特发性高草酸尿症大鼠肝脏差异表达基因的筛选研究

目的 从基因水平探索特发性高草酸尿症(IH)的发病机制,筛选可能导致其发病的相关基因.方法应用含有26 962条大鼠全基因组寡核苷酸芯片,研究3只IH模型大鼠和3只正常大鼠肝脏组织基因表达谱的差异性,同时进行生物信息学分析.结果 在IH模型大鼠与正常大鼠肝脏组织之间存在差异表达基因147条,其中上调基因123条,下调基因24条,包括细胞受体、免疫相关、细胞信号和传递蛋白、代谢蛋白、发育相关等多种基因.结论 基因芯片能有效筛选出IH模型大鼠肝脏中的差异基因,显著的基因差异表达与其发病机制可能存在相关性.

Expression profile in the liver of rats with idiopathic hyperoxaluria

Objective To investigate differentially expressed genes in the liver of rats with idio-pathic hyperoxaluria by cDNA microarray. Methods Three male rats with idiopathic hyperoxaluria were set as study group, 3 normal ones as control. Total RNA was isolated by one-step protocol from the liver of rats in the 2 groups and mRNA was purified, reversely transcribed, labeled with Cy3 or Cy5 and hybridized to gene chip containing 26 962 target genes of rat. The differences in gene expres-sion profile between the 2 groups were analyzed by bioinformatics methods. Results Comparative a-nalysis revealed that the expression of 123 genes was up-regulated and 24 genes was down-regulated by two-fold in the liver. These genes were associated with cell receptor, immune, cell signal transduc-tion, amino acid metabolism, protein translation, cell proliferation and others. Conclusion cDNA microarray could be used effectively to screen differentially expressed genes in the liver of rats with idi-opathic hyperoxaluria in which many different kinds of genes were involved.