1
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Luo J, Zhu Z. Sensitive and High-Throughput Time-Resolved Luminescence Detection of Tetracycline in Milk for Eliminating Background Fluorescence on a Miniaturized Apparatus. Anal Chem 2024; 96:11115-11120. [PMID: 38949267 DOI: 10.1021/acs.analchem.4c01508] [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: 07/02/2024]
Abstract
Fluorescence detection has always suffered from high background fluorescence from real samples such as milk. Therefore, cumbersome pretreatments of samples were necessary to remove the fluorescent substances but led to long processing times and low efficiency. Time-resolved luminescence detection is a powerful technique for eliminating short-lived background fluorescence without additional pretreatments. However, the related instruments are usually equipped with high-speed excitation sources and detectors, which are always bulky and expensive. Herein, we developed a low-cost and miniaturized imaging system for high-throughput time-gated luminescence detection. An UV LED array was used to excite multiple samples, the luminescence of which could be detected by a smartphone simultaneously. An analog circuit was designed to synchronize the LED to the mechanical chopper to eliminate the background signals resulting from scattering and short-lived autofluorescence. Compared to other synchronous circuits based on FPGAs and microcontrollers, this analog circuit required no programming and memory. For the first time, high-throughput time-resolved luminescence detection of tetracycline in milk without any separation or enrichment was achieved by utilizing a smartphone as a camera, and the scattered signals and the background fluorescence were eliminated efficiently. The limit of detection reached as low as 53 nM (∼0.024 ppm), lower than the residue limit set by the European Union. This high-throughput time-gated luminescence detection method can be used for quantitative analysis of many real samples with high background fluorescence.
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Affiliation(s)
- Jiahui Luo
- Department of Chemistry and Chemical Engineering, School of Bioengineering and Health, State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China
| | - Zece Zhu
- Department of Chemistry and Chemical Engineering, School of Bioengineering and Health, State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China
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2
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Gao YY, Yang RQ, Lou KL, Dang YY, Dong YY, He YY, Huang WH, Chen M, Zhang GJ. In vivo visualization of fluorescence reflecting CDK4 activity in a breast cancer mouse model. MedComm (Beijing) 2022; 3:e136. [PMID: 35711853 PMCID: PMC9187519 DOI: 10.1002/mco2.136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 03/21/2022] [Accepted: 03/23/2022] [Indexed: 11/06/2022] Open
Abstract
The CDK4/6-Rb axis is a crucial target of cancer therapy and several selective inhibitors of it have been approved for clinical application. However, current therapeutic efficacy evaluation mostly relies on anatomical imaging, which cannot directly reflect changes in drug targets, leading to a delay in the selection of optimal treatment. In this study, we constructed a novel fluorescent probe, CPP30-Lipo/CDKACT4, for real-time monitoring of CDK4 activity and the therapeutic efficacy of its inhibitor in HR+/HER2- breast cancer. CPP30-Lipo/CDKACT4 exhibited good optical stability and targetability. The signal of the probe in living cells decreased after CDK4 knockdown or palbociclib treatment. Moreover, the fluorescence intensity of the tumors after 7 days of palbociclib treatment was significantly lower than that before treatment, while no significant change in tumor diameter was observed under magnetic resonance imaging. Overall, we developed an innovative fluorescent probe that can monitor CDK4 activity and the early therapeutic response to CDK4 inhibitors in living cells and in vivo. It may provide a new strategy for evaluating antitumor therapeutic efficacy in a clinical context and for drug development.
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Affiliation(s)
- Yi-Yang Gao
- Department of Breast and Thyroid Surgery Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University Xiamen China.,Fujian Key Laboratory of Precision Diagnosis and Treatment in Breast Cancer Xiang'an Hospital of Xiamen University, Xiamen University Xiamen China.,Xiamen Key Laboratory of Endocrine-Related Cancer Precision Medicine Xiang'an Hospital of Xiamen University, Xiamen University Xiamen China.,Central Laboratory Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University Xiamen China
| | - Rui-Qin Yang
- Department of Breast and Thyroid Surgery Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University Xiamen China.,Fujian Key Laboratory of Precision Diagnosis and Treatment in Breast Cancer Xiang'an Hospital of Xiamen University, Xiamen University Xiamen China.,Xiamen Key Laboratory of Endocrine-Related Cancer Precision Medicine Xiang'an Hospital of Xiamen University, Xiamen University Xiamen China.,Central Laboratory Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University Xiamen China
| | - Kang-Liang Lou
- Department of Breast and Thyroid Surgery Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University Xiamen China.,Fujian Key Laboratory of Precision Diagnosis and Treatment in Breast Cancer Xiang'an Hospital of Xiamen University, Xiamen University Xiamen China.,Xiamen Key Laboratory of Endocrine-Related Cancer Precision Medicine Xiang'an Hospital of Xiamen University, Xiamen University Xiamen China.,Central Laboratory Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University Xiamen China
| | - Yong-Ying Dang
- Department of Breast and Thyroid Surgery Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University Xiamen China.,Fujian Key Laboratory of Precision Diagnosis and Treatment in Breast Cancer Xiang'an Hospital of Xiamen University, Xiamen University Xiamen China.,Xiamen Key Laboratory of Endocrine-Related Cancer Precision Medicine Xiang'an Hospital of Xiamen University, Xiamen University Xiamen China.,Central Laboratory Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University Xiamen China
| | - Yuan-Yuan Dong
- Department of Breast and Thyroid Surgery Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University Xiamen China.,Fujian Key Laboratory of Precision Diagnosis and Treatment in Breast Cancer Xiang'an Hospital of Xiamen University, Xiamen University Xiamen China.,Xiamen Key Laboratory of Endocrine-Related Cancer Precision Medicine Xiang'an Hospital of Xiamen University, Xiamen University Xiamen China.,Central Laboratory Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University Xiamen China
| | - Yue-Yang He
- Department of Breast and Thyroid Surgery Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University Xiamen China.,Fujian Key Laboratory of Precision Diagnosis and Treatment in Breast Cancer Xiang'an Hospital of Xiamen University, Xiamen University Xiamen China.,Xiamen Key Laboratory of Endocrine-Related Cancer Precision Medicine Xiang'an Hospital of Xiamen University, Xiamen University Xiamen China.,Central Laboratory Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University Xiamen China
| | - Wen-He Huang
- Department of Breast and Thyroid Surgery Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University Xiamen China.,Fujian Key Laboratory of Precision Diagnosis and Treatment in Breast Cancer Xiang'an Hospital of Xiamen University, Xiamen University Xiamen China.,Xiamen Key Laboratory of Endocrine-Related Cancer Precision Medicine Xiang'an Hospital of Xiamen University, Xiamen University Xiamen China.,Xiamen Research Center of Clinical Medicine in Breast and Thyroid Cancers Xiang'an Hospital of Xiamen University, Xiamen University Xiamen China
| | - Min Chen
- Xiamen Key Laboratory of Endocrine-Related Cancer Precision Medicine Xiang'an Hospital of Xiamen University, Xiamen University Xiamen China.,Central Laboratory Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University Xiamen China.,Cancer Research Center of Xiamen University School of Medicine, Xiamen University Xiamen China
| | - Guo-Jun Zhang
- Department of Breast and Thyroid Surgery Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University Xiamen China.,Fujian Key Laboratory of Precision Diagnosis and Treatment in Breast Cancer Xiang'an Hospital of Xiamen University, Xiamen University Xiamen China.,Xiamen Key Laboratory of Endocrine-Related Cancer Precision Medicine Xiang'an Hospital of Xiamen University, Xiamen University Xiamen China.,Xiamen Research Center of Clinical Medicine in Breast and Thyroid Cancers Xiang'an Hospital of Xiamen University, Xiamen University Xiamen China.,Cancer Research Center of Xiamen University School of Medicine, Xiamen University Xiamen China
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3
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Deng Q, Liu Y, Zhu Z, Shu X. Microsecond-resolved smartphone time-gated luminescence spectroscopy. OPTICS LETTERS 2022; 47:3427-3430. [PMID: 35838696 DOI: 10.1364/ol.467458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 06/12/2022] [Indexed: 06/15/2023]
Abstract
Time-gated luminescence spectra are usually measured by laboratory instruments equipped with high-speed excitation sources and spectrometers, which are always bulky and expensive. To reduce the reliance on expensive laboratory instruments, we demonstrate the first, to the best of our knowledge, use of a smartphone for the detection of time-gated luminescence spectra. A mechanical chopper is used as the detection shutter and an optical switch is placed at the edge of the wheel to convert the chopping signal into a transistor-transistor logic (TTL) signal which is used to control the excitation source and achieve synchronization. The time-gated luminescence spectra at different delay times of Eu(TTA)3 powder and the solutions of Eu-tetracycline complex are successfully detected with a temporal resolution of tens of microseconds by the proposed approach. We believe our approach offers a route toward portable instruments for the measurement of luminescence spectra and lifetimes.
