Proteomic Analysis of Human Umbilical Cord Serum Exosomes Using Mass Spectrometry and Preliminary Study of Their Biological Activities in Liver Cancer Cell Lines

Overview

Journal Exp Ther Med

Specialty Pathology

Date 2021 Dec 17

PMID 34917178

Authors

Donglie Zhu

Wenhui Li

Cheng Fang

Ruozhe Yin

Mingzuo Jiang

Xing Lv

Yong Chen

Affiliations

Soon will be listed here.

Abstract

Exosomes are membranous extracellular vesicles 50-100 nm in size, which are involved in cellular communication via the delivery of proteins, lipids and RNA. Emerging evidence shows that exosomes play a critical role in cancer. It has recently been revealed that maternal and umbilical cord serum (UCS)-derived exosomes may enhance endothelial cell proliferation and migration. However, the role of exosomes isolated from the human umbilical cord in cancer development has not been investigated. To explore the potential differences in the composition and function of proteins from umbilical serum exosomes (UEs) and maternal serum exosomes, a proteomic analysis of exosomes was conducted using mass spectrometry and bioinformatics. Moreover, Cell Counting Kit-8 assays and flow cytometry were used to study the biological effects of UEs on liver cancer cell lines. The present study demonstrated that UCS was enriched with proteins involved in extracellular matrix-receptor interactions, which may be closely related to cell metastasis and proliferation. The findings further indicated that exosomes derived from human umbilical serum could inhibit the viability and induce apoptosis of liver cancer cells. This suggests that UCS-derived exosomes may represent potential leads for the development of biotherapy for liver cancer.

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