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Li J, Li Y, Chen S, Duan W, Kong X, Wang Y, Zhou L, Li P, Zhang C, Du L, Wang C. Highly Sensitive Exosome Detection for Early Diagnosis of Pancreatic Cancer Using Immunoassay Based on Hierarchical Surface-Enhanced Raman Scattering Substrate. Small Methods 2022; 6:e2200154. [PMID: 35460217 DOI: 10.1002/smtd.202200154] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 03/12/2022] [Indexed: 06/14/2023]
Abstract
Exosomes have emerged as potential biomarkers for pancreatic cancer (PaC). However, it is still challenging to get quantitative detection of exosomes with the specific surface receptors. In this study, a highly sensitive detection system is first constructed for the direct quantitation of specific exosomes in real samples using hierarchical surface-enhanced Raman scattering substrate (H-SERS substrate) and rapid enrichment strategy magnetic beads @ exosomes @ SERS detection probes (MEDP). It is found that the detection system (MEDP @ H-SERS substrate) could provide a 3.5 times higher SERS intensity compared with MEDP sandwich immunocomplex only. Moreover, LRG1-positive exosomes (LRG1-Exos) and GPC1-positive exosomes (GPC1-Exos) are chosen to distinguish PaC through exosome proteomics and database screening. The lower limit of detection (LOD) is 15 particles µL-1 using the MEDP @ H-SERS substrate. Significantly, the detection in clinical samples shows that the innovative combination of LRG1-Exos and GPC1-Exos could improve the diagnostic efficiency of PaC, with an area under the operating characteristic curve (AUC) of 0.95. Even for the early-stage PaC, the diagnostic accuracy is still high (AUC = 0.95). Collectively, the findings indicate that the MEDP @ H-SERS substrate has great potential for the early diagnosis of PaC.
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Affiliation(s)
- Juan Li
- Department of Clinical Laboratory, The Second Hospital, Cheeloo College of Medicine, Shandong University, No. 247, Beiyuan Street, Jinan, 250033, China
| | - Yanru Li
- Department of Clinical Laboratory, The Second Hospital, Cheeloo College of Medicine, Shandong University, No. 247, Beiyuan Street, Jinan, 250033, China
| | - Shuai Chen
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, No. 17923, Jingshi Road Jinan, Shandong, 250061, China
| | - Weili Duan
- Department of Clinical Laboratory, The Second Hospital, Cheeloo College of Medicine, Shandong University, No. 247, Beiyuan Street, Jinan, 250033, China
| | - Xue Kong
- Department of Clinical Laboratory, The Second Hospital, Cheeloo College of Medicine, Shandong University, No. 247, Beiyuan Street, Jinan, 250033, China
| | - Yunshan Wang
- Department of Clinical Laboratory, The Second Hospital, Cheeloo College of Medicine, Shandong University, No. 247, Beiyuan Street, Jinan, 250033, China
| | - Lianqun Zhou
- CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, No. 88, Keling Road Suzhou, Suzhou, 215163, China
| | - Peilong Li
- Department of Clinical Laboratory, The Second Hospital, Cheeloo College of Medicine, Shandong University, No. 247, Beiyuan Street, Jinan, 250033, China
| | - Chengpeng Zhang
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, No. 17923, Jingshi Road Jinan, Shandong, 250061, China
| | - Lutao Du
- Department of Clinical Laboratory, The Second Hospital, Cheeloo College of Medicine, Shandong University, No. 247, Beiyuan Street, Jinan, 250033, China
- Shandong Engineering & Technology Research Center for Tumor Marker Detection, The Second Hospital of Shandong University, No. 247, Beiyuan Street, Jinan, 250033, China
- Shandong Provincial Clinical Medicine Research Center for Clinical Laboratory, The Second Hospital of Shandong University, No. 247, Beiyuan Street, Jinan, 250033, China
| | - Chuanxin Wang
- Department of Clinical Laboratory, The Second Hospital, Cheeloo College of Medicine, Shandong University, No. 247, Beiyuan Street, Jinan, 250033, China
- Shandong Engineering & Technology Research Center for Tumor Marker Detection, The Second Hospital of Shandong University, No. 247, Beiyuan Street, Jinan, 250033, China
- Shandong Provincial Clinical Medicine Research Center for Clinical Laboratory, The Second Hospital of Shandong University, No. 247, Beiyuan Street, Jinan, 250033, China
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