1
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Tahir N, Sharifi F, Khan TA, Khan MM, Madni A, Rehman M. Microfluidics: A versatile tool for developing, optimizing, and delivering nanomedicines. Nanomedicine (Lond) 2023. [DOI: 10.1016/b978-0-12-818627-5.00017-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023] Open
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2
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Mao X, Wang M, Jin S, Rao J, Deng R, Zhu J. Monodispersed polymer particles with tunable surface structures: Droplet
microfluidic‐assisted
fabrication and biomedical applications. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20210909] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xi Mao
- State Key Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST) Wuhan China
| | - Mian Wang
- State Key Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST) Wuhan China
| | - Shaohong Jin
- State Key Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST) Wuhan China
| | - Jingyi Rao
- State Key Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST) Wuhan China
| | - Renhua Deng
- State Key Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST) Wuhan China
| | - Jintao Zhu
- State Key Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST) Wuhan China
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3
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Design of electrode materials of nickel-cobalt compounds for aqueous symmetrical supercapacitor with large power and high energy density. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125243] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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4
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Affiliation(s)
- Kiran Raj M
- Department of Biomedical EngineeringNational University of Singapore Singapore 117576 Singapore
| | - Suman Chakraborty
- Department of Mechanical EngineeringIndian Institute of Technology Kharagpur Kharagpur 721302 India
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5
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Biodegradable and Porous Poly(lactic-co-glycolic acid) Microbeads for In vitro Evaluation of Negatively Charged Fluorescent Bacteria. Macromol Res 2019. [DOI: 10.1007/s13233-019-7104-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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6
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Rezvantalab S, Keshavarz Moraveji M. Microfluidic assisted synthesis of PLGA drug delivery systems. RSC Adv 2019; 9:2055-2072. [PMID: 35516107 PMCID: PMC9059828 DOI: 10.1039/c8ra08972h] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 12/16/2018] [Indexed: 12/28/2022] Open
Abstract
Poly(lactic-co-glycolic acid) (PLGA) is a biocompatible and biodegradable polymer that recently attracted attention for use as part of drug delivery systems (DDS). In this context, there is an emerging need for a rapid, reliable and reproducible method of synthesis. Here, microfluidic systems provide great opportunities for synthesizing carriers in a tightly controlled manner and with low consumption of materials, energy and time. These miniature devices have been the focus of recent research since they can address the challenges inherent to the bulk system, e.g. low drug loading efficiency and encapsulation, broad size distribution and burst initial release. In this article, we provide an overview of current microfluidic systems used in drug delivery production, with a special focus on PLGA-based DDS. In this context, we highlight the advantages associated with the use of microchip systems in the fabrication of nanoparticles (NPs) and microparticles (MPs), e.g. in achieving complex morphologies. Furthermore, we discuss the challenges for selecting proper microfluidics for targeted DDS production in a translational setting and introduce strategies that are used to overcome microfluidics shortcomings, like low throughput for production. Poly(lactic-co-glycolic acid) (PLGA) is a biocompatible and biodegradable polymer that recently attracted attention for use as part of drug delivery systems (DDS).![]()
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Affiliation(s)
- Sima Rezvantalab
- Department of Chemical Engineering
- Amirkabir University of Technology (Tehran Polytechnic)
- Tehran
- Iran
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7
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Liu HT, Wang H, Wei WB, Liu H, Jiang L, Qin JH. A Microfluidic Strategy for Controllable Generation of Water-in-Water Droplets as Biocompatible Microcarriers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1801095. [PMID: 30091845 DOI: 10.1002/smll.201801095] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 07/16/2018] [Indexed: 05/14/2023]
Abstract
Droplet microfluidics has been widely applied in functional microparticles fabricating, tissue engineering, and drug screening due to its high throughput and great controllability. However, most of the current droplet microfluidics are dependent on water-in-oil (W/O) systems, which involve organic reagents, thus limiting their broader biological applications. In this work, a new microfluidic strategy is described for controllable and high-throughput generation of monodispersed water-in-water (W/W) droplets. Solutions of polyethylene glycol and dextran are used as continuous and dispersed phases, respectively, without any organic reagents or surfactants. The size of W/W droplets can be precisely adjusted by changing the flow rate of dispersed and continuous phases and the valve switch cycle. In addition, uniform cell-laden microgels are fabricated by introducing the alginate component and rat pancreatic islet (β-TC6) cell suspension to the dispersed phase. The encapsulated islet cells retain high viability and the function of insulin secretion after cultivation for 7 days. The high-throughput droplet microfluidic system with high biocompatibility is stable, controllable, and flexible, which can boost various chemical and biological applications, such as bio-oriented microparticles synthesizing, microcarriers fabricating, tissue engineering, etc.
