当前位置: X-MOL 学术Mol. Ther. Nucl. Acids › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Elevated Tristetraprolin Impairs Trophoblast Invasion in Women with Recurrent Miscarriage by Destabilization of HOTAIR.
Molecular Therapy - Nucleic Acids ( IF 8.8 ) Pub Date : 2018-07-06 , DOI: 10.1016/j.omtn.2018.07.001
Fu-Ju Tian 1 , Xiao-Ying He 2 , Jie Wang 3 , Xiao Li 1 , Xiao-Ling Ma 1 , Fan Wu 4 , Jing Zhang 1 , Xiao-Rui Liu 4 , Xiao-Li Qin 5 , Yan Zhang 6 , Wei-Hong Zeng 1 , Yi Lin 1
Affiliation  

Tristetraprolin (TTP) regulates the stability of multiple targets that have important biological roles. However, the role of TTP in trophoblasts at the maternal-fetal interface remains poorly understood. We demonstrated that TTP was upregulated in placental trophoblasts from patients with recurrent miscarriages (RMs). Immunofluorescence and immunoblotting analyses indicated that TTP was redistributed from the nucleus to the cytoplasm in trophoblasts from patients with RMs. Trophoblast invasion and proliferation was repressed by TTP overexpression and was enhanced by TTP knockdown. Interestingly, TTP knockdown promoted trophoblast invasion in an ex vivo explant culture model. Furthermore, TTP overexpression in trophoblasts significantly inhibited the expression of the long non-coding RNA (lncRNA) HOTAIR. TTP was found to regulate HOTAIR expression by a posttranscriptional mechanism. To RNA immunoprecipitation (RIP) and RNA-protein, pull-down identified TTP as a specific binding partner that decreased the half-life of HOTAIR and lowered steady-state HOTAIR expression levels, indicating a novel posttranscriptional regulatory mechanism. Our findings identify a novel function for TTP in lncRNA regulation and provide important insights into the regulation of lncRNA expression. This study reveals a new pathway governing the regulation of TTP/HOTAIR in trophoblast cell invasion during early pregnancy.



中文翻译:

升高的 Tristetraprolin 通过破坏 HOTAIR 损害反复流产妇女的滋养层侵袭。

Tristetraprolin (TTP) 调节具有重要生物学作用的多个目标的稳定性。然而,TTP 在母胎界面滋养层中的作用仍然知之甚少。我们证明 TTP 在复发性流产 (RM) 患者的胎盘滋养细胞中上调。免疫荧光和免疫印迹分析表明 TTP 在 RM 患者的滋养细胞中从细胞核重新分布到细胞质。滋养层的侵袭和增殖被 TTP 过表达抑制,并被 TTP 敲低增强。有趣的是,TTP 敲低促进了体外滋养层的侵袭外植体培养模型。此外,滋养细胞中的 TTP 过表达显着抑制了长链非编码 RNA (lncRNA) HOTAIR 的表达。发现 TTP 通过转录后机制调节 HOTAIR 表达。对于 RNA 免疫沉淀 (RIP) 和 RNA 蛋白,pull-down 将 TTP 确定为一种特异性结合伙伴,可缩短 HOTAIR 的半衰期并降低稳态 HOTAIR 表达水平,表明一种新的转录后调控机制。我们的研究结果确定了 TTP 在 lncRNA 调控中的新功能,并为 lncRNA 表达的调控提供了重要的见解。本研究揭示了调控妊娠早期滋养层细胞侵袭中 TTP/HOTAIR 调控的新途径。

更新日期:2018-07-06
down
wechat
bug