摘要
目的:研究新基因Mip5(GenBank登录号AY553870)的特性及其在生理或病理状态下的表达变化。方法:运用BLAST,spidey,psort,ClustalW等生物信息学方法对Mip5的相应特性进行分析,并运用逆转录聚合酶链式反应(RT-PCR)研究基因Mip5的表达。结果:生物信息学分析显示Mip5位于第13号染色体,其开放读码框为909bp,编码302个氨基酸,含有8个外显子和7个内含子。Mip5蛋白含有6个Kelch结构。RT-PCR检测发现正常时,Mip5在心,脑,肾等组织中表达丰度较高,而在骨骼肌和肝脏组织未能检测到其表达;缺血/再灌注损伤后不同时间心肌组织中Mip5的表达较假手术组明显升高,在再灌注后3h达高峰,12h恢复至基线水平。结论:上述结果表明Mip5为缺血/再灌注相关基因,可能在心肌缺血病理过程中发挥作用。
Objective To determeine the characteristics of a novel gene Mip5（GenBank accession number AY553870）and its expression under physiological and pathological conditions. Methods The characteristics of Mip5 were analyzed by bioinformatic programs including BLAST, spidey, psort, ClustalW and so on. RT-PCR was performed to detect Mip5 expression. Results Bioinformatic analysis showed that Mip5 gene lied in the 13th chromosome and contained 8 exons and 7 introns, its open reading frame contained 909 bp and its protein production was 302 amino acid residues including 6 kelth domains. Under normal conditions, MIP5 expressed abundantly in the heart, brain and kidney, but its expression could not be detected in the liver and muscle. Expression of Mip5 genc was increased significantly after ischemia-reperfusion compared with the sham groups, and reached its peak at 3 h and recovered at 12 h after the reperfusion. Conclusion Mip5 gene is a novel gene containing a putative open reading frame of 302 amino acids residues and may play an important role in rat cardiomyocytes suffering ischemia processing.
出处
《中南大学学报（医学版）》
CAS
CSCD
北大核心
2005年第5期515-520,共6页
Journal of Central South University ：Medical Science
基金
国家重点基础发展规划项目(973)(G2000056908)
国家自然科学基金(30400152
30300138
30300345)
