摘要
目的: 分析胃癌中11种CT抗原(cancer/testisantigen)基因的表达分布及NY ESO 1蛋白引发的自身体液免疫应答,为胃癌的特异性肿瘤疫苗治疗提供依据。方法: 利用RT-PCR方法,检测101例胃癌患者肿瘤标本和对应正常胃黏膜中11种CT抗原基因的表达。ELISA方法检测抗NY ESO 1抗体。利用NY ESO 1的单抗E978,应用免疫组化方法检测组织切片中NY ESO 1抗原物质。结果: 101例胃癌患者中, 74. 3%的患者至少表达1种检测的CT抗原基因。12例患者表达NY ESO 1mRNA, 5例可以检测到NY ESO 1抗原蛋白以及针对NY ESO 1抗原的体液免疫反应。结论: 胃癌中表达多种CT抗原基因,表达率较高的MAGE 3,SSX 4和NY ESO 1 /LAGE 1蛋白等可作为肿瘤疫苗的备选抗原,其中NY ESO 1蛋白的免疫原性得到验证。CT抗原的多价肿瘤疫苗在胃癌治疗中具有一定的可行性。
Objective:To study the expression of 11 cancer-testis (CT) genes and autologous humoral immune response to NY-ESO-1 in gastric carcinoma in China to provide some data for developing a vaccine against this cancer. Methods: Pathology tests were conducted in 101 gastric carcinoma samples,including tumor tissue and paired adjacent normal non-tumor tissue. Reverse transcription-polymerase chain reaction (RT-PCR) was used to test for 11 CT antigen gene expression and ELISA for autologous humoral immune response to NY-ESO-1.The antigen of NY-ESO-1 was also detected in tumor tissues by mAb E978 in IHC.Results: About 74.3% of the samples expressed at least one CT antigen,and the most frequently expressed one was MAGE-3 (41.6%). Twelve out of the 101 samples (11.9%) were found to be NY-ESO-1 mRNA positive. Simultaneously, autologous humoral immune response to NY-ESO-1 was detected in 6 of 12 NY-ESO-1 mRNA positive patients. Conclusion: Multiple CT genes were expressed in gastric cancer samples. MAGE-3,SSX-1,SSX-4, NY-ESO-1/LAGE-1, and MAGE-1 can be chosen as candidate antigens for cancer vaccines due to their higher expression rate. The potential of a multivalent CT antigen vaccine, including NY-ESO-1 and MAGE-3 along with other CT antigens, should be evaluated in patients with gastric cancer.
出处
《北京大学学报（医学版）》
CAS
CSCD
北大核心
2005年第3期252-256,共5页
Journal of Peking University:Health Sciences
基金
北京市科技新星资助项目 (H0208321370130 )
北京大学"211"项目
国家科技部"863"高技术研究发展计划基金(2001AA227101)
北京市科委"重大疾病遗传资源库的建立"项目基金(9550213200)资助~~
