151
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Effect of acoustic standing waves on cellular viability and metabolic activity. Sci Rep 2020; 10:8493. [PMID: 32444830 PMCID: PMC7244593 DOI: 10.1038/s41598-020-65241-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 04/28/2020] [Indexed: 11/08/2022] Open
Abstract
Acoustic standing wave devices offer excellent potential applications in biological sciences for drug delivery, cell manipulation and tissue engineering. However, concerns have been raised about possible destructive effects on cells due to the applied acoustic field, in addition to other produced secondary factors. Here, we report a systematic study employing a 1D resonant acoustic trapping device to evaluate the cell viability and cell metabolism for a healthy cell line (Human Dermal Fibroblasts, HDF) and a cervical cancer cell line (HeLa), as a function of time and voltages applied (4-10 Vpp) under temperature-controlled conditions. We demonstrate that high cell viability can be achieved reliably when the device is operated at its minimum trapping voltage and tuned carefully to maximise the acoustic standing wave field at the cavity resonance. We found that cell viability and reductive metabolism for both cell lines are kept close to control levels at room temperature and at 34 °C after 15 minutes of acoustic exposure, while shorter acoustic exposures and small changes on temperature and voltages, had detrimental effects on cells. Our study highlights the importance of developing robust acoustic protocols where the operating mode of the acoustic device is well defined, characterized and its temperature carefully controlled, for the application of acoustic standing waves when using live cells and for potential clinical applications.
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152
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Zhou J, Habibi R, Akbaridoust F, Neild A, Nosrati R. Paper-Based Acoustofluidics for Separating Particles and Cells. Anal Chem 2020; 92:8569-8578. [DOI: 10.1021/acs.analchem.0c01496] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Jason Zhou
- Department of Mechanical & Aerospace Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Ruhollah Habibi
- Department of Mechanical & Aerospace Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Farzan Akbaridoust
- Department of Mechanical & Aerospace Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Adrian Neild
- Department of Mechanical & Aerospace Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Reza Nosrati
- Department of Mechanical & Aerospace Engineering, Monash University, Clayton, Victoria 3800, Australia
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153
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Zhang J, Hartman JH, Chen C, Yang S, Li Q, Tian Z, Huang PH, Wang L, Meyer JN, Huang TJ. Fluorescence-based sorting of Caenorhabditis elegans via acoustofluidics. LAB ON A CHIP 2020; 20:1729-1739. [PMID: 32292982 PMCID: PMC7239761 DOI: 10.1039/d0lc00051e] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Effectively isolating and categorizing large quantities of Caenorhabditis elegans (C. elegans) based on different phenotypes is important for most worm research, especially genetics. Here we present an integrated acoustofluidic chip capable of identifying worms of interest based on expression of a fluorescent protein in a continuous flow and then separate them accordingly in a high-throughput manner. Utilizing planar fiber optics as the detection unit, our acoustofluidic device requires no temporary immobilization of worms for interrogation/detection, thereby improving the throughput. Implementing surface acoustic waves (SAW) as the sorting unit, our device provides a contact-free method to move worms of interest to the desired outlet, thus ensuring the biocompatibility for our chip. Our device can sort worms of different developmental stages (L3 and L4 stage worms) at high throughput and accuracy. For example, L3 worms can be processed at a throughput of around 70 worms per min with a sample purity over 99%, which remains over 90% when the throughput is increased to around 115 worms per min. In our acoustofluidic chip, the time period to complete the detection and sorting of one worm is only 50 ms, which outperforms nearly all existing microfluidics-based worm sorting devices and may be further reduced to achieve higher throughput.
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Affiliation(s)
- Jinxin Zhang
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA.
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154
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Xu T, Luo Y, Liu C, Zhang X, Wang S. Integrated Ultrasonic Aggregation-Induced Enrichment with Raman Enhancement for Ultrasensitive and Rapid Biosensing. Anal Chem 2020; 92:7816-7821. [PMID: 32366086 DOI: 10.1021/acs.analchem.0c01011] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Enrichment and enhancement are two important aspects of ultratrace biomolecule recognition in complex biological samples. Here we integrate acoustic aggregation of modified Au nanorods with Raman enhancement for all-in-one ultratrace rapid biomolecule detection in one microliter solution. Arising from the interaction between individual nanoparticles and the acoustic field, the aggregation of Au nanorods results in rapid migration of specifically modified Au nanorods toward pressure node in a few seconds and accompanies the enrichment of specific biomolecular. As a proof concept, rapid and sensitive surface-enhanced Raman scattering (SERS) detection of nucleic acids (10-13 M) in microliter-scale (10-6 L) sample is achieved. Such an approach integrates ultrasonic aggregation-induced enrichment (uAIE) with Raman enhancement, holding considerable promise for efficient, sensitive, and rapid on-chip detection of ultratrace biomarkers in a clinical sample solution.
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Affiliation(s)
- Tailin Xu
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology-Beijing, Beijing 100083, People's Republic of China
| | - Yong Luo
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology-Beijing, Beijing 100083, People's Republic of China
| | - Conghui Liu
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology-Beijing, Beijing 100083, People's Republic of China.,School of Biomedical Engineering, Shenzhen University, Shenzhen, Guangdong 518060, People's Republic of China
| | - Xueji Zhang
- School of Biomedical Engineering, Shenzhen University, Shenzhen, Guangdong 518060, People's Republic of China
| | - Shutao Wang
- Key Laboratory of Bio-inspired Materials and Interface Science, CAS Center for Excellence in Nanoscience, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
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155
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Hacohen A, Jessel HR, Richter-Levin A, Shefi O. Patterning of Particles and Live Cells at Single Cell Resolution. MICROMACHINES 2020; 11:E505. [PMID: 32429308 PMCID: PMC7281171 DOI: 10.3390/mi11050505] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 05/12/2020] [Accepted: 05/13/2020] [Indexed: 01/06/2023]
Abstract
The ability to manipulate and selectively position cells into patterns or distinct microenvironments is an important component of many single cell experimental methods and biological engineering applications. Although a variety of particles and cell patterning methods have been demonstrated, most of them deal with the patterning of cell populations, and are either not suitable or difficult to implement for the patterning of single cells. Here, we describe a bottom-up strategy for the micropatterning of cells and cell-sized particles. We have configured a micromanipulator system, in which a pneumatic microinjector is coupled to a holding pipette capable of physically isolating single particles and cells from different types, and positioning them with high accuracy in a predefined position, with a resolution smaller than 10 µm. Complementary DNA sequences were used to stabilize and hold the patterns together. The system is accurate, flexible, and easy-to-use, and can be automated for larger-scale tasks. Importantly, it maintains the viability of live cells. We provide quantitative measurements of the process and offer a file format for such assemblies.
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Affiliation(s)
- Adar Hacohen
- The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan 5290002, Israel;
| | - Hadass R. Jessel
- The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan 5290002, Israel;
| | - Alon Richter-Levin
- The Faculty of Engineering, Bar Ilan University, Ramat Gan 5290002, Israel; (A.R.-L.); (O.S.)
- Bar Ilan Institute of Nanotechnologies and Advanced Materials, Bar Ilan University, Ramat Gan 5290002, Israel
| | - Orit Shefi
- The Faculty of Engineering, Bar Ilan University, Ramat Gan 5290002, Israel; (A.R.-L.); (O.S.)
- Bar Ilan Institute of Nanotechnologies and Advanced Materials, Bar Ilan University, Ramat Gan 5290002, Israel
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156
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Li LQ, Jia K, Wu EY, Zhu YJ, Yang KJ. Design of acoustofluidic device for localized trapping. BIOMICROFLUIDICS 2020; 14:034107. [PMID: 32477446 PMCID: PMC7244329 DOI: 10.1063/5.0006649] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 05/11/2020] [Indexed: 05/13/2023]
Abstract
State of the art acoustofluidics typically treat micro-particles in a multi-wavelength range due to the scale limitations of the established ultrasound field. Here, we report a spatial selective acoustofluidic device that allows trapping micro-particles and cells in a wavelength scale. A pair of interdigital transducers with a concentric-arc shape is used to compress the beam width, while pulsed actuation is adopted to localize the acoustic radiation force in the wave propagating direction. Unlike the traditional usage of geometrical focus, the proposed device is designed by properly superposing the convergent section of two focused surface acoustic waves. We successfully demonstrate a single-column alignment of 15-μm polystyrene particles and double-column alignment of 8-μm T cells in a wavelength scale. Through proof-of-concept experiments, the proposed acoustofluidic device shows potential applications in on-chip biological and chemical analyses, where localized handing is required.
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Affiliation(s)
- Li-qiang Li
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, No. 38 Zheda Road, Hangzhou 310027, People’s Republic of China
| | - Kun Jia
- State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace, Xi'an Jiaotong University, No. 28 West Xianning Road, 710049 Xi'an, People’s Republic of China
- Author to whom correspondence should be addressed:
| | - Er-yong Wu
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, No. 38 Zheda Road, Hangzhou 310027, People’s Republic of China
| | - Yong-jian Zhu
- Department of Neurosurgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Ke-ji Yang
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, No. 38 Zheda Road, Hangzhou 310027, People’s Republic of China
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157
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Zhao S, Wu M, Yang S, Wu Y, Gu Y, Chen C, Ye J, Xie Z, Tian Z, Bachman H, Huang PH, Xia J, Zhang P, Zhang H, Huang TJ. A disposable acoustofluidic chip for nano/microparticle separation using unidirectional acoustic transducers. LAB ON A CHIP 2020; 20:1298-1308. [PMID: 32195522 PMCID: PMC7199844 DOI: 10.1039/d0lc00106f] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Separation of nano/microparticles based on surface acoustic waves (SAWs) has shown great promise for biological, chemical, and medical applications ranging from sample purification to cancer diagnosis. However, the permanent bonding of a microchannel onto relatively expensive piezoelectric substrates and excitation transducers renders the SAW separation devices non-disposable. This limitation not only requires cumbersome cleaning and increased labor and material costs, but also leads to cross-contamination, preventing their implementation in many biological, chemical, and medical applications. Here, we demonstrate a high-performance, disposable acoustofluidic platform for nano/microparticle separation. Leveraging unidirectional interdigital transducers (IDTs), a hybrid channel design with hard/soft materials, and tilted-angle standing SAWs (taSSAWs), our disposable acoustofluidic devices achieve acoustic radiation forces comparable to those generated by existing permanently bonded, non-disposable devices. Our disposable devices can separate not only microparticles but also nanoparticles. Moreover, they can differentiate bacteria from human red blood cells (RBCs) with a purity of up to 96%. Altogether, we developed a unidirectional IDT-based, disposable acoustofluidic platform for micro/nanoparticle separation that can achieve high separation efficiency, versatility, and biocompatibility.
