摘要
目的 研究肿瘤坏死因子相关凋亡诱导配体受体 (tumornecorisisfactorrelatedapoptosisinducedligandreceptor,TRAILR)在颅咽管瘤细胞中的表达 ,探讨其临床意义。方法 采用免疫组化方法检测颅咽管瘤细胞及正常脑组织中TRAILR蛋白的表达。同时 ,采用原位杂交方法检测颅咽管瘤中诱骗受体 (Decoyreceptor,DcR)在mRNA水平的表达。 结果 免疫组化染色显示 ,2 4例颅咽管瘤均大量表达死亡受体 (Deathreceptor,DR)DR4和DR5 ,7例 (2 9.2 % )表达DcR1 ,5例 (2 0 .8% )表达DcR2 ,而 1 6例正常脑组织普遍表达DcR ,7例 (43 .8% )表达DR4 ,5例 (31 .3 % )表达DR5。颅咽管瘤组织中DR的高表达以及DcR的低表达不同于正常脑组织中DR的低表达及DcR的高表达 ,两者间有显著差异 (P <0 .0 1 )。原位杂交显示 2 4例颅咽管瘤组织分别有 1 9例 (79.2 % )DcR1和 1 5例 (62 .5 % )DcR2在mRNA水平呈强阳性表达 ,DcR在转录水平的表达明显高于翻译水平 (P <0 .0 1 )。结论 颅咽管瘤细胞中普遍存在DR的高表达和DcR的低表达 ,DcR在颅咽管瘤中限制性表达的调控位于转录后水平。这可能为颅咽管瘤的凋亡诱导治疗提供新的靶点和新的策略。
Objective To investigate the expression and significance of tumor necorisis factor related apoptosis induled ligand receptor(TRAILR) in human craniopharyngioma.Methods The expression of TRAILR was determined by immunohistochemistry and in situ hybridization in 24 samples of craniopharyngioma and 16 samples of normal brain tissue.Results With low decoy receptor(DcR) expression in partial craniopharyngioma cells and low death receptor(DR) expression in partial normal brain cells,DR was expressed highly in all craniopharyngioma samples while DcR in most normal brain tissue. High DR expression and low DcR expression in craniopharyngioma tissue differed from low DR expression and high DcR expression in normal brain tissue(P<0.01). We also found that there was significant difference between the expression of DcR in mRNA level and that in protein level(P<0.01).Conclusions High DR expression and low DcR expression is prevalent in craniopharyngioma tissue.The control of DcR expression lay in protein level.This may contribute to the apoptosis-inducing therapy of craniopharyngioma.
出处
《实用儿科临床杂志》
CAS
CSCD
北大核心
2005年第1期37-39,i003,共4页
Journal of Applied Clinical Pediatrics
基金
"十五""2 1 1工程"重点学科建设项目 [教重办 (2 0 0 2 )第2号 ]
关键词
颅咽管瘤
肿瘤坏死因子相关凋亡诱导配体
凋亡
craniopharyngioma
tumor necorisis factor related apoptosis induced ligand receptor(TRAIL)
apoptosis
