PMID- 21764095 OWN - NLM STAT- MEDLINE DCOM- 20120110 LR - 20110919 IS - 1532-3072 (Electronic) IS - 0040-8166 (Linking) VI - 43 IP - 5 DP - 2011 Oct TI - Genome-wide expression profiling of hepatic oval cells after partial hepatectomy in rats. PG - 291-303 LID - 10.1016/j.tice.2011.06.001 [doi] AB - To examine the changes of biological activities in hepatic oval cells (HOCs) elicited by 70% partial hepatectomy (PH) and understand the relationship between this cell and liver regeneration (LR), this study isolated and obtained the high purity HOCs (>/= 95%) from rat regenerating livers, and then monitored gene expression profiling of rat hepatic oval cells following surgical operation. Results showed that there were LR-related 1059 genes. These genes were grossly classified into three groups using a fold change cut-off threshold of three-fold: up-regulation, down-regulation and up/down regulation. Analyses of gene expression patterns combined with gene functional categorization suggested that genes in the categories "nucleic acid metabolism" and "cell cycle" were dominated by up-regulated expression. Genes in the functional groups "cell metabolism" and "oxidation reduction" were significantly enriched in expression pattern characterized by down-regulation. According to above mentioned results, the synchronized induction of DNA replication and cell proliferation-involved genes suggested that the peak of oval cell proliferation might occur between 30 and 36 h post-PH. The amino acid transformation-involved genes were down-regulated at the early phase of LR, which perhaps trigger the storage of those amino acids essential for protein synthesis. Reduced oxidative-reduction activity at early phase might be related to negative influence of surgical operation on its detoxification capacity. Conclusively, the genome-wide transcriptional analysis of oval cells would contribute to our understanding of the nature of LR at cell level. CI - Copyright (c) 2011. Published by Elsevier Ltd. FAU - Xu, Cunshuan AU - Xu C AD - College of Life Science, Henan Normal University, Xinxiang 453007, China. cellkeylab@126.com FAU - Chen, Xiaoguang AU - Chen X FAU - Chang, Cuifang AU - Chang C FAU - Wang, Gaiping AU - Wang G FAU - Wang, Wenbo AU - Wang W FAU - Zhang, Lianxing AU - Zhang L FAU - Zhu, Qiushi AU - Zhu Q FAU - Wang, Lei AU - Wang L FAU - Zhang, Fuchun AU - Zhang F LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110720 PL - Scotland TA - Tissue Cell JT - Tissue & cell JID - 0214745 RN - 0 (Cell Cycle Proteins) SB - IM MH - Animals MH - Cell Cycle Proteins/genetics/metabolism MH - Cell Differentiation MH - Cell Survival MH - Cluster Analysis MH - Down-Regulation MH - *Gene Expression Profiling MH - Gene Expression Regulation MH - *Hepatectomy MH - Hepatocytes/*cytology/physiology MH - Immunohistochemistry MH - Liver/cytology/physiology MH - *Liver Regeneration MH - Oligonucleotide Array Sequence Analysis MH - Oxidation-Reduction MH - Protein Biosynthesis MH - Rats MH - Rats, Sprague-Dawley MH - Time Factors MH - Up-Regulation EDAT- 2011/07/19 06:00 MHDA- 2012/01/11 06:00 CRDT- 2011/07/19 06:00 PHST- 2011/01/12 00:00 [received] PHST- 2011/06/03 00:00 [revised] PHST- 2011/06/06 00:00 [accepted] PHST- 2011/07/19 06:00 [entrez] PHST- 2011/07/19 06:00 [pubmed] PHST- 2012/01/11 06:00 [medline] AID - S0040-8166(11)00065-6 [pii] AID - 10.1016/j.tice.2011.06.001 [doi] PST - ppublish SO - Tissue Cell. 2011 Oct;43(5):291-303. doi: 10.1016/j.tice.2011.06.001. Epub 2011 Jul 20.