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Affiliation(s)
- Shuaiguo Zhao
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA.
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158
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Zhu Q, Xu T, Song Y, Luo Y, Xu L, Zhang X. Integrating modification and detection in acoustic microchip for in-situ analysis. Biosens Bioelectron 2020; 158:112185. [PMID: 32275208 DOI: 10.1016/j.bios.2020.112185] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 03/24/2020] [Accepted: 03/31/2020] [Indexed: 12/27/2022]
Abstract
Ultrasound as a biocompatible and powerful approach has been advanced in biotechnology. Here we present an acoustic microchip integrating modification and detection for in-situ analysis. Such microchip employs two pairs of piezoelectric transducers (PZTs) for acoustic field generation and a polydimethylsiloxane (PDMS) microcavity on a polyethylene terephthalate (PET) substrate for producing microparticle array. The applying of acoustic field results in rapidly forming microparticle array by adjusting the inputting frequency and voltage. In-situ modification and detection are accelerated due to the dynamic ultrasonic streaming around the ultrasound induced microparticle array. Such array also benefits from reducing the detection errors by coupling of multiple points. With this strategy, biomarkers (e.g. miRNA) can be enriched, and achieve in-situ modification and detection via simple two steps with excellent specificity. After the detection, samples are regained from the output channel by releasing the acoustic field, which is benefit for further analysis. Such integrated modification and detection acoustic microchip shows great potential in visual in-situ analysis and enriching ultratrace biomarkers for clinical diagnosis.
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Affiliation(s)
- Qinglin Zhu
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing, 100083, PR China
| | - Tailin Xu
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing, 100083, PR China.
| | - Yongchao Song
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing, 100083, PR China
| | - Yong Luo
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing, 100083, PR China
| | - Liping Xu
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing, 100083, PR China.
| | - Xueji Zhang
- School of Biomedical Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, PR China
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159
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Tayebi M, O'Rorke R, Wong HC, Low HY, Han J, Collins DJ, Ai Y. Massively Multiplexed Submicron Particle Patterning in Acoustically Driven Oscillating Nanocavities. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2000462. [PMID: 32196142 DOI: 10.1002/smll.202000462] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 02/24/2020] [Indexed: 06/10/2023]
Abstract
Nanoacoustic fields are a promising method for particle actuation at the nanoscale, though THz frequencies are typically required to create nanoscale wavelengths. In this work, the generation of robust nanoscale force gradients is demonstrated using MHz driving frequencies via acoustic-structure interactions. A structured elastic layer at the interface between a microfluidic channel and a traveling surface acoustic wave (SAW) device results in submicron acoustic traps, each of which can trap individual submicron particles. The acoustically driven deformation of nanocavities gives rise to time-averaged acoustic fields which direct suspended particles toward, and trap them within, the nanocavities. The use of SAWs permits massively multiplexed particle manipulation with deterministic patterning at the single-particle level. In this work, 300 nm diameter particles are acoustically trapped in 500 nm diameter cavities using traveling SAWs with wavelengths in the range of 20-80 µm with one particle per cavity. On-demand generation of nanoscale acoustic force gradients has wide applications in nanoparticle manipulation, including bioparticle enrichment and enhanced catalytic reactions for industrial applications.
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Affiliation(s)
- Mahnoush Tayebi
- Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore, 487372, Singapore
| | - Richard O'Rorke
- Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore, 487372, Singapore
| | - Him Cheng Wong
- Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore, 487372, Singapore
| | - Hong Yee Low
- Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore, 487372, Singapore
| | - Jongyoon Han
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - David J Collins
- Department of Biomedical Engineering, The University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Ye Ai
- Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore, 487372, Singapore
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160
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Bach JS, Bruus H. Theory of acoustic trapping of microparticles in capillary tubes. Phys Rev E 2020; 101:023107. [PMID: 32168631 DOI: 10.1103/physreve.101.023107] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 02/05/2020] [Indexed: 12/16/2022]
Abstract
We present a semianalytical theory for the acoustic fields and particle-trapping forces in a viscous fluid inside a capillary tube with arbitrary cross section and ultrasound actuation at the walls. We find that the acoustic fields vary axially on a length scale proportional to the square root of the quality factor of the two-dimensional (2D) cross-section resonance mode. This axial variation is determined analytically based on the numerical solution to the eigenvalue problem in the 2D cross section. The analysis is developed in two steps: First, we generalize a recently published expression for the 2D standing-wave resonance modes in a rectangular cross section to arbitrary shapes, including the viscous boundary layer. Second, based on these 2D modes, we derive analytical expressions in three dimensions for the acoustic pressure, the acoustic radiation and trapping force, as well as the acoustic energy flux density. We validate the theory by comparison to three-dimensional numerical simulations.
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Affiliation(s)
- Jacob S Bach
- Department of Physics, Technical University of Denmark, and DTU Physics Building 309, DK-2800 Kongens Lyngby, Denmark
| | - Henrik Bruus
- Department of Physics, Technical University of Denmark, and DTU Physics Building 309, DK-2800 Kongens Lyngby, Denmark
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161
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Kang P, Tian Z, Yang S, Yu W, Zhu H, Bachman H, Zhao S, Zhang P, Wang Z, Zhong R, Huang TJ. Acoustic tweezers based on circular, slanted-finger interdigital transducers for dynamic manipulation of micro-objects. LAB ON A CHIP 2020; 20:987-994. [PMID: 32010910 PMCID: PMC7182351 DOI: 10.1039/c9lc01124b] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Acoustic tweezing technologies are gaining significant attention from the scientific communities due to their versatility and biocompatibility. This study presents acoustic tweezers based on circular, slanted-finger interdigital transducers (CSFITs), which can steer the propagation direction of surface acoustic waves (SAWs) by tuning the excitation frequency. The CSFITs based acoustic tweezers enable dynamic and reconfigurable manipulation of micro-objects using multi-tone excitation signals. Compared to traditional interdigital transducers that generate and control SAWs along one axis, the CSFITs allow for simultaneously generating and independently controlling SAWs propagating along multiple axes by changing the frequency composition and the phase information in a multi-tone excitation signal. Moreover, the CSFITs based acoustic tweezers can be used for patterning cells/particles in various distributions and translating them along complex paths. We believe that our design is valuable for cellular-scale biological applications, in which on-chip, contactless, biocompatible handling of bioparticles is needed.
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Affiliation(s)
- Putong Kang
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA.
| | - Zhenhua Tian
- Department of Aerospace Engineering, Mississippi State University, Starkville, MS 39762, USA
| | - Shujie Yang
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA.
| | - Wenzhuo Yu
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA.
| | - Haodong Zhu
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA.
| | - Hunter Bachman
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA.
| | - Shuaiguo Zhao
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA.
| | - Peiran Zhang
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA.
| | - Zeyu Wang
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA.
| | - Ruoyu Zhong
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA.
| | - Tony Jun Huang
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA.
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162
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Scheideler OJ, Yang C, Kozminsky M, Mosher KI, Falcón-Banchs R, Ciminelli EC, Bremer AW, Chern SA, Schaffer DV, Sohn LL. Recapitulating complex biological signaling environments using a multiplexed, DNA-patterning approach. SCIENCE ADVANCES 2020; 6:eaay5696. [PMID: 32206713 PMCID: PMC7080440 DOI: 10.1126/sciadv.aay5696] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Accepted: 12/17/2019] [Indexed: 05/22/2023]
Abstract
Elucidating how the spatial organization of extrinsic signals modulates cell behavior and drives biological processes remains largely unexplored because of challenges in controlling spatial patterning of multiple microenvironmental cues in vitro. Here, we describe a high-throughput method that directs simultaneous assembly of multiple cell types and solid-phase ligands across length scales within minutes. Our method involves lithographically defining hierarchical patterns of unique DNA oligonucleotides to which complementary strands, attached to cells and ligands-of-interest, hybridize. Highlighting our method's power, we investigated how the spatial presentation of self-renewal ligand fibroblast growth factor-2 (FGF-2) and differentiation signal ephrin-B2 instruct single adult neural stem cell (NSC) fate. We found that NSCs have a strong spatial bias toward FGF-2 and identified an unexpected subpopulation exhibiting high neuronal differentiation despite spatially occupying patterned FGF-2 regions. Overall, our broadly applicable, DNA-directed approach enables mechanistic insight into how tissues encode regulatory information through the spatial presentation of heterogeneous signals.
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Affiliation(s)
- Olivia J. Scheideler
- UC Berkeley–UC San Francisco Graduate Program in Bioengineering, University of California, Berkeley, 306 Stanley Hall, Berkeley, CA 94720, USA
| | - Chun Yang
- Department of Bioengineering, University of California, Berkeley, 306 Stanley Hall, Berkeley, CA 94720, USA
| | - Molly Kozminsky
- California Institute for Quantitative Biosciences, University of California, Berkeley, 174 Stanley Hall, Berkeley, CA 94720, USA
| | - Kira I. Mosher
- California Institute for Quantitative Biosciences, University of California, Berkeley, 174 Stanley Hall, Berkeley, CA 94720, USA
| | - Roberto Falcón-Banchs
- UC Berkeley–UC San Francisco Graduate Program in Bioengineering, University of California, Berkeley, 306 Stanley Hall, Berkeley, CA 94720, USA
| | - Emma C. Ciminelli
- Department of Bioengineering, University of California, Berkeley, 306 Stanley Hall, Berkeley, CA 94720, USA
| | - Andrew W. Bremer
- UC Berkeley–UC San Francisco Graduate Program in Bioengineering, University of California, Berkeley, 306 Stanley Hall, Berkeley, CA 94720, USA
| | - Sabrina A. Chern
- Department of Physics, Harvard University, 17 Oxford Street, Cambridge, MA 02138, USA
| | - David V. Schaffer
- UC Berkeley–UC San Francisco Graduate Program in Bioengineering, University of California, Berkeley, 306 Stanley Hall, Berkeley, CA 94720, USA
- Department of Chemical & Biomolecular Engineering, University of California, Berkeley, 201 Gilman Hall, Berkeley, CA 94720, USA
- Helen Wills Neuroscience Institute, University of California, Berkeley, 132 Barker Hall #3190, Berkeley, CA 94720, USA
- Corresponding author. (D.V.S.); (L.L.S.)
| | - Lydia L. Sohn
- UC Berkeley–UC San Francisco Graduate Program in Bioengineering, University of California, Berkeley, 306 Stanley Hall, Berkeley, CA 94720, USA
- Department of Mechanical Engineering, University of California, Berkeley, 5118 Etcheverry Hall, Berkeley, CA 94720, USA
- Corresponding author. (D.V.S.); (L.L.S.)
