1
|
Kapic A, Sabnis N, Dossou AS, Chavez J, Ceresa L, Gryczynski Z, Fudala R, Dickerman R, Bunnell BA, Lacko AG. Photophysical Characterization and In Vitro Evaluation of α-Mangostin-Loaded HDL Mimetic Nano-Complex in LN-229 Glioblastoma Spheroid Model. Int J Mol Sci 2024; 25:7378. [PMID: 39000485 PMCID: PMC11242846 DOI: 10.3390/ijms25137378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Revised: 06/26/2024] [Accepted: 06/28/2024] [Indexed: 07/16/2024] Open
Abstract
Cytotoxic activity has been reported for the xanthone α-mangostin (AMN) against Glioblastoma multiforme (GBM), an aggressive malignant brain cancer with a poor prognosis. Recognizing that AMN's high degree of hydrophobicity is likely to limit its systemic administration, we formulated AMN using reconstituted high-density lipoprotein (rHDL) nanoparticles. The photophysical characteristics of the formulation, including fluorescence lifetime and steady-state anisotropy, indicated that AMN was successfully incorporated into the rHDL nanoparticles. To our knowledge, this is the first report on the fluorescent characteristics of AMN with an HDL-based drug carrier. Cytotoxicity studies in a 2D culture and 3D spheroid model of LN-229 GBM cells and normal human astrocytes showed an enhanced therapeutic index with the rHDL-AMN formulation compared to the unincorporated AMN and Temozolomide, a standard GBM chemotherapy agent. Furthermore, treatment with the rHDL-AMN facilitated a dose-dependent upregulation of autophagy and reactive oxygen species generation to a greater extent in LN-229 cells compared to astrocytes, indicating the reduced off-target toxicity of this novel formulation. These studies indicate the potential therapeutic benefits to GBM patients via selective targeting using the rHDL-AMN formulation.
Collapse
Affiliation(s)
- Ammar Kapic
- Lipoprotein Drug Delivery Research Laboratory, Department of Microbiology, Immunology & Genetics, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Nirupama Sabnis
- Lipoprotein Drug Delivery Research Laboratory, Department of Microbiology, Immunology & Genetics, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Akpedje S Dossou
- Lipoprotein Drug Delivery Research Laboratory, Department of Microbiology, Immunology & Genetics, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Jose Chavez
- College of Science and Engineering, Texas Christian University, Fort Worth, TX 76109, USA
| | - Luca Ceresa
- College of Science and Engineering, Texas Christian University, Fort Worth, TX 76109, USA
| | - Zygmunt Gryczynski
- College of Science and Engineering, Texas Christian University, Fort Worth, TX 76109, USA
| | - Rafal Fudala
- Lipoprotein Drug Delivery Research Laboratory, Department of Microbiology, Immunology & Genetics, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Rob Dickerman
- Department of Spine Surgery, Neurological and Spine Surgeon, 5575 Frisco Square Blvd, Frisco, TX 75093, USA
| | - Bruce A Bunnell
- Lipoprotein Drug Delivery Research Laboratory, Department of Microbiology, Immunology & Genetics, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Andras G Lacko
- Lipoprotein Drug Delivery Research Laboratory, Department of Microbiology, Immunology & Genetics, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| |
Collapse
|
2
|
Alfonso C, Sobrinos-Sanguino M, Luque-Ortega JR, Zorrilla S, Monterroso B, Nuero OM, Rivas G. Studying Macromolecular Interactions of Cellular Machines by the Combined Use of Analytical Ultracentrifugation, Light Scattering, and Fluorescence Spectroscopy Methods. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 3234:89-107. [PMID: 38507202 DOI: 10.1007/978-3-031-52193-5_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
Cellular machines formed by the interaction and assembly of macromolecules are essential in many processes of the living cell. These assemblies involve homo- and hetero-associations, including protein-protein, protein-DNA, protein-RNA, and protein-polysaccharide associations, most of which are reversible. This chapter describes the use of analytical ultracentrifugation, light scattering, and fluorescence-based methods, well-established biophysical techniques, to characterize interactions leading to the formation of macromolecular complexes and their modulation in response to specific or unspecific factors. We also illustrate, with several examples taken from studies on bacterial processes, the advantages of the combined use of subsets of these techniques as orthogonal analytical methods to analyze protein oligomerization and polymerization, interactions with ligands, hetero-associations involving membrane proteins, and protein-nucleic acid complexes.
