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Li H, Li M, Zhang S, Chen M, Wang J. Packaged europium/fluorescein-based hydrogen bond organic framework as ratiometric fluorescent probe for visual real-time monitoring of seafood freshness. Talanta 2024; 272:125809. [PMID: 38382300 DOI: 10.1016/j.talanta.2024.125809] [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: 01/02/2024] [Revised: 01/30/2024] [Accepted: 02/15/2024] [Indexed: 02/23/2024]
Abstract
The freshness of sea food has always been the focus of attention from consumers, and food-safety issues are in urgent need of efficient approaches. A HOF-based ratiometric fluorescence probe (HOF-FITC/Eu) featuring superior amine-response, offers the real-time and visual detection of seafood freshness. Via intermolecular hydrogen bond interaction to form hydrogen-bonded organic frameworks (HOFs), which serve as a structural basis for the conjugate loading of pH-sensitive fluorescein (5-FITC) and coordination doping of lanthanide Eu3+. Amine vapors stimulate the dual-wavelength (525 nm and 616 nm) characteristic fluorescence of HOF-FITC/Eu with an inverse trend, resulting in an increase of the ratio of I525 to I616 accompanied by a distinct color transition from red to green. Prepared HOF-FITC/Eu featuring sensitive red-green color change characteristics of amine response are readily dripped into composite films of filter paper through integrated smartphone and 254 nm UV lamp as mobile observation devices to on-site monitor the freshness of raw fish and shrimp samples. The intelligent food probe HOF-FITC/Eu opens a novel material assembly type for fluorescence sensing and a potential pathway for other functional materials in the field of investigational food.
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Affiliation(s)
- Haiyan Li
- Department of Chemistry, Research Center for Analytical Sciences, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China
| | - Min Li
- Department of Chemistry, Research Center for Analytical Sciences, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China
| | - Shangqing Zhang
- Department of Chemistry, Research Center for Analytical Sciences, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China
| | - Mingli Chen
- Department of Chemistry, Research Center for Analytical Sciences, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China.
| | - Jianhua Wang
- Department of Chemistry, Research Center for Analytical Sciences, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China.
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2
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Lin X, Qiu W, Bayer S, Nagl S. Optical pH Monitoring in Microdroplet Platforms for Live Cell Experiments Using Colloidal Surfactants. Methods Mol Biol 2023; 2689:39-51. [PMID: 37430045 DOI: 10.1007/978-1-0716-3323-6_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
Droplet microfluidic technology facilitates the development of high-throughput screening applications in nanoliter volumes. Surfactants provide stability for emulsified monodisperse droplets to carry out compartmentalization. Fluorinated silica-based nanoparticles are used; they can minimize crosstalk in microdroplets and provide further functionalities by surface labeling. Here we describe a protocol for monitoring pH changes in live single cells by fluorinated silica nanoparticles, for their synthesis, chip fabrication, and optical monitoring on the microscale. The nanoparticles are doped with ruthenium-tris-1,10-phenanthroline dichloride on the inside and conjugated with fluorescein isothiocyanate on the surface. This protocol may be used more generally to detect pH changes in microdroplets. The fluorinated silica nanoparticles can also be used as droplet stabilizers with an integrated luminescent sensor for other applications.
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Affiliation(s)
- Xuyan Lin
- Department of Chemistry, Hong Kong University of Science and Technology, Kowloon, Hong Kong, China
- Division of Life Sciences, Hong Kong University of Science and Technology, Kowloon, Hong Kong, China
| | - Wenting Qiu
- Department of Chemistry, Hong Kong University of Science and Technology, Kowloon, Hong Kong, China
| | - Steevanson Bayer
- Department of Chemistry, Hong Kong University of Science and Technology, Kowloon, Hong Kong, China
| | - Stefan Nagl
- Department of Chemistry, Hong Kong University of Science and Technology, Kowloon, Hong Kong, China.
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3
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Salaluk S, Jiang S, Viyanit E, Rohwerder M, Landfester K, Crespy D. Design of Nanostructured Protective Coatings with a Sensing Function. ACS APPLIED MATERIALS & INTERFACES 2021; 13:53046-53054. [PMID: 34705432 DOI: 10.1021/acsami.1c14110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Nanostructured multilayered coatings for metals are prepared to simultaneously provide a function of corrosion mitigation and of corrosion sensing for copper substrates. Silica nanocapsules, embedded in one layer of the coating, are used as a host for a corrosion inhibitor and as a sensor, which detect changes of pH value and release inhibitors via an optical signal. Furthermore, another layer in the coating exists in a nanonetwork loaded with another corrosion inhibitor, which is impregnated with a hydrophobic polymer. We demonstrate that a specific arrangement of layers leads to an optimum anticorrosion and sensing performance while the sensing signal can be prolonged for a long time. It is the first time that the fluorophore detecting corrosion is conjugated to the nanosensor and that nanofibers and nanocapsules are used simultaneously to load and release corrosion inhibitors for anticorrosion applications.
