A circular intronic RNA ciPVT1 delays endothelial cell senescence by regulating the miR-24-3p/CDK4/pRb axis.

A circular intronic RNA ciPVT1 delays endothelial cell senescence by regulating the miR-24-3p/CDK4/pRb axis.
复制标题

环状内含子 RNA ciPVT1 通过调节 miR-24-3p/CDK4/pRb 轴延缓内皮细胞衰老

DOI:
10.1111/acel.13529
复制
发表时间:
2022-01
期刊:
影响因子:
7.8
通讯作者:
Xiong XD
Xiong XD
中科院分区:
生物学1区
文献类型:
--
作者:
Min X;Cai MY;Shao T;Xu ZY;Liao Z;Liu DL;Zhou MY;Wu WP;Zhou YL;Mo MH;Xu S;Liu X;Xiong XD

文献摘要

参考文献

被引文献

相似文献

已经确定环状RNA(circRNA)参与人类基因组中的许多过程,但它们在血管老化中的功能在很大程度上仍然未知。在这项研究中,我们的目的是表征和分析的功能的环状内含子RNA,ciPVT 1,在内皮细胞衰老。我们观察到衰老内皮细胞中ciPVT 1的显著下调。在增殖的内皮细胞中,ciPVT 1敲低诱导了类似过早衰老的表型,抑制了增殖,并导致血管生成受损。体内血管生成塞测定显示,ciPVT 1沉默显著抑制内皮管形成并降低血红蛋白含量。相反,在老年内皮细胞中过表达ciPVT 1延迟衰老,促进增殖,并增加血管生成活性。机制研究表明,ciPVT 1可以海绵miR-24 - 3 p上调CDK 4的表达,导致Rb磷酸化增强。此外,ciPVT 1的强制表达逆转了miR-24 - 3 p在内皮细胞中的衰老诱导作用。总之,本研究揭示了ciPVT 1在调节内皮细胞衰老中的关键作用,并可能对寻找对抗年龄相关血管病变发展的策略具有重要意义。我们表征了一种新的环状内含子RNA ciPVT 1,其来源于PVT 1基因的内含子4,在衰老的内皮细胞中显著减少。进一步的功能和机制研究表明,ciPVT 1可能作为竞争性内源性RNA(ceRNA)通过诱骗miR-24 - 3 p来调节CDK 4及其下游基因,从而延缓内皮细胞衰老。
Circular RNAs (circRNAs) have been established to be involved in numerous processes in the human genome, but their function in vascular aging remains largely unknown. In this study, we aimed to characterize and analyze the function of a circular intronic RNA, ciPVT1, in endothelial cell senescence. We observed significant downregulation of ciPVT1 in senescent endothelial cells. In proliferating endothelial cells, ciPVT1 knockdown induced a premature senescence‐like phenotype, inhibited proliferation, and led to an impairment in angiogenesis. An in vivo angiogenic plug assay revealed that ciPVT1 silencing significantly inhibited endothelial tube formation and decreased hemoglobin content. Conversely, overexpression of ciPVT1 in old endothelial cells delayed senescence, promoted proliferation, and increased angiogenic activity. Mechanistic studies revealed that ciPVT1 can sponge miR‐24‐3p to upregulate the expression of CDK4, resulting in enhanced Rb phosphorylation. Moreover, enforced expression of ciPVT1 reversed the senescence induction effect of miR‐24‐3p in endothelial cells. In summary, the present study reveals a pivotal role for ciPVT1 in regulating endothelial cell senescence and may have important implications in the search of strategies to counteract the development of age‐associated vascular pathologies. We characterized a novel circular intronic RNA ciPVT1, which originates from intron 4 of the PVT1 gene, was markedly reduced in senescent endothelial cells. Further functional and mechanistic investigations revealed that ciPVT1 may act as a competing endogenous RNA (ceRNA) to regulate CDK4 and its downstream gene by decoying miR‐24‐3p, thereby delaying endothelial cell senescence.
DOI: 10.1242/dev.128074
发表时间: 2016-06-01
期刊: DEVELOPMENT
影响因子: 4.6
作者:
Barrett, Steven P.;Salzman, Julia
通讯作者: Salzman, Julia
circ-Sirt1 通过序列特异性相互作用控制 NF-B 激活,并通过与血管平滑肌细胞中的 miR-132/212 结合增强 SIRT1 表达
DOI: 10.1093/nar/gkz141
发表时间: 2019-04-23
影响因子: 14.9
作者:
Kong, Peng;Yu, Yuan;Han, Mei
通讯作者: Han, Mei
circTP63 作为 ceRNA 通过上调 FOXM1 促进肺鳞状细胞癌进展
DOI: 10.1038/s41467-019-11162-4
发表时间: 2019-07-19
影响因子: 16.6
作者:
Cheng, Zhuoan;Yu, Chengtao;Qin, Wenxin
通讯作者: Qin, Wenxin
DOI: 10.1080/15476286.2015.1128065
发表时间: 2016-01-02
期刊: RNA BIOLOGY
影响因子: 4.1
作者:
Dudekulay, Dawood B.;Panda, Amaresh C.;Gorospe, Myriam
通讯作者: Gorospe, Myriam
DOI: 10.1016/j.yjmcc.2015.01.021
发表时间: 2015-12
影响因子: 5
作者:
Donato AJ;Morgan RG;Walker AE;Lesniewski LA
通讯作者: Lesniewski LA