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Presley KF, Falcucci T, Shaidani S, Fitzpatrick V, Barry J, Ly JT, Dalton MJ, Grusenmeyer TA, Kaplan DL. Engineered porosity for tissue-integrating, bioresorbable lifetime-based phosphorescent oxygen sensors. Biomaterials 2023; 301:122286. [PMID: 37643490 DOI: 10.1016/j.biomaterials.2023.122286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 08/05/2023] [Accepted: 08/18/2023] [Indexed: 08/31/2023]
Abstract
Versatile silk protein-based material formats were studied to demonstrate bioresorbable, implantable optical oxygen sensors that can integrate with the surrounding tissues. The ability to continuously monitor tissue oxygenation in vivo is desired for a range of medical applications. Silk was chosen as the matrix material due to its excellent biocompatibility, its unique chemistry that facilitates interactions with chromophores, and the potential to tune degradation time without altering chemical composition. A phosphorescent Pd (II) benzoporphyrin chromophore was incorporated to impart oxygen sensitivity. Organic solvent-based processing methods using 1,1,1,3,3,3-hexafluoro-2-propanol were used to fabricate: 1) silk-chromophore films with varied thickness and 2) silk-chromophore sponges with interconnected porosity. All compositions were biocompatible and exhibited photophysical properties with oxygen sensitivities (i.e., Stern-Volmer quenching rate constants of 2.7-3.2 × 104 M-1) useful for monitoring physiological tissue oxygen levels and for detecting deviations from normal behavior (e.g., hyperoxia). The potential to tune degradation time without significantly impacting photophysical properties was successfully demonstrated. Furthermore, the ability to consistently monitor tissue oxygenation in vivo was established via a multi-week rodent study. Histological assessments indicated successful tissue integration for the sponges, and this material format responded more quickly to various oxygen challenges than the film samples.
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Affiliation(s)
- Kayla F Presley
- Air Force Research Laboratory, Materials and Manufacturing Directorate, 2179 12th Street, Wright-Patterson AFB, Ohio, 45433, United States; UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH, 45432, United States.
| | - Thomas Falcucci
- Tufts University, Biomedical Engineering, 4 Colby Street, Medford, MA, 02155, United States
| | - Sawnaz Shaidani
- Tufts University, Biomedical Engineering, 4 Colby Street, Medford, MA, 02155, United States
| | - Vincent Fitzpatrick
- Tufts University, Biomedical Engineering, 4 Colby Street, Medford, MA, 02155, United States
| | - Jonah Barry
- Tufts University, Biomedical Engineering, 4 Colby Street, Medford, MA, 02155, United States
| | - Jack T Ly
- Air Force Research Laboratory, Materials and Manufacturing Directorate, 2179 12th Street, Wright-Patterson AFB, Ohio, 45433, United States; UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH, 45432, United States
| | - Matthew J Dalton
- Air Force Research Laboratory, Materials and Manufacturing Directorate, 2179 12th Street, Wright-Patterson AFB, Ohio, 45433, United States
| | - Tod A Grusenmeyer
- Air Force Research Laboratory, Materials and Manufacturing Directorate, 2179 12th Street, Wright-Patterson AFB, Ohio, 45433, United States.
| | - David L Kaplan
- Tufts University, Biomedical Engineering, 4 Colby Street, Medford, MA, 02155, United States.
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2
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Chao T, Wang J, Dong X, Ren J, Zhang H, Song R, Xie Z. Defects and Structural Limitation-Induced Carbon Dots-Silica Hybrid Materials with Ultralong Room Temperature Phosphorescence. J Phys Chem Lett 2022; 13:9558-9563. [PMID: 36201597 DOI: 10.1021/acs.jpclett.2c02647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Carbon dots-based room temperature phosphorescent (RTP) materials have attracted widespread attention owing to their excellent optical properties. However, there still is a challenge to fabricate carbon dots-based materials simultaneously showing long RTP lifetime and high phosphorescent quantum yield. Herein, we have designed a kind of carbon dots-silica hybrid material that can produce RTP emission with ultralong lifetime and also high phosphorescent quantum yield (1.3 s and 11.22%). Both chemical and optical analytical characterizations indicate the source of the outstanding RTP performance as the synergistic strategy of abundant electron traps, highly rigid network, and stable covalent bond. The findings provide a new design idea to achieve novel carbon dots-based RTP materials, showing broad application prospects in optical anticounterfeiting, optoelectronics, and others.
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Affiliation(s)
- Tianyu Chao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- Sino-Danish Center for Education and Research, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jingjing Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, 100083, China
| | - Xuezhe Dong
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Junkai Ren
- Laboratory of Materials Science and Nanotechnology, Department of Chemistry and Pharmacy, University of Sassari, CR-INSTM, Via Vienna 2, Sassari, 07100, Italy
| | - Hailong Zhang
- State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, 100083, China
| | - Rui Song
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zheng Xie
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
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3
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Yao J, Kong J, Kong L, Wang X, Shi W, Lu C. The phosphorescence nanocomposite thin film with rich oxygen vacancy: Towards sensitive oxygen sensor. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.11.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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4
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Highly sensitive and quantitative biodetection with lipid-polymer hybrid nanoparticles having organic room-temperature phosphorescence. Biosens Bioelectron 2021; 199:113889. [PMID: 34968954 DOI: 10.1016/j.bios.2021.113889] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 12/09/2021] [Accepted: 12/10/2021] [Indexed: 02/07/2023]
Abstract
A versatile organic room-temperature phosphorescence (RTP)-based "turn on" biosensor platform has been devised with high sensitivity by combining oxygen-sensitive lipid-polymer hybrid RTP nanoparticles with a signal-amplifying enzymatic oxygen scavenging reaction in aqueous solutions. When integrated with a sandwich-DNA hybridization assay on 96-well plates, our phosphorimetric sensor demonstrates sequence-specific detection of a cell-free cancer biomarker, a TP53 gene fragment, with a sub-picomolar (0.5 p.m.) detection limit. This assay is compatible with detecting cell-free nucleic acids in human urine samples. Simply by re-programming the detection probe, our unique methodology can be adapted to a broad range of biosensor applications for biomarkers of great clinical importance but difficult to detect due to their low abundance in vivo.
