1
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Zhang J, Zheng T, Tang L, Qi H, Wu X, Zhu L. Bubble-Enhanced Mixing Induced by Standing Surface Acoustic Waves (SSAWs) in Microchannel. MICROMACHINES 2022; 13:mi13081337. [PMID: 36014259 PMCID: PMC9414155 DOI: 10.3390/mi13081337] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/08/2022] [Accepted: 08/15/2022] [Indexed: 05/21/2023]
Abstract
BAW-based micromixers usually achieve mixing enhancement with acoustic-induced bubbles, while SAW-based micromixers usually enhance mixing efficiency by varying the configuration of IDTs and microchannels. In this paper, bubble-enhanced acoustic mixing induced by standing surface acoustic waves (SSAWs) in a microchannel is proposed and experimentally demonstrated. Significant enhancement in the mixing efficiency was achieved after the bubbles were stimulated in our acoustofluidic microdevice. With an applied voltage of 5 V, 50 times amplified, the proposed mixing microdevice could achieve 90.8% mixing efficiency within 60 s at a flow rate of 240 μL/h. The bubbles were generated from acoustic cavitation assisted by the temperature increase resulting from the viscous absorption of acoustic energy. Our results also suggest that a temperature increase is harmful to microfluidic devices and temperature monitoring. Regulation is essential, especially in chemical and biological applications.
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Affiliation(s)
- Jingjing Zhang
- School of Mechatronics Engineering, Xi’an Technological University, Xi’an 710021, China
- Correspondence:
| | - Tengfei Zheng
- State Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong University, Xi’an 710049, China
- Shaanxi Key Laboratory of Intelligent Robots, Xi’an Jiaotong University, Xi’an 710049, China
| | - Lin Tang
- School of Mechatronics Engineering, Xi’an Technological University, Xi’an 710021, China
| | - Hui Qi
- School of Mechatronics Engineering, Xi’an Technological University, Xi’an 710021, China
| | - Xiaoyu Wu
- School of Mechatronics Engineering, Xi’an Technological University, Xi’an 710021, China
| | - Linlong Zhu
- School of Mechatronics Engineering, Xi’an Technological University, Xi’an 710021, China
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2
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Li X, Yang Y, Villareal SC, Griffin K, Pappas D. High-recovery sorting of cancer cells from whole blood via periodic-focusing inertial microchip. Analyst 2022; 147:4536-4546. [DOI: 10.1039/d2an01310j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Inertial microfluidic devices continue to show promise for label-free separation of cells from liquid biopsies and other biological samples.
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Affiliation(s)
- Xiao Li
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, 79409, USA
| | - Yijia Yang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, 79409, USA
| | - Sarah C. Villareal
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, 79409, USA
| | - Kitiara Griffin
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, 79409, USA
| | - Dimitri Pappas
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, 79409, USA
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3
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Zhang Y, Li Y, Tan Z. A review of enrichment methods for circulating tumor cells: from single modality to hybrid modality. Analyst 2021; 146:7048-7069. [PMID: 34709247 DOI: 10.1039/d1an01422f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Circulating tumor cell (CTC) analysis as a liquid biopsy can be used for early diagnosis of cancer, evaluating cancer progression, and assessing treatment efficacy. The enrichment of CTCs from patient blood is important for CTC analysis due to the extreme rarity of CTCs. This paper updates recent advances in CTC enrichment methods. We first review single-modality methods, including biophysical and biochemical methods. Hybrid-modality methods, combining at least two single-modality methods, are gaining increasing popularity for their improved performance. Then this paper reviews hybrid-modality methods, which are categorized into integrated and sequenced hybrid-modality methods. The state of the art indicates that the CTC capture efficiencies of integrated hybrid-modality methods can reach 85% or higher by taking advantage of the superimposed and enhanced capture effects from multiple single-modality methods. Moreover, a hybrid method integrating biophysical with biochemical methods is characterized by both high processing rate and high specificity.
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Affiliation(s)
- Yi Zhang
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada N2L 3G1.
| | - Yifu Li
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada N2L 3G1.
| | - Zhongchao Tan
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada N2L 3G1.
