1
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Huo B, Xia L, Hu Y, Li G. Flexible microfluidic co-recognition coupled with magnetic enrichment and silent SERS sensing for simultaneous analysis of bacteria in food. Biosens Bioelectron 2024; 255:116227. [PMID: 38552524 DOI: 10.1016/j.bios.2024.116227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2024] [Revised: 03/10/2024] [Accepted: 03/13/2024] [Indexed: 04/15/2024]
Abstract
Food safety represents a critical global public health issue, with safety challenges posed by foodborne pathogens garnering extensive attention. Therefore, we introduce a co-recognition, enrichment and sensing (CES) all-in-one strategy for analysis of bacteria with low background and high specificity. This method employs antimicrobial peptide (AMP) functionalized magnetic nanoparticles (MNPs) to enrich bacteria and uses aptamer@Au@PBA (KxMFe(CN)6 (M = Pb and Ni)) NPs as silent SERS tags. When both S. aureus and E. coli O157:H7 are present, the silent SERS probes could specifically label the target bacteria, forming a sandwich-like structure. This binding induces silent Raman shifts (2139 cm-1 and 2197 cm-1), enabling quantification of two bacteria. Coupling with the modular flexible microfluidics and magnetic control slider device, this platform facilitates rapid switching between magnetic loading and elution. The CES SERS method demonstrated linear relationships for both S. aureus and E. coli O157:H7 at 50-1600 cfu mL-1, with detection limits of 14 and 18 cfu mL-1, respectively. The method achieved recovery rates of 85.6-112% and relative standard deviations of 1.5-8.6%. Validation using the ELISA method revealed relative errors between -7.5 and 4.3%. The CES approach has potential applications in food safety, environmental monitoring, and biomedical diagnosis.
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Affiliation(s)
- Bingyang Huo
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China
| | - Ling Xia
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China
| | - Yuling Hu
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China
| | - Gongke Li
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China.
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2
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Jiang L, Guo K, Chen Y, Xiang N. Droplet Microfluidics for Current Cancer Research: From Single-Cell Analysis to 3D Cell Culture. ACS Biomater Sci Eng 2024; 10:1335-1354. [PMID: 38420753 DOI: 10.1021/acsbiomaterials.3c01866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Cancer is the second leading cause of death worldwide. Differences in drug resistance and treatment response caused by the heterogeneity of cancer cells are the primary reasons for poor cancer therapy outcomes in patients. In addition, current in vitro anticancer drug-screening methods rely on two-dimensional monolayer-cultured cancer cells, which cannot accurately predict drug behavior in vivo. Therefore, a powerful tool to study the heterogeneity of cancer cells and produce effective in vitro tumor models is warranted to leverage cancer research. Droplet microfluidics has become a powerful platform for the single-cell analysis of cancer cells and three-dimensional cell culture of in vitro tumor spheroids. In this review, we discuss the use of droplet microfluidics in cancer research. Droplet microfluidic technologies, including single- or double-emulsion droplet generation and passive- or active-droplet manipulation, are concisely discussed. Recent advances in droplet microfluidics for single-cell analysis of cancer cells, circulating tumor cells, and scaffold-free/based 3D cell culture of tumor spheroids have been systematically introduced. Finally, the challenges that must be overcome for the further application of droplet microfluidics in cancer research are discussed.
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Affiliation(s)
- Lin Jiang
- School of Mechanical Engineering, and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing 211189, China
| | - Kefan Guo
- School of Mechanical Engineering, and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing 211189, China
| | - Yao Chen
- School of Mechanical Engineering, and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing 211189, China
| | - Nan Xiang
- School of Mechanical Engineering, and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing 211189, China
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3
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Brooks A, Zhang Y, Chen J, Zhao CX. Cancer Metastasis-on-a-Chip for Modeling Metastatic Cascade and Drug Screening. Adv Healthc Mater 2024:e2302436. [PMID: 38224141 DOI: 10.1002/adhm.202302436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 01/06/2024] [Indexed: 01/16/2024]
Abstract
Microfluidic chips are valuable tools for studying intricate cellular and cell-microenvironment interactions. Traditional in vitro cancer models lack accuracy in mimicking the complexities of in vivo tumor microenvironment. However, cancer-metastasis-on-a-chip (CMoC) models combine the advantages of 3D cultures and microfluidic technology, serving as powerful platforms for exploring cancer mechanisms and facilitating drug screening. These chips are able to compartmentalize the metastatic cascade, deepening the understanding of its underlying mechanisms. This article provides an overview of current CMoC models, focusing on distinctive models that simulate invasion, intravasation, circulation, extravasation, and colonization, and their applications in drug screening. Furthermore, challenges faced by CMoC and microfluidic technologies are discussed, while exploring promising future directions in cancer research. The ongoing development and integration of these models into cancer studies are expected to drive transformative advancements in the field.
