The role of E3 ubiquitin ligase Smurf1 in the activation of AKT

作为一个既汇聚多种上游信号，同时又作用于多个下游效应分子的中心代谢调控分子，AKT对于细胞行使正常生物学功能及其调控，以及对于大量癌症的发生都具有不可或缺的作用。正常情况下，AKT活性的有无及强弱被严格控制以使其能够适度的压制细胞凋亡、刺激细胞增长和增值。然而在肿瘤环境中，AKT的过度活化现象被频繁发现于绝大部分肿瘤细胞，几乎所有人类癌症细胞都存在AKT过活现象。由于在正常生理及癌症环境中都起到如此重要的作用，大量研究专注于AKT的活化机制及其过度活化的诱因，越来越多的蛋白被证明参与到AKT的特异性活化过程中。 本课题通过内源敲低实验发现E3泛素连接酶SMURF1的缺失会导致细胞增殖速度的下...AKT, a central metabolic controller which not only gathers multiple upstream signals, but also acts on a series of downstream effectors. For this reason, AKT plays an indispensable role in both normal biological function realizations and tumorigenesis. In normal physiological environment, whether or not the AKT can be activated, and the level at which it be activated to express at are strictly con...学位：理学硕士院系专业：生命科学学院_细胞生物学学号：2162012115240

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

JUNO sensitivity on proton decay p → ν K + searches*

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the $p\to \bar{\nu} K^+$ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies