Antibody Internalization Assays

Cell Line Engineering
In vitro Pharmacological Evaluation
Antibody Fab Fragment Combination ExperimentADCC Effect Evaluation ExperimentCDC Effect Evaluation ExperimentADCP Effect Evaluation ExperimentImmune Cell Stimulation and Cytokine Release AssayBispecific Antibody T Cell or NK Cell Engager AssayCytokine Neutralization AssayTarget Binding ExperimentsAntibody Internalization AssaysCell Cycle ExperimentsCell Apoptosis ExperimentKilling / Inhibition AssayIn vitro Bystander Effect ExperimentCell Therapy and Gene Therapy
Tumor-bearing Mouse Models

Case: In vitro pharmacological efficacy evaluation assay of the ADC drug DS-8201a targeting HER2.


A pH-sensitive dye-labeled antibody emits fluorescence only after being phagocytosed into the endosomes of target cells and undergoing acidification. Flow cytometry is used to capture and analyze the fluorescence signal for quantifying the internalization effect.


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Fig. Endocytosis of DS-8201a in target cells was detected by flow cytometry.


GPT Advantages


  • Extensive library of target cells (300+ cancer cell lines and humanized cell lines) and certified BSL-2 level laboratories.

  • Free provision of comparator antibody therapy for common viral infections.

  • Proficiency in Flow Cytometry and molecular analysis platforms.

  • Availability of immune system humanized mice like NCG-IL15, NCG-IL2, and NCG-SGM3 for functional verification of the Fc effect (ADCC, ADCP, etc.) on ADC drug antibodies.

  • Vast project experience.

  • Compliance with regulatory requirements for new drug application submissions.

  • Strict laboratory data storage standards ensure experiment traceability.


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