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Ren L, Liu S, Zhong J, Zhang L. Revolutionizing targeting precision: microfluidics-enabled smart microcapsules for tailored delivery and controlled release. LAB ON A CHIP 2024; 24:1367-1393. [PMID: 38314845 DOI: 10.1039/d3lc00835e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
As promising delivery systems, smart microcapsules have garnered significant attention owing to their targeted delivery loaded with diverse active materials. By precisely manipulating fluids on the micrometer scale, microfluidic has emerged as a powerful tool for tailoring delivery systems based on potential applications. The desirable characteristics of smart microcapsules are associated with encapsulation capacity, targeted delivery capability, and controlled release of encapsulants. In this review, we briefly describe the principles of droplet-based microfluidics for smart microcapsules. Subsequently, we summarize smart microcapsules as delivery systems for efficient encapsulation and focus on target delivery patterns, including passive targets, active targets, and microfluidics-assisted targets. Additionally, based on release mechanisms, we review controlled release modes adjusted by smart membranes and on/off gates. Finally, we discuss existing challenges and potential implications associated with smart microcapsules.
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Affiliation(s)
- Lingling Ren
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong, China.
| | - Shuang Liu
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong, China.
| | - Junjie Zhong
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong, China.
| | - Liyuan Zhang
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong, China.
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2
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Liu D, Zhao S, Jiang Y, Gao C, Wu Y, Liu Y. Biocompatible Dual Network Bovine Serum Albumin-Loaded Hydrogel-Accelerates Wound Healing. Eur Polym J 2023. [DOI: 10.1016/j.eurpolymj.2023.111820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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3
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Kim JW, Han SH, Choi YH, Hamonangan WM, Oh Y, Kim SH. Recent advances in the microfluidic production of functional microcapsules by multiple-emulsion templating. LAB ON A CHIP 2022; 22:2259-2291. [PMID: 35608122 DOI: 10.1039/d2lc00196a] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Multiple-emulsion drops serve as versatile templates to design functional microcapsules due to their core-shell geometry and multiple compartments. Microfluidics has been used for the elaborate production of multiple-emulsion drops with a controlled composition, order, and dimensions, elevating the value of multiple-emulsion templates. Moreover, recent advances in the microfluidic control of the emulsification and parallelization of drop-making junctions significantly enhance the production throughput for practical use. Metastable multiple-emulsion drops are converted into stable microcapsules through the solidification of selected phases, among which solid shells are designed to function in a programmed manner. Functional microcapsules are used for the storage and release of active materials as drug carriers. Beyond their conventional uses, microcapsules can serve as microcompartments responsible for transmembrane communication, which is promising for their application in advanced microreactors, artificial cells, and microsensors. Given that post-processing provides additional control over the composition and construction of multiple-emulsion drops, they are excellent confining geometries to study the self-assembly of colloids and liquid crystals and produce miniaturized photonic devices. This review article presents the recent progress and current state of the art in the microfluidic production of multiple-emulsion drops, functionalization of solid shells, and applications of microcapsules.
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Affiliation(s)
- Ji-Won Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.
| | - Sang Hoon Han
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.
| | - Ye Hun Choi
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.
| | - Wahyu Martumpal Hamonangan
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.
| | - Yoonjin Oh
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.
| | - Shin-Hyun Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.
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4
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Chu JO, Choi Y, Kim DW, Jeong HS, Park JP, Weitz DA, Lee SJ, Lee H, Choi CH. Cell-Inspired Hydrogel Microcapsules with a Thin Oil Layer for Enhanced Retention of Highly Reactive Antioxidants. ACS APPLIED MATERIALS & INTERFACES 2022; 14:2597-2604. [PMID: 34983184 DOI: 10.1021/acsami.1c20748] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In nature, individual cells are compartmentalized by a membrane that protects the cellular elements from the surrounding environment while simultaneously equipped with an antioxidant defense system to alleviate the oxidative stress resulting from light, oxygen, moisture, and temperature. However, this mechanism has not been realized in cellular mimics to effectively encapsulate and retain highly reactive antioxidants. Here, we report cell-inspired hydrogel microcapsules with an interstitial oil layer prepared by utilizing triple emulsion drops as templates to achieve enhanced retention of antioxidants. We employ ionic gelation for the hydrogel shell to prevent exposure of the encapsulated antioxidants to free radicals typically generated during photopolymerization. The interstitial oil layer in the microcapsule serves as an stimulus-responsive diffusion barrier, enabling efficient encapsulation and retention of antioxidants by providing an adequate pH microenvironment until osmotic pressure is applied to release the cargo on-demand. Moreover, addition of a lipophilic reducing agent in the oil layer induces a complementary reaction with the antioxidant, similar to the nonenzymatic antioxidant defense system in cells, leading to enhanced retention of the antioxidant activity. Furthermore, we show the complete recovery and even further enhancement in antioxidant activity by lowering the storage temperature, which decreases the oxidation rate while retaining the complementary reaction with the lipophilic reducing agent.
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Affiliation(s)
- Jin-Ok Chu
- Division of Cosmetic Science and Technology, Daegu Haany University, 1 Haanydaero, Gyeongsan, Gyeongbuk 38610, Korea
| | - Yoon Choi
- Division of Cosmetic Science and Technology, Daegu Haany University, 1 Haanydaero, Gyeongsan, Gyeongbuk 38610, Korea
| | - Do-Wan Kim
- Department of Pharmaceutical Engineering, Daegu Haany University, 1 Haanydaero, Gyeongsan, Gyeongbuk 38610, Korea
| | - Hye-Seon Jeong
- Division of Cosmetic Science and Technology, Daegu Haany University, 1 Haanydaero, Gyeongsan, Gyeongbuk 38610, Korea
| | - Jong Pil Park
- Department of Food Science and Technology, Chung-Ang University, Anseong 17546, Korea
| | - David A Weitz
- John A. Paulson School of Engineering and Applied Sciences and Department of Physics, Harvard University, 9 Oxford St, Cambridge, Massachusetts 02138, United States
| | - Sei-Jung Lee
- Department of Pharmaceutical Engineering, Daegu Haany University, 1 Haanydaero, Gyeongsan, Gyeongbuk 38610, Korea
| | - Hyomin Lee
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk 37673, Korea
| | - Chang-Hyung Choi
- Division of Cosmetic Science and Technology, Daegu Haany University, 1 Haanydaero, Gyeongsan, Gyeongbuk 38610, Korea
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5
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Prieto-Costas LA, Milton L, Quiñones-Jurgensen CM, Rivera JM. Screening and Quantification of the Encapsulation of Dyes in Supramolecular Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:12681-12689. [PMID: 34665963 PMCID: PMC9886066 DOI: 10.1021/acs.langmuir.1c02065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The encapsulation of therapeutic agents, such as drugs and vaccines, into colloidal particles offers an attractive strategy to enhance their efficacy. Previously, we reported the development of guanosine-based supramolecular colloidal particles suitable for encapsulating a broad array of guests ranging from small molecule drugs, like doxorubicin, to proteins, like GFP. Many biomedical applications of such particles require a precise determination of the amount of encapsulated therapeutic agents. Despite many studies describing the development of particle-based delivery systems, a general method for the precise and quick quantification of the encapsulated payload is still lacking. Here, we report a method based on flow cytometry measurements for complexes made from guanosine-based particles and a variety of commercially available fluorescent dyes. This method allows us to determine the apparent affinities of such dyes for two variants of these particles, which in turn provides insightful structure-affinity relationships. In contrast to the current methods, such as those that rely on fluorescence microscopy based on measurements of absorption/fluorescence of dissolved particles or on the supernatant of the solution, the reported method is suitable for high-throughput screening and more reproducible results. The protocol described here should be applicable to a wide variety of colloidal particles being developed around the world. Our group is currently expanding the scope to quantify the encapsulation of other molecules of biomedical interest, such as proteins and nucleic acids.
