99851
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Timnak A, Gerstenhaber JA, Dong K, Har-El YE, Lelkes PI. Gradient porous fibrous scaffolds: a novel approach to improving cell penetration in electrospun scaffolds. ACTA ACUST UNITED AC 2018; 13:065010. [PMID: 30129563 DOI: 10.1088/1748-605x/aadbbe] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Electrospinning is an increasingly popular technique to generate 3D fibrous tissue scaffolds that mimic the submicron sized fibers of extracellular matrices. A major drawback of electrospun scaffolds is the small interfibrillar pore size, which normally prevents cellular penetration in between fibers. In this study, we introduced a novel process, based on electrospinning, to manufacture a unique gradient porous fibrous (GPF) scaffold from soy protein isolate (SPI). The pore sizes in the GPF scaffolds gradually increase from one side of the scaffold to the other, ranging from 7.8 ± 2.5 μm in the small pore side, 21.4 ± 10.3 μm in the mid layer to 58.0 ± 23.6 μm in the large pore side. The smallest pores of the GPF scaffolds appeared to be somewhat larger than those in conventionally electrospun SPI scaffolds (4.2 ± 1.3 μm). Hydrated GPF scaffolds exhibited J-shaped stress-strain curves, reminiscent of those for soft biological scaffolds. Attachment, spreading, and proliferation of human dermal fibroblasts (HDFB) were supported on both the small and the large pore sides of the GPF scaffolds. Cultured HDFB and murine RAW 264.7 macrophages penetrated significantly deeper (98.7 ± 24.2 μm and 53.3 ± 9.6 μm, respectively) into the larger pores than when seeded onto the small pore side of GPF scaffolds (22.8 ± 6.2 μm and 25.7 ± 7.3 μm) and control SPI scaffolds. (11.3 ± 3.8 μm and 15.3 ± 3.1 μm). This study introduces a novel fabrication technique, which, by convergence of several biofabrication technologies, produces scaffolds with enhanced cellular penetration.
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99852
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Ing NL, El-Naggar MY, Hochbaum AI. Going the Distance: Long-Range Conductivity in Protein and Peptide Bioelectronic Materials. J Phys Chem B 2018; 122:10403-10423. [DOI: 10.1021/acs.jpcb.8b07431] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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99853
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Lovett JR, Derry MJ, Yang P, Hatton FL, Warren NJ, Fowler PW, Armes SP. Can percolation theory explain the gelation behavior of diblock copolymer worms? Chem Sci 2018; 9:7138-7144. [PMID: 30310636 PMCID: PMC6137452 DOI: 10.1039/c8sc02406e] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 07/25/2018] [Indexed: 12/20/2022] Open
Abstract
It is well known that polymerization-induced self-assembly (PISA) offers an efficient synthetic route for the production of highly anisotropic diblock copolymer worms. When prepared in aqueous media, such worms form thermoresponsive free-standing hydrogels that are (i) readily sterilizable, (ii) can act as a 3D matrix for the culture of normal mammalian cells and (iii) can induce stasis in human stem cell colonies. Herein we critically examine the gelation behavior of two types of diblock copolymer worms in terms of recent advances in percolation theory for rigid rods, which explicitly account for the effect of rod length polydispersity. More specifically, we use small-angle X-ray scattering (SAXS) to determine the weight-average worm contour length, L w, and the mean worm cross-sectional radius, R. This approach enables a direct comparison to be made between the theoretical critical worm volume fraction, φ c, required for gelation and the experimental values indicated by rheological measurements and tube inversion experiments. Given that these diblock copolymer worms are relatively flexible rather than truly rod-like, reasonably good agreement between these two parameters is observed, particularly for shorter, relatively stiff worms. For longer, more flexible worms a proportionality constant of approximately two is required to reconcile theory with experimental values for φ c. These findings are expected to have important implications for the aqueous gelation behavior exhibited by various other anisotropic nanoparticles, such as cellulose nanocrystals and semicrystalline block copolymer rods, and also fibril-forming small molecule (e.g. dipeptide) gelators.
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Affiliation(s)
- Joseph R Lovett
- Department of Chemistry , The University of Sheffield , Dainton Building, Brook Hill , Sheffield , South Yorkshire S3 7HF , UK .
| | - Matthew J Derry
- Department of Chemistry , The University of Sheffield , Dainton Building, Brook Hill , Sheffield , South Yorkshire S3 7HF , UK .
| | - Pengcheng Yang
- Department of Chemistry , The University of Sheffield , Dainton Building, Brook Hill , Sheffield , South Yorkshire S3 7HF , UK .
| | - Fiona L Hatton
- Department of Chemistry , The University of Sheffield , Dainton Building, Brook Hill , Sheffield , South Yorkshire S3 7HF , UK .
| | - Nicholas J Warren
- School of Chemical and Process Engineering , University of Leeds , Leeds , West Yorkshire LS2 9JT , UK
| | - Patrick W Fowler
- Department of Chemistry , The University of Sheffield , Dainton Building, Brook Hill , Sheffield , South Yorkshire S3 7HF , UK .
| | - Steven P Armes
- Department of Chemistry , The University of Sheffield , Dainton Building, Brook Hill , Sheffield , South Yorkshire S3 7HF , UK .
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99854
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Whited J, Zhang X, Nie H, Wang D, Li Y, Sun XL. Recent Chemical Biology Approaches for Profiling Cell Surface Sialylation Status. ACS Chem Biol 2018; 13:2364-2374. [PMID: 30053371 DOI: 10.1021/acschembio.8b00456] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Sialic acids (SAs) often exist as the terminal sugars of glycans of either glycoproteins or glycolipids on the cell surface and thus are directly involved in biological processes, such as cell-cell, cell-ligand, and cell-pathogen interactions. Cell surface SA expression levels and their linkages are collectively termed cell surface sialylation status, which represent varying cellular states and contribute to the overall functionality of a cell. Accordingly, systemic and specific profiling of the cell surface sialyation status is critical in deciphering the structures and functions of cell surface glycoconjugates and the molecular mechanisms of their underlying biological processes. In recent decades, several advanced chemical biology approaches have been developed to profile the cell surface sialyation status of both in vitro and in vivo samples, including metabolic labeling, direct chemical modification, and boronic acid coupling approaches. Various investigative technologies have also been explored for their unique competence, including fluorescent imaging, flow cytometry, Raman imaging, magnetic resonance imaging (MRI), and matrix-assisted laser desorption ionization imaging mass spectrometry. In particular, the sialylation status of a specific glycoprotein on the cell surface has been investigated. This review highlights the recent advancements in chemical biology approaches for profiling cell surface sialyation status. It is expected that this review will provide researchers different choices for both biological and biomedical research and applications.
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Affiliation(s)
- Joshua Whited
- Department of Chemistry, Department of Chemical and Biomedical Engineering, and Center for Gene Regulation in Health and Disease (GRHD), Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44115, United States
| | - Xiaoqing Zhang
- School of Life Science and Technology, Harbin Institute of Technology, 2 Yikuang-jie, Harbin, Heilongjiang 5001, China
| | - Huan Nie
- School of Life Science and Technology, Harbin Institute of Technology, 2 Yikuang-jie, Harbin, Heilongjiang 5001, China
| | - Dan Wang
- Department of Chemistry, Department of Chemical and Biomedical Engineering, and Center for Gene Regulation in Health and Disease (GRHD), Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44115, United States
| | - Yu Li
- School of Life Science and Technology, Harbin Institute of Technology, 2 Yikuang-jie, Harbin, Heilongjiang 5001, China
| | - Xue-Long Sun
- Department of Chemistry, Department of Chemical and Biomedical Engineering, and Center for Gene Regulation in Health and Disease (GRHD), Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44115, United States
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99855
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Hauck N, Seixas N, Centeno SP, Schlüßler R, Cojoc G, Müller P, Guck J, Wöll D, Wessjohann LA, Thiele J. Droplet-Assisted Microfluidic Fabrication and Characterization of Multifunctional Polysaccharide Microgels Formed by Multicomponent Reactions. Polymers (Basel) 2018; 10:E1055. [PMID: 30960980 PMCID: PMC6403549 DOI: 10.3390/polym10101055] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 09/14/2018] [Accepted: 09/15/2018] [Indexed: 02/01/2023] Open
Abstract
Polysaccharide-based microgels have broad applications in multi-parametric cell cultures, cell-free biotechnology, and drug delivery. Multicomponent reactions like the Passerini three-component and the Ugi four-component reaction are shown in here to be versatile platforms for fabricating these polysaccharide microgels by droplet microfluidics with a narrow size distribution. While conventional microgel formation requires pre-modification of hydrogel building blocks to introduce certain functionality, in multicomponent reactions one building block can be simply exchanged by another to introduce and extend functionality in a library-like fashion. Beyond synthesizing a range of polysaccharide-based microgels utilizing hyaluronic acid, alginate and chitosan, exemplary in-depth analysis of hyaluronic acid-based Ugi four-component gels is conducted by colloidal probe atomic force microscopy, confocal Brillouin microscopy, quantitative phase imaging, and fluorescence correlation spectroscopy to elucidate the capability of microfluidic multicomponent reactions for forming defined polysaccharide microgel networks. Particularly, the impact of crosslinker amount and length is studied. A higher network density leads to higher Young's moduli accompanied by smaller pore sizes with lower diffusion coefficients of tracer molecules in the highly homogeneous network, and vice versa. Moreover, tailored building blocks allow for crosslinking the microgels and incorporating functional groups at the same time as demonstrated for biotin-functionalized, chitosan-based microgels formed by Ugi four-component reaction. To these microgels, streptavidin-labeled enzymes are easily conjugated as shown for horseradish peroxidase (HRP), which retains its activity inside the microgels.
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Affiliation(s)
- Nicolas Hauck
- Institute of Physical Chemistry and Polymer Physics, Leibniz-Institut für Polymerforschung Dresden e.V., D-01069 Dresden, Germany.
| | - Nalin Seixas
- Department of Bioorganic Chemistry, Leibniz-Institut für Pflanzenbiochemie, D-06120 Halle (Saale), Germany.
| | - Silvia P Centeno
- Institute of Physical Chemistry, RWTH Aachen University, D-52074 Aachen, Germany.
| | - Raimund Schlüßler
- Center for Molecular and Cellular Bioengineering, Biotechnology Center, Technische Universität Dresden, D-01307 Dresden, Germany.
| | - Gheorghe Cojoc
- Center for Molecular and Cellular Bioengineering, Biotechnology Center, Technische Universität Dresden, D-01307 Dresden, Germany.
| | - Paul Müller
- Center for Molecular and Cellular Bioengineering, Biotechnology Center, Technische Universität Dresden, D-01307 Dresden, Germany.
| | - Jochen Guck
- Center for Molecular and Cellular Bioengineering, Biotechnology Center, Technische Universität Dresden, D-01307 Dresden, Germany.
| | - Dominik Wöll
- Institute of Physical Chemistry, RWTH Aachen University, D-52074 Aachen, Germany.
| | - Ludger A Wessjohann
- Department of Bioorganic Chemistry, Leibniz-Institut für Pflanzenbiochemie, D-06120 Halle (Saale), Germany.
| | - Julian Thiele
- Institute of Physical Chemistry and Polymer Physics, Leibniz-Institut für Polymerforschung Dresden e.V., D-01069 Dresden, Germany.
