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Liu G, Dwivedi P, Trupke T, Hameiri Z. Deep Learning Model to Denoise Luminescence Images of Silicon Solar Cells. Adv Sci (Weinh) 2023:e2300206. [PMID: 37092559 DOI: 10.1002/advs.202300206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 03/30/2023] [Indexed: 05/03/2023]
Abstract
Luminescence imaging is widely used to identify spatial defects and extract key electrical parameters of photovoltaic devices. To reliably identify defects, high-quality images are desirable; however, acquiring such images implies a higher cost or lower throughput as they require better imaging systems or longer exposure times. This study proposes a deep learning-based method to effectively diminish the noise in luminescence images, thereby enhancing their quality for inspection and analysis. The proposed method eliminates the requirement for extra hardware expenses or longer exposure times, making it a cost-effective solution for image enhancement. This approach significantly improves image quality by >30% and >39% in terms of the peak signal-to-noise ratio and the structural similarity index, respectively, outperforming state-of-the-art classical denoising algorithms.
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Affiliation(s)
- Grace Liu
- University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Priya Dwivedi
- University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Thorsten Trupke
- University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Ziv Hameiri
- University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
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2
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Shah D, Eroy M, Fakhry J, Moffat A, Fritz K, Cole HD, Cameron CG, McFarland SA, Obaid G. Enabling In Vivo Optical Imaging of an Osmium Photosensitizer by Micellar Formulation. Pharmaceutics 2022; 14:2426. [PMID: 36365244 PMCID: PMC9693841 DOI: 10.3390/pharmaceutics14112426] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/03/2022] [Accepted: 11/07/2022] [Indexed: 07/30/2023] Open
Abstract
Osmium (Os)-based photosensitizers (PSs) exhibit unique broad, red-shifted absorption, favoring PDT activity at greater tissue depths. We recently reported on a potent Os(II) PS, rac-[Os(phen)2(IP-4T)](Cl)2 (ML18J03) with submicromolar hypoxia activity. ML18J03 exhibits a low luminescence quantum yield of 9.8 × 10-5 in PBS, which limits its capacity for in vivo luminescence imaging. We recently showed that formulating ML18J03 into 10.2 nm DSPE-mPEG2000 micelles (Mic-ML18J03) increases its luminescence quantum yield by two orders of magnitude. Here, we demonstrate that Mic-ML18J03 exhibits 47-fold improved accumulative luminescence signals in orthotopic AT-84 head and neck tumors. We show, for the first time, that micellar formulation provides up to 11.7-fold tumor selectivity for ML18J03. Furthermore, Mic-ML18J03 does not experience the concentration-dependent quenching observed with unformulated ML18J03 in PBS, and formulation reduces spectral shifting of the emission maxima during PDT (variance = 6.5 and 27.3, respectively). The Mic-ML18J03 formulation also increases the production of reactive molecular species 2-3-fold. These findings demonstrate that micellar formulation is a versatile and effective approach to enable in vivo luminescence imaging options for an otherwise quenched, yet promising, PS.
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Affiliation(s)
- Drashti Shah
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA
| | - Menitte Eroy
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA
| | - John Fakhry
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA
| | - Azophi Moffat
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA
| | - Kevin Fritz
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA
| | - Houston D. Cole
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, TX 76019, USA
| | - Colin G. Cameron
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, TX 76019, USA
| | - Sherri A. McFarland
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, TX 76019, USA
| | - Girgis Obaid
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA
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Shimadzu S, Furuya T, Ozawa Y, Fukuda H, Kondo Y. Spatio-temporal imaging of cell fate dynamics in single plant cells using luminescence microscope. Quant Plant Biol 2022; 3:e15. [PMID: 37077981 PMCID: PMC10095866 DOI: 10.1017/qpb.2022.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 05/20/2022] [Accepted: 06/20/2022] [Indexed: 05/03/2023]
Abstract
Stem cell fates are spatio-temporally regulated during plant development. Time-lapse imaging of fluorescence reporters is the most widely used method for spatio-temporal analysis of biological processes. However, excitation light for imaging fluorescence reporters causes autofluorescence and photobleaching. Unlike fluorescence reporters, luminescence proteins do not require excitation light, and therefore offer an alternative reporter for long-term and quantitative spatio-temporal analysis. We established an imaging system for luciferase, which enabled monitoring cell fate marker dynamics during vascular development in a vascular cell induction system called VISUAL. Single cells expressing the cambium marker, proAtHB8:ELUC, had sharp luminescence peaks at different time points. Furthermore, dual-color luminescence imaging revealed spatio-temporal relationships between cells that differentiated into xylem or phloem, and cells that transitioned from procambium to cambium. This imaging system enables not only the detection of temporal gene expression, but also facilitates monitoring of spatio-temporal dynamics of cell identity transitions at the single cell level.
