1
|
Wang G, Sun J, Li B, Guan F, Huang J, Dong H, Zhang J, Han J, Shen Z, Xu D, Sun X, Guo Y, Zhao S. Multiplex strategy electrochemical platform based on self-assembly dual-site DNA tetrahedral scaffold for one-step detection of diazinon and profenofos. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 868:161692. [PMID: 36682560 DOI: 10.1016/j.scitotenv.2023.161692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/14/2023] [Accepted: 01/14/2023] [Indexed: 06/17/2023]
Abstract
In the work, based on self-assembly dual-site DNA tetrahedral scaffold (DTS), thionine (Thi), and 6-(Ferrocenyl)hexanethiol (Fc6S), a multiplex strategy electrochemical platform was fabricated for the simultaneous detection of profenofos (PFF) and diazinon (DZN). Thi and Fc6S were used to label aptamers for the synthesis of probes respectively. Notably, Thi and Fc6S engendered recognizable DPV peaks at different potentials to achieve simultaneous detection of PFF and DZN. In addition to increasing the conductivity of the electrode, the combination of carboxylic acid functionalized multi-walled carbon nanotubes and ferroferric oxide nanoparticles could also increase its higher specific surface area of the electrode interface to adsorb more DTS. Because of the mechanical rigidity of the DTS, the DTS could keep a complementary chain upright and provide more binding sites for aptamers, the binding efficiency between the complementary chain and 2 binding aptamers could be improved. Comparing the aptasensors performance of single-strand DNA with that of the DTS with complementary strands, the benefits of the DTS were highlighted in this system. Under optimal conditions, the detection limits of PFF and DZN were both 3.33 pg/mL and the detection ranges were both 1.00 × 101-1.00 × 107 pg/mL. Meanwhile, the recoveries of PFF and DZN were 87.15%-117.34% and 91.20%-114.19%, respectively. The aptasensor could realize the simultaneous detection of PFF and DZN in vegetables. Furthermore, the aptasensor also had good stability and selectivity. This strategy could provide a good reference for developing effective aptasensors for the simultaneous detection of other small molecules and toxins.
Collapse
Affiliation(s)
- Guanjie Wang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China
| | - Jiashuai Sun
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China
| | - Baoxin Li
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China
| | - Fukai Guan
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China
| | - Jingcheng Huang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China
| | - Haowei Dong
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China
| | - Jiali Zhang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China
| | - Jie Han
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China
| | - Zheng Shen
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China
| | - Deyan Xu
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China
| | - Xia Sun
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China
| | - Yemin Guo
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China.
| | - Shancang Zhao
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No.266 Xincun Xilu, Zibo, Shandong 255049, China; Institute of Quality Standard and Testing Technology for Agro-Products, Shandong Academy of Agricultural Sciences, Jinan, Shandong 250100, China.
| |
Collapse
|
2
|
Wu W, Xia S, Liu Y, Ma C, Lyu Z, Zhao M, Ding S, Hu Q. Single-atom catalysts with peroxidase-like activity boost gel-sol transition-based biosensing. Biosens Bioelectron 2023; 225:115112. [PMID: 36731398 DOI: 10.1016/j.bios.2023.115112] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/24/2023] [Accepted: 01/27/2023] [Indexed: 01/30/2023]
Abstract
Gel-sol transition-based biosensors are a promising and popular alternative for portable, cost-effective, and user-friendly point-of-care testing (POCT). However, the improvement of sensitivity and practicability is highly demanded. In this work, a Fe-NC single-atom catalyst (SAC) is successfully synthesized and used as a signal amplification element for highly sensitive gel-sol transition-based biosensing. The Fe-NC SAC owns excellent peroxidase-like activity of 188 U/mg due to its definite atomically active centers and maximum atomic utilization of active metal atoms. As a proof-of-concept, the Fe-NC SAC is uniformly encapsulated in gelatin hydrogel to obtain a hydrogel sensor that allows colorimetric detection of trypsin based on gel-sol transition. The gelatin hydrogel network collapses derived from the hydrolysis by trypsin, and thereby the released Fe-NC SAC leads to the colorimetric sensing process. The designed hydrogel sensor offers a low detection limit of 1 ng/mL with a range from 1 to 100 ng/mL toward trypsin detection, exhibiting excellent selectivity and sensitivity, and well-performed practical detection in human serum. This work offers a successful paradigm for designing a promising SACs-related detection strategy and paves a new way to develop high-performance gel-sol transition-based sensors and various POCT applications.
Collapse
Affiliation(s)
- Wenli Wu
- Qilu University of Technology (Shandong Academy of Sciences), Shandong Analysis and Test Center, Jinan, 250014, China; School of Pharmaceutical Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China
| | - Shuang Xia
- Qilu University of Technology (Shandong Academy of Sciences), Shandong Analysis and Test Center, Jinan, 250014, China; School of Pharmaceutical Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China
| | - Yulin Liu
- Qilu University of Technology (Shandong Academy of Sciences), Shandong Analysis and Test Center, Jinan, 250014, China; Department of General Surgery, The First Afffliated Hospital of Shandong First Medical University, Jinan, 250014, China
| | - Chunxia Ma
- Qilu University of Technology (Shandong Academy of Sciences), Shandong Analysis and Test Center, Jinan, 250014, China; School of Pharmaceutical Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China
| | - Zhaoyuan Lyu
- School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, 99164, United States
| | - Mei Zhao
- Qilu University of Technology (Shandong Academy of Sciences), Shandong Analysis and Test Center, Jinan, 250014, China; School of Pharmaceutical Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China
| | - Shichao Ding
- School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, 99164, United States.
| | - Qiongzheng Hu
- Qilu University of Technology (Shandong Academy of Sciences), Shandong Analysis and Test Center, Jinan, 250014, China; School of Pharmaceutical Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China.
| |
Collapse
|
3
|
Liu S, Wang X, Hu QZ, Geng Y, Dong H. Paper-based flow sensor for detection of chymotrypsin and its inhibitors via viscosity change of gelatin. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.105064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
4
|
Huang S, Yao J, Ning G, Li B, Mu P, Xiao Q. Ultrasensitive ratiometric fluorescent probes for Hg( ii) and trypsin activity based on carbon dots and metalloporphyrin via a target recycling amplification strategy. Analyst 2022; 147:1457-1466. [DOI: 10.1039/d1an02287c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A ultrasensitive ratiometric fluorescent probe was developed for Hg(ii) and trypsin based on CDs and TPPS via a target recycling amplification strategy. The detection limits of Hg2+ and trypsin were 0.086 nM and 0.013 ng mL−1.