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99856
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Varghese E, Samuel SM, Abotaleb M, Cheema S, Mamtani R, Büsselberg D. The "Yin and Yang" of Natural Compounds in Anticancer Therapy of Triple-Negative Breast Cancers. Cancers (Basel) 2018; 10:E346. [PMID: 30248941 PMCID: PMC6209965 DOI: 10.3390/cancers10100346] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 09/18/2018] [Accepted: 09/19/2018] [Indexed: 02/07/2023] Open
Abstract
Among the different types of breast cancers, triple-negative breast cancers (TNBCs) are highly aggressive, do not respond to conventional hormonal/human epidermal growth factor receptor 2 (HER2)-targeted interventions due to the lack of the respective receptor targets, have chances of early recurrence, metastasize, tend to be more invasive in nature, and develop drug resistance. The global burden of TNBCs is increasing regardless of the number of cytotoxic drugs being introduced into the market each year as they have only moderate efficacy and/or unforeseen side effects. Therefore, the demand for more efficient therapeutic interventions, with reduced side effects, for the treatment of TNBCs is rising. While some plant metabolites/derivatives actually induce the risk of cancers, many plant-derived active principles have gained attention as efficient anticancer agents against TNBCs, with fewer adverse side effects. Here we discuss the possible oncogenic molecular pathways in TNBCs and how the purified plant-derived natural compounds specifically target and modulate the genes and/or proteins involved in these aberrant pathways to exhibit their anticancer potential. We have linked the anticancer potential of plant-derived natural compounds (luteolin, chalcones, piperine, deguelin, quercetin, rutin, fisetin, curcumin, resveratrol, and others) to their ability to target multiple dysregulated signaling pathways (such as the Wnt/β-catenin, Notch, NF-κB, PI3K/Akt/mammalian target of rapamycin (mTOR), mitogen-activated protein kinase (MAPK) and Hedgehog) leading to suppression of cell growth, proliferation, migration, inflammation, angiogenesis, epithelial-mesenchymal transition (EMT) and metastasis, and activation of apoptosis in TNBCs. Plant-derived compounds in combination with classical chemotherapeutic agents were more efficient in the treatment of TNBCs, possibly with lesser side effects.
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Affiliation(s)
- Elizabeth Varghese
- Department of Physiology and Biophysics, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, Doha 24144, Qatar.
| | - Samson Mathews Samuel
- Department of Physiology and Biophysics, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, Doha 24144, Qatar.
| | - Mariam Abotaleb
- Department of Physiology and Biophysics, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, Doha 24144, Qatar.
| | - Sohaila Cheema
- Institute for Population Health, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, Doha 24144, Qatar.
| | - Ravinder Mamtani
- Institute for Population Health, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, Doha 24144, Qatar.
| | - Dietrich Büsselberg
- Department of Physiology and Biophysics, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, Doha 24144, Qatar.
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99857
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Xia J, Li T, Lu C, Xu H. Selenium-Containing Polymers: Perspectives toward Diverse Applications in Both Adaptive and Biomedical Materials. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01597] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Jiahao Xia
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Tianyu Li
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Chenjie Lu
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Huaping Xu
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
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99858
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Stöbener DD, Donath D, Weinhart M. Fast and solvent-free microwave-assisted synthesis of thermoresponsive oligo(glycidyl ether)s. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/pola.29227] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Daniel D. Stöbener
- Institute of Chemistry and Biochemistry; Freie Universitaet Berlin; Takustr. 3, D-14195 Berlin Germany
| | - Dorian Donath
- Institute of Chemistry and Biochemistry; Freie Universitaet Berlin; Takustr. 3, D-14195 Berlin Germany
| | - Marie Weinhart
- Institute of Chemistry and Biochemistry; Freie Universitaet Berlin; Takustr. 3, D-14195 Berlin Germany
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99859
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Xing Z, Zhang C, Zhao C, Ahmad Z, Li JS, Chang MW. Targeting oxidative stress using tri-needle electrospray engineered Ganoderma lucidum polysaccharide-loaded porous yolk-shell particles. Eur J Pharm Sci 2018; 125:64-73. [PMID: 30248388 DOI: 10.1016/j.ejps.2018.09.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 09/13/2018] [Accepted: 09/20/2018] [Indexed: 12/23/2022]
Abstract
Chronic lung diseases (e.g. chronic obstructive pulmonary disease and asthma) are associated with oxidative stress and common treatments include various types of inhalation therapies. In this work Ganoderma lucidum polysaccharide (GLP), a naturally occurring antioxidant is loaded into porous Poly (ε-caprolactone) (PCL) particles using a single step tri-needle coaxial electrospray process (Tri-needle CES); with a view to develop therapies to combat oxidative stress. Based on the core-shell structure of porous yolk shell particles (YSPs), GLP-loaded YSPs displayed a bi-phasic release pattern. In vitro cell studies indicate GLP-loaded porous YSPs display good biocompatibility and positive attributes towards H2O2-induced oxidative stress in MRC-5 cells and dramatically attenuate intracellular reactive oxygen species (ROS) levels as well as significantly increase cell viability. In vivo inhalation studies indicate that GLP-loaded porous YSPs can be delivered to deep lung tissue and remain deposited for over 48 h and are subsequently removed by natural clearance mechanisms. Based on current findings GLP-loaded porous YSPs are suitable for pulmonary delivery and display good inhalation therapy potential to treat chronic lung diseases.
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Affiliation(s)
- Zheng Xing
- Key Laboratory for Biomedical Engineering of Education, Ministry of China, Zhejiang University, Hangzhou 310027, PR China; Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang 110000, PR China
| | - Chunchen Zhang
- Key Laboratory for Biomedical Engineering of Education, Ministry of China, Zhejiang University, Hangzhou 310027, PR China; Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness Appraisal, Zhejiang University, Hangzhou 310027, PR China
| | - Chen Zhao
- Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness Appraisal, Zhejiang University, Hangzhou 310027, PR China
| | - Zeeshan Ahmad
- The Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester LE1 9BH, UK
| | - Jing-Song Li
- Key Laboratory for Biomedical Engineering of Education, Ministry of China, Zhejiang University, Hangzhou 310027, PR China
| | - Ming-Wei Chang
- Key Laboratory for Biomedical Engineering of Education, Ministry of China, Zhejiang University, Hangzhou 310027, PR China; Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness Appraisal, Zhejiang University, Hangzhou 310027, PR China.
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99860
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Vogele K, Frank T, Gasser L, Goetzfried MA, Hackl MW, Sieber SA, Simmel FC, Pirzer T. Towards synthetic cells using peptide-based reaction compartments. Nat Commun 2018; 9:3862. [PMID: 30242152 PMCID: PMC6154970 DOI: 10.1038/s41467-018-06379-8] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 08/31/2018] [Indexed: 11/17/2022] Open
Abstract
Membrane compartmentalization and growth are central aspects of living cells, and are thus encoded in every cell's genome. For the creation of artificial cellular systems, genetic information and production of membrane building blocks will need to be coupled in a similar manner. However, natural biochemical reaction networks and membrane building blocks are notoriously difficult to implement in vitro. Here, we utilized amphiphilic elastin-like peptides (ELP) to create self-assembled vesicular structures of about 200 nm diameter. In order to genetically encode the growth of these vesicles, we encapsulate a cell-free transcription-translation system together with the DNA template inside the peptide vesicles. We show in vesiculo production of a functioning fluorescent RNA aptamer and a fluorescent protein. Furthermore, we implement in situ expression of the membrane peptide itself and finally demonstrate autonomous vesicle growth due to the incorporation of this ELP into the membrane.
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Affiliation(s)
- Kilian Vogele
- Physics of Synthetic Biological Systems-E14, Physics-Department and ZNN, Technische Universität München, 85748, Garching, Germany
| | - Thomas Frank
- Physics of Synthetic Biological Systems-E14, Physics-Department and ZNN, Technische Universität München, 85748, Garching, Germany
| | - Lukas Gasser
- Physics of Synthetic Biological Systems-E14, Physics-Department and ZNN, Technische Universität München, 85748, Garching, Germany
| | - Marisa A Goetzfried
- Physics of Synthetic Biological Systems-E14, Physics-Department and ZNN, Technische Universität München, 85748, Garching, Germany
| | - Mathias W Hackl
- Department of Chemistry, Center for Integrated Protein Science Munich (CIPSM), Technische Universität München, Lichtenbergstraße 4, 85748, Garching, Germany
| | - Stephan A Sieber
- Department of Chemistry, Center for Integrated Protein Science Munich (CIPSM), Technische Universität München, Lichtenbergstraße 4, 85748, Garching, Germany
| | - Friedrich C Simmel
- Physics of Synthetic Biological Systems-E14, Physics-Department and ZNN, Technische Universität München, 85748, Garching, Germany
- Nanosystems Initiative Munich, 80539, Munich, Germany
| | - Tobias Pirzer
- Physics of Synthetic Biological Systems-E14, Physics-Department and ZNN, Technische Universität München, 85748, Garching, Germany.
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99861
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Magalhães M, Alvarez-Lorenzo C, Concheiro A, Figueiras A, Santos AC, Veiga F. RNAi-based therapeutics for lung cancer: biomarkers, microRNAs, and nanocarriers. Expert Opin Drug Deliv 2018; 15:965-982. [PMID: 30232915 DOI: 10.1080/17425247.2018.1517744] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Despite the current advances in the discovery of the lung cancer biomarkers and, consequently, in the diagnosis, this pathology continues to be the primary cause of cancer-related death worldwide. In most cases, the illness is diagnosed in an advanced stage, which limits the current treatment options available and reduces the survival rate. Therefore, RNAi-based therapy arises as a promising option to treat lung cancer. AREAS COVERED This review provides an overview on the exploitation of lung cancer biology to develop RNAi-based therapeutics to be applied in the treatment of lung cancer. Furthermore, the review analyzes the main nanocarriers designed to deliver RNAi molecules and induce antitumoral effects in lung cancer, and provides updated information about current RNAi-based therapeutics for lung cancer in clinical trials. EXPERT OPINION RNAi-based therapy uses nanocarriers to perform a targeted and efficient delivery of therapeutic genes into lung cancer cells, by taking advantage of the known biomarkers in lung cancer. These therapeutic genes are key regulatory molecules of crucial cellular pathways involved in cell proliferation, migration, and apoptosis. Thereby, the characteristics and functionalization of the nanocarrier and the knowledge of lung cancer biology have direct influence in improving the therapeutic effect of this therapy.
