1
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Augustine A, Qian J, Faraone T, Kolagatla S, Prochukhan N, Morris MA, Bradley AL, Florea L, Delaney C. Direct Laser Writing of Silica Nanoparticle Nanocomposites: Probing Mechanical Reinforcement and Understanding Structural Color from Design Parameters. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2310058. [PMID: 38441362 DOI: 10.1002/smll.202310058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 02/05/2024] [Indexed: 07/26/2024]
Abstract
Nanocomposite materials have been thoroughly exploited in additive manufacturing, as a means to alter physical, chemical, and optical properties of resulting structures. Herein, nanocomposite materials suitable for direct laser writing (DLW) by two-photon polymerization are presented. These materials, comprising silica nanoparticles, bring significant added value to the technology through physical reinforcement and controllable photonic properties. Incorporation into acrylate photoresists, via a one-step fabrication process, enables the formation of complex structures with large overhangs. The inclusion of 150 nm silica nanoparticles in DLW photoresists at high concentrations, allows for the fabrication of composite microstructures that show reflected color, a product of the relative contributions from the quasi-ordering and random scattering. Using common DLW design parameters, such as slicing distance and structure dimension, a wide gamut of structural color, in solution, using a set concentration of nanoparticles is demonstrated. Numerical modeling is employed to predict the reflected wavelength of the pixel arrays, across the visible spectrum, and this information is used to encode reflected colors into different pixel arrays.
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Affiliation(s)
- Amrutha Augustine
- School of Chemistry & AMBER, The SFI Research Centre for Advanced Materials and BioEngineering Research, Trinity College Dublin, Dublin, D02PN40, Ireland
| | - Jing Qian
- School of Physics and AMBER, The SFI Research Centre for Advanced Materials and BioEngineering Research, Trinity College Dublin, Dublin, D02PN40, Ireland
| | - Teodora Faraone
- School of Chemistry & AMBER, The SFI Research Centre for Advanced Materials and BioEngineering Research, Trinity College Dublin, Dublin, D02PN40, Ireland
| | - Srikanth Kolagatla
- School of Chemistry & AMBER, The SFI Research Centre for Advanced Materials and BioEngineering Research, Trinity College Dublin, Dublin, D02PN40, Ireland
| | - Nadezda Prochukhan
- School of Chemistry & AMBER, The SFI Research Centre for Advanced Materials and BioEngineering Research, Trinity College Dublin, Dublin, D02PN40, Ireland
| | - Michael A Morris
- School of Chemistry & AMBER, The SFI Research Centre for Advanced Materials and BioEngineering Research, Trinity College Dublin, Dublin, D02PN40, Ireland
| | - A Louise Bradley
- School of Physics and AMBER, The SFI Research Centre for Advanced Materials and BioEngineering Research, Trinity College Dublin, Dublin, D02PN40, Ireland
| | - Larisa Florea
- School of Chemistry & AMBER, The SFI Research Centre for Advanced Materials and BioEngineering Research, Trinity College Dublin, Dublin, D02PN40, Ireland
| | - Colm Delaney
- School of Chemistry & AMBER, The SFI Research Centre for Advanced Materials and BioEngineering Research, Trinity College Dublin, Dublin, D02PN40, Ireland
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2
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Ricotti L, Cafarelli A, Manferdini C, Trucco D, Vannozzi L, Gabusi E, Fontana F, Dolzani P, Saleh Y, Lenzi E, Columbaro M, Piazzi M, Bertacchini J, Aliperta A, Cain M, Gemmi M, Parlanti P, Jost C, Fedutik Y, Nessim GD, Telkhozhayeva M, Teblum E, Dumont E, Delbaldo C, Codispoti G, Martini L, Tschon M, Fini M, Lisignoli G. Ultrasound Stimulation of Piezoelectric Nanocomposite Hydrogels Boosts Chondrogenic Differentiation in Vitro, in Both a Normal and Inflammatory Milieu. ACS NANO 2024; 18:2047-2065. [PMID: 38166155 PMCID: PMC10811754 DOI: 10.1021/acsnano.3c08738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 12/11/2023] [Accepted: 12/14/2023] [Indexed: 01/04/2024]
Abstract
The use of piezoelectric nanomaterials combined with ultrasound stimulation is emerging as a promising approach for wirelessly triggering the regeneration of different tissue types. However, it has never been explored for boosting chondrogenesis. Furthermore, the ultrasound stimulation parameters used are often not adequately controlled. In this study, we show that adipose-tissue-derived mesenchymal stromal cells embedded in a nanocomposite hydrogel containing piezoelectric barium titanate nanoparticles and graphene oxide nanoflakes and stimulated with ultrasound waves with precisely controlled parameters (1 MHz and 250 mW/cm2, for 5 min once every 2 days for 10 days) dramatically boost chondrogenic cell commitment in vitro. Moreover, fibrotic and catabolic factors are strongly down-modulated: proteomic analyses reveal that such stimulation influences biological processes involved in cytoskeleton and extracellular matrix organization, collagen fibril organization, and metabolic processes. The optimal stimulation regimen also has a considerable anti-inflammatory effect and keeps its ability to boost chondrogenesis in vitro, even in an inflammatory milieu. An analytical model to predict the voltage generated by piezoelectric nanoparticles invested by ultrasound waves is proposed, together with a computational tool that takes into consideration nanoparticle clustering within the cell vacuoles and predicts the electric field streamline distribution in the cell cytoplasm. The proposed nanocomposite hydrogel shows good injectability and adhesion to the cartilage tissue ex vivo, as well as excellent biocompatibility in vivo, according to ISO 10993. Future perspectives will involve preclinical testing of this paradigm for cartilage regeneration.
