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Expression patterns and action analysis of genes associated with inflammatory responses during rat liver regeneration

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World Journal of Gastroenterology 2007年第3期13卷 369-377页

作者： Heng-Yi Shao Li-Feng Zhao Cun-Shuan Xu College of Life Science Henan Normal University Xinxiang 453007 Henan Province China Key Laboratory for Cell Differentiation Regulation Xinxiang 453007 Henan Province China

AIM： To study the relationship between inflammatory response and liver regeneration （LR） at transcriptional level.METHODS： After partial hepatectomy （PH） of rats, the genes associated with inflammatory response were obtained according to the databases, and the gene expression changes during LR were checked by the rat genome 230 2.0 army. RESULTS： Two hundred and thirty-nine genes were associated with liver regeneration. The initial and total expressing gene numbers found in initiation phase （0.5-4 h after PH）, G0/G1 transition （4-6 h after PH）, cell proliferation （6-66 h after PH）, cell differentiation and structure-function reconstruction （66-168 h after PH） of liver regeneration were 107, 34, 126, 6 and 107, 92, 233, 145 respectively, showing that the associated genes were mainly triggered at the beginning of liver regeneration, and worked at different phases. According to their expression similarity, these genes were classified into 5 groups： only up-regulated, predominantly up-, only down-, predominantly down-, up- and down-, involving 92, 25, 77, 14 and 31 genes, respectively. The total times of their up- and down-regulated expression were 975 and 494, respectively, demonstrating that the expressions of the majority of genes were increased, and that of a few genes were decreased. Their time relevance was classified into 13 groups, showing that the cellular physiological and biochemical activities were staggered during liver regeneration. According to gene expression patterns, they were classified into 33 types, suggesting that the activities were diverse and complex during liver regeneration. CONCLUSION： Inflammatory response is closelyassociated with liver regeneration, in which 239 LR- associated genes play an important role.

关键词： Partial hepatectomy rat genome 230 2.0array Inflammatory response Genes associated with liver regeneration

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Expression patterns and action analysis of genes associated with physiological responses during rat liver regeneration:Cellular immune response

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World Journal of Gastroenterology 2006年第46期12卷 7514-7521页

作者： Lian-Xing Zhang Li-Feng Zhao An-Shi Zhang Xiao-Guang Chen Cun-Shuan Xu College of Life Science Henan Normal University Xinxiang 453007 Henan ProvinceChina Key Laboratory for Cell Differentiation Regulation Xinxiang 453007Henan Province China

AIM： To study the cellular immune response during rat liver regeneration （LR） at a transcriptional level. METHODS： Genes associated with the cellular immune response were obtained by collecting the data from databases and retrieving articles. Gene expression changes during LR were detected by rat genome 230 2.0 array. RESULTS： A total of 127 genes were found to be associated with LR. The number of initially and totally expressing genes in the initial phase of LR [0.5-4 h after partial hepatectomy （PH）], transition from Go-G, （4-6 h after PH）, cell proliferation （6-66 h after PH）, cell differentiation and structure-function reconstruction （66-168 h after PH） was 54, 11, 34, 3 and 54, 49, 70, 49 respectively, illustrating that the associated genes were mainly triggered at the initiation of LR, and worked at different phases. According to their expression similarity, these genes were classified into 41 up-regulated, 21 predominantly up-regulated, 41 down-regulated, 14 predominantly down-regulated, 10 similarly up-regulated and down-regulated genes, respectively. The total up- and down-regulated expression times were 419 and 274, respectively, demonstrating that the expression of most genes was increased while the expression of a small number of genes was decreased. Their time relevance was classified into 14 groups, showing that the cellular physiological and biochemical activities were staggered during LR. According to the gene expression patterns, they were classified into 21 types, showing the activities were diverse and complicated during LR.CONCLUSION： Antigen processing and presentation are enhanced mainly in the forepart, prophase and anaphase of LR. T-cell activation and antigen elimination are enhanced mainly in the forepart and prophase of LR. A total of 127 genes associated with LR play an important role in cellular immunity.

