1
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Minoshima M, Reja SI, Hashimoto R, Iijima K, Kikuchi K. Hybrid Small-Molecule/Protein Fluorescent Probes. Chem Rev 2024; 124:6198-6270. [PMID: 38717865 DOI: 10.1021/acs.chemrev.3c00549] [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: 05/23/2024]
Abstract
Hybrid small-molecule/protein fluorescent probes are powerful tools for visualizing protein localization and function in living cells. These hybrid probes are constructed by diverse site-specific chemical protein labeling approaches through chemical reactions to exogenous peptide/small protein tags, enzymatic post-translational modifications, bioorthogonal reactions for genetically incorporated unnatural amino acids, and ligand-directed chemical reactions. The hybrid small-molecule/protein fluorescent probes are employed for imaging protein trafficking, conformational changes, and bioanalytes surrounding proteins. In addition, fluorescent hybrid probes facilitate visualization of protein dynamics at the single-molecule level and the defined structure with super-resolution imaging. In this review, we discuss development and the bioimaging applications of fluorescent probes based on small-molecule/protein hybrids.
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Affiliation(s)
- Masafumi Minoshima
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 5650871, Japan
| | - Shahi Imam Reja
- Immunology Frontier Research Center, Osaka University, 2-1, Yamadaoka, Suita, Osaka 5650871, Japan
| | - Ryu Hashimoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 5650871, Japan
| | - Kohei Iijima
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 5650871, Japan
| | - Kazuya Kikuchi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 5650871, Japan
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2
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Hoelzel C, Bai Y, Wang M, Liu Y, Zhang X. High-Fidelity Assay Based on Turn-Off Fluorescence to Detect the Perturbations of Cellular Proteostasis. ACS BIO & MED CHEM AU 2024; 4:111-118. [PMID: 38645930 PMCID: PMC11027126 DOI: 10.1021/acsbiomedchemau.3c00012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 01/03/2024] [Accepted: 01/04/2024] [Indexed: 04/23/2024]
Abstract
The persistence of neurodegenerative diseases has necessitated the development of new strategies to monitor protein homeostasis (proteostasis). Previous efforts in our laboratory have focused on the development of fluorogenic strategies to observe the onset and progression of proteostatic stress. These works utilized solvatochromic and viscosity sensitive fluorophores to sense protein folded states, enabling stressor screening with an increase in the emission intensity upon aggregation. In this work, we present a novel, high-fidelity assay to detect perturbations of cellular proteostasis, where the fluorescence intensity decreases with the onset of proteostatic stress. Utilizing a fluorogenic, hydroxymethyl silicon-rhodamine probe to differentiate between protein folded states, we establish the validity of this technology in living cells by demonstrating a two-fold difference in fluorescence intensity between unstressed and stressed conditions.
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Affiliation(s)
- Conner Hoelzel
- Department
of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Yulong Bai
- Dalian
Institute of Chemical Physics, Chinese Academy
of Sciences, Dalian, Liaoning 116023, China
- Department
of Chemistry, School of Science and Research Center for Industries
of the Future, Westlake University, 600 Dunyu Road, Hangzhou 310030, Zhejiang
Province China
- Institute
of Natural Sciences, Westlake Institute for Advanced Study, Westlake
Laboratory of Life Sciences and Biomedicine, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province China
| | - Mengdie Wang
- Dalian
Institute of Chemical Physics, Chinese Academy
of Sciences, Dalian, Liaoning 116023, China
| | - Yu Liu
- Dalian
Institute of Chemical Physics, Chinese Academy
of Sciences, Dalian, Liaoning 116023, China
| | - Xin Zhang
- Department
of Chemistry, School of Science and Research Center for Industries
of the Future, Westlake University, 600 Dunyu Road, Hangzhou 310030, Zhejiang
Province China
- Institute
of Natural Sciences, Westlake Institute for Advanced Study, Westlake
Laboratory of Life Sciences and Biomedicine, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province China
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3
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Reja SI, Minoshima M, Hori Y, Kikuchi K. Recent advancements of fluorescent biosensors using semisynthetic probes. Biosens Bioelectron 2024; 247:115862. [PMID: 38147718 DOI: 10.1016/j.bios.2023.115862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 11/07/2023] [Accepted: 11/17/2023] [Indexed: 12/28/2023]
Abstract
Fluorescent biosensors are crucial experimental tools for live-cell imaging and the quantification of different biological analytes. Fluorescent protein (FP)-based biosensors are widely used for imaging applications in living systems. However, the use of FP-based biosensors is hindered by their large size, poor photostability, and laborious genetic manipulations required to improve their properties. Recently, semisynthetic fluorescent biosensors have been developed to address the limitations of FP-based biosensors using chemically modified fluorescent probes and self-labeling protein tag/peptide tags or DNA/RNA-based hybrid systems. Semisynthetic biosensors have unique advantages, as they can be easily modified using different probes. Moreover, the self-labeling protein tag, which labels synthetically developed ligands via covalent bonds, has immense potential for biosensor development. This review discusses the recent progress in different types of fluorescent biosensors for metabolites, protein aggregation and degradation, DNA methylation, endocytosis and exocytosis, membrane tension, and cellular viscosity. Here, we explain in detail the design strategy and working principle of these biosensors. The information presented will help the reader to create new biosensors using self-labeling protein tags for various applications.
