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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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Sparks NE, Smith C, Stahl T, Amarasekara DL, Hamadani C, Lambert E, Tang SW, Kulkarni A, Derbigny BM, Dasanayake GS, Taylor G, Ghazala M, Hammer NI, Sokolov AY, Fitzkee NC, Tanner EEL, Watkins DL. NIR-II emissive donor-acceptor-donor fluorophores for dual fluorescence bioimaging and photothermal therapy applications. JOURNAL OF MATERIALS CHEMISTRY. C 2024; 12:4369-4383. [PMID: 38525159 PMCID: PMC10955863 DOI: 10.1039/d3tc04747d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 02/19/2024] [Indexed: 03/26/2024]
Abstract
Fluorescence bioimaging with near-infrared II (NIR-II) emissive organic fluorophores has proven to be a viable noninvasive diagnostic technique. However, there is still the need for the development of fluorophores that possess increased stability as well as functionalities that impart stimuli responsiveness. Through strategic design, we can synthesize fluorophores that possess not only NIR-II optical profiles but also pH-sensitivity and the ability to generate heat upon irradiation. In this work, we employ a donor-acceptor-donor (D-A-D) design to synthesize a series of NIR-II fluorophores. Here we use thienothiadiazole (TTD) as the acceptor, 3-hexylthiophene (HexT) as the π-spacer and vary the alkyl amine donor units: N,N-dimethylaniline (DMA), phenylpiperidine (Pip), and phenylmorpholine (Morp). Spectroscopic analysis shows that all three derivatives exhibit emission in the NIR-II region with λemimax ranging from 1030 to 1075 nm. Upon irradiation, the fluorophores exhibited noticeable heat generation through non-radiative processes. The ability to generate heat indicates that these fluorophores will act as theranostic (combination therapeutic and diagnostic) agents in which simultaneous visualization and treatment can be performed. Additionally, biosensing capabilities were supported by changes in the absorbance properties while under acidic conditions as a result of protonation of the alkyl amine donor units. The fluorophores also show minimal toxicity in a human mammary cell line and with murine red blood cells. Overall, initial results indicate viable NIR-II materials for multiple biomedical applications.
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Affiliation(s)
- Nicholas E Sparks
- Department of Chemistry and Biochemistry, The Ohio State University Columbus Ohio 43210 USA
| | - Cameron Smith
- Department of Chemistry and Biochemistry, University of Mississippi University Oxford MS USA
| | - Terrence Stahl
- Department of Chemistry and Biochemistry, The Ohio State University Columbus Ohio 43210 USA
| | - Dhanush L Amarasekara
- Department of Chemistry, Mississippi State University Mississippi State MS 39762 USA
| | - Christine Hamadani
- Department of Chemistry and Biochemistry, University of Mississippi University Oxford MS USA
| | - Ethan Lambert
- Department of Chemistry and Biochemistry, University of Mississippi University Oxford MS USA
| | - Sheng Wei Tang
- Department of Chemistry and Biochemistry, The Ohio State University Columbus Ohio 43210 USA
| | - Anuja Kulkarni
- Department of Chemistry and Biochemistry, The Ohio State University Columbus Ohio 43210 USA
| | - Blaine M Derbigny
- Department of Chemistry and Biochemistry, The Ohio State University Columbus Ohio 43210 USA
| | - Gaya S Dasanayake
- Department of Chemistry and Biochemistry, University of Mississippi University Oxford MS USA
| | - George Taylor
- Department of Chemistry and Biochemistry, University of Mississippi University Oxford MS USA
| | - Maryam Ghazala
- Department of Chemistry and Biochemistry, The Ohio State University Columbus Ohio 43210 USA
| | - Nathan I Hammer
- Department of Chemistry and Biochemistry, University of Mississippi University Oxford MS USA
| | - Alexander Y Sokolov
- Department of Chemistry and Biochemistry, The Ohio State University Columbus Ohio 43210 USA
| | - Nicholas C Fitzkee
- Department of Chemistry, Mississippi State University Mississippi State MS 39762 USA
| | - Eden E L Tanner
- Department of Chemistry and Biochemistry, University of Mississippi University Oxford MS USA
| | - Davita L Watkins
- Department of Chemistry and Biochemistry, The Ohio State University Columbus Ohio 43210 USA
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University 151 W Woodruff Ave. Columbus OH 43210 USA
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3
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Ma W, Wu Y, Li J, Yang M, Zhang H, Liu C, He X. A hairpin-contained i-motif guided DNA nanoantenna for sensitive and specific sensing of tumor extracellular pH gradients. Analyst 2024; 149:435-441. [PMID: 38099462 DOI: 10.1039/d3an01849k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Antenna, as a converter, could receive and convert signals from the outside world flexibly. Inspired by the behavior of antennas receiving external signals, we developed a pH-stimulated and aptamer-anchored Y-shaped DNA nanoantenna (termed pH-Apt-YNA) for sensitive and specific sensing of tumor extracellular pH gradients. The nanoantenna consisted of three functional nucleic acid sequences, an I-strand, Apt-Y-R and Y-L-G, where the I-strand endowed the DNA nanoantenna with the ability to receive and convert signals, the Apt-Y-R containing an aptamer fragment gave the DNA nanoantenna the ability to specifically anchor target tumor cells, and the complementarity of Y-L-G with the other two sequences ensured the stability of the DNA nanoantenna. Initially, the DNA nanoantenna was in a "silent" state, and rhodamine green was close to BHQ2, leading to suppressed signal emission. When the DNA nanoantenna anchored on the surface of target cancer cells through the aptamer recognition domain, the I-strand tended to fold into a hairpin-contained i-motif tetramer structure owing to the extracellular low pH stimuli, resulting in the DNA nanoantenna changing into an "active" state. In the meantime, rhodamine green moved far away from BHQ2, resulting in a strong signal output. The results demonstrate that the pH-Apt-YNA presents a sensitive pH sensing capacity within a narrow pH range of 6.2-7.4 and exhibits excellent specificity for the imaging of target cancer cell extracellular pH. Based on these advantages, we therefore anticipate that our facile design of the DNA nanoantenna with sensitive responsiveness provides a new way and great promise in the application of sensing pH-related physiological and pathological processes.
