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Wang Y, Ruan H, Zhang J, Wang Y, Guo M, Ke T, Luo J, Yang M. CHA-based dual signal amplification immunofluorescence biosensor for ultrasensitive detection of dimethomorph. Anal Chim Acta 2022; 1227:340323. [DOI: 10.1016/j.aca.2022.340323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/23/2022] [Accepted: 08/23/2022] [Indexed: 11/01/2022]
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Qiu F, Gan X, Yao J, Jiang B, Yuan R, Xiang Y. CRISPR/Cas12a-derived sensitive electrochemical biosensing of NF-κB p50 based on hybridization chain reaction and DNA hydrogel. Biosens Bioelectron 2022; 216:114665. [DOI: 10.1016/j.bios.2022.114665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 08/08/2022] [Accepted: 08/25/2022] [Indexed: 11/16/2022]
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An ultrasensitive label-free photoelectrochemical aptasensor based on terminal deoxynucleotidyl transferase amplification and catalytic reaction of G-quadruplex/hemin. Anal Chim Acta 2022; 1211:339912. [DOI: 10.1016/j.aca.2022.339912] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 04/30/2022] [Accepted: 05/04/2022] [Indexed: 01/19/2023]
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Ratiometric detection of transcription factor based on Europium(III) complex-doped silicon nanoparticles and a G-quadruplex-selective Iridium(III) complex. Anal Chim Acta 2022; 1209:339855. [DOI: 10.1016/j.aca.2022.339855] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/11/2022] [Accepted: 04/18/2022] [Indexed: 11/17/2022]
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Catalytic hairpin assembly as cascade nucleic acid circuits for fluorescent biosensor: design, evolution and application. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116582] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Mahani M, Taheri M, Divsar F, Khakbaz F, Nomani A, Ju H. Label-free triplex DNA-based biosensing of transcription factor using fluorescence resonance energy transfer between N-doped carbon dot and gold nanoparticle. Anal Chim Acta 2021; 1181:338919. [PMID: 34556210 DOI: 10.1016/j.aca.2021.338919] [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: 07/04/2021] [Revised: 07/21/2021] [Accepted: 08/04/2021] [Indexed: 10/20/2022]
Abstract
Herein, a new turn-on fluorescent assay was established as a platform for the sensing of transcription factor NF-kB p50 based on triplex DNA labeled with N-doped carbon dots (NCDs) and gold nanoparticles (AuNPs) as donors and acceptors, respectively in the fluorescence resonance energy transfer (FRET) system. The synthetized nanoparticles were studied by different characterization techniques. A labeled DNA molecule was designed to form a triplex when no target protein existence and reported its formation by the change in FRET efficiency. While the triplex DNA was formed, the fluorescence of carbon dots at 503 nm (excitation at 460 nm) was quenched by FRET between NCD and AuNP. However, presence of NF-kB p50 followed by the considerable enhancement in the fluorescence intensity caused by the release of AuNPs labeled single stranded DNA from the triplex DNA structure, used for sensitive determination of the transcription factor. This technique showed a linearity (R2 = 0.9943) in the range of 20-150 pM with a limit of detection of 9 pM for the determination of NF-kB p50. Moreover, the sequence-specific triplex-based biosensor could discriminate NF-kB p50 from the other proteins with high selectively. Our results suggest that the biosensor provides a generalizable platform for rapid detection of NF-kB p50 in synthetic medium, promising in prevention and early diagnosis of cancer.
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Affiliation(s)
- Mohamad Mahani
- Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Graduate University of Advanced Technology, Kerman, 7631818356, Iran.
| | - Maryam Taheri
- Department of Nanotechnology, Faculty of Sciences and Modern Technologies, Graduate University of Advanced Technology, Kerman, 7631818356, Iran
| | - Faten Divsar
- Department of Chemistry, Payame Noor Universtiy (PNU), P. O. BOX 19395-3697, Tehran, Iran
| | - Faeze Khakbaz
- Department of NanoChemistry, Faculty of Chemistry, Shahid Bahonar University, Kerman, Iran
| | - Alireza Nomani
- Department of Pharmaceutics, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, Department of Chemistry, Nanjing University, Nanjing, 210023, China
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“Signal-on” SERS sensing platform for highly sensitive and selective Pb2+ detection based on catalytic hairpin assembly. Anal Chim Acta 2020; 1127:106-113. [DOI: 10.1016/j.aca.2020.06.038] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 05/26/2020] [Accepted: 06/16/2020] [Indexed: 01/12/2023]
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Jia Y, Yang L, Xue J, Zhang N, Fan D, Ma H, Ren X, Hu L, Wei Q. Bioactivity-Protected Electrochemiluminescence Biosensor Using Gold Nanoclusters as the Low-Potential Luminophor and Cu 2S Snowflake as Co-reaction Accelerator for Procalcitonin Analysis. ACS Sens 2019; 4:1909-1916. [PMID: 31259531 DOI: 10.1021/acssensors.9b00870] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The expansion of electrochemiluminescence (ECL) technology to immunoassay at the core of care emphasizes all immune molecules will not be inactivated in the analysis process. That poses a major challenge to ECL-based biosensors due to the deoxynucleotide sequences of an antigen or antibody could be oxidized through a route of excessive cyclic potential. Herein, an ultrasensitive ECL biosensor was developed based on a novel bioactivity-protected sensing strategy utilizing Au nanoclusters (Au NCs) as low-potential luminophor for detection of procalcitonin (PCT). Bovine serum albumin (BSA)-templated Au NCs exhibited a low-potential anodic ECL signal in triethylamine (TEA) solution at 0.87 V, where it is suitable for the survival of immune molecules. Taking advantage of good conductivity and high surface area, a Cu2S snowflake not only functions as a satisfying substrate for connecting immune molecules but also acts as co-reaction accelerator to produce more cationic radicals TEA•+, which could improve the ECL intensity needed to meet the requirements of trace analysis. Otherwise, HWRGWVC (HC-7) heptapeptide as specific antibody immobilizer for site-oriented fixation was introduced to further maintain the bioactivity of an antibody. In view of the preceding discussion, the obtained biosensor exhibited ultrahigh immune recognition to targets so that the detection limit was as low as an unprecedented value of 2.36 fg/mL, which will be of great significance to the application and development of a biosensor in the future.
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Affiliation(s)
- Yue Jia
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Lei Yang
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Jingwei Xue
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Nuo Zhang
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Dawei Fan
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Hongmin Ma
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Xiang Ren
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Lihua Hu
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Qin Wei
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
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