miR-210 transferred by lung cancer cell-derived exosomes may act as proangiogenic factor in cancer-associated fibroblasts by modulating JAK2/STAT3 pathway
Open Access
- 1 April 2020
- journal article
- research article
- Published by Portland Press Ltd. in Clinical Science
- Vol. 134 (7), 807-825
- https://doi.org/10.1042/CS20200039
Abstract
It has been generally believed that cancer-associated fibroblasts (CAFs) have the ability to 8 increase the process of tumor angiogenesis. However, the potential mechanisms by which cancer-derived exosomes in lung cancer (LC) remains to be investigated. LC-derived exosomes were administrated to NIH/3T3 cells. A variety of experiments were conducted to investigate the proangiogenic factors of CAFs, including Western blot, RT-PCR, colony formation assay, tube formation assay, Matrigel plug assay et al. In addition, the impact of JAK2/STAT3 signaling pathway were also explored. The role of hsa-miR-210 was identified with rnicroarray profiling and validated in vitro and in vivo assays. The target of miR-210 was screened by RNA pull down, RNA-sequencing and then verified. It was shown that LC-derived exosomes could induce cell reprogramming, thus promoting the fibroblasts transferring into CAFs. In addition, the exosomes with overexpressed miR-210 could increase the level of angiogenesis and vice versa, which suggested the miR-210 secreted by the LC-derived exosomes may initiate the CAF proangiogenic switch. According to our analysis, the miR-210 had the ability of elevating the expression of some proangiogenic factors such as MMP9, FGF2 and vascular endothelial growth factor (VEGF) a (VEGFa) by activating the JAK2/STAT3 signaling pathway, ten-eleven translocation 2 (TET2) was identified as the target of miR-210 in CAFs which has been involved in proangiogenic switch. miR-210 was overexpressed in serum exosomes of untreated non-small cell LC (NSCLC) patients. We concluded that the promotion effect of exosomal miR-210 on proangiogenic switch of CAFs may be explained by the modulation of JAK2/STAT3 signaling pathway and TET2 in recipient fibroblasts.This publication has 51 references indexed in Scilit:
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