1
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Benhal P. Micro/Nanorobotics in In Vitro Fertilization: A Paradigm Shift in Assisted Reproductive Technologies. Micromachines (Basel) 2024; 15:510. [PMID: 38675321 PMCID: PMC11052506 DOI: 10.3390/mi15040510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/28/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024]
Abstract
In vitro fertilization (IVF) has transformed the sector of assisted reproductive technology (ART) by presenting hope to couples facing infertility challenges. However, conventional IVF strategies include their own set of problems such as success rates, invasive procedures, and ethical issues. The integration of micro/nanorobotics into IVF provides a prospect to address these challenging issues. This article provides an outline of the use of micro/nanorobotics in IVF specializing in advancing sperm manipulation, egg retrieval, embryo culture, and capacity future improvements in this swiftly evolving discipline. The article additionally explores the challenges and obstacles associated with the integration of micro/nanorobotics into IVF, in addition to the ethical concerns and regulatory elements related to the usage of advanced technologies in ART. A comprehensive discussion of the risk and safety considerations related to using micro/nanorobotics in IVF techniques is likewise presented. Through this exploration, we delve into the core principles, benefits, challenges, and potential impact of micro/nanorobotics in revolutionizing IVF procedures and enhancing affected person outcomes.
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Affiliation(s)
- Prateek Benhal
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, FL 32310, USA; ; Tel.: +1-240-972-1482
- National High Magnetic Field Laboratory, 1800 E. Paul Dirac Dr., Tallahassee, FL 32310, USA
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2
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Wang S, Zhang Z, Ma X, Yue Y, Li K, Meng Y, Wu Y. Bidirectional and Stepwise Rotation of Cells and Particles Using Induced Charge Electroosmosis Vortexes. Biosensors (Basel) 2024; 14:112. [PMID: 38534219 PMCID: PMC10968096 DOI: 10.3390/bios14030112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 02/08/2024] [Accepted: 02/18/2024] [Indexed: 03/28/2024]
Abstract
The rotation of cells is of significant importance in various applications including bioimaging, biophysical analysis and microsurgery. Current methods usually require complicated fabrication processes. Herein, we proposed an induced charged electroosmosis (ICEO) based on a chip manipulation method for rotating cells. Under an AC electric field, symmetric ICEO flow microvortexes formed above the electrode surface can be used to trap and rotate cells. We have discussed the impact of ICEO and dielectrophoresis (DEP) under the experimental conditions. The capabilities of our method have been tested by investigating the precise rotation of yeast cells and K562 cells in a controllable manner. By adjusting the position of cells, the rotation direction can be changed based on the asymmetric ICEO microvortexes via applying a gate voltage to the gate electrode. Additionally, by applying a pulsed signal instead of a continuous signal, we can also precisely and flexibly rotate cells in a stepwise way. Our ICEO-based rotational manipulation method is an easy to use, biocompatible and low-cost technique, allowing rotation regardless of optical, magnetic or acoustic properties of the sample.
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Affiliation(s)
- Shaoxi Wang
- School of Microelectronics, Northwestern Polytechnical University, Xi’an 710072, China; (S.W.); (Z.Z.); (X.M.); (K.L.); (Y.M.)
| | - Zhexin Zhang
- School of Microelectronics, Northwestern Polytechnical University, Xi’an 710072, China; (S.W.); (Z.Z.); (X.M.); (K.L.); (Y.M.)
- State Key Laboratory of Analog and Mixed-Signal VLSI, Institute of Microelectronics, University of Macau, Macau, China
- Faculty of Science and Technology, University of Macau, Macau, China
| | - Xun Ma
- School of Microelectronics, Northwestern Polytechnical University, Xi’an 710072, China; (S.W.); (Z.Z.); (X.M.); (K.L.); (Y.M.)
| | - Yuanbo Yue
- School of Microelectronics, Northwestern Polytechnical University, Xi’an 710072, China; (S.W.); (Z.Z.); (X.M.); (K.L.); (Y.M.)
| | - Kemu Li
- School of Microelectronics, Northwestern Polytechnical University, Xi’an 710072, China; (S.W.); (Z.Z.); (X.M.); (K.L.); (Y.M.)
| | - Yingqi Meng
- School of Microelectronics, Northwestern Polytechnical University, Xi’an 710072, China; (S.W.); (Z.Z.); (X.M.); (K.L.); (Y.M.)
| | - Yupan Wu
- School of Microelectronics, Northwestern Polytechnical University, Xi’an 710072, China; (S.W.); (Z.Z.); (X.M.); (K.L.); (Y.M.)
- Research & Development Institute, Northwestern Polytechnical University, Shenzhen 518000, China
- Yangtze River Delta Research Institute, Northwestern Polytechnical University, Taicang 215400, China
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3
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Zhang P, Zhu B, Du P, Travas-Sejdic J. Electrochemical and Electrical Biosensors for Wearable and Implantable Electronics Based on Conducting Polymers and Carbon-Based Materials. Chem Rev 2024; 124:722-767. [PMID: 38157565 DOI: 10.1021/acs.chemrev.3c00392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Bioelectronic devices are designed to translate biological information into electrical signals and vice versa, thereby bridging the gap between the living biological world and electronic systems. Among different types of bioelectronics devices, wearable and implantable biosensors are particularly important as they offer access to the physiological and biochemical activities of tissues and organs, which is significant in diagnosing and researching various medical conditions. Organic conducting and semiconducting materials, including conducting polymers (CPs) and graphene and carbon nanotubes (CNTs), are some of the most promising candidates for wearable and implantable biosensors. Their unique electrical, electrochemical, and mechanical properties bring new possibilities to bioelectronics that could not be realized by utilizing metals- or silicon-based analogues. The use of organic- and carbon-based conductors in the development of wearable and implantable biosensors has emerged as a rapidly growing research field, with remarkable progress being made in recent years. The use of such materials addresses the issue of mismatched properties between biological tissues and electronic devices, as well as the improvement in the accuracy and fidelity of the transferred information. In this review, we highlight the most recent advances in this field and provide insights into organic and carbon-based (semi)conducting materials' properties and relate these to their applications in wearable/implantable biosensors. We also provide a perspective on the promising potential and exciting future developments of wearable/implantable biosensors.
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Affiliation(s)
- Peikai Zhang
- Centre for Innovative Materials for Health, School of Chemical Sciences, The University of Auckland, Auckland 1010, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6012, New Zealand
- Auckland Bioengineering Institute, The University of Auckland, Auckland 1010, New Zealand
| | - Bicheng Zhu
- Centre for Innovative Materials for Health, School of Chemical Sciences, The University of Auckland, Auckland 1010, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6012, New Zealand
| | - Peng Du
- Auckland Bioengineering Institute, The University of Auckland, Auckland 1010, New Zealand
| | - Jadranka Travas-Sejdic
- Centre for Innovative Materials for Health, School of Chemical Sciences, The University of Auckland, Auckland 1010, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6012, New Zealand
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4
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Wu Y, Yue Y, Zhang H, Ma X, Zhang Z, Li K, Meng Y, Wang S, Wang X, Huang W. Three-dimensional rotation of deformable cells at a bipolar electrode array using a rotating electric field. Lab Chip 2024; 24:933-945. [PMID: 38273814 DOI: 10.1039/d3lc00882g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Three-dimensional rotation of cells is imperative in a variety of applications such as biology, medicine, and chemistry. We report for the first time a versatile approach for executing controllable 3D rotation of cells or particles at a bipolar electrode (BPE) array using a rotating electric field. The versatility of this method is demonstrated by 3D rotating various cells including yeast cells and K562 cells and the cells can be rotated to a desired orientation and immobilized for further operations. Our results demonstrate how electrorotation torque, induced charge electroosmosis (ICEO) flow and dielectrophoresis can be exerted on certain cells for modulating the rotation axis, speed, and direction. ICEO-based out-of-plane rotation is capable of rotating various cells in a vertical plane regardless of their shape and size. It can realize cell orientation by rotating cells toward a specific angle and enable cell rotation by steadily rotating multiple cells at a controllable speed. The rotation spectrum for in-plane rotation is further used to extract the cellular dielectric properties. This work offers a flexible method for controllable, contactless and precise rotation of different cells or particles, offering a rapid, high-throughput, and nondestructive rotation method for cell analysis and drug discovery.
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Affiliation(s)
- Yupan Wu
- School of Microelectronics, Northwestern Polytechnical University, Xi'an, 710072, PR China
- Frontiers Science Center for Flexible Electronics (FSCFE) & Shaanxi Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, China.
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, 518000, PR China
- Yangtze River Delta Research Institute of NPU, Taicang, 215400, PR China
| | - Yuanbo Yue
- School of Microelectronics, Northwestern Polytechnical University, Xi'an, 710072, PR China
| | - Haohao Zhang
- School of Microelectronics, Northwestern Polytechnical University, Xi'an, 710072, PR China
| | - Xun Ma
- School of Microelectronics, Northwestern Polytechnical University, Xi'an, 710072, PR China
| | - Zhexin Zhang
- School of Microelectronics, Northwestern Polytechnical University, Xi'an, 710072, PR China
| | - Kemu Li
- School of Microelectronics, Northwestern Polytechnical University, Xi'an, 710072, PR China
| | - Yingqi Meng
- School of Microelectronics, Northwestern Polytechnical University, Xi'an, 710072, PR China
| | - Shaoxi Wang
- School of Microelectronics, Northwestern Polytechnical University, Xi'an, 710072, PR China
| | - Xuewen Wang
- Frontiers Science Center for Flexible Electronics (FSCFE) & Shaanxi Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, China.
| | - Wei Huang
- Frontiers Science Center for Flexible Electronics (FSCFE) & Shaanxi Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, China.
