Hepatocyte ATF3 protects against atherosclerosis by regulating HDL and bile acid metabolism.
Hepatocyte ATF3 protects against atherosclerosis by regulating HDL and bile acid metabolism.
复制标题
肝细胞ATF3通过调节HDL和胆汁酸代谢来预防动脉粥样硬化。
DOI:
10.1038/s42255-020-00331-1
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发表时间:
2021-01
影响因子:
20.8
通讯作者:
Zhang Y
中科院分区:
文献类型:
--
作者:
Xu Y;Li Y;Jadhav K;Pan X;Zhu Y;Hu S;Chen S;Chen L;Tang Y;Wang HH;Yang L;Wang DQ;Yin L;Zhang Y
Activating transcription factor 3 (ATF3) is known to have an anti-inflammatory function, yet the role of hepatic ATF3 in lipoprotein metabolism or atherosclerosis remains unknown. Here we show that over-expression of human ATF3 in hepatocytes reduces the development of atherosclerosis in Western diet-fed Ldlr−/− or Apoe−/− mice, whereas hepatocyte-specific ablation of Atf3 has the opposite effect. We further show that hepatic ATF3 expression is inhibited by hydrocortisone. Mechanistically, hepatocyte ATF3 enhances HDL uptake, inhibits intestinal fat and cholesterol absorption, and promotes macrophage reverse cholesterol transport by inducing scavenger receptor group B type 1 (SR-BI) and repressing cholesterol 12α-hydroxylase (CYP8B1) in the liver through its interaction with p53 and hepatocyte nuclear factor 4α, respectively. Our data demonstrate that hepatocyte ATF3 is a key regulator of HDL and bile acid metabolism and atherosclerosis.
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