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Affiliation(s)
- Luis A Prieto-Costas
- Department of Chemistry and Molecular Sciences Research Center, University of Puerto Rico at Río Piedras, San Juan, Puerto Rico 00926, United States
| | - Logan Milton
- Department of Chemistry and Molecular Sciences Research Center, University of Puerto Rico at Río Piedras, San Juan, Puerto Rico 00926, United States
| | - Carla M Quiñones-Jurgensen
- Department of Chemistry and Molecular Sciences Research Center, University of Puerto Rico at Río Piedras, San Juan, Puerto Rico 00926, United States
| | - José M Rivera
- Department of Chemistry and Molecular Sciences Research Center, University of Puerto Rico at Río Piedras, San Juan, Puerto Rico 00926, United States
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6
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Toprakcioglu Z, Knowles TPJ. Shear-mediated sol-gel transition of regenerated silk allows the formation of Janus-like microgels. Sci Rep 2021; 11:6673. [PMID: 33758259 PMCID: PMC7988050 DOI: 10.1038/s41598-021-85199-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 02/08/2021] [Indexed: 01/31/2023] Open
Abstract
Microcapsules and microgels consisting of macromolecular networks have received increasing attention due to their biomedical and pharmaceutical applications. Protein microgels and in particular silk-based microcapsules have desirable properties due to their biocompatibility and lack of toxicity. Typically such structures formed through emulsion templating are spherical in geometry due to interfacial tension. However, approaches to synthesis particles with more complex and non-spherical geometries are sought due to their packing properties and cargo release characteristics. Here, we describe a droplet-microfluidic strategy for generating asymmetric tubular-like microgels from reconstituted silk fibroin; a major component of native silk. It was determined using fluorescence microscopy, that the shear stress within the microchannel promotes surface protein aggregation, resulting in the asymmetric morphology of the microgels. Moreover, the structural transition that the protein undergoes was confirmed using FTIR. Crucially, the core of the microgels remains liquid, while the surface has fully aggregated into a fibrillar network. Additionally, we show that microgel morphology could be controlled by varying the dispersed to continuous phase flow rates, while it was determined that the radius of curvature of the asymmetric microgels is correlated to the wall shear stress. By comparing the surface fluorescence intensity of the microgels as a function of radius of curvature, the effect of the shear stress on the amount of aggregation could be quantified. Finally, the potential use of these asymmetric microgels as carriers of cargo molecules is showcased. As the core of the microgel remains liquid but the shell has gelled, this approach is highly suitable for the storage of bio-active cargo molecules such as antibodies, making such a delivery system attractive in the context of biomedical and pharmaceutical applications.
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Affiliation(s)
- Zenon Toprakcioglu
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Tuomas P J Knowles
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
- Cavendish Laboratory, Department of Physics, University of Cambridge, J J Thomson Avenue, Cambridge, CB3 0HE, UK.
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7
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Hydrogels for Efficient Multiplex PCR. BIOTECHNOL BIOPROC E 2020. [DOI: 10.1007/s12257-020-0134-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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8
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Eccentric magnetic microcapsule for on-demand transportation, release, and evacuation in microfabrication fluidic networks. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124905] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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9
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Guo J, Hou L, Hou J, Yu J, Hu Q. Generation of Ultra-Thin-Shell Microcapsules Using Osmolarity-Controlled Swelling Method. MICROMACHINES 2020; 11:E444. [PMID: 32340189 PMCID: PMC7231318 DOI: 10.3390/mi11040444] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 04/19/2020] [Accepted: 04/21/2020] [Indexed: 12/17/2022]
Abstract
Microcapsules are attractive core-shell configurations for studies of controlled release, biomolecular sensing, artificial microbial environments, and spherical film buckling. However, the production of microcapsules with ultra-thin shells remains a challenge. Here we develop a simple and practical osmolarity-controlled swelling method for the mass production of monodisperse microcapsules with ultra-thin shells via water-in-oil-in-water (W/O/W) double-emulsion drops templating. The size and shell thickness of the double-emulsion drops are precisely tuned by changing the osmotic pressure between the inner cores and the suspending medium, indicating the practicability and effectiveness of this swelling method in tuning the shell thickness of double-emulsion drops and the resultant microcapsules. This method enables the production of microcapsules even with an ultra-thin shell less than hundreds of nanometers, which overcomes the difficulty in producing ultra-thin-shell microcapsules using the classic microfluidic emulsion technologies. In addition, the ultra-thin-shell microcapsules can maintain their intact spherical shape for up to 1 year without rupturing in our long-term observation. We believe that the osmolarity-controlled swelling method will be useful in generating ultra-thin-shell polydimethylsiloxane (PDMS) microcapsules for long-term encapsulation, and for thin film folding, buckling and rupturing investigation.
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Affiliation(s)
| | | | | | | | - Qingming Hu
- School of Mechatronics Engineering, Qiqihar University, Wenhua Street 42, Qiqihar 161006, Heilongjiang, China; (J.G.); (L.H.); (J.H.); (J.Y.)
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10
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Choi YH, Lee SS, Lee DM, Jeong HS, Kim SH. Composite Microgels Created by Complexation between Polyvinyl Alcohol and Graphene Oxide in Compressed Double-Emulsion Drops. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1903812. [PMID: 31515955 DOI: 10.1002/smll.201903812] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 08/21/2019] [Indexed: 05/22/2023]
Abstract
Microgels, microparticles made of hydrogels, show fast diffusion kinetics and high reconfigurability while maintaining the advantages of hydrogels, being useful for various applications. Here, presented is a new microfluidic strategy for producing polymer-graphene oxide (GO) composite microgels without chemical cues or a temperature swing for gelation. As a main component of microgels, polymers that are able to form hydrogen bonds, such as polyvinyl alcohol (PVA), are used. In the mixture of PVA and GO, GO is tethered by PVA through hydrogen bonding. When the mixture is rapidly concentrated in the core of double-emulsion drops by osmotic-pressure-driven water pumping, PVA-tethered GO sheets form a nematic phase with a planar alignment. In addition, the GO sheets are linked by additional hydrogen bonds, leading to a sol-gel transition. Therefore, the PVA-GO composite remains undissolved when it is directly exposed to water by oil-shell rupture. These composite microgels can be also produced using poly(ethylene oxide) or poly(acrylic acid), instead of PVA. In addition, the microgels can be functionalized by incorporating other polymers in the presence of the hydrogel-forming polymers. It is shown that the multicomponent microgels made from a mixture of polyacrylamide, PVA, and GO show an excellent adsorption capacity for impurities.
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Affiliation(s)
- Ye Hun Choi
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Sang Seok Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
- Functional Composite Materials Research Center, Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), Wanju-gun, Jeollabuk-do, 55324, Republic of Korea
| | - Dong-Myeong Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
- Functional Composite Materials Research Center, Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), Wanju-gun, Jeollabuk-do, 55324, Republic of Korea
| | - Hyeon Su Jeong
- Functional Composite Materials Research Center, Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), Wanju-gun, Jeollabuk-do, 55324, Republic of Korea
| | - Shin-Hyun Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
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11
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Liu Z, Fontana F, Python A, Hirvonen JT, Santos HA. Microfluidics for Production of Particles: Mechanism, Methodology, and Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1904673. [PMID: 31702878 DOI: 10.1002/smll.201904673] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 09/27/2019] [Indexed: 06/10/2023]
Abstract
In the past two decades, microfluidics-based particle production is widely applied for multiple biological usages. Compared to conventional bulk methods, microfluidic-assisted particle production shows significant advantages, such as narrower particle size distribution, higher reproducibility, improved encapsulation efficiency, and enhanced scaling-up potency. Herein, an overview of the recent progress of the microfluidics technology for nano-, microparticles or droplet fabrication, and their biological applications is provided. For both nano-, microparticles/droplets, the previously established mechanisms behind particle production via microfluidics and some typical examples during the past five years are discussed. The emerging interdisciplinary technologies based on microfluidics that have produced microparticles or droplets for cellular analysis and artificial cells fabrication are summarized. The potential drawbacks and future perspectives are also briefly discussed.