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5
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DeRosa CA, Luke AM, Anderson K, Reineke TM, Tolman WB, Bates FS, Hillmyer MA. Regioregular Polymers from Biobased ( R)-1,3-Butylene Carbonate. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00828] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Christopher A. DeRosa
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Anna M. Luke
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Kendra Anderson
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Theresa M. Reineke
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - William B. Tolman
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Frank S. Bates
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Marc A. Hillmyer
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
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6
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Phosphorescence-based ratiometric probes: Design, preparation and applications in sensing, imaging and biomedicine therapy. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213694] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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7
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Collot M. Recent advances in dioxaborine-based fluorescent materials for bioimaging applications. MATERIALS HORIZONS 2021; 8:501-514. [PMID: 34821266 DOI: 10.1039/d0mh01186j] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Fluorescent materials are continuously contributing to important advances in the field of bioimaging. Among these materials, dioxaborine-based fluorescent materials (DBFM) are arousing growing interest. Due to their rigid structures conferred by a cyclic boron complex, DBFM possess appealing photophysical properties including high extinction coefficients and quantum yields as well as emission in the near infrared, enhanced photostability and high two-photon absorption. We herein discuss the recent advances of DBFM that found use in bioimaging applications. This review covers the development of fluorescent molecular probes for biomolecules (DNA, proteins), small molecules (cysteine, H2O2, oxygen), ions and the environment (polarity, viscosity) as well as polymers and nanomaterials used in bioimaging. This review aims at providing a comprehensive and critical insight on DBFM by highlighting the assets of these promising materials in bioimaging but also by pointing out their limitations that would require further developments.
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Affiliation(s)
- Mayeul Collot
- Laboratoire de Bioimagerie et Pathologies, UMR 7021, CNRS/Université de Strasbourg, 74 route du Rhin, 67401 Illkirch-Graffenstaden, France.
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8
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Ito S, Gon M, Tanaka K, Chujo Y. Recent developments in stimuli-responsive luminescent polymers composed of boron compounds. Polym Chem 2021. [DOI: 10.1039/d1py01170g] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
This review summarizes recent developments in stimuli-responsive luminescent polymers with boron chromophores, including three- and four-coordinated compounds. Sensing mechanisms based on the features of boron and polymer structures are described.
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Affiliation(s)
- Shunichiro Ito
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Masayuki Gon
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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9
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Yang T, Zhan L, Huang CZ. Recent insights into functionalized electrospun nanofibrous films for chemo-/bio-sensors. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.115813] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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10
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Schilling K, El Khatib M, Plunkett S, Xue J, Xia Y, Vinogradov SA, Brown E, Zhang X. Electrospun Fiber Mesh for High-Resolution Measurements of Oxygen Tension in Cranial Bone Defect Repair. ACS APPLIED MATERIALS & INTERFACES 2019; 11:33548-33558. [PMID: 31436082 PMCID: PMC6916729 DOI: 10.1021/acsami.9b08341] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Tissue oxygenation is one of the key determining factors in bone repair and bone tissue engineering. Adequate tissue oxygenation is essential for survival and differentiation of the bone-forming cells and ultimately the success of bone tissue regeneration. Two-photon phosphorescence lifetime microscopy (2PLM) has been successfully applied in the past to image oxygen distributions in tissue with high spatial resolution. However, delivery of phosphorescent probes into avascular compartments, such as those formed during early bone defect healing, poses significant problems. Here, we report a multifunctional oxygen-reporting fibrous matrix fabricated through encapsulation of a hydrophilic oxygen-sensitive, two-photon excitable phosphorescent probe, PtP-C343, in the core of fibers during coaxial electrospinning. The oxygen-sensitive fibers support bone marrow stromal cell growth and differentiation and at the same time enable real-time high-resolution probing of partial pressures of oxygen via 2PLM. The hydrophilicity of the probe facilitates its gradual release into the nearby microenvironment, allowing fibers to act as a vehicle for probe delivery into the healing tissue. In conjunction with a cranial defect window chamber model, which permits simultaneous imaging of the bone and neovasculature in vivo via two-photon laser scanning microscopy, the oxygen-reporting fibers provide a useful tool for minimally invasive, high-resolution, real-time 3D mapping of tissue oxygenation during bone defect healing, facilitating studies aimed at understanding the healing process and advancing design of tissue-engineered constructs for enhanced bone repair and regeneration.
