1
|
Mane S, Behera A, Hemadri V, Bhand S, Tripathi S. Micropump integrated white blood cell separation platform for detection of chronic granulomatous disease. Mikrochim Acta 2024; 191:295. [PMID: 38700804 DOI: 10.1007/s00604-024-06372-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 04/18/2024] [Indexed: 05/05/2024]
Abstract
White blood cells (WBCs) are robust defenders during antigenic challenges and prime immune cell functioning indicators. High-purity WBC separation is vital for various clinical assays and disease diagnosis. Red blood cells (RBCs) are a major hindrance in WBC separation, constituting 1000 times the WBC population. The study showcases a low-cost micropump integrated microfluidic platform to provide highly purified WBCs for point-of-care testing. An integrated user-friendly microfluidic platform was designed to separate WBCs from finger-prick blood (⁓5 μL), employing an inertial focusing technique. We achieved an efficient WBC separation with 86% WBC purity and 99.99% RBC removal rate in less than 1 min. In addition, the microdevice allows lab-on-chip colorimetric evaluation of chronic granulomatous disease (CGD), a rare genetic disorder affecting globally. The assay duration, straight from separation to disease detection, requires only 20 min. Hence, the proposed microfluidic platform can further be implemented to streamline various clinical procedures involving WBCs in healthcare industries.
Collapse
Affiliation(s)
- Sanjay Mane
- Department of Mechanical Engineering, BITS-Pilani, K K Birla Goa Campus, Sankval, Goa, 403726, India
| | - Abhishek Behera
- Department of Mechanical Engineering, BITS-Pilani, K K Birla Goa Campus, Sankval, Goa, 403726, India
| | - Vadiraj Hemadri
- Department of Mechanical Engineering, BITS-Pilani, K K Birla Goa Campus, Sankval, Goa, 403726, India
| | - Sunil Bhand
- Department of Chemistry, BITS-Pilani, K K Birla Goa Campus, Sankval, Goa, 403726, India
| | - Siddhartha Tripathi
- Department of Mechanical Engineering, BITS-Pilani, K K Birla Goa Campus, Sankval, Goa, 403726, India.
| |
Collapse
|
2
|
Ashkani A, Jafari A, Ghomsheh MJ, Dumas N, Funfschilling D. Enhancing particle focusing: a comparative experimental study of modified square wave and square wave microchannels in lift and Dean vortex regimes. Sci Rep 2024; 14:2679. [PMID: 38302543 PMCID: PMC10834497 DOI: 10.1038/s41598-024-52839-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 01/24/2024] [Indexed: 02/03/2024] Open
Abstract
Serpentine microchannels are known for their effective particle focusing through Dean flow-induced rotational effects, which are used in compact designs for size-dependent focusing in medical diagnostics. This study explores square serpentine microchannels, a geometry that has recently gained prominence in inertial microfluidics, and presents a modification of square wave microchannels for improved particle separation and focusing. The proposed modification incorporates an additional U-shaped unit to convert the square wave microchannel into a non-axisymmetric structure, which enhances the Dean flow and consequently increases the Dean drag force. Extensive experiments were conducted covering a wide range of Reynolds numbers and particle sizes (2.45 µm to 12 µm). The particle concentration capability and streak position dynamics of the two structures were compared in detail. The results indicate that the modified square-wave microchannel exhibits efficient particle separation in the lower part of the Dean vortex-dominated regime. With increasing Reynolds number, the particles are successively focused into two streaks in the lift force-dominated regime and into a single streak in the Dean vortex-dominated regime, in this modified square wave geometry. These streaks have a low standard deviation around a mean value. In the Dean vortex-dominated regime, the location of the particle stream is highly dependent on the particle size, which allows good particle separation. Particle focusing occurs at lower Reynolds numbers in both the lift-dominated and lift/Dean drag-dominated regions than in the square wave microchannel. The innovative serpentine channel is particularly useful for the Dean drag-dominated regime and introduces a unique asymmetry that affects the particle focusing dynamics. The proposed device offers significant advantages in terms of efficiency, parallelization, footprint, and throughput over existing geometries.
Collapse
Affiliation(s)
- Ali Ashkani
- School of Mechanical Engineering, Faculty of Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, Iran
| | - Azadeh Jafari
- School of Mechanical Engineering, Faculty of Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, Iran.
- ICube, UMR 7357-CNRS-Université de Strasbourg, 1, Cours des Cigarières, 67000, Strasbourg, France.
| | - Mehryar Jannesari Ghomsheh
- School of Mechanical Engineering, Faculty of Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, Iran
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Norbert Dumas
- ICube, UMR 7357-CNRS-Université de Strasbourg, 1, Cours des Cigarières, 67000, Strasbourg, France
- ICube, UMR 7357-CNRS-Université de Strasbourg, 300 bd Sébastien Brant, 67412, Illkirch, France
| | - Denis Funfschilling
- ICube, UMR 7357-CNRS-Université de Strasbourg, 1, Cours des Cigarières, 67000, Strasbourg, France.
| |
Collapse
|
3
|
Peng T, Qiang J, Yuan S. Sheathless inertial particle focusing methods within microfluidic devices: a review. Front Bioeng Biotechnol 2024; 11:1331968. [PMID: 38260735 PMCID: PMC10801244 DOI: 10.3389/fbioe.2023.1331968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 12/18/2023] [Indexed: 01/24/2024] Open
Abstract
The ability to manipulate and focus particles within microscale fluidic environments is crucial to advancing biological, chemical, and medical research. Precise and high-throughput particle focusing is an essential prerequisite for various applications, including cell counting, biomolecular detection, sample sorting, and enhancement of biosensor functionalities. Active and sheath-assisted focusing techniques offer accuracy but necessitate the introduction of external energy fields or additional sheath flows. In contrast, passive focusing methods exploit the inherent fluid dynamics in achieving high-throughput focusing without external actuation. This review analyzes the latest developments in strategies of sheathless inertial focusing, emphasizing inertial and elasto-inertial microfluidic focusing techniques from the channel structure classifications. These methodologies will serve as pivotal benchmarks for the broader application of microfluidic focusing technologies in biological sample manipulation. Then, prospects for future development are also predicted. This paper will assist in the understanding of the design of microfluidic particle focusing devices.