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4
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Zhang W, Li J, Zhao N, Li P, Zhang W, Wang H, Tang B. Ratiometric fluorescence biosensor for imaging of protein phosphorylation levels in atherosclerosis mice. Anal Chim Acta 2022; 1208:339825. [PMID: 35525587 DOI: 10.1016/j.aca.2022.339825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 03/23/2022] [Accepted: 04/08/2022] [Indexed: 12/29/2022]
Abstract
Atherosclerosis (AS) is the main cause of coronary heart disease, cerebral infarction and peripheral vascular disease, which is an important disease threatening human health. Abnormal levels of protein phosphorylation are closely related to the occurrence and development of diseases. Herein, the ratiometric fluorescence nanosensor (PCN/W- B@BSA) was prepared by using metal-organic frameworks (PCN-224) and fluorescent nanocluster wool-balls, which was applied for ratiometric fluorescence imaging of protein phosphorylation level in the AS mice model. Specific recognition of phosphorylation sites was achieved via specific interaction between active center Zr(IV) and phosphate. Using the two-photon property of porphyrin, the background is significantly reduced, and the sensitivity of imaging analysis is improved by combining with ratio imaging. Bovine serum albumin (BSA) was used to modify the surface of the nanosensor to reduce the non-specific adsorption and improve the biocompatibility of the nanosensor. Finally, the fluorescence nanosensor was successfully apply to fluorescence imaging of protein phosphorylation level in AS mice model, and the results showed that the protein phosphorylation level in the AS mice model was lower than that of the normal mice. The present study provides suitable fluorescence tool for further revealing phosphorylation related signaling pathways and disease mechanisms.
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Affiliation(s)
- Wei Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University, Jinan, 250014, PR China.
| | - Jin Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University, Jinan, 250014, PR China
| | - Na Zhao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University, Jinan, 250014, PR China
| | - Ping Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University, Jinan, 250014, PR China
| | - Wen Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University, Jinan, 250014, PR China
| | - Hui Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University, Jinan, 250014, PR China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University, Jinan, 250014, PR China
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5
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Zhou X, Mehta S, Zhang J. AktAR and Akt-STOPS: Genetically Encodable Molecular Tools to Visualize and Perturb Akt Kinase Activity at Different Subcellular Locations in Living Cells. Curr Protoc 2022; 2:e416. [PMID: 35532280 PMCID: PMC9093046 DOI: 10.1002/cpz1.416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The serine/threonine protein kinase Akt integrates diverse upstream inputs to regulate cell survival, growth, metabolism, migration, and differentiation. Mounting evidence suggests that Akt activity is differentially regulated depending on its subcellular location, which can include the plasma membrane, endomembrane, and nuclear compartment. This spatial control of Akt activity is critical for achieving signaling specificity and proper physiological functions, and deregulation of compartment-specific Akt signaling is implicated in various diseases, including cancer and diabetes. Understanding the spatial coordination of the signaling network centered around this key kinase and the underlying regulatory mechanisms requires precise tracking of Akt activity at distinct subcellular compartments within its native biological contexts. To address this challenge, new molecular tools are being developed, enabling us to directly interrogate the spatiotemporal regulation of Akt in living cells. These include, for instance, the newly developed genetically encodable fluorescent-protein-based Akt kinase activity reporter (AktAR2), which serves as a substrate surrogate of Akt kinase and translates Akt-specific phosphorylation into a quantifiable change in Förster resonance energy transfer (FRET). In addition, we developed the Akt substrate tandem occupancy peptide sponge (Akt-STOPS), which allows biochemical perturbation of subcellular Akt activity. Both molecular tools can be readily targeted to distinct subcellular localizations. Here, we describe a workflow to study Akt kinase activity at different subcellular locations in living cells. We provide a protocol for using genetically targeted AktAR2 and Akt-STOPS, along with fluorescence imaging in living NIH3T3 cells, to visualize and perturb, respectively, the activity of endogenous Akt kinase at different subcellular compartments. We further describe a protocol for using chemically inducible dimerization (CID) to control the plasma membrane-specific inhibition of Akt activity in real time. Lastly, we describe a protocol for maintaining NIH3T3 cells in culture, a cell line known to exhibit robust Akt activity. In all, this approach enables interrogation of spatiotemporal regulation and functions of Akt, as well as the intricate signaling networks in which it is embedded, at specific subcellular locations. © 2022 Wiley Periodicals LLC. Basic Protocol 1: Visualizing and perturbing subcellular Akt kinase activity using AktAR and Akt-STOPS Basic Protocol 2: Using chemically inducible dimerization (CID) to control inhibition of Akt at the plasma membrane Support Protocol: Maintaining NIH3T3 cells in culture.
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Affiliation(s)
- Xin Zhou
- Department of Pharmacology, University of California, San Diego, La Jolla, California
| | - Sohum Mehta
- Department of Pharmacology, University of California, San Diego, La Jolla, California
| | - Jin Zhang
- Department of Pharmacology, University of California, San Diego, La Jolla, California.,Department of Chemistry & Biochemistry, University of California, San Diego, La Jolla, California.,Department of Bioengineering, University of California, San Diego, La Jolla, California
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6
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Morris MC. A Toolbox of Fluorescent Peptide Biosensors to Highlight Protein Kinases in Complex Samples : focus on cyclin‐dependent kinases. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- May Catherine Morris
- IBMM-UMR5247 Peptide & Proteins Faculté de Pharmacie,15 Av. Charles Flahault 34093 Montpellier FRANCE
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7
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Jena S, Parker LL. Fluorescence Lifetime Imaging Probes for Cell-Based Measurements of Enzyme Activity. Methods Mol Biol 2022; 2394:133-162. [PMID: 35094326 PMCID: PMC10041689 DOI: 10.1007/978-1-0716-1811-0_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Posttranslational modification (PTM) enzymes are important modulators of protein structure and function. They typically act by chemically modifying amino acids, often on side chain functional groups, to change the physiochemical landscape of the protein and thus its biophysical behavior. In particular, protein kinases are enzymes that transfer phosphate from ATP to serine, threonine, or tyrosine in protein substrates. They are key regulators of vital cellular pathways such as survival, proliferation, and apoptosis, and their dysregulation in the context of cancer has been widely investigated for the purpose of development of anticancer drugs. However, several critical questions pertaining to their physiology, such as heterogeneity of kinase signaling within and between cells, and other factors that may play into the mechanisms of drug resistance, remain unanswered. Many of the current strategies to measure kinase activity lack the scope, subcellular resolution, and real-time monitoring ability needed to obtain the type of information needed about their dynamics and localization in cells. While FRET-based biosensors are capable of dynamic single cell imaging, their applications can be limited by difficulties in multiplexing and the inherent inadequacies of steady state measurements. In this chapter, we describe our fluorescence lifetime imaging microscopy (FLIM) probe technology in which peptide kinase substrates, linked to cell-penetrating peptides and labeled with small molecule fluorophores, are used to report kinase activity through time-resolved fluorescence imaging to visualize and quantify changes to the probe's fluorescence lifetime. These can be multiplexed for more than one kinase at a time, and interpretation is not affected by differences in local intensity due to probe uptake and distribution or photobleaching. With careful choice of peptide substrate(s), fluorophore label, and imaging set-up, high specificity and spatiotemporal resolution can be achieved. Due to the mechanism by which the lifetime change occurs, this approach is compatible with other PTMs (such as acetylation, methylation), and so the considerations for kinase FLIM probe design described in this chapter should be broadly applicable for other PTMs as well.
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8
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Zhao Y, Shi L, Miao H, Jing X. “Add on” Dual-Modal Optical Immunoassay by Plasmonic Metal NP-Semiconductor Composites. Anal Chem 2021; 93:3250-3257. [DOI: 10.1021/acs.analchem.0c04856] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yuan Zhao
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Lixia Shi
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Hongyan Miao
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Xiaohui Jing
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
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9
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Yan Z, Xue J, Zhou M, Wang J, Zhang Y, Wang Y, Qiao J, He Y, Li P, Zhang S, Zhang X. Dynamic Monitoring of Phase-Separated Biomolecular Condensates by Photoluminescence Lifetime Imaging. Anal Chem 2021; 93:2988-2995. [PMID: 33512148 DOI: 10.1021/acs.analchem.0c05011] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The formation of biomolecular condensates is driven by liquid-liquid phase separation, which is prevalent in cells to govern crucial cellular functions. However, understanding the properties of phase-separated condensates remains very challenging for the lack of suitable techniques. Here, we report a photoluminescence lifetime imaging method for real-time monitoring of phase-separated condensates, both in vitro and in living cells, using a microsecond-scale photoluminescence lifetime probe based on iridium complex. The probe has a large Stokes shift, excellent cell permeability, and minimal cell autofluorescence interference. With this method, the dynamic process of phase separation of fused in sarcoma protein has been well explored, showing high spatiotemporal resolution and high throughput. Beginning with initial formation, the protein droplets get bigger and more viscous, and then a final maturation to solidified aggregates has been characterized. This study paves the path for a deeper understanding of the properties of phase-separated biomolecular condensates.
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Affiliation(s)
- Zihe Yan
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Jianfeng Xue
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Min Zhou
- Beijing Advanced Innovation Center for Structural Biology, Beijing Frontier Research Center for Biological Structure, School of Life Sciences, Tsinghua University, Beijing 100084, China.,Tsinghua-Peking Joint Center for Life Sciences, Beijing 100084, China
| | - Jinyu Wang
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yanxin Zhang
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yuan Wang
- Beijing Advanced Innovation Center for Structural Biology, Beijing Frontier Research Center for Biological Structure, School of Life Sciences, Tsinghua University, Beijing 100084, China.,Tsinghua-Peking Joint Center for Life Sciences, Beijing 100084, China
| | - Juan Qiao
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yan He
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Pilong Li
- Beijing Advanced Innovation Center for Structural Biology, Beijing Frontier Research Center for Biological Structure, School of Life Sciences, Tsinghua University, Beijing 100084, China.,Tsinghua-Peking Joint Center for Life Sciences, Beijing 100084, China
| | - Sichun Zhang
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Xinrong Zhang
- Department of Chemistry, Tsinghua University, Beijing 100084, China
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10
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Jena S, Damayanti NP, Tan J, Pratt ED, Irudayaraj JMK, Parker LL. Multiplexable fluorescence lifetime imaging (FLIM) probes for Abl and Src-family kinases. Chem Commun (Camb) 2020; 56:13409-13412. [PMID: 33035286 DOI: 10.1039/d0cc05030j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Many commonly employed strategies to map kinase activities in live cells require expression of genetically encoded proteins (e.g. FRET sensors). In this work, we describe the development and preliminary application of a set of cell-penetrating, fluorophore labelled peptide substrates for fluorescence lifetime imaging (FLIM) of Abl and Src-family kinase activities. These probes do not rely on FRET pairs or genetically-encoded protein expression. We further demonstrate probe multiplexing and pixel-by-pixel quantification to estimate the relative proportion of modified probe, suggesting that this strategy will be useful for detailed mapping of single cell and subcellular dynamics of multiple kinases concurrently in live cells.
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Affiliation(s)
- Sampreeti Jena
- Department of Biochemistry, Molecular Biology and Biophysics, Masonic Cancer Center, University of Minnesota, Minneapolis, 55455, USA.
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11
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Zhang X, Mariano CF, Ando Y, Shen K. Bioengineering tools for probing intracellular events in T lymphocytes. WIREs Mech Dis 2020; 13:e1510. [PMID: 33073545 DOI: 10.1002/wsbm.1510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/14/2020] [Accepted: 09/16/2020] [Indexed: 11/11/2022]
Abstract
T lymphocytes are the central coordinator and executor of many immune functions. The activation and function of T lymphocytes are mediated through the engagement of cell surface receptors and regulated by a myriad of intracellular signaling network. Bioengineering tools, including imaging modalities and fluorescent probes, have been developed and employed to elucidate the cellular events throughout the functional lifespan of T cells. A better understanding of these events can broaden our knowledge in the immune systems biology, as well as accelerate the development of effective diagnostics and immunotherapies. Here we review the commonly used and recently developed techniques and probes for monitoring T lymphocyte intracellular events, following the order of intracellular events in T cells from activation, signaling, metabolism to apoptosis. The techniques introduced here can be broadly applied to other immune cells and cell systems. This article is categorized under: Immune System Diseases > Molecular and Cellular Physiology Immune System Diseases > Biomedical Engineering Infectious Diseases > Biomedical Engineering.
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Affiliation(s)
- Xinyuan Zhang
- Department of Biomedical Engineering, University of Southern California, Los Angeles, California, USA
| | - Chelsea F Mariano
- Department of Biomedical Engineering, University of Southern California, Los Angeles, California, USA
| | - Yuta Ando
- Department of Biomedical Engineering, University of Southern California, Los Angeles, California, USA
| | - Keyue Shen
- Department of Biomedical Engineering, University of Southern California, Los Angeles, California, USA.,Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California, USA.,USC Stem Cell, University of Southern California, Los Angeles, California, USA
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12
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Deng Q, Zhu Z, Shu X. Auto-Phase-Locked Time-Resolved Luminescence Detection: Principles, Applications, and Prospects. Front Chem 2020; 8:562. [PMID: 32695750 PMCID: PMC7339960 DOI: 10.3389/fchem.2020.00562] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 06/02/2020] [Indexed: 11/23/2022] Open
Abstract
Time-resolved luminescence measurement is a useful technique which can eliminate the background signals from scattering and short-lived autofluorescence. However, the relative instruments always require pulsed excitation sources and high-speed detectors. Moreover, the excitation and detecting shutter should be precisely synchronized by electronic phase matching circuitry, leading to expensiveness and high-complexity. To make time-resolved luminescence instruments simple and cheap, the automatic synchronization method was developed by using a mechanical chopper acted as both of the pulse generator and detection shutter. Therefore, the excitation and detection can be synchronized and locked automatically as the optical paths fixed. In this paper, we first introduced the time-resolved luminescence measurements and review the progress and current state of this field. Then, we discussed low-cost time-resolved techniques, especially chopper-based time-resolved luminescence detections. After that, we focused on auto-phase-locked method and some of its meaningful applications, such as time-gated luminescence imaging, spectrometer, and luminescence lifetime detection. Finally, we concluded with a brief outlook for auto-phase-locked time-resolved luminescence detection systems.
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Affiliation(s)
| | - Zece Zhu
- Wuhan National Laboratory for Optoelectronics & School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China
| | - Xuewen Shu
- Wuhan National Laboratory for Optoelectronics & School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China
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13
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Xie Y, Arno MC, Husband JT, Torrent-Sucarrat M, O’Reilly RK. Manipulating the fluorescence lifetime at the sub-cellular scale via photo-switchable barcoding. Nat Commun 2020; 11:2460. [PMID: 32424138 PMCID: PMC7235003 DOI: 10.1038/s41467-020-16297-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 04/20/2020] [Indexed: 11/09/2022] Open
Abstract
AbstractFluorescent barcoding is a pivotal technique for the investigation of the microscale world, from information storage to the monitoring of dynamic biochemical processes. Using fluorescence lifetime as the readout modality offers more reproducible and quantitative outputs compared to conventional fluorescent barcoding, being independent of sample concentration and measurement methods. However, the use of fluorescence lifetime in this area has been limited by the lack of strategies that provide spatiotemporal manipulation of the coding process. In this study, we design a two-component photo-switchable nanogel that exhibits variable fluorescence lifetime upon photoisomerization-induced energy transfer processes through light irradiation. This remotely manipulated fluorescence lifetime property could be visually mapped using fluorescence lifetime imaging microscopy (FLIM), allowing selective storage and display of information at the microscale. Most importantly, the reversibility of this system further provides a strategy for minimizing the background influence in fluorescence lifetime imaging of live cells and sub-cellular organelles.