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Affiliation(s)
- Wenjie Ma
- Hunan Provincial Key Laboratory of Environmental Catalysis and Waste Recycling, College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province, Changsha 410082, China.
| | - Yuchen Wu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province, Changsha 410082, China.
| | - Jinyan Li
- Hunan Provincial Key Laboratory of Environmental Catalysis and Waste Recycling, College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
| | - Mei Yang
- Hunan Provincial Key Laboratory of Environmental Catalysis and Waste Recycling, College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
| | - He Zhang
- Hunan Provincial Key Laboratory of Environmental Catalysis and Waste Recycling, College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
| | - Chang Liu
- Hunan Provincial Key Laboratory of Environmental Catalysis and Waste Recycling, College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
| | - Xiaoxiao He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province, Changsha 410082, China.
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4
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Wu X, Shuai X, Nie K, Li J, Liu L, Wang L, Huang C, Li C. DNA-Based Fluorescent Nanoprobe for Cancer Cell Membrane Imaging. Molecules 2024; 29:267. [PMID: 38202850 PMCID: PMC10780466 DOI: 10.3390/molecules29010267] [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: 10/31/2023] [Revised: 12/21/2023] [Accepted: 01/01/2024] [Indexed: 01/12/2024] Open
Abstract
As an important barrier between the cytoplasm and the microenvironment of the cell, the cell membrane is essential for the maintenance of normal cellular physiological activities. An abnormal cell membrane is a crucial symbol of body dysfunction and the occurrence of variant diseases; therefore, the visualization and monitoring of biomolecules associated with cell membranes and disease markers are of utmost importance in revealing the biological functions of cell membranes. Due to their biocompatibility, programmability, and modifiability, DNA nanomaterials have become increasingly popular in cell fluorescence imaging in recent years. In addition, DNA nanomaterials can be combined with the cell membrane in a specific manner to enable the real-time imaging of signal molecules on the cell membrane, allowing for the real-time monitoring of disease occurrence and progression. This article examines the recent application of DNA nanomaterials for fluorescence imaging on cell membranes. First, we present the conditions for imaging DNA nanomaterials in the cell membrane microenvironment, such as the ATP, pH, etc. Second, we summarize the imaging applications of cell membrane receptors and other molecules. Finally, some difficulties and challenges associated with DNA nanomaterials in the imaging of cell membranes are presented.
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Affiliation(s)
- Xiaoqiao Wu
- Department of Basic Medicine, Shangqiu Medical College, Shangqiu 476100, China;
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China; (X.S.); (K.N.); (J.L.); (L.L.); (C.H.)
| | - Xinjia Shuai
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China; (X.S.); (K.N.); (J.L.); (L.L.); (C.H.)
| | - Kunhan Nie
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China; (X.S.); (K.N.); (J.L.); (L.L.); (C.H.)
| | - Jing Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China; (X.S.); (K.N.); (J.L.); (L.L.); (C.H.)
| | - Lin Liu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China; (X.S.); (K.N.); (J.L.); (L.L.); (C.H.)
| | - Lijuan Wang
- Department of Basic Medicine, Shangqiu Medical College, Shangqiu 476100, China;
| | - Chengzhi Huang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China; (X.S.); (K.N.); (J.L.); (L.L.); (C.H.)
| | - Chunmei Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China; (X.S.); (K.N.); (J.L.); (L.L.); (C.H.)
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5
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M M, Patidar RK, Tiwari R, Srivastava N, Ranjan N. Nile Blue: A Red-Emissive Fluorescent Dye That Displays Differential Self-Assembly and Binding to G-Quadruplexes. J Phys Chem B 2023; 127:9915-9925. [PMID: 37956021 DOI: 10.1021/acs.jpcb.3c05084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Nile Blue (NB) is a red-emissive dye that is well-known for imaging and staining applications. In this work, we describe the interaction of NB with various types of G-quadruplexes belonging to different topologies, molecularities, and conformations. Using spectroscopic techniques, we have determined the preferential binding of NB to c-Myc G-quadruplex and the other aspects of its binding. Concentration- and temperature-dependent studies showed that NB exists in a dynamic equilibrium between monomeric and H-aggregated states, which could be modulated by the addition of external agents such as anionic surfactants. NB displayed differential self-assembly with different types of G-quadruplex and duplex DNAs modulating its dynamic equilibrium between the monomeric and H-aggregated states. Fluorescence-based displacement studies revealed a 1:1 binding stoichiometry upon interaction with c-Myc G-quadruplex and an association constant of Kapp = 6.7 × 106 M-1. Circular dichroism studies indicated that NB does not cause changes in the overall conformation of either G-quadruplexes or duplexes; however, it does indicate nucleic acid-dependent self-assembly at higher concentrations. Heat capacity measurement showed a more negative change when compared to that in DNA duplex, indicating more burial of the polar surface area by NB to the G-quadruplex host.
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Affiliation(s)
- Midhun M
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research-Raebareli, New Transit Campus, Lucknow 226002, Uttar Pradesh, India
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research-Raebareli, New Transit Campus, Lucknow 226002, Uttar Pradesh, India
| | - Rajesh Kumar Patidar
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research-Raebareli, New Transit Campus, Lucknow 226002, Uttar Pradesh, India
| | - Ratnesh Tiwari
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research-Raebareli, New Transit Campus, Lucknow 226002, Uttar Pradesh, India
| | - Nidhi Srivastava
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research-Raebareli, New Transit Campus, Lucknow 226002, Uttar Pradesh, India
| | - Nihar Ranjan
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research-Raebareli, New Transit Campus, Lucknow 226002, Uttar Pradesh, India
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6
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Santhoshkumar S, Madhu M, Tseng WB, Tseng WL. Gold nanocluster-based fluorescent sensors for in vitro and in vivo ratiometric imaging of biomolecules. Phys Chem Chem Phys 2023; 25:21787-21801. [PMID: 37577965 DOI: 10.1039/d3cp02714g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Gold nanoclusters (AuNCs) are promising nanomaterials for ratiometric fluorescent probes due to their tunable fluorescence wavelengths dependent on size and structure, as well as their biocompatibility and resistance to photobleaching. By incorporating an additional fluorescence spectral peak, dual-emission AuNC-based fluorescent probes have been developed to enhance the signal output reproducibility. These probes can be fabricated by integrating various luminescent nanomaterials with AuNCs. This review focuses on the preparation methods and applications of ratiometric fluorescent probes derived from AuNCs and other fluorescent nanomaterials or fluorescent dyes for both in vitro and in vivo bioimaging of target analytes. Additionally, the review delves into the sensing mechanisms of AuNC-based ratiometric probes, their synthetic strategies, and the challenges encountered when using AuNCs for ratiometric bioimaging. Moreover, we explore the application of protein-stabilized AuNCs and thiolate-capped AuNC-based ratiometric fluorescent probes for biosensing and bioimaging. Two primary methods for assembling AuNCs and fluorophores into ratiometric fluorescent probes are discussed: triggered assembly and self-assembly. Finally, we address the challenges and issues associated with ratiometric bioimaging using AuNCs and propose future directions for further advancing AuNCs as ratiometric imaging agents.