Collapse
Affiliation(s)
- Tao Peng
- Zhuhai UM Science & Technology Research Institute, Zhuhai, China
| | - Jun Qiang
- The School of Mechanical Engineering, Ningxia University, Yinchuan, Ningxia, China
| | - Shuai Yuan
- State Key Laboratory of High Performance Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha, Hunan, China
| |
Collapse
|
4
|
Hashimoto K, Kumagai T, Nomura K, Miyagawa Y, Tago S, Takasaki K, Takahashi Y, Nishida H, Ichinose T, Hirano M, Hiraike H, Wada-Hiraike O, Sasajima Y, Kim SH, Nagasaka K. Validation of an on-chip p16 ink4a/Ki-67 dual immunostaining cervical cytology system using microfluidic device technology. Sci Rep 2023; 13:17052. [PMID: 37816765 PMCID: PMC10564753 DOI: 10.1038/s41598-023-44273-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Accepted: 10/05/2023] [Indexed: 10/12/2023] Open
Abstract
More specific screening systems for cervical cancer may become necessary as the human papillomavirus (HPV) vaccine becomes more widespread. Although p16/Ki-67 dual-staining cytology has several advantages, it requires advanced diagnostic skills. Here, we developed an automated on-chip immunostaining method using a microfluidic device. An electroactive microwell array (EMA) microfluidic device with patterned thin-film electrodes at the bottom of each microwell was used for single-cell capture by dielectrophoresis. Immunostaining and dual staining for p16/Ki-67 were performed on diagnosed liquid cytology samples using the EMA device. The numbers of p16/Ki-67 dual-stained cells captured by the EMA device were determined and compared among the cervical intraepithelial neoplasia (CIN) lesion samples. Seven normal, fifteen CIN grade 3, and seven CIN grade 2 samples were examined. The percentage of dual-positive cells was 18.6% in the CIN grade 2 samples and 23.6% in the CIN grade 3 samples. The percentages of dual-positive staining increased significantly as the severity of the cervical lesions increased. p16/Ki67 dual immunostaining using the EMA device is as sensitive as the conventional method of confirming the histopathological diagnosis of cervical samples. This system enables a quantified parallel analysis at the individual cell level.
Collapse
Affiliation(s)
- Kei Hashimoto
- Department of Obstetrics and Gynecology, Teikyo University School of Medicine, Kaga 2-11-1, Itabashi-Ku, Tokyo, 173-8605, Japan
| | - Tomoo Kumagai
- Department of Obstetrics and Gynecology, Teikyo University School of Medicine, Kaga 2-11-1, Itabashi-Ku, Tokyo, 173-8605, Japan
| | - Kyosuke Nomura
- Department of Obstetrics and Gynecology, Teikyo University School of Medicine, Kaga 2-11-1, Itabashi-Ku, Tokyo, 173-8605, Japan
| | - Yuko Miyagawa
- Department of Obstetrics and Gynecology, Teikyo University School of Medicine, Kaga 2-11-1, Itabashi-Ku, Tokyo, 173-8605, Japan
| | - Saori Tago
- Institute of Industrial Science, University of Tokyo, Tokyo, Japan
| | - Kazuki Takasaki
- Department of Obstetrics and Gynecology, Teikyo University School of Medicine, Kaga 2-11-1, Itabashi-Ku, Tokyo, 173-8605, Japan
| | - Yuko Takahashi
- Department of Obstetrics and Gynecology, Teikyo University School of Medicine, Kaga 2-11-1, Itabashi-Ku, Tokyo, 173-8605, Japan
| | - Haruka Nishida
- Department of Obstetrics and Gynecology, Teikyo University School of Medicine, Kaga 2-11-1, Itabashi-Ku, Tokyo, 173-8605, Japan
| | - Takayuki Ichinose
- Department of Obstetrics and Gynecology, Teikyo University School of Medicine, Kaga 2-11-1, Itabashi-Ku, Tokyo, 173-8605, Japan
| | - Mana Hirano
- Department of Obstetrics and Gynecology, Teikyo University School of Medicine, Kaga 2-11-1, Itabashi-Ku, Tokyo, 173-8605, Japan
| | - Haruko Hiraike
- Department of Obstetrics and Gynecology, Teikyo University School of Medicine, Kaga 2-11-1, Itabashi-Ku, Tokyo, 173-8605, Japan
| | - Osamu Wada-Hiraike
- Department of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yuko Sasajima
- Department of Pathology, Teikyo University School of Medicine, Tokyo, Japan
| | - Soo Hyeon Kim
- Institute of Industrial Science, University of Tokyo, Tokyo, Japan
| | - Kazunori Nagasaka
- Department of Obstetrics and Gynecology, Teikyo University School of Medicine, Kaga 2-11-1, Itabashi-Ku, Tokyo, 173-8605, Japan.
| |
Collapse
|
5
|
Schellenberg J, Dehne M, Lange F, Scheper T, Solle D, Bahnemann J. Establishment of a Perfusion Process with Antibody-Producing CHO Cells Using a 3D-Printed Microfluidic Spiral Separator with Web-Based Flow Control. Bioengineering (Basel) 2023; 10:656. [PMID: 37370588 DOI: 10.3390/bioengineering10060656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/22/2023] [Accepted: 05/25/2023] [Indexed: 06/29/2023] Open
Abstract
Monoclonal antibodies are increasingly dominating the market for human therapeutic and diagnostic agents. For this reason, continuous methods-such as perfusion processes-are being explored and optimized in an ongoing effort to increase product yields. Unfortunately, many established cell retention devices-such as tangential flow filtration-rely on membranes that are prone to clogging, fouling, and undesirable product retention at high cell densities. To circumvent these problems, in this work, we have developed a 3D-printed microfluidic spiral separator for cell retention, which can readily be adapted and replaced according to process conditions (i.e., a plug-and-play system) due to the fast and flexible 3D printing technique. In addition, this system was also expanded to include automatic flushing, web-based control, and notification via a cellphone application. This set-up constitutes a proof of concept that was successful at inducing a stable process operation at a viable cell concentration of 10-17 × 106 cells/mL in a hybrid mode (with alternating cell retention and cell bleed phases) while significantly reducing both shear stress and channel blockage. In addition to increasing efficiency to nearly 100%, this microfluidic device also improved production conditions by successfully separating dead cells and cell debris and increasing cell viability within the bioreactor.