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163
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Advances in Micromanipulation Actuated by Vibration-Induced Acoustic Waves and Streaming Flow. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10041260] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The use of vibration and acoustic characteristics for micromanipulation has been prevalent in recent years. Due to high biocompatibility, non-contact operation, and relatively low cost, the micromanipulation actuated by the vibration-induced acoustic wave and streaming flow has been widely applied in the sorting, translating, rotating, and trapping of targets at the submicron and micron scales, especially particles and single cells. In this review, to facilitate subsequent research, we summarize the fundamental theories of manipulation driven by vibration-induced acoustic waves and streaming flow. These methods are divided into two types: actuated by the acoustic wave, and actuated by the steaming flow induced by vibrating geometric structures. Recently proposed representative vibroacoustic-driven micromanipulation methods are introduced and compared, and their advantages and disadvantages are summarized. Finally, prospects are presented based on our review of the recent advances and developing trends.
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164
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Wu X, Chen S, Lu Q. High throughput profiling drug response and apoptosis of single polar cells. J Mater Chem B 2020; 8:8614-8622. [DOI: 10.1039/d0tb01684e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The drug response of single polar cells was evaluated via single cell trapping on anisotropic microwells for tumor heterogeneity.
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Affiliation(s)
- Xixi Wu
- School of Chemical Science and Engineering
- Tongji University
- Shanghai
- China
| | - Shuangshuang Chen
- School of Chemical Science and Engineering
- Tongji University
- Shanghai
- China
| | - Qinghua Lu
- School of Chemical Science and Engineering
- Tongji University
- Shanghai
- China
- School of Chemistry and Chemical Engineering
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165
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Rima XY, Walters N, Nguyen LTH, Reátegui E. Surface engineering within a microchannel for hydrodynamic and self-assembled cell patterning. BIOMICROFLUIDICS 2020; 14:014104. [PMID: 31933714 PMCID: PMC6941948 DOI: 10.1063/1.5126608] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 12/18/2019] [Indexed: 05/27/2023]
Abstract
The applications of cell patterning are widespread due to the high-throughput testing and different resolutions offered by these platforms. Cell patterning has aided in deconvoluting in vivo experiments to better characterize cellular mechanisms and increase therapeutic output. Here, we present a technique for engineering an artificial surface via surface chemistry to form large-scale arrays of cells within a microchannel by employing microstamping. By changing the approach in surface chemistry, H1568 cells were patterned hydrodynamically using immunoaffinity, and neutrophils were patterned through self-assembly via chemotaxis. The high patterning efficiencies (93% for hydrodynamic patterning and 68% for self-assembled patterning) and the lack of secondary adhesion demonstrate the reproducibility of the platform. The interaction between H1568 and neutrophils was visualized and quantified to determine the capability of the platform to encourage cell-cell interaction. With the introduction of H1568 cells into the self-assembled patterning platform, a significant hindrance in the neutrophils' ability to swarm was observed, indicating the important roles of inflammatory mediators within the nonsmall cell lung cancer tumor microenvironment.
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Affiliation(s)
- Xilal Y. Rima
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio 43210, USA
| | - Nicole Walters
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio 43210, USA
| | - Luong T. H. Nguyen
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio 43210, USA
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166
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O'Rorke R, Winkler A, Collins D, Ai Y. Slowness curve surface acoustic wave transducers for optimized acoustic streaming. RSC Adv 2020; 10:11582-11589. [PMID: 35496631 PMCID: PMC9050610 DOI: 10.1039/c9ra10452f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 03/12/2020] [Indexed: 12/22/2022] Open
Abstract
Adjusting focused IDT curvature according to the substrate slowness curve permits better focusing for enhanced acoustofluidic microparticle capture.
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Affiliation(s)
- Richard O'Rorke
- Pillar of Engineering Product Development
- Singapore University of Technology and Design
- Singapore
| | - Andreas Winkler
- Leibniz Institute for Solid State and Materials Research (IFW)
- Dresden
- Germany
| | - David Collins
- Department of Biomedical Engineering
- University of Melbourne
- Parkville
- Australia
| | - Ye Ai
- Pillar of Engineering Product Development
- Singapore University of Technology and Design
- Singapore
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167
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Hun T, Liu Y, Guo Y, Sun Y, Fan Y, Wang W. A micropore array-based solid lift-off method for highly efficient and controllable cell alignment and spreading. MICROSYSTEMS & NANOENGINEERING 2020; 6:86. [PMID: 34567696 PMCID: PMC8433473 DOI: 10.1038/s41378-020-00191-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Accepted: 05/03/2020] [Indexed: 05/04/2023]
Abstract
Interpretation of cell-cell and cell-microenvironment interactions is critical for both advancing knowledge of basic biology and promoting applications of regenerative medicine. Cell patterning has been widely investigated in previous studies. However, the reported methods cannot simultaneously realize precise control of cell alignment and adhesion/spreading with a high efficiency at a high throughput. Here, a novel solid lift-off method with a micropore array as a shadow mask was proposed. Efficient and precise control of cell alignment and adhesion/spreading are simultaneously achieved via an ingeniously designed shadow mask, which contains large micropores (capture pores) in central areas and small micropores (spreading pores) in surrounding areas contributing to capture/alignment and adhesion/spreading control, respectively. The solid lift-off functions as follows: (1) protein micropattern generates through both the capture and spreading pores, (2) cell capture/alignment control is realized through the capture pores, and (3) cell adhesion/spreading is controlled through previously generated protein micropatterns after lift-off of the shadow mask. High-throughput (2.4-3.2 × 104 cells/cm2) cell alignments were achieved with high efficiencies (86.2 ± 3.2%, 56.7 ± 9.4% and 51.1 ± 4.0% for single-cell, double-cell, and triple-cell alignments, respectively). Precise control of cell spreading and applications for regulating cell skeletons and cell-cell junctions were investigated and verified using murine skeletal muscle myoblasts. To the best of our knowledge, this is the first report to demonstrate highly efficient and controllable multicell alignment and adhesion/spreading simultaneously via a simple solid lift-off operation. This study successfully fills a gap in literatures and promotes the effective and reproducible application of cell patterning in the fields of both basic mechanism studies and applied medicine.
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Affiliation(s)
- Tingting Hun
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, 100191 Beijing, China
- Institute of Microelectronics, Peking University, 100871 Beijing, China
- State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, 200050 Shanghai, China
| | - Yaoping Liu
- Institute of Microelectronics, Peking University, 100871 Beijing, China
| | - Yechang Guo
- Institute of Microelectronics, Peking University, 100871 Beijing, China
| | - Yan Sun
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, 100191 Beijing, China
- State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, 200050 Shanghai, China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, 100083 Beijing, China
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, 100191 Beijing, China
- State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, 200050 Shanghai, China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, 100083 Beijing, China
| | - Wei Wang
- Institute of Microelectronics, Peking University, 100871 Beijing, China
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, 100871 Beijing, China
- Frontiers Science Center for Nano-optoelectronics, Peking University, 100871 Beijing, China
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168
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Ma Z, Holle AW, Melde K, Qiu T, Poeppel K, Kadiri VM, Fischer P. Acoustic Holographic Cell Patterning in a Biocompatible Hydrogel. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1904181. [PMID: 31782570 DOI: 10.1002/adma.201904181] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 09/11/2019] [Indexed: 05/21/2023]
Abstract
Acoustophoresis is promising as a rapid, biocompatible, noncontact cell manipulation method, where cells are arranged along the nodes or antinodes of the acoustic field. Typically, the acoustic field is formed in a resonator, which results in highly symmetric regular patterns. However, arbitrary, nonsymmetrically shaped cell assemblies are necessary to obtain the irregular cellular arrangements found in biological tissues. It is shown that arbitrarily shaped cell patterns can be obtained from the complex acoustic field distribution defined by an acoustic hologram. Attenuation of the sound field induces localized acoustic streaming and the resultant convection flow gently delivers the suspended cells to the image plane where they form the designed pattern. It is shown that the process can be implemented in a biocompatible collagen solution, which can then undergo gelation to immobilize the cell pattern inside the viscoelastic matrix. The patterned cells exhibit F-actin-based protrusions, which indicate that the cells grow and thrive within the matrix. Cell viability assays and brightfield imaging after one week confirm cell survival and that the patterns persist. Acoustophoretic cell manipulation by holographic fields thus holds promise for noncontact, long-range, long-term cellular pattern formation, with a wide variety of potential applications in tissue engineering and mechanobiology.
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Affiliation(s)
- Zhichao Ma
- Max Planck Institute for Intelligent Systems, Heisenbergstr. 3, 70569, Stuttgart, Germany
| | - Andrew W Holle
- Department of Cellular Biophysics, Max Planck Institute for Medical Research, Heidelberg, 69120, Germany
| | - Kai Melde
- Max Planck Institute for Intelligent Systems, Heisenbergstr. 3, 70569, Stuttgart, Germany
| | - Tian Qiu
- Max Planck Institute for Intelligent Systems, Heisenbergstr. 3, 70569, Stuttgart, Germany
- Institute of Physical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Korbinian Poeppel
- Max Planck Institute for Intelligent Systems, Heisenbergstr. 3, 70569, Stuttgart, Germany
| | - Vincent Mauricio Kadiri
- Max Planck Institute for Intelligent Systems, Heisenbergstr. 3, 70569, Stuttgart, Germany
- Institute of Physical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Peer Fischer
- Max Planck Institute for Intelligent Systems, Heisenbergstr. 3, 70569, Stuttgart, Germany
- Institute of Physical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
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169
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Qian J, Ren J, Liu Y, Lam RHW, Lee JEY. A two-chip acoustofluidic particle manipulation platform with a detachable and reusable surface acoustic wave device. Analyst 2020; 145:7752-7758. [DOI: 10.1039/d0an01469a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A two-chip acoustofluidic particle manipulation platform with a detachable and reusable surface acoustic wave device enables manipulation of microparticles in 2D on a replaceable silicon superstrate.
