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Kafali M, Şahinoğlu OB, Tufan Y, Orsel ZC, Aygun E, Alyuz B, Saritas EU, Erdem EY, Ercan B. Antibacterial properties and osteoblast interactions of microfluidically synthesized chitosan - SPION composite nanoparticles. J Biomed Mater Res A 2023; 111:1662-1677. [PMID: 37232403 DOI: 10.1002/jbm.a.37575] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 04/28/2023] [Accepted: 05/16/2023] [Indexed: 05/27/2023]
Abstract
In this research, a multi-step microfluidic reactor was used to fabricate chitosan - superparamagnetic iron oxide composite nanoparticles (Ch - SPIONs), where composite formation using chitosan was aimed to provide antibacterial property and nanoparticle stability for magnetic resonance imaging (MRI). Monodispersed Ch - SPIONs had an average particle size of 8.8 ± 1.2 nm with a magnetization value of 32.0 emu/g. Ch - SPIONs could be used as an MRI contrast agent by shortening T2 relaxation parameter of the surrounding environment, as measured on a 3 T MRI scanner. In addition, Ch - SPIONs with concentrations less than 1 g/L promoted bone cell (osteoblast) viability up to 7 days of culture in vitro in the presence of 0.4 T external static magnetic field. These nanoparticles were also tested against Staphylococcus aureus (S. aureus) and Pseudomonas aeruginosa (P. aeruginosa), which are dangerous pathogens that cause infection in tissues and biomedical devices. Upon interaction of Ch - SPIONs with S. aureus and P. aeruginosa at 0.01 g/L concentration, nearly a 2-fold reduction in the number of colonies was observed for both bacteria strains at 48 h of culture. Results cumulatively showed that Ch - SPIONs were potential candidates as a cytocompatible and antibacterial agent that can be targeted to biofilm and imaged using an MRI.
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Affiliation(s)
- Melisa Kafali
- Department of Metallurgical and Materials Engineering, Middle East Technical University, Ankara, Turkey
| | - O Berkay Şahinoğlu
- Department of Mechanical Engineering, Bilkent University, Ankara, Turkey
| | - Yiğithan Tufan
- Department of Metallurgical and Materials Engineering, Middle East Technical University, Ankara, Turkey
| | - Z Cemre Orsel
- Department of Metallurgical and Materials Engineering, Middle East Technical University, Ankara, Turkey
| | - Elif Aygun
- Department of Electrical and Electronics Engineering, Bilkent University, Ankara, Turkey
- National Magnetic Resonance Research Center (UMRAM), Bilkent University, Ankara, Turkey
| | - Beril Alyuz
- Department of Electrical and Electronics Engineering, Bilkent University, Ankara, Turkey
- National Magnetic Resonance Research Center (UMRAM), Bilkent University, Ankara, Turkey
| | - Emine Ulku Saritas
- Department of Electrical and Electronics Engineering, Bilkent University, Ankara, Turkey
- National Magnetic Resonance Research Center (UMRAM), Bilkent University, Ankara, Turkey
- Neuroscience Graduate Program, Bilkent University, Ankara, Turkey
| | - E Yegan Erdem
- Department of Mechanical Engineering, Bilkent University, Ankara, Turkey
- National Nanotechnology Research Center (UNAM), Bilkent University, Ankara, Turkey
| | - Batur Ercan
- Department of Metallurgical and Materials Engineering, Middle East Technical University, Ankara, Turkey
- BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University, Ankara, Turkey
- Biomedical Engineering Program, Middle East Technical University, Ankara, Turkey
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2
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Amin MO, D'Cruz B, Al-Hetlani E. Continuous synthesis of BaFe 2O 4 and BaFe 12O 19 nanoparticles in a droplet microreactor for efficient detection of antihistamine drugs in oral fluid using surface-assisted laser desorption/ionization mass spectrometry. Analyst 2023; 148:4489-4503. [PMID: 37578130 DOI: 10.1039/d3an01081c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Surface-assisted laser desorption/ionization mass spectrometry (SALDI-MS) has received considerable attention as a complementary approach to matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS), offering substantial potential for analyzing molecules in the low-mass region. Herein, we propose a facile method, a microreactor for the synthesis of two types of barium ferrite (BaFe2O4 and BaFe12O19) nanoparticles (NPs) within moving droplets for detecting antihistamine (AH) drugs in oral fluid (OF). The synthesized BaFe2O4 and BaFe12O19 NPs exhibited small particle size, good ultraviolet absorption, and excellent performance in SALDI-MS, as determined by survival yield measurements. The limits-of-detection for AH drugs were in the range of 1 pg mL-1 to 100 ng mL-1, and spot-spot reproducibility of the SALDI substrates was satisfactory. Moreover, when analyzing cetirizine in OF, the obtained recoveries of cetirizine were 101% and 99% using BaFe2O4 and BaFe12O19 NP, respectively. Furthermore, the proposed method was validated by analyzing OF samples from a healthy volunteer who consumed a 5 mg levocetirizine tablet for seven days. SALDI-MS analysis confirmed the successful detection of endogenous components, the parent ion of cetirizine, and other exogenous substances. This study reports an advanced application of droplet microreactor technology for designing and synthesizing a wide range of novel and efficient SALDI-MS substrates for various applications.
