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PTENα and PTENβ promote carcinogenesis through WDR5 and H3K4 trimethylation.
Nature Cell Biology ( IF 21.3 ) Pub Date : 2019-11-04 , DOI: 10.1038/s41556-019-0409-z
Shao-Ming Shen 1 , Cheng Zhang 1 , Meng-Kai Ge 1 , Shuang-Shu Dong 2 , Li Xia 1 , Ping He 1 , Na Zhang 1 , Yan Ji 2 , Shuo Yang 1 , Yun Yu 1 , Jun-Ke Zheng 1 , Jian-Xiu Yu 3 , Qiang Xia 4 , Guo-Qiang Chen 1
Affiliation  

PTENα and PTENβ are two longer translational variants of phosphatase and tensin homolog (PTEN) messenger RNA. Their expressional regulations and functions in carcinogenesis remain largely unknown. Here, we demonstrate that, in contrast with the well-established tumour-suppressive role of canonical PTEN, PTENα and PTENβ promote tumourigenesis by directly interacting with the histone H3 lysine 4 (H3K4) presenter WDR5 to promote H3K4 trimethylation and maintain a tumour-promoting signature. We also show that USP9X and FBXW11 bind to the amino-terminal extensions of PTENα/β, and respectively deubiquitinate and ubiquitinate lysines 235 and 239 in PTENα to regulate PTENα/β stability. In accordance, USP9X promotes tumourigenesis and FBXW11 suppresses tumourigenesis through PTENα/β. Taken together, our results indicate that the Pten gene is a double-edged sword for carcinogenesis, and reinterpretation of the importance of the Pten gene in carcinogenesis is warranted.

中文翻译:

PTENα 和 PTENβ 通过 WDR5 和 H3K4 三甲基化促进癌变。

PTENα 和 PTENβ 是磷酸酶和张力蛋白同源物 (PTEN) 信使 RNA 的两个较长的翻译变体。它们在致癌作用中的表达调控和功能在很大程度上仍然未知。在这里,我们证明,与经典 PTEN 公认的肿瘤抑制作用相反,PTENα 和 PTENβ 通过直接与组蛋白 H3 赖氨酸 4 (H3K4) 呈递蛋白 WDR5 相互作用来促进肿瘤发生,从而促进 H3K4 三甲基化并维持肿瘤促进作用。签名。我们还表明,USP9X 和 FBXW11 与 PTENα/β 的氨基末端延伸结合,并分别使 PTENα 中的 235 和 239 赖氨酸去泛素化和泛素化,以调节 PTENα/β 的稳定性。因此,USP9X 促进肿瘤发生,而 FBXW11 通过 PTENα/β 抑制肿瘤发生。综合起来,
更新日期:2019-11-04
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