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Affiliation(s)
- Shahi Imam Reja
- Immunology Frontier Research Center (IFReC), Osaka University, Suita, Osaka, 565-0871, Japan
| | - Masafumi Minoshima
- Division of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Yuichiro Hori
- Department of Chemistry, Faculty of Science, Kyushu University, Fukuoka, 819-0395, Japan
| | - Kazuya Kikuchi
- Immunology Frontier Research Center (IFReC), Osaka University, Suita, Osaka, 565-0871, Japan; Division of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan.
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4
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Paez‐Perez M, Kuimova MK. Molecular Rotors: Fluorescent Sensors for Microviscosity and Conformation of Biomolecules. Angew Chem Int Ed Engl 2024; 63:e202311233. [PMID: 37856157 PMCID: PMC10952837 DOI: 10.1002/anie.202311233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 10/17/2023] [Accepted: 10/17/2023] [Indexed: 10/20/2023]
Abstract
The viscosity and crowding of biological environment are considered vital for the correct cellular function, and alterations in these parameters are known to underly a number of pathologies including diabetes, malaria, cancer and neurodegenerative diseases, to name a few. Over the last decades, fluorescent molecular probes termed molecular rotors proved extremely useful for exploring viscosity, crowding, and underlying molecular interactions in biologically relevant settings. In this review, we will discuss the basic principles underpinning the functionality of these probes and will review advances in their use as sensors for lipid order, protein crowding and conformation, temperature and non-canonical nucleic acid structures in live cells and other relevant biological settings.
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Affiliation(s)
- Miguel Paez‐Perez
- Department of Chemistry, Imperial College London, MSRHImperial College LondonWood LaneLondonW12 0BZUK
| | - Marina K. Kuimova
- Department of Chemistry, Imperial College London, MSRHImperial College LondonWood LaneLondonW12 0BZUK
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5
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Wang M, Zhang Z, Jing B, Dong X, Guo K, Deng J, Wang Z, Wan W, Jin W, Gao Z, Liu Y. Tailoring the Amphiphilicity of Fluorescent Protein Chromophores to Detect Intracellular Proteome Aggregation in Diverse Biological Samples. Anal Chem 2023; 95:11751-11760. [PMID: 37506028 DOI: 10.1021/acs.analchem.3c01903] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2023]
Abstract
The formation of amorphous misfolded and aggregated proteins is a hallmark of proteome stress in diseased cells. Given its lack of defined targeting sites, the rational design of intracellular proteome aggregation sensors has been challenging. Herein, we modulate the amphiphilicity of fluorescent protein chromophores to enable selective detection of aggregated proteins in different biological samples, including recombinant proteins, stressed live cells, intoxicated mouse liver tissue, and human hepatocellular carcinoma tissue. By tuning the number of hydroxyl groups, we optimize the selectivity of fluorescent protein chromophores toward aggregated proteins in these biological samples. In recombinant protein applications, the most hydrophobic P0 (cLogP = 5.28) offers the highest fold change (FC = 31.6), sensitivity (LLOD = 0.1 μM), and brightness (Φ = 0.20) upon binding to aggregated proteins. In contrast, P4 of balanced amphiphilicity (cLogP = 2.32) is required for selective detection of proteome stresses in live cells. In mouse and human liver histology tissues, hydrophobic P1 exhibits the best performance in staining the aggregated proteome. Overall, the amphiphilicity of fluorescent chromophores governs the sensor's performance by matching the diverse nature of different biological samples. Together with common extracellular amyloid sensors (e.g., Thioflavin T), these sensors developed herein for intracellular amorphous aggregation complement the toolbox to study protein aggregation.
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Affiliation(s)
- Mengdie Wang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhenduo Zhang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
- The Second Hospital of Dalian Medical University, Dalian 116023, China
| | - Biao Jing
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
- The Second Hospital of Dalian Medical University, Dalian 116023, China
| | - Xuepeng Dong
- The Second Hospital of Dalian Medical University, Dalian 116023, China
| | - Kun Guo
- The Second Hospital of Dalian Medical University, Dalian 116023, China
| | - Jintai Deng
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
- The Second Hospital of Dalian Medical University, Dalian 116023, China
| | - Zhiming Wang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
- The Second Hospital of Dalian Medical University, Dalian 116023, China
| | - Wang Wan
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Wenhan Jin
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Zhenming Gao
- The Second Hospital of Dalian Medical University, Dalian 116023, China
| | - Yu Liu
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
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6
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Fluorogenic toolbox for visualizing protein aggregation: From designing principles to biological application. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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7
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Marques S, Slanska M, Chmelova K, Chaloupkova R, Marek M, Clark S, Damborsky J, Kool ET, Bednar D, Prokop Z. Mechanism-Based Strategy for Optimizing HaloTag Protein Labeling. JACS AU 2022; 2:1324-1337. [PMID: 35783171 PMCID: PMC9241015 DOI: 10.1021/jacsau.2c00002] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 04/08/2022] [Accepted: 04/08/2022] [Indexed: 06/15/2023]
Abstract
HaloTag labeling technology has introduced unrivaled potential in protein chemistry and molecular and cellular biology. A wide variety of ligands have been developed to meet the specific needs of diverse applications, but only a single protein tag, DhaAHT, is routinely used for their incorporation. Following a systematic kinetic and computational analysis of different reporters, a tetramethylrhodamine- and three 4-stilbazolium-based fluorescent ligands, we showed that the mechanism of incorporating different ligands depends both on the binding step and the efficiency of the chemical reaction. By studying the different haloalkane dehalogenases DhaA, LinB, and DmmA, we found that the architecture of the access tunnels is critical for the kinetics of both steps and the ligand specificity. We showed that highly efficient labeling with specific ligands is achievable with natural dehalogenases. We propose a simple protocol for selecting the optimal protein tag for a specific ligand from the wide pool of available enzymes with diverse access tunnel architectures. The application of this protocol eliminates the need for expensive and laborious protein engineering.