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Affiliation(s)
- Mohamed O Amin
- Chemistry Department, Faculty of Science, Kuwait University, P.O. Box 5969, Safat - 13060, Kuwait.
| | - Bessy D'Cruz
- Chemistry Department, Faculty of Science, Kuwait University, P.O. Box 5969, Safat - 13060, Kuwait.
| | - Entesar Al-Hetlani
- Chemistry Department, Faculty of Science, Kuwait University, P.O. Box 5969, Safat - 13060, Kuwait.
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3
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Sood A, Kumar A, Gupta VK, Kim CM, Han SS. Translational Nanomedicines Across Human Reproductive Organs Modeling on Microfluidic Chips: State-of-the-Art and Future Prospects. ACS Biomater Sci Eng 2023; 9:62-84. [PMID: 36541361 DOI: 10.1021/acsbiomaterials.2c01080] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Forecasting the consequence of nanoparticles (NPs) and therapeutically significant molecules before materializing for human clinical trials is a mainstay for drug delivery and screening processes. One of the noteworthy obstacles that has prevented the clinical translation of NP-based drug delivery systems and novel drugs is the lack of effective preclinical platforms. As a revolutionary technology, the organ-on-a-chip (OOC), a coalition of microfluidics and tissue engineering, has surfaced as an alternative to orthodox screening platforms. OOC technology recapitulates the structural and physiological features of human organs along with intercommunications between tissues on a chip. The current review discusses the concept of microfluidics and confers cutting-edge fabrication processes for chip designing. We also outlined the advantages of microfluidics in analyzing NPs in terms of characterization, transport, and degradation in biological systems. The review further elaborates the scope and research on translational nanomedicines in human reproductive organs (testis, placenta, uterus, and menstrual cycle) by taking the advantages offered by microfluidics and shedding light on their potential future implications. Finally, we accentuate the existing challenges for clinical translation and scale-up dynamics for microfluidics chips and emphasize its future perspectives.
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Affiliation(s)
- Ankur Sood
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 38541, South Korea
| | - Anuj Kumar
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 38541, South Korea.,Institute of Cell Culture, Yeungnam University, 280 Daehak-ro, Gyeongsan 38541, South Korea
| | - Vijai Kumar Gupta
- Biorefining and Advanced Materials Research Center, Scotland's Rural College, Edinburgh EH9 3JG, United Kingdom
| | - Chul Min Kim
- Department of Mechatronics Engineering, Gyeongsang National University, 33 Dongjin-ro, Jinju, Gyeongsangnam-do 52725, South Korea
| | - Sung Soo Han
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 38541, South Korea.,Institute of Cell Culture, Yeungnam University, 280 Daehak-ro, Gyeongsan 38541, South Korea
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4
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Biocatalysis as a Green Approach for Synthesis of Iron Nanoparticles—Batch and Microflow Process Comparison. Catalysts 2023. [DOI: 10.3390/catal13010112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
There is a growing need for production of iron particles due to their possible use in numerous systems (e.g., electrical, magnetic, catalytic, biological and others). Although severe reaction conditions and heavy solvents are frequently used in production of nanoparticles, green synthesis has arisen as an eco-friendly method that uses biological catalysts. Various precursors are combined with biological material (such as enzymes, herbal extracts, biomass, bacteria or yeasts) that contain chemicals from the main or secondary metabolism that can function as catalysts for production of nanoparticles. In this work, batch (“one-pot”) biosynthesis of iron nanoparticles is reviewed, as well as the possibilities of using microfluidic systems for continuous biosynthesis of iron nanoparticles, which could overcome the limitations of batch synthesis.
