Néstor de la Visitación, Wei Chen, Jaya Krishnan, Justin P Van Beusecum, Venkataraman Amarnath, Elizabeth M Hennen, Shilin Zhao, Mohammad Saleem, Mingfang Ao, Sergey I Dikalov, Anna E Dikalova, David G Harrison, David M Patrick
BACKGROUND: Hypertension is characterized by CD8+ T cell activation and infiltration into peripheral tissues. CD8+ T cell activation requires proteasomal processing of antigenic proteins. It has become clear that isoLG (isolevuglandin)-adduced peptides are antigenic in hypertension; however, IsoLGs inhibit the constitutive proteasome. We hypothesized that immunoproteasomal processing of isoLG-adducts is essential for CD8+ T cell activation and inflammation in hypertension. METHODS: IsoLG adduct processing was studied in murine dendritic cells (DCs), endothelial cells (ECs), and B8 fibroblasts...
April 16, 2024: Circulation Research