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Affiliation(s)
- Sérgio
M. Marques
- Loschmidt
Laboratories, Department of Experimental Biology and RECETOX, Faculty
of Science, Masaryk University, 625 00 Brno, Czech Republic
- International
Clinical Research Center, St. Anne’s
University Hospital, 656
91 Brno, Czech Republic
| | - Michaela Slanska
- Loschmidt
Laboratories, Department of Experimental Biology and RECETOX, Faculty
of Science, Masaryk University, 625 00 Brno, Czech Republic
| | - Klaudia Chmelova
- Loschmidt
Laboratories, Department of Experimental Biology and RECETOX, Faculty
of Science, Masaryk University, 625 00 Brno, Czech Republic
- International
Clinical Research Center, St. Anne’s
University Hospital, 656
91 Brno, Czech Republic
| | - Radka Chaloupkova
- Loschmidt
Laboratories, Department of Experimental Biology and RECETOX, Faculty
of Science, Masaryk University, 625 00 Brno, Czech Republic
- Enantis
Ltd., Biotechnology Incubator INBIT, 625 00 Brno, Czech Republic
| | - Martin Marek
- Loschmidt
Laboratories, Department of Experimental Biology and RECETOX, Faculty
of Science, Masaryk University, 625 00 Brno, Czech Republic
- International
Clinical Research Center, St. Anne’s
University Hospital, 656
91 Brno, Czech Republic
| | - Spencer Clark
- Department
of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Jiri Damborsky
- Loschmidt
Laboratories, Department of Experimental Biology and RECETOX, Faculty
of Science, Masaryk University, 625 00 Brno, Czech Republic
- International
Clinical Research Center, St. Anne’s
University Hospital, 656
91 Brno, Czech Republic
| | - Eric T. Kool
- Department
of Chemistry, Stanford University, Stanford, California 94305, United States
| | - David Bednar
- Loschmidt
Laboratories, Department of Experimental Biology and RECETOX, Faculty
of Science, Masaryk University, 625 00 Brno, Czech Republic
| | - Zbynek Prokop
- Loschmidt
Laboratories, Department of Experimental Biology and RECETOX, Faculty
of Science, Masaryk University, 625 00 Brno, Czech Republic
- International
Clinical Research Center, St. Anne’s
University Hospital, 656
91 Brno, Czech Republic
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8
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Melo EP, Konno T, Farace I, Awadelkareem MA, Skov LR, Teodoro F, Sancho TP, Paton AW, Paton JC, Fares M, Paulo PMR, Zhang X, Avezov E. Stress-induced protein disaggregation in the endoplasmic reticulum catalysed by BiP. Nat Commun 2022; 13:2501. [PMID: 35523806 PMCID: PMC9076838 DOI: 10.1038/s41467-022-30238-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 04/20/2022] [Indexed: 01/31/2023] Open
Abstract
Protein synthesis is supported by cellular machineries that ensure polypeptides fold to their native conformation, whilst eliminating misfolded, aggregation prone species. Protein aggregation underlies pathologies including neurodegeneration. Aggregates' formation is antagonised by molecular chaperones, with cytoplasmic machinery resolving insoluble protein aggregates. However, it is unknown whether an analogous disaggregation system exists in the Endoplasmic Reticulum (ER) where ~30% of the proteome is synthesised. Here we show that the ER of a variety of mammalian cell types, including neurons, is endowed with the capability to resolve protein aggregates under stress. Utilising a purpose-developed protein aggregation probing system with a sub-organellar resolution, we observe steady-state aggregate accumulation in the ER. Pharmacological induction of ER stress does not augment aggregates, but rather stimulate their clearance within hours. We show that this dissagregation activity is catalysed by the stress-responsive ER molecular chaperone - BiP. This work reveals a hitherto unknow, non-redundant strand of the proteostasis-restorative ER stress response.
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Affiliation(s)
- Eduardo Pinho Melo
- Department of Clinical Neurosciences, UK Dementia Research Institute, University of Cambridge, Cambridge, UK.
