Commun Biol:循环细胞外小体释放致癌性miR-424

2021-02-12 AlexYang MedSci原创

细胞外小体(EVs)是细胞间信号转移的相关手段,能够促进致癌刺激的传播以及癌症患者的疾病演变和转移的扩散。

细胞外小体(EVs)是细胞间信号转移的相关手段,能够促进致癌刺激的传播以及癌症患者的疾病演变和转移的扩散

最近,有研究人员调查了前列腺癌患者循环小EV或外泌体中miR-424的释放情况,并评估了多种实验模型中的功能影响。结果表明,与原发性肿瘤和良性前列腺增生(BPH)患者相比,转移性前列腺癌患者中循环miR-424阳性EV的频率更高。在细胞系(LNCaPabl)、转基因小鼠(Pb-Cre4;Ptenflox/flox;Rosa26ERG/ERG)和患者衍生的侵袭性疾病异种移植(PDX)模型中,小EVs中miR-424的释放增强。含有miR-424的EVs促进了正常前列腺上皮细胞的干细胞样性状和肿瘤起始特性,促进了转化的前列腺上皮细胞的肿瘤发生。另外,给小鼠静脉注射miR-424阳性EV,模拟血液循环,能够在异种移植模型中促进miR-424转移和肿瘤生长。来自侵袭性原发性和转移性肿瘤患者的循环miR-424阳性EVs在处理前列腺上皮细胞时能够诱导出干细胞样特征。

miR-424促使干细胞特性和致瘤性的获得

最后,研究人员指出,他们建立了EVs介导的miR-424跨异质细胞群转移是肿瘤自我维持、疾病复发和进展的重要机制。这些发现可能为前列腺癌的护理和治疗指明了新的方法。

原始出处:

Domenico Albino, Martina Falcione, Valeria Uboldi et al. Circulating extracellular vesicles release oncogenic miR-424 in experimental models and patients with aggressive prostate cancer. Commun Biol. Jan 2021

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    2021-04-18 smallant2002
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    2021-12-11 liuli5079
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    2021-07-12 sunylz
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    2021-02-14 jambiya

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