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Affiliation(s)
- Suttiruk Salaluk
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
- Max Planck-VISTEC Partner Laboratory for Sustainable Materials, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
| | - Shuai Jiang
- Max Planck-VISTEC Partner Laboratory for Sustainable Materials, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz 55128, Germany
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Ekkarut Viyanit
- Failure Analysis and Corrosion Technology Laboratory, National Metal and Materials Technology Center, Klong Luang, Pathumthani 12120, Thailand
| | - Michael Rohwerder
- Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Strasse 1, Düsseldorf 40237, Germany
| | - Katharina Landfester
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz 55128, Germany
| | - Daniel Crespy
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
- Max Planck-VISTEC Partner Laboratory for Sustainable Materials, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
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4
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Wang J, Li D, Ye Y, Qiu Y, Liu J, Huang L, Liang B, Chen B. A Fluorescent Metal-Organic Framework for Food Real-Time Visual Monitoring. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2008020. [PMID: 33690942 DOI: 10.1002/adma.202008020] [Citation(s) in RCA: 104] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 02/03/2021] [Indexed: 05/20/2023]
Abstract
Due to increasing food-safety issues, exploiting efficient approaches for food quality assessment and instrumentation has attracted concerns worldwide. Herein, a smart evaluation system based on a fluorescent metal-organic framework (MOF) is developed for real-time visual monitoring of food freshness. Via post-synthetic modification, a ratiometric fluorescent MOF probe is constructed by covalently coupling fluorescein 5-isothiocyanate (5-FITC) with NH2 -rich lanthanide MOF. The probes exhibit a dual-emissive-responsive to biogenic amine, resulting in an increase in FITC emission along with a decrease in Eu3+ emission accompanied by a clear distinguishable color transition from orange red to green. After doping the probes on a flexible substrate, the obtained MOF composite film can be integrated with a smartphone-based portable platform easily. It is proved that this smart evaluation system can be used for on-site inspection of the freshness of raw fish samples. This work develops a fluorescent MOF-based smart evaluation system as a novel platform for application in food monitoring, which not only has enormous economic value but also holds great public health significance.
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Affiliation(s)
- Jing Wang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Daquan Li
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Yingxiang Ye
- Department of Chemistry, University of North Texas, Denton, TX, 76201, USA
| | - Yu Qiu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Jiawei Liu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Liang Huang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Bin Liang
- Department of Chemistry, University of Texas at San Antonio, San Antonio, TX, 78249, USA
| | - Banglin Chen
- Department of Chemistry, University of Texas at San Antonio, San Antonio, TX, 78249, USA
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5
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Transdermal electroosmotic flow generated by a porous microneedle array patch. Nat Commun 2021; 12:658. [PMID: 33510169 PMCID: PMC7843990 DOI: 10.1038/s41467-021-20948-4] [Citation(s) in RCA: 104] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 12/22/2020] [Indexed: 01/22/2023] Open
Abstract
A microneedle array is an attractive option for a minimally invasive means to break through the skin barrier for efficient transdermal drug delivery. Here, we report the applications of solid polymer-based ion-conductive porous microneedles (PMN) containing interconnected micropores for improving iontophoresis, which is a technique of enhancing transdermal molecular transport by a direct current through the skin. The PMN modified with a charged hydrogel brings three innovative advantages in iontophoresis at once: (1) lowering the transdermal resistance by low-invasive puncture of the highly resistive stratum corneum, (2) transporting of larger molecules through the interconnected micropores, and (3) generating electroosmotic flow (EOF). In particular, the PMN-generated EOF greatly enhances the transdermal molecular penetration or extraction, similarly to the flow induced by external pressure. The enhanced efficiencies of the EOF-assisted delivery of a model drug (dextran) and of the extraction of glucose are demonstrated using a pig skin sample. Furthermore, the powering of the PMN-based transdermal EOF system by a built-in enzymatic biobattery (fructose / O2 battery) is also demonstrated as a possible totally organic iontophoresis patch.
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6
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Steinegger A, Wolfbeis OS, Borisov SM. Optical Sensing and Imaging of pH Values: Spectroscopies, Materials, and Applications. Chem Rev 2020; 120:12357-12489. [PMID: 33147405 PMCID: PMC7705895 DOI: 10.1021/acs.chemrev.0c00451] [Citation(s) in RCA: 182] [Impact Index Per Article: 45.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Indexed: 12/13/2022]
Abstract
This is the first comprehensive review on methods and materials for use in optical sensing of pH values and on applications of such sensors. The Review starts with an introduction that contains subsections on the definition of the pH value, a brief look back on optical methods for sensing of pH, on the effects of ionic strength on pH values and pKa values, on the selectivity, sensitivity, precision, dynamic ranges, and temperature dependence of such sensors. Commonly used optical sensing schemes are covered in a next main chapter, with subsections on methods based on absorptiometry, reflectometry, luminescence, refractive index, surface plasmon resonance, photonic crystals, turbidity, mechanical displacement, interferometry, and solvatochromism. This is followed by sections on absorptiometric and luminescent molecular probes for use pH in sensors. Further large sections cover polymeric hosts and supports, and methods for immobilization of indicator dyes. Further and more specific sections summarize the state of the art in materials with dual functionality (indicator and host), nanomaterials, sensors based on upconversion and 2-photon absorption, multiparameter sensors, imaging, and sensors for extreme pH values. A chapter on the many sensing formats has subsections on planar, fiber optic, evanescent wave, refractive index, surface plasmon resonance and holography based sensor designs, and on distributed sensing. Another section summarizes selected applications in areas, such as medicine, biology, oceanography, bioprocess monitoring, corrosion studies, on the use of pH sensors as transducers in biosensors and chemical sensors, and their integration into flow-injection analyzers, microfluidic devices, and lab-on-a-chip systems. An extra section is devoted to current challenges, with subsections on challenges of general nature and those of specific nature. A concluding section gives an outlook on potential future trends and perspectives.
