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Al-aqbi ZT, Albukhaty S, Zarzoor AM, Sulaiman GM, Khalil KAA, Belali T, Soliman MTA. A Novel Microfluidic Device for Blood Plasma Filtration. MICROMACHINES 2021; 12:336. [PMID: 33810143 PMCID: PMC8004888 DOI: 10.3390/mi12030336] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/18/2021] [Accepted: 03/19/2021] [Indexed: 12/28/2022]
Abstract
The use of whole blood and some biological specimens, such as urine, saliva, and seminal fluid are limited in clinical laboratory analysis due to the interference of proteins with other small molecules in the matrix and blood cells with optical detection methods. Previously, we developed a microfluidic device featuring an electrokinetic size and mobility trap (SMT) for on-chip extract, concentrate, and separate small molecules from a biological sample like whole blood. The device was used to on-chip filtrate the whole blood from the blood cells and plasma proteins and then on-chip extract and separate the aminoglycoside antibiotic drugs within 3 min. Herein, a novel microfluidic device featuring a nano-junction similar to those reported in the previous work formed by dielectric breakdown was developed for on-chip filtration and out-chip collection of blood plasma with a high extraction yield of 62% within less than 5 min. The filtered plasma was analyzed using our previous device to show the ability of this new device to remove blood cells and plasma proteins. The filtration device shows a high yield of plasma allowing it to detect a low concentration of analytes from the whole blood.
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Affiliation(s)
- Zaidon T. Al-aqbi
- College of Agriculture, University of Misan, Al-Amara, Misan 62001, Iraq
| | - Salim Albukhaty
- Department of Chemistry, College of Science, University of Misan, Maysan 62001, Iraq
| | | | - Ghassan M. Sulaiman
- Department of Applied Sciences, University of Technology, Baghdad 10066, Iraq;
| | - Khalil A. A. Khalil
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, University of Bisha, 255, Al Nakhil, Bisha 67714, Saudi Arabia; (K.A.A.K.); (T.B.); (M.T.A.S.)
- Department of Medical Laboratory Sciences, Faculty of Medicine and Health Sciences, University of Hodeidah, Hodeidah 3114, Yemen
| | - Tareg Belali
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, University of Bisha, 255, Al Nakhil, Bisha 67714, Saudi Arabia; (K.A.A.K.); (T.B.); (M.T.A.S.)
| | - Mohamed T. A. Soliman
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, University of Bisha, 255, Al Nakhil, Bisha 67714, Saudi Arabia; (K.A.A.K.); (T.B.); (M.T.A.S.)
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Hauser J, Lenk G, Ullah S, Beck O, Stemme G, Roxhed N. An Autonomous Microfluidic Device for Generating Volume-Defined Dried Plasma Spots. Anal Chem 2019; 91:7125-7130. [DOI: 10.1021/acs.analchem.9b00204] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Janosch Hauser
- Department of Micro and Nanosystems, KTH Royal Institute of Technology, 10044 Stockholm, Sweden
| | - Gabriel Lenk
- Department of Micro and Nanosystems, KTH Royal Institute of Technology, 10044 Stockholm, Sweden
| | - Shahid Ullah
- Clinical Pharmacology, Karolinska University Hospital, 11486 Stockholm, Sweden
| | - Olof Beck
- Clinical Pharmacology, Karolinska University Hospital, 11486 Stockholm, Sweden
| | - Göran Stemme
- Department of Micro and Nanosystems, KTH Royal Institute of Technology, 10044 Stockholm, Sweden
| | - Niclas Roxhed
- Department of Micro and Nanosystems, KTH Royal Institute of Technology, 10044 Stockholm, Sweden
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Hauser J, Lenk G, Hansson J, Beck O, Stemme G, Roxhed N. High-Yield Passive Plasma Filtration from Human Finger Prick Blood. Anal Chem 2018; 90:13393-13399. [PMID: 30379058 DOI: 10.1021/acs.analchem.8b03175] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Whole-blood microsampling provides many benefits such as remote, patient-centric, and minimally invasive sampling. However, blood plasma, and not whole blood, is the prevailing matrix in clinical laboratory investigations. The challenge with plasma microsampling is to extract plasma volumes large enough to reliably detect low-concentration analytes from a small finger prick sample. Here we introduce a passive plasma filtration device that provides a high extraction yield of 65%, filtering 18 μL of plasma from 50 μL of undiluted human whole blood (hematocrit 45%) within less than 10 min. The enabling design element is a wedge-shaped connection between the blood filter and the hydrophilic bottom surface of a capillary channel. Using finger prick and venous blood samples from more than 10 healthy volunteers, we examined the filtration kinetics of the device over a hematocrit range of 35-55% and showed that 73 ± 8% of the total protein content was successfully recovered after filtration. The presented plasma filtration device tackles a major challenge toward patient-centric blood microsampling by providing high-yield plasma filtration, potentially allowing reliable detection of low-concentration analytes from a blood microsample.