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5
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Liu W, Jing D. Droplet Rolling Transport on Hydrophobic Surfaces Under Rotating Electric Fields: A Molecular Dynamics Study. Langmuir 2023; 39:14660-14669. [PMID: 37802133 DOI: 10.1021/acs.langmuir.3c01989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/08/2023]
Abstract
Driving droplets by electric fields is usually achieved by controlling their wettability, and realizing a flexible operation requires complex electrode designs. Here, we show by molecular dynamics methods the droplet transport on hydrophobic surfaces in a rolling manner under a rotating electric field, which provides a simpler and promising way to manipulate droplets. The droplet internal velocity field shows the rolling mode. When the contact angle on the solid surface is 144.4°, the droplet can be transported steadily at a high velocity under the rotating electric field (E = 0.5 V nm-1, ω = π/20 ps-1). The droplet center-of-mass velocities and trajectories, deformation degrees, dynamic contact angles, and surface energies were analyzed regarding the electric field strength and rotational angular frequency. Droplet transport with a complex trajectory on a two-dimensional surface is achieved by setting the electric field, which reflects the programmability of the driving method. Nonuniform wettability stripes can assist in controlling droplet trajectories. The droplet transport on the three-dimensional surface is studied, and the critical conditions for the droplet passing through the surface corners and the motion law on the curved surface are obtained. Droplet coalescence has been achieved by surface designs.
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Affiliation(s)
- Wenchuan Liu
- State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Dengwei Jing
- State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
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6
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Suzuki M, Kawai S, Shee CF, Yamada R, Uchida S, Yasukawa T. Development of a simultaneous electrorotation device with microwells for monitoring the rotation rates of multiple single cells upon chemical stimulation. Lab Chip 2023; 23:692-701. [PMID: 36355051 DOI: 10.1039/d2lc00627h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Here, we described a unique simultaneous electrorotation (ROT) device for monitoring the rotation rate of Jurkat cells via chemical stimulation without fluorescent labeling and an algorithm for estimating cell rotation rates. The device comprised two pairs of interdigitated array electrodes that were stacked orthogonally through a 20 μm-thick insulating layer with rectangular microwells. Four microelectrodes (two were patterned on the bottom of the microwells and the other two on the insulating layer) were arranged on each side of the rectangular microwells. The cells, which were trapped in the microwells, underwent ROT when AC voltages were applied to the four microelectrodes to generate a rotating electric field. These microwells maintained the cells even in fluid flows. Thereafter, the ROT rates of the trapped cells were estimated and monitored during the stimulation. We demonstrated the feasibility of estimating the chemical efficiency of cells by monitoring the ROT rates of the cells. After introducing a Jurkat cell suspension into the device, the cells were subjected to ROT by applying an AC signal. Further, the rotating cells were chemically stimulated by adding an ionomycin (a calcium ionophore)-containing aliquot. The ROT rate of the ionomycin-stimulated cells decreased gradually to 90% of the initial rate after 30 s. The ROT rate was reduced by an increase in membrane capacitance. Thus, our device enabled the simultaneous chemical stimulation-induced monitoring of the alterations in the membrane capacitances of many cells without fluorescent labeling.
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Affiliation(s)
- Masato Suzuki
- Graduate School of Science, University of Hyogo, Hyogo, Japan.
- Advanced Medical Engineering Research Institute, University of Hyogo, Hyogo, Japan
| | - Shikiho Kawai
- Graduate School of Science, University of Hyogo, Hyogo, Japan.
| | - Chean Fei Shee
- Department of Advanced Information Technology, Kyushu University, Fukuoka, Japan
| | - Ryoga Yamada
- Graduate School of Science, University of Hyogo, Hyogo, Japan.
| | - Seiichi Uchida
- Department of Advanced Information Technology, Kyushu University, Fukuoka, Japan
| | - Tomoyuki Yasukawa
- Graduate School of Science, University of Hyogo, Hyogo, Japan.
- Advanced Medical Engineering Research Institute, University of Hyogo, Hyogo, Japan
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7
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Wang Y, Tong N, Li F, Zhao K, Wang D, Niu Y, Xu F, Cheng J, Wang J. Trapping of a Single Microparticle Using AC Dielectrophoresis Forces in a Microfluidic Chip. Micromachines (Basel) 2023; 14:159. [PMID: 36677221 PMCID: PMC9863554 DOI: 10.3390/mi14010159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/21/2022] [Accepted: 12/30/2022] [Indexed: 06/17/2023]
Abstract
Precise trap and manipulation of individual cells is a prerequisite for single-cell analysis, which has a wide range of applications in biology, chemistry, medicine, and materials. Herein, a microfluidic trapping system with a 3D electrode based on AC dielectrophoresis (DEP) technology is proposed, which can achieve the precise trapping and release of specific microparticles. The 3D electrode consists of four rectangular stereoscopic electrodes with an acute angle near the trapping chamber. It is made of Ag-PDMS material, and is the same height as the channel, which ensures the uniform DEP force will be received in the whole channel space, ensuring a better trapping effect can be achieved. The numerical simulation was conducted in terms of electrode height, angle, and channel width. Based on the simulation results, an optimal chip structure was obtained. Then, the polystyrene particles with different diameters were used as the samples to verify the effectiveness of the designed trapping system. The findings of this research will contribute to the application of cell trapping and manipulation, as well as single-cell analysis.
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Affiliation(s)
- Yanjuan Wang
- Software Institute, Dalian Jiaotong University, Dalian 116028, China
- Liaoning Key Laboratory of Marine Sensing and Intelligent Detection, College of Information Science and Technology, Dalian Maritime University, Dalian 116026, China
| | - Ning Tong
- Software Institute, Dalian Jiaotong University, Dalian 116028, China
| | - Fengqi Li
- Software Institute, Dalian Jiaotong University, Dalian 116028, China
| | - Kai Zhao
- Liaoning Key Laboratory of Marine Sensing and Intelligent Detection, College of Information Science and Technology, Dalian Maritime University, Dalian 116026, China
- College of Information Science and Technology, Dalian Maritime University, Dalian 116026, China
| | - Deguang Wang
- Software Institute, Dalian Jiaotong University, Dalian 116028, China
| | - Yijie Niu
- Software Institute, Dalian Jiaotong University, Dalian 116028, China
| | - Fengqiang Xu
- Software Institute, Dalian Jiaotong University, Dalian 116028, China
| | - Jiale Cheng
- Liaoning Key Laboratory of Marine Sensing and Intelligent Detection, College of Information Science and Technology, Dalian Maritime University, Dalian 116026, China
- College of Information Science and Technology, Dalian Maritime University, Dalian 116026, China
| | - Junsheng Wang
- Liaoning Key Laboratory of Marine Sensing and Intelligent Detection, College of Information Science and Technology, Dalian Maritime University, Dalian 116026, China
- College of Information Science and Technology, Dalian Maritime University, Dalian 116026, China
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8
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Kim H, Zhbanov A, Yang S. Microfluidic Systems for Blood and Blood Cell Characterization. Biosensors (Basel) 2022; 13:13. [PMID: 36671848 PMCID: PMC9856090 DOI: 10.3390/bios13010013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 12/16/2022] [Accepted: 12/19/2022] [Indexed: 06/17/2023]
Abstract
A laboratory blood test is vital for assessing a patient's health and disease status. Advances in microfluidic technology have opened the door for on-chip blood analysis. Currently, microfluidic devices can reproduce myriad routine laboratory blood tests. Considerable progress has been made in microfluidic cytometry, blood cell separation, and characterization. Along with the usual clinical parameters, microfluidics makes it possible to determine the physical properties of blood and blood cells. We review recent advances in microfluidic systems for measuring the physical properties and biophysical characteristics of blood and blood cells. Added emphasis is placed on multifunctional platforms that combine several microfluidic technologies for effective cell characterization. The combination of hydrodynamic, optical, electromagnetic, and/or acoustic methods in a microfluidic device facilitates the precise determination of various physical properties of blood and blood cells. We analyzed the physical quantities that are measured by microfluidic devices and the parameters that are determined through these measurements. We discuss unexplored problems and present our perspectives on the long-term challenges and trends associated with the application of microfluidics in clinical laboratories. We expect the characterization of the physical properties of blood and blood cells in a microfluidic environment to be considered a standard blood test in the future.
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Affiliation(s)
- Hojin Kim
- Department of Mechatronics Engineering, Dongseo University, Busan 47011, Republic of Korea
| | - Alexander Zhbanov
- School of Mechanical Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Sung Yang
- School of Mechanical Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
- Department of Biomedical Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
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9
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Ito T, Fukuchi E, Tanaka K, Nishiyama Y, Watanabe N, Fuchiwaki O. Vision Feedback Control for the Automation of the Pick-and-Place of a Capillary Force Gripper. Micromachines (Basel) 2022; 13:1270. [PMID: 36014192 PMCID: PMC9413825 DOI: 10.3390/mi13081270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 07/30/2022] [Accepted: 08/02/2022] [Indexed: 06/15/2023]
Abstract
In this paper, we describe a newly developed vision feedback method for improving the placement accuracy and success rate of a single nozzle capillary force gripper. The capillary force gripper was developed for the pick-and-place of mm-sized objects. The gripper picks up an object by contacting the top surface of the object with a droplet formed on its nozzle and places the object by contacting the bottom surface of the object with a droplet previously applied to the place surface. To improve the placement accuracy, we developed a vision feedback system combined with two cameras. First, a side camera was installed to capture images of the object and nozzle from the side. Second, from the captured images, the contour of the pre-applied droplet for placement and the contour of the object picked up by the nozzle were detected. Lastly, from the detected contours, the distance between the top surface of the droplet for object release and the bottom surface of the object was measured to determine the appropriate amount of nozzle descent. Through the experiments, we verified that the size matching effect worked reasonably well; the average placement error minimizes when the size of the cross-section of the objects is closer to that of the nozzle. We attributed this result to the self-alignment effect. We also confirmed that we could control the attitude of the object when we matched the shape of the nozzle to that of the sample. These results support the feasibility of the developed vision feedback system, which uses the capillary force gripper for heterogeneous and complex-shaped micro-objects in flexible electronics, micro-electro-mechanical systems (MEMS), soft robotics, soft matter, and biomedical fields.
