1
|
Wang S, Gai L, Chen Y, Ji X, Lu H, Guo Z. Mitochondria-targeted BODIPY dyes for small molecule recognition, bio-imaging and photodynamic therapy. Chem Soc Rev 2024; 53:3976-4019. [PMID: 38450547 DOI: 10.1039/d3cs00456b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Mitochondria are essential for a diverse array of biological functions. There is increasing research focus on developing efficient tools for mitochondria-targeted detection and treatment. BODIPY dyes, known for their structural versatility and excellent spectroscopic properties, are being actively explored in this context. Numerous studies have focused on developing innovative BODIPYs that utilize optical signals for imaging mitochondria. This review presents a comprehensive overview of the progress made in this field, aiming to investigate mitochondria-related biological events. It covers key factors such as design strategies, spectroscopic properties, and cytotoxicity, as well as mechanism to facilitate their future application in organelle imaging and targeted therapy. This work is anticipated to provide valuable insights for guiding future development and facilitating further investigation into mitochondria-related biological sensing and phototherapy.
Collapse
Affiliation(s)
- Sisi Wang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, and Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou, 311121, China.
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Lizhi Gai
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, and Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou, 311121, China.
| | - Yuncong Chen
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.
| | - Xiaobo Ji
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Hua Lu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, and Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou, 311121, China.
| | - Zijian Guo
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.
| |
Collapse
|
2
|
Peng F, Ai X, Sun J, Yang L, Gao B. Recent advances in FRET probes for mitochondrial imaging and sensing. Chem Commun (Camb) 2024; 60:2994-3007. [PMID: 38381520 DOI: 10.1039/d4cc00018h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Mitochondria, as essential organelles in cells, play a crucial role in cellular growth and apoptosis. Monitoring mitochondria is of great importance, as mitochondrial dysfunction is often considered a hallmark event of cell apoptosis. Traditional fluorescence probes used for mitochondrial imaging and sensing are mostly intensity-based and are susceptible to factors such as concentration, the probe environment, and fluorescence intensity. Probes based on fluorescence resonance energy transfer (FRET) can effectively overcome external interference and achieve high-contrast imaging of mitochondria as well as quantitative monitoring of mitochondrial microenvironments. This review focuses on recent advances in the application of FRET-based probes for mitochondrial structure imaging and microenvironment sensing.
Collapse
Affiliation(s)
- Fei Peng
- College of Chemistry and Materials Science, Hebei University, Baoding, 071002, China.
| | - Xiangnan Ai
- College of Chemistry and Materials Science, Hebei University, Baoding, 071002, China.
| | - Jing Sun
- College of Chemistry and Materials Science, Hebei University, Baoding, 071002, China.
| | - Linshuai Yang
- College of Chemistry and Materials Science, Hebei University, Baoding, 071002, China.
| | - Baoxiang Gao
- College of Chemistry and Materials Science, Hebei University, Baoding, 071002, China.
- Key Laboratory of Analytical Science and Technology of Hebei Province, Hebei University, Baoding 071002, Hebei, China
| |
Collapse
|
3
|
Sanchez C, Ramirez A, Hodgson L. Unravelling molecular dynamics in living cells: Fluorescent protein biosensors for cell biology. J Microsc 2024. [PMID: 38357769 PMCID: PMC11324865 DOI: 10.1111/jmi.13270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 01/11/2024] [Accepted: 01/22/2024] [Indexed: 02/16/2024]
Abstract
Genetically encoded, fluorescent protein (FP)-based Förster resonance energy transfer (FRET) biosensors are microscopy imaging tools tailored for the precise monitoring and detection of molecular dynamics within subcellular microenvironments. They are characterised by their ability to provide an outstanding combination of spatial and temporal resolutions in live-cell microscopy. In this review, we begin by tracing back on the historical development of genetically encoded FP labelling for detection in live cells, which lead us to the development of early biosensors and finally to the engineering of single-chain FRET-based biosensors that have become the state-of-the-art today. Ultimately, this review delves into the fundamental principles of FRET and the design strategies underpinning FRET-based biosensors, discusses their diverse applications and addresses the distinct challenges associated with their implementation. We place particular emphasis on single-chain FRET biosensors for the Rho family of guanosine triphosphate hydrolases (GTPases), pointing to their historical role in driving our understanding of the molecular dynamics of this important class of signalling proteins and revealing the intricate relationships and regulatory mechanisms that comprise Rho GTPase biology in living cells.
Collapse
Affiliation(s)
- Colline Sanchez
- Gruss-Lipper Biophotonics Center, Albert Einstein College of Medicine, Bronx, New York, USA
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Andrea Ramirez
- Gruss-Lipper Biophotonics Center, Albert Einstein College of Medicine, Bronx, New York, USA
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Louis Hodgson
- Gruss-Lipper Biophotonics Center, Albert Einstein College of Medicine, Bronx, New York, USA
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York, USA
| |
Collapse
|
4
|
Kumar GD, Banasiewicz M, Wrzosek A, Kampa RP, Bousquet MHE, Kusy D, Jacquemin D, Szewczyk A, Gryko DT. Probing the flux of mitochondrial potassium using an azacrown-diketopyrrolopyrrole based highly sensitive probe. Chem Commun (Camb) 2022; 58:4500-4503. [PMID: 35302138 DOI: 10.1039/d2cc00324d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The diketopyrrolopyrrole bearing an aza-18-crown-6 as a binding unit as well as a PPh3+ group is highly sensitive towards K+ and localizes selectively in mitochondria of cardiac H9C2 cells. Fast efflux/influx of mitochondrial K+ can be observed upon stimulation with nigericin.
Collapse
Affiliation(s)
- G Dinesh Kumar
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - Marzena Banasiewicz
- Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
| | - Antoni Wrzosek
- Nencki Institute of Experimental Biology of Polish Academy of Sciences, Pasteur 3, 02-093 Warsaw, Poland.
| | - Rafal P Kampa
- Nencki Institute of Experimental Biology of Polish Academy of Sciences, Pasteur 3, 02-093 Warsaw, Poland.
| | | | - Damian Kusy
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - Denis Jacquemin
- University of Nantes, CNRS, CEISAM, UMR-6230, F-4400 Nantes, France.
| | - Adam Szewczyk
- Nencki Institute of Experimental Biology of Polish Academy of Sciences, Pasteur 3, 02-093 Warsaw, Poland.
| | - Daniel T Gryko
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| |
Collapse
|
5
|
Methods of Measuring Mitochondrial Potassium Channels: A Critical Assessment. Int J Mol Sci 2022; 23:ijms23031210. [PMID: 35163132 PMCID: PMC8835872 DOI: 10.3390/ijms23031210] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 01/19/2022] [Accepted: 01/20/2022] [Indexed: 12/22/2022] Open
Abstract
In this paper, the techniques used to study the function of mitochondrial potassium channels are critically reviewed. The majority of these techniques have been known for many years as a result of research on plasma membrane ion channels. Hence, in this review, we focus on the critical evaluation of techniques used in the studies of mitochondrial potassium channels, describing their advantages and limitations. Functional analysis of mitochondrial potassium channels in comparison to that of plasmalemmal channels presents additional experimental challenges. The reliability of functional studies of mitochondrial potassium channels is often affected by the need to isolate mitochondria and by functional properties of mitochondria such as respiration, metabolic activity, swelling capacity, or high electrical potential. Three types of techniques are critically evaluated: electrophysiological techniques, potassium flux measurements, and biochemical techniques related to potassium flux measurements. Finally, new possible approaches to the study of the function of mitochondrial potassium channels are presented. We hope that this review will assist researchers in selecting reliable methods for studying, e.g., the effects of drugs on mitochondrial potassium channel function. Additionally, this review should aid in the critical evaluation of the results reported in various articles on mitochondrial potassium channels.
Collapse
|
6
|
|
7
|
Chen XC, Tang GX, Luo WH, Shao W, Dai J, Zeng ST, Huang ZS, Chen SB, Tan JH. Monitoring and Modulating mtDNA G-Quadruplex Dynamics Reveal Its Close Relationship to Cell Glycolysis. J Am Chem Soc 2021; 143:20779-20791. [PMID: 34865478 DOI: 10.1021/jacs.1c08860] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The mitochondrial DNA G-quadruplex (mtDNA G4) is a potential regulatory element for the regulation of mitochondrial functions; however, its relevance and specific roles in diseases remain largely unknown. Here, we engineered a set of chemical probes, including MitoISCH, an mtDNA G4-specific fluorescent probe, together with MitoPDS, a mitochondria-targeted G4-stabilizing agent, to thoroughly investigate mtDNA G4s. Using MitoISCH to monitor previously intractable dynamics of mtDNA G4s, we surprisingly found that their formation was prevalent only in endothelial and cancer cells that rely on glycolysis for energy production. Consistent with this, promotion of mtDNA G4 folding by MitoPDS in turn caused glycolysis-related gene activation and glycolysis enhancement. Remarkably, this close relationship among mtDNA G4s, glycolysis, and cancer cells further allowed MitoISCH to accumulate in tumors and label them in vivo. Our work reveals an unprecedented link between mtDNA G4s and cell glycolysis, suggesting that mtDNA G4s may be a novel cancer biomarker and therapeutic target deserving further exploration.