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Affiliation(s)
- Mariana Magalhães
- a Department of Pharmaceutical Technology, Faculty of Pharmacy , University of Coimbra , Coimbra , Portugal.,b REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy , University of Coimbra , Coimbra , Portugal
| | - Carmen Alvarez-Lorenzo
- c Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, R+D Pharma Group (GI-1645), Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS) , Universidade de Santiago de Compostela , Santiago de Compostela , Spain
| | - Angel Concheiro
- c Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, R+D Pharma Group (GI-1645), Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS) , Universidade de Santiago de Compostela , Santiago de Compostela , Spain
| | - Ana Figueiras
- a Department of Pharmaceutical Technology, Faculty of Pharmacy , University of Coimbra , Coimbra , Portugal.,b REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy , University of Coimbra , Coimbra , Portugal
| | - Ana Cláudia Santos
- a Department of Pharmaceutical Technology, Faculty of Pharmacy , University of Coimbra , Coimbra , Portugal.,b REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy , University of Coimbra , Coimbra , Portugal
| | - Francisco Veiga
- a Department of Pharmaceutical Technology, Faculty of Pharmacy , University of Coimbra , Coimbra , Portugal.,b REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy , University of Coimbra , Coimbra , Portugal
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99862
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Zhou D, Huang Y, Tu K. Effect of konjac glucomannan coating on antioxidant capacity and phenolic metabolism in fresh-cut lotus roots. J FOOD PROCESS PRES 2018. [DOI: 10.1111/jfpp.13759] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dandan Zhou
- College of Food Science and Technology; Nanjing Agricultural University; Nanjing China
| | - Yangmin Huang
- College of Food Science and Technology; Nanjing Agricultural University; Nanjing China
| | - Kang Tu
- College of Food Science and Technology; Nanjing Agricultural University; Nanjing China
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99863
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99864
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Kim M, Erickson IE, Huang AH, Garrity ST, Mauck RL, Steinberg DR. Donor Variation and Optimization of Human Mesenchymal Stem Cell Chondrogenesis in Hyaluronic Acid. Tissue Eng Part A 2018; 24:1693-1703. [PMID: 29792383 DOI: 10.1089/ten.tea.2017.0520] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Mesenchymal stem cells (MSCs) are an attractive cell type for cartilage repair that can undergo chondrogenesis in a variety of three-dimensional (3D) scaffolds. Hyaluronic acid (HA) hydrogels provide a biologically relevant interface for cell encapsulation. While previous studies have shown that MSC-laden HA constructs can mature in vitro to match native mechanical properties using cells from animal sources, clinical application will depend on the successful translation of these findings to human cells. Though numerous studies have investigated chondrogenesis of human MSC (hMSC)-laden constructs, their functional outcomes were quite inferior to those using animal sources, and donor-specific responses to 3D HA hydrogels have not been fully investigated. To that end, hMSCs were derived from seven donors, and their ability to undergo chondrogenesis in pellet culture and HA hydrogels was evaluated. Given the initial observation of overt cell aggregation and/or gel contraction for some donors, the impact of variation in cell and HA macromer concentration on functional outcomes during chondrogenesis was evaluated using one young/healthy donor. The findings show marked differences in functional chondrogenesis of hMSCs in 3D HA hydrogels based on donor. Increasing cell density resulted in increased mechanical properties, but also promoted construct contraction. Increasing the macromer density generally stabilized construct dimensions and increased extracellular matrix production, but limited the distribution of formed matrix at the center of the construct and reduced mechanical properties. Collectively, these findings suggest that the use of hMSCs may require tuning of cell density and gel mechanics on a donor-by-donor basis to provide for the most robust tissue formation for clinical application.
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Affiliation(s)
- Minwook Kim
- 1 McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania , Philadelphia, Pennsylvania.,2 Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania , Philadelphia, Pennsylvania.,3 Translational Musculoskeletal Research Center (TMRC), Corporal Michael J. Crescenz Veterans Affairs Medical Center , Philadelphia, Pennsylvania
| | - Isaac E Erickson
- 1 McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania , Philadelphia, Pennsylvania.,4 DiscGenics, Inc. , Salt Lake City, Utah
| | - Alice H Huang
- 1 McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania , Philadelphia, Pennsylvania.,5 Department of Orthopaedics, Icahn School of Medicine at Mount Sinai , New York, New York
| | - Sean T Garrity
- 1 McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania , Philadelphia, Pennsylvania
| | - Robert L Mauck
- 1 McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania , Philadelphia, Pennsylvania.,2 Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania , Philadelphia, Pennsylvania.,3 Translational Musculoskeletal Research Center (TMRC), Corporal Michael J. Crescenz Veterans Affairs Medical Center , Philadelphia, Pennsylvania
| | - David R Steinberg
- 1 McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania , Philadelphia, Pennsylvania.,3 Translational Musculoskeletal Research Center (TMRC), Corporal Michael J. Crescenz Veterans Affairs Medical Center , Philadelphia, Pennsylvania
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99865
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Garni M, Einfalt T, Goers R, Palivan CG, Meier W. Live Follow-Up of Enzymatic Reactions Inside the Cavities of Synthetic Giant Unilamellar Vesicles Equipped with Membrane Proteins Mimicking Cell Architecture. ACS Synth Biol 2018; 7:2116-2125. [PMID: 30145889 DOI: 10.1021/acssynbio.8b00104] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Compartmentalization of functional biological units, cells, and organelles serves as an inspiration for the development of biomimetic materials with unprecedented properties and applications in biosensing and medicine. Because of the complexity of cells, the design of ideal functional materials remains a challenge. An elegant strategy to obtain cell-like compartments as novel materials with biofunctionality is the combination of synthetic micrometer-sized giant unilamellar vesicles (GUVs) with biomolecules because it enables studying the behavior of biomolecules and processes within confined cavities. Here we introduce a functional cell-mimetic compartment formed by insertion of the model biopore bacterial membrane protein OmpF in thick synthetic membranes of an artificial GUV compartment that encloses-as a model-the oxidative enzyme horseradish peroxidase. In this manner, a simple and robust cell mimic is designed: the biopore serves as a gate that allows substrates to enter cavities of the GUVs, where they are converted into products by the encapsulated enzyme and then released in the environments of GUVs. Our bioequipped GUVs facilitate the control of specific catalytic reactions in confined microscale spaces mimicking cell size and architecture and thus provide a straightforward approach serving to obtain deeper insights into biological processes inside cells in real time.
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Affiliation(s)
- Martina Garni
- Department of Chemistry, University of Basel, Mattenstrasse 24a, CH-4002 Basel, Switzerland
| | - Tomaz Einfalt
- Department of Chemistry, University of Basel, Mattenstrasse 24a, CH-4002 Basel, Switzerland
| | - Roland Goers
- Department of Chemistry, University of Basel, Mattenstrasse 24a, CH-4002 Basel, Switzerland
- Department of Biosystems Science and Engineering, ETH Zürich, Mattenstrasse 26, CH-4058 Basel, Switzerland
| | - Cornelia G. Palivan
- Department of Chemistry, University of Basel, Mattenstrasse 24a, CH-4002 Basel, Switzerland
| | - Wolfgang Meier
- Department of Chemistry, University of Basel, Mattenstrasse 24a, CH-4002 Basel, Switzerland
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99866
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He B, Zhu X, Zhao C, Ma Y, Yang W. Sequential co-immobilization of β-glucosidase and yeast cells on single polymer support for bioethanol production. Sci China Chem 2018. [DOI: 10.1007/s11426-018-9319-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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99867
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Skimmed Milk-Based Encapsulation for Enhanced Stability and Viability of Lactobacillus gastricus BTM 7 Under Simulated Gastrointestinal Conditions. Probiotics Antimicrob Proteins 2018; 11:850-856. [PMID: 30232745 DOI: 10.1007/s12602-018-9472-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The present study investigated skimmed milk and alginate-based encapsulation for protection of a probiotic strain, Lactobacillus gastricus BTM7 during storage and exposure to simulated gastrointestinal conditions. The investigations have revealed that coating with skimmed milk and alginate in a ratio of 1:1 resulted in highest encapsulation efficiency of 94% (p < 0.05) with approximately 1 log reduction in viable cell count and 90% release of encapsulated cells in 90 min. This formulation resulted in 5-fold higher survival of bacteria during storage at refrigeration for 21 days (p < 0.05). The encapsulation of L. gastricus BTM7 provided better protection at the pH of gastric juice or pancreatic conditions with 4- and 9-fold increase in survivability after 2 h of incubation. The principal component analysis (PCA) revealed the potential of skimmed milk supplementation to alginate (1:1) to enhance survival of probiotic strain under refrigerated storage, a process that can be safely incorporated into dairy products.
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99868
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Sahoo D, Imam MR, Peterca M, Partridge BE, Wilson DA, Zeng X, Ungar G, Heiney PA, Percec V. Hierarchical Self-Organization of Chiral Columns from Chiral Supramolecular Spheres. J Am Chem Soc 2018; 140:13478-13487. [DOI: 10.1021/jacs.8b09174] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Dipankar Sahoo
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Mohammad R. Imam
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Mihai Peterca
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396, United States
| | - Benjamin E. Partridge
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Daniela A. Wilson
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Xiangbing Zeng
- Department of Materials Science and Engineering, University of Sheffield, Sheffield, S1 3JD, United Kingdom
| | - Goran Ungar
- Department of Materials Science and Engineering, University of Sheffield, Sheffield, S1 3JD, United Kingdom
- Department of Physics, Zhejiang Sci-Tech University, 310018 Hangzhou, China
| | - Paul A. Heiney
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396, United States
| | - Virgil Percec
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
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99869
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Zinovyev G, Sulaeva I, Podzimek S, Rössner D, Kilpeläinen I, Sumerskii I, Rosenau T, Potthast A. Getting Closer to Absolute Molar Masses of Technical Lignins. CHEMSUSCHEM 2018; 11:3259-3268. [PMID: 29989331 PMCID: PMC6175078 DOI: 10.1002/cssc.201801177] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 07/08/2018] [Indexed: 05/07/2023]
Abstract
Determination of molecular weight parameters of native and, in particular, technical lignins are based on size exclusion chromatography (SEC) approaches. However, no matter which approach is used, either conventional SEC with a refractive index detector and calibration with standards or multi-angle light scattering (MALS) detection at 488 nm, 633 nm, 658 nm, or 690 nm, all variants can be severely erroneous. The lack of calibration standards with high structural similarity to lignin impairs the quality of the molar masses determined by conventional SEC, and the typical fluorescence of (technical) lignins renders the corresponding MALS data rather questionable. Application of MALS detection at 785 nm by using an infrared laser largely overcomes those problems and allows for a reliable and reproducible determination of the molar mass distributions of all types of lignins, which has been demonstrated in this study for various and structurally different analytes, such as kraft lignins, milled-wood lignin, lignosulfonates, and biorefinery lignins. The topics of calibration, lignin fluorescence, and lignin UV absorption in connection with MALS detection are critically discussed in detail, and a reliable protocol is presented. Correction factors based on MALS measurements have been determined for commercially available calibration standards, such as pullulan and polystyrene sulfonate, so that now more reliable mass data can be obtained also if no MALS system is available and these conventional calibration standards have to be resorted to.
