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Gao T, Zhou Z, Cheng D, Liu Y, Yang H, Wang Y. Electrochemical biosensor for highly sensitive detection of cTnI based on a dual signal amplification strategy of ARGET ATRP and ROP. Talanta 2024; 266:125009. [PMID: 37531884 DOI: 10.1016/j.talanta.2023.125009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/18/2023] [Accepted: 07/28/2023] [Indexed: 08/04/2023]
Abstract
Cardiac troponin I (cTnI), a gold biomarker for the diagnosis of acute myocardial infarction (AMI), plays a vital role in the early diagnosis, treatment and prognosis analysis of AMI. In this paper, an electrochemical biosensor for the highly sensitive determination of cTnI was fabricated based on the dual signal amplification strategy of electron transfer atom transfer radical polymerization (ARGET ATRP) and ring-opening polymerization (ROP) for the first time. Briefly, the thiolate cTnI-aptamer 1, which was bonded to the electrode via Au-S bonds, specifically captured cTnI to the electrode surface. Then, cTnI-aptamer 2 (Apt2) was successfully introduced to the electrode surface to form Apt-cTnI-Apt sandwich structure. Subsequently, the initiator BIBB was connected to Apt2 through bromination reaction, and then the resulting ATRP polymer was employed as a macromolecular initiator for the succeeding reaction. Next, the monomers, α-amino acid-N-carboxylic acid anhydride ferrocene derivatives (NCA-Fc), used for the ROP reaction produced numerous electroactive polymers on the electrode surface. The dual action of ARGET ATRP and ROP significantly improved sensitivity of cTnI biosensor assay, the prepared biosensor displayed a wide linear detection range from 100 fg mL-1 to 100 ng mL-1, with a detection limit of 32.24 fg mL-1. The method exhibited favorable selectivity, simple operation and excellent stability. Furthermore, the biosensor still rendered satisfactory analytical performance in the detection of clinical serum samples, indicating the application potential in clinical diagnosis.
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Affiliation(s)
- Tianyu Gao
- The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou, 450046, PR China
| | - Zhenbo Zhou
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Di Cheng
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Yanju Liu
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Huaixia Yang
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China.
| | - Ying Wang
- Department of Geriatric Cardiology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, PR China.
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Zhou Z, Gao T, Zhao Y, Yang P, Cheng D, Yang H, Wang Y, Li X. Dual signal amplified electrochemical aptasensor based on PEI-functionalized GO and ROP for highly sensitive detection of cTnI. Bioelectrochemistry 2023; 151:108402. [PMID: 36841148 DOI: 10.1016/j.bioelechem.2023.108402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/14/2023] [Accepted: 02/17/2023] [Indexed: 02/22/2023]
Abstract
Cardiac troponin I (cTnI) is considered as the gold standard for the diagnosis of acute myocardial infarction (AMI) because of its excellent specificity and sensitivity. Herein, a novel aptasensor based on the dual signal amplification strategy of Polyethyleneimine functionalized Graphene oxide (GO) and ring-opening polymerization (ROP) for the first time was successfully constructed to achieve high sensitivity detection of cTnI. Briefly, cTnI-aptamer 1 (Apt1) was immobilized on the surface of gold electrode by self-assembly of Au-S bonds to specifically capture cTnI. After specific recognition of cTnI, Apt2 coated PEI-functionalized GO composites acted as macroinitiators for the subsequent ROP reaction. Next, α-amino acid-N-carboxylic acid anhydride ferrocene derivatives (NCA-Fc), the monomer for ROP reaction, was added to the electrode surface. The combined application of PEI-functionalized GO and NCA-Fc better achieves the high sensitivity and signal amplification of the aptasensor. Under optimal conditions, the aptasensor exhibited a wide linear range of 10 fg mL-1 to 10 ng mL-1 and the limit of detection was 3.78 fg mL-1. Moreover, this method displayed the advantages of good selectivity, simple operation and excellent stability. Meanwhile, the aptasensor had good accuracy and applicability even in real serum samples analysis, demonstrating its considerable application potential in biomedical assays.