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Affiliation(s)
- S Santhoshkumar
- Department of Chemistry, National Sun Yat-sen University, No. 70, Lien-hai Road, Gushan District, Kaohsiung 80424, Taiwan.
| | - Manivannan Madhu
- Department of Chemistry, National Sun Yat-sen University, No. 70, Lien-hai Road, Gushan District, Kaohsiung 80424, Taiwan.
| | - Wei-Bin Tseng
- Department of Chemistry, National Sun Yat-sen University, No. 70, Lien-hai Road, Gushan District, Kaohsiung 80424, Taiwan.
- Department of Environmental Engineering, Da-Yeh University, No. 168, University Rd., Dacun, Changhua 515006, Taiwan.
| | - Wei-Lung Tseng
- Department of Chemistry, National Sun Yat-sen University, No. 70, Lien-hai Road, Gushan District, Kaohsiung 80424, Taiwan.
- School of Pharmacy, Kaohsiung Medical University, No. 100, Shiquan 1st Road, Sanmin District, Kaohsiung 80708, Taiwan
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7
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Wang Z, Liu R, Fu Z, Yi X, Hu Y, Liu C, Pan D, Wu Z. A ratiometric fluorescence sensor based on gold silver nanoclusters and tungsten disulfide quantum dots with simple fabrication for the detection of copper ions in river water. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:2505-2511. [PMID: 37183758 DOI: 10.1039/d3ay00378g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Copper plays a key role in the human body; meanwhile, excess Cu2+ ions can result in various diseases. Nanoclusters (NCs) are often used to measure Cu2+ ions, but there are two difficulties. On the one hand, a single probe of NCs is easily affected by environmental factors. On the other hand, it is difficult to mask the interference of Pb2+ ions and Cd2+ ions in the process of detecting Cu2+ ions. As a new type of quantum dots (QDs), tungsten disulfide quantum dots (WS2-QDs) have some advantages of simple synthesis and stable luminescence properties. Stable WS2-QDs with blue fluorescence are used as a reference probe, while gold silver nanoclusters (AuAgNCs) with red fluorescence are used as a response probe. A ratiometric fluorescent sensor was constructed by mixing the two styles of fluorescent probes, which is abbreviated as NCs/QDs. This nano-sensor can be used to detect the concentration of Cu2+ ions, in which the fluorescence of QDs does not change significantly, while the fluorescence of NCs can be quenched by Cu2+ ions. The concentration of Cu2+ ions can be determined as low as 0.12 μM with a linear range from 0.3 to 3 μM. The common interference caused by Pb2+ and Cd2+ ions can be eliminated by the phosphate buffer solution (PBS). This sensor was used to detect the concentration of Cu2+ in river water with satisfactory results.
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Affiliation(s)
- Zhiya Wang
- Hunan Provincial Key Lab of Dark Tea and Jin-hua, College of Chemistry and Material Engineering, Hunan City University, Yiyang, 413000, P. R. China.
| | - Rong Liu
- Hunan Provincial Key Lab of Dark Tea and Jin-hua, College of Chemistry and Material Engineering, Hunan City University, Yiyang, 413000, P. R. China.
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P.R.China.
| | - Zhifang Fu
- Hunan Provincial Key Lab of Dark Tea and Jin-hua, College of Chemistry and Material Engineering, Hunan City University, Yiyang, 413000, P. R. China.
| | - Xin Yi
- Hunan Provincial Key Lab of Dark Tea and Jin-hua, College of Chemistry and Material Engineering, Hunan City University, Yiyang, 413000, P. R. China.
| | - Yongjun Hu
- Hunan Provincial Key Lab of Dark Tea and Jin-hua, College of Chemistry and Material Engineering, Hunan City University, Yiyang, 413000, P. R. China.
| | - Changhui Liu
- Hunan Provincial Key Lab of Dark Tea and Jin-hua, College of Chemistry and Material Engineering, Hunan City University, Yiyang, 413000, P. R. China.
| | - Dong Pan
- Zhejiang Addenda Advance Energy Material Co. Ltd, Huzhou 313000, P. R. China
| | - Zhaoyang Wu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P.R.China.
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Li Y, Chen Q, Pan X, Lu W, Zhang J. New insight into the application of fluorescence platforms in tumor diagnosis: From chemical basis to clinical application. Med Res Rev 2022; 43:570-613. [PMID: 36420715 DOI: 10.1002/med.21932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 09/22/2022] [Accepted: 11/04/2022] [Indexed: 11/27/2022]
Abstract
Early and rapid diagnosis of tumors is essential for clinical treatment or management. In contrast to conventional means, bioimaging has the potential to accurately locate and diagnose tumors at an early stage. Fluorescent probe has been developed as an ideal tool to visualize tumor sites and to detect biological molecules which provides a requirement for noninvasive, real-time, precise, and specific visualization of structures and complex biochemical processes in vivo. Rencently, the development of synthetic organic chemistry and new materials have facilitated the development of near-infrared small molecular sensing platforms and nanoimaging platforms. This provides a competitive tool for various fields of bioimaging such as biological structure and function imaging, disease diagnosis, in situ at the in vivo level, and real-time dynamic imaging. This review systematically focused on the recent progress of small molecular near-infrared fluorescent probes and nano-fluorescent probes as new biomedical imaging tools in the past 3-5 years, and it covers the application of tumor biomarker sensing, tumor microenvironment imaging, and tumor vascular imaging, intraoperative guidance and as an integrated platform for diagnosis, aiming to provide guidance for researchers to design and develop future biomedical diagnostic tools.
