product data sheet
Catalog No.: 56201
Size: 200 ul IgG prepared by ammonium sulfate precipitation in PBS, pH 7.4.
Antigen: Alum denatured porcine S100A1.
Host Species: Sheep
Stabilizers: None
Preservatives: None. Available upon request.
This antibody reacts with bovine and porcine S100A1 in immunoblots. Immunoreactivity with recombinant rat and human S100A1 and recombinant human S100A4 is reduced when compared to native bovine and porcine S100A1. Does not react with human S100A2 in immunoblots. This antibody reacts with bovine, rat, and recombinant S100B in immunoblots but less than 5% cross- reactivity with S100B is seen in competitition radioimmunoassays. Cross- reactivity with other members of the S100 family has not been investigated.
This antibody may be used in immunohistochemistry, immuno- cytochemistry, radioimmunoassays, and Western blots to detect
or quantitate S100A1.
Dilute in PBS or medium which is identical to that used in the assay system. For Western blots using an avidin-biotin secondary antibody system, a 1:50 dilution has been used successfully. For indirect immunofluorescence, a 1:2 dilution has been used successfully. Optimal dilutions should be determined for each assay system.
These antibodies are stable for at least one
(1) year at -20oC to -70oC. Store product in appropriate aliquots to avoid multiple freeze-thaw cycles.
Zimmer and Landar. 1995. Jour Neurochemistry 64: 2727; Van Eldik et al. 1988. Jour Biol Chem 263: 7830.
For in vitro investigational use only. Not for use in therapeutic or diagnostic procedures.
QED Bioscience, Inc. 10919 Technology Place, Suite C
San Diego, CA 92127
Toll Free 800.929.2114
Phone 858.675.2405
Fax 858.592.1509
info@qedbio.com
Visit our website for additional product information and to order online.
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酶的作用是催化剂,促进或抑制反应的进行.加热主要是通过升高温度加快反应速率,无机催化剂和酶的原理相同,都是通过降低反应的活化能加快反应速率
不破坏细胞结构，同步动态侦测细胞有氧呼吸，糖酵解OCR/ECA(总或乳酸ECA)；
i.过氧敏感荧光素（或pH敏感荧光素）,Ex340-380/535/Em630-680nm，实时测量线粒体/胞内/胞外重要代谢指标，荧光素为非结构性结合可逆转改变；
ii.可同时或单个测量OCR/ECA或其他参数，不会做成浪费，可采用时间分辨荧光技术可加强系统信噪比
iii.通过两个加药口，可对检测细胞加入适当抑制剂/刺激实时监测细胞对不同毒素作用
2015年7月6日讯/生物谷BIOON/--最近，来自艾默里大学的科学家发现在许多黑色素瘤中存在一个重要基因突变能够使癌细胞的代谢重新连线，使癌细胞的生长依赖于一种参与酮体生成的催化酶，这一发现为解决黑色素瘤细胞对靶向药物的抵抗，开发新的替代药物提供了深入见解，同时也部分解释了为什么这一突变在黑色素瘤细胞中频发。近日，相关研究结果发表在国际学术期刊molecularcell。
B-raf基因发生V600E突变在黑色素瘤细胞中非常常见，这一突变能够促进癌细胞生长，除了在黑色素瘤中存在，在一些结肠癌和甲状腺癌病例中也发现存在B-rafV600E突变。目前已经开发出一些针对B-rafV600E基因突变的靶向药物，但在临床实验中发现，在癌症得到明显改善之后，携带V600E基因突变的癌细胞都不可避免地产生药物抗性。
在这项研究中，研究人员发现B-rafV600E基因突变能够刺激癌细胞产生更多的HMG-CoA裂解酶，携带V600E突变的黑色素瘤细胞生长非常依赖于该酶，而其他的黑色素瘤细胞则不会。HMG-CoA裂解酶是酮体生成途径中一个重要酶，能够帮助机体在血糖水平较低时降解脂肪酸以获得能量。酮体生成途径能够受到低糖，高脂饮食刺激激活，通常发生于肝脏，但B-rafV600E基因突变启动了癌细胞中的酮体生成，以维持癌细胞生长存活。除此之外，研究人员还发现酮体生成途径的重要产物乙酰乙酸能够刺激携带B-rafV600E基因突变的癌细胞继续增殖。
总得来说，这项研究证明B-rafV600E基因突变能够使黑色素瘤细胞中的代谢途径重新连线，增强癌细胞对酮体生成途径的依赖性，这一发现对于解决黑色素瘤细胞对靶向药物的抵抗，开发新的替代药物具有重要意义。（生物谷Bioon.com）
希望能帮到你。
productivitybyusingmannoseascarbonsource:Metabolicanalysisand
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