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Position: Home > Articles > Cloning and sequence analyzing of interleukin-2 and interleukin-4 cDMA from the lymphocyte of Rongchang Pig Heilongjiang Animal Science and Veterinary Medicine 2007 (1) 10-12

荣昌猪白细胞介素-2和白细胞介素-4基因的克隆与序列分析

作  者:
张芳;郭万柱;吴华
单  位:
四川农业大学动物生物技术中心
关键词:
荣昌猪;IL-2;IL-4;克隆
摘  要:
将荣昌猪外周血淋巴细胞在刀豆素A(ConA)的刺激下培养24~70 h后,提取总RNA,应用RT-PCR技术扩增白细胞介素-2(IL-2)和白细胞介素-4(IL-4)cDNA,克隆到pMD18-T载体并测序。结果表明:克隆的IL-2 cDNA全长为522个碱基,ORF为465个碱基,编码154个氨基酸,与GenBank公布的猪IL-2比对同源性均为99.8%;克隆的IL-4 cDNA全长411个碱基,ORF为402个碱基,编码133个氨基酸,与GenBank公布的猪IL-4比对同源性均在98.0%以上,从而证实成功克隆了荣昌猪IL-2和IL-4基因cDNA。
译  名:
Cloning and sequence analyzing of interleukin-2 and interleukin-4 cDMA from the lymphocyte of Rongchang Pig
作  者:
ZHANG Fang,GUO Wan-Zhu~*,WU Hua(The center of animal biotechnology,Sichuan Agriculture Univerisity,Ya'an 625014,China)
关键词:
Rongchang Pig;Interleukin-2;Interleukin-4;cloning
摘  要:
The interleukin-2 and interleukin-4 cDNA of Rongchang Pig were amplified by RT-PCR from total RNA extracted from blood lymphocytes,which were cultivated and stimulated with 7 μg/mL ConA in vitro for 24~72 hours.The amplified cDNA was cloned into PMD18-T vector.The nucletide acid sequences of cloned Rongchang Pig interleukin-2 and interleukin-4 cDNA were determined.The length of the IL-2 was 522 bp,encoding 154 amino acids;however,the length of the IL-4 was 411 bp,encoding 133 amino acids.By blasting the homologous sequences in GenBank databases,the sequence of Rongchang pig interleukin-2 gene from lymphocyte is 99.8% percent identity to the interleukin-2 genes previously cloned from other porcines;however,the sequence of Rongchang pig interleukin-4 gene is more than 98.0%.

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