Electrochemiluminescence biosensor based on molybdenum disulfide-graphene quantum dots nanocomposites and DNA walker signal amplification for DNA detection

Based on the prominent electrochemiluminescence (ECL) performances of molybdenum disulfide-graphene quantum dots (MoS 2 -GQDs) nanocomposite and combined with enzyme-assisted recycling DNA walker signal amplification, an “on-off” switch ECL biosensor was proposed for sensitive assay of specific DNA...

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Published in	Mikrochimica acta (1966) Vol. 188; no. 10; p. 353
Main Authors	Sun, Yina, Huang, Chuan, Sun, Xiujin, Wang, Qian, Zhao, Peini, Ge, Shenguang, Yu, Jinghua
Format	Journal Article
Language	English
Published	Vienna Springer Vienna 01.10.2021 Springer Springer Nature B.V
Subjects	Amplification Analysis Analytical Chemistry Biosensing Techniques - methods Biosensors Characterization and Evaluation of Materials Charge transfer Chemistry Chemistry and Materials Science Detectors Disulfides - chemistry DNA DNA - chemistry DNA sequencing Electrochemical Techniques - methods Electrochemiluminescence Exodeoxyribonucleases - chemistry Exonucleases Gene sequencing Genetic research Graphene Graphite Graphite - chemistry Limit of Detection Luminescent Measurements - methods Microengineering Molybdenum Molybdenum - chemistry Molybdenum compounds Molybdenum disulfide Nanochemistry Nanocomposites Nanocomposites - chemistry Nanotechnology Nucleic Acid Amplification Techniques - methods Nucleotide sequencing Original Paper Quantum dots Quantum Dots - chemistry Signal processing Signal strength Electrochemiluminescence biosensors Molybdenum disulfide-graphene quantum dots DNA walker Signal amplification
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Abstract	Based on the prominent electrochemiluminescence (ECL) performances of molybdenum disulfide-graphene quantum dots (MoS 2 -GQDs) nanocomposite and combined with enzyme-assisted recycling DNA walker signal amplification, an “on-off” switch ECL biosensor was proposed for sensitive assay of specific DNA sequences. Noticeably, MoS 2 with two-dimensional nanosheet structure increased the loading capacity of GQDs to support abundant hairpin DNA (H). The composites of MoS 2 and GQDs facilitated the charge transfer in ECL process, which significantly improved the ECL signal to achieve an “on” state. Then, the DNA walker cyclic amplification was performed by adding the target DNA and exonuclease III (Exo III). Finally, the DNA2-Fc-DNA1 was introduced into the system as ECL signal quencher, turning the ECL signal into an “off” state. The sensitive assay of ultra-low concentration specific DNA sequences was realized according to the variation of ECL signal strength before and after the existence of target DNA. The proposed ECL biosensor showed a good linear relationship ranging from 1 nM to 100 aM with a detection limit of 25.1 aM, providing a powerful strategy for biomedical research and clinical analysis. Graphical abstract
AbstractList	Based on the prominent electrochemiluminescence (ECL) performances of molybdenum disulfide-graphene quantum dots (MoS 2 -GQDs) nanocomposite and combined with enzyme-assisted recycling DNA walker signal amplification, an “on-off” switch ECL biosensor was proposed for sensitive assay of specific DNA sequences. Noticeably, MoS 2 with two-dimensional nanosheet structure increased the loading capacity of GQDs to support abundant hairpin DNA (H). The composites of MoS 2 and GQDs facilitated the charge transfer in ECL process, which significantly improved the ECL signal to achieve an “on” state. Then, the DNA walker cyclic amplification was performed by adding the target DNA and exonuclease III (Exo III). Finally, the DNA2-Fc-DNA1 was introduced into the system as ECL signal quencher, turning the ECL signal into an “off” state. The sensitive assay of ultra-low concentration specific DNA sequences was realized according to the variation of ECL signal strength before and after the existence of target DNA. The proposed ECL biosensor showed a good linear relationship ranging from 1 nM to 100 aM with a detection limit of 25.1 aM, providing a powerful strategy for biomedical research and clinical analysis. Graphical abstract Based on the prominent electrochemiluminescence (ECL) performances of molybdenum disulfide-graphene quantum dots (MoS2-GQDs) nanocomposite and combined with enzyme-assisted recycling DNA walker signal amplification, an “on-off” switch ECL biosensor was proposed for sensitive assay of specific DNA sequences. Noticeably, MoS2 with two-dimensional nanosheet structure increased the loading capacity of GQDs to support abundant hairpin DNA (H). The composites of MoS2 and GQDs facilitated the charge transfer in ECL process, which significantly improved the ECL signal to achieve an “on” state. Then, the DNA walker cyclic amplification was performed by adding the target DNA and exonuclease III (Exo III). Finally, the DNA2-Fc-DNA1 was introduced into the system as ECL signal quencher, turning the ECL signal into an “off” state. The sensitive assay of ultra-low concentration specific DNA sequences was