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Hario S, Le GNT, Sugimoto H, Takahashi-Yamashiro K, Nishinami S, Toda H, Li S, Marvin JS, Kuroda S, Drobizhev M, Terai T, Nasu Y, Campbell RE. High-Performance Genetically Encoded Green Fluorescent Biosensors for Intracellular l-Lactate. ACS CENTRAL SCIENCE 2024; 10:402-416. [PMID: 38435524 PMCID: PMC10906044 DOI: 10.1021/acscentsci.3c01250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 12/31/2023] [Accepted: 01/04/2024] [Indexed: 03/05/2024]
Abstract
l-Lactate is a monocarboxylate produced during the process of cellular glycolysis and has long generally been considered a waste product. However, studies in recent decades have provided new perspectives on the physiological roles of l-lactate as a major energy substrate and a signaling molecule. To enable further investigations of the physiological roles of l-lactate, we have developed a series of high-performance (ΔF/F = 15 to 30 in vitro), intensiometric, genetically encoded green fluorescent protein (GFP)-based intracellular l-lactate biosensors with a range of affinities. We evaluated these biosensors in cultured cells and demonstrated their application in an ex vivo preparation of Drosophila brain tissue. Using these biosensors, we were able to detect glycolytic oscillations, which we analyzed and mathematically modeled.
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Affiliation(s)
- Saaya Hario
- Department
of Chemistry, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Giang N. T. Le
- Department
of Chemistry, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
- Department
of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Hikaru Sugimoto
- Department
of Biochemistry and Molecular Biology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kei Takahashi-Yamashiro
- Department
of Molecular Pathology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
- Department
of Chemistry, Faculty of Science, University
of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Suguru Nishinami
- International
Institute for Integrative Sleep Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan
| | - Hirofumi Toda
- International
Institute for Integrative Sleep Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan
| | - Selene Li
- Department
of Chemistry, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Jonathan S. Marvin
- Howard
Hughes Medical Institute, Janelia Research Campus, Ashburn, Virginia 20147, United States
| | - Shinya Kuroda
- Department
of Biological Sciences, Graduate School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Mikhail Drobizhev
- Department
of Microbiology and Cell Biology, Montana
State University, Bozeman, Montana 59717, United States
| | - Takuya Terai
- Department
of Chemistry, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yusuke Nasu
- Department
of Chemistry, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
- PRESTO,
Japan Science and Technology Agency, Chiyoda-ku, Tokyo 102-0075, Japan
| | - Robert E. Campbell
- Department
of Chemistry, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
- Department
of Chemistry, Faculty of Science, University
of Alberta, Edmonton, Alberta T6G 2G2, Canada
- CERVO
Brain Research Center and Department of Biochemistry, Microbiology,
and Bioinformatics, Université Laval, Québec, Québec G1 V 0A6, Canada
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2
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Abstract
The genetically encoded fluorescent sensors convert chemical and physical signals into light. They are powerful tools for the visualisation of physiological processes in living cells and freely moving animals. The fluorescent protein is the reporter module of a genetically encoded biosensor. In this study, we first review the history of the fluorescent protein in full emission spectra on a structural basis. Then, we discuss the design of the genetically encoded biosensor. Finally, we briefly review several major types of genetically encoded biosensors that are currently widely used based on their design and molecular targets, which may be useful for the future design of fluorescent biosensors.
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Affiliation(s)
- Minji Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, No. 3663 Zhong Shan Road North, Shanghai, 200062, China
| | - Yifan Da
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, No. 3663 Zhong Shan Road North, Shanghai, 200062, China
| | - Yang Tian
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, No. 3663 Zhong Shan Road North, Shanghai, 200062, China
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3
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Goldberg JM, Lippard SJ. Mobile zinc as a modulator of sensory perception. FEBS Lett 2023; 597:151-165. [PMID: 36416529 PMCID: PMC10108044 DOI: 10.1002/1873-3468.14544] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/15/2022] [Accepted: 11/16/2022] [Indexed: 11/24/2022]
Abstract
Mobile zinc is an abundant transition metal ion in the central nervous system, with pools of divalent zinc accumulating in regions of the brain engaged in sensory perception and memory formation. Here, we present essential tools that we developed to interrogate the role(s) of mobile zinc in these processes. Most important are (a) fluorescent sensors that report the presence of mobile zinc and (b) fast, Zn-selective chelating agents for measuring zinc flux in animal tissue and live animals. The results of our studies, conducted in collaboration with neuroscientist experts, are presented for sensory organs involved in hearing, smell, vision, and learning and memory. A general principle emerging from these studies is that the function of mobile zinc in all cases appears to be downregulation of the amplitude of the response following overstimulation of the respective sensory organs. Possible consequences affecting human behavior are presented for future investigations in collaboration with interested behavioral scientists.