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Affiliation(s)
- Andreas Steinegger
- Institute
of Analytical Chemistry and Food Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Otto S. Wolfbeis
- Institute
of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, D-93040 Regensburg, Germany
| | - Sergey M. Borisov
- Institute
of Analytical Chemistry and Food Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
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7
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Kim KS, Suzuki K, Cho H, Bae YH. Selected Factors Affecting Oral Bioavailability of Nanoparticles Surface-Conjugated with Glycocholic Acid via Intestinal Lymphatic Pathway. Mol Pharm 2020; 17:4346-4353. [PMID: 33064945 DOI: 10.1021/acs.molpharmaceut.0c00764] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Here, we describe the absorption pathways of nanoparticles whose surface is modified with bile acid and present environmental factors that influence oral bioavailability (BA) from the gastrointestinal tract (GIT). The approach utilized 100 nm sized fluorescence-labeled, carboxylated polystyrene nanoparticles (CPN) conjugated with glycocholic acid (G/CPN) to exclude potential artifacts, if existing, and instability issues in evaluating the transit of G/CPN in the GIT and measuring BA. The in vitro study using SK-BR-3 that expresses the apical sodium bile acid transporter showed that once G/CPN is internalized, it stayed 2.9 times longer in the cells than CPN, indirectly suggesting that G/CPN takes intracellular trafficking pathways different from CPN in SK-BR-3 cells. In a Caco-2 cell monolayer, G/CPN passed through the monolayer without damaging the tight junction. G/CPN, when administered orally in rodents, showed sustained transit time in the GIT for at least 4 h and was absorbed into the intestinal lymphatic system and circulated into the blood. Ingestion of food before and after oral administration delays G/CPN absorption and decreases BA. A decrease in gastrointestinal motility by anesthetic condition increased the relative BA of G/CPN by up to 74%. Thus, the oral BA of G/CPN can be optimized by taking food ingestion and gastrointestinal motility into account.
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Affiliation(s)
- Kyoung Sub Kim
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Kenichi Suzuki
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, Utah 84112, United States.,Fuji Research Laboratories, Pharmaceutical Division, Kowa Company Limited, 332-1 Ohnoshinden, Fuji, Shizuoka 417-8650, Japan
| | - Hana Cho
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - You Han Bae
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
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8
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Tummala S, Huang W, Wu B, Chang K, Ho Y. Fluorescent Mesoporous Nanoparticles for β-Lactamase Screening Assays. ChemistryOpen 2020; 9:1074-1081. [PMID: 33117628 PMCID: PMC7582675 DOI: 10.1002/open.202000221] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/17/2020] [Indexed: 11/10/2022] Open
Abstract
We present a sensitive and rapid screening method for the determination of β-lactamase activity of antibiotic-resistant bacteria, by designing a pH-sensitive fluorescent dye-doped mesoporous silica nanoparticle encapsulated with penicillin G as a substrate. When penicillin G was hydrolysed by β-lactamase and converted into penicilloic acid, the acidic environment resulted in fluorescence quenching of the dye. The dye-doped mesoporous nanoparticles not only enhanced the β-lactamase-catalyzed reaction rate but also stablized the substrate, penicillin G, which degrades into penicilloic acid in a water solution without β-lactamase. Twentyfive clinical bacterial samples were tested and the antibiotic resistant and susceptible strains were identified. The proposed method may detect the presence of β -lactamases of clinically relevant samples in less than 1 hour. Moreover, the detection limit of β-lactamase activity was as low as 7.8×10-4 U/mL, which was determined within two hours.
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Affiliation(s)
- Srikrishna Tummala
- Department of ChemistryNational Dong Hwa UniversityHualien974TaiwanRepublic of China
| | - Wei‐An Huang
- Department of ChemistryNational Dong Hwa UniversityHualien974TaiwanRepublic of China
| | - Bo‐Hong Wu
- Department of ChemistryNational Dong Hwa UniversityHualien974TaiwanRepublic of China
| | - Kai‐Chih Chang
- Department of Laboratory Medicine and BiotechnologyTzu Chi UniversityHualien970TaiwanRepublic of China
| | - Yen‐Peng Ho
- Department of ChemistryNational Dong Hwa UniversityHualien974TaiwanRepublic of China
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9
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Duong HD, Shin Y, Rhee JI. Development of fluorescent pH sensors based on a sol-gel matrix for acidic and neutral pH ranges in a microtiter plate. Microchem J 2019. [DOI: 10.1016/j.microc.2019.03.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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Shamsipur M, Barati A, Nematifar Z. Fluorescent pH nanosensors: Design strategies and applications. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2019. [DOI: 10.1016/j.jphotochemrev.2019.03.001] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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11
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Wang J, Li Y, Duan J, Yang M, Yu Y, Feng L, Yang X, Zhou X, Zhao Z, Sun Z. Silica nanoparticles induce autophagosome accumulation via activation of the EIF2AK3 and ATF6 UPR pathways in hepatocytes. Autophagy 2018; 14:1185-1200. [PMID: 29940794 DOI: 10.1080/15548627.2018.1458174] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Abstract
Autophagy dysfunction is a potential toxic effect of nanoparticles. Previous studies have indicated that silica nanoparticles (SiNPs) induce macroautophagy/autophagy dysfunction, while the precise mechanisms remain uncertain. Hence, the present study investigated the molecular mechanisms by which SiNPs enhanced autophagosome synthesis, which then contributed to autophagy dysfunction. First, the effects of SiNPs on autophagy and autophagic flux were verified using transmission electron microscopy, laser scanning confocal microscopy, and western blot assays. Then, the activation of endoplasmic reticular (ER) stress was validated to be through the EIF2AK3 and ATF6 UPR pathways but not the ERN1-XBP1 pathway, along with the upregulation of downstream ATF4 and DDIT3. Thereafter, the ER stress inhibitor 4-phenylbutyrate (4-PBA) was used to verify that SiNP-induced autophagy could be influenced by ER stress. Furthermore, specialized lentiviral shRNA were employed to determine that autophagy was induced via specific activation of the EIF2AK3 and ATF6 UPR pathways. Finally, the 2 autophagic genes LC3B and ATG12 were found to be transcriptionally upregulated by downstream ATF4 and DDIT3 in ER stress, which contributed to the SiNP-enhanced autophagosome synthesis. Taken together, these data suggest that SiNPs induced autophagosome accumulation via the activation of the EIF2AK3 and ATF6 UPR pathways in hepatocytes, which offers a new insight into detailed molecular mechanisms underlying SiNP-induced autophagy dysfunction, and specifically how UPR pathways regulate key autophagic genes. This work provides novel evidence for the study of toxic effects and risk assessment of SiNPs.
