期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
胰腺癌血浆蛋白质组学研究 被引量:9
1
作者 邓瑞雪 卢朝辉 +2 位作者 陈原稼 周璐 陆星华 《中国消化内镜》 2007年第7期39-47,共9页
目的利用双向电泳(2-DE)的方法进行胰腺癌的比较蛋白质组学研究,寻找和鉴定与胰腺癌相关或特异的生物标志分子。方法选择12例胰腺癌患者以及与之性别年龄匹配的12例正常人和10例慢性胰腺炎患者的血浆标本进行研究。对去除ALB和IgG等预... 目的利用双向电泳(2-DE)的方法进行胰腺癌的比较蛋白质组学研究,寻找和鉴定与胰腺癌相关或特异的生物标志分子。方法选择12例胰腺癌患者以及与之性别年龄匹配的12例正常人和10例慢性胰腺炎患者的血浆标本进行研究。对去除ALB和IgG等预分离方法进行探索,确定最佳的血浆2-DE方案。通过比较胰腺癌(术前、术后)、正常人和慢性胰腺炎患者的血浆2-DE图谱,寻找差异蛋白并进行质谱鉴定。结果去除ALB和IgG以及超滤的预处理仅使血浆2-DE图谱的局部分辨率提高。共发现并鉴定了5种与胰腺癌或慢性胰腺炎相关的差异蛋白:Haptoglobin(Hp),Hemoglobin(Hb),α1-antitrypsin(α1AT),Immunoglobin J chain(Ig J) and Leucine-rich α2-glycoprotein(LRG)。Hp β链在胰腺癌患者中轻度升高,胰腺癌患者的Hp2-2表型的比例高于正常人,而缺少Hp1-1表型。胰腺癌和慢性胰腺炎患者的血浆Hb高于正常人。α1AT的变化趋势为慢性胰腺炎>胰腺癌>正常人。慢性胰腺炎患者的IgJ链高于胰腺癌患者和正常人,可能来源于血分泌型IgA(sIgA)。胰腺癌患者的LRG水平较正常人和慢性胰腺炎轻度升高。术后Hp、α1AT和LRG均明显升高,未发现术后明显下降的蛋白。结论去除ALB和IgG以及超滤去除大分子的预处理方法对于血浆蛋白的差异比较并无太大优势,但在质谱鉴定方面可以与未处理的方法互相补充。在发现的5种差异蛋白中,Hp的表型、Hb、IgJ链和LRG与胰腺癌或慢性胰腺炎的关系在以往的文献中未见报道,这些差异蛋白对于胰腺癌或慢性胰腺炎的意义及诊断价值还需要进一步的验证。 展开更多
关键词 Pancreatic cancer Protein profile PLASMA Chronic pancreatitis two dimensional gel electrophoresis
下载PDF
它莫西芬诱导乳腺癌MCF-7细胞自噬的比较蛋白质组学研究
2
作者 娄雅欣 钟丽君 +4 位作者 杨彬 陈丽娜 刘丹 邹霞娟 彭嘉柔 《分析测试学报》 CAS CSCD 北大核心 2007年第z1期78-79,共2页
The differentially expressed proteins between normal and tamoxifen-induced autophagic MCF-7 cells were studied by 2-DE combining with mass spectrometric analysis.Totally,there were 668±99 and 550±97 protein ... The differentially expressed proteins between normal and tamoxifen-induced autophagic MCF-7 cells were studied by 2-DE combining with mass spectrometric analysis.Totally,there were 668±99 and 550±97 protein spots detected in the 2-DE maps from normal and autophagic MCF-7 cells respectively,among which 5 changed protein spots were identified by the Q-TOF MS/MS and database search. 展开更多
关键词 PROTEOMICS two dimensional gel electrophoresis Mass spectrometry AUTOPHAGY
下载PDF
Application of proteomics in environmental science
3
作者 Xiaona CHU Jiangyong HU Say Leong ONG 《Frontiers of Environmental Science & Engineering》 SCIE EI CSCD 2009年第4期393-403,共11页
Proteomics involves the separation of proteins,identification of the amino acid sequence of the interested or target proteins,study of the function of the proteins,modification,structure and ultimate assignments to fu... Proteomics involves the separation of proteins,identification of the amino acid sequence of the interested or target proteins,study of the function of the proteins,modification,structure and ultimate assignments to functional pathways in the cell.The proteomic investigations have contributed greatly to human diseases studies,new drugs discovery researches,and environmental science in recent years.This article provides a review on the development of the main proteomic technologies,including both the gel based and non-gel based technologies,and their applications in environmental science.Proteomic technologies have been utilized in the environmental stresses studies to analyze the induction or reduction of proteins at expression level and identify the target proteins to investigate their function in response to environmental stresses,such as high or low pH,oxidation stress,and toxic chemicals.Such protein responses are also helpful to understand the mechanisms of some cellular activities and the functions of some proteins. 展开更多
关键词 PROTEOMICS environmental stress two dimensional(2D)gel electrophoresis mass spectrometry
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部