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Karcz A, Van Soom A, Smits K, Verplancke R, Van Vlierberghe S, Vanfleteren J. Electrically-driven handling of gametes and embryos: taking a step towards the future of ARTs. Lab Chip 2022; 22:1852-1875. [PMID: 35510672 DOI: 10.1039/d1lc01160j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Electrical stimulation of gametes and embryos and on-chip manipulation of microdroplets of culture medium serve as promising tools for assisted reproductive technologies (ARTs). Thus far, dielectrophoresis (DEP), electrorotation (ER) and electrowetting on dielectric (EWOD) proved compatible with most laboratory procedures offered by ARTs. Positioning, entrapment and selection of reproductive cells can be achieved with DEP and ER, while EWOD provides the dynamic microenvironment of a developing embryo to better mimic the functions of the oviduct. Furthermore, these techniques are applicable for the assessment of the developmental competence of a mammalian embryo in vitro. Such research paves the way towards the amelioration and full automation of the assisted reproduction methods. This article aims to provide a summary on the recent developments regarding electrically stimulated lab-on-chip devices and their application for the manipulation of gametes and embryos in vitro.
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Affiliation(s)
- Adriana Karcz
- Centre for Microsystems Technology (CMST), Imec and Ghent University, Technologiepark Zwijnaarde 126, 9052 Zwijnaarde, Ghent, Belgium.
- Reproductive Biology Unit (RBU), Faculty of Veterinary Medicine, Department of Internal Medicine, Reproduction and Population Medicine, Ghent University, Salisburylaan 133 D4 entrance 4, 9820 Merelbeke, Belgium
| | - Ann Van Soom
- Reproductive Biology Unit (RBU), Faculty of Veterinary Medicine, Department of Internal Medicine, Reproduction and Population Medicine, Ghent University, Salisburylaan 133 D4 entrance 4, 9820 Merelbeke, Belgium
| | - Katrien Smits
- Reproductive Biology Unit (RBU), Faculty of Veterinary Medicine, Department of Internal Medicine, Reproduction and Population Medicine, Ghent University, Salisburylaan 133 D4 entrance 4, 9820 Merelbeke, Belgium
| | - Rik Verplancke
- Centre for Microsystems Technology (CMST), Imec and Ghent University, Technologiepark Zwijnaarde 126, 9052 Zwijnaarde, Ghent, Belgium.
| | - Sandra Van Vlierberghe
- Polymer Chemistry and Biomaterials Group, Centre of Macromolecular Chemistry, Ghent University, Campus Sterre, building S4, Krijgslaan 281, 9000 Ghent, Belgium
| | - Jan Vanfleteren
- Centre for Microsystems Technology (CMST), Imec and Ghent University, Technologiepark Zwijnaarde 126, 9052 Zwijnaarde, Ghent, Belgium.
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Zhang W, Song B, Bai X, Jia L, Song L, Guo J, Feng L. Versatile acoustic manipulation of micro-objects using mode-switchable oscillating bubbles: transportation, trapping, rotation, and revolution. Lab Chip 2021; 21:4760-4771. [PMID: 34632476 DOI: 10.1039/d1lc00628b] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Controllable on-chip multimodal manipulation of micro-objects in microfluidic devices is urgently required for enhancing the efficiency of potential biomedical applications. However, fixed design and driving models make it difficult to achieve switchable multifunction efficiently in a single device. In this study, a versatile bubble-based acoustofluidic device is proposed for multimodal manipulation of micro-objects in a biocompatible manner. Identical bubbles trapped over the bottom microcavities are made to flexibly switch between four different oscillatory motions by varying the applied frequency to generate corresponding modes of streaming patterns in the microchannel. Such regular modes enable stable transportation, trapping, 3D rotation, and circular revolution of the micro-objects, which were experimentally and numerically verified. The mode-switchable manipulations can be noninvasively applied to particles, cells, and organisms with different sizes, shapes, and quantities and can be controlled by key driving parameters. Moreover, 3D cell reconstruction is developed by applying the out-of-plane rotational mode and analyzed for illustration of cell surface morphology while quantifying reliably basic cell properties. Finally, a simple platform is established to integrate user-friendly function control and reconstruction analysis. The mode-switchable acoustofluidic device features a versatile, controllable, and contactless micro-object manipulation method, which provides an efficient solution for biomedical applications.
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Affiliation(s)
- Wei Zhang
- School of Mechanical Engineering & Automation, Beihang University, Beijing 100191, China.
| | - Bin Song
- School of Mechanical Engineering & Automation, Beihang University, Beijing 100191, China.
| | - Xue Bai
- School of Mechanical Engineering & Automation, Beihang University, Beijing 100191, China.
| | - Lina Jia
- School of Mechanical Engineering & Automation, Beihang University, Beijing 100191, China.
| | - Li Song
- School of Mechanical Engineering & Automation, Beihang University, Beijing 100191, China.
| | - Jingli Guo
- School of Mechanical Engineering & Automation, Beihang University, Beijing 100191, China.
| | - Lin Feng
- School of Mechanical Engineering & Automation, Beihang University, Beijing 100191, China.
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100083, China
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Abstract
Within the last decades, conventional flow cytometry (FC) has evolved as a powerful measurement method in clinical diagnostics, biology, life sciences and healthcare. Imaging flow cytometry (IFC) extends the power of traditional FC by adding high resolution optical and spectroscopic information. However, the conventional IFC only provides a 2D projection of a 3D object. To overcome this limitation, tomographic imaging flow cytometry (tIFC) was developed to access 3D information about the target particles. The goal of tIFC is to visualize surfaces and internal structures in a holistic way. This review article gives an overview of the past and current developments in tIFC.
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Affiliation(s)
- Andreas Kleiber
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, D-07745 Jena, Germany
| | - Daniel Kraus
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, D-07745 Jena, Germany
| | - Thomas Henkel
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, D-07745 Jena, Germany
| | - Wolfgang Fritzsche
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, D-07745 Jena, Germany
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13
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Abstract
In recent decades, the integration of microfluidic devices and multiple actuation technologies at the microscale has greatly contributed to the progress of related fields. In particular, microbubbles are playing an increasingly important role in microfluidics because of their unique characteristics that lead to specific responses to different energy sources and gas-liquid interactions. Many effective and functional bubble-based micromanipulation strategies have been developed and improved, enabling various non-invasive, selective, and precise operations at the microscale. This review begins with a brief introduction of the morphological characteristics and formation of microbubbles. The theoretical foundations and working mechanisms of typical micromanipulations based on acoustic, thermodynamic, and chemical microbubbles in fluids are described. We critically review the extensive applications and the frontline advances of bubbles in microfluidics, including microflow patterns, position and orientation control, biomedical applications, and development of bubble-based microrobots. We lastly present an outlook to provide directions for the design and application of microbubble-based micromanipulation tools and attract the attention of relevant researchers to the enormous potential of microbubbles in microfluidics.
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Affiliation(s)
- Yuyang Li
- Key Laboratory of Biomimetic Robots and Systems, Ministry of Education, State Key Laboratory of Intelligent Control and Decision of Complex System, Beijing Advanced Innovation Center for Intelligent Robots and Systems, School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China.
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14
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Zhang Q, Shao Y, Li B, Wu Y, Dong J, Zhang D, Wang Y, Yan Y, Wang X, Pu Q, Guo G. Visually precise, low-damage, single-cell spatial manipulation with single-pixel resolution. Chem Sci 2021; 12:4111-4118. [PMID: 34163682 PMCID: PMC8179525 DOI: 10.1039/d0sc05534d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The analysis of single living cells, including intracellular delivery and extraction, is essential for monitoring their dynamic biochemical processes and exploring intracellular heterogeneity. However, owing to the 2D view in bright-field microscopy and optical distortions caused by the cell shape and the variation in the refractive index both inside and around the cells, achieving spatially undistorted imaging for high-precision manipulation within a cell is challenging. Here, an accurate and visual system is developed for single-cell spatial manipulation by correcting the aberration for simultaneous bright-field triple-view imaging. Stereo information from the triple view enables higher spatial resolution that facilitates the precise manipulation of single cells. In the bright field, we resolved the spatial locations of subcellular structures of a single cell suspended in a medium and measured the random spatial rotation angle of the cell with a precision of ±5°. Furthermore, we demonstrated the visual manipulation of a probe to an arbitrary spatial point of a cell with an accuracy of <1 pixel. This novel system is more accurate and less destructive for subcellular content extraction and drug delivery. We achieved the low-damage spatial puncture of single cells at specific visual points with an accuracy of <65 nm.![]()
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Affiliation(s)
- Qi Zhang
- Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Biology, Beijing University of Technology Beijing 100124 China
| | - Yunlong Shao
- Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Biology, Beijing University of Technology Beijing 100124 China
| | - Boye Li
- Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Biology, Beijing University of Technology Beijing 100124 China
| | - Yuanyuan Wu
- Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Biology, Beijing University of Technology Beijing 100124 China
| | - Jingying Dong
- Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Biology, Beijing University of Technology Beijing 100124 China
| | - Dongtang Zhang
- Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Biology, Beijing University of Technology Beijing 100124 China
| | - Yanan Wang
- Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Biology, Beijing University of Technology Beijing 100124 China
| | - Yong Yan
- Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Biology, Beijing University of Technology Beijing 100124 China
| | - Xiayan Wang
- Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Biology, Beijing University of Technology Beijing 100124 China
| | - Qiaosheng Pu
- Department of Chemistry, Lanzhou University Lanzhou Gansu 730000 China
| | - Guangsheng Guo
- Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Biology, Beijing University of Technology Beijing 100124 China
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15
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Huang L, Feng Y, Liang F, Zhao P, Wang W. Dual-fiber microfluidic chip for multimodal manipulation of single cells. Biomicrofluidics 2021; 15:014106. [PMID: 33537113 PMCID: PMC7846294 DOI: 10.1063/5.0039087] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 01/05/2021] [Indexed: 05/22/2023]
Abstract
On-chip single-cell manipulation is imperative in cell biology and it is desirable for a microfluidic chip to have multimodal manipulation capability. Here, we embedded two counter-propagating optical fibers into the microfluidic chip and configured their relative position in space to produce different misalignments. By doing so, we demonstrated multimodal manipulation of single cells, including capture, stretching, translation, orbital revolution, and spin rotation. The rotational manipulation can be in-plane or out-of-plane, providing flexibility and capability to observe the cells from different angles. Based on out-of-plane rotation, we performed a 3D reconstruction of cell morphology and extracted its five geometric parameters as biophysical features. We envision that this type of microfluidic chip configured with dual optical fibers can be helpful in manipulating cells as the upstream process of single-cell analysis.