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Affiliation(s)
- Leonardo Ricotti
- The
BioRobotics Institute, Scuola Superiore
Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
- Department
of Excellence in Robotics & AI, Scuola
Superiore Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
| | - Andrea Cafarelli
- The
BioRobotics Institute, Scuola Superiore
Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
- Department
of Excellence in Robotics & AI, Scuola
Superiore Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
| | - Cristina Manferdini
- Laboratorio
di Immunoreumatologia e Rigenerazione Tissutale, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Diego Trucco
- The
BioRobotics Institute, Scuola Superiore
Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
- Department
of Excellence in Robotics & AI, Scuola
Superiore Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
- Laboratorio
di Immunoreumatologia e Rigenerazione Tissutale, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Lorenzo Vannozzi
- The
BioRobotics Institute, Scuola Superiore
Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
- Department
of Excellence in Robotics & AI, Scuola
Superiore Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
| | - Elena Gabusi
- Laboratorio
di Immunoreumatologia e Rigenerazione Tissutale, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Francesco Fontana
- The
BioRobotics Institute, Scuola Superiore
Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
- Department
of Excellence in Robotics & AI, Scuola
Superiore Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
| | - Paolo Dolzani
- Laboratorio
di Immunoreumatologia e Rigenerazione Tissutale, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Yasmin Saleh
- Laboratorio
di Immunoreumatologia e Rigenerazione Tissutale, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Enrico Lenzi
- Laboratorio
di Immunoreumatologia e Rigenerazione Tissutale, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Marta Columbaro
- Piattaforma
di Microscopia Elettronica, IRCCS Istituto
Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Manuela Piazzi
- Istituto
di Genetica Molecolare “Luigi Luca Cavalli-Sforza”, Consiglio Nazionale delle Ricerche (IGM-CNR), 40136 Bologna, Italy
- IRCCS Istituto
Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Jessika Bertacchini
- Department
of Surgery, Medicine, Dentistry and Morphological Sciences with Interest
in Transplant, Oncology and Regenerative Medicine, University of Modena and Reggio Emilia, 41125 Modena, Italy
| | - Andrea Aliperta
- The
BioRobotics Institute, Scuola Superiore
Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
- Department
of Excellence in Robotics & AI, Scuola
Superiore Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
| | - Markys Cain
- Electrosciences
Ltd., Farnham, Surrey GU9 9QT, U.K.
| | - Mauro Gemmi
- Center
for Materials Interfaces, Electron Crystallography, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, 56025 Pontedera, Italy
| | - Paola Parlanti
- Center
for Materials Interfaces, Electron Crystallography, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, 56025 Pontedera, Italy
| | - Carsten Jost
- PlasmaChem
GmbH, Schwarzschildstraße
10, 12489 Berlin, Germany
| | - Yirij Fedutik
- PlasmaChem
GmbH, Schwarzschildstraße
10, 12489 Berlin, Germany
| | - Gilbert Daniel Nessim
- Department
of Chemistry and Institute of Nanotechnology, Bar-Ilan University, Ramat
Gan 52900, Israel
| | - Madina Telkhozhayeva
- Department
of Chemistry and Institute of Nanotechnology, Bar-Ilan University, Ramat
Gan 52900, Israel
| | - Eti Teblum
- Department
of Chemistry and Institute of Nanotechnology, Bar-Ilan University, Ramat
Gan 52900, Israel
| | | | - Chiara Delbaldo
- Struttura
Complessa Scienze e Tecnologie Chirurgiche, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy
| | - Giorgia Codispoti
- Struttura
Complessa Scienze e Tecnologie Chirurgiche, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy
| | - Lucia Martini
- Struttura
Complessa Scienze e Tecnologie Chirurgiche, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy
| | - Matilde Tschon
- Struttura
Complessa Scienze e Tecnologie Chirurgiche, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy
| | - Milena Fini
- Scientific Director, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Gina Lisignoli
- Laboratorio
di Immunoreumatologia e Rigenerazione Tissutale, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
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3
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Bakshi S, Pandey P, Mohammed Y, Wang J, Sailor MJ, Popat A, Parekh HS, Kumeria T. Porous silicon embedded in a thermoresponsive hydrogel for intranasal delivery of lipophilic drugs to treat rhinosinusitis. J Control Release 2023; 363:452-463. [PMID: 37769816 DOI: 10.1016/j.jconrel.2023.09.045] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 09/09/2023] [Accepted: 09/25/2023] [Indexed: 10/03/2023]
Abstract
Intranasal delivery is the most preferred route of drug administration for treatment of a range of nasal conditions including chronic rhinosinusitis (CRS), caused by an infection and inflammation of the nasal mucosa. However, localised delivery of lipophilic drugs for persistent nasal inflammation is a challenge especially with traditional topical nasal sprays. In this study, a composite thermoresponsive hydrogel is developed and tuned to obtain desired rheological and physiochemical properties suitable for intranasal administration of lipophilic drugs. The composite is comprised of drug-loaded porous silicon (pSi) particles embedded in a poloxamer 407 (P407) hydrogel matrix. Mometasone Furoate (MF), a lipophilic corticosteroid (log P of 4.11), is used as the drug, which is loaded onto pSi particles at a loading capacity of 28 wt%. The MF-loaded pSi particles (MF@pSi) are incorporated into the P407-based thermoresponsive hydrogel (HG) matrix to form the composite hydrogel (MF@pSi-HG) with a final drug content ranging between 0.1 wt% to 0.5 wt%. Rheomechanical studies indicate that the MF@pSi component exerts a minimal impact on gelation temperature or strength of the hydrogel host. The in-vitro release of the MF payload from MF@pSi-HG shows a pronounced increase in the amount of drug released over 8 h (4.5 to 21-fold) in comparison to controls consisting of pure MF incorporated in hydrogel (MF@HG), indicating an improvement in kinetic solubility of MF upon loading into pSi. Ex-vivo toxicity studies conducted on human nasal mucosal tissue show no adverse effect from exposure to either pure HG or the MF@pSi-HG formulation, even at the highest drug content of 0.5 wt%. Experiments on human nasal mucosal tissue show the MF@pSi-HG formulation deposits a quantity of MF into the tissues within 8 h that is >19 times greater than the MF@HG control (194 ± 7 μg of MF/g of tissue vs. <10 μg of MF/g of tissue, respectively).
