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Updated: May 29, 2026

IP-FCM: Immunoprecipitation Detected by Flow Cytometry
12:17

IP-FCM: Immunoprecipitation Detected by Flow Cytometry

Published on: December 2, 2010

Multiplex IP-FCM (immunoprecipitation-flow cytometry): Principles and guidelines for assessing physiologic

Anya T Bida1, Diana Gil, Adam G Schrum

  • 1Mayo Clinic College of Medicine, Department of Immunology, Rochester, MN, USA.

Methods (San Diego, Calif.)
|September 28, 2011
PubMed

Insights

Multiplex immunoprecipitation detected by flow cytometry (IP-FCM) enhances access to the interactome. This method allows simultaneous assessment of many protein-protein interactions (PPI) from primary cells.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Immunology

Background:

  • Significant interest exists in methods to increase access to the 'interactome' for experimental and clinical use.
  • Protein-protein interactions (PPI) within multiprotein complexes (MPC) are crucial for cellular functions.
  • Current methods may have limitations in sensitivity or throughput for studying PPI.

Purpose of the Study:

  • To describe the conversion of singleplex immunoprecipitation detected by flow cytometry (IP-FCM) to a multiplex format.
  • To provide a framework for developing multiplex IP-FCM assays for studying protein-protein interactions.
  • To enable high-throughput analysis of PPI in primary cells.

Main Methods:

  • Utilized principles of ambient analyte conditions (AAC) and inter-bead independence.
  • Developed a template set of experiments for converting singleplex IP-FCM to multiplex IP-FCM.
  • Included assays to validate experimental conditions for data acquisition.

Main Results:

  • Demonstrated the successful upgrade of singleplex IP-FCM to a multiplex format.
  • Established a method for simultaneous assessment of multiple physiological PPI.
  • Confirmed the validity of experimental conditions for multiplex data acquisition.

Conclusions:

  • Singleplex IP-FCM can be effectively converted to a multiplex format.
  • Multiplex IP-FCM offers a powerful approach for acquiring new PPI data.
  • This method is particularly valuable for studying PPI in primary cell sources.

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