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Affiliation(s)
| | - Yongxiang Feng
- Department of Precision Instrument, State Key Laboratory of Precision Measurement Technology and Instrument, Tsinghua University, Beijing 100084, China
| | - Fei Liang
- Department of Precision Instrument, State Key Laboratory of Precision Measurement Technology and Instrument, Tsinghua University, Beijing 100084, China
| | - Peng Zhao
- Department of Precision Instrument, State Key Laboratory of Precision Measurement Technology and Instrument, Tsinghua University, Beijing 100084, China
| | - Wenhui Wang
- Department of Precision Instrument, State Key Laboratory of Precision Measurement Technology and Instrument, Tsinghua University, Beijing 100084, China
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16
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Puttaswamy SV, Bhalla N, Kelsey C, Lubarsky G, Lee C, McLaughlin J. Independent and grouped 3D cell rotation in a microfluidic device for bioimaging applications. Biosens Bioelectron 2020; 170:112661. [PMID: 33032194 DOI: 10.1016/j.bios.2020.112661] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/16/2020] [Accepted: 09/26/2020] [Indexed: 12/24/2022]
Abstract
Cell rotation reveals important information which facilitates identification and characterization of different cells. Markedly, achieving three dimensional (3D) rolling rotation of single cells within a larger group of cells is rare among existing cell rotation techniques. In this work we present a simple biochip which can be used to trap and rotate a single cell, or to rotate multiple cells relative to each other within a group of individual red blood cells (RBCs), which is crucial for imaging cells in 3D. To achieve single RBC trapping, we employ two parallel sidewall 3D electrodes to produce a dielectrophoretic force which traps cells inside the capturing chambers of the microfluidic device, where the hydrodynamic force then induces precise rotation of the cell inside the chamber. We have also demonstrated the possibility of using the developed biochip to preconcentrate and rotate RBC clusters in 3D. As our proposed cell trapping and rotation device reduces the intricacy of cell rotation, the developed technique may have important implications for high resolution 3D cell imaging in the investigation of complex cell dynamics and interactions in moving media.
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Affiliation(s)
- Srinivasu Valagerahally Puttaswamy
- Nanotechnology and Integrated Bioengineering Centre (NIBEC), School of Engineering, Ulster University, Jordanstown Shore Road, BT37 0QB, Northern Ireland, United Kingdom.
| | - Nikhil Bhalla
- Nanotechnology and Integrated Bioengineering Centre (NIBEC), School of Engineering, Ulster University, Jordanstown Shore Road, BT37 0QB, Northern Ireland, United Kingdom; Healthcare Technology Hub, Ulster University, Jordanstown Shore Road, BT37 0QB, Northern Ireland, United Kingdom.
| | - Colin Kelsey
- Nanotechnology and Integrated Bioengineering Centre (NIBEC), School of Engineering, Ulster University, Jordanstown Shore Road, BT37 0QB, Northern Ireland, United Kingdom
| | - Gennady Lubarsky
- Nanotechnology and Integrated Bioengineering Centre (NIBEC), School of Engineering, Ulster University, Jordanstown Shore Road, BT37 0QB, Northern Ireland, United Kingdom
| | - Chengkuo Lee
- Department of Electrical & Computer Engineering, National University of Singapore, 4 Engineering Drive 3, 117576, Singapore
| | - James McLaughlin
- Nanotechnology and Integrated Bioengineering Centre (NIBEC), School of Engineering, Ulster University, Jordanstown Shore Road, BT37 0QB, Northern Ireland, United Kingdom; Healthcare Technology Hub, Ulster University, Jordanstown Shore Road, BT37 0QB, Northern Ireland, United Kingdom.
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17
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Benhal P, Quashie D, Kim Y, Ali J. Insulator Based Dielectrophoresis: Micro, Nano, and Molecular Scale Biological Applications. Sensors (Basel) 2020; 20:E5095. [PMID: 32906803 PMCID: PMC7570478 DOI: 10.3390/s20185095] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 08/16/2020] [Accepted: 09/04/2020] [Indexed: 12/31/2022]
Abstract
Insulator based dielectrophoresis (iDEP) is becoming increasingly important in emerging biomolecular applications, including particle purification, fractionation, and separation. Compared to conventional electrode-based dielectrophoresis (eDEP) techniques, iDEP has been demonstrated to have a higher degree of selectivity of biological samples while also being less biologically intrusive. Over the past two decades, substantial technological advances have been made, enabling iDEP to be applied from micro, to nano and molecular scales. Soft particles, including cell organelles, viruses, proteins, and nucleic acids, have been manipulated using iDEP, enabling the exploration of subnanometer biological interactions. Recent investigations using this technique have demonstrated a wide range of applications, including biomarker screening, protein folding analysis, and molecular sensing. Here, we review current state-of-art research on iDEP systems and highlight potential future work.
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Affiliation(s)
- Prateek Benhal
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, FL 32310, USA;
- National High Magnetic Field Laboratory, Tallahassee, FL 32310, USA
| | - David Quashie
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, FL 32310, USA;
- National High Magnetic Field Laboratory, Tallahassee, FL 32310, USA
| | - Yoontae Kim
- American Dental Association Science & Research Institute, Gaithersburg, MD 20899, USA;
| | - Jamel Ali
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, FL 32310, USA;
- National High Magnetic Field Laboratory, Tallahassee, FL 32310, USA
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18
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Moulavi F, Asadi-Moghadam B, Omidi M, Yarmohammadi M, Ozegovic M, Rastegar A, Hosseini SM. Pregnancy and Calving Rates of Cloned Dromedary Camels Produced by Conventional and Handmade Cloning Techniques and In Vitro and In Vivo Matured Oocytes. Mol Biotechnol 2020; 62:433-442. [PMID: 32666261 DOI: 10.1007/s12033-020-00262-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/26/2020] [Indexed: 12/14/2022]
Abstract
Despite practical implication of cloning in camelids, its broad application has been hampered by technical and biological problems. Method of somatic cell nuclear transfer (SCNT) and oocyte competence are the principal technical and biological factors, respectively, that determine the cloning efficiency. This study, therefore, investigated differential contributions of two SCNT methods [modified handmade cloning (mHMC) vs. conventional (cNT)] and two recipient oocyte sources [abattoir-derived (Vitro) vs. FSH-stimulated (Vivo)] on the efficiency of dromedary camel cloning. The mHMC method supported similar rates of fusion, cleavage, and total blastocyst development, compared to conventional NT (cNT) (94, 89.1, and 68.5% vs. 78.9, 92, and 73.5%, respectively) when Vivo oocytes are used. However, using Vitro oocytes, mHMC supported significantly higher rates for these criteria, except for the cleavage, compared to cNT (95.5, 76.2, 25.2% vs. 75.3, 76.7, and 13.9%, respectively). A total of seven clones were born from mHMC/Vitro (four calves), mHMC/Vivo (one calf), cNT/Vitro (one calf), and mHMC/Vivo&Vivo (one calf)-derived embryos with overall efficiencies of 31.9, 26.6, 20, and 30% for initial pregnancy, 10.6, 6.6, 7.5, and 5% for development to term, and 8.5, 6.6, 2.5, 5% for development to weaving, respectively. To conclude, the quality of recipient oocyte greatly impacts cloning efficiency in vitro with no apparent carrying over effect on cloning efficiency in vivo, but the efficiency of SCNT method may compensate for the initial poor oocyte competence during in vitro and in vivo development of cloned embryos. The introduced mHMC could be a superior alternative to conventional method for simple, fast, and efficient production of cloned offspring in camelids.
