Expression Profile of Human Bitter Taste Receptors in Human Aortic and Coronary Artery Endothelial Cells
Kochany, P.; Opiełka, M.; Słonimska, P.; Gulczynski, J.; Kostrzewa, T.; Łos, A.; Znaniecki, Łukasz; Mickiewicz, A.; Izycka-Swieszewska, E.; Sachadyn, P.; Wozniak, M.; Gruchała, M.; Gorska-Ponikowska, M.
Show abstract
Human bitter taste receptors (TAS2Rs) are G protein-coupled receptors primarily associated with bitter taste perception, in the oral cavity. Many dietary compounds and drugs function as TAS2Rs agonists, activating their intracellular signaling pathways. Emerging evidence indicates TAS2Rs expression in extraoral tissues, including the cardiovascular system, where their functional role remains underexplored.. This study investigates TAS2Rs expression in primary human aortic and coronary artery endothelial cells. Using digital PCR (dPCR), we confirmed the mRNA expression of all 25 TAS2R subtypes in both cell lines. The expression levels were substantially higher in human coronary artery endothelial cells compared to human aortic endothelial cells. We confirmed the protein expression of TAS2R10 and TAS2R38 proteins using Western blot. These findings mark the first identification of TAS2Rs in these endothelial cells, suggesting a potential role in vascular physiology. These findings suggest a potential role for TAS2Rs in vascular physiology, prompting further research into their impact on endothelial function in cardiovascular health and pathology.
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