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Affiliation(s)
- Shrishty Bakshi
- School of Pharmacy, The University of Queensland, Queensland 4102, Australia
| | - Preeti Pandey
- School of Pharmacy, The University of Queensland, Queensland 4102, Australia
| | - Yousuf Mohammed
- Therapeutics Research Group, Diamantina Institute, University of Queensland, Brisbane, Queensland 4102, Australia
| | - Joanna Wang
- Department of Radiology, School of Medicine, Stanford University, Stanford, CA 94305, United States of America
| | - Michael J Sailor
- Department of Chemistry and Biochemistry, University of California-San Diego, La Jolla, CA 92093, United States of America
| | - Amirali Popat
- School of Pharmacy, The University of Queensland, Queensland 4102, Australia.
| | - Harendra S Parekh
- School of Pharmacy, The University of Queensland, Queensland 4102, Australia.
| | - Tushar Kumeria
- School of Pharmacy, The University of Queensland, Queensland 4102, Australia; School of Materials Science and Engineering, The University of New South Wales, New South Wales 2052, Australia; Australian Centre for Nanomedicine, The University of New South Wales, New South Wales 2052, Australia.
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4
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Barrett-Catton E, Pedersen K, Mobed-Miremadi M, Asuri P. Modeling the Additive Effects of Nanoparticles and Polymers on Hydrogel Mechanical Properties Using Multifactor Analysis. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4461. [PMID: 36558313 PMCID: PMC9785977 DOI: 10.3390/nano12244461] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/05/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
Interpenetrating networks (IPN)s have been conceived as a biomimetic tool to tune hydrogel mechanical properties to the desired target formulations. In this study, the rheological behavior of acrylamide (AAm) [2.5-10%] hydrogels crosslinked with N,N'-methylenebis(acrylamide) (Bis) [0.0625-0.25%] was characterized in terms of the saturation modulus affected by the interaction of silica nanoparticle (SiNP) nanofillers [0-5%] and dextran [0-2%] at a frequency of 1 Hz and strain rate of 1% after a gelation period of 90 min. For single-network hydrogels, a prominent transition was observed at 0.125% Bis for 2.5% AAm and 0.25% Bis for 5% AAm across the SiNP concentrations and was validated by retrospective 3-level factorial design models, as characterized by deviation from linearity in the saturation region (R2 = 0.86). IPN hydrogels resulting from the addition of dextran to the single network in the pre-saturation region, as outlined by the strong goodness of fit (R2= 0.99), exhibited a correlated increase in the elastic (G') and viscous moduli (G"). While increasing the dextran concentrations [0-2%] and MW [100 kDa and 500 kDa] regulated the increase in G', saturation in G" or the loss tangent (tan(δ)) was not recorded within the observed operating windows. Results of multifactor analysis conducted on Han plots in terms of the elastic gains indicate that amongst the factors modulating the viscoelasticity of the IPN hydrogels, dextran concentration is the most important (RDex = 35.3 dB), followed by nanoparticle concentration (RSiNP = 7.7 dB) and dextran molecular weight (RMW = 2.9 dB). The results demonstrate how the Han plot may be systematically used to quantify the main effects of intensive thermodynamic properties on rheological phase transition in interpenetrating networks where traditional multifactor analyses cannot resolve statistical significance.
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5
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Mohammed AA, Merrild NG, Li S, Pinna A, Jones JR. Double-Network Hydrogels Reinforced with Covalently Bonded Silica Nanoparticles via 1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide Chemistry. ACS OMEGA 2022; 7:43904-43914. [PMID: 36506137 PMCID: PMC9730475 DOI: 10.1021/acsomega.2c05169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 10/20/2022] [Indexed: 06/17/2023]
Abstract
Hydrogels have progressed from single-network materials with low mechanical integrity to double-network hydrogels (DNHGs) with tough, tunable properties. In this work, we introduce a nanocomposite structure into the first network of a DNHG. Amine-functionalized silica nanoparticles (ASNPs) were covalently cross-linked by forming amide bonds through the carboxylic groups of polyacrylic acid (PAAc) in the first network. DNHGs with varying sizes of ASNPs (50, 100, and 150 nm) and varying concentrations (2.5, 10, 20, and 40 wt %) were explored and compared to a control without a nanocomposite structure. Compressive strengths improved from 0.10 MPa for the control to a maximum of 1.28 MPa for the PAAc/PAAm DNHGs. All hydrogels experienced increased resistance to strain with a maximum of 74% compared to 45% for the control. SEM images of freeze-dried gels showed that ASNPs were integrated into the gel mesh. Nanoparticle retention was calculated using thermal gravimetric analysis (TGA) with improved retention values for larger ASNPs. New DNHG composites have been formed with improved mechanical properties and a potential use in tissue engineering and biomaterial applications.
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Affiliation(s)
- Ali A. Mohammed
- Dyson
School of Design Engineering, Imperial College
London, SW7 9EG London, U.K.
- Department
of Materials, Imperial College London, SW7 2AZ London, U.K.
| | | | - Siwei Li
- Department
of Materials, Imperial College London, SW7 2AZ London, U.K.
- Visiting
Specialist Services Academy Ltd, Office 6.072 6th Floor, First Central 200, 2 Lakeside Drive, London NW10 7FQ, U.K.
| | - Alessandra Pinna
- Department
of Materials, Imperial College London, SW7 2AZ London, U.K.
- The
Francis Crick Institute, London NW11AT, U.K.
| | - Julian R. Jones
- Department
of Materials, Imperial College London, SW7 2AZ London, U.K.