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Affiliation(s)
- Shunji Shimadzu
- Graduate School of Science, The University of Tokyo, Tokyo, Japan
- Graduate School of Science, Kobe University, Kobe, Japan
| | - Tomoyuki Furuya
- Graduate School of Science, Kobe University, Kobe, Japan
- College of Life Sciences, Ritsumeikan University, Kusatsu, Japan
| | - Yasuko Ozawa
- Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Hiroo Fukuda
- Department of Bioscience and Biotechnology, Faculty of Bioenvironmental Science, Kyoto University of Advanced Science, Kameoka, Japan
| | - Yuki Kondo
- Graduate School of Science, Kobe University, Kobe, Japan
- Author for correspondence: Y. Kondo, E-mail:
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4
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Abstract
Biomedical luminescence imaging in the near-infrared (NIR, 700-1700 nm) region has shown great potential in visualizing biological processes and pathological conditions at cellular and animal levels, owing to the reduced tissue absorption and scattering compared to light in the visible (400-700 nm) region. To overcome the background interference and signal attenuation during intensity-based luminescence imaging, lifetime imaging has demonstrated a reliable imaging modality complementary to intensity measurement. Several selective or environment-responsive probes have been successfully developed for luminescence lifetime imaging and multiplex detection. This review summarizes recent advances in the application of luminescence lifetime imaging at cellular and animal levels in NIR-I and NIR-II regions. Finally, the challenges and further directions of luminescence lifetime imaging are also discussed.
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Affiliation(s)
- Benhao Li
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen 518060, China
- Departments of Diagnostic Radiology, Surgery, Chemical and Biomolecular Engineering, and Biomedical Engineering, Yong Loo Lin School of Medicine and Faculty of Engineering, National University of Singapore, Singapore, 119074, Singapore
- Clinical Imaging Research Centre, Centre for Translational Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore
- Nanomedicine Translational Research Program, NUS Center for Nanomedicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore
| | - Jing Lin
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen 518060, China
| | - Peng Huang
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen 518060, China
| | - Xiaoyuan Chen
- Departments of Diagnostic Radiology, Surgery, Chemical and Biomolecular Engineering, and Biomedical Engineering, Yong Loo Lin School of Medicine and Faculty of Engineering, National University of Singapore, Singapore, 119074, Singapore
- Clinical Imaging Research Centre, Centre for Translational Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore
- Nanomedicine Translational Research Program, NUS Center for Nanomedicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore
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5
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Liu Y, Zhu X, Wei Z, Feng W, Li L, Ma L, Li F, Zhou J. Customized Photothermal Therapy of Subcutaneous Orthotopic Cancer by Multichannel Luminescent Nanocomposites. Adv Mater 2021; 33:e2008615. [PMID: 34121241 DOI: 10.1002/adma.202008615] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 04/07/2021] [Indexed: 06/12/2023]
Abstract
Photothermal therapy (PTT) is a potentially advanced strategy for highly precise cancer treatment. Tumor-microenvironment-activatable agents provide useful tools for PTT, but their photothermal conversion capacities vary and cannot be evaluated in vivo; thus, a general PTT prescription does not work with individual activatable agents. Here, glutathione (GSH)-activatable nanocomposites, silicomolybdate-functionalized NaLuF4 :Yb,Er@NaLuF4 @NaLuF4 :Nd are prepared, for customized PTT of subcutaneous orthotopic cancer. By simultaneously determining intratumoral GSH concentration and the amount of accumulated agent using multiple orthogonal luminescent emissions of nanocomposites, near-infrared absorbance of photothermal conversion agents is evaluated in vivo, based on the optimized irradiating prescriptions (irradiating power density and time) established. This allows customized PTT of each individual case with high efficacy and viability. This work also includes a method for investigating individual intratumoral variation, and the development of the next generation of customized nanomedicine for efficacious PTT of subcutaneous orthotopic cancer.