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Affiliation(s)
- Jingui Qian
- Department of Electrical Engineering
- City University of Hong Kong
- Kowloon
- Hong Kong SAR
| | - Jifeng Ren
- Department of Biomedical Engineering
- City University of Hong Kong
- Kowloon
- Hong Kong SAR
| | - Yi Liu
- Department of Biomedical Engineering
- City University of Hong Kong
- Kowloon
- Hong Kong SAR
| | - Raymond H. W. Lam
- Department of Biomedical Engineering
- City University of Hong Kong
- Kowloon
- Hong Kong SAR
| | - Joshua E.-Y. Lee
- Department of Electrical Engineering
- City University of Hong Kong
- Kowloon
- Hong Kong SAR
- State Key Laboratory of Terahertz and Millimeter Waves
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170
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Zhai J, Li H, Wong AHH, Dong C, Yi S, Jia Y, Mak PI, Deng CX, Martins RP. A digital microfluidic system with 3D microstructures for single-cell culture. MICROSYSTEMS & NANOENGINEERING 2020; 6:6. [PMID: 34567621 PMCID: PMC8433300 DOI: 10.1038/s41378-019-0109-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 08/12/2019] [Accepted: 09/30/2019] [Indexed: 05/12/2023]
Abstract
Despite the precise controllability of droplet samples in digital microfluidic (DMF) systems, their capability in isolating single cells for long-time culture is still limited: typically, only a few cells can be captured on an electrode. Although fabricating small-sized hydrophilic micropatches on an electrode aids single-cell capture, the actuation voltage for droplet transportation has to be significantly raised, resulting in a shorter lifetime for the DMF chip and a larger risk of damaging the cells. In this work, a DMF system with 3D microstructures engineered on-chip is proposed to form semi-closed micro-wells for efficient single-cell isolation and long-time culture. Our optimum results showed that approximately 20% of the micro-wells over a 30 × 30 array were occupied by isolated single cells. In addition, low-evaporation-temperature oil and surfactant aided the system in achieving a low droplet actuation voltage of 36V, which was 4 times lower than the typical 150 V, minimizing the potential damage to the cells in the droplets and to the DMF chip. To exemplify the technological advances, drug sensitivity tests were run in our DMF system to investigate the cell response of breast cancer cells (MDA-MB-231) and breast normal cells (MCF-10A) to a widely used chemotherapeutic drug, Cisplatin (Cis). The results on-chip were consistent with those screened in conventional 96-well plates. This novel, simple and robust single-cell trapping method has great potential in biological research at the single cell level.
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Affiliation(s)
- Jiao Zhai
- State-Key Laboratory of Analog and Mixed-Signal VLSI, Institute of Microelectronics, University of Macau, Macau SAR, China
| | - Haoran Li
- State-Key Laboratory of Analog and Mixed-Signal VLSI, Institute of Microelectronics, University of Macau, Macau SAR, China
- Faculty of Science and Technology-ECE, University of Macau, Macau SAR, China
| | - Ada Hang-Heng Wong
- Cancer Center, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Cheng Dong
- State-Key Laboratory of Analog and Mixed-Signal VLSI, Institute of Microelectronics, University of Macau, Macau SAR, China
| | - Shuhong Yi
- Liver Transplantation Center, the Third Affiliated Hospital, Sun Yat-sen University, 510000 Guangzhou, China
| | - Yanwei Jia
- State-Key Laboratory of Analog and Mixed-Signal VLSI, Institute of Microelectronics, University of Macau, Macau SAR, China
- Faculty of Science and Technology-ECE, University of Macau, Macau SAR, China
- Cancer Center, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Pui-In Mak
- State-Key Laboratory of Analog and Mixed-Signal VLSI, Institute of Microelectronics, University of Macau, Macau SAR, China
- Faculty of Science and Technology-ECE, University of Macau, Macau SAR, China
| | - Chu-Xia Deng
- Cancer Center, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Rui P. Martins
- State-Key Laboratory of Analog and Mixed-Signal VLSI, Institute of Microelectronics, University of Macau, Macau SAR, China
- Faculty of Science and Technology-ECE, University of Macau, Macau SAR, China
- on leave from Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
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171
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Richard C, Fakhfouri A, Colditz M, Striggow F, Kronstein-Wiedemann R, Tonn T, Medina-Sánchez M, Schmidt OG, Gemming T, Winkler A. Blood platelet enrichment in mass-producible surface acoustic wave (SAW) driven microfluidic chips. LAB ON A CHIP 2019; 19:4043-4051. [PMID: 31723953 DOI: 10.1039/c9lc00804g] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The ability to separate specific biological components from cell suspensions is indispensable for liquid biopsies, and for personalized diagnostics and therapy. This paper describes an advanced surface acoustic wave (SAW) based device designed for the enrichment of platelets (PLTs) from a dispersion of PLTs and red blood cells (RBCs) at whole blood concentrations, opening new possibilities for diverse applications involving cell manipulation with high throughput. The device is made of patterned SU-8 photoresist that is lithographically defined on the wafer scale with a new proposed methodology. The blood cells are initially focused and subsequently separated by an acoustic radiation force (ARF) applied through standing SAWs (SSAWs). By means of flow cytometric analysis, the PLT concentration factor was found to be 7.7, and it was proven that the PLTs maintain their initial state. A substantially higher cell throughput and considerably lower applied powers than comparable devices from literature were achieved. In addition, fully coupled 3D numerical simulations based on SAW wave field measurements were carried out to anticipate the coupling of the wave field into the fluid, and to obtain the resulting pressure field. A comparison to the acoustically simpler case of PDMS channel walls is given. The simulated results show an ideal match to the experimental observations and offer the first insights into the acoustic behavior of SU-8 as channel wall material. The proposed device is compatible with current (Lab-on-a-Chip) microfabrication techniques allowing for mass-scale, reproducible chip manufacturing which is crucial to push the technology from lab-based to real-world applications.
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Affiliation(s)
- Cynthia Richard
- Leibniz-IFW Dresden, Helmholtzstr. 20, 01069 Dresden, Germany.
| | | | - Melanie Colditz
- Leibniz-IFW Dresden, Helmholtzstr. 20, 01069 Dresden, Germany.
| | | | - Romy Kronstein-Wiedemann
- Experimentelle Transfusionsmedizin, Medizinische Fakultät Carl Gustav Carus der Technischen Universität Dresden/DRK-Blutspendedienst Nord-Ost gGmbH, Blasewitzer str. 68/70, 01370 Dresden, Germany
| | - Torsten Tonn
- Experimentelle Transfusionsmedizin, Medizinische Fakultät Carl Gustav Carus der Technischen Universität Dresden/DRK-Blutspendedienst Nord-Ost gGmbH, Blasewitzer str. 68/70, 01370 Dresden, Germany
| | | | | | - Thomas Gemming
- Leibniz-IFW Dresden, Helmholtzstr. 20, 01069 Dresden, Germany.
| | - Andreas Winkler
- Leibniz-IFW Dresden, Helmholtzstr. 20, 01069 Dresden, Germany.
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172
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Guevara Vasquez F, Mauck C. Periodic particle arrangements using standing acoustic waves. Proc Math Phys Eng Sci 2019; 475:20190574. [PMID: 31892838 DOI: 10.1098/rspa.2019.0574] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 11/18/2019] [Indexed: 01/27/2023] Open
Abstract
We determine crystal-like materials that can be fabricated by using a standing acoustic wave to arrange small particles in a non-viscous liquid resin, which is cured afterwards to keep the particles in the desired locations. For identical spherical particles with the same physical properties and small compared to the wavelength, the locations where the particles are trapped correspond to the minima of an acoustic radiation potential which describes the net forces that a particle is subject to. We show that the global minima of spatially periodic acoustic radiation potentials can be predicted by the eigenspace of a small real symmetric matrix corresponding to its smallest eigenvalue. We relate symmetries of this eigenspace to particle arrangements composed of points, lines or planes. Since waves are used to generate the particle arrangements, the arrangement's periodicity is limited to certain Bravais lattice classes that we enumerate in two and three dimensions.
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Affiliation(s)
| | - China Mauck
- Mathematics Department, University of Utah, Salt Lake City, UT 84112, USA
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173
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Zheng Z, Niu P, Wang X, Fernández-Sánchez C, Ning Y, Zhao L, Zhang M, Duan X, Pang W. Miniature Gigahertz Acoustic Resonator and On-Chip Electrochemical Sensor: An Emerging Combination for Electroanalytical Microsystems. Anal Chem 2019; 91:15959-15966. [PMID: 31750653 DOI: 10.1021/acs.analchem.9b04508] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Performance of electroanalytical lab-on-a-chip devices is often limited by the mass transfer of electroactive species toward the electrode surface, due to the difficulty in applying external convection. This article describes the powerful signal enhancement attained with a 2.54 GHz miniature acoustic resonator integrated with an electrochemical device in a miniaturized cell. Acoustic resonator and an on-chip gold thin-film three-electrode electrochemical cell were arranged facing each other inside a structured poly(methyl methacrylate) chamber. Cyclic voltammetric and chronoamperometric responses of 1 mM ferrocene-methanol were recorded under resonator's actuation at powers ranging from 0 to 1 W. Finite element analysis was carried out to study the sono-electroanalytical process. Acoustic resonator's actuation greatly enhances the mass transport of electroactive species toward the electrode surface. The diffusion limited cyclic voltammetric and chronoamperometric currents increase around 10 and 20 times, respectively, with an input power of 1 W compared to those recorded under stagnant conditions. The improvement in electroanalytical process is mainly associated with acoustic resonator's vibration induced fluid streaming. The advantages of a miniaturized acoustic resonator, including the submillimeter small size, amenability for mass fabrication, cost effectiveness, low energy consumption, as well as outstanding enhancement of coupled electrochemical processes, will enable the production of highly sensitive compact electroanalytical devices.