Collapse
Affiliation(s)
- Jana Schellenberg
- Institute of Technical Chemistry, Leibniz University Hannover, Callinstraße 5, 30167 Hannover, Germany
| | - Michaela Dehne
- Institute of Technical Chemistry, Leibniz University Hannover, Callinstraße 5, 30167 Hannover, Germany
- Institute of Physics, University of Augsburg, Universitätsstr. 1, 86159 Augsburg, Germany
| | - Ferdinand Lange
- Institute of Technical Chemistry, Leibniz University Hannover, Callinstraße 5, 30167 Hannover, Germany
| | - Thomas Scheper
- Institute of Technical Chemistry, Leibniz University Hannover, Callinstraße 5, 30167 Hannover, Germany
| | - Dörte Solle
- Institute of Technical Chemistry, Leibniz University Hannover, Callinstraße 5, 30167 Hannover, Germany
| | - Janina Bahnemann
- Institute of Physics, University of Augsburg, Universitätsstr. 1, 86159 Augsburg, Germany
| |
Collapse
|
6
|
Gharib G, Bütün İ, Muganlı Z, Kozalak G, Namlı İ, Sarraf SS, Ahmadi VE, Toyran E, van Wijnen AJ, Koşar A. Biomedical Applications of Microfluidic Devices: A Review. BIOSENSORS 2022; 12:bios12111023. [PMID: 36421141 PMCID: PMC9688231 DOI: 10.3390/bios12111023] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/30/2022] [Accepted: 11/08/2022] [Indexed: 05/26/2023]
Abstract
Both passive and active microfluidic chips are used in many biomedical and chemical applications to support fluid mixing, particle manipulations, and signal detection. Passive microfluidic devices are geometry-dependent, and their uses are rather limited. Active microfluidic devices include sensors or detectors that transduce chemical, biological, and physical changes into electrical or optical signals. Also, they are transduction devices that detect biological and chemical changes in biomedical applications, and they are highly versatile microfluidic tools for disease diagnosis and organ modeling. This review provides a comprehensive overview of the significant advances that have been made in the development of microfluidics devices. We will discuss the function of microfluidic devices as micromixers or as sorters of cells and substances (e.g., microfiltration, flow or displacement, and trapping). Microfluidic devices are fabricated using a range of techniques, including molding, etching, three-dimensional printing, and nanofabrication. Their broad utility lies in the detection of diagnostic biomarkers and organ-on-chip approaches that permit disease modeling in cancer, as well as uses in neurological, cardiovascular, hepatic, and pulmonary diseases. Biosensor applications allow for point-of-care testing, using assays based on enzymes, nanozymes, antibodies, or nucleic acids (DNA or RNA). An anticipated development in the field includes the optimization of techniques for the fabrication of microfluidic devices using biocompatible materials. These developments will increase biomedical versatility, reduce diagnostic costs, and accelerate diagnosis time of microfluidics technology.
Collapse
Affiliation(s)
- Ghazaleh Gharib
- Faculty of Engineering and Natural Science, Sabanci University, Istanbul 34956, Turkey
- Sabanci University Nanotechnology Research and Application Centre (SUNUM), Istanbul 34956, Turkey
- Center of Excellence for Functional Surfaces and Interfaces for Nano Diagnostics (EFSUN), Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul 34956, Turkey
| | - İsmail Bütün
- Faculty of Engineering and Natural Science, Sabanci University, Istanbul 34956, Turkey
| | - Zülâl Muganlı
- Faculty of Engineering and Natural Science, Sabanci University, Istanbul 34956, Turkey
| | - Gül Kozalak
- Faculty of Engineering and Natural Science, Sabanci University, Istanbul 34956, Turkey
- Center of Excellence for Functional Surfaces and Interfaces for Nano Diagnostics (EFSUN), Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul 34956, Turkey
| | - İlayda Namlı
- Faculty of Engineering and Natural Science, Sabanci University, Istanbul 34956, Turkey
| | | | | | - Erçil Toyran
- Faculty of Engineering and Natural Science, Sabanci University, Istanbul 34956, Turkey
| | - Andre J. van Wijnen
- Department of Biochemistry, University of Vermont, 89 Beaumont Avenue, Burlington, VT 05405, USA
| | - Ali Koşar
- Faculty of Engineering and Natural Science, Sabanci University, Istanbul 34956, Turkey
- Sabanci University Nanotechnology Research and Application Centre (SUNUM), Istanbul 34956, Turkey
- Center of Excellence for Functional Surfaces and Interfaces for Nano Diagnostics (EFSUN), Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul 34956, Turkey
- Turkish Academy of Sciences (TÜBA), Çankaya, Ankara 06700, Turkey
| |
Collapse
|
7
|
Ni C, Zhou Z, Zhu Z, Jiang D, Xiang N. Controllable Size-Independent Three-Dimensional Inertial Focusing in High-Aspect-Ratio Asymmetric Serpentine Microchannels. Anal Chem 2022; 94:15639-15647. [DOI: 10.1021/acs.analchem.2c02361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chen Ni
- School of Mechanical Engineering and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing211189, China
| | - Zheng Zhou
- School of Mechanical Engineering and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing211189, China
| | - Zhixian Zhu
- School of Mechanical Engineering and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing211189, China
| | - Di Jiang
- College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing210037, China
- Jiangsu Yuyue Medical Equipment and Supply Co., Ltd., Jiangsu, Danyang212300, China
| | - Nan Xiang
- School of Mechanical Engineering and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing211189, China
| |
Collapse
|
8
|
Razavi Bazaz S, Mihandust A, Salomon R, Joushani HAN, Li W, A Amiri H, Mirakhorli F, Zhand S, Shrestha J, Miansari M, Thierry B, Jin D, Ebrahimi Warkiani M. Zigzag microchannel for rigid inertial separation and enrichment (Z-RISE) of cells and particles. LAB ON A CHIP 2022; 22:4093-4109. [PMID: 36102894 DOI: 10.1039/d2lc00290f] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Separation and enrichment of target cells prior to downstream analyses is an essential pre-treatment step in many biomedical and clinical assays. Separation techniques utilizing simple, cost-effective, and user-friendly devices are highly desirable, both in the lab and at the point of need. Passive microfluidic approaches, especially inertial microfluidics, fit this brief perfectly and are highly desired. Using an optimized additive manufacturing technique, we developed a zigzag microchannel for rigid inertial separation and enrichment, hereafter referred to as Z-RISE. We empirically showed that the Z-RISE device outperforms equivalent devices based on curvilinear (sinusoidal), asymmetric curvilinear, zigzag with round corners, or square-wave formats and modelled this behavior to gain a better understanding of the physics underpinning the improved focusing and separation performance. The comparison between rigid and soft zigzag microchannels reveals that channel rigidity significantly affects and enhances the focusing performance of the microchannel. Compared to other serpentine microchannels, zigzag microfluidics demonstrates superior separation and purity efficiency due to the sudden channel cross-section expansion at the corners. Within Z-RISE, particles are aligned in either double-side or single-line focusing positions. The transition of particles from a double-focusing line to a single focusing line introduced a new phenomenon referred to as the plus focusing position. We experimentally demonstrated that Z-RISE could enrich leukocytes and their subtypes from diluted and RBC lysed blood while depleting dead cells, debris, and RBCs. Z-RISE was also shown to yield outstanding particle or cell concentration with a concentration efficiency of more than 99.99%. Our data support the great potential of Z-RISE for applications that involve particle and cell manipulations and pave the way for commercialization perspective in the near future.