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Affiliation(s)
- Zehua Liu
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014, Helsinki, Finland
| | - Flavia Fontana
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014, Helsinki, Finland
| | - Andre Python
- Nuffield Department of Medicine, Li Ka Shing Centre for Health Information and Discovery, Big Data Institute, University of Oxford, OX3 7LF, Oxford, UK
| | - Jouni T Hirvonen
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014, Helsinki, Finland
| | - Hélder A Santos
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014, Helsinki, Finland
- Helsinki Institute of Life Science (HiLIFE), University of Helsinki, FI-00014, Helsinki, Finland
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12
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Toprakcioglu Z, Challa PK, Morse DB, Knowles T. Attoliter protein nanogels from droplet nanofluidics for intracellular delivery. SCIENCE ADVANCES 2020; 6:eaay7952. [PMID: 32083185 PMCID: PMC7007244 DOI: 10.1126/sciadv.aay7952] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 11/22/2019] [Indexed: 05/17/2023]
Abstract
Microscale hydrogels consisting of macromolecular networks in aqueous continuous phases have received increasing attention because of their potential use in tissue engineering, cell encapsulation and for the storage and release of cargo molecules. However, for applications targeting intracellular delivery, their micrometer-scale size is unsuitable for effective cellular uptake. Nanoscale analogs of such materials are thus required for this key area. Here, we describe a microfluidics/nanofluidics-based strategy for generating monodisperse nanosized water-in-oil emulsions with controllable sizes ranging from 2500 ± 110 nm down to 51 ± 6 nm. We demonstrate that these nanoemulsions can act as templates to form protein nanogels stabilized by supramolecular fibrils from three different proteins. We further show that these nanoparticles have the ability to penetrate mammalian cell membranes and deliver intracellular cargo. Due to their biocompatibility and lack of toxicity, natural protein-based nanoparticles present advantageous characteristics as vehicles for cargo molecules in the context of pharmaceutical and biomedical applications.
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Affiliation(s)
- Zenon Toprakcioglu
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
| | - Pavan Kumar Challa
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
| | - David B. Morse
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
| | - Tuomas Knowles
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
- Cavendish Laboratory, Department of Physics, University of Cambridge, J J Thomson Avenue, Cambridge CB3 OHE, UK
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13
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Xiong Q, Zhang X, Wei W, Wei G, Su Z. Enzyme-mediated reversible deactivation radical polymerization for functional materials: principles, synthesis, and applications. Polym Chem 2020. [DOI: 10.1039/d0py00136h] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Enzymes provide a potential and highly efficient way to mediate the formation of various functional polymer materials with wide applications.
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Affiliation(s)
- Qingyun Xiong
- State Key Laboratory of Chemical Resource Engineering
- Beijing Key Laboratory of Advanced Functional Polymer Composites
- Beijing University of Chemical Technology
- 100029 Beijing
- China
| | - Xiaoyuan Zhang
- Chair of Materials Science (CMS)
- Otto Schott Institute of Materials Research (OSIM)
- Friedrich Schiller University Jena
- Jena 07743
- Germany
| | - Wenfeng Wei
- State Key Laboratory of Chemical Resource Engineering
- Beijing Key Laboratory of Advanced Functional Polymer Composites
- Beijing University of Chemical Technology
- 100029 Beijing
- China
| | - Gang Wei
- College of Chemistry and Chemical Engineering
- Qingdao University
- 266071 Qingdao
- China
- Faculty of Production Engineering
| | - Zhiqiang Su
- State Key Laboratory of Chemical Resource Engineering
- Beijing Key Laboratory of Advanced Functional Polymer Composites
- Beijing University of Chemical Technology
- 100029 Beijing
- China
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14
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Stimuli-chromism of photoswitches in smart polymers: Recent advances and applications as chemosensors. Prog Polym Sci 2019. [DOI: 10.1016/j.progpolymsci.2019.101149] [Citation(s) in RCA: 109] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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15
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Deng X, Ren Y, Hou L, Liu W, Jiang T, Jiang H. Compound-Droplet-Pairs-Filled Hydrogel Microfiber for Electric-Field-Induced Selective Release. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1903098. [PMID: 31464378 DOI: 10.1002/smll.201903098] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 08/08/2019] [Indexed: 06/10/2023]
Abstract
The separate co-encapsulation and selective controlled release of multiple encapsulants in a predetermined sequence has potentially important applications for drug delivery and tissue engineering. However, the selective controlled release of distinct contents upon one triggering event for most existing microcarriers still remains challenging. Here, novel microfluidic fabrication of compound-droplet-pairs-filled hydrogel microfibers (C-Fibers) is presented for two-step selective controlled release under AC electric field. The parallel arranged compound droplets enable the separate co-encapsulation of distinct contents in a single microfiber, and the release sequence is guaranteed by the discrepancy of the shell thickness or core conductivity of the encapsulated droplets. This is demonstrated by using a high-frequency electric field to trigger the first burst release of droplets with higher conductivity or thinner shell, followed by the second release of the other droplets under low-frequency electric field. The reported C-Fibers provide novel multidelivery system for a wide range of applications that require controlled release of multiple ingredients in a prescribed sequence.
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Affiliation(s)
- Xiaokang Deng
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, China
| | - Yukun Ren
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, China
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin, 150001, China
| | - Likai Hou
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, China
| | - Weiyu Liu
- School of Electronics and Control Engineering, Chang'an University, Xi'an, 710064, China
| | - Tianyi Jiang
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, China
| | - Hongyuan Jiang
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, China
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin, 150001, China
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16
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Maktabi S, Schertzer JW, Chiarot PR. Dewetting-induced formation and mechanical properties of synthetic bacterial outer membrane models (GUVs) with controlled inner-leaflet lipid composition. SOFT MATTER 2019; 15:3938-3948. [PMID: 31011738 PMCID: PMC6647036 DOI: 10.1039/c9sm00223e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The double-membrane cellular envelope of Gram-negative bacteria enables them to endure harsh environments and represents a barrier to many clinically available antibiotics. The outer membrane (OM) is exposed to the environment and is the first point of contact involved in bacterial processes such as signaling, pathogenesis, and motility. As in the cytoplasmic membrane, the OM in Gram-negative bacteria has a phospholipid-rich inner leaflet and an outer leaflet that is predominantly composed of lipopolysaccharide (LPS). We report on a microfluidic technique for fabricating monodisperse asymmetric giant unilamellar vesicles (GUVs) possessing the Gram-negative bacterial OM lipid composition. Our continuous microfluidic fabrication technique generates 50-150 μm diameter water-in-oil-in-water double emulsions at high-throughput. The water-oil and oil-water interfaces facilitate the self-assembly of phospholipid and LPS molecules to create the inner and outer leaflets of the lipid bilayer, respectively. The double emulsions have ultrathin oil shells, which minimizes the amount of residual organic solvent that remains trapped between the leaflets of the GUV membrane. An extraction process by ethanol and micropipette aspiration of the ultrathin oil shells triggers an adhesive interaction between the two lipid monolayers assembled on the water-oil and oil-water interfaces (i.e., dewetting transition), forcing them to contact and form a lipid bilayer membrane. The effect of different inner-leaflet lipid compositions on the emulsion/vesicle stability and the dewetting transition is investigated. We also report on the values for bending and area expansion moduli of synthetic asymmetric model membranes with lipid composition/architecture that is physiologically relevant to the OM in Pseudomonas aeruginosa bacteria.
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Affiliation(s)
- Sepehr Maktabi
- Department of Mechanical Engineering, State University of New York at Binghamton, Binghamton, NY, USA.