- CCMAR-Centro de Ciências do Mar, Universidade do Algarve, Campus de Gambelas, Faro, Portugal.
| | - Tasuku Konno
- Department of Clinical Neurosciences, UK Dementia Research Institute, University of Cambridge, Cambridge, UK
| | - Ilaria Farace
- Department of Clinical Neurosciences, UK Dementia Research Institute, University of Cambridge, Cambridge, UK
| | - Mosab Ali Awadelkareem
- Department of Clinical Neurosciences, UK Dementia Research Institute, University of Cambridge, Cambridge, UK
| | - Lise R Skov
- Department of Clinical Neurosciences, UK Dementia Research Institute, University of Cambridge, Cambridge, UK
| | - Fernando Teodoro
- CCMAR-Centro de Ciências do Mar, Universidade do Algarve, Campus de Gambelas, Faro, Portugal
| | - Teresa P Sancho
- CCMAR-Centro de Ciências do Mar, Universidade do Algarve, Campus de Gambelas, Faro, Portugal
| | - Adrienne W Paton
- Research Centre for Infectious Diseases, Department of Molecular and Biomedical Science, University of Adelaide, Adelaide, SA, Australia
| | - James C Paton
- Research Centre for Infectious Diseases, Department of Molecular and Biomedical Science, University of Adelaide, Adelaide, SA, Australia
| | - Matthew Fares
- Department of Chemistry, The Pennsylvania State University, University Park, State College, PA, USA
| | - Pedro M R Paulo
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa, Portugal
| | - Xin Zhang
- Department of Chemistry, The Pennsylvania State University, University Park, State College, PA, USA
| | - Edward Avezov
- Department of Clinical Neurosciences, UK Dementia Research Institute, University of Cambridge, Cambridge, UK.
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9
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Bachollet SPJT, Shpinov Y, Broch F, Benaissa H, Gautier A, Pietrancosta N, Mallet JM, Dumat B. An expanded palette of fluorogenic HaloTag probes with enhanced contrast for targeted cellular imaging. Org Biomol Chem 2022; 20:3619-3628. [PMID: 35420083 DOI: 10.1039/d1ob02394b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We report the development of HaloTag fluorogens based on dipolar flexible molecular rotor structures. By modulating the electron donating and withdrawing groups, we have tuned the absorption and emission wavelengths to design a palette of fluorogens with emissions spanning the green to red range, opening new possibilities for multicolor imaging. The probes were studied in glycerol and in the presence of HaloTag and exhibited good fluorogenic properties thanks to a viscosity-sensitive emission. In live-cell confocal imaging, the fluorogens yielded only a very low non-specific signal that enabled wash-free targeted imaging of intracellular organelles and proteins with good contrast. Combining experimental studies and theoretical investigation of the protein/fluorogen complexes by molecular dynamics, these results offer new insight into the design of molecular rotor-based fluorogenic HaloTag probes in order to improve reaction rates and the imaging contrast.
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Affiliation(s)
- Sylvestre P J T Bachollet
- Laboratoire des biomolécules, LBM, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France.
| | - Yuriy Shpinov
- Laboratoire des biomolécules, LBM, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France.
| | - Fanny Broch
- Laboratoire des biomolécules, LBM, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France.
| | - Hela Benaissa
- Laboratoire des biomolécules, LBM, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France.
| | - Arnaud Gautier
- Laboratoire des biomolécules, LBM, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France. .,Institut Universitaire de France (IUF), 1 rue Descartes, 75005 Paris, France
| | - Nicolas Pietrancosta
- Laboratoire des biomolécules, LBM, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France. .,Neuroscience Paris Seine - Institut de Biologie Paris Seine (NPS - IBPS) INSERM, CNRS, Sorbonne Université, Paris, France
| | - Jean-Maurice Mallet
- Laboratoire des biomolécules, LBM, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France.
| | - Blaise Dumat
- Laboratoire des biomolécules, LBM, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France.
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10
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Dudanova I. Biosensors for Studying Neuronal Proteostasis. Front Mol Neurosci 2022; 15:829365. [PMID: 35345600 PMCID: PMC8957107 DOI: 10.3389/fnmol.2022.829365] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Accepted: 01/31/2022] [Indexed: 01/18/2023] Open
Abstract
Cellular health depends on the integrity and functionality of the proteome. Each cell is equipped with a protein quality control machinery that maintains protein homeostasis (proteostasis) by helping proteins adopt and keep their native structure, and ensuring the degradation of damaged proteins. Postmitotic cells such as neurons are especially vulnerable to disturbances of proteostasis. Defects of protein quality control occur in aging and have been linked to several disorders, including neurodegenerative diseases. However, the exact nature and time course of such disturbances in the context of brain diseases remain poorly understood. Sensors that allow visualization and quantitative analysis of proteostasis capacity in neurons are essential for gaining a better understanding of disease mechanisms and for testing potential therapies. Here, I provide an overview of available biosensors for assessing the functionality of the neuronal proteostasis network, point out the advantages and limitations of different sensors, and outline their potential for biological discoveries and translational applications.
