Intracellular Flow Cytometry ("Phosphoflow") to Assess Signal Transduction in Rare Populations Such As Memory B Cell...

Area of Science:

• Immunology
• Cell Biology
• Biotechnology

Background:

• Intracellular flow cytometry is a key technique for studying cellular signaling.
• Analyzing rare cell populations presents unique challenges in biological research.
• Existing methods may lack the throughput or specificity for rare cell signaling analysis.

Purpose of the Study:

• To present an optimized, plate-based protocol for intracellular flow cytometry.
• To enable the assessment of signaling responses in rare cell populations, specifically B cells.
• To combine intracellular flow cytometry with high-dimensional analysis for robust protein measurement.

Main Methods:

• Development of a plate-based intracellular flow cytometry protocol.
• Optimization of the assay for rare B cell populations.
• Integration with high-dimensional flow cytometry for multiplexed protein detection.

Main Results:

• The protocol allows for massively parallel readouts from thousands of single cells.
• The assay is fast, straightforward, and optimized for rare B cell analysis.
• Multiple signaling proteins can be measured with high confidence in rare cell subsets.

Conclusions:

• Intracellular flow cytometry is a powerful tool for interrogating signaling in rare cellular populations.
• This optimized protocol facilitates detailed analysis of B cell signaling pathways.
• The combination with high-dimensional flow cytometry provides high-confidence, multiplexed measurements.