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首页> 外文期刊>Cell biology international. >Cisplatin-resistant osteosarcoma cell-derived exosomes confer cisplatin resistance to recipient cells in an exosomal circ_103801-dependent manner
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Cisplatin-resistant osteosarcoma cell-derived exosomes confer cisplatin resistance to recipient cells in an exosomal circ_103801-dependent manner

机译:顺铂抗性骨肉瘤细胞衍生的外泌体在外泌体循环循环依赖性的方式中赋予Cisplatin抗受体细胞

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Studies have shown that exosomes can mediate the chemoresistance of drug-resistant cells by transmitting circular RNAs (circRNAs). However, the role of exosome-derived hsa_circ_103801 (exosomal hsa_circ_103801) in osteosarcoma (OS) remains unclear. The level of hsa_circ_103801 was upregulated in the serum exosomes from patients with OS, and OS patients with high hsa_circRNA_103801 expression had a shorter survival time relative to patients with low hsa_circ_103801 expression. The expression of hsa_circ_103801 was upregulated in cisplatin-resistant MG63 (MG63/CDDP) cells compared with that in MG63 cells. In addition, hsa_circ_103801 was highly enriched in exosomes derived from CDDP-resistant OS cells and could be delivered to MG63 and U2OS cells through exosomes. Exosomes derived from CDDP-resistant cells were shown to reduce the sensitivity of MG63 and U2OS cells to CDDP, inhibit apoptosis, and increase the expression of multidrug resistance-associated protein 1 and P-glycoprotein. Moreover, exosomal hsa_circ_103801 could strengthen the promotive effect of exosomes on the chemoresistance of MG63 and U2OS cells to CDDP. Hence, serum exosomal hsa_circ_103801 may serve as an effective prognostic biomarker for OS, and exosomal hsa_circ_103801 could be a potential target for overcoming OS chemoresistance.
机译:研究表明,外泌体可以通过传递环状RNA(CircRNA)介导耐药细胞的耐药性。然而,外源性hsa_circ_103801(外源性hsa_circ_103801)在骨肉瘤(OS)中的作用尚不清楚。OS患者血清外显体中的hsa_circ_103801水平上调,hsa_circRNA_103801高表达的OS患者的生存时间比hsa_circ_103801低表达的OS患者短。与MG63细胞相比,顺铂耐药MG63(MG63/CDDP)细胞中hsa_circ_103801的表达上调。此外,hsa_circ_103801在来源于CDDP耐药OS细胞的外显体中高度富集,并可通过外显体输送至MG63和U2OS细胞。CDDP耐药细胞的外显体可降低MG63和U2OS细胞对CDDP的敏感性,抑制细胞凋亡,并增加多药耐药相关蛋白1和P-糖蛋白的表达。此外,外显体hsa_circ_103801可以增强外显体对MG63和U2OS细胞对CDDP的耐药性的促进作用。因此,血清外体hsa_circ_103801可作为OS的有效预后生物标志物,外体hsa_circ_103801可作为克服OS化疗耐药性的潜在靶点。

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