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Affiliation(s)
- Irina Dudanova
- Molecular Neurodegeneration Group, Max Planck Institute of Neurobiology, Martinsried, Germany
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11
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Ye S, Hsiung CH, Tang Y, Zhang X. Visualizing the Multistep Process of Protein Aggregation in Live Cells. Acc Chem Res 2022; 55:381-390. [PMID: 35040316 PMCID: PMC9098262 DOI: 10.1021/acs.accounts.1c00648] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Protein aggregation is a biological phenomenon in which aberrantly processed or mutant proteins misfold and assemble into a variety of insoluble aggregates. Decades of studies have delineated the structure, interaction, and activity of proteins in either their natively folded structures or insoluble aggregates such as amyloid fibrils. However, a variety of intermediate species exist between these two extreme states in the protein folding landscape. Herein, we collectively term these intermediate species as misfolded protein oligomers, including soluble oligomers and preamyloid oligomers that are formed by unfolded or misfolded proteins. While extensive tools have been developed to study folded proteins or amyloid fibrils, research to understand the properties and activities of misfolded protein oligomers has been limited by the lack of methods to detect and interrogate these species in live cells.In this Account, we describe our efforts in the development of chemical methods that allow for the characterization of the multistep protein aggregation process, in particular the misfolded protein oligomers, in living cells. As the start of this journey, we attempted to develop a fluorogenic method wherein the misfolded oligomers could turn on the fluorescence of chemical probes that are conjugated to the protein-of-interest (POI). To this end, we produced a series of destabilized HaloTag variants, formulating the primary component of the AgHalo sensor, which misfolds and aggregates when cells are subjected to stress. When AgHalo is covalently conjugated with a solvatochromic fluorophore, misfolding of the AgHalo conjugate would activate fluorescence, resulting in the observation of misfolded oligomers. Following this work, we extended the scope of detection from AgHalo to any protein-of-interest via the AggTag method, wherein the POIs are genetically fused to self-labeling protein tags (HaloTag or SNAP-tag). Focusing on the molecular rotor-based fluorophores, we applied the modulated fluorescent protein (FP) chromophore core as a prototype for the AggTag probes, to enable the fluorogenic detection of misfolded soluble oligomers of multiple proteins in live cells. Next, we further developed the AggTag method to distinguish insoluble aggregates from misfolded oligomers, using two classes of probes that activate different fluorescence emission toward these two conformations. To enable this goal, we applied physical organic chemistry and computational chemistry to discover a new category of triode-like fluorophores, wherein the π orbitals of either an electron density regulator or the donor-acceptor linkages are used to control the rotational barriers of fluorophores in the excited states. This mechanism allows us to rationally design molecular rotor-based fluorophores that have desired responses to viscosity, thus extending the application of the AggTag method.In summary, our work allows the direct monitoring of the misfolded protein oligomers and differentiation of insoluble aggregates from other conformations in live cells, thus enabling studies of many currently unanswered questions in protein aggregation. Future directions are to develop methods that enable quantitative analyses of the protein aggregation process. Further, new methods are needed to detect and to quantify the formation and maturation of protein or RNA condensates that form membraneless organelles.
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Affiliation(s)
- Songtao Ye
- Department of Chemistry, Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, Pennsylvania 16802, United States,Present address: School of Science and School of Life Sciences, Westlake University; Institute of Natural Sciences, Westlake Institute for Advanced Study; Westlake Laboratory of Life Sciences and Biomedicine; 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
| | - Chia-Heng Hsiung
- Department of Chemistry, Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, Pennsylvania 16802, United States,Present address: School of Science and School of Life Sciences, Westlake University; Institute of Natural Sciences, Westlake Institute for Advanced Study; Westlake Laboratory of Life Sciences and Biomedicine; 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
| | - Yuqi Tang
- Department of Chemistry, Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, Pennsylvania 16802, United States,Present address: School of Science and School of Life Sciences, Westlake University; Institute of Natural Sciences, Westlake Institute for Advanced Study; Westlake Laboratory of Life Sciences and Biomedicine; 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
| | - Xin Zhang
- Department of Chemistry, Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, Pennsylvania 16802, United States,Present address: School of Science and School of Life Sciences, Westlake University; Institute of Natural Sciences, Westlake Institute for Advanced Study; Westlake Laboratory of Life Sciences and Biomedicine; 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
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12
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Confinement fluorescence effect (CFE): Lighting up life by enhancing the absorbed photon energy utilization efficiency of fluorophores. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213979] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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13
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Tang S, Wang W, Zhang X. Direct visualization and profiling of protein misfolding and aggregation in live cells. Curr Opin Chem Biol 2021; 64:116-123. [PMID: 34246835 DOI: 10.1016/j.cbpa.2021.05.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 04/27/2021] [Accepted: 05/09/2021] [Indexed: 10/20/2022]
Abstract
Over the past few years, research tools have been developed to monitor the multistep protein aggregation process in live cells, a process that has been associated with a growing number of human diseases. Herein, we describe recent advances in methods that can either survey the distribution of aggregation at the level of the cellular proteome using mass spectroscopy or discern the multistep aggregation process of specific proteins of interest via fluorescence signals. Future development and application of such technologies are expected to provide insights on mechanisms, diagnosis, and treatment of diseases rooted in protein aggregation.
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Affiliation(s)
- Sicheng Tang
- Department of Chemistry, The Pennsylvania State University, University Park, PA, 16802, United States.
| | - Wenting Wang
- Department of Chemistry, The Pennsylvania State University, University Park, PA, 16802, United States
| | - Xin Zhang
- Department of Chemistry, The Pennsylvania State University, University Park, PA, 16802, United States; Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA, 16802, United States.