Collapse
Affiliation(s)
- Shan Huang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China
| | - Jiandong Yao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China
| | - Gan Ning
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China
| | - Bo Li
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China
| | - Pingping Mu
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China
| | - Qi Xiao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China
| |
Collapse
|
5
|
Roushani M, Zalpour N. Impedimetric ultrasensitive detection of trypsin based on hybrid aptamer-2DMIP using a glassy carbon electrode modified by nickel oxide nanoparticle. Microchem J 2022. [DOI: 10.1016/j.microc.2021.106955] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
6
|
Abstract
A new approach to on-resin detection of three model proteases (trypsin, chymotrypsin, and thrombin) has been developed, while at the same time already described methodology for simultaneous detection of two enzymes (trypsin and chymotrypsin) has been additionally generalized. Appropriate immobilized substrates, comprising specifically cleavable peptide sequences capped with fluorescent dyes, have been synthesized on Rink Amide PEGA resin or Amino PEGA resin modified with backbone amide linker (BAL). Resulting solid support-bound probes were then dispersed into Tris-HCl buffer solution (pH = 8.0) and subjected to enzymatic cleavage. Liberated fluorophores have been tracked by fluorescence measuring. The competitive activities of studied proteases towards the thrombin probe have been efficiently limited and controlled by employing a Bowman-Birk inhibitor into a system.
Collapse
|
7
|
Hu J, Liu F, Chen Y, Shangguan G, Ju H. Mass Spectrometric Biosensing: A Powerful Approach for Multiplexed Analysis of Clinical Biomolecules. ACS Sens 2021; 6:3517-3535. [PMID: 34529414 DOI: 10.1021/acssensors.1c01394] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Rapid and sensitive detection of clinical biomolecules in a multiplexed fashion is of great importance for accurate diagnosis of diseases. Mass spectrometric (MS) approaches are exceptionally suitable for clinical analysis due to its high throughput, high sensitivity, and reliable qualitative and quantitative capabilities. To break through the bottleneck of MS technique for detecting high-molecular-weight substances with low ionization efficiency, the concept of mass spectrometric biosensing has been put forward by adopting mass spectrometric chips to recognize the targets and mass spectrometry to detect the signals switched by the recognition. In this review, the principle of mass spectrometric sensing, the construction of different mass tags used for biosensing, and the typical combination mode of mass spectrometric imaging (MSI) technique are summarized. Future perspectives including the design of portable matching platforms, exploitation of novel mass tags, development of effective signal amplification strategies, and standardization of MSI methodologies are proposed to promote the advancements and practical applications of mass spectrometric biosensing.
Collapse
Affiliation(s)
- Junjie Hu
- College of Forensic Medicine and Laboratory Medicine, Jining Medical University, Jining 272067, China
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Fei Liu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yunlong Chen
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Guoqiang Shangguan
- College of Forensic Medicine and Laboratory Medicine, Jining Medical University, Jining 272067, China
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| |
Collapse
|
8
|
Yuan N, Jia L, Zhu J. Label-free Fluorescence Turn on Trypsin Assay Based on Gemini Surfactant/heparin/Nile Red Supramolecular Assembly. J Fluoresc 2021; 31:1537-1545. [PMID: 34319555 DOI: 10.1007/s10895-021-02785-2] [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: 03/04/2021] [Accepted: 07/13/2021] [Indexed: 11/24/2022]
Abstract
In this research, we designed a label-free fluorometric turn-on assay for trypsin and inhibitor screening, based on a spherical cationic gemini surfactant ethylene-bis (dodecyl dimethyl ammonium bromide) (EDAB)/heparin/Nile red (NR) supramolecular assembly system. The introduction of gemini surfactant EDAB as template greatly enhanced its salt resistance and resulted in the supramolecular assemblies with diameters ranging from 20 to 100 nm. The fluorometric assay for trypsin was performed by firstly disassembling with protamine (a heparin-binding protein) and then re-assembling through hydrolysis of protamine. The disassembly and reassembly of the system resulted in a turn-off first and then a turn-on behavior of the corresponding fluorescence. The overall processes were characterized by fluorescence spectra, TEM measurements and zeta potential tests. The detection level of this assembly system for trypsin was as low as 4.2 ng mL-1. Also, the EDAB/heparin/NR assembly could be used to screen the trypsin inhibitors. The assembly system was easily-fabricated and cost-effective, but also exhibited good salt tolerance in NaCl solution at the concentration of 0-500 mM. At last, the supramolecular assembly was successfully applied to detect trypsin in human urine, demonstrating its great potential on clinical diagnosis applications.
Collapse
Affiliation(s)
- Nan Yuan
- College of Material Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Lan Jia
- College of Material Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, P. R. China.
| | - Jingxin Zhu
- College of Material Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| |
Collapse
|
9
|
Song X, Zhao L, Luo C, Ren X, Yang L, Wei Q. Peptide-Based Biosensor with a Luminescent Copper-Based Metal-Organic Framework as an Electrochemiluminescence Emitter for Trypsin Assay. Anal Chem 2021; 93:9704-9710. [PMID: 34242018 DOI: 10.1021/acs.analchem.1c00850] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A copper-based metal-organic framework (JUC-1000) has emerged as a promising electrochemiluminescence (ECL) emitter in the domains of bioanalysis and immunoassay. Herein, a highly efficient signal "on-off" peptide-based biosensor was constructed for trypsin (TPN) assay. JUC-1000 synthesized using an organic ligand of H4BDPO was functionalized as the ECL emitter, whose cathodic ECL behavior in aqueous media was first investigated using potassium persulfate (K2S2O8) as the coreactant. To further amplify the ECL signal, highly catalytic Ag@CeO2 nanoparticles were fabricated as both a substrate and an coreaction accelerator, which can efficiently catalyze the reduction of S2O82- to generate more sulfate anion radicals (SO4•-) for ECL enhancement, thereby generating strong and stable ECL signals in a "signal on" state. The functionalized JUC-1000 emitter was connected to the Ag@CeO2 sensing layer though a heptapeptide (HWRGWVC, HGC), and TPN as the target can specifically cleave the carboxyl side of arginine residues in HGC, leading to the release of emitters in a "signal off" state. Based on the efficient signal-switching, the biosensor exhibited linear ECL responses to the added TPN concentration, realizing sensitive detection of TPN in 10 fg/mL to 100 ng/mL with a limit of detection of 3.46 fg/mL. This work proposed an attractive orientation for the fundamental research of applying transition metal-organic frameworks as ECL emitters in bioanalysis and immunoassay.