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Affiliation(s)
- Ji Wang
- a Department of Toxicology and Sanitary Chemistry , School of Public Health, Capital Medical University , Beijing , P.R. China.,b Beijing Key Laboratory of Environmental Toxicology , Capital Medical University , Beijing , P.R. China
| | - Yang Li
- a Department of Toxicology and Sanitary Chemistry , School of Public Health, Capital Medical University , Beijing , P.R. China.,b Beijing Key Laboratory of Environmental Toxicology , Capital Medical University , Beijing , P.R. China
| | - Junchao Duan
- a Department of Toxicology and Sanitary Chemistry , School of Public Health, Capital Medical University , Beijing , P.R. China.,b Beijing Key Laboratory of Environmental Toxicology , Capital Medical University , Beijing , P.R. China
| | - Man Yang
- a Department of Toxicology and Sanitary Chemistry , School of Public Health, Capital Medical University , Beijing , P.R. China.,b Beijing Key Laboratory of Environmental Toxicology , Capital Medical University , Beijing , P.R. China
| | - Yang Yu
- a Department of Toxicology and Sanitary Chemistry , School of Public Health, Capital Medical University , Beijing , P.R. China.,b Beijing Key Laboratory of Environmental Toxicology , Capital Medical University , Beijing , P.R. China
| | - Lin Feng
- a Department of Toxicology and Sanitary Chemistry , School of Public Health, Capital Medical University , Beijing , P.R. China.,b Beijing Key Laboratory of Environmental Toxicology , Capital Medical University , Beijing , P.R. China
| | - Xiaozhe Yang
- a Department of Toxicology and Sanitary Chemistry , School of Public Health, Capital Medical University , Beijing , P.R. China.,b Beijing Key Laboratory of Environmental Toxicology , Capital Medical University , Beijing , P.R. China
| | - Xianqing Zhou
- a Department of Toxicology and Sanitary Chemistry , School of Public Health, Capital Medical University , Beijing , P.R. China.,b Beijing Key Laboratory of Environmental Toxicology , Capital Medical University , Beijing , P.R. China
| | - Zhendong Zhao
- c MOH Key Laboratory of Systems Biology of Pathogens , Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College , Beijing , China
| | - Zhiwei Sun
- a Department of Toxicology and Sanitary Chemistry , School of Public Health, Capital Medical University , Beijing , P.R. China.,b Beijing Key Laboratory of Environmental Toxicology , Capital Medical University , Beijing , P.R. China
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12
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Maximov AL, Zolotukhina AV, Mamedli AA, Kulikov LA, Karakhanov EA. Selective Levulinic Acid Hydrogenation in the Presence of Hybrid Dendrimer-Based Catalysts. Part I: Monometallic. ChemCatChem 2017. [DOI: 10.1002/cctc.201700691] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Anton L. Maximov
- Department of Petroleum Chemistry and Organic Catalysis; Moscow State University; 119991 Moscow Russian Federation
- A.V. Topchiev Institute of Petrochemical Synthesis RAS; 119991 Moscow Russian Federation
| | - Anna V. Zolotukhina
- Department of Petroleum Chemistry and Organic Catalysis; Moscow State University; 119991 Moscow Russian Federation
| | - Adila A. Mamedli
- Department of Petroleum Chemistry and Organic Catalysis; Moscow State University; 119991 Moscow Russian Federation
| | - Leonid A. Kulikov
- Department of Petroleum Chemistry and Organic Catalysis; Moscow State University; 119991 Moscow Russian Federation
| | - Edward A. Karakhanov
- Department of Petroleum Chemistry and Organic Catalysis; Moscow State University; 119991 Moscow Russian Federation
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13
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Vera ML, Cánneva A, Huck-Iriart C, Requejo FG, Gonzalez MC, Dell'Arciprete ML, Calvo A. Fluorescent silica nanoparticles with chemically reactive surface: Controlling spatial distribution in one-step synthesis. J Colloid Interface Sci 2017; 496:456-464. [DOI: 10.1016/j.jcis.2017.02.040] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 02/14/2017] [Accepted: 02/15/2017] [Indexed: 10/20/2022]
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14