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6
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Role of Polymer Concentration and Crosslinking Density on Release Rates of Small Molecule Drugs. Int J Mol Sci 2022; 23:ijms23084118. [PMID: 35456935 PMCID: PMC9028196 DOI: 10.3390/ijms23084118] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/04/2022] [Accepted: 04/06/2022] [Indexed: 02/04/2023] Open
Abstract
Over the past few years, researchers have demonstrated the use of hydrogels to design drug delivery platforms that offer a variety of benefits, including but not limited to longer circulation times, reduced drug degradation, and improved targeting. Furthermore, a variety of strategies have been explored to develop stimulus-responsive hydrogels to design smart drug delivery platforms that can release drugs to specific target areas and at predetermined rates. However, only a few studies have focused on exploring how innate hydrogel properties can be optimized and modulated to tailor drug dosage and release rates. Here, we investigated the individual and combined roles of polymer concentration and crosslinking density (controlled using both chemical and nanoparticle-mediated physical crosslinking) on drug delivery rates. These experiments indicated a strong correlation between the aforementioned hydrogel properties and drug release rates. Importantly, they also revealed the existence of a saturation point in the ability to control drug release rates through a combination of chemical and physical crosslinkers. Collectively, our analyses describe how different hydrogel properties affect drug release rates and lay the foundation to develop drug delivery platforms that can be programmed to release a variety of bioactive payloads at defined rates.
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Sumayya, Gull N, Islam A, Ghaffar A, Jabeen S, Iqbal SS, Khan SM, Khan RU, Hussain N, Bilal M. Development and characterization of chitosan and acrylic acid-based novel biodegradable polymeric films for soil conditioning. Int J Biol Macromol 2021; 182:950-958. [PMID: 33878356 DOI: 10.1016/j.ijbiomac.2021.04.098] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 03/19/2021] [Accepted: 04/16/2021] [Indexed: 01/07/2023]
Abstract
In this study, biodegradable polymeric films (BPFs) based on chitosan and acrylic acid cross-linked with 3-aminopropyl triethoxysilane (APTES) were developed for water retention and soil-conditioning applications in areas sufferings from water scarcity. A series of BPFs were prepared by varying the amount of silica nanoparticles (SiNPs) (0.67% to 2.6%) and a correlation of the optimum amount of SiNPs with thermal stability, morphology, swellability (at various pH), degradability, and anti-microbial activity were deduced. The obtained results showed that the NP 8 (containing 2.51% of SiNPs) exhibited the maximum absorption capacity (1815%) in distilled water, whereas NP6 (including 1.88% of SiNPs) expressed the maximum thermal stability (T50% at 375.61 °C). The microscopic images further strengthen this observation because the maximum number of micro-porous cavities was shown on the surface of NP8. The time-dependent swelling response in distilled water accomplished that hydrophilicity (percentage swelling) of films was enhanced with an increase in the concentration of SiNPs. All BPFs samples exhibited inhibitory response against both gram-positive (for Staphylococcus aureus was 2.9 cm for NP6) and gram-negative (for Escherichia coli was 0.9 cm for NP8) bacteria. The biodegradation test inferred that the degradation of BPFs in soil did not affect the soil fertility as nano-silica is proven as growth-promoting miniatures. It can be concluded that these BPFs may be efficiently employed in the agriculture sector for water retention and as a soil conditioner.
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Affiliation(s)
- Sumayya
- Department of Chemistry, University of Engineering and Technology, Lahore, Pakistan; Institute of Polymer and Textile Engineering, University of the Punjab, Lahore 54590, Pakistan
| | - Nafisa Gull
- Institute of Polymer and Textile Engineering, University of the Punjab, Lahore 54590, Pakistan
| | - Atif Islam
- Institute of Polymer and Textile Engineering, University of the Punjab, Lahore 54590, Pakistan.
| | - Abdul Ghaffar
- Department of Chemistry, University of Engineering and Technology, Lahore, Pakistan
| | - Sehrish Jabeen
- Institute of Polymer and Textile Engineering, University of the Punjab, Lahore 54590, Pakistan
| | - Sadia Sagar Iqbal
- Institute of Polymer and Textile Engineering, University of the Punjab, Lahore 54590, Pakistan
| | - Shahzad Maqsood Khan
- Institute of Polymer and Textile Engineering, University of the Punjab, Lahore 54590, Pakistan
| | - Rafi Ullah Khan
- Institute of Polymer and Textile Engineering, University of the Punjab, Lahore 54590, Pakistan
| | - Nazim Hussain
- Centre for Applied Molecular Biology (CAMB), University of the Punjab, Lahore 53700, Pakistan
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China.
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8
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Barrett-Catton E, Ross ML, Asuri P. Multifunctional Hydrogel Nanocomposites for Biomedical Applications. Polymers (Basel) 2021; 13:856. [PMID: 33799539 PMCID: PMC8001467 DOI: 10.3390/polym13060856] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/05/2021] [Accepted: 03/07/2021] [Indexed: 02/06/2023] Open
Abstract
Hydrogels are used for various biomedical applications due to their biocompatibility, capacity to mimic the extracellular matrix, and ability to encapsulate and deliver cells and therapeutics. However, traditional hydrogels have a few shortcomings, especially regarding their physical properties, thereby limiting their broad applicability. Recently, researchers have investigated the incorporation of nanoparticles (NPs) into hydrogels to improve and add to the physical and biochemical properties of hydrogels. This brief review focuses on papers that describe the use of nanoparticles to improve more than one property of hydrogels. Such multifunctional hydrogel nanocomposites have enhanced potential for various applications including tissue engineering, drug delivery, wound healing, bioprinting, and biowearable devices.
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Affiliation(s)
| | | | - Prashanth Asuri
- Department of Bioengineering, Santa Clara University, Santa Clara, CA 95053, USA; (E.B.-C.); (M.L.R.)
