Expression data from rat hepatocyte during liver regeneration after partial hepatectomy
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ABSTRACT:
ORGANISM(S): Rattus norvegicus
PROVIDER: GSE55434 | GEO | 2014/02/28
SECONDARY ACCESSION(S): PRJNA239572
REPOSITORIES: GEO
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Project description:The recovery of liver mass is mainly mediated by proliferation and enlargement of hepatocytes after partial hepatectomy. Studying the gene expression profiles of hepatocytes after partial hepatectomy will be helpful in exploring the mechanism of liver regeneration. We used microarrays to further highlight the regulatory role of hepatocyte in liver regeneration at gene transcription level. Rat liver regeneration after partial hepatectomy (PH) is a good model to study the regulation of cell proliferation. We isolated hepatocytes from regenerating liver at 9 time points (2, 6, 12,24, 30, 36, 72, 120, and 168h) after PH and measured gene expression profiles of hepatocytes from 2h to 168h with rat Genome 230 2.0 gene chip. Each sample corresponding to one time point was hybridized onto one array. The experiment was repeated 3 times for each time point. In total, 10 time points were measured and 0h was used control group. After careful quality control analyses of each chip, Affymetrix GCOS 2.0 software was used to analyze the data. The relevance of gene expression profiles and biological processes was analyzed by bioinformatics and systems biology.
2014-02-28 | E-GEOD-55434 | biostudies-arrayexpress
Project description:Deletion of the RPS6 gene in mouse liver results in the inhibition of 40S ribosome biogenesis and the failure of hepatocytes to enter S-phase following partial hepatectomy. This microarray experiment was designed to assess the effects of RPS6 deletion on the expression of genes involved in liver regeneration following partial hepatectomy. Keywords: time course, liver
2009-05-01 | GSE13864 | GEO
Project description:Deletion of the RPS6 gene in mouse liver results in the inhibition of 40S ribosome biogenesis and the failure of hepatocytes to enter S-phase following partial hepatectomy. This microarray experiment was designed to assess the effects of RPS6 deletion on the expression of genes involved in liver regeneration following partial hepatectomy. Keywords: time course, liver RNA was isolated from mouse livers at different time-points following partial hepatectomy. Conditional deletion of the RPS6 gene was perfomed by injecting polyinosinic-polycytidylic acid in mice harbouring a floxed version of the RPS6 gene and a cre recombinase under the regulation of an interferon responsive promoter (MX-CRE). The mice used a control have also a floxed version of the RPS6 gene but lack the cre recombinaste transgene.
2009-05-01 | E-GEOD-13864 | biostudies-arrayexpress
Project description:Krüppel-like factor 6 (KLF6) is a transcription factor and tumor suppressor. Loss or reduction of KLF6 is linked with progression of experimental and human hepatocellular carcinoma. Despite its important contributions to liver homeostasis and growth, there are no data characterizing the involvement of KLF6 to hepatic regeneration. Microarray data from wildtype and DeltaKlf6 mice were used to identify regulating mechanisms and potential mediators within liver regeneration Wildtype and hepatocyte specific Klf6 knockout mice (DeltaKlf6) were employed for 70% partial liver resection/hepatectomy (PHx) in order to analyse liver regeneration. Twelve hours after partial hepatectomy animals were scrificed and remnant liver tissue was used for further experiemnts. For the overall study we used 6 animals per group, and included RNA from liver tissue of 3 wildtype and 3 DeltaKlf6 animals for the microarray analysis. Wildtype animals were used as controls.
2016-08-10 | E-GEOD-85381 | biostudies-arrayexpress
Project description:This SuperSeries is composed of the following subset Series: GSE20425: Hepatic gene expression during liver regeneration in response to partial hepatectomy: early time points (0.5h,1h,2h,4h) GSE20426: Hepatic gene expression during liver regeneration in response to partial hepatectomy: late time points (24h, 38h, 48h) Refer to individual Series
2011-02-16 | E-GEOD-20427 | biostudies-arrayexpress
Project description:The liver possesses remarkable regenerative capacity in response to injury. Upon partial hepatectomy (PHx), terminally differentiated hepatocytes in the remaining liver enter the cell cycle and restore the liver mass and function within weeks. However, liver regeneration is often impaired in livers with chronic diseases. Survivin, an inhibitor of apoptosis protein (IAP) and member of chromosome passenger complex (CPC), plays versatile roles in cell mitosis and apoptosis. We and others found that the expression of Survivin was highly increased in liver during PHx-induced liver regeneration, which indicated that Survivin played important roles in this process. However, the function of Survivin in liver regeneration remains largely undefined. Here, using mice with genetic deletion of Survivin, we found that during PHx-induced liver regeneration Survivin regulated both hepatocyte G1/S phase transition by inhibiting the expression of p21 and G2/M phase transition by regulating the localization of CPC. Moreover, restoration of Survivin expression in Survivin-deficient hepatocytes inhibited p21 expression and promote both hepatocyte G1/S and G2/M transition during PHx-induced liver regeneration.