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14
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Bai Y, Wan W, Huang Y, Jin W, Lyu H, Xia Q, Dong X, Gao Z, Liu Y. Quantitative interrogation of protein co-aggregation using multi-color fluorogenic protein aggregation sensors. Chem Sci 2021; 12:8468-8476. [PMID: 34221329 PMCID: PMC8221170 DOI: 10.1039/d1sc01122g] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 05/19/2021] [Indexed: 12/27/2022] Open
Abstract
Co-aggregation of multiple pathogenic proteins is common in neurodegenerative diseases but deconvolution of such biochemical process is challenging. Herein, we developed a dual-color fluorogenic thermal shift assay to simultaneously report on the aggregation of two different proteins and quantitatively study their thermodynamic stability during co-aggregation. Expansion of spectral coverage was first achieved by developing multi-color fluorogenic protein aggregation sensors. Orthogonal detection was enabled by conjugating sensors of minimal fluorescence crosstalk to two different proteins via sortase-tag technology. Using this assay, we quantified shifts in melting temperatures in a heterozygous model protein system, revealing that the thermodynamic stability of wild-type proteins was significantly compromised by the mutant ones but not vice versa. We also examined how small molecule ligands selectively and differentially interfere with such interplay. Finally, we demonstrated these sensors are suited to visualize how different proteins exert influence on each other upon their co-aggregation in live cells.
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Affiliation(s)
- Yulong Bai
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Wang Wan
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Yanan Huang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Wenhan Jin
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Haochen Lyu
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Qiuxuan Xia
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xuepeng Dong
- The Second Hospital of Dalian Medical University 467 Zhongshan Road Dalian 116044 China
| | - Zhenming Gao
- The Second Hospital of Dalian Medical University 467 Zhongshan Road Dalian 116044 China
| | - Yu Liu
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
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15
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Zhang S, Greening DW, Hong Y. Recent advances in bioanalytical methods to measure proteome stability in cells. Analyst 2021; 146:2097-2109. [DOI: 10.1039/d0an01547d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This review summarizes recent bioanalytical methods for measuring and profiling protein stability in cells on a proteome-wide scale, which can provide insights for proteostasis and associated diseases.
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Affiliation(s)
- Shouxiang Zhang
- Department of Chemistry and Physics
- La Trobe Institute for Molecular Science
- La Trobe University
- Melbourne
- Australia
| | - David W. Greening
- Molecular Proteomics
- Baker Heart and Diabetes Institute
- Melbourne
- Australia
- Department of Biochemistry and Genetics
| | - Yuning Hong
- Department of Chemistry and Physics
- La Trobe Institute for Molecular Science
- La Trobe University
- Melbourne
- Australia
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16
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Wan W, Jin W, Huang Y, Xia Q, Bai Y, Lyu H, Liu D, Dong X, Li W, Liu Y. Monitoring the Dynamics of Proteome Aggregation in Live Cells Using a Solubilized and Noncovalent Analogue of Fluorescent Protein Chromophores. Anal Chem 2020; 93:1717-1724. [PMID: 33382253 DOI: 10.1021/acs.analchem.0c04309] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Wang Wan
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Wenhan Jin
- Department of Biotechnology, Dalian Medical University, No. 9 Lvshun South Road West, Dalian 116044, China
| | - Yanan Huang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Qiuxuan Xia
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yulong Bai
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Haochen Lyu
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Dongning Liu
- Department of Biotechnology, Dalian Medical University, No. 9 Lvshun South Road West, Dalian 116044, China
| | - Xuepeng Dong
- Department of Biotechnology, Dalian Medical University, No. 9 Lvshun South Road West, Dalian 116044, China
| | - Weiling Li
- Department of Biotechnology, Dalian Medical University, No. 9 Lvshun South Road West, Dalian 116044, China
- Liaoning Key Laboratory of Hematopoietic Stem Cell Transplantation and Translational Medicine, Second Hospital of Dalian Medical University, Dalian 116027, China
| | - Yu Liu
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
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17
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Ye S, Zhang H, Fei J, Wolstenholme CH, Zhang X. A General Strategy to Control Viscosity Sensitivity of Molecular Rotor-Based Fluorophores. Angew Chem Int Ed Engl 2020; 60:1339-1346. [PMID: 32991766 DOI: 10.1002/anie.202011108] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Indexed: 12/13/2022]
Abstract
Molecular rotor-based fluorophores (RBFs) have been widely used in many fields. However, the lack of control of their viscosity sensitivity limits their application. Herein, this problem is resolved by chemically installing extended π-rich alternating carbon-carbon linkages between the rotational electron donors and acceptors of RBFs. The data reveal that the length of the linkage strongly influences the viscosity sensitivity, likely resulting from varying height of the energy barriers between the fluorescent planar and the dark twisted configurations. Three RBF derivatives that span a wide range of viscosity sensitivities were designed. These RBFs demonstrated, through a dual-color imaging strategy, that they can differentiate misfolded protein oligomers and insoluble aggregates, both in test tubes and live cells. Beyond RBFs, it is envisioned that this chemical mechanism might be generally applicable to a wide range of photoisomerizable and aggregation-induced emission fluorophores.
