计算溶液所需的质量、体积或浓度。
无动物源 级 提供 ≥95% 纯度,适用于对基线干扰要求严格的色谱和分析工作流程。
避光,-20°C储存。超低温运输 。请查阅批次 COA 获取详细规格。
SDS、COA、产品数据表及规格说明书均可下载。可通过批号查询获取批次 COA。
在色谱分析、有机合成和交叉偶联反应领域已被 1 篇同行评审文献引用。
蛋白原液 。每种装于冻存管中,单抗质量为标示数量1MG或者5MG,体积根据其浓度不同略有不同。
使用前可以根据自己实验需求进行稀释,溶剂建议用去离子无菌水(细胞培养用水))或者PBS,
不建议使用含有防腐成分的稀释液进行稀释,会增加细胞或者动物毒性。
稀释前,计算加入多少体积溶剂,请参考购买批次质检单上蛋白浓度,
举例,质检单显示该批次单抗蛋白原液蛋白浓度为 50mg/ml
对应5MG包装的蛋白原液体积为5mg(质量)/50mg/ml(浓度)=0.1ML,
实验需求蛋白浓度为10mg/ml, 需要稀释倍数为 50/10=5, 则需要加入0.4ML,即400ul PBS或者无菌去离子水即可。
若给药量为固定质量值,比如单次给药0.5MG,对应蛋白原液给药体积为10ul,建议稀释后,提高给药体积降低误差,因为注射器或者移液器吸头残留会影响实验效果。
Non-reduced CE-SDS:………………………………………….>90%;
SEC-HPLC:………………………………………………………….>95%;
Bacterial Endotoxins Test:…………………………………. .<5.0 EU/mg
Residual Proteins of Host Cell: ……………………………. <100 ng/mg
Exogenous residual DNA: …………………………………. . <100pg/mg
Residual Protein A: ……………………………………………. .<100 ng/mg
Biological Activity:………………………………………….……. .80% to 125% of standard
一种针对蛋白配体PD-L1(程序性细胞死亡-1配体1)的人Fc优化单克隆抗体,具有潜在的免疫检查点抑制和抗肿瘤活性。Atezolizumab与PD-L1结合,阻断其与活化T细胞上表达的受体程序性死亡1(PD-1)的结合和激活,这可能增强T细胞介导的肿瘤免疫反应并逆转T细胞失活。此外,通过与PD-L1结合,atezolizumab还阻止该配体与活化T细胞上表达的B7.1结合,这进一步增强了T细胞介导的免疫应答。PD-L1在许多人类癌症细胞类型和各种肿瘤浸润免疫细胞上过度表达。PD-L1与T细胞上的PD-1结合抑制免疫系统并导致免疫逃避增加。PD-1是一种跨膜蛋白,是免疫系统的负调节因子,限制CD8+T细胞的扩增和存活。atezolizumab的Fc区被修饰成既不会诱导抗体依赖性细胞毒性(ADCC),也不会诱导补体依赖性细胞毒(CDC)。
A human, Fc optimized, monoclonal antibody directed against the protein ligand PD-L1 (programmed cell death-1 ligand 1), with potential immune checkpoint inhibitory and antineoplastic activities. Atezolizumab binds to PD-L1, blocking its binding to and activation of its receptor programmed death 1 (PD-1) expressed on activated T-cells, which may enhance the T-cell-mediated immune response to neoplasms and reverse T-cell inactivation. In addition, by binding to PD-L1, atezolizumab also prevents binding of this ligand to B7.1 expressed on activated T cells, which further enhances the T-cell-mediated immune response. PD-L1 is overexpressed on many human cancer cell types and on various tumor-infiltrating immune cells. PD-L1 binding to PD-1 on T-cells suppresses the immune system and results in increased immune evasion. PD-1, a transmembrane protein, is a negative regulator of the immune system that limits the expansion and survival of CD8+ T cells. The Fc region of atezolizumab is modified in such a way that it does not induce either antibody-dependent cytotoxicity (ADCC) or complement-dependent cytotoxicity (CDC).
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| 批号(Lot Number) | 证书类型 | 货号 |
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| 分析证书 | A411996 | |
| 分析证书 | A411996 | |
| 分析证书 | A411996 | |
| 分析证书 | A411996 | |
| 分析证书 | A411996 | |
| 分析证书 | A411996 | |
| 分析证书 | A411996 | |
| 分析证书 | A411996 |