Collapse
Affiliation(s)
- Sajad Razavi Bazaz
- School of Biomedical Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.
- Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Asma Mihandust
- School of Biomedical Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.
| | - 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, Australia
| | | | - Wenyan Li
- Children's Cancer Institute, Lowy Cancer Centre, UNSW Sydney, Kensington, NSW, Australia
| | - Hoseyn A Amiri
- Micro+Nanosystems & Applied Biophysics Laboratory, Department of Mechanical Engineering, Babol Noshirvani University of Technology, P.O. Box 484, Babol 47148-71167, Iran
- Department of Cancer Medicine, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, Isar 11, Babol 47138-18983, Iran
| | - Fateme Mirakhorli
- School of Biomedical Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.
| | - Sareh Zhand
- School of Biomedical Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.
- Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Jesus Shrestha
- School of Biomedical Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.
| | - Morteza Miansari
- Micro+Nanosystems & Applied Biophysics Laboratory, Department of Mechanical Engineering, Babol Noshirvani University of Technology, P.O. Box 484, Babol 47148-71167, Iran
- Department of Cancer Medicine, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, Isar 11, Babol 47138-18983, Iran
| | - Benjamin Thierry
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, Adelaide, SA, 5095 Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Parkville, Victoria, 3052 Australia
| | - Dayong Jin
- Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Majid Ebrahimi Warkiani
- School of Biomedical Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.
- Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia
| |
Collapse
|
9
|
Separation of White Blood Cells in a Wavy Type Microfluidic Device Using Blood Diluted in a Hypertonic Saline Solution. BIOCHIP JOURNAL 2022. [DOI: 10.1007/s13206-022-00074-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
|
10
|
Altay R, Yapici MK, Koşar A. A Hybrid Spiral Microfluidic Platform Coupled with Surface Acoustic Waves for Circulating Tumor Cell Sorting and Separation: A Numerical Study. BIOSENSORS 2022; 12:bios12030171. [PMID: 35323441 PMCID: PMC8946654 DOI: 10.3390/bios12030171] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/08/2022] [Accepted: 03/08/2022] [Indexed: 05/28/2023]
Abstract
The separation of circulating tumor cells (CTCs) from blood samples is crucial for the early diagnosis of cancer. During recent years, hybrid microfluidics platforms, consisting of both passive and active components, have been an emerging means for the label-free enrichment of circulating tumor cells due to their advantages such as multi-target cell processing with high efficiency and high sensitivity. In this study, spiral microchannels with different dimensions were coupled with surface acoustic waves (SAWs). Numerical simulations were conducted at different Reynolds numbers to analyze the performance of hybrid devices in the sorting and separation of CTCs from red blood cells (RBCs) and white blood cells (WBCs). Overall, in the first stage, the two-loop spiral microchannel structure allowed for the utilization of inertial forces for passive separation. In the second stage, SAWs were introduced to the device. Thus, five nodal pressure lines corresponding to the lateral position of the five outlets were generated. According to their physical properties, the cells were trapped and lined up on the corresponding nodal lines. The results showed that three different cell types (CTCs, RBCs, and WBCs) were successfully focused and collected from the different outlets of the microchannels by implementing the proposed multi-stage hybrid system.
Collapse
Affiliation(s)
- Rana Altay
- Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul 34956, Turkey; (R.A.); (M.K.Y.)
| | - Murat Kaya Yapici
- Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul 34956, Turkey; (R.A.); (M.K.Y.)
- Center of Excellence for Functional Surfaces and Interfaces for Nano-Diagnostics, Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul 34956, Turkey
| | - Ali Koşar
- Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul 34956, Turkey; (R.A.); (M.K.Y.)
- Center of Excellence for Functional Surfaces and Interfaces for Nano-Diagnostics, Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul 34956, Turkey
| |
Collapse
|
11
|
Xu X, Huang X, Sun J, Wang R, Yao J, Han W, Wei M, Chen J, Guo J, Sun L, Yin M. Recent progress of inertial microfluidic-based cell separation. Analyst 2021; 146:7070-7086. [PMID: 34761757 DOI: 10.1039/d1an01160j] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Cell separation has consistently been a pivotal technology of sample preparation in biomedical research. Compared with conventional bulky cell separation technologies applied in the clinic, cell separation based on microfluidics can accurately manipulate the displacement of liquid or cells at the microscale, which has great potential in point-of-care testing (POCT) applications due to small device size, low cost, low sample consumption, and high operating accuracy. Among various microfluidic cell separation technologies, inertial microfluidics has attracted great attention due to its simple structure and high throughput. In recent years, many researchers have explored the principles and applications of inertial microfluidics and developed different channel structures, including straight channels, curved channels, and multistage channels. However, the recently developed multistage channels have not been discussed and classified in detail compared with more widely discussed straight and curved channels. Therefore, in this review, a comprehensive and detailed review of recent progress in the multistage channel is presented. According to the channel structure, the inertial microfluidic separation technology is divided into (i) straight channel, (ii) curved channel, (iii) composite channel, and (iv) integrated device. The structural development of straight and curved channels is discussed in detail. And based on straight and curved channels, the multistage cell separation structures are reviewed, with a special focus on a variety of latest structures and related innovations of composite and integrated channels. Finally, the future prospects for the existing challenges in the development of inertial microfluidic cell separation technology are presented.