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14
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Deng Q, Zhu Z, Shu X. Spectrally resolved luminescence lifetime detection for measuring the energy splitting of the long-lived excited states. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 224:117434. [PMID: 31394392 DOI: 10.1016/j.saa.2019.117434] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 07/26/2019] [Accepted: 07/27/2019] [Indexed: 06/10/2023]
Abstract
Molecular motion plays an important role in the reverse intersystem crossing of thermally activated delayed fluorescence (TADF) materials, since the conformation varies as the molecule vibrates, leading to potential changes in the energies of excited states. Although many theoretical simulations have researched the relationship between the excited states and the molecular conformations, there are still few experimental results showing the energy level difference between different long-lived excited states. Herein, a novel method for measuring spectrally resolved luminescence lifetimes is proposed to detect the energy splitting of the long-lived excited states of a classical TADF molecule, BTZ-DMAC. A set of the time-gated luminescence spectra with different delay times were captured by a spectrograph equipped on an auto-phase-locked system, and then used for lifetime analysis at each wavelength. Unlike traditional measurement techniques, the proposed novel method does not require ultrafast laser, high-speed detector and any phase matching circuitry, thus significantly reducing the cost. This method revealed a definite energy gap between the two excited states of BTZ-DMAC with different lifetimes, indicating different conformations caused by molecular vibration. This low-cost method could be also used to detect many other luminescence materials for investigating the detail mechanisms of multiple excited states.
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Affiliation(s)
- Qisheng Deng
- Wuhan National Laboratory for Optoelectronics & School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Zece Zhu
- Wuhan National Laboratory for Optoelectronics & School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Xuewen Shu
- Wuhan National Laboratory for Optoelectronics & School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China.
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15
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Kruk M, Widstrom N, Jena S, Wolter NL, Blankenhorn JF, Abdalla I, Yang TY, Parker LL. Assays for tyrosine phosphorylation in human cells. Methods Enzymol 2019; 626:375-406. [PMID: 31606083 DOI: 10.1016/bs.mie.2019.06.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Tyrosine kinases are important for many cellular processes and disruption of their regulation is a factor in diseases like cancer, therefore they are a major target of anticancer drugs. There are many ways to measure tyrosine kinase activity in cells by monitoring endogenous substrate phosphorylation, or by using peptide substrates and incubating them with cell lysates containing active kinases. However, most of these strategies rely on antibodies and/or are limited in how accurately they model the intracellular environment. In cases in which activity needs to be measured in cells, but endogenous substrates are not known and/or suitable phosphospecific antibodies are not available, cell-deliverable peptide substrates can be an alternative and can provide information on activation and inhibition of kinases in intact, live cells. In this chapter, we review this methodology and provide a protocol for measuring Abl kinase activity in human cells using enzyme-linked immunosorbent assay (ELISA) with a generic antiphosphotyrosine antibody for detection.
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Affiliation(s)
- Monica Kruk
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, United States
| | - Naomi Widstrom
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, United States
| | - Sampreeti Jena
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, United States
| | - Nicole L Wolter
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, United States
| | - John F Blankenhorn
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, United States
| | - Ibrahim Abdalla
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, United States
| | - Tzu-Yi Yang
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, United States
| | - Laurie L Parker
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, United States.
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16
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Damayanti NP, Buno K, Voytik Harbin SL, Irudayaraj JMK. Epigenetic Process Monitoring in Live Cultures with Peptide Biosensors. ACS Sens 2019; 4:562-565. [PMID: 30714727 DOI: 10.1021/acssensors.8b01134] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Acetyltransferase is a member of the transferase group responsible for transferring an acetyl group from acetyl-CoA to amino group of a histone lysine residue. Past efforts on histone acetylation monitoring involved biochemical analysis that do not provide spatiotemporal information in a dynamic format. We propose a novel approach to monitor acetyltransferase acetylation in live single cells using time correlated single photon counting fluorescence lifetime imaging (TCSPC-FLIM) with peptide biosensors. Utilizing 2D and 3D cultures we show that the peptide sensor has a specific response to acetyltransferase enzyme activity in a fluorescence lifetime dependent manner ( P < 0.001). Our FLIM biosensor concept enables real-time longitudinal measurement of acetylation activity with high spatial and temporal resolution in live single cells to monitor cell function or evaluate drug effects to treat cancer or neurological diseases.
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Affiliation(s)
- Nur P. Damayanti
- Department of Agricultural and Biological Engineering, College of Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Kevin Buno
- Weldon School of Biomedical Engineering, Collage of Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Sherry L. Voytik Harbin
- Weldon School of Biomedical Engineering, Collage of Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Joseph M. K. Irudayaraj
- Department of
Bioengineering, Cancer Center at Illinois, University of Illinois
at Urbana−Champaign, Biomedical Research Center, Carle Foundation
Hospital, Urbana, Illinois 61801, United States
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17
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Kuang L, Damayanti NP, Jiang C, Fei X, Liu W, Narayanan N, Irudayaraj J, Campanella O, Deng M. Bioinspired glycosaminoglycan hydrogels via click chemistry for 3D dynamic cell encapsulation. J Appl Polym Sci 2019; 136:47212. [PMID: 31534270 PMCID: PMC6749605 DOI: 10.1002/app.47212] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 09/13/2018] [Indexed: 12/25/2022]
Abstract
Cell encapsulation within 3D hydrogels is an attractive approach to develop effective cell-based therapies. However, little is known about how cells respond to the dynamic microenvironment resulting from hydrogel gelation-based cell encapsulation. Here, a tunable biomimetic hydrogel system that possesses alterable gelation kinetics and biologically relevant matrix stiffness is developed to study 3D dynamic cellular responses during encapsulation. Hydrogels are synthesized by cross-linking thiolated hyaluronic acid and thiolated chondroitin sulfate with polyethylene glycol diacrylate under cell-compatible conditions. Hydrogel properties are tailored by altering thiol substitution degrees of glycosaminoglycans or molecular weights of cross-linkers. Encapsulation of human mesenchymal stem cells through hydrogel gelation reveals high cell viability as well as a three-stage gelation-dependent cellular response in real-time focal adhesion kinase (FAK) phosphorylation in live single cells. Furthermore, stiffer hydrogels result in higher equilibrium FAK activity and enhanced actin protrusions. Our results demonstrate the promise of hydrogel-mediated cellular responses during cell encapsulation.
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Affiliation(s)
- Liangju Kuang
- Department of Agricultural and Biological Engineering,
Purdue University, West Lafayette, IN 47907, USA
- Bindley Bioscience Center, Purdue University, West
Lafayette, IN 47907, USA
| | - Nur P. Damayanti
- Department of Agricultural and Biological Engineering,
Purdue University, West Lafayette, IN 47907, USA
- Bindley Bioscience Center, Purdue University, West
Lafayette, IN 47907, USA
| | - Chunhui Jiang
- Department of Agricultural and Biological Engineering,
Purdue University, West Lafayette, IN 47907, USA
- Bindley Bioscience Center, Purdue University, West
Lafayette, IN 47907, USA
| | - Xing Fei
- Department of Agricultural and Biological Engineering,
Purdue University, West Lafayette, IN 47907, USA
| | - Wenjie Liu
- Department of Agricultural and Biological Engineering,
Purdue University, West Lafayette, IN 47907, USA
- Bindley Bioscience Center, Purdue University, West
Lafayette, IN 47907, USA
| | - Naagarajan Narayanan
- Department of Agricultural and Biological Engineering,
Purdue University, West Lafayette, IN 47907, USA
- Bindley Bioscience Center, Purdue University, West
Lafayette, IN 47907, USA
| | - Joseph Irudayaraj
- Department of Agricultural and Biological Engineering,
Purdue University, West Lafayette, IN 47907, USA
- Bindley Bioscience Center, Purdue University, West
Lafayette, IN 47907, USA
| | - Osvaldo Campanella
- Department of Agricultural and Biological Engineering,
Purdue University, West Lafayette, IN 47907, USA
| | - Meng Deng
- Department of Agricultural and Biological Engineering,
Purdue University, West Lafayette, IN 47907, USA
- Bindley Bioscience Center, Purdue University, West
Lafayette, IN 47907, USA
- School of Materials Engineering, Purdue University, West
Lafayette, IN 47907, USA
- Weldon School of Biomedical Engineering, Purdue University,
West Lafayette, IN 47907, USA
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18
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Zhu Z. Smartphone-based apparatus for measuring upconversion luminescence lifetimes. Anal Chim Acta 2018; 1054:122-127. [PMID: 30712582 DOI: 10.1016/j.aca.2018.12.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 12/01/2018] [Accepted: 12/07/2018] [Indexed: 11/15/2022]
Abstract
Luminescence lifetime detection plays an important role in time-resolved detection and research. However, the traditional instruments always require expensive detectors such as time-correlated single photon counter or streak camera. Herein, a low-cost and miniaturized apparatus for measuring upconversion luminescence lifetimes was developed by using a smartphone equipped with a 980 nm CW laser and a motor. When the motor was driving the sample circling at a high linear velocity, the excited sample would emit a luminescence arc, which could be photographed by the phone camera. The rotating rate could be measured by a tuner APP and then used for transferring arc length to delay times. By analyzing the grayscale distribution of the luminescence arc, the luminescence decay curve was obtained, which was then used for exponential fit and calculating lifetimes. The images captured by different smartphones revealed similar lifetime values, suggesting a wide universality of this method. The whole system was not only remarkably cheaper but also more miniaturized than traditional instruments for measuring luminescence lifetimes, indicating the promising applications in point of care testing for time-resolved luminescence detection for bioanalysis and disease diagnosis.
