1
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Gui R, Jin H. Organic fluorophores-based molecular probes with dual-fluorescence ratiometric responses to in-vitro/in-vivo pH for biosensing, bioimaging and biotherapeutics applications. Talanta 2024; 275:126171. [PMID: 38703479 DOI: 10.1016/j.talanta.2024.126171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 04/19/2024] [Accepted: 04/25/2024] [Indexed: 05/06/2024]
Abstract
In recent years, organic fluorophores-based molecular probes with dual-fluorescence ratiometric responses to in-vitro/in-vivo pH (DFR-MPs-pH) have been attracting much interest in fundamental application research fields. More and more scientific publications have reported the exploration of various DFR-MPs-pH systems that have unique dual-fluorescence ratiometry as the signal output, in-built and signal self-calibration functions to improve precise detection of targets. DFR-MPs-pH systems possess high-performance applications in biosensing, bioimaging and biomedicine fields. This review has comprehensively summarized recent advances of DFR-MPs-pH for the first time. First of all, the compositions and types of DFR-MPs-pH are introduced by summarizing different organic fluorophores-based molecule systems. Then, construction strategies are analyzed based on specific components, structures, properties and functions of DFR-MPs-pH. Afterward, biosensing and bioimaging applications are discussed in detail, primarily referring to pH sensing and imaging detection at the levels of living cells and small animals. Finally, biomedicine applications are fully summarized, majorly involving bio-toxicity evaluation, bio-distribution, biomedical diagnosis and therapeutics. Meanwhile, the current status, challenges and perspectives are rationally commented after detailed discussions of representative and state-of-the-art studies. Overall, this present review is comprehensive, in-time and in-depth, and can facilitate the following further exploration of new and versatile DFR-MPs-pH systems toward rational design, facile preparation, superior properties, adjustable functions and highly efficient applications in promising fields.
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Affiliation(s)
- Rijun Gui
- College of Chemistry and Chemical Engineering, Intellectual Property Research Institute, Qingdao University, Shandong, 266071, PR China.
| | - Hui Jin
- College of Chemistry and Chemical Engineering, Intellectual Property Research Institute, Qingdao University, Shandong, 266071, PR China
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2
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Zhao B, Kamanzi A, Zhang Y, Chan KYT, Robertson M, Leslie S, Cullis PR. Determination of the interior pH of lipid nanoparticles using a pH-sensitive fluorescent dye-based DNA probe. Biosens Bioelectron 2024; 251:116065. [PMID: 38330772 DOI: 10.1016/j.bios.2024.116065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/15/2024] [Accepted: 01/22/2024] [Indexed: 02/10/2024]
Abstract
Lipid nanoparticles (LNPs) containing ionizable cationic lipids are proven delivery systems for therapeutic nucleic acids, such as small interfering RNA (siRNA). It is important to understand the relationship between the interior pH of LNPs and the pH of the external environment to understand LNP formulation and function. Here, we developed a simple and rapid approach for determining the pH of the LNP core using a pH-sensitive fluorescent dye-based DNA probe. LNP siRNA systems containing pH-responsive DNA probes (LNP-siRNA&DNA) were generated by rapid mixing of lipids in ethanol and pH 4 aqueous buffer containing siRNA and DNA probes. We demonstrated that DNA probes were readily encapsulated in LNP systems and were sequestered into an environment at a high concentration as evidenced by an inter-probe FRET signal. It was shown that the pH of LNP encapsulated probes closely follows the pH increase or decrease of the external environment. This indicates that the clinically approved LNP RNA systems with similar lipid compositions (e.g., Onpattro and Comirnaty) are highly permeable to protons and that the pH of the interior environment closely mirrors the external environment. The pH-dependent response of the probe in LNPs was also confirmed under buffer conditions at various pHs. Furthermore, we showed that the pH-sensitive DNA probe can be incorporated into LNP systems at levels that allow the pH response to be monitored at a single LNP level using convex lens-induced confinement (CLiC) confocal microscopy. Direct visualization of the internal pH of single particles with the fluorescent DNA probe was achieved by CLiC for LNP-siRNA&DNA systems formulated under both high and normal ionic strength conditions.
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Affiliation(s)
- Bin Zhao
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada.
| | - Albert Kamanzi
- Michael Smith Laboratories and Department of Physics, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| | - Yao Zhang
- Michael Smith Laboratories and Department of Physics, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada; School of Biomedical Engineering, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| | - Karen Y T Chan
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| | - Madelaine Robertson
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| | - Sabrina Leslie
- Michael Smith Laboratories and Department of Physics, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| | - Pieter R Cullis
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada.
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3
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Wu H, Zhang C, Zhu F, Zhu Y, Lu X, Wan Y, Su S, Chao J, Wang L, Zhu D. programmably engineered FRET-nanoflare for ratiometric live-cell ATP imaging with anti-interference capability. Chem Commun (Camb) 2023; 59:4047-4050. [PMID: 36928909 DOI: 10.1039/d3cc00690e] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
Herein, we present a poly-adenine (polyA)-mediated programmably engineered FRET-nanoflare for ratiometric intracellular ATP imaging with anti-interference capability. The programmable polyA attachment is advantageous in enhancing the signal response for ATP. Moreover, the FRET-based nanoflare is capable of avoiding false-positive signals due to probe degradation in a complex environment, which has great potential for clinical diagnosis.
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Affiliation(s)
- Hongyu Wu
- State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Chengwen Zhang
- State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Fulin Zhu
- School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yu Zhu
- State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Xinhui Lu
- State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Ying Wan
- School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Shao Su
- State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Jie Chao
- State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Lianhui Wang
- State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Dan Zhu
- State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
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4
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Yang Y, Luo T, He Y, Deng Z, Li J, Liu H, Nie J, Wang D, Huang J, Zhong S. Nanoflare Couple: Multiplexed mRNA Imaging and Logic-Controlled Combinational Therapy. Anal Chem 2022; 94:12204-12212. [PMID: 36007146 DOI: 10.1021/acs.analchem.2c02689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Theranostics, which combines both diagnostic and therapeutic capabilities in one dose, has always been an intractable challenge in personalized cancer treatment. Herein, a versatile nanotheranostic platform "nanoflare couple (NC)" has been developed for in situ multiplex cancer-related mRNA imaging and subsequent logic-controlled aggregation of gold nanoparticles, leading to gene therapy and photothermal therapy upon irradiation with infrared light. As a proof of concept, TK1 and survivin mRNAs that are highly expressed in most tumor tissues are selected as endogenous cancer indicators and therapy triggers to design the NC. Mice bearing breast cancer cells MCF-7 are prepared as a model to test its efficacy. The in vitro and in vivo assays validate that the NC show the capability for multiplexed mRNA imaging and high efficiency for logic-controlled combinational therapy of breast cancer.
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Affiliation(s)
- Yanjing Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Tong Luo
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Yao He
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Zhiwei Deng
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Jiacheng Li
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Hui Liu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Jing Nie
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - De Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Jin Huang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, P. R. China
| | - Shian Zhong
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
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5
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Dubrovin EV, Barinov NA, Klinov DV. Visualization of G-Quadruplexes, i-Motifs and Their Associates. Acta Naturae 2022; 14:4-18. [PMID: 36348720 PMCID: PMC9611856 DOI: 10.32607/actanaturae.11705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 07/13/2022] [Indexed: 09/07/2024] Open
Abstract
The non-canonical structures formed by G- or C-rich DNA regions, such as quadruplexes and i-motifs, as well as their associates, have recently been attracting increasing attention both because of the arguments in favor of their existence in vivo and their potential application in nanobiotechnology. When studying the structure and properties of non-canonical forms of DNA, as well as when controlling the artificially created architectures based on them, visualization plays an important role. This review analyzes the methods used to visualize quadruplexes, i-motifs, and their associates with high spatial resolution: fluorescence microscopy, transmission electron microscopy (TEM), and atomic force microscopy (AFM). The key approaches to preparing specimens for the visualization of this type of structures are presented. Examples of visualization of non-canonical DNA structures having various morphologies, such as G-wires, G-loops, as well as individual quadruplexes, i-motifs and their associates, are considered. The potential for using AFM for visualizing non-canonical DNA structures is demonstrated.
