1
|
Okanda T, Mitsutake H, Aso R, Sekizawa R, Takemura H, Matsumoto T, Nakamura S. Rapid detection assay of toxigenic Clostridioides difficile through PathOC RightGene, a novel high-speed polymerase chain reaction device. Diagn Microbiol Infect Dis 2020; 99:115247. [PMID: 33188946 DOI: 10.1016/j.diagmicrobio.2020.115247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/11/2020] [Accepted: 10/12/2020] [Indexed: 01/04/2023]
Abstract
Nucleic acid amplification tests for diagnosing Clostridioides difficile infections (CDI) are improving to become faster and more accurate. This study aimed to evaluate the accuracy of rapid detection of toxigenic C. difficile using the novel high-speed polymerase chain reaction (PCR) device, PathOC RightGene. These results were compared and evaluated with real-time PCR (qPCR) and enzyme immunoassays (EIA) kit. For this study, 102 C. difficile and 3 Clostridium species isolated from CDI patients were used. These C. difficile isolates were 85 toxigenic and 17 non-toxigenic strains. The results of qPCR served as a standard, and sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of the PathOC Right Gene were 99.2%, 99.4%, 100%, 98.8%, and 99.3%, respectively. Turnaround time of qPCR and EIA was 85 and 30 minutes, whereas PathOC RightGene was only 25 minutes including DNA extraction. This novel high-speed PCR device detected toxigenic C. difficile rapidly and accurately.
Collapse
Affiliation(s)
- Takashi Okanda
- Department of Microbiology, St. Marianna University School of Medicine, Kawasaki, Japan; Department of Microbiology, Tokyo Medical University, Tokyo, Japan.
| | | | - Ryoko Aso
- Metaboscreen Co., Ltd., Yokohama, Japan
| | | | - Hiromu Takemura
- Department of Microbiology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Tetsuya Matsumoto
- Department of Infectious Diseases, International University of Health and Welfare, Narita, Japan
| | - Shigeki Nakamura
- Department of Microbiology, Tokyo Medical University, Tokyo, Japan
| |
Collapse
|
2
|
YANG M, HUANG Z, CHANG J, YOU H. A Novel Solution-auto-introduction Electrophoresis Microchip Based on Capillary Force. ANAL SCI 2018; 34:1285-1290. [DOI: 10.2116/analsci.18p199] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Mingpeng YANG
- Institute of Intelligent Machines, Chinese Academy of Sciences
- University of Science and Technology of China
| | - Zhe HUANG
- Institute of Intelligent Machines, Chinese Academy of Sciences
- University of Science and Technology of China
| | - Jianguo CHANG
- Institute of Intelligent Machines, Chinese Academy of Sciences
- University of Science and Technology of China
| | - Hui YOU
- Institute of Intelligent Machines, Chinese Academy of Sciences
- University of Science and Technology of China
| |
Collapse
|
3
|
Shirai A, Nakashima K, Sueyoshi K, Endo T, Hisamoto H. Development of a single-step immunoassay microdevice based on a graphene oxide-containing hydrogel possessing fluorescence quenching and size separation functions. Analyst 2018; 142:472-477. [PMID: 28091627 DOI: 10.1039/c6an02485h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An immunoassay, which is an indispensable analytical method both in biological research and in medical fields was successfully integrated into a "single-step" by developing a microdevice composed of a graphene oxide (GO)-containing hydrogel and a poly (dimethylsiloxane) (PDMS) microchannel array with a polyethylene glycol (PEG) coating containing a fluorescently-labelled antibody. Here we used 2-hydroxyethylmethacrylate (HEMA) as a monomer that is easily, and homogeneously, mixed with GO to synthesize the hydrogel. The fluorescence quenching and size separation functions were then optimized by controlling the ratios of HEMA and GO. Free fluorescently-labelled antibody was successfully separated from the immunoreaction mixture by the hydrogel network structure, and the fluorescence was subsequently quenched by GO. In comparison to the previously reported immunoassay system using GO, the present system achieved a very high fluorescence resonance energy transfer (FRET) efficiency (∼90%), due to the use of direct adsorption of the fluorescently-labelled antibody to the GO surface; in contrast, the former reported method relied on indirect adsorption of the fluorescently-labelled antibody via immunocomplex formation at the GO surface. Finally, the single-step immunoassay microdevice was made by combining the developed hydrogel and the PDMS microchannel with a coating containing the fluorescently-labelled antibody, and successfully applied for the single-step analysis of IgM levels in diluted human serum by simple introduction of the sample via capillary action.
