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Lu S, Ma D, Mi X. A High-Throughput Circular Tumor Cell Sorting Chip with Trapezoidal Cross Section. SENSORS (BASEL, SWITZERLAND) 2024; 24:3552. [PMID: 38894343 PMCID: PMC11175239 DOI: 10.3390/s24113552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 05/17/2024] [Accepted: 05/27/2024] [Indexed: 06/21/2024]
Abstract
Circulating tumor cells are typically found in the peripheral blood of patients, offering a crucial pathway for the early diagnosis and prediction of cancer. Traditional methods for early cancer diagnosis are inefficient and inaccurate, making it difficult to isolate tumor cells from a large number of cells. In this paper, a new spiral microfluidic chip with asymmetric cross-section is proposed for rapid, high-throughput, label-free enrichment of CTCs in peripheral blood. A mold of the desired flow channel structure was prepared and inverted to make a trapezoidal cross-section using a micro-nanotechnology process of 3D printing. After a systematic study of how flow rate, channel width, and particle concentration affect the performance of the device, we utilized the device to simulate cell sorting of 6 μm, 15 μm, and 25 μm PS (Polystyrene) particles, and the separation efficiency and separation purity of 25 μm PS particles reached 98.3% and 96.4%. On this basis, we realize the enrichment of a large number of CTCs in diluted whole blood (5 mL). The results show that the separation efficiency of A549 was 88.9% and the separation purity was 96.4% at a high throughput of 1400 μL/min. In conclusion, we believe that the developed method is relevant for efficient recovery from whole blood and beneficial for future automated clinical analysis.
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Affiliation(s)
- Shijie Lu
- School of Microelectronics, Shanghai University, 20 Chengzhong Road, Shanghai 201899, China;
- National Key Laboratory of Materials for Integrated Circuits, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, Shanghai 200050, China;
| | - Ding Ma
- National Key Laboratory of Materials for Integrated Circuits, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, Shanghai 200050, China;
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xianqiang Mi
- School of Microelectronics, Shanghai University, 20 Chengzhong Road, Shanghai 201899, China;
- National Key Laboratory of Materials for Integrated Circuits, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, Shanghai 200050, China;
- University of Chinese Academy of Sciences, Beijing 100049, China
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2
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Zhang T, Di Carlo D, Lim CT, Zhou T, Tian G, Tang T, Shen AQ, Li W, Li M, Yang Y, Goda K, Yan R, Lei C, Hosokawa Y, Yalikun Y. Passive microfluidic devices for cell separation. Biotechnol Adv 2024; 71:108317. [PMID: 38220118 DOI: 10.1016/j.biotechadv.2024.108317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 12/27/2023] [Accepted: 01/06/2024] [Indexed: 01/16/2024]
Abstract
The separation of specific cell populations is instrumental in gaining insights into cellular processes, elucidating disease mechanisms, and advancing applications in tissue engineering, regenerative medicine, diagnostics, and cell therapies. Microfluidic methods for cell separation have propelled the field forward, benefitting from miniaturization, advanced fabrication technologies, a profound understanding of fluid dynamics governing particle separation mechanisms, and a surge in interdisciplinary investigations focused on diverse applications. Cell separation methodologies can be categorized according to their underlying separation mechanisms. Passive microfluidic separation systems rely on channel structures and fluidic rheology, obviating the necessity for external force fields to facilitate label-free cell separation. These passive approaches offer a compelling combination of cost-effectiveness and scalability when compared to active methods that depend on external fields to manipulate cells. This review delves into the extensive utilization of passive microfluidic techniques for cell separation, encompassing various strategies such as filtration, sedimentation, adhesion-based techniques, pinched flow fractionation (PFF), deterministic lateral displacement (DLD), inertial microfluidics, hydrophoresis, viscoelastic microfluidics, and hybrid microfluidics. Besides, the review provides an in-depth discussion concerning cell types, separation markers, and the commercialization of these technologies. Subsequently, it outlines the current challenges faced in the field and presents a forward-looking perspective on potential future developments. This work hopes to aid in facilitating the dissemination of knowledge in cell separation, guiding future research, and informing practical applications across diverse scientific disciplines.
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Affiliation(s)
- Tianlong Zhang
- College of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, China
| | - Dino Di Carlo
- Department of Bioengineering, University of California, Los Angeles, CA 90095, USA
| | - Chwee Teck Lim
- Department of Biomedical Engineering, National University of Singapore, Singapore 117583, Singapore
| | - Tianyuan Zhou
- College of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, China
| | - Guizhong Tian
- College of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, China.
| | - Tao Tang
- Department of Biomedical Engineering, National University of Singapore, Singapore 117583, Singapore
| | - Amy Q Shen
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate University, Onna-son, Okinawa 904-0495, Japan
| | - Weihua Li
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Ming Li
- School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Yang Yang
- Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya, Hainan 572000, China
| | - Keisuke Goda
- Department of Bioengineering, University of California, Los Angeles, CA 90095, USA; Department of Chemistry, University of Tokyo, Tokyo 113-0033, Japan; The Institute of Technological Sciences, Wuhan University, Wuhan 430072, China
| | - Ruopeng Yan
- The Institute of Technological Sciences, Wuhan University, Wuhan 430072, China
| | - Cheng Lei
- The Institute of Technological Sciences, Wuhan University, Wuhan 430072, China
| | - Yoichiroh Hosokawa
- Division of Materials Science, Nara Institute of Science and Technology, Nara 630-0192, Japan
| | - Yaxiaer Yalikun
- Division of Materials Science, Nara Institute of Science and Technology, Nara 630-0192, Japan.
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3
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Ding L, Oh S, Shrestha J, Lam A, Wang Y, Radfar P, Warkiani ME. Scaling up stem cell production: harnessing the potential of microfluidic devices. Biotechnol Adv 2023; 69:108271. [PMID: 37844769 DOI: 10.1016/j.biotechadv.2023.108271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 10/08/2023] [Accepted: 10/13/2023] [Indexed: 10/18/2023]
Abstract
Stem cells are specialised cells characterised by their unique ability to both self-renew and transform into a wide array of specialised cell types. The widespread interest in stem cells for regenerative medicine and cultivated meat has led to a significant demand for these cells in both research and practical applications. Despite the growing need for stem cell manufacturing, the industry faces significant obstacles, including high costs for equipment and maintenance, complicated operation, and low product quality and yield. Microfluidic technology presents a promising solution to the abovementioned challenges. As an innovative approach for manipulating liquids and cells within microchannels, microfluidics offers a plethora of advantages at an industrial scale. These benefits encompass low setup costs, ease of operation and multiplexing, minimal energy consumption, and the added advantage of being labour-free. This review presents a thorough examination of the prominent microfluidic technologies employed in stem cell research and explores their promising applications in the burgeoning stem cell industry. It thoroughly examines how microfluidics can enhance cell harvesting from tissue samples, facilitate mixing and cryopreservation, streamline microcarrier production, and efficiently conduct cell separation, purification, washing, and final cell formulation post-culture.
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Affiliation(s)
- Lin Ding
- Smart MCs Pty Ltd, Ultimo, Sydney, 2007, Australia.
| | - Steve Oh
- Stem Cell Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Singapore, 138668, Singapore
| | - Jesus Shrestha
- School of Biomedical Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Alan Lam
- Stem Cell Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Singapore, 138668, Singapore
| | - Yaqing Wang
- School of Biomedical Engineering, University of Science and Technology of China, Hefei 230026, China; Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou 215123, China
| | - Payar Radfar
- Smart MCs Pty Ltd, Ultimo, Sydney, 2007, Australia
| | - Majid Ebrahimi Warkiani
- School of Biomedical Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia..
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4
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Surappa S, Multani P, Parlatan U, Sinawang PD, Kaifi J, Akin D, Demirci U. Integrated "lab-on-a-chip" microfluidic systems for isolation, enrichment, and analysis of cancer biomarkers. LAB ON A CHIP 2023; 23:2942-2958. [PMID: 37314731 PMCID: PMC10834032 DOI: 10.1039/d2lc01076c] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The liquid biopsy has garnered considerable attention as a complementary clinical tool for the early detection, molecular characterization and monitoring of cancer over the past decade. In contrast to traditional solid biopsy techniques, liquid biopsy offers a less invasive and safer alternative for routine cancer screening. Recent advances in microfluidic technologies have enabled handling of liquid biopsy-derived biomarkers with high sensitivity, throughput, and convenience. The integration of these multi-functional microfluidic technologies into a 'lab-on-a-chip' offers a powerful solution for processing and analyzing samples on a single platform, thereby reducing the complexity, bio-analyte loss and cross-contamination associated with multiple handling and transfer steps in more conventional benchtop workflows. This review critically addresses recent developments in integrated microfluidic technologies for cancer detection, highlighting isolation, enrichment, and analysis strategies for three important sub-types of cancer biomarkers: circulating tumor cells, circulating tumor DNA and exosomes. We first discuss the unique characteristics and advantages of the various lab-on-a-chip technologies developed to operate on each biomarker subtype. This is then followed by a discussion on the challenges and opportunities in the field of integrated systems for cancer detection. Ultimately, integrated microfluidic platforms form the core of a new class of point-of-care diagnostic tools by virtue of their ease-of-operation, portability and high sensitivity. Widespread availability of such tools could potentially result in more frequent and convenient screening for early signs of cancer at clinical labs or primary care offices.