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Affiliation(s)
- Zhenbo Zhou
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou 450046, PR China
| | - Tianyu Gao
- The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou 450046, PR China
| | - Yuning Zhao
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou 450046, PR China
| | - Peng Yang
- Department of Geriatric Cardiology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, PR China
| | - Di Cheng
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou 450046, PR China
| | - Huaixia Yang
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou 450046, PR China.
| | - Ying Wang
- Department of Geriatric Cardiology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, PR China.
| | - Xiaofei Li
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou 450046, PR China.
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Ling M, Luo N, Cui L, Cao Y, Ning X, Sun J, Xu X, He S. On-bead DNA synthesis triggered by allosteric probe for detection of carcinoembryonic antigen. Mikrochim Acta 2022; 189:305. [PMID: 35915288 PMCID: PMC9342938 DOI: 10.1007/s00604-022-05404-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 07/03/2022] [Indexed: 12/02/2022]
Abstract
Sensitive quantification of protein biomarkers is highly desired for clinical diagnosis and treatment. Yet, unlike DNA/RNA which can be greatly amplified by PCR/RT-PCR, the amplification and detection of trace amount of proteins remain a great challenge. Here, we combined allosteric probe (AP) with magnetic bead (MB) for assembling an on-bead DNA synthesis system (named as APMB) to amplify protein signals. The AP is designed and conjugated onto the MB, enabling the protein biomarker to be separated and enriched. Once recognizing the biomarker, the AP alters its conformation to initiate DNA synthesis on beads for primary signal amplification. During the DNA synthesis, biotin-dATPs are incorporated into the newly synthesized DNA strands. Then, the biotin-labeled DNA specifically captures streptavidin (STR)–conjugated horseradish peroxidase (HRP), which is used to catalyze a colorimetric reaction for secondary signal amplification. By using carcinoembryonic antigen (CEA) as a protein model, the APMB can quantify protein biomarkers of as low as 0.01 ng/mL. The response values measured by APMB are linearly related to the protein concentrations in the range 0.05 to 20 ng/mL. Clinical examination demonstrated good practicability of the APMB in quantifying serum protein biomarker. The on-bead DNA synthesis could be exploited to improve protein signal amplification, thus facilitating protein biomarker detection of low abundance for early diagnosis.
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Affiliation(s)
- Min Ling
- Key Laboratory of Longevity and Aging-Related Diseases of Chinese Ministry of Education, Guangxi Colleges and Universities Key Laboratory of Biological Molecular Medicine Research, School of Basic Medical Sciences, Guangxi Medical University, Nanning, Guangxi, 530021, People's Republic of China
| | - Na Luo
- Key Laboratory of Longevity and Aging-Related Diseases of Chinese Ministry of Education, Guangxi Colleges and Universities Key Laboratory of Biological Molecular Medicine Research, School of Basic Medical Sciences, Guangxi Medical University, Nanning, Guangxi, 530021, People's Republic of China
| | - Lanyu Cui
- Key Laboratory of Longevity and Aging-Related Diseases of Chinese Ministry of Education, Guangxi Colleges and Universities Key Laboratory of Biological Molecular Medicine Research, School of Basic Medical Sciences, Guangxi Medical University, Nanning, Guangxi, 530021, People's Republic of China
| | - Yongqiang Cao
- Key Laboratory of Longevity and Aging-Related Diseases of Chinese Ministry of Education, Guangxi Colleges and Universities Key Laboratory of Biological Molecular Medicine Research, School of Basic Medical Sciences, Guangxi Medical University, Nanning, Guangxi, 530021, People's Republic of China
| | - Xueping Ning
- Key Laboratory of Longevity and Aging-Related Diseases of Chinese Ministry of Education, Guangxi Colleges and Universities Key Laboratory of Biological Molecular Medicine Research, School of Basic Medical Sciences, Guangxi Medical University, Nanning, Guangxi, 530021, People's Republic of China
| | - Jian Sun
- Key Laboratory of Longevity and Aging-Related Diseases of Chinese Ministry of Education, Guangxi Colleges and Universities Key Laboratory of Biological Molecular Medicine Research, School of Basic Medical Sciences, Guangxi Medical University, Nanning, Guangxi, 530021, People's Republic of China
| | - Xiaoping Xu
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350108, People's Republic of China
| | - Shengbin He
- Key Laboratory of Longevity and Aging-Related Diseases of Chinese Ministry of Education, Guangxi Colleges and Universities Key Laboratory of Biological Molecular Medicine Research, School of Basic Medical Sciences, Guangxi Medical University, Nanning, Guangxi, 530021, People's Republic of China.
