METTL14-mediated Lnc-LSG1 m6A modification inhibits clear cell renal cell carcinoma metastasis via regulating ESRP2 ubiquitination.

METTL14-mediated Lnc-LSG1 m6A modification inhibits clear cell renal cell carcinoma metastasis via regulating ESRP2 ubiquitination.
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METTL14介导的Lnc-LSG1 m6A修饰通过调节ESRP2泛素化抑制透明细胞肾细胞癌转移

DOI:
10.1016/j.omtn.2021.12.024
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发表时间:
2022-03-08
期刊:
Molecular therapy. Nucleic acids
影响因子:
--
通讯作者:
Li G
Li G
中科院分区:
其他
文献类型:
--
作者:
Shen D;Ding L;Lu Z;Wang R;Yu C;Wang H;Zheng Q;Wang X;Xu W;Yu H;Xu L;Wang M;Yu S;Zhu S;Qian J;Xia L;Li G

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透明细胞肾细胞癌(ccRCC)是最致命的泌尿系统癌症,其特点是转移率和复发率高。 N6-甲基腺苷 (m6A) 与癌症发展的各个阶段有关。然而,人们对 ccRCC 中 m6A 修饰的 lncRNA 缺乏透彻的了解。结果显示METTL14在ccRCC组织中表达降低。此外,METTL14的表达与预后、分期和ccRCC肿瘤分级呈负相关。 METTL14 的沉默被证明可显着增加体外和体内的转移。高通量甲基化RNA免疫沉淀测序(MeRIP-seq)表明Lnc-LSG1的m6A水平可以受到METTL14的调节。 Lnc-LSG1可以直接与ESRP2蛋白结合,并通过促进ESRP2泛素化来促进ESRP2降解。然而,Lnc-LSG1 上的 m6A 修饰可以通过 m6A 阅读器 YTHDC1 阻断 Lnc-LSG1 和 ESRP2 之间的相互作用。综上所述,我们的研究结果揭示了 METTL14 抑制 ccRCC 进展的新机制,并首次探讨了 ccRCC 中 m6A 和 lncRNA 之间的相关性。 N6-甲基腺苷 (m6A) 是最常见的 RNA 修饰,与癌症发展的各个阶段有关。 METTL14是m6A的重要甲基转移酶。我们首次深入了解 m6A 修饰的 lncRNA 在 ccRCC 中的功能和机制,并确定了 ccRCC 进展中的“METTL14-YTHDC1-Lnc-LSG1”调节轴。
Clear cell renal cell carcinoma (ccRCC) is the most lethal urological cancer and is characterized by a high rate of metastasis and relapse. N6-Methyladenosine (m6A) is implicated in various stages of cancer development. However, a thorough understanding of m6A-modified lncRNAs in ccRCC is lacking. The results showed that METTL14 had decreased expression in ccRCC tissues. In addition, the expression of METTL14 was negatively correlated to the prognosis, stage, and ccRCC tumor grade. The silencing of METTL14 was shown to significantly increase metastasis in vitro and in vivo. High-throughput methylated RNA immunoprecipitation sequencing (MeRIP-seq) showed that the m6A levels of Lnc-LSG1 could be regulated by METTL14. Lnc-LSG1 can directly bind to ESRP2 protein and promote ESRP2 degradation via facilitating ESRP2 ubiquitination. However, m6A modification on Lnc-LSG1 can block the interaction between Lnc-LSG1 and ESRP2 via the m6A reader, YTHDC1. Taken together, our findings unraveled the novel mechanism of METTL14 inhibiting ccRCC progression, and explored the correlation between m6A and lncRNA in ccRCC for the first time. N6-Methyladenosine (m6A) is the most common RNA modification and implicated in various stages of cancer development. METTL14 is an important methyltransferase of m6A. For the first time, we provide insights into the function and mechanism of m6A-modified lncRNA in ccRCC and identify a “METTL14-YTHDC1-Lnc-LSG1” regulation axis in ccRCC progression.
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