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Zhang L, Yue X, Li N, Shi H, Zhang J, Zhang Z, Dang F. One-step maltose-functionalization of magnetic nanoparticles based on self-assembled oligopeptides for selective enrichment of glycopeptides. Anal Chim Acta 2019; 1088:63-71. [DOI: 10.1016/j.aca.2019.08.040] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 08/14/2019] [Accepted: 08/19/2019] [Indexed: 01/19/2023]
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Kim YT, Bohjanen S, Bhattacharjee N, Folch A. Partitioning of hydrogels in 3D-printed microchannels. LAB ON A CHIP 2019; 19:3086-3093. [PMID: 31502633 PMCID: PMC8806468 DOI: 10.1039/c9lc00535h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Hydrogels allow for controlling the diffusion rate and amount of solute according to the hydrogel network and thus have found many applications in drug delivery, biomaterials, toxicology, and tissue engineering. This paper describes a 3D-printed microfluidic chip for the straightforward partitioning of hydrogel barriers between microchannels. We use a previously-reported 3-channel architecture whereby the middle channel is filled with a hydrogel - acting like a porous barrier for diffusive transport - and the two side channels act as sink and source; the middle channel communicates with the side channels via orthogonal, small capillary channels that are also responsible for partitioning the hydrogel during filling. Our 3D-printed microfluidic chip is simple to fabricate by stereolithography (SL), inexpensive, reproducible, and convenient, so it is more adequate for transport studies than a microchip fabricated by photolithographic procedures. The chip was fabricated in a resin made of poly(ethylene glycol) diacrylate (PEG-DA) (MW = 258) (PEG-DA-258). The SL process allowed us to print high aspect ratio (37 : 1) capillary channels (27 μm-width and 1 mm-height) and enable the trapping of liquid-phase hydrogels in the hydrogel barrier middle channel. We studied the permeability of hydrogel barriers made of PEG-DA (MW = 700) (PEG-DA-700, 10% polymer content by wt. in water) - as a model of photopolymerizable barriers - and agarose (MW = 120 000, 2% polymer content by wt. in water) - as a model of thermally-gelled barriers. We measured the diffusion of fluorescein, 10k-dextran-Alexa 680 and BSA-Texas Red through these barriers. Fluorescein diffusion was observed through both 10% PEG-DA-700 and 2% agarose barriers while 10k-dextran-Alexa 680 and BSA-Texas Red diffused appreciably only through the 2% agarose hydrogel barrier. Our microfluidic chip facilitates the tuning of such barriers simply by altering the hydrogel materials. The straightforward trapping of selective barriers in 3D-printed microchannels should find wide applicability in drug delivery, tissue engineering, cell separation, and organ-on-a-chip platforms.
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Affiliation(s)
- Yong Tae Kim
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Foege Building N423A, Seattle, Wa 98195, USA
- Department of Chemical Engineering & Biotechnology, Korea Polytechnic University, 237 Sangidaehak-ro, Siheung-si, Gyeonggi-do 15073, Republic of Korea
| | - Sara Bohjanen
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Foege Building N423A, Seattle, Wa 98195, USA
| | - Nirveek Bhattacharjee
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Foege Building N423A, Seattle, Wa 98195, USA
| | - Albert Folch
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Foege Building N423A, Seattle, Wa 98195, USA
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Lee NY. A review on microscale polymerase chain reaction based methods in molecular diagnosis, and future prospects for the fabrication of fully integrated portable biomedical devices. Mikrochim Acta 2018; 185:285. [PMID: 29736588 DOI: 10.1007/s00604-018-2791-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Accepted: 04/05/2018] [Indexed: 02/06/2023]
Abstract
Since the advent of microfabrication technology and soft lithography, the lab-on-a-chip concept has emerged as a state-of-the-art miniaturized tool for conducting the multiple functions associated with micro total analyses of nucleic acids, in series, in a seamless manner with a miniscule volume of sample. The enhanced surface-to-volume ratio inside a microchannel enables fast reactions owing to increased heat dissipation, allowing rapid amplification. For this reason, PCR has been one of the first applications to be miniaturized in a portable format. However, the nature of the basic working principle for microscale PCR, such as the complicated temperature controls and use of a thermal cycler, has hindered its total integration with other components into a micro total analyses systems (μTAS). This review (with 179 references) surveys the diverse forms of PCR microdevices constructed on the basis of different working principles and evaluates their performances. The first two main sections cover the state-of-the-art in chamber-type PCR microdevices and in continuous-flow PCR microdevices. Methods are then discussed that lead to microdevices with upstream sample purification and downstream detection schemes, with a particular focus on rapid on-site detection of foodborne pathogens. Next, the potential for miniaturizing and automating heaters and pumps is examined. The review concludes with sections on aspects of complete functional integration in conjunction with nanomaterial based sensing, a discussion on future prospects, and with conclusions. Graphical abstract In recent years, thermocycler-based PCR systems have been miniaturized to palm-sized, disposable polymer platforms. In addition, operational accessories such as heaters and mechanical pumps have been simplified to realize semi-automatted stand-alone portable biomedical diagnostic microdevices that are directly applicable in the field. This review summarizes the progress made and the current state of this field.