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Affiliation(s)
- Anastasia Brooks
- School of Chemical Engineering, University of Adelaide, Adelaide, 5005, Australia
| | - Yali Zhang
- School of Chemical Engineering, University of Adelaide, Adelaide, 5005, Australia
| | - Jiezhong Chen
- School of Chemical Engineering, University of Adelaide, Adelaide, 5005, Australia
| | - Chun-Xia Zhao
- School of Chemical Engineering, University of Adelaide, Adelaide, 5005, Australia
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4
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Guo Y, Hou T, Wang J, Yan Y, Li W, Ren Y, Yan S. Phase Change Materials Meet Microfluidic Encapsulation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023:e2304580. [PMID: 37963852 DOI: 10.1002/advs.202304580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 09/03/2023] [Indexed: 11/16/2023]
Abstract
Improving the utilization of thermal energy is crucial in the world nowadays due to the high levels of energy consumption. One way to achieve this is to use phase change materials (PCMs) as thermal energy storage media, which can be used to regulate temperature or provide heating/cooling in various applications. However, PCMs have limitations like low thermal conductivity, leakage, and corrosion. To overcome these challenges, PCMs are encapsulated into microencapsulated phase change materials (MEPCMs) capsules/fibers. This encapsulation prevents PCMs from leakage and corrosion issues, and the microcapsules/fibers act as conduits for heat transfer, enabling efficient exchange between the PCM and its surroundings. Microfluidics-based MEPCMs have attracted intensive attention over the past decade due to the exquisite control over flow conditions and size of microcapsules. This review paper aims to provide an overview of the state-of-art progress in microfluidics-based encapsulation of PCMs. The principle and method of preparing MEPCM capsules/fibers using microfluidic technology are elaborated, followed by the analysis of their thermal and microstructure characteristics. Meanwhile, the applications of MEPCM in the fields of building energy conservation, textiles, military aviation, solar energy utilization, and bioengineering are summarized. Finally, the perspectives on MEPCM capsules/fibers are discussed.
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Affiliation(s)
- Yanhong Guo
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, China
- Research Group for Fluids and Thermal Engineering, University of Nottingham Ningbo China, Ningbo, Zhejiang, 315104, China
- Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham Ningbo China, Ningbo, Zhejiang, 315104, China
- Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute, University of Nottingham Ningbo China, Ningbo, Zhejiang, 315104, China
| | - Tuo Hou
- Research Group for Fluids and Thermal Engineering, University of Nottingham Ningbo China, Ningbo, Zhejiang, 315104, China
- Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham Ningbo China, Ningbo, Zhejiang, 315104, China
- Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute, University of Nottingham Ningbo China, Ningbo, Zhejiang, 315104, China
| | - Jing Wang
- Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute, University of Nottingham Ningbo China, Ningbo, Zhejiang, 315104, China
- Department of Electrical and Electronic Engineering, University of Nottingham Ningbo China, Ningbo, Zhejiang, 315104, China
| | - Yuying Yan
- Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Weihua Li
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, 2522, Australia
| | - Yong Ren
- Research Group for Fluids and Thermal Engineering, University of Nottingham Ningbo China, Ningbo, Zhejiang, 315104, China
- Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham Ningbo China, Ningbo, Zhejiang, 315104, China
- Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute, University of Nottingham Ningbo China, Ningbo, Zhejiang, 315104, China
- Key Laboratory of Carbonaceous Wastes Processing and Process Intensification Research of Zhejiang Province, University of Nottingham Ningbo China, Ningbo, Zhejiang, 315104, China
| | - Sheng Yan
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, China
- College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen, 518060, China
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5
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Long F, Guo Y, Zhang Z, Wang J, Ren Y, Cheng Y, Xu G. Recent Progress of Droplet Microfluidic Emulsification Based Synthesis of Functional Microparticles. GLOBAL CHALLENGES (HOBOKEN, NJ) 2023; 7:2300063. [PMID: 37745820 PMCID: PMC10517312 DOI: 10.1002/gch2.202300063] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 05/28/2023] [Indexed: 09/26/2023]
Abstract
The remarkable control function over the functional material formation process enabled by droplet microfluidic emulsification approaches can lead to the efficient and one-step encapsulation of active substances in microparticles, with the microparticle characteristics well regulated. In comparison to the conventional fabrication methods, droplet microfluidic technology can not only construct microparticles with various shapes, but also provide excellent templates, which enrich and expand the application fields of microparticles. For instance, intersection with disciplines in pharmacy, life sciences, and others, modifying the structure of microspheres and appending functional materials can be completed in the preparation of microparticles. The as-prepared polymer particles have great potential in a wide range of applications for chemical analysis, heavy metal adsorption, and detection. This review systematically introduces the devices and basic principles of particle preparation using droplet microfluidic technology and discusses the research of functional microparticle formation with high monodispersity, involving a plethora of types including spherical, nonspherical, and Janus type, as well as core-shell, hole-shell, and controllable multicompartment particles. Moreover, this review paper also exhibits a critical analysis of the current status and existing challenges, and outlook of the future development in the emerging fields has been discussed.
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Affiliation(s)
- Fei Long
- Department of MechanicalMaterials and Manufacturing EngineeringUniversity of Nottingham Ningbo ChinaNingbo315100P. R. China
- Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing100049P. R. China
- Zhejiang Key Laboratory of Additive Manufacturing MaterialsNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo315201P. R. China
- Research Group for Fluids and Thermal EngineeringUniversity of Nottingham Ningbo ChinaNingbo315100P. R. China
- Nottingham Ningbo China Beacons of Excellence Research and Innovation InstituteNingbo315040P. R. China
| | - Yanhong Guo
- Department of MechanicalMaterials and Manufacturing EngineeringUniversity of Nottingham Ningbo ChinaNingbo315100P. R. China
- Research Group for Fluids and Thermal EngineeringUniversity of Nottingham Ningbo ChinaNingbo315100P. R. China
| | - Zhiyu Zhang
- Department of MechanicalMaterials and Manufacturing EngineeringUniversity of Nottingham Ningbo ChinaNingbo315100P. R. China
- Research Group for Fluids and Thermal EngineeringUniversity of Nottingham Ningbo ChinaNingbo315100P. R. China
- Nottingham Ningbo China Beacons of Excellence Research and Innovation InstituteNingbo315040P. R. China
| | - Jing Wang
- Nottingham Ningbo China Beacons of Excellence Research and Innovation InstituteNingbo315040P. R. China
- Department of Electrical and Electronic EngineeringUniversity of Nottingham Ningbo ChinaNingbo315100P. R. China
| | - Yong Ren
- Department of MechanicalMaterials and Manufacturing EngineeringUniversity of Nottingham Ningbo ChinaNingbo315100P. R. China
- Research Group for Fluids and Thermal EngineeringUniversity of Nottingham Ningbo ChinaNingbo315100P. R. China
- Nottingham Ningbo China Beacons of Excellence Research and Innovation InstituteNingbo315040P. R. China
- Key Laboratory of Carbonaceous Wastes Processing and Process Intensification Research of Zhejiang ProvinceUniversity of Nottingham Ningbo ChinaNingbo315100P. R. China
| | - Yuchuan Cheng
- Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing100049P. R. China
- Zhejiang Key Laboratory of Additive Manufacturing MaterialsNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo315201P. R. China
| | - Gaojie Xu
- Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing100049P. R. China
- Zhejiang Key Laboratory of Additive Manufacturing MaterialsNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo315201P. R. China
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Minetti F, Mengatto LN, Laura Olivares M, Berli CL. Generation of curcumin-loaded albumin nanoparticles by using off-the-shelf microfluidics driven by gravity. Food Res Int 2022; 162:111984. [DOI: 10.1016/j.foodres.2022.111984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/26/2022] [Accepted: 09/26/2022] [Indexed: 11/04/2022]
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7
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Facile microfluidic device for droplets emulsion from small samples. J Flow Chem 2022. [DOI: 10.1007/s41981-022-00229-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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8
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Chen Y, Yang Y, Feng J, Carrier AJ, Tyagi D, Yu X, Wang C, Oakes KD, Zhang X. A universal monoclonal antibody-aptamer conjugation strategy for selective non-invasive bioparticle isolation from blood on a regenerative microfluidic platform. Acta Biomater 2022; 152:210-220. [PMID: 36087870 DOI: 10.1016/j.actbio.2022.09.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 08/31/2022] [Accepted: 09/01/2022] [Indexed: 11/17/2022]
Abstract
Simultaneous isolation of various circulating tumor cell (CTC) subtypes from whole blood is useful in cancer diagnosis and prognosis. Microfluidic affinity separation devices are promising for CTC separation because of their high throughput capacity and automatability. However, current affinity agents, such as antibodies (mAbs) and aptamers (Apts) alone, are still suboptimal for efficient, consistent, and versatile cell analysis. By introducing a hybrid affinity agent, i.e., an aptamer-antibody (Apt-mAb) conjugate, we developed a universal and regenerative microchip with high efficiency and non-invasiveness in the separation and profiling of various CTCs from blood. The Apt-mAb conjugate consists of a monoclonal antibody that specifically binds the target cell receptor and a surface-bound aptamer that recognizes the conserved Fc region of the mAb. The aptamer then indirectly links the surface functionalization of the microfluidic channels to the mAbs. This hybrid affinity agent and the microchip platform may be widely useful for various bio-particle separations in different biological matrices. Further, the regeneration capability of the microchip improves data consistency between multiple uses and minimizes plastic waste while promoting environmental sustainability. STATEMENT OF SIGNIFICANCE: A hybrid affinity agent, Apt-mAb, consisting of a universal aptamer (Apt) that binds the conserved Fc region of monoclonal antibodies (mAbs) was developed. The invented nano-biomaterial combines the strengths and overcomes the weakness of both Apts and mAbs, thus changing the paradigm of affinity separation of cell subtypes. When Apt-mAb was used to fabricate microfluidic chips using a "universal screwdriver" approach, the microchip could be easily tuned to bind any cell type, exhibiting great universality. Besides high sensitivity and selectivity, the superior regenerative capacity of the microchips makes them reusable, which provides improved consistency and repeatability in cell profiling and opens a new approach towards in vitro diagnostic point-of-care testing devices with environmental sustainability and cost-effectiveness.
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Affiliation(s)
- Yongli Chen
- Department of Biological Applied Engineering, Shenzhen Key Laboratory of Fermentation Purification and Analysis, Shenzhen Polytechnic, Shenzhen, 518055, China
| | - Yikun Yang
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, Guangdong 518116, China.
| | - Jinglong Feng
- Department of Biological Applied Engineering, Shenzhen Key Laboratory of Fermentation Purification and Analysis, Shenzhen Polytechnic, Shenzhen, 518055, China
| | - Andrew J Carrier
- Department of Chemistry, Cape Breton University, 1250 Grand Lake Road, Sydney, Nova Scotia, B1P 6L2, Canada
| | - Deependra Tyagi
- Department of Chemistry, Cape Breton University, 1250 Grand Lake Road, Sydney, Nova Scotia, B1P 6L2, Canada
| | - Xin Yu
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, Guangdong 518116, China
| | - Chunguang Wang
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, Guangdong 518116, China
| | - Ken D Oakes
- Department of Biology, Cape Breton University, 1250 Grand Lake Road, Sydney, Nova Scotia, B1P 6L2, Canada
| | - Xu Zhang
- Department of Chemistry, Cape Breton University, 1250 Grand Lake Road, Sydney, Nova Scotia, B1P 6L2, Canada.
