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LIN28B increases neural crest cell migration and leads to transformation of trunk sympathoadrenal precursors

机译:Lin28b增加神经嵴细胞迁移,导致躯干同情前体的转化

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摘要

The RNA-binding protein LIN28B regulates developmental timing and determines stem cell identity by suppressing the let-7 family of microRNAs. Postembryonic reactivation of LIN28B impairs cell commitment to differentiation, prompting their transformation. In this study, we assessed the extent to which ectopic lin28b expression modulates the physiological behavior of neural crest cells (NCC) and governs their transformation in the trunk region of developing embryos. We provide evidence that the overexpression of lin28b inhibits sympathoadrenal cell differentiation and accelerates NCC migration in two vertebrate models, Xenopus leavis and Danio rerio. Our results highlight the relevance of ITGA5 and ITGA6 in the LIN28B-dependent regulation of the invasive motility of tumor cells. The results also establish that LIN28B overexpression supports neuroblastoma onset and the metastatic potential of malignant cells through let-7a-dependent and let-7a-independent mechanisms.
机译:RNA结合蛋白LIN28B通过抑制Let-7的MicroRNAS来调节发育正时并确定干细胞标识。 LIN28B的后期重新激活损害细胞承诺对分化,促使其转化。 在这项研究中,我们评估了异位LIN28B表达调节神经顶部细胞(NCC)的生理行为的程度,并治理其在发育胚胎的躯干区域的转变。 我们提供了证据表明LIN28B的过表达抑制了两种脊椎动物模型中的同情细胞分化并加速了NCC迁移,Xenopus Leavis和Danio Rerio。 我们的结果突出了ITGA5和ITGA6在Lin28B依赖性调节肿瘤细胞侵袭动力的相关性的相关性。 结果还建立了Lin28b过表达支持神经母细胞瘤的发作和恶性细胞的转移潜力通过Let-7A依赖性和Let-7A独立的机制。

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