畜牧兽医学报 ›› 2015, Vol. 46 ›› Issue (7): 1215-1223.doi: 10.11843/j.issn.0366-6964.2015.07.019

• 预防兽医 • 上一篇    下一篇

细粒棘球蚴原头蚴包囊和原头蚴成虫抑制差减杂交文库中差异表达基因的筛选及分析

赵莉1#,石保新1#,李军3,张壮志1,马正海2,张旭1,薛晶1,金映红1,张文宝3*   

  1. (1.新疆畜牧科学院兽医研究所,乌鲁木齐 830000;2.新疆大学生命科学与技术学院重点实验室,乌鲁木齐 830046;3.新疆医科大学第一附属医院医学研究中心,新疆包虫病基础医学重点实验室,乌鲁木齐 830054)
  • 收稿日期:2014-09-26 出版日期:2015-07-23 发布日期:2015-07-23
  • 通讯作者: 张文宝,研究员,E-mail:wenbaozhang2013@163.com
  • 作者简介:赵莉(1982-),女,江苏宿迁人,硕士,助理研究员,主要从事生物化学与分子生物学研究,E-mail:82285053@qq.com;石保新(1963-),男,河北馆陶人,研究员,E-mail:2423930978@qq.com。石保新与赵莉为同等贡献的第一作者
  • 基金资助:

    公益性行业(农业)科研专项项目(201103008)

The Screening and Analysis of Differentially Expressed Genes in Suppression Subtractive Hybridization Library with either Cyst (CW) or Adult Worm (AM) Development from Echinococcus granulosus Larval Protoscolex (PSC)

ZHAO Li1# ,SHI Bao-xin1# ,LI Jun3,ZHANG Zhuang-zhi1,MA Zheng-hai2,ZHANG Xu1,XUE Jing1,JIN Ying-hong1,ZHANG Wen-bao3*   

  1. (1.Veterinary Research Institute of Animal Science Academy of Xinjiang Uygur Autonomous Region,Urumqi 830000,China;2.Xinjiang Key Laboratory of Biological Resources and Genetic Engineering,College of Life Science and Technology,Xinjiang University,Urumqi 830046,China;3.Xinjiang Hydatid Fundamental Medical Key Lab,First Teaching Hospital of Xinjiang Medical University,Urumqi 830054,China)
  • Received:2014-09-26 Online:2015-07-23 Published:2015-07-23

摘要:

细粒棘球绦虫原头蚴(PSC)具有双向发育的特点,本文旨在利用SSH和生物信息学方法筛选原头蚴包囊(CW)和成虫(AW)特异性的基因。将PSC-CW和PSC-AW双相发育差减cDNA文库的差减PCR产物克隆入pGEM-T载体并测序,利用CAP3 sequence assembly在线软件、Blast2GO软件与GenBank数据库对测序结果进行分析,筛选原头蚴成囊和成虫特异性的基因,并探讨这些基因的功能。结果显示:对PSC-CW和PSC-AW文库进行扩增,分别得到280和200个阳性克隆,菌落PCR鉴定结果表明,这些克隆均插入200~1 000 bp片段。测序结果显示从PSC-CW和PSC-AW SSH文库中分别得到16和10个特异性基因。其中PSC-CW SSH文库中得到4个出现频率较高的基因,其余12个基因仅出现1次,其中5个为未知基因,已知基因分别编码细胞色素C氧化酶Ⅰ、热休克蛋白70和铁蛋白等功能蛋白质。PSC-AW SSH文库中得到10个基因,其中2个出现频率较高基因,8个基因仅出现1次,4个为未知基因,6个已知基因分别编码基质蛋白1、延伸因子1α和脂肪酸结合蛋白等功能蛋白质。本研究筛选获得原头蚴成囊和成虫发育时差异表达的基因,对这些基因的功能进行分析表明,PSC-CW SSH文库中多是与营养和能量转运功能的相关基因,而PSC-AW SSH文库中多为发育与分化相关的基因,这些基因的差异表达可能与原头蚴处于不同的生长环境和发育方向有关,同时也为棘球蚴病免疫诊断、药物筛选和疫苗研制提供候选基因。

Abstract:

According to the bidirectional development of the protoscolex (PSC) of Echinococcus granulosus,the study was conducted to screen the specifical genes of E.granulosus PSC development between a larval cyst and adult worm.The subtractive PCR products of the SSH library of E.granulosus PSC-adult (AW) and E.granulosus PSC-cyst (CW) were connected to the pGEM-T easy vector,and were cloned and sequenced.Totally,280 and 200 clones were obtained from PSC-CW and PSC-AM libraries,respectively,with the length of fragments 200 to 1000 bp.The clones were sequenced.Sequence alignment analysis showed that these sequences belong to 16 and 10 gene clusters representing 16 and 10 unique genes from PSC-CM and PSC-AW libraries respectively.As the genes are specifically or differentially expressed during the development of PSC to either adult worm or cyst,they are important for the parasite development and differentiation,thus can be candidates for drug and vaccine development.

中图分类号: