Related Experiment Video
Updated: Jul 16, 2025
08:47
Live Images of GLUT4 Protein Trafficking in Mouse Primary Hypothalamic Neurons Using Deconvolution Microscopy
Published on: December 7, 2017
9.8K
Raman microscopy reveals how cell inflammation activates glucose and lipid metabolism
Aleksandra Borek-Dorosz1, Anna Pieczara2, Jagoda Orleanska3
1Jagiellonian University in Kraków, Faculty of Chemistry, Department of Chemical Physics, 2 Gronostajowa Str., Krakow, Poland.
Biochimica Et Biophysica Acta. Molecular Cell Research
|September 9, 2023
Summary
High glucose and inflammation significantly alter endothelial cell metabolism, increasing glucose uptake and lipid production. Raman spectroscopy identifies key metabolic markers for endothelial dysfunction, aiding disease understanding.
Area of Science:
- Biomedical Engineering
- Cellular Metabolism
- Cardiovascular Research
Background:
- Endothelial cell (EC) metabolism is crucial for cardiovascular health.
- EC dysfunction is a key factor in cardiovascular disease development.
- Understanding metabolic changes during inflammation is vital.
Purpose of the Study:
- To investigate glucose metabolism alterations in human microvascular endothelial cells (HMEC-1) under high glucose (HG) and inflammatory conditions.
- To identify spectroscopic markers of metabolic changes in ECs using Raman imaging.
- To correlate metabolic shifts with endothelial dysfunction (ED).
Main Methods:
- Utilized Raman scattering spectroscopy (spontaneous and stimulated) for biochemical analysis.
- Induced high glucose state using a deuterated glucose analogue.
- Induced inflammation using TNF-α pre-treatment in HMEC-1 cells.
Main Results:
- Identified increased lipid to protein/lipid ratios and enhanced lipid unsaturation as markers of metabolic change.
- Observed intensified glucose uptake and unsaturated lipid production in inflamed ECs under HG conditions.
- Detected increased cytochrome c signals, indicating heightened mitochondrial activity and biogenesis.
Conclusions:
- Raman spectroscopy effectively reveals metabolic markers associated with endothelial dysfunction.
- Metabolic alterations, including lipid changes and mitochondrial activity, are significant in inflamed, high-glucose ECs.
- This approach enhances understanding of ED onset, progression, and therapeutic strategies.