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Affiliation(s)
- Zece Zhu
- Wuhan National Laboratory for Optoelectronics & School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China.
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19
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Mainz ER, Wang Q, Lawrence DS, Allbritton NL. An Integrated Chemical Cytometry Method: Shining a Light on Akt Activity in Single Cells. Angew Chem Int Ed Engl 2018; 55:13095-13098. [PMID: 27647713 DOI: 10.1002/anie.201606914] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Revised: 08/20/2016] [Indexed: 12/17/2022]
Abstract
Tools to evaluate oncogenic kinase activity in small clinical samples have the power to guide precision medicine in oncology. Existing platforms have demonstrated impressive insights into the activity of protein kinases, but these technologies are unsuitable for the study of kinase behavior in large numbers of primary human cells. To address these limitations, we developed an integrated analysis system that utilizes a light-programmable, cell-permeable reporter deliverable simultaneously to many cells. The reporter's ability to act as a substrate for Akt, a key oncogenic kinase, was masked by a 2-4,5-dimethoxy 2-nitrobenzyl (DMNB) moiety. Upon exposure to ultraviolet light and release of the masking moiety, the substrate sequence enabled programmable reaction times within the cell cytoplasm. When coupled to automated single-cell capillary electrophoresis, statistically significant numbers of primary human cells were readily evaluated for Akt activity.
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Affiliation(s)
- Emilie R Mainz
- Department of Chemistry, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Qunzhao Wang
- Department of Chemistry, Division of Chemical Biology and Medicinal Chemistry and Department of Pharmacology, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - David S Lawrence
- Department of Chemistry, Division of Chemical Biology and Medicinal Chemistry and Department of Pharmacology, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Nancy L Allbritton
- Department of Chemistry and Pharmacology, University of North Carolina, Chapel Hill, NC, 27599, USA. .,Joint Department of Biomedical Engineering, University of North Carolina and North Carolina State University, Chapel Hill and Raleigh, NC, USA.
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20
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González-Vera JA, Bouzada D, Bouclier C, Eugenio Vázquez M, Morris MC. Lanthanide-based peptide biosensor to monitor CDK4/cyclin D kinase activity. Chem Commun (Camb) 2018; 53:6109-6112. [PMID: 28530267 DOI: 10.1039/c6cc09948c] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We describe a lanthanide biosensor that responds to CDK4 kinase activity in melanoma cell extracts through a significant and dose dependent increase in luminescence, thanks to sensitization of a DOTA[Tb3+] complex incorporated into a CDK4 substrate peptide by a unique tryptophan residue in an adjacent phosphoaminoacid binding moiety.
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Affiliation(s)
- Juan A González-Vera
- Institut des Biomolécules Max Mousseron, CNRS, IBMM-UMR 5247, Université de Montpellier, 15 Av. Charles Flahault, 34093 Montpellier, France.
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21
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Dissection of Protein Kinase Pathways in Live Cells Using Photoluminescent Probes: Surveillance or Interrogation? CHEMOSENSORS 2018. [DOI: 10.3390/chemosensors6020019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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22
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Wang J, Xue J, Yan Z, Zhang S, Qiao J, Zhang X. Photoluminescence Lifetime Imaging of Synthesized Proteins in Living Cells Using an Iridium-Alkyne Probe. Angew Chem Int Ed Engl 2017; 56:14928-14932. [PMID: 28941246 DOI: 10.1002/anie.201708566] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 09/20/2017] [Indexed: 12/20/2022]
Abstract
Designing probes for real-time imaging of dynamic processes in living cells is a continuous challenge. Herein, a novel near-infrared (NIR) photoluminescence probe having a long lifetime was exploited for photoluminescence lifetime imaging (PLIM) using an iridium-alkyne complex. This probe offers the benefits of deep-red to NIR emission, a long Stokes shift, excellent cell penetration, low cytotoxicity, and good resistance to photobleaching. This example is the first PLIM probe applicable to the click reaction of copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) with remarkable lifetime shifts of 414 ns, before and after click reaction. The approach fully eliminates the background interference and distinguishes the reacted probes from the unreacted probes, thus enabling the wash-free imaging of the newly synthesized proteins within single living cells. Based on the unique properties of the iridium complexes, it is anticipated to have applications for imaging other processes within living cells.
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Affiliation(s)
- Jinyu Wang
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Jie Xue
- Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Zihe Yan
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Sichun Zhang
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Juan Qiao
- Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Xinrong Zhang
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Department of Chemistry, Tsinghua University, Beijing, 100084, China
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23
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Wang J, Xue J, Yan Z, Zhang S, Qiao J, Zhang X. Photoluminescence Lifetime Imaging of Synthesized Proteins in Living Cells Using an Iridium-Alkyne Probe. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708566] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jinyu Wang
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Department of Chemistry; Tsinghua University; Beijing 100084 China
| | - Jie Xue
- Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry; Tsinghua University; Beijing 100084 China
| | - Zihe Yan
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Department of Chemistry; Tsinghua University; Beijing 100084 China
| | - Sichun Zhang
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Department of Chemistry; Tsinghua University; Beijing 100084 China
| | - Juan Qiao
- Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry; Tsinghua University; Beijing 100084 China
| | - Xinrong Zhang
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Department of Chemistry; Tsinghua University; Beijing 100084 China
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24
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Adelaiye-Ogala R, Budka J, Damayanti NP, Arrington J, Ferris M, Hsu CC, Chintala S, Orillion A, Miles KM, Shen L, Elbanna M, Ciamporcero E, Arisa S, Pettazzoni P, Draetta GF, Seshadri M, Hancock B, Radovich M, Kota J, Buck M, Keilhack H, McCarthy BP, Persohn SA, Territo PR, Zang Y, Irudayaraj J, Tao WA, Hollenhorst P, Pili R. EZH2 Modifies Sunitinib Resistance in Renal Cell Carcinoma by Kinome Reprogramming. Cancer Res 2017; 77:6651-6666. [PMID: 28978636 DOI: 10.1158/0008-5472.can-17-0899] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 08/22/2017] [Accepted: 09/25/2017] [Indexed: 12/20/2022]
Abstract
Acquired and intrinsic resistance to receptor tyrosine kinase inhibitors (RTKi) represents a major hurdle in improving the management of clear cell renal cell carcinoma (ccRCC). Recent reports suggest that drug resistance is driven by tumor adaptation via epigenetic mechanisms that activate alternative survival pathways. The histone methyl transferase EZH2 is frequently altered in many cancers, including ccRCC. To evaluate its role in ccRCC resistance to RTKi, we established and characterized a spontaneously metastatic, patient-derived xenograft model that is intrinsically resistant to the RTKi sunitinib, but not to the VEGF therapeutic antibody bevacizumab. Sunitinib maintained its antiangiogenic and antimetastatic activity but lost its direct antitumor effects due to kinome reprogramming, which resulted in suppression of proapoptotic and cell-cycle-regulatory target genes. Modulating EZH2 expression or activity suppressed phosphorylation of certain RTKs, restoring the antitumor effects of sunitinib in models of acquired or intrinsically resistant ccRCC. Overall, our results highlight EZH2 as a rational target for therapeutic intervention in sunitinib-resistant ccRCC as well as a predictive marker for RTKi response in this disease. Cancer Res; 77(23); 6651-66. ©2017 AACR.