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17
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Mou CL, Wang W, Ju XJ, Xie R, Liu Z, Chu LY. Dual-responsive microcarriers with sphere-in-capsule structures for co-encapsulation and sequential release. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2018.06.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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18
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Brzeziński M, Socka M, Kost B. Microfluidics for producing polylactide nanoparticles and microparticles and their drug delivery application. POLYM INT 2019. [DOI: 10.1002/pi.5753] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Marek Brzeziński
- Polymer Department, Centre of Molecular and Macromolecular StudiesPolish Academy of Sciences Łódź Poland
| | - Marta Socka
- Polymer Department, Centre of Molecular and Macromolecular StudiesPolish Academy of Sciences Łódź Poland
| | - Bartłomiej Kost
- Polymer Department, Centre of Molecular and Macromolecular StudiesPolish Academy of Sciences Łódź Poland
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19
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Gu X, Liu Y, Chen G, Wang H, Shao C, Chen Z, Lu P, Zhao Y. Mesoporous Colloidal Photonic Crystal Particles for Intelligent Drug Delivery. ACS APPLIED MATERIALS & INTERFACES 2018; 10:33936-33944. [PMID: 30215247 DOI: 10.1021/acsami.8b11175] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Particle-based delivery systems demonstrate a pregnant value in the fields of drug research and development. Efforts to advance this technology focus on the fabrication of functional particles with enhanced efficiency and performance for drug delivery. Here, we present a new type of mesoporous colloidal photonic crystal particle (MCPCP)-based drug-delivery system with distinct features. As the MCPCPs were constructed by self-assembling monodisperse mesoporous nanoparticles in microfluidic droplet templates, they were composed of hierarchical macro- and mesoporous structures and could provide plenty of nanopores and interconnected nanochannels for synergistic loading of both micro- and macromolecule drugs with large quantity and sustained release. In addition, by integrating the stimuli-responsive poly( N-isopropylacrylamide) hydrogel into the MCPCPs and employing it as a "gating" to control the opening of the macro- and mesopores, the MCPCP delivery systems were imparted with the function of controllable release. More attractively, as the average refractive index of the MCPCPs was decreased during the release of the loaded actives, the photonic band gaps of the MCPCPs blue-shifted correspondingly; this provided a novel stratagem for real-time self-reporting of the therapeutic agent release process of the MCPCPs. Hence, the MCPCPs are ideal for intelligent drug delivery because of these dramatical features.
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Affiliation(s)
- Xiaoxiao Gu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering , Southeast University , Nanjing 210096 , China
- Department of Medical Oncology, Wuxi People's Hospital , Nanjing Medical University , Wuxi 214023 , China
| | - Yuxiao Liu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering , Southeast University , Nanjing 210096 , China
| | - Guopu Chen
- Department of General Surgery, Jinling Hospital , Medical School of Nanjing University , Nanjing 210002 , China
| | - Huan Wang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering , Southeast University , Nanjing 210096 , China
| | - Changmin Shao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering , Southeast University , Nanjing 210096 , China
| | - Zhuoyue Chen
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering , Southeast University , Nanjing 210096 , China
| | - Peihua Lu
- Department of Medical Oncology, Wuxi People's Hospital , Nanjing Medical University , Wuxi 214023 , China
| | - Yuanjin Zhao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering , Southeast University , Nanjing 210096 , China
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20
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Levin A, Michaels TCT, Mason TO, Müller T, Adler-Abramovich L, Mahadevan L, Cates ME, Gazit E, Knowles TPJ. Self-Assembly-Mediated Release of Peptide Nanoparticles through Jets Across Microdroplet Interfaces. ACS APPLIED MATERIALS & INTERFACES 2018; 10:27578-27583. [PMID: 30080033 DOI: 10.1021/acsami.8b09511] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The release of nanoscale structures from microcapsules, triggered by changes in the capsule in response to external stimuli, has significant potential for active component delivery. Here, we describe an orthogonal strategy for controlling molecular species' release across oil/water interfaces by modulating their intrinsic self-assembly state. We show that although the soluble peptide Boc-FF can be stably encapsulated for days, its self-assembly into nanostructures triggers jet-like release within seconds. Moreover, we exploit this self-assembly-mediated release to deliver other molecular species that are transported as cargo. These results demonstrate the role of self-assembly in modulating the transport of peptides across interfaces.
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Affiliation(s)
- Aviad Levin
- Department of Chemistry , University of Cambridge , Cambridge CB2 1EW , United Kingdom
| | - Thomas C T Michaels
- Department of Chemistry , University of Cambridge , Cambridge CB2 1EW , United Kingdom
- Paulson School of Engineering and Applied Science , Harvard University , Cambridge , Massachusetts 02138 , United States
| | - Thomas O Mason
- Department of Chemistry , University of Cambridge , Cambridge CB2 1EW , United Kingdom
| | - Thomas Müller
- Department of Chemistry , University of Cambridge , Cambridge CB2 1EW , United Kingdom
| | | | - Lakshminarayanan Mahadevan
- Paulson School of Engineering and Applied Science , Harvard University , Cambridge , Massachusetts 02138 , United States
| | - Michael E Cates
- DAMTP, Centre for Mathematical Sciences , University of Cambridge , Cambridge CB3 0WA , United Kingdom
| | | | - Tuomas P J Knowles
- Department of Chemistry , University of Cambridge , Cambridge CB2 1EW , United Kingdom
- Cavendish Laboratory , University of Cambridge , Cambridge CB3 0HE , United Kingdom
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21
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Zhao X, Liu Y, Yu Y, Huang Q, Ji W, Li J, Zhao Y. Hierarchically porous composite microparticles from microfluidics for controllable drug delivery. NANOSCALE 2018; 10:12595-12604. [PMID: 29938277 DOI: 10.1039/c8nr03728k] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Abdominal wall defect repair remains a major clinical need, and a particle-based controllable drug delivery system offers a solution to this problem. Here, we present a new type of hierarchically porous microparticles (HPMs) composed of poly(lactic-co-glycolic acid) (PLGA) and hollow mesoporous silica nanoparticles (HMSNs) for the delivery. The HPMs are generated by drying microfluidic emulsion templates of HMSNs-dispersed PLGA solution. The resultant HPMs have tailorable porous structures, that provide a three-hierarchy architecture for the controlled release of actives. The first hierarchy is formed for controlling the drug release via physical absorption as a result of the presence of the HMSNs in the HPMs. The second hierarchy channels with small pores scattered throughout the surface of the HPMs are formed during evaporation of the solvent. The third hierarchy with openings on the surface of the HPMs is formed as a result of the inner droplets leaking out of the double emulsion templates during the PLGA solidification. Thus, by manipulating the flow of solutions during the microfluidic emulsification, the porous structures of HPMs can be easily and precisely adjusted, and the loaded drugs are delivered at the required rate. These features of the HPMs make them ideal for repairing abdominal wall defects.
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Affiliation(s)
- Xin Zhao
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, P. R. China.
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22
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Mou C, Wang W, Li Z, Ju X, Xie R, Deng N, Wei J, Liu Z, Chu L. Trojan-Horse-Like Stimuli-Responsive Microcapsules. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1700960. [PMID: 29938173 PMCID: PMC6010793 DOI: 10.1002/advs.201700960] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Revised: 02/06/2018] [Indexed: 05/08/2023]
Abstract
Multicompartment microcapsules, with each compartment protected by a distinct stimuli-responsive shell for versatile controlled release, are highly desired for developing new-generation microcarriers. Although many multicompartmental microcapsules have been created, most cannot combine different release styles to achieve flexible programmed sequential release. Here, one-step template synthesis of controllable Trojan-horse-like stimuli-responsive microcapsules is reported with capsule-in-capsule structures from microfluidic quadruple emulsions for diverse programmed sequential release. The nested inner and outer capsule compartments can separately encapsulate different contents, while their two stimuli-responsive hydrogel shells can individually control the content release from each capsule compartment for versatile sequential release. This is demonstrated by using three types of Trojan-horse-like stimuli-responsive microcapsules, with different combinations of release styles for flexible programmed sequential release. The proposed microcapsules provide novel advanced candidates for developing new-generation microcarriers for diverse, efficient applications.
