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Shen PT, Huang SH, Huang Z, Wilson JJ, Shvets G. Probing the Drug Dynamics of Chemotherapeutics Using Metasurface-Enhanced Infrared Reflection Spectroscopy of Live Cells. Cells 2022; 11:1600. [PMID: 35626636 PMCID: PMC9139550 DOI: 10.3390/cells11101600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/05/2022] [Accepted: 05/07/2022] [Indexed: 11/25/2022] Open
Abstract
Infrared spectroscopy has drawn considerable interest in biological applications, but the measurement of live cells is impeded by the attenuation of infrared light in water. Metasurface-enhanced infrared reflection spectroscopy (MEIRS) had been shown to mitigate the problem, enhance the cellular infrared signal through surface-enhanced infrared absorption, and encode the cellular vibrational signatures in the reflectance spectrum at the same time. In this study, we used MEIRS to study the dynamic response of live cancer cells to a newly developed chemotherapeutic metal complex with distinct modes of action (MoAs): tricarbonyl rhenium isonitrile polypyridyl (TRIP). MEIRS measurements demonstrated that administering TRIP resulted in long-term (several hours) reduction in protein, lipid, and overall refractive index signals, and in short-term (tens of minutes) increase in these signals, consistent with the induction of endoplasmic reticulum stress. The unique tricarbonyl IR signature of TRIP in the bioorthogonal spectral window was monitored in real time, and was used as an infrared tag to detect the precise drug delivery time that was shown to be closely correlated with the onset of the phenotypic response. These results demonstrate that MEIRS is an effective label-free real-time cellular assay capable of detecting and interpreting the early phenotypic responses of cells to IR-tagged chemotherapeutics.
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Affiliation(s)
- Po-Ting Shen
- School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, USA; (P.-T.S.); (S.H.H.)
| | - Steven H. Huang
- School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, USA; (P.-T.S.); (S.H.H.)
| | - Zhouyang Huang
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, USA; (Z.H.); (J.J.W.)
| | - Justin J. Wilson
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, USA; (Z.H.); (J.J.W.)
| | - Gennady Shvets
- School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, USA; (P.-T.S.); (S.H.H.)
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Li Z, Hu B, Li G, Fox SE, Jalal SI, Turek J, Brown JQ, Nolte DD. Tissue dynamics spectroscopic imaging: functional imaging of heterogeneous cancer tissue. JOURNAL OF BIOMEDICAL OPTICS 2020; 25:JBO-200157R. [PMID: 32964703 PMCID: PMC7506185 DOI: 10.1117/1.jbo.25.9.096006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 09/01/2020] [Indexed: 06/11/2023]
Abstract
SIGNIFICANCE Tumor heterogeneity poses a challenge for the chemotherapeutic treatment of cancer. Tissue dynamics spectroscopy captures dynamic contrast and can capture the response of living tissue to applied therapeutics, but the current analysis averages over the complicated spatial response of living biopsy samples. AIM To develop tissue dynamics spectroscopic imaging (TDSI) to map the heterogeneous spatial response of tumor tissue to anticancer drugs. APPROACH TDSI is applied to tumor spheroids grown from cell lines and to ex vivo living esophageal biopsy samples. Doppler fluctuation spectroscopy is performed on a voxel basis to extract spatial maps of biodynamic biomarkers. Functional images and bivariate spatial maps are produced using a bivariate color merge to represent the spatial distribution of pairs of signed drug-response biodynamic biomarkers. RESULTS We have mapped the spatial variability of drug responses within biopsies and have tracked sample-to-sample variability. Sample heterogeneity observed in the biodynamic maps is associated with histological heterogeneity observed using inverted selective-plane illumination microscopy. CONCLUSION We have demonstrated the utility of TDSI as a functional imaging method to measure tumor heterogeneity and its potential for use in drug-response profiling.