Collapse
Affiliation(s)
- Akihiro Shirai
- Graduate School of Engineering, Osaka Prefecture University, 1-1, Gakuen-cho Nakaku, Sakai City, Osaka, 599-8531, Japan.
| | - Kaho Nakashima
- Graduate School of Engineering, Osaka Prefecture University, 1-1, Gakuen-cho Nakaku, Sakai City, Osaka, 599-8531, Japan.
| | - Kenji Sueyoshi
- Graduate School of Engineering, Osaka Prefecture University, 1-1, Gakuen-cho Nakaku, Sakai City, Osaka, 599-8531, Japan.
| | - Tatsuro Endo
- Graduate School of Engineering, Osaka Prefecture University, 1-1, Gakuen-cho Nakaku, Sakai City, Osaka, 599-8531, Japan.
| | - Hideaki Hisamoto
- Graduate School of Engineering, Osaka Prefecture University, 1-1, Gakuen-cho Nakaku, Sakai City, Osaka, 599-8531, Japan.
| |
Collapse
|
4
|
Shirai A, Henares TG, Sueyoshi K, Endo T, Hisamoto H. Fast and single-step immunoassay based on fluorescence quenching within a square glass capillary immobilizing graphene oxide-antibody conjugate and fluorescently labelled antibody. Analyst 2018; 141:3389-94. [PMID: 27127806 DOI: 10.1039/c5an02637g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A single-step, easy-to-use, and fast capillary-type immunoassay device composed of a polyethylene glycol (PEG) coating containing two kinds of antibody-reagents, including an antibody-graphene oxide conjugate and fluorescently labelled antibody, was developed in this study. The working principle involved the spontaneous dissolution of the PEG coating, diffusion of reagents, and subsequent immunoreaction, triggered by the capillary action-mediated introduction of a sample solution. In a sample solution containing the target antigen, two types of antibody reagents form a sandwich-type antigen-antibody complex and fluorescence quenching takes place via fluorescence resonance energy transfer between the labelled fluorescent molecules and graphene oxide. Antigen concentration can be measured based on the decrease in fluorescence intensity. An antigen concentration-dependent response was obtained for the model target protein sample (human IgG, 0.2-10 μg mL(-1)). The present method can shorten the reaction time to within 1 min (approximately 40 s), while conventional methods using the same reagents require reaction times of approximately 20 min because of the large reaction scale. The proposed method is one of the fastest immunoassays ever reported. Finally, the present device was used to measure human IgG in diluted serum samples to demonstrate that this method can be used for fast medical diagnosis.
Collapse
Affiliation(s)
- Akihiro Shirai
- Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho Nakaku, Sakai City, Osaka 599-8531, Japan.
| | - Terence G Henares
- Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho Nakaku, Sakai City, Osaka 599-8531, Japan.
| | - Kenji Sueyoshi
- Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho Nakaku, Sakai City, Osaka 599-8531, Japan.
| | - Tatsuro Endo
- Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho Nakaku, Sakai City, Osaka 599-8531, Japan.
| | - Hideaki Hisamoto
- Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho Nakaku, Sakai City, Osaka 599-8531, Japan.
