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Cell-based bioassays are powerful analytical tools used to evaluate the biological activity and functional properties of biomolecules, including proteins, antibodies, peptides, and small molecules. These assays assess how a biomolecule interacts with specific cellular components or signalling pathways, providing valuable insights into its efficacy, potency, and mechanism of action.

Cell-based bioassays are widely used in drug development, and biological molecule product development. They are especially useful when studying complex biological systems that in vitro models might not fully replicate. By incorporating living cells, these assays can mimic the biological context and cellular responses, making them more predictive of in vivo outcomes.

Antibody-Dependent Cellular Cytotoxicity (ADCC) is an important immune mechanism wherein effector cells (such as natural killer (NK) cells, macrophages, or neutrophils) recognize and destroy target cells that are coated with antibodies. ADCC is a key functional property of many therapeutic monoclonal antibodies (mAbs) and plays a significant role in their efficacy in oncology, autoimmune diseases. ADCC cell-based bioassays are used to evaluate the ability of antibodies or other therapeutic molecules to activate immune effector cells to target and kill antigen-expressing cells.
Antibody-Dependent Cellular Phagocytosis (ADCP) is another critical immune mechanism through which antibodies mediate the elimination of target cells, such as tumor cells or pathogen-infected cells, by engaging phagocytic cells (e.g., macrophages, dendritic cells, and neutrophils). In ADCP, the Fc region of the antibody binds to Fc receptors (FcRs) on the surface of phagocytic cells, triggering the internalization and destruction of the antibody-coated target cells.

Complement-Dependent Cytotoxicity (CDC) is a key immune effector function in which antibodies activate the complement system to mediate the destruction of target cells. This process is crucial for the immune response against tumors, infected cells, and pathogen-infected cells.

Aragen can provide the unified support on cell-based bioassays in close collaboration with our customers to meet their assay specifications to complies the regulatory requirements.

For more details consult our Experts

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