Collapse
Affiliation(s)
- Xiu-Cai Chen
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Gui-Xue Tang
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Wen-Hua Luo
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Wen Shao
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Jing Dai
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Shu-Tang Zeng
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Zhi-Shu Huang
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Shuo-Bin Chen
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Jia-Heng Tan
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| |
Collapse
|
8
|
Abstract
Artificial receptors able to recognise biologically relevant molecules or ions have gained interest in the chemical community because they offer a plethora of posibilities. Molecular cage compounds are polycyclic compounds with a cavity designed for the encapsulation of guest species. Once inside the host cavity, the substrate can be transported through membranes and protected from the action of enzymes or other reactive species, thus offering the possibility of interfering with biological systems. Commonly, enzymes have been an inspiration for chemists in the search and design of defined cavities for different purposes. However, the chemical preparation of molecular cages has struggled with many synthetic challenges but this effort is worthwhile as they are a very promising tool for many applications ranging from sensing, delivery, purification or even promotion of/prevention from chemical modifications. Since the early reports at the end of the 60s, this field has experienced a growing interest; this review summarises the progress in the preparation and study of cage-like compounds highlighting their importance in biological applications.
Collapse
Affiliation(s)
- Lucía Tapia
- Department of Biological Chemistry, Institute for Advanced Chemistry of Catalonia, IQAC-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain.
| | - Ignacio Alfonso
- Department of Biological Chemistry, Institute for Advanced Chemistry of Catalonia, IQAC-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain.
| | - Jordi Solà
- Department of Biological Chemistry, Institute for Advanced Chemistry of Catalonia, IQAC-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain.
| |
Collapse
|
9
|
Ji W, Tang X, Du W, Lu Y, Wang N, Wu Q, Wei W, Liu J, Yu H, Ma B, Li L, Huang W. Optical/electrochemical methods for detecting mitochondrial energy metabolism. Chem Soc Rev 2021; 51:71-127. [PMID: 34792041 DOI: 10.1039/d0cs01610a] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This review highlights the biological importance of mitochondrial energy metabolism and the applications of multiple optical/electrochemical approaches to determine energy metabolites. Mitochondria, the main sites of oxidative phosphorylation and adenosine triphosphate (ATP) biosynthesis, provide the majority of energy required by aerobic cells for maintaining their physiological activity. They also participate in cell growth, differentiation, information transmission, and apoptosis. Multiple mitochondrial diseases, caused by internal or external factors, including oxidative stress, intense fluctuations of the ionic concentration, abnormal oxidative phosphorylation, changes in electron transport chain complex enzymes and mutations in mitochondrial DNA, can occur during mitochondrial energy metabolism. Therefore, developing accurate, sensitive, and specific methods for the in vivo and in vitro detection of mitochondrial energy metabolites is of great importance. In this review, we summarise the mitochondrial structure, functions, and crucial energy metabolic signalling pathways. The mechanism and applications of different optical/electrochemical methods are thoroughly reviewed. Finally, future research directions and challenges are proposed.
Collapse
Affiliation(s)
- Wenhui Ji
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China.
| | - Xiao Tang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China.
| | - Wei Du
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China.
| | - Yao Lu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China.
| | - Nanxiang Wang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China.
| | - Qiong Wu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China.
| | - Wei Wei
- Department of General Surgery, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing 210009, China
| | - Jie Liu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China.
| | - Haidong Yu
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
| | - Bo Ma
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211800, China
| | - Lin Li
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China. .,Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China.,The Institute of Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen 361005, China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China. .,Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China.,The Institute of Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen 361005, China
| |
Collapse
|
10
|
Pan T, Shen M, Shi J, Ning J, Su F, Liao J, Tian Y. Intracellular potassium ion fluorescent nanoprobes for functional analysis of hERG channel via bioimaging. SENSORS AND ACTUATORS B: CHEMICAL 2021; 345:130450. [DOI: 10.1016/j.snb.2021.130450] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
|
11
|
Chen Y, Wei M, Lee J, Zhao J, Lin P, Wang Q, Li F, Ling D. Neurodegenerative Disease Diagnosis via Ion‐Level Detection in the Brain. ADVANCED NANOBIOMED RESEARCH 2021. [DOI: 10.1002/anbr.202100007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Ying Chen
- Institute of Pharmaceutics College of Pharmaceutical Sciences Zhejiang University Hangzhou Zhejiang 310058 P.R. China
| | - Min Wei
- Institute of Pharmaceutics College of Pharmaceutical Sciences Zhejiang University Hangzhou Zhejiang 310058 P.R. China
| | - Jiyoung Lee
- Institute of Pharmaceutics College of Pharmaceutical Sciences Zhejiang University Hangzhou Zhejiang 310058 P.R. China
| | - Jing Zhao
- Institute of Pharmaceutics College of Pharmaceutical Sciences Zhejiang University Hangzhou Zhejiang 310058 P.R. China
| | - Peihua Lin
- Institute of Pharmaceutics College of Pharmaceutical Sciences Zhejiang University Hangzhou Zhejiang 310058 P.R. China
| | - Qiyue Wang
- Institute of Pharmaceutics College of Pharmaceutical Sciences Zhejiang University Hangzhou Zhejiang 310058 P.R. China
| | - Fangyuan Li
- Institute of Pharmaceutics College of Pharmaceutical Sciences Zhejiang University Hangzhou Zhejiang 310058 P.R. China
- Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou Zhejiang 310058 P.R. China
- Key Laboratory of Biomedical Engineering of the Ministry of Education College of Biomedical Engineering & Instrument Science Zhejiang University Hangzhou Zhejiang 310058 P.R. China
| | - Daishun Ling
- Institute of Pharmaceutics College of Pharmaceutical Sciences Zhejiang University Hangzhou Zhejiang 310058 P.R. China
- Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou Zhejiang 310058 P.R. China
- Key Laboratory of Biomedical Engineering of the Ministry of Education College of Biomedical Engineering & Instrument Science Zhejiang University Hangzhou Zhejiang 310058 P.R. China
- School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules Institute of Translational Medicine Shanghai Jiao Tong University Shanghai 200240 P.R. China
| |
Collapse
|
12
|
Cheng Y, Cheng M, Hao J, Miao W, Zhou W, Jia G, Li C. Highly Selective Detection of K + Based on a Dimerized G-Quadruplex DNAzyme. Anal Chem 2021; 93:6907-6912. [PMID: 33929188 DOI: 10.1021/acs.analchem.1c00872] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Potassium ion (K+) plays a crucial role in biological systems, such as maintaining cellular processes and causing diseases. However, specifically, the detection of K+ is extremely challenging because of the coexistence of the chemically similar ion of Na+ under physiological conditions. In this work, a K+ specific biosensor is constructed on the basis of a dimerized G-quadruplex (GQ) DNA, which is promoted by K+, and the enzymatic activity of the resulting DNAzyme depends on the concentration of the K+. The K+ in a 1-200 mM concentration range can be selectively detected by visual color, UV-Vis absorbance or fluorescence even if the concentration of the accompanying Na+ is up to 140 mM at an ambient condition up to 45 °C. In addition, this system can also be used to selectively detect NH4+ in a 5-200 mM concentration range. This dimerized DNAzyme offers a new type of biosensor with a potential application in the biological system.
Collapse
Affiliation(s)
- Yu Cheng
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China.,University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Mingpan Cheng
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China
| | - Jingya Hao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China.,University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Wenhui Miao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China.,University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Wenqin Zhou
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China.,University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Guoqing Jia
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China
| | - Can Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China
| |
Collapse
|
13
|
Qiao M, Ding L, Lv F. Surfactant assemblies encapsulating fluorescent probes as selective and discriminative sensors for metal ions. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213696] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
14
|
Yang J, Zhang R, Zhao Y, Tian J, Wang S, Gros CP, Xu H. Red/NIR neutral BODIPY-based fluorescent probes for lighting up mitochondria. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 248:119199. [PMID: 33293228 DOI: 10.1016/j.saa.2020.119199] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 10/29/2020] [Accepted: 11/05/2020] [Indexed: 06/12/2023]
Abstract
Two mitochondrial-targeted fluorescent probes, 2 and 3, based on a BODIPY scaffold and one or two piperidinyl groups were easily synthesized by Knoevenagel condensation. The biological imaging applications of the two probes 2 and 3 in live HepG2 cells reveal that these two probes display excellent mitochondrial imaging ability. Thus, these probes appear as promising tools for visualization of mitochondrial within live cells.
