Oncogene:过表达miR-200a能够促进膀胱癌浸润

2019-12-12 AlexYang MedSci原创

浸润性膀胱癌(BC)是最为致死性恶性泌尿肿瘤转移。尽管已经有研究报道miR-200a是一个致瘤性miRNA,并在子宫内膜癌中靶向PTEN基因,但是其在BC浸润过程中的生物学意义仍旧未知。最近,有研究人员发现miR-200a在人类BC组织和BBN诱导的肌肉浸润性BC组织中明显过表达。miR-200a的过表达能够特异性的通过转录上调基质金属蛋白酶(MMP)-2来促进人类BC细胞的浸润,而非迁移。机制研

浸润性膀胱癌(BC)是最为致死性恶性泌尿肿瘤转移。尽管已经有研究报道miR-200a是一个致瘤性miRNA,并在子宫内膜癌中靶向PTEN基因,但是其在BC浸润过程中的生物学意义仍旧未知。

最近,有研究人员发现miR-200a在人类BC组织和BBN诱导的肌肉浸润性BC组织中明显过表达。miR-200a的过表达能够特异性的通过转录上调基质金属蛋白酶(MMP)-2来促进人类BC细胞的浸润,而非迁移。机制研究表明了c-Jun的磷酸化能够介导MMP-2 mRNA转录水平的增加。进一步的调查阐释了Dicer在miR-200a过表达的BC细胞中减少;从而抑制miR-16成熟,并随后导致JNK2蛋白翻译和c-Jun激活的增加。总结来讲,他们的研究表明了miR-200a的过表达能够抑制Dicer的表达,反过来可以抑制miR-16的成熟和上调JNK2表达、c-Jun磷酸化、MMP-2转录和BC浸润。

最后,研究人员指出,他们的结果表明了miR-200a是一个致瘤性miRNA,是BC浸润的一个正调控因子。他们的发现在治疗浸润性BC患者新策略开发中是非常有用的。

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    2020-08-29 lq1767
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    2020-01-30 cy0324
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    2020-06-23 smallant2002
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    2019-12-14 zsyan
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    2019-12-12 留走人康

    膀胱癌真怪,明明是免疫敏感性肿瘤,为什么PD-1治疗效果不好呢?难道靶点不对?将来CD47会不会有效

    0

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