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Affiliation(s)
- Chuan‐Lin Mou
- School of Chemical EngineeringSichuan UniversityChengduSichuan610065China
- College of Chemistry and Chemical EngineeringOil & Gas Field Applied Chemistry Key Laboratory of Sichuan ProvinceSouthwest Petroleum UniversityChengduSichuan610500China
| | - Wei Wang
- School of Chemical EngineeringSichuan UniversityChengduSichuan610065China
- State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengduSichuan610065China
| | - Zhi‐Lu Li
- School of Chemical EngineeringSichuan UniversityChengduSichuan610065China
| | - Xiao‐Jie Ju
- School of Chemical EngineeringSichuan UniversityChengduSichuan610065China
- State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengduSichuan610065China
| | - Rui Xie
- School of Chemical EngineeringSichuan UniversityChengduSichuan610065China
- State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengduSichuan610065China
| | - Nan‐Nan Deng
- School of Chemical EngineeringSichuan UniversityChengduSichuan610065China
| | - Jie Wei
- School of Chemical EngineeringSichuan UniversityChengduSichuan610065China
| | - Zhuang Liu
- School of Chemical EngineeringSichuan UniversityChengduSichuan610065China
- State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengduSichuan610065China
| | - Liang‐Yin Chu
- School of Chemical EngineeringSichuan UniversityChengduSichuan610065China
- State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengduSichuan610065China
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23
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Zou Y, Xia Y, Meng F, Zhang J, Zhong Z. GE11-Directed Functional Polymersomal Doxorubicin as an Advanced Alternative to Clinical Liposomal Formulation for Ovarian Cancer Treatment. Mol Pharm 2018; 15:3664-3671. [PMID: 29570299 DOI: 10.1021/acs.molpharmaceut.8b00024] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Ovarian cancer as a recurrent disease is often refractory to treatment including pegylated liposomal doxorubicin hydrochloride (Lipo-Dox). Here, GE11 peptide-modified reversibly cross-linked polymersomal doxorubicin (GE11-PS-Dox) was investigated as an advanced treatment for SKOV3 human ovarian tumors, which overexpress epidermal growth factor receptor (EGFR). The in vitro experiments using SKOV3 cancer cells demonstrated that GE11-PS-Dox induced obviously higher cellular uptake, Dox delivery to the nuclei, and antitumor activity than the nontargeted PS-Dox and Lipo-Dox controls. In vivo biodistribution experiments displayed 2.5-fold higher tumor accumulation for GE11-PS-Dox as compared to Lipo-Dox. Notably, GE11-PS-Dox could effectively suppress the progression of SKOV3 tumors and cause little adverse effects at 12 mg of Dox equiv/kg, leading to a remarkably increased survival rate of 100% over 78 days. In contrast, continued tumor growth and body weight loss were discerned for Lipo-Dox treated mice at 6 mg of Dox equiv/kg. Moreover, a single dose of GE11-PS-Dox at 60 mg of Dox equiv/kg showed also effective treatment and low toxicity toward SKOV3-tumor bearing mice. GE11-directed reversibly cross-linked polymersomal doxorubicin has emerged as an advanced alternative to Lipo-Dox for treatment of EGFR-overexpressing ovarian cancers.
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Affiliation(s)
- Yan Zou
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , P. R. China.,International Joint Centre for Biomedical Innovation, School of Life Sciences , Henan University , Jin Ming Avenue , Kaifeng , Henan 475004 , China
| | - Yifeng Xia
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , P. R. China
| | - Fenghua Meng
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , P. R. China
| | - Jian Zhang
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , P. R. China
| | - Zhiyuan Zhong
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , P. R. China
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24
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Arriaga LR, Rodríguez-García R, Moleiro LH, Prévost S, López-Montero I, Hellweg T, Monroy F. Dissipative dynamics of fluid lipid membranes enriched in cholesterol. Adv Colloid Interface Sci 2017; 247:514-520. [PMID: 28755780 DOI: 10.1016/j.cis.2017.07.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Revised: 07/08/2017] [Accepted: 07/08/2017] [Indexed: 01/26/2023]
Abstract
Cholesterol is an intriguing component of fluid lipid membranes: It makes them stiffer but also more fluid. Despite the enormous biological significance of this complex dynamical behavior, which blends aspects of membrane elasticity with viscous friction, their mechanical bases remain however poorly understood. Here, we show that the incorporation of physiologically relevant contents of cholesterol in model fluid membranes produces a fourfold increase in the membrane bending modulus. However, the increase in the compression rigidity that we measure is only twofold; this indicates that cholesterol increases coupling between the two membrane leaflets. In addition, we show that although cholesterol makes each membrane leaflet more fluid, it increases the friction between the membrane leaflets. This dissipative dynamics causes opposite but advantageous effects over different membrane motions: It allows the membrane to rearrange quickly in the lateral dimension, and to simultaneously dissipate out-of-plane stresses through friction between the two membrane leaflets. Moreover, our results provide a clear correlation between coupling and friction of membrane leaflets. Furthermore, we show that these rigid membranes are optimal to resist slow deformations with minimum energy dissipation; their optimized stability might be exploited to design soft technological microsystems with an encoded mechanics, vesicles or capsules for instance, useful beyond classical applications as model biophysical systems.
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Affiliation(s)
- Laura R Arriaga
- Dpto. Química Física I, Universidad Complutense, E-28040 Madrid, Spain; Translational Biophysics Unit, Instituto de Investigacion Biomédica Hospital Doce de Octubre (i+12), E-28041 Madrid, Spain
| | | | - Lara H Moleiro
- Dpto. Química Física I, Universidad Complutense, E-28040 Madrid, Spain; Translational Biophysics Unit, Instituto de Investigacion Biomédica Hospital Doce de Octubre (i+12), E-28041 Madrid, Spain; Fakultät für Chemie Physikalische und Biophysikalische Chemie (PC III), Universität Bielefeld, Universitätsstr. 25, D-33615 Bielefeld, Germany
| | - Sylvain Prévost
- Institut Laue-Langevin, 71 avenue des Martyrs, F-38042 Grenoble, France; Helmholtz-Center-Berlin, Hahn-Meitner-Platz 1, D-14109 Berlin, Germany; Stranski-Laboratorium, Straße des 17. Juni 124, Technische Universität Berlin, D-10623 Berlin, Germany
| | | | - Thomas Hellweg
- Fakultät für Chemie Physikalische und Biophysikalische Chemie (PC III), Universität Bielefeld, Universitätsstr. 25, D-33615 Bielefeld, Germany
| | - Francisco Monroy
- Dpto. Química Física I, Universidad Complutense, E-28040 Madrid, Spain; Translational Biophysics Unit, Instituto de Investigacion Biomédica Hospital Doce de Octubre (i+12), E-28041 Madrid, Spain.
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25
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Huang Y, Kim SH, Arriaga LR. Emulsion templated vesicles with symmetric or asymmetric membranes. Adv Colloid Interface Sci 2017; 247:413-425. [PMID: 28802479 DOI: 10.1016/j.cis.2017.07.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 07/13/2017] [Accepted: 07/13/2017] [Indexed: 10/19/2022]
Abstract
Emulsion droplets with well-controlled topologies are used as templates for forming vesicles with either symmetric or asymmetric membranes. This review summarizes the available technology to produce these templates, the strategies and critical parameters involved in the transformation of emulsion droplets into vesicles, and the properties of the generated vesicles, with a special focus on the composition and material distribution of the vesicle membrane. Here, we also address limitations in the field and point to future fundamental and applied research in the area.
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26
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Abstract
Droplet microfluidics generates and manipulates discrete droplets through immiscible multiphase flows inside microchannels. Due to its remarkable advantages, droplet microfluidics bears significant value in an extremely wide range of area. In this review, we provide a comprehensive and in-depth insight into droplet microfluidics, covering fundamental research from microfluidic chip fabrication and droplet generation to the applications of droplets in bio(chemical) analysis and materials generation. The purpose of this review is to convey the fundamentals of droplet microfluidics, a critical analysis on its current status and challenges, and opinions on its future development. We believe this review will promote communications among biology, chemistry, physics, and materials science.
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Affiliation(s)
- Luoran Shang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University , Nanjing 210096, China
| | - Yao Cheng
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University , Nanjing 210096, China
| | - Yuanjin Zhao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University , Nanjing 210096, China
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27
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Jeong E, Lee G, Han SW, Lee WJ, Choi HS, Lee Y, Kim JW. Polyelectrolyte/silica-layered hydrogel microcapsules as vehicles with remarkable shell impermeability. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2016.10.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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28
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Abstract
We characterize the porosity of hydrogels by imaging the displacement trajectories of embedded tracer particles. This offers the possibility of characterizing the size and projected shape of individual pores as well as direct, real-space maps of heterogeneous porosity and its distribution. The scheme shows that when fluorescent spherical particles treated to avoid specific adsorption are loaded into the gel, their displacement trajectories from Brownian motion report on the size and projected shape in which the pore resides, convoluted by the particle size. Of special interest is how pores and their distribution respond to stimuli. These ideas are validated in agarose gels loaded with latex particles stabilized by adsorbed bovine serum albumin. Gels heated from room temperature produced an increasingly more monodisperse pore size distribution because increasing temperature preferentially enlarges smaller pores, but this was irreversible upon cooling, and shearing agarose gels beyond the yield point destroyed larger pores preferably. The method is considered to be generalizable beyond the agarose system presented here as proof of concept.