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Affiliation(s)
- Songtao Ye
- Department of Chemistry, Pennsylvania State University, University Park, PA, 16802, USA
| | - Han Zhang
- Department of Chemistry, Pennsylvania State University, University Park, PA, 16802, USA
| | - Jinyu Fei
- Department of Chemistry, Pennsylvania State University, University Park, PA, 16802, USA
| | | | - Xin Zhang
- Department of Chemistry, Pennsylvania State University, University Park, PA, 16802, USA.,Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA, 16802, USA
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18
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Ye S, Zhang H, Fei J, Wolstenholme CH, Zhang X. A General Strategy to Control Viscosity Sensitivity of Molecular Rotor‐Based Fluorophores. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202011108] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Songtao Ye
- Department of Chemistry Pennsylvania State University University Park PA 16802 USA
| | - Han Zhang
- Department of Chemistry Pennsylvania State University University Park PA 16802 USA
| | - Jinyu Fei
- Department of Chemistry Pennsylvania State University University Park PA 16802 USA
| | | | - Xin Zhang
- Department of Chemistry Pennsylvania State University University Park PA 16802 USA
- Department of Biochemistry and Molecular Biology Pennsylvania State University University Park PA 16802 USA
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19
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Hoelzel CA, Zhang X. Visualizing and Manipulating Biological Processes by Using HaloTag and SNAP-Tag Technologies. Chembiochem 2020; 21:1935-1946. [PMID: 32180315 PMCID: PMC7367766 DOI: 10.1002/cbic.202000037] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 02/27/2020] [Indexed: 12/25/2022]
Abstract
Visualizing and manipulating the behavior of proteins is crucial to understanding the physiology of the cell. Methods of biorthogonal protein labeling are important tools to attain this goal. In this review, we discuss advances in probe technology specific for self-labeling protein tags, focusing mainly on the application of HaloTag and SNAP-tag systems. We describe the latest developments in small-molecule probes that enable fluorogenic (no wash) imaging and super-resolution fluorescence microscopy. In addition, we cover several methodologies that enable the perturbation or manipulation of protein behavior and function towards the control of biological pathways. Thus, current technical advances in the HaloTag and SNAP-tag systems means that they are becoming powerful tools to enable the visualization and manipulation of biological processes, providing invaluable scientific insights that are difficult to obtain by traditional methodologies. As the multiplex of self-labeling protein tag systems continues to be developed and expanded, the utility of these protein tags will allow researchers to address previously inaccessible questions at the forefront of biology.
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Affiliation(s)
- Conner A Hoelzel
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania, PA 16802, USA
| | - Xin Zhang
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania, PA 16802, USA
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20
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Owyong TC, Subedi P, Deng J, Hinde E, Paxman JJ, White JM, Chen W, Heras B, Wong WWH, Hong Y. A Molecular Chameleon for Mapping Subcellular Polarity in an Unfolded Proteome Environment. Angew Chem Int Ed Engl 2020; 59:10129-10135. [DOI: 10.1002/anie.201914263] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Tze Cin Owyong
- ARC Centre of Excellence in Exciton Science School of Chemistry Bio21 Institute The University of Melbourne Parkville VIC 3010 Australia
- Department of Chemistry and Physics La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Pramod Subedi
- Department of Biochemistry and Genetics La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Jieru Deng
- Department of Biochemistry and Genetics La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Elizabeth Hinde
- School of Physics Department of Biochemistry and Molecular Biology Bio21 Institute The University of Melbourne Melbourne VIC 3010 Australia
| | - Jason J. Paxman
- Department of Biochemistry and Genetics La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Jonathan M. White
- ARC Centre of Excellence in Exciton Science School of Chemistry Bio21 Institute The University of Melbourne Parkville VIC 3010 Australia
| | - Weisan Chen
- Department of Biochemistry and Genetics La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Begoña Heras
- Department of Biochemistry and Genetics La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Wallace W. H. Wong
- ARC Centre of Excellence in Exciton Science School of Chemistry Bio21 Institute The University of Melbourne Parkville VIC 3010 Australia
| | - Yuning Hong
- Department of Chemistry and Physics La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
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21
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Owyong TC, Subedi P, Deng J, Hinde E, Paxman JJ, White JM, Chen W, Heras B, Wong WWH, Hong Y. A Molecular Chameleon for Mapping Subcellular Polarity in an Unfolded Proteome Environment. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914263] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Tze Cin Owyong
- ARC Centre of Excellence in Exciton Science School of Chemistry Bio21 Institute The University of Melbourne Parkville VIC 3010 Australia
- Department of Chemistry and Physics La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Pramod Subedi
- Department of Biochemistry and Genetics La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Jieru Deng
- Department of Biochemistry and Genetics La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Elizabeth Hinde
- School of Physics Department of Biochemistry and Molecular Biology Bio21 Institute The University of Melbourne Melbourne VIC 3010 Australia
| | - Jason J. Paxman
- Department of Biochemistry and Genetics La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Jonathan M. White
- ARC Centre of Excellence in Exciton Science School of Chemistry Bio21 Institute The University of Melbourne Parkville VIC 3010 Australia
| | - Weisan Chen
- Department of Biochemistry and Genetics La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Begoña Heras
- Department of Biochemistry and Genetics La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Wallace W. H. Wong
- ARC Centre of Excellence in Exciton Science School of Chemistry Bio21 Institute The University of Melbourne Parkville VIC 3010 Australia
| | - Yuning Hong
- Department of Chemistry and Physics La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
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22
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23
