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Li Y, Chen M, Fan X, Peng J, Pan L, Tu K, Chen Y. Sandwich fluorometric method for dual-role recognition of Listeria monocytogenes based on antibiotic-affinity strategy and fluorescence quenching effect. Anal Chim Acta 2022; 1221:340085. [DOI: 10.1016/j.aca.2022.340085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 06/10/2022] [Accepted: 06/12/2022] [Indexed: 11/01/2022]
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2
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Liu R, Yi G, Ji B, Liu X, Gui Y, Xia Z, Fu Q. Metal–Organic Frameworks-Based Immobilized Enzyme Microreactors Integrated with Capillary Electrochromatography for High-Efficiency Enzyme Assay. Anal Chem 2022; 94:6540-6547. [PMID: 35465669 DOI: 10.1021/acs.analchem.1c05586] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Rui Liu
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China
| | - Gaoyi Yi
- Department of Clinical Pharmacy, Jintang Hospital, Sichuan University West China Hospital, Chengdu, Sichuan 610400, China
| | - Baian Ji
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Xiuqiong Liu
- Department of Clinical Pharmacy, Jintang Hospital, Sichuan University West China Hospital, Chengdu, Sichuan 610400, China
| | - Yuanqi Gui
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Zhining Xia
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China
- School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Qifeng Fu
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
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Ji DD, Wu MX, Ding SN. Photonic crystal barcodes assembled from dendritic silica nanoparticles for the multiplex immunoassays of ovarian cancer biomarkers. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:298-305. [PMID: 34985054 DOI: 10.1039/d1ay01658j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The combined detection of CA125, CEA and AFP is of great significance in the diagnosis of ovarian cancer. Photonic crystal (PhC) barcodes have apparent advantages in multiplex immunoassays of ovarian cancer markers. In this paper, a novel PhC barcode was assembled from dendritic silica nanoparticles (dSiO2) for multiplex detection of ovarian cancer biomarkers. The interconnected macroporous structure of the dSiO2 PhC beads and the open porous topography of dendritic silica particles could increase the surface area to volume ratio for antibody immobilization. We simultaneously detected multiple ovarian cancer markers in one test tube using the sandwich immunization method by utilizing dSiO2 PhC beads as a barcode and CdTe QDs as a detection signal. The detection limits of the three ovarian cancer markers, AFP, CEA and CA125, were 0.52 ng mL-1, 0.64 ng mL-1 and 0.79 U mL-1, respectively (the signal-to-noise ratio was 3). Compared with the classic silica colloidal crystal bead (SCCB) suspension array, the sensitivity of the dSiO2 PhC bead suspension array was increased. In addition, the results showed that this barcode suspension array had acceptable accuracy and good reproducibility.
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Affiliation(s)
- Dan-Dan Ji
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
| | - Mei-Xia Wu
- Lianshui People's Hospital, Jiangsu 223400, China
| | - Shou-Nian Ding
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
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He Y, Qi M. A novel column modification approach for capillary gas chromatography: combination with a triptycene-based stationary phase achieves high separation performance and inertness. NEW J CHEM 2021. [DOI: 10.1039/d1nj00571e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Integration of the novel column modification approach with a triptycene-based stationary phase achieves high-resolution performance and inertness towards acids/bases and isomers for capillary GC analysis.
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Affiliation(s)
- Yongrui He
- Key Laboratory of Cluster Science
- Ministry of Education of China
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing
| | - Meiling Qi
- Key Laboratory of Cluster Science
- Ministry of Education of China
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing
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Chemiluminescent Optical Fiber Immunosensor Combining Surface Modification and Signal Amplification for Ultrasensitive Determination of Hepatitis B Antigen. SENSORS 2020; 20:s20174912. [PMID: 32878030 PMCID: PMC7506923 DOI: 10.3390/s20174912] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 08/25/2020] [Accepted: 08/28/2020] [Indexed: 12/20/2022]
Abstract
Optical fiber based immunosensors are very attractive for biomarker detection. In order to improve the sensor response, we propose a promising strategy which combines porous-layer modification of the fiber surface and streptavidin-biotin-peroxidase nano-complex signal amplification in chemiluminescent detection. Two hepatitis B antigens, hepatitis B surface antigen (HBsAg) and hepatitis B e antigen (HBeAg), are used as the targets for analysis using the proposed sensor. Comparing to immunoassays using normal optical fiber sensors, the response of the present sensor is enhanced by a factor of 4.8 and 6.7 for detection of HBsAg and HBeAg, respectively. The limit-of-quantitation of the proposed method is as low as 0.3 fg/mL (0.01 fg/mL) with a wide linear response range of 3 fg/mL–150 ng/mL (0.1 fg/mL–160 ng/mL) for sensing HBsAg (HBeAg). Quantitative determination of HBsAg and HBeAg in human serum samples is performed, showing the applicability of the proposed method for biomarker detection.