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Affiliation(s)
- Kevin Schilling
- Department of Biomedical Engineering, University of Rochester, Rochester, NY 14620, USA
- Center for Musculoskeletal Research, University of Rochester, School of Medicine and Dentistry, Rochester, NY 146421, USA
| | - Mirna El Khatib
- Departments of Biochemistry and Biophysics and of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Shane Plunkett
- Departments of Biochemistry and Biophysics and of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jiajia Xue
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - Sergei A. Vinogradov
- Departments of Biochemistry and Biophysics and of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA
- Corresponding authors contact information: Xinping Zhang, The Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY 14642, USA, ; Edward Brown, Department of Biomedical Engineering, University of Rochester, Goergen Hall Box 270168Rochester, NY 14642, USA, ; Sergei A. Vinogradov, Department of Biochemistry and Biophysics, Perelman School of Medicine, Department of Chemistry, School of Arts and Sciences University of Pennsylvania Philadelphia, PA 19104,
| | - Edward Brown
- Department of Biomedical Engineering, University of Rochester, Rochester, NY 14620, USA
- Corresponding authors contact information: Xinping Zhang, The Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY 14642, USA, ; Edward Brown, Department of Biomedical Engineering, University of Rochester, Goergen Hall Box 270168Rochester, NY 14642, USA, ; Sergei A. Vinogradov, Department of Biochemistry and Biophysics, Perelman School of Medicine, Department of Chemistry, School of Arts and Sciences University of Pennsylvania Philadelphia, PA 19104,
| | - Xinping Zhang
- Department of Biomedical Engineering, University of Rochester, Rochester, NY 14620, USA
- Center for Musculoskeletal Research, University of Rochester, School of Medicine and Dentistry, Rochester, NY 146421, USA
- Corresponding authors contact information: Xinping Zhang, The Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY 14642, USA, ; Edward Brown, Department of Biomedical Engineering, University of Rochester, Goergen Hall Box 270168Rochester, NY 14642, USA, ; Sergei A. Vinogradov, Department of Biochemistry and Biophysics, Perelman School of Medicine, Department of Chemistry, School of Arts and Sciences University of Pennsylvania Philadelphia, PA 19104,
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11
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Zhou Y, Qin W, Du C, Gao H, Zhu F, Liang G. Long‐Lived Room‐Temperature Phosphorescence for Visual and Quantitative Detection of Oxygen. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906312] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Yusheng Zhou
- PCFM LabSchool of Materials Science and EngineeringSun Yat-sen University Guangzhou 510275 China
| | - Wei Qin
- PCFM LabSchool of Materials Science and EngineeringSun Yat-sen University Guangzhou 510275 China
| | - Cheng Du
- PCFM LabSchool of Materials Science and EngineeringSun Yat-sen University Guangzhou 510275 China
| | - Haiyang Gao
- PCFM LabSchool of Materials Science and EngineeringSun Yat-sen University Guangzhou 510275 China
| | - Fangming Zhu
- PCFM LabSchool of ChemistrySun Yat-sen University Guangzhou 510275 China
| | - Guodong Liang
- PCFM LabSchool of Materials Science and EngineeringSun Yat-sen University Guangzhou 510275 China
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12
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Zhou Y, Qin W, Du C, Gao H, Zhu F, Liang G. Long-Lived Room-Temperature Phosphorescence for Visual and Quantitative Detection of Oxygen. Angew Chem Int Ed Engl 2019; 58:12102-12106. [PMID: 31233271 DOI: 10.1002/anie.201906312] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 06/19/2019] [Indexed: 12/18/2022]
Abstract
An unconventional organic molecule (TBBU) showing obvious long-lived room temperature phosphorescence (RTP) is reported. X-ray single crystal analysis demonstrates that TBBU molecules are packed in a unique fashion with side-by-side arranged intermolecular aromatic rings, which is entirely different from the RTP molecules reported to date. Theoretical calculations verify that the extraordinary intermolecular interaction between neighboring molecules plays an important role in RTP of TBBU crystals. More importantly, the polymer film doped with TBBU inherits its distinctive RTP property, which is highly sensitive to oxygen. The color of the doped film changes and its RTP lifetime drops abruptly through a dynamic collisional quenching mechanism with increasing oxygen fraction, enabling visual and quantitative detection of oxygen. Through analyzing the grayscale of the phosphorescence images, a facile method is developed for rapid, visual, and quantitative detection of oxygen in the air.
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Affiliation(s)
- Yusheng Zhou
- PCFM Lab, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Wei Qin
- PCFM Lab, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Cheng Du
- PCFM Lab, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Haiyang Gao
- PCFM Lab, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Fangming Zhu
- PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, China
| | - Guodong Liang
- PCFM Lab, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
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13
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Plasmonic nanoplatform for point-of-care testing trace HCV core protein. Biosens Bioelectron 2019; 147:111488. [PMID: 31350137 DOI: 10.1016/j.bios.2019.111488] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 06/18/2019] [Accepted: 06/29/2019] [Indexed: 12/29/2022]
Abstract
Early diagnosis of hepatitis C virus (HCV) infection is still urgently desired as there is a global healthy burden and no vaccine available. In this work, a plasmonic nanoplatform was engineered with catalytic hairpin assembly (CHA) amplification reaction specifically of HCV core protein (HCVcp), G-quadruplex/hemin DNAzyme and nanofibrous membrane together. HCVcp was detected in whole serum at the ultralow concentration of 1.0 × 10-4 pg/mL with naked eye. By testing serum samples from 30 donors with different viral loads, detection sensitivity of the plasmonic nanoplatform turned out to be much better than that of the commercial ELISA kit. In addition, the plasmonic nanoplatform exhibited high specificity, excellent reusability and long-term stability. Naked-eye detection based on the plasmonic nanoplatform is expected to have potential applications in point-of-care testing (POCT) and early diagnosis of hepatitis C and other infectious diseases.
