Isolation and proteomic profiling of urinary exosomes from patients with colorectal cancer

Proteome Science

Research

Man Zhang¹  Aimin Zhao²  Kaiyu Xu²  Ling Ma²  Haijiao Yu²  Hong Gao²  Lei Ding²  Yubing Zhu² 

[1] Department of Clinical Laboratory, Beijing Shijitan Hospital Affiliated to Capital Medical University, No. 10 Tieyi Road, Haidian District, 100038, Beijing, People’s Republic of China;Department of Gastrointestinal Tumor Surgery, Beijing Shijitan Hospital Affiliated to Capital Medical University, 100038, Beijing, People’s Republic of China;

关键词: Colorectal cancer;    Urine;    Exosome;    Mass spectrometry;    Bioinformatics analysis;   

DOI  :  10.1186/s12953-023-00203-y

 received in 2022-11-22, accepted in 2023-01-18,  发布年份 2023

来源: Springer

【 摘 要 】

Exosomes in the body fluid are effective cell-derived membranous structures transferring various molecules to mediate intercellular communication. The expression of protein in the urinary exosomes from the colorectal cancer (CRC) patients could reflect the characteristics of tumorigenesis. The urinary exosomes with globular membrane structure, the size of 30 ~ 100 nm and positive expression of CD9, CD63 and CD81 were successfully isolated from 9 CRC patients and 3 heathy adults using the density gradient ultracentrifugation. Proteome profiles revealed by label-free liquid chromatography-tandem mass spectrometry (LC–MS/MS) indicated that several proteins were differentially expressed among different stages of CRC. Compared with normal controls, 67 proteins in CRC urinary exosomes were upregulated and 74 proteins were downregulated. The bioinformatics analysis revealed the decreased proteins were related to ESCRT III complex disassembly. The CHMP family was further determined to be the hub of interaction network of proteins enriched in ESCRT signaling. The significant decrease of CHMP4A, CHMP4B, CHMP2A, CHMP2B and CHMP1B were respectively found in the total CRC group and distant metastasis group compared with NC group. Moreover, the CEACAM family also showed significant aberrant changes in the urinary exosomes of CRC patients. The CEACAM7 and CEACAM1 were increased in the CRC patients compared with healthy individuals (P < 0.05). Significant changes of proteomic profile could be found in the urinary exosomes in the CRC patients. The differential expressed urinary exosomes derived proteins showed potential usage in diagnosis and prognosis of CRC.

【 授权许可】

CC BY   
© The Author(s) 2023

【 图 表 】

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