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9
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Chang A, Babhadiashar N, Barrett-Catton E, Asuri P. Role of Nanoparticle-Polymer Interactions on the Development of Double-Network Hydrogel Nanocomposites with High Mechanical Strength. Polymers (Basel) 2020; 12:E470. [PMID: 32085489 PMCID: PMC7077622 DOI: 10.3390/polym12020470] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 02/14/2020] [Accepted: 02/16/2020] [Indexed: 12/23/2022] Open
Abstract
Extensive experimental and theoretical research over the past several decades has pursued strategies to develop hydrogels with high mechanical strength. Our study investigated the effect of combining two approaches, addition of nanoparticles and crosslinking two different polymers (to create double-network hydrogels), on the mechanical properties of hydrogels. Our studies revealed that these orthogonal approaches may be combined to synthesize hydrogel composites with enhanced mechanical properties. However, the enhancement in double network hydrogel elastic modulus due to incorporation of nanoparticles is limited by the ability of the nanoparticles to strongly interact with the polymers in the network. Moreover, double-network hydrogel nanocomposites prepared using lower monomer concentrations showed higher enhancements in elastic moduli compared to those prepared using high monomer concentrations, thus indicating that the concentration of hydrogel monomers used for the preparation of the nanocomposites had a significant effect on the extent of nanoparticle-mediated enhancements. Collectively, these results demonstrate that the hypotheses previously developed to understand the role of nanoparticles on the mechanical properties of hydrogel nanocomposites may be extended to double-network hydrogel systems and guide the development of next-generation hydrogels with extraordinary mechanical properties through a combination of different approaches.
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Affiliation(s)
| | | | | | - Prashanth Asuri
- Department of Bioengineering, Santa Clara University, Santa Clara, CA 95053, USA; (A.C.); (N.B.); (E.B.-C.)
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10
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Arjmandi M, Ramezani M. Mechanical and tribological assessment of silica nanoparticle-alginate-polyacrylamide nanocomposite hydrogels as a cartilage replacement. J Mech Behav Biomed Mater 2019; 95:196-204. [DOI: 10.1016/j.jmbbm.2019.04.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 03/04/2019] [Accepted: 04/11/2019] [Indexed: 12/19/2022]
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11
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Zaragoza J, Fukuoka S, Kraus M, Thomin J, Asuri P. Exploring the Role of Nanoparticles in Enhancing Mechanical Properties of Hydrogel Nanocomposites. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E882. [PMID: 30380606 PMCID: PMC6265757 DOI: 10.3390/nano8110882] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 10/24/2018] [Accepted: 10/25/2018] [Indexed: 12/12/2022]
Abstract
Over the past few decades, research studies have established that the mechanical properties of hydrogels can be largely impacted by the addition of nanoparticles. However, the exact mechanisms behind such enhancements are not yet fully understood. To further explore the role of nanoparticles on the enhanced mechanical properties of hydrogel nanocomposites, we used chemically crosslinked polyacrylamide hydrogels incorporating silica nanoparticles as the model system. Rheological measurements indicate that nanoparticle-mediated increases in hydrogel elastic modulus can exceed the maximum modulus that can be obtained through purely chemical crosslinking. Moreover, the data reveal that nanoparticle, monomer, and chemical crosslinker concentrations can all play an important role on the nanoparticle mediated-enhancements in mechanical properties. These results also demonstrate a strong role for pseudo crosslinking facilitated by polymer⁻particle interactions on the observed enhancements in elastic moduli. Taken together, our work delves into the role of nanoparticles on enhancing hydrogel properties, which is vital to the development of hydrogel nanocomposites with a wide range of specific mechanical properties.
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Affiliation(s)
- Josergio Zaragoza
- Department of Bioengineering, Santa Clara University, Santa Clara, CA 95053, USA.
| | - Scott Fukuoka
- Department of Bioengineering, Santa Clara University, Santa Clara, CA 95053, USA.
| | - Marcus Kraus
- Department of Bioengineering, Santa Clara University, Santa Clara, CA 95053, USA.
| | - James Thomin
- Department of General Sciences, Northwest Florida State College, Niceville, FL 32578, USA.
| | - Prashanth Asuri
- Department of Bioengineering, Santa Clara University, Santa Clara, CA 95053, USA.
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12
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Ochbaum G, Davidovich-Pinhas M, Bitton R. Tuning the mechanical properties of alginate-peptide hydrogels. SOFT MATTER 2018; 14:4364-4373. [PMID: 29781028 DOI: 10.1039/c8sm00059j] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Alginate, a polysaccharide that gels in the presence of divalent ions, has been used in the field of regenerative medicine to facilitate cell growth in impaired tissues by providing an artificial bio-surrounding similar to the natural extra cellular matrix (ECM). Here, we present a systematic investigation of the effect of three arginine-glycine-aspartic acid (RGD)-containing peptides, G6KRGDY, A6KRGDY and V6KRGDY, on the physical properties of alginate-peptide hydrogels. Rheology measurements showed that the storage modulus of the alginate-A6KRGDY and alginate-V6KRGDY gels is an order of magnitude higher than that of the alginate-G6KRGDY gel. Small angle X-ray scattering (SAXS) measurements suggest that the difference in the mechanical properties of the gels is due to the formation of larger peptide junction zones in addition to the ones formed by calcium ions. These findings indicate that the peptides' ability to self-assemble in aqueous solution is a significant factor in tuning the stiffness of the alginate/peptide hybrid hydrogels.
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Affiliation(s)
- Guy Ochbaum
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel.
