Mesenchymal stem cell-derived exosomes block malignant behaviors of hepatocellular carcinoma stem cells through a lncRNA C5orf66-AS1/microRNA-127-3p/DUSP1/ERK axis

Springer Science and Business Media LLC - Tập 34 - Trang 1812-1829 - 2021
Hao Gu1, Chao Yan2, Haijun Wan3, Lin Wu3, Junjie Liu1, Zhiqiang Zhu4, Dazhi Gao5
1Department of Liver·Laparoscopic Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, People’s Republic of China
2Department of Radiation Oncology, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, People’s Republic of China
3Department of Gastroenterology and Hepatology, Jinling Hospital Affiliated to Nanjing University School of Medicine, Nanjing, People’s Republic of China
4Department of Anorectal Surgery, Yantai Affiliated Hospital, Binzhou Medical College, Yantai, People’s Republic of China
5Department of Radiology Intervention, Jinling Hospital Affiliated to Nanjing University School of Medicine, Nanjing, People’s Republic of China

Tóm tắt

Mesenchymal stem cell (MSCs)-derived exosomes have been frequently used as useful tools in disease control. This research aimed to study the function of MSC-derived exosomes (Exo) in the stemness of cancer stem cells (CSCs) of hepatocellular carcinoma (HCC) and the molecular mechanism. Exo from the procured human bone marrow-MSCs were extracted and identified. CSCs from HCC cell lines were collected. The CSCs were treated with Exo, and then the proliferation, migration, invasion, angiogenesis-stimulating and self-renewal abilities of the Hep3B-CSCs and HuH7-CSCs were significantly reduced. C5orf66-AS1 was found as the most upregulated long noncoding RNAs (lncRNAs) in CSCs after Exo treatment. The integrated bioinformatic analyses and luciferase assays suggested that C5orf66-AS1 upregulated DUSP1 expression through sequestering microRNA-127-3p (miR-127-3p). Either artificial overexpression of miR-127-3p or silencing of DUSP1 blocked the inhibitory functions of Exo in the CSCs. DUSP1 inhibition increased the phosphorylation of ERK. Similar results were reproduced in vivo where Exo reduced the growth of xenograft formed by CSCs in nude mice, and this reduction was blocked upon miR-127-3p overexpression or DUSP1 silencing. To conclude, this research reported that MSC-derived Exo block malignant behaviors of HCC-sourced CSCs through a C5orf66-AS1/miR-127-3p/DUSP1/ERK axis.

Tài liệu tham khảo

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