Collapse
Affiliation(s)
- Xianzhen Song
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, China
| | - Lu Zhao
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, China
| | - Chuannan Luo
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, China
| | - Xiang Ren
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, China
| | - Lei Yang
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, China
| | - Qin Wei
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, China
| |
Collapse
|
10
|
Hu Q, Su L, Chen Z, Huang Y, Qin D, Niu L. Coenzyme-Mediated Electro-RAFT Polymerization for Amplified Electrochemical Interrogation of Trypsin Activity. Anal Chem 2021; 93:9602-9608. [PMID: 34185503 DOI: 10.1021/acs.analchem.1c01766] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Trypsin is a key proteolytic enzyme in the digestive system and its abnormal levels are indicative of some pancreatic diseases. Taking advantage of the coenzyme-mediated electrografting of ferrocenyl polymers as a novel strategy for signal amplification, herein, a signal-on cleavage-based electrochemical biosensor is reported for the highly selective interrogation of trypsin activity at ultralow levels. The construction of the trypsin biosensor involves (i) the immobilization of peptide substrates (without free carboxyl groups) via the N-terminus, (ii) the tryptic cleavage of peptide substrates, (iii) the site-specific labeling of the reversible addition-fragmentation chain transfer (RAFT) agents, and (iv) the grafting of ferrocenyl polymers through the electro-RAFT (eRAFT) polymerization, which is mediated by potentiostatic reduction of nicotinamide adenine dinucleotide (NAD+) coenzymes. Through the NAD+-mediated eRAFT (NAD+-eRAFT) polymerization of ferrocenylmethyl methacrylate (FcMMA), the presence of a few tryptic cleavage events can eventually result in the recruitment of a considerable amount of ferrocene redox tags. Obviously, the NAD+-eRAFT polymerization is low-cost and easy to operate as a highly efficient strategy for signal amplification. As expected, the as-constructed biosensor is highly selective and sensitive toward the signal-on interrogation of trypsin activity. Under optimal conditions, the detection limit can be as low as 18.2 μU/mL (∼72.8 pg/mL). The results also demonstrate that the as-constructed electrochemical trypsin biosensor is applicable to inhibitor screening and the interrogation of enzyme activity in the presence of complex sample matrices. Moreover, it is low-cost, less susceptible to false-positive results, and relatively easy to fabricate, thus holding great potential in diagnostic and therapeutic applications.
Collapse
Affiliation(s)
- Qiong Hu
- Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, P. R. China
| | - Luofeng Su
- Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, P. R. China
| | - Zhuohua Chen
- Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, P. R. China
| | - Yanyu Huang
- Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, P. R. China
| | - Dongdong Qin
- Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, P. R. China
| | - Li Niu
- Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, P. R. China
| |
Collapse
|
11
|
DNA-functionalized biosensor for amplifying signal detection of DNA methyltransferase activity. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115260] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
12
|
Gao L, Shi H, Liu C, Xia N, Cheng J, Liu L. The detection of chymotrypsin using peptides covalent bound to the surface of graphene oxide and gold nanoparticles. NEW J CHEM 2021. [DOI: 10.1039/d1nj00780g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
In this study, pyrene was used as a fluorescent dye for peptides.
Collapse
Affiliation(s)
- Li Gao
- Department of Kidney Transplantation
- The Second Xiangya Hospital of Central South University
- Changsha
- P. R. China
- School of Life Sciences
| | - Haixia Shi
- P.E.department of Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Cheng Liu
- School of Life Sciences
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Ni Xia
- School of Life Sciences
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Jia Cheng
- School of Life Sciences
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Lei Liu
- Department of Kidney Transplantation
- The Second Xiangya Hospital of Central South University
- Changsha
- P. R. China
| |
Collapse
|
13
|
Impedimetric DNA E-biosensor for multiplexed sensing of Escherichia coli and its virulent f17 strains. Mikrochim Acta 2020; 187:635. [DOI: 10.1007/s00604-020-04614-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 10/21/2020] [Indexed: 11/26/2022]
|
14
|
Hu Q, Bao Y, Gan S, Zhang Y, Han D, Niu L. Electrochemically controlled grafting of polymers for ultrasensitive electrochemical assay of trypsin activity. Biosens Bioelectron 2020; 165:112358. [DOI: 10.1016/j.bios.2020.112358] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/26/2020] [Accepted: 06/01/2020] [Indexed: 12/18/2022]
|
15
|
Li Y, Liu D, Zhu C, Shen X, Liu Y, You T. Sensitivity programmable ratiometric electrochemical aptasensor based on signal engineering for the detection of aflatoxin B1 in peanut. JOURNAL OF HAZARDOUS MATERIALS 2020; 387:122001. [PMID: 31901843 DOI: 10.1016/j.jhazmat.2019.122001] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/11/2019] [Accepted: 12/29/2019] [Indexed: 06/10/2023]
Abstract
Accurately monitoring of aflatoxin B1 (AFB1), the most hazardous mycotoxin in agricultural products, is essential for the public health, but various testing demands (e.g. detection range, sensitivity) for different samples can be challenging for sensors. Here, we developed a sensitivity-programmable ratiometric electrochemical aptasensor for AFB1 analysis in peanut. Thionine functionalized reduced graphene oxide (THI-rGO) served as reference signal generator, ferrocene-labelled aptamer (Fc-apt) output the response signal. During analysis, the formation of Fc-apt-AFB1 complex led to its stripping from the electrode and faded the current intensity of Fc (IFc), while the current intensity of THI (ITHI) was enhanced. And ratiometric detection of AFB1 was achieved by using the current intensity ratio (ITHI/IFc) as quantitative signal. Compared with ratiometric strategies that highly rely on the labelled aptamers, the proposed strategy could regulate the value of ITHI/IFc by changing the modification of Fc-apt. And the detection sensitivity was found to be closely related to ITHI/IFc. Under the optimal conditions, the fabricated aptasensor with a dynamic range from 0.05-20 ng mL-1 and a detection limit of 0.016 ng mL-1 for AFB1 analysis. Besides, it exhibited excellent selectivity, reliability and reproducibility. The proposed sensitivity-programmable biosensor can be applied to detect various aptamer-recognized mycotoxins in agricultural sensing.
Collapse
Affiliation(s)
- Yuye Li
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Dong Liu
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
| | - Chengxi Zhu
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Xiuli Shen
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Yang Liu
- College of Science and Engineering, James Cook University, Townsville, Queensland 4811, Australia
| | - Tianyan You
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
| |
Collapse
|
16
|
Abstract
Chymotrypsin is one of the most extensively known proteases participating in the pathogenesis of various diseases, which can be used in drug discovery and clinical diagnosis.
