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Cross-Linked Elastin-like Polypeptide Membranes as a Model for Medial Arterial Calcification

  • par garon@biomomentum.com

Ophélie Gourgas; Lisa D. Muiznieks; Dainelys Guadarrama Bello; Antonio Nanci; Simon Sharpe; Marta Cerruti
Publication Date:June 21, 2019

https://doi.org/10.1021/acs.biomac.9b00417

28 citations · 4 en 2025–2026

Les titres, résumés et légendes des publications sont présentés en anglais.

Calcium phosphate minerals deposit on the elastin-rich medial layers of arteries in the majority of seniors, diabetic, and chronic kidney disease patients, causing severe cardiovascular complications. There is no cure for medial calcification, and the mechanism of mineral formation on elastin layers is unknown. Here we propose cross-linked elastin like polypeptide membranes as models to study medial calcification. Calcium phosphates deposit first on fibers and filaments and then spread to globular structures present in the membranes. Mineral phase evolution analyzed by near-edge X-ray spectroscopy matches that previously observed in a mouse model of medial calcification, showing that this simple system captures some of the key in vivo findings. This work shows how minerals form and evolve upon nucleation on elastin and provides an in vitro model that can be tuned to study hypotheses related to arterial calcification mechanisms and test drugs to stop or revert mineralization.

Utilisation des équipements

Cette étude utilisait des membranes réticulées de polypeptides de type élastine comme modèle in vitro de calcification de la média artérielle. Le résumé disponible décrit le dépôt de phosphates de calcium et l’analyse des phases minérales par spectroscopie X au voisinage du seuil, mais ne précise aucun appareil ni protocole d’essai mécanique. Le rôle d’un Mach-1 ne peut pas être vérifié.

Matériaux (1)

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