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Affiliation(s)
- Janosch Hauser
- Department for Micro and Nanosystems , KTH Royal Institute of Technology , 10044 Stockholm , Sweden
| | - Gabriel Lenk
- Department for Micro and Nanosystems , KTH Royal Institute of Technology , 10044 Stockholm , Sweden
| | - Jonas Hansson
- Department for Micro and Nanosystems , KTH Royal Institute of Technology , 10044 Stockholm , Sweden
| | - Olof Beck
- Department of Laboratory Medicine , Karolinska Institute , 14186 Stockholm , Sweden
| | - Göran Stemme
- Department for Micro and Nanosystems , KTH Royal Institute of Technology , 10044 Stockholm , Sweden
| | - Niclas Roxhed
- Department for Micro and Nanosystems , KTH Royal Institute of Technology , 10044 Stockholm , Sweden
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Liu Y, Li G. A power-free, parallel loading microfluidic reactor array for biochemical screening. Sci Rep 2018; 8:13664. [PMID: 30209328 PMCID: PMC6135844 DOI: 10.1038/s41598-018-31720-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 08/24/2018] [Indexed: 12/25/2022] Open
Abstract
This paper presents a power-free, self-contained microfluidic device in which a number of nanoliter-sized droplets can be parallelly and accurately metered and mixed for high-throughput analysis and/or portable systems. In this system, the absorption of air by pre-degassed PDMS and the change of capillary force due to sudden narrowing of the channel cross-section provide the mechanism for actuating, metering and mixing the flow of fluid in the microfluidic channels and chambers. With an array of channels and capillary valves combined with an array of pre-degassed PDMS pump chambers, the device can perform multiple liquid dispensing and mixing in parallel, and its performance and reproducibility are also evaluated. As a practical application, the proposed device is used to screen crystallization conditions of lysozyme. This device needs neither external power nor complex instruments for fluid handling. Thus, it offers an easy-to-use, inexpensive and power-free way to perform multiple nanoliter-volume distinct reactions in parallel format and should be ideally suitable for individual laboratories for various applications such as enzyme assay, protein crystallization, drug discovery, and combinatorial chemistry.
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Affiliation(s)
- Yanwu Liu
- College of Stomatology, Chongqing Medical University, Chongqing, 401147, China
| | - Gang Li
- Defense Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Chongqing University, Chongqing, 400044, China.
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Wang P, Jing F, Li G, Wu Z, Cheng Z, Zhang J, Zhang H, Jia C, Jin Q, Mao H, Zhao J. Absolute quantification of lung cancer related microRNA by droplet digital PCR. Biosens Bioelectron 2015; 74:836-42. [PMID: 26232679 DOI: 10.1016/j.bios.2015.07.048] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 07/20/2015] [Accepted: 07/21/2015] [Indexed: 11/16/2022]
Abstract
Digital polymerase chain reaction (digital PCR) enables the absolute quantification of nucleic acids through the counting of single molecules, thus eliminating the need for standard curves or endogenous controls. In this study, we developed a droplet digital PCR (ddPCR) system based on an oil saturated PDMS (OSP) microfluidic chip platform for quantification of lung cancer related microRNA (miRNA). The OSP chip was made with PDMS and was oil saturated to constrain oil swallow and maintain the stability of droplets. Two inlets were designed for oil and sample injection with a syringe pump at the outlet. Highly uniform monodisperse water-in-oil emulsion droplets to be used for subsequent detection and analysis were generated at the cross section of the channel. We compared miRNA quantification by the ddPCR system and quantitative real-time PCR (qPCR) to demonstrate that the ddPCR system was superior to qPCR both in its detection limit and smaller fold changes measurement. This droplet PCR system provides new possibilities for highly sensitive and efficient detection of cancer-related genes.
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Affiliation(s)
- Ping Wang
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 200050, China; University of Chinese Academy of Sciences, Beijing 100039, China
| | - Fengxiang Jing
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 200050, China
| | - Gang Li
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 200050, China; School of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
| | - Zhenhua Wu
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 200050, China; University of Chinese Academy of Sciences, Beijing 100039, China
| | - Zule Cheng
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 200050, China; University of Chinese Academy of Sciences, Beijing 100039, China
| | - Jishen Zhang
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 200050, China
| | - Honglian Zhang
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 200050, China
| | - Chunping Jia
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 200050, China
| | - Qinghui Jin
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 200050, China
| | - Hongju Mao
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 200050, China.
| | - Jianlong Zhao
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 200050, China.
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Wang YN, Tsai CH, Fu LM, Lin Liou LK. Microfluidic rectifier based on poly(dimethylsiloxane) membrane and its application to a micropump. BIOMICROFLUIDICS 2013; 7:44118. [PMID: 24404051 PMCID: PMC3758359 DOI: 10.1063/1.4818905] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Accepted: 08/06/2013] [Indexed: 05/07/2023]
Abstract
A microfluidic rectifier incorporating an obstructed microchannel and a PDMS membrane is proposed. During forward flow, the membrane deflects in the upward direction; thereby allowing the fluid to pass over the obstacle. Conversely, during reverse flow, the membrane seals against the obstacle, thereby closing the channel and preventing flow. It is shown that the proposed device can operate over a wide pressure range by increasing or decreasing the membrane thickness as required. A microfluidic pump is realized by integrating the rectifier with a simple stepper motor mechanism. The experimental results show that the pump can achieve a vertical left height of more than 2 m. Moreover, it is shown that a maximum flow rate of 6.3 ml/min can be obtained given a membrane thickness of 200 μm and a motor velocity of 80 rpm. In other words, the proposed microfluidic rectifier not only provides an effective means of preventing reverse flow but also permits the realization of a highly efficient microfluidic pump.
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Affiliation(s)
- Yao-Nan Wang
- Department of Vehicle Engineering, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
| | - Chien-Hsiung Tsai
- Department of Vehicle Engineering, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
| | - Lung-Ming Fu
- Graduate Institute of Materials Engineering, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
| | - Lung-Kai Lin Liou
- Graduate Institute of Materials Engineering, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
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