Collapse
Affiliation(s)
- Carlos Alfonso
- Structural and Chemical Biology Department, Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas, Madrid, Spain.
| | - Marta Sobrinos-Sanguino
- Molecular Interactions Facility, Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - Juan Román Luque-Ortega
- Molecular Interactions Facility, Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - Silvia Zorrilla
- Structural and Chemical Biology Department, Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - Begoña Monterroso
- Structural and Chemical Biology Department, Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - Oscar M Nuero
- Molecular Interactions Facility, Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - Germán Rivas
- Structural and Chemical Biology Department, Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| |
Collapse
|
3
|
Ye H, Xu X, Wang J, Wang J, He Y, Mu Y, Shi G. Polarization effects on the fluorescence emission of zebrafish neurons using light-sheet microscopy. BIOMEDICAL OPTICS EXPRESS 2022; 13:6733-6744. [PMID: 36589590 PMCID: PMC9774877 DOI: 10.1364/boe.474588] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 11/21/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Light-sheet fluorescence microscopy (LSFM) makes use of a thin plane of light to optically section and image transparent tissues or organisms in vivo, which has the advantages of fast imaging speed and low phototoxicity. In this paper, we have employed light-sheet microscopy to investigate the polarization effects on fluorescence emission of zebrafish neurons via modifying the electric oscillation orientation of the excitation light. The intensity of the fluorescence emission from the excited zebrafish larvae follows a cosine square function with respect to the polarization state of the excitation light and reveals a 40% higher fluorescence emission when the polarization orientation is orthogonal to the illumination and detection axes. Through registration and subtraction of fluorescence images under different polarization states, we have demonstrated that most of the enhanced fluorescence signals are from the neuronal cells rather than the extracellular substance. This provides us a way to distinguish the cell boundaries and observe the organism structures with improved contrast and resolution.
Collapse
Affiliation(s)
- Hong Ye
- Jiangsu Key Laboratory of Medical Optics,
Suzhou Institute of Biomedical Engineering and Technology,
Chinese Academy of Sciences, Suzhou,
China
| | - Xin Xu
- Jiangsu Key Laboratory of Medical Optics,
Suzhou Institute of Biomedical Engineering and Technology,
Chinese Academy of Sciences, Suzhou,
China
- School of Biomedical Engineering (Suzhou),
Division of Life Sciences and Medicine, University of
Science and Technology of China, Hefei, China
| | - Jixiang Wang
- Jiangsu Key Laboratory of Medical Optics,
Suzhou Institute of Biomedical Engineering and Technology,
Chinese Academy of Sciences, Suzhou,
China
- School of Biomedical Engineering (Suzhou),
Division of Life Sciences and Medicine, University of
Science and Technology of China, Hefei, China
| | - Jing Wang
- Jiangsu Key Laboratory of Medical Optics,
Suzhou Institute of Biomedical Engineering and Technology,
Chinese Academy of Sciences, Suzhou,
China
- School of Biomedical Engineering (Suzhou),
Division of Life Sciences and Medicine, University of
Science and Technology of China, Hefei, China
| | - Yi He
- Jiangsu Key Laboratory of Medical Optics,
Suzhou Institute of Biomedical Engineering and Technology,
Chinese Academy of Sciences, Suzhou,
China
| | - Yu Mu
- Institute of Neuroscience, State Key
Laboratory of Neuroscience, Center for Excellence in Brain Science and
Intelligence Technology, Chinese Academy of
Sciences, Shanghai, China
| | - Guohua Shi
- Jiangsu Key Laboratory of Medical Optics,
Suzhou Institute of Biomedical Engineering and Technology,
Chinese Academy of Sciences, Suzhou,
China
- School of Biomedical Engineering (Suzhou),
Division of Life Sciences and Medicine, University of
Science and Technology of China, Hefei, China
| |
Collapse
|
4
|
Qiu D, Hu J, Wang P, Huang D, Lin Y, Tian H, Yi X, Zou Q, Zhu H. Synthesis of NaYF4:20% Yb3+,2% Er3+,2% Ce3+@NaYF4 nanorods and their size dependent uptake efficiency under flow condition. J RARE EARTH 2022. [DOI: 10.1016/j.jre.2021.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
5
|