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Affiliation(s)
- Sushruta Surappa
- Canary Center at Stanford for Cancer Early Detection, Bio-Acoustic MEMS in Medicine (BAMM) Lab, Department of Radiology, School of Medicine, Stanford University, Palo Alto, CA 94304, USA.
| | - Priyanka Multani
- Canary Center at Stanford for Cancer Early Detection, Bio-Acoustic MEMS in Medicine (BAMM) Lab, Department of Radiology, School of Medicine, Stanford University, Palo Alto, CA 94304, USA.
| | - Ugur Parlatan
- Canary Center at Stanford for Cancer Early Detection, Bio-Acoustic MEMS in Medicine (BAMM) Lab, Department of Radiology, School of Medicine, Stanford University, Palo Alto, CA 94304, USA.
| | - Prima Dewi Sinawang
- Canary Center at Stanford for Cancer Early Detection, Bio-Acoustic MEMS in Medicine (BAMM) Lab, Department of Radiology, School of Medicine, Stanford University, Palo Alto, CA 94304, USA.
- Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA
| | - Jussuf Kaifi
- Department of Surgery, School of Medicine, University of Missouri, Columbia, MO 65212, USA
- Harry S. Truman Memorial Veterans' Hospital, Columbia, MO 65201, USA
| | - Demir Akin
- Canary Center at Stanford for Cancer Early Detection, Bio-Acoustic MEMS in Medicine (BAMM) Lab, Department of Radiology, School of Medicine, Stanford University, Palo Alto, CA 94304, USA.
- Center for Cancer Nanotechnology Excellence for Translational Diagnostics (CCNE-TD), School of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Utkan Demirci
- Canary Center at Stanford for Cancer Early Detection, Bio-Acoustic MEMS in Medicine (BAMM) Lab, Department of Radiology, School of Medicine, Stanford University, Palo Alto, CA 94304, USA.
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5
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Salomon R, Razavi Bazaz S, Li W, Gallego-Ortega D, Jin D, Warkiani ME. A Method for Rapid, Quantitative Evaluation of Particle Sorting in Microfluidics Using Basic Cytometry Equipment. MICROMACHINES 2023; 14:751. [PMID: 37420984 DOI: 10.3390/mi14040751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/27/2023] [Accepted: 03/27/2023] [Indexed: 07/09/2023]
Abstract
This paper describes, in detail, a method that uses flow cytometry to quantitatively characterise the performance of continuous-flow microfluidic devices designed to separate particles. Whilst simple, this approach overcomes many of the issues with the current commonly utilised methods (high-speed fluorescent imaging, or cell counting via either a hemocytometer or a cell counter), as it can accurately assess device performance even in complex, high concentration mixtures in a way that was previously not possible. Uniquely, this approach takes advantage of pulse processing in flow cytometry to allow quantitation of cell separation efficiencies and resulting sample purities on both single cells as well as cell clusters (such as circulating tumour cell (CTC) clusters). Furthermore, it can readily be combined with cell surface phenotyping to measure separation efficiencies and purities in complex cell mixtures. This method will facilitate the rapid development of a raft of continuous flow microfluidic devices, will be helpful in testing novel separation devices for biologically relevant clusters of cells such as CTC clusters, and will provide a quantitative assessment of device performance in complex samples, which was previously impossible.
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Affiliation(s)
- Robert Salomon
- Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia
- Children's Cancer Institute, Lowy Cancer Centre, UNSW Sydney, Kensington, NSW 2052, Australia
| | - Sajad Razavi Bazaz
- Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia
- Children's Cancer Institute, Lowy Cancer Centre, UNSW Sydney, Kensington, NSW 2052, Australia
- School of Biomedical Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Wenyan Li
- Children's Cancer Institute, Lowy Cancer Centre, UNSW Sydney, Kensington, NSW 2052, Australia
| | - David Gallego-Ortega
- School of Biomedical Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Dayong Jin
- Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Majid Ebrahimi Warkiani
- Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia
- School of Biomedical Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
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6
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Akbarnataj K, Maleki S, Rezaeian M, Haki M, Shamloo A. Novel size-based design of spiral microfluidic devices with elliptic configurations and trapezoidal cross-section for ultra-fast isolation of circulating tumor cells. Talanta 2023; 254:124125. [PMID: 36462283 DOI: 10.1016/j.talanta.2022.124125] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/12/2022] [Accepted: 11/21/2022] [Indexed: 11/27/2022]
Abstract
Investigation and analysis of circulating tumor cells (CTCs) have been valuable resources for detecting and diagnosing cancer in its early stages. Recently, enumeration and separation of CTCs via microfluidic devices have attracted significant attention due to their low cost and easy setup. In this study, novel microfluidic devices based on size-dependent cell-sorting with a trapezoidal cross-section and elliptic spiral configurations were proposed to reach label-free, ultra-fast CTCs enrichment. Firstly, the possibility and quality of separation in the devices were evaluated via a numerical simulation. Subsequently, these devices were fabricated to investigate the effects of the altering curvature and the trapezoidal cross-section on the isolation of CTCs from the peripheral blood sample at varying flow rates ranging from 0.5 mL/min to 3.5 mL/min. The experimental results indicated that the flow rate of 2.5 mL/min provided the optimal separation efficiency in the proposed devices, which was in fine agreement with the numerical analysis results. In this experiment, the purity values of CTCs between 88% and 90% were achieved, which is an indicator of the high capability of the proposed devices for the isolation and enrichment of CTCs. This strategy is hoped to overcome the limitations of classical affinity-based CTC separation approaches in the future.
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Affiliation(s)
- Kazem Akbarnataj
- Nano-Bioengineering Lab, School of Mechanical Engineering, Sharif University of Technology, Tehran, 11365-11155, Iran; Department of Mechanical Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran
| | - Sasan Maleki
- Nano-Bioengineering Lab, School of Mechanical Engineering, Sharif University of Technology, Tehran, 11365-11155, Iran; Stem Cell and Regenerative Medicine Institute, Sharif University of Technology, Tehran, 11155-9161, Iran
| | - Masoud Rezaeian
- Nano-Bioengineering Lab, School of Mechanical Engineering, Sharif University of Technology, Tehran, 11365-11155, Iran; Stem Cell and Regenerative Medicine Institute, Sharif University of Technology, Tehran, 11155-9161, Iran
| | - Mohammad Haki
- Nano-Bioengineering Lab, School of Mechanical Engineering, Sharif University of Technology, Tehran, 11365-11155, Iran; Stem Cell and Regenerative Medicine Institute, Sharif University of Technology, Tehran, 11155-9161, Iran
| | - Amir Shamloo
- Nano-Bioengineering Lab, School of Mechanical Engineering, Sharif University of Technology, Tehran, 11365-11155, Iran; Stem Cell and Regenerative Medicine Institute, Sharif University of Technology, Tehran, 11155-9161, Iran.
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7
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Cha H, Fallahi H, Dai Y, Yuan D, An H, Nguyen NT, Zhang J. Multiphysics microfluidics for cell manipulation and separation: a review. LAB ON A CHIP 2022; 22:423-444. [PMID: 35048916 DOI: 10.1039/d1lc00869b] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Multiphysics microfluidics, which combines multiple functional physical processes in a microfluidics platform, is an emerging research area that has attracted increasing interest for diverse biomedical applications. Multiphysics microfluidics is expected to overcome the limitations of individual physical phenomena through combining their advantages. Furthermore, multiphysics microfluidics is superior for cell manipulation due to its high precision, better sensitivity, real-time tunability, and multi-target sorting capabilities. These exciting features motivate us to review this state-of-the-art field and reassess the feasibility of coupling multiple physical processes. To confine the scope of this paper, we mainly focus on five common forces in microfluidics: inertial lift, elastic, dielectrophoresis (DEP), magnetophoresis (MP), and acoustic forces. This review first explains the working mechanisms of single physical phenomena. Next, we classify multiphysics techniques in terms of cascaded connections and physical coupling, and we elaborate on combinations of designs and working mechanisms in systems reported in the literature to date. Finally, we discuss the possibility of combining multiple physical processes and associated design schemes and propose several promising future directions.
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Affiliation(s)
- Haotian Cha
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland 4111, Australia.
| | - Hedieh Fallahi
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland 4111, Australia.
| | - Yuchen Dai
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland 4111, Australia.
| | - Dan Yuan
- Centre for Regional and Rural Futures, Deakin University, Geelong, Victoria 3216, Australia
| | - Hongjie An
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland 4111, Australia.
| | - Nam-Trung Nguyen
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland 4111, Australia.
| | - Jun Zhang
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland 4111, Australia.
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8
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Bordhan P, Razavi Bazaz S, Jin D, Ebrahimi Warkiani M. Advances and enabling technologies for phase-specific cell cycle synchronisation. LAB ON A CHIP 2022; 22:445-462. [PMID: 35076046 DOI: 10.1039/d1lc00724f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Cell cycle synchronisation is the process of isolating cell populations at specific phases of the cell cycle from heterogeneous, asynchronous cell cultures. The process has important implications in targeted gene-editing and drug efficacy of cells and in studying cell cycle events and regulatory mechanisms involved in the cell cycle progression of multiple cell species. Ideally, cell cycle synchrony techniques should be applicable for all cell types, maintain synchrony across multiple cell cycle events, maintain cell viability and be robust against metabolic and physiological perturbations. In this review, we categorize cell cycle synchronisation approaches and discuss their operational principles and performance efficiencies. We highlight the advances and technological development trends from conventional methods to the more recent microfluidics-based systems. Furthermore, we discuss the opportunities and challenges for implementing high throughput cell synchronisation and provide future perspectives on synchronisation platforms, specifically hybrid cell synchrony modalities, to allow the highest level of phase-specific synchrony possible with minimal alterations in diverse types of cell cultures.
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Affiliation(s)
- Pritam Bordhan
- School of Biomedical Engineering, University of Technology Sydney, Sydney, New South Wales 2007, Australia.
- Institute for Biomedical Materials & Devices, Faculty of Science, University of Technology Sydney, New South Wales 2007, Australia
| | - Sajad Razavi Bazaz
- School of Biomedical Engineering, University of Technology Sydney, Sydney, New South Wales 2007, Australia.
- Institute for Biomedical Materials & Devices, Faculty of Science, University of Technology Sydney, New South Wales 2007, Australia
| | - Dayong Jin
- Institute for Biomedical Materials & Devices, Faculty of Science, University of Technology Sydney, New South Wales 2007, Australia
| | - Majid Ebrahimi Warkiani
- School of Biomedical Engineering, University of Technology Sydney, Sydney, New South Wales 2007, Australia.
- Institute for Biomedical Materials & Devices, Faculty of Science, University of Technology Sydney, New South Wales 2007, Australia
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3D Printed Microfluidic Spiral Separation Device for Continuous, Pulsation-Free and Controllable CHO Cell Retention. MICROMACHINES 2021; 12:mi12091060. [PMID: 34577708 PMCID: PMC8470376 DOI: 10.3390/mi12091060] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/20/2021] [Accepted: 08/27/2021] [Indexed: 11/16/2022]
Abstract
The development of continuous bioprocesses-which require cell retention systems in order to enable longer cultivation durations-is a primary focus in the field of modern process development. The flow environment of microfluidic systems enables the granular manipulation of particles (to allow for greater focusing in specific channel regions), which in turn facilitates the development of small continuous cell separation systems. However, previously published systems did not allow for separation control. Additionally, the focusing effect of these systems requires constant, pulsation-free flow for optimal operation, which cannot be achieved using ordinary peristaltic pumps. As described in this paper, a 3D printed cell separation spiral for CHO-K1 (Chinese hamster ovary) cells was developed and evaluated optically and with cell experiments. It demonstrated a high separation efficiency of over 95% at up to 20 × 106 cells mL-1. Control over inlet and outlet flow rates allowed the operator to adjust the separation efficiency of the device while in use-thereby enabling fine control over cell concentration in the attached bioreactors. In addition, miniaturized 3D printed buffer devices were developed that can be easily attached directly to the separation unit for usage with peristaltic pumps while simultaneously almost eradicating pump pulsations. These custom pulsation dampeners were closely integrated with the separator spiral lowering the overall dead volume of the system. The entire device can be flexibly connected directly to bioreactors, allowing continuous, pulsation-free cell retention and process operation.
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10
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Dean migration of unfocused micron sized particles in low aspect ratio spiral microchannels. Biomed Microdevices 2021; 23:40. [PMID: 34309731 DOI: 10.1007/s10544-021-00575-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/10/2021] [Indexed: 10/20/2022]
Abstract
We present an analysis of the microfluidic Dean migration of 2.5 µm particles, which do not meet focus criterion, in tall and low aspect ratio microchannels. We demonstrate the use of such low aspect ratio and tall spirals (h > 50 µm) for isolating high concentration (> 106 particles or cells/mL) micron sized particles without an initial off-chip dilution step. We specifically show the need for a sheath fluid for isolation and systematically analyze the particle stream profile (i.e. thickness and distance from the channel wall) as a function of downstream channel length and curvature ratio, with changes in the fluid velocity and the flow rate ratio of particles to sheath fluid (FRR). We also show that the width of the particle stream can control the particle migration and that a threshold stream width and Dean drag is necessary to initiate the particle stream migration from the channel wall. We then propose a design guide based on the selection of optimum curvatures, flow velocities and the FRRs required for achieving a narrow particle stream through a particular outlet. Finally, we use the design guide to demonstrate the isolation of bacteria from bladder epithelial cells.
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11
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Tabatabaei SA, Zabetian Targhi M. Design and experimental investigation of a novel spiral microfluidic chip to separate wide size range of micro-particles aimed at cell separation. Proc Inst Mech Eng H 2021; 235:1315-1328. [PMID: 34218740 DOI: 10.1177/09544119211029753] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Isolation of microparticles and biological cells on microfluidic chips has received considerable attention due to their applications in numerous areas such as medical and engineering fields. Microparticles separation is of great importance in bioassays due to the need for smaller sample and device size and lower manufacturing costs. In this study, we first explain the concepts of separation and microfluidic science along with their applications in the medical sciences, and then, a conceptual design of a novel inertial microfluidic system is proposed and analyzed. The PDMS spiral microfluidic device was fabricated, and its effects on the separation of particles with sizes similar to biological particles were experimentally analyzed. This separation technique can be used to separate cancer cells from the normal ones in the blood samples. These components required for testing were selected, assembled, and finally, a very affordable microfluidic kit was provided. Different experiments were designed, and the results were analyzed using appropriate software and methods. Separator system tests with polydisperse hollow glass particles (diameter 2-20 µm), and monodisperse Polystyrene particles (diameter 5 & 15 µm), and the results exhibit an acceptable chip performance with 86% of efficiency for both monodisperse particles and polydisperse particles. The microchannel collects particles with an average diameter of 15.8, 9.4, and 5.9 μm at the proposed reservoirs. This chip can be integrated into a more extensive point-of-care diagnostic system to test blood samples.
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12
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Public-Health-Driven Microfluidic Technologies: From Separation to Detection. MICROMACHINES 2021; 12:mi12040391. [PMID: 33918189 PMCID: PMC8066776 DOI: 10.3390/mi12040391] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/25/2021] [Accepted: 03/26/2021] [Indexed: 02/07/2023]
Abstract
Separation and detection are ubiquitous in our daily life and they are two of the most important steps toward practical biomedical diagnostics and industrial applications. A deep understanding of working principles and examples of separation and detection enables a plethora of applications from blood test and air/water quality monitoring to food safety and biosecurity; none of which are irrelevant to public health. Microfluidics can separate and detect various particles/aerosols as well as cells/viruses in a cost-effective and easy-to-operate manner. There are a number of papers reviewing microfluidic separation and detection, but to the best of our knowledge, the two topics are normally reviewed separately. In fact, these two themes are closely related with each other from the perspectives of public health: understanding separation or sorting technique will lead to the development of new detection methods, thereby providing new paths to guide the separation routes. Therefore, the purpose of this review paper is two-fold: reporting the latest developments in the application of microfluidics for separation and outlining the emerging research in microfluidic detection. The dominating microfluidics-based passive separation methods and detection methods are discussed, along with the future perspectives and challenges being discussed. Our work inspires novel development of separation and detection methods for the benefits of public health.
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13
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Belotti Y, Lim CT. Microfluidics for Liquid Biopsies: Recent Advances, Current Challenges, and Future Directions. Anal Chem 2021; 93:4727-4738. [DOI: 10.1021/acs.analchem.1c00410] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yuri Belotti
- Institute for Health Innovation and Technology, National University of Singapore, 117599 Singapore
| | - Chwee Teck Lim
- Institute for Health Innovation and Technology, National University of Singapore, 117599 Singapore
- Department of Biomedical Engineering, National University of Singapore, 117583 Singapore
- Mechanobiology Institute, National University of Singapore, 117411 Singapore
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14
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Honrado C, Michel N, Moore JH, Salahi A, Porterfield V, McConnell MJ, Swami NS. Label-Free Quantification of Cell Cycle Synchronicity of Human Neural Progenitor Cells Based on Electrophysiology Phenotypes. ACS Sens 2021; 6:156-165. [PMID: 33325234 DOI: 10.1021/acssensors.0c02022] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The ability to coax human-induced pluripotent stem cells (hiPSCs) into human neural progenitor cells (hNPCs) can lead to novel drug discovery and transplant therapy platforms for neurological diseases. Since hNPCs can form organoids that mimic brain development, there is emerging interest in their label-free characterization for controlling cell composition to optimize organoid formation in three-dimensional (3D) cultures. However, this requires the ability to quantify hNPCs in heterogeneous samples with subpopulations of similar phenotype. Using high-throughput (>6000 cells per condition), single-cell impedance cytometry, we present the utilization of electrophysiology for quantification of hNPC subpopulations that are altered in cell cycle synchronicity by camptothecin (CPT) exposure. Electrophysiology phenotypes are determined from impedance magnitude and phase metrics for distinguishing each cell cycle phase, as validated by flow cytometry, for a wide range of subpopulation proportions. Using multishell dielectric models for each cell cycle phase, electrophysiology alterations with CPT dose could be predicted. This label-free detection strategy can prevent loss of cell viability to speed the optimization of cellular compositions for organoid development.
