摘要
目的 制备抗 p1 6 INK- 4多克隆抗体 ,并探计 p1 6蛋白的表达与胃癌预后的关系。方法 以人工合成 p1 6 INK- 4N-末端 1 3个氨基酸多肽与匙孔虫戚血蓝蛋白 (KLH)交联物为抗原 ,制备抗 p1 6多克隆抗体 (Po Abs)。使用此多抗 ,采用 S—P免疫组织化学方法 ,检测 30例胃癌组织中 p1 6蛋白的表达。结果 30例胃癌组织中 ,9例 p1 6表达阴性随访 8年死亡率 1 0 0 %、中位生存期 8个月 ;2 1例表达阳性死亡率 5 7.1 %、中位生存期 33个月 ,二者生存期存在显著性差异 (P<0 .0 1 )。结论 (1 )使用自制 Po Abs可替代进口多抗体在临床、科研中的应用 ;(2 )提示 p1 6蛋白的表达与胃癌预后关系密切。
Objective To prepara Polyclonal antibodies(PoAbs) of p16 INK\|4 and investigate the relationship between expression of p16 and prognosis of gastric cancer.Methods (1)PoAbs against peptide containing 13 amino acids of the N-end of human p16 was obtained in rabbits by immunization with the peptide conjugated with KLH. (2)The expression of p16 protein in 30 gastric cancer was studied immunohistochemically.Results In 30 cases gastric cancer with 8-years follow-up period, 9 cases of p16 expression negative were died(9/9), The medium survival time was 8 months; 12 cases of p16 expression positive were died(12/12), with medum survival time for 33 months. Patients with negative p16 expression survived for a significantly shorter period of time than those with positive p16 expression (P<0.01). Conclusion (1)PoAbs to p16 obtained in this study are fully comparable to that ones purchased abroad both in specificity and in sensitivity for IHC assay of the paraffin embedded tissue.(2)expression of p16 gene is closely related to the prognsis of gastric cancer.
出处
《肿瘤防治研究》
CAS
CSCD
2001年第3期188-190,共3页
Cancer Research on Prevention and Treatment
基金
北京市科学技术委员会基金资助项目( 952 1 0 0 90 0 )