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Affiliation(s)
- Remi Adelaiye-Ogala
- Department of Cancer Pathology and Prevention, University at Buffalo, Buffalo, New York
- Department of Pharmacology and Toxicology, Indiana University, Indianapolis, Indiana
| | - Justin Budka
- Medical Sciences, Indiana University, Bloomington, Indiana
| | - Nur P Damayanti
- Department of Biomedical Engineering, Purdue University, West Lafayette, Indiana
| | - Justine Arrington
- Department of Biochemistry, Purdue University, West Lafayette, Indiana
| | - Mary Ferris
- Medical Sciences, Indiana University, Bloomington, Indiana
| | - Chuan-Chih Hsu
- Department of Biochemistry, Purdue University, West Lafayette, Indiana
| | | | - Ashley Orillion
- Department of Pharmacology and Toxicology, Indiana University, Indianapolis, Indiana
- Department of Cellular and Molecular Biology, University at Buffalo, Buffalo, New York
| | - Kiersten Marie Miles
- Center for Personalized Medicine, Roswell Park Cancer Institute, New York, New York
| | - Li Shen
- Department of Medicine, Roswell Park Cancer Institute, New York, New York
| | - May Elbanna
- Department of Pharmacology and Toxicology, Indiana University, Indianapolis, Indiana
| | - Eric Ciamporcero
- Department of Medicine and Experimental Oncology, University of Turin, Turin, Italy
| | - Sreevani Arisa
- Department of Medicine, Indiana University, Indianapolis, Indiana
| | - Piergiorgio Pettazzoni
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Giulio F Draetta
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Mukund Seshadri
- Department of Pharmacology and Therapeutics, Roswell Park Cancer Institute, New York, New York
| | - Bradley Hancock
- Department of Surgery, Indiana University, Indianapolis, Indiana
| | - Milan Radovich
- Department of Surgery, Indiana University, Indianapolis, Indiana
| | - Janaiah Kota
- Department of Medical and Molecular Genetics, Indiana University, Indianapolis, Indiana
| | - Michael Buck
- Center of Excellence in Bioinformatics and Life Sciences, University at Buffalo, Buffalo, New York
| | | | - Brian P McCarthy
- Department of Radiology and Imaging Sciences, Indiana University, Indianapolis, Indiana
| | - Scott A Persohn
- Department of Radiology and Imaging Sciences, Indiana University, Indianapolis, Indiana
| | - Paul R Territo
- Department of Radiology and Imaging Sciences, Indiana University, Indianapolis, Indiana
| | - Yong Zang
- Department of Biostatistics, Indiana University, Indianapolis, Indiana
| | | | - W Andy Tao
- Department of Biochemistry, Purdue University, West Lafayette, Indiana
| | | | - Roberto Pili
- Department of Cancer Pathology and Prevention, University at Buffalo, Buffalo, New York.
- Department of Pharmacology and Toxicology, Indiana University, Indianapolis, Indiana
- Department of Medicine, Indiana University, Indianapolis, Indiana
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25
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Damayanti NP, Buno K, Cui Y, Voytik-Harbin SL, Pili R, Freeman J, Irudayaraj JMK. Real-Time Multiplex Kinase Phosphorylation Sensors in Living Cells. ACS Sens 2017; 2:1225-1230. [PMID: 28838242 DOI: 10.1021/acssensors.7b00359] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Phosphorylation is an important post-translational modification implicated in cellular signaling and regulation. However, current methods to study protein phosphorylation by various kinases lack spatiotemporal resolution or the ability to simultaneously observe in real time the activity of multiple kinases in live cells. We present a peptide biosensor strategy with time correlated single photon counting-fluorescence lifetime imaging (TCSPC-FLIM) to interrogate the spatial and temporal dynamics of VEGFR-2 and AKT phosphorylation activity in real time in live 2D and 3D cell culture models at single cell resolution. By recording the increase in fluorescence lifetime due to a change in the solvatochromic environment of the sensor upon phosphorylation, we demonstrate that spatiotemporal maps of protein kinase activity can be obtained. Our results suggest that fluorescence lifetime imaging of peptide biosensors can be effectively and specifically used to monitor and quantify phosphorylation of multiple kinases in live cells.
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Affiliation(s)
- Nur P. Damayanti
- Indiana University School of Medicine, Indianapolis, Indiana 46202, United States
| | | | | | | | - Roberto Pili
- Indiana University School of Medicine, Indianapolis, Indiana 46202, United States
| | - Jennifer Freeman
- School of Health Sciences, West Lafayette, Indiana 47907, United States
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26
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Damayanti NP, Buno K, Narayanan N, Voytik Harbin SL, Deng M, Irudayaraj JMK. Monitoring focal adhesion kinase phosphorylation dynamics in live cells. Analyst 2017; 142:2713-2716. [PMID: 28589989 PMCID: PMC5531600 DOI: 10.1039/c7an00471k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Focal adhesion kinase (FAK) is a cytoplasmic non-receptor tyrosine kinase essential for a diverse set of cellular functions. Current methods for monitoring FAK activity in response to an extracellular stimulus lack spatiotemporal resolution and/or the ability to perform multiplex detection. Here we report on a novel approach to monitor the real-time kinase phosphorylation activity of FAK in live single cells by fluorescence lifetime imaging.
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Affiliation(s)
- Nur P Damayanti
- Bindley Bioscience Center, Purdue Center for Cancer Research, Purdue University, West Lafayette, Indiana 47907, USA. and Indiana University School of Medicine, 980 West Walnut St. R3 C312, Indianapolis, Indiana 46202, USA
| | - Kevin Buno
- Weldon School of Biomedical Engineering, Collage of Engineering, Purdue University, West Lafayette, Indiana 47907, USA
| | - Nagarajan Narayanan
- Bindley Bioscience Center, Purdue Center for Cancer Research, Purdue University, West Lafayette, Indiana 47907, USA.
| | - Sherry L Voytik Harbin
- Weldon School of Biomedical Engineering, Collage of Engineering, Purdue University, West Lafayette, Indiana 47907, USA
| | - Meng Deng
- Bindley Bioscience Center, Purdue Center for Cancer Research, Purdue University, West Lafayette, Indiana 47907, USA.
| | - Joseph M K Irudayaraj
- Bindley Bioscience Center, Purdue Center for Cancer Research, Purdue University, West Lafayette, Indiana 47907, USA.
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27
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Mahapatra CT, Damayanti NP, Guffey SC, Serafin JS, Irudayaraj J, Sepúlveda MS. Comparativein vitrotoxicity assessment of perfluorinated carboxylic acids. J Appl Toxicol 2016; 37:699-708. [PMID: 27917506 DOI: 10.1002/jat.3418] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 10/25/2016] [Accepted: 10/25/2016] [Indexed: 12/19/2022]
Affiliation(s)
- Cecon T. Mahapatra
- Purdue University; Department of Forestry and Natural Resources; West Lafayette IN 47907 USA
| | - Nur P. Damayanti
- Bindley Bioscience Center; Purdue University; West Lafayette IN USA
| | - Samuel C. Guffey
- Purdue University; Department of Forestry and Natural Resources; West Lafayette IN 47907 USA
| | - Jennifer S. Serafin
- Purdue University; Department of Forestry and Natural Resources; West Lafayette IN 47907 USA
| | | | - Maria S. Sepúlveda
- Purdue University; Department of Forestry and Natural Resources; West Lafayette IN 47907 USA
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28
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Mainz ER, Wang Q, Lawrence DS, Allbritton NL. An Integrated Chemical Cytometry Method: Shining a Light on Akt Activity in Single Cells. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201606914] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Emilie R. Mainz
- Department of Chemistry; University of North Carolina; Chapel Hill NC 27599 USA
| | - Qunzhao Wang
- Department of Chemistry; Division of Chemical Biology and Medicinal Chemistry and Department of Pharmacology; University of North Carolina; Chapel Hill NC 27599 USA
| | - David S. Lawrence
- Department of Chemistry; Division of Chemical Biology and Medicinal Chemistry and Department of Pharmacology; University of North Carolina; Chapel Hill NC 27599 USA
| | - Nancy L. Allbritton
- Department of Chemistry and Pharmacology; University of North Carolina; Chapel Hill NC 27599 USA
- Joint Department of Biomedical Engineering; University of North Carolina and North Carolina State University; Chapel Hill and Raleigh NC USA
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29
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Prével C, Pellerano M, González-Vera JA, Henri P, Meunier L, Vollaire J, Josserand V, Morris MC. Fluorescent peptide biosensor for monitoring CDK4/cyclin D kinase activity in melanoma cell extracts, mouse xenografts and skin biopsies. Biosens Bioelectron 2016; 85:371-380. [PMID: 27203461 DOI: 10.1016/j.bios.2016.04.050] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 04/15/2016] [Accepted: 04/18/2016] [Indexed: 11/28/2022]
Abstract
Melanoma constitutes the most aggressive form of skin cancer, which further metastasizes into a deadly form of cancer. The p16(INK4a)-Cyclin D-CDK4/6-pRb pathway is dysregulated in 90% of melanomas. CDK4/Cyclin D kinase hyperactivation, associated with mutation of CDK4, amplification of Cyclin D or loss of p16(INK4a) leads to increased risk of developing melanoma. This kinase therefore constitutes a key biomarker in melanoma and an emerging pharmacological target, however there are no tools enabling direct detection or quantification of its activity. Here we report on the design and application of a fluorescent peptide biosensor to quantify CDK4 activity in melanoma cell extracts, skin biopsies and melanoma xenografts. This biosensor provides sensitive means of comparing CDK4 activity between different melanoma cell lines and further responds to CDK4 downregulation by siRNA or small-molecule inhibitors. By affording means of monitoring CDK4 hyperactivity consequent to cancer-associated molecular alterations in upstream signaling pathways that converge upon this kinase, this biosensor offers an alternative to immunological identification of melanoma-specific biomarkers, thereby constituting an attractive tool for diagnostic purposes, providing complementary functional information to histological analysis, of particular utility for detection of melanoma onset in precancerous lesions. This is indeed the first fluorescent peptide biosensor which has been successfully implemented to monitor kinase activity in skin samples and melanoma tumour xenografts. Moreover by enabling to monitor response to CDK4 inhibitors, this biosensor constitutes an attractive companion assay to identify compounds of therapeutic relevance for melanoma.
