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Position: Home > Articles > The cDNA Cloning and Sequencing Analysis of Mongolia Sheep Ghrelin Chinese Journal of Animal and Veterinary Sciences 2006,37 (8) 735-739

蒙古绵羊ghrelin cDNA的克隆及序列分析

作  者:
吕东媛;曹贵方;白春玲;旭日干
单  位:
内蒙古大学实验动物中心;内蒙古农业大学动物胚胎与发育生物学研究室
关键词:
蒙古绵羊;ghrelin;cDNA;克隆;序列分析
摘  要:
根据GenBank中报道的绵羊ghrelin序列设计一对特异性引物,以蒙古绵羊真胃组织中提取的总RNA为模板,采用RT-PCR技术扩增出蒙古绵羊ghrelin的cDNA,并克隆到pTZ19载体中,经限制性内切酶谱和DNA序列测定,证实所克隆的蒙古绵羊ghrelin的cDNA为ghrelin的部分序列,因为用NCBI网站上的BLAST功能将测序结果同已发表绵羊ghrelin序列进行对比,205个碱基中仅有1个碱基的差异,该差异不影响翻译后多肽的序列。该段cDNA包含由168个碱基组成的开放读码框(ORF),该ORF编码56个氨基酸残基的前原蒙古绵羊ghrelin。对蒙古绵羊ghrelin的研究将有助于进一步揭示其生理和病理功能,对反刍动物多种疾病过程的认识及防治策略具有深远意义。
译  名:
The cDNA Cloning and Sequencing Analysis of Mongolia Sheep Ghrelin
作  者:
L Dong-yuan~1,CAO Gui-fang~(1,2*),BAI Chun-ling~2,XU Ri-gan~2(1.Laboratory of Animal Embryo and Developmental Biology,Inner Mongolia Agricultural University,Huhhot 010018,China;2.Experimental Animal Center,Inner Mongolia University,Huhhot 010021,China)
关键词:
Mongolia sheep;ghrelin;cDNA;clone;sequencing analysis
摘  要:
In order to amplify cDNA of Mongolia sheep ghrelin,the differential primers were designed according to the GenBank sequence.Total RNA was extracted from the abomasums of Mongolia sheep and the cDNA encoding Mongolia sheep ghrelin was obtained by the reverse transcription PCR(RT-PCR).The purified RT-PCR product was cloned into pTZ19 vector.The results of restriction endonuclease pattern analysis of recombinant plasmid and DNA sequencing demonstrated that the Mongolia sheep ghrelin cDNA was part of ghrelin,because blasted sequencing result with published sheep ghrelin in NCBI web,only one base was different in 205 bases.The difference didn't influence polypeptide sequence after translation.The cDNA contained a ORF of 168 bases which encoded a 56 amino acid prepropeptide.The research to Mongolia sheep ghrelin will help us to open out its physiological and pathological function,and it will make far-reaching sense in preventing and curing some ruminant diseases.

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