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Affiliation(s)
- Carlos Honrado
- Electrical & Computer Engineering, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Nadine Michel
- Biochemistry & Molecular Genetics, School of Medicine, University of Virginia, Charlottesville, Virginia 22904, United States
| | - John H. Moore
- Electrical & Computer Engineering, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Armita Salahi
- Electrical & Computer Engineering, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Veronica Porterfield
- Department of Cell Biology, School of Medicine, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Michael J. McConnell
- Biochemistry & Molecular Genetics, School of Medicine, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Nathan S. Swami
- Electrical & Computer Engineering, University of Virginia, Charlottesville, Virginia 22904, United States
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15
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Shen S, Gao M, Zhang F, Niu Y. Numerical Study of Multivortex Regulation in Curved Microchannels with Ultra-Low-Aspect-Ratio. MICROMACHINES 2021; 12:mi12010081. [PMID: 33466925 PMCID: PMC7830345 DOI: 10.3390/mi12010081] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 01/06/2021] [Accepted: 01/10/2021] [Indexed: 12/17/2022]
Abstract
The field of inertial microfluidics has been significantly advanced in terms of application to fluid manipulation for biological analysis, materials synthesis, and chemical process control. Because of their superior benefits such as high-throughput, simplicity, and accurate manipulation, inertial microfluidics designs incorporating channel geometries generating Dean vortexes and helical vortexes have been studied extensively. However, existing technologies have not been studied by designing low-aspect-ratio microchannels to produce multi-vortexes. In this study, an inertial microfluidic device was developed, allowing the generation and regulation of the Dean vortex and helical vortex through the introduction of micro-obstacles in a semicircular microchannel with ultra-low aspect ratio. Multi-vortex formations in the vertical and horizontal planes of four dimension-confined curved channels were analyzed at different flow rates. Moreover, the regulation mechanisms of the multi-vortex were studied systematically by altering the micro-obstacle length and channel height. Through numerical simulation, the regulation of dimensional confinement in the microchannel is verified to induce the Dean vortex and helical vortex with different magnitudes and distributions. The results provide insights into the geometry-induced secondary flow mechanism, which can inspire simple and easily built planar 2D microchannel systems with low-aspect-ratio design with application in fluid manipulations for chemical engineering and bioengineering.
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Affiliation(s)
- Shaofei Shen
- Correspondence: (S.S.); (Y.N.); Tel./Fax: +86-354-6287205 (S.S. & Y.N.)
| | | | | | - Yanbing Niu
- Correspondence: (S.S.); (Y.N.); Tel./Fax: +86-354-6287205 (S.S. & Y.N.)
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16
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Continuous microfluidic 3D focusing enabling microflow cytometry for single-cell analysis. Talanta 2021; 221:121401. [DOI: 10.1016/j.talanta.2020.121401] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 07/04/2020] [Accepted: 07/08/2020] [Indexed: 02/06/2023]
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17
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Lafzi A, Raffiee AH, Dabiri S. Inertial migration of a deformable capsule in an oscillatory flow in a microchannel. Phys Rev E 2020; 102:063110. [PMID: 33466115 DOI: 10.1103/physreve.102.063110] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 12/08/2020] [Indexed: 12/19/2022]
Abstract
Dynamics of a deformable capsule in an oscillatory flow of a Newtonian fluid in a microchannel has been studied numerically. The effects of oscillation frequency, capsule deformability, and channel flow rate have been explored by simulating the capsule within a microchannel. In addition, the simulation captures the effect of the type of imposed pressure oscillations on the migration pattern of the capsule. An oscillatory channel flow enables the focusing of extremely small biological particles by eliminating the need to design impractically long channels. The presented results show that the equilibrium position of the capsule changes not only by the addition of an oscillatory component to the pressure gradient but it also is influenced by the capsule deformability and channel flow rate. Furthermore, it has been shown that the amplitude of oscillation of capsules decreases as the channel flow rate and the rigidity of the capsule increases.
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Affiliation(s)
- Ali Lafzi
- Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, Indiana 47907, USA
| | - Amir Hossein Raffiee
- School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, USA
| | - Sadegh Dabiri
- Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, Indiana 47907, USA.,School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, USA
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18
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Zhou T, Ji X, Shi L, Hu N, Li T. Dielectrophoretic interactions of two rod-shaped deformable particles under DC electric field. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125493] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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19
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Palumbo J, Navi M, Tsai SSH, Spelt JK, Papini M. Lab on a rod: Size-based particle separation and sorting in a helical channel. BIOMICROFLUIDICS 2020; 14:064104. [PMID: 33224403 PMCID: PMC7661098 DOI: 10.1063/5.0030917] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 10/29/2020] [Indexed: 06/11/2023]
Abstract
Size-based particle separation using inertial microfluidics in spiral channels has been well studied over the past decade. Though these devices can effectively separate particles, they require a relatively large device footprint with a typical outer channel radius of approximately 15 mm. In this paper, we describe a microfluidic device with a footprint diameter of 5.5 mm, containing a helical channel capable of inertial particle separation fabricated using abrasive jet micromachining. The separation of particles in several channel geometries was studied using wide-field fluorescence microscopy. A maximum separation efficiency of approximately 90% was achieved at a flow rate of 1.5 ml/min with a purity of approximately 95% at the outlet, where large particles were collected. An accompanying computational fluid dynamics model was developed to allow researchers to quickly assess the separation capability of their helical or spiral devices.
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Affiliation(s)
- Joshua Palumbo
- Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario M5S 3G8, Canada
| | | | | | - Jan K. Spelt
- Authors to whom correspondence should be addressed:, Tel.: +1 416 978 5435, Fax: +1 416 978 7753 and , Tel.: +1 416 979 5000 ext. 7655, Fax: +1 416 979 5265
| | - Marcello Papini
- Authors to whom correspondence should be addressed:, Tel.: +1 416 978 5435, Fax: +1 416 978 7753 and , Tel.: +1 416 979 5000 ext. 7655, Fax: +1 416 979 5265
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20
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Tang W, Zhu S, Jiang D, Zhu L, Yang J, Xiang N. Channel innovations for inertial microfluidics. LAB ON A CHIP 2020; 20:3485-3502. [PMID: 32910129 DOI: 10.1039/d0lc00714e] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Inertial microfluidics has gained significant attention since first being proposed in 2007 owing to the advantages of simplicity, high throughput, precise manipulation, and freedom from an external field. Superior performance in particle focusing, filtering, concentrating, and separating has been demonstrated. As a passive technology, inertial microfluidics technology relies on the unconventional use of fluid inertia in an intermediate Reynolds number range to induce inertial migration and secondary flow, which depend directly on the channel structure, leading to particle migration to the lateral equilibrium position or trapping in a specific cavity. With the advances in micromachining technology, many channel structures have been designed and fabricated in the past decade to explore the fundamentals and applications of inertial microfluidics. However, the channel innovations for inertial microfluidics have not been discussed comprehensively. In this review, the inertial particle manipulations and underlying physics in conventional channels, including straight, spiral, sinusoidal, and expansion-contraction channels, are briefly described. Then, recent innovations in channel structure for inertial microfluidics, especially channel pattern modification and unconventional cross-sectional shape, are reviewed. Finally, the prospects for future channel innovations in inertial microfluidic chips are also discussed. The purpose of this review is to provide guidance for the continued study of innovative channel designs to improve further the accuracy and throughput of inertial microfluidics.
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Affiliation(s)
- Wenlai Tang
- School of Electrical and Automation Engineering, Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing, Nanjing Normal University, Nanjing, 210023, China.
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21
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Olm F, Lim HC, Schallmoser K, Strunk D, Laurell T, Scheding S. Acoustophoresis Enables the Label‐Free Separation of Functionally Different Subsets of Cultured Bone Marrow Stromal Cells. Cytometry A 2020; 99:476-487. [DOI: 10.1002/cyto.a.24171] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 06/06/2020] [Accepted: 06/11/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Franziska Olm
- Department of Laboratory Medicine, Lund Stem Cell Center and Molecular Hematology Lund University Lund Sweden
| | - Hooi Ching Lim
- Department of Laboratory Medicine, Lund Stem Cell Center and Molecular Hematology Lund University Lund Sweden
| | - Katharina Schallmoser
- Department of Transfusion Medicine, Spinal Cord Injury and Tissue Regeneration Center Paracelsus Medical University Salzburg Austria
| | - Dirk Strunk
- Department of Experimental and Clinical Cell Therapy, Spinal Cord Injury and Tissue Regeneration Center Paracelsus Medical University Salzburg Austria
| | - Thomas Laurell
- Department of Biomedical Engineering Lund University Lund Sweden
| | - Stefan Scheding
- Department of Laboratory Medicine, Lund Stem Cell Center and Molecular Hematology Lund University Lund Sweden
- Department of Haematology Skåne University Hospital Lund Sweden
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22
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Caffiyar MY, Lim KP, Basha IHK, Hamid NH, Cheong SC, Ho ETW. Label-Free, High-Throughput Assay of Human Dendritic Cells from Whole-Blood Samples with Microfluidic Inertial Separation Suitable for Resource-Limited Manufacturing. MICROMACHINES 2020; 11:mi11050514. [PMID: 32438709 PMCID: PMC7281724 DOI: 10.3390/mi11050514] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 03/31/2020] [Accepted: 04/05/2020] [Indexed: 02/07/2023]
Abstract
Microfluidics technology has not impacted the delivery and accessibility of point-of-care health services, like diagnosing infectious disease, monitoring health or delivering interventions. Most microfluidics prototypes in academic research are not easy to scale-up with industrial-scale fabrication techniques and cannot be operated without complex manipulations of supporting equipment and additives, such as labels or reagents. We propose a label- and reagent-free inertial spiral microfluidic device to separate red blood, white blood and dendritic cells from blood fluid, for applications in health monitoring and immunotherapy. We demonstrate that using larger channel widths, in the range of 200 to 600 µm, allows separation of cells into multiple focused streams, according to different size ranges, and we utilize a novel technique to collect the closely separated focused cell streams, without constricting the channel. Our contribution is a method to adapt spiral inertial microfluidic designs to separate more than two cell types in the same device, which is robust against clogging, simple to operate and suitable for fabrication and deployment in resource-limited populations. When tested on actual human blood cells, 77% of dendritic cells were separated and 80% of cells remained viable after our assay.