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Affiliation(s)
- F Moulavi
- Department of Embryology, Camel Advanced Reproductive Technologies Centre, Government of Dubai, Dubai, United Arab Emirates
| | - B Asadi-Moghadam
- Department of Embryology, Camel Advanced Reproductive Technologies Centre, Government of Dubai, Dubai, United Arab Emirates
| | - M Omidi
- Department of Embryology, Camel Advanced Reproductive Technologies Centre, Government of Dubai, Dubai, United Arab Emirates
| | - M Yarmohammadi
- Department of Embryology, Camel Advanced Reproductive Technologies Centre, Government of Dubai, Dubai, United Arab Emirates
| | - M Ozegovic
- Department of Embryology, Camel Advanced Reproductive Technologies Centre, Government of Dubai, Dubai, United Arab Emirates
| | - A Rastegar
- Department of Embryology, Camel Advanced Reproductive Technologies Centre, Government of Dubai, Dubai, United Arab Emirates
| | - S M Hosseini
- Department of Embryology, Camel Advanced Reproductive Technologies Centre, Government of Dubai, Dubai, United Arab Emirates.
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19
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Kleiber A, Ramoji A, Mayer G, Neugebauer U, Popp J, Henkel T. 3-Step flow focusing enables multidirectional imaging of bioparticles for imaging flow cytometry. Lab Chip 2020; 20:1676-1686. [PMID: 32282005 DOI: 10.1039/d0lc00244e] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Multidirectional imaging flow cytometry (mIFC) extends conventional imaging flow cytometry (IFC) for the image-based measurement of 3D-geometrical features of particles. The innovative core is a flow rotation unit in which a vertical sample lamella is incrementally rotated by 90 degrees into a horizontal lamella. The required multidirectional views are generated by guiding all particles at a controllable shear flow position of the parabolic velocity profile of the capillary slit detection chamber. All particles pass the detection chamber in a two-dimensional sheet under controlled rotation while each particle is imaged multiple times. This generates new options for automated particle analysis. In an experimental application, we used our system for the accurate classification of 15 species of pollen based on 3D-morphological information. We demonstrate how the combination of multi directional imaging with advanced machine learning algorithms can improve the accuracy of automated bio-particle classification. As an additional benefit, we significantly decrease the number of false positives in the classification of foreign particles, i.e. those elements which do not belong to one of the trained classes by the 3D-extension of the classification algorithm.
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Affiliation(s)
- Andreas Kleiber
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, D-07745 Jena, Germany.
| | - Anuradha Ramoji
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, D-07745 Jena, Germany. and Center of Sepsis Control and Care (CSCC), Jena University Hospital, Am Klinikum 1, D-07747 Jena, Germany
| | - Günter Mayer
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, D-07745 Jena, Germany.
| | - Ute Neugebauer
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, D-07745 Jena, Germany. and Institute of Physical Chemistry and Abbe Center of Photonics, Helmholtzweg 4, D-07743 Jena, Germany and Center of Sepsis Control and Care (CSCC), Jena University Hospital, Am Klinikum 1, D-07747 Jena, Germany
| | - Jürgen Popp
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, D-07745 Jena, Germany. and Institute of Physical Chemistry and Abbe Center of Photonics, Helmholtzweg 4, D-07743 Jena, Germany and Center of Sepsis Control and Care (CSCC), Jena University Hospital, Am Klinikum 1, D-07747 Jena, Germany
| | - Thomas Henkel
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, D-07745 Jena, Germany.
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20
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Tang Q, Liang F, Huang L, Zhao P, Wang W. On-chip simultaneous rotation of large-scale cells by acoustically oscillating bubble array. Biomed Microdevices 2020; 22. [DOI: 10.1007/s10544-020-0470-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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21
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Huang L, Liang F, Feng Y, Zhao P, Wang W. On-chip integrated optical stretching and electrorotation enabling single-cell biophysical analysis. Microsyst Nanoeng 2020; 6:57. [PMID: 34567668 PMCID: PMC8433418 DOI: 10.1038/s41378-020-0162-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 01/08/2020] [Accepted: 03/31/2020] [Indexed: 05/05/2023]
Abstract
Cells have different intrinsic markers such as mechanical and electrical properties, which may be used as specific characteristics. Here, we present a microfluidic chip configured with two opposing optical fibers and four 3D electrodes for multiphysical parameter measurement. The chip leverages optical fibers to capture and stretch a single cell and uses 3D electrodes to achieve rotation of the single cell. According to the stretching deformation and rotation spectrum, the mechanical and dielectric properties can be extracted. We provided proof of concept by testing five types of cells (HeLa, A549, HepaRG, MCF7 and MCF10A) and determined five biophysical parameters, namely, shear modulus, steady-state viscosity, and relaxation time from the stretching deformation and area-specific membrane capacitance and cytoplasm conductivity from the rotation spectra. We showed the potential of the chip in cancer research by observing subtle changes in the cellular properties of transforming growth factor beta 1 (TGF-β1)-induced epithelial-mesenchymal transition (EMT) A549 cells. The new chip provides a microfluidic platform capable of multiparameter characterization of single cells, which can play an important role in the field of single-cell research.
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Affiliation(s)
- Liang Huang
- Department of Precision Instrument, State Key Laboratory of Precision Measurement Technology and Instrument, Tsinghua University, Beijing, China
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei, China
| | - Fei Liang
- Department of Precision Instrument, State Key Laboratory of Precision Measurement Technology and Instrument, Tsinghua University, Beijing, China
| | - Yongxiang Feng
- Department of Precision Instrument, State Key Laboratory of Precision Measurement Technology and Instrument, Tsinghua University, Beijing, China
| | - Peng Zhao
- Department of Precision Instrument, State Key Laboratory of Precision Measurement Technology and Instrument, Tsinghua University, Beijing, China
| | - Wenhui Wang
- Department of Precision Instrument, State Key Laboratory of Precision Measurement Technology and Instrument, Tsinghua University, Beijing, China
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22
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23
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Abstract
Both injection and biopsy of a mammalian cell require positioning and orientation of a biological cell in a three-dimensional space under a microscope. Manual cell manipulation and orientation is the most commonly used method that is based on a trial-and-error and direct cell poking approach. OBJECTIVE Solve inherent problems of existing approaches, including low efficiency, poor success rate and inconsistent output. METHODS We present a system that is able to automatically rotate a mouse oocyte to a desired orientation based on computer vision. Experimental results demonstrate that the system's capability for intracellular structure recognition and fast oocyte orientation (11.2 s/cell). The system demonstrated overall out-of-plane and in-plane success rates of 94% and 95% respectively. CONCLUSION Our system performs the oocyte rotation by using standard equipment yet significantly improves the efficiency and success rate. SIGNIFICANCE Our methods improve existing techniques and provide a starting point for fast autofocusing and oocyte orientation prior to automatic ICSI or cell biopsy.
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24
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Feng L, Song B, Chen Y, Liang S, Dai Y, Zhou Q, Chen D, Bai X, Feng Y, Jiang Y, Zhang D, Arai F. On-chip rotational manipulation of microbeads and oocytes using acoustic microstreaming generated by oscillating asymmetrical microstructures. Biomicrofluidics 2019; 13:064103. [PMID: 31700562 PMCID: PMC6824912 DOI: 10.1063/1.5121809] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Accepted: 10/11/2019] [Indexed: 05/16/2023]
Abstract
The capability to precisely rotate cells and other micrometer-sized biological samples is invaluable in biomedicine, bioengineering, and biophysics. We propose herein a novel on-chip cell rotation method using acoustic microstreaming generated by oscillating asymmetrical microstructures. When the vibration is applied to a microchip with our custom-designed microstructures, two different modes of highly localized microvortices are generated that are utilized to precisely achieve in-plane and out-of-plane rotational manipulation of microbeads and oocytes. The rotation mechanism is studied and verified using numerical simulations. Experiments of the microbeads are conducted to evaluate the claimed functions and investigate the effects of various parameters, such as the frequency and the driving voltage on the acoustically induced flows. Accordingly, it is shown that the rotational speed and direction can be effectively tuned on demand in single-cell studies. Finally, the rotation of swine oocytes is involved as further applications. By observing the maturation stages of M2 after the exclusion of the first polar body of operated oocytes, the proposed method is proved to be noninvasive. Compared with the conventional approaches, our acoustofluidic cell rotation approach can be simple-to-fabricate and easy-to-operate, thereby allowing rotations irrespective of the physical properties of the specimen under investigation.
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Affiliation(s)
| | - Bin Song
- School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China
| | | | - Shuzhang Liang
- School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China
| | - Yuguo Dai
- School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China
| | - Qiang Zhou
- School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China
| | - Dixiao Chen
- School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China
| | | | | | | | | | - Fumihito Arai
- Department of Micro-Nano Mechanical Science and Engineering, Nagoya University, Nagoya 464-0814, Japan
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Puttaswamy SV, Fishlock SJ, Steele D, Shi Q, Lee C, McLaughlin J. Versatile microfluidic platform embedded with sidewall three-dimensional electrodes for cell manipulation. Biomed Phys Eng Express 2019. [DOI: 10.1088/2057-1976/ab268e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Abstract
In this study, a modified method of handmade cloning (m-HMC), which had been originally developed in sheep, was used for somatic cell nuclear transfer (SCNT) in the dromedary camel. The unique feature of m-HMC over current SCNT methods lies in the use of a simple device (a finely drawn micropipette made of Pasteur pipette) for chemically-assisted enucleation of oocytes under a stereomicroscope with improved efficiency and ease of operation. Using this system, the throughput of cloned embryo reconstitution was increased over 2-fold compared to the control SCNT method (c-NT). Stepwise measurement of reactive oxygen species (ROS) revealed that method, steps, and duration of SCNT all influenced oxidative activity of oocytes, but their impact were not similar. Specifically, UV-assisted oocyte enucleation was identified as the major source of ROS production, which explained significantly higher total ROS of reconstituted embryos in c-NT compared to m-HMC. Fusion efficiency (95.3±3.3 vs. 75.4±7.6%) and total efficiency of blastocyst development (22.5±3.0 vs. 14.1±4.3%) were significantly higher in m-HMC compared to c-NT, respectively, and blastocysts of transferable quality were obtained in similar rates (41.9±8.2 vs. 48.0±15.2%, respectively). Significance differences were observed in total cell number (155.3±13.6 vs. 123.6±19.5) and trophectoderm (145±9.5 vs. 114.3±15.2), but not inner cell mass (10.3±4.1 vs. 9.3±5.3) counts between blastocysts developed in c-NT compared to m-HMC, respectively. However, expression of key developmental genes (POU5F1, KLF4, SOX2, MYC, and CDX2) was comparable between blastocysts of both groups. The introduced m-HMC method might be a viable approach for efficient production of dromedary camel clones for research and commercial utilization.
