1
|
Xu Y, Ma J, Dai C, Mao Z, Zhou Y. CRISPR/Cas12a-drived electrochemiluminescence and fluorescence dual-mode magnetic biosensor for sensitive detection of Pseudomonas aeruginosa based on iridium(III) complex as luminophore. Biosens Bioelectron 2024; 264:116678. [PMID: 39154508 DOI: 10.1016/j.bios.2024.116678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2024] [Revised: 07/31/2024] [Accepted: 08/14/2024] [Indexed: 08/20/2024]
Abstract
The opportunistic human pathogen Pseudomonas aeruginosa (P. aeruginosa) poses a significant threat to human health, causing sepsis, inflammation, and pneumonia, so it is crucial to devise an expeditious detection platform for the P. aeruginosa. In this work, bis (2- (3, 5- dimethylphenyl) quinoline- C2, N') (acetylacetonato) iridium (III) Ir (dmpq)2 (acac) with excellent electrochemiluminescence (ECL) and fluorescence (FL) and magnetic nanoparticles were encapsulated in silica spheres. The luminescent units exhibited equal ECL and FL properties compared with single iridium complexes, and enabled rapid separation, which was of vital significance for the establishment of biosensors with effective detection. In addition, the luminescent units were further reacted with the DNA with quenching units to obtain the signal units, and the ECL/FL dual-mode biosensor was employed with the CRISPR/Cas12a system to further improve its specific recognition ability. The ECL detection linear range of as-proposed biosensor in this work was 100 fM-10 nM with the detection limit of 73 fM (S/N = 3), and FL detection linear range was 1 pM-10 nM with the detection limit of 0.126 pM (S/N = 3). Importantly, the proposed dual-mode biosensor exhibited excellent repeatability and stability in the detection of P. aeruginosa in real samples, underscoring its potential as an alternative strategy for infection prevention and safeguarding public health and safety in the future.
Collapse
Affiliation(s)
- Yaoyao Xu
- School of Chemistry and Life Science, Jiangsu Key Laboratory for Environmental Functional Materials, Suzhou University of Science and Technology, Suzhou, Jiangsu, 215009, China
| | - Jingjing Ma
- Department of Clinical Laboratory, Children's Hospital of Nanjing Medical University, Nanjing, 210008, China
| | - Chenji Dai
- School of Chemistry and Life Science, Jiangsu Key Laboratory for Environmental Functional Materials, Suzhou University of Science and Technology, Suzhou, Jiangsu, 215009, China
| | - Ziwang Mao
- School of Chemistry and Life Science, Jiangsu Key Laboratory for Environmental Functional Materials, Suzhou University of Science and Technology, Suzhou, Jiangsu, 215009, China
| | - Yuyang Zhou
- School of Chemistry and Life Science, Jiangsu Key Laboratory for Environmental Functional Materials, Suzhou University of Science and Technology, Suzhou, Jiangsu, 215009, China.
| |
Collapse
|
2
|
Kaur J, Mirgane HA, Patil VS, Ahlawat GM, Bhosale SV, Singh PK. Expanding the scope of self-assembled supramolecular biosensors: a highly selective and sensitive enzyme-responsive AIE-based fluorescent biosensor for trypsin detection and inhibitor screening. J Mater Chem B 2024; 12:3786-3796. [PMID: 38546335 DOI: 10.1039/d4tb00264d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2024]
Abstract
Trypsin, a pancreatic enzyme associated with diseases like pancreatic cancer and cystic fibrosis, requires effective diagnostic tools. Current detection systems seldom utilize macrocyclic molecules and tetraphenyl ethylene (TPE) derivative-based supramolecular assemblies, known for their biocompatibility and aggregation-induced emission (AIE) properties, for trypsin detection. This study presents an enzyme-responsive, AIE-based fluorescence 'Turn-On' sensing platform for trypsin detection, employing sulfated-β-cyclodextrin (S-βCD), an imidazolium derivative of TPE (TPE-IM), and protamine sulfate (PrS). The anionic S-βCD and cationic TPE-IM formed a strongly fluorescent supramolecular aggregation complex in an aqueous buffer. However, PrS suppresses fluorescence because of its strong binding affinity with S-βCD. The non-fluorescent TPE-IM/S-βCD/PrS supramolecular assembly system exhibits trypsin-responsive properties, as PrS is a known trypsin substrate. Trypsin restores fluorescence in the TPE-IM/S-βCD system through the enzymatic cleavage of PrS, correlating linearly with trypsin catalytic activity in the 0-10 nM concentration range. The limit of detection is 10 pM. This work contributes to the development of self-assembled supramolecular biosensors using charged TPE derivatives and β-cyclodextrin-based host-guest chemistry, offering an innovative fluorescence 'Turn-On' trypsin sensing platform. The sensing system is highly stable under various conditions, selective for trypsin, and demonstrates potential for biological analysis and disease diagnosis in human serum. Additionally, it shows promise for the screening of trypsin inhibitors.