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Affiliation(s)
- Yuxin Liu
- Beijing Key Laboratory for Optical Materials and Photonic Devices & Department of Chemistry, Capital Normal University, Beijing, 100048, China
- Department of Biomolecular System, Max-Planck Institute for Colloids and Interfaces, 14476, Potsdam, Germany
| | - Xingjun Zhu
- Department of Chemistry & Institutes of Biomedical Sciences & State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China
- School of Physical Science and Technology, Shanghai Tech University, Shanghai, 201210, China
| | - Zheng Wei
- Beijing Key Laboratory for Optical Materials and Photonic Devices & Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Wei Feng
- Department of Chemistry & Institutes of Biomedical Sciences & State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China
| | - Luoyuan Li
- Beijing Key Laboratory for Optical Materials and Photonic Devices & Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Liyi Ma
- Beijing Key Laboratory for Optical Materials and Photonic Devices & Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Fuyou Li
- Department of Chemistry & Institutes of Biomedical Sciences & State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China
| | - Jing Zhou
- Beijing Key Laboratory for Optical Materials and Photonic Devices & Department of Chemistry, Capital Normal University, Beijing, 100048, China
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Yan X, Lin W, Liu H, Pu W, Li J, Wu P, Ding J, Luo G, Zhang J. Wavelength-Tunable, Long Lifetime, and Biocompatible Luminescent Nanoparticles Based on a Vitamin E-Derived Material for Inflammation and Tumor Imaging. Small 2021; 17:e2100045. [PMID: 34031977 DOI: 10.1002/smll.202100045] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 02/09/2021] [Indexed: 06/12/2023]
Abstract
Luminescence imaging is one of the most effective noninvasive strategies for detection and stratification of inflammation and oxidative stress that are closely related to the pathogenesis of numerous acute and chronic diseases. Herein biocompatible nanoparticles based on a peroxalate ester derived from vitamin E (defined as OVE) are developed. In combination with different fluorophores, OVE can generate luminescence systems with emission wavelengths varying from blue to the near-infrared light in its native and nanoparticle forms, in the presence of hydrogen peroxide (H2 O2 ). The OVE-based nanoprobes exhibit high luminescence signals with extremely long lifetime, upon triggering by inflammatory conditions with abnormally elevated H2 O2 . Activated neutrophils and macrophages can be illuminated by this type of luminescent nanoprobes, with luminescence intensities positively correlated with inflammatory cell counts. In mouse models of peritonitis, alcoholic liver injury, drug-induced acute liver injury, and acute lung injury, the developed luminescence nanoprobes enable precision imaging of inflammation and disease progression. Moreover, tumors expressing a high level of H2 O2 can be shined. Importantly, the OVE-based nanoplatform shows excellent in vitro and in vivo biocompatibility.