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Affiliation(s)
- E. V. Dubrovin
- M.V. Lomonosov Moscow State University, Faculty of Physics, Moscow, 119991 Russia
| | - N. A. Barinov
- M.V. Lomonosov Moscow State University, Faculty of Physics, Moscow, 119991 Russia
| | - D. V. Klinov
- Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, 119435 Russia
- Peoples’ Friendship University of Russia (RUDN University), Moscow, 117198 Russia
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6
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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: 13] [Impact Index Per Article: 6.5] [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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7
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Sabljo K, Napp J, Alves F, Feldmann C. pH-Dependent Fluorescence of [La(OH)2]+[ARS]– Hybrid Nanoparticles for Intracellular pH-Sensing. Chem Commun (Camb) 2022; 58:9417-9420. [DOI: 10.1039/d2cc01507b] [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
Saline inorganic-organic hybrid nanoparticles (IOH-NPs) [La(OH)2]+[ARS]– (ARS: alizarin red S) are prepared in water as a new compound (particle size: 47±7 nm, ARS load: 65 wt-%). The IOH-NPs not only...
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8
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Li J, Liu S, Wang J, Liu R, Yang X, Wang K, Huang J. Photocaged amplified FRET nanoflares: spatiotemporal controllable of mRNA-powered nanomachines for precise and sensitive microRNA imaging in live cells. Nucleic Acids Res 2021; 50:e40. [PMID: 34935962 PMCID: PMC9023253 DOI: 10.1093/nar/gkab1258] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 11/24/2021] [Accepted: 12/21/2021] [Indexed: 12/18/2022] Open
Abstract
There is considerable interest in creating a precise and sensitive strategy for in situ visualizing and profiling intracellular miRNA. Present here is a novel photocaged amplified FRET nanoflare (PAFN), which spatiotemporal controls of mRNA-powered nanomachine for precise and sensitive miRNA imaging in live cells. The PAFN could be activated remotely by light, be triggered by specific low-abundance miRNA and fueled by high-abundance mRNA. It offers high spatiotemporal control over the initial activity of nanomachine at desirable time and site, and a ‘one-to-more’ ratiometric signal amplification model. The PAFN, an unprecedented design, is quiescent during the delivery process. However, upon reaching the interest tumor site, it can be selectively activated by light, and then be triggered by specific miRNA, avoiding undesirable early activation and reducing nonspecific signals, allowing precise and sensitive detection of specific miRNA in live cells. This strategy may open new avenues for creating spatiotemporally controllable and endogenous molecule-powered nanomachine, facilitating application at biological and medical imaging.
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Affiliation(s)
- Jing Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, P.R. China.,School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, P.R. China
| | - Shiyuan Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, P.R. China
| | - Jiaoli Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, P.R. China
| | - Ruiting Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, P.R. China
| | - Xiaohai Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, P.R. China
| | - Kemin Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, P.R. China
| | - Jin Huang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, P.R. China
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9
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Liu J, Yan L, He S, Hu J. Engineering DNA quadruplexes in DNA nanostructures for biosensor construction. NANO RESEARCH 2021; 15:3504-3513. [PMID: 35401944 PMCID: PMC8983328 DOI: 10.1007/s12274-021-3869-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/28/2021] [Accepted: 09/04/2021] [Indexed: 06/14/2023]
Abstract
DNA quadruplexes are nucleic acid conformations comprised of four strands. They are prevalent in human genomes and increasing efforts are being directed toward their engineering. Taking advantage of the programmability of Watson-Crick base-pairing and conjugation methodology of DNA with other molecules, DNA nanostructures of increasing complexity and diversified geometries have been artificially constructed since 1980s. In this review, we investigate the interweaving of natural DNA quadruplexes and artificial DNA nanostructures in the development of the ever-prosperous field of biosensing, highlighting their specific roles in the construction of biosensor, including recognition probe, signal probe, signal amplifier and support platform. Their implementation in various sensing scenes was surveyed. And finally, general conclusion and future perspective are discussed for further developments.
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Affiliation(s)
- Jingxin Liu
- College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen, 518118 China
| | - Li Yan
- College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen, 518118 China
| | - Shiliang He
- College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen, 518118 China
| | - Junqing Hu
- College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen, 518118 China
- Shenzhen Bey Laboratory, Shenzhen, 518132 China
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10
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Vaughan HJ, Green JJ. Recent Advances in Gene Therapy for Cancer Theranostics. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2021; 20:100300. [PMID: 34738046 PMCID: PMC8562678 DOI: 10.1016/j.cobme.2021.100300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
There is great interest in developing gene therapies for many disease indications, including cancer. However, successful delivery of nucleic acids to tumor cells is a major challenge, and in vivo efficacy is difficult to predict. Cancer theranostics is an approach combining anti-tumor therapy with imaging or diagnostic capabilities, with the goal of monitoring successful delivery and efficacy of a therapeutic agent in a tumor. Successful theranostics must maintain a high degree of anticancer targeting and efficacy while incorporating high-contrast imaging agents that are nontoxic and compatible with clinical imaging modalities. This review highlights recent advancements in theranostic strategies, including imaging technologies and genetic engineering approaches. Graphical Abstract.
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Affiliation(s)
- Hannah J. Vaughan
- Department of Biomedical Engineering, Institute for NanoBioTechnology, and the Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21231, USA
| | - Jordan J. Green
- Department of Biomedical Engineering, Institute for NanoBioTechnology, and the Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21231, USA
- Departments of Ophthalmology, Oncology, Neurosurgery, Materials Science & Engineering, and Chemical & Biomolecular Engineering, and the Bloomberg~Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21231, USA
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11
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Li XQ, Liu XN, Jia YL, Luo XL, Chen HY, Xu JJ. Dual Recognition DNA Triangular Prism Nanoprobe: Toward the Relationship between K + and pH in Lysosomes. Anal Chem 2021; 93:14892-14899. [PMID: 34709789 DOI: 10.1021/acs.analchem.1c04056] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Lysosomal acidification is essential for its degradative function, and the flux of H+ correlated with that of K+ in lysosomes. However, there is little research on their correlation due to the lack of probes that can simultaneously image these two ions. To deeply understand the role of K+ in lysosomal acidification, here, we designed and fabricated a nanodevice using a K+-aptamer and two pH-triggered nanoswitches incorporated into a DNA triangular prism (DTP) as a dual signal response platform to simultaneously visualize K+ and pH in lysosomes by a fluorescence method. This strategy could conveniently integrate two signal recognition modules into one probe, so as to achieve the goal of sensitive detection of two kinds of signals in the same time and space, which is suitable for the detection of various signals with the correlation of concentration. By co-imaging both K+ and H+ in lysosomes, we found that the efflux of K+ was accompanied by a decrease of pH, which is of great value in understanding lysosomal acidification. Moreover, this strategy also has broad prospects as a versatile optical sensing platform for multiplexed analysis of other biomolecules in living cells.
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Affiliation(s)
- Xiao-Qiong Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xiang-Nan Liu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yi-Lei Jia
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xi-Liang Luo
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science (MOE), College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Hong-Yuan Chen
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jing-Juan Xu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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12
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Z-DNA as a Tool for Nuclease-Free DNA Methyltransferase Assay. Int J Mol Sci 2021; 22:ijms222111990. [PMID: 34769422 PMCID: PMC8585049 DOI: 10.3390/ijms222111990] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 10/29/2021] [Accepted: 10/30/2021] [Indexed: 01/16/2023] Open
Abstract
Methylcytosines in mammalian genomes are the main epigenetic molecular codes that switch off the repertoire of genes in cell-type and cell-stage dependent manners. DNA methyltransferases (DMT) are dedicated to managing the status of cytosine methylation. DNA methylation is not only critical in normal development, but it is also implicated in cancers, degeneration, and senescence. Thus, the chemicals to control DMT have been suggested as anticancer drugs by reprogramming the gene expression profile in malignant cells. Here, we report a new optical technique to characterize the activity of DMT and the effect of inhibitors, utilizing the methylation-sensitive B-Z transition of DNA without bisulfite conversion, methylation-sensing proteins, and polymerase chain reaction amplification. With the high sensitivity of single-molecule FRET, this method detects the event of DNA methylation in a single DNA molecule and circumvents the need for amplification steps, permitting direct interpretation. This method also responds to hemi-methylated DNA. Dispensing with methylation-sensitive nucleases, this method preserves the molecular integrity and methylation state of target molecules. Sparing methylation-sensing nucleases and antibodies helps to avoid errors introduced by the antibody’s incomplete specificity or variable activity of nucleases. With this new method, we demonstrated the inhibitory effect of several natural bio-active compounds on DMT. All taken together, our method offers quantitative assays for DMT and DMT-related anticancer drugs.
