easYmer HLA-A*29:01 MHC Tetramers Kit
easYmer HLA-A*29:01 MHC Tetramers Developed and Manufactured by immunAware
Materials Included:
The easYmer kit contains a peptide receptive preparation of HLA, a folding buffer, a positive control peptide for HLA-complex folding. The exact identities of these components are given below:
- easYmer: HLA-A*29:01 – peptide receptive and biotinylated HLA-A*29:01 molecules in Tris/Maleate pH7 with 30% Glycerol
- Folding Buffer: Tris/Maleate pH7
- Peptide: YF NS5 286-295 (KSEYMTSWFY), a known HLA-A*29:01 binder. Positive control for evaluation analysis of peptide-HLA folding
for Research Use Only
Available Sizes:
- 20 Tests (Sample-size)
- 50 Tests (Standard Size)
- 150 Tests
- 500 Tests
Key Benefits of easYmer® MHC Tetramers
- Ready-to-use
- One step loading
- Completely flexible and customizable*
- Biotinylated
- No special equipment needed
- Long shelf-life
*For Custom Tetramer Production, please Contact Us for more information
Assay Principle
This easYmer HLA-A*29:01 MHC Tetramers protocol is designed to evaluate the efficiency of peptide-HLA-I interaction and complex formation. The assay is based on detecting the ß2-microglobulin (ß2m? light chain subunit of recombinant HLA Class I (HLA-I) comlexes, where the heavy chain has been biotin tagged. These tagged complexes are subsequently captured by streptavidin coated beads, labeled with PE-conjugated anti-human ß2m, and analyzed by flow cytometry. Since peptide-HLA-I complex formation is entirely peptide dependent, bead-associated signals will only be detected if the peptide in question supports the folding of the HLA-I allotype of interest; peptides that efficiently support folding will give strong signals whereas peptides that support folding sub-optimally, or not at all, will give moderate to non-detectable signals.
Products Related to easYmer HLA-A*29:01 MHC Tetramers
easYmer HLA-A*30:02 MHC Tetramers Kit
easYmer HLA-A*36:01 MHC Tetramers Kit
easYmer HLA-A*68:01 MHC Tetramers Kit
ebiomall.com
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原理:利用温度传感器测量,传入温控器进行PID测算,输出0-10V或0-20ma的模拟信号,再通过模拟信号控制阀门控制器控制阀门的打开与关闭,来达到调节流量或压力的目的。
如果是要控制恒流量或恒压力,那么温度控制器是不行的啦。
请不要说用某某进口仪器,希望有些土办法。
因为做免疫组化前固定的标本一般不超过48-72小时,所以较急!在线等!
望版主加固本话题!
谢谢!
安捷伦1260高效液相,先做五针对照品一的峰面积RSD为0.4%,然后进第二个对照品时第一针峰面积2238,第二针的为2330,此机器刚做完校验而且前一天的实验也一切正常,灯也是刚换不久。样品瓶中也不存在有气泡或样品溶液装得太满的问题。而且样品盘有温控,亦没有发现漏液。自己实在是想不到哪有问题,难不成真是机器偶尔秀逗了一下?有没有大神给点意见………………
这里我想像大家介绍一种新的高效细胞活性和细胞增殖测定剂——alamarBlue。介绍之前先说最重要的一点,使用alamarBlue价格比较昂贵,如果你的银子不多,呵呵,还是乖乖告诉老板你的MTT结果吧。
细胞增殖检测主要有三种方法:第一、增殖期抗体的测定(例如Ki-67和CydlinE)。第二、增殖期DNA合成标记(3H,BrdU等)。相信这两种方法少有人做,反正以前我都没听过(见笑了)。还有第三就是增殖细胞对外界环境物质的降解测定(包括大家常做的MTT和XTT、MTS,还有今天要介绍的AlamarBlue)。
AlamarBlue是一种新型的细胞活性和细胞增殖的指示剂,是一种可溶、稳定、无毒的靛蓝染料,同时适用于贴壁和悬浮细胞。它对细胞抗原的表达和杂交瘤细胞的抗体分泌功能无影响,而且非常有意义的一点就是,经过AlamarBlue测定的细胞可以继续培养或进行其他的功能测定。AlamarBlue可以用普通分光光度计、荧光光度计和酶标仪进行测定,非常方便,其测定结果同样有线性趋势,而且线性范围更广,更灵敏和稳定。
主要应用于:
a.优化细胞培养条件
b.对细胞生长因子或细胞因子进行活性定量
c.有助于开发抗生素或抗肿瘤的新药
d.了解毒性物质或污染物对细胞生长的影响
e.评估细胞介导的细胞毒作用
f.定量检测凋亡发生
g.适用于真核细胞、真菌和细菌的活性和增殖测定。
附件是AlamarBlue的产品详细说明,实验操作手册。感兴趣的战友可以看一看。还有一篇文章是比较MTT和AlamarBlue的,不过很遗憾,我没能查到全文,如果哪位高手能查出来,真心希望能够贴出来与大家分享。
Hamid,R.,Rotshteyn,Y.,RabADI,L.etal.ComparisonofalamarblueandMTTassaysforhighthrough-putscreening.ToxicologyinVitro.200418(5);703-710.
alamarbluebooklet.pdf(153.16k)