Subedi S, Rella AK, Trung LG, Kumar V, Kang SW. Electrically Switchable Anisometric Carbon Quantum Dots Exhibiting Linearly Polarized Photoluminescence: Syntheses, Anisotropic Properties, and Facile Control of Uniaxial Orientation. ACS NANO 2022; 16:6480-6492. [PMID: 35343230 DOI: 10.1021/acsnano.2c00758] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Carbon quantum dots (CQDs) have been extensively explored in diverse fields because of their exceptional features. The nanometric particles with photoluminescence (PL) benefit various optical and photonic applications. However, the majority of previous reports have mainly focused on either unpolarized or circular-polarized (CP) PL. Linearly polarized (LP) emission of CQDs is limited mainly because of their isometric shape and difficulties in macroscopic orientation control. Herein, we report syntheses of anisometric CQDs and facile control of the uniaxial orientation on a macroscopic scale, which results in linearly polarized photoluminescence (LP-PL). The anisometric CQDs are synthesized from rigid-rod-shaped precursors and evenly dispersed in the rod-like liquid crystal (LC) host. As-synthesized CQDs exhibit a PL quantum yield as high as 35% in chloroform. In addition to uniform alignment, facile directional switching of the elongated CQD is established by employing the electrical responsiveness of the CQD and host LC. Therefore, the dichroic photophysical properties of anisometric CQDs have been beneficially adopted for fabrications of polarization-sensitive and electrically switchable PL devices. Also, anisometric CQDs are embedded in polymer films with molecular orientational patterns and clearly recognized by LP-PL.
Collapse
Affiliation(s)
- Subhangi Subedi
- Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju, 54896, Republic of Korea
- Department of Chemistry, Tri-Chandra Multiple Campus, Tribhuvan University, Kathmandu, 44613, Nepal
| | - Avinash K Rella
- Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju, 54896, Republic of Korea
| | - Le Gia Trung
- Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju, 54896, Republic of Korea
| | - Vineet Kumar
- Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju, 54896, Republic of Korea
| | - Shin-Woong Kang
- Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju, 54896, Republic of Korea
| |
Collapse
|
6
|
Lee CY, Degani I, Cheong J, Weissleder R, Lee JH, Cheon J, Lee H. Development of Integrated Systems for On-Site Infection Detection. Acc Chem Res 2021; 54:3991-4000. [PMID: 34677927 DOI: 10.1021/acs.accounts.1c00498] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The modern healthcare system faces an unrelenting threat from microorganisms, as evidenced by global outbreaks of new viral diseases, emerging antimicrobial resistance, and the rising incidence of healthcare-associated infections (HAIs). An effective response to these threats requires rapid and accurate diagnostic tests that can identify causative pathogens at the point of care (POC). Such tests could eliminate diagnostic uncertainties, facilitating patient triaging, minimizing the empiric use of antimicrobial drugs, and enabling targeted treatments. Current standard methods, however, often fail to meet the needs of rapid diagnosis in POC settings. Culture-based assays entail long processing times and require specialized laboratory infrastructure; nucleic acid (NA) tests are often limited to centralized hospitals due to assay complexity and high costs. Here we discuss two new POC tests developed in our groups to enable the rapid diagnosis of infection. The first is nanoPCR that takes advantages of core-shell magnetoplasmonic nanoparticles (MPNs): (i) Au shell significantly accelerates thermocycling via volumetric, plasmonic light-to-heat conversion and (ii) a magnetic core enables sensitive in situ fluorescent detection via magnetic clearing. By adopting a Ferris wheel module, the system expedites multisamples in parallel with a minimal setup. When applied to COVID-19 diagnosis, nanoPCR detected SARS-CoV-2 RNA down to 3.2 copy/μL within 17 min. In particular, nanoPCR diagnostics accurately identified COVID-19 cases in clinical samples (n = 150), validating its clinical applicability. The second is a polarization anisotropy diagnostic (PAD) system that exploits the principle of fluorescence polarization (FP) as a detection modality. Fluorescent probes were designed to alter their molecular weight upon recognizing target NAs. This event modulates the probes' tumbling rate (Brownian motion), which leads to changes in FP. The approach is robust against environmental noise and benefits from the ratiometric nature of the signal readout. We applied PAD to detect clinically relevant HAI bacteria (Escherichia coli, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Staphylococcus aureus). The PAD assay demonstrated detection sensitivity down to the single bacterium level and determined both drug resistance and virulence status. In summary, these new tests have the potential to become powerful tools for rapid diagnosis in the infectious disease space. They do not require highly skilled personnel or labor-intensive analyses, and the assays are quick and cost-effective. These attributes will make nanoPCR and PAD well-aligned with a POC workflow to aid physicians to initiate prompt and informed patient treatment.
