人类内皮活化相关新基因EOLA1的发现及初步研究

CLONING OF A NOVEL HUMAN GENE EOLA1

为克隆一个在人脐静脉内皮细胞受脂多糖刺激后表达新序列标签ST5 5 (GenBank接受号BI12 16 4 6 )对应基因全长cDNA序列 ,作者在已知ST5 5序列基础上 ,采用快速扩增cDNA末端(RACE)技术延伸ST5 5的 3′和 5′末端以获取其全长cDNA序列 ,并经Northern印迹杂交验证 ,再对序列进行生物信息学分析 ,获得一个新的人类基因 ,命名为内皮细胞高表达脂多糖相关因子 1(EOLA1) (GenBank接受号AY0 74 889) ,该基因定位于人染色体Xq2 7.3,推导编码蛋白EOLA1包含 15 8个氨基酸 ,预测EOLA1是与内皮细胞活化相关的新基因 。

To clone the full length cDNA sequence of a novel expression sequence tag ST55 (GenBank Accession No. BI121646) from human umbilical vein endothelial cells stimulated by lipopolysaccharide, rapid amplification of cDNA ends (RACE) was used to extend the 3′and 5′ends of ST55 to obtain the full length cDNA sequence according to the known ST55 sequence. The cDNA was identified by Northern blot and analyzed with bioinformatics. A novel human full length cDNA was cloned and named endothelial overexpressed lipopolysaccharide associated factor 1( EOLA1 ) (GenBank Accession No. AY074889). This gene was located at chromosomal Xq27.3 and encodes a protein EOLA1 composed of 158 amino acids. Our data show that EOLA1 is a novel human gene associated with activated endothelial cells, and may play a role in intercellular signal transduction.