›› 2009, Vol. 36 ›› Issue (11): 51-56.

• 生物技术 • 上一篇    下一篇

长毛兔和獭兔白细胞介素-4基因的序列分析与真核表达

廖艳1,杨光友1,赖松家2,喻惠玲3,郑晶1,古小彬1,牟静1,安晓雪1   

  1. (1.四川农业大学动物医学院, 雅安 625014; 2.四川农业大学动物科技学院, 雅安 625014;3.蒲江县农村发展局, 蒲江 611630)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-11-20 发布日期:2009-11-20
  • 通讯作者: 杨光友

Sequence Analysis and Eukaryotic Expression of Oryctolagus cuniculus (Breed Angola and Breed Rex) Interleukin-4(IL-4) Gene

LIAO Yan1, YANG Guang-you1, LAI Song-jia2, YU Hui-ling3, ZHENG Jing1, GU Xiao-bin1, MU Jing1, AN Xiao-xue1   

  1. (1.College of Veterinary Medicine, Sichuan Agricultural University, Ya’an 625014, China;2.College of Animal Science and Technology, Sichuan Agricultural University, Ya’an 625014, China;3.Countryside Development Bureau of Pujiang, Pujiang 611630, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-11-20 Published:2009-11-20
  • Contact: YANG Guang-you

摘要: 应用反转录—聚合酶链式反应(RT-PCR)技术,在国内首次从ConA诱导培养的长毛兔和獭兔外周血淋巴细胞总RNA中扩增出IL-4基因。将扩增基因克隆入pMD18-T载体,经序列测定分析表明,长毛兔和獭兔IL-4基因全长均为441 bp,两序列间碱基组成无差异(登录号:EF606761和EU639687)。长毛兔和獭兔IL-4基因编码147个氨基酸,其中前24个氨基酸组成信号肽,余下的123个氨基酸组成成熟肽。与已报道的犬、猫、人、猪、牛、羊、马、大熊猫和鼠的IL-4核苷酸同源性分别为61.8%、63.4%、69.8%、65.1%、64.1%、64.1%、63.1%、57.0%、60.5%,推导的氨基酸同源性分别为47.2%、50.0%、53.6%、52.1%、48.3%、46.9%、52.1%、43.7%、43.0%。将测序正确的阳性质粒采用脂质体法转染COS-7,用RT-PCR鉴定转染细胞中IL-4基因的表达,并通过MTT法检测到表达的IL-4蛋白具有一定的生物学活性。

关键词: 长毛兔; 獭兔; 克隆; 真核表达; 白细胞介素-4

Abstract: Rabbit interleukin-4 cDNA from lymphocyte was synthesized by reverse transcription polymerase chain reaction (RT-PCR) from mRNA extracted from blood lymphocytes of Angola and Rex rabbit, which were stimulated by 10 μg/mL Con A in vitro. The interleukin-4 cDNA was cloned into pMD18-T vector for sequence. The full cDNA length of the IL-4 gene was 441 bp in Angola and Rex rabbits. The IL-4 encoded a peptide of 147 amino acids, containing signal peptide composed of 24 amino acids and mature interleukin-4 gene composed of 123 amino acids. The Angola and Rex rabbits had 61.8%, 63.4%, 69.8%, 65.1%, 64.1%, 64.1%, 63.1%, 57.0% and 60.5% identity with the IL-4 genes of dog, cat, human, pig, cow, horse, goat, panda and rat, respectively. The deduced amino acid had 47.2%, 50.0%, 53.6%, 52.1%, 48.3%, 46.9%, 52.1%, 43.7% and 43.0% identity with the expressed IL-4 of dog, cat, human, pig, cow, goat, horse, panda and rat, respectively. The recombinant plasmid was transfected by lipofectin to COS-7. Expression of IL-4 gene was detected by RT-PCR. The transient expression product has some biological activities analyzed by MTT.

Key words: Angola rabbit; Rex rabbit; cloning; eukaryotic expression; interleukin-4

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