Nuclear factor-erythroid 2-related factor 1 regulates expression of proteasome genes in hepatocytes and protects against endoplasmic reticulum stress and steatosis in mice.
Nuclear factor-erythroid 2-related factor 1 regulates expression of proteasome genes in hepatocytes and protects against endoplasmic reticulum stress and steatosis in mice.
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核因子 - 果皮2相关因子1调节肝细胞中蛋白酶体基因的表达,并预防小鼠内质网应激和脂肪变性。
DOI:
10.1111/febs.12350
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发表时间:
2013-08
期刊:
影响因子:
--
通讯作者:
Chan JY
中科院分区:
文献类型:
--
作者:
Lee CS;Ho DV;Chan JY
The ubiquitin proteasome system (UPS) is important in maintaining protein homeostasis. NFE2-related factor 1 (Nrf1), a transcription factor in the cap “n” collar (CNC) basic leucine zipper family, regulates expression of cytoprotective genes. It was previously shown that liver-specific knockout of Nrf1 (Nrf1LKO) leads to hepatic cell death, steatohepatitis and cancer. However, the mechanisms underlying these pathologies are not clear. Here, we report that Nrf1 is critical for proteasome gene expression in the liver. Liver-specific knockout of Nrf1 results in impaired basal and induced expression of proteasome genes, and diminished proteasome activity in hepatocytes. In addition, our findings demonstrated that ER stress signaling pathway was also activated in Nrf1LKO livers. Inhibition of proteasome activity leads to ER stress in Nrf1-deficient hepatocytes, prompting the development of steatosis in the liver. Our results indicate that Nrf1 plays an integral role in the maintenance of proteasome function in hepatocytes and in the prevention of liver steatosis development. Moreover, these results highlight an association between proteasome dysfunction, ER stress and steatosis.
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DOI:
10.1038/80992
发表时间:
2000-11-01
期刊:
NATURE STRUCTURAL BIOLOGY
影响因子:
--
作者:
Groll, M;Bajorek, M;Finley, D
通讯作者:
Finley, D
影响因子:
64.8
作者:
Groll, M;Ditzel, L;Huber, R
通讯作者:
Huber, R
影响因子:
3.5
作者:
Banner, BF;Savas, L;Bonkovsky, HL
通讯作者:
Bonkovsky, HL
DOI:
10.1007/3-540-27194-5_32
发表时间:
2005-01-01
期刊:
SIGNALING PATHWAYS IN LIVER DISEASES
影响因子:
--
作者:
French, SW;Bardag-Gorce, F
通讯作者:
Bardag-Gorce, F
DOI:
10.1073/pnas.1019209108
发表时间:
2011-05-17
影响因子:
11.1
作者:
Lee, Candy S.;Lee, Chiashan;Chan, Jefferson Y.
通讯作者:
Chan, Jefferson Y.