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4
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Kang Y, Niu Z, Hadlock T, Purcell E, Lo T, Zeinali M, Owen S, Keshamouni VG, Reddy R, Ramnath N, Nagrath S. On-Chip Biogenesis of Circulating NK Cell-Derived Exosomes in Non-Small Cell Lung Cancer Exhibits Antitumoral Activity. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2003747. [PMID: 33747745 PMCID: PMC7967048 DOI: 10.1002/advs.202003747] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/14/2020] [Indexed: 05/19/2023]
Abstract
As the recognition between natural killer (NK) cells and cancer cells does not require antigen presentation, NK cells are being actively studied for use in adoptive cell therapies in the rapidly evolving armamentarium of cancer immunotherapy. In addition to utilizing NK cells, recent studies have shown that exosomes derived from NK cells also exhibit antitumor properties. Furthermore, these NK cell-derived exosomes exhibit higher stability, greater modification potentials and less immunogenicity compared to NK cells. Therefore, technologies that allow highly sensitive and specific isolation of NK cells and NK cell-derived exosomes can enable personalized NK-mediated cancer therapeutics in the future. Here, a novel microfluidic system to collect patient-specific NK cells and on-chip biogenesis of NK-exosomes is proposed. In a small cohort of non-small cell lung cancer (NSCLC) patients, both NK cells and circulating tumor cells (CTCs) were isolated, and it is found NSCLC patients have high numbers of NK and NK-exosomes compared with healthy donors, and these concentrations show a trend of positive and negative correlations with bloodborne CTC numbers, respectively. It is further demonstrated that the NK-exosomes harvested from NK-graphene oxide chip exhibit cytotoxic effect on CTCs. This versatile system is expected to be used for patient-specific NK-based immunotherapies along with CTCs for potential prognostic/diagnostic applications.
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Affiliation(s)
- Yoon‐Tae Kang
- Department of Chemical EngineeringBiointerfaces InstituteUniversity of MichiganAnn ArborMI48109USA
| | - Zeqi Niu
- Department of Chemical EngineeringBiointerfaces InstituteUniversity of MichiganAnn ArborMI48109USA
| | - Thomas Hadlock
- Department of Chemical EngineeringBiointerfaces InstituteUniversity of MichiganAnn ArborMI48109USA
| | - Emma Purcell
- Department of Chemical EngineeringBiointerfaces InstituteUniversity of MichiganAnn ArborMI48109USA
| | - Ting‐Wen Lo
- Department of Chemical EngineeringBiointerfaces InstituteUniversity of MichiganAnn ArborMI48109USA
| | - Mina Zeinali
- Department of Chemical EngineeringBiointerfaces InstituteUniversity of MichiganAnn ArborMI48109USA
| | - Sarah Owen
- Department of Chemical EngineeringBiointerfaces InstituteUniversity of MichiganAnn ArborMI48109USA
| | | | - Rishindra Reddy
- Michigan Medicine Thoracic Surgery ClinicTaubman Center1500E Medical Center Dr. SPC 5344Ann ArborMI48109USA
| | - Nithya Ramnath
- Department of Internal MedicineUniversity of MichiganAnn ArborMI48109USA
| | - Sunitha Nagrath
- Department of Chemical EngineeringBiointerfaces InstituteUniversity of MichiganAnn ArborMI48109USA
- Rogel Cancer CenterUniversity of Michigan1500 East Medical Center DriveAnn ArborMI48109USA
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5
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Chen H, Li Y, Zhang Z, Wang S. Immunomagnetic separation of circulating tumor cells with microfluidic chips and their clinical applications. BIOMICROFLUIDICS 2020; 14:041502. [PMID: 32849973 PMCID: PMC7440929 DOI: 10.1063/5.0005373] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 08/04/2020] [Indexed: 06/11/2023]
Abstract
Circulating tumor cells (CTCs) are tumor cells detached from the original lesion and getting into the blood and lymphatic circulation systems. They potentially establish new tumors in remote areas, namely, metastasis. Isolation of CTCs and following biological molecular analysis facilitate investigating cancer and coming out treatment. Since CTCs carry important information on the primary tumor, they are vital in exploring the mechanism of cancer, metastasis, and diagnosis. However, CTCs are very difficult to separate due to their extreme heterogeneity and rarity in blood. Recently, advanced technologies, such as nanosurfaces, quantum dots, and Raman spectroscopy, have been integrated with microfluidic chips. These achievements enable the next generation isolation technologies and subsequent biological analysis of CTCs. In this review, we summarize CTCs' separation with microfluidic chips based on the principle of immunomagnetic isolation of CTCs. Fundamental insights, clinical applications, and potential future directions are discussed.