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14
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Zhao H, Zang L, Xu K, Kou M, Zhang Z. Enhanced oxygen sensing sensitivity by eliminating the protection of triplet phosphorescence. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 217:310-314. [PMID: 30953923 DOI: 10.1016/j.saa.2019.03.107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 03/25/2019] [Accepted: 03/28/2019] [Indexed: 06/09/2023]
Abstract
High oxygen sensitivity (the slope of the Stern-Volmer plot reaches 0.73/μM) is achieved with a phosphorescence indicator, gadolinium-hematoporphyrin monomethyl ether (Gd-HMME), by decreasing the extent of its protection. In air-saturated solution, the phosphorescence quantum efficiency (QE) of Gd-HMME in a non-rigid microenvironment is lower than that in a rigid microenvironment. In contrast, when oxygen is removed, the QE of Gd-HMME in the non-rigid microenvironment was found to be same as that of Gd-HMME in the rigid microenvironment. This indicates that Gd-HMME is much more sensitive to oxygen in the non-rigid microenvironment. The oxygen sensitivity of Gd-HMME was found to increase as the rigidity of its microenvironment decreases. The oxygen response of Gd-HMME without any protection reaches 240 (0-374 μM oxygen), whereas that in the rigid microenvironment is only 3 in this range. The measurement precision of Gd-HMME without any protection is lower than that in the rigid microenvironment. These results indicate that the measurement of oxygen in different concentration ranges would require the rigidity of the microenvironment to be varied. Gd-HMME without any protection can be applied to detect oxygen as low as 0.1 μM. The detection limit of oxygen was evaluated to be as low as 20 nM based on Gd-HMME without any protection.
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Affiliation(s)
- Huimin Zhao
- Shandong Provincial Engineering and Technical Center of Light Manipulations, Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Ji'nan 250014, China.
| | - Lixin Zang
- Shandong Provincial Engineering and Technical Center of Light Manipulations, Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Ji'nan 250014, China.
| | - Kehua Xu
- Shandong Provincial Engineering and Technical Center of Light Manipulations, Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Ji'nan 250014, China
| | - Meng Kou
- Shandong Provincial Engineering and Technical Center of Light Manipulations, Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Ji'nan 250014, China
| | - Zhiguo Zhang
- Condensed Matter Science and Technology Institute and Department of Physics, Harbin Institute of Technology, Harbin 150080, China
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15
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Abstract
Representative types of boron-based molecular systems that respond to external stimuli such as temperature, pressure, light, or chemicals (oxygen, acid, base etc.) are described in this review article. The boron molecules are classified according to their operating mechanisms, with emphasis on systems, which are based on switchable boron-donor bonds and switchable excited states.
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Affiliation(s)
- Soren K. Mellerup
- Department of Chemistry
- Queen's University
- Kingston
- Canada
- Institut für Anorganische Chemie
| | - Suning Wang
- Department of Chemistry
- Queen's University
- Kingston
- Canada
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials
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16
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Yang T, Li CM, He JH, Chen B, Li YF, Huang CZ. Ratiometrically Fluorescent Electrospun Nanofibrous Film as a Cu2+-Mediated Solid-Phase Immunoassay Platform for Biomarkers. Anal Chem 2018; 90:9966-9974. [DOI: 10.1021/acs.analchem.8b02286] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
| | - Chun Mei Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, People’s Republic of China
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17
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Mao Y, Liu Z, Liang L, Zhou Y, Qiao Y, Mei Z, Zhou B, Tian Y. Silver Nanowire-Induced Sensitivity Enhancement of Optical Oxygen Sensors Based on AgNWs-Palladium Octaethylporphine-Poly(methyl methacrylate) Microfiber Mats Prepared by Electrospinning. ACS OMEGA 2018; 3:5669-5677. [PMID: 31458766 PMCID: PMC6641934 DOI: 10.1021/acsomega.8b00115] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 02/26/2018] [Indexed: 05/25/2023]
Abstract
Sensitivity enhancement of optical oxygen sensors is crucial for the characterization of nearly anoxic systems and oxygen quantification in trace amounts. In this work, for the first time we presented the introduction of silver nanowires (AgNWs) as a sensitivity booster for optical oxygen sensors based on AgNWs-palladium octaethylporphine-poly(methyl methacrylate) (AgNWs@PdOEP-PMMA) microfiber mats prepared by electrospinning. Herein, a series of sensing microfiber mats with different loading ratios of high aspect ratio AgNWs were fabricated, and the corresponding sensitivity enhancement was systematically investigated. With increasing incorporated ratios, the AgNWs@PdOEP-PMMA-sensing microfiber mats exhibited a swift response (approx. 1.8 s) and a dramatic sensitivity enhancement (by 243% for the range of oxygen concentration 0-10% and 235% for the range of oxygen concentration 0-100%) when compared to the pure PdOEP-PMMA microfiber mat. Additionally, the as-prepared sensing films were experimentally confirmed to be highly photostable and reproducible. The advantages of AgNW-induced sensitivity enhancement could be useful for the rational design and realization of revolutionary highly sensitive sensors and expected to be readily applicable to many other high-performance gas sensor devices.