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Huntosova V, Gerelli E, Horvath D, Wagnieres G. Measurement of pO 2 by luminescence lifetime spectroscopy: A comparative study of the phototoxicity and sensitivity of [Ru(Phen) 3 ] 2+ and PdTCPP in vivo. JOURNAL OF BIOPHOTONICS 2017; 10:708-717. [PMID: 27588712 DOI: 10.1002/jbio.201600127] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 07/21/2016] [Accepted: 08/14/2016] [Indexed: 05/26/2023]
Abstract
Dysfunctions in tissue metabolism can be detected at early stages by oxygen partial pressure (pO2 ) measurement. The measurement of emission lifetimes offers very promising and non-invasive approach to estimate pO2 in vivo. This study compares two extensively used oxygen sensors and assesses their in vivo oxygen sensitivity and phototoxic effect. Luminescence lifetime of Ru-polypyridyl complex and of Pd-porphyrin is measured in the Chick's Chorioallantoic Membrane (CAM) model with a dedicated optical fiber-based, time-resolved spectrometer. The Pd-porphyrin luminescence lifetimes measured in the CAM model exposed to different pO2 levels are longer and have a broader dynamic range (10-100 μs) than those of Ru-polypyridyl complex (0.6-1 μs). The combined statistical analysis based on an estimate of the kurtosis and skewness, bootstrapping method and routine normality tests is performed. The indicators of the averages and signal to noise ratio stability are also calculated. The combination of several data processing allows selection of the better sensor for a given application. In particular, it is found that the advantage of Ru-polypyridyl complex over Pd-porphyrin is two-fold: i) Ru-polypyridyl complex datasets have consistently better statistical characteristics, ii) Ru-polypyridyl exhibits lower cytotoxicity.
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Affiliation(s)
- Veronika Huntosova
- Center for Interdisciplinary Biosciences, Faculty of Sciences at Pavol Jozef Safarik University, Jesenna 5, 04154, Kosice, Slovakia
- Laboratory of Organometallic and Medicinal Chemistry, Swiss Federal Institute of Technology (EPFL), Institute of Chemical Sciences and Engineering, Station 6, Lausanne, CH-1015, Switzerland
| | - Emmanuel Gerelli
- Laboratory of Organometallic and Medicinal Chemistry, Swiss Federal Institute of Technology (EPFL), Institute of Chemical Sciences and Engineering, Station 6, Lausanne, CH-1015, Switzerland
| | - Denis Horvath
- Center for Interdisciplinary Biosciences, Faculty of Sciences at Pavol Jozef Safarik University, Jesenna 5, 04154, Kosice, Slovakia
| | - Georges Wagnieres
- Laboratory of Organometallic and Medicinal Chemistry, Swiss Federal Institute of Technology (EPFL), Institute of Chemical Sciences and Engineering, Station 6, Lausanne, CH-1015, Switzerland
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15
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Dendrimer-Stabilized Ru Nanoparticles Immobilized in Organo-Silica Materials for Hydrogenation of Phenols. Catalysts 2017. [DOI: 10.3390/catal7030086] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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16
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Wang Z, Nie J, Qin W, Hu Q, Tang BZ. Gelation process visualized by aggregation-induced emission fluorogens. Nat Commun 2016; 7:12033. [PMID: 27337500 PMCID: PMC4931011 DOI: 10.1038/ncomms12033] [Citation(s) in RCA: 155] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 05/24/2016] [Indexed: 12/22/2022] Open
Abstract
Alkaline-urea aqueous solvent system provides a novel and important approach for the utilization of polysaccharide. As one of the most important polysaccharide, chitosan can be well dissolved in this solvent system, and the resultant hydrogel material possesses unique and excellent properties. Thus the sound understanding of the gelation process is fundamentally important. However, current study of the gelation process is still limited due to the absence of direct observation and the lack of attention on the entire process. Here we show the entire gelation process of chitosan LiOH-urea aqueous system by aggregation-induced emission fluorescent imaging. Accompanied by other pseudo in situ investigations, we propose the mechanism of gelation process, focusing on the formation of junction points including hydrogen bonds and crystalline.
