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single-cell Interaction Cytometry (scIC)

single-cell Interaction Cytometry (scIC)

single-cell Interaction Cytometry (scIC)

Product catalog summary
Overview: The document discusses the measurement of molecular binding to membrane targets on cells using single-cell Interaction Cytometry (scIC). It highlights the importance of understanding binding kinetics, particularly association (kon) and dissociation (koff) rates, in the context of biologics development and cell surface receptor analysis.
Key Concepts:
  • Association and Dissociation: The document emphasizes the significance of kon and koff in determining the binding affinity and avidity of molecules to cell surface receptors.
  • Affinity vs. Avidity: High affinity does not necessarily equate to strong binding. Avidity effects and biphasic dissociations can reveal complex binding modes.
  • Biologics Development: The document outlines the use of scIC for characterizing mono- and multispecific antibodies and other biologics, focusing on new targets like GPCRs.
Measurement Techniques:
  • Single-cell Interaction Cytometry (scIC): Utilizes flow-permeable, bio-compatible polymer cages to trap single cells for automated analysis of binding rates.
  • Fluorescence Analysis: Used to monitor binding kinetics over time, providing insights into binding modes and efficacy.
Applications:
  • Checkpoint Inhibitors: scIC-derived binding kinetics help rationalize the in vivo efficacy of checkpoint inhibitors like Nivolumab, which enables T-cell activation through stable binding to PD-1.
  • Kinetic Analysis: Different binding signatures are revealed through kinetic analysis of monoclonal antibodies (mAbs) on live HEK cells.
Conclusion: The document underscores the importance of understanding binding kinetics for the development of effective biologics and the analysis of previously inaccessible cell surface receptors.
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Catalog excerpts

single-cell Interaction Cytometry (scIC)-1

Affinity & Avidity transmembrane proteins: checkpoint molecules, GPCRs, cytokine receptors, ... chips feature flow-permeable, bio-compatible polymer cages, which physically retain any type of cells. Trap sizes are tailored to capture single cells. for the automated analysis of kon and koff binding rates on cells 01 UNLOADING of cell to waste

 Open the catalog to page 1
single-cell Interaction Cytometry (scIC)-2

Avidity effects Biphasic dissociations reveal complex binding modes Fluorescence (kcps) Biphasic dissociation kinetics indicate two distinct binding modes: 1. Weak binding / affinity 2. Strong binding / avidity 0.5 nM Nivolumab 5.0 nM Nivolumab Dissociation The in vivo efficacy of checkpoint inhibitors is rationalized by scIC-derived binding kinetics: Stable binding of Nivolumab to PD-1 enables T-cell activation. Biologics development On-cell characterization of mono- and multispecific antibodies and other biologics High affinity ≠ strong binder 3 different mAbs binding receptor of interest on...

 Open the catalog to page 2

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