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Affiliation(s)
- Yongyun Mao
- Institute
of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau 999078, China
- Department
of Materials Science and Engineering, Southern
University of Science and Technology, No. 1088, Xueyuan Rd., Xili, Nanshan District, Shenzhen, Guangdong 518055, China
| | - Zhihe Liu
- State
Key Laboratory on Integrated Optoelectronics, College of Electronic
Science and Engineering, Jilin University, Changchun 130012, China
| | - Lanfeng Liang
- Department
of Materials Science and Engineering, Southern
University of Science and Technology, No. 1088, Xueyuan Rd., Xili, Nanshan District, Shenzhen, Guangdong 518055, China
| | - Yifei Zhou
- Department
of Materials Science and Engineering, Southern
University of Science and Technology, No. 1088, Xueyuan Rd., Xili, Nanshan District, Shenzhen, Guangdong 518055, China
| | - Yuan Qiao
- Department
of Materials Science and Engineering, Southern
University of Science and Technology, No. 1088, Xueyuan Rd., Xili, Nanshan District, Shenzhen, Guangdong 518055, China
| | - Zhipeng Mei
- Department
of Materials Science and Engineering, Southern
University of Science and Technology, No. 1088, Xueyuan Rd., Xili, Nanshan District, Shenzhen, Guangdong 518055, China
| | - Bingpu Zhou
- Institute
of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau 999078, China
| | - Yanqing Tian
- Department
of Materials Science and Engineering, Southern
University of Science and Technology, No. 1088, Xueyuan Rd., Xili, Nanshan District, Shenzhen, Guangdong 518055, China
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18
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Abstract
Herein, we report a carbazole (Cz) ligand that displays distinct turn-on fluorescence signals upon interaction with human telomeric G-quadruplex ( h-TELO) and nuclease enzymes. Interestingly, Cz selectively binds and stabilizes the mixed hybrid topology of h-TELO G-quadruplex that withstands digestion by exonucleases and nuclease S1. The distinct fluorescence signatures of Cz-stabilized h-TELO with nucleases are used to design conceptually novel DNA devices for selectively detecting the enzymatic activity of DNase I as well as performing logic operations. An INHIBIT logic gate is constructed using h-TELO and DNase I as the inputs while the inputs of h-TELO and nuclease S1 form a YES logic gate. Furthermore, a two-input two-output reusable logic device with "multireset" function is developed by using h-TELO and DNase I as inputs. On the basis of this platform, combinatorial logic systems (INHIBIT-INHIBIT and NOR-OR) have been successfully installed using different combinations of nucleases as inputs. Moreover, this new strategy of using a synthetic dual emissive probe and enzyme/DNA inputs for constructing reusable logic device may find important applications in biological computing and information processing.
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Affiliation(s)
- Manish Debnath
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Rakesh Paul
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Deepanjan Panda
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Jyotirmayee Dash
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Kolkata 700032, India
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19
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Bowers DT, Olingy CE, Chhabra P, Langman L, Merrill PH, Linhart RS, Tanes ML, Lin D, Brayman KL, Botchwey EA. An engineered macroencapsulation membrane releasing FTY720 to precondition pancreatic islet transplantation. J Biomed Mater Res B Appl Biomater 2018; 106:555-568. [PMID: 28240814 PMCID: PMC5572559 DOI: 10.1002/jbm.b.33862] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 12/28/2016] [Accepted: 01/26/2017] [Indexed: 02/06/2023]
Abstract
Macroencapsulation is a powerful approach to increase the efficiency of extrahepatic pancreatic islet transplant. FTY720, a small molecule that activates signaling through sphingosine-1-phosphate receptors, is immunomodulatory and pro-angiogenic upon sustained delivery from biomaterials. While FTY720 (fingolimod, Gilenya) has been explored for organ transplantation, in the present work the effect of locally released FTY720 from novel nanofiber-based macroencapsulation membranes is explored for islet transplantation. We screened islet viability during culture with FTY720 and various biodegradable polymers. Islet viability is significantly reduced by the addition of high doses (≥500 ng/mL) of soluble FTY720. Among the polymers screened, islets have the highest viability when cultured with poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV). Therefore, PHBV was blended with polycaprolactone (PCL) for mechanical stability and electrospun into nanofibers. Islets had no detectable function ex vivo following 5 days or 12 h of subcutaneous implantation within our engineered device. Subsequently, we explored a preconditioning scheme in which islets are transplanted 2 weeks after FTY720-loaded nanofibers are implanted. This allows FTY720 to orchestrate a local regenerative milieu while preventing premature transplantation into avascular sites that contain high concentrations of FTY720. These results provide a foundation and motivation for further investigation into the use of FTY720 in preconditioning sites for efficacious islet transplantation. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 555-568, 2018.
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Affiliation(s)
- Daniel T Bowers
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, 22903
| | - Claire E Olingy
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia, 30332-0363
| | - Preeti Chhabra
- Department of Surgery, University of Virginia, Charlottesville, Virginia, 22903
| | - Linda Langman
- Department of Surgery, University of Virginia, Charlottesville, Virginia, 22903
| | - Parker H Merrill
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, 22903
| | - Ritu S Linhart
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, 22903
| | - Michael L Tanes
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, 22903
| | - Dan Lin
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, 22903
| | - Kenneth L Brayman
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, 22903
- Department of Surgery, University of Virginia, Charlottesville, Virginia, 22903
| | - Edward A Botchwey
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, 22903
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia, 30332-0363
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20
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Sun M, Wang K, Oupický D. Advances in Stimulus-Responsive Polymeric Materials for Systemic Delivery of Nucleic Acids. Adv Healthc Mater 2018; 7:10.1002/adhm.201701070. [PMID: 29227047 PMCID: PMC5821579 DOI: 10.1002/adhm.201701070] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 10/13/2017] [Indexed: 01/02/2023]
Abstract
Polymeric materials that respond to a variety of endogenous and external stimuli are actively developed to overcome the main barriers to successful systemic delivery of therapeutic nucleic acids. Here, an overview of viable stimuli that are proved to improve systemic delivery of nucleic acids is provided. The main focus is placed on nucleic acid delivery systems (NADS) based on polymers that respond to pathological or physiological changes in pH, redox state, enzyme levels, hypoxia, and reactive oxygen species levels. Additional discussion is focused on NADS suitable for applications that use external stimuli, such as light, ultrasound, and local hyperthermia.