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Affiliation(s)
- Hai-Tao Liu
- Division of Biotechnology, CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hui Wang
- Division of Biotechnology, CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wen-Bo Wei
- Division of Biotechnology, CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Hui Liu
- Division of Biotechnology, CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Lei Jiang
- Division of Biotechnology, CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Jian-Hua Qin
- Division of Biotechnology, CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China
- CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China
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8
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Ma J, Wang Y, Liu J. Biomaterials Meet Microfluidics: From Synthesis Technologies to Biological Applications. MICROMACHINES 2017; 8:E255. [PMID: 30400445 PMCID: PMC6190052 DOI: 10.3390/mi8080255] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 07/28/2017] [Accepted: 08/14/2017] [Indexed: 02/07/2023]
Abstract
Microfluidics is characterized by laminar flow at micro-scale dimension, high surface to volume ratio, and markedly improved heat/mass transfer. In addition, together with advantages of large-scale integration and flexible manipulation, microfluidic technology has been rapidly developed as one of the most important platforms in the field of functional biomaterial synthesis. Compared to biomaterials assisted by conventional strategies, functional biomaterials synthesized by microfluidics are with superior properties and performances, due to their controllable morphology and composition, which have shown great advantages and potential in the field of biomedicine, biosensing, and tissue engineering. Take the significance of microfluidic engineered biomaterials into consideration; this review highlights the microfluidic synthesis technologies and biomedical applications of materials. We divide microfluidic based biomaterials into four kinds. According to the material dimensionality, it includes: 0D (particulate materials), 1D (fibrous materials), 2D (sheet materials), and 3D (construct forms of materials). In particular, micro/nano-particles and micro/nano-fibers are introduced respectively. This classification standard could include all of the microfluidic biomaterials, and we envision introducing a comprehensive and overall evaluation and presentation of microfluidic based biomaterials and their applications.
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Affiliation(s)
- Jingyun Ma
- Regenerative Medicine Center, the First Affiliated Hospital of Dalian Medical University, Dalian 116011, China.
- Stem Cell Clinical Research Center, the First Affiliated Hospital of Dalian Medical University, Dalian 116011, China.
| | - Yachen Wang
- Regenerative Medicine Center, the First Affiliated Hospital of Dalian Medical University, Dalian 116011, China.
- Stem Cell Clinical Research Center, the First Affiliated Hospital of Dalian Medical University, Dalian 116011, China.
| | - Jing Liu
- Regenerative Medicine Center, the First Affiliated Hospital of Dalian Medical University, Dalian 116011, China.
- Stem Cell Clinical Research Center, the First Affiliated Hospital of Dalian Medical University, Dalian 116011, China.
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9
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Li T, Zhao L, Liu W, Xu J, Wang J. Simple and reusable off-the-shelf microfluidic devices for the versatile generation of droplets. LAB ON A CHIP 2016; 16:4718-4724. [PMID: 27809329 DOI: 10.1039/c6lc00967k] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A novel, facile, and flexible approach for the easy assembly of microfluidic droplet devices using commercially available components is presented. Three different types of devices have been designed and tested, and the experimental results indicated that the devices offer a promising platform for the controllable generation of highly monodisperse droplets with sizes in the micrometer to millimeter diameter ranges. The advantages of the devices include their low cost, portability, reusability, high accuracy, and reliability. Most importantly, the simple and reversible combination of the different components allows the flexible design of versatile devices for fabricating multiple droplets with diverse structures. Therefore, the devices constitute a powerful microplatform that can be used for scientific and industrial applications.