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Affiliation(s)
- Nae Yoon Lee
- Department of BioNano Technology, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si, Gyeonggi-do, 13120, South Korea.
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Lee JW, Jung JY, Lim SK. Simple and rapid identification of saliva by detection of oral streptococci using direct polymerase chain reaction combined with an immunochromatographic strip. Forensic Sci Int Genet 2018; 33:155-160. [DOI: 10.1016/j.fsigen.2017.12.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 11/14/2017] [Accepted: 12/19/2017] [Indexed: 01/25/2023]
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Deng H, Zhou X, Liu Q, Li B, Liu H, Huang R, Xing D. Paperfluidic Chip Device for Small RNA Extraction, Amplification, and Multiplexed Analysis. ACS APPLIED MATERIALS & INTERFACES 2017; 9:41151-41158. [PMID: 29116747 DOI: 10.1021/acsami.7b12637] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Small RNAs have been considered as potential biomarkers of various human diseases. Sensitive and multiplexed determination of small RNAs with point-of-care (POC) assay would be of great significance. Herein, an integrated paperfluidic chip device for multiplexed small RNA analysis was developed for the first time. In this system, the extraction and purification of small RNA was completed through a poly(ether sulfone) (PES) paper chip without the need for centrifugation. Subsequently, a newly designed hairpin probe-exponential amplification reaction (HP-EXPAR) was directly performed within the extraction paper chip. For the simultaneous realization of multiple detection, a multilayer paper chip was designed in a foldable manner with more portability and usability. Quantum dots (QDs) were employed as signal labels, which endowed this assay with high optical detection efficiency. Moreover, magnetic sheets were introduced as an alternative method for layer stacking, not only guaranteeing adjacent layers are in contact but also facilitating the sample dispersion. With these outstanding characteristics, our platform obtained a satisfactory sensitivity range from 3 × 105 to 3 × 108 copies with a limit of 3 × 106 copies. Additionally, the multiplex small RNA analyses from various cancer cells were in good agreement with the results of the real-time polymerase chain reaction (qRT-PCR). More importantly, simultaneous analysis of two types of miRNAs from clinical tumor samples demonstrated the clinical applicability of the system. Therefore, the proposed paper-based device shows great promise for POC applications in the future.
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Affiliation(s)
- Huaping Deng
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University , Guangzhou 510631, China
| | - Xiaoming Zhou
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University , Guangzhou 510631, China
| | - Qianwen Liu
- Department of Thoracic Surgery, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine , Guangzhou 510060, China
| | - Bofan Li
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University , Guangzhou 510631, China
| | - Hongxing Liu
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University , Guangzhou 510631, China
| | - Ru Huang
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University , Guangzhou 510631, China
| | - Da Xing
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University , Guangzhou 510631, China
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You JB, Kim YT, Lee KG, Choi Y, Choi S, Kim CH, Kim KH, Chang SJ, Lee TJ, Lee SJ, Im SG. Surface-Modified Mesh Filter for Direct Nucleic Acid Extraction and its Application to Gene Expression Analysis. Adv Healthc Mater 2017; 6. [PMID: 28714572 DOI: 10.1002/adhm.201700642] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Indexed: 12/23/2022]
Abstract
Rapid and convenient isolation of nucleic acids (NAs) from cell lysate plays a key role for onsite gene expression analysis. Here, this study achieves one-step and efficient capture of NA directly from cell lysate by developing a cationic surface-modified mesh filter (SMF). By depositing cationic polymer via vapor-phase deposition process, strong charge interaction is introduced on the surface of the SMF to capture the negatively charged NAs. The NA capturing capability of SMF is confirmed by X-ray photoelectron spectroscopy, fluorescent microscopy, and zeta potential measurement. In addition, the genomic DNAs of Escherichia Coli O157:H7 can be extracted by the SMF from artificially infected food, and fluorescent signal is observed on the surface of SMF after amplification of target gene. The proposed SMF is able to provide a more simplified, convenient, and fast extraction method and can be applied to the fields of food safety testing, clinical diagnosis, or environmental pollutant monitoring.
