期刊
CELLULAR AND MOLECULAR LIFE SCIENCES
卷 79, 期 5, 页码 -出版社
SPRINGER BASEL AG
DOI: 10.1007/s00018-022-04320-3
关键词
FBXW2; Prostate cancer; EGFR; Ubiquitylation and degradation; Metastasis
资金
- National Natural Science Foundation of China [81772702]
- Natural Science Foundation of Hubei Province [2021CFB366]
The study reveals that FBXW2 functions as a tumor suppressor in prostate cancer by promoting EGFR ubiquitination and degradation, leading to repression of cell proliferation and metastasis.
FBXW2 is a poorly characterized F-box protein, as a tumor suppressor that inhibits growth and metastasis of lung cancer by promoting ubiquitylation and degradation of oncogenic proteins, including SKP2 and beta-catenin. However, what the biological functions of FBXW2 in prostate cancer cells and whether FBXW2 targets other substrates to involve in progression of prostate cancer is still unclear. Here, we reported that overexpression of FBXW2 attenuated proliferation and metastasis of PCa models both in vitro and in vivo, while FBXW2 depletion exhibited the opposite effects. Intriguingly, FBXW2 was an E3 ligase for EGFR in prostate cancer. EGFR protein level and its half-life were extended by FBXW2 depletion, while EGFR protein level was decreased, and its half-life was shortened upon overexpression of FBXW2, but not its dominant-negative mutant. Importantly, FBXW2 bond to EGFR via its consensus degron motif (TSNNST), and ubiquitylated and degraded EGFR, resulting in repression of EGF function. Thus, our data uncover a novel that FBXW2 as a tumor suppressor of prostate cancer, inhibits EGFR downstream by promoting EGFR ubiquitination and degradation, resulting in repression of cell proliferation and metastasis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据