When should fluorescent DLL3 proteins or DLL3-coupled beads be used instead of unconjugated protein?
Fluorescent DLL3 supports direct flow-cytometric detection of DLL3-binding antibodies or engineered cells. DLL3-coupled beads are useful for binder capture, enrichment, or multivalent antigen presentation, while unconjugated protein remains preferable for quantitative kinetics.
Q
How can soluble DLL3 protein and a DLL3 stable cell line be combined to reduce false-positive binders?
Use recombinant DLL3 for controlled affinity and epitope screening, then confirm hits on a DLL3 stable cell line. This filters candidates that recognize an isolated or tag-dependent epitope but poorly bind cell-surface DLL3.