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13
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High-performance nanocomposites synergistically reinforced by two-dimensional montmorillonite and zero-dimensional nanoTiO2. Polym Bull (Berl) 2018. [DOI: 10.1007/s00289-017-2104-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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14
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Yang Y, Romano M, Feng G, Wang X, Wu T, Holdren S, Zachariah MR. Growth of Sub-5 nm Metal Nanoclusters in Polymer Melt Aerosol Droplets. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:585-594. [PMID: 29249148 DOI: 10.1021/acs.langmuir.7b02900] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Ultrasmall metal nanoparticles are inherently unstable because of their high specific surface area. This work investigates how growth and aggregation of these nanostructures can be circumvented by incorporating them into a polymer matrix in an on-the-fly growth process. We demonstrate the formation of sub-5 nm particles of Ni, Co, and Cu nanoparticles in a polymer matrix using an aerosol single-drop reactor approach. The rapid thermal pulse given to the aerosol particles enables the formation of nuclei and growth, with subsequent rapid quenching to freeze in the structure. The role of the temperature as well as the precursor concentration of the resulting size and morphology is discussed. A characteristic time analysis and an analysis of the particle size distributions lead to the conclusion that growth is governed by nucleation and surface growth, with little coagulation or Ostwald ripening. Finally, we note that this aerosol route is amenable to scale-up for large-scale production of nanoclusters that can either be used as is within the polymer or released by solvent extraction, depending on the application.
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Affiliation(s)
- Yong Yang
- University of Maryland , College Park, Maryland 20742, United States
| | | | - Guangjie Feng
- University of Maryland , College Park, Maryland 20742, United States
| | - Xizheng Wang
- University of Maryland , College Park, Maryland 20742, United States
| | - Tao Wu
- University of Maryland , College Park, Maryland 20742, United States
| | - Scott Holdren
- University of Maryland , College Park, Maryland 20742, United States
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15
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Tang N, Peng Z, Guo R, An M, Chen X, Li X, Yang N, Zang J. Thermal Transport in Soft PAAm Hydrogels. Polymers (Basel) 2017; 9:E688. [PMID: 30965991 PMCID: PMC6418834 DOI: 10.3390/polym9120688] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 11/27/2017] [Accepted: 12/05/2017] [Indexed: 12/31/2022] Open
Abstract
As the interface between human and machine becomes blurred, hydrogel incorporated electronics and devices have emerged to be a new class of flexible/stretchable electronic and ionic devices due to their extraordinary properties, such as softness, mechanically robustness, and biocompatibility. However, heat dissipation in these devices could be a critical issue and remains unexplored. Here, we report the experimental measurements and equilibrium molecular dynamics simulations of thermal conduction in polyacrylamide (PAAm) hydrogels. The thermal conductivity of PAAm hydrogels can be modulated by both the effective crosslinking density and water content in hydrogels. The effective crosslinking density dependent thermal conductivity in hydrogels varies from 0.33 to 0.51 Wm-1K-1, giving a 54% enhancement. We attribute the crosslinking effect to the competition between the increased conduction pathways and the enhanced phonon scattering effect. Moreover, water content can act as filler in polymers which leads to nearly 40% enhancement in thermal conductivity in PAAm hydrogels with water content vary from 23 to 88 wt %. Furthermore, we find the thermal conductivity of PAAm hydrogel is insensitive to temperature in the range of 25⁻40 °C. Our study offers fundamental understanding of thermal transport in soft materials and provides design guidance for hydrogel-based devices.
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Affiliation(s)
- Ni Tang
- School of Optical and Electronic Information, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan 430074, China.
| | - Zhan Peng
- Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan 430074, China.
- Nano Interface Center for Energy, School of Energy and Power Engineering, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan 430074, China.
| | - Rulei Guo
- Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan 430074, China.
- Nano Interface Center for Energy, School of Energy and Power Engineering, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan 430074, China.
| | - Meng An
- Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan 430074, China.
- Nano Interface Center for Energy, School of Energy and Power Engineering, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan 430074, China.
| | - Xiandong Chen
- Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan 430074, China.
- Nano Interface Center for Energy, School of Energy and Power Engineering, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan 430074, China.
| | - Xiaobo Li
- Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan 430074, China.
- Nano Interface Center for Energy, School of Energy and Power Engineering, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan 430074, China.
| | - Nuo Yang
- Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan 430074, China.
- Nano Interface Center for Energy, School of Energy and Power Engineering, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan 430074, China.
| | - Jianfeng Zang
- School of Optical and Electronic Information, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan 430074, China.
- Innovation Institute, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan 430074, China.
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16
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Jing L, Li H, Tay RY, Sun B, Tsang SH, Cometto O, Lin J, Teo EHT, Tok AIY. Biocompatible Hydroxylated Boron Nitride Nanosheets/Poly(vinyl alcohol) Interpenetrating Hydrogels with Enhanced Mechanical and Thermal Responses. ACS NANO 2017; 11:3742-3751. [PMID: 28345866 DOI: 10.1021/acsnano.6b08408] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Poly(vinyl alcohol) (PVA) hydrogels with tissue-like viscoelasticity, excellent biocompatibility, and high hydrophilicity have been considered as promising cartilage replacement materials. However, lack of sufficient mechanical properties is a critical barrier to their use as load-bearing cartilage substitutes. Herein, we report hydroxylated boron nitride nanosheets (OH-BNNS)/PVA interpenetrating hydrogels by cyclically freezing/thawing the aqueous mixture of PVA and highly hydrophilic OH-BNNS (up to 0.6 mg/mL, two times the highest reported so far). Encouragingly, the resulting OH-BNNS/PVA hydrogels exhibit controllable reinforcements in both mechanical and thermal responses by simply varying the OH-BNNS contents. Impressive 45, 43, and 63% increases in compressive, tensile strengths and Young's modulus, respectively, can be obtained even with only 0.12 wt% (OH-BNNS:PVA) OH-BNNS addition. Meanwhile, exciting improvements in the thermal diffusivity (15%) and conductivity (5%) can also be successfully achieved. These enhancements are attributed to the synergistic effect of intrinsic superior properties of the as-prepared OH-BNNS and strong hydrogen bonding interactions between the OH-BNNS and PVA chains. In addition, excellent cytocompatibility of the composite hydrogels was verified by cell proliferation and live/dead viability assays. These biocompatible OH-BNNS/PVA hydrogels are promising in addressing the mechanical failure and locally overheating issues as cartilage substitutes and may also have broad utility for biomedical applications, such as drug delivery, tissue engineering, biosensors, and actuators.