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Affiliation(s)
- Lingxiang Jiang
- Department of Materials Science and Engineering, Jinan University , Guangzhou 510632, China
| | - Steve Granick
- IBS Center for Soft and Living Matter and UNIST, Ulsan 689-798, South Korea
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29
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30
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Lai WF, He ZD. Design and fabrication of hydrogel-based nanoparticulate systems for in vivo drug delivery. J Control Release 2016; 243:269-282. [DOI: 10.1016/j.jconrel.2016.10.013] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Revised: 10/12/2016] [Accepted: 10/12/2016] [Indexed: 12/27/2022]
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31
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Microfluidic fabrication of polymersomes enclosing an active Belousov-Zhabotinsky (BZ) reaction: Effect on their stability of solute concentrations in the external media. Colloids Surf B Biointerfaces 2016; 146:406-14. [DOI: 10.1016/j.colsurfb.2016.06.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 06/03/2016] [Accepted: 06/05/2016] [Indexed: 12/11/2022]
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32
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Lee TY, Choi TM, Shim TS, Frijns RAM, Kim SH. Microfluidic production of multiple emulsions and functional microcapsules. LAB ON A CHIP 2016; 16:3415-40. [PMID: 27470590 DOI: 10.1039/c6lc00809g] [Citation(s) in RCA: 117] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Recent advances in microfluidics have enabled the controlled production of multiple-emulsion drops with onion-like topology. The multiple-emulsion drops possess an intrinsic core-shell geometry, which makes them useful as templates to create microcapsules with a solid membrane. High flexibility in the selection of materials and hierarchical order, achieved by microfluidic technologies, has provided versatility in the membrane properties and microcapsule functions. The microcapsules are now designed not just for storage and release of encapsulants but for sensing microenvironments, developing structural colours, and many other uses. This article reviews the current state of the art in the microfluidic-based production of multiple-emulsion drops and functional microcapsules. The three main sections of this paper discuss distinct microfluidic techniques developed for the generation of multiple emulsions, four representative methods used for solid membrane formation, and various applications of functional microcapsules. Finally, we outline the current limitations and future perspectives of microfluidics and microcapsules.
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Affiliation(s)
- Tae Yong Lee
- Department of Chemical and Biomolecular Engineering, KAIST, Daejeon, South Korea.
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33
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Martino C, deMello AJ. Droplet-based microfluidics for artificial cell generation: a brief review. Interface Focus 2016; 6:20160011. [PMID: 27499841 PMCID: PMC4918832 DOI: 10.1098/rsfs.2016.0011] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Artificial cells are best defined as micrometre-sized structures able to mimic many of the morphological and functional characteristics of a living cell. In this mini-review, we describe progress in the application of droplet-based microfluidics for the generation of artificial cells and protocells.
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Affiliation(s)
- Chiara Martino
- Department of Chemistry and Applied Biosciences, Institute for Chemical and Bioengineering, ETH Zürich, Vladimir Prelog Weg 1, Zürich 8093, Switzerland
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34
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35
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do Nascimento DF, Arriaga LR, Eggersdorfer M, Ziblat R, Marques MDFV, Reynaud F, Koehler SA, Weitz DA. Microfluidic Fabrication of Pluronic Vesicles with Controlled Permeability. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:5350-5. [PMID: 27192611 DOI: 10.1021/acs.langmuir.6b01399] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Block copolymers with a low hydrophilic-to-lipophilic balance form membranes that are highly permeable to hydrophilic molecules. Polymersomes with this type of membrane enable the controllable release of molecules without membrane rupture. However, these polymersomes are difficult to assemble because of their low hydrophobicity. Here, we report a microfluidic approach to the production of these polymersomes using double-emulsion drops with ultrathin shells as templates. The small thickness of the middle oil phase enables the attraction of the hydrophobic blocks of the polymers adsorbed at each of the oil/water interfaces of the double emulsions; this results in the dewetting of the oil from the surface of the innermost water drops of the double emulsions and the ultimate formation of the polymersome. This approach to polymersome fabrication enables control of the vesicle size and results in the efficient encapsulation of hydrophilic ingredients that can be released through the polymer membrane without membrane rupture. We apply our approach to the fabrication of Pluronic L121 vesicles and characterize the permeability of their membranes. Furthermore, we show that membrane permeability can be tuned by blending different Pluronic polymers. Our work thus describes a route to producing Pluronic vesicles that are useful for the controlled release of hydrophilic ingredients.
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Affiliation(s)
- Débora F do Nascimento
- School of Engineering and Applied Sciences and Department of Physics, Harvard University , Cambridge, Massachusetts 02138, United States
- Instituto de Macromoléculas Professora Eloisa Mano, Universidade Federal do Rio de Janeiro , Rio de Janeiro 21941-598, Brasil
| | - Laura R Arriaga
- School of Engineering and Applied Sciences and Department of Physics, Harvard University , Cambridge, Massachusetts 02138, United States
| | - Max Eggersdorfer
- School of Engineering and Applied Sciences and Department of Physics, Harvard University , Cambridge, Massachusetts 02138, United States
| | - Roy Ziblat
- School of Engineering and Applied Sciences and Department of Physics, Harvard University , Cambridge, Massachusetts 02138, United States
| | - Maria de Fátima V Marques
- Instituto de Macromoléculas Professora Eloisa Mano, Universidade Federal do Rio de Janeiro , Rio de Janeiro 21941-598, Brasil
| | - Franceline Reynaud
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro , Rio de Janeiro 21941-902, Brasil
| | - Stephan A Koehler
- School of Engineering and Applied Sciences and Department of Physics, Harvard University , Cambridge, Massachusetts 02138, United States
| | - David A Weitz
- School of Engineering and Applied Sciences and Department of Physics, Harvard University , Cambridge, Massachusetts 02138, United States
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36
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Wang H, Gu X, Wang C. Self-Propelling Hydrogel/Emulsion-Hydrogel Soft Motors for Water Purification. ACS APPLIED MATERIALS & INTERFACES 2016; 8:9413-22. [PMID: 27004569 DOI: 10.1021/acsami.6b00197] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We fabricate a kind of catalytic self-propelling hydrogel soft motor (H-motor) via a facile injection loading method with low energy consumption. The factors influencing the practicability of H-motors, including locomotive ability and reusability, are investigated. The succession of rapid bubble evolution and propulsion endows the millimeter-sized columnar H-motors with length/diameter of 1 a remarkable speed of 3.84 mm s(-1) in 10% (w/w) hydrogen peroxide (H2O2) solution. Moreover, the H-motors maintain undiminished propulsion capability and functionality even after repeated loading for 6 times. Additionally, we also fabricate emulsion-hydrogel soft motors (E-H-motors) templated from the oil/water (O/W) emulsion for the first time, which exhibit a faster speed of 4.33 mm s(-1) under the same conditions. It can be ascribed to the additional liberation of low-boiling oil phase stored in the emulsion-hydrogels caused by catalytic reaction heat, which is appropriate for larger propulsive situations. The stabilized, efficient, and reusable H-motors are selected for industrial effluents purification to fit the imperious demands about the disposal of organic pollutants in water. The synergy effect between catalytic degradation and enhanced intermixing of the fluid flow around the miniaturized soft motors gives rise to an effective and exhaustive removal of organic contaminants.