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Affiliation(s)
- Fariba Moulavi
- Department of Embryology, Camel Advanced Reproductive Technologies Centre, Government of Dubai, Dubai, United Arab Emirates
| | - Sayyed Morteza Hosseini
- Department of Embryology, Camel Advanced Reproductive Technologies Centre, Government of Dubai, Dubai, United Arab Emirates
- * E-mail:
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Abstract
Good glucose management through an insulin dose regime based on the metabolism of glucose helps millions of people worldwide manage their diabetes. Since Banting and Best extracted insulin, glucose management has improved due to the introduction of insulin analogues that act from 30 minutes to 28 days, improved insulin dose regimes, and portable glucose meters, with a current focus on alternative sampling sites that are less invasive. However, a piece of the puzzle is still missing-the ability to measure insulin directly in a Point-of-Care device. The ability to measure both glucose and insulin concurrently will enable better glucose control by providing an improved estimate for insulin sensitivity, minimizing variability in control, and maximizing safety from hypoglycaemia. However, direct detection of free insulin has provided a challenge due to the size of the molecule, the low concentration of insulin in blood, and the selectivity against interferants in blood. This review summarizes current insulin detection methods from immunoassays to analytical chemistry, and sensors. We also discuss the challenges and potential of each of the methods towards Point-of-Care insulin detection.
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Tada S, Eguchi M, Okano K. Insulator‐based dielectrophoresis combined with the isomotive AC electric field and applied to single cell analysis. Electrophoresis 2019; 40:1494-1497. [DOI: 10.1002/elps.201800380] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 12/03/2018] [Accepted: 12/22/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Shigeru Tada
- Department of Applied PhysicsNational Defense Academy Kanagawa Japan
| | - Masanori Eguchi
- Department of Electrical EngineeringNational Institute of TechnologyKure College Hiroshima Japan
| | - Kohei Okano
- Department of Applied PhysicsNational Defense Academy Kanagawa Japan
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29
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Chuang H, Wang W, Chen C. Worms on a Chip. Bioanalysis 2019. [DOI: 10.1007/978-981-13-6229-3_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Zhao Y, Sun H, Sha X, Gu L, Zhan Z, Li WJ. A Review of Automated Microinjection of Zebrafish Embryos. Micromachines (Basel) 2018; 10:E7. [PMID: 30586877 PMCID: PMC6357019 DOI: 10.3390/mi10010007] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Revised: 12/08/2018] [Accepted: 12/14/2018] [Indexed: 12/02/2022]
Abstract
Cell microinjection is a technique of precise delivery of substances into cells and is widely used for studying cell transfection, signaling pathways, and organelle functions. Microinjection of the embryos of zebrafish, the third most important animal model, has become a very useful technique in bioscience. However, factors such as the small cell size, high cell deformation tendency, and transparent zebrafish embryo membrane make the microinjection process difficult. Furthermore, this process has strict, specific requirements, such as chorion softening, avoiding contacting the first polar body, and high-precision detection. Therefore, highly accurate control and detection platforms are critical for achieving the automated microinjection of zebrafish embryos. This article reviews the latest technologies and methods used in the automated microinjection of zebrafish embryos and provides a detailed description of the current developments and applications of robotic microinjection systems. The review covers key areas related to automated embryo injection, including cell searching and location, cell position and posture adjustment, microscopic visual servoing control, sensors, actuators, puncturing mechanisms, and microinjection.
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Affiliation(s)
- Yuliang Zhao
- School of Control Engineering, Northeastern University, Qinhuangdao 066004, China.
| | - Hui Sun
- School of Control Engineering, Northeastern University, Qinhuangdao 066004, China.
| | - Xiaopeng Sha
- School of Control Engineering, Northeastern University, Qinhuangdao 066004, China.
| | - Lijia Gu
- School of Control Engineering, Northeastern University, Qinhuangdao 066004, China.
| | - Zhikun Zhan
- School of Electrical Engineering, Yanshan University, Qinhuangdao 066004, China.
| | - Wen J Li
- Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China.
- Shenzhen Academy of Robotics, Shenzhen 518000, China.
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Feng L, Song B, Zhang D, Jiang Y, Arai F. On-Chip Tunable Cell Rotation Using Acoustically Oscillating Asymmetrical Microstructures. Micromachines (Basel) 2018; 9:mi9110596. [PMID: 30441839 PMCID: PMC6265899 DOI: 10.3390/mi9110596] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 10/31/2018] [Accepted: 11/08/2018] [Indexed: 02/03/2023]
Abstract
The precise rotational manipulation of cells and other micrometer-sized biological samples is critical to many applications in biology, medicine, and agriculture. We describe an acoustic-based, on-chip manipulation method that can achieve tunable cell rotation. In an acoustic field formed by the vibration of a piezoelectric transducer, acoustic streaming was generated using a specially designed, oscillating asymmetrical sidewall shape. We also studied the nature of acoustic streaming generation by numerical simulations, and our simulation results matched well with the experimental results. Trapping and rotation of diatom cells and swine oocytes were coupled using oscillating asymmetrical microstructures with different vibration modes. Finally, we investigated the relationship between the driving voltage and the speed of cell rotation, showing that the rotational rate achieved could be as large as approximately 1800 rpm. Using our device, the rotation rate can be effectively tuned on demand for single-cell studies. Our acoustofluidic cell rotation approach is simple, compact, non-contact, and biocompatible, permitting rotation irrespective of the optical, magnetic, or electrical properties of the specimen under investigation.
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Affiliation(s)
- Lin Feng
- School of Mechanical Engineering & Automation, Beihang University, Beijing 100191, China.
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100083, China.
| | - Bin Song
- School of Mechanical Engineering & Automation, Beihang University, Beijing 100191, China.
| | - Deyuan Zhang
- School of Mechanical Engineering & Automation, Beihang University, Beijing 100191, China.
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100083, China.
| | - Yonggang Jiang
- School of Mechanical Engineering & Automation, Beihang University, Beijing 100191, China.
| | - Fumihito Arai
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100083, China.
- Department of Micro-Nano Mechanical Science & Engineering, Nagoya University, Nagoya 464-0814, Japan.
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Md Ali MA, Kayani ABA, Yeo LY, Chrimes AF, Ahmad MZ, Ostrikov K(, Majlis BY. Microfluidic dielectrophoretic cell manipulation towards stable cell contact assemblies. Biomed Microdevices 2018; 20. [DOI: 10.1007/s10544-018-0341-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Huang L, He W, Wang W. A cell electro-rotation micro-device using polarized cells as electrodes. Electrophoresis 2018; 40:784-791. [DOI: 10.1002/elps.201800360] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 09/28/2018] [Accepted: 10/08/2018] [Indexed: 01/18/2023]
Affiliation(s)
- Liang Huang
- State Key Laboratory of Precision Measurement Technology and Instrument; Department of Precision Instrument; Tsinghua University; Beijing P. R. China
| | - Weihua He
- State Key Laboratory of Precision Measurement Technology and Instrument; Department of Precision Instrument; Tsinghua University; Beijing P. R. China
| | - Wenhui Wang
- State Key Laboratory of Precision Measurement Technology and Instrument; Department of Precision Instrument; Tsinghua University; Beijing P. R. China
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Abstract
3D rotation is one of many fundamental manipulations to cells and imperative in a wide range of applications in single cell analysis involving biology, chemistry, physics and medicine. In this article, we report a dielectrophoresis-based, on-chip manipulation method that can load and rotate a single cell for 3D cell imaging and multiple biophysical property measurements. To achieve this, we trapped a single cell in constriction and subsequently released it to a rotation chamber formed by four sidewall electrodes and one transparent bottom electrode. In the rotation chamber, rotating electric fields were generated by applying appropriate AC signals to the electrodes for driving the single cell to rotate in 3D under control. The rotation spectrum for in-plane rotation was used to extract the cellular dielectric properties based on a spherical single-shell model, and the stacked images of out-of-plane cell rotation were used to reconstruct the 3D cell morphology to determine its geometric parameters. We have tested the capabilities of our method by rotating four representative mammalian cells including HeLa, C3H10, B lymphocyte, and HepaRG. Using our device, we quantified the area-specific membrane capacitance and cytoplasm conductivity for the four cells, and revealed the subtle difference of geometric parameters (i.e., surface area, volume, and roughness) by 3D cell imaging of cancer cells and normal leukocytes. Combining microfluidics, dielectrophoresis, and microscopic imaging techniques, our electrorotation-on-chip (EOC) technique is a versatile method for manipulating single cells under investigation and measuring their multiple biophysical properties.
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Affiliation(s)
- Liang Huang
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instrument, Tsinghua University, Beijing, China.
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Abstract
Single-cell rotation is a fundamental manipulation used in a wide range of biotechnological applications such as cell injection and enucleation. However, there are currently few methods for the 3D rotation of single cells. Here, this chapter presents different biochip platforms based on a dielectrophoresis technique to achieve 3D rotation. In-plane (yaw) and out-of-plane rotation (pitch) can be achieved by applying different AC signal configurations, respectively. This use of 3D rotation facilitates several applications. For example, in-plane rotation can be used to measure the rotation spectra, and this can be used to estimate the dielectric parameters. The out-of-plane rotation can help reconstruct 3D cell models.