Collapse
Affiliation(s)
- Xuefeng Xu
- Key Laboratory of RF Circuits and Systems, Ministry of Education, Hangzhou Dianzi University, Hangzhou 310018, China.
| | - Xiwei Huang
- Key Laboratory of RF Circuits and Systems, Ministry of Education, Hangzhou Dianzi University, Hangzhou 310018, China.
| | - Jingjing Sun
- Key Laboratory of RF Circuits and Systems, Ministry of Education, Hangzhou Dianzi University, Hangzhou 310018, China.
| | - Renjie Wang
- Key Laboratory of RF Circuits and Systems, Ministry of Education, Hangzhou Dianzi University, Hangzhou 310018, China.
| | - Jiangfan Yao
- Key Laboratory of RF Circuits and Systems, Ministry of Education, Hangzhou Dianzi University, Hangzhou 310018, China.
| | - Wentao Han
- Key Laboratory of RF Circuits and Systems, Ministry of Education, Hangzhou Dianzi University, Hangzhou 310018, China.
| | - Maoyu Wei
- Key Laboratory of RF Circuits and Systems, Ministry of Education, Hangzhou Dianzi University, Hangzhou 310018, China.
| | - Jin Chen
- Key Laboratory of RF Circuits and Systems, Ministry of Education, Hangzhou Dianzi University, Hangzhou 310018, China.
| | - Jinhong Guo
- School of Communication and Information Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Lingling Sun
- Key Laboratory of RF Circuits and Systems, Ministry of Education, Hangzhou Dianzi University, Hangzhou 310018, China.
| | - Ming Yin
- The Second Medical Center and National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing 100853, China.
| |
Collapse
|
12
|
Smith KJ, Jana JA, Kaehr A, Purcell E, Opdycke T, Paoletti C, Cooling L, Thamm DH, Hayes DF, Nagrath S. Inertial focusing of circulating tumor cells in whole blood at high flow rates using the microfluidic CTCKey™ device for CTC enrichment. LAB ON A CHIP 2021; 21:3559-3572. [PMID: 34320046 DOI: 10.1039/d1lc00546d] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Circulating tumor cells (CTCs) are extremely rare cells shed from tumors into the blood stream. These cells can provide valuable information about their tumor of origin and direct treatment decisions to improve patient outcomes. Current technologies isolate CTCs from a limited blood volume and often require pre-processing that leads to CTC loss, making it difficult to isolate enough CTCs to perform in-depth tumor analysis. Many inertial microfluidic devices have been developed to isolate CTCs at high flow rates, but they typically require either blood dilution, pre-processing to remove red blood cells, or a sheath buffer rather than being able to isolate cells directly from whole blood. To decrease the need for pre-processing while increasing CTC yield, we developed an inertial device, the CTCKey™, to focus CTCs in whole blood at high throughput yielding a concentrated product stream enriched for CTCs. The CTCKey™ consists of two sections to create CTC enriched blood that can be further processed using any CTC isolation device to selectively isolate the CTCs. A thorough analysis was performed using the MCF7 breast cancer cell line spiked into bovine serum albumin (BSA) solutions of varying concentrations, as well as whole blood to characterize the focusing patterns of the CTCKey™. At the optimal flow rate of 2.4 mL min-1, the CTCKey™ reduces the CTC containing blood volume by 78%; the CTCs from 1 mL of blood are now in 0.22 mL of blood. The CTCKey's™ ability to concentrate CTCs from a large original blood volume to a smaller, highly concentrated volume enables a much greater blood volume to be interrogated by downstream isolation and characterization methods despite their low volume input limitations.
Collapse
Affiliation(s)
- Kaylee Judith Smith
- Chemical Engineering, University of Michigan, 2800 Plymouth Rd., Ann Arbor, Michigan, USA.
| | | | - Anna Kaehr
- Chemical Engineering, University of Michigan, 2800 Plymouth Rd., Ann Arbor, Michigan, USA.
| | - Emma Purcell
- Chemical Engineering, University of Michigan, 2800 Plymouth Rd., Ann Arbor, Michigan, USA.
| | - Tyler Opdycke
- Chemical Engineering, University of Michigan, 2800 Plymouth Rd., Ann Arbor, Michigan, USA.
| | - Costanza Paoletti
- Department of Internal Medicine, University of Michigan Rogel Cancer Center, Ann Arbor, Michigan, USA
| | - Laura Cooling
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Douglas H Thamm
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Daniel F Hayes
- Department of Internal Medicine, University of Michigan Rogel Cancer Center, Ann Arbor, Michigan, USA
| | - Sunitha Nagrath
- Chemical Engineering, University of Michigan, 2800 Plymouth Rd., Ann Arbor, Michigan, USA.
- Department of Internal Medicine, University of Michigan Rogel Cancer Center, Ann Arbor, Michigan, USA
| |
Collapse
|
13
|
Combination of inertial focusing and magnetoporetic separation in a novel microdevice. KOREAN J CHEM ENG 2021. [DOI: 10.1007/s11814-021-0795-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
14
|
Rodriguez-Mateos P, Ngamsom B, Dyer CE, Iles A, Pamme N. Inertial focusing of microparticles, bacteria, and blood in serpentine glass channels. Electrophoresis 2021; 42:2246-2255. [PMID: 34031893 DOI: 10.1002/elps.202100083] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/11/2021] [Accepted: 05/18/2021] [Indexed: 11/08/2022]
Abstract
Early detection of pathogenic microorganisms is pivotal to diagnosis and prevention of health and safety crises. Standard methods for pathogen detection often rely on lengthy culturing procedures, confirmed by biochemical assays, leading to >24 h for a diagnosis. The main challenge for pathogen detection is their low concentration within complex matrices. Detection of blood-borne pathogens via techniques such as PCR requires an initial positive blood culture and removal of inhibitory blood components, reducing its potential as a diagnostic tool. Among different label-free microfluidic techniques, inertial focusing on microscale channels holds great promise for automation, parallelization, and passive continuous separation of particles and cells. This work presents inertial microfluidic manipulation of small particles and cells (1-10 μm) in curved serpentine glass channels etched at different depths (deep and shallow designs) that can be exploited for (1) bacteria preconcentration from biological samples and (2) bacteria-blood cell separation. In our shallow device, the ability to focus Escherichia coli into the channel side streams with high recovery (89% at 2.2× preconcentration factor) could be applied for bacteria preconcentration in urine for diagnosis of urinary tract infections. Relying on differential equilibrium positions of red blood cells and E. coli inside the deep device, 97% red blood cells were depleted from 1:50 diluted blood with 54% E. coli recovered at a throughput of 0.7 mL/min. Parallelization of such devices could process relevant volumes of 7 mL whole blood in 10 min, allowing faster sample preparation for downstream molecular diagnostics of bacteria present in bloodstream.