Collapse
Affiliation(s)
- Haixia Shi
- P. E. Department
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Cheng Liu
- School of Life Sciences
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Jingjie Cui
- School of Automation
- Hangzhou Dianzi University
- Hangzhou
- P. R. China
| | - Jia Cheng
- School of Life Sciences
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Yuanwei Lin
- School of Life Sciences
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Li Gao
- School of Life Sciences
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Rong Luo
- Institute of Geriatric Cardiovascular Disease
- Chengdu Medical College
- Chengdu
- China
| |
Collapse
|
17
|
Han Z, Tang Z, Jiang K, Huang Q, Meng J, Nie D, Zhao Z. Dual-target electrochemical aptasensor based on co-reduced molybdenum disulfide and Au NPs (rMoS 2-Au) for multiplex detection of mycotoxins. Biosens Bioelectron 2019; 150:111894. [PMID: 31761484 DOI: 10.1016/j.bios.2019.111894] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 11/13/2019] [Accepted: 11/14/2019] [Indexed: 12/20/2022]
Abstract
Multiple mycotoxin contamination has posed health risks in the area of food safety. In this study, co-reduced molybdenum disulfide and gold nanoparticles (rMoS2-Au) were designed and used for the first time as an efficient platform endowing electrochemical electrodes with superior electron transfer rates, large surface areas and strong abilities to firmly couple with large amounts of different aptamers. After further modification with thionine (Thi) and 6-(Ferrocenyl) hexanethiol (FC6S), a platform enabling sensitive, selective and simultaneous determination of two important mycotoxins, zearalenone (ZEN) and fumonisin B1 (FB1), was achieved. The established aptasensor showed excellent linear relationships (R2 > 0.99) when ZEN and FB1 concentrations were in the range of 1 × 10-3-10 ng mL-1 and 1 × 10-3-1 × 102 ng mL-1, respectively. High sensitivity of ZEN and FB1 with a limit of detection as low as 5 × 10-4 ng mL-1 was obtained with excellent selectivity and stability. The effectiveness of the aptasensor was verified in real maize samples, and satisfactory recoveries were attained. The established platform could be easily expanded to other aptamer-based multiplex screening protocols in biochemical research and clinical diagnosis.
Collapse
Affiliation(s)
- Zheng Han
- Institute for Agro-food Standards and Testing Technology, Shanghai Key Laboratory of Protected Horticultural Technology, Laboratory of Quality and Safety Risk Assessment for Agro-products (Shanghai), Ministry of Agriculture, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
| | - Zhanmin Tang
- Institute for Agro-food Standards and Testing Technology, Shanghai Key Laboratory of Protected Horticultural Technology, Laboratory of Quality and Safety Risk Assessment for Agro-products (Shanghai), Ministry of Agriculture, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China; College of Food Science & Technology, Shanghai Ocean University, Shanghai, 201306, China
| | - Keqiu Jiang
- Institute for Agro-food Standards and Testing Technology, Shanghai Key Laboratory of Protected Horticultural Technology, Laboratory of Quality and Safety Risk Assessment for Agro-products (Shanghai), Ministry of Agriculture, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
| | - Qingwen Huang
- Institute for Agro-food Standards and Testing Technology, Shanghai Key Laboratory of Protected Horticultural Technology, Laboratory of Quality and Safety Risk Assessment for Agro-products (Shanghai), Ministry of Agriculture, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
| | - Jiajia Meng
- Institute for Agro-food Standards and Testing Technology, Shanghai Key Laboratory of Protected Horticultural Technology, Laboratory of Quality and Safety Risk Assessment for Agro-products (Shanghai), Ministry of Agriculture, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
| | - Dongxia Nie
- Institute for Agro-food Standards and Testing Technology, Shanghai Key Laboratory of Protected Horticultural Technology, Laboratory of Quality and Safety Risk Assessment for Agro-products (Shanghai), Ministry of Agriculture, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
| | - Zhihui Zhao
- Institute for Agro-food Standards and Testing Technology, Shanghai Key Laboratory of Protected Horticultural Technology, Laboratory of Quality and Safety Risk Assessment for Agro-products (Shanghai), Ministry of Agriculture, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China.
| |
Collapse
|
18
|
Hongxia C, Zaijun L, Ruiyi L, Guangli W, Zhiguo G. Molecular machine and gold/graphene quantum dot hybrid based dual amplification strategy for voltammetric detection of VEGF165. Mikrochim Acta 2019; 186:242. [PMID: 30877385 DOI: 10.1007/s00604-019-3336-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 02/23/2019] [Indexed: 10/27/2022]
Abstract
Graphene quantum dots (GQDs) were prepared via pyrolysis of citric acid and glutamic acid, then reacted with chlorauric acid to form a gold/graphene quantum dot hybrid (Au/GQD), and finally connected with hairpin DNA probe 1 (H1) and thionine (Thi). The H1-Au/GQD-Thi composite is found to be a viable redox probe for electrochemical and aptamer-based determination of vascular endothelial growth factor VEGF165. A dual amplification strategy is employed based on the use of molecular machine and the Au/GQD. Each single VEGF165 molecule can bind two DNA probes via specific aptamer-target recognition to produce a molecular machine. Surface-tethered hairpin DNA 2 (H2) hybridizes with the molecular machine through proximity effect, and the prelocked toehold domain of H2 becomes exposed. This part binds to H1-Au/GQD-Thi to release the molecular machine which then moves to the neighboring H2 upon which a surface programmatic chain reaction is initiated. By continuous molecular machine travel, many H1-Au/GQD-Thi probes are present on the gold electrode surface. This implies an efficient signal amplification capability. The Au/GQD based redox probes in-situ catalyzes the redox activity of thionine and further enhances the detection signal. The aptasensor exhibits ultrahigh sensitivity and selectivity for VEGF165. The square wave voltammetric signal, best measured at -0.18 V vs. Ag/AgCl, increases linearly in the 1.0 fM to 120 pM VEGF165 concentration range, and the detection limit is 0.3 fM. Conceivably, the method may be applied to other target proteins if the corresponding high-affinity aptamers are available. Graphical abstract This study report one dual amplification strategy for ultrasensitive electrochemical detection of VEGF165 based on gold-graphene quantum dot hybrid (Au/GQD) and bipedal molecular machine (BMM) powered surface programmatic chain reaction (SPCR).