Collapse
Affiliation(s)
- Chang Yeol Lee
- Center for Systems Biology, Massachusetts General Hospital Research Institute, 185 Cambridge Street, Boston, Massachusetts 02114, United States
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Boston, Massachusetts 02114, United States
- Institute for Basic Science (IBS), Center for NanoMedicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
| | - Ismail Degani
- Center for Systems Biology, Massachusetts General Hospital Research Institute, 185 Cambridge Street, Boston, Massachusetts 02114, United States
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, 50 Vassar Street, Cambridge, Massachusetts 02142, United States
| | - Jiyong Cheong
- Institute for Basic Science (IBS), Center for NanoMedicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
- Graduate Program of Nano Biomedical Engineering (NanoBME), Advanced Science Institute, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
| | - Ralph Weissleder
- Center for Systems Biology, Massachusetts General Hospital Research Institute, 185 Cambridge Street, Boston, Massachusetts 02114, United States
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Boston, Massachusetts 02114, United States
- Department of Systems Biology, Harvard Medical School, 185 Cambridge Street, Boston, Massachusetts 02114, United States
| | - Jae-Hyun Lee
- Institute for Basic Science (IBS), Center for NanoMedicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
- Graduate Program of Nano Biomedical Engineering (NanoBME), Advanced Science Institute, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
| | - Jinwoo Cheon
- Institute for Basic Science (IBS), Center for NanoMedicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
- Graduate Program of Nano Biomedical Engineering (NanoBME), Advanced Science Institute, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
- Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
| | - Hakho Lee
- Center for Systems Biology, Massachusetts General Hospital Research Institute, 185 Cambridge Street, Boston, Massachusetts 02114, United States
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Boston, Massachusetts 02114, United States
- Institute for Basic Science (IBS), Center for NanoMedicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
| |
Collapse
|
7
|
Payne NC, Kalyakina AS, Singh K, Tye MA, Mazitschek R. Bright and stable luminescent probes for target engagement profiling in live cells. Nat Chem Biol 2021; 17:1168-1177. [PMID: 34675420 PMCID: PMC8555866 DOI: 10.1038/s41589-021-00877-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 08/11/2021] [Indexed: 01/18/2023]
Abstract
The pace of progress in biomedical research directly depends on techniques that enable the quantitative interrogation of interactions between proteins and other biopolymers, or with their small-molecule ligands. Time-resolved Förster resonance energy transfer (TR-FRET) assay platforms offer high sensitivity and specificity. However, the paucity of accessible and biocompatible luminescent lanthanide complexes, which are essential reagents for TR-FRET-based approaches, and their poor cellular permeability have limited broader adaptation of TR-FRET beyond homogeneous and extracellular assay applications. Here, we report the development of CoraFluors, a new class of macrotricyclic terbium complexes, which are synthetically readily accessible, stable in biological media and exhibit photophysical and physicochemical properties that are desirable for biological studies. We validate the performance of CoraFluors in cell-free systems, identify cell-permeable analogs and demonstrate their utility in the quantitative domain-selective characterization of Keap1 ligands, as well as in isoform-selective target engagement profiling of HDAC1 inhibitors in live cells.