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Affiliation(s)
- Grigory Zinovyev
- Department of Chemistry, Division of Chemistry of Renewable ResourcesUniversity of Natural Resources and Life Sciences, ViennaKonrad-Lorenz-Strasse 24A-3430TullnAustria
| | - Irina Sulaeva
- Department of Chemistry, Division of Chemistry of Renewable ResourcesUniversity of Natural Resources and Life Sciences, ViennaKonrad-Lorenz-Strasse 24A-3430TullnAustria
| | - Stepan Podzimek
- Wyatt Technology Europe GmbHHochstrasse 12a56307DernbachGermany
- Institute of Chemistry and Technology of Macromolecular MaterialsUniversity of PardubiceStudentska 573Pardubice532 10Czech Republic
| | - Dierk Rössner
- Wyatt Technology Europe GmbHHochstrasse 12a56307DernbachGermany
| | - Ilkka Kilpeläinen
- Department of ChemistryUniversity of HelsinkiA.I. Virtasen Aukio 100014HelsinkiFinland
| | - Ivan Sumerskii
- Department of Chemistry, Division of Chemistry of Renewable ResourcesUniversity of Natural Resources and Life Sciences, ViennaKonrad-Lorenz-Strasse 24A-3430TullnAustria
| | - Thomas Rosenau
- Department of Chemistry, Division of Chemistry of Renewable ResourcesUniversity of Natural Resources and Life Sciences, ViennaKonrad-Lorenz-Strasse 24A-3430TullnAustria
| | - Antje Potthast
- Department of Chemistry, Division of Chemistry of Renewable ResourcesUniversity of Natural Resources and Life Sciences, ViennaKonrad-Lorenz-Strasse 24A-3430TullnAustria
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99870
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Aktas Eken G, Acar MH. Polysulfone-Based Shape Memory Thermoplastics with Body Temperature Triggering. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800227] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Gozde Aktas Eken
- G. A. Eken, Prof. M. H. Acar; Macromolecular Engineering Research Laboratory; Chemistry Department; Istanbul Technical University; Maslak 34469 Istanbul Turkey
| | - Metin H. Acar
- G. A. Eken, Prof. M. H. Acar; Macromolecular Engineering Research Laboratory; Chemistry Department; Istanbul Technical University; Maslak 34469 Istanbul Turkey
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99871
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Que RA, Crakes DR, Abdulhadi F, Niu C, Da Silva NA, Wang S. Tailoring Collagen to Engineer the Cellular Microenvironment. Biotechnol J 2018; 13:e1800140. [DOI: 10.1002/biot.201800140] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Revised: 08/14/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Richard A. Que
- Department of Biomedical EngineeringUniversity of CaliforniaIrvineCA92697USA
| | - Dale R. Crakes
- Department of Biomedical EngineeringUniversity of CaliforniaIrvineCA92697USA
| | - Faten Abdulhadi
- Department of Chemical and Biomolecular EngineeringUniversity of CaliforniaIrvineCA92697USA
| | - Chun‐Hao Niu
- Department of Chemical and Biomolecular EngineeringUniversity of CaliforniaIrvineCA92697USA
| | - Nancy A. Da Silva
- Department of Biomedical EngineeringUniversity of CaliforniaIrvineCA92697USA
- Department of Chemical and Biomolecular EngineeringUniversity of CaliforniaIrvineCA92697USA
| | - Szu‐Wen Wang
- Department of Biomedical EngineeringUniversity of CaliforniaIrvineCA92697USA
- Department of Chemical and Biomolecular EngineeringUniversity of CaliforniaIrvineCA92697USA
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99872
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Guo Z, Zhang D, Song S, Shu Y, Chen X, Wang J. Complexes of magnetic nanospheres with amphiprotic polymer-Zn systems for the selective isolation of lactoferrin. J Mater Chem B 2018; 6:5596-5603. [PMID: 32254969 DOI: 10.1039/c8tb01341a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Amphiprotic polymer-Zn complex magnetic nanospheres, termed Fe3O4@PCL-CMC-Zn, are designed and prepared via a step-wise synthetic strategy. Hydrophobic polycaprolactone (PCL) is firstly coated onto the magnetic Fe3O4 nanospheres, and then hydrophilic carboxymethylcellulose (CMC) is grafted onto the hydrophobic PCL blocks via an esterification reaction, followed by finally chelating with Zn2+ ions. The homogeneous core-shell structure and fastened amphiprotic polymer layer provide the as-prepared Fe3O4@PCL-CMC-Zn magnetic nanospheres with improved protein binding behavior, and the chelated Zn2+ offers the nanospheres favorable adsorption selectivity towards apo-lactoferrin. The adsorption capacity of apo-lactoferrin is high, up to 615.3 mg g-1. The exploitation of FeCl3 as a stripping reagent not only provides efficient recovery of the adsorbed apo-lactoferrin, i.e. a recovery of 83.2%, but also achieves the restoration of the lactoferrin structure. The Fe3O4@PCL-CMC-Zn magnetic nanospheres are then employed as a sorbent for the selective isolation of lactoferrin from human colostrum samples, obtaining high-purity lactoferrin as demonstrated by SDS-PAGE and Q-TOF LC-MS assays.
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Affiliation(s)
- Zhiyong Guo
- Research Center for Analytical Sciences, Department of Chemistry, Northeastern University, Box 332, Shenyang 110819, China.
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99873
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Schulz-Mirbach T, Ladich F, Plath M, Heß M. Enigmatic ear stones: what we know about the functional role and evolution of fish otoliths. Biol Rev Camb Philos Soc 2018; 94:457-482. [DOI: 10.1111/brv.12463] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 08/16/2018] [Accepted: 08/20/2018] [Indexed: 12/11/2022]
Affiliation(s)
- Tanja Schulz-Mirbach
- Department Biology II, Zoology; Ludwig-Maximilians-University; Großhaderner Strasse 2, 82152 Planegg-Martinsried Germany
| | - Friedrich Ladich
- Department of Behavioural Biology; University of Vienna; Althanstrasse 14, 1090 Vienna Austria
| | - Martin Plath
- College of Animal Science & Technology; Northwest A&F University; 22 Xinong Road, Yangling Shaanxi China
| | - Martin Heß
- Department Biology II, Zoology; Ludwig-Maximilians-University; Großhaderner Strasse 2, 82152 Planegg-Martinsried Germany
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99874
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Surface functionalization of polytetrafluoroethylene substrate with hybrid processes comprising plasma treatment and chemical reactions. Colloids Surf B Biointerfaces 2018; 173:77-84. [PMID: 30267957 DOI: 10.1016/j.colsurfb.2018.09.051] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 09/04/2018] [Accepted: 09/21/2018] [Indexed: 01/01/2023]
Abstract
Polytetrafluoroethylene (PTFE) exhibits excellent mechanical properties and chemical stability and has been widely used in medical fields for the preparation of implantable medical devices. However, the implantation of PTFE in living systems results in inflammation reactions and infections at the surface thus limits its long-term applications. For PTFE surface modification, we examined the effects of mussel-inspired polydopamine (PDA) coating and the further introduction of functional groups. During PDA coating, the plasma pretreatment on PTFE enhanced the stability of the PDA coating layer. Furthermore, the introduction of functional groups on the PDA layer was carried out using reactive functional groups for the photoinduced graft polymerization of methacrylate. For instance, 2-methacryloyloxyethyl phosphorylcholine (MPC) could be polymerized from the surface of the substrate. These chemical modifications were confirmed step by step using spectroscopes to obtain the hydrophilic surface of the poly(MPC)-modified PTFE. The protein adsorption behaviors on PTFE and poly(MPC)-modified PTFE were compared to understand biocompatibility characteristics of these substrates. The surface of PTFE was immediately covered with albumin and the contact between the substrate and the serum resulted in an increase in the fibrinogen composition with time. On the other hand, fewer proteins were adsorbed on the poly(MPC)-modified PTFE substrate. Thus, this modification procedure would serve as a strategy for safer alterations in PTFE surfaces to expand the life span of the PTFE-carrying medical devices in living systems.
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99875
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Harris S, Piotrowska MJ, Goldstone RJ, Qi R, Foster G, Dobrindt U, Madec JY, Valat C, Rao FV, Smith DGE. Variant O89 O-Antigen of E. coli Is Associated With Group 1 Capsule Loci and Multidrug Resistance. Front Microbiol 2018; 9:2026. [PMID: 30233517 PMCID: PMC6128206 DOI: 10.3389/fmicb.2018.02026] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 08/09/2018] [Indexed: 11/13/2022] Open
Abstract
Bacterial surface polysaccharides play significant roles in fitness and virulence. In Gram-negative bacteria such as Escherichia coli, major surface polysaccharides are lipopolysaccharide (LPS) and capsule, representing O- and K-antigens, respectively. There are multiple combinations of O:K types, many of which are well-characterized and can be related to ecotype or pathotype. In this investigation, we have identified a novel O:K permutation resulting through a process of major genome reorganization in a clade of E. coli. A multidrug-resistant, extended-spectrum β-lactamase (ESBL)-producing strain - E. coli 26561 - represented a prototype of strains combining a locus variant of O89 and group 1 capsular polysaccharide. Specifically, the variant O89 locus in this strain was truncated at gnd, flanked by insertion sequences and located between nfsB and ybdK and we apply the term O89m for this variant. The prototype lacked colanic acid and O-antigen loci between yegH and hisI with this tandem polysaccharide locus being replaced with a group 1 capsule (G1C) which, rather than being a recognized E. coli capsule type, this locus matched to Klebsiella K10 capsule type. A genomic survey identified more than 200 E. coli strains which possessed the O89m locus variant with one of a variety of G1C types. Isolates from our collection with the combination of O89m and G1C all displayed a mucoid phenotype and E. coli 26561 was unusual in exhibiting a mucoviscous phenotype more recognized as a characteristic among Klebsiella strains. Despite the locus truncation and novel location, all O89m:G1C strains examined showed a ladder pattern typifying smooth LPS and also showed high molecular weight, alcian blue-staining polysaccharide in cellular and/or extra-cellular fractions. Expression of both O-antigen and capsule biosynthesis loci were confirmed in prototype strain 26561 through quantitative proteome analysis. Further in silico exploration of more than 200 E. coli strains possessing the O89m:G1C combination identified a very high prevalence of multidrug resistance (MDR) - 85% possessed resistance to three or more antibiotic classes and a high proportion (58%) of these carried ESBL and/or carbapenemase. The increasing isolation of O89m:G1C isolates from extra-intestinal infection sites suggests that these represents an emergent clade of invasive, MDR E. coli.