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Affiliation(s)
- Yanchen Li
- Department of Medicinal Chemistry, School of Pharmacy, Health Science Center Xi'an Jiaotong University Xi'an China
| | - Qinhua Chen
- Department of Pharmacy Shenzhen Baoan Authentic TCM Therapy Hospital Shenzhen China
| | - Xiaoyan Pan
- Department of Medicinal Chemistry, School of Pharmacy, Health Science Center Xi'an Jiaotong University Xi'an China
| | - Wen Lu
- Department of Medicinal Chemistry, School of Pharmacy, Health Science Center Xi'an Jiaotong University Xi'an China
| | - Jie Zhang
- Department of Medicinal Chemistry, School of Pharmacy, Health Science Center Xi'an Jiaotong University Xi'an China
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9
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Rizzo R, Onesto V, Forciniti S, Chandra A, Prasad S, Iuele H, Colella F, Gigli G, Del Mercato LL. A pH-sensor scaffold for mapping spatiotemporal gradients in three-dimensional in vitro tumour models. Biosens Bioelectron 2022; 212:114401. [PMID: 35617754 DOI: 10.1016/j.bios.2022.114401] [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: 03/11/2022] [Revised: 05/13/2022] [Accepted: 05/16/2022] [Indexed: 11/28/2022]
Abstract
The detection of extracellular pH at single cell resolution is challenging and requires advanced sensibility. Sensing pH at high spatial and temporal resolution might provide crucial information in understanding the role of pH and its fluctuations in a wide range of physio-pathological cellular processes, including cancer. Here, a method to embed silica-based fluorescent pH sensors into alginate-based three-dimensional (3D) microgels tumour models, coupled with a computational method for fine data analysis, is presented. By means of confocal laser scanning microscopy, live-cell time-lapse imaging of 3D alginate microgels was performed and the extracellular pH metabolic variations were monitored in both in vitro 3D mono- and 3D co-cultures of tumour and stromal pancreatic cells. The results show that the extracellular pH is cell line-specific and time-dependent. Moreover, differences in pH were also detected between 3D monocultures versus 3D co-cultures, thus suggesting the existence of a metabolic crosstalk between tumour and stromal cells. In conclusion, the system has the potential to image multiple live cell types in a 3D environment and to decipher in real-time their pH metabolic interplay under controlled experimental conditions, thus being also a suitable platform for drug screening and personalized medicine.
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Affiliation(s)
- Riccardo Rizzo
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), c/o Campus Ecotekne, via Monteroni, 73100, Lecce, Italy.
| | - Valentina Onesto
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), c/o Campus Ecotekne, via Monteroni, 73100, Lecce, Italy
| | - Stefania Forciniti
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), c/o Campus Ecotekne, via Monteroni, 73100, Lecce, Italy
| | - Anil Chandra
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), c/o Campus Ecotekne, via Monteroni, 73100, Lecce, Italy
| | - Saumya Prasad
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), c/o Campus Ecotekne, via Monteroni, 73100, Lecce, Italy
| | - Helena Iuele
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), c/o Campus Ecotekne, via Monteroni, 73100, Lecce, Italy
| | - Francesco Colella
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), c/o Campus Ecotekne, via Monteroni, 73100, Lecce, Italy
| | - Giuseppe Gigli
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), c/o Campus Ecotekne, via Monteroni, 73100, Lecce, Italy; Department of Mathematics and Physics ''Ennio De Giorgi", University of Salento, via Arnesano, 73100, Lecce, Italy
| | - Loretta L Del Mercato
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), c/o Campus Ecotekne, via Monteroni, 73100, Lecce, Italy.
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10
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Michelis S, Danglot L, Vauchelles R, Klymchenko AS, Collot M. Imaging and Measuring Vesicular Acidification with a Plasma Membrane-Targeted Ratiometric pH Probe. Anal Chem 2022; 94:5996-6003. [PMID: 35377610 DOI: 10.1021/acs.analchem.2c00574] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Tracking the pH variation of intracellular vesicles throughout the endocytosis pathway is of prior importance to better assess the cell trafficking and metabolism of cells. Small molecular fluorescent pH probes are valuable tools in bioimaging but are generally not targeted to intracellular vesicles or are directly targeted to acidic lysosomes, thus not allowing the dynamic observation of the vesicular acidification. Herein, we designed Mem-pH, a fluorogenic ratiometric pH probe based on chromenoquinoline with appealing photophysical properties, which targets the plasma membrane (PM) of cells and further accumulates in the intracellular vesicles by endocytosis. The exposition of Mem-pH toward the vesicle's lumen allowed to monitor the acidification of the vesicles throughout the endocytic pathway and enabled the measurement of their pH via ratiometric imaging.
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Affiliation(s)
- Sophie Michelis
- Laboratoire de Bioimagerie et Pathologies, UMR 7021, CNRS/Université de Strasbourg, 74 route du Rhin, 67401 Illkirch-Graffenstaden, France
| | - Lydia Danglot
- Université de Paris, Institute of Psychiatry and Neuroscience of Paris, INSERM U1266, Membrane Traffic in Healthy & Diseased Brain, 75014 Paris, France
| | - Romain Vauchelles
- Laboratoire de Bioimagerie et Pathologies, UMR 7021, CNRS/Université de Strasbourg, 74 route du Rhin, 67401 Illkirch-Graffenstaden, France
| | - Andrey S Klymchenko
- Laboratoire de Bioimagerie et Pathologies, UMR 7021, CNRS/Université de Strasbourg, 74 route du Rhin, 67401 Illkirch-Graffenstaden, France
| | - Mayeul Collot
- Laboratoire de Bioimagerie et Pathologies, UMR 7021, CNRS/Université de Strasbourg, 74 route du Rhin, 67401 Illkirch-Graffenstaden, France
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11
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Zeng G, Liang Z, Jiang X, Quan T, Chen T. An ESIPT-Dependent AIE Fluorophore Based on HBT Derivative: Substituent Positional Impact on Aggregated Luminescence and its Application for Hydrogen Peroxide Detection. Chemistry 2021; 28:e202103241. [PMID: 34816504 DOI: 10.1002/chem.202103241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Indexed: 11/10/2022]
Abstract
Aiming to develop the facile organic fluorophore possessing excited state intramolecular proton transfer (ESIPT) and aggregation-induced emission (AIE), we designed and synthesized two isomers with different linkage site between hydroxyl of 2-(2-hydroxyphenyl) benzothiazole (HBT) and a benzothiazole substituent (para position refers to p-BHBT and ortho position refers to o-BHBT). Fluorescence emission properties of p-BHBT and o-BHBT in THF/water mixtures with different water volume fractions indicated an opposite luminescence in aggregates, in which p-BHBT showed an ESIPT-dependent AIE properties while o-BHBT displayed ESIPT effect and aggregation-caused quenching (ACQ) qualities. A possible mechanism for molecular actions to illustrate the aggregating luminescence alteration of these two isomers had been proposed and verified by theoretical and experimental studies. More importantly, Probe-1, generated from dual ESIPT-AIE fluorophore p-BHBT, was successfully used as a ratiometric fluorescent chemosensor for highly selective (above 15-fold over other ROS) and sensitive (69-fold fluorescence enhancement with 0.22 μM of detection limit) detection of hydrogen peroxide in aqueous solution and living cells, respectively.