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Affiliation(s)
| | - Stephen J Lippard
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA
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4
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Chandra A, Prasad S, Alemanno F, De Luca M, Rizzo R, Romano R, Gigli G, Bucci C, Barra A, del Mercato LL. Fully Automated Computational Approach for Precisely Measuring Organelle Acidification with Optical pH Sensors. ACS APPLIED MATERIALS & INTERFACES 2022; 14:18133-18149. [PMID: 35404562 PMCID: PMC9052195 DOI: 10.1021/acsami.2c00389] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
pH balance and regulation within organelles are fundamental to cell homeostasis and proliferation. The ability to track pH in cells becomes significantly important to understand these processes in detail. Fluorescent sensors based on micro- and nanoparticles have been applied to measure intracellular pH; however, an accurate methodology to precisely monitor acidification kinetics of organelles in living cells has not been established, limiting the scope of this class of sensors. Here, silica-based fluorescent microparticles were utilized to probe the pH of intracellular organelles in MDA-MB-231 and MCF-7 breast cancer cells. In addition to the robust, ratiometric, trackable, and bioinert pH sensors, we developed a novel dimensionality reduction algorithm to automatically track and screen massive internalization events of pH sensors. We found that the mean acidification time is comparable among the two cell lines (ΔTMCF-7 = 16.3 min; ΔTMDA-MB-231 = 19.5 min); however, MCF-7 cells showed a much broader heterogeneity in comparison to MDA-MB-231 cells. The use of pH sensors and ratiometric imaging of living cells in combination with a novel computational approach allow analysis of thousands of events in a computationally inexpensive and faster way than the standard routes. The reported methodology can potentially be used to monitor pH as well as several other parameters associated with endocytosis.
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Affiliation(s)
- Anil Chandra
- Institute
of Nanotechnology, National Research Council (CNR-NANOTEC), Campus Ecotekne, Via Monteroni, Lecce 73100, Italy
| | - Saumya Prasad
- Institute
of Nanotechnology, National Research Council (CNR-NANOTEC), Campus Ecotekne, Via Monteroni, Lecce 73100, Italy
| | - Francesco Alemanno
- Institute
of Nanotechnology, National Research Council (CNR-NANOTEC), Campus Ecotekne, Via Monteroni, Lecce 73100, Italy
- Dipartimento
di Matematica e Fisica, Università
del Salento, Via Monteroni, Lecce 73100, Italy
| | - Maria De Luca
- Dipartimento
di Scienze e Tecnologie Biologiche ed Ambientali (DiSTeBa), Università del Salento, Via Monteroni, Lecce 73100, Italy
| | - Riccardo Rizzo
- Institute
of Nanotechnology, National Research Council (CNR-NANOTEC), Campus Ecotekne, Via Monteroni, Lecce 73100, Italy
| | - Roberta Romano
- Dipartimento
di Scienze e Tecnologie Biologiche ed Ambientali (DiSTeBa), Università del Salento, Via Monteroni, Lecce 73100, Italy
| | - Giuseppe Gigli
- Institute
of Nanotechnology, National Research Council (CNR-NANOTEC), Campus Ecotekne, Via Monteroni, Lecce 73100, Italy
- Dipartimento
di Matematica e Fisica, Università
del Salento, Via Monteroni, Lecce 73100, Italy
| | - Cecilia Bucci
- Dipartimento
di Scienze e Tecnologie Biologiche ed Ambientali (DiSTeBa), Università del Salento, Via Monteroni, Lecce 73100, Italy
| | - Adriano Barra
- Dipartimento
di Matematica e Fisica, Università
del Salento, Via Monteroni, Lecce 73100, Italy
- Istituto
Nazionale di Fisica Nucleare, Sezione di Lecce, Via Monteroni, Lecce 73100, Italy
| | - Loretta L. del Mercato
- Institute
of Nanotechnology, National Research Council (CNR-NANOTEC), Campus Ecotekne, Via Monteroni, Lecce 73100, Italy
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Ling L, Tian F, Zhenghe G, Cheng H, Yuanyuan L, Tao Y. Preparation and properties of a novel polystyrene solid-phase fluorescence pH sensor based on a naphthalimide derivative. JOURNAL OF CHEMICAL RESEARCH 2021. [DOI: 10.1177/17475198211035474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A novel naphthalimide-based solid-phase fluorescence pH sensor (PS-Acyl-II) is prepared by immobilization of a small molecule probe (II) on polystyrene microspheres through an ester bond and is characterized by Fourier-transform infrared spectroscopy, optical microscope, scanning electron microscope, and conductiometric titrations. The sensor can determine the pH of a solution within the pH 4.0–7.0, free from interference of common metal ions, and can be reused several times. The geometries of II, PS-Acyl-II, and its product with H+ are optimized at the B3LYP/6-31G** level by density functional theory. The charge distribution, orbital interactions, and bonding characteristics are analyzed and compared in detail to discuss the recognition mechanism and structure–fluorescence property relationships.
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Affiliation(s)
- Li Ling
- School of Pharmaceutical and Chemical Engineering, Chengxian College, Southeast University, Nanjing, P.R. China
| | - Feng Tian
- School of Pharmaceutical and Chemical Engineering, Chengxian College, Southeast University, Nanjing, P.R. China
| | - Guo Zhenghe
- School of Pharmaceutical and Chemical Engineering, Chengxian College, Southeast University, Nanjing, P.R. China
| | - Huang Cheng
- School of Pharmaceutical and Chemical Engineering, Chengxian College, Southeast University, Nanjing, P.R. China
| | - Liu Yuanyuan
- School of Pharmaceutical and Chemical Engineering, Chengxian College, Southeast University, Nanjing, P.R. China
| | - Yu Tao
- State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi’an Modern Chemistry Research Institute, Xi’an, P.R. China
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