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5
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Besenhard MO, Pal S, Gkogkos G, Gavriilidis A. Non-fouling flow reactors for nanomaterial synthesis. REACT CHEM ENG 2023. [DOI: 10.1039/d2re00412g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
This review provides a holistic description of flow reactor fouling for wet-chemical nanomaterial syntheses. Fouling origins and consequences are discussed together with the variety of flow reactors for its prevention.
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Affiliation(s)
| | - Sayan Pal
- Department of Chemical Engineering, University College London, London, WC1E 7JE, UK
| | - Georgios Gkogkos
- Department of Chemical Engineering, University College London, London, WC1E 7JE, UK
| | - Asterios Gavriilidis
- Department of Chemical Engineering, University College London, London, WC1E 7JE, UK
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Besenhard MO, Pal S, Storozhuk L, Dawes S, Thanh NTK, Norfolk L, Staniland S, Gavriilidis A. A versatile non-fouling multi-step flow reactor platform: demonstration for partial oxidation synthesis of iron oxide nanoparticles. LAB ON A CHIP 2022; 23:115-124. [PMID: 36454245 DOI: 10.1039/d2lc00892k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
In the last decade flow reactors for material synthesis were firmly established, demonstrating advantageous operating conditions, reproducible and scalable production via continuous operation, as well as high-throughput screening of synthetic conditions. Reactor fouling, however, often restricts flow chemistry and the common fouling prevention via segmented flow comes at the cost of inflexibility. Often, the difficulty of feeding reagents into liquid segments (droplets or slugs) constrains flow syntheses using segmented flow to simple synthetic protocols with a single reagent addition step prior or during segmentation. Hence, the translation of fouling prone syntheses requiring multiple reagent addition steps into flow remains challenging. This work presents a modular flow reactor platform overcoming this bottleneck by fully exploiting the potential of three-phase (gas-liquid-liquid) segmented flow to supply reagents after segmentation, hence facilitating fouling free multi-step flow syntheses. The reactor design and materials selection address the operation challenges inherent to gas-liquid-liquid flow and reagent addition into segments allowing for a wide range of flow rates, flow ratios, temperatures, and use of continuous phases (no perfluorinated solvents needed). This "Lego®-like" reactor platform comprises elements for three-phase segmentation and sequential reagent addition into fluid segments, as well as temperature-controlled residence time modules that offer the flexibility required to translate even complex nanomaterial synthesis protocols to flow. To demonstrate the platform's versatility, we chose a fouling prone multi-step synthesis, i.e., a water-based partial oxidation synthesis of iron oxide nanoparticles. This synthesis required I) the precipitation of ferrous hydroxides, II) the addition of an oxidation agent, III) a temperature treatment to initiate magnetite/maghemite formation, and IV) the addition of citric acid to increase the colloidal stability. The platform facilitated the synthesis of colloidally stable magnetic nanoparticles reproducibly at well-controlled synthetic conditions and prevented fouling using heptane as continuous phase. The biocompatible particles showed excellent heating abilities in alternating magnetic fields (ILP values >3 nH m2 kgFe-1), hence, their potential for magnetic hyperthermia cancer treatment. The platform allowed for long term operation, as well as screening of synthetic conditions to tune particle properties. This was demonstrated via the addition of tetraethylenepentamine, confirming its potential to control particle morphology. Such a versatile reactor platform makes it possible to translate even complex syntheses into flow, opening up new opportunities for material synthesis.
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Affiliation(s)
- Maximilian O Besenhard
- Department of Chemical Engineering, University College London, Torrington Place, London, WC1E 7JE, UK.
| | - Sayan Pal
- Department of Chemical Engineering, University College London, Torrington Place, London, WC1E 7JE, UK.
| | - Liudmyla Storozhuk
- Biophysics Group, Department of Physics and Astronomy, University College London, Gower Street, London, WC1E 6BT, UK
| | - Simon Dawes
- Department of Chemical Engineering, University College London, Torrington Place, London, WC1E 7JE, UK.
| | - Nguyen Thi Kim Thanh
- Biophysics Group, Department of Physics and Astronomy, University College London, Gower Street, London, WC1E 6BT, UK
- UCL Healthcare Biomagnetics and Nanomaterials Laboratories, University College London, 21 Albemarle Street, London W1S 4BS, UK
| | - Laura Norfolk
- Department of Chemistry, The University of Sheffield, Dainton Building, Brook Hill, Sheffield, S3 7HF, UK
| | - Sarah Staniland
- Department of Chemistry, The University of Sheffield, Dainton Building, Brook Hill, Sheffield, S3 7HF, UK
| | - Asterios Gavriilidis
- Department of Chemical Engineering, University College London, Torrington Place, London, WC1E 7JE, UK.