Collapse
Affiliation(s)
- Chu Hongxia
- School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| | - Li Zaijun
- School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China.
| | - Li Ruiyi
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, China.
| | - Wang Guangli
- School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| | - Gu Zhiguo
- School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| |
Collapse
|
19
|
Tian R, Ning W, Chen M, Zhang C, Li Q, Bai J. High performance electrochemical biosensor based on 3D nitrogen-doped reduced graphene oxide electrode and tetrahedral DNA nanostructure. Talanta 2019; 194:273-281. [DOI: 10.1016/j.talanta.2018.09.110] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 09/19/2018] [Accepted: 09/30/2018] [Indexed: 02/08/2023]
|
20
|
Hijazi H, Vacher A, Groni S, Lorcy D, Levillain E, Fave C, Schöllhorn B. Electrochemically driven interfacial halogen bonding on self-assembled monolayers for anion detection. Chem Commun (Camb) 2019; 55:1983-1986. [DOI: 10.1039/c8cc08856j] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The concept of anion detection via reversible electrochemically driven charge-assisted halogen bonding in solution was transferred on the surface.
Collapse
Affiliation(s)
- Hussein Hijazi
- Laboratoire d’Electrochimie Moléculaire, UMR CNRS 7591, Université Paris Diderot
- F-75205 Paris Cedex 13
- France
| | - Antoine Vacher
- Univ Rennes, CNRS, ISCR Institut des Sciences Chimiques de Rennes – UMR 6226
- F-35000 Rennes
- France
| | - Sihem Groni
- Laboratoire d’Electrochimie Moléculaire, UMR CNRS 7591, Université Paris Diderot
- F-75205 Paris Cedex 13
- France
| | - Dominique Lorcy
- Univ Rennes, CNRS, ISCR Institut des Sciences Chimiques de Rennes – UMR 6226
- F-35000 Rennes
- France
| | - Eric Levillain
- MOLTECH Anjou, UMR CNRS 6200, Univ d'Angers, 2 Bd Lavoisier
- F-49045 ANGERS Cedex
- France
| | - Claire Fave
- Laboratoire d’Electrochimie Moléculaire, UMR CNRS 7591, Université Paris Diderot
- F-75205 Paris Cedex 13
- France
| | - Bernd Schöllhorn
- Laboratoire d’Electrochimie Moléculaire, UMR CNRS 7591, Université Paris Diderot
- F-75205 Paris Cedex 13
- France
| |
Collapse
|
21
|
Abstract
Proteases play a pivotal role in regulating important physiological processes from food digestion to blood clotting. They are also important biomarkers for many diseases such as cancers. The importance of proteases has led to extensive efforts in the screening of proteases and their inhibitors as potential drug molecules. For example, human immunodeficiency virus (HIV) patients have been treated with HIV-1 protease inhibitors to prolong the life expectancy of patients. Such a close relationship between diseases and proteases provides a strong motivation for developing sensitive, selective, and robust protease assays and sensors, which can be exploited to discover new proteases and inhibitors. In this aspect, protease assays based on levels of proteolytic activities are more relevant than protease affinity assays such as immunoassays. In this review, recent developments of protease activity assays based on different detection principles are discussed and compared. For homogenous assays, fluorescence-based techniques are the most popular due to their high sensitivity and quantitative results. However, homogeneous assays have limited multiplex sensing capabilities. In contrast, heterogeneous assays can be employed to detect multiple proteases simultaneously, given the microarray technology that is already available. Among them, electrochemical methods, surface spectroscopy techniques, and enzyme-linked peptide protease assays are commonly used. Finally, recent developments in liquid crystal (LC)-based protease assays and their applications for detecting proteases and their inhibitors are discussed.
Collapse
Affiliation(s)
| | - Kun-Lin Yang
- National University of Singapore, 4 Engineering Drive 4, Singapore 117585.
| |
Collapse
|
22
|
Cui WR, Li ZJ, Chi BZ, Li ZM, Liang RP, Qiu JD. Ultrasensitively electrochemical detection activity of DNA methyltransferase using an autocatalytic and recycling amplification strategy. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2017.12.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
23
|
Okorochenkova Y, Porubský M, Benická S, Hlaváč J. A novel three-fluorophore system as a ratiometric sensor for multiple protease detection. Chem Commun (Camb) 2018; 54:7589-7592. [DOI: 10.1039/c8cc01731j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A ratiometric fluorescent system for the detection of two proteases solely or in their mixture.
Collapse
Affiliation(s)
- Yana Okorochenkova
- Institute of Molecular and Translation Medicine
- Faculty of Medicine and Dentistry
- Palacky University
- Olomouc 779 00
- Czech Republic
| | - Martin Porubský
- Department of Organic Chemistry
- Faculty of Science
- Palacky University Olomouc
- Olomouc 771 46
- Czech Republic
| | - Sandra Benická
- Department of Organic Chemistry
- Faculty of Science
- Palacky University Olomouc
- Olomouc 771 46
- Czech Republic
| | - Jan Hlaváč
- Institute of Molecular and Translation Medicine
- Faculty of Medicine and Dentistry
- Palacky University
- Olomouc 779 00
- Czech Republic
| |
Collapse
|
24
|
Fabrication of a novel aptasensor based on three-dimensional reduced graphene oxide/polyaniline/gold nanoparticle composite as a novel platform for high sensitive and specific cocaine detection. Anal Chim Acta 2017; 996:10-19. [DOI: 10.1016/j.aca.2017.10.035] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Accepted: 10/26/2017] [Indexed: 12/11/2022]
|
25
|
Tang Z, Ma Z. Multiple functional strategies for amplifying sensitivity of amperometric immunoassay for tumor markers: A review. Biosens Bioelectron 2017; 98:100-112. [DOI: 10.1016/j.bios.2017.06.041] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 06/16/2017] [Accepted: 06/19/2017] [Indexed: 02/07/2023]
|
26
|
Yuan YH, Chi BZ, Wen SH, Liang RP, Li ZM, Qiu JD. Ratiometric electrochemical assay for sensitive detecting microRNA based on dual-amplification mechanism of duplex-specific nuclease and hybridization chain reaction. Biosens Bioelectron 2017; 102:211-216. [PMID: 29145074 DOI: 10.1016/j.bios.2017.11.030] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Revised: 10/26/2017] [Accepted: 11/07/2017] [Indexed: 01/05/2023]
Abstract
We propose a ratiometric electrochemical assay for detecting microRNA (miRNA) on the basis of dual-amplification mechanism by using distinguishable electrochemical signals from thionine (Thi) and ferrocene (Fc). The thiol-modified and ferrocene-labeled hairpin capture probes (CP) are first immobilized on an Au electrode via Au-S reaction. The target miRNA hybridizes with CP and unfolding the hairpin structure of CP to form miRNA-DNA duplexes. Then, kamchatka crab duplex specific nuclease (DSN) specifically cleaves the DNA in miRNA-DNA duplexes, leading to the release of miRNA and another cleaves cycle, meanwhile, numerous Fc leaves away from the electrode surface and leads to the signal-off of Fc. The residual fragment on electrode surface acts as a HCR primer to form dsDNA polymers through in situ HCR with the presence of the primer and two probes (HDNA and HDNA'), resulting in the capture of numerous DNA/Au NPs/Thi and the signal-on of Thi. The dual-amplification mechanism significantly amplifies the decrease of Fc signal and the increase of Thi signal for ratiometric readout (IThi/IFc), thus providing a sensitive method for the selective detection of miR-141 with a detection limit down to 11aM. The dual-signal ratiometric outputs have an intrinsic self-calibration to the effects from system, which is promising to be applied in biosensing and clinical diagnosis.
