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 >  Antibody>Trastuzumab >TRB-Y5b

Anti-Trastuzumab Antibody (AY5b) (recommended for PK/PD)

抗体来源(Source)

Anti-Trastuzumab Antibodies (recommended for PK/PD) (TRB-Y5b) are expressed from human 293 cells (HEK293).

亚型(Isotype)

Mouse IgG1/kappa

特异性(Specificity)

Recognizes Trastuzumab specifically, no cross reactivity with other humanized antibodies.

纯度(Purity)

>95% as determined by SDS-PAGE.

制剂(Formulation)

Lyophilized from 0.22 μm filtered solution in Tris with Glycine, Arginine and NaCl, pH7.5 with trehalose as protectant.

Contact us for customized product form or formulation.

重构方法(Reconstitution)

Please see Certificate of Analysis for specific instructions.

For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

存储(Storage)

For long term storage, the product should be stored at lyophilized state at -20°C or lower.

Please avoid repeated freeze-thaw cycles.

This product is stable after storage at:

  1. -20°C to -70°C for 12 months in lyophilized state;
  2. -70°C for 12 months under sterile conditions after reconstitution.
 

电泳(SDS-PAGE)

Trastuzumab SDS-PAGE

Anti-Trastuzumab Antibody (AY5b) on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95%.

 

活性(Bioactivity)-ELISA

Trastuzumab ELISA

Immobilized Trastuzumab at 1 μg/mL (100 μL/well) can bind Anti-Trastuzumab Antibody (AY5b) (Cat. No. TRB-Y5b) with a linear range of 0.19-6.25 ng/mL (QC tested).

Protocol

Trastuzumab ELISA

Serial dilutions of Anti-Trastuzumab Antibody (AY5b) ( Cat. No. TRB-Y5b) was detected by Biotinylated Human Her2, His,Avitag (Cat. No. HE2-H82E2) with a half maximal inhibitory concentration (IC50) of 7.02 μg/mL (Routinely tested).

Protocol

 

活性(Bioactivity)-SPR

Trastuzumab SPR

Trastuzumab captured on CM5 chip via Anti-human IgG Fc antibodies surface can bind Anti-Trastuzumab Antibody (AY5b) (Cat. No. TRB-Y5b) with an affinity constant of 0.915 nM as determined in a SPR assay (Biacore 8K) (Routinely tested).

Protocol

 

背景(Background)

Trastuzumab, is a monoclonal antibody used to treat breast cancer. Specifically it is used for breast cancer that is HER2 receptor positive. Trastuzumab works by binding to the HER2 receptor and slowing down cell duplication. Trastuzumab is a recombinant IgG1 kappa, humanized monoclonal antibody that selectively binds with high affinity in a cell-based assay (Kd = 5 nM) to the extracellular domain of the human epidermal growth factor receptor protein.

 

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