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Affiliation(s)
- Zhe Li
- Purdue University, Department of Physics and Astronomy, West Lafayette, Indiana, United States
| | - Bihe Hu
- Tulane University, Department of Biomedical Engineering, New Orleans, Louisiana, United States
| | - Guang Li
- Tulane University, Department of Biomedical Engineering, New Orleans, Louisiana, United States
| | - Sharon E. Fox
- LSU Health Sciences Center, Department of Pathology, New Orleans, Louisiana, United States
| | - Shadia I. Jalal
- Indiana University School of Medicine, Department of Medicine, Indianapolis, Indiana, United States
| | - John Turek
- Purdue University, Department of Basic Medical Sciences, West Lafayette, Indiana, United States
| | - J. Quincy Brown
- Tulane University, Department of Biomedical Engineering, New Orleans, Louisiana, United States
| | - David D. Nolte
- Purdue University, Department of Physics and Astronomy, West Lafayette, Indiana, United States
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Systematic characterization of AT1 receptor antagonists with label-free dynamic mass redistribution assays. J Pharmacol Toxicol Methods 2020; 102:106682. [PMID: 32087363 DOI: 10.1016/j.vascn.2020.106682] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 12/23/2019] [Accepted: 02/07/2020] [Indexed: 11/23/2022]
Abstract
INTRODUCTION In the drug discovery field, the binding affinities and binding kinetics of drug candidates are very important. Angiotensin II type 1 (AT1) receptor antagonists, e.g., candesartan, telmisartan, irbesartan, losartan and valsartan, show high affinities and long-lasting bindings to the receptor, making them preferred medications for hypertension treatment. However, the molecular binding properties of AT1 receptor antagonists are controversial. METHODS In this work, we established a profile to study the phenotypic properties of AT1 receptor antagonists with label-free dynamic mass redistribution (DMR) assays in native human cells. With noninvasive features, DMR assay were conducted in multiple formats. Eleven antagonists were systematically evaluated with angiotensin II as an agonist probe in the Hep G2 cell line, which endogenously expresses the AT1 receptor. RESULTS The IC50 values to the AT1 receptor of individual antagonist varied with different incubation times. The antagonists showed competitive behavior with angiotensin II. Schild analysis was used to analyze the competitive behavior of the antagonist. All of the antagonist showed long-lasting possession of the AT1 receptor, except telmisartan. The systematic evaluation of the antagonists implied that 11 antagonists showed high binding affinity but distinct binding modes to AT1 receptor. DISCUSSION This study demonstrated that the DMR assay has great potential for determining the pharmacological parameters of ligands. This work may serve as guidance for other receptor and ligand assays.
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Saikosaponin D from Radix Bupleuri suppresses triple-negative breast cancer cell growth by targeting β-catenin signaling. Biomed Pharmacother 2018; 108:724-733. [DOI: 10.1016/j.biopha.2018.09.038] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 09/06/2018] [Accepted: 09/07/2018] [Indexed: 11/18/2022] Open
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Epidermal growth factor receptor targeting alters gene expression and restores the adhesion function of cancerous cells as measured by single cell force spectroscopy. Mol Cell Biochem 2016; 423:129-139. [DOI: 10.1007/s11010-016-2831-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Accepted: 09/23/2016] [Indexed: 01/07/2023]
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Deng S, Yu X, Liu R, Chen W, Wang P. A two-compartment microfluidic device for long-term live cell detection based on surface plasmon resonance. BIOMICROFLUIDICS 2016; 10:044109. [PMID: 27570574 PMCID: PMC4975751 DOI: 10.1063/1.4960487] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Accepted: 07/25/2016] [Indexed: 06/06/2023]
Abstract
A two-compartment microfluidic device integrated with a surface plasmon resonance (SPR) interferometric imaging system has been developed for long-term and real-time cell detection. The device uses a porous membrane sandwiched between two chambers to obtain an exact medium exchange rate and minimal fluid shear stress for cell culture. The two-compartment device was optimized by COMSOL simulations and fabricated using Poly (dimethylsiloxane) elastomer replica molding methods. To confirm the capability of the microfluidic device to maintain the cell physiological environment over long intervals, HeLa cells were cultured in the device for up to 48 h. The cell proliferation process was monitored by both SPR and microscopic time-lapse imaging. The SPR response showed four phases with different growth rates, and agreed well with the time-lapse imaging. Furthermore, real-time detection of cell behaviors under different doses of Paclitaxel and Cisplatin was performed. The SPR responses revealed dose-dependent inhibitions of cell proliferation, with distinct drug action kinetics.
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Affiliation(s)
- Shijie Deng
- State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University , Beijing 100084, People's Republic of China
| | - Xinglong Yu
- State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University , Beijing 100084, People's Republic of China
| | - Ran Liu
- Department of Biomedical Engineering, School of Medicine, Tsinghua University , Beijing 100084, People's Republic of China
| | - Weixing Chen
- Department of Biomedical Engineering, School of Medicine, Tsinghua University , Beijing 100084, People's Republic of China
| | - Peng Wang
- State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University , Beijing 100084, People's Republic of China
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Label-free cell phenotypic profiling and pathway deconvolution of neurotensin receptor-1. Pharmacol Res 2016; 108:39-45. [DOI: 10.1016/j.phrs.2016.04.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 04/19/2016] [Accepted: 04/19/2016] [Indexed: 11/18/2022]
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Fang Y. Combining label-free cell phenotypic profiling with computational approaches for novel drug discovery. Expert Opin Drug Discov 2015; 10:331-43. [DOI: 10.1517/17460441.2015.1020788] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Ye Fang
- Corning Inc., Biochemical Technologies, Science and Technology Division, Corning, NY 14831, USA
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Yang CT, Méjard R, Griesser HJ, Bagnaninchi PO, Thierry B. Cellular micromotion monitored by long-range surface plasmon resonance with optical fluctuation analysis. Anal Chem 2015; 87:1456-61. [PMID: 25495915 DOI: 10.1021/ac5031978] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Long-range surface plasmon resonance (LRSPR) is a powerful biosensing technology due to a substantially larger probing depth into the medium and sensitivity, compared with conventional SPR. We demonstrate here that LRSPR can provide sensitive noninvasive measurement of the dynamic fluctuation of adherent cells, often referred to as the cellular micromotion. Proof of concept was achieved using confluent layers of 3T3 fibroblast cells and MDA-MB-231 cancer cells. The slope of the power spectral density (PSD) of the optical fluctuations was calculated to determine the micromotion index, and significant differences were measured between live and fixed cell layers. Furthermore, the performances of LRSPR and conventional surface plasmon resonance (cSPR) were compared with respect to micromotion monitoring. Our study showed that the micromotion index of cells measured by LRSPR sensors was higher than when measured with cSPR, suggesting a higher sensitivity of LRSPR to the micromotion of cells. To investigate further this finding, simulations were conducted to establish the relative sensitivities of LRSPR and cSPR to membrane fluctuations. Increased signal intensity was predicted for LRSPR in comparison to cSPR, suggesting that membrane fluctuations play a significant role in the optical micromotion measured in LRSPR. Analogous to cellular micromotion measured using impedance techniques, LRSPR micromotion has the potential to provide important biological information on the metabolic activity and viability of adherent cells.
