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公司名称: Sigma-Aldrich
产品编号: H7523
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Measuring Mitochondrial ROS in Mammalian Cells with a Genetically Encoded Protein Sensor
Author:
Date:
2018-01-20
[Abstract]  Reactive oxygen species (ROS) are not only known for their toxic effects on cells, but they also play an important role as second messengers. As such, they control a variety of cellular functions such as proliferation, metabolism, differentiation and apoptosis. Thus, ROS are involved in the regulation of multiple physiological and pathophysiological processes. It is now apparent that there are transient and local changes in ROS in the cell; in so-called ‘microdomains’ or in specific cellular compartments, which affect signaling events. These ROS hotspots need to be studied in more depth to ... [摘要]  活性氧(ROS)不仅以其对细胞的毒性作用而闻名,而且作为第二信使也起着重要的作用。如此,它们控制多种细胞功能,例如增殖,代谢,分化和凋亡。因此,ROS参与多种生理和病理生理过程的调节。现在很明显,细胞内存在ROS的短暂和局部变化;在所谓的“微域”或特定的细胞区室中,其影响信号传导事件。这些ROS热点需要更深入的研究,以了解其功能和规定。因此,有必要以高空间和时间分辨率在单个细胞中识别和量化氧化还原信号。遗传编码的基于荧光的蛋白质传感器提供了检测氧化还原信号传导过程的必要工具。这些传感器的一个很大的优势是可以针对他们。线粒体是能量代谢所必需的,并且是哺乳动物细胞中ROS的主要来源之一。因此,对这些细胞器中氧化还原电位和ROS产生的评估是非常有意义的。在此,我们提供了一个使用H 2 O 2特异性比例传感器mitoHyPer在贴壁哺乳动物细胞中。【背景】ROS是通过线粒体呼吸的副产物,通过电子从电子传递链泄漏而产生的。这些ROS被认为是有毒的,并导致脂质,蛋白质的氧化,并导致线粒体DNA损伤(Ralph et al。,2010; Bogeski等人,2016; Bogeski ,2014; Monika et al。,2015)。虽然线粒体作为新陈代谢,生物能量学和细胞死亡的枢纽,线粒体ROS作为调节多种细胞功能的第二信使的新兴作用也日益被接受(Chandel,2015; ...

VSVG Psudotyped Retrovirus Production
Author:
Date:
2011-12-05
[Abstract]  Retrovirus vector pseudotyped with vesicular stomatitis virus G (VSV-G) protein has been proven to exhibit high efficiency to deliver genes in a variety of cells. Efficiency is affected by relative cell growth rate and phosphatidylserine level on the cell membrane. [摘要]  带有水疱性口炎病毒(vesicular stomatitis virus G,VSV-G) 蛋白的假型逆转录病毒载体已被证明可将基因高效递送到各种细胞中。其 效率受相对细胞的生长速度以及细胞膜上的磷脂酰丝氨酸的水平影响。

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