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Affiliation(s)
- Guanling Zeng
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, 510631, P. R. China.,Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, 510631, P. R. China
| | - Zhenhao Liang
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, 510631, P. R. China.,Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, 510631, P. R. China
| | - Xiao Jiang
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, 510631, P. R. China.,Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, 510631, P. R. China
| | - Tingting Quan
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, 510631, P. R. China.,Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, 510631, P. R. China
| | - Tongsheng Chen
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, 510631, P. R. China.,Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, 510631, P. R. China.,SCNU Qingyuan Institute of Science and Technology Innovation Co., Ltd., Qingyuan, 511517, P. R. China
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12
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Skinner WH, Chung M, Mitchell S, Akidil A, Fabre K, Goodwin R, Stokes AA, Radacsi N, Campbell CJ. A SERS-Active Electrospun Polymer Mesh for Spatially Localized pH Measurements of the Cellular Microenvironment. Anal Chem 2021; 93:13844-13851. [PMID: 34609126 DOI: 10.1021/acs.analchem.1c02530] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Extracellular pH (pHe) is an important chemical factor in many cellular processes and disease pathologies. The routine sampling of pHe in vitro could lead to innovative advances in therapeutics. To this end, we have fabricated a novel gold-coated polymer mesh, which facilitates the real-time measurement of pHe via surface-enhanced Raman scattering (SERS). In this proof of concept study, we apply our SERS sensor to measure metabolically induced changes in the pHe of carcinoma-derived cell line HepG2/C3A. We demonstrate that gold-coated polyurethane electrospun nanofibers (AuNF) have strong and reproducible SERS spectra of surface-adsorbed analytes. By functionalizing AuNF with pH-responsive reporter 4-mercaptobenzoic acid (MBA), we have developed an accurate pH SERS sensor for the extracellular microenvironment. We cultured HepG2/C3A on the surface of MBA-AuNF and measured an acidic shift in pHe at the cell-fiber interface. Following exposure to staurosporine, an apoptosis-inducing drug, we observed changes in the HepG2/C3A cellular morphology indicative of controlled cell death, and detected an increase in the pHe of HepG2/C3A. These results demonstrate how subtle changes in pHe, induced by the metabolic activity of cells, can be measured with our novel SERS sensor MBA-AuNF. The excellent pH measurement performance of MBA-AuNF provides a unique platform to study extracellular pH on the microscale and will help to deepen our understanding of pHe in disease pathology.
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Affiliation(s)
- William H Skinner
- EaStCHEM School of Chemistry, University of Edinburgh, The University of Edinburgh, King's Buildings, Mayfield Road, Edinburgh EH9 3FJ, United Kingdom
| | - Michael Chung
- School of Engineering, The University of Edinburgh, King's Buildings, Mayfield Road, Edinburgh EH9 3JL, United Kingdom
| | - Stephen Mitchell
- School of Biological Sciences, The University of Edinburgh, Edinburgh EH9 3BF, United Kingdom
| | - Asli Akidil
- Clinical Pharmacology and Safety Sciences, Biopharmaceuticals R&D, AstraZeneca, Cambridge, CB4 0WG, United Kingdom
| | - Kristin Fabre
- Innovation Scientist, Baylor College of Medicine, Centre for Space Medicine, Houston, Texas 77030, United States
| | - Richard Goodwin
- Clinical Pharmacology and Safety Sciences, Biopharmaceuticals R&D, AstraZeneca, Cambridge, CB4 0WG, United Kingdom
| | - Adam A Stokes
- School of Engineering, The University of Edinburgh, King's Buildings, Mayfield Road, Edinburgh EH9 3JL, United Kingdom
| | - Norbert Radacsi
- School of Engineering, The University of Edinburgh, King's Buildings, Mayfield Road, Edinburgh EH9 3JL, United Kingdom
| | - Colin J Campbell
- EaStCHEM School of Chemistry, University of Edinburgh, The University of Edinburgh, King's Buildings, Mayfield Road, Edinburgh EH9 3FJ, United Kingdom
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13
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Podder A, Joseph MM, Biswas S, Samanta S, Maiti KK, Bhuniya S. Amphiphilic fluorescent probe self-encored in plasma to detect pH fluctuations in cancer cell membranes. Chem Commun (Camb) 2021; 57:607-610. [PMID: 33346278 DOI: 10.1039/d0cc06694j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have developed an amphiphilic pH probe (P1CS) to detect pH levels in the plasma membrane in cancer cells. An elevated fluorescence signal at 550 nm at the cell surface of cancer cells (MDA-MB-231, HeLa cells) prompted the application of P1CS as a pH marker for the cancer cell surface, discriminating it from normal cells (WI-38). Moreover, the probe enables labeling of the surface of multilayered tumor spheroids, which promotes its use as a marker for the surface of tumor tissue.
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Affiliation(s)
- Arup Podder
- Amrita Centre for Industrial Research and Innovation, Amrita School of engineering, Coimbatore, Amrita Vishwa Vidyapeetham 641-112, India.
| | - Manu M Joseph
- Chemical Sciences & Technology Division, CSIR-National Institute for Interdisciplinary Science & Technology (CSIR-NIIST), Industrial Estate, Pappanamcode, Thiruvananthapuram, Kerala 695019, India.