Collapse
Affiliation(s)
- Yan-Hong Yuan
- College of Chemistry and Institute for Advanced Study, Nanchang University, Nanchang 330031, China
| | - Bao-Zhu Chi
- College of Chemistry and Institute for Advanced Study, Nanchang University, Nanchang 330031, China
| | - Shao-Hua Wen
- College of Chemistry and Institute for Advanced Study, Nanchang University, Nanchang 330031, China
| | - Ru-Ping Liang
- College of Chemistry and Institute for Advanced Study, Nanchang University, Nanchang 330031, China.
| | - Zhi-Mei Li
- College of Chemistry and Institute for Advanced Study, Nanchang University, Nanchang 330031, China
| | - Jian-Ding Qiu
- College of Chemistry and Institute for Advanced Study, Nanchang University, Nanchang 330031, China; College of Materials and Chemical Engineering, Pingxiang University, Pingxiang 337055, China.
| |
Collapse
|
27
|
Hashemi P, Afkhami A, Bagheri H, Amidi S, Madrakian T. Fabrication of a novel impedimetric sensor based on l-Cysteine/Cu(II) modified gold electrode for sensitive determination of ampyra. Anal Chim Acta 2017; 984:185-192. [DOI: 10.1016/j.aca.2017.06.038] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Revised: 06/19/2017] [Accepted: 06/21/2017] [Indexed: 02/06/2023]
|
28
|
Xia T, Ma Q, Hu T, Su X. A novel magnetic/photoluminescence bifunctional nanohybrid for the determination of trypsin. Talanta 2017; 170:286-290. [DOI: 10.1016/j.talanta.2017.03.081] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 03/24/2017] [Accepted: 03/26/2017] [Indexed: 01/10/2023]
|
29
|
Simultaneously electrochemical detection of microRNAs based on multifunctional magnetic nanoparticles probe coupling with hybridization chain reaction. Biosens Bioelectron 2017. [PMID: 28622643 DOI: 10.1016/j.bios.2017.06.022] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We report a sensor combining two distinguishable magnetic nanoprobes (DNA1/Fe3O4 NPs/Thi and DNA2/Fe3O4 NPs/Fc) with target-triggered hybridization chain reaction (HCR) strategy for the simultaneous detection of microRNA-141 (miR-141) and microRNA-21 (miR-21). In the presence of targets, the thiol-modified hairpin capture probes (HCP1 and HCP2) specifically hybridize with miR-141 and miR-21 on a gold electrode, leading to the conformation change of HCP1 and HCP2, respectively. The conformation change subsequently triggers HCR to generate plentiful bonding sequences of magnetic nanoprobes. Thus, numerous thionine (Thi) modified DNA1/Fe3O4 NPs/Thi and ferrocene carboxaldehyde (Fc-CHO) modified DNA2/Fe3O4 NPs/Fc are captured by the well-designed HCR, via DNA hybridization respectively, giving rise to the dual magnified response of currents. The increase in the electrochemical currents at different potentials of the two magnetic nanoprobes enables us to simultaneously and quantitatively detect miR-141 and miR-21. Target-triggered HCR increases the amount of captured nanoprobes due to the increasing number of bonding sequences, greatly amplifying the currents of the two magnetic nanoprobes in the presence of targets, and ultimately realizing the dual signal amplification with increased sensitivity. The sensor can be applied for detecting miRNAs in cell lysates, thus, promising to be a clinic diagnosis of cancers by means of simultaneous detection of a variety of miRNA biomarkers.
Collapse
|
30
|
Hu J, Liu F, Feng N, Ju H. Peptide codes for multiple protease activity assay via high-resolution mass spectrometric quantitation. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2016; 30 Suppl 1:196-201. [PMID: 27539438 DOI: 10.1002/rcm.7631] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- Junjie Hu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Fei Liu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Nan Feng
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| |
Collapse
|
31
|
Capitao D, Sahli R, Raouafi N, Limoges B, Fave C, Schöllhorn B. Electro-assisted Deposition of Binary Self-Assembled 1,2-Dithiolane Monolayers on Gold with Predictable Composition. ChemElectroChem 2016. [DOI: 10.1002/celc.201600260] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dany Capitao
- Laboratoire d'Electrochimie Moléculaire, UMR CNRS 7591; Université Paris Diderot, Sorbonne Paris Cité, Bâtiment Lavoisier; 15 rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
| | - Rihab Sahli
- Laboratoire d'Electrochimie Moléculaire, UMR CNRS 7591; Université Paris Diderot, Sorbonne Paris Cité, Bâtiment Lavoisier; 15 rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
- Laboratoire de Chimie Analytique et d'Electrochimie; Département de Chimie, Faculté des Sciences de Tunis; Université El-Manar; 2092 Tunis El-Manar Tunisia
| | - Noureddine Raouafi
- Laboratoire de Chimie Analytique et d'Electrochimie; Département de Chimie, Faculté des Sciences de Tunis; Université El-Manar; 2092 Tunis El-Manar Tunisia
| | - Benoit Limoges
- Laboratoire d'Electrochimie Moléculaire, UMR CNRS 7591; Université Paris Diderot, Sorbonne Paris Cité, Bâtiment Lavoisier; 15 rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
| | - Claire Fave
- Laboratoire d'Electrochimie Moléculaire, UMR CNRS 7591; Université Paris Diderot, Sorbonne Paris Cité, Bâtiment Lavoisier; 15 rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
| | - Bernd Schöllhorn
- Laboratoire d'Electrochimie Moléculaire, UMR CNRS 7591; Université Paris Diderot, Sorbonne Paris Cité, Bâtiment Lavoisier; 15 rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
| |
Collapse
|
32
|
Yu P, Zhang X, Xiong E, Zhou J, Li X, Chen J. A label-free and cascaded dual-signaling amplified electrochemical aptasensing platform for sensitive prion assay. Biosens Bioelectron 2016; 85:471-478. [PMID: 27208480 DOI: 10.1016/j.bios.2016.05.047] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Revised: 04/26/2016] [Accepted: 05/13/2016] [Indexed: 01/18/2023]
Abstract