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Affiliation(s)
- Hui Wang
- Research Institute of Materials Science, South China University of Technology , Guangzhou, Guangdong 510640, China
| | - Xiaoyu Gu
- Research Institute of Materials Science, South China University of Technology , Guangzhou, Guangdong 510640, China
| | - Chaoyang Wang
- Research Institute of Materials Science, South China University of Technology , Guangzhou, Guangdong 510640, China
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High-throughput screening approaches and combinatorial development of biomaterials using microfluidics. Acta Biomater 2016; 34:1-20. [PMID: 26361719 DOI: 10.1016/j.actbio.2015.09.009] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 09/07/2015] [Accepted: 09/08/2015] [Indexed: 12/11/2022]
Abstract
From the first microfluidic devices used for analysis of single metabolic by-products to highly complex multicompartmental co-culture organ-on-chip platforms, efforts of many multidisciplinary teams around the world have been invested in overcoming the limitations of conventional research methods in the biomedical field. Close spatial and temporal control over fluids and physical parameters, integration of sensors for direct read-out as well as the possibility to increase throughput of screening through parallelization, multiplexing and automation are some of the advantages of microfluidic over conventional, 2D tissue culture in vitro systems. Moreover, small volumes and relatively small cell numbers used in experimental set-ups involving microfluidics, can potentially decrease research cost. On the other hand, these small volumes and numbers of cells also mean that many of the conventional molecular biology or biochemistry assays cannot be directly applied to experiments that are performed in microfluidic platforms. Development of different types of assays and evidence that such assays are indeed a suitable alternative to conventional ones is a step that needs to be taken in order to have microfluidics-based platforms fully adopted in biomedical research. In this review, rather than providing a comprehensive overview of the literature on microfluidics, we aim to discuss developments in the field of microfluidics that can aid advancement of biomedical research, with emphasis on the field of biomaterials. Three important topics will be discussed, being: screening, in particular high-throughput and combinatorial screening; mimicking of natural microenvironment ranging from 3D hydrogel-based cellular niches to organ-on-chip devices; and production of biomaterials with closely controlled properties. While important technical aspects of various platforms will be discussed, the focus is mainly on their applications, including the state-of-the-art, future perspectives and challenges. STATEMENT OF SIGNIFICANCE Microfluidics, being a technology characterized by the engineered manipulation of fluids at the submillimeter scale, offers some interesting tools that can advance biomedical research and development. Screening platforms based on microfluidic technologies that allow high-throughput and combinatorial screening may lead to breakthrough discoveries not only in basic research but also relevant to clinical application. This is further strengthened by the fact that reliability of such screens may improve, since microfluidic systems allow close mimicking of physiological conditions. Finally, microfluidic systems are also very promising as micro factories of a new generation of natural or synthetic biomaterials and constructs, with finely controlled properties.
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Extensible Multiplex Real-time PCR of MicroRNA Using Microparticles. Sci Rep 2016; 6:22975. [PMID: 26964639 PMCID: PMC4786821 DOI: 10.1038/srep22975] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 02/23/2016] [Indexed: 01/08/2023] Open
Abstract
Multiplex quantitative real-time PCR (qPCR), which measures multiple DNAs in a given sample, has received significant attention as a mean of verifying the rapidly increasing genetic targets of interest in single phenotype. Here we suggest a readily extensible qPCR for the expression analysis of multiple microRNA (miRNA) targets using microparticles of primer-immobilized networks as discrete reactors. Individual particles, 200~500 μm in diameter, are identified by two-dimensional codes engraved into the particles and the non-fluorescent encoding allows high-fidelity acquisition of signal in real-time PCR. During the course of PCR, the amplicons accumulate in the volume of the particles with high reliability and amplification efficiency over 95%. In a quick assay comprising of tens of particles holding different primers, each particle brings the independent real-time amplification curve representing the quantitative information of each target. Limited amount of sample was analyzed simultaneously in single chamber through this highly multiplexed qPCR; 10 kinds of miRNAs from purified extracellular vesicles (EVs).
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39
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Lee H, Choi CH, Abbaspourrad A, Wesner C, Caggioni M, Zhu T, Weitz DA. Encapsulation and Enhanced Retention of Fragrance in Polymer Microcapsules. ACS APPLIED MATERIALS & INTERFACES 2016; 8:4007-13. [PMID: 26799189 DOI: 10.1021/acsami.5b11351] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Fragrances are amphiphilic and highly volatile, all of which makes them a challenging cargo to efficiently encapsulate and retain in microcapsules using traditional approaches. We address these limitations by introducing a new strategy that combines bulk and microfluidic emulsification: a stable fragrance-in-water (F/W) emulsion that is primarily prepared from bulk emulsification is incorporated within a polymer microcapsule via microfluidic emulsification. On the basis of the in-depth study of physicochemical properties of the microcapsules on fragrance leakage, we demonstrate that enhanced retention of fragrance can be achieved by using a polar polymeric shell and forming a hydrogel network within the microcapsule. We further extend the utility of these microcapsules by demonstrating the enhanced retention of encapsulated fragrance in powder state.
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Affiliation(s)
- Hyomin Lee
- School of Engineering and Applied Sciences and Department of Physics, Harvard University , Cambridge, Massachusetts 02138, United States
| | - Chang-Hyung Choi
- School of Engineering and Applied Sciences and Department of Physics, Harvard University , Cambridge, Massachusetts 02138, United States
| | - Alireza Abbaspourrad
- Department of Food Science, Cornell University , Ithaca, New York 14853, United States
| | - Chris Wesner
- Corporate Engineering, The Procter & Gamble Company , Cincinnati, Ohio 45069, United States
| | - Marco Caggioni
- Corporate Engineering, The Procter & Gamble Company , Cincinnati, Ohio 45069, United States
| | - Taotao Zhu
- Corporate Engineering, The Procter & Gamble Company , Cincinnati, Ohio 45069, United States
| | - David A Weitz
- School of Engineering and Applied Sciences and Department of Physics, Harvard University , Cambridge, Massachusetts 02138, United States
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40
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Lai WF, Shum HC. A stimuli-responsive nanoparticulate system using poly(ethylenimine)-graft-polysorbate for controlled protein release. NANOSCALE 2016; 8:517-528. [PMID: 26676890 DOI: 10.1039/c5nr06641g] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Proteins have emerged as an important class of therapeutic agents due to their high specificity in their physiological actions. Over the years, diverse protein carriers have been developed; however, some concerns, such as the relatively low loading efficiency and release sustainability, have limited the efficiency of protein delivery. This study reports the use of hydrogel nanoparticles based on a novel copolymer, poly(ethylenimine)-graft-polysorbate (PEIP), as effective protein carriers. The copolymer is fabricated by grafting poly(ethylenimine) (PEI) with polysorbate 20 using carbonyldiimidazole chemistry. Its cytotoxicity is much lower than that of unmodified PEI in RGC5 and HEK293 cells. In comparison with nanoparticles formed by unmodified PEI, our nanoparticles are not only more efficient in cellular internalization, as indicated by the 5- to 6-fold reduction in the time they take to cause 90% of cells to exhibit intracellular fluorescence, but also give a protein loading efficiency as high as 70-90%. These, together with the salt-responsiveness of the nanoparticles in protein release and the retention of the activity of the loaded protein, suggest that PEIP and its hydrogel nanoparticles warrant further development as protein carriers for therapeutic applications.
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Affiliation(s)
- Wing-Fu Lai
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong Special Administrative Region, China.
| | - Ho Cheung Shum
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong Special Administrative Region, China. and HKU-Shenzhen Institute of Research and Innovation, Shenzhen, Guangdong, China
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41
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Håti AG, Arnfinnsdottir NB, Østevold C, Sletmoen M, Etienne G, Amstad E, Stokke BT. Microarrays for the study of compartmentalized microorganisms in alginate microbeads and (W/O/W) double emulsions. RSC Adv 2016. [DOI: 10.1039/c6ra23945e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Here, we present two array platforms for small (50–100 μm) cell-containing 3D compartments prepared by droplet-based microfluidics.
