尼古丁介导的 OTUD3 下调抑制 VEGF-C mRNA 降解,促进人食管癌的淋巴转移。
Nicotine-mediated OTUD3 downregulation inhibits VEGF-C mRNA decay to promote lymphatic metastasis of human esophageal cancer.
机构信息
Department of Experimental Research, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 510060, Guangzhou, China.
Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences; Guangzhou Institute of Oncology, Tumor Hospital, Guangzhou Medical University, 511436, Guangzhou, China.
出版信息
Nat Commun. 2021 Dec 1;12(1):7006. doi: 10.1038/s41467-021-27348-8.
Nicotine addiction and the occurrence of lymph node spread are two major significant factors associated with esophageal cancer's poor prognosis; however, nicotine's role in inducing lymphatic metastasis of esophageal cancer remains unclear. Here we show that OTU domain-containing protein 3 (OTUD3) is downregulated by nicotine and correlates with poor prognosis in heavy-smoking esophageal cancer patients. OTUD3 directly interacts with ZFP36 ring finger protein (ZFP36) and stabilizes it by inhibiting FBXW7-mediated K48-linked polyubiquitination. ZFP36 binds with the VEGF-C 3-'UTR and recruits the RNA degrading complex to induce its rapid mRNA decay. Downregulation of OTUD3 and ZFP36 is essential for nicotine-induced VEGF-C production and lymphatic metastasis in esophageal cancer. This study establishes that the OTUD3/ZFP36/VEGF-C axis plays a vital role in nicotine addiction-induced lymphatic metastasis, suggesting that OTUD3 may serve as a prognostic marker, and induction of the VEGF-C mRNA decay might be a potential therapeutic strategy against human esophageal cancer.
尼古丁成瘾和淋巴结转移的发生是与食管癌预后不良相关的两个主要重要因素;然而,尼古丁在诱导食管癌淋巴转移中的作用尚不清楚。在这里,我们发现烟酰胺腺嘌呤二核苷酸磷酸(NADPH)氧化酶 3 结构域蛋白 3(OTUD3)被尼古丁下调,并与重度吸烟食管癌患者的不良预后相关。OTUD3 直接与锌指蛋白 36(ZFP36)相互作用,并通过抑制 FBXW7 介导的 K48 连接多泛素化来稳定它。ZFP36 与 VEGF-C 3-UTR 结合,并招募 RNA 降解复合物诱导其快速 mRNA 降解。OTUD3 和 ZFP36 的下调对于尼古丁诱导的 VEGF-C 产生和食管癌中的淋巴转移是必不可少的。这项研究确立了 OTUD3/ZFP36/VEGF-C 轴在尼古丁成瘾诱导的淋巴转移中起着至关重要的作用,表明 OTUD3 可能作为一个预后标志物,并且诱导 VEGF-C mRNA 衰变可能是一种针对人类食管癌的潜在治疗策略。