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Affiliation(s)
- Minjie Sun
- State Key Laboratory of Natural Medicines, Key Laboratory on Protein Chemistry and Structural Biology, Department of Pharmaceutics, China Pharmaceutical University, Nanjing, 210009, P.R. China
| | - Kaikai Wang
- State Key Laboratory of Natural Medicines, Key Laboratory on Protein Chemistry and Structural Biology, Department of Pharmaceutics, China Pharmaceutical University, Nanjing, 210009, P.R. China
| | - David Oupický
- State Key Laboratory of Natural Medicines, Key Laboratory on Protein Chemistry and Structural Biology, Department of Pharmaceutics, China Pharmaceutical University, Nanjing, 210009, P.R. China
- Center for Drug Delivery and Nanomedicine, Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE 68198, United States
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21
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Tanes ML, Xue J, Xia Y. A General Strategy for Generating Gradients of Bioactive Proteins on Electrospun Nanofiber Mats by Masking with Bovine Serum Albumin. J Mater Chem B 2017; 5:5580-5587. [PMID: 28848651 PMCID: PMC5571829 DOI: 10.1039/c7tb00974g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Electrospun nanofibers are widely used in tissue engineering owing to their capability to mimic the structures and architectures of various types of extracellular matrices. However, it has been difficult to incorporate a biochemical cue into the physical cue provided by the nanofibers. Here we report a simple and versatile method for generating gradients of bioactive proteins on nanofiber mats. We establish that the adsorption of bovine serum albumin (BSA) onto nanofibers is a time- and concentration-dependent process. By linearly increasing the volume of BSA solution introduced into a container, a gradient in BSA is readily generated across the length of a vertically oriented strip of nanofibers. Next, the bare regions uncovered by BSA can be filled with the bioactive protein of interest. In demonstrating the potential application, we examine the outgrowth of neurites from dorsal root ganglion (DRG) isolated from chick embryos and then seeded on aligned polycaprolactone nanofibers covered by nerve growth factor (NGF) with a uniform coverage or in a gradient. In the case of uniform coverage, the neurites extending from DRG show essentially the same length on either side of the DRG cell mass. For the sample with a gradient in NGF, the neurites extending along the gradient (i.e., increase of NGF concentration) were significantly longer than the neurites extending against the gradient.
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Affiliation(s)
- Michael L Tanes
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
| | - Jiajia Xue
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
- School of Chemistry and Biochemistry, School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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22
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DeRosa CA, Kolpaczynska M, Kerr C, Daly ML, Morris WA, Fraser CL. Oxygen-Sensing Difluoroboron Thienyl Phenyl β-Diketonate Polylactides. Chempluschem 2016; 82:399-406. [DOI: 10.1002/cplu.201600520] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 11/17/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Christopher A. DeRosa
- Department of Chemistry; University of Virginia; McCormick Road Charlottesville VA 22904 USA
| | - Milena Kolpaczynska
- Department of Chemistry; University of Virginia; McCormick Road Charlottesville VA 22904 USA
| | - Caroline Kerr
- Department of Chemistry; University of Virginia; McCormick Road Charlottesville VA 22904 USA
| | - Margaret L. Daly
- Department of Chemistry; University of Virginia; McCormick Road Charlottesville VA 22904 USA
| | - William A. Morris
- Department of Chemistry; University of Virginia; McCormick Road Charlottesville VA 22904 USA
| | - Cassandra L. Fraser
- Department of Chemistry; University of Virginia; McCormick Road Charlottesville VA 22904 USA
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23
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Li X, Li Z, Wang L, Ma G, Meng F, Pritchard RH, Gill EL, Liu Y, Huang YYS. Low-Voltage Continuous Electrospinning Patterning. ACS APPLIED MATERIALS & INTERFACES 2016; 8:32120-32131. [PMID: 27807979 DOI: 10.1021/acsami.6b07797] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Electrospinning is a versatile technique for the construction of microfibrous and nanofibrous structures with considerable potential in applications ranging from textile manufacturing to tissue engineering scaffolds. In the simplest form, electrospinning uses a high voltage of tens of thousands volts to draw out ultrafine polymer fibers over a large distance. However, the high voltage limits the flexible combination of material selection, deposition substrate, and control of patterns. Prior studies show that by performing electrospinning with a well-defined "near-field" condition, the operation voltage can be decreased to the kilovolt range, and further enable more precise patterning of fibril structures on a planar surface. In this work, by using solution dependent "initiators", we demonstrate a further lowering of voltage with an ultralow voltage continuous electrospinning patterning (LEP) technique, which reduces the applied voltage threshold to as low as 50 V, simultaneously permitting direct fiber patterning. The versatility of LEP is shown using a wide range of combination of polymer and solvent systems for thermoplastics and biopolymers. Novel functionalities are also incorporated when a low voltage mode is used in place of a high voltage mode, such as direct printing of living bacteria; the construction of suspended single fibers and membrane networks. The LEP technique reported here should open up new avenues in the patterning of bioelements and free-form nano- to microscale fibrous structures.
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Affiliation(s)
- Xia Li
- Cavendish Laboratory, University of Cambridge , JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Zhaoying Li
- Department of Engineering, University of Cambridge , Trumpington Street, Cambridge, CB2 1PZ, United Kingdom
| | - Liyun Wang
- Department of Food Science and Technology, Jiangnan University , Wuxi 214122, China
| | - Guokun Ma
- State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China , Chengdu 610054, China
| | - Fanlong Meng
- Cavendish Laboratory, University of Cambridge , JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Robyn H Pritchard
- Cavendish Laboratory, University of Cambridge , JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Elisabeth L Gill
- Department of Engineering, University of Cambridge , Trumpington Street, Cambridge, CB2 1PZ, United Kingdom
| | - Ye Liu
- Department of Engineering, University of Cambridge , Trumpington Street, Cambridge, CB2 1PZ, United Kingdom
| | - Yan Yan Shery Huang
- Department of Engineering, University of Cambridge , Trumpington Street, Cambridge, CB2 1PZ, United Kingdom
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24
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DeRosa CA, Seaman SA, Mathew AS, Gorick CM, Fan Z, Demas JN, Peirce SM, Fraser CL. Oxygen Sensing Difluoroboron β-Diketonate Polylactide Materials with Tunable Dynamic Ranges for Wound Imaging. ACS Sens 2016; 1:1366-1373. [PMID: 28042606 DOI: 10.1021/acssensors.6b00533] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Difluoroboron β-diketonate poly(lactic acid) materials exhibit both fluorescence (F) and oxygen sensitive room-temperature phosphorescence (RTP). Introduction of halide heavy atoms (Br and I) is an effective strategy to control the oxygen sensitivity in these materials. A series of naphthyl-phenyl (nbm) dye derivatives with hydrogen, bromide and iodide substituents were prepared for comparison. As nanoparticles, the hydrogen derivative was hypersensitive to oxygen (0-0.3%), while the bromide analogue was suited for hypoxia detection (0-3% O2). The iodo derivative, BF2nbm(I)PLA, showed excellent F to RTP peak separation and an 0-100% oxygen sensitivity range unprecedented for metal-free RTP emitting materials. Due to the dual emission and unconventionally long RTP lifetimes of these O2 sensing materials, a portable, cost-effective camera was used to quantify oxygen levels via lifetime and red/green/blue (RGB) ratiometry. The hypersensitive H dye was well matched to lifetime detection, simultaneous lifetime and ratiometric imaging was possible for the bromide analogue, whereas the iodide material, with intense RTP emission and a shorter lifetime, was suited for RGB ratiometry. To demonstrate the prospects of this camera/material design combination for bioimaging, iodide boron dye-PLA nanoparticles were applied to a murine wound model to detect oxygen levels. Surprisingly, wound oxygen imaging was achieved without covering (i.e. without isolating from ambient conditions, air). Additionally, would healing was monitored via wound size reduction and associated oxygen recovery, from hypoxic to normoxic. These single-component materials provide a simple tunable platform for biological oxygen sensing that can be deployed to spatially resolve oxygen in a variety of environments.
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Affiliation(s)
- Christopher A. DeRosa
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Scott A. Seaman
- Department
of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Alexander S. Mathew
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Catherine M. Gorick
- Department
of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Ziyi Fan
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - James N. Demas
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Shayn M. Peirce
- Department
of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Cassandra L. Fraser
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
- Department
of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
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25
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Mathew AS, DeRosa CA, Demas JN, Fraser CL. Difluoroboron β-Diketonate Materials with Long-Lived Phosphorescence Enable Lifetime Based Oxygen Imaging with a Portable Cost Effective Camera. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2016; 8:3109-3114. [PMID: 27909462 PMCID: PMC5125782 DOI: 10.1039/c5ay02959g] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Lifetime-based oxygen imaging is useful in many biological applications but instrumentation can be stationary, expensive, and complex. Herein, we present a portable, cost effective, simple alternative with high spatiotemporal resolution that uses a complementary metal oxide silicon (CMOS) camera to measure oxygen sensitive lifetimes on the millisecond scale. We demonstrate its compatibility with difluoroboron β-diketonate poly(lactic acid) (BF2bdkPLA) polymers which are nontoxic and exhibit long-lived oxygen sensitive phosphorescence. Spatially resolved lifetimes of four BF2bdkPLA variants are measured using nonlinear least squares (NLS) and rapid lifetime determination (RLD) both of which are shown to be accurate and precise. Real-time imaging in a dynamic environment is demonstrated by determining lifetime pixel-wise. The setup costs less than $5000, easily fits into a backpack, and can operate on battery power alone. This versatility combined with the inherent utility of lifetime measurements make this system a useful tool for a wide variety of oxygen sensing applications. This study serves as an important foundation for the development of dual mode real time lifetime plus ratiometric imaging with bright, long lifetime difluoroboron β-diketonate probes.
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26
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Hypoxia-Sensitive Materials for Biomedical Applications. Ann Biomed Eng 2016; 44:1931-45. [DOI: 10.1007/s10439-016-1578-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Accepted: 02/23/2016] [Indexed: 10/22/2022]
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27
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Mosinger J, Lang K, Kubát P. Photoactivatable Nanostructured Surfaces for Biomedical Applications. Top Curr Chem (Cham) 2016; 370:135-68. [DOI: 10.1007/978-3-319-22942-3_5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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28
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Bowers DT, Botchwey EA, Brayman KL. Advances in Local Drug Release and Scaffolding Design to Enhance Cell Therapy for Diabetes. TISSUE ENGINEERING. PART B, REVIEWS 2015; 21:491-503. [PMID: 26192271 DOI: 10.1089/ten.teb.2015.0275] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Islet transplant is a curative treatment for insulin-dependent diabetes. However, challenges, including poor tissue survival and a lack of efficient engraftment, must be overcome. An encapsulating or scaffolding material can act as a vehicle for agents carefully chosen for the islet transplant application. From open porous scaffolds to spherical capsules and conformal coatings, greater immune protection is often accompanied by greater distances to microvasculature. Generating a local oxygen supply from the implant material or encouraging vessel growth through the release of local factors can create an oxygenated engraftment site. Intricately related to the vascularization response, inflammatory interaction with the cell supporting implant is a long-standing hurdle to material-based islet transplant. Modulation of the immune responses to the islets as well as the material itself must be considered. To match the post-transplant complexity, the release rate can be tuned to orchestrate temporal responses. Material degradation properties can be utilized in passive approaches or external stimuli and biological cues in active approaches. A combination of multiple carefully chosen factors delivered in an agent-specialized manner is considered by this review to improve the long-term function of islets transplanted in scaffolding and encapsulating materials.
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Affiliation(s)
- Daniel T Bowers
- 1 Department of Biomedical Engineering, University of Virginia , Charlottesville, Virginia
- 2 Department of Surgery, University of Virginia , Charlottesville, Virginia
| | - Edward A Botchwey
- 3 Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University , Atlanta, Georgia
| | - Kenneth L Brayman
- 1 Department of Biomedical Engineering, University of Virginia , Charlottesville, Virginia
- 2 Department of Surgery, University of Virginia , Charlottesville, Virginia
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29
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DeRosa CA, Kerr C, Fan Z, Kolpaczynska M, Mathew AS, Evans RE, Zhang G, Fraser CL. Tailoring Oxygen Sensitivity with Halide Substitution in Difluoroboron Dibenzoylmethane Polylactide Materials. ACS APPLIED MATERIALS & INTERFACES 2015; 7:23633-43. [PMID: 26480236 PMCID: PMC4626297 DOI: 10.1021/acsami.5b07126] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The dual-emissive properties of solid-state difluoroboron β-diketonate-poly(lactic acid) (BF2bdkPLA) materials have been utilized for biological oxygen sensing. In this work, BF2dbm(X)PLA materials were synthesized, where X = H, F, Cl, Br, and I. The effects of changing the halide substituent and PLA polymer chain length on the optical properties in dilute CH2Cl2 solutions and solid-state polymer films were studied. These luminescent materials show fluorescence, phosphorescence, and lifetime tunability on the basis of molecular weight, as well as lifetime modulation via the halide substituent. Short BF2dbm(Br)PLA (6.0 kDa) and both short and long BF2dbm(I)PLA polymers (6.0 or 20.3 kDa) have fluorescence and intense phosphorescence ideal for ratiometric oxygen sensing. The lighter halide-dye polymers with hydrogen, fluorine, and chlorine substitution have longer phosphorescence lifetimes and can be utilized as ultrasensitive oxygen sensors. Photostability was also analyzed for the polymer films.
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Affiliation(s)
| | - Caroline Kerr
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904
| | - Ziyi Fan
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904
| | - Milena Kolpaczynska
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904
| | - Alexander S. Mathew
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904
| | - Ruffin E. Evans
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904
| | - Guoqing Zhang
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904
| | - Cassandra L. Fraser
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904
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30
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DeRosa CA, Samonina-Kosicka J, Fan Z, Hendargo HC, Weitzel DH, Palmer GM, Fraser CL. Oxygen Sensing Difluoroboron Dinaphthoylmethane Polylactide. Macromolecules 2015; 48:2967-2977. [PMID: 26056421 PMCID: PMC4457464 DOI: 10.1021/acs.macromol.5b00394] [Citation(s) in RCA: 103] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Dual emissive luminescence properties of solid-state difluoroboron β-diketonate-poly(lactic acid) (BF2bdk-PLA) materials have been utilized as biological oxygen sensors. Dyes with red-shifted absorption and emission are important for multiplexing and in vivo imaging, thus hydroxyl-functionalized dinaphthoylmethane initiators and dye-PLA conjugates BF2dnm(X)PLA (X = H, Br, I) with extended conjugation were synthesized. The luminescent materials show red-shifted absorbance (~435 nm) and fluorescence tunability by molecular weight. Fluorescence colors range from yellow (~530 nm) in 10 - 12 kDa polymers to green (~490 nm) in 20 - 30 kDa polymers. Room-temperature phosphorescence (RTP) and thermally activated delayed fluorescence (TADF) are present under a nitrogen atmosphere. For the iodine-substituted derivative, BF2dnm(I)PLA, clearly distinguishable fluorescence (green) and phosphorescence (orange) peaks are present, making it ideal for ratiometric oxygen-sensing and imaging. Bromide and hydrogen analogues with weaker relative phosphorescence intensities and longer phosphorescence lifetimes can be used as highly sensitive, concentration independent, lifetime-based oxygen sensors or for gated emission detection. BF2dnm(I)PLA nanoparticles were taken up by T41 mouse mammary cells and successfully demonstrated differences in vitro ratiometric measurement of oxygen.
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Affiliation(s)
- Christopher A. DeRosa
- Department of Chemistry, University of Virginia, McCormick Road, Charlottesville, VA 22904
| | | | - Ziyi Fan
- Department of Chemistry, University of Virginia, McCormick Road, Charlottesville, VA 22904
| | - Hansford C. Hendargo
- Department of Radiation Oncology, Duke University Medical Center, Durham NC, 27710
| | - Douglas H. Weitzel
- Department of Radiation Oncology, Duke University Medical Center, Durham NC, 27710
| | - Gregory M. Palmer
- Department of Radiation Oncology, Duke University Medical Center, Durham NC, 27710
| | - Cassandra L. Fraser
- Department of Chemistry, University of Virginia, McCormick Road, Charlottesville, VA 22904
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