Collapse
Affiliation(s)
- Jasvir Kaur
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
- University Institute of Biotechnology, Chandigarh University, Panjab 140 413, India
| | - Harshad A Mirgane
- Department of Chemistry, School of Chemical Sciences, Central University of Karnataka, Kalaburagi 585367, Karnataka, India
| | - Vrushali S Patil
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
- School of Nanoscience & Technology, Shivaji University Kolhapur, Vidya Nagar, Kolhapur 416004, Maharashtra, India
| | - Geetika M Ahlawat
- University Institute of Biotechnology, Chandigarh University, Panjab 140 413, India
| | - Sheshanath V Bhosale
- Department of Chemistry, School of Chemical Sciences, Central University of Karnataka, Kalaburagi 585367, Karnataka, India
| | - Prabhat K Singh
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400085, India
| |
Collapse
|
3
|
Di Masi S, Costa M, Canfarotta F, Guerreiro A, Hartley A, Piletsky SA, Malitesta C. An impedimetric sensor based on molecularly imprinted nanoparticles for the determination of trypsin in artificial matrices - towards point-of-care diagnostics. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:742-750. [PMID: 38224108 DOI: 10.1039/d3ay01762a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
A high-performance impedimetric sensing platform was designed to detect proteins by employing molecularly imprinted polymeric nanoparticles (nanoMIPs) as selective receptors. This was achieved via the combination of the nanoMIPs with a self-assembled thioctic acid (SAM-TA) monolayer onto screen-printed gold electrodes, providing stable covalent attachment of the selective binder to the transducer. Taguchi design has been modelled to achieve the optimal level of sensor fabrication parameters and to maximise the immobilisation of nanoMIPs and their response (e.g. the response of imprinted polymers compared with the non-imprinted control). The developed sensor was tested towards a range of concentrations of trypsin dissolved in ammonium acetate (pH = 6) and showed promising applicability in artificial saliva, with a recovery percentage between 103 and 107%.
Collapse
Affiliation(s)
- Sabrina Di Masi
- Laboratorio di Chimica Analitica, DiSTeBA, Università del Salento, Edificio A6, Via per Monteroni, 73100, Lecce, Italy.
| | - Marco Costa
- Laboratorio di Chimica Analitica, DiSTeBA, Università del Salento, Edificio A6, Via per Monteroni, 73100, Lecce, Italy.
| | | | | | - Alicia Hartley
- MIP Discovery, Colworth Park, Sharnbrook, MK44 1LQ Bedford, UK.
| | - Sergey A Piletsky
- Department of Chemistry, University of Leicester, University Rd, LE1 7RH Leicester, UK
| | - Cosimino Malitesta
- Laboratorio di Chimica Analitica, DiSTeBA, Università del Salento, Edificio A6, Via per Monteroni, 73100, Lecce, Italy.
| |
Collapse
|
4
|
An eco-friendly near infrared fluorescence molecularly imprinted sensor based on zeolite imidazolate framework-8 for rapid determination of trace trypsin. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106449] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
5
|
Boosting the oxidase-like activity of platinum nanozyme in MBTH-TOOS chromogenic system for detection of trypsin and its inhibitor. Talanta 2021; 234:122647. [PMID: 34364456 DOI: 10.1016/j.talanta.2021.122647] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 06/18/2021] [Accepted: 06/21/2021] [Indexed: 11/23/2022]
Abstract
Nanozymes, as a new type of artificial enzyme, have recently become a research hotspot in the field of catalysis and biomedicine. However, the application of nanozyme is limited by catalytic activity changes of different substrates and low specificity. This work shows that citrate-capped platinum nanoparticles (Cit-PtNPs) exhibit stronger oxidase-like activity than other platinum nanozymes at different pH when 3-methyl-2-benzothiazolinonehydrazone hydrochloride (MBTH) and n-ethyl-n- (2-hydroxy-3-sulfopropyl)-m-toluidine sodium salt (TOOS) were used as chromogenic substrates. This phenomenon has important reference value for different nanozymes to choose chromogenic substrates in catalysis. In MBTH-TOOS chromogenic system, MBTH (-NH) radical is first produced during the reaction through catalytic oxidation of Cit-PtNPs, which reacts with TOOS to produce a colorless compound. The blue-purple quinoid dye was produced through the dismutation of the colorless compound. The catalytic mechanism of the oxidase-like activity of Cit-PtNPs is that two-electron reduction process and four-electron reduction process are simultaneously carried out in the catalytic process. Furthermore, to solve the problem of low specificity of metal nanozymes, protamine is designed as aggregation promoter of Cit-PtNPs and the specifichydrolysis substrate of trypsin. In this work, it can achieve one-step detection of trypsin by the boosting oxidase activity of Cit-PtNPs at pH8. The catalytic activity of Cit-PtNPs is proportional to the concentration of trypsin. The linear range for trypsin is 1.0-70.0 ngmL-1 and the limit of detection is measured to be 0.6 ngmL-1. This novel method has also been successfully applied to the detection of inhibitors and trypsin in urine samples.
Collapse
|
6
|
Kaur J, Malegaonkar JN, Bhosale SV, Singh PK. An anionic tetraphenyl ethylene based simple and rapid fluorescent probe for detection of trypsin and paraoxon methyl. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115980] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
|
7
|
Affiliation(s)
- Jasvir Kaur
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
| | - Prabhat K. Singh
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
| |
Collapse
|
8
|
Shumeiko V, Paltiel Y, Bisker G, Hayouka Z, Shoseyov O. A Paper-Based Near-Infrared Optical Biosensor for Quantitative Detection of Protease Activity Using Peptide-Encapsulated SWCNTs. SENSORS 2020; 20:s20185247. [PMID: 32937986 PMCID: PMC7570893 DOI: 10.3390/s20185247] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 09/07/2020] [Accepted: 09/08/2020] [Indexed: 12/16/2022]
Abstract
A protease is an enzyme that catalyzes proteolysis of proteins into smaller polypeptides or single amino acids. As crucial elements in many biological processes, proteases have been shown to be informative biomarkers for several pathological conditions in humans, animals, and plants. Therefore, fast, reliable, and cost-effective protease biosensors suitable for point-of-care (POC) sensing may aid in diagnostics, treatment, and drug discovery for various diseases. This work presents an affordable and simple paper-based dipstick biosensor that utilizes peptide-encapsulated single-wall carbon nanotubes (SWCNTs) for protease detection. Upon enzymatic digestion of the peptide, a significant drop in the photoluminescence (PL) of the SWCNTs was detected. As the emitted PL is in the near-infrared region, the developed biosensor has a good signal to noise ratio in biological fluids. One of the diseases associated with abnormal protease activity is pancreatitis. In acute pancreatitis, trypsin concentration could reach up to 84 µg/mL in the urine. For proof of concept, we demonstrate the feasibility of the proposed biosensor for the detection of the abnormal levels of trypsin activity in urine samples.