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Affiliation(s)
- Zongwei Zheng
- State Key Laboratory of Precision Measuring Technology & Instruments , Tianjin University , Tianjin 300072 , China
| | - Pengfei Niu
- State Key Laboratory of Precision Measuring Technology & Instruments , Tianjin University , Tianjin 300072 , China
| | - Xiaohe Wang
- State Key Laboratory of Precision Measuring Technology & Instruments , Tianjin University , Tianjin 300072 , China
| | - César Fernández-Sánchez
- Instituto de Microelectrónica de Barcelona, IMB-CNM (CSIC) , Campus UAB , 08193 Bellaterra , Spain
| | - Yuan Ning
- State Key Laboratory of Precision Measuring Technology & Instruments , Tianjin University , Tianjin 300072 , China
| | - Lei Zhao
- State Key Laboratory of Precision Measuring Technology & Instruments , Tianjin University , Tianjin 300072 , China
| | - Menglun Zhang
- State Key Laboratory of Precision Measuring Technology & Instruments , Tianjin University , Tianjin 300072 , China
| | - Xuexin Duan
- State Key Laboratory of Precision Measuring Technology & Instruments , Tianjin University , Tianjin 300072 , China
| | - Wei Pang
- State Key Laboratory of Precision Measuring Technology & Instruments , Tianjin University , Tianjin 300072 , China
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174
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Differential impedance spectra analysis reveals optimal actuation frequency in bulk mode acoustophoresis. Sci Rep 2019; 9:19081. [PMID: 31836756 PMCID: PMC6911075 DOI: 10.1038/s41598-019-55333-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 11/26/2019] [Indexed: 11/09/2022] Open
Abstract
This work reports a method to select the optimal working frequency in transversal bulk resonator acoustophoretic devices by electrical impedance measurements. The impedance spectra of acoustophoretic devices are rich in spurious resonance peaks originating from different resonance modes in the system not directly related to the channel resonance, why direct measurement of the piezoelectric transducer impedance spectra is not a viable strategy. This work presents, for the first time, that the resonance modes of microchip integrated acoustophoresis channels can be identified by sequentially measuring the impedance spectra of the acoustophoretic device when the channel is filled with two different fluids and subsequently calculate the Normalized Differential Spectrum (NDS). Seven transversal bulk resonator acoustophoretic devices of different materials and designs were tested with successful results. The developed method enables a rapid, reproducible and precise determination of the optimal working frequency.
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175
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Devendran C, Carthew J, Frith JE, Neild A. Cell Adhesion, Morphology, and Metabolism Variation via Acoustic Exposure within Microfluidic Cell Handling Systems. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1902326. [PMID: 31871874 PMCID: PMC6918100 DOI: 10.1002/advs.201902326] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 10/04/2019] [Indexed: 05/04/2023]
Abstract
Acoustic fields are capable of manipulating biological samples contained within the enclosed and highly controlled environment of a microfluidic chip in a versatile manner. The use of acoustic streaming to alter fluid flows and radiation forces to control cell locations has important clinical and life science applications. While there have been significant advances in the fundamental implementation of these acoustic mechanisms, there is a considerable lack of understanding of the associated biological effects on cells. Typically a single, simple viability assay is used to demonstrate a high proportion of living cells. However, the findings of this study demonstrate that acoustic exposure can inhibit cell attachment, decrease cell spreading, and most intriguingly increase cellular metabolic activity, all without any impact upon viability rates. This has important implications by showing that mortality studies alone are inadequate for the assessment of biocompatibility, but further demonstrates that physical manipulation of cells can also be used to influence their biological activity.
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Affiliation(s)
- Citsabehsan Devendran
- Laboratory for Micro SystemsDepartment of Mechanical and Aerospace EngineeringMonash UniversityClaytonVIC3800Australia
| | - James Carthew
- Department of Materials Science and EngineeringMonash UniversityClaytonVIC3800Australia
| | - Jessica E. Frith
- Department of Materials Science and EngineeringMonash UniversityClaytonVIC3800Australia
| | - Adrian Neild
- Laboratory for Micro SystemsDepartment of Mechanical and Aerospace EngineeringMonash UniversityClaytonVIC3800Australia
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176
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Li L, Wang H, Huang L, Michael SA, Huang W, Wu H. A Controllable, Centrifugal-Based Hydrodynamic Microfluidic Chip for Cell-Pairing and Studying Long-Term Communications between Single Cells. Anal Chem 2019; 91:15908-15914. [DOI: 10.1021/acs.analchem.9b04370] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Lijun Li
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water
Bay, Kowloon, Hong Kong, China
- Department of Biology, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, Southern University of Science and Technology, Shenzhen 518055, China
| | - Huirong Wang
- Department of Biology, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, Southern University of Science and Technology, Shenzhen 518055, China
| | - Lu Huang
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water
Bay, Kowloon, Hong Kong, China
| | - Sean Alan Michael
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water
Bay, Kowloon, Hong Kong, China
| | - Wei Huang
- Department of Biology, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, Southern University of Science and Technology, Shenzhen 518055, China
| | - Hongkai Wu
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water
Bay, Kowloon, Hong Kong, China
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177
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Tung KW, Chung PS, Wu C, Man T, Tiwari S, Wu B, Chou YF, Yang FL, Chiou PY. Deep, sub-wavelength acoustic patterning of complex and non-periodic shapes on soft membranes supported by air cavities. LAB ON A CHIP 2019; 19:3714-3725. [PMID: 31584051 DOI: 10.1039/c9lc00612e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Arbitrary patterning of micro-objects in liquid is crucial to many biomedical applications. Among conventional methodologies, acoustic approaches provide superior biocompatibility but are intrinsically limited to producing periodic patterns at low resolution due to the nature of standing waves and the coupling between fluid and structure vibrations. This work demonstrates a near-field acoustic platform capable of synthesizing high resolution, complex and non-periodic energy potential wells. A thin and viscoelastic membrane is utilized to modulate the acoustic wavefront on a deep, sub-wavelength scale by suppressing the structural vibration selectively on the platform. Using 3 MHz excitation (λ∼ 500 μm in water), we have experimentally validated such a concept by realizing patterning of microparticles and cells with a line resolution of 50 μm (one tenth of the wavelength). Furthermore, massively parallel patterning across a 3 × 3 mm2 area has been achieved. This new acoustic wavefront modulation mechanism is powerful for manufacturing complex biologic products.
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Affiliation(s)
- Kuan-Wen Tung
- Department of Mechanical and Aerospace Engineering, University of California at Los Angeles, 420 Westwood Plaza, Los Angeles, CA 90095, USA.
| | - Pei-Shan Chung
- Department of Bioengineering, University of California at Los Angeles, 410 Westwood Plaza, Los Angeles, CA 90095, USA
| | - Cong Wu
- Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Tat Chee Ave, Kowloon Tong, Hong Kong
| | - Tianxing Man
- Department of Mechanical and Aerospace Engineering, University of California at Los Angeles, 420 Westwood Plaza, Los Angeles, CA 90095, USA.
| | - Sidhant Tiwari
- Department of Electrical and Computer Engineering, University of California at Los Angeles, 420 Westwood Plaza, Los Angeles, CA 90095, USA
| | - Ben Wu
- Department of Bioengineering, University of California at Los Angeles, 410 Westwood Plaza, Los Angeles, CA 90095, USA and Department of Materials Science and Engineering, University of California at Los Angeles, 410 Westwood Plaza, Los Angeles, CA 90095, USA and Division of Advanced Prosthodontics, School of Dentistry, University of California at Los Angeles, 714 Tiverton Ave, Los Angeles, CA 90024, USA and Department of Orthopedic Surgery, School of Medicine, University of California at Los Angeles, 10833 Le Conte Ave, Los Angeles, CA 90095, USA
| | - Yuan-Fang Chou
- Department of Mechanical and Aerospace Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Rd, Da'an District, Taipei City, 10617, Taiwan
| | - Fu-Ling Yang
- Department of Mechanical and Aerospace Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Rd, Da'an District, Taipei City, 10617, Taiwan
| | - Pei-Yu Chiou
- Department of Mechanical and Aerospace Engineering, University of California at Los Angeles, 420 Westwood Plaza, Los Angeles, CA 90095, USA. and Department of Bioengineering, University of California at Los Angeles, 410 Westwood Plaza, Los Angeles, CA 90095, USA
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178
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Wang Z, Lang B, Qu Y, Li L, Song Z, Wang Z. Single-cell patterning technology for biological applications. BIOMICROFLUIDICS 2019; 13:061502. [PMID: 31737153 PMCID: PMC6847985 DOI: 10.1063/1.5123518] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Accepted: 10/15/2019] [Indexed: 06/01/2023]
Abstract
Single-cell patterning technology has revealed significant contributions of single cells to conduct basic and applied biological studies in vitro such as the understanding of basic cell functions, neuronal network formation, and drug screening. Unlike traditional population-based cell patterning approaches, single-cell patterning is an effective technology of fully understanding cell heterogeneity by precisely controlling the positions of individual cells. Therefore, much attention is currently being paid to this technology, leading to the development of various micro-nanofabrication methodologies that have been applied to locate cells at the single-cell level. In recent years, various methods have been continuously improved and innovated on the basis of existing ones, overcoming the deficiencies and promoting the progress in biomedicine. In particular, microfluidics with the advantages of high throughput, small sample volume, and the ability to combine with other technologies has a wide range of applications in single-cell analysis. Here, we present an overview of the recent advances in single-cell patterning technology, with a special focus on current physical and physicochemical methods including stencil patterning, trap- and droplet-based microfluidics, and chemical modification on surfaces via photolithography, microcontact printing, and scanning probe lithography. Meanwhile, the methods applied to biological studies and the development trends of single-cell patterning technology in biological applications are also described.
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Affiliation(s)
| | - Baihe Lang
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China
| | | | | | | | - Zuobin Wang
- Author to whom correspondence should be addressed:
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179
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Huang H, Wei Z, Liou J, Zhao W, Xu X. Localization of cells using magnetized patterned thin films. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 104:109875. [DOI: 10.1016/j.msec.2019.109875] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 08/31/2018] [Accepted: 06/07/2019] [Indexed: 10/26/2022]
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180
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Zhou W, Chen M, Liu X, Zhang W, Cai F, Li F, Wu J, Wang J, Wang Y, Huang X, Lin Z, Zhou H, Meng L, Niu L, Zheng H. Selective photothermal ablation of cancer cells by patterned gold nanocages using surface acoustic waves. LAB ON A CHIP 2019; 19:3387-3396. [PMID: 31517364 DOI: 10.1039/c9lc00344d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The patterning of nanoparticles, which are promising photothermal agents, is of great importance to selectively and precisely ablate tissues by thermal effects. In this paper, we demonstrated that nano-sized gold particles (gold nanocages, AuNCS) with a hollow structure could be used to generate various wavefront patterns of surface acoustic waves (SAWs) and the aligned AuNC lines facilitated the destruction of cancer cells by the thermal effect with high spatial resolution. The hollow structure improved the acoustic sensitivity of AuNCs, making them more sensitive to the acoustic radiation force. Moreover, the multi-scale patterning of AuNCs could be achieved by the interference of multiple acoustic beams. Given the photothermal characteristics of AuNCs, selective temperature elevation within a micrometer-sized region could be realized when the patterned AuNCs were irradiated by a laser. The cancer cells where the patterned AuNCs were located were eliminated by thermal ablation, while other cells remained alive. In particular, the acoustic frequency used in this study was as low as 11. 35 MHz and was in the range of diagnostic ultrasound (less than 12 MHz), offering a potential to serve as a powerful tool in clinical applications.