Collapse
Affiliation(s)
- Jian Yang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Ran Zhang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Yue Zhao
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Jiangwei Tian
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China.
| | - Shifa Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Claude P Gros
- ICMUB (UMR CNRS 6302), Université Bourgogne Franche-Comté, 21000 Dijon, France.
| | - Haijun Xu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.
| |
Collapse
|
15
|
Kumar GD, Banasiewicz M, Jacquemin D, Gryko DT. Switch-On Diketopyrrolopyrrole-Based Chemosensors for Cations Possessing Lewis Acid Character. Chem Asian J 2021; 16:355-362. [PMID: 33434391 DOI: 10.1002/asia.202001376] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 01/09/2021] [Indexed: 12/17/2022]
Abstract
For the first time diketopyrrolopyrroles (DPPs) have been synthesized directly from nitriles possessing (aza)crown ethers leading to macrocycle-dye hybrids. Depending on the nature of the linkage between DPP and macrocyclic ring, various coordination effects are found. The strong interaction of the cations possessing Lewis acid character such as Li+ , Mg2+ and Zn2+ with 2-aminopyridin-4-yl-DPPs, leading to a bathochromic shift of both emission and absorption, as well as to strong enhancement of fluorescence was rationalized in terms of strong binding of these cations to the N=C-NR2 functionality. The same effect has been observed for protonation. Depending on the size and the structure of the macrocyclic ring the complexation of cations by aza-crown ethers plays an important but secondary role. The interaction of Na+ and K+ with 2-aminopyridin-4-yl-DPPs leads to moderate enhancement of fluorescence due to the aza-crown ethers binding. The very weak fluorescence of DPP bearing 2-dialkylamino-pyridine-4-yl substituents is due to the closely lying T2 state and the resulting intersystem crossing.
Collapse
Affiliation(s)
- G Dinesh Kumar
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Marzena Banasiewicz
- Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668, Warsaw, Poland
| | - Denis Jacquemin
- CEISAM UMR 6230, CNRS, Université de Nantes, 44000, Nantes, France
| | - Daniel T Gryko
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| |
Collapse
|
16
|
Freese T, Patalag LJ, Merz JL, Jones PG, Werz DB. One-Pot Strategy for Symmetrical and Unsymmetrical BOIMPY Fluorophores. J Org Chem 2021; 86:3089-3095. [DOI: 10.1021/acs.joc.0c02860] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Tyll Freese
- Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106 Braunschweig, Germany
| | - Lukas J. Patalag
- Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106 Braunschweig, Germany
| | - J. Luca Merz
- Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106 Braunschweig, Germany
| | - Peter G. Jones
- Technische Universität Braunschweig, Institute of Inorganic and Analytical Chemistry, Hagenring 30, 38106 Braunschweig, Germany
| | - Daniel B. Werz
- Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106 Braunschweig, Germany
| |
Collapse
|
17
|
Savage JC, Shinde P, Yao Y, Davare MA, Shinde U. A Broccoli aptamer chimera yields a fluorescent K + sensor spanning physiological concentrations. Chem Commun (Camb) 2021; 57:1344-1347. [PMID: 33432937 DOI: 10.1039/d0cc07042d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The RNA aptamer Broccoli accepts 2'fluorinated (2'F) pyrimidine nucleotide incorporation without perturbation of structure or fluorescence in the presence of potassium and DFHBI. However, the modification decreases Broccoli's apparent affinity for K+ >30-fold. A chimera of Broccoli RNAs with mixed chemistries displays linear fluorescent gain spanning physiological K+ concentrations, yielding an effective RNA-based fluorescent K+ sensor.
Collapse
Affiliation(s)
- Jonathan C Savage
- Department of Chemical Physiology & Biochemistry, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA.
| | | | | | | | | |
Collapse
|
18
|
|
19
|
Sambath K, Liu X, Wan Z, Hutnik L, Belfield KD, Zhang Y. Potassium Ion Fluorescence Probes: Structures, Properties and Bioimaging. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.202000236] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Karthik Sambath
- Department of Chemistry and Environmental Science College of Science and Liberal Arts New Jersey Institute of Technology 323 Martin Luther King Jr. Blvd. Newark NJ 07102 USA
| | - Xiangshan Liu
- Department of Chemistry and Environmental Science College of Science and Liberal Arts New Jersey Institute of Technology 323 Martin Luther King Jr. Blvd. Newark NJ 07102 USA
| | - Zhaoxiong Wan
- Department of Chemistry and Environmental Science College of Science and Liberal Arts New Jersey Institute of Technology 323 Martin Luther King Jr. Blvd. Newark NJ 07102 USA
| | - Lauren Hutnik
- Department of Chemistry and Environmental Science College of Science and Liberal Arts New Jersey Institute of Technology 323 Martin Luther King Jr. Blvd. Newark NJ 07102 USA
| | - Kevin D. Belfield
- Department of Chemistry and Environmental Science College of Science and Liberal Arts New Jersey Institute of Technology 323 Martin Luther King Jr. Blvd. Newark NJ 07102 USA
| | - Yuanwei Zhang
- Department of Chemistry and Environmental Science College of Science and Liberal Arts New Jersey Institute of Technology 323 Martin Luther King Jr. Blvd. Newark NJ 07102 USA
| |
Collapse
|
20
|
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.
Collapse
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
| |
Collapse
|
21
|
Schwarze T, Riemer J. Highly K
+
Selective Probes with Fluorescence Emission Wavelengths Higher than 500 nm in Water. ChemistrySelect 2020. [DOI: 10.1002/slct.202003785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Thomas Schwarze
- Institut für Chemie, Anorganische Chemie Universität Potsdam Karl-Liebknecht-Str. 24–25 14476 Golm Germany
| | - Janine Riemer
- Institut für Chemie, Anorganische Chemie Universität Potsdam Karl-Liebknecht-Str. 24–25 14476 Golm Germany
| |
Collapse
|
22
|
Close Temporal Relationship between Oscillating Cytosolic K + and Growth in Root Hairs of Arabidopsis. Int J Mol Sci 2020; 21:ijms21176184. [PMID: 32867067 PMCID: PMC7504304 DOI: 10.3390/ijms21176184] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/17/2020] [Accepted: 08/21/2020] [Indexed: 02/06/2023] Open
Abstract
Root hair elongation relies on polarized cell expansion at the growing tip. As a major osmotically active ion, potassium is expected to be continuously assimilated to maintain cell turgor during hair tip growth. However, due to the lack of practicable detection methods, the dynamics and physiological role of K+ in hair growth are still unclear. In this report, we apply the small-molecule fluorescent K+ sensor NK3 in Arabidopsis root hairs for the first time. By employing NK3, oscillating cytoplasmic K+ dynamics can be resolved at the tip of growing root hairs, similar to the growth oscillation pattern. Cross-correlation analysis indicates that K+ oscillation leads the growth oscillations by approximately 1.5 s. Artificially increasing cytoplasmic K+ level showed no significant influence on hair growth rate, but led to the formation of swelling structures at the tip, an increase of cytosolic Ca2+ level and microfilament depolymerization, implying the involvement of antagonistic regulatory factors (e.g., Ca2+ signaling) in the causality between cytoplasmic K+ and hair growth. These results suggest that, in each round of oscillating root hair elongation, the oscillatory cell expansion accelerates on the heels of cytosolic K+ increment, and decelerates with the activation of antagonistic regulators, thus forming a negative feedback loop which ensures the normal growth of root hairs.
Collapse
|
23
|
Shen FF, Dai SY, Wong NK, Deng S, Wong AST, Yang D. Mediating K +/H + Transport on Organelle Membranes to Selectively Eradicate Cancer Stem Cells with a Small Molecule. J Am Chem Soc 2020; 142:10769-10779. [PMID: 32441923 DOI: 10.1021/jacs.0c02134] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Molecules that are capable of disrupting cellular ion homeostasis offer unique opportunities to treat cancer. However, previously reported synthetic ion transporters showed limited value, as promiscuous ionic disruption caused toxicity to both healthy cells and cancer cells indiscriminately. Here we report a simple yet efficient synthetic K+ transporter that takes advantage of the endogenous subcellular pH gradient and membrane potential to site-selectively mediate K+/H+ transport on the mitochondrial and lysosomal membranes in living cells. Consequent mitochondrial and lysosomal damages enhanced cytotoxicity to chemo-resistant ovarian cancer stem cells (CSCs) via apoptosis induction and autophagy suppression with remarkable selectivity (up to 47-fold). The eradication of CSCs blunted tumor formation in mice. We believe this strategy can be exploited in the structural design and applications of next-generation synthetic cation transporters for the treatment of cancer and other diseases related to dysfunctional K+ channels.