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Affiliation(s)
- Susan Harris
- Institute of Biological Chemistry, Biophysics and Bioengineering, Heriot-Watt University, Edinburgh, United Kingdom
| | - Marta J Piotrowska
- Institute of Biological Chemistry, Biophysics and Bioengineering, Heriot-Watt University, Edinburgh, United Kingdom
| | | | - Ruby Qi
- Institute of Biological Chemistry, Biophysics and Bioengineering, Heriot-Watt University, Edinburgh, United Kingdom
| | - Geoffrey Foster
- Veterinary Services, SAC Consulting, Scotland's Rural College, Inverness, United Kingdom
| | - Ulrich Dobrindt
- Institute of Hygiene, University of Münster, Münster, Germany
| | - Jean-Yves Madec
- Unité Antibiorésistances et Virulences Bactériennes, Anses Laboratoire de Lyon, Université Lyon-1, Lyon, France
| | - Charlotte Valat
- Unité Antibiorésistances et Virulences Bactériennes, Anses Laboratoire de Lyon, Université Lyon-1, Lyon, France
| | | | - David G E Smith
- Institute of Biological Chemistry, Biophysics and Bioengineering, Heriot-Watt University, Edinburgh, United Kingdom
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99876
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Development of a PCL/gelatin/chitosan/β-TCP electrospun composite for guided bone regeneration. Prog Biomater 2018; 7:225-237. [PMID: 30242739 PMCID: PMC6173671 DOI: 10.1007/s40204-018-0098-x] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 09/07/2018] [Indexed: 01/01/2023] Open
Abstract
Many approaches have been developed to regenerate biological substitutes for repairing damaged tissues. Guided bone/tissue regeneration (GBR/GTR) that employs a barrier membrane has received much attention in recent years. Regardless of substantial efforts for treatment of damaged tissue in recent years, an effective therapeutic strategy is still a challenge for tissue engineering researchers. The aim of the current study is to fabricate a GBR membrane consisting of polycaprolactone (PCL)/gelatin/chitosan which is modified with different percentages of β-tricalcium phosphate (β-TCP) for improved biocompatibility, mechanical properties, and antibacterial activity. The membranes are examined for their mechanical properties, surface roughness, hydrophilicity, biodegradability and biological response. The mechanical properties, wettability and roughness of the membranes are improved with increases in β-TCP content. An increase in the elastic modulus of the substrates is obtained as the amount of β-TCP increases to 5% (145–200 MPa). After 5 h, the number of attached cells is enhanced by 30%, 40% and 50% on membranes having 1%, 3% and 5% β-TCP, respectively. The cell growth on a membrane with 3% of β-TCP is also 50% and 20% higher than those without β-TCP and 5% β-TCP, respectively. Expression of type I collagen is increased with addition of β-TCP by 3%, while there is no difference in ALP activity. The results indicated that a composite having (3%) β-TCP has a potential application for guided bone tissue regeneration.
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99877
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Xie C, Sun W, Lu H, Kretzschmann A, Liu J, Wagner M, Butt HJ, Deng X, Wu S. Reconfiguring surface functions using visible-light-controlled metal-ligand coordination. Nat Commun 2018; 9:3842. [PMID: 30242263 PMCID: PMC6154962 DOI: 10.1038/s41467-018-06180-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 08/20/2018] [Indexed: 12/16/2022] Open
Abstract
Most surfaces are either static or switchable only between “on” and “off” states for a specific application. It is a challenge to develop reconfigurable surfaces that can adapt to rapidly changing environments or applications. Here, we demonstrate fabrication of surfaces that can be reconfigured for user-defined functions using visible-light-controlled Ru–thioether coordination chemistry. We modify substrates with Ru complex Ru-H2O. To endow a Ru-H2O-modified substrate with a certain function, a functional thioether ligand is immobilized on the substrate via Ru–thioether coordination. To change the surface function, the immobilized thioether ligand is cleaved from the substrate by visible-light-induced ligand dissociation, and then another thioether ligand with a distinct function is immobilized on the substrate. Different thioethers endow the surface with different functions. Based on this strategy, we rewrite surface patterns, manipulate protein adsorption, and control surface wettability. This strategy enables the fabrication of reconfigurable surfaces with customizable functions on demand. Configuring surfaces on-demand for desired functionalities is an ongoing challenge. Here, diverse and tailorable modifications of quartz and porous silica surfaces that are rapidly and reversibly switchable by the use of visible light are achieved via ruthenium-thioether coordination.
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Affiliation(s)
- Chaoming Xie
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, 610054, Chengdu, China.,Max Planck Institute for Polymer Research, 55128, Mainz, Germany
| | - Wen Sun
- Max Planck Institute for Polymer Research, 55128, Mainz, Germany
| | - Hao Lu
- Max Planck Institute for Polymer Research, 55128, Mainz, Germany
| | | | - Jiahui Liu
- Max Planck Institute for Polymer Research, 55128, Mainz, Germany
| | - Manfred Wagner
- Max Planck Institute for Polymer Research, 55128, Mainz, Germany
| | - Hans-Jürgen Butt
- Max Planck Institute for Polymer Research, 55128, Mainz, Germany
| | - Xu Deng
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, 610054, Chengdu, China.
| | - Si Wu
- Max Planck Institute for Polymer Research, 55128, Mainz, Germany. .,Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Anhui Key Laboratory of Optoelectronic Science and Technology, Innovation Centre of Chemistry for Energy Materials, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, China.
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99878
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Chen R, Zhang H, Yan J, Bryers JD. Scaffold-mediated delivery for non-viral mRNA vaccines. Gene Ther 2018; 25:556-567. [PMID: 30242259 DOI: 10.1038/s41434-018-0040-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 08/22/2018] [Accepted: 08/28/2018] [Indexed: 02/06/2023]
Abstract
mRNA is increasingly being recognized as a promising alternative to pDNA in gene vaccinations. Only recently, owing to the needs of cancer immunotherapies, has the biomaterials/gene delivery community begun to develop new biomaterial strategies for immunomodulation. Here, we report a novel way to use implantable porous scaffolds as a local gene delivery depot to enhance mRNA vaccine immunization in vitro, and in vivo when compared with conventional bolus injections. We first evaluated transfection efficiencies of single-stranded mRNA condensed and charge neutralized with two lipids (Lipofectamine Messenger MAXTM LM-MM and StemfectTM SF) and two cationic polymers (in vivo-jetPEI™, Poly (β-amino ester)) as gene carriers. As SF demonstrated highest in vitro transfection and cell viability, it was selected for subsequent porous polymer scaffold-loading trials. Enhanced in vitro transfection of SF:mRNA nanoparticle-loaded poly (2-hydroxyethyl methacrylate) (pHEMA) scaffolds was also observed with a DC2.4 cell line. Improved sustained local release and local transgene expression were also demonstrated with SF:mRNA nanoparticle-loaded pHEMA scaffolds in vivo compared with bolus injections. Our results suggest that mRNA polyplex-loaded scaffolds may be a superior alternative to either repeated bolus immunizations or ex vivo transfection cell immunotherapies.
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Affiliation(s)
- Ruying Chen
- Department of Bioengineering, University of Washington, Seattle, WA, 98195-5061, USA
| | - Hong Zhang
- Department of Bioengineering, University of Washington, Seattle, WA, 98195-5061, USA
| | - Jingxuan Yan
- Department of Bioengineering, University of Washington, Seattle, WA, 98195-5061, USA
| | - James D Bryers
- Department of Bioengineering, University of Washington, Seattle, WA, 98195-5061, USA.
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99879
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RIEDELOVÁ Z, MÁJEK P, PEČÁNKOVÁ K, KUČEROVÁ J, SURMAN F, DE LOS SANTOS PEREIRA A, RIEDEL T. SPR Biosensor for Quantification of Fetuin-A as a Promising Multibiomarker. Physiol Res 2018; 67:S367-S375. [DOI: 10.33549/physiolres.933982] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Early diagnosis of ongoing malignant disease is crucial to improve survival rate and life quality of the patients and requires sensitive detection of specific biomarkers e.g. prostate-specific antigen (PSA), carcinoembryonic antigen (CEA), alpha-fetoprotein (AFP), etc. In spite of current technological advances, malignant diseases are still identified in rather late stages, which have detrimental effect on the prognosis and treatment of the disease. Here, we present a biosensor able to detect fetuin-A, a potential multibiomarker. The biosensing platform is based on polymer brush combining antifouling monomer units of N-(2-hydroxypropyl)methacrylamide (HPMA) and carboxybetaine methacrylamide (CBMAA), statistically copolymerized by surface-initiated atom transfer radical polymerization. The copolymer poly(HPMA-co-CBMAA) exhibits excellent non-fouling properties in the most relevant biological media (i.e. blood plasma) as well as antithrombogenic surface properties by preventing the adhesion of blood components (i.e. leukocytes; platelets; and erythrocytes). Moreover, the polymer brush can be easily functionalized with biorecognition elements maintaining high resistance to blood fouling and the binding capacity can be regulated by tuning the ratio between CBMAA and HPMA units. The superior antifouling properties of the copolymer even after biofunctionalization were exploited to fabricate a new plasmonic biosensor for the analysis of fetuin-A in real clinical blood plasma samples. The assay used in this work can be explored as label-free affinity biosensor for diagnostics of different biomarkers in real clinical plasma samples and to shift the early biomarker detection toward novel biosensor technologies allowing point of care analysis.
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Affiliation(s)
| | | | | | | | | | | | - T. RIEDEL
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Prague, Czech Republic
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99880
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Amdursky N, Mazo MM, Thomas MR, Humphrey EJ, Puetzer JL, St-Pierre JP, Skaalure SC, Richardson RM, Terracciano CM, Stevens MM. Elastic serum-albumin based hydrogels: mechanism of formation and application in cardiac tissue engineering. J Mater Chem B 2018; 6:5604-5612. [PMID: 30283632 PMCID: PMC6166857 DOI: 10.1039/c8tb01014e] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Hydrogels are promising materials for mimicking the extra-cellular environment. Here, we present a simple methodology for the formation of a free-standing viscoelastic hydrogel from the abundant and low cost protein serum albumin. We show that the mechanical properties of the hydrogel exhibit a complicated behaviour as a function of the weight fraction of the protein component. We further use X-ray scattering to shed light on the mechanism of gelation from the formation of a fibrillary network at low weight fractions to interconnected aggregates at higher weight fractions. Given the match between our hydrogel elasticity and that of the myocardium, we investigated its potential for supporting cardiac cells in vitro. Interestingly, these hydrogels support the formation of several layers of myocytes and significantly promote the maintenance of a native-like gene expression profile compared to those cultured on glass. When confronted with a multicellular ventricular cell preparation, the hydrogels can support macroscopically contracting cardiac-like tissues with a distinct cell arrangement, and form mm-long vascular-like structures. We envisage that our simple approach for the formation of an elastic substrate from an abundant protein makes the hydrogel a compelling biomedical material candidate for a wide range of cell types.
