产品货号XY0166
产品名称 PDL1抗体
蛋白名Programmed cell death 1 ligand 1
别称B7-H,B7H1,PDL1,PD-L1,PDCD1L1,PDCD1LG1
PDL1抗体
免疫原重组蛋白（来源于大肠杆菌）
来源兔
特异性抗人
克隆类型多克隆
应用WB免疫印迹
研究领域免疫学
成分200μg/ml亲和纯化抗体，0.01M PBS，30%甘油。
保存条件连续使用时4°C存储，保质期六个月；长期存储时建议分装为10ul以上小包装-20°C存储，并避免反复冻融，保质期一年。
背景资料CD274(CD274 molecule), also known as PDCD1L1, PDL1, B7H1, CD274 molecule, cluster of differentiation (CD274) or B7 homolog 1 (B7-H1), Programmed cell death 1 ligand 1, is a protein that in humans is encoded by the CD274 gene. Levels of B7H1 correlated with PTEN loss in glioblastoma specimens, ａnd tumor-specific T cells lysed human glioma targets expressing wildtype PTEN more effectively than those expressing mutant PTEN. Sequence analysis predicted that it has 290-amino acid. immunoresistance in glioma is related to loss of the tumor suppressor PTEN ａnd is mediated in part by B7H1.Programmed death ligand 1 (PD-L1) is a 40kDa type 1 transmembrane protein that has been speculated to play a major role in suppressing the immune system during particular events such as pregnancy, tissue allografts, autoimmune disease ａnd other disease states such as hepatitis. Using microarray analysis ａnd flow cytometry, Barber et al.(2006) found that Pd1 was highly upregulated by functionally exhausted CD8 T cells from mice infected with a lymphocytic choriomeningitis virus (LCMV) strain causing chronic infection, but not by functional memory CD8 T cells from mice infected with an LCMV strain causing acute infection.
 参考效价：

抗体保存得当与否直接决定了抗体的活性和使用效果。如果抗体保存得当，大部分抗体活性都可以维持数月甚至数年。请按照说明书或者抗体标签上推荐的保存条件正确保存抗体！无论是保存还是运输，绝对避免反复冻融抗体！

1.拿到抗体后请务必在1000-3000转离心1-2分钟后再打开管盖进行分装和保存！（由于运输过程中反复颠簸，管内微量抗体容易聚集在管盖处，一旦直接打开容易流失抗体。请放心抗体出厂时保证已装入足量。）

2.对于大部分抗体，比较合适的保存方式是分装后保存在-20℃冰箱。

◇分装可以程度降低反复冻融对抗体活性的损害，PDL1抗体同时也降低了多次从同一管中吸取抗体造成污染的可能性。

◇分装的量以一次实验用完为好，但建议*少不要少于10μL每份。分装体积越小，抗体浓度可能会受到蒸发以及管壁吸附的影响，同时分装次数越多移液吸头吸附的抗体也越多，可能会误认为抗体没有足量装入。（用无菌的进口0.2ML离心管来分装抗体，国产的小管一般没有经过很好的硅化处理，容易吸附抗体蛋白，影响抗体活性。）

◇分装时请将无菌的微量移液器吸头先插入管底部反复吹打几次后再吸出抗体，PDL1抗体以便抗体有效成分与抗体保护剂充分混匀。

◇复融后的分装抗体如果一次用不完，请将剩余母液保存在4℃冰箱，避免再冻起来！

◇绝对避免将抗体保存在自动除霜冰箱的冷藏室中。尽量将抗体保存在手动除霜冰箱里面，而不是在冰箱门上。

3.大部分抗体收到后4℃短暂保存1-2周对抗体活性是基本没有影响的。如果抗体很快（1-2周内）就能使用完，推荐在4℃保存，避免反复冻融对抗体活性的损害。如果要长期保存则分装后-20℃保存。

4.即用型抗体请务必保存在4℃冰箱，一定不能冷冻保存。

5.特殊抗体的保存：

◇酶联抗体：一般保存在4℃，尽量避免冷冻起来。否则可能会导致酶活力的下降或者丧失。

◇偶联抗体：所有偶联抗体需要4℃避光保存。尤其是荧光标记抗体，对光极为敏感，因此所有实验阶段也是要避光操作的。

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