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Affiliation(s)
- Wei Zhou
- Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
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181
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Huang K, Lu B, Lai J, Chu HKH. Microchip System for Patterning Cells on Different Substrates via Negative Dielectrophoresis. IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS 2019; 13:1063-1074. [PMID: 31478871 DOI: 10.1109/tbcas.2019.2937744] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Seeding cells on a planar substrate is the first step to construct artificial tissues in vitro. Cells should be organized into a pattern similar to native tissues and cultured on a favorable substrate to facilitate desirable tissue ingrowth. In this study, a microchip system is designed and fabricated to form cells into a specific pattern on different substrates. The system consists of a microchip with a dot-electrode array for cell trapping and patterning and two motorized platforms for providing relative motions between the microchip and the substrate. AC voltage is supplied to the selected electrodes by using a programmable micro control unit to control relays connected to the dot-electrodes. Nonuniform electric fields for cell manipulation are formed via negative dielectrophoresis (n-DEP). Experiments were conducted to create different patterns by using yeast cells. The effects of different experimental parameters and material properties on the patterning efficiency were evaluated and analyzed. Mechanisms to remove abundant cells surrounding the constructed patterns were also examined. Results show that the microchip system could successfully create cell patterns on different substrates. The use of calcium chloride (CaCl 2) enhanced the cell adhesiveness on the substrate. The proposed n-DEP patterning technique offers a new method for constructing artificial tissues with high flexibility on cell patterning and selecting substrate to suit application needs.
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182
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Wang X, Tian L, Du H, Li M, Mu W, Drinkwater BW, Han X, Mann S. Chemical communication in spatially organized protocell colonies and protocell/living cell micro-arrays. Chem Sci 2019; 10:9446-9453. [PMID: 32055320 PMCID: PMC6991169 DOI: 10.1039/c9sc04522h] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 09/11/2019] [Indexed: 12/12/2022] Open
Abstract
Arrays of giant unilamellar vesicles (GUVs) with controllable geometries and occupancies are prepared by acoustic trapping and used to implement chemical signaling in protocell colonies and protocell/living cell consortia.
Micro-arrays of discrete or hemifused giant unilamellar lipid vesicles (GUVs) with controllable spatial geometries, lattice dimensions, trapped occupancies and compositions are prepared by acoustic standing wave patterning, and employed as platforms to implement chemical signaling in GUV colonies and protocell/living cell consortia. The methodology offers an alternative approach to GUV micro-array fabrication and provides new opportunities in protocell research and bottom-up synthetic biology.
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Affiliation(s)
- Xuejing Wang
- State Key Laboratory of Urban Water Resource and Environment , School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin , 150001 , China . .,Centre for Protolife Research and Centre for Organized Matter Chemistry , School of Chemistry University of Bristol , Bristol , BS8 1TS UK .
| | - Liangfei Tian
- Centre for Protolife Research and Centre for Organized Matter Chemistry , School of Chemistry University of Bristol , Bristol , BS8 1TS UK .
| | - Hang Du
- State Key Laboratory of Urban Water Resource and Environment , School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin , 150001 , China .
| | - Mei Li
- Centre for Protolife Research and Centre for Organized Matter Chemistry , School of Chemistry University of Bristol , Bristol , BS8 1TS UK .
| | - Wei Mu
- State Key Laboratory of Urban Water Resource and Environment , School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin , 150001 , China .
| | | | - Xiaojun Han
- State Key Laboratory of Urban Water Resource and Environment , School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin , 150001 , China .
| | - Stephen Mann
- Centre for Protolife Research and Centre for Organized Matter Chemistry , School of Chemistry University of Bristol , Bristol , BS8 1TS UK .
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183
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Gu H, Lee SW, Carnicelli J, Jiang Z, Ren D. Antibiotic Susceptibility of Escherichia coli Cells during Early-Stage Biofilm Formation. J Bacteriol 2019; 201:e00034-19. [PMID: 31061169 PMCID: PMC6707912 DOI: 10.1128/jb.00034-19] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 05/02/2019] [Indexed: 12/17/2022] Open
Abstract
Bacteria form complex multicellular structures on solid surfaces known as biofilms, which allow them to survive in harsh environments. A hallmark characteristic of mature biofilms is the high-level antibiotic tolerance (up to 1,000 times) compared with that of planktonic cells. Here, we report our new findings that biofilm cells are not always more tolerant to antibiotics than planktonic cells in the same culture. Specifically, Escherichia coli RP437 exhibited a dynamic change in antibiotic susceptibility during its early-stage biofilm formation. This phenomenon was not strain specific. Upon initial attachment, surface-associated cells became more sensitive to antibiotics than planktonic cells. By controlling the cell adhesion and cluster size using patterned E. coli biofilms, cells involved in the interaction between cell clusters during microcolony formation were found to be more susceptible to ampicillin than cells within clusters, suggesting a role of cell-cell interactions in biofilm-associated antibiotic tolerance. After this stage, biofilm cells became less susceptible to ampicillin and ofloxacin than planktonic cells. However, when the cells were detached by sonication, both antibiotics were more effective in killing the detached biofilm cells than the planktonic cells. Collectively, these results indicate that biofilm formation involves active cellular activities in adaption to the attached life form and interactions between cell clusters to build the complex structure of a biofilm, which can render these cells more susceptible to antibiotics. These findings shed new light on bacterial antibiotic susceptibility during biofilm formation and can guide the design of better antifouling surfaces, e.g., those with micron-scale topographic structures to interrupt cell-cell interactions.IMPORTANCE Mature biofilms are known for their high-level tolerance to antibiotics; however, antibiotic susceptibility of sessile cells during early-stage biofilm formation is not well understood. In this study, we aim to fill this knowledge gap by following bacterial antibiotic susceptibility during early-stage biofilm formation. We found that the attached cells have a dynamic change in antibiotic susceptibility, and during certain phases, they can be more sensitive to antibiotics than planktonic counterparts in the same culture. Using surface chemistry-controlled patterned biofilm formation, cell-surface and cell-cell interactions were found to affect the antibiotic susceptibility of attached cells. Collectively, these findings provide new insights into biofilm physiology and reveal how adaptation to the attached life form may influence antibiotic susceptibility of bacterial cells.
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Affiliation(s)
- Huan Gu
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, New York, USA
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, New York, USA
| | - Sang Won Lee
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, New York, USA
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, New York, USA
| | - Joseph Carnicelli
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, New York, USA
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, New York, USA
| | - Zhaowei Jiang
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, New York, USA
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, New York, USA
| | - Dacheng Ren
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, New York, USA
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, New York, USA
- Department of Civil and Environmental Engineering, Syracuse University, Syracuse, New York, USA
- Department of Biology, Syracuse University, Syracuse, New York, USA
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184
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Habibi R, Neild A. Sound wave activated nano-sieve (SWANS) for enrichment of nanoparticles. LAB ON A CHIP 2019; 19:3032-3044. [PMID: 31396609 DOI: 10.1039/c9lc00369j] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Acoustic actuation is widely used in microfluidic systems as a method of controlling the behaviour of suspended matter. When acoustic waves impinge on particles, a radiation force is exerted which can cause migration over multiple acoustic time periods; in addition the scattering of the wave by the particle will affect the behaviour of nearby particles. This interparticle effect, or Bjerknes force, tends to attract particles together. Here, instead of manipulating a dilute sample of particles, we examine the acoustic excitation of a packed bed. We fill a microfluidic channel with microparticles, such that they form a closely packed structure and then excite them at the particle's resonant frequency. In this scenario, each particle acts as a source of scattered waves and we show that these waves are highly effective at attracting nanoparticles onto the surface of the microparticles, and nanoparticle collection characterises the performance of this mechanically activated packed bed.
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Affiliation(s)
- Ruhollah Habibi
- Laboratory for Micro Systems, Department of Mechanical and Aerospace Engineering, Monash University, Clayton, Victoria 3800, Australia.
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185
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Mi S, Yang S, Liu T, Du Z, Xu Y, Li B, Sun W. A Novel Controllable Cell Array Printing Technique on Microfluidic Chips. IEEE Trans Biomed Eng 2019; 66:2512-2520. [DOI: 10.1109/tbme.2019.2891016] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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186
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Ni Z, Yin C, Xu G, Xie L, Huang J, Liu S, Tu J, Guo X, Zhang D. Modelling of SAW-PDMS acoustofluidics: physical fields and particle motions influenced by different descriptions of the PDMS domain. LAB ON A CHIP 2019; 19:2728-2740. [PMID: 31292597 DOI: 10.1039/c9lc00431a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In modelling acoustofluidic chips actuated by surface acoustic waves (SAWs) and using polydimethylsilane (PDMS) as a channel material, reduced models are often adopted to describe the acoustic behaviors of PDMS. Here, based on a standing SAW (SSAW) acoustophoresis chip, we compared three different descriptions of a PDMS chamber and looked into in-chamber physical fields and ensuing particle motion processes through finite element (FE) simulations. Specifically, the PDMS domain was considered as an elastic solid material, a non-flow fluid, and a lossy wall, respectively. The major findings include: (a) the shear waves that propagated in a solid PDMS wall did not influence the in-chamber pressure and ARF fields severely, but induced an observable difference in the acoustic streaming (AS) patterns, and distinctly changed the trajectories of polystyrene particles, especially those whose radii were below 1.5 μm; and (b) the equivalent damping coefficients were linearly dependent on the SAW frequency, characterized by a fixed loss per wavelength, indicating the wave leakage at the interface being the main source of the transmission loss of SAWs. Meanwhile, the acoustic radiation force (ARF) can be overestimated when describing PDMS as a lossy wall, especially at the bottom corners of the chamber, which could cause inaccurate predictions of the motion of big particles. Based on the damping mechanism, a rough protocol is provided for scaling of pressure fields between different models. Some suggestions for device designs and operations are also given based on the obtained findings.