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Affiliation(s)
- Liang Huang
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instruments, Tsinghua University, Beijing, China
| | - Peng Zhao
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instruments, Tsinghua University, Beijing, China
| | - Fei Liang
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instruments, Tsinghua University, Beijing, China
| | - Wenhui Wang
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instruments, Tsinghua University, Beijing, China.
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Zhao C, Liu Y, Sun M, Zhao X. Robotic Cell Rotation Based on Optimal Poking Direction. Micromachines (Basel) 2018; 9:mi9040141. [PMID: 30424075 PMCID: PMC6187386 DOI: 10.3390/mi9040141] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 03/09/2018] [Accepted: 03/20/2018] [Indexed: 11/20/2022]
Abstract
It is essential to have three-dimensional orientation of cells under a microscope for biological manipulation. Conventional manual cell manipulation is highly dependent on the operator’s experience. It has some problems of low repeatability, low efficiency, and contamination. The current popular robotic method uses an injection micropipette to rotate cells. However, the optimal poking direction of the injection micropipette has not been established. In this paper, a strategy of robotic cell rotation based on optimal poking direction is proposed to move the specific structure of the cell to the desired orientation. First, analysis of the force applied to the cell during rotation was done to find the optimal poking direction, where we had the biggest moment of force. Then, the moving trajectory of the injection micropipette was designed to exert rotation force based on optimal poking direction. Finally, the strategy was applied to oocyte rotation in nuclear transfer. Experimental results show that the average completion time was up to 23.6 s and the success rate was 93.3% when the moving speed of the injection micropipette was 100 μm/s, which demonstrates that our strategy could overcome slippage effectively and with high efficiency.
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Affiliation(s)
- Chunlin Zhao
- Institute of Robotics and Automatic Information System (IRAIS), Nankai University, Jinnan District, Tianjin 300350, China; (C.Z.); (Y.L); (X.Z.)
- Tianjin Key Laboratory of Intelligent Robotics (TJKLIR), Nankai University, Jinnan District, Tianjin 300350, China
| | - Yaowei Liu
- Institute of Robotics and Automatic Information System (IRAIS), Nankai University, Jinnan District, Tianjin 300350, China; (C.Z.); (Y.L); (X.Z.)
- Tianjin Key Laboratory of Intelligent Robotics (TJKLIR), Nankai University, Jinnan District, Tianjin 300350, China
| | - Mingzhu Sun
- Institute of Robotics and Automatic Information System (IRAIS), Nankai University, Jinnan District, Tianjin 300350, China; (C.Z.); (Y.L); (X.Z.)
- Tianjin Key Laboratory of Intelligent Robotics (TJKLIR), Nankai University, Jinnan District, Tianjin 300350, China
- Correspondence: ; Tel.: +86-22-23503960 (ext. 802)
| | - Xin Zhao
- Institute of Robotics and Automatic Information System (IRAIS), Nankai University, Jinnan District, Tianjin 300350, China; (C.Z.); (Y.L); (X.Z.)
- Tianjin Key Laboratory of Intelligent Robotics (TJKLIR), Nankai University, Jinnan District, Tianjin 300350, China
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Xu J, Kawano H, Liu W, Hanada Y, Lu P, Miyawaki A, Midorikawa K, Sugioka K. Controllable alignment of elongated microorganisms in 3D microspace using electrofluidic devices manufactured by hybrid femtosecond laser microfabrication. Microsyst Nanoeng 2017; 3:16078. [PMID: 31057849 PMCID: PMC6444996 DOI: 10.1038/micronano.2016.78] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 09/22/2016] [Accepted: 10/20/2016] [Indexed: 05/08/2023]
Abstract
This paper presents a simple technique to fabricate new electrofluidic devices for the three-dimensional (3D) manipulation of microorganisms by hybrid subtractive and additive femtosecond (fs) laser microfabrication (fs laser-assisted wet etching of glass followed by water-assisted fs laser modification combined with electroless metal plating). The technique enables the formation of patterned metal electrodes in arbitrary regions in closed glass microfluidic channels, which can spatially and temporally control the direction of electric fields in 3D microfluidic environments. The fabricated electrofluidic devices were applied to nanoaquariums to demonstrate the 3D electro-orientation of Euglena gracilis (an elongated unicellular microorganism) in microfluidics with high controllability and reliability. In particular, swimming Euglena cells can be oriented along the z-direction (perpendicular to the device surface) using electrodes with square outlines formed at the top and bottom of the channel, which is quite useful for observing the motions of cells parallel to their swimming directions. Specifically, z-directional electric field control ensured efficient observation of manipulated cells on the front side (45 cells were captured in a minute in an imaging area of ~160×120 μm), resulting in a reduction of the average time required to capture the images of five Euglena cells swimming continuously along the z-direction by a factor of ~43 compared with the case of no electric field. In addition, the combination of the electrofluidic devices and dynamic imaging enabled observation of the flagella of Euglena cells, revealing that the swimming direction of each Euglena cell under the electric field application was determined by the initial body angle.
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Affiliation(s)
- Jian Xu
- RIKEN Center for Advanced Photonics, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- ()
| | - Hiroyuki Kawano
- Laboratory for Cell Function Dynamics, RIKEN Brain Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Weiwei Liu
- Wuhan National Laboratory for Optoelectronics and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yasutaka Hanada
- RIKEN Center for Advanced Photonics, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Peixiang Lu
- Wuhan National Laboratory for Optoelectronics and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
- Laboratory of Optical Information and Technology, School of Science, Wuhan Institute of Technology, Wuhan 430073, China
| | - Atsushi Miyawaki
- Laboratory for Cell Function Dynamics, RIKEN Brain Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Katsumi Midorikawa
- RIKEN Center for Advanced Photonics, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Koji Sugioka
- RIKEN Center for Advanced Photonics, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- ()
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40
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Huang L, Bian S, Cheng Y, Shi G, Liu P, Ye X, Wang W. Microfluidics cell sample preparation for analysis: Advances in efficient cell enrichment and precise single cell capture. Biomicrofluidics 2017; 11:011501. [PMID: 28217240 PMCID: PMC5303167 DOI: 10.1063/1.4975666] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 01/24/2017] [Indexed: 05/03/2023]
Abstract
Single cell analysis has received increasing attention recently in both academia and clinics, and there is an urgent need for effective upstream cell sample preparation. Two extremely challenging tasks in cell sample preparation-high-efficiency cell enrichment and precise single cell capture-have now entered into an era full of exciting technological advances, which are mostly enabled by microfluidics. In this review, we summarize the category of technologies that provide new solutions and creative insights into the two tasks of cell manipulation, with a focus on the latest development in the recent five years by highlighting the representative works. By doing so, we aim both to outline the framework and to showcase example applications of each task. In most cases for cell enrichment, we take circulating tumor cells (CTCs) as the target cells because of their research and clinical importance in cancer. For single cell capture, we review related technologies for many kinds of target cells because the technologies are supposed to be more universal to all cells rather than CTCs. Most of the mentioned technologies can be used for both cell enrichment and precise single cell capture. Each technology has its own advantages and specific challenges, which provide opportunities for researchers in their own area. Overall, these technologies have shown great promise and now evolve into real clinical applications.
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Affiliation(s)
- Liang Huang
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instrument, Tsinghua University , Beijing, China
| | - Shengtai Bian
- Department of Biomedical Engineering, Tsinghua University , Beijing, China
| | - Yinuo Cheng
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instrument, Tsinghua University , Beijing, China
| | - Guanya Shi
- Department of Automotive Engineering, Tsinghua University , Beijing, China
| | - Peng Liu
- Department of Biomedical Engineering, Tsinghua University , Beijing, China
| | - Xiongying Ye
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instrument, Tsinghua University , Beijing, China
| | - Wenhui Wang
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instrument, Tsinghua University , Beijing, China
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Torino S, Iodice M, Rendina I, Coppola G, Schonbrun E. A Microfluidic Approach for Inducing Cell Rotation by Means of Hydrodynamic Forces. Sensors (Basel) 2016; 16:E1326. [PMID: 27548187 DOI: 10.3390/s16081326] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 08/11/2016] [Accepted: 08/12/2016] [Indexed: 11/23/2022]
Abstract
Microfluidic technology allows to realize devices in which cells can be imaged in their three-dimensional shape. However, there are still some limitations in the method, due to the fact that cells follow a straight path while they are flowing in a channel. This can result in a loss in information, since only one side of the cell will be visible. Our work has started from the consideration that if a cell rotates, it is possible to overcome this problem. Several approaches have been proposed for cell manipulation in microfluidics. In our approach, cells are controlled by only taking advantages of hydrodynamic forces. Two different devices have been designed, realized, and tested. The first device induces cell rotation in a plane that is parallel (in-plane) to the observation plane, while the second one induce rotation in a plane perpendicular (out-of-plane) to the observation plane.
