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用于检测抗原特异性T 细胞的最具一致性的技术!
 Pro5® I 类MHC 五聚体是一项独特并经证实的专利技术,在免疫监测、抗原特异性T细胞表征以及表位确认领域为行业领先者所广泛使用。在全世界范围所有供应商中,ProImmune 的MHC 多聚体出版物数量的增长速度是最快的。目前已有超过650多篇出版物引用了Pro5® 多聚体的使用,其中一些文章发表在具有顶级影响因子的杂志上,如Lancet(柳叶刀)、Journal of Immunology(免疫学杂志)、Journal of ExperimentalMedicine(实验医学杂志)和Blood(血液)。客户信赖我们详尽的实验方案和技术经验来支持并提升他们的研究工作。

如果您正在试图检测一个数量极少的抗原特异性T 细胞群,您就会理解拥有一个敏感、准确、并能产生可重复性结果的研究工具的重要性,而这正是Pro5® 五聚体所能提供的。五聚体与具有某特定特异性(由主要组织相容性复合物(MHC) 等位基因和肽的组合决定)的T 细胞受体直接结合。五聚体可用于检测和分离仅占淋巴细胞0.02%的稀少抗原特异性CD8+T 细胞群。五聚体还适用于详细的表位表征和其他免疫监测。

与学术性和非盈利性来源的质量和稳定性均不稳定的四聚体不同,五聚体得益于优异的设计,并依照包含许多严格的质量控制步骤在内的行业标准而生产。利用五聚体技术可以获得准确且可重复的结果。Pro5® 五聚体由五个MHC-肽复合物经一个卷曲螺旋结构域组合构成。借其平面构型,五聚体中的所有五个MHC-肽复合物均可用于结合互补的T细胞受体(TCR)。每个五聚体还包含高达5 个荧光或生物素标签以实现明亮且有效的标记。相比之下,MHC 四聚体技术依赖于四面体结构的MHC-肽复合物,由于空间结构的原因,可以用于TCR 结合的MHC-肽复合物不超过3 个。


关于Pro5® I 类MHC 五聚体的更多信息
www.proimmune.com/ecommerce/page.php?page=pentamer_info

Pro5® MHC 五聚体的特性
● 结果的一致性和可重复性
● 荧光素标记选择的灵活性
● 所提供的复合物范围最广
● 与T细胞受体结合亲和力高
● 荧光素整体亮度更高
● 长期储存

Pro5® MHC 五聚体的优势

  Pro5® 五聚体 四聚体
亲合力及构象 每个Pro5®五聚体的5个MHC-肽复合体均为同一朝向,呈平面排布,增强与TCR相互作用的亲合力 MHC-肽复合体形成四面体构象,只允许3个MHC-肽复合体结合TCRs
荧光亮度 独特的标记技术使得多达5个荧光标签附着于每个Pro5®五聚体,可产生更强的荧光亮度 MHC四聚体拥有一个荧光标签位于复合体的中心
标记灵活性 除已荧光标记的五聚体外,还提供生物素标记和未标记的五聚体,可根据自己需要选择荧光标记,增加应用的范围 四聚体是将生物素化的MHC单体与荧光标记的抗生物素蛋白链菌素多聚化而制成。预标记,可选择少
稳定性(保存) 未标记的五聚体可在-80度条件下长期保存 必须在4°C贮存,这使得其贮存期限平均缩短至6-12个月

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