| |
Collapse
|
5
|
Sanuki R, Sueyoshi K, Endo T, Hisamoto H. Double Sweeping: Highly Effective Sample Preconcentration Using Cationic and Anionic Micelles and Its Application to a Multiple Enzyme Activity Assay. Anal Chem 2017; 89:6505-6512. [DOI: 10.1021/acs.analchem.7b00586] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ryota Sanuki
- Department of Applied
Chemistry,
Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku,
Sakai-shi, Osaka 599-8531, Japan
| | - Kenji Sueyoshi
- Department of Applied
Chemistry,
Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku,
Sakai-shi, Osaka 599-8531, Japan
| | - Tatsuro Endo
- Department of Applied
Chemistry,
Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku,
Sakai-shi, Osaka 599-8531, Japan
| | - Hideaki Hisamoto
- Department of Applied
Chemistry,
Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku,
Sakai-shi, Osaka 599-8531, Japan
| |
Collapse
|
6
|
Sueyoshi K, Nogawa Y, Sugawara K, Endo T, Hisamoto H. Highly Sensitive and Multiple Enzyme Activity Assay Using Reagent-release Capillary-Isoelectric Focusing with Rhodamine 110-based Substrates. ANAL SCI 2016; 31:1155-61. [PMID: 26561260 DOI: 10.2116/analsci.31.1155] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In this study, a simple and highly sensitive enzyme activity assay based on reagent-release capillary-isoelectric focusing is described. Reagent-release capillaries containing a fluorescent substrate, which produces fluorescent products possessing an isoelectric point after reaction with enzymes, provides a simple procedure. This is because it allows to spontaneously inject a sample solution into the capillary by capillary action, mixing reagents, and subsequently concentrating the fluorescent products based on isoelectric focusing. Fluorescent rhodamine 110 and its monoamide derivative, which were generated as a final product and an intermediate, respectively, were then focused and separated by reagent-release capillary-isoelectric focusing. After 30 min of enzyme reactions, two focused fluorescent bands were clearly isolated along the prepared capillaries. Employing the focused band of rhodamine 110 monoamide allowed for highly sensitive detection of enzyme activity in the 10 pg mL(-1) order, while that of the conventional assay using a microplate was in the ng mL(-1) order. Furthermore, arraying reagent-release capillaries of different substrates on a chip allowed for simultaneous multi-assay of enzyme activity with good sensitivity in the pg mL(-1) order for each protein.
Collapse
Affiliation(s)
- Kenji Sueyoshi
- Graduate School of Engineering, Osaka Prefecture University
| | | | | | | | | |
Collapse
|
7
|
Hibara A, Fukuyama M, Chung M, Priest C, Proskurnin MA. Interfacial Phenomena and Fluid Control in Micro/Nanofluidics. ANAL SCI 2016; 32:11-21. [PMID: 26753700 DOI: 10.2116/analsci.32.11] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Fundamental aspects of rapidly advancing micro/nanofluidic devices are reviewed from the perspective of liquid interface chemistry and physics, including the influence of capillary pressure in microfluidic two-phase flows and phase transitions related to capillary condensation.