Collapse
Affiliation(s)
| | - Bongkot Ngamsom
- Department of Chemistry and Biochemistry, University of Hull, Hull, UK
| | | | - Alexander Iles
- Department of Chemistry and Biochemistry, University of Hull, Hull, UK
| | - Nicole Pamme
- Department of Chemistry and Biochemistry, University of Hull, Hull, UK
| |
Collapse
|
15
|
Lu X, Tayebi M, Ai Y. A low-cost and high-throughput benchtop cell sorter for isolating white blood cells from whole blood. Electrophoresis 2021; 42:2281-2292. [PMID: 34010478 DOI: 10.1002/elps.202100024] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 05/10/2021] [Accepted: 05/16/2021] [Indexed: 11/07/2022]
Abstract
The ability to isolate and purify white blood cells (WBCs) from mixed ensembles such as blood would benefit autologous cell-based therapeutics as well as diagnosis of WBC disorders. Current WBCs isolation methods have the limitations of low purity or requiring complex and expensive equipment. In addition, due to the overlap in size distribution between lymphocytes (i.e., a sub-population of WBCs) and red blood cells (RBCs), it is challenging to achieve isolation of entire WBCs populations. In this work, we developed an inertial microfluidics-based cell sorter, which enables size-based, high-throughput isolation, and enrichment of WBCs from RBC-lysed whole blood. Using the developed inertial microfluidic chip, the sorting resolution is sharpened within 2 μm, which achieved separation between 3 and 5 μm diameter particles. Thus, with the present cell sorter, a full population of WBCs can be isolated from RBC-lysed blood samples with recovery ratio of 92%, and merely 5% difference in the composition percentage of the three subpopulations of granulocytes, monocytes, and lymphocytes compared to the original sample. Furthermore, our cell sorter is designed to enable broad application of size-based inertial cell sorting by supplying a series of microchips with different sorting cutoff size. This strategy allows us to further enrich the lymphocytes population by twofold using another microchip with a cutoff size between 10 and 15 μm. With simplicity and efficiency, our cell sorter provides a powerful platform for isolating and sorting of WBCs and also envisions broad potential sorting applications for other cell types.
Collapse
Affiliation(s)
- Xiaoguang Lu
- Engineering Product Development, Singapore University of Technology and Design, Singapore
| | - Mahnoush Tayebi
- Engineering Product Development, Singapore University of Technology and Design, Singapore
| | - Ye Ai
- Engineering Product Development, Singapore University of Technology and Design, Singapore
| |
Collapse
|
16
|
|
17
|
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.
Collapse
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.
| | | | | | | | | | | |
Collapse
|
18
|
Nasiri R, Shamloo A, Ahadian S, Amirifar L, Akbari J, Goudie MJ, Lee K, Ashammakhi N, Dokmeci MR, Di Carlo D, Khademhosseini A. Microfluidic-Based Approaches in Targeted Cell/Particle Separation Based on Physical Properties: Fundamentals and Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2000171. [PMID: 32529791 DOI: 10.1002/smll.202000171] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 03/15/2020] [Indexed: 06/11/2023]
Abstract
Cell separation is a key step in many biomedical research areas including biotechnology, cancer research, regenerative medicine, and drug discovery. While conventional cell sorting approaches have led to high-efficiency sorting by exploiting the cell's specific properties, microfluidics has shown great promise in cell separation by exploiting different physical principles and using different properties of the cells. In particular, label-free cell separation techniques are highly recommended to minimize cell damage and avoid costly and labor-intensive steps of labeling molecular signatures of cells. In general, microfluidic-based cell sorting approaches can separate cells using "intrinsic" (e.g., fluid dynamic forces) versus "extrinsic" external forces (e.g., magnetic, electric field, etc.) and by using different properties of cells including size, density, deformability, shape, as well as electrical, magnetic, and compressibility/acoustic properties to select target cells from a heterogeneous cell population. In this work, principles and applications of the most commonly used label-free microfluidic-based cell separation methods are described. In particular, applications of microfluidic methods for the separation of circulating tumor cells, blood cells, immune cells, stem cells, and other biological cells are summarized. Computational approaches complementing such microfluidic methods are also explained. Finally, challenges and perspectives to further develop microfluidic-based cell separation methods are discussed.
Collapse
Affiliation(s)
- Rohollah Nasiri
- Center for Minimally Invasive Therapeutics (C-MIT), University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Department of Mechanical Engineering, Sharif University of Technology, Tehran, 11365-11155, Iran
| | - Amir Shamloo
- Department of Mechanical Engineering, Sharif University of Technology, Tehran, 11365-11155, Iran
| | - Samad Ahadian
- Center for Minimally Invasive Therapeutics (C-MIT), University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Terasaki Institute for Biomedical Innovation (TIBI), Los Angeles, CA, 90024, USA
| | - Leyla Amirifar
- Department of Mechanical Engineering, Sharif University of Technology, Tehran, 11365-11155, Iran
| | - Javad Akbari
- Department of Mechanical Engineering, Sharif University of Technology, Tehran, 11365-11155, Iran
| | - Marcus J Goudie
- Center for Minimally Invasive Therapeutics (C-MIT), University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - KangJu Lee
- Center for Minimally Invasive Therapeutics (C-MIT), University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Nureddin Ashammakhi
- Center for Minimally Invasive Therapeutics (C-MIT), University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Department of Radiological Sciences, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Mehmet R Dokmeci
- Center for Minimally Invasive Therapeutics (C-MIT), University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Terasaki Institute for Biomedical Innovation (TIBI), Los Angeles, CA, 90024, USA
- Department of Radiological Sciences, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Dino Di Carlo
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Ali Khademhosseini
- Center for Minimally Invasive Therapeutics (C-MIT), University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Terasaki Institute for Biomedical Innovation (TIBI), Los Angeles, CA, 90024, USA
- Department of Radiological Sciences, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| |
Collapse
|
19
|
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.