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Affiliation(s)
- Lin Jing
- School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
- Institute for Sports Research, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Hongling Li
- School of Electrical and Electronic Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Roland Yingjie Tay
- School of Electrical and Electronic Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Bo Sun
- Department of Chemical and Biomolecular Engineering, National University of Singapore , Singapore 119260, Singapore
| | - Siu Hon Tsang
- Temasek Laboratories@NTU , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Olivier Cometto
- School of Electrical and Electronic Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Jinjun Lin
- School of Electrical and Electronic Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Edwin Hang Tong Teo
- School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
- School of Electrical and Electronic Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Alfred Iing Yoong Tok
- School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
- Institute for Sports Research, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
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17
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Zaragoza J, Chang A, Asuri P. Effect of crosslinker length on the elastic and compression modulus of poly(acrylamide) nanocomposite hydrogels. ACTA ACUST UNITED AC 2017. [DOI: 10.1088/1742-6596/790/1/012037] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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18
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ElAfandy RT, AbuElela AF, Mishra P, Janjua B, Oubei HM, Büttner U, Majid MA, Ng TK, Merzaban JS, Ooi BS. Nanomembrane-Based, Thermal-Transport Biosensor for Living Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1603080. [PMID: 27879037 DOI: 10.1002/smll.201603080] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 09/29/2016] [Indexed: 05/23/2023]
Abstract
Knowledge of materials' thermal-transport properties, conductivity and diffusivity, is crucial for several applications within areas of biology, material science and engineering. Specifically, a microsized, flexible, biologically integrated thermal transport sensor is beneficial to a plethora of applications, ranging across plants physiological ecology and thermal imaging and treatment of cancerous cells, to thermal dissipation in flexible semiconductors and thermoelectrics. Living cells pose extra challenges, due to their small volumes and irregular curvilinear shapes. Here a novel approach of simultaneously measuring thermal conductivity and diffusivity of different materials and its applicability to single cells is demonstrated. This technique is based on increasing phonon-boundary-scattering rate in nanomembranes, having extremely low flexural rigidities, to induce a considerable spectral dependence of the bandgap-emission over excitation-laser intensity. It is demonstrated that once in contact with organic or inorganic materials, the nanomembranes' emission spectrally shift based on the material's thermal diffusivity and conductivity. This NM-based technique is further applied to differentiate between different types and subtypes of cancer cells, based on their thermal-transport properties. It is anticipated that this novel technique to enable an efficient single-cell thermal targeting, allow better modeling of cellular thermal distribution and enable novel diagnostic techniques based on variations of single-cell thermal-transport properties.
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Affiliation(s)
- Rami T ElAfandy
- Photonics Laboratory, Computer, Electrical and Mathematical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Ayman F AbuElela
- Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Pawan Mishra
- Photonics Laboratory, Computer, Electrical and Mathematical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Bilal Janjua
- Photonics Laboratory, Computer, Electrical and Mathematical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Hassan M Oubei
- Photonics Laboratory, Computer, Electrical and Mathematical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Ulrich Büttner
- Microfluidics Core Lab, Computer, Electrical and Mathematical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Mohammed A Majid
- Photonics Laboratory, Computer, Electrical and Mathematical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Tien Khee Ng
- Photonics Laboratory, Computer, Electrical and Mathematical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Jasmeen S Merzaban
- Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Boon S Ooi
- Photonics Laboratory, Computer, Electrical and Mathematical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
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19
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Wen Y, Li F, Li C, Yin Y, Li J. High mechanical strength chitosan-based hydrogels cross-linked with poly(ethylene glycol)/polycaprolactone micelles for the controlled release of drugs/growth factors. J Mater Chem B 2017; 5:961-971. [DOI: 10.1039/c6tb02201d] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Novel chitosan-based hydrogels crosslinked with PECL micelles with high mechanical strength for the controlled release of drugs/growth factors.
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Affiliation(s)
- Yan Wen
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- China
- School of Science
| | - Fan Li
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- China
| | - Chunge Li
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- China
| | - Yuji Yin
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- China
| | - Junjie Li
- Department of Advanced Interdisciplinary Studies
- Institute of BasicMedical Sciences and Tissue Engineering Research Center
- Academy of Military Medical Sciences
- No. 27
- Beijing
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20
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Fiorini F, Prasetyanto EA, Taraballi F, Pandolfi L, Monroy F, López-Montero I, Tasciotti E, De Cola L. Nanocomposite Hydrogels as Platform for Cells Growth, Proliferation, and Chemotaxis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:4881-4893. [PMID: 27364463 DOI: 10.1002/smll.201601017] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 04/29/2016] [Indexed: 05/24/2023]
Abstract
The challenge of mimicking the extracellular matrix with artificial scaffolds that are able to reduce immunoresponse is still unmet. Recent findings have shown that mesenchymal stem cells (MSC) infiltrating into the implanted scaffold have effects on the implant integration by improving the healing process. Toward this aim, a novel polyamidoamine-based nanocomposite hydrogel is synthesized, cross-linked with porous nanomaterials (i.e., mesoporous silica nanoparticles), able to release chemokine proteins. A comprehensive viscoelasticity study confirms that the hydrogel provides optimal structural support for MSC infiltration and proliferation. The efficiency of this hydrogel, containing the chemoattractant stromal cell-derived factor 1α (SDF-1α), in promoting MSC migration in vitro is demonstrated. Finally, subcutaneous implantation of SDF-1α-releasing hydrogels in mice results in a modulation of the inflammatory reaction. Overall, the proposed SDF-1α-nanocomposite hydrogel proves to have potential for applications in tissue engineering.