Collapse
Affiliation(s)
- Akihide Hibara
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology
| | | | | | | | | |
Collapse
|
8
|
SUEYOSHI K, MIYAHARA Y, ENDO T, HISAMOTO H. A Simple and Rapid Immunoassay Based on Microchip Electrophoresis Using a Reagent-Release Cartridge. CHROMATOGRAPHY 2016. [DOI: 10.15583/jpchrom.2015.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Kenji SUEYOSHI
- Graduate School of Engineering, Osaka Prefecture University
| | - Yuta MIYAHARA
- Graduate School of Engineering, Osaka Prefecture University
| | - Tatsuro ENDO
- Graduate School of Engineering, Osaka Prefecture University
| | | |
Collapse
|
9
|
Miyazako H, Mabuchi K, Hoshino T. Spatiotemporal Control of Electrokinetic Transport in Nanofluidics Using an Inverted Electron-Beam Lithography System. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:6595-6603. [PMID: 25996098 DOI: 10.1021/acs.langmuir.5b00806] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Manipulation techniques of biomolecules have been proposed for biochemical analysis which combine electrokinetic dynamics, such as electrophoresis or electroosmotic flow, with optical manipulation to provide high throughput and high spatial degrees of freedom. However, there are still challenging problems in nanoscale manipulation due to the diffraction limit of optics. We propose here a new manipulation technique for spatiotemporal control of chemical transport in nanofluids using an inverted electron-beam (EB) lithography system for liquid samples. By irradiating a 2.5 keV EB to a liquid sample through a 100-nm-thick SiN membrane, negative charges can be generated within the SiN membrane, and these negative charges can induce a highly focused electric field in the liquid sample. We showed that the EB-induced negative charges could induce fluid flow, which was strong enough to manipulate 240 nm nanoparticles in water, and we verified that the main dynamics of this EB-induced fluid flow was electroosmosis caused by changing the zeta potential of the SiN membrane surface. Moreover, we demonstrated manipulation of a single nanoparticle and concentration patterning of nanoparticles by scanning EB. Considering the shortness of the EB wavelength and Debye length in buffer solutions, we expect that our manipulation technique will be applied to nanomanipulation of biomolecules in biochemical analysis and control.
Collapse
Affiliation(s)
- Hiroki Miyazako
- †Department of Information Physics and Computing, Graduate School of Information Science and Technology, and ‡Research Fellow of the Japan Society for the Promotion of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kunihiko Mabuchi
- †Department of Information Physics and Computing, Graduate School of Information Science and Technology, and ‡Research Fellow of the Japan Society for the Promotion of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takayuki Hoshino
- †Department of Information Physics and Computing, Graduate School of Information Science and Technology, and ‡Research Fellow of the Japan Society for the Promotion of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| |
Collapse
|
10
|
Tian M, Wang Y, Mohamed AC, Guo L, Yang L. Enhancing separation in short-capillary electrophoresis via pressure-driven backflow. Electrophoresis 2015; 36:1549-54. [DOI: 10.1002/elps.201500013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 03/05/2015] [Accepted: 03/24/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Miaomiao Tian
- Faculty of Chemistry; Northeast Normal University; ChangChun Jilin P. R. China
| | - Yujia Wang
- Faculty of Chemistry; Northeast Normal University; ChangChun Jilin P. R. China
| | | | - Liping Guo
- Faculty of Chemistry; Northeast Normal University; ChangChun Jilin P. R. China
| | - Li Yang
- Faculty of Chemistry; Northeast Normal University; ChangChun Jilin P. R. China
| |
Collapse
|
11
|
Funano SI, Sugahara M, Henares TG, Sueyoshi K, Endo T, Hisamoto H. A single-step enzyme immunoassay capillary sensor composed of functional multilayer coatings for the diagnosis of marker proteins. Analyst 2015; 140:1459-65. [DOI: 10.1039/c4an01781a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A single-step, easy-to-use enzyme immunoassay capillary sensor, composed of substrate-immobilized hydrophobic coating, hydrogel coating, and soluble coating containing an enzyme-labeled antibody, was developed.
Collapse
Affiliation(s)
- Shun-ichi Funano
- Graduate School of Engineering
- Osaka Prefecture University
- Sakai City
- Japan
| | - Masato Sugahara
- Graduate School of Engineering
- Osaka Prefecture University
- Sakai City
- Japan
| | - Terence G. Henares
- Graduate School of Engineering
- Osaka Prefecture University
- Sakai City
- Japan
| | - Kenji Sueyoshi
- Graduate School of Engineering
- Osaka Prefecture University
- Sakai City
- Japan
| | - Tatsuro Endo
- Graduate School of Engineering
- Osaka Prefecture University
- Sakai City
- Japan
| | - Hideaki Hisamoto
- Graduate School of Engineering
- Osaka Prefecture University
- Sakai City
- Japan
| |
Collapse
|