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Affiliation(s)
- Mohamed Yousuff Caffiyar
- Department of Electrical & Electronics Engineering, Universiti Teknologi PETRONAS, Perak 32610, Malaysia; (M.Y.C.); (I.H.K.B.); (N.H.H.)
- Department of Electronics and Communication Engineering, C. Abdul Hakeem College of Engineering and Technology, Melvisharam, Tamil Nadu 632509, India
| | - Kue Peng Lim
- Head and Neck Cancer Research Group, Cancer Research Malaysia, Selangor 47500, Malaysia; (K.P.L.); (S.C.C.)
| | - Ismail Hussain Kamal Basha
- Department of Electrical & Electronics Engineering, Universiti Teknologi PETRONAS, Perak 32610, Malaysia; (M.Y.C.); (I.H.K.B.); (N.H.H.)
| | - Nor Hisham Hamid
- Department of Electrical & Electronics Engineering, Universiti Teknologi PETRONAS, Perak 32610, Malaysia; (M.Y.C.); (I.H.K.B.); (N.H.H.)
| | - Sok Ching Cheong
- Head and Neck Cancer Research Group, Cancer Research Malaysia, Selangor 47500, Malaysia; (K.P.L.); (S.C.C.)
- Department of Oral & Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Eric Tatt Wei Ho
- Department of Electrical & Electronics Engineering, Universiti Teknologi PETRONAS, Perak 32610, Malaysia; (M.Y.C.); (I.H.K.B.); (N.H.H.)
- Correspondence: ; Tel.: +60-5-368-7899
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23
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Differential Sorting of Microparticles Using Spiral Microchannels with Elliptic Configurations. MICROMACHINES 2020; 11:mi11040412. [PMID: 32295138 PMCID: PMC7231368 DOI: 10.3390/mi11040412] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 04/08/2020] [Accepted: 04/09/2020] [Indexed: 12/26/2022]
Abstract
Label-free, size-dependent cell-sorting applications based on inertial focusing phenomena have attracted much interest during the last decade. The separation capability heavily depends on the precision of microparticle focusing. In this study, five-loop spiral microchannels with a height of 90 µm and a width of 500 µm are introduced. Unlike their original spiral counterparts, these channels have elliptic configurations of varying initial aspect ratios, namely major axis to minor axis ratios of 3:2, 11:9, 9:11, and 2:3. Accordingly, the curvature of these configurations increases in a curvilinear manner through the channel. The effects of the alternating curvature and channel Reynolds number on the focusing of fluorescent microparticles with sizes of 10 and 20 µm in the prepared suspensions were investigated. At volumetric flow rates between 0.5 and 3.5 mL/min (allowing separation), each channel was tested to collect samples at the designated outlets. Then, these samples were analyzed by counting the particles. These curved channels were capable of separating 20 and 10 µm particles with total yields up to approximately 95% and 90%, respectively. The results exhibited that the level of enrichment and the focusing behavior of the proposed configurations are promising compared to the existing microfluidic channel configurations.
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24
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Evaluation of Performance and Tunability of a Co-Flow Inertial Microfluidic Device. MICROMACHINES 2020; 11:mi11030287. [PMID: 32164264 PMCID: PMC7142704 DOI: 10.3390/mi11030287] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 02/28/2020] [Accepted: 03/05/2020] [Indexed: 02/08/2023]
Abstract
Microfluidics has gained a lot of attention for biological sample separation and purification methods over recent years. From many active and passive microfluidic techniques, inertial microfluidics offers a simple and efficient method to demonstrate various biological applications. One prevalent limitation of this method is its lack of tunability for different applications once the microfluidic devices are fabricated. In this work, we develop and characterize a co-flow inertial microfluidic device that is tunable in multiple ways for adaptation to different application requirements. In particular, flow rate, flow rate ratio and output resistance ratio are systematically evaluated for flexibility of the cutoff size of the device and modification of the separation performance post-fabrication. Typically, a mixture of single size particles is used to determine cutoff sizes for the outlets, yet this fails to provide accurate prediction for efficiency and purity for a more complex biological sample. Thus, we use particles with continuous size distribution (2–32 μm) for separation demonstration under conditions of various flow rates, flow rate ratios and resistance ratios. We also use A549 cancer cell line with continuous size distribution (12–27 μm) as an added demonstration. Our results indicate inertial microfluidic devices possess the tunability that offers multiple ways to improve device performance for adaptation to different applications even after the devices are prototyped.
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25
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Guzniczak E, Otto O, Whyte G, Chandra T, Robertson NA, Willoughby N, Jimenez M, Bridle H. Purifying stem cell-derived red blood cells: a high-throughput label-free downstream processing strategy based on microfluidic spiral inertial separation and membrane filtration. Biotechnol Bioeng 2020; 117:2032-2045. [PMID: 32100873 PMCID: PMC7383897 DOI: 10.1002/bit.27319] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 02/17/2020] [Accepted: 02/24/2020] [Indexed: 02/06/2023]
Abstract
Cell-based therapeutics, such as in vitro manufactured red blood cells (mRBCs), are different to traditional biopharmaceutical products (the final product being the cells themselves as opposed to biological molecules such as proteins) and that presents a challenge of developing new robust and economically feasible manufacturing processes, especially for sample purification. Current purification technologies have limited throughput, rely on expensive fluorescent or magnetic immunolabeling with a significant (up to 70%) cell loss and quality impairment. To address this challenge, previously characterized mechanical properties of umbilical cord blood CD34+ cells undergoing in vitro erythropoiesis were used to develop an mRBC purification strategy. The approach consists of two main stages: (a) a microfluidic separation using inertial focusing for deformability-based sorting of enucleated cells (mRBC) from nuclei and nucleated cells resulting in 70% purity and (b) membrane filtration to enhance the purity to 99%. Herein, we propose a new route for high-throughput (processing millions of cells/min and mls of medium/min) purification process for mRBC, leading to high mRBC purity while maintaining cell integrity and no alterations in their global gene expression profile. Further adaption of this separation approach offers a potential route for processing of a wide range of cellular products.
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Affiliation(s)
- Ewa Guzniczak
- Department of Biological Chemistry, Biophysics and Bioengineering Edinburgh Campus, School of Engineering and Physical Science, Heriot-Watt University, Edinburgh, Scotland
| | - Oliver Otto
- Centre for Innovation Competence - Humoral Immune Reactions in Cardiovascular Diseases, University of Greifswald, Greifswald, Germany.,Deutsches Zentrum für Herz-Kreislaufforschung, Partner Site Greifswald, Greifswald, Germany
| | - Graeme Whyte
- Department of Biological Chemistry, Biophysics and Bioengineering Edinburgh Campus, School of Engineering and Physical Science, Heriot-Watt University, Edinburgh, Scotland
| | - Tamir Chandra
- MRC Human Genetics Unit, MRC Institute of Genetics & Molecular Medicine, The University of Edinburgh, Western General Hospital, Edinburgh, Scotland
| | - Neil A Robertson
- MRC Human Genetics Unit, MRC Institute of Genetics & Molecular Medicine, The University of Edinburgh, Western General Hospital, Edinburgh, Scotland
| | - Nik Willoughby
- Department of Biological Chemistry, Biophysics and Bioengineering Edinburgh Campus, School of Engineering and Physical Science, Heriot-Watt University, Edinburgh, Scotland
| | - Melanie Jimenez
- Biomedical Engineering Division, James Watt School of Engineering, University of Glasgow, Glasgow, Scotland
| | - Helen Bridle
- Department of Biological Chemistry, Biophysics and Bioengineering Edinburgh Campus, School of Engineering and Physical Science, Heriot-Watt University, Edinburgh, Scotland
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26
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Zhou Y, Ma Z, Ai Y. Dynamically tunable elasto-inertial particle focusing and sorting in microfluidics. LAB ON A CHIP 2020; 20:568-581. [PMID: 31894813 DOI: 10.1039/c9lc01071h] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Inertial particle separation using passive hydrodynamic forces has attracted great attention in the microfluidics community because of its operation simplicity and high throughput sample processing. Due to the passive nature of inertial microfluidics, each inertial sorting device is typically fixed to a certain cut-off size for particle separation that is mainly dependent on the channel geometry and dimensions, which however lacks tunability in the separation threshold to fulfill the needs of different sorting applications. In this work, we explore the use of non-Newtonian viscoelastic fluids to achieve size-tunable elasto-inertial particle focusing and sorting in a microfluidic device with reverse wavy channel structures. The balance and competition among inertial lift force, Dean drag force and the controllable elastic lift force give rise to interesting size-based particle focusing phenomena with tunability in the equilibrium focusing positions. Seven differently sized fluorescent microspheres (0.3, 2, 3, 5, 7, 10 and 15 μm) are used to investigate the effects of the flow rate, viscoelastic fluid concentration and particle size on the tunable elasto-inertial focusing behavior. With the sorting tunability, we have achieved a highly effective sorting of a particle mixture into three subpopulations based on the particle size, i.e., small, intermediate and large subpopulations. We even demonstrate the controllable tunability among three separation thresholds for elasto-inertial particle sorting without changing the geometry and dimensions of the microfluidic device. The tunability of the developed elasto-inertial particle focusing and sorting can significantly broaden its application in a variety of biomedical research studies.
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Affiliation(s)
- Yinning Zhou
- Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore 487372, Singapore.
| | - Zhichao Ma
- Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore 487372, Singapore.
| | - Ye Ai
- Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore 487372, Singapore.