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Affiliation(s)
- Camille Prével
- Institut des Biomolécules Max Mousseron, CNRS, UMR 5247, Université de Montpellier, Faculté de Pharmacie, 15, Av. Charles Flahault, 34093 Montpellier, France
| | - Morgan Pellerano
- Institut des Biomolécules Max Mousseron, CNRS, UMR 5247, Université de Montpellier, Faculté de Pharmacie, 15, Av. Charles Flahault, 34093 Montpellier, France
| | - Juan A González-Vera
- Institut des Biomolécules Max Mousseron, CNRS, UMR 5247, Université de Montpellier, Faculté de Pharmacie, 15, Av. Charles Flahault, 34093 Montpellier, France
| | - Pauline Henri
- Institut des Biomolécules Max Mousseron, CNRS, UMR 5247, Université de Montpellier, Faculté de Pharmacie, 15, Av. Charles Flahault, 34093 Montpellier, France
| | - Laurent Meunier
- Institut des Biomolécules Max Mousseron, CNRS, UMR 5247, Université de Montpellier, Faculté de Pharmacie, 15, Av. Charles Flahault, 34093 Montpellier, France
| | - Julien Vollaire
- INSERM U823, Institut Albert Bonniot, F-38000 Grenoble, France; Universite Grenoble Alpes, Institut Albert Bonniot, F-38000 Grenoble, France
| | - Véronique Josserand
- INSERM U823, Institut Albert Bonniot, F-38000 Grenoble, France; Universite Grenoble Alpes, Institut Albert Bonniot, F-38000 Grenoble, France
| | - May C Morris
- Institut des Biomolécules Max Mousseron, CNRS, UMR 5247, Université de Montpellier, Faculté de Pharmacie, 15, Av. Charles Flahault, 34093 Montpellier, France.
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30
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Sharma A, Umar S, Kar P, Singh K, Sachdev M, Goel A. A new type of biocompatible fluorescent probe AFN for fixed and live cell imaging of intracellular lipid droplets. Analyst 2016; 141:137-43. [DOI: 10.1039/c5an01623a] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We discovered a new type of nontoxic, highly fluorogenic and biocompatible probe AFN for selective staining of intracellular Lipid Droplets (LDs) in both fixed and live human cervical cancer cells (HeLa) and 3T3-L1 pre-adipocytes without any background artifacts.
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Affiliation(s)
- Ashutosh Sharma
- Fluorescent Lab
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Shahida Umar
- Fluorescent Lab
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Parmita Kar
- Division of Endocrinology
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Kavita Singh
- Electron Microscopy Unit
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Monika Sachdev
- Division of Endocrinology
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Atul Goel
- Fluorescent Lab
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
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31
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Wang X, Cui Y, Irudayaraj J. Single-Cell Quantification of Cytosine Modifications by Hyperspectral Dark-Field Imaging. ACS NANO 2015; 9:11924-32. [PMID: 26505210 PMCID: PMC4766098 DOI: 10.1021/acsnano.5b04451] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Epigenetic modifications on DNA, especially on cytosine, play a critical role in regulating gene expression and genome stability. It is known that the levels of different cytosine derivatives are highly dynamic and are regulated by a variety of factors that act on the chromatin. Here we report an optical methodology based on hyperspectral dark-field imaging (HSDFI) using plasmonic nanoprobes to quantify the recently identified cytosine modifications on DNA in single cells. Gold (Au) and silver (Ag) nanoparticles (NPs) functionalized with specific antibodies were used as contrast-generating agents due to their strong local surface plasmon resonance (LSPR) properties. With this powerful platform we have revealed the spatial distribution and quantity of 5-carboxylcytosine (5caC) at the different stages in cell cycle and demonstrated that 5caC was a stably inherited epigenetic mark. We have also shown that the regional density of 5caC on a single chromosome can be mapped due to the spectral sensitivity of the nanoprobes in relation to the interparticle distance. Notably, HSDFI enables an efficient removal of the scattering noises from nonspecifically aggregated nanoprobes, to improve accuracy in the quantification of different cytosine modifications in single cells. Further, by separating the LSPR fingerprints of AuNPs and AgNPs, multiplex detection of two cytosine modifications was also performed. Our results demonstrate HSDFI as a versatile platform for spatial and spectroscopic characterization of plasmonic nanoprobe-labeled nuclear targets at the single-cell level for quantitative epigenetic screening.
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32
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Ren W, Damayanti NP, Wang X, Irudayaraj JMK. Kinase phosphorylation monitoring with i-motif DNA cross-linked SERS probes. Chem Commun (Camb) 2015; 52:410-3. [PMID: 26525744 DOI: 10.1039/c5cc06566f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
We propose an ultrasensitive SERS-based peptide biosensor platform to monitor phosphorylation catalyzed by kinase in a dynamic format. The developed SERS strategy has a short response time with potential to monitor phosphorylation in live cells.
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Affiliation(s)
- Wen Ren
- Agricultural and Biological Engineering, Bindley Bioscience Center, Purdue Center for Cancer Research, Purdue University, West Lafayette, IN 47907, USA.
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33
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Zhang L, Lei J, Liu J, Ma F, Ju H. Persistent luminescence nanoprobe for biosensing and lifetime imaging of cell apoptosis via time-resolved fluorescence resonance energy transfer. Biomaterials 2015; 67:323-34. [PMID: 26232881 DOI: 10.1016/j.biomaterials.2015.07.037] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2015] [Revised: 07/17/2015] [Accepted: 07/20/2015] [Indexed: 10/23/2022]
Abstract
Time-resolved fluorescence technique can reduce the short-lived background luminescence and auto-fluorescence interference from cells and tissues by exerting the delay time between pulsed excitation light and signal acquisition. Here, we prepared persistent luminescence nanoparticles (PLNPs) to design a universal time-resolved fluorescence resonance energy transfer (TR-FRET) platform for biosensing, lifetime imaging of cell apoptosis and in situ lifetime quantification of intracellular caspase-3. Three kinds of PLNPs-based nanoprobes are assembled by covalently binding dye-labeled peptides or DNA to carboxyl-functionalized PLNPs for the efficient detection of caspase-3, microRNA and protein. The peptides-functionalized nanoprobe is also employed for fluorescence lifetime imaging to monitor cell apoptosis, which shows a dependence of cellular fluorescence lifetime on caspase-3 activity and thus leads to an in situ quantification method. This work provides a proof-of-concept for PLNPs-based TR-FRET analysis and demonstrates its potential in exploring dynamical information of life process.
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Affiliation(s)
- Lei Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China
| | - Jianping Lei
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China.
| | - Jintong Liu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China
| | - Fengjiao Ma
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China.