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Affiliation(s)
- Jae Bem You
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
| | - Yong Tae Kim
- Department of Nano Bio Research; National NanoFab Center (NNFC); Daejeon 34141 Republic of Korea
| | - Kyoung G. Lee
- Department of Nano Bio Research; National NanoFab Center (NNFC); Daejeon 34141 Republic of Korea
| | - Yunho Choi
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
| | - Seongkyun Choi
- Department of Nano Bio Research; National NanoFab Center (NNFC); Daejeon 34141 Republic of Korea
| | - Chi Hyun Kim
- Department of Nano Bio Research; National NanoFab Center (NNFC); Daejeon 34141 Republic of Korea
| | - Kyung Hoon Kim
- Department of Nano Bio Research; National NanoFab Center (NNFC); Daejeon 34141 Republic of Korea
| | - Sung Jin Chang
- Department of Chemistry; Chung-Ang University; Seoul 06911 Republic of Korea
| | - Tae Jae Lee
- Department of Nano Bio Research; National NanoFab Center (NNFC); Daejeon 34141 Republic of Korea
| | - Seok Jae Lee
- Department of Nano Bio Research; National NanoFab Center (NNFC); Daejeon 34141 Republic of Korea
| | - Sung Gap Im
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Graphene Research Center in KAIST Institute for NanoCentury; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
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Nanayakkara IA, Cao W, White IM. Simplifying Nucleic Acid Amplification from Whole Blood with Direct Polymerase Chain Reaction on Chitosan Microparticles. Anal Chem 2017; 89:3773-3779. [DOI: 10.1021/acs.analchem.7b00274] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Imaly A. Nanayakkara
- Fischell
Department of Bioengineering, University of Maryland, College Park, Maryland 20742, United States
| | - Weidong Cao
- Canon U.S. Life Sciences, Inc., Rockville, Maryland 20850, United States
| | - Ian M. White
- Fischell
Department of Bioengineering, University of Maryland, College Park, Maryland 20742, United States
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Park BH, Oh SJ, Jung JH, Choi G, Seo JH, Kim DH, Lee EY, Seo TS. An integrated rotary microfluidic system with DNA extraction, loop-mediated isothermal amplification, and lateral flow strip based detection for point-of-care pathogen diagnostics. Biosens Bioelectron 2016; 91:334-340. [PMID: 28043075 DOI: 10.1016/j.bios.2016.11.063] [Citation(s) in RCA: 153] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 11/16/2016] [Accepted: 11/28/2016] [Indexed: 01/05/2023]
Abstract
Point-of-care (POC) molecular diagnostics plays a pivotal role for the prevention and treatment of infectious diseases. In spite of recent advancement in microfluidic based POC devices, there are still rooms for development to realize rapid, automatic and cost-effective sample-to-result genetic analysis. In this study, we propose an integrated rotary microfluidic system that is capable of performing glass microbead based DNA extraction, loop mediated isothermal amplification (LAMP), and colorimetric lateral flow strip based detection in a sequential manner with an optimized microfluidic design and a rotational speed control. Rotation direction-dependent coriolis force and siphon valving structures enable us to perform the fluidic control and metering, and the use of the lateral flow strip as a detection method renders all the analytical processes for nucleic acid test simplified and integrated without the need of expensive instruments or human intervention. As a proof of concept for point-of-care DNA diagnostics, we identified the food-borne bacterial pathogen which was contaminated in water or milk. Not only monoplex Salmonella Typhimurium but also multiplex Salmonella Typhimurium and Vibrio parahaemolyticus were analysed on the integrated rotary genetic analysis microsystem with a limit of detection of 50 CFU in 80min. In addition, three multiple samples were simultaneously analysed on a single device. The sample-to-result capability of the proposed microdevice provides great usefulness in the fields of clinical diagnostics, food safety and environment monitoring.