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27
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Herrmann N, Neubauer P, Birkholz M. Spiral microfluidic devices for cell separation and sorting in bioprocesses. BIOMICROFLUIDICS 2019; 13:061501. [PMID: 31700559 PMCID: PMC6831504 DOI: 10.1063/1.5125264] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 10/14/2019] [Indexed: 05/04/2023]
Abstract
Inertial microfluidic systems have been arousing interest in medical applications due to their simple and cost-efficient use. However, comparably small sample volumes in the microliter and milliliter ranges have so far prevented efficient applications in continuous bioprocesses. Nevertheless, recent studies suggest that these systems are well suited for cell separation in bioprocesses because of their facile adaptability to various reactor sizes and cell types. This review will discuss potential applications of inertial microfluidic cell separation systems in downstream bioprocesses and depict recent advances in inertial microfluidics for bioprocess intensification. This review thereby focusses on spiral microchannels that separate particles at a moderate Reynolds number in a laminar flow (Re < 2300) according to their size by applying lateral hydrodynamic forces. Spiral microchannels have already been shown to be capable of replacing microfilters, extracting dead cells and debris in perfusion processes, and removing contaminant microalgae species. Recent advances in parallelization made it possible to process media on a liter-scale, which might pave the way toward industrial applications.
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Affiliation(s)
- N. Herrmann
- Institute of Biotechnology, Technische Universität Berlin, Ackerstr. 76, 13355 Berlin, Germany
| | - P. Neubauer
- Institute of Biotechnology, Technische Universität Berlin, Ackerstr. 76, 13355 Berlin, Germany
| | - M. Birkholz
- IHP—Leibniz-Institut für innovative Mikroelektronik, Im Technologiepark 25, 15236 Frankfurt (Oder), Germany
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28
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Designing Microfluidic Devices to Sort Haematopoietic Stem Cells Based on Their Mechanical Properties. Stem Cells Int 2019; 2019:8540706. [PMID: 31582990 PMCID: PMC6748184 DOI: 10.1155/2019/8540706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 06/11/2019] [Accepted: 06/20/2019] [Indexed: 12/03/2022] Open
Abstract
Aim Few haematopoietic stem cells (HSCs) injected systemically for therapeutic purposes actually reach sites of injury as the vast majority become entrapped within pulmonary capillaries. One promising approach to maintain circulating HSC numbers would be to separate subpopulations with smaller size and/or greater deformability from a heterogeneous population. This study tested whether this could be achieved using label-free microfluidic devices. Methods 2 straight (A-B) and 3 spiral (C-E) devices were fabricated with different dimensions. Cell sorting was performed at different flow rates after which cell diameter and stiffness were determined using micromanipulation. Cells isolated using the most efficient device were tested intravitally for their ability to home to the mouse injured gut. Results Only straight Device B at a high flow rate separated HSCs with different mechanical properties. Side outlets collected mostly deformable cells (nominal rupture stress/σR = 6.81 kPa; coefficient of variation/CV = 0.31) at a throughput of 2.3 × 105 cells/min. All spiral devices at high flow rates separated HSCs with different stiffness and size. Inner outlets collected mostly deformable cells in Devices C (σR = 25.06 kPa; CV = 0.26), D (σR = 22.21 kPa; CV = 0.41), and E (σR = 29.26 kPa; CV = 0.27) at throughputs of 2.3 × 105 cells/min, 1.5 × 105 cells/min, and 1.6 × 105 cells/min, respectively. Since Device C separated cells with higher efficiency and throughput, it was utilized to test the homing ability of separated cells in vivo. Significantly more deformable cells were observed trafficking through the injured gut—interestingly, increased retention was not observed. Conclusion This study applied microfluidics to separate subpopulations from one stem cell type based on their intrinsic mechanical heterogeneity. Fluid dynamics within curved devices most effectively separated HSCs. Such devices may benefit cellular therapy.
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Pang L, Ding J, Ge Y, Fan J, Fan SK. Single-Cell-Derived Tumor-Sphere Formation and Drug-Resistance Assay Using an Integrated Microfluidics. Anal Chem 2019; 91:8318-8325. [DOI: 10.1021/acs.analchem.9b01084] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Long Pang
- School of Basic Medical Science, The Shaanxi Key Laboratory of Brain Disorders, Xi’an Medical University, Xi’an, 710021, China
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, 710049, China
| | - Jing Ding
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, 710049, China
| | - Yuxin Ge
- School of Basic Medical Science, The Shaanxi Key Laboratory of Brain Disorders, Xi’an Medical University, Xi’an, 710021, China
| | - Jianglin Fan
- School of Basic Medical Science, The Shaanxi Key Laboratory of Brain Disorders, Xi’an Medical University, Xi’an, 710021, China
| | - Shih-Kang Fan
- Department of Mechanical Engineering, National Taiwan University, Taipei 10617, Taiwan
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Chang Z, Shen Y, Lang Q, Zheng H, Tokuyasu TA, Huang S, Liu C. Microfluidic Synchronizer Using a Synthetic Nanoparticle-Capped Bacterium. ACS Synth Biol 2019; 8:962-967. [PMID: 30964646 DOI: 10.1021/acssynbio.9b00058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Conventional techniques to synchronize bacterial cells often require manual manipulations and lengthy incubation lacking precise temporal control. An automated microfluidic device was recently developed to overcome these limitations. However, it exploits the stalk property of Caulobacter crescentus that undergoes asymmetric stalked and swarmer cell cycle stages and is therefore restricted to this species. To address this shortcoming, we have engineered Escherichia coli cells to adhere to microchannel walls via a synthetic and inducible "stalk". The pole of E. coli is capped by magnetic fluorescent nanoparticles via a polar-localized outer membrane protein. A mass of cells is immobilized in a microfluidic chamber by an externally applied magnetic field. Daughter cells are formed without the induced stalk and hence are flushed out, yielding a synchronous population of "baby" cells. The stalks can be tracked by GFP and nanoparticle fluorescence; no fluorescence signal is detected in the eluted cell population, indicating that it consists solely of daughters. The collected daughter cells display superb synchrony. The results demonstrate a new on-chip method to synchronize the model bacterium E. coli and likely other bacterial species, and also foster the application of synthetic biology to the study of the bacterial cell cycle.
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Affiliation(s)
- Zhiguang Chang
- Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People’s Republic of China
- Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Yue Shen
- BGI-Shenzhen, Shenzhen, 518083, China
- Shenzhen Engineering Laboratory for Innovative Molecular Diagnostics, Shenzhen, 518120, China
- Guangdong Provincial Key Laboratory of Genome Read and Write, Shenzhen, 518120, China
- Guangdong Provincial Academician Workstation of BGI Synthetic Genomics, BGI-Shenzhen, Guangdong, China
| | - Qi Lang
- Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People’s Republic of China
- Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Hai Zheng
- Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People’s Republic of China
- Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Taku A. Tokuyasu
- Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People’s Republic of China
- Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People’s Republic of China
| | - Shuqiang Huang
- Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People’s Republic of China
- Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Chenli Liu
- Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People’s Republic of China
- Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
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Cruz J, Graells T, Walldén M, Hjort K. Inertial focusing with sub-micron resolution for separation of bacteria. LAB ON A CHIP 2019; 19:1257-1266. [PMID: 30821308 DOI: 10.1039/c9lc00080a] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
In this paper, we study inertial focusing in curved channels and demonstrate the alignment of particles with diameters between 0.5 and 2.0 μm, a range of biological relevance since it comprises a multitude of bacteria and organelles of eukaryotic cells. The devices offer very sensitive control over the equilibrium positions and allow two modes of operation. In the first, particles having a large variation in size are focused and concentrated together. In the second, the distribution spreads in a range of sizes achieving separation with sub-micron resolution. These systems were validated with three bacteria species (Escherichia coli, Salmonella typhimurium and Klebsiella pneumoniae) showing good alignment while maintaining the viability in all cases. The experiments also revealed that the particles follow a helicoidal trajectory to reach the equilibrium positions, similar to the fluid streamlines simulated in COMSOL, implying that these positions occupy different heights in the cross section. When the equilibrium positions move to the inner wall as the flow rate increases, they are at a similar distance from the centre than in straight channels (∼0.6R), but when the equilibrium positions move to the outer wall as the flow rate increases, they are closer to the centre and the particles pass close to the inner wall to elevate their position before reaching them. These observations were used along with COMSOL simulations to explain the mechanism behind the local force balance and the migration of particles, which we believe contributes to further understanding of the phenomenon. Hopefully, this will make designing more intuitive and reduce the high pressure demands, enabling manipulation of particles much smaller than a micrometer.
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Affiliation(s)
- Javier Cruz
- Engineering Sciences, Uppsala University, Ångström Laboratoriet, Uppsala, Sweden.