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34
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Liu Q, Wang J, Boyd BJ. Peptide-based biosensors. Talanta 2015; 136:114-27. [PMID: 25702993 DOI: 10.1016/j.talanta.2014.12.020] [Citation(s) in RCA: 133] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 11/26/2014] [Accepted: 12/18/2014] [Indexed: 12/24/2022]
Abstract
Peptides have been used as components in biological analysis and fabrication of novel biosensors for a number of reasons, including mature synthesis protocols, diverse structures and as highly selective substrates for enzymes. Bio-conjugation strategies can provide an efficient way to convert interaction information between peptides and analytes into a measurable signal, which can be used for fabrication of novel peptide-based biosensors. Many sensitive fluorophores can respond rapidly to environmental changes and stimuli manifest as a change in spectral characteristics, hence environmentally-sensitive fluorophores have been widely used as signal markers to conjugate to peptides to construct peptide-based molecular sensors. Additionally, nanoparticles, fluorescent polymers, graphene and near infrared dyes are also used as peptide-conjugated signal markers. On the other hand, peptides may play a generalist role in peptide-based biosensors. Peptides have been utilized as bio-recognition elements to bind various analytes including proteins, nucleic acid, bacteria, metal ions, enzymes and antibodies in biosensors. The selectivity of peptides as an enzymatic substrate has thus been utilized to construct enzyme sensors or enzyme-activity sensors. In addition, progress on immobilization and microarray techniques of peptides has facilitated the progress and commercial application of chip-based peptide biosensors in clinical diagnosis.
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Affiliation(s)
- Qingtao Liu
- Drug Delivery Disposition and Dynamics-Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville 3052, VIC, Australia; ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville 3052, VIC, Australia
| | - Jinfeng Wang
- Australian Future Fibres Research and Innovation Centre, Institute for Frontier Materials, Deakin University, Geelong 3217, VIC, Australia
| | - Ben J Boyd
- Drug Delivery Disposition and Dynamics-Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville 3052, VIC, Australia; ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville 3052, VIC, Australia.
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35
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Cui Y, Irudayaraj J. Inside single cells: quantitative analysis with advanced optics and nanomaterials. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2014; 7:387-407. [PMID: 25430077 DOI: 10.1002/wnan.1321] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 10/17/2014] [Accepted: 10/29/2014] [Indexed: 01/08/2023]
Abstract
Single-cell explorations offer a unique window to inspect molecules and events relevant to mechanisms and heterogeneity constituting the central dogma of biology. A large number of nucleic acids, proteins, metabolites, and small molecules are involved in determining and fine-tuning the state and function of a single cell at a given time point. Advanced optical platforms and nanotools provide tremendous opportunities to probe intracellular components with single-molecule accuracy, as well as promising tools to adjust single-cell activity. To obtain quantitative information (e.g., molecular quantity, kinetics, and stoichiometry) within an intact cell, achieving the observation with comparable spatiotemporal resolution is a challenge. For single-cell studies, both the method of detection and the biocompatibility are critical factors as they determine the feasibility, especially when considering live-cell analysis. Although a considerable proportion of single-cell methodologies depend on specialized expertise and expensive instruments, it is our expectation that the information content and implication will outweigh the costs given the impact on life science enabled by single-cell analysis.
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Affiliation(s)
- Yi Cui
- Department of Agricultural and Biological Engineering, Bindley Bioscience Center and Birck Nanotechnology Center, Purdue University, West Lafayette, IN, USA
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36
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Damayanti NP, Craig AP, Irudayaraj J. A hybrid FLIM-elastic net platform for label free profiling of breast cancer. Analyst 2014; 138:7127-34. [PMID: 24106733 DOI: 10.1039/c3an01097j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a label-free fluorescence lifetime profiling strategy to classify breast cancer cells, MCF10CA1h (malignant), MCF10A (nonmalignant), and MCF10AneoT (premalignant) in different stages of malignancy. Fluorescence Lifetime Imaging Microscopy (FLIM) was used to record the lifetime of autofluorescence of endogenous flavin in MCF10 cells in different stages of malignancy. Predominant differences in lifetimes ascertained by multi-exponential fitting curves can be attributed to the different forms of flavin protein; flavin mononucleotide (FMN), free flavin adenine dinucleotide (FAD), semiquinone, and bound FAD. A lifetime map of the metabolite was derived from the contribution of the lifetime of each metabolite by iterative reconvolution fitting of the Time Correlated Single Photon Counting (TCSPC) decay curves. Lifetime maps were constructed by mapping the average lifetime values pixel by pixel using MATLAB. The FLIM image (150 × 150 pixels) of each cell was extracted, resized and centered into 100 × 100 pixels using the nearest neighbor algorithm. Principal Component Analysis (PCA) in conjunction with Elastic net Analysis (EnA) was then used to classify the different stages of MCF10 cell lines based on average lifetime values. The EnA model provided an excellent classification of the cells at different stages of tumorigenesis yielding 100% accuracy.
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Affiliation(s)
- Nur P Damayanti
- Department of Agricultural and Biological Engineering and Bindley Bioscience Center, 225 S. University Street, West Lafayette, IN, USA
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37
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Cárdenas-Maestre JM, Pérez-López AM, Bradley M, Sánchez-Martín RM. Microsphere-based intracellular sensing of caspase-3/7 in apoptotic living cells. Macromol Biosci 2014; 14:923-8. [PMID: 24664851 DOI: 10.1002/mabi.201300525] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Revised: 01/30/2014] [Indexed: 11/10/2022]
Abstract
A novel multifunctional probe to monitor intracellular enzymatic activity in living cells is successfully developed. Their use as accurate intracellular sensors by conjugation of an internal control (that gives an extra feature to both evaluate cellular-uptake efficiency and track probes over time) is reported. In particular, a specific application of these multifunctional microspheres as sensors of caspase-3/7 to monitor apoptosis by flow cytometry is described. The preparation of these devices together with a kinetic study towards caspase-3 and caspase-7 and their evaluation as flow cytometry probe in apoptotic living cells are reported.
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38
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Goel A, Sharma A, Kathuria M, Bhattacharjee A, Verma A, Mishra PR, Nazir A, Mitra K. New Fluoranthene FLUN-550 as a Fluorescent Probe for Selective Staining and Quantification of Intracellular Lipid Droplets. Org Lett 2014; 16:756-9. [DOI: 10.1021/ol403470d] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Atul Goel
- Academy of Scientific and Innovative Research, New Delhi 110001, India
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39
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Scheidt HA, Meyer T, Nikolaus J, Baek DJ, Haralampiev I, Thomas L, Bittman R, Müller P, Herrmann A, Huster D. Cholesterol's aliphatic side chain modulates membrane properties. Angew Chem Int Ed Engl 2013; 52:12848-51. [PMID: 24382636 PMCID: PMC4011182 DOI: 10.1002/anie.201306753] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Indexed: 11/06/2022]
Abstract
The influence of cholesterol's alkyl side chain on membrane properties was studied using a series of synthetic cholesterol derivatives without a side chain or with a branched side chain consisting of 5 to 14 carbon atoms. Cholesterol's side chain is crucial for all membrane properties investigated and therefore essential for the membrane properties of eukaryotic cells.
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Affiliation(s)
- Holger A. Scheidt
- Institute of Medical Physics and Biophysics, University of Leipzig,
Härtelstr. 16-18, D-04107 Leipzig, Germany
| | - Thomas Meyer
- Institute of Medical Physics and Biophysics, University of Leipzig,
Härtelstr. 16-18, D-04107 Leipzig, Germany
| | - Jörg Nikolaus
- Institute of Biology/Biophysics, Humboldt University Berlin,
Invalidenstr. 42, D-10115 Berlin, Germany
| | - Dong Jae Baek
- Department of Chemistry and Biochemistry, Queens College of CUNY,
Flushing, NY 11367-1597, USA
| | - Ivan Haralampiev
- Institute of Biology/Biophysics, Humboldt University Berlin,
Invalidenstr. 42, D-10115 Berlin, Germany
| | - Lars Thomas
- Institute of Medical Physics and Biophysics, University of Leipzig,
Härtelstr. 16-18, D-04107 Leipzig, Germany
| | - Robert Bittman
- Department of Chemistry and Biochemistry, Queens College of CUNY,
Flushing, NY 11367-1597, USA
| | - Peter Müller
- Institute of Biology/Biophysics, Humboldt University Berlin,
Invalidenstr. 42, D-10115 Berlin, Germany
| | - Andreas Herrmann
- Institute of Biology/Biophysics, Humboldt University Berlin,
Invalidenstr. 42, D-10115 Berlin, Germany
| | - Daniel Huster
- Institute of Medical Physics and Biophysics, University of
Leipzig, Härtelstr. 16-18, D-04107 Leipzig, Germany
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40
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Scheidt HA, Meyer T, Nikolaus J, Baek DJ, Haralampiev I, Thomas L, Bittman R, Müller P, Herrmann A, Huster D. Die aliphatische Seitenkette von Cholesterol bestimmt essenzielle Membraneigenschaften. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201306753] [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]
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