The BAP31/miR-181a-5p/RECK axis promotes angiogenesis in colorectal cancer via fibroblast activation

被引:8
|
作者
Zhang, Qi [1 ]
Wang, Changli [1 ]
Li, Ruijia [1 ]
Liu, Jingjing [1 ]
Wang, Jiyu [1 ]
Wang, Tianyi [1 ]
Wang, Bing [1 ]
机构
[1] Northeastern Univ, Coll Life Sci & Hlth, Shenyang, Liaoning, Peoples R China
来源
FRONTIERS IN ONCOLOGY | 2023年 / 13卷
基金
中国国家自然科学基金;
关键词
BAP31; exosomes; fibroblast activation; angiogenesis; miR-181a-5p; TUMOR MICROENVIRONMENT; KAZAL MOTIFS; RECK; MATRIX-METALLOPROTEINASE-9; PROLIFERATION; CELLS; BAP31; COMMUNICATION; METASTASIS; MICRORNAS;
D O I
10.3389/fonc.2023.1056903
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
BackgroundB-cell receptor-associated protein 31 (BAP31) has been recognized as a tumor-associated protein and has largely been shown to promote metastasis in a variety of cancers. Cancer metastasis arises through multistep pathways, and the induction of angiogenesis is shown to be a rate-limiting step in the process of tumor metastasis. Methods and resultsThis study explored the effect of BAP31 on colorectal cancer (CRC) angiogenesis by regulating the tumor microenvironment. First, exosomes from BAP31-regulated CRCs affected the transition of normal fibroblasts to proangiogenic cancer-associated fibroblasts (CAFs) in vivo and in vitro. Next, microRNA sequencing was performed to analyze the microRNA expression profile of exosomes secreted from BAP31- overexpressing CRCs. The results indicated that the expression of BAP31 in CRCs significantly altered the levels of exosomal microRNAs, such as miR-181a- 5p. Meanwhile, an in vitro tube formation assay showed that fibroblasts with high levels of miR-181a-5p significantly promoted endothelial cell angiogenesis. Critically, we first identified that miR-181a-5p directly targeted the 3'-untranslated region (3 ' UTR) of reversion-inducing cysteine-rich protein with kazal motifs (RECK) using the dual-luciferase activity assay, which drove fibroblast transformation into proangiogenic CAFs by upregulating matrix metalloproteinase-9 (MMP-9) and phosphorylation of mothers against decapentaplegic homolog 2/Mothers against decapentaplegic homolog 3 (Smad2/3). ConclusionExosomes from BAP31-overexpressing/BAP31-knockdown CRCs are found to manipulate the transition of fibroblasts into proangiogenic CAFs by the miR-181a-5p/RECK axis.
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页数:11
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