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Affiliation(s)
- Tianbao Li
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Lei Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Wenming Liu
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Juan Xu
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Jinyi Wang
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, China. and College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China
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10
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Bhuptani RS, Patravale VB. Porous microscaffolds for 3D culture of dental pulp mesenchymal stem cells. Int J Pharm 2016; 515:555-564. [PMID: 27989823 DOI: 10.1016/j.ijpharm.2016.10.040] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 10/11/2016] [Accepted: 10/18/2016] [Indexed: 12/11/2022]
Abstract
The collective power of stem cells due to their evident advantages is incessantly investigated in regenerative medicine to be the next generation exceptional remedy for tissue regeneration and treatment of diseases. Stem cells are highly sensitive and a 3D culture environment is a requisite for its successful transplantation and integration with tissues. Porous microscaffolds can create a 3D microenvironment for growing stems cells, controlling their fate both in vitro and in vivo. In the present study, interconnected porous PLGA microscaffolds were fabricated, characterized and employed to propagate human dental pulp mesenchymal stem cells (DPMSCs) in vitro. The porous topography was investigated by scanning electron microscopy and the pore size was controlled by fabrication conditions such as the concentration of porogen. DPMSCs were cultured on microscaffolds and were evaluated for their morphology, attachment, proliferation, cell viability via MTT and molecular expression (RT-PCR). DPMSCs were adequately proliferated and adhered over the microscaffolds forming a 3D cell-microscaffold construct. The average number of DPMSCs grown on PLGA microscaffolds was significantly higher than monolayer 2D culture during 5th and 7th day. Moreover, cell viability and gene expression results together corroborated that microscaffolds maintained the viability, stemness and plasticity of the cultured dental pulp mesenchymal stem cells. The novel porous microscaffold developed acts as promising scaffold for 3D culture and survival and transplantation of stem cells for tissue engineering.
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Affiliation(s)
- Ronak S Bhuptani
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, N.P. Marg, Matunga (E), Mumbai 400019, Maharashtra, India
| | - Vandana B Patravale
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, N.P. Marg, Matunga (E), Mumbai 400019, Maharashtra, India.
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11
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Montazeri L, Bonakdar S, Taghipour M, Renaud P, Baharvand H. Modification of PDMS to fabricate PLGA microparticles by a double emulsion method in a single microfluidic device. LAB ON A CHIP 2016; 16:2596-2600. [PMID: 27334791 DOI: 10.1039/c6lc00437g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We present an easy, durable method to generate a partially hydrophilic/hydrophobic poly(dimethylsiloxane) (PDMS) microfluidic device. The functionality of this device was assessed in a double flow focusing design to fabricate core-shell structured poly(lactic-co-glycolic acid) (PLGA) microparticles (MPs).
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Affiliation(s)
- Leila Montazeri
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran. and Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | | | - Mojtaba Taghipour
- Microsystems Laboratory, École Polytechnique Fédérale de Lausanne, EPFL-STI-IMT-LMIS4, Station 17, Lausanne, 1015, Switzerland.
| | - Philippe Renaud
- Microsystems Laboratory, École Polytechnique Fédérale de Lausanne, EPFL-STI-IMT-LMIS4, Station 17, Lausanne, 1015, Switzerland.
| | - Hossein Baharvand
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran. and Department of Developmental Biology, University of Science and Culture, ACECR, Tehran, Iran
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12
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Zhou Y, Gao HL, Shen LL, Pan Z, Mao LB, Wu T, He JC, Zou DH, Zhang ZY, Yu SH. Chitosan microspheres with an extracellular matrix-mimicking nanofibrous structure as cell-carrier building blocks for bottom-up cartilage tissue engineering. NANOSCALE 2016; 8:309-317. [PMID: 26610691 DOI: 10.1039/c5nr06876b] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Scaffolds for tissue engineering (TE) which closely mimic the physicochemical properties of the natural extracellular matrix (ECM) have been proven to advantageously favor cell attachment, proliferation, migration and new tissue formation. Recently, as a valuable alternative, a bottom-up TE approach utilizing cell-loaded micrometer-scale modular components as building blocks to reconstruct a new tissue in vitro or in vivo has been proved to demonstrate a number of desirable advantages compared with the traditional bulk scaffold based top-down TE approach. Nevertheless, micro-components with an ECM-mimicking nanofibrous structure are still very scarce and highly desirable. Chitosan (CS), an accessible natural polymer, has demonstrated appealing intrinsic properties and promising application potential for TE, especially the cartilage tissue regeneration. According to this background, we report here the fabrication of chitosan microspheres with an ECM-mimicking nanofibrous structure for the first time based on a physical gelation process. By combining this physical fabrication procedure with microfluidic technology, uniform CS microspheres (CMS) with controlled nanofibrous microstructure and tunable sizes can be facilely obtained. Especially, no potentially toxic or denaturizing chemical crosslinking agent was introduced into the products. Notably, in vitro chondrocyte culture tests revealed that enhanced cell attachment and proliferation were realized, and a macroscopic 3D geometrically shaped cartilage-like composite can be easily constructed with the nanofibrous CMS (NCMS) and chondrocytes, which demonstrate significant application potential of NCMS as the bottom-up cell-carrier components for cartilage tissue engineering.
