中文摘要：

目的：通过检测psiTPTE22基因编码的AK097082及BC031001的mRNA表达情况，确定其是否是基因芯片检测到的在结肠癌组织中高表达的基因，同时探讨该基因在癌症发生发展中的可能作用。方法：应用RT-PCR以及实时荧光定量．PCR法检测psiTPTE22编码的AK097082及BC031001的mRNA在肾、肝、胃、肺、结肠的癌组织和相应癌旁正常组织以及9个肿瘤细胞系和胎盘组织中的表达情况。结果：RT-PCR显示只有psiTPTE22编码的BC031001 mRNA在结肠组织中表达，但实时荧光定量PCR检测及F检验发现其在结肠癌与相应正常组织中的表达差异无统计学意义（P〉0．05），因此psiTPTE22并不是基因芯片检测到的在结肠癌中特异高表达的基因。实时荧光定量．PCR还发现BC031001 mRNA在肾、肝、胃和肺的正常组织中高表达，而在相应的癌组织中表达较低；该mRNA在多个肿瘤细胞系中不表达或表达量很低；在胎盘组织中表达较高。对各组癌组织与相应癌旁正常组织的表达量进行F检验发现，肾、肝、胃、肺的癌旁正常组织和相应癌组织中的表达水平差异有统计学意义（P〈0．05）。结论：psiTPTE22基因编码的BC031001mRNA表达水平与多种癌症呈负相关性，但其原因及其在肿瘤发生发展过程中的作用还有待进一步研究。

英文摘要：

Objective： To detect the mRNA levels of AK097082 and BC031001 encoded by psiTPTE22 gene in order to deter- mine whether psiTPTE22 gene is the microarray-detected over-expressed gene in colon cancer and explore the role of psiTPTE22 in carcinogenesis. Methods： RT-PCR and real-time fluorescence quantitative PCR were used to detect the transcription of AK097082 and BC031001 encoded by psiTPTE22 gene in kidney, liver, stomach, lung, and colon cancer tissues and adjacent normal tissues as well as nine cancer cell lines and placenta tissues. Results： RT-PCR showed that only the mRNA of BC031001 encoded by psiTPTE22 was expressed in colon tissues. Real-time quantitative PCR assay and F test confirmed that there was no significant difference between colon cancer and adjacent normal tissues （P 〉 0.05 ）. So psiTPTE22 was not the specific up-regulated gene in colon cancer detected by microarray. Real-time quantitative PCR assays also confirmed that BC031001 was over-expressed in kidney, liver, stomach, and lung normal tissues but had low expression in corresponding cancer tissues. BC031001 had no expression or weak expression in several cancer cell lines but had relatively high expression in placenta tissues. F tests found that the difference was significant in the expression level of BC031001 between kidney, liver, stomach, and lung adjacent normal tissues and the corresponding cancer tissues （P 〈0.05 ）. Conclusions： The mRNA expression of BC031001 encoded by psiTPTE22 gene has negative correlation with several kinds of cancer. Further studies are needed to reveal the mechanism underlying its down-regulation and its role in carcinogenesis.