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13
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Yang H, Chen J, Liang Y, Zhang Y, Yin W, Xu Y, Liu SY, Dai Z, Zou X. A MOF-Shell-Confined I-Motif-Based pH Probe (MOFC-i) Strategy for Sensitive and Dynamic Imaging of Cell Surface pH. ACS APPLIED MATERIALS & INTERFACES 2021; 13:45291-45299. [PMID: 34542269 DOI: 10.1021/acsami.1c13720] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Dynamic imaging of cell surface pH is extremely challenging due to the slight changes in pH and the fast diffusion of secreted acid to the extracellular environment. In this work, we construct a novel metal-organic framework (MOF)-shell-confined i-motif-based pH probe (MOFC-i) strategy that enables sensitive and dynamic imaging of cell surface pH. The CY3- and CY5-labeled i-motif, which is hybridized via its short complementary chain with two-base mismatches, is optimized for sensing at physiological pH. After efficiently anchoring the optimized pH probes onto the cell membrane with the aid of cholesterol groups, a biocompatible microporous MOF shell is then formed around the cell by cross-linking ZIF-8 nanoparticles via tannic acid. The microporous MOF shell can confine secreted acid without inhibiting the normal physiological activities of cells; thus, the MOFC-i strategy can be used to monitor dynamic changes in the cell surface pH of living cells. Furthermore, this method can not only clearly distinguish the different metabolic behaviors of cancer cells and normal cells but also reveal drug effects on the cell surface pH or metabolism, providing promising prospects in pH-related diagnostics and drug screening.
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Affiliation(s)
- Huihui Yang
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jun Chen
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Yuling Liang
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Yanfei Zhang
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Wen Yin
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Yuzhi Xu
- Scientific Research Center, Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen 518107, China
| | - Si-Yang Liu
- Key Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province, School of Biomedical Engineering, Sun Yat-Sen University, Shenzhen 518107, China
| | - Zong Dai
- Key Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province, School of Biomedical Engineering, Sun Yat-Sen University, Shenzhen 518107, China
| | - Xiaoyong Zou
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
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14
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Hu F, Huang Y, Xiao Y, Li Y, Luo X, Qian X, Yang Y. A dual-channel Hill-type small-molecule pH probe. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:3012-3016. [PMID: 34212163 DOI: 10.1039/d1ay00868d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
By combining a Hill-type pH probe and a pH-insensitive naphthalimide fluorophore, we synthesized a FRET-based ratiometric pH probe (PHHF), exhibiting a reduced pH transition width, representing a unique approach for development of sensitive probes for detection of biorelevant pH changes.
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Affiliation(s)
- Fang Hu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, East China University of Science and Technology, Shanghai, 200237, China.
| | - Yunxia Huang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, East China University of Science and Technology, Shanghai, 200237, China.
| | - Yansheng Xiao
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, East China University of Science and Technology, Shanghai, 200237, China.
| | - Yanchun Li
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, East China University of Science and Technology, Shanghai, 200237, China.
| | - Xiao Luo
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China.
| | - Xuhong Qian
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, East China University of Science and Technology, Shanghai, 200237, China.
| | - Youjun Yang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, East China University of Science and Technology, Shanghai, 200237, China.
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15
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Lu S, Shen J, Fan C, Li Q, Yang X. DNA Assembly-Based Stimuli-Responsive Systems. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2100328. [PMID: 34258165 PMCID: PMC8261508 DOI: 10.1002/advs.202100328] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 03/05/2021] [Indexed: 05/06/2023]
Abstract
Stimuli-responsive designs with exogenous stimuli enable remote and reversible control of DNA nanostructures, which break many limitations of static nanostructures and inspired development of dynamic DNA nanotechnology. Moreover, the introduction of various types of organic molecules, polymers, chemical bonds, and chemical reactions with stimuli-responsive properties development has greatly expand the application scope of dynamic DNA nanotechnology. Here, DNA assembly-based stimuli-responsive systems are reviewed, with the focus on response units and mechanisms that depend on different exogenous stimuli (DNA strand, pH, light, temperature, electricity, metal ions, etc.), and their applications in fields of nanofabrication (DNA architectures, hybrid architectures, nanomachines, and constitutional dynamic networks) and biomedical research (biosensing, bioimaging, therapeutics, and theranostics) are discussed. Finally, the opportunities and challenges for DNA assembly-based stimuli-responsive systems are overviewed and discussed.
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Affiliation(s)
- Shasha Lu
- School of Chemistry and Chemical EngineeringFrontiers Science Center for Transformative MoleculesInstitute of Translational MedicineShanghai Jiao Tong UniversityShanghai200240China
| | - Jianlei Shen
- School of Chemistry and Chemical EngineeringFrontiers Science Center for Transformative MoleculesInstitute of Translational MedicineShanghai Jiao Tong UniversityShanghai200240China
| | - Chunhai Fan
- School of Chemistry and Chemical EngineeringFrontiers Science Center for Transformative MoleculesInstitute of Translational MedicineShanghai Jiao Tong UniversityShanghai200240China
- Institute of Molecular MedicineShanghai Key Laboratory for Nucleic Acid Chemistry and NanomedicineDepartment of UrologyRenji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai200127China
| | - Qian Li
- School of Chemistry and Chemical EngineeringFrontiers Science Center for Transformative MoleculesInstitute of Translational MedicineShanghai Jiao Tong UniversityShanghai200240China
| | - Xiurong Yang
- School of Chemistry and Chemical EngineeringFrontiers Science Center for Transformative MoleculesInstitute of Translational MedicineShanghai Jiao Tong UniversityShanghai200240China
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16
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Cai S, Wang J, Li J, Zhou B, He C, Meng X, Huang J, Wang K. A self-assembled DNA nanostructure as a FRET nanoflare for intracellular ATP imaging. Chem Commun (Camb) 2021; 57:6257-6260. [PMID: 34060563 DOI: 10.1039/d1cc02316k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Due to the incorporation of gold nanoparticles (AuNPs), previously reported AuNP-based FRET nanoflares still have some problems, such as non-negligible cytotoxicity and a time-consuming preparation procedure. In this communication, a novel AuNP-free FRET nanoflare for intracellular ATP imaging is developed based on a DNA nanostructure, which is self-assembled through cyclic U-type hybridization only involving a certain number of DNA strands.
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Affiliation(s)
- Shijun Cai
- College of Biology, College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, China.
| | - Jiaoli Wang
- College of Biology, College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, China.
| | - Jing Li
- College of Biology, College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, China.
| | - Bing Zhou
- College of Biology, College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, China.
| | - Chunmei He
- College of Biology, College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, China.
| | - Xiangxian Meng
- College of Biology, College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, China.
| | - Jin Huang
- College of Biology, College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, China.
| | - Kemin Wang
- College of Biology, College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, China.
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17
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Yue X, Qiao Y, Gu D, Qi R, Zhao H, Yin Y, Zhao W, Xi R, Meng M. DNA-Based pH Nanosensor with Adjustable FRET Responses to Track Lysosomes and pH Fluctuations. Anal Chem 2021; 93:7250-7257. [PMID: 33944568 DOI: 10.1021/acs.analchem.1c00436] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Extensive attention has been recently focused on designing signal adjustable biosensors. However, there are limited approaches available in this field. In this work, to visually track lysosomes with high contrast, we used the i-motif structure as a pH-responsive unit and proposed a novel strategy to regulate the fluorescence resonance energy transfer (FRET) response of the pH sensor. By simply splitting the i-motif into two parts and modulating the split parameters, we can tune the pH transition midpoint (pHt) from 5.71 to 6.81 and the signal-to-noise ratio (S/N) from 1.94 to 18.11. To facilitate the lysosome tracking, we combined the i-motif split design with tetrahedral DNA (Td). The obtained pH nanosensor (pH-Td) displays appropriate pHt (6.12) to trace lysosomes with high S/N (10.3). Benefited from the improved stability, the superior cell uptake and lysosomal location of pH-Td, the visualization of the distribution of lysosomes, the lysosome-mitochondria interaction, and the pH changes of lysosomes in response to different stimuli were successfully achieved in NIH 3T3 cells. We believe that the design concept of controlling the split sequence distance will provide a novel insight into the design of i-motif-based nanosensors and even inspire the construction of smart DNA nanodevices for sensing, disease diagnosis, and controllable drug delivery.