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Affiliation(s)
- Byung Hyun Park
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Seung Jun Oh
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Jae Hwan Jung
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Goro Choi
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Ji Hyun Seo
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Do Hyun Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Eun Yeol Lee
- Department of Chemical Engineering, College of Engineering, Kyung Hee University, 1 Seochon-dong, Giheung-gu, Yongin-si, Gyeonggi-do 17140, Republic of Korea
| | - Tae Seok Seo
- Department of Chemical Engineering, College of Engineering, Kyung Hee University, 1 Seochon-dong, Giheung-gu, Yongin-si, Gyeonggi-do 17140, Republic of Korea.
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Boyd-Moss M, Baratchi S, Di Venere M, Khoshmanesh K. Self-contained microfluidic systems: a review. LAB ON A CHIP 2016; 16:3177-92. [PMID: 27425637 DOI: 10.1039/c6lc00712k] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Microfluidic systems enable rapid diagnosis, screening and monitoring of diseases and health conditions using small amounts of biological samples and reagents. Despite these remarkable features, conventional microfluidic systems rely on bulky expensive external equipment, which hinders their utility as powerful analysis tools outside of research laboratories. 'Self-contained' microfluidic systems, which contain all necessary components to facilitate a complete assay, have been developed to address this limitation. In this review, we provide an in-depth overview of self-contained microfluidic systems. We categorise these systems based on their operating mechanisms into three major groups: passive, hand-powered and active. Several examples are provided to discuss the structure, capabilities and shortcomings of each group. In particular, we discuss the self-contained microfluidic systems enabled by active mechanisms, due to their unique capability for running multi-step and highly controllable diagnostic assays. Integration of self-contained microfluidic systems with the image acquisition and processing capabilities of smartphones, especially those equipped with accessory optical components, enables highly sensitive and quantitative assays, which are discussed. Finally, the future trends and possible solutions to expand the versatility of self-contained, stand-alone microfluidic platforms are outlined.
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Affiliation(s)
| | - Sara Baratchi
- School of Health & Biomedical Sciences, RMIT University, Melbourne, Victoria, Australia.
| | - Martina Di Venere
- School of Civil & Industrial Engineering, Sapienza University, Rome, Italy
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An integrated direct loop-mediated isothermal amplification microdevice incorporated with an immunochromatographic strip for bacteria detection in human whole blood and milk without a sample preparation step. Biosens Bioelectron 2015; 79:273-9. [PMID: 26710344 DOI: 10.1016/j.bios.2015.12.044] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 12/11/2015] [Accepted: 12/15/2015] [Indexed: 11/23/2022]
Abstract
We have developed an integrated direct loop-mediated isothermal amplification (Direct LAMP) microdevice incorporated with an immunochromatographic strip (ICS) to identify bacteria contaminated in real samples. The Direct LAMP is a novel isothermal DNA amplification technique which does not require thermal cycling steps as well as any sample preparation steps such as cell lysis and DNA extraction for amplifying specific target genes. In addition, the resultant amplicons were colorimetrically detected on the ICS, thereby enabling the entire genetic analysis process to be simplified. The two functional units (Direct LAMP and ICS) were integrated on a single device without use of the tedious and complicated microvalve and tubing systems. The utilization of a slidable plate allows us to manipulate the fluidic control in the microchannels manually and the sequential operation of the Direct LAMP and ICS detection could be performed by switching the slidable plate to each functional unit. Thus, the combination of the direct isothermal amplification without any sample preparation and thermal cycling steps, the ICS based amplicon detection by naked eyes, and the slidable plate to eliminate the microvalves in the integrated microdevice would be an ideal platform for point-of-care DNA diaganotics. On the integrated Direct LAMP-ICS microdevice, we could analyze Staphylococcus aureus (S. aureus) and Escherichia coli O157:H7 (E. coli O157:H7) contaminated in human whole blood or milk at a single-cell level within 1h.
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