Collapse
Affiliation(s)
- N Connor Payne
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA, USA
- Department of Chemistry & Chemical Biology, Harvard University, Cambridge, MA, USA
| | - Alena S Kalyakina
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA, USA
- Karlsruhe Institute of Technology, Institute of Organic Chemistry, Karlsruhe, Germany
| | - Kritika Singh
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA, USA
- Department of Bioengineering, Northeastern University, Boston, MA, USA
| | - Mark A Tye
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA, USA
- Harvard Graduate School of Arts and Sciences, Cambridge, MA, USA
| | - Ralph Mazitschek
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA, USA.
- Harvard T.H. Chan School of Public Health, Boston, MA, USA.
- Broad Institute of MIT and Harvard, Cambridge, MA, USA.
| |
Collapse
|
8
|
Lohan SB, Kröger M, Schleusener J, Darvin ME, Lademann J, Streit I, Meinke MC. Characterization of radical types, penetration profile and distribution pattern of the topically applied photosensitizer THPTS in porcine skin ex vivo. Eur J Pharm Biopharm 2021; 162:50-58. [PMID: 33691169 DOI: 10.1016/j.ejpb.2021.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/19/2021] [Accepted: 03/02/2021] [Indexed: 12/28/2022]
Abstract
The topical photodynamic therapy (PDT) is mainly used in the treatment of dermato-oncological diseases. The distribution and functionality of the photosensitizer Tetrahydroporphyrin-Tetratosylat (THPTS) was investigated using microscopic and spectroscopic methods after topical application to excised porcine skin followed by irradiation. The distribution of THPTS was determined by two-photon tomography combined with fluorescence lifetime imaging (TPT/FLIM) and confocal Raman microspectroscopy (CRM). The radicals were quantified and characterized by electron paramagnetic resonance (EPR) spectroscopy. Results show a penetration depth of THPTS into the skin down to around 12 ± 5 µm. A penetration of THPTS through the stratum corneum was not clearly observable after 1 h penetration time, but cannot be excluded. The irradiation within the phototherapeutic window (spectral range of visible and near infrared light in the range ≈ 650-850 nm) is needed to activate THPTS. An incubation time of 10 min showed the highest radical production. A longer incubation time affected the functionality of THPTS, whereby significant less radicals were detectable. During PDT mainly reactive oxygen species (ROS) and lipid oxygen species (LOS) are produced. Overall, the irradiation dose per se influences the radical types formed in skin. While ROS are always prominent at low doses, LOS increase at high doses, independent of previous skin treatment and the irradiation wavelength used.
Collapse
Affiliation(s)
- S B Lohan
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt- Universität zu Berlin, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Berlin, Germany.
| | - M Kröger
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt- Universität zu Berlin, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Berlin, Germany
| | - J Schleusener
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt- Universität zu Berlin, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Berlin, Germany
| | - M E Darvin
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt- Universität zu Berlin, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Berlin, Germany
| | - J Lademann
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt- Universität zu Berlin, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Berlin, Germany
| | - I Streit
- Asclepion Laser Technologies GmbH, Jena, Germany
| | - M C Meinke
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt- Universität zu Berlin, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Berlin, Germany
| |
Collapse
|
9
|
Feruglio PF, Vinegoni C, Weissleder R. Extended dynamic range imaging for noise mitigation in fluorescence anisotropy imaging. JOURNAL OF BIOMEDICAL OPTICS 2020; 25:JBO-200159R. [PMID: 32820624 PMCID: PMC7439791 DOI: 10.1117/1.jbo.25.8.086003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 07/27/2020] [Indexed: 06/11/2023]
Abstract
SIGNIFICANCE Fluorescence polarization (FP) and fluorescence anisotropy (FA) microscopy are powerful imaging techniques that allow to translate the common FP assay capabilities into the in vitro and in vivo cellular domain. As a result, they have found potential for mapping drug-protein or protein-protein interactions. Unfortunately, these imaging modalities are ratiometric in nature and as such they suffer from excessive noise even under regular imaging conditions, preventing accurate image-feature analysis of fluorescent molecules behaviors. AIM We present a high dynamic range (HDR)-based FA imaging modality for improving image quality in FA microscopy. APPROACH The method exploits ad hoc acquisition schemes to extend the dynamic range of individual FP channels, allowing to obtain FA images with increased signal-to-noise ratio. RESULTS A direct comparison between FA images obtained with our method and the standard, clearly indicates how an HDR-based FA imaging approach allows to obtain high-quality images, with the ability to correctly resolve image features at different values of FA and over a substantially higher range of fluorescence intensities. CONCLUSION The method presented is shown to outperform standard FA imaging microscopy narrowing the spread of the propagated error and yielding higher quality images. The method can be effectively and routinely used on any commercial imaging system and could be also translated to other microscopy ratiometric imaging modalities.