Collapse
|
20
|
Zhou J, Mukherjee P, Gao H, Luan Q, Papautsky I. Label-free microfluidic sorting of microparticles. APL Bioeng 2019; 3:041504. [PMID: 31832577 PMCID: PMC6906121 DOI: 10.1063/1.5120501] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 11/21/2019] [Indexed: 12/11/2022] Open
Abstract
Massive growth of the microfluidics field has triggered numerous advances in focusing, separating, ordering, concentrating, and mixing of microparticles. Microfluidic systems capable of performing these functions are rapidly finding applications in industrial, environmental, and biomedical fields. Passive and label-free methods are one of the major categories of such systems that have received enormous attention owing to device operational simplicity and low costs. With new platforms continuously being proposed, our aim here is to provide an updated overview of the state of the art for passive label-free microparticle separation, with emphasis on performance and operational conditions. In addition to the now common separation approaches using Newtonian flows, such as deterministic lateral displacement, pinched flow fractionation, cross-flow filtration, hydrodynamic filtration, and inertial microfluidics, we also discuss separation approaches using non-Newtonian, viscoelastic flow. We then highlight the newly emerging approach based on shear-induced diffusion, which enables direct processing of complex samples such as untreated whole blood. Finally, we hope that an improved understanding of label-free passive sorting approaches can lead to sophisticated and useful platforms toward automation in industrial, environmental, and biomedical fields.
Collapse
Affiliation(s)
- Jian Zhou
- Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois 60607, USA
| | - Prithviraj Mukherjee
- Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois 60607, USA
| | - Hua Gao
- Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois 60607, USA
| | - Qiyue Luan
- Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois 60607, USA
| | - Ian Papautsky
- Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois 60607, USA
| |
Collapse
|
21
|
Inertial Focusing and Separation of Particles in Similar Curved Channels. Sci Rep 2019; 9:16575. [PMID: 31719582 PMCID: PMC6851121 DOI: 10.1038/s41598-019-52983-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 10/26/2019] [Indexed: 01/27/2023] Open
Abstract
Inertial particle focusing in curved channels has enormous potential for lab-on-a-chip applications. This paper compares a zigzag channel, which has not been used previously for inertial focusing studies, with a serpentine channel and a square wave channel to explore their differences in terms of focusing performance and separation possibilities. The particle trajectories and fluid fields in the curved channels are studied by a numerical simulation. The effects of different conditions (structure, Reynolds number, and particle size) on the competition between forces and the focusing performance are studied. The results indicate that the zigzag channel has the best focusing effect at a high Reynolds number and that the serpentine channel is second in terms of performance. Regarding the particle separation potential, the zigzag channel has a good performance in separating 5 μm and 10 μm particles at ReC = 62.5. In addition, the pressure drop of the channel is also considered to evaluate the channel performance, which has not been taken into account in the literature on inertial microfluidics. This result is expected to be instructive for the selection and optimization of inertial microchannel structures.
Collapse
|
22
|
Rafeie M, Hosseinzadeh S, Taylor RA, Warkiani ME. New insights into the physics of inertial microfluidics in curved microchannels. I. Relaxing the fixed inflection point assumption. BIOMICROFLUIDICS 2019; 13:034117. [PMID: 31431813 PMCID: PMC6697030 DOI: 10.1063/1.5109004] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Accepted: 06/12/2019] [Indexed: 05/08/2023]
Abstract
Inertial microfluidics represents a powerful new tool for accurately positioning cells and microparticles within fluids for a variety of biomedical, clinical, and industrial applications. In spite of enormous advancements in the science and design of these devices, particularly in curved microfluidic channels, contradictory experimental results have confounded researchers and limited progress. Thus, at present, a complete theory which describes the underlying physics is lacking. We propose that this bottleneck is due to one simple mistaken assumption-the locations of inflection points of the Dean velocity profile in curved microchannels are not fixed, but can actually shift with the flow rate. Herein, we propose that the dynamic distance (δ) between the real equilibrium positions and their nearest inflection points can clearly explain several (previously) unexplained phenomena in inertial microfluidic systems. More interestingly, we found that this parameter, δ, is a function of several geometric and operational parameters, all of which are investigated (in detail) here with a series of experiments and simulations of different spiral microchannels. This key piece of understanding is expected to open the door for researchers to develop new and more effective inertial microfluidic designs.
Collapse
Affiliation(s)
- Mehdi Rafeie
- School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Shahin Hosseinzadeh
- School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia
| | | | | |
Collapse
|
23
|
Moloudi R, Oh S, Yang C, Teo KL, Lam ATL, Ebrahimi Warkiani M, Win Naing M. Scaled-Up Inertial Microfluidics: Retention System for Microcarrier-Based Suspension Cultures. Biotechnol J 2019; 14:e1800674. [PMID: 30791214 DOI: 10.1002/biot.201800674] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 12/23/2018] [Indexed: 01/09/2023]
Abstract
Recently, particle concentration and filtration using inertial microfluidics have drawn attention as an alternative to membrane and centrifugal technologies for industrial applications, where the target particle size varies between 1 µm and 500 µm. Inevitably, the bigger particle size (>50 µm) mandates scaling up the channel cross-section or hydraulic diameter (DH > 0.5 mm). The Dean-coupled inertial focusing dynamics in spiral microchannels is studied broadly; however, the impacts of secondary flow on particle migration in a scaled-up spiral channel is not fully elucidated. The mechanism of particle focusing inside scaled-up rectangular and trapezoidal spiral channels (i.e., 5-10× bigger than conventional microchannels) with an aim to develop a continuous and clog-free microfiltration system for bioprocessing is studied in detail. Herein, a unique focusing based on inflection point without the aid of sheath flow is reported. This new focusing mechanism, observed in the scaled-up channels, out-performs the conventional focusing scenarios in the previously reported trapezoidal and rectangular channels. Finally, as a proof-of-concept, the utility of this device is showcased for the first time as a retention system for a cell-microcarrier (MC) suspension culture.