Collapse
Affiliation(s)
- Fang-Fang Shen
- Morningside Laboratory for Chemical Biology, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Sheng-Yao Dai
- Morningside Laboratory for Chemical Biology, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Nai-Kei Wong
- Morningside Laboratory for Chemical Biology, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China.,Department of Infectious Diseases, Shenzhen Third People's Hospital, The Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen 518112, China
| | - Shan Deng
- Morningside Laboratory for Chemical Biology, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China.,School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Alice Sze-Tsai Wong
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Dan Yang
- Morningside Laboratory for Chemical Biology, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| |
Collapse
|
24
|
Liu H, Ning J, Song G, Sun X, Su F, Li P, Tian Y. Tricolor dual sensor for ratiometrically analyzing potassium ions and dissolved oxygen. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 232:118155. [PMID: 32088531 DOI: 10.1016/j.saa.2020.118155] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/09/2020] [Accepted: 02/12/2020] [Indexed: 06/10/2023]
Abstract
A potassium ion‑oxygen (K+-O2) dual fluorescent sensing film was developed. The film contains three probes, which are K+ probe (KS), O2 probe (OS), and reference probe (RP) in a polymer film composed of poly(ethylene glycol) methyl ether methacrylate (PEGMA), poly(ethylene glycol) dimethacrylate (PEGDMA) and methacrylic acid (MAA). The RP showed blue emission, the KS exhibited green emission, and the OS showed red emission. The emission peaks of three probes do not interfere with each other, which enable the sensing film to be used for ratiometrically and quantitatively detecting the concentrations of K+ and dissolved oxygen (DO). The sensing films showed high sensitivity and selectivity to potassium ions over other metal ions and also good sensitivity for DO from deoxygenated to oxygenated conditions. The sensing film was demonstrated to be capable of analyzing K+ and DO concentrations with experimental errors smaller than ±8.5% in aqueous solutions, showing the potential applications of the sensing films.
Collapse
Affiliation(s)
- Hongtian Liu
- Department of Materials Science and Engineering, Southern University of Science and Technology, Xili, Nanshan District, Shenzhen 518055, China; School of Materials Science and Engineering, Harbin Institute of Technology, Nangang District, Harbin 150001, China
| | - Juewei Ning
- Department of Materials Science and Engineering, Southern University of Science and Technology, Xili, Nanshan District, Shenzhen 518055, China; School of Materials Science and Engineering, Harbin Institute of Technology, Nangang District, Harbin 150001, China
| | - Guangjie Song
- Department of Materials Science and Engineering, Southern University of Science and Technology, Xili, Nanshan District, Shenzhen 518055, China
| | - Xiangzhong Sun
- Department of Materials Science and Engineering, Southern University of Science and Technology, Xili, Nanshan District, Shenzhen 518055, China
| | - Fengyu Su
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Xili, Nanshan District, Shenzhen 518055, China.
| | - Pengfei Li
- Department of Chemistry, College of Science, Southern University of Science and Technology, Xili, Nanshan District, Shenzhen 518055, China.
| | - Yanqing Tian
- Department of Materials Science and Engineering, Southern University of Science and Technology, Xili, Nanshan District, Shenzhen 518055, China.
| |
Collapse
|
25
|
Liu J, Li F, Wang Y, Pan L, Lin P, Zhang B, Zheng Y, Xu Y, Liao H, Ko G, Fei F, Xu C, Du Y, Shin K, Kim D, Jang SS, Chung HJ, Tian H, Wang Q, Guo W, Nam JM, Chen Z, Hyeon T, Ling D. A sensitive and specific nanosensor for monitoring extracellular potassium levels in the brain. NATURE NANOTECHNOLOGY 2020; 15:321-330. [PMID: 32042163 DOI: 10.1038/s41565-020-0634-4] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 01/06/2020] [Indexed: 06/10/2023]
Abstract
Extracellular potassium concentration affects the membrane potential of neurons, and, thus, neuronal activity. Indeed, alterations of potassium levels can be related to neurological disorders, such as epilepsy and Alzheimer's disease, and, therefore, selectively detecting extracellular potassium would allow the monitoring of disease. However, currently available optical reporters are not capable of detecting small changes in potassium, in particular, in freely moving animals. Furthermore, they are susceptible to interference from sodium ions. Here, we report a highly sensitive and specific potassium nanosensor that can monitor potassium changes in the brain of freely moving mice undergoing epileptic seizures. An optical potassium indicator is embedded in mesoporous silica nanoparticles, which are shielded by an ultrathin layer of a potassium-permeable membrane, which prevents diffusion of other cations and allows the specific capturing of potassium ions. The shielded nanosensor enables the spatial mapping of potassium ion release in the hippocampus of freely moving mice.
Collapse
Affiliation(s)
- Jianan Liu
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, Republic of Korea
| | - Fangyuan Li
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
- Hangzhou Institute of Innovative Medicine, College of Pharmaceutical Science, Zhejiang University, Hangzhou, China
- Key Laboratory of Biomedical Engineering of the Ministry of Education, College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, China
| | - Yi Wang
- Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Department of Pharmacology, School of Medicine, Zhejiang University, Hangzhou, China
| | - Limin Pan
- Department of Chemistry, Seoul National University, Seoul, Republic of Korea
| | - Peihua Lin
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
- Hangzhou Institute of Innovative Medicine, College of Pharmaceutical Science, Zhejiang University, Hangzhou, China
| | - Bo Zhang
- Department of Chemistry, Zhejiang University, Hangzhou, China
| | - Yanrong Zheng
- Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Department of Pharmacology, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yingwei Xu
- Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Department of Pharmacology, School of Medicine, Zhejiang University, Hangzhou, China
| | - Hongwei Liao
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
- Hangzhou Institute of Innovative Medicine, College of Pharmaceutical Science, Zhejiang University, Hangzhou, China
| | - Giho Ko
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, Republic of Korea
| | - Fan Fei
- Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Department of Pharmacology, School of Medicine, Zhejiang University, Hangzhou, China
| | - Cenglin Xu
- Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Department of Pharmacology, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yang Du
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
- Hangzhou Institute of Innovative Medicine, College of Pharmaceutical Science, Zhejiang University, Hangzhou, China
| | - Kwangsoo Shin
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, Republic of Korea
| | - Dokyoon Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, Republic of Korea
- Department of Bionano Engineering and Bionanotechnology, Hanyang University, Ansan, Republic of Korea
| | - Sung-Soo Jang
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Hee Jung Chung
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - He Tian
- Center of Electron Microscope, State Key Laboratory of Silicon Material, School of Material Science and Engineering, Zhejiang University, Hangzhou, China
| | - Qi Wang
- Department of Chemistry, Zhejiang University, Hangzhou, China
| | - Wei Guo
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China
| | - Jwa-Min Nam
- Department of Chemistry, Seoul National University, Seoul, Republic of Korea
| | - Zhong Chen
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China.
- Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Department of Pharmacology, School of Medicine, Zhejiang University, Hangzhou, China.
| | - Taeghwan Hyeon
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, Republic of Korea.
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, Republic of Korea.
| | - Daishun Ling
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China.
- Hangzhou Institute of Innovative Medicine, College of Pharmaceutical Science, Zhejiang University, Hangzhou, China.
- Key Laboratory of Biomedical Engineering of the Ministry of Education, College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, China.
| |
Collapse
|
26
|
He Y, Fang X, Shi J, Li X, Xie M, Liu X. Apigenin attenuates pulmonary hypertension by inducing mitochondria-dependent apoptosis of PASMCs via inhibiting the hypoxia inducible factor 1α–KV1.5 channel pathway. Chem Biol Interact 2020; 317:108942. [DOI: 10.1016/j.cbi.2020.108942] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 12/06/2019] [Accepted: 01/08/2020] [Indexed: 01/10/2023]
|
27
|
Song G, Jiang D, Wang L, Ning J, Sun X, Su F, Chen M, Tian Y. A mitochondria-targeting NIR fluorescent potassium ion sensor: real-time investigation of the mitochondrial K+ regulation of apoptosis in situ. Chem Commun (Camb) 2020; 56:5405-5408. [DOI: 10.1039/d0cc00579g] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
TAC-Rh, as the first mitochondria-targeting NIR K+ sensor, was applied to explore mutual regulation between mitochondrial K+ and apoptosis.
