A New Long Noncoding RNA ALB Regulates Autophagy by Enhancing the Transformation of LC3BI to LC3BII during Human Lens Development.

A New Long Noncoding RNA ALB Regulates Autophagy by Enhancing the Transformation of LC3BI to LC3BII during Human Lens Development.
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一种新的长非编码 RNA ALB 通过增强人类晶状体发育过程中 LC3BI 向 LC3BII 的转化来调节自噬

DOI:
10.1016/j.omtn.2017.09.011
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发表时间:
2017-12-15
期刊:
Molecular therapy. Nucleic acids
影响因子:
--
通讯作者:
Yao K
Yao K
中科院分区:
其他
文献类型:
--
作者:
Fu Q;Qin Z;Zhang L;Lyu D;Tang Q;Yin H;Chen Z;Yao K

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自噬在透镜细胞器降解中是必不可少的。本研究旨在利用“煎蛋”式晶状体体(LB)发生系统,寻找自噬相关的长链非编码RNA(lncRNA)及其在人透镜发育中的作用机制。LC3 B在分化的LB中的表达模式与在体内发育的小鼠透镜中的表达模式相似。在诱导多能干细胞(iPSC)和LB之间表达显著差异的大量lncRNA中,预测与自噬标志物LC3 B具有相关性的影响LC3 B(ALB)的lncRNA在LB中分化的透镜纤维中高度表达。这一结果与其在人胚胎晶状体中的高表达相一致,而在胚胎干细胞(ESC)中的表达则不同。此外,lncRNA ALB敲低导致LC3 BII在蛋白水平的下调,因此抑制人透镜上皮细胞(HLEC)中的自噬过程。我们的研究结果确定lncRNA ALB,一个潜在的自噬调节细胞器降解过程中的人类透镜的发展,突出了lncRNA的重要性,在透镜的发展。
Autophagy is essential in lens organelle degradation. This study aimed to seek potential autophagy-associated long noncoding RNAs (lncRNAs) and their relative mechanisms in human lens development using the “fried egg” lentoid body (LB) generation system. The expression pattern of LC3B in differentiating LBs was similar to that in developing a mouse lens in vivo. Among the massive lncRNAs expressed with a significant difference between induced pluripotent stem cells (iPSCs) and LBs, lncRNA affecting LC3B (ALB), which was predicted to have a co-relationship with the autophagy marker LC3B, was highly expressed in differentiating lens fibers in LBs. This result was consistent with its high expression in human embryonic lenses compared to those in embryonic stem cells (ESCs). Furthermore, lncRNA ALB knockdown resulted in the downregulation of LC3BII at the protein level, therefore inhibiting the autophagy process in human lens epithelial cells (HLECs). Our results identify lncRNA ALB, a potential autophagy regulator in organelle degradation during human lens development, highlighting the importance of lncRNAs in lens development.
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