Objective:PCBP1 is a family member of heterogeneous nuclear ribonucleoproteins (hnRNPs) that belong to RNA-binding proteins and bear three KH domains. The protein plays a pivotal role in post-transcriptional regulatio...Objective:PCBP1 is a family member of heterogeneous nuclear ribonucleoproteins (hnRNPs) that belong to RNA-binding proteins and bear three KH domains. The protein plays a pivotal role in post-transcriptional regulation for RNA metabolism and RNA function in gene expression. We hypothesized and were going to identify that the regulatory function of PCBP1 is performed through different complexes of proteins that include PCBP1. Methods:To test our hypothesis,approaches of protein wal-king with a yeast two-hybrid system (Y2H),pulling down in yeasts,co-immunoprecipitation and immunofluorescent microscopy assay were employed in this study. The PCBP1 was used as the initial "walker" to search for its interaction partner(s). Results:Candidate proteins including MYL6,PECAM1,CSH1,RAB7,p57KIP2,ACTG1,RBMS1 and PSG4-like were identified with selection mediums and preceding methods. Conclusion:With these candidate protein molecules,some protein complexes associating with PCBP1 are proposed,which may help in a better understanding of physiological functions of PCBP1 and proved evidence that PCBP1 is involved in variant biological pathways.展开更多
目的探求青稞酥油饮食对小鼠肠道微生物分布及葡聚糖硫酸钠(DSS)诱导的小鼠慢性溃疡性结肠炎的影响。方法定制饮食,将标准鼠繁殖料(N鼠料)中的大豆油和玉米次粉替换为等比例的酥油和生青稞粉,以制成定制饲料(C鼠料)。将28只5周龄雄性小...目的探求青稞酥油饮食对小鼠肠道微生物分布及葡聚糖硫酸钠(DSS)诱导的小鼠慢性溃疡性结肠炎的影响。方法定制饮食,将标准鼠繁殖料(N鼠料)中的大豆油和玉米次粉替换为等比例的酥油和生青稞粉,以制成定制饲料(C鼠料)。将28只5周龄雄性小鼠随机分为4组,每组7只:1)NW组:饲养以N鼠料和水;2)ND组:饲养以N鼠料和1.8%DSS;3)CW组:饲养以C鼠料和水;4)CD组:饲养以C鼠料和1.8%DSS。以7 d 1.8%DSS溶液之后换10 d蒸馏水为1个周期,共进行3个周期完成建模。匹拉米洞法测定小鼠粪便隐血进行DAI评分,选取结肠组织HE染色及粪便微生物16S rRNA高通量测序。结果青稞酥油饮食可提高正常小鼠肠道菌群丰度,改善肠道菌群组成,其中别样棒菌属增加。加入DSS诱导溃疡性结肠炎模型后,青稞酥油饮食组DAI评分显著增高(P<0.05),组织学检测结肠黏膜糜烂溃疡且肠组织腺体排列混乱,小鼠肠道菌群丰度和多样性降低(P<0.05),但梭菌属、萨特氏菌属增加(P<0.05)。结论青稞酥油饮食可增加正常小鼠肠道菌群丰度,改善肠道菌群组成,但对于DSS诱导的慢性溃疡性结肠炎炎性反应无显著改善。展开更多
基金Supported in part by the “985” program(985-2-035-39) of the Chinese Ministry of Education“973” project(2007CB511902)of the Chinese Ministry of Sciences and Technology+1 种基金National Nature Science Foundation(30671157)the NewYork State Office of Mental Retardation and Developmental Disabilities(NYSOMRDD)~~
文摘Objective:PCBP1 is a family member of heterogeneous nuclear ribonucleoproteins (hnRNPs) that belong to RNA-binding proteins and bear three KH domains. The protein plays a pivotal role in post-transcriptional regulation for RNA metabolism and RNA function in gene expression. We hypothesized and were going to identify that the regulatory function of PCBP1 is performed through different complexes of proteins that include PCBP1. Methods:To test our hypothesis,approaches of protein wal-king with a yeast two-hybrid system (Y2H),pulling down in yeasts,co-immunoprecipitation and immunofluorescent microscopy assay were employed in this study. The PCBP1 was used as the initial "walker" to search for its interaction partner(s). Results:Candidate proteins including MYL6,PECAM1,CSH1,RAB7,p57KIP2,ACTG1,RBMS1 and PSG4-like were identified with selection mediums and preceding methods. Conclusion:With these candidate protein molecules,some protein complexes associating with PCBP1 are proposed,which may help in a better understanding of physiological functions of PCBP1 and proved evidence that PCBP1 is involved in variant biological pathways.
文摘目的探求青稞酥油饮食对小鼠肠道微生物分布及葡聚糖硫酸钠(DSS)诱导的小鼠慢性溃疡性结肠炎的影响。方法定制饮食,将标准鼠繁殖料(N鼠料)中的大豆油和玉米次粉替换为等比例的酥油和生青稞粉,以制成定制饲料(C鼠料)。将28只5周龄雄性小鼠随机分为4组,每组7只:1)NW组:饲养以N鼠料和水;2)ND组:饲养以N鼠料和1.8%DSS;3)CW组:饲养以C鼠料和水;4)CD组:饲养以C鼠料和1.8%DSS。以7 d 1.8%DSS溶液之后换10 d蒸馏水为1个周期,共进行3个周期完成建模。匹拉米洞法测定小鼠粪便隐血进行DAI评分,选取结肠组织HE染色及粪便微生物16S rRNA高通量测序。结果青稞酥油饮食可提高正常小鼠肠道菌群丰度,改善肠道菌群组成,其中别样棒菌属增加。加入DSS诱导溃疡性结肠炎模型后,青稞酥油饮食组DAI评分显著增高(P<0.05),组织学检测结肠黏膜糜烂溃疡且肠组织腺体排列混乱,小鼠肠道菌群丰度和多样性降低(P<0.05),但梭菌属、萨特氏菌属增加(P<0.05)。结论青稞酥油饮食可增加正常小鼠肠道菌群丰度,改善肠道菌群组成,但对于DSS诱导的慢性溃疡性结肠炎炎性反应无显著改善。
