Characterization of Dendritic Cell Metabolism by Flow Cytometry

Area of Science:

• Immunology
• Cellular Metabolism
• Biochemistry

Background:

• Dendritic cells (DCs) are crucial immune cells that require metabolic adaptation to perform their functions.
• Stimuli trigger significant metabolic reprogramming in DCs, impacting their effector functions.
• Understanding DC metabolic heterogeneity is essential for comprehending immune responses.

Purpose of the Study:

• To present a comprehensive workflow for assessing dendritic cell metabolism.
• To detail the use of fluorescent dyes and antibody-based methods for measuring key metabolic parameters in DCs.
• To enable the characterization of metabolic heterogeneity within DC populations at a single-cell resolution.

Main Methods:

• Utilized fluorescent dyes to quantify glycolysis and lipid metabolism.
• Employed antibody-based approaches to assess mitochondrial activity.
• Measured the activity of mechanistic target of rapamycin (mTOR) and AMP-activated protein kinase (AMPK) using flow cytometry.
• Applied standard flow cytometry for single-cell analysis of DC metabolic states.

Main Results:

• Established protocols for evaluating glycolysis, lipid metabolism, and mitochondrial function in DCs.
• Demonstrated the capacity to measure the activity of mTOR and AMPK signaling pathways in DCs.
• Successfully characterized metabolic properties and heterogeneity within DC populations at the single-cell level.
• Validated flow cytometry as a robust technique for DC metabolic profiling.

Conclusions:

• Fluorescent dyes and antibody-based assays provide a powerful toolkit for dissecting DC metabolic reprogramming.
• Single-cell flow cytometry enables detailed analysis of metabolic states and heterogeneity in dendritic cells.
• These methods facilitate a deeper understanding of how DC metabolism influences immune cell function and responses.