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Affiliation(s)
- Yong Zhou
- Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, School of Stomatology, Shanghai Jiao Tong University, Shanghai 200011, P. R. China.
| | - Huai-Ling Gao
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
| | - Li-Li Shen
- Department of Dental Implant Center, Stomatologic Hospital & College, Key Laboratory of Oral Diseases Research of Anhui Province, Anhui Medical University, Hefei 230032, P. R. China.
| | - Zhao Pan
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
| | - Li-Bo Mao
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
| | - Tao Wu
- Department of Dental Implant Center, Stomatologic Hospital & College, Key Laboratory of Oral Diseases Research of Anhui Province, Anhui Medical University, Hefei 230032, P. R. China.
| | - Jia-Cai He
- Department of Dental Implant Center, Stomatologic Hospital & College, Key Laboratory of Oral Diseases Research of Anhui Province, Anhui Medical University, Hefei 230032, P. R. China.
| | - Duo-Hong Zou
- Department of Dental Implant Center, Stomatologic Hospital & College, Key Laboratory of Oral Diseases Research of Anhui Province, Anhui Medical University, Hefei 230032, P. R. China.
| | - Zhi-Yuan Zhang
- Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, School of Stomatology, Shanghai Jiao Tong University, Shanghai 200011, P. R. China.
| | - Shu-Hong Yu
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
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13
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Wang Z, Qian Z, Cao Y, Zhang X, Tai R, Dong H, Zhao N, Xu J. Facile preparation of bridged silsesquioxane microspheres with interconnected multi-cavities and open holes. RSC Adv 2016. [DOI: 10.1039/c5ra22733j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Bridged silsesquioxane (BSQ) microspheres featured with interconnected multi-cavities and open holes are facilely prepared from water-in-oil-in-water emulsion.
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Affiliation(s)
- Zhen Wang
- Beijing National Laboratory for Molecular Sciences
- Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Zhenchao Qian
- Beijing National Laboratory for Molecular Sciences
- Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Yuan Cao
- Beijing National Laboratory for Molecular Sciences
- Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Xiangzhi Zhang
- Shanghai Synchrotron Radiation Facility
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai 201204
- China
| | - Renzhong Tai
- Shanghai Synchrotron Radiation Facility
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai 201204
- China
| | - Haixia Dong
- Beijing National Laboratory for Molecular Sciences
- Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Ning Zhao
- Beijing National Laboratory for Molecular Sciences
- Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Jian Xu
- Beijing National Laboratory for Molecular Sciences
- Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
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14
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Ma J, Zhang X, Liu Y, Yu H, Liu L, Shi Y, Li Y, Qin J. Patterning hypoxic multicellular spheroids in a 3D matrix - a promising method for anti-tumor drug screening. Biotechnol J 2015; 11:127-34. [PMID: 26647062 DOI: 10.1002/biot.201500183] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Revised: 11/03/2015] [Accepted: 12/07/2015] [Indexed: 11/10/2022]
Abstract
3D multicellular spheroid models are of great value in the investigation of tumor biology and tumor responses to chemotherapy and radiation. To establish a mimicking tumor microenvironment in vitro, we developed a straightforward method by patterning hypoxic multicellular spheroids in a 3D matrix. The efficacy of this approach was evaluated by characterizing spheroid formation, invasive capability and phenotypic transition in aggressive human glioma cells. We observed enhanced cell proliferation, spheroid formation and invasive capability in U87 glioma cells transfected with hypoxia-inducible factors (HIFs) compared with non-treated cells. We also demonstrated that the overexpression of HIFs in hypoxic glioma cells may promote cell migration by epithelial-mesenchymal transition within the 3D matrix. Compared with conventional 3D culturing techniques, the simple operation, rapid prototyping, low cost and high throughput format of the micro-patterning method facilitates the characterization of cell proliferation, migration, phenotypic function and drug evaluation in physiologically relevant 3D microenvironments. This in vitro 3D system can recapitulate the physiologically relevant tumor microenvironment and is a promising method for 3D anti-tumor drug screening and the identification of novel targets for tumor invasion and angiogenesis.
