1
|
Wang M, Jiang M, Ma C, Zhao C, Lai W, Li J, Wang D, Hong C, Qi Y. Construction of a Dual-Mode Immune Platform Based on the Photothermal Effect of AgCo@NC NPs for the Detection of α-Fetoprotein. Anal Chem 2023; 95:16225-16233. [PMID: 37877873 DOI: 10.1021/acs.analchem.3c03020] [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: 10/26/2023]
Abstract
Compared with the accuracy of a single signal and the limitation of environmental applicability, the application value of dual-mode detection is gradually increasing. To this end, based on the photothermal effect of Ag/Co embedded N-rich mesoporous carbon nanomaterials (AgCo@NC NPs), we designed a dual-mode signal response system for the detection of α-fetoprotein (AFP). First, AgCo@NC NPs act as a photothermal immunoprobe that converts light energy into heat driven by a near-infrared (NIR) laser and obtains temperature changes corresponding to the analyte concentration on a hand-held thermal imager. In addition, this temperature recognition system can significantly improve the efficiency of Fenton-like reactions. AgCo@NC NPs act as peroxidase mimics to initiate the generation of poly N-isopropylacrylamide (PNIPAM, resistance enhancer) by cascade catalysis and the degradation of methylene blue (MB), thus enabling electrochemical testing. The dual-mode assay ranges from 0.01 to 100 and 0.001-10 ng/mL, with lower limits of detection (LOD) of 3.2 and 0.089 pg/mL, respectively, and combines visualization, portability, and high efficiency, opening new avenues for future clinical diagnostics and inhibitor studies.
Collapse
Affiliation(s)
- Min Wang
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, P. R. China
| | - Mingzhe Jiang
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, P. R. China
| | - Chaoyun Ma
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, P. R. China
| | - Chulei Zhao
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, P. R. China
| | - Wenjing Lai
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, P. R. China
| | - Jiajia Li
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, P. R. China
| | - Dasheng Wang
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, P. R. China
| | - Chenglin Hong
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, P. R. China
| | - Yu Qi
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, P. R. China
| |
Collapse
|
2
|
Yadav S, Sadique MA, Ranjan P, Khan R. Synergistically functionalized molybdenum disulfide-reduced graphene oxide nanohybrid based ultrasensitive electrochemical immunosensor for real sample analysis of COVID-19. Anal Chim Acta 2023; 1265:341326. [PMID: 37230571 DOI: 10.1016/j.aca.2023.341326] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/04/2023] [Accepted: 05/04/2023] [Indexed: 05/27/2023]
Abstract
Herein, we have proposed a straightforward and label-free electrochemical immunosensing strategy supported on a glassy carbon electrode (GCE) modified with a biocompatible and conducting biopolymer functionalized molybdenum disulfide-reduced graphene oxide (CS-MoS2/rGO) nanohybrid to investigate the SARS-CoV-2 virus. CS-MoS2/rGO nanohybrid-based immunosensor employs recombinant SARS-CoV-2 Spike RBD protein (rSP) that specifically identifies antibodies against the SARS-CoV-2 virus via differential pulse voltammetry (DPV). The antigen-antibody interaction diminishes the current responses of the immunosensor. The obtained results indicate that the fabricated immunosensor is extraordinarily capable of highly sensitive and specific detection of the corresponding SARS-CoV-2 antibodies with a LOD of 2.38 zg mL-1 in phosphate buffer saline (PBS) samples over a broad linear range between 10 zg mL-1-100 ng mL-1. In addition, the proposed immunosensor can detect attomolar concentrations in spiked human serum samples. The performance of this immunosensor is assessed using actual serum samples from COVID-19-infected patients. The proposed immunosensor can accurately and substantially differentiate between (+) positive and (-) negative samples. As a result, the nanohybrid can provide insight into the conception of Point-of-Care Testing (POCT) platforms for cutting-edge infectious disease diagnostic methods.
Collapse
Affiliation(s)
- Shalu Yadav
- CSIR - Advanced Materials and Processes Research Institute (AMPRI), Bhopal - 462026, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
| | - Mohd Abubakar Sadique
- CSIR - Advanced Materials and Processes Research Institute (AMPRI), Bhopal - 462026, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
| | - Pushpesh Ranjan
- CSIR - Advanced Materials and Processes Research Institute (AMPRI), Bhopal - 462026, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
| | - Raju Khan
- CSIR - Advanced Materials and Processes Research Institute (AMPRI), Bhopal - 462026, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India.
| |
Collapse
|