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Affiliation(s)
- Zhengyang Ni
- Key Laboratory of Modern Acoustics (MOE), Department of Physics, Collaborative Innovation Center of Advanced Microstructure, Nanjing University, Nanjing 210093, China.
| | - Chuhao Yin
- Key Laboratory of Modern Acoustics (MOE), Department of Physics, Collaborative Innovation Center of Advanced Microstructure, Nanjing University, Nanjing 210093, China.
| | - Guangyao Xu
- Key Laboratory of Modern Acoustics (MOE), Department of Physics, Collaborative Innovation Center of Advanced Microstructure, Nanjing University, Nanjing 210093, China.
| | - Linzhou Xie
- Key Laboratory of Modern Acoustics (MOE), Department of Physics, Collaborative Innovation Center of Advanced Microstructure, Nanjing University, Nanjing 210093, China.
| | - Junjie Huang
- Key Laboratory of Modern Acoustics (MOE), Department of Physics, Collaborative Innovation Center of Advanced Microstructure, Nanjing University, Nanjing 210093, China.
| | - Shilei Liu
- Key Laboratory of Modern Acoustics (MOE), Department of Physics, Collaborative Innovation Center of Advanced Microstructure, Nanjing University, Nanjing 210093, China.
| | - Juan Tu
- Key Laboratory of Modern Acoustics (MOE), Department of Physics, Collaborative Innovation Center of Advanced Microstructure, Nanjing University, Nanjing 210093, China.
| | - Xiasheng Guo
- Key Laboratory of Modern Acoustics (MOE), Department of Physics, Collaborative Innovation Center of Advanced Microstructure, Nanjing University, Nanjing 210093, China.
| | - Dong Zhang
- Key Laboratory of Modern Acoustics (MOE), Department of Physics, Collaborative Innovation Center of Advanced Microstructure, Nanjing University, Nanjing 210093, China. and The State Key Laboratory of Acoustics, Chinese Academy of Science, Beijing 10080, China
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187
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Cui W, Mu L, Duan X, Pang W, Reed MA. Trapping of sub-100 nm nanoparticles using gigahertz acoustofluidic tweezers for biosensing applications. NANOSCALE 2019; 11:14625-14634. [PMID: 31240289 DOI: 10.1039/c9nr03529j] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this study, we present a nanoscale acoustofluidic trap (AFT) that manipulates nanoparticles in a microfluidic system actuated by a gigahertz acoustic resonator. The AFT generates independent standing closed vortices with high-speed rotation. Via careful design and optimization of geometric confinements, the AFT was able to effectively capture and enrich sub-100 nm nanoparticles with a low power consumption (0.25-5 μW μm-2) and rapid trapping (within 30 s), showing significantly enhanced particle-operating ability as compared to its acoustic and optical counterparts; using specifically functionalized nanoparticles (SFNPs) to selectively capture target molecules from the sample, the AFT led to the molecular concentration enhancement of ∼200 times. We investigated the feasibility of the SFNP-assisted AFT preconcentration method for biosensing applications and successfully demonstrated the capability of this method for the detection of serum prostate-specific antigen (PSA). The AFT was prepared via a fully CMOS-compatible process and thus could be conveniently integrated on a single chip, with potential for "lab-on-a-chip" or point-of-care (POC) nanoparticle-based biosensing applications.
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Affiliation(s)
- Weiwei Cui
- State Key Laboratory of Precision Measuring Technology & Instruments, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China.
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188
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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189
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Abstract
Cellular analysis is a central concept for both biology and medicine. Over the past two decades, acoustofluidic technologies, which marry acoustic waves with microfluidics, have significantly contributed to the development of innovative approaches for cellular analysis. Acoustofluidic technologies enable precise manipulations of cells and the fluids that confine them, and these capabilities have been utilized in many cell analysis applications. In this review article, we examine various applications where acoustofluidic methods have been implemented, including cell imaging, cell mechanotyping, circulating tumor cell phenotyping, sample preparation in clinics, and investigation of cell-cell interactions and cell-environment responses. We also provide our perspectives on the technological advantages, limitations, and potential future directions for this innovative field of methods.
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Affiliation(s)
- Yuliang Xie
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802, USA
| | - Hunter Bachman
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC 27707, USA
| | - Tony Jun Huang
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC 27707, USA
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190
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Engineering multi-layered tissue constructs using acoustic levitation. Sci Rep 2019; 9:9789. [PMID: 31278312 PMCID: PMC6611909 DOI: 10.1038/s41598-019-46201-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 06/14/2019] [Indexed: 02/07/2023] Open
Abstract
Engineering tissue structures that mimic those found in vivo remains a challenge for modern biology. We demonstrate a new technique for engineering composite structures of cells comprising layers of heterogeneous cell types. An acoustofluidic bioreactor is used to assemble epithelial cells into a sheet-like structure. On transferring these cell sheets to a confluent layer of fibroblasts, the epithelial cells cover the fibroblast surface by collective migration maintaining distinct epithelial and fibroblast cell layers. The collective behaviour of the epithelium is dependent on the formation of cell-cell junctions during levitation and contrasts with the behaviour of mono-dispersed epithelial cells where cell-matrix interactions dominate and hinder formation of discrete cell layers. The multilayered tissue model is shown to form a polarised epithelial barrier and respond to apical challenge. The method is useful for engineering a wide range of layered tissue types and mechanistic studies on collective cell migration.
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191
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Tani K, Fujiwara K, Koyama D. Adhesive cell patterning technique using ultrasound vibrations. ULTRASONICS 2019; 96:18-23. [PMID: 30939389 DOI: 10.1016/j.ultras.2019.03.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 02/11/2019] [Accepted: 03/27/2019] [Indexed: 06/09/2023]
Abstract
This paper investigated an ultrasound vibration cell patterning technique. The ultrasound cell culture dish consisted of a culture dish with a glass bottom and a glass disc with a piezoelectric ring that generated a resonance flexural vibration mode on the bottom of the dish. The growth of HeLa cells on the dish was observed under ultrasound excitation for 24 h. Large ultrasound vibrations on the dish inhibited the cell growth. The acoustic field was predicted with finite element analysis and it was found that the cell growth depended strongly on both the acoustic field in the culture medium and the vibration distribution of the dish. The ultrasound vibrations did not affect the viability of the cells, and the cell growth could be controlled by the flexural vibration of the cultured dish.
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Affiliation(s)
- Kentaro Tani
- Faculty of Science and Engineering, Doshisha University, 1-3 Tataramiyakodani, Kyotanabe, Kyoto 610-0321, Japan
| | - Koji Fujiwara
- Faculty of Science and Engineering, Doshisha University, 1-3 Tataramiyakodani, Kyotanabe, Kyoto 610-0321, Japan
| | - Daisuke Koyama
- Faculty of Science and Engineering, Doshisha University, 1-3 Tataramiyakodani, Kyotanabe, Kyoto 610-0321, Japan.
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192
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Fornell A, Johannesson C, Searle SS, Happstadius A, Nilsson J, Tenje M. An acoustofluidic platform for non-contact trapping of cell-laden hydrogel droplets compatible with optical microscopy. BIOMICROFLUIDICS 2019; 13:044101. [PMID: 31312286 PMCID: PMC6624123 DOI: 10.1063/1.5108583] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 06/20/2019] [Indexed: 05/16/2023]
Abstract
Production of cell-laden hydrogel droplets as miniaturized niches for 3D cell culture provides a new route for cell-based assays. Such production can be enabled by droplet microfluidics and here we present a droplet trapping system based on bulk acoustic waves for handling hydrogel droplets in a continuous flow format. The droplet trapping system consists of a glass capillary equipped with a small piezoelectric transducer. By applying ultrasound (4 MHz), a localized acoustic standing wave field is generated in the capillary, trapping the droplets in a well-defined cluster above the transducer area. The results show that the droplet cluster can be retained at flow rates of up to 76 μl/min, corresponding to an average flow speed of 3.2 mm/s. The system allows for important operations such as continuous perfusion and/or addition of chemical reagents to the encapsulated cells with in situ optical access. This feature is demonstrated by performing on-chip staining of the cell nuclei. The key advantages of this trapping method are that it is label-free and gentle and thus well-suited for biological applications. Moreover, the droplets can easily be released on-demand, which facilitates downstream analysis. It is envisioned that the presented droplet trapping system will be a valuable tool for a wide range of multistep assays as well as long-term monitoring of cells encapsulated in gel-based droplets.
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Affiliation(s)
- Anna Fornell
- Department of Engineering Sciences, Science for Life Laboratory, Uppsala University, Box 534, 751 21 Uppsala, Sweden
| | - Carl Johannesson
- Department of Biomedical Engineering, Lund University, Box 118, 221 00 Lund, Sweden
| | | | - Axel Happstadius
- Department of Biomedical Engineering, Lund University, Box 118, 221 00 Lund, Sweden
| | - Johan Nilsson
- Department of Biomedical Engineering, Lund University, Box 118, 221 00 Lund, Sweden
| | - Maria Tenje
- Department of Engineering Sciences, Science for Life Laboratory, Uppsala University, Box 534, 751 21 Uppsala, Sweden
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193
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Liu G, He F, Li Y, Zhao H, Li X, Tang H, Li Z, Yang Z, Zhang Y. Effects of two surface acoustic wave sorting chips on particles multi-level sorting. Biomed Microdevices 2019; 21:59. [PMID: 31227912 DOI: 10.1007/s10544-019-0419-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Particle/cell sorting has great potential in medical diagnosis and chemical analysis. Two kinds of microfluidic sorting chips (sequential sorting chip and direct sorting chip) are designed, which combine hydraulic force and acoustic radiation force to achieve continuous sorting of multiple particles. Firstly, the optimal values of the angle (α) between the interdigital transducer (IDT) and the main channel, the peak-to-peak voltage (Vpp), the main flow velocity (Vmax) and the flow ratio (A) are determined by simulation and experiments, the related optimal parameters were obtained that the α = 15°, Vpp = 25 V, Vmax = 4 mm/s, flow ratio A1 = 0.2, and A2 = 0.5, respectively. Then, the corresponding sorting experiments were carried out using two kinds of sorting chips to sort the polystyrene (PS) particles with diameters of 1 μm, 5 μm, and 10 μm, and the sorting rate and purity of particles were calculated and analyzed. Experimental results show that the two kinds of sorting chips can achieve continuous sorting of multiple particles, and the sorting effect of sequential sorting chip (control flow ratio) is better than that of direct sorting chip. In addition, the sorting chips in our research have the advantages of simple structure, high sorting efficiency, and the ability to sort multiple particles, which can be applied in medical and chemical research fields, such as cell sorting and chemical analysis.
