Optimizing the Seahorse XF Mito Stress Test Workflow and Troubleshooting Notes: A Stepwise Protocol for HUVECs.

Area of Science:

• Cellular metabolism
• Vascular biology
• Aging research

Background:

• Human umbilical vein endothelial cells (HUVECs) are crucial in vitro models for vascular aging (VA) research.
• Standard metabolic assays can compromise the native adherent state of HUVECs, affecting results.
• Accurate assessment of mitochondrial respiration and glycolytic function is vital for understanding VA.

Purpose of the Study:

• To provide an optimized, step-by-step protocol for the Seahorse XF Cell Mito Stress Test on HUVECs.
• To maintain the native adherent state of HUVECs throughout the metabolic assay.
• To enable real-time, label-free measurement of cellular respiration and glycolysis in HUVECs.

Main Methods:

• Utilizes the Agilent Seahorse XF Pro Analyzer for metabolic profiling.
• Details instrument preparation, cell seeding, compound loading, and assay execution.
• Incorporates troubleshooting tips and notes for improved experimental efficiency and reproducibility.

Main Results:

• The protocol successfully preserves the adherent state of HUVECs during the Seahorse XF Cell Mito Stress Test.
• Enables label-free, real-time measurement of mitochondrial respiration and glycolytic function.
• Provides a refined workflow for metabolic profiling of HUVECs.

Conclusions:

• This optimized protocol enhances the efficiency and reproducibility of HUVEC metabolic analysis.
• It supports robust investigation of cellular metabolism in vascular aging and cardiovascular studies.
• The method facilitates accurate assessment of mitochondrial and glycolytic function in endothelial cells.