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Affiliation(s)
- Xinhao Yan
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing, 400038, China
- College of Pharmacy and Medical Technology, Hanzhong Vocational and Technical College, Hanzhong, Shaanxi, 723000, China
| | - Wenjie Lin
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Huan Liu
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Wendan Pu
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Junhong Li
- College of Pharmacy and Medical Technology, Hanzhong Vocational and Technical College, Hanzhong, Shaanxi, 723000, China
| | - Peng Wu
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing, 400038, China
- College of Pharmacy and Medical Technology, Hanzhong Vocational and Technical College, Hanzhong, Shaanxi, 723000, China
| | - Jun Ding
- Department of Ultrasound, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Gaoxing Luo
- State Key Lab of Trauma, Burn and Combined Injury, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Jianxiang Zhang
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing, 400038, China
- State Key Lab of Trauma, Burn and Combined Injury, Third Military Medical University (Army Medical University), Chongqing, 400038, China
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7
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Fritzen DL, Giordano L, Rodrigues LCV, Monteiro JHSK. Opportunities for Persistent Luminescent Nanoparticles in Luminescence Imaging of Biological Systems and Photodynamic Therapy. Nanomaterials (Basel) 2020; 10:E2015. [PMID: 33066063 PMCID: PMC7600618 DOI: 10.3390/nano10102015] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/02/2020] [Accepted: 10/07/2020] [Indexed: 02/06/2023]
Abstract
The use of luminescence in biological systems allows us to diagnose diseases and understand cellular processes. Persistent luminescent materials have emerged as an attractive system for application in luminescence imaging of biological systems; the afterglow emission grants background-free luminescence imaging, there is no need for continuous excitation to avoid tissue and cell damage due to the continuous light exposure, and they also circumvent the depth penetration issue caused by excitation in the UV-Vis. This review aims to provide a background in luminescence imaging of biological systems, persistent luminescence, and synthetic methods for obtaining persistent luminescent materials, and discuss selected examples of recent literature on the applications of persistent luminescent materials in luminescence imaging of biological systems and photodynamic therapy. Finally, the challenges and future directions, pointing to the development of compounds capable of executing multiple functions and light in regions where tissues and cells have low absorption, will be discussed.
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Affiliation(s)
- Douglas L. Fritzen
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, São Paulo-SP 05508-000, Brazil; (D.L.F.); (L.G.)
| | - Luidgi Giordano
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, São Paulo-SP 05508-000, Brazil; (D.L.F.); (L.G.)
| | - Lucas C. V. Rodrigues
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, São Paulo-SP 05508-000, Brazil; (D.L.F.); (L.G.)
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Cacovich S, Messou D, Bercegol A, Béchu S, Yaiche A, Shafique H, Rousset J, Schulz P, Bouttemy M, Lombez L. Light-Induced Passivation in Triple Cation Mixed Halide Perovskites: Interplay between Transport Properties and Surface Chemistry. ACS Appl Mater Interfaces 2020; 12:34784-34794. [PMID: 32635710 DOI: 10.1021/acsami.0c06844] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Mixed halide perovskites have attracted a strong interest in the photovoltaic community as a result of their high power conversion efficiency and the solid opportunity to realize low-cost and industry-scalable technology. Light soaking represents one of the most promising approaches to reduce non-radiative recombination processes and thus to optimize device performances. Here, we investigate the effects of 1 sun illumination on state-of-the-art triple cation halide perovskite thin films Cs0.05(MA0.14, FA0.86)0.95 Pb (I0.84, Br0.16)3 by a combined optical and chemical characterization. Competitive passivation and degradation effects on perovskite transport properties have been analyzed by spectrally and time-resolved quantitative imaging luminescence analysis and by X-ray photoemission spectroscopy (XPS). We notice a clear improvement of the optoelectronic properties of the material, with a increase of the quasi fermi level splitting and a corresponding decrease of methylammonium MA+ for short (up to 1 h) light soaking time. However, after 5 h of light soaking, phase segregation and in-depth oxygen penetration lead to a decrease of the charge mobility.