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9
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Hassani-Gangaraj M, Shamloo A. Developing an Off-the-Shelf Microfluidic Droplet Generation Device for Cell Encapsulation. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mojtaba Hassani-Gangaraj
- Nano-Bioengineering Lab, Mechanical Engineering Department, Sharif University of Technology, Tehran 11365-8639, Iran
- School of Mechanical Engineering, Sharif University of Technology, Azadi Avenue, Tehran 11365-8639, Iran
| | - Amir Shamloo
- Nano-Bioengineering Lab, Mechanical Engineering Department, Sharif University of Technology, Tehran 11365-8639, Iran
- School of Mechanical Engineering, Sharif University of Technology, Azadi Avenue, Tehran 11365-8639, Iran
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10
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Pre-Degassed Microfluidic Chamber-Based Digital PCR Device for Meat Authentication Applications. MICROMACHINES 2021; 12:mi12060694. [PMID: 34198559 PMCID: PMC8231815 DOI: 10.3390/mi12060694] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/11/2021] [Accepted: 06/12/2021] [Indexed: 11/18/2022]
Abstract
Droplet digital polymerase chain reaction (ddPCR) suffers from the need for specific equipment and skilled personnel; thus, we here present a chamber-based digital PCR microfluidic device that is compatible with fluorescence image read-out systems and removes bubbles by a pre-degassed microfluidic device that consists of a pilot channel and micro chamber arrays. Digitalized PCR reagents are introduced into micro chambers, and thermocycles are taken to perform a DNA amplification process. Then, fluorescence images of a micro chamber array are read out and analyzed to obtain the total number of positive chambers. Thereby, the copy numbers of target DNA are calculated for quantitative detections. As a validation, this device is evaluated by the application of meat authentication. We performed dPCR tests using DNA templates extracted from a pure mutton DNA template with different dilutions. Then, the dPCR chip was used to identify the meat authentication using mutton–chicken mixtures with different mass ratios, showing its performance in real biotechnical applications.
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11
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Morillas JR, Carreón-González E, de Vicente J. Fabrication of strong magnetic micron-sized supraparticles with anisotropic magnetic properties for magnetorheology. SOFT MATTER 2021; 17:3733-3744. [PMID: 33704317 DOI: 10.1039/d0sm02178d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We propose three different techniques to synthesize anisotropic magnetic supraparticles for their incorporation in the formulation of magnetorheological fluids with novel potential applications. The techniques include microtransfer molding, electrodeposition and microfluidic flow-focusing devices. Although the yield of these methods is not large, with their use, it is possible to synthesize supraparticles with anisotropy in both their magnetic content and shape. The magnetorheological characteristics (yield stress) of the resulting field-induced structures were computed using finite element method simulations and demonstrated to be strongly dependent on the microstructural anisotropy of the supraparticles. In anisotropic particles, the simulated yield stress is always larger than that of the isotropic ones consisting of magnetically homogeneous spherical particles.
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Affiliation(s)
- J R Morillas
- Biocolloid and Fluid Physics Group and Excellence Research Unit 'Modeling Nature' (MNat), Department of Applied Physics, Faculty of Sciences, University of Granada, C/Fuentenueva s/n, 18071 - Granada, Spain.
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12
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Jin C, Kulkarni A, Teo N, Jana SC. Fabrication of Pill-Shaped Polyimide Aerogel Particles Using Microfluidic Flows. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c05424] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chenxi Jin
- School of Polymer Science and Polymer Engineering, The University of Akron, 250 South Forge Street, Akron, Ohio 44325-0301, United States
| | - Akshata Kulkarni
- School of Polymer Science and Polymer Engineering, The University of Akron, 250 South Forge Street, Akron, Ohio 44325-0301, United States
| | - Nicholas Teo
- School of Polymer Science and Polymer Engineering, The University of Akron, 250 South Forge Street, Akron, Ohio 44325-0301, United States
| | - Sadhan C. Jana
- School of Polymer Science and Polymer Engineering, The University of Akron, 250 South Forge Street, Akron, Ohio 44325-0301, United States
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13
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Zhang Y, Zhao Q, Yuan D, Liu H, Yun G, Lu H, Li M, Guo J, Li W, Tang SY. Modular off-chip emulsion generator enabled by a revolving needle. LAB ON A CHIP 2020; 20:4592-4599. [PMID: 33150901 DOI: 10.1039/d0lc00939c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Microfluidic chips have demonstrated unparalleled abilities in droplet generation, including precise control over droplet size and monodispersity. And yet, their rather complicated microfabrication process and operation can be a barrier for inexperienced researchers, which hinders microdroplets from unleashing their potential in broader fields of research. Here, we attempt to remove this barrier by developing an integrated and modular revolving needle emulsion generator (RNEG) to achieve high-throughput production of uniformly sized droplets in an off-chip manner. The RNEG works by driving a revolving needle to pinch the dispersed phase in a minicentrifuge tube. The system is constructed using modular components without involving any microfabrication, thereby enabling user-friendly operation. The RNEG is capable of producing microdroplets of various liquids with diameters ranging from tens to hundreds of micrometres. We further examine the principle of operation using numerical simulations and establish a simple model to predict the droplet size. Moreover, by integrating curing and centrifugation processes, the RNEG can produce hydrogel microparticles and transfer them from an oil phase into a water phase. Using this ability, we demonstrate the encapsulation and culture of single yeast cells within hydrogel microparticles. We envisage that the RNEG can become a versatile and powerful tool for high-throughput production of emulsions to facilitate diverse biological and chemical research.