2017-01-01 | GSE83598 | GEO
Project description:Arid1a is the subunit of SWI/SNF complex, which was reported to guide SWI/SNF to DNA. Here, we found that loss of Arid1a in the liver results in improved liver regeneration after partial hepatectomy.Genome-wide analysis showed that after hepatectomy,loss of Arid1a reduces the recruitment and activity of E2F4 on target promoters, resulting in expression programs that favor regeneration during injury.RNAseq shows transcriptional profiling in WT and Arid1a LKO livers pre- and post-hepatectomy, which confirmed the E2F4 target genes and cell cycle genes were upregulated after hepatectomy. After partial hepatectomy, liver transcriptional profiling in WT and Arid1a liver specific KO mice were generated by RNA-seq analysis.
2016-03-30 | E-GEOD-76926 | biostudies-arrayexpress
Project description:The process of liver regeneration can be divided into a series of stages that include initial inductive or priming events through cellular mitosis. Following two-thirds liver resection, the liver undergoes the “priming” phase, in which cytokines TNF-a and IL-6 activate their respective receptors in hepatocytes. This leads to the activation of several key transcription factors: NF-kB, AP-1, Stat 3, Stat 1, and C/EBP-b and -d . These transcription factors induce the expression of immediate early genes. HGF is also expressed at this time and involved in the transition of quiescent hepatocytes into the G1 phase of the cell cycle. During the G1 phase, delayed early genes are expressed followed by induction of cell cycle–related genes, both of which require new protein synthesis for their production. Increased expression of FoxM1B and TGF-a occurs at the G1/S transition and is correlated with increased expression of cyclinD1 and decreased expression of cdk inhibitors. During the G2/M phase of the cell cycle, FoxM1B directly elevates cyclinB1, cyclinB2, and cdc25B expression. Additionally, FoxM1B is associated with increased cyclinF and p55cdc, which are involved in completion of the cell cycle following partial hepatectomy. In mice, two-thirds partial hepatectomy promotes proliferation of liver cells and rapid growth of the remaining liver tissue, resulting in complete restoration of organ mass in approximately 7 days (Mackey S. et al. Hepatology 2003 Dec;38(6):1349-52). Liver tissue was collected 0h, 24h, 38h, and 48h after partial hepatectomy or sham surgery from both young (5-6 months) and old (25-27 months) CB6F1 mice. All control and partial hepatectomy samples were assayed in triplicate. Relative gene expression levels were determined using Affymetrix moe430_2 oligo arrays.
2011-02-16 | E-GEOD-20426 | biostudies-arrayexpress
Project description:The aim of this experiment was to use microarray analysis to compare the response of wild type (WT) and C/EBPbeta deficient (KO) mice during a partial hepatectomy time course in hopes of identifying transcriptional targets of C/EBPbeta. In addition, the WT time course alone was examined to analyze mammalian cellular proliferation in vivo. In the partial hepatectomy model, quiescent hepatocytes reenter the cell cycle and progress in a synchronous fashion. This allows for the elucidation of regulatory networks operative in mammalian cell cycle. (Identification of transcriptional networks during liver regeneration (2004) Journal of Biological Chemistry)
2006-10-03 | E-CBIL-16 | biostudies-arrayexpress
Project description:The process of liver regeneration can be divided into a series of stages that include initial inductive or priming events through cellular mitosis. Following two-thirds liver resection, the liver undergoes the “priming” phase, in which cytokines TNF-a and IL-6 activate their respective receptors in hepatocytes. This leads to the activation of several key transcription factors: NF-kB, AP-1, Stat 3, Stat 1, and C/EBP-b and -d . These transcription factors induce the expression of immediate early genes. HGF is also expressed at this time and involved in the transition of quiescent hepatocytes into the G1 phase of the cell cycle. During the G1 phase, delayed early genes are expressed followed by induction of cell cycle–related genes, both of which require new protein synthesis for their production. Increased expression of FoxM1B and TGF-a occurs at the G1/S transition and is correlated with increased expression of cyclinD1 and decreased expression of cdk inhibitors. During the G2/M phase of the cell cycle, FoxM1B directly elevates cyclinB1, cyclinB2, and cdc25B expression. Additionally, FoxM1B is associated with increased cyclinF and p55cdc, which are involved in completion of the cell cycle following partial hepatectomy. In mice, two-thirds partial hepatectomy promotes proliferation of liver cells and rapid growth of the remaining liver tissue, resulting in complete restoration of organ mass in approximately 7 days (Mackey S. et al. Hepatology 2003 Dec;38(6):1349-52). Liver tissue was collected 0h, 0.5h, 1h, 2h, and 4h after partial hepatectomy or sham surgery from both young (5-6 months) and old (25-27 months) CB6F1 mice. All control and partial hepatectomy samples were assayed in triplicate. Relative gene expression levels were determined using Affymetrix Murine Genome U74 Version 2 Array.
2011-02-16 | E-GEOD-20425 | biostudies-arrayexpress