Collapse
Affiliation(s)
- Guangjie Song
- Department of Materials Science and Engineering Southern University of Science and Technology
- Shenzhen
- China
- State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical Sciences
- University of Macau
| | - Di Jiang
- State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical Sciences
- University of Macau
- Macao 999078
- China
| | - Lei Wang
- Department of Materials Science and Engineering Southern University of Science and Technology
- Shenzhen
- China
| | - Juewei Ning
- Department of Materials Science and Engineering Southern University of Science and Technology
- Shenzhen
- China
| | - Xiangzhong Sun
- Department of Materials Science and Engineering Southern University of Science and Technology
- Shenzhen
- China
| | - Fengyu Su
- Academy for Advanced Interdisciplinary Studies Southern University of Science and Technology
- Shenzhen
- China
| | - Meiwan Chen
- State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical Sciences
- University of Macau
- Macao 999078
- China
| | - Yanqing Tian
- Department of Materials Science and Engineering Southern University of Science and Technology
- Shenzhen
- China
| |
Collapse
|
28
|
Wang S, Du Y, Zhang J, Chen G. Rod-like BODIPY nanomaterials with enhanced photodynamic activity. NEW J CHEM 2020. [DOI: 10.1039/d0nj01973a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Self-assembled nanorods are stable in aqueous solution and demonstrate better imaging and stronger PDT effects compared to spherical nanoparticles.
Collapse
Affiliation(s)
- Shuo Wang
- Department of Thyroid Surgery
- The First Hospital of Jilin University
- Changchun
- P. R. China
| | - Yechao Du
- Department of Thyroid Surgery
- The First Hospital of Jilin University
- Changchun
- P. R. China
| | - Jianxu Zhang
- Institute of Military Veterinary Medicine
- Academy of Military Medical Sciences
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control
- Changchun
- P. R. China
| | - Guang Chen
- Department of Thyroid Surgery
- The First Hospital of Jilin University
- Changchun
- P. R. China
| |
Collapse
|
29
|
Madreiter-Sokolowski CT, Ramadani-Muja J, Ziomek G, Burgstaller S, Bischof H, Koshenov Z, Gottschalk B, Malli R, Graier WF. Tracking intra- and inter-organelle signaling of mitochondria. FEBS J 2019; 286:4378-4401. [PMID: 31661602 PMCID: PMC6899612 DOI: 10.1111/febs.15103] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 08/19/2019] [Accepted: 10/22/2019] [Indexed: 12/15/2022]
Abstract
Mitochondria are as highly specialized organelles and masters of the cellular energy metabolism in a constant and dynamic interplay with their cellular environment, providing adenosine triphosphate, buffering Ca2+ and fundamentally contributing to various signaling pathways. Hence, such broad field of action within eukaryotic cells requires a high level of structural and functional adaptation. Therefore, mitochondria are constantly moving and undergoing fusion and fission processes, changing their shape and their interaction with other organelles. Moreover, mitochondrial activity gets fine-tuned by intra- and interorganelle H+ , K+ , Na+ , and Ca2+ signaling. In this review, we provide an up-to-date overview on mitochondrial strategies to adapt and respond to, as well as affect, their cellular environment. We also present cutting-edge technologies used to track and investigate subcellular signaling, essential to the understanding of various physiological and pathophysiological processes.
Collapse
Affiliation(s)
- Corina T Madreiter-Sokolowski
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Austria.,Department of Health Sciences and Technology, ETH Zurich, Schwerzenbach, Switzerland
| | - Jeta Ramadani-Muja
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Gabriela Ziomek
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Sandra Burgstaller
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Helmut Bischof
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Zhanat Koshenov
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Benjamin Gottschalk
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Roland Malli
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Austria.,BioTechMed, Graz, Austria
| | - Wolfgang F Graier
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Austria.,BioTechMed, Graz, Austria
| |
Collapse
|
30
|
Live cell imaging of signaling and metabolic activities. Pharmacol Ther 2019; 202:98-119. [DOI: 10.1016/j.pharmthera.2019.06.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 05/31/2019] [Indexed: 12/15/2022]
|
31
|
Lv F, Yu Y, Hao E, Yu C, Wang H, Boens N, Jiao L. Highly regioselective α-formylation and α-acylation of BODIPY dyes via tandem cross-dehydrogenative coupling with in situ deprotection. Org Biomol Chem 2019; 17:5121-5128. [PMID: 31073552 DOI: 10.1039/c9ob00927b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A metal-free C-H formylation and acylation of BODIPY dyes using a variety of dioxolane derivatives as aldehyde equivalents is reported, providing a postfunctionalization method for controllable synthesis of BODIPYs with carbonyl groups at 3,5-positions via a radical process. The photophysical properties of resultant dyes from this efficient one-pot, chemo- and site-selective transformation have been studied.
Collapse
Affiliation(s)
- Fan Lv
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, China.
| | - Yang Yu
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, China.
| | - Erhong Hao
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, China.
| | - Changjiang Yu
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, China.
| | - Hua Wang
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, China.
| | - Noёl Boens
- Department of Chemistry, KU Leuven (Katholieke Universiteit Leuven), Celestijnenlaan 200f, 3001 Leuven, Belgium.
| | - Lijuan Jiao
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, China.
| |
Collapse
|
32
|
Live-Cell Imaging of Physiologically Relevant Metal Ions Using Genetically Encoded FRET-Based Probes. Cells 2019; 8:cells8050492. [PMID: 31121936 PMCID: PMC6562680 DOI: 10.3390/cells8050492] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 05/17/2019] [Accepted: 05/21/2019] [Indexed: 01/02/2023] Open
Abstract
Essential biochemical reactions and processes within living organisms are coupled to subcellular fluctuations of metal ions. Disturbances in cellular metal ion homeostasis are frequently associated with pathological alterations, including neurotoxicity causing neurodegeneration, as well as metabolic disorders or cancer. Considering these important aspects of the cellular metal ion homeostasis in health and disease, measurements of subcellular ion signals are of broad scientific interest. The investigation of the cellular ion homeostasis using classical biochemical methods is quite difficult, often even not feasible or requires large cell numbers. Here, we report of genetically encoded fluorescent probes that enable the visualization of metal ion dynamics within individual living cells and their organelles with high temporal and spatial resolution. Generally, these probes consist of specific ion binding domains fused to fluorescent protein(s), altering their fluorescent properties upon ion binding. This review focuses on the functionality and potential of these genetically encoded fluorescent tools which enable monitoring (sub)cellular concentrations of alkali metals such as K+, alkaline earth metals including Mg2+ and Ca2+, and transition metals including Cu+/Cu2+ and Zn2+. Moreover, we discuss possible approaches for the development and application of novel metal ion biosensors for Fe2+/Fe3+, Mn2+ and Na+.
Collapse
|
33
|
Gao H, Liu H, Jiang L, Gai L, Shen Z. A near-infrared benzoquinone-coupled BODIPY: Synthesis, spectroscopic and electrochemical properties. J PORPHYR PHTHALOCYA 2019. [DOI: 10.1142/s1088424619500044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A near-infrared absorbing boron-dipyrromethene (BODIPY) chromophore coupled with two benzoquinone moieties at its 3,5-positions, 3, was prepared via Knoevenagel condensation of 1,3,5,7-tetramethyl-8-(4[Formula: see text]-benzonitrile) BODIPY 1 with 3,5-di-tert-butyl-4-hydroxybenzaldehyde to afford 1,7-dimethyl-3,5-di-(4[Formula: see text]-hydroxy-3[Formula: see text],5[Formula: see text]-di-tert-butyl styryl)-8-(4[Formula: see text]-benzonitrile) BODIPY 2, followed by oxidization with Ag2O in good yield (91%). The UV-vis-NIR absorption spectrum of 3 exhibits two major bands at 795 and 895 nm in the near-IR region, while 2shows maximum absorbance at 661 nm and strong fluorescence at 692 nm ([Formula: see text] 0.59). The cyclic voltammetry of 3 consists of two pairs of reversible one-electron reductions at -0.61 V and -0.88 V and two pairs of one-electron oxidation waves at 0.26 V and 0.54 V. Compared with the redox potentials of 2([Formula: see text] V and [Formula: see text] 0.25 V), the first reduction of 3 is anodically shifted for 710 mV, whereas the first oxidation potential is close. Theoretical calculation reveals that conjugation with the benzoquinone moieties on the BODIPY chromophore significantly lowers the LUMO energy level and the HOMO–LUMO energy gap, resulting in a dramatic bathochromic shift of the S0–S1 transition of 3 compared with that of 2. X-ray crystallographic analysis of 3 reveals that the whole molecule adopts a V-type twisted conformation along the delocalized [Formula: see text]-conjugated pathway.