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7
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Ling FWM, Abdulbari HA, Chin SY. Heterogeneous Microfluidic Reactors: A Review and an Insight of Enzymatic Reactions. CHEMBIOENG REVIEWS 2022. [DOI: 10.1002/cben.202100058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Fiona W. M. Ling
- Universiti Malaysia Pahang Centre for Research in Advanced Fluid & Processes (FLUID CENTRE) Lebuhraya Tun Razak 26300 Gambang, Kuantan Pahang Malaysia
- Universiti Malaysia Pahang Department of Chemical Engineering, College of Engineering Lebuhraya Tun Razak 26300 Gambang, Kuantan Pahang Malaysia
| | - Hayder A. Abdulbari
- Universiti Malaysia Pahang Centre for Research in Advanced Fluid & Processes (FLUID CENTRE) Lebuhraya Tun Razak 26300 Gambang, Kuantan Pahang Malaysia
- Universiti Malaysia Pahang Department of Chemical Engineering, College of Engineering Lebuhraya Tun Razak 26300 Gambang, Kuantan Pahang Malaysia
| | - Sim Yee Chin
- Universiti Malaysia Pahang Department of Chemical Engineering, College of Engineering Lebuhraya Tun Razak 26300 Gambang, Kuantan Pahang Malaysia
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High Temperature Continuous Flow Syntheses of Iron Oxide Nanoflowers Using the Polyol Route in a Multi-Parametric Millifluidic Device. NANOMATERIALS 2021; 12:nano12010119. [PMID: 35010070 PMCID: PMC8746638 DOI: 10.3390/nano12010119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/17/2021] [Accepted: 12/22/2021] [Indexed: 11/17/2022]
Abstract
One of the most versatile routes for the elaboration of nanomaterials in materials science, including the synthesis of magnetic iron oxide nanoclusters, is the high-temperature polyol process. However, despite its versatility, this process still lacks reproducibility and scale-up, in addition to the low yield obtained in final materials. In this work, we demonstrate a home-made multiparametric continuous flow millifluidic system that can operate at high temperatures (up to 400 °C). After optimization, we validate its potential for the production of nanomaterials using the polyol route at 220 °C by elaborating ferrite iron oxide nanoclusters called nanoflowers (CoFe2O4, Fe3O4, MnFe2O4) with well-controlled nanostructure and composition, which are highly demanded due to their physical properties. Moreover, we demonstrate that by using such a continuous process, the chemical yield and reproducibility of the nanoflower synthesis are strongly improved as well as the possibility to produce these nanomaterials on a large scale with quantities up to 45 g per day.
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9
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Zardi P, Carofiglio T, Maggini M. Mild Microfluidic Approaches to Oxide Nanoparticles Synthesis. Chemistry 2021; 28:e202103132. [PMID: 34841599 PMCID: PMC9300203 DOI: 10.1002/chem.202103132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Indexed: 11/09/2022]
Abstract
Oxide nanoparticles (oxide NPs) are advanced materials with a wide variety of applications in different fields. The use of continuous flow methods is particularly appealing for their synthesis due to the high control achieved over the reaction conditions and the easy process scalability. The present review focuses on the preparation of oxide NPs using microfluidic setups at low temperature (≤80 °C), since the employment of mild reaction conditions is crucial for developing sustainable and cost-effective processes. A particular emphasis will be put on the improvement over the final product features (e. g., size, shape, and size distribution) given by flow methods with respect to conventional batch procedures. The main issues that arise by treating NPs suspensions in microfluidic systems are product deposition or channel clogging; mitigation strategies to overcome these drawbacks will also be presented and discussed.