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Affiliation(s)
- Armend G. Håti
- Biophysics and Medical Technology
- Dept. of Physics
- NTNU
- Norwegian University of Science and Technology
- NO-7491 Trondheim
| | - Nina Bjørk Arnfinnsdottir
- Biophysics and Medical Technology
- Dept. of Physics
- NTNU
- Norwegian University of Science and Technology
- NO-7491 Trondheim
| | - Camilla Østevold
- Biophysics and Medical Technology
- Dept. of Physics
- NTNU
- Norwegian University of Science and Technology
- NO-7491 Trondheim
| | - Marit Sletmoen
- Dept. of Biotechnology
- NTNU
- Norwegian University of Science and Technology
- NO-7491 Trondheim
- Norway
| | - Gianluca Etienne
- Soft Materials Laboratory (SMaL)
- Institute of Materials
- École Polytechnique Fédérale de Lausanne
- 1015 Lausanne
- Switzerland
| | - Esther Amstad
- Soft Materials Laboratory (SMaL)
- Institute of Materials
- École Polytechnique Fédérale de Lausanne
- 1015 Lausanne
- Switzerland
| | - Bjørn T. Stokke
- Biophysics and Medical Technology
- Dept. of Physics
- NTNU
- Norwegian University of Science and Technology
- NO-7491 Trondheim
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42
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Piradashvili K, Alexandrino EM, Wurm FR, Landfester K. Reactions and Polymerizations at the Liquid–Liquid Interface. Chem Rev 2015; 116:2141-69. [DOI: 10.1021/acs.chemrev.5b00567] [Citation(s) in RCA: 156] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Keti Piradashvili
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | | | - Frederik R. Wurm
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Katharina Landfester
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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43
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Chen Y, Xu JH, Luo GS. The dynamic adsorption of different surfactants on droplet formation in coaxial microfluidic devices. Chem Eng Sci 2015. [DOI: 10.1016/j.ces.2015.08.048] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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44
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Gaitzsch J, Huang X, Voit B. Engineering Functional Polymer Capsules toward Smart Nanoreactors. Chem Rev 2015; 116:1053-93. [DOI: 10.1021/acs.chemrev.5b00241] [Citation(s) in RCA: 300] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jens Gaitzsch
- Department
of Chemistry, University College London, London WC1H 0AJ, United Kingdom
- Department
of Chemistry, University of Basel, Klingelbergstrasse 80, 4056 Basel, Basel-Stadt, Switzerland
| | - Xin Huang
- School
of Chemical Engineering and Technology, Harbin Institute of Technology, 150001 Harbin, Heilongjiang, China
| | - Brigitte Voit
- Leibniz-Institut fuer Polymerforschung Dresden e.V., Hohe Strasse 6, 01069 Dresden, Saxony, Germany
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45
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The dynamic mass transfer of surfactants upon droplet formation in coaxial microfluidic devices. Chem Eng Sci 2015. [DOI: 10.1016/j.ces.2015.04.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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46
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Lai WF, Shum HC. Hypromellose-graft-chitosan and Its Polyelectrolyte Complex as Novel Systems for Sustained Drug Delivery. ACS APPLIED MATERIALS & INTERFACES 2015; 7:10501-10510. [PMID: 25946653 DOI: 10.1021/acsami.5b01984] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Polyelectrolyte complexes formed between chitosan (CS) and anionic polymers have attracted increasing interest in drug delivery. In this study, CS is copolymerized with hypromellose via a coupling reagent-mediated approach to form a water-soluble, nontoxic CS derivative, namely hypromellose-graft-CS (HC), which is subsequently complexed with carboxymethylcellulose (CMC) to generate a polyampholytic hydrogel. When compared with conventional CS, HC is highly water-soluble across a wide pH range, and has a substantially higher pH buffering capacity to provide a pH-stable environment for delivery of drugs. In addition, the polyelectrolyte complex of HC exhibits a drug encapsulation efficiency of over 90% in all drugs tested, which is 1-2 fold higher than the efficiency attainable by the polyelectrolyte complex of conventional CS, with a 2-3 fold longer duration of sustained drug release. Our results indicate that as a novel polymer, HC has excellent promise for future pharmaceutical applications.
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Affiliation(s)
- Wing-Fu Lai
- †Department of Mechanical Engineering, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Ho Cheung Shum
- †Department of Mechanical Engineering, The University of Hong Kong, Hong Kong Special Administrative Region, China
- ‡HKU-Shenzhen Institute of Research and Innovation, Shenzhen, Guangdong 518000, China
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Martino C, Lee TY, Kim SH, deMello AJ. Microfluidic generation of PEG-b-PLA polymersomes containing alginate-based core hydrogel. BIOMICROFLUIDICS 2015; 9:024101. [PMID: 25825616 PMCID: PMC4352166 DOI: 10.1063/1.4914112] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 02/24/2015] [Indexed: 05/23/2023]
Abstract
Herein, we demonstrate a novel method for the generation of monodisperse cell-like structures containing a biocompatible hydrogel matrix surrounded by a membrane responsive to chemical cues. Specifically, we employ droplet-based microfluidics to generate PEG-PLA polymersomes encapsulating alginate in liquid form. We investigate alginate core gelation by creating an osmotic pressure gradient across the polymeric membrane that, through expansion, allows the passage of calcium ions. The effects of calcium concentration on the core gelation are explored.
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Affiliation(s)
- Chiara Martino
- Department of Chemistry and Applied Biosciences, Institute for Chemical and Bioengineering , ETH Zurich, Vladimir Prelog Weg 1, Zürich 8093, Switzerland
| | - Tae Yong Lee
- Department of Chemical and Biomolecular Engineering, KAIST , Daejeon, South Korea
| | - Shin-Hyun Kim
- Department of Chemical and Biomolecular Engineering, KAIST , Daejeon, South Korea
| | - Andrew J deMello
- Department of Chemistry and Applied Biosciences, Institute for Chemical and Bioengineering , ETH Zurich, Vladimir Prelog Weg 1, Zürich 8093, Switzerland
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49
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Dinu MV, Spulber M, Renggli K, Wu D, Monnier CA, Petri-Fink A, Bruns N. Filling Polymersomes with Polymers by Peroxidase-Catalyzed Atom Transfer Radical Polymerization. Macromol Rapid Commun 2015; 36:507-14. [DOI: 10.1002/marc.201400642] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 12/16/2014] [Indexed: 01/20/2023]
Affiliation(s)
- Maria Valentina Dinu
- Department of Chemistry; University of Basel; Klingelbergstrasse 80 4056 Basel Switzerland
| | - Mariana Spulber
- Department of Chemistry; University of Basel; Klingelbergstrasse 80 4056 Basel Switzerland
| | - Kasper Renggli
- Department of Chemistry; University of Basel; Klingelbergstrasse 80 4056 Basel Switzerland
- Department of Biological Engineering; Massachusetts Institute of Technology; 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - Dalin Wu
- Department of Chemistry; University of Basel; Klingelbergstrasse 80 4056 Basel Switzerland
| | - Christophe A. Monnier
- Adolphe Merkle Institute; University of Fribourg; Chemin des Verdiers 4 1700 Fribourg Switzerland
| | - Alke Petri-Fink
- Adolphe Merkle Institute; University of Fribourg; Chemin des Verdiers 4 1700 Fribourg Switzerland
| | - Nico Bruns
- Department of Chemistry; University of Basel; Klingelbergstrasse 80 4056 Basel Switzerland
- Adolphe Merkle Institute; University of Fribourg; Chemin des Verdiers 4 1700 Fribourg Switzerland
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50
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Guo M, Zhang W, Ding G, Guo D, Zhu J, Wang B, Punyapitak D, Cao Y. Preparation and characterization of enzyme-responsive emamectin benzoate microcapsules based on a copolymer matrix of silica–epichlorohydrin–carboxymethylcellulose. RSC Adv 2015. [DOI: 10.1039/c5ra17901g] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Novel enzyme-responsive emamectin benzoate microcapsules with remarkable loading ability and photo- and thermal stability were prepared for sustained crop protection.
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Affiliation(s)
- Mingcheng Guo
- College of Agriculture and Biotechnology
- China Agricultural University
- Beijing
- China
| | - Wenbing Zhang
- College of Agriculture and Biotechnology
- China Agricultural University
- Beijing
- China
| | - Guanglong Ding
- College of Agriculture and Biotechnology
- China Agricultural University
- Beijing
- China
| | - Dong Guo
- College of Agriculture and Biotechnology
- China Agricultural University
- Beijing
- China
| | - Juanli Zhu
- College of Agriculture and Biotechnology
- China Agricultural University
- Beijing
- China
| | - Baitao Wang
- College of Agriculture and Biotechnology
- China Agricultural University
- Beijing
- China
| | - Darunee Punyapitak
- College of Agriculture and Biotechnology
- China Agricultural University
- Beijing
- China
| | - Yongsong Cao
- College of Agriculture and Biotechnology
- China Agricultural University
- Beijing
- China
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