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Affiliation(s)
- Nadav Amdursky
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College Lodon, London, SW7 2AZ, UK
| | - Manuel M. Mazo
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College Lodon, London, SW7 2AZ, UK
| | - Michael R. Thomas
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College Lodon, London, SW7 2AZ, UK
| | - Eleanor J. Humphrey
- National Heart and Lung Institute, Imperial Centre for Translational and Experimental Medicine, Imperial College London, London, SW7 2AZ, UK
| | - Jennifer L. Puetzer
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College Lodon, London, SW7 2AZ, UK
| | - Jean-Philippe St-Pierre
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College Lodon, London, SW7 2AZ, UK
| | - Stacey C. Skaalure
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College Lodon, London, SW7 2AZ, UK
| | | | - Cesare M. Terracciano
- National Heart and Lung Institute, Imperial Centre for Translational and Experimental Medicine, Imperial College London, London, SW7 2AZ, UK
| | - Molly M. Stevens
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College Lodon, London, SW7 2AZ, UK
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99881
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Q Mesquita M, J Dias C, P M S Neves MG, Almeida A, F Faustino MA. Revisiting Current Photoactive Materials for Antimicrobial Photodynamic Therapy. Molecules 2018; 23:E2424. [PMID: 30248888 PMCID: PMC6222430 DOI: 10.3390/molecules23102424] [Citation(s) in RCA: 115] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 09/14/2018] [Accepted: 09/18/2018] [Indexed: 12/22/2022] Open
Abstract
Microbial infection is a severe concern, requiring the use of significant amounts of antimicrobials/biocides, not only in the hospital setting, but also in other environments. The increasing use of antimicrobial drugs and the rapid adaptability of microorganisms to these agents, have contributed to a sharp increase of antimicrobial resistance. It is obvious that the development of new strategies to combat planktonic and biofilm-embedded microorganisms is required. Photodynamic inactivation (PDI) is being recognized as an effective method to inactivate a broad spectrum of microorganisms, including those resistant to conventional antimicrobials. In the last few years, the development and biological assessment of new photosensitizers for PDI were accompanied by their immobilization in different supports having in mind the extension of the photodynamic principle to new applications, such as the disinfection of blood, water, and surfaces. In this review, we intended to cover a significant amount of recent work considering a diversity of photosensitizers and supports to achieve an effective photoinactivation. Special attention is devoted to the chemistry behind the preparation of the photomaterials by recurring to extensive examples, illustrating the design strategies. Additionally, we highlighted the biological challenges of each formulation expecting that the compiled information could motivate the development of other effective photoactive materials.
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Affiliation(s)
- Mariana Q Mesquita
- Department of Chemistry and QOPNA, University of Aveiro, 3810-193 Aveiro, Portugal.
- Department of Biomedical Sciences and iBiMED, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Cristina J Dias
- Department of Chemistry and QOPNA, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Maria G P M S Neves
- Department of Chemistry and QOPNA, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Adelaide Almeida
- Department of Biology CESAM, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - M Amparo F Faustino
- Department of Chemistry and QOPNA, University of Aveiro, 3810-193 Aveiro, Portugal.
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99882
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Banerjee SR, Kumar V, Lisok A, Plyku D, Nováková Z, Brummet M, Wharram B, Barinka C, Hobbs R, Pomper MG. Evaluation of 111In-DOTA-5D3, a Surrogate SPECT Imaging Agent for Radioimmunotherapy of Prostate-Specific Membrane Antigen. J Nucl Med 2018; 60:400-406. [PMID: 30237212 DOI: 10.2967/jnumed.118.214403] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 09/07/2018] [Indexed: 12/21/2022] Open
Abstract
5D3 is a new high-affinity murine monoclonal antibody specific for prostate-specific membrane antigen (PSMA). PSMA is a target for the imaging and therapy of prostate cancer. 111In-labeled antibodies have been used as surrogates for 177Lu/90Y-labeled therapeutics. We characterized 111In-DOTA-5D3 by SPECT/CT imaging, tissue biodistribution studies, and dosimetry. Methods: Radiolabeling, stability, cell uptake, and internalization of 111In-DOTA-5D3 were performed by established techniques. Biodistribution and SPECT imaging were done on male nonobese diabetic/severe combined immunodeficient (NOD/SCID) mice bearing human PSMA(+) PC3 PIP and PSMA(-) PC3 flu prostate cancer xenografts on the upper right and left flanks, respectively, at 2, 24, 48, 72, and 192 h after injection. Biodistribution was also evaluated in tumor-free, healthy male CD-1 mice. Blocking studies were performed by coinjection of a 10-fold and 50-fold excess of 5D3 followed by biodistribution at 24 h to determine PSMA binding specificity. The absorbed radiation doses were calculated on the basis of murine biodistribution data, which were translated to a human adult man using organ weights as implemented in OLINDA/EXM. Results: 111In-DOTA-5D3 was synthesized with specific activity of approximately 2.24 ± 0.74 MBq/μg (60.54 ± 20 μCi/μg). Distribution of 111In-DOTA-5D3 in PSMA(+) PC3 PIP tumor peaked at 24 h after injection and remained high until 72 h. Uptake in normal tissues, including the blood, spleen, liver, heart, and lungs, was highest at 2 h after injection. Coinjection of 111In-DOTA-5D3 with a 10- and 50-fold excess of nonradiolabeled antibody significantly reduced PSMA(+) PC3 PIP tumor and salivary gland uptake at 24 h but did not reduce uptake in kidneys and lacrimal glands. Significant clearance of 111In-DOTA-5D3 from all organs occurred at 192 h. The highest radiation dose was received by the liver (0.5 mGy/MBq), followed by the spleen and kidneys. Absorbed radiation doses to the salivary and lacrimal glands and bone marrow were low. Conclusion: 111In-DOTA-5D3 is a new radiolabeled antibody for imaging and a surrogate for therapy of malignant tissues expressing PSMA.
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Affiliation(s)
- Sangeeta Ray Banerjee
- Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, Baltimore, Maryland; and
| | - Vivek Kumar
- Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, Baltimore, Maryland; and
| | - Ala Lisok
- Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, Baltimore, Maryland; and
| | - Donika Plyku
- Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, Baltimore, Maryland; and
| | - Zora Nováková
- Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Vestec, Czech Republic
| | - Mary Brummet
- Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, Baltimore, Maryland; and
| | - Bryan Wharram
- Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, Baltimore, Maryland; and
| | - Cyril Barinka
- Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Vestec, Czech Republic
| | - Robert Hobbs
- Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, Baltimore, Maryland; and
| | - Martin G Pomper
- Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, Baltimore, Maryland; and
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99883
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Li Y, Tian J, Yang C, Hsiao BS. Nanocomposite Film Containing Fibrous Cellulose Scaffold and Ag/TiO₂ Nanoparticles and Its Antibacterial Activity. Polymers (Basel) 2018; 10:E1052. [PMID: 30960977 PMCID: PMC6404018 DOI: 10.3390/polym10101052] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 09/12/2018] [Accepted: 09/19/2018] [Indexed: 11/16/2022] Open
Abstract
Cellulose is a natural polymer that is widely used in daily life, but it is susceptible to microorganism growth. In this study, a simple sol⁻gel technique was utilized to incorporate the cellulose scaffold with Ag/TiO₂ nanoparticles. The morphology and crystal structure of the as-prepared Ag/TiO₂/cellulose composite film were characterized using scanning electron microscopy (SEM) and X-ray diffraction (XRD) methods. Antibacterial tests involving the use of Escherichia coli (E. coli) were carried out under dark and UV-light conditions to evaluate the efficiency of the Ag/TiO₂/cellulose composite film in comparison with pristine cellulose paper and TiO₂/cellulose composite film. The results indicated that the antibacterial activity of the Ag/TiO₂/cellulose composite film outperformed all other samples, where the Ag content of 0.030 wt% could inhibit more than 99% of E. coli. This study suggests that finely dispersed nanocale Ag/TiO₂ particles in the cellulose scaffold were effective at slowing down bacterial growth, and the mechanisms of this are also discussed.
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Affiliation(s)
- Yanxiang Li
- Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
| | - Jessica Tian
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
| | - Chuanfang Yang
- Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
| | - Benjamin S Hsiao
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
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99884
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Dai L, Yang S, Wei Y, Sun C, McClements DJ, Mao L, Gao Y. Development of stable high internal phase emulsions by pickering stabilization: Utilization of zein-propylene glycol alginate-rhamnolipid complex particles as colloidal emulsifiers. Food Chem 2018; 275:246-254. [PMID: 30724194 DOI: 10.1016/j.foodchem.2018.09.122] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 09/18/2018] [Accepted: 09/19/2018] [Indexed: 10/28/2022]
Abstract
In this study, zein-propylene glycol alginate-rhamnolipid complex particles were prepared with suitable three-phase contact angles (θ) for stabilizing oil-in-water Pickering high internal phase emulsions (HIPEs). At a fixed oil phase volume (φ = 0.75), particle concentration influenced the stability, physical properties, and rheology of HIPEs. Confocal laser scanning microscopy showed that complex particles formed a densely packed particle layer around the oil droplets and a three-dimensional network in the continuous phase, highlighting the potential for the complex particles to act as effective HIPE stabilizers. The storage modulus (G') was higher than loss modulus (G″) over the entire angular frequency range, suggesting HIPEs had an elastic gel-like structure. The HIPEs had good stability across a range of environmental conditions (pH, temperatures and salt concentrations). These findings may extend the application of zein in foods and the HIPEs formed may be used as novel delivery system for bioactives.
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Affiliation(s)
- Lei Dai
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Laboratory for Food Quality and Safety, Beijing Key Laboratory of Functional Food from Plant Resources, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, PR China
| | - Shufang Yang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Laboratory for Food Quality and Safety, Beijing Key Laboratory of Functional Food from Plant Resources, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, PR China
| | - Yang Wei
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Laboratory for Food Quality and Safety, Beijing Key Laboratory of Functional Food from Plant Resources, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, PR China
| | - Cuixia Sun
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Laboratory for Food Quality and Safety, Beijing Key Laboratory of Functional Food from Plant Resources, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, PR China
| | | | - Like Mao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Laboratory for Food Quality and Safety, Beijing Key Laboratory of Functional Food from Plant Resources, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, PR China
| | - Yanxiang Gao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Laboratory for Food Quality and Safety, Beijing Key Laboratory of Functional Food from Plant Resources, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, PR China.