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Affiliation(s)
- Paolo Zardi
- Department of Chemical Sciences, University of Padova, Via Francesco Marzolo 1, 35131, Padova, Italy
| | - Tommaso Carofiglio
- Department of Chemical Sciences, University of Padova, Via Francesco Marzolo 1, 35131, Padova, Italy
| | - Michele Maggini
- Department of Chemical Sciences, University of Padova, Via Francesco Marzolo 1, 35131, Padova, Italy
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10
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James M, Revia RA, Stephen Z, Zhang M. Microfluidic Synthesis of Iron Oxide Nanoparticles. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E2113. [PMID: 33114204 PMCID: PMC7690813 DOI: 10.3390/nano10112113] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/24/2020] [Accepted: 10/14/2020] [Indexed: 12/20/2022]
Abstract
Research efforts into the production and application of iron oxide nanoparticles (IONPs) in recent decades have shown IONPs to be promising for a range of biomedical applications. Many synthesis techniques have been developed to produce high-quality IONPs that are safe for in vivo environments while also being able to perform useful biological functions. Among them, coprecipitation is the most commonly used method but has several limitations such as polydisperse IONPs, long synthesis times, and batch-to-batch variations. Recent efforts at addressing these limitations have led to the development of microfluidic devices that can make IONPs of much-improved quality. Here, we review recent advances in the development of microfluidic devices for the synthesis of IONPs by coprecipitation. We discuss the main architectures used in microfluidic device design and highlight the most prominent manufacturing methods and materials used to construct these microfluidic devices. Finally, we discuss the benefits that microfluidics can offer to the coprecipitation synthesis process including the ability to better control various synthesis parameters and produce IONPs with high production rates.
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Affiliation(s)
- Matthew James
- Department of Materials Science and Engineering, University of Washington, Seattle, WA 98105, USA; (M.J.); (R.A.R.); (Z.S.)
| | - Richard A Revia
- Department of Materials Science and Engineering, University of Washington, Seattle, WA 98105, USA; (M.J.); (R.A.R.); (Z.S.)
| | - Zachary Stephen
- Department of Materials Science and Engineering, University of Washington, Seattle, WA 98105, USA; (M.J.); (R.A.R.); (Z.S.)
| | - Miqin Zhang
- Department of Materials Science and Engineering, University of Washington, Seattle, WA 98105, USA; (M.J.); (R.A.R.); (Z.S.)
- Department of Neurological Surgery, University of Washington, Seattle, WA 98105, USA
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11
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Zhang T, Xu Q, Huang T, Ling D, Gao J. New Insights into Biocompatible Iron Oxide Nanoparticles: A Potential Booster of Gene Delivery to Stem Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2001588. [PMID: 32725792 DOI: 10.1002/smll.202001588] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 05/10/2020] [Indexed: 06/11/2023]
Abstract
Gene delivery to stem cells is a critical issue of stem cells-based therapies, still facing ongoing challenges regarding efficiency and safety. Recent advances in the controlled synthesis of biocompatible magnetic iron oxide nanoparticles (IONPs) have provided a powerful nanotool for assisting gene delivery to stem cells. However, this field is still at an early stage, with well-designed and scalable IONPs synthesis highly desired. Furthermore, the potential risks or bioeffects of IONPs on stem cells are not completely figured out. Therefore, in this review, the updated researches focused on the gene delivery to stem cells using various designed IONPs are highlighted. Additionally, the impacts of the physicochemical properties of IONPs, as well as the magnetofection systems on the gene delivery performance and biocompatibility are summarized. Finally, challenges attributed to the potential impacts of IONPs on the biologic behaviors of stem cells and the large-scale productions of uniform IONPs are emphasized. The principles and challenges summarized in this review provide a general guidance for the rational design of IONPs-assisted gene delivery to stem cells.
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Affiliation(s)
- Tianyuan Zhang
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Qianhao Xu
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Ting Huang
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Daishun Ling
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Jianqing Gao
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Hangzhou, 310058, China
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12
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Kye HG, Ahrberg CD, Park BS, Lee JM, Chung BG. Separation, Purification, and Detection of cfDNA in a Microfluidic Device. BIOCHIP JOURNAL 2020. [DOI: 10.1007/s13206-020-4208-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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13
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Automated droplet reactor for the synthesis of iron oxide/gold core-shell nanoparticles. Sci Rep 2020; 10:1737. [PMID: 32015417 PMCID: PMC6997455 DOI: 10.1038/s41598-020-58580-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 12/10/2019] [Indexed: 12/17/2022] Open
Abstract
Core-shell nanoparticles are promising candidates for theranostic drugs, as they combine different intrinsic properties with a small size and large surface area. However, their controlled synthesis, or the screening and optimization of synthesis conditions are often difficult and labor intensive. Through the precise control over mass and heat transfer, and automatization possibilities, microfluidic devices could be a solution to this problem in a lab scale synthesis. Here, we demonstrate a microfluidic, capillary, droplet reactor for the multi-step synthesis of iron oxide/gold core-shell nanoparticles. Through the integration of a transmission measurement at the outlet of the reactor, synthesis results can be monitored in a real-time manner. This allowed for the implementation of an optimization algorithm. Starting from three separate initial guesses, the algorithm converged to the same synthesis conditions in less than 30 minutes for each initial guess. These conditions resulted in diameter for the iron oxide core of 5.8 ± 1.4 nm, a thickness for the gold shell of 3.5 ± 0.6 nm, and a total diameter of the core-shell particles of 13.1 ± 2.5 nm. Finally, applications of the iron oxide/gold core-shell nanoparticles were demonstrated for Surface Enhanced Raman Spectroscopy (SERS), photothermal therapy, and magnetic resonance imaging (MRI).