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Zhang J, Yuan D, Zhao Q, Teo AJT, Yan S, Ooi CH, Li W, Nguyen NT. Fundamentals of Differential Particle Inertial Focusing in Symmetric Sinusoidal Microchannels. Anal Chem 2019; 91:4077-4084. [DOI: 10.1021/acs.analchem.8b05712] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jun Zhang
- Queensland Micro and Nanotechnology Centre, Griffith University, Brisbane, Queensland 4111, Australia
| | - Dan Yuan
- School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Qianbin Zhao
- School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Adrian J. T. Teo
- Queensland Micro and Nanotechnology Centre, Griffith University, Brisbane, Queensland 4111, Australia
| | - Sheng Yan
- Department of Chemistry, University of Tokyo, Tokyo 113-0033, Japan
| | - Chin Hong Ooi
- Queensland Micro and Nanotechnology Centre, Griffith University, Brisbane, Queensland 4111, Australia
| | - Weihua Li
- School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Nam-Trung Nguyen
- Queensland Micro and Nanotechnology Centre, Griffith University, Brisbane, Queensland 4111, Australia
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33
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Liu N, Petchakup C, Tay HM, Li KHH, Hou HW. Spiral Inertial Microfluidics for Cell Separation and Biomedical Applications. Bioanalysis 2019. [DOI: 10.1007/978-981-13-6229-3_5] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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Affiliation(s)
- Daniel Stoecklein
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Dino Di Carlo
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, United States
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35
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Abstract
Inertial Microfluidics offer a high throughput, label-free, easy to design, and cost-effective solutions, and are a promising technique based on hydrodynamic forces (passive techniques) instead of external ones, which can be employed in the lab-on-a-chip and micro-total-analysis-systems for the focusing, manipulation, and separation of microparticles in chemical and biomedical applications. The current study focuses on the focusing behavior of the microparticles in an asymmetric curvilinear microchannel with curvature angle of 280°. For this purpose, the focusing behavior of the microparticles with three different diameters, representing cells with different sizes in the microchannel, was experimentally studied at flow rates from 400 to 2700 µL/min. In this regard, the width and position of the focusing band are carefully recorded for all of the particles in all of the flow rates. Moreover, the distance between the binary combinations of the microparticles is reported for each flow rate, along with the Reynolds number corresponding to the largest distances. Furthermore, the results of this study are compared with those of the microchannel with the same curvature angle but having a symmetric geometry. The microchannel proposed in this study can be used or further modified for cell separation applications.
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36
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Abstract
Inertial microfluidics is a widely used technology which enables label-free manipulation of particles in microchannels. However, this technology has been limited to bioparticles larger than RBCs, due to the strong correlation between the inertial lift forces and the particle size. This paper presents a method to extend the capabilities of inertial microfluidics to smaller bioparticles, of which a plethora of clinically relevant types exist in the human body. Therefore, this method can be integrated with microfluidic devices for inertial manipulation of bioparticles that have defied all prior attempts, enabling a variety of applications in clinical diagnosis including cytometry of micron-scale bioparticles, isolation and characterization of pathogens and extracellular microvesicles, or phenotyping of cancer or stem cells at physiological shear stresses. Inertial microfluidics (i.e., migration and focusing of particles in finite Reynolds number microchannel flows) is a passive, precise, and high-throughput method for microparticle manipulation and sorting. Therefore, it has been utilized in numerous biomedical applications including phenotypic cell screening, blood fractionation, and rare-cell isolation. Nonetheless, the applications of this technology have been limited to larger bioparticles such as blood cells, circulating tumor cells, and stem cells, because smaller particles require drastically longer channels for inertial focusing, which increases the pressure requirement and the footprint of the device to the extent that the system becomes unfeasible. Inertial manipulation of smaller bioparticles such as fungi, bacteria, viruses, and other pathogens or blood components such as platelets and exosomes is of significant interest. Here, we show that using oscillatory microfluidics, inertial focusing in practically “infinite channels” can be achieved, allowing for focusing of micron-scale (i.e. hundreds of nanometers) particles. This method enables manipulation of particles at extremely low particle Reynolds number (Rep < 0.005) flows that are otherwise unattainable by steady-flow inertial microfluidics (which has been limited to Rep > ∼10−1). Using this technique, we demonstrated that synthetic particles as small as 500 nm and a submicron bacterium, Staphylococcus aureus, can be inertially focused. Furthermore, we characterized the physics of inertial microfluidics in this newly enabled particle size and Rep range using a Peclet-like dimensionless number (α). We experimentally observed that α >> 1 is required to overcome diffusion and be able to inertially manipulate particles.
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37
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38
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Acevedo JP, Angelopoulos I, van Noort D, Khoury M. Microtechnology applied to stem cells research and development. Regen Med 2018; 13:233-248. [PMID: 29557299 DOI: 10.2217/rme-2017-0123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Microfabrication and microfluidics contribute to the research of cellular functions of cells and their interaction with their environment. Previously, it has been shown that microfluidics can contribute to the isolation, selection, characterization and migration of cells. This review aims to provide stem cell researchers with a toolkit of microtechnology (mT) instruments for elucidating complex stem cells functions which are challenging to decipher with traditional assays and animal models. These microdevices are able to investigate about the differentiation and niche interaction, stem cells transcriptomics, therapeutic functions and the capture of their secreted microvesicles. In conclusion, microtechnology will allow a more realistic assessment of stem cells properties, driving and accelerating the translation of regenerative medicine approaches to the clinic.
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Affiliation(s)
- Juan Pablo Acevedo
- Laboratory of Nano-Regenerative Medicine, Faculty of Medicine, Universidad de Los Andes, Santiago, Chile.,Cells for Cells, Santiago, Chile
| | - Ioannis Angelopoulos
- Laboratory of Nano-Regenerative Medicine, Faculty of Medicine, Universidad de Los Andes, Santiago, Chile.,Cells for Cells, Santiago, Chile
| | - Danny van Noort
- Facultad de Ingeniería y Ciencias Aplicadas Universidad de los Andes, Santiago, Chile.,Biotechnology, IFM, Linköping University, Sweden
| | - Maroun Khoury
- Laboratory of Nano-Regenerative Medicine, Faculty of Medicine, Universidad de Los Andes, Santiago, Chile.,Cells for Cells, Santiago, Chile.,Consorcio Regenero, Santiago, Chile
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39
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Abdulla A, Liu W, Gholamipour-Shirazi A, Sun J, Ding X. High-Throughput Isolation of Circulating Tumor Cells Using Cascaded Inertial Focusing Microfluidic Channel. Anal Chem 2018. [PMID: 29537252 DOI: 10.1021/acs.analchem.7b04210] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Circulating tumor cells (CTCs) are rare cells that detach from a primary or metastasis tumor and flow into the bloodstream. Intact and viable tumor cells are needed for genetic characterization of CTCs, new drug development, and other research. Although separation of CTCs using spiral channel with two outlets has been reported, few literature demonstrated simultaneous isolation of different types of CTCs from human blood using cascaded inertial focusing microfluidic channel. Herein, we introduce a cascaded microfluidic device consisting of two spiral channels and one zigzag channel designed with different fluid fields, including lift force, Dean drag force, and centrifugal force. Both red blood cells (RBCs)-lysed human blood spiked with CTCs and 1:50 diluted human whole blood spiked with CTCs were tested on the presented chip. This chip successfully separated RBCs, white blood cells (WBCs), and two different types of tumor cells (human lung cancer cells (A549) and human breast cancer cells (MCF-7)) simultaneously based on their physical properties. A total of 80.75% of A549 and 73.75% of MCF-7 were faithfully separated from human whole blood. Furthermore, CTCs gathered from outlets could propagate and remained intact. The cell viability of A549 and MCF-7 were 95% and 98%, respectively. The entire separating process for CTCs from blood cells could be finished within 20 min. The cascaded microfluidic device introduced in this study serves as a novel platform for simultaneous isolation of multiple types of CTCs from patient blood.
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Affiliation(s)
- Aynur Abdulla
- State Key Laboratory of Oncogenes and Related Genes, Institute for Personalized Medicine, School of Biomedical Engineering , Shanghai Jiao Tong University , Shanghai 200030 , China
| | - Wenjia Liu
- State Key Laboratory of Oncogenes and Related Genes, Institute for Personalized Medicine, School of Biomedical Engineering , Shanghai Jiao Tong University , Shanghai 200030 , China
| | - Azarmidokht Gholamipour-Shirazi
- State Key Laboratory of Oncogenes and Related Genes, Institute for Personalized Medicine, School of Biomedical Engineering , Shanghai Jiao Tong University , Shanghai 200030 , China
| | - Jiahui Sun
- State Key Laboratory of Oncogenes and Related Genes, Institute for Personalized Medicine, School of Biomedical Engineering , Shanghai Jiao Tong University , Shanghai 200030 , China
| | - Xianting Ding
- State Key Laboratory of Oncogenes and Related Genes, Institute for Personalized Medicine, School of Biomedical Engineering , Shanghai Jiao Tong University , Shanghai 200030 , China
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40
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Shen S, Kou L, Zhang X, Wang D, Niu Y, Wang J. Regulating Secondary Flow in Ultra-Low Aspect Ratio Microchannels by Dimensional Confinement. ADVANCED THEORY AND SIMULATIONS 2018. [DOI: 10.1002/adts.201700034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Shaofei Shen
- College of Life Science; Shanxi Agricultural University; Taigu Shanxi 030801 China
| | - Lisha Kou
- College of Life Science; Shanxi Agricultural University; Taigu Shanxi 030801 China
| | - Xuan Zhang
- College of Life Science; Shanxi Agricultural University; Taigu Shanxi 030801 China
| | - Defu Wang
- College of Life Science; Shanxi Agricultural University; Taigu Shanxi 030801 China
| | - Yanbing Niu
- College of Life Science; Shanxi Agricultural University; Taigu Shanxi 030801 China
| | - Jinyi Wang
- College of Chemistry and Pharmacy; Northwest A&F University; Yangling Shaanxi 712100 China
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41
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Shen S, Tian C, Li T, Xu J, Chen SW, Tu Q, Yuan MS, Liu W, Wang J. Spiral microchannel with ordered micro-obstacles for continuous and highly-efficient particle separation. LAB ON A CHIP 2017; 17:3578-3591. [PMID: 28975177 DOI: 10.1039/c7lc00691h] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Controllable manipulation of fluid flow is crucial for efficient particle separation, which is associated with plenty of biomedical and industrial applications. Microfluidic technologies have achieved promising progress in particle positioning depending on inertial force with or without the help of the Dean effect. Herein, we describe an inertial microfluidic system containing a spiral microchannel for various highly efficient particle separations. We demonstrated that Dean-like secondary flow can be regulated by geometric confinement in the microchannel. On the introduction of a library of micro-obstacles into the spiral microchannels, the resulting linear acceleration of secondary flow can be applied to remarkably enhance particle focusing in time and space. Further, multiple separating and sorting manipulations of particles including polymeric particles, circulating tumor cells, and blood cells, can be successfully accomplished in the dimension-confined spiral channels in a sheathless, high-throughput (typically 3 ml min-1), long-term (at least 4 h), and highly-efficient (up to 99.8% focusing) manner. The methodological achievement pointing to ease-of-use, effective, and high-throughput particle manipulations is useful for both laboratory and commercial developments of microfluidic systems in life and material sciences.