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99885
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Guo X, Choi B, Feng A, Thang SH. Polymer Synthesis with More Than One Form of Living Polymerization Method. Macromol Rapid Commun 2018; 39:e1800479. [DOI: 10.1002/marc.201800479] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 08/23/2018] [Indexed: 12/31/2022]
Affiliation(s)
- Xiaofeng Guo
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Material Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Bonnie Choi
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Material Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Anchao Feng
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Material Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - San H. Thang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Material Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
- School of Chemistry; Monash University; Clayton Campus VIC 3800 Australia
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99886
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Isa ILM, Günay B, Joyce K, Pandit A. Tissue Engineering: Biomaterials for Disc Repair. ACTA ACUST UNITED AC 2018. [DOI: 10.1007/s40610-018-0106-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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99887
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Raghuwanshi VS, Cohen Y, Garnier G, Garvey CJ, Russell RA, Darwish T, Garnier G. Cellulose Dissolution in Ionic Liquid: Ion Binding Revealed by Neutron Scattering. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01425] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Vikram Singh Raghuwanshi
- Bioresource Processing Research Institute of Australia (BioPRIA), Department of Chemical Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Yachin Cohen
- Department of Chemical Engineering, Technion-Israel Institute of Technology, Haifa 3200003, Israel
| | - Guillaume Garnier
- Bioresource Processing Research Institute of Australia (BioPRIA), Department of Chemical Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Christopher J. Garvey
- Australian Nuclear Science and Technology Organisation (ANSTO), New Illawarra Rd., Lucas Heights, NSW 2234, Australia
| | - Robert A. Russell
- Australian Nuclear Science and Technology Organisation (ANSTO), New Illawarra Rd., Lucas Heights, NSW 2234, Australia
| | - Tamim Darwish
- Australian Nuclear Science and Technology Organisation (ANSTO), New Illawarra Rd., Lucas Heights, NSW 2234, Australia
| | - Gil Garnier
- Bioresource Processing Research Institute of Australia (BioPRIA), Department of Chemical Engineering, Monash University, Clayton, Victoria 3800, Australia
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99888
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Casanellas I, García-Lizarribar A, Lagunas A, Samitier J. Producing 3D Biomimetic Nanomaterials for Musculoskeletal System Regeneration. Front Bioeng Biotechnol 2018; 6:128. [PMID: 30294596 PMCID: PMC6159749 DOI: 10.3389/fbioe.2018.00128] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 08/29/2018] [Indexed: 12/21/2022] Open
Abstract
The human musculoskeletal system is comprised mainly of connective tissues such as cartilage, tendon, ligaments, skeletal muscle, and skeletal bone. These tissues support the structure of the body, hold and protect the organs, and are responsible of movement. Since it is subjected to continuous strain, the musculoskeletal system is prone to injury by excessive loading forces or aging, whereas currently available treatments are usually invasive and not always effective. Most of the musculoskeletal injuries require surgical intervention facing a limited post-surgery tissue regeneration, especially for widespread lesions. Therefore, many tissue engineering approaches have been developed tackling musculoskeletal tissue regeneration. Materials are designed to meet the chemical and mechanical requirements of the native tissue three-dimensional (3D) environment, thus facilitating implant integration while providing a good reabsorption rate. With biological systems operating at the nanoscale, nanoengineered materials have been developed to support and promote regeneration at the interprotein communication level. Such materials call for a great precision and architectural control in the production process fostering the development of new fabrication techniques. In this mini review, we would like to summarize the most recent advances in 3D nanoengineered biomaterials for musculoskeletal tissue regeneration, with especial emphasis on the different techniques used to produce them.
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Affiliation(s)
- Ignasi Casanellas
- Nanobioengineering Group, Institute for Bioengineering of Catalonia, The Barcelona Institute of Science and Technology, Barcelona, Spain
- Department of Electronics and Biomedical Engineering, University of Barcelona, Barcelona, Spain
| | - Andrea García-Lizarribar
- Nanobioengineering Group, Institute for Bioengineering of Catalonia, The Barcelona Institute of Science and Technology, Barcelona, Spain
- Department of Electronics and Biomedical Engineering, University of Barcelona, Barcelona, Spain
| | - Anna Lagunas
- Nanobioengineering Group, Institute for Bioengineering of Catalonia, The Barcelona Institute of Science and Technology, Barcelona, Spain
- Networking Biomedical Research Center (CIBER), Madrid, Spain
| | - Josep Samitier
- Nanobioengineering Group, Institute for Bioengineering of Catalonia, The Barcelona Institute of Science and Technology, Barcelona, Spain
- Department of Electronics and Biomedical Engineering, University of Barcelona, Barcelona, Spain
- Networking Biomedical Research Center (CIBER), Madrid, Spain
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99889
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Yan S, Xu K, Li L, Gu W, Rolfe BE, Xu ZP. The Pathways for Layered Double Hydroxide Nanoparticles to Enhance Antigen (Cross)-Presentation on Immune Cells as Adjuvants for Protein Vaccines. Front Pharmacol 2018; 9:1060. [PMID: 30294273 PMCID: PMC6158326 DOI: 10.3389/fphar.2018.01060] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 09/03/2018] [Indexed: 11/13/2022] Open
Abstract
Nanoparticles (NPs) are intensively investigated as adjuvants in new generation vaccines, while how these NPs promote the immune responses has not been well understood. In this research, we have tried to elucidate the possible pathways for layered double hydroxide (LDH) NPs to provoke immune responses. As previously reported, LDH NPs efficiently deliver antigens to antigen presenting cells (APCs). In this research, we have found that these internalized LDH NPs are not released by these APCs within 8 h. We have for the first time found that macrophage cells exchange the internalized LDH NPs with other surrounding ones, which may promote immune responses in an additional way. Moreover, the internalized LDH-antigen NPs significantly facilitate the maturation of immature DCs and enhance cross-presentation of epitope/MHC class I complexes on the DC surface. This research would help understand the NP adjuvant mechanism and further assist the design of new specific NPs as more efficient nano-adjuvants.
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Affiliation(s)
- Shiyu Yan
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, Australia
| | - Kewei Xu
- School of Medicine, The University of Queensland, Brisbane, QLD, Australia
| | - Li Li
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, Australia
| | - Wenyi Gu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, Australia
| | - Barbara E. Rolfe
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, Australia
| | - Zhi P. Xu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, Australia
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99890
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Jelkmann M, Menzel C, Baus RA, Ausserhofer P, Baecker D, Gust R, Bernkop-Schnürch A. Chitosan: The One and Only? Aminated Cellulose as an Innovative Option for Primary Amino Groups Containing Polymers. Biomacromolecules 2018; 19:4059-4067. [PMID: 30192522 DOI: 10.1021/acs.biomac.8b01069] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The aim of this study was the synthesis and in vitro characterization of aminated cellulose as alternative excipient to chitosan. The aldehyde form of cellulose was generated via the oxidative cleavage of vicinal diols by the addition of increasing concentrations of sodium periodate. The insertion of primary amines was achieved by reductive amination with ammonia. The degree of substitution was calculated via primary amino group quantification using a 2,4,6-trinitrobenzenesulfonic acid assay. Mucoadhesiveness was examined by adopting the rotating-cylinder method and tensile studies using porcine intestinal mucosa. Hydration was evaluated at pH 2-11. The successful formation of aldehydes as well as a subsequent introduction of up to 311.61 micromoles per gram of primary amines were proven to correlate with the amount of added periodate. There was a 3- to 14-fold prolongation in the mucosal residence time of the new polymer in comparison to chitosan, as measured by the rotating-cylinder method. Although cationic cellulose did not reach the maximum detachment force of chitosan, the total work of adhesion of the newly synthesized cellulose derivate was higher than that of chitosan. The higher the degree of amination, the higher the degree of hydration in neutral and alkaline aqueous media was. Compared to chitosan, the novel cationic cellulose derivative displays improved mucoadhesive properties as well as sufficient hydration at physiological pH. Therefore, aminated cellulose is a promising alternative to the cationic polymers, such as chitosan, used thus far.
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99891
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Surface functionalization of halloysite nanotubes with supermagnetic iron oxide, chitosan and 2-D calcium-phosphate nanoflakes for synergistic osteoconduction enhancement of human adipose tissue-derived mesenchymal stem cells. Colloids Surf B Biointerfaces 2018; 173:18-26. [PMID: 30261345 DOI: 10.1016/j.colsurfb.2018.09.045] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 08/19/2018] [Accepted: 09/19/2018] [Indexed: 01/23/2023]
Abstract
Halloysite nanotubes (HNTs) are known to be the highly emerging materials in nano-medicinal applications. However, comprehensive exploitation of HNTs for the regenerative medicinal applications is still necessary to be done. Therefore, towards enhancing the osteogenic potential of human adipose tissue-derived mesenchymal stem cells (hADMSCs), this study synthesized a novel and multifunctional nanoscaffold of chitosan (CTs) functionalized supermagnetic halloysite nanotubes (M-HNTs) decorated with the calcium phosphate 2-D nanoflakes (CaP) (termed as; M-HNTs-CTs-CaP). Stepwise modified nanoscaffolds were characterized by FE-SEM, FE-SEM-EDS, FE-HR-TEM, XPS, FT-IR and VSM analyses. The hADMSCs osteogenic potential was confirmed by calcification (Alizarin Red S staining), phosphate quantification and immunocytochemistry. Nanoscaffolds; CaP, M-HNTs-CaP and M-HNTs-CTs-CaP were significantly enhanced and up-regulated osteogenic potential compared to the HNTs, M-HNTs, M-HNTs-CTs. Among the nanoscaffolds studied, M-HNTs-CTs-CaP exhibited highest osteogenesis, due to the enhanced CaP distribution on M-HNTs-CTs surface, and synergistic osteoconduction contributed from Fe3O4, chitosan and CaP. Moreover, immunocytochemistry analysis and morphologically observation showed well differentiated osteoblast on the M-HNTs-CTs-CaP surface. Therefore, M-HNTs-CTs-CaP found to have a strong osteogenic potential of hADMSCs, and might be serve as highly applicable, next generation nanoscaffold for bone tissue engineering application.
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99892
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Sun P, Li Z, Wang J, Gao H, Yang X, Wu S, Liu D, Chen Q. Transcellular delivery of messenger RNA payloads by a cationic supramolecular MOF platform. Chem Commun (Camb) 2018; 54:11304-11307. [PMID: 30234872 DOI: 10.1039/c8cc07047d] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A supramolecular catiomer with a metal-organic framework (MOF) motif was developed to manufacture messenger RNA (mRNA) assemblies. In contrast to the linear catiomer, the dendritic MOF catiomer appeared to markedly improve the colloidal stability of the mRNA assemblies, particularly affording substantial protection to the mRNA payloads from enzymatic degradation, eventually conducing to appreciable mRNA transfection activities at the targeted cells.
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Affiliation(s)
- Peng Sun
- School of Life Science and Biotechnology, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China.
| | - Zhen Li
- College of Pharmacy, Dalian Medical University, No. 9 West Section Lvshun South Road, Dalian 116044, China
| | - Jingyun Wang
- School of Life Science and Biotechnology, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China.
| | - Hui Gao
- School of Chemistry and Chemical Engineering, Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, Tianjin University of Technology, Tianjin 300384, China
| | - Xi Yang
- Department of Neurosurgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, No. 1630 Dongfang Road, Shanghai 200127, China
| | - Sudong Wu
- Ningbo Institute of Materials Technology and Engineering, China Academy of Sciences, Ningbo 315201, China
| | - Deqiang Liu
- The No. 2 People's Hospital of Tongxiang, No. 18 Qingyangdong Road, Congfu Town, Tongxiang 314511, China
| | - Qixian Chen
- School of Life Science and Biotechnology, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China.