Collapse
Affiliation(s)
- Vlad Shumeiko
- Department of Plant Sciences and Genetics in Agriculture, Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel;
| | - Yossi Paltiel
- Center for Nanoscience and Nanotechnology, Applied Physics Department, The Hebrew University of Jerusalem, Jerusalem 9190501, Israel;
| | - Gili Bisker
- Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 6997801, Israel;
| | - Zvi Hayouka
- Institute of Biochemistry, Food Science and Nutrition, Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
- Correspondence: (Z.H.); (O.S.)
| | - Oded Shoseyov
- Department of Plant Sciences and Genetics in Agriculture, Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel;
- Correspondence: (Z.H.); (O.S.)
| |
Collapse
|
9
|
Dong ZM, Cheng L, Zhang P, Zhao GC. Label-free analytical performances of a peptide-based QCM biosensor for trypsin. Analyst 2020; 145:3329-3338. [PMID: 32207499 DOI: 10.1039/d0an00308e] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2023]
Abstract
A label-free biosensor was fabricated for the detection of trypsin by using a peptide-functionalized quartz crystal microbalance gold electrode. The synthetized peptide chains were immobilized tightly on the QCM electrode via a self-assembly method, which formed a thin and approximate rigid layer of peptides. The detection signal was achieved by calculating the mass changes on the QCM electrode because the peptide chains could be specifically cleaved in the carboxyl terminuses of arginine and lysine by trypsin. When gold nanoparticles were coupled to the peptide chains, the sensing signal would be amplified 10.9 times. Furthermore, the sensor interface shows a lower resonance resistance change when the peptide chain is immobilized horizontally. Independent detections in parallel on different electrodes have a wide linear range. Under the optimum conditions, the signal-amplified biosensor allowed the measurement of trypsin over the range of 0-750 ng mL-1 with a detection limit of 8.6 ng mL-1. Moreover, for screening the inhibitor of trypsin, the IC50 values were obtained to be 1.85 μg mL-1 for benzamidine hydrochloride and 20.5 ng mL-1 for the inhibitor from soybean.
Collapse
Affiliation(s)
- Zong-Mu Dong
- College of Environmental Science and Engineering, Anhui Normal University, Wuhu 241000, PR China.
| | | | | | | |
Collapse
|
10
|
A novel peptide-based electrochemical biosensor for the determination of a metastasis-linked protease in pancreatic cancer cells. Anal Bioanal Chem 2020; 412:6177-6188. [PMID: 31989193 DOI: 10.1007/s00216-020-02418-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 01/07/2020] [Accepted: 01/13/2020] [Indexed: 01/26/2023]
Abstract
Proteases are involved in cancer' taking part in immune (dis)regulation, malignant progression and tumour growth. Recently, it has been found that expression levels of one of the members of the serine protease family, trypsin, is upregulated in human cancer cells of several organs, being considered as a specific cancer biomarker. Considering the great attention that electrochemical peptide sensors have nowadays, in this work, we propose a novel electroanalytical strategy for the determination of this important biomolecule. It implies the immobilization of a short synthetic peptide sequence, dually labelled with fluorescein isothiocyanate (FITC) and biotin, onto neutravidin-modified magnetic beads (MBs), followed by the peptide digestion with trypsin. Upon peptide disruption, the modified MBs were incubated with a specific fluorescein Fab fragment antibody labelled with horseradish peroxidase (HRP-antiFITC) and magnetically captured on the surface of a screen-printed carbon electrode (SPCE), where amperometric detection was performed using the hydroquinone (HQ)/HRP/H2O2 system. The biosensor exhibited a good reproducibility of the measurements (RSD 3.4%, n = 10), and specificity against other proteins and proteases commonly found in biological samples. This work reports the first quantitative data so far on trypsin expression in human cell lysates. The developed bioplatform was used for the direct determination of this protease in lysates from pancreatic cancer, cervix carcinoma and kidney cells in only 3 h and 30 min using low amounts (~ 0.1 μg) of raw extracts. Graphical abstract.
