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Articles by Zhicai Zuo
Total Records ( 2 ) for Zhicai Zuo
  Zhicai Zuo , Shan Liao , Xinqiao Qi , Yue Yi , Zhiwen Xu , Ling Zhu , Wanzhu Guo and Hengmin Cui
  BCL-10 is an important functional and an apoptotic regulator gene inducing the organismic innate immunity. It has not been reported that the BCL-10 protein of porcine in normal level could motivate immune factor to produce. Bioinformatics analysis was performed to predict the characteristics of BCL-10, the results indicated that BCL-10 gene encoded a polypeptide, molecular mass of 45 Ku and comprising 233 amino acids. The prediction of secondary structure showed that BCL-10 had 9 alpha-helix, 1 beta-sheet, 12 turn and 14 random coil. The protein had twenty transmembrane regions, an CARD structure field which located in 15-100 amino acids and no signal peptide, the hydrophobic index was between -2.500 and 1.400. The phylogenetic tree showed that BCL-10 was similar to human (the homology index was >95%) and had a distant relationship to mouse. To identify the activity of BCL-10, the protein with a His-tag was expressed in E. coli Rosetta and purified. The purified protein showed an obvious effect of cell proliferation. Cloning and analysising of BCL-10 gene which laid foundation to further research and exploitation.
  Zhicai Zuo , Hengmin Cui , Xi Peng , Junliang Deng , Jing Fang , Ya Wang and Zhihua Ren
  The objective of this study was to determine cytokine and chemokine microarray profiles in lung and Hilar Nodes (HN) from pigs infected with Actinobacillus Pleuropneumoniae (APP). Twenty pigs were randomly assigned to one of two groups: Control Group (CG) and inoculated with APP (TG). The infected-APP pigs’ lung exhibited significantly (p<0.05) greater levels of chemokines CCL2, CCL20, IL8 and slightly increase levels of chemokines CCL4, CCL5 and CXCL2 while significantly(p<0.05) decrease levels of chemokines CXCL10 and CXCL12. APP infection significantly (p<0.05 or 0.01) stimulated expression of cytokines IL-18, IL-6, TNF, GM-CSF, CASP3, CASP8 and significantly (p< 0.05 or 0.01) suppressed expression of cytokines CD40, IRF1 in lung. Cytokines in infected-APP pigs’ lung, IL-1A, IL-27, IRF3, IL-10 were slightly increased and CASP1, IRF7, IL-12B, IL-2 were slightly decreased. Relative cytokine and chemokine microarray data in HN indicated that APP infection significantly (p<0.05) stimulated expression of cytokine IL-6 and significantly (p<0.05 or 0.01) suppressed expression of cytokines CXCL12, CD40 and CASP1. In conclusion, 26 cytokine and chemokines mRNA expression levels in lung and HN obtained from infected-APP or control swines were elucidated in this study. This research provided evidence that the increased severity of lesions in the infected-APP swines was associated mainly with alterations of cytokine and chemokines microarray profiles, especialy in lung. The changes of all the cytokines in lung and HN can lead stem cells to produce granulocytes (neutrophils, eosinophils and basophils) and monocytes and also promoted neutrophil and macrophages to phagocytose bacterial and foreign antigen at the site of inflammation. Defense function of pig infection with APP was enhanced while immune function was weakened.
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