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Related Experiment Video

Updated: Sep 16, 2025

Calcification of Vascular Smooth Muscle Cells and Imaging of Aortic Calcification and Inflammation
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Hypotaurine Reduces Glucose-Mediated Vascular Calcification.

Marina A Heuschkel1, Armand Jaminon2, Steffen Gräber3

  • 1Department of Internal Medicine I - Cardiology, Medical Faculty, RWTH Aachen University, Aachen, Germany.

Acta Physiologica (Oxford, England)
|July 7, 2025
PubMed
Summary

High glucose levels drive vascular calcification in smooth muscle cells by altering metabolism. Targeting the hypotaurine/taurine pathway may offer new treatments for this condition.

Keywords:
hypotaurinemetabolomicstranscriptomicsvascular calcification

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Area of Science:

  • Cardiovascular Biology
  • Metabolomics
  • Molecular Biology

Background:

  • Vascular calcification (VC) is linked to poor outcomes in diabetes and chronic kidney disease.
  • Hyperglycemia is a suspected driver of VC, potentially via metabolic and gene expression changes.

Purpose of the Study:

  • To investigate the role of hyperglycemia in driving vascular calcification.
  • To identify metabolic and transcriptomic alterations associated with glucose-induced VC.
  • To explore the hypotaurine/taurine pathway's involvement in VC.

Main Methods:

  • Human coronary artery smooth muscle cells (SMCs) were cultured under varying glucose concentrations (0, 5.5, 25 mM) with calcifying agents.
  • Untargeted metabolomic and transcriptomic analyses were performed.
  • Mitochondrial respiration was assessed using Seahorse analysis.

Main Results:

  • Elevated glucose concentrations promoted extracellular matrix calcification in SMCs in a dose- and time-dependent manner.
  • Multi-omics analysis identified the hypotaurine/taurine pathway as central to glucose-induced VC.
  • Blocking hypotaurine synthesis exacerbated calcification, while hypotaurine administration inhibited it and improved mitochondrial function.

Conclusions:

  • The hypotaurine/taurine metabolic pathway is implicated in hyperglycemia-driven vascular calcification.
  • Glucose induces metabolic reprogramming in calcifying SMCs, impacting energy production.
  • This study identifies potential therapeutic targets for managing VC in hyperglycemic conditions.