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Affiliation(s)
- Yuxin Zhang
- Department of Electronic, Electrical and Systems Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
| | - Qianbin Zhao
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia.
| | - Dan Yuan
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia.
| | - Hangrui Liu
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Department of Physics and Astronomy, Macquarie University, Sydney, NSW 2109, Australia
| | - Guolin Yun
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia.
| | - Hongda Lu
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia.
| | - Ming Li
- School of Engineering, Macquarie University, Sydney, NSW 2122, Australia
| | - Jinhong Guo
- School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan Province 610051, China
| | - Weihua Li
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia.
| | - Shi-Yang Tang
- Department of Electronic, Electrical and Systems Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
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14
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Huang D, Gibeley SB, Xu C, Xiao Y, Celik O, Ginsberg HN, Leong KW. Engineering liver microtissues for disease modeling and regenerative medicine. ADVANCED FUNCTIONAL MATERIALS 2020; 30:1909553. [PMID: 33390875 PMCID: PMC7774671 DOI: 10.1002/adfm.201909553] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Indexed: 05/08/2023]
Abstract
The burden of liver diseases is increasing worldwide, accounting for two million deaths annually. In the past decade, tremendous progress has been made in the basic and translational research of liver tissue engineering. Liver microtissues are small, three-dimensional hepatocyte cultures that recapitulate liver physiology and have been used in biomedical research and regenerative medicine. This review summarizes recent advances, challenges, and future directions in liver microtissue research. Cellular engineering approaches are used to sustain primary hepatocytes or produce hepatocytes derived from pluripotent stem cells and other adult tissues. Three-dimensional microtissues are generated by scaffold-free assembly or scaffold-assisted methods such as macroencapsulation, droplet microfluidics, and bioprinting. Optimization of the hepatic microenvironment entails incorporating the appropriate cell composition for enhanced cell-cell interactions and niche-specific signals, and creating scaffolds with desired chemical, mechanical and physical properties. Perfusion-based culture systems such as bioreactors and microfluidic systems are used to achieve efficient exchange of nutrients and soluble factors. Taken together, systematic optimization of liver microtissues is a multidisciplinary effort focused on creating liver cultures and on-chip models with greater structural complexity and physiological relevance for use in liver disease research, therapeutic development, and regenerative medicine.
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Affiliation(s)
- Dantong Huang
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
| | - Sarah B. Gibeley
- Institute of Human Nutrition, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Cong Xu
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
| | - Yang Xiao
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
| | - Ozgenur Celik
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
| | - Henry N. Ginsberg
- Department of Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Kam W. Leong
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
- Department of Systems Biology, Columbia University Irving Medical Center, New York, NY 10032, USA
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15
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Huang J, Zhu J, Sun W, Ji J. Versatile and Functional Surface Patterning of in Situ Breath Figure Pore Formation via Solvent Treatment. ACS APPLIED MATERIALS & INTERFACES 2020; 12:47048-47058. [PMID: 32959646 DOI: 10.1021/acsami.0c14614] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Surface patterning of in situ pore formation was studied in this research based on the solvent treatment breath figure (stBF) method. By applying the volatile solvent onto the preshaped polymeric objects under humid conditions, hexagonally arranged pore arrays were formed on the surface efficiently. The stBF method was performed on many different polymeric samples with planar and nonplanar surfaces, and facile pore formation was achieved on these surfaces by conducting the solvent treatment in different ways of dipping, casting, and vapor treatment. The water droplets condensed from the humid air were proved to be the origin of the pore arrays just like the case of classic BF process. The influencing factors including solvent types, surfactant addition, and polymer types were evaluated for their impact on the resultant stBF morphologies. In situ three-dimensional (3D) pore formation was achieved for both macroscopic- and microscopic-sized 3D-structured objects. Chemical patterning of the introduced minor component was also achieved in the stBF pore-forming process with high efficiency and site selectivity. Moreover, the capability of pore formation and erasure with high spatial accuracy using multiple solvent treatments was revealed for the stBF method to make rewritable and hierarchical patterns. Both the selective chemical decoration and rewritable patterning serve as intriguing features of the stBF method. The establishment of the stBF method makes the classic BF process more flexible to practice and less dependent on the external conditions, showing potential for applications such as facile surface patterning with multifunctionality on devices with complex geometry.
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Affiliation(s)
- Junjie Huang
- Department of Materials Science and Engineering, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
- State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization of Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jiafeng Zhu
- Department of Materials Science and Engineering, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
- State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Wei Sun
- Department of Materials Science and Engineering, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
- State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Jian Ji
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization of Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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16
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Teo N, Jin C, Kulkarni A, Jana SC. Continuous fabrication of core-shell aerogel microparticles using microfluidic flows. J Colloid Interface Sci 2020; 561:772-781. [DOI: 10.1016/j.jcis.2019.11.053] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 11/12/2019] [Accepted: 11/14/2019] [Indexed: 11/25/2022]
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17
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Vargas Montoya N, Peterson R, Ornell KJ, Albrecht DR, Coburn JM. Silk Particle Production Based on silk/PVA Phase Separation Using a Microfabricated Co-flow Device. Molecules 2020; 25:E890. [PMID: 32079339 PMCID: PMC7070425 DOI: 10.3390/molecules25040890] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/09/2020] [Accepted: 02/11/2020] [Indexed: 01/10/2023] Open
Abstract
Polymeric particles are ideal drug delivery systems due to their cellular uptake-relevant size. Microparticles could be developed for direct injection of drug formulations into a diseased site, such as a tumor, allowing for drug retention and slow drug exposure over time through sustained release mechanisms. Bombyx mori silk fibroin has shown promise as a biocompatible biomaterial both in research and the clinic. Silk has been previously used to make particles using an emulsion-based method with poly(vinyl alcohol) (PVA). In this study, polydimethylsiloxane-based microfluidic devices were designed, fabricated, and characterized to produce silk particles through self-association of silk when exposed to PVA. Three main variables resulted in differences in particle size and size distribution, or polydispersity index (PDI). Utilizing a co-flow microfluidic device decreased the PDI of the silk particles as compared to an emulsion-based method (0.13 versus 0.65, respectively). With a flow-focusing microfluidics device, lowering the silk flow rate from 0.80 to 0.06 mL/h resulted in a decrease in the median particle size from 6.8 to 3.0 μm and the PDI from 0.12 to 0.05, respectively. Lastly, decreasing the silk concentration from 12% to 2% resulted in a decrease in the median particle size from 5.6 to 2.8 μm and the PDI from 0.81 to 0.25, respectively. Binding and release of doxorubicin, a cytotoxic drug commonly used for cancer treatment, with the fabricated silk particles was evaluated. Doxorubicin loading in the silk particles was approximately 41 µg/mg; sustained doxorubicin release occurred over 23 days. When the cytotoxicity of the released doxorubicin was tested on KELLY neuroblastoma cells, significant cell death was observed. To demonstrate the potential for internalization of the silk particles, both KELLY and THP-1-derived macrophages were exposed to fluorescently labelled silk particles for up to 24 h. With the macrophages, internalization of the silk particles was observed. Additionally, THP-1 derived macrophages exposure to silk particles increased TNF-α secretion. Overall, this microfluidics-based approach for fabricating silk particles utilizing PVA as a means to induce phase separation and silk self-assembly is a promising approach to control particle size and size distribution. These silk particles may be utilized for a variety of biomedical applications including drug delivery to multiple cell types within a tumor microenvironment.