关键词： Partial hepatectomy rat genome 230 2.0array Cellular immune response Genes associated with liver regeneration

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Correlation analysis of liver tumor-associated genes with liver regeneration

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World Journal of Gastroenterology 2007年第24期13卷 3323-3332页

作者： Cun-Shuan Xu Shou-Bing Zhang Xiao-Guang Chen Salman Rahman College of Life Science Henan Normal University Xinxiang 453007 Henan Province China Key Laboratory for Cell Differentiation Regulation Xinxiang 453007 Henan Province China Laboratory of Thrombosis and Vascular Remodelling Division of Cardiovascular Medicine King's College London School of Medicine St Thomas' Hospital Lambeth Palace Road London SE1 7EH United Kingdom

AIM: To study at transcriptional level the similarities and differences of the physiological and biochemical activities between liver tumor (LT) and regenerating liver cells. METHODS: LT-associated genes and their expression changes in LT were obtained from databases and scientific articles, and their expression profiles in rat liver regeneration (LR) were detected using rat genome 230 2.0 array. Subsequently their expression changes in LT and LR were compared and analyzed. RESULTS: One hundred and twenty one LT-associated genes were found to be LR-associated. Thirty four genes were up-regulated, and 14 genes were down-regulated in both LT and regenerating liver; 20 genes up-regulated in LT were down-regulated in regenerating liver; 21 up-regulated genes and 16 down-regulated genes in LT were up-regulated at some time points and down-regulated at others during LR. CONCLUSION: Results suggested that apoptosis activity suppressed in LT was still active in regenerating liver, and there are lots of similarities and differences between the LT and regenerating liver at the aspects of cell growth, proliferation, differentiation, migration and angiogenesis.

关键词： Partial hepatectomy rat genome 230 2.0array Apoptosis Liver regeneration-associated gene Liver tumor-associated gene

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Expression patterns and action analysis of genes associated with drug-induced liver diseases during rat liver regeneration

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World Journal of Gastroenterology 2006年第43期12卷 6966-6972页

作者： Qian-Ji Ning Shao-Wei Qin Cun-Shuan Xu College of Life Science HenanNormal University Xinxiang 453007 Henan Province China Key Laboratory for Cell Differentiation Regulation Xinxiang 453007 Henan Province China

AIM: To study the action of the genes associated with drug-induced liver diseases at the gene transcriptional level during liver regeneration (LR) in rats. METHODS: The genes associated with drug-induced liver diseases were obtained by collecting the data from databases and literature, and the gene expression changes in the regenerating liver were checked by the rat genome 230 2.0 array. RESULTS: The initial and total expression numbers of genes occurring in phases of 0.5-4 h after partial hepatectomy (PH), 4-6 h after PH (G0/G1 transition), 6-66 h after PH (cell proliferation), 66-168 h after PH (cell differentiation and structure-function reconstruction) were 21, 3, 9, 2 and 21, 9, 19, 18, respectively. It is illustrated that the associated genes were mainly triggered at the initial stage of LR and worked at different phases. According to their expression similarity, these genes were classified into 5 types: only up- regulated (12 genes), predominantly up-regulated (4 genes), only down-regulated (11 genes), predominantly down-regulated (3 genes), and approximately up-/ down-regulated (2 genes). The total times of their up- and down-expression were 130 and 79, respectively, demonstrating that expression of most of the genes was increased during LR, while a few decreased. The cell physiological and biochemical activities during LR were staggered according to the time relevance and were diverse and complicated in gene expression patterns. CONCLUSION: Drug metabolic capacity in regenerating liver was enhanced. Thirty-two genes play important roles during liver regeneration in rats.

关键词： Partial hepatectomy rat genome 230 2.0array Drug-induced liver diseases Genes associatedwith liver regeneration

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