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Jones A, Dhanapala L, Kankanamage RNT, Kumar CV, Rusling JF. Multiplexed Immunosensors and Immunoarrays. Anal Chem 2020; 92:345-362. [PMID: 31726821 PMCID: PMC7202053 DOI: 10.1021/acs.analchem.9b05080] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Abby Jones
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, United States
| | - Lasangi Dhanapala
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, United States
| | - Rumasha N. T. Kankanamage
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, United States
| | - Challa V. Kumar
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, United States
- Institute of Materials Science, University of Connecticut, 97 North Eagleville Road, Storrs, Connecticut 06269, United States
| | - James F. Rusling
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, United States
- Institute of Materials Science, University of Connecticut, 97 North Eagleville Road, Storrs, Connecticut 06269, United States
- Department of Surgery and Neag Cancer Center, University of Connecticut Health Center, Farmington, Connecticut 06232, United States
- School of Chemistry, National University of Ireland Galway, University Road, Galway, Ireland H91 TK33
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Ultra-sensitive capillary immunosensor combining porous-layer surface modification and biotin-streptavidin nano-complex signal amplification: Application for sensing of procalcitonin in serum. Talanta 2019; 205:120089. [DOI: 10.1016/j.talanta.2019.06.089] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 06/21/2019] [Accepted: 06/26/2019] [Indexed: 12/19/2022]
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Liu X, Azhar I, Khan H, Qu Q, Tian M, Yang L. Capillary electrophoresis-immobilized enzyme microreactors for acetylcholinesterase assay with surface modification by highly-homogeneous microporous layer. J Chromatogr A 2019; 1609:460454. [PMID: 31443966 DOI: 10.1016/j.chroma.2019.460454] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 08/04/2019] [Accepted: 08/12/2019] [Indexed: 12/31/2022]
Abstract
We propose a new capillary electrophoresis (CE)-based open-tubular immobilized enzyme microreactor (OT-IMER) and its application in acetylcholinesterase (AChE) assays. The IMER is fabricated at the capillary inlet (reactor length of ∼1 cm) with the inner surface modified by a micropore-structured layer (thickness of ∼220 nm, pore size of ∼15-20 nm). The use of IMER accomplishes the enzymatic reaction and separation/detection of the products in the same capillary within 3 min. The feasibility of the proposed method is evaluated via online analysis of the activity and inhibition of AChE enzymes. Such method exhibits good reproducibility with relative standard deviation (RSD) of less than 4% for 20 runs, and the enzyme remains over 82% of the initial activity after usage of 7 days. The IMERs are successfully applied to detect the organophosphorus pesticide, paraoxon, in three types of vegetable juice samples with a limit of detection of as low as 61 ng mL-1. Results show that the spiked samples are in the range of 89.6-105.9% with RSD less than 2.7%, thereby indicating its satisfactory level of accurate and reliable analysis of real samples by using the proposed method. Our study indicates that, with combination of advantages of both porous-layer capillary and CE OT-IMER, the proposed method is capable to enhance enzymatic reactions and to achieve rapid analysis with simple instrumentation and operation, thus would pave the way for extensive application of CE-based IMERs in a variety of bioanalysis.
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Affiliation(s)
- Xin Liu
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin Province, 130024, China
| | - Irfan Azhar
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin Province, 130024, China
| | - Habib Khan
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin Province, 130024, China
| | - Qishu Qu
- Key Laboratory of Functional Molecule Design and Interface Process, School of Materials and Chemical Engineering, Anhui Jianzhu University, Hefei, 230601, China
| | - Miaomiao Tian
- Institute of Chemical and Industrial Bioengineering, Jilin Engineering Normal University, Changchun, Jilin Province, 130052, China.
| | - Li Yang
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin Province, 130024, China.
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Surface modification with highly-homogeneous porous silica layer for enzyme immobilization in capillary enzyme microreactors. Talanta 2019; 197:539-547. [DOI: 10.1016/j.talanta.2019.01.080] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 01/15/2019] [Accepted: 01/18/2019] [Indexed: 12/25/2022]
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