Collapse
Affiliation(s)
- Reza Moloudi
- School of Mechanical and Aerospace Engineering, Nanyang Technological University (NTU), 50 Nanyang Avenue, Singapore, 639798.,Bio-Manufacturing Programme, Singapore Institute of Manufacturing Technology (SIMTech), Agency for Science, Technology and Research (A*STAR), Innovis, Singapore, 138634
| | - Steve Oh
- Stem Cell Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Centros, Singapore, 138668
| | - Chun Yang
- School of Mechanical and Aerospace Engineering, Nanyang Technological University (NTU), 50 Nanyang Avenue, Singapore, 639798
| | - Kim Leng Teo
- Stem Cell Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Centros, Singapore, 138668
| | - Alan Tin-Lun Lam
- Stem Cell Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Centros, Singapore, 138668
| | - Majid Ebrahimi Warkiani
- School of Biomedical Engineering, Center for Health Technologies, University of Technology Sydney, Ultimo, Sydney, NSW, 2007, Australia.,Institute of Molecular Medicine, Sechenov University, Moscow, Russia, 119146
| | - May Win Naing
- Bio-Manufacturing Programme, Singapore Institute of Manufacturing Technology (SIMTech), Agency for Science, Technology and Research (A*STAR), Innovis, Singapore, 138634
| |
Collapse
|
24
|
Ozbey A, Karimzadehkhouei M, Kocaturk NM, Bilir SE, Kutlu O, Gozuacik D, Kosar A. Inertial focusing of cancer cell lines in curvilinear microchannels. MICRO AND NANO ENGINEERING 2019. [DOI: 10.1016/j.mne.2019.01.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
25
|
Al-Halhouli A, Albagdady A, Dietzel A. Sheath-less high throughput inertial separation of small microparticles in spiral microchannels with trapezoidal cross-section. RSC Adv 2019; 9:41970-41976. [PMID: 35541623 PMCID: PMC9076541 DOI: 10.1039/c9ra05916d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 11/28/2019] [Indexed: 11/21/2022] Open
Abstract
Various mechanisms of different designs have emerged for the purpose of microparticle separation and cell sorting. The main goals behind such designs are to create high throughput and high purity sample isolation. In this study, high efficiency, high throughput and precise separation of microparticles under inertial lift and drag forces induced by trapezoidal curvilinear channels are reported. This work is the first to focus and recover 2 from 5 μm and 2 from 10 μm particles in spiral channels in a sheath-less flow device, which reduces the overall complexity of the system and allows for higher throughput. The new microfluidic chip design is fabricated in glass using femtosecond laser ablation. In addition, mathematical force calculations were conducted during the design phase of the microfluidic channels and compared with experiments. The results show a close prediction of the equilibrium position of the tested microparticles. This work is the first to focus and recover 2 from 5 μm and 2 from 10 μm particles in spiral channels in a sheath-less flow device, which reduces the overall complexity of the system and allows for higher throughput.![]()
Collapse
Affiliation(s)
| | - Ahmed Albagdady
- NanoLab
- School of Applied Technical Sciences
- German Jordanian University (GJU)
- Amman
- Jordan
| | - Andreas Dietzel
- Institut für Mikrotechnik
- Technische Universität Braunschweig
- Braunschweig
- Germany
| |
Collapse
|
26
|
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.
Collapse
|
27
|
Zhou Y, Ma Z, Ai Y. Sheathless inertial cell focusing and sorting with serial reverse wavy channel structures. MICROSYSTEMS & NANOENGINEERING 2018; 4:5. [PMID: 31057895 PMCID: PMC6220157 DOI: 10.1038/s41378-018-0005-6] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 12/18/2017] [Accepted: 12/25/2017] [Indexed: 05/22/2023]
Abstract
Inertial microfluidics utilizing passive hydrodynamic forces has been attracting significant attention in the field of precise microscale manipulation owing to its low cost, simplicity and high throughput. In this paper, we present a novel channel design with a series of reverse wavy channel structures for sheathless inertial particle focusing and cell sorting. A single wavy channel unit consists of four semicircular segments, which produce periodically reversed Dean secondary flow along the cross-section of the channel. The balance between the inertial lift force and the Dean drag force results in deterministic equilibrium focusing positions, which also depends on the size of the flow-through particles and cells. Six sizes of fluorescent microspheres (15, 10, 7, 5, 3 and 1 μm) were used to study the size-dependent inertial focusing behavior. Our novel design with sharp-turning subunits could effectively focus particles as small as 3 μm, the average size of platelets, enabling the sorting of cancer cells from whole blood without the use of sheath flows. Utilizing an optimized channel design, we demonstrated the size-based sorting of MCF-7 breast cancer cells spiked in diluted whole blood samples without using sheath flows. A single sorting process was able to recover 89.72% of MCF-7 cells from the original mixture and enrich MCF-7 cells from an original purity of 5.3% to 68.9% with excellent cell viability.
Collapse
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
| |
Collapse
|
28
|
Zhao C, Ge Z, Song Y, Yang C. Electrokinetically driven continuous-flow enrichment of colloidal particles by Joule heating induced temperature gradient focusing in a convergent-divergent microfluidic structure. Sci Rep 2017; 7:10803. [PMID: 28883550 PMCID: PMC5589950 DOI: 10.1038/s41598-017-11473-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 08/22/2017] [Indexed: 12/02/2022] Open
Abstract
Enrichment of colloidal particles in continuous flow has not only numerous applications but also poses a great challenge in controlling physical forces that are required for achieving particle enrichment. Here, we for the first time experimentally demonstrate the electrokinetically-driven continuous-flow enrichment of colloidal particles with Joule heating induced temperature gradient focusing (TGF) in a microfluidic convergent-divergent structure. We consider four mechanisms of particle transport, i.e., advection due to electroosmosis, electrophoresis, dielectrophoresis and, and further clarify their roles in the particle enrichment. It is experimentally determined and numerically verified that the particle thermophoresis plays dominant roles in enrichment of all particle sizes considered in this study and the combined effect of electroosmosis-induced advection and electrophoresis is mainly to transport particles to the zone of enrichment. Specifically, the enrichment of particles is achieved with combined DC and AC voltages rather than a sole DC or AC voltage. A numerical model is formulated with consideration of the abovementioned four mechanisms, and the model can rationalize the experimental observations. Particularly, our analysis of numerical and experimental results indicates that thermophoresis which is usually an overlooked mechanism of material transport is crucial for the successful electrokinetic enrichment of particles with Joule heating induced TGF.
Collapse
Affiliation(s)
- Cunlu Zhao
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Zhengwei Ge
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Yongxin Song
- Department of Marine Engineering, Dalian Maritime University, 1 Linghai Road, Dalian, 116026, China
| | - Chun Yang
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
| |
Collapse
|