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Affiliation(s)
- Hongmei Chen
- School of Mathematics and Physics of Science and Engineering, Anhui University of Technology, Maanshan 243002, China
| | - Yong Li
- School of Mathematics and Physics of Science and Engineering, Anhui University of Technology, Maanshan 243002, China
| | - Zhifeng Zhang
- Department of Engineering Science and Mechanics, The Pennsylvania State University, State College, Pennsylvania 16802, USA
| | - Shuangshou Wang
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243002, China
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6
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Chen H. Capturing and Clinical Applications of Circulating Tumor Cells with Wave Microfluidic Chip. Appl Biochem Biotechnol 2019; 190:1470-1483. [DOI: 10.1007/s12010-019-03199-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Accepted: 10/23/2019] [Indexed: 12/16/2022]
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7
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Tang M, Xia HF, Xu CM, Feng J, Ren JG, Miao F, Wu M, Wu LL, Pang DW, Chen G, Zhang ZL. Magnetic Chip Based Extracorporeal Circulation: A New Tool for Circulating Tumor Cell in Vivo Detection. Anal Chem 2019; 91:15260-15266. [PMID: 31692331 DOI: 10.1021/acs.analchem.9b04286] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In vivo detection of circulating tumor cells (CTCs) which inspect all of the circulating blood in body seems to have more advantages on cell capture, especially in earlier cancer diagnosis. Herein, based on in vivo microfluidic chip detection system (IV-chip-system), an extracorporeal circulation was constructed to effectively detect and monitor CTCs in vivo. Combined with microfluidic chip and immunomagnetic nanosphere (IMN), this system not only acts as a window for CTC monitoring but also serves as a collector for further cancer diagnosis and research on CTCs. Compared with the current in vivo detection method, this system can capture and detect CTCs in the bloodstream without any pretreatments, and it also has a higher CTC capture efficiency. It is worth mentioning that this system is stable and biocompatible without any irreversible damage to living animals. Taking use of this system, the mimicked CTC cleanup process in the blood vessel is monitored, which may open new insights in cancer research and early cancer diagnosis.
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Affiliation(s)
- Man Tang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , People's Republic of China
| | - Hou-Fu Xia
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology , Wuhan University , Wuhan 430079 , People's Republic of China
| | - Chun-Miao Xu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , People's Republic of China
| | - Jiao Feng
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , People's Republic of China
| | - Jian-Gang Ren
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology , Wuhan University , Wuhan 430079 , People's Republic of China
| | - Fan Miao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology , Wuhan University , Wuhan 430079 , People's Republic of China
| | - Min Wu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , People's Republic of China
| | - Ling-Ling Wu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , People's Republic of China
| | - Dai-Wen Pang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , People's Republic of China
| | - Gang Chen
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology , Wuhan University , Wuhan 430079 , People's Republic of China
| | - Zhi-Ling Zhang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , People's Republic of China
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8
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Mi S, Yang S, Liu T, Du Z, Xu Y, Li B, Sun W. A Novel Controllable Cell Array Printing Technique on Microfluidic Chips. IEEE Trans Biomed Eng 2019; 66:2512-2520. [DOI: 10.1109/tbme.2019.2891016] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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9
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Three-Dimensional Modeling of Avascular Tumor Growth in Both Static and Dynamic Culture Platforms. MICROMACHINES 2019; 10:mi10090580. [PMID: 31480431 PMCID: PMC6780963 DOI: 10.3390/mi10090580] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 08/16/2019] [Accepted: 08/28/2019] [Indexed: 02/07/2023]
Abstract
Microfluidic cell culture platforms are ideal candidates for modeling the native tumor microenvironment because they can precisely reconstruct in vivo cellular behavior. Moreover, mathematical modeling of tumor growth can pave the way toward description and prediction of growth pattern as well as improving cancer treatment. In this study, a modified mathematical model based on concentration distribution is applied to tumor growth in both conventional static culture and dynamic microfluidic cell culture systems. Apoptosis and necrosis mechanisms are considered as the main inhibitory factors in the model, while tumor growth rate and nutrient consumption rate are modified in both quiescent and proliferative zones. We show that such modification can better predict the experimental results of tumor growth reported in the literature. Using numerical simulations, the effects of the concentrations of the nutrients as well as the initial tumor radius on the tumor growth are investigated and discussed. Furthermore, tumor growth is simulated by taking into account the dynamic perfusion into the proposed model. Subsequently, tumor growth kinetics in a three-dimensional (3D) microfluidic device containing a U-shaped barrier is numerically studied. For this case, the effect of the flow rate of culture medium on tumor growth is investigated as well. Finally, to evaluate the impact of the trap geometry on the tumor growth, a comparison is made between the tumor growth kinetics in two frequently used traps in microfluidic cell culture systems, i.e., the U-shaped barrier and microwell structures. The proposed model can provide insight into better predicting the growth and development of avascular tumor in both static and dynamic cell culture platforms.