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Affiliation(s)
- Xinmin Yue
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and KLMDASR of Tianjin, Nankai University, Tongyan Road, Haihe Education Park, Tianjin 300350, People's Republic of China
| | - Yanqi Qiao
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and KLMDASR of Tianjin, Nankai University, Tongyan Road, Haihe Education Park, Tianjin 300350, People's Republic of China
| | - Dening Gu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and KLMDASR of Tianjin, Nankai University, Tongyan Road, Haihe Education Park, Tianjin 300350, People's Republic of China
| | - Rui Qi
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and KLMDASR of Tianjin, Nankai University, Tongyan Road, Haihe Education Park, Tianjin 300350, People's Republic of China
| | - Hongjie Zhao
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and KLMDASR of Tianjin, Nankai University, Tongyan Road, Haihe Education Park, Tianjin 300350, People's Republic of China
| | - Yongmei Yin
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and KLMDASR of Tianjin, Nankai University, Tongyan Road, Haihe Education Park, Tianjin 300350, People's Republic of China
| | - Wei Zhao
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and KLMDASR of Tianjin, Nankai University, Tongyan Road, Haihe Education Park, Tianjin 300350, People's Republic of China
| | - Rimo Xi
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and KLMDASR of Tianjin, Nankai University, Tongyan Road, Haihe Education Park, Tianjin 300350, People's Republic of China
| | - Meng Meng
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and KLMDASR of Tianjin, Nankai University, Tongyan Road, Haihe Education Park, Tianjin 300350, People's Republic of China
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18
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Nwokolo OA, Kidd B, Allen T, Minasyan AS, Vardelly S, Johnson KD, Nesterova IV. Rational Design of Memory‐Based Sensors: the Case of Molecular Calorimeters. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202011422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Obianuju A. Nwokolo
- Department of Chemistry and Biochemistry Northern Illinois University DeKalb IL 60115 USA
| | - Brant Kidd
- Department of Chemistry and Biochemistry Northern Illinois University DeKalb IL 60115 USA
| | - Te'Kara Allen
- Department of Chemistry and Biochemistry Northern Illinois University DeKalb IL 60115 USA
| | - Alexander S. Minasyan
- Department of Chemistry and Biochemistry Northern Illinois University DeKalb IL 60115 USA
| | - Suchitra Vardelly
- Department of Chemistry and Biochemistry Northern Illinois University DeKalb IL 60115 USA
| | - Kristopher D. Johnson
- Department of Chemistry and Biochemistry Northern Illinois University DeKalb IL 60115 USA
| | - Irina V. Nesterova
- Department of Chemistry and Biochemistry Northern Illinois University DeKalb IL 60115 USA
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19
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Arlauckas S, Oh N, Li R, Weissleder R, Miller MA. Macrophage imaging and subset analysis using single-cell RNA sequencing. Nanotheranostics 2021; 5:36-56. [PMID: 33391974 PMCID: PMC7738942 DOI: 10.7150/ntno.50185] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 10/19/2020] [Indexed: 12/12/2022] Open
Abstract
Macrophages have been associated with drug response and resistance in diverse settings, thus raising the possibility of using macrophage imaging as a companion diagnostic to inform personalized patient treatment strategies. Nanoparticle-based contrast agents are especially promising because they efficiently deliver fluorescent, magnetic, and/or radionuclide labels by leveraging the intrinsic capacity of macrophages to accumulate nanomaterials in their role as professional phagocytes. Unfortunately, current clinical imaging modalities are limited in their ability to quantify broad molecular programs that may explain (a) which particular cell subsets a given imaging agent is actually labeling, and (b) what mechanistic role those cells play in promoting drug response or resistance. Highly multiplexed single-cell approaches including single-cell RNA sequencing (scRNAseq) have emerged as resources to help answer these questions. In this review, we query recently published scRNAseq datasets to support companion macrophage imaging, with particular focus on using dextran-based nanoparticles to predict the action of anti-cancer nanotherapies and monoclonal antibodies.
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Affiliation(s)
- Sean Arlauckas
- Center for Systems Biology, Massachusetts General Hospital Research Institute, Boston, MA 02114, USA
| | - Nuri Oh
- Center for Systems Biology, Massachusetts General Hospital Research Institute, Boston, MA 02114, USA
| | - Ran Li
- Center for Systems Biology, Massachusetts General Hospital Research Institute, Boston, MA 02114, USA.,Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Ralph Weissleder
- Center for Systems Biology, Massachusetts General Hospital Research Institute, Boston, MA 02114, USA.,Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02115, USA.,Department of Systems Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Miles A Miller
- Center for Systems Biology, Massachusetts General Hospital Research Institute, Boston, MA 02114, USA.,Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02115, USA
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20
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Wang Z, Detomasi TC, Chang CJ. A dual-fluorophore sensor approach for ratiometric fluorescence imaging of potassium in living cells. Chem Sci 2020; 12:1720-1729. [PMID: 34163931 PMCID: PMC8179100 DOI: 10.1039/d0sc03844j] [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: 07/14/2020] [Accepted: 12/03/2020] [Indexed: 12/31/2022] Open
Abstract
Potassium is the most abundant intracellular metal in the body, playing vital roles in regulating intracellular fluid volume, nutrient transport, and cell-to-cell communication through nerve and muscle contraction. On the other hand, aberrant alterations in K+ homeostasis contribute to a diverse array of diseases spanning cardiovascular and neurological disorders to diabetes to kidney disease to cancer. There is an unmet need for studies of K+ physiology and pathology owing to the large differences in intracellular versus extracellular K+ concentrations ([K+]intra = 150 mM, [K+]extra = 3-5 mM). With a relative dearth of methods to reliably measure dynamic changes in intracellular K+ in biological specimens that meet the dual challenges of low affinity and high selectivity for K+, particularly over Na+, currently available fluorescent K+ sensors are largely optimized with high-affinity receptors that are more amenable for extracellular K+ detection. We report the design, synthesis, and biological evaluation of Ratiometric Potassium Sensor 1 (RPS-1), a dual-fluorophore sensor that enables ratiometric fluorescence imaging of intracellular potassium in living systems. RPS-1 links a potassium-responsive fluorescent sensor fragment (PS525) with a low-affinity, high-selectivity crown ether receptor for K+ to a potassium-insensitive reference fluorophore (Coumarin 343) as an internal calibration standard through ester bonds. Upon intracellular delivery, esterase-directed cleavage splits these two dyes into separate fragments to enable ratiometric detection of K+. RPS-1 responds to K+ in aqueous buffer with high selectivity over competing metal ions and is sensitive to potassium ions at steady-state intracellular levels and can respond to decreases or increases from that basal set point. Moreover, RPS-1 was applied for comparative screening of K+ pools across a panel of different cancer cell lines, revealing elevations in basal intracellular K+ in metastatic breast cancer cell lines vs. normal breast cells. This work provides a unique chemical tool for the study of intracellular potassium dynamics and a starting point for the design of other ratiometric fluorescent sensors based on two-fluorophore approaches that do not rely on FRET or related energy transfer designs.
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Affiliation(s)
- Zeming Wang
- Department of Chemistry, University of California Berkeley CA 94720 USA
| | - Tyler C Detomasi
- Department of Chemistry, University of California Berkeley CA 94720 USA
| | - Christopher J Chang
- Department of Chemistry, University of California Berkeley CA 94720 USA
- Department of Molecular and Cell Biology, University of California Berkeley CA 94720 USA
- Helen Wills Neuroscience Institute, University of California Berkeley CA 94720 USA
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21
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Pan R, Lu X, Ju J, Guan Q, Su Y, Li C, Li P. Ratiometric nanoprobe for circulating tumor cell detection and intracellular hydrogen peroxide evaluation in colorectal cancer patients. Bioorg Med Chem 2020; 30:115930. [PMID: 33352390 DOI: 10.1016/j.bmc.2020.115930] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 11/30/2020] [Accepted: 12/02/2020] [Indexed: 12/11/2022]
Abstract
The application of intensity-based H2O2-responsive fluorescence nanoprobe for circulating tumor cell detection was limited by the complex background and the nanoprobe uptake in each CTC. In this context, we developed a ratiometric fluorescence nanoprobe, on which a H2O2-responsive subunit and a stable subunit grafted working as a H2O2 detector and a reference, respectively. When responding to intracellular H2O2, the reference fluorescence (580 nm) maintained as a correction background while the detector fluorescence (450 nm) was turned on to conduct CTC enumeration and intracellular H2O2 evaluation. Two normal cells and three colon cancer cells were examined to evaluate their endogenous H2O2 with the ratiometric nanoprobe by flow cytometry and confocal laser scanning microscopy. CTC sample from colorectal cancer patients was used to validate the performance of the nanoprobe for CTC enumeration and H2O2 evaluation. The results indicated that not only CTC could be effectively identified based on the "turn on" fluorescence, but also the viability of the identified CTCs could be assessed with the intensity of the reference fluorescence to avoid the false-positive number. Moreover, the clinical results demonstrated that the viability CTC count combined with intracellular H2O2 content (described as I450/580)were related to the tumor TNM stage, which might provide significant guidance for clinical treatments.