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99893
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Lyubimov I, Wessels MG, Jayaraman A. Molecular Dynamics Simulation and PRISM Theory Study of Assembly in Solutions of Amphiphilic Bottlebrush Block Copolymers. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01535] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ivan Lyubimov
- Department of Chemical and Biomolecular Engineering, 150 Academy Street, Colburn Laboratory, Newark, Delaware 19716, United States
| | - Michiel G. Wessels
- Department of Chemical and Biomolecular Engineering, 150 Academy Street, Colburn Laboratory, Newark, Delaware 19716, United States
| | - Arthi Jayaraman
- Department of Chemical and Biomolecular Engineering, 150 Academy Street, Colburn Laboratory, Newark, Delaware 19716, United States
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States
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99894
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Yang J, Li Y, Zhu L, Qin G, Chen Q. Double network hydrogels with controlled shape deformation: A mini review. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/polb.24735] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jia Yang
- School of Materials Science and Engineering; Henan Polytechnic University; Jiaozuo 454003 China
| | - Yu Li
- School of Materials Science and Engineering; Henan Polytechnic University; Jiaozuo 454003 China
| | - Lin Zhu
- School of Materials Science and Engineering; Henan Polytechnic University; Jiaozuo 454003 China
| | - Gang Qin
- School of Materials Science and Engineering; Henan Polytechnic University; Jiaozuo 454003 China
| | - Qiang Chen
- School of Materials Science and Engineering; Henan Polytechnic University; Jiaozuo 454003 China
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99895
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ŞAHİN YM. Synthesis of an Antimicrobial Thioanthraquinone Compound to Produce Biodegradable Electrospun Mats for Tissue Engineering Purposes. JOURNAL OF THE TURKISH CHEMICAL SOCIETY, SECTION A: CHEMISTRY 2018. [DOI: 10.18596/jotcsa.422255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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99896
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Jayasinghe‐Arachchige VM, Hu Q, Sharma G, Paul TJ, Lundberg M, Quinonero D, Parac‐Vogt TN, Prabhakar R. Hydrolysis of chemically distinct sites of human serum albumin by polyoxometalate: A hybrid QM/MM (ONIOM) study. J Comput Chem 2018; 40:51-61. [DOI: 10.1002/jcc.25528] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 06/22/2018] [Accepted: 06/23/2018] [Indexed: 12/28/2022]
Affiliation(s)
| | - Qiaoyu Hu
- Department of Chemistry University of Miami Coral Gables Florida 33146
| | - Gaurav Sharma
- Department of Chemistry University of Miami Coral Gables Florida 33146
| | - Thomas J. Paul
- Department of Chemistry University of Miami Coral Gables Florida 33146
| | - Marcus Lundberg
- Department of Chemistry ‐ Ångström Laboratory Uppsala University 751 21, Uppsala Sweden
| | - David Quinonero
- Department of Chemistry Universitat de les Illes Balears Palma de Mallorca Spain
| | | | - Rajeev Prabhakar
- Department of Chemistry University of Miami Coral Gables Florida 33146
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99897
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Dey C, Ghosh A, Ahir M, Ghosh A, Goswami MM. Improvement of Anticancer Drug Release by Cobalt Ferrite Magnetic Nanoparticles through Combined pH and Temperature Responsive Technique. Chemphyschem 2018; 19:2872-2878. [PMID: 30133086 DOI: 10.1002/cphc.201800535] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Indexed: 12/18/2022]
Abstract
This work reports the application possibilities of cobalt ferrite (CoFe2 O4 ) magnetic nanoparticles (CFMNPs) for stimuli responsive drug delivery by magnetic field induced hyperthermia technique. The CFMNPs were characterized by X-ray diffraction (XRD) with Rietveld analysis, field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED), fourier transform infrared spectroscopy (FTIR), thermogravimetry and differential thermal analysis (TG-DTA), vibrating sample magnetometer (VSM) and superconducting quantum interference device (SQUID) magnetometry. Particles were functionalized with folic acid (FA) by EDC-NHS coupling method and loaded with anticancer drug (DOX) by activated folate ions. The drug release was studied as a function of time at two different temperatures (37 and 44 °C) under pH∼5.5 and 7. It was observed that the drug release rate is higher at elevated temperature (44 °C) and acidic pH∼5.5 as compared to our normal body temperature and pH∼7 using the CFMNPs. This way, we have developed a pH and temperature sensitive drug delivery system, which can release the anticancer drug selectively by applying ac magnetic field as under ac field particles are heated up. We have calculated the amount of heat generation by the particles around 1.67 °C per second at ∼600 Hz frequency. By MTT assay on cancer cell and normal cell, it was confirmed that CFMNPs are nontoxic and biocompatible in nature, which assures that our synthesized particles can be successfully used in localized cancer treatment by stimuli responsive drug delivery technique.
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Affiliation(s)
- Chaitali Dey
- Centre for Research in Nanoscience & Nanotechnology, University of Calcutta, Block-JD-2, Sector-III, Salt Lake, Kolkata-, 700106
| | - Arup Ghosh
- Department of Physics, National University of Singapore, 2 Science Drive 3, Blk S12, Singapore, 117551
| | - Manisha Ahir
- Centre for Research in Nanoscience & Nanotechnology, University of Calcutta, Block-JD-2, Sector-III, Salt Lake, Kolkata-, 700106
| | - Ajay Ghosh
- Department of Applied Optics and Photonics, University of Calcutta, Block-JD-2, Sector-III, Salt Lake, Kolkata-, 700106
| | - Madhuri Mandal Goswami
- Centre for Research in Nanoscience & Nanotechnology, University of Calcutta, Block-JD-2, Sector-III, Salt Lake, Kolkata-, 700106.,S.N. Bose National Centre for Basic Sciences, Block-JD, Sector-III, Salt Lake, Kolkata-, 700106
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99898
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Janis B, Belott C, Menze MA. Role of Intrinsic Disorder in Animal Desiccation Tolerance. Proteomics 2018; 18:e1800067. [DOI: 10.1002/pmic.201800067] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 08/10/2018] [Indexed: 11/12/2022]
Affiliation(s)
- Brett Janis
- Department of Biology University of Louisville Louisville KY 40292 USA
| | - Clinton Belott
- Department of Biology University of Louisville Louisville KY 40292 USA
| | - Michael A. Menze
- Department of Biology University of Louisville Louisville KY 40292 USA
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99899
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Wang X, Liu C. Fibrin Hydrogels for Endothelialized Liver Tissue Engineering with a Predesigned Vascular Network. Polymers (Basel) 2018; 10:E1048. [PMID: 30960973 PMCID: PMC6403613 DOI: 10.3390/polym10101048] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 09/04/2018] [Accepted: 09/18/2018] [Indexed: 12/13/2022] Open
Abstract
The design and manufacture of a branched vascular network is essential for bioartificial organ implantation, which provides nutrients and removes metabolites for multi-cellular tissues. In the present study, we present a technology to manufacture endothelialized liver tissues using a fibrin hydrogel and a rotational combined mold. Both hepatocytes and adipose-derived stem cells (ADSCs) encapsulated in a fibrin hydrogel were assembled into a spindle construct with a predesigned multi-branched vascular network. An external overcoat of poly(dl-lactic-co-glycolic acid) was used to increase the mechanical properties of the construct as well as to act as an impervious and isolating membrane around the construct. Cell survivability reached 100% in the construct after 6 days of in vitro culture. ADSCs in the spindle construct were engaged into endothelial cells/tissues using a cocktail growth factor engagement approach. Mechanical property comparison and permeability evaluation tests all indicated that this was a viable complex organ containing more than two heterogeneous tissue types and a functional vascular network. It is, therefore, the first time an implantable bioartificial liver, i.e., endothelialized liver tissue, along with a hierarchical vascular network, has been created.
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Affiliation(s)
- Xiaohong Wang
- Department of Tissue Engineering, Center of 3D Printing & Organ Manufacturing, School of Fundamental Sciences, China Medical University (CMU), No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China.
- Center of Organ Manufacturing, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China.
| | - Chang Liu
- Tianjin Mifang Science & Technology Ltd., Wuqing 301701, China.
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99900
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Wang D, Cheng W, Yue Y, Xuan L, Ni X, Han G. Electrospun Cellulose Nanocrystals/Chitosan/Polyvinyl Alcohol Nanofibrous Films and their Exploration to Metal Ions Adsorption. Polymers (Basel) 2018; 10:E1046. [PMID: 30960971 PMCID: PMC6403982 DOI: 10.3390/polym10101046] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 09/14/2018] [Accepted: 09/16/2018] [Indexed: 11/16/2022] Open
Abstract
Cellulose nanocrystals/chitosan/polyvinyl alcohol (CNC/CS/PVA) composite nanofibrous films were prepared while using an electrospinning technique and successfully thiol-functionalized. Then, the modified films were used for the sorption-desorption of Cu(II) and Pb(II) ions. Subsequently, the adsorption capacity of the films was investigated by changing the CNC loading level, solution pH, and adsorption time. Results showed that the adsorption of metal ions by the films was the best with CNC loading level of 5 wt %, pH of 6, and adsorption time of 4 h. The adsorption behavior of the films was agreed with the Freundlich model. The adsorption equation of metal ions could be described while using a pseudo-second order model. Based on the Langmuir model, the maximum adsorption capacities of Cu(II) and Pb(II) ions were estimated to be 484.06 and 323.49 mg/g, respectively. The Cu(II) and Pb(II) ions adsorption efficiencies of the films after 4 adsorption-desorption cycles were 90.58% and 90.21%, respectively. This study may provide a feasible approach for the application of functional CNC/CS/PVA nanofibrous films in the treatment of water.
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Affiliation(s)
- Dong Wang
- Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), Northeast Forestry University, 26 Hexing Road, Harbin 150040, China; (D.W.); (W.C.); (L.X.); (X.N.)
| | - Wanli Cheng
- Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), Northeast Forestry University, 26 Hexing Road, Harbin 150040, China; (D.W.); (W.C.); (L.X.); (X.N.)
| | - Yiying Yue
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China;
| | - Lihui Xuan
- Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), Northeast Forestry University, 26 Hexing Road, Harbin 150040, China; (D.W.); (W.C.); (L.X.); (X.N.)
| | - Xiaohui Ni
- Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), Northeast Forestry University, 26 Hexing Road, Harbin 150040, China; (D.W.); (W.C.); (L.X.); (X.N.)
| | - Guangping Han
- Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), Northeast Forestry University, 26 Hexing Road, Harbin 150040, China; (D.W.); (W.C.); (L.X.); (X.N.)
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