realized according to the variation of ECL signal strength before and after the existence of target DNA. The proposed ECL biosensor showed a good linear relationship ranging from 1 nM to 100 aM with a detection limit of 25.1 aM, providing a powerful strategy for biomedical research and clinical analysis. Based on the prominent electrochemiluminescence (ECL) performances of molybdenum disulfide-graphene quantum dots (MoS.sub.2-GQDs) nanocomposite and combined with enzyme-assisted recycling DNA walker signal amplification, an "on-off" switch ECL biosensor was proposed for sensitive assay of specific DNA sequences. Noticeably, MoS.sub.2 with two-dimensional nanosheet structure increased the loading capacity of GQDs to support abundant hairpin DNA (H). The composites of MoS.sub.2 and GQDs facilitated the charge transfer in ECL process, which significantly improved the ECL signal to achieve an "on" state. Then, the DNA walker cyclic amplification was performed by adding the target DNA and exonuclease III (Exo III). Finally, the DNA2-Fc-DNA1 was introduced into the system as ECL signal quencher, turning the ECL signal into an "off" state. The sensitive assay of ultra-low concentration specific DNA sequences was realized according to the variation of ECL signal strength before and after the existence of target DNA. The proposed ECL biosensor showed a good linear relationship ranging from 1 nM to 100 aM with a detection limit of 25.1 aM, providing a powerful strategy for biomedical research and clinical analysis. Graphical abstract Based on the prominent electrochemiluminescence (ECL) performances of molybdenum disulfide-graphene quantum dots (MoS2-GQDs) nanocomposite and combined with enzyme-assisted recycling DNA walker signal amplification, an "on-off" switch ECL biosensor was proposed for sensitive assay of specific DNA sequences. Noticeably, MoS2 with two-dimensional nanosheet structure increased the loading capacity of GQDs to support abundant hairpin DNA (H). The composites of MoS2 and GQDs facilitated the charge transfer in ECL process, which significantly improved the ECL signal to achieve an "on" state. Then, the DNA walker cyclic amplification was performed by adding the target DNA and exonuclease III (Exo III). Finally, the DNA2-Fc-DNA1 was introduced into the system as ECL signal quencher, turning the ECL signal into an "off" state. The sensitive assay of ultra-low concentration specific DNA sequences was realized according to the variation of ECL signal strength before and after the existence of target DNA. The proposed ECL biosensor showed a good linear relationship ranging from 1 nM to 100 aM with a detection limit of 25.1 aM, providing a powerful strategy for biomedical research and clinical analysis.Based on the prominent electrochemiluminescence (ECL) performances of molybdenum disulfide-graphene quantum dots (MoS2-GQDs) nanocomposite and combined with enzyme-assisted recycling DNA walker signal amplification, an "on-off" switch ECL biosensor was proposed for sensitive assay of specific DNA sequences. Noticeably, MoS2 with two-dimensional nanosheet structure increased the loading capacity of GQDs to support abundant hairpin DNA (H). The composites of MoS2 and GQDs facilitated the charge transfer in ECL process, which significantly improved the ECL signal to achieve an "on" state. Then, the DNA walker cyclic amplification was performed by adding the target DNA and exonuclease III (Exo III). Finally, the DNA2-Fc-DNA1 was introduced into the system as ECL signal quencher, turning the ECL signal into an "off" state. The sensitive assay of ultra-low concentration specific DNA sequences was realized according to the variation of ECL signal strength before and after the existence of target DNA. The proposed ECL biosensor showed a good linear relationship ranging from 1 nM to 100 aM with a detection limit of 25.1 aM, providing a powerful strategy for biomedical research and clinical analysis. Based on the prominent electrochemiluminescence (ECL) performances of molybdenum disulfide-graphene quantum dots (MoS -GQDs) nanocomposite and combined with enzyme-assisted recycling DNA walker signal amplification, an "on-off" switch ECL biosensor was proposed for sensitive assay of specific DNA sequences. Noticeably, MoS with two-dimensional nanosheet structure increased the loading capacity of GQDs to support abundant hairpin DNA (H). The composites of MoS and GQDs facilitated the charge transfer in ECL process, which significantly improved the ECL signal to achieve an "on" state. Then, the DNA walker cyclic amplification was performed by adding the target DNA and exonuclease III (Exo III). Finally, the DNA2-Fc-DNA1 was introduced into the system as ECL signal quencher, turning the ECL signal into an "off" state. The sensitive assay of ultra-low concentration specific DNA sequences was realized according to the variation of ECL signal strength before and after the existence of target DNA. The proposed ECL biosensor showed a good linear relationship ranging from 1 nM to 100 aM with a detection limit of 25.1 aM, providing a powerful strategy for biomedical research and clinical analysis.