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Affiliation(s)
- Ruijun Pan
- Department of Nuclear Medicine Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, People's Republic of China; Department of General Surgery, Shanghai Minimally Invasive Surgery Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, People's Republic of China
| | - Xinmiao Lu
- Department of Nuclear Medicine Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, People's Republic of China
| | - Junhui Ju
- Department of Nuclear Medicine Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, People's Republic of China
| | - Qinghua Guan
- Department of Nuclear Medicine Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, People's Republic of China
| | - Yue Su
- Department of Nuclear Medicine Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, People's Republic of China
| | - Chunting Li
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China.
| | - Peiyong Li
- Department of Nuclear Medicine Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, People's Republic of China.
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22
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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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23
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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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24
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Nwokolo OA, Kidd B, Allen T, Minasyan AS, Vardelly S, Johnson KD, Nesterova IV. Rational Design of Memory-Based Sensors: the Case of Molecular Calorimeters. Angew Chem Int Ed Engl 2020; 60:1610-1614. [PMID: 32996657 DOI: 10.1002/anie.202011422] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 09/22/2020] [Indexed: 12/11/2022]
Abstract
Thermodynamic characterization is crucial for understanding molecular interactions. However, methodologies for measuring heat changes in small open systems are extremely limited. We document a new approach for designing molecular sensors, that function as calorimeters: sensors based on memory. To design a memory-based sensor, we take advantage of the unique kinetic properties of nucleic acid scaffolds. Particularly, we elaborate on the differences in folding and unfolding rates in nucleic acid quadruplexes. DNA-based i-motifs unfold fast in response to small heats but do not fold back when the system is equilibrated with surroundings. We translated this behavior into a molecular memory function that enables the measurement of heat changes in open environments. The new sensors are biocompatible, operate homogeneously, and measure small heats released over long time periods. As a proof-of-concept, we demonstrate how the molecular calorimeters report heat changes generated in water/propanol mixing and in ligand/protein binding.
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Affiliation(s)
- Obianuju A Nwokolo
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL, 60115, USA
| | - Brant Kidd
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL, 60115, USA
| | - Te'Kara Allen
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL, 60115, USA
| | - Alexander S Minasyan
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL, 60115, USA
| | - Suchitra Vardelly
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL, 60115, USA
| | - Kristopher D Johnson
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL, 60115, USA
| | - Irina V Nesterova
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL, 60115, USA
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25
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Zhang RL, Pratiwi FW, Chen BC, Chen P, Wu SH, Mou CY. Simultaneous Single-Particle Tracking and Dynamic pH Sensing Reveal Lysosome-Targetable Mesoporous Silica Nanoparticle Pathways. ACS APPLIED MATERIALS & INTERFACES 2020; 12:42472-42484. [PMID: 32657564 DOI: 10.1021/acsami.0c07917] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Nanoparticle (NP)-based targeted drug delivery is intended to transport therapeutically active molecules to specific cells and particular intracellular compartments. However, there is limited knowledge regarding the complete route of NPs in this targeting scenario. In this study, simultaneously performing motion and dynamic pH sensing using single-particle tracking (SPT) leads to an alternative method of gaining insights into the mesoporous silica nanoparticle's (MSN) journey in targeting lysosome. Two different pH-sensitive dyes and a reference dye are incorporated into mesoporous silica nanoparticles (MSNs) via co-condensation to broaden the measurable pH range (pH 4-7.5) of the nanoprobe. The phosphonate, amine, and lysosomal sorting peptides (YQRLGC) are conjugated onto the MSN's surface to study intracellular nano-biointeractions of two oppositely charged and lysosome-targetable MSNs. The brightness and stability of these MSNs allow their movement and dynamic pH evolution during their journey to be simultaneously monitored in real time. Importantly, a multidimensional analysis of MSN's movement and local pH has revealed new model intracellular dynamic states and distributions of MSNs, previously inaccessible when using single parameters alone. A key result is that YQRLGC-conjugated MSNs took an alternative route to target lysosomes apart from the traditional one, which sped up to 4 h and enhanced their targeting efficiency (up to 32%). The findings enrich our understanding of the intracellular journey of MSNs. This study offers complementary information on correlating the surface design with the full pathway of nanoparticles to achieve targeted delivery of therapeutic payload.
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Affiliation(s)
- Rong-Lin Zhang
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Feby Wijaya Pratiwi
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
- Research Center for Applied Sciences, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 11529, Taiwan
| | - Bi-Chang Chen
- Research Center for Applied Sciences, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 11529, Taiwan
| | - Peilin Chen
- Research Center for Applied Sciences, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 11529, Taiwan
| | - Si-Han Wu
- Graduate Institute of Nanomedicine and Medical Engineering, Taipei Medical University, 250 Wu Xinyi Street, Taipei 11031, Taiwan
| | - Chung-Yuan Mou
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
- Graduate Institute of Nanomedicine and Medical Engineering, Taipei Medical University, 250 Wu Xinyi Street, Taipei 11031, Taiwan
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26
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Zhao H, Hu W, Jing J, Zhang X. One-step G-quadruplex-based fluorescence resonance energy transfer sensing method for ratiometric detection of uracil-DNA glycosylase activity. Talanta 2020; 221:121609. [PMID: 33076139 DOI: 10.1016/j.talanta.2020.121609] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 08/20/2020] [Accepted: 08/27/2020] [Indexed: 10/23/2022]
Abstract
Uracil-DNA glycosylase (UDG) is a crucial enzyme in base excision repair (BER) pathway. It can repair the uracil-induced DNA lesions and maintain the integrity of genome. In this paper, we developed a facile and ratiometric strategy for UDG activity detection using fluorescence resonance energy transfer (FRET). One double-stranded DNA (dsDNA) substrate consisting of strand 1 (dual-fluorescent dye-modified G-quadruplex sequence single-stranded DNA (ssDNA)), carboxyfluorescein (FAM) acted as donor and tetramethylrhodamine (TAMRA) as acceptor) and strand 2 (the complementary sequence of strand 1 containing three mismatched bases and three uracil bases) was introduced. When the UDG-catalyzed uracil is removed from dsDNA, the thermo-stability of dsDNA is decreased and the dual-fluorescent dye-modified G-quadruplex sequence ssDNA is released. Then, the ssDNA transforms into a G-quadruplex comformation, which brings the labeled FAM and TAMRA into close proximity, resulting in a strong FRET signal. In the absence of UDG, the relatively stable dsDNA separates the labeled FAM and TAMRA, giving a weak FRET signal. Thus, by measuring the system fluorescence intensity and exploiting FRET signal difference, UDG activity can be detected in a simple process. The detection limit is 0.087 U/mL without requiring additional signal amplification process. Besides, our developed strategy can also be used for screening the UDG inhibitors in a ratiometric fluorescence detection way.
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Affiliation(s)
- Hengzhi Zhao
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, PR China
| | - Wei Hu
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, PR China
| | - Jing Jing
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, PR China
| | - Xiaoling Zhang
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, PR China.
