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Isolation of Structurally Heterogeneous TCR-CD3 Extracellular Vesicle Subpopulations Using Caliper Strategy |
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| Authors: | Dr. Wen Yin Dr. Haitian Chen Dr. Jianye Cai Xing Huang Dr. Lang Zhang Dr. Yuzhi Xu Dr. Jun Zheng Dr. Si-Yang Liu Prof. Xiaoyong Zou Prof. Zong Dai Prof. Yang Yang |
| Affiliation: | 1. School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen, 518107 China;2. Department of Hepatic Surgery and Liver Transplantation Center, Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630 China These authors contributed equally to this work.;3. Department of Hepatic Surgery and Liver Transplantation Center, Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630 China;4. School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen, 518107 China Guangdong Provincial Key Laboratory of Sensing Technology and Biomedical Instrument, School of Biomedical Engineering, Sun Yat-Sen University, Shenzhen, 518107 China;5. School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong, 510006 China |
| Abstract: | Cells in different states can release diverse types of extracellular vesicles (EVs) that participate in intracellular communication or pathological processes. The identification and isolation of EV subpopulations are significant to explore their physiological functions and clinical value. In this study, structurally heterogeneous T-cell receptor (TCR)-CD3 EVs were proposed and verified for the first time using a caliper strategy. Two CD3-targeting aptamers were designed in the shape of a caliper with an optimized probe distance and were assembled on gold nanoparticles (Au-Caliper) to distinguish TCR-CD3 monomeric and dimeric EVs (m/dCD3 EVs) in skin-transplanted mouse plasma. Phenotyping and sequencing analysis revealed clear heterogeneity in the isolated m/dCD3 EVs, providing the potential for mCD3 EVs as a candidate biomarker of acute cellular rejection (ACR) and holding great prospects for distinguishing EV subpopulations based on protein oligomerization states. |
| Keywords: | Acute Cellular Rejection Extracellular Vesicle Heterogeneity Subpopulation Isolation TCR-CD3 |