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Das M, Chakraborty T, Yu Lin C, Fong Lei K, Haur Kao C. Electrochemical detection of acute renal disease biomarker by Galinstan nanoparticles interfaced to bilayer polymeric structured dirhenium heptoxide film. Bioelectrochemistry 2022; 147:108194. [PMID: 35752029 DOI: 10.1016/j.bioelechem.2022.108194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/14/2022] [Accepted: 06/15/2022] [Indexed: 11/02/2022]
Abstract
This work describes a facile fabrication of an efficient electrochemical sensor utilizing sonication-derived Galinstan nanoparticles (Galinstan NPs) interfaced to annealed dirhenium heptoxide (Re2O7) thin-film on Silicon (Si) for the quantitative detection of the most promising acute renal disease biomarker Neutrophil Gelatinase Associated Lipocalin (NGAL). Under optimized preconditions, the anti-NGAL antibodies were immobilized on the Galinstan NPs/Re2O7/Si electrode by carbodiimide crosslinking to detect NGAL. The composition, morphology, and structural properties of the electrode were elucidated by various physical characterizations. The sensor obtained a high sensitivity (0.018 µA-1ng-1ml-1, R2 = 0.99) in differential pulse voltammetry and a minimum detection limit (2.14 ng ml-1) in electrochemical impedance spectroscopy for a wide range of NGAL concentrations (25-650 ng ml-1) with high selectivity and stability. The intensified performance of the sensor was achieved by the summed-up electron transfer from the Re2O7 film to Galinstan NPs and Galinstan NPs to the electroactive reactants. Additionally, the outer 2D gallium oxide (Ga2O3) layer of Galinstan Nps enhanced the redox activities, whereas the metallic core contributed to the magnificent conductivity. The excellent recovery rates of the sensor for different concentrations of NGAL measured in commercial human serum by the standard addition method assured the feasibility of the sensor.
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Affiliation(s)
- Munmun Das
- Department of Electronic Engineering, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan 333, Taiwan, ROC
| | - Titisha Chakraborty
- Department of Electronic Engineering, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan 333, Taiwan, ROC
| | - Chan Yu Lin
- Kidney Research Center, Department of Nephrology, Chang Gung Memorial Hospital, No.5, Fuxing St., Guishan Dist., Taoyuan City 333, Taiwan ROC
| | - Kin Fong Lei
- Biomedical Engineering, Chang Gung University, Taoyuan, Taiwan
| | - Chyuan Haur Kao
- Department of Electronic Engineering, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan 333, Taiwan, ROC; Kidney Research Center, Department of Nephrology, Chang Gung Memorial Hospital, No.5, Fuxing St., Guishan Dist., Taoyuan City 333, Taiwan ROC; Department of Electronic Engineering, Ming Chi University of Technology, 284 Gungjuan Rd., Taishan Dist., New Taipei City 24301, Taiwan, ROC; Center for Green Technology, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan 333, Taiwan, ROC.
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Cheng D, Zhou Z, Shang S, Wang H, Guan H, Yang H, Liu Y. Electrochemical immunosensor for highly sensitive detection of cTnI via in-situ initiated ROP signal amplification strategy. Anal Chim Acta 2022; 1219:340032. [DOI: 10.1016/j.aca.2022.340032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 05/25/2022] [Accepted: 06/02/2022] [Indexed: 11/27/2022]
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