Prion proteins, as an important biomarker of prion disease, are responsible for the transmissible spongiform encephalopathies (a group of fatal neurodegenerative diseases). Hence, the sensitive detection of prion protein is very essential for biological studies and medical diagnostics. In this paper, a novel label-free and cascaded dual-signaling amplified electrochemical strategy was developed for sensitive and selective analysis of cellular prion protein (PrP(C)). The recognition elements included double-stranded DNA consisted of PrP(C)-binding aptamer (DNA1) and its partially complementary DNA (DNA2), and ordered mesoporous carbon probe (OMCP) fabricated by sealing the electroactive ferrocenecarboxylic acid (Fc) into its inner pores and then using single-stranded DNA (DNA3) as the gatekeeper. In the presence of PrP(C), DNA1 could bind the target protein and free DNA2. More importantly, DNA2 could hybridize with DNA3 to form a rigid duplex DNA and thus triggered the exonuclease III (Exo III) cleavage process to realize the DNA2 recycling, accompanied by opening more biogates and releasing more Fc. The released Fc could be further used as a competitive guest of β-cyclodextrin (β-CD) to displace the Rhodamine B (RhB) on the electrode. As a result, an amplified oxidation peak current of Fc (RhB) increased (decreased) with the increase of PrP(C) concentration. When "ΔI=ΔIFc+|ΔIRhB|" (ΔIFc and ΔIRhB were the change values of the oxidation peak currents of Fc and RhB, respectively.) was used as the response signal for quantitative determination of PrP(C), the detection limit was 7.6fM (3σ), which was much lower than that of the most reported methods for PrP(C) assay. This strategy provided a simple and sensitive approach for the detection of PrP(C) and has a great potential for bioanalysis, disease diagnostics, and clinical biomedicine applications.
Collapse
Affiliation(s)
- Peng Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Xiaohua Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China.
| | - Erhu Xiong
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Jiawan Zhou
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Xiaoyu Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Jinhua Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China.
| |
Collapse
|
33
|
Liu X, Li Y, Jia L, Chen S, Shen Y. Ultrasensitive fluorescent detection of trypsin on the basis of surfactant–protamine assembly with tunable emission wavelength. RSC Adv 2016. [DOI: 10.1039/c6ra19220c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A facile and ultrasensitive fluorometric assay for trypsin detection was successfully established on the basis of SDS/protamine/fluorescent hydrophobic dye micellar-type assemblies and enzyme-triggered disassembly.
Collapse
Affiliation(s)
- Xiang Liu
- Key Laboratory of Interface Science and Engineering in Advanced Materials
- Ministry of Education
- College of Material Science and Engineering
- Taiyuan University of Technology
- Taiyuan
| | - Yuan Li
- Hangzhou AmpleSun Solar Technology Co. Ltd
- Hangzhou
- P. R. China
| | - Lan Jia
- Key Laboratory of Interface Science and Engineering in Advanced Materials
- Ministry of Education
- College of Material Science and Engineering
- Taiyuan University of Technology
- Taiyuan
| | - Song Chen
- Key Laboratory of Interface Science and Engineering in Advanced Materials
- Ministry of Education
- College of Material Science and Engineering
- Taiyuan University of Technology
- Taiyuan
| | - Yinghua Shen
- College of Chemistry Science and Engineering
- Taiyuan University of Technology
- Taiyuan
- China
| |
Collapse
|
34
|
He Y, Sui Y, Xu S, Chen F. Au NCs-enhanced chemiluminescence from NaHSO3–H2O2 and its analytical application. RSC Adv 2016. [DOI: 10.1039/c5ra24224j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
It was found that the ultra-weak chemiluminescence (CL) emission from the sodium bisulfite (NaHSO3)–H2O2 system could be enhanced by gold nanoclusters (Au NCs).
Collapse
Affiliation(s)
- Yanyan He
- The Key Laboratory of Luminescence and Real-time Analytical Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
| | - Yanyan Sui
- The Key Laboratory of Luminescence and Real-time Analytical Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
| | | | - Funan Chen
- The Key Laboratory of Luminescence and Real-time Analytical Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
| |
Collapse
|
35
|
Ou LJ, Li XY, Li LJ, Liu HW, Sun AM, Liu KJ. A sensitive assay for trypsin using poly(thymine)-templated copper nanoparticles as fluorescent probes. Analyst 2015; 140:1871-5. [PMID: 25657995 DOI: 10.1039/c4an01994f] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A new, simple and sensitive fluorescence strategy was developed for the trypsin assay based on copper nanoparticles (CuNPs) and its different fluorescence response toward trypsin-catalyzed hydrolysis of cytochrome c (Cyt c). Polythymine (poly T)-templated CuNPs served as effective fluorescent probes. Cyt c is well-known to act as a quencher. However, herein, a low concentration of Cyt c was designed specially to act as the substrate of trypsin to avoid the quenching effects by electron transfer from Cyt c to CuNPs. In the presence of trypsin, Cyt c hydrolyzes to small peptides, releasing free cysteine residues. Nonfluorescent coordination complexes were formed upon exposure to free cysteine residues by a metal-ligand bond between Cu atoms and sulfur atoms, leading to a decreased fluorescence response to CuNPs. This novel method for the quantitative determination of trypsin has a linear detection range from 0.25 μg mL(-1) to 1000 μg mL(-1) and a relatively low detection limit of 42 ng mL(-1). To the best of our knowledge, this is the first application of the trypsin-catalyzed hydrolysis reaction of Cyt c to produce quenching effect in bioanalysis, which provided a novel approach for the biochemical sensing strategy.
