly, the blockage of endosomal acidification in HeLa cells by NH4Cl treatment significantly decreased the nuclear uptake efficiency and cell-killing effect mediated by the DOX-loaded nanoassembly, suggesting that acid-triggered destruction of the nanoconstruction is of significant importance in enhanced drug efficacy. Moreover, confocal fluorescence microscopy and flow cytometry assay revealed the effective internalization of the nanoassemblies, and their cellular uptake exhibited a cholesterol dose-dependent profile, indicating the contribution of introduced cholesterol functionality to the transmembrane process of the nanoassembly.
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Affiliation(s)
- Bin Yang
- Key Laboratory of Biomedical Polymers (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China
| | - Yin Lv
- Key Laboratory of Biomedical Polymers (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China
| | - Jing-Yi Zhu
- Key Laboratory of Biomedical Polymers (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China
| | - Yun-Tao Han
- Key Laboratory of Biomedical Polymers (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China
| | - Hui-Zhen Jia
- Key Laboratory of Biomedical Polymers (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China
| | - Wei-Hai Chen
- Key Laboratory of Biomedical Polymers (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China
| | - Jun Feng
- Key Laboratory of Biomedical Polymers (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China.
| | - Xian-Zheng Zhang
- Key Laboratory of Biomedical Polymers (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China
| | - Ren-Xi Zhuo
- Key Laboratory of Biomedical Polymers (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China
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46
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Gong P, Yang Y, Yi H, Fang S, Zhang P, Sheng Z, Gao G, Gao D, Cai L. Polypeptide micelles with dual pH activatable dyes for sensing cells and cancer imaging. NANOSCALE 2014; 6:5416-5424. [PMID: 24714804 DOI: 10.1039/c4nr00519h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
pH is an important control parameter for maintenance of cell viability and tissue functions. pH monitoring provides valuable information on cell metabolic processes and the living environment. In this study, we prepared dual pH-sensitive, fluorescent dye-loaded polypeptide nanoparticles (DPNs) for ratiometric sensing of pH changes in living cells. DPNs contain two types of dyes: N-(rhodamine B) lactam cystamine (RBLC), an acid activatable fluorescent dye with increased fluorescence in an acidic environment, and fluorescein isothiocyanate (FITC), a base activatable fluorescent dye with enhanced fluorescence in an alkaline environment. Hence, DPNs exhibited a dual response signal with strong red fluorescence and weak green fluorescence under acidic conditions; in contrast, they showed strong green fluorescence and almost no red fluorescence under alkaline and neutral conditions. The favorable inverse pH responses of the two fluorescent dyes resulted in ratiometric pH determination for DPNs with an optimized pH-sensitive range of pH 4.5-7.5. Quantitative analysis of the intracellular pH of intact MCF-7 cells has been successfully demonstrated with our nanosensor. Moreover, single acid activatable fluorescent dye doped polypeptide nanoparticles that only contained RBLC can distinguish tumor tissue from normal tissue by monitoring the acidic extracellular environment.
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Affiliation(s)
- Ping Gong
- Guangdong Key Laboratory of Nanomedicine, Shenzhen Key Laboratory of Cancer Nanotechnology, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, P. R. China.
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47
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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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48
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Yang Z, Cao J, He Y, Yang JH, Kim T, Peng X, Kim JS. Macro-/micro-environment-sensitive chemosensing and biological imaging. Chem Soc Rev 2014; 43:4563-601. [DOI: 10.1039/c4cs00051j] [Citation(s) in RCA: 604] [Impact Index Per Article: 60.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We have summarized the research progress on fluorescent sensors responsive to environmental factors, including local viscosity, polarity, temperature, hypoxia and pH.
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Affiliation(s)
- Zhigang Yang
- Department of Chemistry
- Korea University
- Seoul 136-701, Korea
- Key Laboratory of Sensor Analysis of Tumor Marker Ministry of Education
- College of Chemistry and Molecular Engineering
| | - Jianfang Cao
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024, China
| | - Yanxia He
- Department of Chemistry
- Korea University
- Seoul 136-701, Korea
- Key Laboratory of Sensor Analysis of Tumor Marker Ministry of Education
- College of Chemistry and Molecular Engineering
| | - Jung Ho Yang
- Department of Chemistry
- Korea University
- Seoul 136-701, Korea
| | - Taeyoung Kim
- Department of Chemistry
- Korea University
- Seoul 136-701, Korea
| | - Xiaojun Peng
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024, China
| | - Jong Seung Kim
- Department of Chemistry
- Korea University
- Seoul 136-701, Korea
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49
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Li G, Zhu D, Xue L, Jiang H. Quinoline-Based Fluorescent Probe for Ratiometric Detection of Lysosomal pH. Org Lett 2013; 15:5020-3. [DOI: 10.1021/ol4023547] [Citation(s) in RCA: 116] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Guoping Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China, and College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Dongjian Zhu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China, and College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Lin Xue
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China, and College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Hua Jiang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China, and College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
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Qu S, Chen H, Zheng X, Cao J, Liu X. Ratiometric fluorescent nanosensor based on water soluble carbon nanodots with multiple sensing capacities. NANOSCALE 2013; 5:5514-5518. [PMID: 23673389 DOI: 10.1039/c3nr00619k] [Citation(s) in RCA: 133] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A construction strategy for ratiometric fluorescent nanosensors based on water soluble C-dots was developed, which could sense temperature (10-82 °C), pH values (lower than 6.0 or higher than 8.6) and Fe(3+) ions (>0.04 μM) by monitoring the intensity ratios of dual fluorescence bands (Ib/Ig) under 380 nm excitation. Ib/Ig decreased nearly linearly with increasing temperature from 10 to 82 °C. In the pH range from 8.6 to 6.0, the Ib/Ig was nearly constant at 0.75. Ib/Ig gradually decreased from 0.75 to 0.52 in the pH range from 6.0 to 1.9, and increased nearly linearly from 0.52 to 0.75 in the pH range from 1.9 to 1.0. The dual fluorescence behavior was reversible in the pH range from 1.0 to 8.6. As pH increased from 10.6 to 13.0, the green fluorescence band decreased continuously and blue shifted with a nearly linear increase in Ib/Ig from 0.75 to 2.15, while the green fluorescence band cannot be recovered by decreasing the pH value. Ib/Ig was ultrasensitive and selective in presence of Fe(3+) (>0.04 μM) in neutral aqueous environments. The two fluorescence bands of the C-dots were attributed to different surface states that may produce different fluorescent signal responses to external physical or chemical stimuli.
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Affiliation(s)
- Songnan Qu
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, PR China.
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