ArticleNumber	353
Audience	Academic
Author	Huang, Chuan Yu, Jinghua Sun, Xiujin Wang, Qian Sun, Yina Ge, Shenguang Zhao, Peini
Author_xml	– sequence: 1 givenname: Yina surname: Sun fullname: Sun, Yina organization: Collaborative Innovation Center of Technology, Equipment for Biological Diagnosis, Therapy in Universities of Shandong, University of Jinan – sequence: 2 givenname: Chuan surname: Huang fullname: Huang, Chuan organization: Collaborative Innovation Center of Technology, Equipment for Biological Diagnosis, Therapy in Universities of Shandong, University of Jinan – sequence: 3 givenname: Xiujin surname: Sun fullname: Sun, Xiujin organization: Shandong Branch of China National Geological Exploration Center of Building Materials Industry – sequence: 4 givenname: Qian surname: Wang fullname: Wang, Qian organization: Collaborative Innovation Center of Technology, Equipment for Biological Diagnosis, Therapy in Universities of Shandong, University of Jinan, School of Chemistry and Chemical Engineering, University of Jinan – sequence: 5 givenname: Peini surname: Zhao fullname: Zhao, Peini email: zhaopn_1985@163.com organization: School of Chemistry and Chemical Engineering, University of Jinan – sequence: 6 givenname: Shenguang orcidid: 0000-0002-0537-6491 surname: Ge fullname: Ge, Shenguang email: chm_gesg@163.com organization: Collaborative Innovation Center of Technology, Equipment for Biological Diagnosis, Therapy in Universities of Shandong, University of Jinan – sequence: 7 givenname: Jinghua surname: Yu fullname: Yu, Jinghua organization: School of Chemistry and Chemical Engineering, University of Jinan
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Keywords	Electrochemiluminescence biosensors Molybdenum disulfide-graphene quantum dots DNA walker Signal amplification
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Snippet	Based on the prominent electrochemiluminescence (ECL) performances of molybdenum disulfide-graphene quantum dots (MoS 2 -GQDs) nanocomposite and combined with... Based on the prominent electrochemiluminescence (ECL) performances of molybdenum disulfide-graphene quantum dots (MoS -GQDs) nanocomposite and combined with... Based on the prominent electrochemiluminescence (ECL) performances of molybdenum disulfide-graphene quantum dots (MoS.sub.2-GQDs) nanocomposite and combined... Based on the prominent electrochemiluminescence (ECL) performances of molybdenum disulfide-graphene quantum dots (MoS2-GQDs) nanocomposite and combined with...
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SubjectTerms	Amplification Analysis Analytical Chemistry Biosensing Techniques - methods Biosensors Characterization and Evaluation of Materials Charge transfer Chemistry Chemistry and Materials Science Detectors Disulfides - chemistry DNA DNA - chemistry DNA sequencing Electrochemical Techniques - methods Electrochemiluminescence Exodeoxyribonucleases - chemistry Exonucleases Gene sequencing Genetic research Graphene Graphite Graphite - chemistry Limit of Detection Luminescent Measurements - methods Microengineering Molybdenum Molybdenum - chemistry Molybdenum compounds Molybdenum disulfide Nanochemistry Nanocomposites Nanocomposites - chemistry Nanotechnology Nucleic Acid Amplification Techniques - methods Nucleotide sequencing Original Paper Quantum dots Quantum Dots - chemistry Signal processing Signal strength
Title	Electrochemiluminescence biosensor based on molybdenum disulfide-graphene quantum dots nanocomposites and DNA walker signal amplification for DNA detection
URI	https://link.springer.com/article/10.1007/s00604-021-04962-3 https://www.ncbi.nlm.nih.gov/pubmed/34568991 https://www.proquest.com/docview/2576667144 https://www.proquest.com/docview/2577454192
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