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Affiliation(s)
- Shaofei Shen
- College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China.
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42
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Liu FD, Pishesha N, Poon Z, Kaushik T, Van Vliet KJ. Material Viscoelastic Properties Modulate the Mesenchymal Stem Cell Secretome for Applications in Hematopoietic Recovery. ACS Biomater Sci Eng 2017; 3:3292-3306. [DOI: 10.1021/acsbiomaterials.7b00644] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Frances D. Liu
- Department
of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- BioSystems
and Micromechanics (BioSyM) Interdisciplinary Research Group, Singapore−MIT Alliance for Research and Technology, CREATE, Singapore 138602
| | - Novalia Pishesha
- Department
of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts 02139, United States
| | - Zhiyong Poon
- BioSystems
and Micromechanics (BioSyM) Interdisciplinary Research Group, Singapore−MIT Alliance for Research and Technology, CREATE, Singapore 138602
| | - Tanwi Kaushik
- BioSystems
and Micromechanics (BioSyM) Interdisciplinary Research Group, Singapore−MIT Alliance for Research and Technology, CREATE, Singapore 138602
| | - Krystyn J. Van Vliet
- Department
of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- BioSystems
and Micromechanics (BioSyM) Interdisciplinary Research Group, Singapore−MIT Alliance for Research and Technology, CREATE, Singapore 138602
- Department
of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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43
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Wang C, Hou W, Guo X, Li J, Hu T, Qiu M, Liu S, Mo X, Liu X. Two-phase electrospinning to incorporate growth factors loaded chitosan nanoparticles into electrospun fibrous scaffolds for bioactivity retention and cartilage regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017. [DOI: 10.1016/j.msec.2017.05.075] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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44
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Kwon T, Prentice H, Oliveira JD, Madziva N, Warkiani ME, Hamel JFP, Han J. Microfluidic Cell Retention Device for Perfusion of Mammalian Suspension Culture. Sci Rep 2017; 7:6703. [PMID: 28751635 PMCID: PMC5532224 DOI: 10.1038/s41598-017-06949-8] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 06/19/2017] [Indexed: 12/16/2022] Open
Abstract
Continuous production of biologics, a growing trend in the biopharmaceutical industry, requires a reliable and efficient cell retention device that also maintains cell viability. Current filtration methods, such as tangential flow filtration using hollow-fiber membranes, suffer from membrane fouling, leading to significant reliability and productivity issues such as low cell viability, product retention, and an increased contamination risk associated with filter replacement. We introduce a novel cell retention device based on inertial sorting for perfusion culture of suspended mammalian cells. The device was characterized in terms of cell retention capacity, biocompatibility, scalability, and long-term reliability. This technology was demonstrated using a high concentration (>20 million cells/mL) perfusion culture of an IgG1-producing Chinese hamster ovary (CHO) cell line for 18-25 days. The device demonstrated reliable and clog-free cell retention, high IgG1 recovery (>99%) and cell viability (>97%). Lab-scale perfusion cultures (350 mL) were used to demonstrate the technology, which can be scaled-out with parallel devices to enable larger scale operation. The new cell retention device is thus ideal for rapid perfusion process development in a biomanufacturing workflow.
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Affiliation(s)
- Taehong Kwon
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, USA
| | | | - Jonas De Oliveira
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Nyasha Madziva
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Majid Ebrahimi Warkiani
- School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, Australia
| | - Jean-François P Hamel
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
| | - Jongyoon Han
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, USA.
- BioSystems and Micromechanics (BioSyM) IRG, Singapore-MIT Alliance for Research and Technology (SMART) Centre, Singapore, Singapore.
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
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45
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46
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Yamada M, Seko W, Yanai T, Ninomiya K, Seki M. Slanted, asymmetric microfluidic lattices as size-selective sieves for continuous particle/cell sorting. LAB ON A CHIP 2017; 17:304-314. [PMID: 27975084 DOI: 10.1039/c6lc01237j] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Hydrodynamic microfluidic platforms have been proven to be useful and versatile for precisely sorting particles/cells based on their physicochemical properties. In this study, we demonstrate that a simple lattice-shaped microfluidic pattern can work as a virtual sieve for size-dependent continuous particle sorting. The lattice is composed of two types of microchannels ("main channels" and "separation channels"). These channels cross each other in a perpendicular fashion, and are slanted against the macroscopic flow direction. The difference in the densities of these channels generates an asymmetric flow distribution at each intersection. Smaller particles flow along the streamline, whereas larger particles are filtered and gradually separated from the stream, resulting in continuous particle sorting. We successfully sorted microparticles based on size with high accuracy, and clearly showed that geometric parameters, including the channel density and the slant angle, critically affect the sorting behaviors of particles. Leukocyte sorting and monocyte purification directly from diluted blood samples have been demonstrated as biomedical applications. The presented system for particle/cell sorting would become a simple but versatile unit operation in microfluidic apparatus for chemical/biological experiments and manipulations.
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Affiliation(s)
- Masumi Yamada
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
| | - Wataru Seko
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
| | - Takuma Yanai
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
| | - Kasumi Ninomiya
- Asahi Kasei Corp, 2-1 Samejima, Fuji-shi, Shizuoka 416-8501, Japan
| | - Minoru Seki
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
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47
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Yousuff CM, Ho ETW, Hussain K. I, Hamid NHB. Microfluidic Platform for Cell Isolation and Manipulation Based on Cell Properties. MICROMACHINES 2017. [PMCID: PMC6189901 DOI: 10.3390/mi8010015] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Caffiyar Mohamed Yousuff
- Correspondence: (C.M.Y.); (E.T.W.H.); (N.H.B.H.); Tel.: +60-1678-50269 (C.M.Y.); +60-1238-17752 (E.T.W.H.); +60-1927-87127 (N.H.B.H.)
| | - Eric Tatt Wei Ho
- Correspondence: (C.M.Y.); (E.T.W.H.); (N.H.B.H.); Tel.: +60-1678-50269 (C.M.Y.); +60-1238-17752 (E.T.W.H.); +60-1927-87127 (N.H.B.H.)
| | | | - Nor Hisham B. Hamid
- Correspondence: (C.M.Y.); (E.T.W.H.); (N.H.B.H.); Tel.: +60-1678-50269 (C.M.Y.); +60-1238-17752 (E.T.W.H.); +60-1927-87127 (N.H.B.H.)
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48
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Inertial Microfluidics: Mechanisms and Applications. ADVANCED MECHATRONICS AND MEMS DEVICES II 2017. [DOI: 10.1007/978-3-319-32180-6_25] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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49
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Jimenez M, Miller B, Bridle HL. Efficient separation of small microparticles at high flowrates using spiral channels: Application to waterborne pathogens. Chem Eng Sci 2017. [DOI: 10.1016/j.ces.2015.08.042] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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50
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Pang L, Liu W, Tian C, Xu J, Li T, Chen SW, Wang J. Construction of single-cell arrays and assay of cell drug resistance in an integrated microfluidic platform. LAB ON A CHIP 2016; 16:4612-4620. [PMID: 27785515 DOI: 10.1039/c6lc01000h] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The cellular heterogeneity of tumors has played important roles in various tumor-related research areas and applications such as the cellular biology, metastasis and clinical diagnosis of tumors. Although several microfluidics-based single-cell separation and analysis techniques have been used in research into the cellular heterogeneity of tumors, further investigation is still required for studying the effect of the biomechanical (e.g., size and deformability) heterogeneity of cells on their biological characteristics (e.g., drug resistance and tumor-initiating features). Here, we established an integrated microfluidic platform for the construction of single-cell arrays and analysis of drug resistance. Using this device, high-throughput single-cell arrays could be easily obtained according to the biomechanical (size and deformability) heterogeneity of cells. To demonstrate the capability of the microfluidic platform, a proof-of-concept experiment was implemented by determining the vincristine resistance of single glioblastoma cells with different biomechanical properties. The results indicated that the biomechanics of tumor cells had significant implications for cell drug resistance; that is, small and/or more deformable tumor cells had higher drug resistance than large and/or less deformable tumor cells. This device provides a new approach for the isolation of single cells according to the different biomechanical properties of cells. Also, it possesses practical potential for studies of tumors on a single-cell level.
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Affiliation(s)
- Long Pang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Wenming Liu
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Chang Tian
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Juan Xu
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Tianbao Li
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Shu-Wei Chen
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jinyi Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China. and College of Science, Northwest A&F University, Yangling, Shaanxi 712100, China
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