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Affiliation(s)
| | | | | | | | - Jeannine M. Coburn
- Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, MA 01609, USA; (N.V.M.); (R.P.); (K.J.O.); (D.R.A.)
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18
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Lian Z, Chan Y, Luo Y, Yang X, Koh KS, Wang J, Chen GZ, Ren Y, He J. Microfluidic formation of highly monodispersed multiple cored droplets using needle‐based system in parallel mode. Electrophoresis 2020; 41:891-901. [DOI: 10.1002/elps.201900403] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 12/29/2019] [Accepted: 01/26/2020] [Indexed: 12/20/2022]
Affiliation(s)
- Zheng Lian
- International Doctoral Innovation CentreUniversity of Nottingham Ningbo China Ningbo P. R. China
- Department of MechanicalMaterials and Manufacturing Engineering, University of Nottingham Ningbo China Ningbo P. R. China
| | - Yue Chan
- Institute for Advanced StudyShenzhen University Shenzhen P. R. China
| | - Yang Luo
- Department of MechanicalMaterials and Manufacturing Engineering, University of Nottingham Ningbo China Ningbo P. R. China
| | - Xiaogang Yang
- Department of MechanicalMaterials and Manufacturing Engineering, University of Nottingham Ningbo China Ningbo P. R. China
| | - Kai Seng Koh
- School of Engineering and Physical SciencesHeriot‐Watt University Malaysia Putrajaya Malaysia
| | - Jing Wang
- Department of Electrical and Electronic EngineeringUniversity of Nottingham Ningbo China Ningbo P. R. China
| | - George Zheng Chen
- Department of Chemical and Environmental EngineeringUniversity of Nottingham Ningbo China Ningbo P. R. China
- Department of Chemical and Environmental EngineeringUniversity of Nottingham Nottingham UK
| | - Yong Ren
- Department of MechanicalMaterials and Manufacturing Engineering, University of Nottingham Ningbo China Ningbo P. R. China
- Research Group for Fluids and Thermal EngineeringUniversity of Nottingham Ningbo China Ningbo P. R. China
| | - Jun He
- Department of Chemical and Environmental EngineeringUniversity of Nottingham Ningbo China Ningbo P. R. China
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19
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Li Z, Guo X, Sun L, Xu J, Liu W, Li T, Wang J. A simple microsphere‐based mold to rapidly fabricate microwell arrays for multisize 3D tumor culture. Biotechnol Bioeng 2020; 117:1092-1100. [DOI: 10.1002/bit.27257] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 11/21/2019] [Accepted: 12/15/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Zixiu Li
- College of Chemistry & Pharmacy Northwest A&F University Yangling Shaanxi P. R. China
| | - Xiaofang Guo
- College of Chemistry & Pharmacy Northwest A&F University Yangling Shaanxi P. R. China
| | - Lili Sun
- College of Chemistry & Pharmacy Northwest A&F University Yangling Shaanxi P. R. China
| | - Juan Xu
- College of Chemistry & Pharmacy Northwest A&F University Yangling Shaanxi P. R. China
| | - Wenming Liu
- School of Basic Medical Science Central South University Changsha Hunan P. R. China
| | - Tianbao Li
- College of Chemistry & Pharmacy Northwest A&F University Yangling Shaanxi P. R. China
| | - Jinyi Wang
- College of Chemistry & Pharmacy Northwest A&F University Yangling Shaanxi P. R. China
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20
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Campbell ZS, Abolhasani M. Facile synthesis of anhydrous microparticles using plug-and-play microfluidic reactors. REACT CHEM ENG 2020. [DOI: 10.1039/d0re00193g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Microfluidic materials synthesis techniques are an ideal approach for controlled synthesis of anhydrous microparticles. In this article, we highlight the recent developments using plug-and-play microreactors for anhydrous microparticle synthesis.
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Affiliation(s)
- Zachary S. Campbell
- Department of Chemical and Biomolecular Engineering
- North Carolina State University
- Raleigh
- USA
| | - Milad Abolhasani
- Department of Chemical and Biomolecular Engineering
- North Carolina State University
- Raleigh
- USA
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21
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Lian Z, Wei C, Gao B, Yang X, Chan Y, Wang J, Chen GZ, Koh KS, Shi Y, Yan Y, Ren Y, He J, Liu F. Synergetic treatment of dye contaminated wastewater using microparticles functionalized with carbon nanotubes/titanium dioxide nanocomposites. RSC Adv 2020; 10:9210-9225. [PMID: 35497220 PMCID: PMC9050075 DOI: 10.1039/c9ra10899h] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Accepted: 02/23/2020] [Indexed: 12/13/2022] Open
Abstract
PDMS–MWCNTs/TiO2 microparticles made by microfluidics can achieve 85% removal efficiency of RhB pollutant in wastewater via synergetic treatment.
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22
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Xu X, Zhao L, Xue Q, Fan J, Hu Q, Tang C, Shi H, Hu B, Tian J. Dynamic Liquid Surface Enhanced Raman Scattering Platform Based on Soft Tubular Microfluidics for Label-Free Cell Detection. Anal Chem 2019; 91:7973-7979. [PMID: 31179690 DOI: 10.1021/acs.analchem.9b01111] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Cell detection is of great significance for biomedical research. Surface enhanced Raman scattering (SERS) has been widely applied to the detection of cells. However, there is still a lack of a general, low-cost, rapid, and sensitive SERS method for cell detection. Herein, a dynamic liquid SERS platform, which combines label-free SERS technique with soft tubular microfluidics for cell detection, is proposed. Compared with common static solid and static liquid measurement, the dynamic liquid SERS platform can present dynamical mixing, precise control of the mixing time, and continuous spectra collection. By characterizing the model molecules, the proposed dynamic liquid SERS platform has successfully demonstrated good stability and repeatability with 1.90% and 4.98% relative standard deviation (RSD), respectively. Three cell lines including one normal breast cell line (MCF-10A) and two breast cancer cell lines (MCF-7 and MDA-MB-231) were investigated in this platform. 270 cell spectra were selected as the training set for the classification of the models based on the K-Nearest Neighbor (K-NN) algorithm. In three independent experiments, three types of cells were identified by a test set containing 180 cell spectra with sensitivities above 83.3% and specificities above 91.6%. The accuracy was 94.1 ± 1.14% among three independent cell identifications. The dynamic liquid SERS platform has shown higher signal intensity, better repeatability, less pretreatment, and obtainment of more spectra with less time consumption. It will be a powerful detection tool in the area of cell research, clinical diagnosis, and food safety.
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Affiliation(s)
- Xiaoding Xu
- School of Life Science and Technology , Xidian University , Xi'an , Shaanxi 710126 , P. R. China
| | - Lei Zhao
- School of Life Science and Technology , Xidian University , Xi'an , Shaanxi 710126 , P. R. China
| | - Qilu Xue
- School of Life Science and Technology , Xidian University , Xi'an , Shaanxi 710126 , P. R. China
| | - Jinkun Fan
- School of Life Science and Technology , Xidian University , Xi'an , Shaanxi 710126 , P. R. China
| | - Qingqing Hu
- School of Life Science and Technology , Xidian University , Xi'an , Shaanxi 710126 , P. R. China
| | - Chu Tang
- School of Life Science and Technology , Xidian University , Xi'an , Shaanxi 710126 , P. R. China
| | - Hongyan Shi
- School of Life Science and Technology , Xidian University , Xi'an , Shaanxi 710126 , P. R. China.,Kunpad Communication Pty. Ltd. , Kunshan , Jiangsu 215300 , P. R. China
| | - Bo Hu
- School of Life Science and Technology , Xidian University , Xi'an , Shaanxi 710126 , P. R. China
| | - Jie Tian
- School of Life Science and Technology , Xidian University , Xi'an , Shaanxi 710126 , P. R. China.,Institute of Automation, Chinese Academy of Sciences , Beijing 100190 , P. R. China
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23
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Kamperman T, van Loo B, Gurian M, Henke S, Karperien M, Leijten J. On-the-fly exchangeable microfluidic nozzles for facile production of various monodisperse micromaterials. LAB ON A CHIP 2019; 19:1977-1984. [PMID: 31017163 PMCID: PMC6555637 DOI: 10.1039/c9lc00054b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Microfluidic manufacturing platforms have advanced the production of monodisperse, shape-controlled, and chemically defined micromaterials. However, conventional microfabrication platforms are typically designed and fabricated as single-purpose and single-use tools, which limits their efficiency, versatility, and overall potential. We here present an on-the-fly exchangeable nozzle concept that operates in a transparent, 3D, and reusable microfluidic device produced without cleanroom technology. The facile exchange and repositioning of the nozzles readily enables the production of monodisperse water-in-oil and oil-in-water emulsions, solid and core-shell microspheres, microfibers, and even Janus type micromaterials with controlled diameters ranging from 10 to 1000 μm using a single microfluidic device.
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Affiliation(s)
- Tom Kamperman
- Department of Developmental BioEngineering, Faculty of Science and Technology, Technical Medical Centre, University of Twente, Drienerlolaan 5, 7522 NB Enschede, The Netherlands.
| | - Bas van Loo
- Department of Developmental BioEngineering, Faculty of Science and Technology, Technical Medical Centre, University of Twente, Drienerlolaan 5, 7522 NB Enschede, The Netherlands.
| | - Melvin Gurian
- Department of Developmental BioEngineering, Faculty of Science and Technology, Technical Medical Centre, University of Twente, Drienerlolaan 5, 7522 NB Enschede, The Netherlands.
| | - Sieger Henke
- Department of Developmental BioEngineering, Faculty of Science and Technology, Technical Medical Centre, University of Twente, Drienerlolaan 5, 7522 NB Enschede, The Netherlands.
| | - Marcel Karperien
- Department of Developmental BioEngineering, Faculty of Science and Technology, Technical Medical Centre, University of Twente, Drienerlolaan 5, 7522 NB Enschede, The Netherlands.
| | - Jeroen Leijten
- Department of Developmental BioEngineering, Faculty of Science and Technology, Technical Medical Centre, University of Twente, Drienerlolaan 5, 7522 NB Enschede, The Netherlands.