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Affiliation(s)
- Federica Fiorini
- Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg, 8 rue Gaspard Monge, 67000, Strasbourg, France
| | - Eko Adi Prasetyanto
- Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg, 8 rue Gaspard Monge, 67000, Strasbourg, France
| | - Francesca Taraballi
- Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Avenue, Houston, TX, 77030, USA
| | - Laura Pandolfi
- Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Avenue, Houston, TX, 77030, USA
- College of Materials Science and Engineering, University of Chinese Academy of Science, 19A Yuquanlu, Beijing, 100049, China
| | - Francisco Monroy
- Departamento de Química Física I Universidad Complutense, Ciudad Universitaria s/n, 28040, Madrid, Spain
- Instituto de Investigacion Hospital 12 de Octubre (i+12), Avda. de Cordoba s/n, 28041, Madrid, Spain
| | - Iván López-Montero
- Departamento de Química Física I Universidad Complutense, Ciudad Universitaria s/n, 28040, Madrid, Spain
- Instituto de Investigacion Hospital 12 de Octubre (i+12), Avda. de Cordoba s/n, 28041, Madrid, Spain
| | - Ennio Tasciotti
- Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Avenue, Houston, TX, 77030, USA
| | - Luisa De Cola
- Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg, 8 rue Gaspard Monge, 67000, Strasbourg, France.
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21
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Zhu X, Cao W, Chang B, Zhang L, Qiao P, Li X, Si L, Niu Y, Song Y. Polyacrylate/nanosilica causes pleural and pericardial effusion, and pulmonary fibrosis and granuloma in rats similar to those observed in exposed workers. Int J Nanomedicine 2016; 11:1593-605. [PMID: 27143881 PMCID: PMC4841411 DOI: 10.2147/ijn.s102020] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Nanomaterials offer great benefit as well as potential damage to humans. Workers exposed to polyacrylate coatings have pleural effusion, pericardial effusion, and pulmonary fibrosis and granuloma, which are thought to be related to the high exposure to nanomaterials in the coatings. The study aimed to determine whether polyacrylate/silica nanoparticles cause similar toxicity in rats, as observed in exposed workers. Ninety male Wistar rats were randomly divided into five groups with 18 rats in each group. The groups included the saline control group, another control group of polyacrylate only, and low-, intermediate-, and high-dose groups of polyacrylate/nanosilica with concentrations of 3.125, 6.25, and 12.5 mg/kg. Seventy-five rats for the 1-week study were terminated for scheduled necropsy at 24 hours, 3 days, and 7 days postintratracheal instillation. The remaining 15 rats (three males/group) had repeated ultrasound and chest computed tomography examinations in a 2-week study to observe the pleural and pericardial effusion and pulmonary toxicity. We found that polyacrylate/nanosilica resulted in pleural and pericardial effusions, where nanosilica was isolated and detected. Effusion occurred on day 3 and day 5 post-administration of nanocomposites in the 6.25 and 12.5 mg/kg groups, it gradually rose to a maximum on days 7-10 and then slowly decreased and disappeared on day 14. With an increase in polyacrylate/nanosilica concentrations, pleural effusion increased, as shown by ultrasonographic qualitative observations. Pulmonary fibrosis and granuloma were also observed in the high-dose polyacrylate/nanosilica group. Our study shows that polyacrylate/nanosilica results in specific toxicity presenting as pleural and pericardial effusion, as well as pulmonary fibrosis and granuloma, which are almost identical to results in reported patients. These results indicate the urgent need and importance of nanosafety and awareness of toxicity of polyacrylate/nanosilica.
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Affiliation(s)
- Xiaoli Zhu
- Department of Occupational Medicine and Clinical Toxicology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Wen Cao
- Department of Ultrasound, Beijing Chaoyang Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Bing Chang
- Department of Toxicology, National Institute for Occupational Health and Poison Control, China CDC, Beijing, People's Republic of China
| | - Linyuan Zhang
- Department of Toxicology, National Institute for Occupational Health and Poison Control, China CDC, Beijing, People's Republic of China
| | - Peihuan Qiao
- Department of Toxicology, National Institute for Occupational Health and Poison Control, China CDC, Beijing, People's Republic of China
| | - Xue Li
- Department of Pathology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Lifang Si
- Department of Radiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Yingmei Niu
- Department of Occupational Medicine and Clinical Toxicology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Yuguo Song
- Department of Occupational Medicine and Clinical Toxicology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, People's Republic of China
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22
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Zhao F, Yao D, Guo R, Deng L, Dong A, Zhang J. Composites of Polymer Hydrogels and Nanoparticulate Systems for Biomedical and Pharmaceutical Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2015; 5:2054-2130. [PMID: 28347111 PMCID: PMC5304774 DOI: 10.3390/nano5042054] [Citation(s) in RCA: 198] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 11/18/2015] [Accepted: 11/20/2015] [Indexed: 12/25/2022]
Abstract
Due to their unique structures and properties, three-dimensional hydrogels and nanostructured particles have been widely studied and shown a very high potential for medical, therapeutic and diagnostic applications. However, hydrogels and nanoparticulate systems have respective disadvantages that limit their widespread applications. Recently, the incorporation of nanostructured fillers into hydrogels has been developed as an innovative means for the creation of novel materials with diverse functionality in order to meet new challenges. In this review, the fundamentals of hydrogels and nanoparticles (NPs) were briefly discussed, and then we comprehensively summarized recent advances in the design, synthesis, functionalization and application of nanocomposite hydrogels with enhanced mechanical, biological and physicochemical properties. Moreover, the current challenges and future opportunities for the use of these promising materials in the biomedical sector, especially the nanocomposite hydrogels produced from hydrogels and polymeric NPs, are discussed.
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Affiliation(s)
- Fuli Zhao
- Department of Polymer Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
| | - Dan Yao
- Department of Polymer Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
| | - Ruiwei Guo
- Department of Polymer Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
| | - Liandong Deng
- Department of Polymer Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
| | - Anjie Dong
- Department of Polymer Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
| | - Jianhua Zhang
- Department of Polymer Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
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