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Huang L, Tu L, Zeng X, Mi L, Li X, Wang W. Study of a Microfluidic Chip Integrating Single Cell Trap and 3D Stable Rotation Manipulation. Micromachines (Basel) 2016; 7:E141. [PMID: 30404313 PMCID: PMC6190350 DOI: 10.3390/mi7080141] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 08/01/2016] [Accepted: 08/05/2016] [Indexed: 12/15/2022]
Abstract
Single cell manipulation technology has been widely applied in biological fields, such as cell injection/enucleation, cell physiological measurement, and cell imaging. Recently, a biochip platform with a novel configuration of electrodes for cell 3D rotation has been successfully developed by generating rotating electric fields. However, the rotation platform still has two major shortcomings that need to be improved. The primary problem is that there is no on-chip module to facilitate the placement of a single cell into the rotation chamber, which causes very low efficiency in experiment to manually pipette single 10-micron-scale cells into rotation position. Secondly, the cell in the chamber may suffer from unstable rotation, which includes gravity-induced sinking down to the chamber bottom or electric-force-induced on-plane movement. To solve the two problems, in this paper we propose a new microfluidic chip with manipulation capabilities of single cell trap and single cell 3D stable rotation, both on one chip. The new microfluidic chip consists of two parts. The top capture part is based on the least flow resistance principle and is used to capture a single cell and to transport it to the rotation chamber. The bottom rotation part is based on dielectrophoresis (DEP) and is used to 3D rotate the single cell in the rotation chamber with enhanced stability. The two parts are aligned and bonded together to form closed channels for microfluidic handling. Using COMSOL simulation and preliminary experiments, we have verified, in principle, the concept of on-chip single cell traps and 3D stable rotation, and identified key parameters for chip structures, microfluidic handling, and electrode configurations. The work has laid a solid foundation for on-going chip fabrication and experiment validation.
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Affiliation(s)
- Liang Huang
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instrument, Tsinghua University, Beijing, China.
| | - Long Tu
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instrument, Tsinghua University, Beijing, China.
| | - Xueyong Zeng
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instrument, Tsinghua University, Beijing, China.
| | - Lu Mi
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instrument, Tsinghua University, Beijing, China.
| | - Xuzhou Li
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instrument, Tsinghua University, Beijing, China.
| | - Wenhui Wang
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instrument, Tsinghua University, Beijing, China.
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Benhal P, Chase G, Gaynor P, Oback B, Wang W. Multiple-Cylindrical Electrode System for Rotational Electric Field Generation in Particle Rotation Applications. INT J ADV ROBOT SYST 2015. [DOI: 10.5772/60456] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Lab-on-a-chip micro-devices utilizing electric field-mediated particle movement provide advantages over current cell rotation techniques due to the flexibility in configuring micro-electrodes. Recent technological advances in micro-milling, three-dimensional (3D) printing and photolithography have facilitated fabrication of complex micro-electrode shapes. Using the finite-element method to simulate and optimize electric field induced particle movement systems can save time and cost by simplifying the analysis of electric fields within complex 3D structures. Here we investigated different 3D electrode structures to obtain and analyse rotational electric field vectors. Finite-element analysis was conducted by an electric current stationary solver based on charge relaxation theory. High-resolution data were obtained for three-, four-, six- and eight-cylindrical electrode arrangements to characterize the rotational fields. The results show that increasing the number of electrodes within a fixed circular boundary provides larger regions of constant amplitude rotational electric field. This is a very important finding in practice, as larger rotational regions with constant electric field amplitude make placement of cells into these regions, where cell rotation occurs, a simple task – enhancing flexibility in cell manipulation. Rotation of biological particles over the extended region would be useful for biotechnology applications which require guiding cells to a desired location, such as automation of nuclear transfer cloning.
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Affiliation(s)
- Prateek Benhal
- Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
| | - Geoffrey Chase
- Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
| | - Paul Gaynor
- Department of Electrical and Computer Engineering, University of Canterbury, Christchurch, New Zealand
| | - Björn Oback
- AgResearch Ruakura Research Centre, Hamilton, New Zealand
| | - Wenhui Wang
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instruments, Tsinghua University, Beijing, China
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Qiu Z, Tu L, Huang L, Zhu T, Nock V, Yu E, Liu X, Wang W. An integrated platform enabling optogenetic illumination of Caenorhabditis elegans neurons and muscular force measurement in microstructured environments. Biomicrofluidics 2015; 9:014123. [PMID: 25759756 PMCID: PMC4336256 DOI: 10.1063/1.4908595] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Accepted: 02/06/2015] [Indexed: 06/01/2023]
Abstract
Optogenetics has been recently applied to manipulate the neural circuits of Caenorhabditis elegans (C. elegans) to investigate its mechanosensation and locomotive behavior, which is a fundamental topic in model biology. In most neuron-related research, free C. elegans moves on an open area such as agar surface. However, this simple environment is different from the soil, in which C. elegans naturally dwells. To bridge up the gap, this paper presents integration of optogenetic illumination of C. elegans neural circuits and muscular force measurement in a structured microfluidic chip mimicking the C. elegans soil habitat. The microfluidic chip is essentially a ∼1 × 1 cm(2) elastomeric polydimethylsiloxane micro-pillar array, configured in either form of lattice (LC) or honeycomb (HC) to mimic the environment in which the worm dwells. The integrated system has four key modules for illumination pattern generation, pattern projection, automatic tracking of the worm, and force measurement. Specifically, two optical pathways co-exist in an inverted microscope, including built-in bright-field illumination for worm tracking and pattern generation, and added-in optogenetic illumination for pattern projection onto the worm body segment. The behavior of a freely moving worm in the chip under optogenetic manipulation can be recorded for off-line force measurements. Using wild-type N2 C. elegans, we demonstrated optical illumination of C. elegans neurons by projecting light onto its head/tail segment at 14 Hz refresh frequency. We also measured the force and observed three representative locomotion patterns of forward movement, reversal, and omega turn for LC and HC configurations. Being capable of stimulating or inhibiting worm neurons and simultaneously measuring the thrust force, this enabling platform would offer new insights into the correlation between neurons and locomotive behaviors of the nematode under a complex environment.
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Affiliation(s)
- Zhichang Qiu
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instruments, Tsinghua University , Beijing, China
| | - Long Tu
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instruments, Tsinghua University , Beijing, China
| | - Liang Huang
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instruments, Tsinghua University , Beijing, China
| | - Taoyuanmin Zhu
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instruments, Tsinghua University , Beijing, China
| | - Volker Nock
- Department of Electrical and Computer Engineering, University of Canterbury , Christchurch, New Zealand
| | - Enchao Yu
- School of Life Sciences, Tsinghua University , Beijing, China
| | - Xiao Liu
- School of Life Sciences, Tsinghua University , Beijing, China
| | - Wenhui Wang
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instruments, Tsinghua University , Beijing, China
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Xu J, Wu D, Ip JY, Midorikawa K, Sugioka K. Vertical sidewall electrodes monolithically integrated into 3D glass microfluidic chips using water-assisted femtosecond-laser fabrication for in situ control of electrotaxis. RSC Adv 2015. [DOI: 10.1039/c5ra00256g] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Novel sidewall metal patterning with high flexibility enables facile integration of vertical electrodes in microchannels for in situ control of electrotaxis.
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Affiliation(s)
- Jian Xu
- RIKEN Center for Advanced Photonics
- Wako
- Japan
| | - Dong Wu
- RIKEN Center for Advanced Photonics
- Wako
- Japan
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Jin D, Deng B, Li JX, Cai W, Tu L, Chen J, Wu Q, Wang WH. A microfluidic device enabling high-efficiency single cell trapping. Biomicrofluidics 2015; 9:014101. [PMID: 25610513 PMCID: PMC4288539 DOI: 10.1063/1.4905428] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Accepted: 12/22/2014] [Indexed: 05/03/2023]
Abstract
Single cell trapping increasingly serves as a key manipulation technique in single cell analysis for many cutting-edge cell studies. Due to their inherent advantages, microfluidic devices have been widely used to enable single cell immobilization. To further improve the single cell trapping efficiency, this paper reports on a passive hydrodynamic microfluidic device based on the "least flow resistance path" principle with geometry optimized in line with corresponding cell types. Different from serpentine structure, the core trapping structure of the micro-device consists of a series of concatenated T and inverse T junction pairs which function as bypassing channels and trapping constrictions. This new device enhances the single cell trapping efficiency from three aspects: (1) there is no need to deploy very long or complicated channels to adjust flow resistance, thus saving space for each trapping unit; (2) the trapping works in a "deterministic" manner, thus saving a great deal of cell samples; and (3) the compact configuration allows shorter flowing path of cells in multiple channels, thus increasing the speed and throughput of cell trapping. The mathematical model of the design was proposed and optimization of associated key geometric parameters was conducted based on computational fluid dynamics (CFD) simulation. As a proof demonstration, two types of PDMS microfluidic devices were fabricated to trap HeLa and HEK-293T cells with relatively significant differences in cell sizes. Experimental results showed 100% cell trapping and 90% single cell trapping over 4 × 100 trap sites for these two cell types, respectively. The space saving is estimated to be 2-fold and the cell trapping speed enhancement to be 3-fold compared to previously reported devices. This device can be used for trapping various types of cells and expanded to trap cells in the order of tens of thousands on 1-cm(2) scale area, as a promising tool to pattern large-scale single cells on specific substrates and facilitate on-chip cellular assay at the single cell level.
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Affiliation(s)
- D Jin
- Department of Precision Instruments, Tsinghua University , Beijing, China
| | - B Deng
- Institute of Electronics , Chinese Academy of Sciences, Beijing, China
| | - J X Li
- School of Life Sciences, Tsinghua University , Beijing, China
| | - W Cai
- North Navigation Control Technology Co., Ltd. , Beijing, China
| | - L Tu
- Department of Precision Instruments, Tsinghua University , Beijing, China
| | - J Chen
- Institute of Electronics , Chinese Academy of Sciences, Beijing, China
| | - Q Wu
- School of Life Sciences, Tsinghua University , Beijing, China
| | - W H Wang
- Department of Precision Instruments, Tsinghua University , Beijing, China
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