摘要
背景与目的:核迁移是真核生物生长发育和细胞功能所必需的,核迁移蛋白(nucleardistributionC,NUDC)在核迁移中起着重要作用。本研究旨在检测NUDC在鼻咽癌细胞系CNE-2、HNE-2中的表达情况,初步探讨其抗体对癌细胞活性的影响。方法:在大肠杆菌中表达GST-NUDC重组蛋白并制备其多克隆抗体,间接免疫荧光染色法明确NUDC蛋白在鼻咽癌细胞中的亚细胞定位,Westernblot确定NUDC蛋白在鼻咽癌细胞系中表达情况,MTT法检测NUDC抗体对鼻咽癌细胞生长的影响。结果:鼻咽非癌组织及鼻咽癌细胞中均有NUDC蛋白表达,且其在鼻咽癌细胞中的表达量明显高于鼻咽非癌组织。NUDC蛋白在鼻咽癌细胞中主要位于细胞质核区附近,细胞核也可见少量表达。NUDC蛋白抗体可抑制鼻咽癌细胞生长,且存在着剂量-反应关系。结论:NUDC蛋白在鼻咽癌细胞系中高度表达,且NUDC蛋白抗体在体外可抑制鼻咽癌细胞的生长。
BACKGROUND ＆ OBJECTIVE ＆ Nuclear migration is essential for growth, development, and cellular function of eukaryotes. Nuclear distribution C （NUDC） protein plays an important role in nuclear migration. This study was to detect the expression of NUDC protein in nasopharyngeal carcinoma （NPC） cell lines CNE-2 and HNE-2, and to investigate the effect of anti-NUDC antibody on the growth of both cell lines. METHODS. Soluble fusion protein GST-NUDC was expressed in the cytoplasm of Escherichia coli, and its poly-antibody was prepared. The subcellular localization of NUDC protein in CNE-2 and HNE-2 cells was detected with indirect immunofluorescent staining; the expression of NUDC protein in CNE-2 and HNE-2 cells was detected by Western blot; the effect of anti-NUDC antibody on the growth of CNE-2 and HNE-2 cells was detected by MIT assay. RESULTS： NUDC protein was expressed in both nasopharyngeal non-cancerous tissues and CNE-2 and HNE-2 cells, and its expression was higher in CNE-2 and HNE-2 cells than in nasopharyngeal non-cancerous tissues. NUDC protein in CNE-2 and HNE-2 cells was distributed mainly in the karyolemma of cytoplasm, and in nuclei asymmetrically. Anti-NUDC antibody inhibited the growth of CNE-2 and HNE-2 cells in a dose-dependent manner. CONCLUSIONS： NUDC protein is expressed highly in CNE-2 and HNE-2 cells. Anti-NUDC antibody could inhibit the growth of CNE-2 and HNE-2 cells.
出处
《癌症》
SCIE
CAS
CSCD
北大核心
2006年第6期708-712,共5页
Chinese Journal of Cancer
