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首页> 外文期刊>Biochimica et Biophysica Acta. Gene Regulatory Mechanisms >Colorectal cancer cell-derived microvesicles containing microRNA-1246 promote angiogenesis by activating Smad 1/5/8 signaling elicited by PML down-regulation in endothelial cells
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Colorectal cancer cell-derived microvesicles containing microRNA-1246 promote angiogenesis by activating Smad 1/5/8 signaling elicited by PML down-regulation in endothelial cells

机译:包含microRNA-1246的结直肠癌细胞源微泡通过激活内皮细胞中PML下调引起的Smad 1/5/8信号传导来促进血管生成

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Emerging studies on circulating microRNAs (miRNAs) or microvesicles (MVs) have shown the potential of them to be novel biomarkers and therapeutic targets for cancer. However, the biological roles of these miRNAs and MVs have not been validated yet. To determine the biological significance of MVs, we used human colorectal cancer cells as the MV donor and endothelial cells (HUVECs) as the MV recipient and demonstrated the transfer of colorectal cancer cell-derived MVs (CRC-MVs) to HUVECs and evaluated the roles of these MVs and their cargo in tumor angiogenesis. Consequently, the incubation of HUVECs with CRC-MVs promoted the proliferation, migration, and tube formation activities of these cells. Among the cargoes shuttled by the MVs, miR-1246 and TGF-β were considered to be responsible for the pro-angiogenic function of MVs by activating Smad 1/5/8 signaling in the HUVECs. These results suggest that colorectal cancer cells secreted MVs to contribute to tumor angiogenesis.
机译:对循环微RNA(miRNA)或微囊泡(MV)的新兴研究表明,它们有可能成为新型生物标志物和癌症的治疗靶标。但是,这些miRNA和MV的生物学作用尚未得到证实。为了确定MV的生物学意义,我们使用人类结直肠癌细胞作为MV供体,使用内皮细胞(HUVEC)作为MV受体,并证明了大肠癌细胞衍生的MV(CRC-MV)向HUVEC的转移并评估了其作用这些MV及其在肿瘤血管生成中的作用。因此,HUVEC与CRC-MV的孵育促进了这些细胞的增殖,迁移和管形成活性。在通过MV穿梭的货物中,miR-1246和TGF-β被认为通过激活HUVEC中的Smad 1/5/8信号传导而负责MV的促血管生成功能。这些结果表明,结直肠癌细胞分泌MV以促进肿瘤血管生成。

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