Kelch样ECH关联蛋白1(Kelch-like ECH-associated protein 1,Keap1)是E3泛素连接酶的底物识别亚单位,在蛋白质的泛素化修饰中起重要作用。蛋白质的泛素化修饰作为一种重要且复杂的蛋白质翻译后修饰,在自噬和蛋白酶体系统中作为降解信号...Kelch样ECH关联蛋白1(Kelch-like ECH-associated protein 1,Keap1)是E3泛素连接酶的底物识别亚单位,在蛋白质的泛素化修饰中起重要作用。蛋白质的泛素化修饰作为一种重要且复杂的蛋白质翻译后修饰,在自噬和蛋白酶体系统中作为降解信号而被利用。野生型Keap1能够识别、结合多种底物蛋白质并通过Keap1-Cul3-Rbx1复合物泛素化。此外,Keap1还作为一种抑癌蛋白而被广泛研究,已发现诸多Keap1的体细胞突变或等位基因的异常缺失诱发人类多种疾病。当前的研究主要围绕在Keap1-Nrf2系统而很少涉及到其他下游底物。鉴于Keap1在细胞中的重要功能及广大的发展空间,这篇综述将对Keap1目前的研究现状进行总结。包括:泛素-蛋白酶体系统(ubiquitin-proteasome system,UPS),Keap1的结构、功能、突变,Keap1的泛素化底物及Keap1的相关疾病,探讨Keap1在疾病中的临床意义及研究中存在的机遇与挑战。展开更多
INTRODUCTION The intra-aortic balloon pump(IABP)is commonly used as a cardiac assist device in various clinical situations,including cardiogenic shock,mechanical complications of acute myocardial infarction,high risk ...INTRODUCTION The intra-aortic balloon pump(IABP)is commonly used as a cardiac assist device in various clinical situations,including cardiogenic shock,mechanical complications of acute myocardial infarction,high risk percutaneous coronary interventions(PCI),coronary artery bypass graft surgery and refractory unstable angina,etc.However,like other invasive devices,the use of IABP has been associated with some complications.The most frequently reported complications are hemorrhage and limb ischemia.Rare complications include infection,arterial perforation,aortic dissection and thrombocytopenia and bowel infarction.Arterial embolism of internal organs is a rare but fatal complication of IABP therapy.Sirbu et al.reported that 59%of patients who developed ischemic vascular complications due to IABP died1.展开更多
文摘Kelch样ECH关联蛋白1(Kelch-like ECH-associated protein 1,Keap1)是E3泛素连接酶的底物识别亚单位,在蛋白质的泛素化修饰中起重要作用。蛋白质的泛素化修饰作为一种重要且复杂的蛋白质翻译后修饰,在自噬和蛋白酶体系统中作为降解信号而被利用。野生型Keap1能够识别、结合多种底物蛋白质并通过Keap1-Cul3-Rbx1复合物泛素化。此外,Keap1还作为一种抑癌蛋白而被广泛研究,已发现诸多Keap1的体细胞突变或等位基因的异常缺失诱发人类多种疾病。当前的研究主要围绕在Keap1-Nrf2系统而很少涉及到其他下游底物。鉴于Keap1在细胞中的重要功能及广大的发展空间,这篇综述将对Keap1目前的研究现状进行总结。包括:泛素-蛋白酶体系统(ubiquitin-proteasome system,UPS),Keap1的结构、功能、突变,Keap1的泛素化底物及Keap1的相关疾病,探讨Keap1在疾病中的临床意义及研究中存在的机遇与挑战。
文摘INTRODUCTION The intra-aortic balloon pump(IABP)is commonly used as a cardiac assist device in various clinical situations,including cardiogenic shock,mechanical complications of acute myocardial infarction,high risk percutaneous coronary interventions(PCI),coronary artery bypass graft surgery and refractory unstable angina,etc.However,like other invasive devices,the use of IABP has been associated with some complications.The most frequently reported complications are hemorrhage and limb ischemia.Rare complications include infection,arterial perforation,aortic dissection and thrombocytopenia and bowel infarction.Arterial embolism of internal organs is a rare but fatal complication of IABP therapy.Sirbu et al.reported that 59%of patients who developed ischemic vascular complications due to IABP died1.