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27
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Tsai ES, Joud F, Wiesholler LM, Hirsch T, Hall EAH. Upconversion nanoparticles as intracellular pH messengers. Anal Bioanal Chem 2020; 412:6567-6581. [PMID: 32613570 PMCID: PMC7442772 DOI: 10.1007/s00216-020-02768-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 06/07/2020] [Accepted: 06/11/2020] [Indexed: 02/02/2023]
Abstract
Upconversion nanoparticles (UCNPs) should be particularly well suited for measurement inside cells because they can be imaged down to submicrometer dimensions in near real time using fluorescence microscopy, and they overcome problems, such as photobleaching, autofluorescence, and deep tissue penetration, that are commonly encountered in cellular imaging applications. In this study, the performance of an UCNP modified with a pH-sensitive dye (pHAb) is studied. The dye (emission wavelength 580 nm) was attached in a polyethylene imine (PEI) coating on the UCNP and excited via the 540-nm UCNP emission under 980-nm excitation. The UC resonance energy transfer efficiencies at different pHs ranged from 25 to 30% and a Förster distance of 2.56 nm was predicted from these results. Human neuroblastoma SH-SY5Y cells, equilibrated with nigericin H+/K+ ionophore to equalize the intra- and extracellular pH' showed uptake of the UCNP-pHAb conjugate particles and, taking the ratio of the intensity collected from the pHAb emission channel (565-630 nm) to that from the UCNP red emission channel (640-680 nm), produced a sigmoidal pH response curve with an apparent pKa for the UCNP-pHAb of ~ 5.1. The UCNP-pHAb were shown to colocalize with LysoBrite dye, a lysosome marker. Drug inhibitors such as chlorpromazine (CPZ) and nystatin (NYS) that interfere with clathrin-mediated endocytosis and caveolae-mediated endocytosis, respectively, were investigated to elucidate the mechanism of nanoparticle uptake into the cell. This preliminary study suggests that pH indicator-modified UCNPs such as UCNP-pHAb can report pH in SH-SY5Y cells and that the incorporation of the nanoparticles into the cell occurs via clathrin-mediated endocytosis. Graphical abstract.
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Affiliation(s)
- Evaline S Tsai
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Dr., Cambridge, CB3 0AS, UK
| | - Fadwa Joud
- Cancer Research UK Cambridge Institute, University of Cambridge, LiKa Shing Centre, Robinson Way, Cambridge, CB2 0RE, UK
| | - Lisa M Wiesholler
- Institute of Analytical Chemistry, University of Regensburg, Universitätsstr. 31, 93053, Regensburg, Germany
| | - Thomas Hirsch
- Institute of Analytical Chemistry, University of Regensburg, Universitätsstr. 31, 93053, Regensburg, Germany
| | - Elizabeth A H Hall
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Dr., Cambridge, CB3 0AS, UK.
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28
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Li J, Wang J, Liu S, Xie N, Quan K, Yang Y, Yang X, Huang J, Wang K. Amplified FRET Nanoflares: An Endogenous mRNA‐Powered Nanomachine for Intracellular MicroRNA Imaging. Angew Chem Int Ed Engl 2020; 59:20104-20111. [DOI: 10.1002/anie.202008245] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 07/12/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Jing Li
- State key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province Hunan University Changsha P. R. China
| | - Jiaoli Wang
- State key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province Hunan University Changsha P. R. China
| | - Shiyuan Liu
- State key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province Hunan University Changsha P. R. China
| | - Nuli Xie
- State key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province Hunan University Changsha P. R. China
| | - Ke Quan
- School of Chemistry and Food Engineering Changsha University of Science and Technology Changsha P. R. China
| | - Yanjing Yang
- College of Chemistry and Chemical Engineering Central South University Changsha P. R. China
| | - Xiaohai Yang
- State key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province Hunan University Changsha P. R. China
| | - Jin Huang
- State key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province Hunan University Changsha P. R. China
| | - Kemin Wang
- State key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province Hunan University Changsha P. R. China
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29
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Li J, Wang J, Liu S, Xie N, Quan K, Yang Y, Yang X, Huang J, Wang K. Amplified FRET Nanoflares: An Endogenous mRNA‐Powered Nanomachine for Intracellular MicroRNA Imaging. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008245] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Jing Li
- State key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province Hunan University Changsha P. R. China
| | - Jiaoli Wang
- State key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province Hunan University Changsha P. R. China
| | - Shiyuan Liu
- State key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province Hunan University Changsha P. R. China
| | - Nuli Xie
- State key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province Hunan University Changsha P. R. China
| | - Ke Quan
- School of Chemistry and Food Engineering Changsha University of Science and Technology Changsha P. R. China
| | - Yanjing Yang
- College of Chemistry and Chemical Engineering Central South University Changsha P. R. China
| | - Xiaohai Yang
- State key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province Hunan University Changsha P. R. China
| | - Jin Huang
- State key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province Hunan University Changsha P. R. China
| | - Kemin Wang
- State key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province Hunan University Changsha P. R. China
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30
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Lysosome-targeted ratiometric fluorescent sensor for monitoring pH in living cells based on one-pot-synthesized carbon dots. Mikrochim Acta 2020; 187:478. [DOI: 10.1007/s00604-020-04462-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 07/24/2020] [Indexed: 10/23/2022]
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31
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Alheety S, Valenti D, Mujumdar N, Ellis N, Campiglia AD, Harper JK, Heider EC. Characterization of a Bio-sourced, Fluorescent, Ratiometric pH Indicator with Alkaline pK a. Photochem Photobiol 2020; 96:1176-1181. [PMID: 32562274 DOI: 10.1111/php.13299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 06/11/2020] [Indexed: 11/27/2022]
Abstract
Utilizing organisms as sources of fluorophores relieves the demand for petroleum feedstock in organic synthesis of fluorescent products, and endophytic fungi provide a promising vein for natural fluorescent products. We report the characterization of a pH-responsive fluorophore from an endophytic fungus isolated from sand pine. The endogenous fluorescence of the live organism was measured using fluorescence microscopy. Computational interpretation of the spectra was accomplished with time-dependent density functional theory methods. The combined use of experimental and theoretically predicted spectra revealed the pH equilibria and photoexcited tautomerization of the natural product, 5-methylmellein. This product shows promise both as a stand-alone pH-indicating fluorophore, with alkaline pKa , and as "green" feedstock for synthesis of custom fluorophores.
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Affiliation(s)
| | | | | | | | | | - James K Harper
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT
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32
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Méndez‐Ardoy A, Reina JJ, Montenegro J. Synthesis and Supramolecular Functional Assemblies of Ratiometric pH Probes. Chemistry 2020; 26:7516-7536. [DOI: 10.1002/chem.201904834] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/20/2019] [Indexed: 01/28/2023]
Affiliation(s)
- Alejandro Méndez‐Ardoy
- Centro Singular de Investigación en Química Biolóxica e, Materiais Moleculares (CIQUS)Departamento de Química OrgánicaUniversidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Jose J. Reina
- Centro Singular de Investigación en Química Biolóxica e, Materiais Moleculares (CIQUS)Departamento de Química OrgánicaUniversidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Javier Montenegro
- Centro Singular de Investigación en Química Biolóxica e, Materiais Moleculares (CIQUS)Departamento de Química OrgánicaUniversidade de Santiago de Compostela 15782 Santiago de Compostela Spain
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33
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Samanta D, Ebrahimi SB, Mirkin CA. Nucleic-Acid Structures as Intracellular Probes for Live Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1901743. [PMID: 31271253 PMCID: PMC6942251 DOI: 10.1002/adma.201901743] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 05/08/2019] [Indexed: 05/02/2023]
Abstract
The chemical composition of cells at the molecular level determines their growth, differentiation, structure, and function. Probing this composition is powerful because it provides invaluable insight into chemical processes inside cells and in certain cases allows disease diagnosis based on molecular profiles. However, many techniques analyze fixed cells or lysates of bulk populations, in which information about dynamics and cellular heterogeneity is lost. Recently, nucleic-acid-based probes have emerged as a promising platform for the detection of a wide variety of intracellular analytes in live cells with single-cell resolution. Recent advances in this field are described and common strategies for probe design, types of targets that can be identified, current limitations, and future directions are discussed.
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Affiliation(s)
- Devleena Samanta
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - Sasha B Ebrahimi
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - Chad A Mirkin
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
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34
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Ashraf S, Hassan Said A, Hartmann R, Assmann M, Feliu N, Lenz P, Parak WJ. Quantitative Particle Uptake by Cells as Analyzed by Different Methods. Angew Chem Int Ed Engl 2020; 59:5438-5453. [PMID: 31657113 PMCID: PMC7155048 DOI: 10.1002/anie.201906303] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 10/21/2019] [Indexed: 12/21/2022]
Abstract
There is a large number of two-dimensional static in vitro studies about the uptake of colloidal nano- and microparticles, which has been published in the last decade. In this Minireview, different methods used for such studies are summarized and critically discussed. Supplementary experimental data allow for a direct comparison of the different techniques. Emphasis is given on how quantitative parameters can be extracted from studies in which different experimental techniques have been used, with the goal of allowing better comparison.
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Affiliation(s)
- Sumaira Ashraf
- Fachbereich PhysikPhilipps Universität Marburg35037MarburgGermany
- Institute of Industrial BiotechnologyGovernment College University LahorePunjab54000Pakistan
| | - Alaa Hassan Said
- Fachbereich PhysikPhilipps Universität Marburg35037MarburgGermany
- Electronics and Nano Devices lab (END)Department of PhysicsFaculty of SciencesSouth Valley University83523QenaEgypt
| | - Raimo Hartmann
- Fachbereich PhysikPhilipps Universität Marburg35037MarburgGermany
| | - Marcus‐Alexander Assmann
- Fachbereich PhysikPhilipps Universität Marburg35037MarburgGermany
- Fraunhofer Institute for High-Speed DynamicsErnst Mach Institute79104FreiburgGermany
| | - Neus Feliu
- Fachbereich Physik und Chemie, CHyNUniversität Hamburg20146HamburgGermany
| | - Peter Lenz
- Fachbereich PhysikPhilipps Universität Marburg35037MarburgGermany
| | - Wolfgang J. Parak
- Fachbereich Physik und Chemie, CHyNUniversität Hamburg20146HamburgGermany
- Institute of Nano Biomedicine and EngineeringKey Laboratory for Thin Film and Microfabrication Technology of the Ministry of EducationDepartment of Instrument Science and EngineeringSchool of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghaiChina
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35
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Analyse quantitativer Partikelaufnahme von Zellen über verschiedene Messmethoden. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201906303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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36
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Wang A, Lin Q, Liu S, Li J, Wang J, Quan K, Yang X, Huang J, Wang K. Aptamer-tethered self-assembled FRET-flares for microRNA imaging in living cancer cells. Chem Commun (Camb) 2020; 56:2463-2466. [PMID: 31996881 DOI: 10.1039/c9cc09919k] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We report an aptamer-tethered, self-assembled DNA nanowire as a multivalent vehicle for the intracellular delivery of FRET flares. The FRET flares are bound to the nanowire and fluorescently labeled donors and acceptors at two ends, respectively. In the absence of targets, the flares are captured by binding with the nanowires, separating the donor and acceptor (low FRET). However, in the presence of target miRNAs, the flares are displaced from the nanowire, subsequently forming hairpin structures that bring the donor and acceptor into close proximity (high FRET).
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Affiliation(s)
- Anmin Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, China.
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37
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38
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Wang H, Peng P, Wang Q, Du Y, Tian Z, Li T. Environment-Recognizing DNA-Computation Circuits for the Intracellular Transport of Molecular Payloads for mRNA Imaging. Angew Chem Int Ed Engl 2020; 59:6099-6107. [PMID: 31981393 DOI: 10.1002/anie.201916432] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 01/21/2020] [Indexed: 01/04/2023]
Abstract
Programming intelligent DNA nanocarriers for the targeted transport of molecular payloads in living cells has attracted extensive attention. In vivo activation of these nanocarriers usually relies on external light irradiation. An interest is emerging in the automatic recognition of intracellular surroundings by nanocarriers and their in situ activation under the control of programmed DNA-computation circuits. Herein, we report the integration of DNA circuits with framework nucleic acid (FNA) nanocarriers that consist of a truncated square pyramid (TSP) cage and a built-in duplex cargo containing an antisense strand of the target mRNA. An i-motif and ATP aptamer embedded in the TSP are employed as logic-controlling units to respond to H+ and ATP inside cellular compartments, triggering the release of the sensing element for fluorescent mRNA imaging. Logic-controlled FNA devices could be used to target drug delivery, enabling precise disease treatment.
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Affiliation(s)
- Huihui Wang
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
| | - Pai Peng
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
| | - Qiwei Wang
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
| | - Yi Du
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
| | - Zhijin Tian
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
| | - Tao Li
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
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39
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Wang H, Peng P, Wang Q, Du Y, Tian Z, Li T. Environment‐Recognizing DNA‐Computation Circuits for the Intracellular Transport of Molecular Payloads for mRNA Imaging. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916432] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Huihui Wang
- Department of ChemistryUniversity of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - Pai Peng
- Department of ChemistryUniversity of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - Qiwei Wang
- Department of ChemistryUniversity of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - Yi Du
- Department of ChemistryUniversity of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - Zhijin Tian
- Department of ChemistryUniversity of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - Tao Li
- Department of ChemistryUniversity of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
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40
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Li Z, Chen W, Dong L, Song Y, Li R, Li Q, Qu D, Zhang H, Yang Q, Li Y. A novel ratiometric and reversible fluorescent probe based on naphthalimide for the detection of Al3+ and pH with excellent selectivity. NEW J CHEM 2020. [DOI: 10.1039/c9nj06309a] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A novel ratiometric and reversible fluorescence probe was designed and synthesized. The fluorescent probe recognizes Al3+ to cause a blue shift in the fluorescence emission spectrum. Fluorescence probe can be used as a sensor to detect Al3+ in living cells and Zebra fishes. The probe can detect the pH value when the alkalinity range was 8–10.
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Affiliation(s)
- Zhuo Li
- College of Chemistry
- Jilin University
- Changchun 130021
- P. R. China
- College of Materials Science and Engineering
| | - Weihong Chen
- Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Liuyan Dong
- School of Chemistry and Environmental Engineering
- Changchun University of Science and Technology
- Changchun 130022
- P. R. China
| | - Yan Song
- College of Chemistry
- Jilin University
- Changchun 130021
- P. R. China
- College of Materials Science and Engineering
| | - Ronghang Li
- Orthopaedic Medical Center
- the Second Hospital of Jilin University
- Changchun
- P. R. China
| | - Qiang Li
- College of Chemistry
- Jilin University
- Changchun 130021
- P. R. China
| | - Dehui Qu
- College of Chemistry
- Jilin University
- Changchun 130021
- P. R. China
- College of Materials Science and Engineering
| | - Hao Zhang
- Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Qingbiao Yang
- College of Chemistry
- Jilin University
- Changchun 130021
- P. R. China
| | - Yaoxian Li
- College of Chemistry
- Jilin University
- Changchun 130021
- P. R. China
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41
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Wu MJ, Tseng WL. Rapid, facile, reagentless, and room-temperature conjugation of monolayer MoS2 nanosheets with dual-fluorophore-labeled flares as nanoprobes for ratiometric sensing of TK1 mRNA in living cells. J Mater Chem B 2020; 8:1692-1698. [DOI: 10.1039/c9tb02770j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Surface functionalization of MoS2 nanosheets with FRET-based flares was conducted for ratiometric sensing and imaging of TK1 mRNA in HeLa and MCF-7 cells.
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Affiliation(s)
- Man-Jyun Wu
- Department of Chemistry
- National Sun Yat-sen University
- Kaohsiung 80424
- Taiwan
| | - Wei-Lung Tseng
- Department of Chemistry
- National Sun Yat-sen University
- Kaohsiung 80424
- Taiwan
- School of Pharmacy
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42
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Li J, Cai S, Zhou B, Meng X, Guo Q, Yang X, Huang J, Wang K. Photocaged FRET nanoflares for intracellular microRNA imaging. Chem Commun (Camb) 2020; 56:6126-6129. [DOI: 10.1039/d0cc02395g] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Herein, we developed photocaged FRET nanoflares for spatiotemporal microRNA imaging in living cells. In other words, the probes will not work until they are exposed to UV light.
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Affiliation(s)
- Jing Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- College of Biology
- Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province
- Hunan University
| | - Shijun Cai
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- College of Biology
- Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province
- Hunan University
| | - Bing Zhou
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- College of Biology
- Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province
- Hunan University
| | - Xiangxian Meng
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- College of Biology
- Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province
- Hunan University
| | - Qiuping Guo
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- College of Biology
- Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province
- Hunan University
| | - Xiaohai Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- College of Biology
- Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province
- Hunan University
| | - Jin Huang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- College of Biology
- Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province
- Hunan University
| | - Kemin Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- College of Biology
- Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province
- Hunan University
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43
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Bagheri S, TermehYousefi A, Mehrmashhadi J. Carbon dot-based fluorometric optical sensors: an overview. REV INORG CHEM 2019. [DOI: 10.1515/revic-2019-0002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
AbstractFluorescent carbon dots (CDs) are a new class of carbon nanomaterials and have demonstrated excellent optical properties, good biocompatibility, great aqueous solubility, low cost, and simple synthesis. Since their discovery, various synthesis methods using different precursors were developed, which were mainly classified as top-down and bottom-up approaches. CDs have presented many applications, and this review article mainly focuses on the development of CD-based fluorescent sensors. The sensing mechanisms, sensor design, and sensing properties to various targets are summarized. Broad ranges of detection, including temperature, pH, DNA, antibiotics, cations, cancer cells, and antibiotics, have been discussed. In addition, the challenges and future directions for CDs as sensing materials are also presented.
