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CRO Services

Drug Development Expertise Empowering Research Services for Biologics

Binding & Competition Assays


High-Throughput Binding and Competition Assays for Protein-Protein Interactions

At WuXi Biologics, we specialize in high-throughput binding and competition assays to support biologic drug discovery, antibody characterization, and lead selection. With extensive expertise across diverse formats and technologies, we develop and optimize assays to ensure reproducible, high-quality data for your therapeutic projects.

 

 

Our ELISA, SPR, and FACS-based assays provide:

  • Precise affinity & kinetics analysis for monoclonal antibodies, bispecifics, and fusion proteins
  • High-throughput screening for lead optimization
  • Custom receptor occupancy and epitope binning assays for specific needs

High-throughput binding and competition assays for biologics drug discovery, lead optimization and characterization.

Binding and Competition Assay Services Details:

Service Item Description Request A Quote 
Antigen-Antibody Binding Assays

Protein-based (ELISA/SPR)

Cell-based (FACS)​

Dual: protein-protein, cell-protein, cell-cell​

RBC or platelets binding assay

Request A Quote
Competition Assays

Ligand blocking: protein or cell-based (ELISA/FACS)​

Epitope binning: protein or cell-based (ELISA/FACS)​

Cross-Species/Paralogue Binding Assays Protein or cell-based binding (ELISA/FACS)
Receptor Occupancy Assays

Consult BD representative

Case Study #1: Customized Binding Assays for Antibody-Antigen Binding Evaluation Across Diverse Formats

In this case study, we developed custom ELISA, SPR and FACS assays to evaluate the binding activity of various antibody formats and proteins. These customized assays provided precise and reliable measurements, enabling accurate assessment of antibody-antigen interactions.

 

Custom SPR, ELISA and FACS assays developed to evaluate antibody-antigen binding across diverse formats.

Figure A: The figure highlights a range of protein-based (ELISA or SPR) and cell-based (cell-ELISA, flow cytometry, or FRET) methods for assessing binding activity, some with high-throughput capabilities. It also features dual binding evaluations for bispecific antibodies and other complex molecules, as well as high-throughput screening for multiple cell lines within a single well.

 

Your Project. Our Expertise.