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Varejão JOS, Varejão EVV, Fernandes SA. Synthesis and Derivatization of Julolidine: A Powerful Heterocyclic Structure. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900398] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Jodieh Oliveira Santana Varejão
- Grupo de Química Supramolecular e Biomimética (GQSB); Departamento de Química; Universidade Federal de Viçosa; 36570-900 Brazil
| | - Eduardo Vinícius Vieira Varejão
- Grupo de Química Supramolecular e Biomimética (GQSB); Departamento de Química; Universidade Federal de Viçosa; 36570-900 Brazil
| | - Sergio Antonio Fernandes
- Grupo de Química Supramolecular e Biomimética (GQSB); Departamento de Química; Universidade Federal de Viçosa; 36570-900 Brazil
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24
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Hou J, Wu X, Sun W, Duan Y, Liu Y, Han T, Li Z. Toward a simple way for a mechanochromic luminescent material with high contrast ratio and fatigue resistance: Implication for information storage. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 214:348-354. [PMID: 30798217 DOI: 10.1016/j.saa.2019.02.069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 01/31/2019] [Accepted: 02/17/2019] [Indexed: 06/09/2023]
Abstract
In this work, we present the synthesis and photoluminescence (PL) behaviour of a new compound, DHNC. The molecular design includes twisted conformation and the incorporation of electron donor (D) and acceptor (A) pairs, which endows the compound with both twisted intramolecular charge transfer (ICT) and aggregation-induced emission (AIE) properties. Importantly, the compound exhibits mechanochromic luminescence (MCL): The emission of the crystalline powder shows strong green emission but turns into orange-red with an obvious quenching effect after grinding, demonstrating a high contrast ratio. The emission of the ground sample can be rejuvenated though recrystallization by either immersion or fumigation in common organic solvents. The emission can be reversibly switched between two states for more than 10 cycles, showing fatigue resistance. In a quantitative mechanical experiment, the DHNC-loaded film has a remarkable emission loss with the external force up to 67.9 Mpa, showing high sensitivity. An archetype of information storage is developed based on this MCL material, which uses mechanical force to write information and organic vapour to erase. Letters and cartoon pictures can be written and erased repeatedly on the DHNC-loaded film, indicating high contrast ratio and fatigue resistance.
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Affiliation(s)
- Jingdan Hou
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Xiuyuan Wu
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Wenting Sun
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Yuai Duan
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Yang Liu
- Beijing Key Laboratory of Radiation Advanced Materials, Beijing Research Center for Radiation Application, 100015 Beijing, China
| | - Tianyu Han
- Department of Chemistry, Capital Normal University, Beijing 100048, China.
| | - Zhongfeng Li
- Department of Chemistry, Capital Normal University, Beijing 100048, China.
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25
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Abstract
Fluorescent folding sensor is a powerful tool to detect proteome stresses, including heat, osmotic, oxidative, and drug induced stresses. Monitoring proteome stress using these sensors allows us to dissect the mechanism of cellular stress and find therapeutics that ameliorate stress related diseases. Here we present a HaloTag-based fluorogenic proteome stress sensor (AgHalo) to robustly detect and quantify proteome stresses in live cells. We describe how proteome stresses are monitored in both bacterial and mammalian live cells using fluorescence confocal microscope and fluorescence plate reader.
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26
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Fares M, Zhang X. Quantification of Cellular Proteostasis in Live Cells by Fluorogenic Assay Using the AgHalo Sensor. ACTA ACUST UNITED AC 2018; 11:e58. [PMID: 30489038 DOI: 10.1002/cpch.58] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Proper cellular proteostasis is essential to cellular fitness and viability. Exogenous stress conditions compromise proteostasis and cause aggregation of cellular proteins. We have developed a fluorogenic sensor (AgHalo) to quantify stress-induced proteostasis deficiency. The AgHalo sensor uses a destabilized HaloTag variant to represent aggregation-prone cellular proteins and is equipped with a series of fluorogenic probes that exhibit a fluorescence increase when the sensor forms either soluble oligomers or insoluble aggregates. Herein, we present protocols that describe how the AgHalo sensor can be employed to visualize and quantify proteome stress in live cells using a direct fluorescence read-out and visualization with a fluorescence microplate reader and a microscope. Additionally, protocols for using the AgHalo sensor in combination with fluorogenic probes and commercially available HaloTag probes to enable two-color imaging experiments are described. These protocols will enable use of the AgHalo sensor to visualize and quantify proteostasis in live cells, a task that is difficult to accomplish using previous, always-fluorescent methods. © 2018 by John Wiley & Sons, Inc.
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Affiliation(s)
- Matthew Fares
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania
| | - Xin Zhang
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania.,Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, Pennsylvania.,The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, Pennsylvania
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27
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Liu Y, Zhang X. Heat Shock Protein Reports on Proteome Stress. Biotechnol J 2018; 13. [DOI: 10.1002/biot.201800039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Yu Liu
- Department of Chemistry, The Pennsylvania State University; University Park PA 16802 USA
| | - Xin Zhang
- Department of Chemistry, The Pennsylvania State University; University Park PA 16802 USA
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University; University Park PA 16802 USA
- The Huck Institute of the Life Sciences, The Pennsylvania State University; University Park PA 16802 USA
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28
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Liu Y, Miao K, Li Y, Fares M, Chen S, Zhang X. A HaloTag-Based Multicolor Fluorogenic Sensor Visualizes and Quantifies Proteome Stress in Live Cells Using Solvatochromic and Molecular Rotor-Based Fluorophores. Biochemistry 2018; 57:4663-4674. [DOI: 10.1021/acs.biochem.8b00135] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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