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Affiliation(s)
- Guojun Liu
- College of Mechanical and Aerospace Engineering, Jilin University, Changchun, 130025, China
| | - Fang He
- College of Mechanical and Aerospace Engineering, Jilin University, Changchun, 130025, China
| | - Yan Li
- Emergency Department, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Hong Zhao
- Scientific Research Center, China-Japan Union Hospital of Jilin University, Changchun, China.
| | - Xinbo Li
- College of Communication Engineering, Jilin University, Changchun, 130025, China
| | - Huajie Tang
- College of Mechanical and Aerospace Engineering, Jilin University, Changchun, 130025, China
| | - Zhiqiang Li
- College of Mechanical and Aerospace Engineering, Jilin University, Changchun, 130025, China
| | - Zhigang Yang
- College of Mechanical and Aerospace Engineering, Jilin University, Changchun, 130025, China
| | - Yanyan Zhang
- College of Mechanical and Aerospace Engineering, Jilin University, Changchun, 130025, China
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194
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Wu M, Ozcelik A, Rufo J, Wang Z, Fang R, Jun Huang T. Acoustofluidic separation of cells and particles. MICROSYSTEMS & NANOENGINEERING 2019; 5:32. [PMID: 31231539 PMCID: PMC6545324 DOI: 10.1038/s41378-019-0064-3] [Citation(s) in RCA: 171] [Impact Index Per Article: 34.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 03/12/2019] [Accepted: 03/14/2019] [Indexed: 05/03/2023]
Abstract
Acoustofluidics, the integration of acoustics and microfluidics, is a rapidly growing research field that is addressing challenges in biology, medicine, chemistry, engineering, and physics. In particular, acoustofluidic separation of biological targets from complex fluids has proven to be a powerful tool due to the label-free, biocompatible, and contact-free nature of the technology. By carefully designing and tuning the applied acoustic field, cells and other bioparticles can be isolated with high yield, purity, and biocompatibility. Recent advances in acoustofluidics, such as the development of automated, point-of-care devices for isolating sub-micron bioparticles, address many of the limitations of conventional separation tools. More importantly, advances in the research lab are quickly being adopted to solve clinical problems. In this review article, we discuss working principles of acoustofluidic separation, compare different approaches of acoustofluidic separation, and provide a synopsis of how it is being applied in both traditional applications, such as blood component separation, cell washing, and fluorescence activated cell sorting, as well as emerging applications, including circulating tumor cell and exosome isolation.
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Affiliation(s)
- Mengxi Wu
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC 27708 USA
| | - Adem Ozcelik
- Mechanical Engineering Department, Aydin Adnan Menderes University, 09010 Aydin, Turkey
| | - Joseph Rufo
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC 27708 USA
| | - Zeyu Wang
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC 27708 USA
| | - Rui Fang
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138 USA
| | - Tony Jun Huang
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC 27708 USA
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195
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Silva GT, Tian L, Franklin A, Wang X, Han X, Mann S, Drinkwater BW. Acoustic deformation for the extraction of mechanical properties of lipid vesicle populations. Phys Rev E 2019; 99:063002. [PMID: 31330730 DOI: 10.1103/physreve.99.063002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Indexed: 04/30/2023]
Abstract
We use an ultrasonic standing wave to simultaneously trap and deform thousands of soft lipid vesicles immersed in a liquid solution. In our device, acoustic radiation stresses comparable in magnitude to those generated in optical stretching devices are achieved over a spatial extent of more than ten acoustic wavelengths. We solve the acoustic scattering problem in the long-wavelength limit to obtain the radiation stress. The result is then combined with thin-shell elasticity theory to form expressions that relate the deformed geometry to the applied acoustic field intensity. Using observation of the deformed geometry and this model, we rapidly extract mechanical properties, such as the membrane Young's modulus, from populations of lipid vesicles.
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Affiliation(s)
- Glauber T Silva
- Physical Acoustics Group, Instituto de Física, Universidade Federal de Alagoas, Maceió, AL 57072-970, Brazil
| | - Liangfei Tian
- Centre for Protolife Research and Centre for Organized Matter Chemistry, School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Amanda Franklin
- Department of Mechanical Engineering, University of Bristol, Bristol BS8 1TR, United Kingdom
| | - Xuejing Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Xiaojun Han
- State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Stephen Mann
- Centre for Protolife Research and Centre for Organized Matter Chemistry, School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Bruce W Drinkwater
- Department of Mechanical Engineering, University of Bristol, Bristol BS8 1TR, United Kingdom
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196
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Gao D, Jin F, Zhou M, Jiang Y. Recent advances in single cell manipulation and biochemical analysis on microfluidics. Analyst 2019; 144:766-781. [PMID: 30298867 DOI: 10.1039/c8an01186a] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Single cell analysis has become of great interest with unprecedented capabilities for the systematic investigation of cell-to-cell variation in large populations. Rapid and multi-parametric analysis of intercellular biomolecules at the single-cell level is imperative for the improvement of early disease diagnosis and personalized medicine. However, the small size of cells and the low concentration levels of target biomolecules are critical challenges for single cell analysis. In recent years, microfluidic platforms capable of handling small-volume fluid have been demonstrated to be powerful tools for single cell analysis. In addition, microfluidic techniques allow for precise control of the localized microenvironment, which yield more accurate outcomes. Many different microfluidic techniques have been greatly improved for highly efficient single-cell manipulation and highly sensitive detection over the past few decades. To date, microfluidics-based single cell analysis has become the hot research topic in this field. In this review, we particularly highlight the advances in this field during the past three years in the following three aspects: (1) microfluidic single cell manipulation based on microwells, micropatterns, droplets, traps and flow cytometric methods; (2) detection methods based on fluorescence, mass spectrometry, electrochemical, and polymerase chain reaction-based analysis; (3) applications in the fields of small molecule detection, protein analysis, multidrug resistance analysis, and single cell sequencing with droplet microfluidics. We also discuss future research opportunities by focusing on key performances of throughput, multiparametric target detection and data processing.
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Affiliation(s)
- Dan Gao
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Biology, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, P.R. China.
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197
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Liu Y, Chen X, Zhang Y, Liu J. Advancing single-cell proteomics and metabolomics with microfluidic technologies. Analyst 2019; 144:846-858. [PMID: 30351310 DOI: 10.1039/c8an01503a] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Recent advances in single-cell analysis have unraveled substantial heterogeneity among seemingly identical cells at genomic and transcriptomic levels. These discoveries have urged scientists to develop new tools that are capable of investigating single cells from a broader set of "omics". Proteomics and metabolomics, for instance, are of particular interest as they are closely correlated with a dynamic picture of cellular behaviors and phenotypic identities. The development of such tools requires highly efficient isolation and processing of a large number of individual cells, where techniques such as microfluidics are extremely useful. Here, we review the recent advances in single-cell proteomics and metabolomics, with a focus on microfluidics-based platforms. We highlight a vast array of emerging microfluidic formats for single-cell isolation and manipulation, and how the state-of-the-art analytical tools are coupled with such platforms for proteomic and metabolomic profiling.
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Affiliation(s)
- Yifan Liu
- Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu Province 215123, China.
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198
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Sesen M, Fakhfouri A, Neild A. Coalescence of Surfactant-Stabilized Adjacent Droplets Using Surface Acoustic Waves. Anal Chem 2019; 91:7538-7545. [DOI: 10.1021/acs.analchem.8b05456] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Muhsincan Sesen
- Department of Mechanical and Aerospace Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Armaghan Fakhfouri
- Department of Mechanical and Aerospace Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Adrian Neild
- Department of Mechanical and Aerospace Engineering, Monash University, Clayton, Victoria 3800, Australia
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199
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Chen B, Wu Y, Ao Z, Cai H, Nunez A, Liu Y, Foley J, Nephew K, Lu X, Guo F. High-throughput acoustofluidic fabrication of tumor spheroids. LAB ON A CHIP 2019; 19:1755-1763. [PMID: 30918934 DOI: 10.1039/c9lc00135b] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Three-dimensional (3D) culture of multicellular spheroids, offering a desirable biomimetic microenvironment, is appropriate for recapitulating tissue cellular adhesive complexity and revealing a more realistic drug response. However, current 3D culture methods are suffering from low-throughput, poor controllability, intensive-labor, and variation in spheroid size, thus not ready for many high-throughput screening applications including drug discovery and toxicity testing. Herein, we developed a high-throughput multicellular spheroid fabrication method using acoustofluidics. By acoustically-assembling cancer cells with low-cost and disposable devices, our method can produce more than 12 000 multicellular aggregates within several minutes and allow us to transfer these aggregates into ultra-low attachment dishes for long-term culture. This method can generate more than 6000 tumor spheroids per operation, and reduce tumor spheroid formation time to one day. Our platform has advantages in forming spheroids with high throughput, short time, and long-term effectiveness, and is easy-to-operation. This acoustofluidic spheroid assembly method provides a simple and efficient way to produce large numbers of uniform-sized spheroids for biomedical applications in translational medicine, pharmaceutical industry and basic life science research.
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Affiliation(s)
- Bin Chen
- Department of Intelligent Systems Engineering, Indiana University, Bloomington, IN 47405, USA.
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200
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Tian Z, Yang S, Huang PH, Wang Z, Zhang P, Gu Y, Bachman H, Chen C, Wu M, Xie Y, Huang TJ. Wave number-spiral acoustic tweezers for dynamic and reconfigurable manipulation of particles and cells. SCIENCE ADVANCES 2019; 5:eaau6062. [PMID: 31172021 PMCID: PMC6544454 DOI: 10.1126/sciadv.aau6062] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 04/18/2019] [Indexed: 05/15/2023]
Abstract
Acoustic tweezers have recently raised great interest across many fields including biology, chemistry, engineering, and medicine, as they can perform contactless, label-free, biocompatible, and precise manipulation of particles and cells. Here, we present wave number-spiral acoustic tweezers, which are capable of dynamically reshaping surface acoustic wave (SAW) wavefields to various pressure distributions to facilitate dynamic and programmable particle/cell manipulation. SAWs propagating in multiple directions can be simultaneously and independently controlled by simply modulating the multitone excitation signals. This allows for dynamic reshaping of SAW wavefields to desired distributions, thus achieving programmable particle/cell manipulation. We experimentally demonstrated the multiple functions of wave number-spiral acoustic tweezers, among which are multiconfiguration patterning; parallel merging; pattern translation, transformation, and rotation; and dynamic translation of single microparticles along complex paths. This wave number-spiral design has the potential to revolutionize future acoustic tweezers development and advance many applications, including microscale assembly, bioprinting, and cell-cell interaction research.
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Affiliation(s)
- Zhenhua Tian
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC 27708, USA
| | - Shujie Yang
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC 27708, USA
| | - Po-Hsun Huang
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC 27708, USA
| | - Zeyu Wang
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC 27708, USA
| | - Peiran Zhang
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC 27708, USA
| | - Yuyang Gu
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC 27708, USA
| | - Hunter Bachman
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC 27708, USA
| | - Chuyi Chen
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC 27708, USA
| | - Mengxi Wu
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC 27708, USA
| | - Yangbo Xie
- Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA
| | - Tony Jun Huang
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC 27708, USA
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