Collapse
Affiliation(s)
- Hu Gao
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210046, China
| | - Hui Liu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210046, China
| | - Liang Jiang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210046, China
| | - Lizhi Gai
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210046, China
| | - Zhen Shen
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210046, China
| |
Collapse
|
34
|
Ni F, Zhu Z, Tong X, Zeng W, An K, Wei D, Gong S, Zhao Q, Zhou X, Yang C. Hydrophilic, Red-Emitting, and Thermally Activated Delayed Fluorescence Emitter for Time-Resolved Luminescence Imaging by Mitochondrion-Induced Aggregation in Living Cells. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1801729. [PMID: 30886801 PMCID: PMC6402405 DOI: 10.1002/advs.201801729] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 12/02/2018] [Indexed: 05/23/2023]
Abstract
Thermally activated delayed fluorescence (TADF) materials have provided new strategies for time-resolved luminescence imaging (TRLI); however, the development of hydrophilic TADF luminophores for specific imaging in cells remains a substantial challenge. In this study, a mitochondria-induced aggregation strategy for TRLI is proposed with the design and utilization of the hydrophilic TADF luminophore ((10-(1,3-dioxo-2-phenyl-2,3-dihydro-1H-benzo[de]isoquinolin-6-yl)-9,9-dimethyl-9,10-dihydroacridin-2-yl)methyl)triphenylphosphonium bromide (NID-TPP). Using a nonconjugated linker to introduce a triphenylphosphonium (TPP+) group into the 6-(9,9-dimethylacridin-10(9H)-yl)-2-phenyl-1H-benzo[de]isoquinoline-1,3(2H)-dione (NID) TADF luminophore preserves the TADF emission of NID-TPP. NID-TPP shows clear aggregation-induced delayed fluorescence enhancement behavior, which provides a practical strategy for long-lived delayed fluorescence emission in an oxygen-containing environment. Finally, the designed mitochondrion-targeting TPP+ group in NID-TPP induces the adequate accumulation of NID-TPP and results in the first reported TADF-based time-resolved luminescence imaging and two-photon imaging of mitochondria in living cells.
Collapse
Affiliation(s)
- Fan Ni
- Department of Chemistry and Hubei Key Lab on Organic and Polymeric Optoelectronic MaterialsWuhan UniversityWuhan430072China
- College of Materials Science and EngineeringShenzhen UniversityShenzhen518060China
| | - Zece Zhu
- Department of Chemistry and Hubei Key Lab on Organic and Polymeric Optoelectronic MaterialsWuhan UniversityWuhan430072China
- Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan430074China
| | - Xiao Tong
- Key Laboratory for Organic Electronics & Information Displays and Institute of Advanced MaterialsNanjing University of Posts and TelecommunicationsNanjing210023China
| | - Weixuan Zeng
- Department of Chemistry and Hubei Key Lab on Organic and Polymeric Optoelectronic MaterialsWuhan UniversityWuhan430072China
| | - Kebin An
- Department of Chemistry and Hubei Key Lab on Organic and Polymeric Optoelectronic MaterialsWuhan UniversityWuhan430072China
| | - Danqing Wei
- Department of Chemistry and Hubei Key Lab on Organic and Polymeric Optoelectronic MaterialsWuhan UniversityWuhan430072China
| | - Shaolong Gong
- Department of Chemistry and Hubei Key Lab on Organic and Polymeric Optoelectronic MaterialsWuhan UniversityWuhan430072China
| | - Qiang Zhao
- Key Laboratory for Organic Electronics & Information Displays and Institute of Advanced MaterialsNanjing University of Posts and TelecommunicationsNanjing210023China
| | - Xiang Zhou
- Department of Chemistry and Hubei Key Lab on Organic and Polymeric Optoelectronic MaterialsWuhan UniversityWuhan430072China
| | - Chuluo Yang
- Department of Chemistry and Hubei Key Lab on Organic and Polymeric Optoelectronic MaterialsWuhan UniversityWuhan430072China
- College of Materials Science and EngineeringShenzhen UniversityShenzhen518060China
| |
Collapse
|
35
|
Shen Y, Wu SY, Rancic V, Aggarwal A, Qian Y, Miyashita SI, Ballanyi K, Campbell RE, Dong M. Genetically encoded fluorescent indicators for imaging intracellular potassium ion concentration. Commun Biol 2019; 2:18. [PMID: 30652129 PMCID: PMC6331434 DOI: 10.1038/s42003-018-0269-2] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 12/17/2018] [Indexed: 11/13/2022] Open
Abstract
Potassium ion (K+) homeostasis and dynamics play critical roles in biological activities. Here we describe three genetically encoded K+ indicators. KIRIN1 (potassium (K) ion ratiometric indicator) and KIRIN1-GR are Förster resonance energy transfer (FRET)-based indicators with a bacterial K+ binding protein (Kbp) inserting between the fluorescent protein FRET pairs mCerulean3/cp173Venus and Clover/mRuby2, respectively. GINKO1 (green indicator of K+ for optical imaging) is a single fluorescent protein-based K+ indicator constructed by insertion of Kbp into enhanced green fluorescent protein (EGFP). These indicators are suitable for detecting K+ at physiologically relevant concentrations in vitro and in cells. KIRIN1 enabled imaging of cytosolic K+ depletion in live cells and K+ efflux and reuptake in cultured neurons. GINKO1, in conjunction with red fluorescent Ca2+ indicator, enable dual-color imaging of K+ and Ca2+ dynamics in neurons and glial cells. These results demonstrate that KIRIN1 and GINKO1 are useful tools for imaging intracellular K+ dynamics.
Collapse
Affiliation(s)
- Yi Shen
- Department of Urology, Boston Children’s Hospital, Department of Microbiology and Immunobiology, Department of Surgery, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115 USA
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2 Canada
| | - Sheng-Yi Wu
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2 Canada
| | - Vladimir Rancic
- Department of Physiology, University of Alberta, Edmonton, AB T6G 2H7 Canada
| | - Abhi Aggarwal
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2 Canada
| | - Yong Qian
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2 Canada
| | - Shin-Ichiro Miyashita
- Department of Urology, Boston Children’s Hospital, Department of Microbiology and Immunobiology, Department of Surgery, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115 USA
| | - Klaus Ballanyi
- Department of Physiology, University of Alberta, Edmonton, AB T6G 2H7 Canada
| | - Robert E. Campbell
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2 Canada
- Department of Chemistry, The University of Tokyo, Tokyo, 113-0033 Japan
| | - Min Dong
- Department of Urology, Boston Children’s Hospital, Department of Microbiology and Immunobiology, Department of Surgery, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115 USA
| |
Collapse
|
36
|
Liu H, Liu T, Li J, Zhang Y, Li J, Song J, Qu J, Wong WY. A simple Schiff base as dual-responsive fluorescent sensor for bioimaging recognition of Zn 2+ and Al 3+ in living cells. J Mater Chem B 2018; 6:5435-5442. [PMID: 32254602 DOI: 10.1039/c8tb01743c] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A simple Schiff base fluorescent sensor (BDNOL) was synthesized from the reaction of picolinohydrazide and 4-(diethylamino)salicylaldehyde, and developed for selective detection of Al3+ and Zn2+. This non-fluorescent sensor displayed obvious fluorescence enhancement after binding to Al3+/Zn2+ ions with high sensitivity and selectivity, accompanied by obvious fluorescence emission enhancement (504 nm for Al3+ and 575 nm for Zn2+). The detection limits were found to be 8.30 × 10-8 M for Al3+ and 1.24 × 10-7 M for Zn2+. The binding mechanisms between BDNOL and Al3+/Zn2+ ions were supported by 1H NMR and HR-MS analysis, and a density functional theory (DFT) study. The sensing behavior was also studied with molecular logic functions of OR, AND, and NOT gates. Furthermore, the fluorescent sensor was successfully used to recognize Al3+ and Zn2+ in living cells, suggesting that this simple biosensor has great potential in biological imaging applications.
Collapse
Affiliation(s)
- Haiyang Liu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, P. R. China.
| | | | | | | | | | | | | | | |
Collapse
|
37
|
Schwarze T, Riemer J, Holdt HJ. A Ratiometric Fluorescent Probe for K + in Water Based on a Phenylaza-18-Crown-6 Lariat Ether. Chemistry 2018; 24:10116-10121. [PMID: 29863303 DOI: 10.1002/chem.201802306] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Indexed: 01/24/2023]
Abstract
This work presents two molecular fluorescent probes 1 and 2 for the selective determination of physiologically relevant K+ levels in water based on a highly K+ /Na+ selective building block, the o-(2-methoxyethoxy)phenylaza-18-crown-6 lariat ether unit. Fluorescent probe 1 showed a high K+ -induced fluorescence enhancement (FE) by a factor of 7.7 of the anthracenic emission and a dissociation constant (Kd ) value of 38 mm in water. Further, for 2+K+ , we observed a dual emission behavior at 405 and 505 nm. K+ increases the fluorescence intensity of 2 at 405 nm by a factor of approximately 4.6 and K+ decreases the fluorescence intensity at 505 nm by a factor of about 4.8. Fluorescent probe 2+K+ exhibited a Kd value of approximately 8 mm in Na+ -free solutions and in combined K+ /Na+ solution a similar Kd value of about 9 mm was found, reflecting the high K+ /Na+ selectivity of 2 in water. Therefore, 2 is a promising fluorescent tool to measure ratiometrically and selectively physiologically relevant K+ levels.