Collapse
|
11
|
Ling L, Xiao C, Wang S, Guo L, Guo X. A pyrene linked peptide probe for quantitative analysis of protease activity via MALDI-TOF-MS. Talanta 2019; 200:236-241. [DOI: 10.1016/j.talanta.2019.03.055] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 02/27/2019] [Accepted: 03/14/2019] [Indexed: 12/12/2022]
|
12
|
Jodeh S, Hamed O, Melhem A, Salghi R, Jodeh D, Azzaoui K, Benmassaoud Y, Murtada K. Magnetic nanocellulose from olive industry solid waste for the effective removal of methylene blue from wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:22060-22074. [PMID: 29802610 DOI: 10.1007/s11356-018-2107-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 04/23/2018] [Indexed: 06/08/2023]
Abstract
The work shown in this article demonstrate a novel example of converting olive industry solid waste (OISW) into a magnetic cellulose nanocrystalline (MNCs) to serve as selective magnetic sorbents for methylene blue. Olive industry solid waste contains about 40% cellulose. The cellulose was extracted in a powder form from olive industry solid waste by subjecting it to a multistep pulping and bleaching process. The extracted powder cellulose was then converted to nanocrystalline cellulose (NCs) by acid hydrolysis. The NCs were then treated with a solution of FeCl3.6H2O, FeSO4, and H2O by a colloidal suspension method which produced free-flowing porous MNCs. The produced MNCs are characterized by several spectroscopic and analytical techniques such as SEM, TEM, XRD, FTIR VSM, and TGA. The efficiency of the three polymers cellulose powder, NCs, and MNCs toward extracting methylene blue (MB) from water was evaluated. Cellulose powder and NCs showed acceptable tendency for methylene blue. However, MNCs showed excellent extraction efficiency toward MB. The thermodynamic studies revealed a spontaneous adsorption of MB by MNCs at various temperatures. The spontaneous adsorption could be attributed to the electrostatic interaction and H-bonding between MNCs and MB. However, the interaction between cellulose, NCs, and MB is limited to the H-bonding.
Collapse
Affiliation(s)
- Shehdeh Jodeh
- Department of Chemistry, An-Najah National University, P.O. Box 7, Nablus, Palestine.
| | - Othman Hamed
- Department of Chemistry, An-Najah National University, P.O. Box 7, Nablus, Palestine.
| | - Abeer Melhem
- Department of Chemistry, An-Najah National University, P.O. Box 7, Nablus, Palestine
| | - Rachid Salghi
- Laboratory of Applied Chemistry and Environment, ENSA, Université Ibn Zohr, PO Box 1136, 80000, Agadir, Morocco
| | - Diana Jodeh
- Department of Human Medicine, An-Najah National University, P.O. Box 7, Nablus, Palestine
| | - Khalil Azzaoui
- Department of chemistry, Laboratory of Mineral Solid and Analytical Chemistry, Faculty of Sciences, Mohamed 1st University, Oujda, Morocco
| | - Yassine Benmassaoud
- Regional Institute for Applied Chemistry Research (IRICA), 13004, Ciudad Real, Spain
| | - Khaled Murtada
- Department of Analytical Chemistry and Food Technology, Faculty of Chemical Science and Technology, University of Castilla-La Mancha, 13071, Ciudad Real, Spain
- Regional Institute for Applied Chemistry Research (IRICA), 13004, Ciudad Real, Spain
| |
Collapse
|
13
|
Zhang S, Chen C, Qin X, Zhang Q, Liu J, Zhu J, Gao Y, Li L, Huang W. Ultrasensitive detection of trypsin activity and inhibitor screening based on the electron transfer between phosphorescence copper nanocluster and cytochrome c. Talanta 2018; 189:92-99. [PMID: 30086981 DOI: 10.1016/j.talanta.2018.06.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 05/30/2018] [Accepted: 06/09/2018] [Indexed: 11/19/2022]
Abstract
Trypsin, as one of important proteases, is specific for catalyzing the hydrolysis of peptide and ester bonds containing lysine and arginine residues at the C-terminus. The level of trypsin in biological fluids can serve as a reliable and specific diagnostic biomarker for pancreatic function and its pathological changes. Herein, we demonstrate the application of phosphorescent Cu NCs for trypsin detection for the first time depending on the electron transfer between Cu NCs and cyt c. Cyt c and Cu NCs were selected as the quencher and the fluorophore, respectively. Cu NCs could bind to the positively charged cyt c through electrostatic and hydrophobic interactions, and the phosphorescence of Cu NCs was efficiently quenched by the metal-containing heme of cyt c. In the presence of trypsin, cyt c was digested, thus phosphorescence of Cu NCs remained. Therefore, a new and continuous phosphorescence assay for the detection of trypsin activity and its inhibitor screening was established. The plot of relative fluorescence versus trypsin concentration obtains a good linear detection range from 0 to 20 ng/mL (R2 = 0.9657), and a detection limit of 2 ng/mL, which is much lower than 20 ng/mL of the sensor in buffer solution because of urine amplifying the phosphorescence signal of Cu NCs based on the FRET strategy. This assay still has been successfully applied to trypsin inhibitor screening, demonstrating its potential application in drug discovery.
