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Role of miR-124 in the regulation of retinoic acid-induced Neuro-2A cell differentiation

机译:miR-124在视黄酸诱导的神经-2a细胞分化调节中的作用

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Retinoic acid can cause many types of cells, including mouse neuroblastoma Neuro-2A cells, to differentiate into neurons. However, it is still unknown whether microRNAs (miRNAs) play a role in this neuronal differentiation. To address this issue, real-time polymerase chain reaction assays were used to detect the expression of several differentiation-related miRNAs during the differentiation of retinoic acid-treated Neuro-2A cells. The results revealed that miR-124 and miR-9 were upregulated, while miR-125b was downregulated in retinoic acid-treated Neuro-2A cells. To identify the miRNA that may play a key role, miR-124 expression was regulated by transfection of miRNA mimics or inhibitors. Morphological analysis results showed that inhibition of miR-124 expression reversed the effects of retinoic acid on neurite outgrowth. Moreover, miR-124 overexpression alone caused Neuro-2A cells to differentiate into neurons, and its inhibitor could block this effect. These results suggest that miR-124 plays an important role in retinoic acid-induced differentiation of Neuro-2A cells.
机译:视黄酸可引起许多类型的细胞,包括小鼠神经母细胞瘤神经2A细胞,以区分为神经元。然而,仍然未知MicroRNAS(miRNA)是否在这种神经元分化中发挥作用。为了解决这个问题,实时聚合酶链反应测定用于检测在视黄酸处理的神经-2a细胞的分化过程中几种分化相关miRNA的表达。结果表明,上调miR-124和miR-9,而MiR-125b在视黄酸处理的神经2a细胞中下调。为了鉴定可能发挥关键作用的miRNA,通过转染miRNA模拟剂或抑制剂来调节miR-124表达。形态学分析结果表明,miR-124表达的抑制逆转了视黄酸对神经酸盐过度的影响。此外,单独的miR-124过表达导致神经2a细胞分化为神经元,其抑制剂可以阻断这种效果。这些结果表明miR-124在视网膜酸诱导的神经-2a细胞分化中起重要作用。

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