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• W2914054216 abstract "Therapeutic adoptive transfer of natural regulatory T cells (nTreg, CD4+ CD25+ Foxp3+ T cells) or in vivo selective expansion of nTreg cells has been demonstrated to improve the cardiac function in various cardiovascular disease models. The differentiation of nTreg cells is mediated by catecholamines via β1-adrenergic receptor (β1-AR) activation. Autoantibody against β1-adrenoceptor (β1-AA) as a β1-AR agonist is closely associated with the occurrence and deterioration of cardiac dysfunction. However, whether β1-AA has any impact on nTreg cells has not been reported. The aim of the present study was intended to assess the potential impact of β1-AA on nTreg cell differentiation and explore the underlying mechanism. It was found that the expression of multiple proteins involved in nTreg cell differentiation, immunosuppressive function, and migration was up-regulated in mice after β1-AA administration, suggesting that β1-AA may promote nTreg cell activation. In vitro, β1-AA promoted nTreg cell differentiation by up-regulating mitochondrial fatty acid oxidation (FAO) in activated CD4+ T cells via AMP-activated protein kinase (AMPK) activation and mitochondrial membrane potential reduction. In addition, the AMPK agonist facilitated β1-AA-mediated FAO and nTreg cell differentiation. To further confirm the role of AMPK in β1-AA-mediated nTreg cell differentiation, β1-AA was acted on the CD4+ T cells isolated from AMPK-deficient (AMPK-/-) mice. The result showed that the effect of β1-AA on nTreg cell differentiation was attenuated markedly after AMPK knockout. In conclusion, AMPK-mediated metabolic regulation targeting for nTreg cell restoration may be a promising therapeutic target for β1-AA-positive patients with cardiac dysfunction." @default.
• W2914054216 created "2019-02-21" @default.
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• W2914054216 date "2019-02-15" @default.
• W2914054216 modified "2023-10-07" @default.
• W2914054216 title "Autoantibody against β1-adrenoceptor promotes the differentiation of natural regulatory T cells from activated CD4+ T cells by up-regulating AMPK-mediated fatty acid oxidation" @default.
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• W2914054216 doi "https://doi.org/10.1038/s41419-018-1209-2" @default.
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