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Qiu J, Guo Q, Chu Y, Wang C, Xue H, Zhang Y, Liu H, Li G, Han L. Efficient EVs separation and detection by an alumina-nanochannel-array-membrane integrated microfluidic chip and an antibody barcode biochip. Anal Chim Acta 2024; 1304:342576. [PMID: 38637043 DOI: 10.1016/j.aca.2024.342576] [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: 01/23/2024] [Revised: 03/27/2024] [Accepted: 04/02/2024] [Indexed: 04/20/2024]
Abstract
BACKGROUND Small endosome-derived lipid nanovesicles (30-200 nm) are actively secreted by living cells and serve as pivotal biomarkers for early cancer diagnosis. However, the study of extracellular vesicles (EVs) requires isolation and purification from various body fluids. Although traditional EVs isolation and detection technologies are mature, they usually require large amount of sample, consumes long-time, and have relatively low-throughput. How to efficiently isolate, purify and detect these structurally specific EVs from body fluids with high-throughput remains a great challenge in in vitro diagnostics and clinical research. RESULTS Herein, we suggest a nanosized microfluidic device for efficient and economical EVs filtration based on an alumina nanochannel array membrane. We evaluated the filtration device performance of alumina membranes with different diameters and found that an optimized chamber array with a hydrophilic-treated channel diameter of 90 nm could realize a filtration efficiency of up to 82% without any assistance from chemical or physical separation methods. Importantly, by integrating meticulously designed multichannel microfluidic biochips, EVs can be captured in-situ and monitored by antibody barcode biochip. The proposed filtration chip together with the high-throughput detection chip were capable of filtration of a few tens of μL samples and recognition of different phonotypes. The practical filtration and detection of EVs from clinical samples demonstrated the high performance of the device. SIGNIFICANT Overall, this work provides a cost-effective, highly efficient and automated EVs filtration chip and detection dual-function integrated chip platform, which can directly separate EVs from serum or cerebrospinal fluid with an efficiency of 82% and conduct in-situ detection. This small fluidic device can provide a powerful tool for highly efficient identifying and analyzing EVs, presenting great application potential in clinical detection.
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Affiliation(s)
- Jiaoyan Qiu
- Institute of Marine Science and Technology, Shandong University, Qingdao, Shandong, 266237, China
| | - Qindong Guo
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong Key Laboratory of Brain Function Remodeling, Shandong University, Jinan, Shandong, 250012, China
| | - Yujin Chu
- Institute of Marine Science and Technology, Shandong University, Qingdao, Shandong, 266237, China
| | - Chunhua Wang
- Institute of Marine Science and Technology, Shandong University, Qingdao, Shandong, 266237, China
| | - Hao Xue
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong Key Laboratory of Brain Function Remodeling, Shandong University, Jinan, Shandong, 250012, China
| | - Yu Zhang
- Institute of Marine Science and Technology, Shandong University, Qingdao, Shandong, 266237, China
| | - Hong Liu
- State Key Laboratory of Crystal Materials, Center of Bio & Micro/Nano Functional Materials, Shandong University, Jinan, Shandong, 250100, China.
| | - Gang Li
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong Key Laboratory of Brain Function Remodeling, Shandong University, Jinan, Shandong, 250012, China.
| | - Lin Han
- Institute of Marine Science and Technology, Shandong University, Qingdao, Shandong, 266237, China.
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Ashour DS, MKh Ibrahim F, Elshamy AM, Zoghroban HS. Trichinella spiralis-derived extracellular vesicles induce a protective immunity against larval challenge in mice. Pathog Dis 2022; 80:6764719. [PMID: 36264282 DOI: 10.1093/femspd/ftac040] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 10/09/2022] [Accepted: 10/18/2022] [Indexed: 11/14/2022] Open
Abstract
Human trichinellosis is a serious disease with no effective treatment till now. Recently, the protective immunity induced by parasite-derived extracellular vesicles (EVs) are studied for some parasites such as Echinostoma caproni. The current study aimed to investigate the novel T. spiralis-derived EVs as a potential vaccine candidate for the first time in a mouse model. T. spiralis EVs were isolated and identified using transmission electron microscopy, gel electrophoresis, protein content measurements and beads-based flow cytometry. Vaccination was done by subcutaneous injection of two doses of 3.5 μg T. spiralis- derived EVs. We observed a significant reduction in T. spiralis adult worm and muscle larval counts in mice immunized with T. spiralis-derived EVs (EVs-Ts group) and controlled inflammatory changes in the intestine and muscles. The EVs-Ts group showed a higher level of IFN- γ whereas the IL-4 secretion was elevated more in the EVs group (EVs group) and showed a lower level after challenge with T. spiralis infection (EVs-Ts group). This implies a mixed Th1/Th2 immune response with obvious Th1 polarization. Moreover, elevation of serum T. spiralis-specific IgG was reported. In conclusion, this preliminary study provides T. spiralis EVs as a promising candidate for future development of anti-Trichinella vaccine.
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Affiliation(s)
- Dalia S Ashour
- Medical Parasitology Department, Faculty of Medicine, Tanta University, Egypt
| | | | - Amira M Elshamy
- Biochemistry Department, Faculty of Medicine, Tanta University, Egypt
| | - Hager S Zoghroban
- Medical Parasitology Department, Faculty of Medicine, Tanta University, Egypt
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