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Affiliation(s)
- Jingyun Ma
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China.,The First Affiliated Hospital of Dalian Medical University, Dalian, China.,State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China
| | - Xu Zhang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Yang Liu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Haibo Yu
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China
| | - Lianqing Liu
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China
| | - Yang Shi
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Yanfeng Li
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Jianhua Qin
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China.
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15
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Huang X, Yang Y, Shi J, Ngo HT, Shen C, Du W, Wang Y. High-Internal-Phase Emulsion Tailoring Polymer Amphiphilicity towards an Efficient NIR-Sensitive Bacteria Filter. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:4876-4883. [PMID: 26110234 DOI: 10.1002/smll.201501396] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Indexed: 06/04/2023]
Abstract
Emulsions having a high internal-phase volume fraction—termed as HIPEs for high internal phase emulsions—are in high demand as templates for functional macroporous materials. Designing molecular surfactants with appropriate amphiphilicity plays a critical role in the HIPE preparation. In this study, successful tailoring of the amphiphilicity of the originally hydrophobic block co-polymer of polystyrene-b-polyvinylpyridine (PS-b-P4VP) is reported. In combination with trifluoroacetic acid, less than 5 wt% of the polymer-CF3COOH system is feasible as a surfactant for HIPE preparation; this is lower than the amounts typically needed for commonly used commercial surfactants. Using the HIPEs as templates, well-defined closed- and open-cell macroporous triacrylate-based monoliths are fabricated simply through the adjustment of the ratio of the water phase to oil phase. After coating the resulting macroporous material with polypyrrole nanoparticles, the system can be exploited as an NIR-sensitive filter for bacteria; it not only excludes oversized bacteria, but it also kills the bacteria with the help of NIR-induced heat.
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Affiliation(s)
- Xiaopeng Huang
- Department of Chemistry, Renmin University of China, Beijing, 100872, China
| | - Youdi Yang
- Department of Chemistry, Renmin University of China, Beijing, 100872, China
| | - Jiezhong Shi
- Department of Chemistry, Renmin University of China, Beijing, 100872, China
| | - Huynh Thien Ngo
- National Institute for Materials Science (NIMS-MANA), Namiki 1-1, Tsukuba, Ibaraki, 305-0044, Japan
| | - Chaohua Shen
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Wenbin Du
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yapei Wang
- Department of Chemistry, Renmin University of China, Beijing, 100872, China
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16
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Yu X, Cheng G, Zhou MD, Zheng SY. On-demand one-step synthesis of monodisperse functional polymeric microspheres with droplet microfluidics. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:3982-3992. [PMID: 25782525 DOI: 10.1021/acs.langmuir.5b00617] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A simple and robust method for one-step synthesis of monodisperse functional polymeric microspheres was established by generation of reversed microemulsion droplets in aqueous phase inside microfluidic chips and controlled evaporation of the organic solvent. Using this method, water-soluble nanomaterials can be easily encapsulated into biodegradable Poly(D,L-lactic-co-glycolic acid) (PLGA) to form functional microspheres. By controlling the flow rate of microemulsion phase, PLGA polymeric microspheres with narrow size distribution and diameters in the range of ∼50-100 μm were obtained. As a demonstration of the versatility of the approach, high-quality fluorescent CdTe:Zn(2+) quantum dots (QDs) of various emission spectra, superparamagnetic Fe3O4 nanoparticles, and water-soluble carbon nanotubes (CNTs) were used to synthesize fluorescent PLGA@QDs, magnetic PLGA@Fe3O4, and PLGA@CNTs polymeric microspheres, respectively. In order to show specific applications, the PLGA@Fe3O4 were modified with polydopamine (PDA), and then the silver nanoparticles grew on the surfaces of the PLGA@Fe3O4@PDA polymeric microspheres by reducting the Ag(+) to Ag(0). The as-prepared PLGA@Fe3O4@PDA-Ag microspheres showed a highly efficient catalytic reduction of the 4-nitrophenol, a highly toxic substance. The monodisperse uniform functional PLGA polymeric microspheres can potentially be critically important for multiple biomedical applications.
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Ran X, Zhang K, Shi L, Chi Z, Qiu W, Guo L. Single-step fabrication of large-scale patterned honeycomb structures via self-assembly of a small organic molecule. RSC Adv 2015. [DOI: 10.1039/c5ra09016d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
A schematic diagram of honeycomb structure formation from AOB-t8.