| | - Shayeri Biswas
- Centre for Interdisciplinary Science, JIS Institute of Advanced Studies and Research, JIS University, Kolkata, 700091, India. spbhuniya@jisiasr@org
| | - Sanjib Samanta
- Centre for Interdisciplinary Science, JIS Institute of Advanced Studies and Research, JIS University, Kolkata, 700091, India. spbhuniya@jisiasr@org
| | - Kaustabh K Maiti
- Chemical Sciences & Technology Division, CSIR-National Institute for Interdisciplinary Science & Technology (CSIR-NIIST), Industrial Estate, Pappanamcode, Thiruvananthapuram, Kerala 695019, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sankarprasad Bhuniya
- Centre for Interdisciplinary Science, JIS Institute of Advanced Studies and Research, JIS University, Kolkata, 700091, India. spbhuniya@jisiasr@org
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14
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Dual-dye systems comprising activatable fluorescein dye and hydrophobic or hydrophilic Cy5 reference fluorophore for ratiometric drug delivery monitoring. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.113113] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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15
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Le Guern F, Mussard V, Gaucher A, Rottman M, Prim D. Fluorescein Derivatives as Fluorescent Probes for pH Monitoring along Recent Biological Applications. Int J Mol Sci 2020; 21:E9217. [PMID: 33287208 PMCID: PMC7729466 DOI: 10.3390/ijms21239217] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 11/24/2020] [Accepted: 12/01/2020] [Indexed: 12/19/2022] Open
Abstract
Potential of hydrogen (pH) is one of the most relevant parameters characterizing aqueous solutions. In biology, pH is intrinsically linked to cellular life since all metabolic pathways are implicated into ionic flows. In that way, determination of local pH offers a unique and major opportunity to increase our understanding of biological systems. Whereas the most common technique to obtain these data in analytical chemistry is to directly measure potential between two electrodes, in biological systems, this information has to be recovered in-situ without any physical interaction. Based on their non-invasive optical properties, fluorescent pH-sensitive probe are pertinent tools to develop. One of the most notorious pH-sensitive probes is fluorescein. In addition to excellent photophysical properties, this fluorophore presents a pH-sensitivity around neutral and physiologic domains. This review intends to shed new light on the recent use of fluorescein as pH-sensitive probes for biological applications, including targeted probes for specific imaging, flexible monitoring of bacterial growth, and biomedical applications.
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Affiliation(s)
- Florent Le Guern
- Institut Lavoisier de Versailles, CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France; (V.M.); (A.G.); (D.P.)
| | - Vanessa Mussard
- Institut Lavoisier de Versailles, CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France; (V.M.); (A.G.); (D.P.)
| | - Anne Gaucher
- Institut Lavoisier de Versailles, CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France; (V.M.); (A.G.); (D.P.)
| | - Martin Rottman
- Faculté de Médecine Simone Veil, Université de Versailles St Quentin, INSERM UMR U1173, 2 Avenue de la Source de la Bièvre, 78180 Montigny le Bretonneux, France;
- Hôpital Raymond Poincaré, AP-HP, GHU Paris Saclay, 104 Bd Poincaré, 92380 Garches, France
| | - Damien Prim
- Institut Lavoisier de Versailles, CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France; (V.M.); (A.G.); (D.P.)
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16
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Liu C, Gao X, Yuan J, Zhang R. Advances in the development of fluorescence probes for cell plasma membrane imaging. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.116092] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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17
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Chen Y. Recent advances in fluorescent probes for extracellular pH detection and imaging. Anal Biochem 2020; 612:113900. [PMID: 32926864 DOI: 10.1016/j.ab.2020.113900] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 08/02/2020] [Indexed: 12/12/2022]
Abstract
Extracellular pH plays vital roles in physiological and pathological processes including tumor metastasis and chemotherapy resistance. Abnormal extracellular pH is known to be associated with various pathological states, such as those in tumors, ischemic stroke, infection, and inflammation. Specifically, dysregulated pH is regarded as a hallmark of cancer because enhanced glycolysis and poor perfusion in most solid malignant tumors create an acidic extracellular environment, which enhances tumor growth, invasion, and metastasis. Close connection between the cell functions with extracellular pH means that precise and real-time measurement of the dynamic change of extracellular pH can provide critical information for not only studying physiological and pathological processes but also diagnosis of cancer and other diseases. This review highlights the recent development of based fluorescent probes for extracellular pH measurement, including design strategies, reaction mechanism and applications for the detection and imaging of extracellular pH.
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Affiliation(s)
- Yi Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100190, China.
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18
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Song S, Zhao Y, Li Y, Yang X, Wang D, Wen Z, Yang M, Lin Q. pH-responsive copper-cluster-based dual-emission ratiometric fluorescent probe for imaging of bacterial metabolism. Talanta 2020; 221:121621. [PMID: 33076149 DOI: 10.1016/j.talanta.2020.121621] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 08/25/2020] [Accepted: 09/01/2020] [Indexed: 11/17/2022]
Abstract
The profiling of bacterial metabolism is of great significance in practical applications. Therefore, the development of ultrasensitive and highly selective probe for bacterial metabolism detection and imaging is extremely desirable. Herein, a novel dual-emission pH-response bacterial metabolism detection and imaging probe is successfully developed. This probe consists of large-sized and easily separated SiO2 microspheres, copper nanoclusters (Cu NCs) with red emission, and carbon dots (CDs) with blue emission through in-situ self-assembly. In this system, the fluorescence of Cu NCs is sensitive to pH change due to their obvious aggregation-induced emission enhancement (AIEE) property, while the blue fluorescence of CDs remained almost stable. Therefore, red fluorescence and blue fluorescence are compounded with different fluorescence intensity at different pH values, and their fluorescence ratio is also different. By observation of composite fluorescence color, the visual colorimetric pH detection can be realized with the change of pH value of 0.2 units. Utilizing this system, we are able to detect bacterial metabolism with high signal-to-noise ratio, and it can also be used for bacterial metabolic imaging. Therefore, the pH-responsive Cu NCs-based dual-emission ratiometric fluorescent probe we constructed can provide new ideas for bacterial detection, antimicrobial sterilization, and biological imaging.
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Affiliation(s)
- Shanliang Song
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry, Jilin University Changchun, 130012, PR China; College of Physics and Optoelectronic Engineering, Centre for AIE Research, School of Material Science and Engineering, Shenzhen University, Shenzhen, 518061, PR China
| | - Yue Zhao
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry, Jilin University Changchun, 130012, PR China
| | - Yang Li
- Center for Reproductive Medicine, Center for Prenatal Diagnosis, First Hospital, Jilin University, Changchun, 130021, Jilin, PR China
| | - Xudong Yang
- School of Chemical Engineering, Advanced Institute of Materials Science, Changchun University of Technology, Changchun, 130012, PR China.
| | - Dong Wang
- College of Physics and Optoelectronic Engineering, Centre for AIE Research, School of Material Science and Engineering, Shenzhen University, Shenzhen, 518061, PR China.
| | - Zhuoqi Wen
- Institute of New Energy Technology, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences, Ningbo, 315201, PR China
| | - Minghui Yang
- Institute of New Energy Technology, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences, Ningbo, 315201, PR China.
| | - Quan Lin
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry, Jilin University Changchun, 130012, PR China.
