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- W2023000634 abstract "The amino acid response (AAR) pathway detects a deficiency of dietary amino acid or protein. To investigate the impact of gestational protein restriction on the AAR pathway in offspring, pregnant Sprague-Dawley rats were fed a control (C) or low protein (LP) diet during gestation. Livers of female offspring were collected on postnatal d 38. The mRNA amount of Atf3 in LP offspring increased significantly compared with C offspring, while Asns did not differ between the two groups. ATF4 and p-eIF2α were both induced in LP offspring, whereas p-ERK was significantly decreased. Additionally, amino acid limitation (-AA) in HepG2 cells increased p-ERK and AAR pathway-related genes, while U0126 decreased p-ERK but did not completely reverse the activation of AAR pathway-related genes. Chromatin immunoprecipitation assay demonstrated an increased association of both RNA polymerase II (Pol II) and ATF4 at the Atf3 promoter in LP offspring, while acetylated histone H4, tri-methyl histone H3 at lysine 9, ATF4, ATF3, C/EBPβ, and CHOP, but not Pol II, were all increased at the Asns promoter in LP offspring. In -AA HepG2 cells, C/EBPβ siRNA treatment did not prevent the activation of either ATF3 or ASNS in response to -AA, while ATF4 siRNA prevented the activation of ASNS but not ATF3. Our data demonstrates that a maternal LP diet programs the AAR pathway in the liver of offspring rats. The differential priming of the downstream target genes of the AAR pathway in response to maternal LP diet presents a novel regulatory mechanism related to nutrient-gene interactions." @default.
- W2023000634 created "2016-06-24" @default.
- W2023000634 creator A5012450193 @default.
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- W2023000634 date "2011-10-01" @default.
- W2023000634 modified "2023-10-11" @default.
- W2023000634 title "Gestational low protein diet selectively induces the amino acid response pathway target genes in the liver of offspring rats through transcription factor binding and histone modifications" @default.
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- W2023000634 doi "https://doi.org/10.1016/j.bbagrm.2011.07.003" @default.
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