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Mesenchymal stem cell-derived exosomes block malignant behaviors of hepatocellular carcinoma stem cells through a lncRNA C5orf66-AS1/microRNA-127-3p/DUSP1/ERK axis.
Human Cell ( IF 4.3 ) Pub Date : 2021-08-24 , DOI: 10.1007/s13577-021-00599-9
Hao Gu 1 , Chao Yan 2 , Haijun Wan 3 , Lin Wu 3 , Junjie Liu 1 , Zhiqiang Zhu 4 , Dazhi Gao 5
Affiliation  

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.

中文翻译:

间充质干细胞来源的外泌体通过 lncRNA C5orf66-AS1/microRNA-127-3p/DUSP1/ERK 轴阻断肝癌干细胞的恶性行为。

间充质干细胞(MSCs)衍生的外泌体经常被用作疾病控制的有用工具。本研究旨在研究MSC衍生的外泌体(Exo)在肝细胞癌(HCC)癌症干细胞(CSCs)干细胞中的作用及其分子机制。从采购的人骨髓间充质干细胞中提取和鉴定 Exo。收集来自 HCC 细胞系的 CSC。用Exo处理CSCs后,Hep3B-CSCs和HuH7-CSCs的增殖、迁移、侵袭、血管生成刺激和自我更新能力显着降低。在 Exo 处理后,C5orf66-AS1 被发现是 CSCs 中上调最多的长链非编码 RNA (lncRNA)。综合生物信息学分析和荧光素酶测定表明,C5orf66-AS1 通过隔离 microRNA-127-3p (miR-127-3p) 上调 DUSP1 表达。miR-127-3p 的人工过表达或 DUSP1 的沉默都阻断了 Exo 在 CSC 中的抑制功能。DUSP1 抑制增加了 ERK 的磷酸化。在体内重现了类似的结果,其中 Exo 减少了裸鼠中 CSC 形成的异种移植物的生长,并且这种减少在 miR-127-3p 过表达或 DUSP1 沉默后被阻断。总之,本研究报告称,MSC 衍生的 Exo 通过 C5orf66-AS1/miR-127-3p/DUSP1/ERK 轴阻断 HCC 来源的 CSC 的恶性行为。DUSP1 抑制增加了 ERK 的磷酸化。在体内重现了类似的结果,其中 Exo 减少了裸鼠中 CSC 形成的异种移植物的生长,并且这种减少在 miR-127-3p 过表达或 DUSP1 沉默后被阻断。总之,本研究报告称,MSC 衍生的 Exo 通过 C5orf66-AS1/miR-127-3p/DUSP1/ERK 轴阻断 HCC 来源的 CSC 的恶性行为。DUSP1 抑制增加了 ERK 的磷酸化。在体内重现了类似的结果,其中 Exo 减少了裸鼠中 CSC 形成的异种移植物的生长,并且这种减少在 miR-127-3p 过表达或 DUSP1 沉默后被阻断。总之,本研究报告称,MSC 衍生的 Exo 通过 C5orf66-AS1/miR-127-3p/DUSP1/ERK 轴阻断 HCC 来源的 CSC 的恶性行为。
更新日期:2021-08-24
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