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Affiliation(s)
- Chih-Tsung Yang
- Ian Wark Research Institute, University of South Australia , Mawson Lakes Campus, Mawson Lakes, South Australia 5095, Australia
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Abstract
G protein-coupled receptors (GPCRs) represent the largest class of drug targets. Ligand-directed functional selectivity or biased agonism opens new possibility for discovering GPCR drugs with better efficacy and safety profiles. However, quantification of ligand bias is challenging. Herein, we present five different label-free dynamic mass redistribution (DMR) approaches to assess ligand bias acting at the β2-adrenergic receptor (β2AR). Multiparametric analysis of the DMR agonist profiles reveals divergent pharmacology of a panel of β2AR agonists. DMR profiling using catechol as a conformational probe detects the presence of multiple conformations of the β2AR. DMR assays under microfluidics, together with chemical biology tools, discover ligand-directed desensitization of the receptor. DMR antagonist reverse assays manifest biased antagonism. DMR profiling using distinct probe-modulated cells detects the biased agonism in the context of self-referenced pharmacological activity map.
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Ferrie AM, Wang C, Deng H, Fang Y. A label-free optical biosensor with microfluidics identifies an intracellular signalling wave mediated through the β(2)-adrenergic receptor. Integr Biol (Camb) 2014; 5:1253-61. [PMID: 23989552 DOI: 10.1039/c3ib40112j] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The canonical model of G protein-coupled receptor (GPCR) signalling states that it is solely initiated at the cell surface. In recent years, a handful of evidence has started emerging from high-resolution molecular assays that the internalized receptors can mediate the third wave of signalling, besides G protein- and β-arrestin-mediated signalling both initiating at the cell surface. However, little is known about the functional consequences of distinct waves of GPCR signalling, in particular, at the whole cell system level. We here report the development of label-free biosensor antagonist reverse assays and their use to differentiate the signalling waves of an endogenous β2-adrenergic receptor (β2-AR) in A431 cells. Results showed that the persistent agonist treatment activated the β2-ARs, leading to a long-term sustained dynamic mass redistribution (DMR) signal, a whole cell phenotypic response. Under the persistent treatment scheme in microplates, a panel of known β-blockers all dose-dependently and completely reversed the DMR signal of epinephrine at a relatively low dose (10 nM), except for sotalol which partially reversed the DMR. Under the perfusion conditions with microfluidics, the subsequent perfusion with sotalol only reversed the DMR induced by epinephrine or isoproterenol at 10 nM, but not at 10 μM. Furthermore, the degree of the DMR reversion by sotalol was found to be in an opposite relation with the duration of the initial agonist treatment. Together, these results suggest that the hydrophilic antagonist sotalol is constrained outside the cells throughout the assays, and the early signalling wave initiated at the cell surface dominates the DMR induced by epinephrine or isoproterenol at relatively low doses, while a secondary and late signalling wave is initiated once the receptors are internalized and contributes partially to the long-term sustainability of the DMR of epinephrine or isoproterenol at high doses.
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Affiliation(s)
- Ann M Ferrie
- Biochemical Technologies, Science and Technology Division, Corning Incorporated, Corning, NY 14831, USA.
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Abstract
Current drug discovery is dominated by label-dependent molecular approaches, which screen drugs in the context of a predefined and target-based hypothesis in vitro. Given that target-based discovery has not transformed the industry, phenotypic screen that identifies drugs based on a specific phenotype of cells, tissues, or animals has gained renewed interest. However, owing to the intrinsic complexity in drug-target interactions, there is often a significant gap between the phenotype screened and the ultimate molecular mechanism of action sought. This paper presents a label-free strategy for early drug discovery. This strategy combines label-free cell phenotypic profiling with computational approaches, and holds promise to bridge the gap by offering a kinetic and holistic representation of the functional consequences of drugs in disease relevant cells that is amenable to mechanistic deconvolution.
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Affiliation(s)
- Ye Fang
- Biochemical Technologies, Science and Technology Division, Corning Incorporated Corning, NY, USA
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