| Differential Fractionation of Erythrocytes Infected by Plasmodium berghei
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Author:
Date:
2020-06-05
[Abstract] The study of host/pathogen interactions at the cellular level during Plasmodium intra-erythrocytic cycle requires differential extraction techniques aiming to analyze the different compartments of the infected cell. Various protocols have been proposed in the literature to study specific compartments and/or membranes in the infected erythrocyte. The task remains delicate despite the use of enzymes or detergents theoretically capable of degrading specific membranes inside the infected cell.
The remit of this protocol is to propose a method to isolate the erythrocyte cytosol ...
[摘要] [摘要 ] 疟原虫内红细胞周期中细胞水平上宿主/病原体相互作用的研究需要采用差异提取技术来分析感染细胞的不同区室，文献中提出了各种方案来研究特定的区室和/或尽管理论上使用酶或去污剂能够降解被感染细胞内部的特定膜，但这项工作仍然很棘手。
该方案的任务是提出一种通过percoll 梯度从感染细胞的其他区室中分离出红细胞胞浆和鬼影的方法，此外，使用equinatoxin II 裂解红细胞膜的方法已经被证明是更有效的方法。有效的在红细胞裂解不管细胞感染状态，相比常用链球菌溶血素。该虫空泡（PV）的含量收集皂素后，恢复细胞膜和寄生虫胞液蛋白通过的Triton X-100裂解，裂解液由此获得的前通过分析W¯¯ 西部时代印迹以评估各种提取steps.This协议的准确度允许主机室的从寄生虫隔间（PV和寄生虫）的分离，从而导致出口到主机宿主蛋白质的潜力的研究，以及寄生虫蛋白质细胞。
[背景] 本文所介绍的协议是，我们最初发表在一个协议的一个改进的科学报告.The 该协议的最初的目标是执行的表征P. 疟原虫由寄生虫出口到它的主机cell.This蛋白允许的免疫荧光测定法的证实，证实了蛋白质的输出-以及被布雷菲德菌素A 阻断-以及在被感染的红细胞中输出时相互作用蛋白的分析（Gnangnon et al。，2019）。
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| Cycloheximide Assays to Measure Protein Degradation in vivo in Plants
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Author:
Date:
2016-09-05
[Abstract] The half-life of a protein is a characteristic property, and can be modulated by post-translational modifications, changes in subcellular localization, and/or interaction with other proteins or ligands. As one determinant of its steady-state level, a protein’s degradation represents an important distinguishing attribute relevant to its biological function. Because protein longevity cannot be elucidated from bioinformatics analyses, it must be determined empirically. Here we describe two approaches for in vivo half-life determination in plants: 1. pooled-seedling degradation assays ...
[摘要] 蛋白质的半衰期是特征性质，并且可以通过翻译后修饰，亚细胞定位的改变和/或与其他蛋白质或配体的相互作用来调节。 作为其稳态水平的一个决定因素，蛋白质的降解代表与其生物学功能相关的重要的区别属性。 由于蛋白质的寿命不能从生物信息学分析中阐明，必须根据经验确定。 这里我们描述了在植物中体内半衰期测定的两种方法：1.监测蛋白质（萤光素酶融合物或其它表位标签）的标记形式或遵循内源蛋白质的混合 - 幼苗降解测定; 2.使用荧光素酶融合蛋白的单胚芽降解测定。 这些方法的优点是它们的简单性和低成本。
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| Western Blot for Detecting Phosphorylated STAT3
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Author:
Date:
2011-08-20
[Abstract] The STAT3 transcription factor is an important signaling molecule for many cytokines and growth factor receptors and is constitutively activated in a number of human tumors and possesses oncogenic potential and anti-apoptotic activities. STAT3 is activated by phosphorylation at Tyr705, which induces dimerization, nuclear translocation, and DNA binding. Western blot is most commonly used to detect the activation of STAT3 by using an antibody that is specific for the phosphorylated tyrosine705.
[摘要] Stat3转录因子是许多细胞因子和生长因子受体中重要的信号分子，它在许多人类的肿瘤细胞中持续激活，具备潜在的致癌能力和抗凋亡能力。Stat3通过705位酪氨酸磷酸化被激活，进而诱导它的二聚化，核定位以及DNA结合功能。STAT3的活性经常通过能识别705位酪氨酸磷酸化的抗体来检测。
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