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24
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Teo N, Jana SC. Surfactant-Free Process for the Fabrication of Polyimide Aerogel Microparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:2303-2312. [PMID: 30650304 DOI: 10.1021/acs.langmuir.8b03841] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This work focuses on the fabrication of polyimide aerogel microparticles of diameter 200-1000 μm from a surfactant-free, two-phase, silicone oil/dimethylformamide (DMF) oil-in-oil (O/O) system using a simple microfluidic device. The polyimide sol prepared in DMF is turned into droplets suspended in silicone oil in the microfluidic device. The droplets are guided to a heated silicone oil bath to accelerate sol-gel transition and imidization reactions, thereby yielding spherical, discrete gel microparticles that do not undergo coalescence. The discrete gel microparticles are isolated and supercritically dried to obtain aerogel microparticles. The microparticle size distribution shows dependence on dispersed and continuous phase flowrates in the microfluidic channels. The microparticle surface morphology shows dependence on the silicone oil bath temperature.
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Affiliation(s)
- Nicholas Teo
- Department of Polymer Engineering , The University of Akron , 250 South Forge Street , Akron , Ohio 44325-0301 , United States
| | - Sadhan C Jana
- Department of Polymer Engineering , The University of Akron , 250 South Forge Street , Akron , Ohio 44325-0301 , United States
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25
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Yu X, Chen B, He M, Wang H, Hu B. 3D Droplet-Based Microfluidic Device Easily Assembled from Commercially Available Modules Online Coupled with ICPMS for Determination of Silver in Single Cell. Anal Chem 2019; 91:2869-2875. [DOI: 10.1021/acs.analchem.8b04844] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Xiaoxiao Yu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Beibei Chen
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Man He
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Han Wang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Bin Hu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, China
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26
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Zhang L, Tian F, Liu C, Feng Q, Ma T, Zhao Z, Li T, Jiang X, Sun J. Hand-powered centrifugal microfluidic platform inspired by the spinning top for sample-to-answer diagnostics of nucleic acids. LAB ON A CHIP 2018; 18:610-619. [PMID: 29379939 DOI: 10.1039/c7lc01234a] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Point-of-care (POC), sample-to-answer and electricity-free nucleic acid diagnostic tools are vital for health care and disease control in resource-limited settings where centralized medical facilities or even electric power may remain unreliable. Inspired by one of the oldest recognizable toys, the spinning top, here we report a fully hand-powered centrifugal microfluidic platform for the diagnostics of pathogenic bacteria. Assay procedures such as zeolite-based purification of nucleic acids, loop-mediated isothermal amplification (LAMP) and visual detection of fluorescence signals are integrated into a single microfluidic disc. A simple pull-out operation of the top rack of the customized centrifuge initiates high-speed rotation of the disc, resulting in efficient actuation and mixing of preloaded sample/reagent fluids. This microfluidic platform enables the simultaneous detection of six kinds of pathogenic bacteria within a small disc in an electricity-free manner, showing great promise in sample-to-answer nucleic acid detection in remote settings.
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Affiliation(s)
- Lu Zhang
- Department of Chemistry, Capital Normal University, Beijing 100048, P. R. China.
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27
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Jiang Y, Du L, Li Y, Mu Q, Cui Z, Zhou J, Wu W. A novel mechanism for user-friendly and self-activated microdroplet generation capable of programmable control. Analyst 2018; 143:3798-3807. [DOI: 10.1039/c8an00035b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The real-time continuous-flow PCR inside a 3D spiral microchannel is realized by a novel self-activated microdroplet generation/transport mechanism.
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Affiliation(s)
- Yangyang Jiang
- State Key Laboratory of Applied Optics
- Changchun Institute of Optics
- Fine Mechanics and Physics
- Chinese Academy of Sciences
- Changchun
| | - Lin Du
- State Key Laboratory of ASIC and Systems
- Fudan University
- Shanghai 200433
- China
| | - Yuanming Li
- State Key Laboratory of Applied Optics
- Changchun Institute of Optics
- Fine Mechanics and Physics
- Chinese Academy of Sciences
- Changchun
| | - Quanquan Mu
- State Key Laboratory of Applied Optics
- Changchun Institute of Optics
- Fine Mechanics and Physics
- Chinese Academy of Sciences
- Changchun
| | - Zhongxu Cui
- State Key Laboratory of Applied Optics
- Changchun Institute of Optics
- Fine Mechanics and Physics
- Chinese Academy of Sciences
- Changchun
| | - Jia Zhou
- State Key Laboratory of ASIC and Systems
- Fudan University
- Shanghai 200433
- China
| | - Wenming Wu
- State Key Laboratory of Applied Optics
- Changchun Institute of Optics
- Fine Mechanics and Physics
- Chinese Academy of Sciences
- Changchun
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28
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Abstract
A three-dimensional (3D) tissue model has significant advantages over the conventional two-dimensional (2D) model. A 3D model mimics the relevant in-vivo physiological conditions, allowing a cell culture to serve as an effective tool for drug discovery, tissue engineering, and the investigation of disease pathology. The present reviews highlight the recent advances and the development of microfluidics based methods for the generation of cell spheroids. The paper emphasizes on the application of microfluidic technology for tissue engineering including the formation of multicellular spheroids (MCS). Further, the paper discusses the recent technical advances in the integration of microfluidic devices for MCS-based high-throughput drug screening. The review compares the various microfluidic techniques and finally provides a perspective for the future opportunities in this research area.
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29
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