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14
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Kašpar O, Koyuncu AH, Hubatová-Vacková A, Balouch M, Tokárová V. Influence of channel height on mixing efficiency and synthesis of iron oxide nanoparticles using droplet-based microfluidics. RSC Adv 2020; 10:15179-15189. [PMID: 35495462 PMCID: PMC9052325 DOI: 10.1039/d0ra02470h] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 04/07/2020] [Indexed: 11/21/2022] Open
Abstract
Experimental and CFD numerical analysis of mixing efficiency in droplet-based microfluidics for various channel heights and its impact on the preparation of iron oxide nanoparticles.
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Affiliation(s)
- O. Kašpar
- Department of Chemical Engineering
- University of Chemistry and Technology Prague
- Prague 6
- Czech Republic
| | - A. H. Koyuncu
- Department of Chemical Engineering
- University of Chemistry and Technology Prague
- Prague 6
- Czech Republic
| | - A. Hubatová-Vacková
- Department of Chemical Engineering
- University of Chemistry and Technology Prague
- Prague 6
- Czech Republic
| | - M. Balouch
- Department of Chemical Engineering
- University of Chemistry and Technology Prague
- Prague 6
- Czech Republic
| | - V. Tokárová
- Department of Chemical Engineering
- University of Chemistry and Technology Prague
- Prague 6
- Czech Republic
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15
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Roberts EJ, Karadaghi LR, Wang L, Malmstadt N, Brutchey RL. Continuous Flow Methods of Fabricating Catalytically Active Metal Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2019; 11:27479-27502. [PMID: 31287651 DOI: 10.1021/acsami.9b07268] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
One of the obstacles preventing the commercialization of colloidal nanoparticle catalysts is the difficulty in fabricating these materials at scale while maintaining a high level of control over their resulting morphologies, and ultimately, their properties. Translation of batch-scale solution nanoparticle syntheses to continuous flow reactors has been identified as one method to address the scaling issue. The superior heat and mass transport afforded by the high surface-area-to-volume ratios of micro- and millifluidic channels allows for high control over reaction conditions and oftentimes results in decreased reaction times, higher yields, and/or more monodisperse size distributions compared to an analogous batch reaction. Furthermore, continuous flow reactors are automatable and have environmental health and safety benefits, making them practical for commercialization. Herein, a discussion of continuous flow methods, reactor design, and potential challenges is presented. A thorough account of the implementation of these technologies for the fabrication of catalytically active metal nanoparticles is reviewed for hydrogenation, electrocatalysis, and oxidation reactions.
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Affiliation(s)
- Emily J Roberts
- Department of Chemistry , University of Southern California , 840 Downey Way , Los Angeles , California 90089-0744 , United States
| | - Lanja R Karadaghi
- Department of Chemistry , University of Southern California , 840 Downey Way , Los Angeles , California 90089-0744 , United States
| | - Lu Wang
- Mork Family Department of Chemical Engineering and Materials Science , University of Southern California , 925 Bloom Walk , Los Angeles , California 90089-1211 , United States
| | - Noah Malmstadt
- Department of Chemistry , University of Southern California , 840 Downey Way , Los Angeles , California 90089-0744 , United States
- Mork Family Department of Chemical Engineering and Materials Science , University of Southern California , 925 Bloom Walk , Los Angeles , California 90089-1211 , United States
| | - Richard L Brutchey
- Department of Chemistry , University of Southern California , 840 Downey Way , Los Angeles , California 90089-0744 , United States
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