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Affiliation(s)
- Zhengke Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
- Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province, Hangzhou 310027, China
| | - Jingyi Nie
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
- Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province, Hangzhou 310027, China
| | - Wei Qin
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong 999077, China
| | - Qiaoling Hu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
- Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province, Hangzhou 310027, China
| | - Ben Zhong Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong 999077, China
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17
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Thermo-responsive Ruthenium Dendrimer-based Catalysts for Hydrogenation of the Aromatic Compounds and Phenols. J Inorg Organomet Polym Mater 2016. [DOI: 10.1007/s10904-016-0399-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Micro- and nanostructured sol-gel-based materials for optical chemical sensing (2005–2015). Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-1863-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Ekkelenkamp AE, Jansman MM, Roelofs K, Engbersen JF, Paulusse JM. Surfactant-free preparation of highly stable zwitterionic poly(amido amine) nanogels with minimal cytotoxicity. Acta Biomater 2016; 30:126-134. [PMID: 26518103 DOI: 10.1016/j.actbio.2015.10.037] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 10/19/2015] [Accepted: 10/23/2015] [Indexed: 01/14/2023]
Abstract
Narrowly dispersed zwitterionic poly(amido amine) (PAA) nanogels with a diameter of approximately 100nm were prepared by a high-yielding and surfactant-free, inverse nanoprecipitation of PAA polymers. The resulting, negatively charged, nanogels (PAA-NG1) were functionalized with N,N-dimethylethylenediamine via EDC/NHS coupling chemistry. This resulted in nanogels with a positive surface charge (PAA-NG2). Both types of nanogels were fluorescently labelled via isothiocyanate coupling. PAA-NG1 displays high colloidal stability both in PBS and Fetal Bovine Serum solution. Moreover, both nanogels exhibit a distinct zwitterionic swelling profile in response to pH changes. Cellular uptake of FITC-labelled nanogels with RAW 264.7, PC-3 and COS-7 cells was evaluated by fluorescence microscopy. These studies showed that nanogel surface charge greatly influences nanogel-cell interactions. The PAA polymer and PAA-NG1 showed minimal cell toxicity as was evaluated by MTT assays. The findings reported here demonstrate that PAA nanogels possess interesting properties for future studies in both drug delivery and imaging. STATEMENT OF SIGNIFICANCE The use of polymeric nanoparticles in biomedical applications such as drug delivery and imaging, shows great potential for medical applications. However, these nanoparticles are often not stable in biological environments. Zwitterionic polymers have shown excellent biocompatibility, but these materials are not easily degradable in biological environments. With the aim of developing a nanoparticle for drug delivery and imaging we synthesized a biomimetic and readily biodegradable zwitterionic polymer, which was incorporated into nanogels. These nanogels showed excellent stability in the presence of serum and minimal cytotoxicity, which was tested in three cell lines. Because of their negative surface charge and excellent serum stability, these nanogels are therefore promising carriers for drug delivery and molecular imaging.
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20
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Stable Poly(methacrylic acid) Brush Decorated Silica Nano-Particles by ARGET ATRP for Bioconjugation. Polymers (Basel) 2015. [DOI: 10.3390/polym7081427] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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21
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Yu Y, Duan J, Geng W, Li Q, Jiang L, Li Y, Yu Y, Sun Z. Aberrant cytokinesis and cell fusion result in multinucleation in HepG2 cells exposed to silica nanoparticles. Chem Res Toxicol 2015; 28:490-500. [PMID: 25625797 DOI: 10.1021/tx500473h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The multinucleation effect of silica nanoparticles (SiNPs) had been determined in our previous studies, but the relative mechanisms of multinucleation and how the multinucleated cells are generated were still not clear. This extensional study was conducted to investigate the mechanisms underlying the formation of multinucleated cells after SiNPs exposure. We first investigated cellular multinucleation, then performed time-lapse confocal imaging to certify whether the multinucleated cells resulted from cell fusion or abnormal cell division. Our results confirmed for the first time that there are three patterns contributing to the SiNPs-induced multinucleation in HepG2 cells: cell fusion, karyokinesis without cytokinesis, and cytokinesis followed by fusion. The chromosomal passenger complex (CPC) deficiency and cell cycle arrest in G1/S and G2/M checkpoints may be responsible for the cell aberrant cytokinesis. The activated MAPK/ERK1/2 signaling and decreased mitosis related proteins might be the underlying mechanism of cell cycle arrest and thus multinucleation. In summary, we confirmed the hypothesis that aberrant cytokinesis and cell fusion resulted in multinucleation in HepG2 cells after SiNPs exposure. Since cell fusion and multinucleation were involved in genetic instability and tumor development, this study suggests the potential ability of SiNPs to induce cellular genetic instability. These findings raise concerns with regard to human health hazards and environmental risks with SiNPs exposure.
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Affiliation(s)
- Yongbo Yu
- School of Public Health, Capital Medical University , Beijing 100069, P.R. China
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22
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Maximov A, Zolotukhina A, Murzin V, Karakhanov E, Rosenberg E. Ruthenium Nanoparticles Stabilized in Cross-Linked Dendrimer Matrices: Hydrogenation of Phenols in Aqueous Media. ChemCatChem 2015. [DOI: 10.1002/cctc.201403054] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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23
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Duan J, Yu Y, Yu Y, Li Y, Wang J, Geng W, Jiang L, Li Q, Zhou X, Sun Z. Silica nanoparticles induce autophagy and endothelial dysfunction via the PI3K/Akt/mTOR signaling pathway. Int J Nanomedicine 2014; 9:5131-41. [PMID: 25395850 PMCID: PMC4227623 DOI: 10.2147/ijn.s71074] [Citation(s) in RCA: 120] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Although nanoparticles have a great potential for biomedical applications, there is still a lack of a correlative safety evaluation on the cardiovascular system. This study is aimed to clarify the biological behavior and influence of silica nanoparticles (Nano-SiO2) on endothelial cell function. The results showed that the Nano-SiO2 were internalized into endothelial cells in a dose-dependent manner. Monodansylcadaverine staining, autophagic ultrastructural observation, and LC3-I/LC3-II conversion were employed to verify autophagy activation induced by Nano-SiO2, and the whole autophagic process was also observed in endothelial cells. In addition, the level of nitric oxide (NO), the activities of NO synthase (NOS) and endothelial (e)NOS were significantly decreased in a dose-dependent way, while the activity of inducible (i)NOS was markedly increased. The expression of C-reactive protein, as well as the production of proinflammatory cytokines (tumor necrosis factor α, interleukin [IL]-1β, and IL-6) were significantly elevated. Moreover, Nano-SiO2 had an inhibitory effect on the phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt)/mammalian target of rapamycin (mTOR) signaling pathway. Our findings demonstrated that Nano-SiO2 could disturb the NO/NOS system, induce inflammatory response, activate autophagy, and eventually lead to endothelial dysfunction via the PI3K/Akt/mTOR pathway. This indicates that exposure to Nano-SiO2 is a potential risk factor for cardiovascular diseases.
