木糖结合蛋白的鉴定、定位及其作为肝纤维化肝硬化分子标志物的研究

来源 :2015中国酶工程与糖生物工程学术研讨会 | 被引量 : 0次 | 上传用户:a76s333
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  Although the expression levels of total xylose-binding proteins (XBPs) were up-regulated significantly in the activated hepatic stellate cells (HSCs), however, their denomination, distribution, and functions in HSCs were uncharted.Here, 70 XBPs from the activated LX-2 and 64 XBPs from the quiescent LX-2 were isolated, identified and annotated.A total of 30 XBPs were up-regulated (all fold change≥1.5, p≤0.05) and 14 XBPs were down-regulated (all fold chang≤0.67, p≤0.05) in the activated LX-2.The XBPs were localized at the cytoplasm and cytoplasmic membrane in HSCs and cirrhotic liver tissues by cy/histochemistry.The XBPs (i.e., PDIA6 and CFL2) responsible for the regulation of protein binding were up-regulated, and those (i.e., TUBB and MX1)responsible for the regulation of catalytic activity were up-regulated in the activated LX-2.Then, 2 candidates (e.g., PDIA6 and APOA1) were selected for further verification in the sera of hepatitis B virus induced liver fibrosis/cirrhosis patients (HB)using western blotting and serum microarrays.Assessments of PDIA6 and APOA1 as biomarker candidates show a higher discrimination (AUC=0.8985, p<0.0001) relative to APOA1 (AUC=0.8738, p<0.0001) in sera from HB.The precision alteration of the XBPs referred to pathological changes in liver fibrosis/cirrhosis may provide pivotal information to discover the biomarkers for diagnosis of liver fibrosis/cirrhosis and development of new anti-fibrotic strategies.
其他文献
Deep-sea and polar sea regions are known extreme marine environments.A lot of microorganisms survive there, adapting to the extreme environments with various st
会议
脂肪酶(EC 3.1.1.3)是重要的工业用酶,广泛应用于食品、饲料、油酯化工、医药、生物能源和环境等领域.但目前具有工业化生产潜力的脂肪酶基因工程菌资源有限.毕赤酵母表达系
会议
β-羟基腈是医药与化工行业中的重要中间体,其中一种重要的代表就是6-氰基-3,5-二羟基己酸叔丁酯,它是合成阿托伐他汀的关键手性中间体.利用卤代醇脱卤酶催化6-氯-3,5-二羟基
会议
  来自微生物的酶往往具有功能多重性,表现为功能集成。糖苷水解酶家族13中的20亚家族(新普鲁兰酶亚家族)针对α-糖苷键具有多种催化功能,包括水解α-1,4、α-1,6糖苷键、
会议
饲用酶制剂的功效已被畜牧水产养殖业和饲料工业广泛接受,是生物酶产业未来发展的具有重要前景的产品.目前,饲用酶制剂筛选和研制过程中没有采用实际饲料原料作为底物,生产的
会议
  与酶切-连接构建重组质粒方法不同,本文建立了一种不通过限制性内切酶酶切的重组质粒构建方法——二步PCR.第一步常规PCR,用正向引物(IF)和反向杂合引物(IR)扩增黑曲霉木
会议
The PNP/6-methylpurine 2-deoxyriboside (6MePdR) system is an efficient gene-directed enzyme prodrug therapy system with significant antitumor activities.In this
会议
  Aspergillus fumigatus is one of the major sources of cellulases, but its cellulolytic protein expressions on lignocellulosic biomass are still need to be fu
本研究以超高效液相色谱-质谱(UHPLC-MS)为核心、结合荧光标记、外切糖苷酶及MALDI-TOF技术,对人乳、牛乳及婴儿配方奶粉中全部糖蛋白N-链寡糖组的结构进行了解析,比较了不同
会议
  糖基转移酶(Glycosyltransferases,GTs)作为催化糖链合成的工具酶,在酶法或化学酶法合成糖缀复合物和寡糖技术体系发挥重要作用.优良催化特性GT工具酶的缺乏,是制约化学