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Affiliation(s)
- Stefania Cacovich
- IPVF, Institut Photovoltaïque d'Ile-de-France, 18 Boulevard Thomas Gobert, 91120 Palaiseau, France
- École Polytechnique, IPVF, UMR 9006, CNRS, 18 Boulevard Thomas Gobert, 91120 Palaiseau, France
| | - Davina Messou
- IPVF, Institut Photovoltaïque d'Ile-de-France, 18 Boulevard Thomas Gobert, 91120 Palaiseau, France
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180, Institut Lavoisier de Versailles, 78000 Versailles, France
| | - Adrien Bercegol
- IPVF, Institut Photovoltaïque d'Ile-de-France, 18 Boulevard Thomas Gobert, 91120 Palaiseau, France
- EDF R&D, 18 Boulevard Thomas Gobert, 91120 Palaiseau, France
| | - Solène Béchu
- IPVF, Institut Photovoltaïque d'Ile-de-France, 18 Boulevard Thomas Gobert, 91120 Palaiseau, France
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180, Institut Lavoisier de Versailles, 78000 Versailles, France
| | - Armelle Yaiche
- IPVF, Institut Photovoltaïque d'Ile-de-France, 18 Boulevard Thomas Gobert, 91120 Palaiseau, France
- EDF R&D, 18 Boulevard Thomas Gobert, 91120 Palaiseau, France
| | - Hamza Shafique
- École Polytechnique, IPVF, UMR 9006, CNRS, 18 Boulevard Thomas Gobert, 91120 Palaiseau, France
| | - Jean Rousset
- IPVF, Institut Photovoltaïque d'Ile-de-France, 18 Boulevard Thomas Gobert, 91120 Palaiseau, France
- EDF R&D, 18 Boulevard Thomas Gobert, 91120 Palaiseau, France
| | - Philip Schulz
- IPVF, Institut Photovoltaïque d'Ile-de-France, 18 Boulevard Thomas Gobert, 91120 Palaiseau, France
- École Polytechnique, IPVF, UMR 9006, CNRS, 18 Boulevard Thomas Gobert, 91120 Palaiseau, France
| | - Muriel Bouttemy
- IPVF, Institut Photovoltaïque d'Ile-de-France, 18 Boulevard Thomas Gobert, 91120 Palaiseau, France
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180, Institut Lavoisier de Versailles, 78000 Versailles, France
| | - Laurent Lombez
- IPVF, Institut Photovoltaïque d'Ile-de-France, 18 Boulevard Thomas Gobert, 91120 Palaiseau, France
- École Polytechnique, IPVF, UMR 9006, CNRS, 18 Boulevard Thomas Gobert, 91120 Palaiseau, France
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An H, Guo C, Li D, Liu R, Xu X, Guo J, Ding J, Li J, Chen W, Zhang J. Hydrogen Peroxide-Activatable Nanoparticles for Luminescence Imaging and In Situ Triggerable Photodynamic Therapy of Cancer. ACS Appl Mater Interfaces 2020; 12:17230-17243. [PMID: 32193923 DOI: 10.1021/acsami.0c01413] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Abnormally increased reactive oxygen species (ROS) are intimately related to the development and metastasis of cancer. Since hydrogen peroxide (H2O2) is a major component of ROS, molecular imaging and selective treatment in response to high H2O2 are intriguing for the management of cancers. Herein, we report novel self-assembly luminescent nanoparticles, which can be activated by H2O2, thereby serving as an effective nanotheranostics for luminescence imaging and in situ photodynamic therapy (PDT) of tumors with high H2O2. This functional nanomedicine was assembled from an amphiphilic conjugate (defined as CLP) based on chlorin e6 (Ce6) simultaneously conjugated with luminol and poly(ethylene glycol), exhibiting a well-defined core-shell nanostructure. Upon triggering by pathologically relevant levels of H2O2, CLP nanoparticles produced luminescence due to the luminol unit and simultaneous excitation of Ce6 by chemiluminescence resonance energy transfer, enabling in vitro and in vivo imaging of tumors with highly expressed H2O2. In addition, excited Ce6 can produce singlet oxygen (1O2) for in situ PDT of H2O2-high tumors and inhibiting lung metastasis, which was demonstrated by in vitro and in vivo experiments. Furthermore, preliminary studies revealed the biosafety of CLP nanoparticles. Consequently, the self-illuminating nanoparticles are promising for noninvasive imaging and therapy of tumors with high expression of H2O2.