Collapse
Affiliation(s)
- Paolo Fumene Feruglio
- Massachusetts General Hospital, Harvard Medical School, Center for Systems Biology, Boston, Massachusetts, United States
- University of Verona, Department of Neuroscience, Biomedicine, and Movement Sciences, Verona, Italy
- ITS Meccatronico Veneto, Vicenza, Italy
| | - Claudio Vinegoni
- Massachusetts General Hospital, Harvard Medical School, Center for Systems Biology, Boston, Massachusetts, United States
| | - Ralph Weissleder
- Massachusetts General Hospital, Harvard Medical School, Center for Systems Biology, Boston, Massachusetts, United States
- Harvard Medical School, Department of Systems Biology, Boston, Massachusetts, United States
| |
Collapse
|
10
|
de Vito G, Ricci P, Turrini L, Gavryusev V, Müllenbroich C, Tiso N, Vanzi F, Silvestri L, Pavone FS. Effects of excitation light polarization on fluorescence emission in two-photon light-sheet microscopy. BIOMEDICAL OPTICS EXPRESS 2020; 11:4651-4665. [PMID: 32923069 PMCID: PMC7449752 DOI: 10.1364/boe.396388] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/20/2020] [Accepted: 07/07/2020] [Indexed: 05/05/2023]
Abstract
Light-sheet microscopy (LSM) is a powerful imaging technique that uses a planar illumination oriented orthogonally to the detection axis. Two-photon (2P) LSM is a variant of LSM that exploits the 2P absorption effect for sample excitation. The light polarization state plays a significant, and often overlooked, role in 2P absorption processes. The scope of this work is to test whether using different polarization states for excitation light can affect the detected signal levels in 2P LSM imaging of typical biological samples with a spatially unordered dye population. Supported by a theoretical model, we compared the fluorescence signals obtained using different polarization states with various fluorophores (fluorescein, EGFP and GCaMP6s) and different samples (liquid solution and fixed or living zebrafish larvae). In all conditions, in agreement with our theoretical expectations, linear polarization oriented parallel to the detection plane provided the largest signal levels, while perpendicularly-oriented polarization gave low fluorescence signal with the biological samples, but a large signal for the fluorescein solution. Finally, circular polarization generally provided lower signal levels. These results highlight the importance of controlling the light polarization state in 2P LSM of biological samples. Furthermore, this characterization represents a useful guide to choose the best light polarization state when maximization of signal levels is needed, e.g. in high-speed 2P LSM.
Collapse
Affiliation(s)
- Giuseppe de Vito
- University of Florence, Department of Neuroscience, Psychology, Drug Research and Child Health, Viale Pieraccini 6, Florence, FI 50139, Italy
- European Laboratory for Non-Linear Spectroscopy, Via Nello Carrara 1, Sesto Fiorentino, FI 50019, Italy
| | - Pietro Ricci
- European Laboratory for Non-Linear Spectroscopy, Via Nello Carrara 1, Sesto Fiorentino, FI 50019, Italy
| | - Lapo Turrini
- European Laboratory for Non-Linear Spectroscopy, Via Nello Carrara 1, Sesto Fiorentino, FI 50019, Italy
- University of Florence, Department of Physics and Astronomy, Via Sansone 1, Sesto Fiorentino, FI 50019, Italy
| | - Vladislav Gavryusev
- European Laboratory for Non-Linear Spectroscopy, Via Nello Carrara 1, Sesto Fiorentino, FI 50019, Italy
- University of Florence, Department of Physics and Astronomy, Via Sansone 1, Sesto Fiorentino, FI 50019, Italy
| | - Caroline Müllenbroich
- European Laboratory for Non-Linear Spectroscopy, Via Nello Carrara 1, Sesto Fiorentino, FI 50019, Italy
- School of Physics and Astronomy, Kelvin Building, University of Glasgow, Glasgow, G12 8QQ, UK
- National Institute of Optics, National Research Council, Via Nello Carrara 1, Sesto Fiorentino, FI 50019, Italy
| | - Natascia Tiso
- University of Padova, Department of Biology, Via Ugo Bassi 58/B, Padua, PD 35131, Italy
| | - Francesco Vanzi
- European Laboratory for Non-Linear Spectroscopy, Via Nello Carrara 1, Sesto Fiorentino, FI 50019, Italy
- University of Florence, Department of Biology, Via Madonna del Piano 6, Sesto Fiorentino, FI 50019, Italy
| | - Ludovico Silvestri
- European Laboratory for Non-Linear Spectroscopy, Via Nello Carrara 1, Sesto Fiorentino, FI 50019, Italy