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19
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Kim SY, Podder A, Lee H, Cho YJ, Han EH, Khatun S, Sessler JL, Hong KS, Bhuniya S. Self-assembled amphiphilic fluorescent probe: detecting pH-fluctuations within cancer cells and tumour tissues. Chem Sci 2020; 11:9875-9883. [PMID: 34094247 PMCID: PMC8162098 DOI: 10.1039/d0sc03795h] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 08/28/2020] [Indexed: 12/26/2022] Open
Abstract
Abnormal anaerobic metabolism leads to a lowering of the pH of many tumours, both within specific intracellular organelles and in the surrounding extracellular regions. Information relating to pH-fluctuations in cells and tissues could aid in the identification of neoplastic lesions and in understanding the determinants of carcinogenesis. Here we report an amphiphilic fluorescent pH probe (CS-1) that, as a result of its temporal motion, provides pH-related information in cancer cell membranes and selected intracellular organelles without the need for specific tumour targeting. Time-dependent cell imaging studies reveal that CS-1 localizes within the cancer cell-membrane about 20 min post-incubation. This is followed by migration to the lysosomes at 30 min before being taken up in the mitochondria after about 60 min. Probe CS-1 can selectively label cancer cells and 3D cancer spheroids and be readily observed using the green fluorescence channel (λ em = 532 nm). In contrast, CS-1 only labels normal cells marginally, with relatively low Pearson's correlation coefficients being found when co-incubated with standard intracellular organelle probes. Both in vivo and ex vivo experiments provide support for the suggestion that CS-1 acts as a fluorescent label for the periphery of tumours, an effect ascribed to proton-induced aggregation. A much lower response is seen for muscle and liver. Based on the present results, we propose that sensors such as CS-1 may have a role to play in the clinical and pathological detection of tumour tissues or serve as guiding aids for surgery.
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Affiliation(s)
- Soo Yeon Kim
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute Cheongju 28119 Korea
| | - Arup Podder
- Amrita Centre for Industrial Research & Innovation, Amrita Vishwa Vidyapeetham Ettimadai Coimbatore 641-112 India
| | - Hyunseung Lee
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute Cheongju 28119 Korea
| | - Youn-Joo Cho
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute Cheongju 28119 Korea
- Graduate School of Analytical Science and Technology, Chungnam National University Daejeon 34134 Korea
| | - Eun Hee Han
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute Cheongju 28119 Korea
| | - Sabina Khatun
- Amrita Centre for Industrial Research & Innovation, Amrita Vishwa Vidyapeetham Ettimadai Coimbatore 641-112 India
| | - Jonathan L Sessler
- Department of Chemistry, The University of Texas at Austin Austin Texas 78712-1224 USA
| | - Kwan Soo Hong
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute Cheongju 28119 Korea
- Graduate School of Analytical Science and Technology, Chungnam National University Daejeon 34134 Korea
| | - Sankarprasad Bhuniya
- Amrita Centre for Industrial Research & Innovation, Amrita Vishwa Vidyapeetham Ettimadai Coimbatore 641-112 India
- Centre for Interdisciplinary Science, JIS Institute of Advanced Studies and Research, JIS University Kolkata 700-091 India
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20
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Husain A, Ganesan A, Machacek M, Cerveny L, Kubat P, Ghazal B, Zimcik P, Makhseed S. Dually directional glycosylated phthalocyanines as extracellular red-emitting fluorescent probes. Dalton Trans 2020; 49:9605-9617. [PMID: 32542251 DOI: 10.1039/d0dt01180k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The development of new non-aggregated phthalocyanines bearing multivalent saccharide moieties on their macrocyclic rims is of great interest. Many characteristics, including water-solubility, non-toxicity and others, can be feasibly obtained by these amphiphiles which can be considered as a key solution for demonstrating highly efficient photoactive materials in water. Herein, a family of five newly prepared dually directional Zn(ii) containing phthalocyanines (PcG1-4) and azaphthalocyanine (AzaPcG1) glycoconjugates is described. The unique spatial arrangement of the glucoside units based on peripherally hexadeca-(PcG1) and nonperipherally octa-(PcG4) macrocycles provides a fully monomeric behaviour along with a high fluorescence (ΦF∼ 0.21) in aqueous solution. These amphiphiles were characterized by low toxicity, and an extremely low cellular uptake was obtained due to the highly polar nature of the glucoside substituents. Accordingly, their potential as suitable photoactive chromophores for red-emitting extracellular fluorescent probes has been confirmed upon the evaluation of paracellular transport using a layer of MDCKII cells with the permeability coefficient fully comparable with an established evaluator of the integrity of the monolayer.
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Affiliation(s)
- Ali Husain
- Department of Chemistry, Kuwait University, P.O. Box 5969, Safat, 13060, Kuwait.
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21
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Kuo JCH, Goudge MC, Metzloff AE, Huang LT, Colville MJ, Park S, Zipfel WR, Paszek MJ. Litmus-Body: A Molecularly Targeted Sensor for Cell-Surface pH Measurements. ACS Sens 2020; 5:1555-1566. [PMID: 32337979 DOI: 10.1021/acssensors.9b02080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Precise pH measurements in the immediate environment of receptors is essential for elucidating the mechanisms through which local pH changes associated with diseased phenotypes manifest into aberrant receptor function. However, current pH sensors lack the ability to localize and target specific receptor molecules required to make these measurements. Herein we present the Litmus-body, our recombinant protein-based pH sensor, which through fusion to an anti-IgG nanobody is capable of piggybacking on IgG antibodies for molecular targeting to specific proteins on the cell surface. By normalizing a pH-dependent green fluorescent protein to a long Stokes shift red fluorophore or fluorescent protein, we readily report pH independent of sensor concentration using a single 488 nm excitation. Our Litmus-body showed excellent responsiveness in solution, with a greater than 50-fold change across the regime of physiological pH. The sensor was further validated for use on live cells and shown to be specific to the protein of interest. In complex with our Litmus-body, cetuximab therapeutic antibody retained its functionality in binding and inhibiting ligand interaction of its target epidermal growth factor receptor (EGFR), triggering receptor-mediated endocytosis that allowed tracking of local pH from the cell surface through the endocytic pathway.
