引言
CD8+T细胞是控制乙型肝炎病毒(HBV)感染并杀死受感染肝细胞的关键,在慢性感染过程中,这群细胞往往功能失调,但目前人们仍不清楚究竟是什么因素导致肝脏中病毒特异性CD8+ T细胞功能丧失。
近日,来自德国慕尼黑工业大学的Percy A. Knolle团队在Nature杂志上发表了一篇题为A liver immune rheostat regulates CD8 T cell immunity in chronic HBV infection的文章,他们证明肝窦内皮细胞(LSEC)作为肝脏“免疫变阻器”,通过与HBV病毒特异性CD8+ T细胞建立密切而广泛的接触,增强T细胞中的腺苷酸环化酶-cAMP -PKA信号传导,使T细胞受体信号通路的关键信号激酶的磷酸化受到损害,因而导致其功能受到抑制。


参考文献
1. Rauen, T., Hedrich, C. M., Tenbrock, K. & Tsokos, G. C. cAMP responsive element modulator: a critical regulator of cytokine production. Trends Mol. Med. 19, 262–269 (2013).2. Bopp, T. et al. Cyclic adenosine monophosphate is a key component of regulatory T cell-mediated suppression. J. Exp. Med. 204, 1303–1310 (2007).3. Stross, L. et al. Foxp3+ regulatory T cells protect the liver from immune damage and compromise virus control during acute experimental hepatitis B virus infection in mice.Hepatology 56, 873–883 (2012).4. Seamon, K., Daly, J., Metzger, H., De Souza, N. & Reden, J. Structure–activity relationships for activation of adenylate cyclase by the diterpene forskolin and its derivatives. J. Med. Chem. 26, 436–439 (1983).https://doi.org/10.1038/s41586-024-07630-7责编|探索君
排版|探索君
文章来源|“BioArt”
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