- University of Florence, Department of Physics and Astronomy, Via Sansone 1, Sesto Fiorentino, FI 50019, Italy
- National Institute of Optics, National Research Council, Via Nello Carrara 1, Sesto Fiorentino, FI 50019, Italy
| | - Francesco Saverio Pavone
- European Laboratory for Non-Linear Spectroscopy, Via Nello Carrara 1, Sesto Fiorentino, FI 50019, Italy
- University of Florence, Department of Physics and Astronomy, Via Sansone 1, Sesto Fiorentino, FI 50019, Italy
- National Institute of Optics, National Research Council, Via Nello Carrara 1, Sesto Fiorentino, FI 50019, Italy
| |
Collapse
|
11
|
Ng TS, Garlin MA, Weissleder R, Miller MA. Improving nanotherapy delivery and action through image-guided systems pharmacology. Theranostics 2020; 10:968-997. [PMID: 31938046 PMCID: PMC6956809 DOI: 10.7150/thno.37215] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Accepted: 08/04/2019] [Indexed: 12/12/2022] Open
Abstract
Despite recent advances in the translation of therapeutic nanoparticles (TNPs) into the clinic, the field continues to face challenges in predictably and selectively delivering nanomaterials for the treatment of solid cancers. The concept of enhanced permeability and retention (EPR) has been coined as a convenient but simplistic descriptor of high TNP accumulation in some tumors. However, in practice EPR represents a number of physiological variables rather than a single one (including dysfunctional vasculature, compromised lymphatics and recruited host cells, among other aspects of the tumor microenvironment) — each of which can be highly heterogenous within a given tumor, patient and across patients. Therefore, a clear need exists to dissect the specific biophysical factors underlying the EPR effect, to formulate better TNP designs, and to identify patients with high-EPR tumors who are likely to respond to TNP. The overall pharmacology of TNP is governed by an interconnected set of spatially defined and dynamic processes that benefit from a systems-level quantitative approach, and insights into the physiology have profited from the marriage between in vivo imaging and quantitative systems pharmacology (QSP) methodologies. In this article, we review recent developments pertinent to image-guided systems pharmacology of nanomedicines in oncology. We first discuss recent developments of quantitative imaging technologies that enable analysis of nanomaterial pharmacology at multiple spatiotemporal scales, and then examine reports that have adopted these imaging technologies to guide QSP approaches. In particular, we focus on studies that have integrated multi-scale imaging with computational modeling to derive insights about the EPR effect, as well as studies that have used modeling to guide the manipulation of the EPR effect and other aspects of the tumor microenvironment for improving TNP action. We anticipate that the synergistic combination of imaging with systems-level computational methods for effective clinical translation of TNPs will only grow in relevance as technologies increase in resolution, multiplexing capability, and in the ability to examine heterogeneous behaviors at the single-cell level.
Collapse
|
12
|
Vinegoni C, Feruglio PF, Gryczynski I, Mazitschek R, Weissleder R. Fluorescence anisotropy imaging in drug discovery. Adv Drug Deliv Rev 2019; 151-152:262-288. [PMID: 29410158 PMCID: PMC6072632 DOI: 10.1016/j.addr.2018.01.019] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 01/29/2018] [Accepted: 01/30/2018] [Indexed: 12/15/2022]
Abstract
Non-invasive measurement of drug-target engagement can provide critical insights in the molecular pharmacology of small molecule drugs. Fluorescence polarization/fluorescence anisotropy measurements are commonly employed in protein/cell screening assays. However, the expansion of such measurements to the in vivo setting has proven difficult until recently. With the advent of high-resolution fluorescence anisotropy microscopy it is now possible to perform kinetic measurements of intracellular drug distribution and target engagement in commonly used mouse models. In this review we discuss the background, current advances and future perspectives in intravital fluorescence anisotropy measurements to derive pharmacokinetic and pharmacodynamic measurements in single cells and whole organs.
Collapse
Affiliation(s)
- Claudio Vinegoni
- Center for System Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.
| | - Paolo Fumene Feruglio
- Center for System Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA; Department of Neurological, Biomedical and Movement Sciences, University of Verona, Verona, Italy
| | - Ignacy Gryczynski
- University of North Texas Health Science Center, Institute for Molecular Medicine, Fort Worth, TX, United States
| | - Ralph Mazitschek
- Center for System Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Ralph Weissleder
- Center for System Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| |
Collapse
|
13
|
Garattini S, Fuso Nerini I, D'Incalci M. Not only tumor but also therapy heterogeneity. Ann Oncol 2019; 29:13-19. [PMID: 29045538 DOI: 10.1093/annonc/mdx646] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Affiliation(s)
- S Garattini
- Department of Oncology, IRCCS - Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy
| | - I Fuso Nerini
- Department of Oncology, IRCCS - Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy
| | - M D'Incalci
- Department of Oncology, IRCCS - Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy
| |
Collapse
|
14
|
Axelsson H, Almqvist H, Otrocka M, Vallin M, Lundqvist S, Hansson P, Karlsson U, Lundbäck T, Seashore-Ludlow B. In Situ Target Engagement Studies in Adherent Cells. ACS Chem Biol 2018; 13:942-950. [PMID: 29433316 DOI: 10.1021/acschembio.7b01079] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A prerequisite for successful drugs is effective binding of the desired target protein in the complex environment of a living system. Drug-target engagement has typically been difficult to monitor in physiologically relevant models, and with current methods, especially, while maintaining spatial information. One recent technique for quantifying drug-target engagement is the cellular thermal shift assay (CETSA), in which ligand-induced protein stabilization is measured after a heat challenge. Here, we describe a CETSA protocol in live A431 cells for p38α (MAPK14), where remaining soluble protein is detected in situ, using high-content imaging in 384-well, microtiter plates. We validate this assay concept using a number of known p38α inhibitors and further demonstrate the potential of this technology for chemical probe and drug discovery purposes by performing a small pilot screen for novel p38α binders. Importantly, this protocol creates a workflow that is amenable to adherent cells in their native state and yields spatially resolved target engagement information measurable at the single-cell level.
Collapse
Affiliation(s)
- Hanna Axelsson
- Chemical Biology Consortium Sweden, Science for Life Laboratory, Karolinska Institutet, SE-171 65 Solna, Sweden
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 65 Solna, Sweden
| | - Helena Almqvist
- Chemical Biology Consortium Sweden, Science for Life Laboratory, Karolinska Institutet, SE-171 65 Solna, Sweden
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 65 Solna, Sweden
| | - Magdalena Otrocka
- Chemical Biology Consortium Sweden, Science for Life Laboratory, Karolinska Institutet, SE-171 65 Solna, Sweden
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 65 Solna, Sweden
| | - Michaela Vallin
- Chemical Biology Consortium Sweden, Science for Life Laboratory, Karolinska Institutet, SE-171 65 Solna, Sweden
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 65 Solna, Sweden
| | - Sara Lundqvist
- Discovery
Sciences,
IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Pia Hansson
- Discovery
Sciences,
IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Ulla Karlsson
- Discovery
Sciences,
IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Thomas Lundbäck
- Chemical Biology Consortium Sweden, Science for Life Laboratory, Karolinska Institutet, SE-171 65 Solna, Sweden
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 65 Solna, Sweden
- Discovery
Sciences,
IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Brinton Seashore-Ludlow
- Chemical Biology Consortium Sweden, Science for Life Laboratory, Karolinska Institutet, SE-171 65 Solna, Sweden
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, SE-171 76 Stockholm, Sweden
| |
Collapse
|