Collapse
Affiliation(s)
- Li-Juan Ou
- College of Material and Chemical Engineering, Hunan Institute of Technology, Hengyang 421002, P. R. China.
| | | | | | | | | | | |
Collapse
|
36
|
Determination of trypsin activity using a gold electrode modified with a nanocover composed of graphene oxide and thionine. Mikrochim Acta 2015. [DOI: 10.1007/s00604-015-1601-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
37
|
Sun G, Yang H, Zhang Y, Yu J, Ge S, Yan M, Song X. Branched zinc oxide nanorods arrays modified paper electrode for electrochemical immunosensing by combining biocatalytic precipitation reaction and competitive immunoassay mode. Biosens Bioelectron 2015; 74:823-9. [PMID: 26232677 DOI: 10.1016/j.bios.2015.07.057] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 07/23/2015] [Accepted: 07/24/2015] [Indexed: 01/21/2023]
Abstract
Branched zinc oxide nanorods (BZR) arrays, an array with high charge carries collection efficiency and specific surface area, are grown on the reduced graphene oxide-paper working electrode for the first time to construct a paper-based electrochemical (EC) immunosensor. Typically, the BZR are fabricated via a simple hydrothermal process, which can provide abundant sites for antibodies loading. By combining the large surface area of porous zinc oxide (PZS) and good biocompatibility of gold nanoparticles (AuNPs), PZS-AuNPs (PZS@Au) nanocomposites are designed to label horseradish peroxide (HRP) and antigens. After a competitive reaction between antigens and PZS@Au nanocomposites labeled antigens, the signal labels are introduced into the immunosensor, in which, HRP participate in biocatalytic precipitation process. The produced precipitate reduces the electrode surface area and hinders the electron transfer. With the increase of concentration of antigens, the signal labels introduced into the sensor decrease, thus, a signal-on immunoassay for α-fetoprotein detection is constructed. The proposed paper-based EC immunosensor combines enzymatic biocatalytic precipitation reaction and competitive immunoassay mode for the first time, and possesses a wide linear range from 0.2 pg mL(-1) to 500 ng mL(-1) with a detection limit of 0.08 pg mL(-1). In addition, the proposed method is simple, sensitive and specific and can be a promising platform for other protein detection.
Collapse
Affiliation(s)
- Guoqiang Sun
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Hongmei Yang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Yan Zhang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Jinghua Yu
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Shenguang Ge
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China; Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan 250022, China.
| | - Mei Yan
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Xianrang Song
- Shandong Provincial Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Jinan 250117, China
| |
Collapse
|
38
|
A "signal-on'' aptasensor for simultaneous detection of chloramphenicol and polychlorinated biphenyls using multi-metal ions encoded nanospherical brushes as tracers. Biosens Bioelectron 2015. [PMID: 26210469 DOI: 10.1016/j.bios.2015.07.024] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A "signal-on'' aptasensor was developed for simultaneous detection of chloramphenicols (CAP) and polychlorinated biphenyl-72 (PCB72) with a novel multi-metal ions encoded nanospherical brushes as nanotracers. To construct the assay, the respective aptamer of CAP and PCB72 labeled magnetic gold nanoparticles as capture probes (aptamer-MGPs), and their complementary single strand DNA (s-DNA) encoded metal ions (Cd(2+) and Pb(2+)) on nanospherical branched polyethylene imine brushes as tracers (s-DNA-MSPEIs), were simultaneously synthesized. After that, the capture probe and tracers were connected through a hybridization reaction between s-DNA and aptamers. In the presence of CAP and PCB72, the analytes could react with the aptamers on capture probes and release the tracers into supernatant after magnetic separation. The released tracers with metal ions (Cd(2+) and Pb(2+)) could be simultaneously detected through the square wave voltammetry (SWV) without acid dissolution, which can switch the signals of the biosensor to "on'' state. Under optimal conditions, the assay could detect CAP and PCB72 as low as 0.3 pg mL(-1) with the dynamitic range from 0.001 to 100 ng mL(-1) and exhibited excellent selectivity. More importantly, the strategy can be extended easily to other targets after changing the corresponding aptamers and other metal ions tracers, which provides a promising and facile approach in multiplex detection of ultra-trace level of pollutants in food safety without more complex separation and washing steps.
Collapse
|
39
|
Hu J, Liu F, Ju H. Peptide Code-on-a-Microplate for Protease Activity Analysis via MALDI-TOF Mass Spectrometric Quantitation. Anal Chem 2015; 87:4409-14. [DOI: 10.1021/acs.analchem.5b00230] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Junjie Hu
- State Key Laboratory of Analytical
Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China
| | - Fei Liu
- State Key Laboratory of Analytical
Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China
| | - Huangxian Ju
- State Key Laboratory of Analytical
Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China
| |
Collapse
|
40
|
Sun G, Liu H, Zhang Y, Yu J, Yan M, Song X, He W. Gold nanorods-paper electrode based enzyme-free electrochemical immunoassay for prostate specific antigen using porous zinc oxide spheres–silver nanoparticles nanocomposites as labels. NEW J CHEM 2015. [DOI: 10.1039/c5nj00629e] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Gold nanorods-modified paper electrode and porous zinc oxide spheres–silver nanoparticles nanocomposites were used to construct an enzyme-free immunosensor.
Collapse
Affiliation(s)
- Guoqiang Sun
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- China
| | - Haiyun Liu
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- China
| | - Yan Zhang
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- China
| | - Jinghua Yu
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- China
| | - Mei Yan
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- China
| | - Xianrang Song
- Cancer Research Center
- Shandong Tumor Hospital
- Jinan 250117
- China
| | - Wenxing He
- School of Biological Sciences and Technology
- University of Jinan
- Jinan 250022
- China
| |
Collapse
|
41
|
Fan H, Kou J, Han D, Li P, Zhang D, Wu Q, He Q. Sensitive proteolysis assay based on the detection of a highly characteristic solid-state process. RSC Adv 2015. [DOI: 10.1039/c5ra05749c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This paper reported a sensitive proteolysis assay based on the detection of a highly characteristic solid-state process.
Collapse
Affiliation(s)
- Hua Fan
- Department of Hepatobiliary Surgery
- Beijing Chaoyang Hospital
- Capital Medical University
- Beijing
- P. R. China
| | - Jiantao Kou
- Department of Hepatobiliary Surgery
- Beijing Chaoyang Hospital
- Capital Medical University
- Beijing
- P. R. China
| | - Dongdong Han
- Department of Hepatobiliary Surgery
- Beijing Chaoyang Hospital
- Capital Medical University
- Beijing
- P. R. China
| | - Ping Li
- Department of Hepatobiliary Surgery
- Beijing Chaoyang Hospital
- Capital Medical University
- Beijing
- P. R. China
| | - Dong Zhang
- Department of Hepatobiliary Surgery
- Beijing Chaoyang Hospital
- Capital Medical University
- Beijing
- P. R. China
| | - Qiao Wu
- Department of Hepatobiliary Surgery
- Beijing Chaoyang Hospital
- Capital Medical University
- Beijing
- P. R. China
| | - Qiang He
- Department of Hepatobiliary Surgery
- Beijing Chaoyang Hospital
- Capital Medical University
- Beijing
- P. R. China
| |
Collapse
|