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Affiliation(s)
- Joe Chin-Hun Kuo
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Marc C. Goudge
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Ann E. Metzloff
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Ling-Ting Huang
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
| | | | - Sangwoo Park
- Field of Biophysics, Cornell University, Ithaca, New York 14853, United States
| | - Warren R. Zipfel
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
- Field of Biophysics, Cornell University, Ithaca, New York 14853, United States
- Kavli Institute at Cornell for Nanoscale Science, Ithaca, New York 14853, United States
| | - Matthew J. Paszek
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
- Field of Biophysics, Cornell University, Ithaca, New York 14853, United States
- Kavli Institute at Cornell for Nanoscale Science, Ithaca, New York 14853, United States
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22
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FITC-Labeled Alendronate as an In Vivo Bone pH Sensor. BIOMED RESEARCH INTERNATIONAL 2020; 2020:4012194. [PMID: 32550231 PMCID: PMC7256770 DOI: 10.1155/2020/4012194] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 03/05/2020] [Accepted: 04/06/2020] [Indexed: 11/20/2022]
Abstract
pH is a critical indicator of bone physiological function and disease status; however, noninvasive and real-time sensing of bone pH in vivo has been a challenge. Here, we synthesized a bone pH sensor by labeling alendronate with the H+-sensitive dye fluorescein isothiocyanate (Aln-FITC). Aln-FITC showed selective affinity for hydroxyapatite (HAp) rather than other calcium materials. An in vivo biodistribution study showed that Aln-FITC can be rapidly and specifically delivered to rat bones after caudal vein injection, and the fluorescence lasted for at least 12 h. The fluorescence intensity of Aln-FITC binding to HAp linearly decreased when the pH changed from 6 to 12. This finding was further confirmed on bone blocks and perfused bone when the pH changed from 6.8 to 7.4, indicating unique pH-responsive characteristics in the bone microenvironment. Aln-FITC was then preliminarily applied to evaluate the changes in bone pH in a nude mouse acidosis model. Our results demonstrated that Aln-FITC might have the potential for minimally invasive and real-time in vivo bone pH sensing in preclinical studies of bone healing, metabolism, and cancer mechanisms.
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23
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Chen C, Hildebrandt N. Resonance energy transfer to gold nanoparticles: NSET defeats FRET. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2019.115748] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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24
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Yang Y, Xia M, Zhang S, Zhang X. Cell-penetrating peptide-modified quantum dots as a ratiometric nanobiosensor for the simultaneous sensing and imaging of lysosomes and extracellular pH. Chem Commun (Camb) 2020; 56:145-148. [DOI: 10.1039/c9cc07596h] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A ratiometric QD-peptide nanobiosensor is developed for the simultaneous sensing and imaging of lysosomes and extracellular pH.
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Affiliation(s)
- Yan Yang
- Department of Chemistry
- Tsinghua University
- Beijing
- China
| | - Mengchan Xia
- Department of Chemistry
- Tsinghua University
- Beijing
- China
| | - Sichun Zhang
- Department of Chemistry
- Tsinghua University
- Beijing
- China
| | - Xinrong Zhang
- Department of Chemistry
- Tsinghua University
- Beijing
- China
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25
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Zhang E, Wang S, Su X, Han S. Imaging stressed organellesviasugar-conjugated color-switchable pH sensors. Analyst 2020; 145:1319-1327. [DOI: 10.1039/c9an02441g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Sugar-conjugated pH sensors discriminate stressed lysosomes in different cell starvation conditionsviared-to-green fluorescence switch.
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Affiliation(s)
- Enkang Zhang
- Department of Chemical Biology
- College of Chemistry and Chemical Engineering
- State Key Laboratory for Physical Chemistry of Solid Surfaces
- the Key Laboratory for Chemical Biology of Fujian Province
- The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation
| | - Siyu Wang
- Department of Chemical Biology
- College of Chemistry and Chemical Engineering
- State Key Laboratory for Physical Chemistry of Solid Surfaces
- the Key Laboratory for Chemical Biology of Fujian Province
- The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation
| | - Xinhui Su
- Department of Nuclear Medicine
- Zhongshan Hospital of Xiamen University
- Xiamen
- China
| | - Shoufa Han
- Department of Chemical Biology
- College of Chemistry and Chemical Engineering
- State Key Laboratory for Physical Chemistry of Solid Surfaces
- the Key Laboratory for Chemical Biology of Fujian Province
- The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation
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26
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Affiliation(s)
- Leonid Patsenker
- Department of Natural SciencesAriel University Ariel 40700 Israel
| | - Gary Gellerman
- Department of Natural SciencesAriel University Ariel 40700 Israel
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27
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Ge S, Zhao J, Ma G. Thiol stabilized extremely small gold cluster complexes with high photoluminescence. INORG CHEM COMMUN 2019. [DOI: 10.1016/j.inoche.2019.107556] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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28
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Ratiometric fluorescence system for pH sensing and urea detection based on MoS2 quantum dots and 2, 3-diaminophenazine. Anal Chim Acta 2019; 1077:200-207. [DOI: 10.1016/j.aca.2019.06.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 05/05/2019] [Accepted: 06/01/2019] [Indexed: 01/07/2023]
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29
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Li Z, Yu C, Chen Y, Zhuang Z, Tian B, Liu C, Jia P, Zhu H, Sheng W, Zhu B. A novel water-soluble fluorescent probe with ultra-sensitivity over a wider pH range and its application for differentiating cancer cells from normal cells. Analyst 2019; 144:6975-6980. [DOI: 10.1039/c9an01504c] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A water-soluble fluorescent probe with ultra-sensitivity over a wider pH range was developed to differentiate cancer cells from normal cells.
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30
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Rozovsky A, Ebaston TM, Zaporozhets A, Bazylevich A, Tuchinsky H, Patsenker L, Gellerman G. Theranostic system for ratiometric fluorescence monitoring of peptide-guided targeted drug delivery. RSC Adv 2019; 9:32656-32664. [PMID: 35529716 PMCID: PMC9073098 DOI: 10.1039/c9ra06334j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 10/04/2019] [Indexed: 11/21/2022] Open
Abstract
Novel theranostic system that first combines a cancer-targeting peptide with a long-wavelength dual fluorescent dye IRD in order to provide ratiometric monitoring of anticancer drug delivery is developed and evaluated in pancreatic cancer cell line.
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Affiliation(s)
- Alex Rozovsky
- Department of Chemical Sciences
- Ariel University
- Ariel 40700
- Israel
| | - T. M. Ebaston
- Department of Chemical Sciences
- Ariel University
- Ariel 40700
- Israel
| | | | | | - Helena Tuchinsky
- Department of Molecular Biology
- Ariel University
- Ariel 40700
- Israel
| | - Leonid Patsenker
- Department of Chemical Sciences
- Ariel University
- Ariel 40700
- Israel
| | - Gary Gellerman
- Department of Chemical Sciences
- Ariel University
- Ariel 40700
- Israel
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