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Affiliation(s)
- Xia Ran
- Department of Physics
- School of Physics and Electronics
- Henan University
- Kaifeng 475004
- People's Republic of China
| | - Kun Zhang
- Department of Physics
- School of Physics and Electronics
- Henan University
- Kaifeng 475004
- People's Republic of China
| | - Lili Shi
- Department of Physics
- School of Physics and Electronics
- Henan University
- Kaifeng 475004
- People's Republic of China
| | - Zhen Chi
- Department of Physics
- School of Physics and Electronics
- Henan University
- Kaifeng 475004
- People's Republic of China
| | - Weihong Qiu
- Department of Physics
- Oregon State University
- Corvallis
- USA
| | - Lijun Guo
- Department of Physics
- School of Physics and Electronics
- Henan University
- Kaifeng 475004
- People's Republic of China
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18
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Wang D, Huang X, Wang Y. Managing the phase separation in double emulsion by tuning amphiphilicity via a supramolecular route. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:14460-14468. [PMID: 25388825 DOI: 10.1021/la5043525] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Double emulsion has attracted intense scientific investigation on account of its use in a wide range of applications. However, the process of its solidification is usually accompanied by the problem of uncontrollable phase separation. In this work, a supramolecular route is proposed to manage the phase separation in double emulsion. Different degrees of phase separations, from complete wetting to partial wetting and complete dewetting, have been achieved in an emulsion system consisting of P4VP-oleic acid. Partial wetting offers a strategy for generating polymer particles with controllable anisotropic structures. It is demonstrated that the amphiphilicity of polymer matrix, relying on the change of polymer-acid ratio or the chain length of aliphatic acid, is of vital importance for determining the degree of phase separation. A spreading and wetting theory is established to predict and explain the formation of partial wetting.
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Affiliation(s)
- Dingguan Wang
- Department of Chemistry, Renmin University of China , Beijing, 100872, People's Republic of China
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Shang L, Cheng Y, Wang J, Ding H, Rong F, Zhao Y, Gu Z. Double emulsions from a capillary array injection microfluidic device. LAB ON A CHIP 2014; 14:3489-3493. [PMID: 25025688 DOI: 10.1039/c4lc00698d] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A facile microfluidic device was developed by inserting an annular capillary array into a collection channel for single-step emulsification of double emulsions. By inserting multiple inner-phase solutions into the capillary array, multicomponent double emulsions or microcapsules with inner droplets of different content could also be obtained from the device.
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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.
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Yu Y, Wen H, Ma J, Lykkemark S, Xu H, Qin J. Flexible fabrication of biomimetic bamboo-like hybrid microfibers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:2494-2499. [PMID: 24453009 DOI: 10.1002/adma.201304974] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2013] [Revised: 11/13/2013] [Indexed: 05/28/2023]
Abstract
Biomimetic and flexible bamboo-like hybrid fibers are produced using a novel one-step strategy. By combining a droplet microfluidic technique with a wet-spinning process, biocompatible microfibers are incorporated with polymer spheres or multicellular spheroids. As a result of the controllability of this approach, it has potential applications in materials science and tissue engineering.
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Affiliation(s)
- Yue Yu
- Division of Biotechnology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian, 116023, China
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21
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Yu X, Lu B, Xu Z. Super long-life supercapacitors based on the construction of nanohoneycomb-like strongly coupled CoMoO(4)-3D graphene hybrid electrodes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:1044-1051. [PMID: 24282115 DOI: 10.1002/adma.201304148] [Citation(s) in RCA: 212] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2013] [Revised: 09/15/2013] [Indexed: 06/02/2023]
Abstract
Nanohoneycomb-like strongly coupled CoMoO4 -3D graphene hybird electrodes are synthesized for supercapacitors which exhibit excellent specific capacitance and superior long-term cycle stability. The supercapacitor device can power a 5 mm-diameter LED efficiently for more than 3 min with a charging time of only 2 s, and shows high energy densities and good cycle stability.
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Affiliation(s)
- Xinzhi Yu
- Key Laboratory for Micro-Nano Optoelectronic, Devices of Ministry of Education and State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, P. R. China
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22
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Microfluidics and its applications in quantitative biology. QUANTITATIVE BIOLOGY 2013. [DOI: 10.1007/s40484-014-0024-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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