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Affiliation(s)
- Junchao Duan
- School of Public Health, Capital Medical University, Beijing, People's Republic of China ; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, People's Republic of China
| | - Yongbo Yu
- School of Public Health, Capital Medical University, Beijing, People's Republic of China ; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, People's Republic of China
| | - Yang Yu
- School of Public Health, Capital Medical University, Beijing, People's Republic of China ; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, People's Republic of China
| | - Yang Li
- School of Public Health, Capital Medical University, Beijing, People's Republic of China ; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, People's Republic of China
| | - Ji Wang
- School of Public Health, Capital Medical University, Beijing, People's Republic of China ; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, People's Republic of China
| | - Weijia Geng
- School of Public Health, Capital Medical University, Beijing, People's Republic of China ; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, People's Republic of China
| | - Lizhen Jiang
- School of Public Health, Capital Medical University, Beijing, People's Republic of China ; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, People's Republic of China
| | - Qiuling Li
- School of Public Health, Capital Medical University, Beijing, People's Republic of China ; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, People's Republic of China
| | - Xianqing Zhou
- School of Public Health, Capital Medical University, Beijing, People's Republic of China ; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, People's Republic of China
| | - Zhiwei Sun
- School of Public Health, Capital Medical University, Beijing, People's Republic of China ; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, People's Republic of China
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24
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Ghezzi M, Thickett SC, Telford AM, Easton CD, Meagher L, Neto C. Protein micropatterns by PEG grafting on Dewetted PLGA films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:11714-11722. [PMID: 25195610 DOI: 10.1021/la5018592] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The ability to control protein and cell positioning on a microscopic scale is crucial in many biomedical applications, such as single cell studies. We have developed and investigated the grafting of poly(ethylene glycol) (PEG) brushes onto poly(d,l-lactide-co-glycolide) (PLGA) thin films, which can be micropatterned by exploiting their spontaneous dewetting on top of polystyrene (PS) films. Dense PEG brushes with excellent protein repellence were achieved on PLGA by using cloud point grafting conditions, and selective adsorption of proteins on the micropatterned substrates was achieved by exploiting the different affinity protein adsorption onto the PEG brushes and the PS holes. PEG-grafted PLGA films showed better resistance against spontaneous degradation in buffer than bare PLGA films, due to passivation by the thin PEG coating. The simplicity of dewetting and subsequent grafting approaches, coupled with the ability to coat and pattern nonplanar substrates give rise to possible applications of PEG-grafted PLGA films in single cell studies and cell cultures for tissue engineering.
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Affiliation(s)
- Manuel Ghezzi
- School of Chemistry, The University of Sydney , Sydney, NSW 2006, Australia
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25
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Duan J, Yu Y, Yu Y, Li Y, Huang P, Zhou X, Peng S, Sun Z. Silica nanoparticles enhance autophagic activity, disturb endothelial cell homeostasis and impair angiogenesis. Part Fibre Toxicol 2014; 11:50. [PMID: 25266717 PMCID: PMC4193984 DOI: 10.1186/s12989-014-0050-8] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 09/02/2014] [Indexed: 11/30/2022] Open
Abstract
Background Given that the effects of ultrafine fractions (<0.1 μm) on ischemic heart diseases (IHD) and other cardiovascular diseases are gaining attention, this study is aimed to explore the influence of silica nanoparticles (SiNPs)-induced autophagy on endothelial cell homeostasis and angiogenesis. Methods and results Ultrastructural changes of autophagy were observed in both vascular endothelial cells and pericytes in the heart of ICR mice by TEM. Autophagic activity and impaired angiogenesis were further confirmed by the immunohistochemistry staining of LC3 and VEGFR2. In addition, the immunohistochemistry results showed that SiNPs had an inhibitory effect on ICAM-1 and VCAM-1, but no obvious effect on E-selectin in vivo. The disruption of F-actin cytoskeleton occurred as an initial event in SiNPs-treated endothelial cells. The depolarized mitochondria, autophagic vacuole accumulation, LC3-I/LC3-II conversion, and the down-regulation of cellular adhesion molecule expression were all involved in the disruption of endothelial cell homeostasis in vitro. Western blot analysis indicated that the VEGFR2/PI3K/Akt/mTOR and VEGFR2/MAPK/Erk1/2/mTOR signaling pathway was involved in the cardiovascular toxicity triggered by SiNPs. Moreover, there was a crosstalk between the VEGFR2-mediated autophagy signaling and angiogenesis signaling pathways. Conclusions In summary, the results demonstrate that SiNPs induce autophagic activity in endothelial cells and pericytes, subsequently disturb the endothelial cell homeostasis and impair angiogenesis. The VEGFR2-mediated autophagy pathway may play a critical role in maintaining endothelium and vascular homeostasis. Our findings may provide experimental evidence and explanation for cardiovascular diseases triggered by nano-sized particles. Electronic supplementary material The online version of this article (doi:10.1186/s12989-014-0050-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | | | | | | | | | | | | | - Zhiwei Sun
- School of Public Health, Capital Medical University, Beijing 100069, P,R, China.
