摘要
目的对大鼠急性呼吸窘迫综合征(ARDS)基因表达谱中的信号传导基因进行研究与分析。方法从正常和ARDS大鼠肺组织中提取总RNA,分离纯化mRNA,经反转录合成掺入生物素标记的cDNA探针,然后与基因芯片杂交,扫描芯片荧光信号图像,用Sam3.0进行统计处理,用博奥生物分子功能注释系统V4.0进行功能分析。随机选择3个差异表达基因,用荧光定量RT-PCR验证。结果在ARDS大鼠肺组织中,信号传导相关基因上调的有2个,下调的有9个,涉及到的相关信号通路11个。结论大鼠ARDS基因表达谱涉及多个信号传导基因和通路的差异表达。
Objective To study the signal transduction pathway genes in acute respiratory distress syndrome （ARDS） of rats by gene chip. Methods Total RNAs were isolated from lungs of normal and ARDS rats respectively. The RNAs were purified by oligotex. Both mRNAs from two kinds of tissues were reversely transcribed to cDNA with incorporation of fluorescent-labelled dUTP to prepare the hybridization probes. The mixed probes were hybridized to cDNA microarray. Picture signals of fluorescence in gene array were scanned and compared by CapitlBio Molecule Annotation System V4. 0. Quantitative fluorescence RT-PCR was used to validate the results of genechip. Results The results showed that there were 2 genes up-regulated and 9 genes down-regulated in lung tissue of ARDS rats,and these genes were involved in 11 signal transduction pathways. Conclusion Many genes of signal transduction pathways expressed in ARDS transcription profiles of rats.
出处
《基础医学与临床》
CSCD
北大核心
2009年第8期835-839,共5页
Basic and Clinical Medicine
基金
山东省医药卫生科技发展计划(2005HW001)
山东省教育厅科研发展计划(J08LG02)
