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Hu J, He P, Zhao F, Lin W, Xue C, Chen J, Yu Z, Ran Y, Meng Y, Hong X, Shum PP, Shao L. Magnetic microspheres enhanced peanut structure cascaded lasso shaped fiber laser biosensor for cancer marker-CEACAM5 detection in serum. Talanta 2024; 271:125625. [PMID: 38244308 DOI: 10.1016/j.talanta.2024.125625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 12/30/2023] [Accepted: 01/03/2024] [Indexed: 01/22/2024]
Abstract
The detection of trace cancer markers in body fluids such as blood/serum is crucial for cancer diseases screening and treatment, which requires high sensitivity and specificity of biosensors. In this study, a peanut structure cascaded lasso (PSCL) shaped fiber sensing probe based on fiber laser demodulation method was proposed to specifically detect the carcinoembryonic antigen related cell adhesion molecules 5 (CEACAM5) protein in serum. Thanks for the narrow linewidth and high signal-to-noise ratio (SNR) of the laser spectrum, it is easier to distinguish small spectral changes than interference spectrum. Adding the antibody modified magnetic microspheres (MMS) to form the sandwich structure of "antibody-antigen-antibody-MMS", and amplified the response caused by biomolecular binding. The limit of detection (LOD) for CEACAM5 in buffer could reach 0.11 ng/mL. Considering the common threshold of 5 ng/mL for CEA during medical screening and the cut off limit of 2.5 ng/mL for some kits, the LOD of proposed biosensor meets the actual needs. Human serum samples from a hospital were used to validate the real sensing capability of proposed biosensor. The deviation between the measured value in various serum samples and the clinical value ranged from 1.9 to 9.8 %. This sensing scheme holds great potential to serve as a point of care testing (POCT) device and extend to more biosensing applications.
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Affiliation(s)
- Jie Hu
- Department of Electronic and Electrical Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Panpan He
- Medcaptain Medical Technology Co., Ltd., Shenzhen, 518055, China.
| | - Fang Zhao
- Department of Electronic and Electrical Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Weihao Lin
- Department of Electronic and Electrical Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Chenlong Xue
- Department of Electronic and Electrical Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Jinna Chen
- Department of Electronic and Electrical Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Zhiguang Yu
- Medcaptain Medical Technology Co., Ltd., Shenzhen, 518055, China.
| | - Yang Ran
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou, 510632, China.
| | - Yue Meng
- Department of Clinical Laboratory, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 511436, China.
| | - Xin Hong
- Department of Biochemistry, School of Medicine, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China; Key University Laboratory of Metabolism and Health of Guangdong, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China.
| | - Perry Ping Shum
- Department of Electronic and Electrical Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Liyang Shao
- Department of Electronic and Electrical Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
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Li Y, Hu S, Chen C, Alifu N, Zhang X, Du J, Li C, Xu L, Wang L, Dong B. Opal photonic crystal-enhanced upconversion turn-off fluorescent immunoassay for salivary CEA with oral cancer. Talanta 2023; 258:124435. [PMID: 36940576 DOI: 10.1016/j.talanta.2023.124435] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/26/2023] [Accepted: 03/07/2023] [Indexed: 03/16/2023]
Abstract
The point-of-care test of tumor markers in saliva with high specificity and sensitivity for early diagnosis of oral cancer is of great interest and significance, but remaining a daunting challenge due to the low concentration of such biomarkers in oral fluid. Herein, a turn-off biosensor based on opal photonic crystal (OPC) enhanced upconversion fluorescence is proposed to detect the carcinoembryonic antigen (CEA) in saliva by applying fluorescence resonance energy transfer sensing strategy. Hydrophilic PEI ligands are modified on upconversion nanoparticles to enhance the sensitivity of biosensor by promoting sufficient contact between saliva and detection region. As a substrate for the biosensor, OPC can also provide a local-field effect for greatly enhanced upconversion fluorescence by coupling the stop band and excitation light, and a 66-fold amplification of the upconversion fluorescence signal was obtained. For the CEA detection in spiked saliva, such sensors showed a favorable linear relationship at 0.1-2.5 ng mL-1 and more than 2.5 ng mL-1, respectively. The limit of detection was down to 0.1 ng mL-1. Moreover, by monitoring real saliva, the effective discrepancy between patients and healthy people was confirmed, indicating remarkable practical application value in clinical early diagnosis and home-based self-monitoring of tumors.
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Affiliation(s)
- Yige Li
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun, 130021, China
| | - Songtao Hu
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130021, China
| | - Cong Chen
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun, 130021, China
| | - Nuernisha Alifu
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia School of Medical Engineering and Technology, Xinjiang Medical University, Urumqi, 830011, China
| | - Xueliang Zhang
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia School of Medical Engineering and Technology, Xinjiang Medical University, Urumqi, 830011, China
| | - Juanrui Du
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun, 130021, China
| | - Chunyan Li
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun, 130021, China
| | - Lin Xu
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130021, China
| | - Lin Wang
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun, 130021, China.
| | - Biao Dong
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130021, China.
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