Collapse
Affiliation(s)
- Thomas Schwarze
- Institut für Chemie, Anorganische Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476, Golm, Germany
| | - Janine Riemer
- Institut für Chemie, Anorganische Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476, Golm, Germany
| | - Hans-Jürgen Holdt
- Institut für Chemie, Anorganische Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476, Golm, Germany
| |
Collapse
|
38
|
Zhang G, Zhao N, Bobadova-Parvanova P, Wang M, Fronczek FR, Smith KM, Vicente MGH. Syntheses, Spectroscopic Properties, and Computational Study of (E,Z)-Ethenyl and Ethynyl-Linked BODIPYs. J Phys Chem A 2018; 122:6256-6265. [DOI: 10.1021/acs.jpca.8b05149] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Guanyu Zhang
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Ning Zhao
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | | | - Maodie Wang
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Frank R. Fronczek
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Kevin M. Smith
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - M. Graça H. Vicente
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| |
Collapse
|
39
|
Gerus A, Ślepokura K, Panek J, Turek A, Lisowski J. Chiral Cryptates Derived from a Hexaazamacrocycle. J Org Chem 2018; 83:6748-6753. [PMID: 29774743 DOI: 10.1021/acs.joc.8b00670] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The reactions of hexaazamacrocycle 1 with 2,6-bis(bromomethyl)pyridine or 2,6-bis[(tosyloxy)methyl)]pyridine in the presence of appropriate carbonates result in the formation of derivatives of cryptand 6: enantiopure azacryptates of sodium and potassium. Crystal structures of these compounds indicate interaction of a metal ion with four pyridine nitrogen atoms and four tertiary amine atoms. The competition reactions monitored by NMR spectroscopy indicate preferential binding of Na+ over K+ as well as higher affinity of 6 for Na+ in comparison with the [2.2.1] cryptand.
Collapse
Affiliation(s)
- Aleksandra Gerus
- Department of Chemistry , University of Wrocław , 14 F. Joliot-Curie , 50-383 Wrocław , Poland
| | - Katarzyna Ślepokura
- Department of Chemistry , University of Wrocław , 14 F. Joliot-Curie , 50-383 Wrocław , Poland
| | - Jarosław Panek
- Department of Chemistry , University of Wrocław , 14 F. Joliot-Curie , 50-383 Wrocław , Poland
| | - Aleksandra Turek
- Department of Chemistry , University of Wrocław , 14 F. Joliot-Curie , 50-383 Wrocław , Poland
| | - Jerzy Lisowski
- Department of Chemistry , University of Wrocław , 14 F. Joliot-Curie , 50-383 Wrocław , Poland
| |
Collapse
|
40
|
Zhang Y, Li Y, Su C, Barboiu M. Dynameric Frameworks with Aggregation-Induced Emission for Selective Detection of Adenosine Triphosphate. Chempluschem 2018; 83:506-513. [PMID: 31950657 DOI: 10.1002/cplu.201800173] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 05/05/2018] [Indexed: 01/04/2023]
Abstract
Luminogenic materials with aggregation-induced emission (AIE) have attracted considerable interest for applications. If these systems aggregate, the free rotation of their scaffold is restricted, and as a consequence the photoluminescence increases. Herein, the first experimental observation of a "dynameric effect" on AIE is described. A comparison is made of the AIE of molecular and dynameric sensors that exhibit non-linear turn-on switching of fluorescence upon their interaction with adenosine triphosphate (ATP). Confirmation was obtained from the enhanced ATP detection with multivalent dynameric networks compared with a molecular sensor. The dynamic, reversible behaviour of the imine linkages is critical to produce this enhancement, as a static, imine-reduced, polymeric sensor showed decreased AIE activity. The dynameric frameworks showed selectivity for ATP over adenosine diphosphate, and adenosine monophosphate over guanosine triphosphate or cytidine triphosphate. Together, these results will accelerate the systematic discovery of efficient adaptive biomimetic sensors.
Collapse
Affiliation(s)
- Yan Zhang
- Institut Européen des Membranes, Adaptive Supramolecular Nanosystems Group, University of Montpellier, ENSCM, CNRS, Place Eugène Bataillon, CC 047, 34095, Montpellier, France.,School of Pharmaceutical Sciences, Jiangnan University, Lihu Road 1800, Wuxi, 214122, P. R. China
| | - Yuhao Li
- Lehn Institute of Functional Materials, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, P. R. China
| | - Chengyong Su
- Lehn Institute of Functional Materials, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, P. R. China
| | - Mihail Barboiu
- Lehn Institute of Functional Materials, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, P. R. China.,Institut Européen des Membranes, Adaptive Supramolecular Nanosystems Group, University of Montpellier, ENSCM, CNRS, Place Eugène Bataillon, CC 047, 34095, Montpellier, France
| |
Collapse
|
41
|
Biswas S, Sharma V, Kumar P, Koner AL. Selective sensing of lysosomal iron(III) via three-component fluorescence-based strategy in living cells. SENSORS AND ACTUATORS B: CHEMICAL 2018; 260:460-464. [DOI: 10.1016/j.snb.2018.01.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/19/2023]
|
42
|
Song G, Sun R, Du J, Chen M, Tian Y. A highly selective, colorimetric, and environment-sensitive optical potassium ion sensor. Chem Commun (Camb) 2018; 53:5602-5605. [PMID: 28421220 DOI: 10.1039/c7cc00598a] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Potassium ions (K+) play vital roles in many biological processes and thus highly selective sensors for K+ are critical for disease diagnosis and health monitoring. Herein, we report a colorimetric K+ sensor (KS7) in which a hemicyanine dye was used as a fluorophore and phenylaza-[18]crown-6 lariat ether (ACLE) was utilized as a K+ ligand. The maximum absorption peak of KS7 shifted hypsochromically by 77 nm (from 515 to 438 nm) with an isosbestic point at 452 nm upon the addition of K+ to its aqueous solution accompanied by a color change from red to yellow. This sensor exhibited a linear response range to K+ from 1 to 200 mM, indicating its wide detection range for cellular, urinary, and environmental potassium ions. Further, this sensor is solvent-sensitive, implying its environmental sensitivity. For the demonstration of its applications, we prepared filter paper-based K+ test strips, which were used to detect K+ in urine conveniently.
Collapse
Affiliation(s)
- Guangjie Song
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
| | | | | | | | | |
Collapse
|
43
|
Recent progress in the development of organic dye based near-infrared fluorescence probes for metal ions. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.06.011] [Citation(s) in RCA: 222] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
44
|
Nguyen AL, Griffin KE, Zhou Z, Fronczek FR, Smith KM, Vicente MGH. Syntheses of 1,2,3-triazole-BODIPYs bearing up to three carbohydrate units. NEW J CHEM 2018. [DOI: 10.1039/c8nj00041g] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
BODIPYs bearing up to three glucose units were synthesized and their cytotoxicity and uptake investigated in human HEp2 cells.
Collapse
Affiliation(s)
- Alex L. Nguyen
- Department of Chemistry
- Louisiana State University
- Baton Rouge
- USA
| | | | - Zehua Zhou
- Department of Chemistry
- Louisiana State University
- Baton Rouge
- USA
| | | | - Kevin M. Smith
- Department of Chemistry
- Louisiana State University
- Baton Rouge
- USA
| | | |
Collapse
|
45
|
Zhang H, Chen X, Lan J, Liu Y, Zhou F, Wu D, You J. Silver-mediated direct C–H amination of BODIPYs for screening endoplasmic reticulum-targeting reagents. Chem Commun (Camb) 2018; 54:3219-3222. [DOI: 10.1039/c8cc00238j] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A highly efficient Ag(i)-mediated direct C–H amination of BODIPYs is accomplished. BODIPYs 3q and 4b exhibit specific ER-targeting capacities.
