Isolation of adipose tissue immune cells

Area of Science:

• Immunometabolism
• Cellular immunology
• Obesity research

Background:

• Increased macrophage infiltration in adipose tissue (AT) is linked to insulin resistance in obesity.
• Analyzing immune cells in AT is vital for understanding obesity-related metabolic dysfunction.
• Standardized protocols are needed for reliable immune cell isolation and flow cytometry analysis in AT.

Purpose of the Study:

• To demonstrate a reliable method for isolating immune cells from adipose tissue.
• To provide guidance on antibody labeling and flow cytometry gating for macrophages and T lymphocytes.
• To ensure accurate data interpretation in immunometabolism studies of lean and obese states.

Main Methods:

• Tissue processing: Mincing and enzymatic digestion of adipose tissue.
• Cell isolation: Enrichment of the stromal vascular fraction (SVF).
• Flow cytometry: Antibody labeling of macrophages and T lymphocytes, with specific attention to autofluorescence and compensation controls.

Main Results:

• Successful isolation of immune cell-enriched SVF from rodent adipose tissue.
• Demonstration of proper gating strategies for identifying macrophages and T lymphocytes.
• Presentation of representative flow cytometry plots comparing lean and obese mice.

Conclusions:

• Accurate isolation and flow cytometry analysis of AT immune cells are critical for immunometabolism research.
• Careful selection of antibodies and use of compensation controls are essential for reliable results.
• This methodology facilitates the study of immune cell contributions to obesity and insulin resistance.