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.
<i>In silico</i> analysis of expression data during the early priming stage of liver regeneration after partial hepatectomy in rat.
Specimen part, Treatment, Time
View SamplesThe liver has extraordinary powers of regeneration after partial hepatectomy (PH). Changes of gene expression play a key role in cell proliferation and differentiation during liver regeneration (LR). To understand the molecular mechanisms underlying LR, this study was designed to assess the changes of rat hepatic gene expression in a timely manner.
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Specimen part, Treatment, Time
View SamplesAcute hepatic failure (AHF) usually occurs due to the rapid necrosis of liver cells or serious liver injury induced by a variety of pathogenic factors.
Comparative analysis of gene expression profiles of OPN signaling pathway in four kinds of liver diseases.
Specimen part
View SamplesAutonomic nervous system is widely distributed in liver, and some reserchers have found that disruppted autonomic nerves will delay liver regeneration.
Role of the autonomic nervous system in rat liver regeneration.
Specimen part
View SamplesHepatic cancer (HC), as one of the common malignancies in the world, is characterized by malignant cell prolifeHCion and growth, and hepatocarcinogenesis covers the stages of non-specific liver injury, liver fibrosis, liver cirrhosis, dysplasia nodules and finally liver carcinoma
Correlation between liver cancer occurrence and gene expression profiles in rat liver tissue.
Specimen part
View SamplesLiver cirrhosis (LC) is pathologically characterized with abnormality and necrosis of hepatic cells, proliferation of fibrous tissue, nodular regeneration and pseudolobule formation.
Comparative analysis of gene expression profiles of OPN signaling pathway in four kinds of liver diseases.
Specimen part
View SamplesNonalcoholic fatty liver disease (NAFLD) is a common disorder characterized by excessive hepatic fat accumulation, and potentially resulting in non-alcoholic steatohepatitis (NASH), liver cirrhosis (LC) and end-stage liver disease
Correlation analysis between gene expression profile of rat liver tissues and high-fat emulsion-induced nonalcoholic fatty liver.
Specimen part
View SamplesReactive oxygen species (ROS) have been characterized as both important signaling molecules and universal stressors that mediate many developmental and physiological responses. So far, details of the transcriptional mechanism of ROS-responsive genes are still largely unknown. In the study reported herein, we identified eight potential ROS-responsive cis-acting elements (ROSEs) from the promoters of genes upregulated by ROS. We also found that the APETALA2 (AP2/EREBP)-type transcription factor ERF6 could bind specifically to the ROSE7/GCC box. Co-expression of ERF6 enhanced luciferase activity driven by ROSE7. ERF6 interacted physically with mitogen-activated protein kinase 6 (MPK6), and also served as a substrate of MPK6. MPK6-mediated ERF6 phosphorylation at both Ser 266 and Ser 269 affected the dynamic alternation of ERF6 protein, which resulted in changes in ROS-responsive gene transcription. These data might provide new insight into the mechanisms that regulate ROS-responsive gene transcription via a complex of MPK6, ERF6, and the ROSE7/GCC box.
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Specimen part, Treatment
View SamplesTo better understand the regulatory mechanisms of water stress response in wheat, the transcript profiles in roots of two wheat genotypes, namely, drought tolerant 'Luohan No.2' (LH) and drought susceptible 'Chinese Spring' (CS) under water-stress were comparatively analyzed by using the Affymetrix wheat GeneChip.
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Specimen part, Treatment
View SamplesAllopolyploidy, entailing whole genome duplication (WGD) of merged divergent genomes of different species, often instigates transcriptome shock, whereby both total gene expression level and homeolog expression partitioning can be disrupted and remodeled. Little is known about the extent to which the parental expression-conserved genes will be disrupted/remodeled by allopolyploidization, nor the evolutionary relevancy of shock-induced expression repatterning. Here, by microarray-based gene expression profiling and gene-specific cDNA-pyrosequencing, we assessed transgenerational transcriptome shock in a synthetic allotetraploid wheat (AT2) with karyotype and basic morphology mimicking those of natural tetraploid wheat, Triticum turgidum. We show that the transcriptome shock in AT2 is exceptionally strong that it disrupted intrinsically conserved parental gene expression, and resulted in extensive expression nonadditivity in the newly formed allotetraploid plants. At total expression level, a substantial proportion of shock-induced novel expression, especially over-transgressive expression, was rapidly stabilized already in early generations of AT2. Extensive remodeling of homeolog expression occurred in AT2, including those genes that showed additive total expression, and which generated subgenome expression dominance, a pattern that mirrors T. turgidum. Thus, the shock-induced new patterns of gene expression at both the total expression level and subgenome homeolog partitioning showed evidence of evolutionary persistence. Complex relationships between homeolog expression remodeling and nonadditive total expression were observed in a tissue-specific manner.
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Specimen part
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