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26
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Yu Y, Duan J, Yu Y, Li Y, Liu X, Zhou X, Ho KF, Tian L, Sun Z. Silica nanoparticles induce autophagy and autophagic cell death in HepG2 cells triggered by reactive oxygen species. JOURNAL OF HAZARDOUS MATERIALS 2014; 270:176-86. [PMID: 24583672 DOI: 10.1016/j.jhazmat.2014.01.028] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 12/22/2013] [Accepted: 01/07/2014] [Indexed: 05/24/2023]
Abstract
Silica nanoparticles (SNPs) are becoming favorable carriers for drug delivery or gene therapy, and in turn, the toxic effect of SNPs on biological systems is gaining attention. Currently, autophagy is recognized as an emerging toxicity mechanism triggered by nanomaterials, yet there have been scarcely research about the mechanisms of autophagy and autophagic cell death associated with SNPs. In this study, we verified the activation of SNPs-induced autophagy via the MDC-staining and LC3-I/LC3-II conversion, resulted in a dose-dependent manner. The typically morphological characteristics (autophagosomes and autolysosomes) of the autophagy process were observed in TEM ultrastructural analysis. In addition, the autophagic cell death was evaluated by cellular co-staining assay. And the underlying mechanisms of autophagy and autophagic cell death were performed using the intracellular ROS detection, autophagy inhibitor and ROS scavenger. Results showed that the elevated ROS level was in line with the increasing of autophagy activation, while both the 3-MA and NAC inhibitors effectively suppressed the autophagy and cell death induced by SNPs. In summary, our findings demonstrated that the SNPs-induced autophagy and autophagic cell death were triggered by the ROS generation in HepG2 cells, suggesting that exposure to SNPs could be a potential hazardous factor for maintaining cellular homeostasis.
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Affiliation(s)
- Yongbo Yu
- School of Public Health, Capital Medical University, Beijing, 100069, P.R. China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, P.R. China
| | - Junchao Duan
- School of Public Health, Capital Medical University, Beijing, 100069, P.R. China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, P.R. China
| | - Yang Yu
- School of Public Health, Capital Medical University, Beijing, 100069, P.R. China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, P.R. China
| | - Yang Li
- School of Public Health, Capital Medical University, Beijing, 100069, P.R. China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, P.R. China
| | - Xiaomei Liu
- School of Public Health, Jilin University, Changchun, Jilin, 130021, P.R. China
| | - Xianqing Zhou
- School of Public Health, Capital Medical University, Beijing, 100069, P.R. China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, P.R. China
| | - Kin-Fai Ho
- School of Public Health and Primary Care, Chinese University of Hong Kong, Hong Kong, China
| | - Linwei Tian
- School of Public Health and Primary Care, Chinese University of Hong Kong, Hong Kong, China.
| | - Zhiwei Sun
- School of Public Health, Capital Medical University, Beijing, 100069, P.R. China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, P.R. China.
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27
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Polymeric nanoparticles for optical sensing. Biotechnol Adv 2013; 31:1585-99. [DOI: 10.1016/j.biotechadv.2013.08.010] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Revised: 08/05/2013] [Accepted: 08/12/2013] [Indexed: 12/15/2022]
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28
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Toxic effect of silica nanoparticles on endothelial cells through DNA damage response via Chk1-dependent G2/M checkpoint. PLoS One 2013; 8:e62087. [PMID: 23620807 PMCID: PMC3631220 DOI: 10.1371/journal.pone.0062087] [Citation(s) in RCA: 147] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Accepted: 03/17/2013] [Indexed: 11/19/2022] Open
Abstract
Silica nanoparticles have become promising carriers for drug delivery or gene therapy. Endothelial cells could be directly exposed to silica nanoparticles by intravenous administration. However, the underlying toxic effect mechanisms of silica nanoparticles on endothelial cells are still poorly understood. In order to clarify the cytotoxicity of endothelial cells induced by silica nanoparticles and its mechanisms, cellular morphology, cell viability and lactate dehydrogenase (LDH) release were observed in human umbilical vein endothelial cells (HUVECs) as assessing cytotoxicity, resulted in a dose- and time- dependent manner. Silica nanoparticles-induced reactive oxygen species (ROS) generation caused oxidative damage followed by the production of malondialdehyde (MDA) as well as the inhibition of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px). Both necrosis and apoptosis were increased significantly after 24 h exposure. The mitochondrial membrane potential (MMP) decreased obviously in a dose-dependent manner. The degree of DNA damage including the percentage of tail DNA, tail length and Olive tail moment (OTM) were markedly aggravated. Silica nanoparticles also induced G2/M arrest through the upregulation of Chk1 and the downregulation of Cdc25C, cyclin B1/Cdc2. In summary, our data indicated that the toxic effect mechanisms of silica nanoparticles on endothelial cells was through DNA damage response (DDR) via Chk1-dependent G2/M checkpoint signaling pathway, suggesting that exposure to silica nanoparticles could be a potential hazards for the development of cardiovascular diseases.
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