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Affiliation(s)
- Huijie An
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, China
- Department of Pharmacy, General Hospital of Southern Theatre Command, PLA, Guangzhou 510010, China
| | - Chunhua Guo
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Dandan Li
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Renfeng Liu
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Xiaoqiu Xu
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Jiawei Guo
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Jun Ding
- Department of Ultrasound, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Jianjun Li
- Department of Oncology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Wei Chen
- Department of Radiology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Jianxiang Zhang
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, China
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Foteinou PT, Venkataraman A, Francey LJ, Anafi RC, Hogenesch JB, Doyle FJ. Computational and experimental insights into the circadian effects of SIRT1. Proc Natl Acad Sci U S A 2018; 115:11643-11648. [PMID: 30348778 PMCID: PMC6233098 DOI: 10.1073/pnas.1803410115] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The circadian clock orchestrates 24-h rhythms in physiology in most living organisms. At the molecular level, the dogma is that circadian oscillations are based on a negative transcriptional feedback loop. Recent studies found the NAD+-dependent histone deacetylase, SIRT1, directly regulates acetylation status of clock components and influences circadian amplitude in cells. While Nakahata et al. [Nakahata Y, Kaluzova M (2008) Cell 134:329-340] reported that loss of SIRT1 increases amplitude through BMAL1 acetylation, Asher et al. [Asher G, Gatfield D (2008) Cell 134:317-328] reported that loss of SIRT1 decreases amplitude through an increase in acetylated PER2. To address this SIRT1 paradox, we developed a circadian enzymatic model. Predictions from this model and experimental validation strongly align with the findings of Asher et al., with PER2 as the primary target of SIRT1. Further, the model suggested SIRT1 influences BMAL1 expression through actions on PGC1α. We validated this finding experimentally. Thus, our computational and experimental approaches suggest SIRT1 positively regulates clock function through actions on PER2 and PGC1α.
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Affiliation(s)
- Panagiota T Foteinou
- Department of Chemical Engineering, University of California, Santa Barbara, CA 93106
| | - Anand Venkataraman
- Department of Pharmacology, University of Pennsylvania School of Medicine, Philadelphia, PA 19104
- The Institute for Translational Medicine and Therapeutics, University of Pennsylvania School of Medicine, Philadelphia, PA 19104
| | - Lauren J Francey
- Department of Pharmacology, University of Pennsylvania School of Medicine, Philadelphia, PA 19104
- The Institute for Translational Medicine and Therapeutics, University of Pennsylvania School of Medicine, Philadelphia, PA 19104
| | - Ron C Anafi
- Division of Sleep Medicine, University of Pennsylvania School of Medicine, Philadelphia, PA 19104
- Center for Sleep and Circadian Neurobiology, University of Pennsylvania School of Medicine, Philadelphia, PA 19104
| | - John B Hogenesch
- Department of Pharmacology, University of Pennsylvania School of Medicine, Philadelphia, PA 19104
- The Institute for Translational Medicine and Therapeutics, University of Pennsylvania School of Medicine, Philadelphia, PA 19104
| | - Francis J Doyle
- Department of Chemical Engineering, University of California, Santa Barbara, CA 93106;
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Hsu CC, Lin SL, Chang CA. Lanthanide-Doped Core-Shell-Shell Nanocomposite for Dual Photodynamic Therapy and Luminescence Imaging by a Single X-ray Excitation Source. ACS Appl Mater Interfaces 2018; 10:7859-7870. [PMID: 29405703 DOI: 10.1021/acsami.8b00015] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Photodynamic therapy (PDT) could be highly selective and noninvasive, with low side effects as an adjuvant therapy for cancer treatment. Because excitation sources such as UV and visible lights for most of the photosensitizers do not penetrate deeply enough into biological tissues, PDT is useful only when the lesions are located within 10 mm below the skin. In addition, there is no prior example of theranostics capable of both PDT and imaging with a single deep-penetrating X-ray excitation source. Here we report a new theranostic scintillator nanoparticle (ScNP) composite in a core-shell-shell arrangement, that is, NaLuF4:Gd(35%),Eu(15%)@NaLuF4:Gd(40%)@NaLuF4:Gd(35%),Tb(15%), which is capable of being excited by a single X-ray radiation source to allow potentially deep tissue PDT and optical imaging with a low dark cytotoxicity and effective photocytotoxicity. With the X-ray excitation, the ScNPs can emit visible light at 543 nm (from Tb3+) to stimulate the loaded rose bengal (RB) photosensitizer and cause death of efficient MDA-MB-231 and MCF-7 cancer cells. The ScNPs can also emit light at 614 and 695 nm (from Eu3+) for luminescence imaging. The middle shell in the core-shell-shell ScNPs is unique to separate the Eu3+ in the core and the Tb3+ in the outer shell to prevent resonance quenching between them and to result in good PDT efficiency. Also, it was demonstrated that although the addition of a mesoporous SiO2 layer resulted in the transfer of 82.7% fluorescence resonance energy between Tb3+ and RB, the subsequent conversion of the energy from RB to generate 1O2 was hampered, although the loaded amount of the RB was almost twice that without the mSiO2 layer. A unique method to compare the wt % and mol % compositions calculated by using the morphological transmission electron microscope images and the inductively coupled plasma elemental analysis data of the core, core-shell, and core-shell-shell ScNPs is also introduced.
