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Geng F, Liu X, Wei T, Wang Z, Liu J, Shao C, Liu G, Xu M, Feng L. An alkaline phosphatase-induced immunosensor for SARS-CoV-2 N protein and cardiac troponin I based on the in situ fluorogenic self-assembly between N-heterocyclic boronic acids and alizarin red S. SENSORS AND ACTUATORS. B, CHEMICAL 2023; 378:133121. [PMID: 36514318 PMCID: PMC9731814 DOI: 10.1016/j.snb.2022.133121] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/25/2022] [Accepted: 12/04/2022] [Indexed: 06/17/2023]
Abstract
Alkaline phosphatase (ALP)-induced in situ fluorescent immunosensor is less investigated and reported. Herein, a high-performance ALP-labeled in situ fluorescent immunoassay platform was constructed. The developed platform was based on a fluorogenic self-assembly reaction between pyridineboronic acid (PyB(OH)2) and alizarin red S (ARS). We first used density functional theory (DFT) to theoretically calculate the changes of Gibbs free energy of the used chemicals before and after the combination and simulated the electrostatic potential on its' surfaces. The free ARS and PyB(OH)2 exist alone, neither emits no fluorescence. However, the ARS/PyB(OH)2 complex emits strong fluorescence, which could be effectively quenched by PPi based on the stronger affinity between PPi and PyB(OH)2 than that of ARS and PyB(OH)2. PyB(OH)2 coordinated with ARS again in the presence of ALP due to the ALP-catalyzed hydrolysis of PPi, and correspondingly, the fluorescence was restored. We chose cTnI and SARS-CoV-2 N protein as the model antigen to construct ALP-induced immunosensor, which exhibited a wide dynamic range of 0-175 ng/mL for cTnI and SARS-CoV-2 N protein with a low limit of detection (LOD) of 0.03 ng/mL and 0.17 ng/mL, respectively. Moreover, the proposed immunosensor was used to evaluate cTnI and SARS-CoV-2 N protein level in serum with satisfactory results. Consequently, the method laid the foundation for developing novel fluorescence-based ALP-labeled ELISA technologies in the early diagnosis of diseases.
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Affiliation(s)
- Fenghua Geng
- Key Laboratory of Coal Processing & Efficient Utilization of Ministry of Education, National Engineering Research Center of Coal Preparation & Purification; School of Chemical Engineering & Technology, China University of Mining & Technology, Xuzhou 221116, China
- Henan Key Laboratory of Biomolecular Recognition & Sensing, College of Chemistry & Chemical Engineering, Henan Joint International Research Laboratory of Chemo/Biosensing & Early Diagnosis of Major Diseases, Shangqiu Normal University, Shangqiu, 476000, China
| | - Xiaoxue Liu
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Tingwen Wei
- College of Chemistry & Material Science, Huaibei Normal University, Huaibei, 235000, China
| | - Zaixue Wang
- Key Laboratory of Coal Processing & Efficient Utilization of Ministry of Education, National Engineering Research Center of Coal Preparation & Purification; School of Chemical Engineering & Technology, China University of Mining & Technology, Xuzhou 221116, China
| | - Jinhua Liu
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Congying Shao
- College of Chemistry & Material Science, Huaibei Normal University, Huaibei, 235000, China
| | - Gen Liu
- College of Chemistry & Material Science, Huaibei Normal University, Huaibei, 235000, China
| | - Maotian Xu
- Henan Key Laboratory of Biomolecular Recognition & Sensing, College of Chemistry & Chemical Engineering, Henan Joint International Research Laboratory of Chemo/Biosensing & Early Diagnosis of Major Diseases, Shangqiu Normal University, Shangqiu, 476000, China
| | - Li Feng
- Key Laboratory of Coal Processing & Efficient Utilization of Ministry of Education, National Engineering Research Center of Coal Preparation & Purification; School of Chemical Engineering & Technology, China University of Mining & Technology, Xuzhou 221116, China
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Tyagi G, Greenfield JL, Jones BE, Sharratt WN, Khan K, Seddon D, Malone LA, Cowieson N, Evans RC, Fuchter MJ, Cabral JT. Light Responsiveness and Assembly of Arylazopyrazole-Based Surfactants in Neat and Mixed CTAB Micelles. JACS AU 2022; 2:2670-2677. [PMID: 36590257 PMCID: PMC9795462 DOI: 10.1021/jacsau.2c00453] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 10/21/2022] [Accepted: 10/21/2022] [Indexed: 06/17/2023]
Abstract
The self-assembly of an arylazopyrazole-based photosurfactant (PS), based on cetyltrimethylammonium bromide (CTAB), and its mixed micelle formation with CTAB in aqueous solution was investigated by small angle neutron and X-ray scattering (SANS/SAXS) and UV-vis absorption spectroscopy. Upon UV light exposure, PS photoisomerizes from E-PS (trans) to Z-PS (cis), which transforms oblate ellipsoidal micelles into smaller, spherical micelles with larger shell thickness. Doping PS with CTAB resulted in mixed micelle formation at all stoichiometries and conditions investigated; employing selectively deuterated PS, a monotonic variation in scattering length density and dimensions of the micellar core and shell is observed for all contrasts. The concentration- and irradiance-dependence of the E to Z configurational transition was established in both neat and mixed micelles. A liposome dye release assay establishes the enhanced efficacy of photosurfactants at membrane disruption, with E-PS exhibiting a 4-fold and Z-PS a 10-fold increase in fluorescence signal with respect to pure CTAB. Our findings pave the way for external triggering and modulation of the wide range of CTAB-based biomedical and material applications.
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Affiliation(s)
- Gunjan Tyagi
- Department
of Chemical Engineering, Imperial College
London, London SW7 2AZ, U.K.
- Institute
for Molecular Science and Engineering, Imperial
College London, London SW7 2AZ, U.K.
| | - Jake L. Greenfield
- Institute
for Molecular Science and Engineering, Imperial
College London, London SW7 2AZ, U.K.
- Molecular
Sciences Research Hub, Department of Chemistry, Imperial College London, London W12 0BZ, U.K.
| | - Beatrice E. Jones
- Department
of Materials Science and Metallurgy, University
of Cambridge, Cambridge CB3 OFS, U.K.
- Diamond
Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11
0DE, U.K.
| | - William N. Sharratt
- Department
of Chemical Engineering, Imperial College
London, London SW7 2AZ, U.K.
| | - Kasim Khan
- Department
of Biology, Lund University, 22100 Lund, Sweden
| | - Dale Seddon
- Department
of Chemical Engineering, Imperial College
London, London SW7 2AZ, U.K.
| | - Lorna A. Malone
- Diamond
Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11
0DE, U.K.
| | - Nathan Cowieson
- Diamond
Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11
0DE, U.K.
| | - Rachel C. Evans
- Department
of Materials Science and Metallurgy, University
of Cambridge, Cambridge CB3 OFS, U.K.
| | - Matthew J. Fuchter
- Institute
for Molecular Science and Engineering, Imperial
College London, London SW7 2AZ, U.K.
- Molecular
Sciences Research Hub, Department of Chemistry, Imperial College London, London W12 0BZ, U.K.
| | - João T. Cabral
- Department
of Chemical Engineering, Imperial College
London, London SW7 2AZ, U.K.
- Institute
for Molecular Science and Engineering, Imperial
College London, London SW7 2AZ, U.K.
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Strasser P, Monkowius U, Teasdale I. Main group element and metal-containing polymers as photoresponsive soft materials. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124737] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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