Collapse
Affiliation(s)
- Shiyu Zhang
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Can Chen
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Xiaofei Qin
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Qianchen Zhang
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Jinhua Liu
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China; State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China.
| | - Jixin Zhu
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Yongqian Gao
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Lin Li
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China; Shaanxi Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an 710072, China
| |
Collapse
|
14
|
Su D, Wang M, Liu Q, Qu Z, Su X. A novel fluorescence strategy for mercury ion and trypsin activity assay based on nitrogen-doped graphene quantum dots. NEW J CHEM 2018. [DOI: 10.1039/c8nj02790k] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fluorescent detection of Hg2+ and trypsin based on trypsin-modulated competition between Hg2+, N-GQDs and HSA.
Collapse
Affiliation(s)
- Dandan Su
- Department of Analytical Chemistry, College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Mengke Wang
- Department of Analytical Chemistry, College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Qing Liu
- Department of Analytical Chemistry, College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Zhengyi Qu
- Department of Analytical Chemistry, College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Xingguang Su
- Department of Analytical Chemistry, College of Chemistry
- Jilin University
- Changchun
- P. R. China
| |
Collapse
|
15
|
Miao X, Yu H, Gu Z, Yang L, Teng J, Cao Y, Zhao J. Peptide self-assembly assisted signal labeling for an electrochemical assay of protease activity. Anal Bioanal Chem 2017; 409:6723-6730. [PMID: 29026956 DOI: 10.1007/s00216-017-0636-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Revised: 09/10/2017] [Accepted: 09/12/2017] [Indexed: 10/18/2022]
Abstract
Peptide self-assembly holds tremendous promise for a range of applications in chemistry and biology. In the work reported here, we explored the potential functions of peptide self-assembly in electrochemical bioanalysis by developing a peptide self-assembly assisted signal labeling strategy for assaying protease activity. The fundamental principle of this assay is that target-protease-catalyzed specific proteolytic cleavage blocks self-assembly between the probe peptide and signal peptide, thus preventing the signal labeling of electroactive silver nanoparticles on the electrode surface, which in turn causes the electrochemical signal to decrease. Using trypsin as an example protease target, the linear range of this assay was found to be 1 ng mL-1 to 100 mg mL-1, and its detection limit was 0.032 ng mL-1, which are better than the corresponding parameters for previously reported assays. Further experiments also highlighted the good selectivity of the assay method and demonstrated its usability when applied to serum samples. Therefore, this report not only introduces a valuable tool for assaying protease activity, but it also promotes the utilization of peptide self-assembly in electrochemical bioanalysis, as this approach has great potential for practical use in the future.
Collapse
Affiliation(s)
- Xiangyang Miao
- Department of Biological and Chemical Engineering, Suzhou Chien-shiung Institute of Technology, Taicang, Jiangsu, 215411, China.,Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, 200444, China
| | - Huizhen Yu
- Department of Biological and Chemical Engineering, Suzhou Chien-shiung Institute of Technology, Taicang, Jiangsu, 215411, China
| | - Zhun Gu
- Department of Biological and Chemical Engineering, Suzhou Chien-shiung Institute of Technology, Taicang, Jiangsu, 215411, China
| | - Lili Yang
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, 200444, China
| | - Jiahuan Teng
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, 200444, China
| | - Ya Cao
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, 200444, China.
| | - Jing Zhao
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, 200444, China.
| |
Collapse
|