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Inaba, Yuka; Hashiuchi, Emi; Watanabe, Hitoshi; Kimura, Kumi; Oshima, Yu; Tsuchiya, Kohsuke; Murai, Shin; Takahashi, Chiaki; Matsumoto, Michihiro; Kitajima, Shigetaka; Yamamoto, Yasuhiko; Honda, Masao; Asahara, Shun-Ichiro; Ravnskjaer, Kim; Horike, Shin-Ichi; Kaneko, Shuichi; Kasuga, Masato; Nakano, Hiroyasu; Harada, Kenichi; Inoue, Hiroshi
Nature communications, 01/2023, Letnik: 14, Številka: 1Journal Article
Hepatocellular death increases with hepatic steatosis aggravation, although its regulation remains unclear. Here we show that hepatic steatosis aggravation shifts the hepatocellular death mode from apoptosis to necroptosis, causing increased hepatocellular death. Our results reveal that the transcription factor ATF3 acts as a master regulator in this shift by inducing expression of RIPK3, a regulator of necroptosis. In severe hepatic steatosis, after partial hepatectomy, hepatic ATF3-deficient or -overexpressing mice display decreased or increased RIPK3 expression and necroptosis, respectively. In cultured hepatocytes, ATF3 changes TNFα-dependent cell death mode from apoptosis to necroptosis, as revealed by live-cell imaging. In non-alcoholic steatohepatitis (NASH) mice, hepatic ATF3 deficiency suppresses RIPK3 expression and hepatocellular death. In human NASH, hepatocellular damage is correlated with the frequency of hepatocytes expressing ATF3 or RIPK3, which overlap frequently. ATF3-dependent RIPK3 induction, causing a modal shift of hepatocellular death, can be a therapeutic target for steatosis-induced liver damage, including NASH.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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