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10
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He W, Hou M, Zhang H, Zeng C, He S, Chen X, Xu M, Sun C, Jiang W, Wang H, Shen H, Zhang Y, Liu J, Sun S, Jiang N, Cui Y, Sun Y, Chen Y, Cao J, Wang C, Li M, Zhang Y, Wang L, Wang J, Lin M, Ke Z. Clinical significance of circulating tumor cells in predicting disease progression and chemotherapy resistance in patients with gestational choriocarcinoma. Int J Cancer 2018; 144:1421-1431. [PMID: 30070688 PMCID: PMC6587450 DOI: 10.1002/ijc.31742] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 05/28/2018] [Accepted: 06/20/2018] [Indexed: 12/22/2022]
Abstract
Gestational choriocarcinoma (GC) is a highly aggressive tumor. In our study, we systematically investigated EpCAM/CD147 expression characteristics in patients with GC and assessed the role of circulating tumor cells (CTCs) in predicting chemotherapy response and disease progression. GC tissues were positive for either epithelial cellular adhesion molecule (EpCAM) or CD147, and all samples exhibited strong human chorionic gonadotropin (HCG) expression. Among all the recruited patients (n = 115), 103 had at least 1 CTC in a 7.5‐mL peripheral blood sample, and the percentage of patients with ≥4 CTCs in a particular FIGO stage group increased with a higher FIGO stage (p < 0.001). Furthermore, the pretreatment CTC count was related to tumor size (r = 0.225, p = 0.015) and the number of metastases (r = 0.603, p < 0.001). A progression analysis showed that among the 115 included patients who qualified for further examination, 52 of the 64 patients defined as progressive had ≥4 pretreatment CTCs, while only 7 of the 51 non‐progressive patients had ≥4 pretreatment CTCs (p < 0.001). In multivariate analysis, CTCs (≥4) remained the strongest predictor of PFS when other prognostic markers, FIGO score and FIGO stage were included. Moreover, based on the chemotherapy response, patients with ≥4 CTCs were more likely to be resistant to chemotherapy than those with <4 CTCs (P < 0.001). These findings demonstrates the feasibility of CTC detection in cases of GC by adopting EpCAM/CD147 antibodies together as capturing antibodies. The CTC count is a promising indicator in the evaluation of biological activities and the chemotherapy response in GC patients. What's new? Gestational choriocarcinoma tumor cells tend to spread to distant organs by hematogenous dissemination. This study shows that circulating tumor cells (CTCs) in patients with gestational choriocarcinomas can be readily captured by targeting the highly expressed membrane antigens EpCAM and CD147. Elevated CTC levels, defined as 4 or more CTCs per 7.5 ml of peripheral blood, were found to predict chemotherapy resistance and to more effectively predict disease progression where compared with traditional β‐human chorionic gonadotropin. The findings suggest that CTC enumeration could be used to stratify gestational choriocarcinoma patients for personalized clinical intervention.