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Affiliation(s)
- Samira Bagheri
- Department of Mechanical Engineering, Tufts University, Medford, MA 02155, USA
| | - Amin TermehYousefi
- Department of Mechanical Engineering, Tufts University, Medford, MA 02155, USA
| | - Javad Mehrmashhadi
- Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
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Zhu C, Yang J, Zheng J, Chen S, Huang F, Yang R. Triplex-Functionalized DNA Tetrahedral Nanoprobe for Imaging of Intracellular pH and Tumor-Related Messenger RNA. Anal Chem 2019; 91:15599-15607. [DOI: 10.1021/acs.analchem.9b03659] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Cong Zhu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Jinfeng Yang
- Hunan Cancer Hospital/the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410083, China
| | - Jing Zheng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Shiya Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Fujian Huang
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Ronghua Yang
- School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410076, China
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He S, Yu J, Wang F, Tian L. Well-Optimized Conjugated GO-DNA Nanosystem for Sensitive Ratiometric pH Detection in Live Cells. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:13745-13752. [PMID: 31584825 DOI: 10.1021/acs.langmuir.9b02417] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Intracellular pH is a vital parameter which can reflect the physiological process, and the detection of intracellular pH with a high signal-to-noise ratio (SNR) remains a challenge. Compared to pH biosensors based on a single-wavelength signal, it is much easier to obtain better sensitivity and higher SNR from the biosensors by two-wavelength ratiometric signals. In this study, we used DNA-grafted graphene oxide (GO) to ratiometrically detect intracellular pH ranging from basic to acidic. A high SNR with a 35-fold difference in the ratiometric output has been achieved through careful optimization: (1) A high DNA conjugation yield of 45% has been gained through utilizing the partial double-stranded assembly strategy. (2) Herring sperm DNA (HSD) plays an important role in improving the sensitivity of the nanosystem by purifying and passivating the surface of GO; therefore, the concentration of HSD has been optimized to pursue the most sensitive ratiometric response. Apart from the ultrahigh SNR, fabricated GO-AR-Cy5/IFO-Cy3 exhibited excellent stability and biocompatibility in biological environments. Further experiments demonstrated that the nanosystem worked well in live cells in response to pH changes. It is possible to distinguish small pH differences and realize quantitative detection based on ratiometric fluorescence imaging by laser scanning confocal microscope analysis, which makes the nanosystem a promising candidate for further biological study and clinical applications.
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Affiliation(s)
- Sihui He
- Department of Materials Science and Engineering , Southern University of Science and Technology , 1088 Xueyuan Boulevard , Nanshan District, Shenzhen , Guangdong 518055 , P. R. China
- College of Chemistry and Life Science , Zhejiang Normal University , Jinhua 321004 , P. R. China
| | - Jiantao Yu
- Department of Materials Science and Engineering , Southern University of Science and Technology , 1088 Xueyuan Boulevard , Nanshan District, Shenzhen , Guangdong 518055 , P. R. China
| | - Fangfang Wang
- College of Chemistry and Life Science , Zhejiang Normal University , Jinhua 321004 , P. R. China
| | - Leilei Tian
- Department of Materials Science and Engineering , Southern University of Science and Technology , 1088 Xueyuan Boulevard , Nanshan District, Shenzhen , Guangdong 518055 , P. R. China
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Ma W, Chen B, Zou S, Jia R, Cheng H, Huang J, Wang H, He X, Wang K. I-Motif-Based in Situ Bipedal Hybridization Chain Reaction for Specific Activatable Imaging and Enhanced Delivery of Antisense Oligonucleotides. Anal Chem 2019; 91:12538-12545. [PMID: 31476869 DOI: 10.1021/acs.analchem.9b03420] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The efficient and precise delivery of antisense oligonucleotides (ASOs) to target cells is of great value in gene silencing. However, the specificity and packaging capacity of delivery system still remains challenging. Here, we designed an i-motif forming-initiated in situ bipedal hybridization chain reaction (pH-Apt-BiHCR) amplification strategy for specific target cells imaging and enhanced gene delivery of ASOs. As a proof of concept, an 8-nt ASO modified with locked nucleic acid (LNA) which is complementary to the seed region of microRNA21 (miR-21) was used for gene silencing studies. Benefiting from the design of hairpin-contained i-motif, the stimuli-responsive assembly of pH-Apt-BiHCR was successfully achieved on MCF-7 cells surface based on the specific recognition of aptamer. Using this strategy, the pH-Apt-BiHCR not only contains repeated fluorescence resonance energy transfer (FRET) units for activatable tumor imaging with high contrast but also arrays with plenty of LNA ASOs as interference molecules for cancer cells inhibition. An in vitro assay showed that this strategy presented an excellent response ability in buffer within a narrow pH range (6.0-7.0) with a transition midpoint (pHT) of 6.44 ± 0.06. Moreover, live cell studies revealed that it realized a specific activatable imaging of target cells, while the ASOs arrayed pH-Apt-BiHCR exhibited improved internalization via an endocytosis pathway and enhanced gene silencing to MCF-7 cells compared to single ASO alone. We believe that this design will inspire the development of novel probes for early diagnosis and therapy of cancer cells.
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Affiliation(s)
- Wenjie Ma
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Hunan University , Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province , Changsha 410082 , China
| | - Biao Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Hunan University , Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province , Changsha 410082 , China
| | - Shanzi Zou
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Hunan University , Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province , Changsha 410082 , China
| | - Ruichen Jia
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Hunan University , Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province , Changsha 410082 , China
| | - Hong Cheng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Hunan University , Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province , Changsha 410082 , China
| | - Jin Huang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Hunan University , Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province , Changsha 410082 , China
| | - Huizhen Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Hunan University , Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province , Changsha 410082 , China
| | - Xiaoxiao He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Hunan University , Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province , Changsha 410082 , China
| | - Kemin Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Hunan University , Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province , Changsha 410082 , China
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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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48
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Zhou YJ, Wan YH, Nie CP, Zhang J, Chen TT, Chu X. Molecular Switching of a Self-Assembled 3D DNA Nanomachine for Spatiotemporal pH Mapping in Living Cells. Anal Chem 2019; 91:10366-10370. [DOI: 10.1021/acs.analchem.9b02514] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yu-Jie Zhou
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Yuan-Hui Wan
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Cun-Peng Nie
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Juan Zhang
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Ting-Ting Chen
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Xia Chu
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
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49
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Fluorometric determination of the p53 cancer gene using strand displacement amplification on gold nanoparticles. Mikrochim Acta 2019; 186:517. [DOI: 10.1007/s00604-019-3609-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 06/13/2019] [Indexed: 12/21/2022]
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50
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Abou Assi H, Garavís M, González C, Damha MJ. i-Motif DNA: structural features and significance to cell biology. Nucleic Acids Res 2019; 46:8038-8056. [PMID: 30124962 PMCID: PMC6144788 DOI: 10.1093/nar/gky735] [Citation(s) in RCA: 242] [Impact Index Per Article: 48.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 08/13/2018] [Indexed: 12/20/2022] Open
Abstract
The i-motif represents a paradigmatic example of the wide structural versatility of nucleic acids. In remarkable contrast to duplex DNA, i-motifs are four-stranded DNA structures held together by hemi- protonated and intercalated cytosine base pairs (C:C+). First observed 25 years ago, and considered by many as a mere structural oddity, interest in and discussion on the biological role of i-motifs have grown dramatically in recent years. In this review we focus on structural aspects of i-motif formation, the factors leading to its stabilization and recent studies describing the possible role of i-motifs in fundamental biological processes.
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Affiliation(s)
- Hala Abou Assi
- Department of Chemistry, McGill University, Montreal, QC H3A 0B8, Canada
| | - Miguel Garavís
- Instituto de Química Física 'Rocasolano', CSIC, C/Serrano 119, 28006 Madrid, Spain
| | - Carlos González
- Instituto de Química Física 'Rocasolano', CSIC, C/Serrano 119, 28006 Madrid, Spain
| | - Masad J Damha
- Department of Chemistry, McGill University, Montreal, QC H3A 0B8, Canada
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