Collapse
Affiliation(s)
- Huaxing Zhang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Xingyu Chen
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Jingbo Lan
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Yanhong Liu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Fulin Zhou
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Di Wu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Jingsong You
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| |
Collapse
|
46
|
Poronik YM, Bernaś T, Wrzosek A, Banasiewicz M, Szewczyk A, Gryko DT. One-Photon and Two-Photon Mitochondrial Fluorescent Probes Based on a Rhodol Chromophore. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700600] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yevgen M. Poronik
- Institute of Organic Chemistry of Polish Academy of Sciences; Kasprzaka 44/52 01-224 Warsaw Poland
| | - Tytus Bernaś
- Nencki Institute of Experimental Biology of Polish Academy of Sciences; Pasteur 3 02-093 Warsaw Poland
| | - Antoni Wrzosek
- Nencki Institute of Experimental Biology of Polish Academy of Sciences; Pasteur 3 02-093 Warsaw Poland
| | | | - Adam Szewczyk
- Nencki Institute of Experimental Biology of Polish Academy of Sciences; Pasteur 3 02-093 Warsaw Poland
| | - Daniel T. Gryko
- Institute of Organic Chemistry of Polish Academy of Sciences; Kasprzaka 44/52 01-224 Warsaw Poland
| |
Collapse
|
47
|
Schwarze T, Mertens M, Müller P, Riemer J, Wessig P, Holdt HJ. Highly K + -Selective Fluorescent Probes for Lifetime Sensing of K + in Living Cells. Chemistry 2017; 23:17186-17190. [PMID: 28895214 DOI: 10.1002/chem.201703799] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Indexed: 12/16/2022]
Abstract
The new K+ -selective fluorescent probes 1 and 2 were obtained by CuI -catalyzed 1,3-dipolar azide alkyne cycloaddition (CuAAC) reactions of an alkyne-substituted [1,3]dioxolo[4,5-f][1,3]benzodioxole (DBD) ester fluorophore with azido-functionalized N-phenylaza-18-crown-6 ether and N-(o-isopropoxy) phenylaza-18-crown-6 ether, respectively. Probes 1 and 2 allow the detection of K+ in the presence of Na+ in water by fluorescence enhancement (2.2 for 1 at 2000 mm K+ and 2.5 for 2 at 160 mm K+ ). Fluorescence lifetime measurements in the absence and presence of K+ revealed bi-exponential decay kinetics with similar lifetimes, however with different proportions changing the averaged fluorescence decay times (τf(av) ). For 1 a decrease of τf(av) from 12.4 to 9.3 ns and for 2 an increase from 17.8 to 21.8 ns was observed. Variation of the substituent in ortho position of the aniline unit of the N-phenylaza-18-crown-6 host permits the modulation of the Kd value for a certain K+ concentration. For example, substitution of H in 1 by the isopropoxy group (2) decreased the Kd value from >300 mm to 10 mm. 2 was chosen for studying the efflux of K+ from human red blood cells (RBC). Upon addition of the Ca2+ ionophor ionomycin to a RBC suspension in a buffer containing Ca2+ , the fluorescence of 2 slightly rose within 10 min, however, after 120 min a significant increase was observed.
Collapse
Affiliation(s)
- Thomas Schwarze
- Institut für Chemie, Anorganische Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476, Golm, Germany
| | - Monique Mertens
- Institut für Chemie, Bioorganische Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476, Golm, Germany
| | - Peter Müller
- Institut für Biologie/Molekulare Biophysik, Humboldt Universität zu Berlin, Invalidenstr. 42, 10115, Berlin, Germany
| | - Janine Riemer
- Institut für Chemie, Anorganische Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476, Golm, Germany
| | - Pablo Wessig
- Institut für Chemie, Bioorganische Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476, Golm, Germany
| | - Hans-Jürgen Holdt
- Institut für Chemie, Anorganische Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476, Golm, Germany
| |
Collapse
|
48
|
Zhang J, Wang L, Xie Z. Size-Tunable and Crystalline BODIPY Nanorods for Bioimaging. ACS Biomater Sci Eng 2017; 4:1969-1975. [DOI: 10.1021/acsbiomaterials.7b00470] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jianxu Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, People’s Republic of China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, People’s Republic of China
| | - Lei Wang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, People’s Republic of China
| | - Zhigang Xie
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, People’s Republic of China
| |
Collapse
|
49
|
Müller BJ, Rappitsch T, Staudinger C, Rüschitz C, Borisov SM, Klimant I. Sodium-Selective Fluoroionophore-Based Optodes for Seawater Salinity Measurement. Anal Chem 2017; 89:7195-7202. [PMID: 28585806 DOI: 10.1021/acs.analchem.7b01373] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A new fluorescent sensor for Na+ is presented. The sensor relies on a Na+ selective fluoroionophore based on a bright red-emitting BODIPY chromophore. The fluorescence of the fluoroionophore is enhanced upon binding of Na+-ions to the highly selective aza-crown ether receptor due to reduction of the photoinduced electron transfer (PET) quenching. Solid state sensing materials were prepared by physically embedding the fluoroionophore into water-swellable biocompatible polymer matrices (polyurethane hydrogels), thus enabling continuous measurements of aqueous samples. Despite the simple design, the sensor showed no leaching of the indicator and featured fast and reversible response. Among different polyurethane hydrogels investigated, the hydrogel D1 featuring the highest water uptake was found to be the most suitable due to the highest dynamics between "off" and "on" states. Due to little or no cross sensitivity to other ions (e.g., Mg2+, Ca2+, K+) and its insensitivity to potential changes in pH, this sensor is promising for use in clinical diagnostics and for biological and marine applications. Fiber-optic sensors based on referenced read-out with a compact phase fluorimeter were prepared. To demonstrate their practical applicability, the sensors were used to determine the salinity in the seawater and brackish water of the Baltic Sea.
Collapse
Affiliation(s)
- Bernhard J Müller
- Graz University of Technology , Institute of Analytical Chemistry and Food Chemistry, Stremayrgasse 9, 8010 Graz, Austria
| | - Tanja Rappitsch
- Graz University of Technology , Institute of Analytical Chemistry and Food Chemistry, Stremayrgasse 9, 8010 Graz, Austria
| | - Christoph Staudinger
- Graz University of Technology , Institute of Analytical Chemistry and Food Chemistry, Stremayrgasse 9, 8010 Graz, Austria
| | - Christian Rüschitz
- Graz University of Technology , Institute of Analytical Chemistry and Food Chemistry, Stremayrgasse 9, 8010 Graz, Austria
| | - Sergey M Borisov
- Graz University of Technology , Institute of Analytical Chemistry and Food Chemistry, Stremayrgasse 9, 8010 Graz, Austria
| | - Ingo Klimant
- Graz University of Technology , Institute of Analytical Chemistry and Food Chemistry, Stremayrgasse 9, 8010 Graz, Austria
| |
Collapse
|
50
|
Yang H, Li X, Cai Y, Wang Q, Li W, Liu G, Tang Y. In silico prediction of chemical subcellular localization via multi-classification methods. MEDCHEMCOMM 2017; 8:1225-1234. [PMID: 30108833 PMCID: PMC6072212 DOI: 10.1039/c7md00074j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 03/22/2017] [Indexed: 12/16/2022]
Abstract
Chemical subcellular localization is closely related to drug distribution in the body and hence important in drug discovery and design. Although many in vivo and in vitro methods have been developed, in silico methods play key roles in the prediction of chemical subcellular localization due to their low costs and high performance. For that purpose, machine learning-based methods were developed here. At first, 614 unique compounds localized in the lysosome, mitochondria, nucleus and plasma membrane were collected from the literature. 80% of the compounds were used to build the models and the rest as the external validation set. Both fingerprints and molecular descriptors were used to describe the molecules, and six machine learning methods were applied to build the multi-classification models. The performance of the models was measured by 5-fold cross-validation and external validation. We further detected key substructures for each localization and analyzed potential structure-localization relationships, which could be very helpful for molecular design and modification. The key substructures can also be used as features complementary to fingerprints to improve the performance of the models.
Collapse
Affiliation(s)
- Hongbin Yang
- Shanghai Key Laboratory of New Drug Design , School of Pharmacy , East China University of Science and Technology , Shanghai 200237 , China .
| | - Xiao Li
- Shanghai Key Laboratory of New Drug Design , School of Pharmacy , East China University of Science and Technology , Shanghai 200237 , China .
| | - Yingchun Cai
- Shanghai Key Laboratory of New Drug Design , School of Pharmacy , East China University of Science and Technology , Shanghai 200237 , China .
| | - Qin Wang
- Shanghai Key Laboratory of New Drug Design , School of Pharmacy , East China University of Science and Technology , Shanghai 200237 , China .
| | - Weihua Li
- Shanghai Key Laboratory of New Drug Design , School of Pharmacy , East China University of Science and Technology , Shanghai 200237 , China .
| | - Guixia Liu
- Shanghai Key Laboratory of New Drug Design , School of Pharmacy , East China University of Science and Technology , Shanghai 200237 , China .
| | - Yun Tang
- Shanghai Key Laboratory of New Drug Design , School of Pharmacy , East China University of Science and Technology , Shanghai 200237 , China .
| |
Collapse
|