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Affiliation(s)
- Weiling He
- Department of Pathology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China.,Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Minzhi Hou
- Department of Gynecology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China.,Department of Gynecology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Hui Zhang
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Chao Zeng
- Department of Pathology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China.,Department of Pathology, Guangdong Medical College, Dongguan, Guangdong, People's Republic of China
| | - Shanyang He
- Department of Gynecology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Xinlin Chen
- School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, People's Republic of China
| | - Manman Xu
- Department of Gynecology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Cong Sun
- Department of Pathology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Wenting Jiang
- Department of Pathology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Han Wang
- Department of Pathology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Hongwei Shen
- Department of Gynecology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Yang Zhang
- Biomedical Engineering, The University of Texas at El Paso, El Paso, TX
| | - Jing Liu
- Department of Anesthesiology, Guangdong Women and Children Hospital, Guangzhou, Guangdong, People's Republic of China
| | - Shijun Sun
- Molecular Diagnosis Center, The Affiliated Zhongshan Hospital, Sun Yat-Sen University, Zhongshan, Guangdong, People's Republic of China
| | - Neng Jiang
- Department of Pathology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Yongmei Cui
- Department of Pathology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Yu Sun
- Department of Pathology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Yangshan Chen
- Department of Pathology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Jessica Cao
- Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | | | - Mengzhen Li
- MyGene Diagnostics, Guangzhou International Biotech Island, Guangdong, People's Republic of China
| | - Yi Zhang
- Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Liantang Wang
- Department of Pathology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Jianhong Wang
- Pricision Medicine Center, Shenzhen People's Hospital, Shenzhen, Guangdong, People's Republic of China
| | - Millicent Lin
- Department of Genetics, Harvard Medical School, Boston, MA
| | - Zunfu Ke
- Department of Pathology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
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11
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Amar LI, Guisado D, Faria M, Jones JP, van Rijn CJM, Hill MI, Leonard EF. Erythrocyte fouling on micro-engineered membranes. Biomed Microdevices 2018; 20:55. [PMID: 29971550 DOI: 10.1007/s10544-018-0297-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Crossflow microfiltration of plasma from blood through microsieves in a microchannel is potentially useful in many biomedical applications, including clinically as a wearable water removal device under development by the authors. We report experiments that correlate filtration rates, transmembrane pressures (TMP) and shear rates during filtration through a microscopically high channel bounded by a low intrinsic resistance photolithographically-produced porous semiconductor membrane. These experiments allowed observation of erythrocyte behavior at the filtering surface and showed how their unique deformability properties dominated filtration resistance. At low filtration rates (corresponding to low TMP), they rolled along the filter surface, but at higher filtration rates (corresponding to higher TMP), they anchored themselves to the filter membrane, forming a self-assembled, incomplete monolayer. The incompleteness of the layer was an essential feature of the monolayer's ability to support sustainable filtration. Maximum steady-state filtration flux was a function of wall shear rate, as predicted by conventional crossflow filtration theory, but, contrary to theories based on convective diffusion, showed weak dependence of filtration on erythrocyte concentration. Post-filtration scanning electron micrographs revealed significant capture and deformation of erythrocytes in all filter pores in the range 0.25 to 2 μm diameter. We report filtration rates through these filters and describe a largely unrecognized mechanism that allows stable filtration in the presence of substantial cell layers.
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Affiliation(s)
- Levy I Amar
- Department of Biomedical Engineering, Columbia University, New York, NY, 10027, USA.
| | - Daniela Guisado
- Department of Chemical Engineering, Columbia University, New York, NY, 10027, USA
| | - Monica Faria
- Department of Chemical Engineering, Columbia University, New York, NY, 10027, USA
| | - James P Jones
- Department of Nephrology, Mount Sinai St. Luke's Roosevelt Hospital, New York, NY, 10025, USA
| | - Cees J M van Rijn
- MicroFluidics and NanoTechnology/ORC, Wageningen University Stippeneng, Wageningen, 6708, WE, The Netherlands
| | - Michael I Hill
- Department of Chemical Engineering, Columbia University, New York, NY, 10027, USA
| | - Edward F Leonard
- Department of Biomedical Engineering, Columbia University, New York, NY, 10027, USA.,Department of Chemical Engineering, Columbia University, New York, NY, 10027, USA
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