
- Description
- Additional Information
- Readable Documents
- Assay Principle
- Reviews
Key Benefits
- Detection of reduced Thiols in cells or tissue extracts.
- Sensitive Fluorescent Assay.
- Detection of reduced Thiol levels in apoptosis, metabolism and oxidative stress.
- Detection of reduced Thiols in Bacterial, fungal, plant cells or other samples.
- Fluorescent 96 well Plate Reader Readout (excitation: 488nm and emission at 515-530 nm).
Additional information
Kit Size | 100 |
---|
During the normal course of metabolism, oxygen is partly reduced as electrons leak out of the electron transport chain during respiration. These partially reduced oxygen species (ROS) can react with organic substances through non-catalytic means. Furthermore, ROS can be generated via endogenous enzyme systems like plasma NADPH oxidase, cytoplasmic xanthine oxidase and organelle sources e.g., cytochrome P-450. ROS have been implicated in regulating diverse cellular functions including proliferation, defense against pathogens, intra-cellular signaling, transcriptional activation and apoptosis. Elevation of ROS beyond the buffering capacity of the cell can lead to oxidative stress. Elevated ROS levels can lead to damage of DNA/RNA, proteins and lipids which may lead to apoptosis. Cells have developed several mechanisms to counter act elevated ROS levels such as a thiol reducing buffer composed of cellular thiol levels (glutathione and thioredoxion) for the maintenance of the reduction-oxidation (redox) state of the cell, and enzymes to remove ROS (catalase, superoxide dismutase and glutathione peroxidase) (1-2).
Figure 1. Detection of glutathione (GSH) utilizing the Fluoro Thiol kit.
Figure 2. Jurkat cells were incubated with 1 mM staurosporine (4) for 3 hours. After which thiol levels were quantified using Cell Technology’s Fluoro Thiol kit. The graph represents approximately 1 x 10 4 cells per reaction (n=3).
Document Title |
Fluoro Thiol Protocol |
Fluoro Thiol Datasheet |
msds.FluoroThiol |
Reference |
Gamaley IA and Klyubin IV (1999) Roles of reactive oxygen species: Signaling and regulation of cellular functions. Int Rev Cytol 188:203–238. |
Nakamura H, Nakamura K and Yodoi J (1997) Redox regulation of cellular activa-tion. Annu Rev Immunol 15:351–369. |
2,4-Dinitrobenzenesulfonyl Fluoresceins as Fluorescent Alternatives to Ellman s Reagent in Thiol-Quantification Enzyme Assays*. Hatsuo Maeda,*Hiromi Matsuno,Mai Ushida, Kohei Katayama,Kanako Saeki,and Norio Itoh. Angew.Chem.Int.Ed.2005 ,44 ,2922 –2925 |
Marchetti,P.,et al .,Redox regulation of apoptosis: impact of thiol oxidation status on mitochondrial function.Eur.J.Immunol.,27 ,289-296 (1997). |
Part# | Reagent | Temperature |
Part# 4021 | Dye, 1 Vial Dried | Store at -20C |
Part# 3053 | Lysis Buffer, 25 mL | Store at 2-8C |
Part# 7015 | GSH Standard, 3 Vials Dried | Store at 2-8C |
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各位,最近几个月一直在帮着公司进口细胞株,我是新手,从来没有接触过这样的业务,摸着石头过河,遇到了很多问题,也得到了很多教训和经验,不敢独享,觉得还是分享一下吧,给有需要的指指道,希望能少走弯路。
先不多说,正文如下:
大家看好了,我写的是企业进口细胞株,不是针对高校或者别的什么科研机构,因为到目前为止国家还没有一个正式的文件去指导企业进口细胞株,只有一个过渡性文件,因此各地操作时也有些不同,除了北京、上海、广东等一些发达的地方有操作程序,其他地方由于企业进口细胞株的案例很少,因此很麻烦的(比如黑龙江,我们最后都找到省卫生厅厅长了)。
首先,你们公司如果选择购买一个国外的细胞株,最先考虑的是付款问题,你得找一家进出口代理公司,帮你操作,这个都是比较常规的,另外你最好再找一家在北京或者上海的公司帮助清关。这里有涉及到“进口代理协议”和“供货合同,我们当时是签了一个三方合同”,这里一定要注意和国外沟通好,需要进口的细胞株的名称、数量、价值等等,后期发货的时候千万不要不一致。
因为细胞株是特殊物品,需要从省卫生厅那里拿到一个“医用特殊物品准出入境证明”,这个东西很难搞的(高校或科研机构容易一些,基本上都有程序),尤其是一些没有先例的省份(领导不敢批,怕担事),我们公司就是黑龙江的先例,这个东西不知道怎么办的到时候可以找我私聊。搞这个东西的正常周期是2-3周,请注意,一定要把准出入境的有效时间尽量写长一点,还有就是主送单位一定要你所清关的口岸的检疫局,例如北京口岸入境,就写北京出入境检验检疫局。当时没人提醒我,这两个我都搞错过,结果多跑了几次,我们的国家服务人员态度一次比一次差,快气死了,不过后来还是搞到了。
拿到“医用特殊物品准出入境证明”以后,预付款也打了,国外准备要发货了,这之前还要一个“特殊物品入境审批单”,这个需要到你所清关的口岸的检疫局搞,下面以北京出入境检验检疫局为例,这个东西要是你是外地的(非清关所在口岸)是搞不到的,你得先去北京出入境检验检疫局备案(就是公司证照原件,情况说明,单位说明等等,比较好办),然后在你细胞株进口之前2-3周申请(1周能批,有效期3个月)。我当时是委托北京一家公司办的,因为你自己办是不方便的,到时候审批单还要亲自去取,外地的很麻烦。
箱单、发票就不说了
接下来是运输,细胞株一般都用干冰运输,当然也可以选择液氮,不过价钱不一样,液氮要比干冰贵40%左右。要计算好运输过程中干冰损失量,量要足够,最好放一个温度记录仪,如果你没有把握,在货物到港清关之前,也可以加干冰的,就比较贵,单次1000元左右。发货之前一定和发货方、运输公司沟通好,标签和数量一定要准入证明和审批单一致,要不然清关很麻烦的,我再次犯了一个错误。
最后就是清关了,这里一定要注意,你找的清关公司的清关能力一定强,一定是做过冷链清关的。
总结一下:
程序是:签合同,找进口代理和清关公司,办理相关证明文件,选择冷了运输公司,运输,清关。
文件:合同、代理协议、医用特殊物品准出入境证明、特殊物品入境审批单、发票、箱单等。
另外,这里面还有不少细节,我就不一一说了,如果真有这方面运输的,可以找我。
版主horizon801留言:
谢谢分享
目前想建立家系血标本的淋巴细胞的永生化细胞株,请问有哪些成熟的方法及protol,费用贵么?
G418浓度之前师兄已经摸索出来,这次筛选直接用师兄浓度。
1、6孔板转染后多长时间开始进行G418筛选?
2、G418筛选是在6孔板中继续筛选还是转到24/96孔?大皿?
3、G418浓度什么时候减量
4、?筛选过程中荧光观察一小部分克隆不错,如何挑选出来?
5、整个筛选过程大约需要多长时间?
lipo3000筛选
谢谢大家!
希望有大神赐教!谢谢!
病情描述(发病时间、主要症状等):
体检血常规中血小板计数343.血小板比积0.39.
尿检中白细胞计数26.2.上皮细胞计数10.30
心电图下写窦性心律,p-r间期偏短
想得到怎样的帮助:
有没有什么大问题