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Takai A, Nakano M, Saito K, Haruno R, Watanabe TM, Ohyanagi T, Jin T, Okada Y, Nagai T. Expanded palette of Nano-lanterns for real-time multicolor luminescence imaging. Proc Natl Acad Sci U S A 2015; 112:4352-6. [PMID: 25831507 DOI: 10.1073/pnas.1418468112] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Fluorescence live imaging has become an essential methodology in modern cell biology. However, fluorescence requires excitation light, which can sometimes cause potential problems, such as autofluorescence, phototoxicity, and photobleaching. Furthermore, combined with recent optogenetic tools, the light illumination can trigger their unintended activation. Because luminescence imaging does not require excitation light, it is a good candidate as an alternative imaging modality to circumvent these problems. The application of luminescence imaging, however, has been limited by the two drawbacks of existing luminescent protein probes, such as luciferases: namely, low brightness and poor color variants. Here, we report the development of bright cyan and orange luminescent proteins by extending our previous development of the bright yellowish-green luminescent protein Nano-lantern. The color change and the enhancement of brightness were both achieved by bioluminescence resonance energy transfer (BRET) from enhanced Renilla luciferase to a fluorescent protein. The brightness of these cyan and orange Nano-lanterns was ∼20 times brighter than wild-type Renilla luciferase, which allowed us to perform multicolor live imaging of intracellular submicron structures. The rapid dynamics of endosomes and peroxisomes were visualized at around 1-s temporal resolution, and the slow dynamics of focal adhesions were continuously imaged for longer than a few hours without photobleaching or photodamage. In addition, we extended the application of these multicolor Nano-lanterns to simultaneous monitoring of multiple gene expression or Ca(2+) dynamics in different cellular compartments in a single cell.
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Millar AJ, Kay SA. Integration of circadian and phototransduction pathways in the network controlling CAB gene transcription in Arabidopsis. Proc Natl Acad Sci U S A 1996; 93:15491-6. [PMID: 8986839 PMCID: PMC26432 DOI: 10.1073/pnas.93.26.15491] [Citation(s) in RCA: 182] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
The transcription of CAB genes, encoding the chlorophyll a/b-binding proteins, is rapidly induced in dark-grown Arabidopsis seedlings following a light pulse. The transient induction is followed by several cycles of a circadian rhythm. Seedlings transferred to continuous light are known to exhibit a robust circadian rhythm of CAB expression. The precise waveform of CAB expression in light-dark cycles, however, reflects a regulatory network that integrates information from photoreceptors, from the circadian clock and possibly from a developmental program. We have used the luciferase reporter system to investigate CAB expression with high time resolution. We demonstrate that CAB expression in light-grown plants exhibits a transient induction following light onset, similar to the response in dark-grown seedlings. The circadian rhythm modulates the magnitude and the kinetics of the response to light, such that the CAB promoter is not light responsive during the subjective night. A signaling pathway from the circadian oscillator must therefore antagonize the phototransduction pathways controlling the CAB promoter. We have further demonstrated that the phase of maximal CAB expression is delayed in light-dark cycles with long photoperiods, due to the entrainment of the circadian oscillator. Under short photoperiods, this pattern of entrainment ensures that dawn coincides with a phase of high light responsiveness, whereas under long photoperiods, the light response at dawn is reduced.
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Affiliation(s)
- A J Millar
- National Science Foundation Center for Biological Timing, Department of Biology, University of Virginia, Charlottesville 22903, USA.
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