›› 2013, Vol. 40 ›› Issue (3): 19-22.

• 生物技术 • 上一篇    下一篇

小尾寒羊溶菌酶基因的克隆与差异表达分析

李闯1,2, 徐云明1, 唐峰1,3, 邹德颖1, 刘楠楠1, 郭兴1, 杨咏洁1,4, 周玉1, 柳增善1, 卢士英1, 鲁承2, 任洪林1   

  1. 1. 吉林大学人兽共患病研究所,人兽共患病研究教育部重点实验室,吉林长春 130062;
    2. 延边大学农学院动物医学系,吉林延吉 133002;
    3. 辽宁医学院畜牧兽医学院,辽宁锦州 121001;
    4. 延边大学农学院食品科学系,吉林延吉 133002
  • 收稿日期:2012-09-03 出版日期:2013-03-20 发布日期:2013-03-19
  • 通讯作者: 任洪林(1974-),男,博士,副教授,研究方向:兽医公共卫生和人兽共患病致病机制。Tel:0431-87836716;E-mail:renhl@jlu.edu.cn;鲁承(1961-),男,博士,教授,研究方向:动物传染病。Tel:0433-3264685;E-mail:clu@ybu.edu.cn;卢士英(1973-),女,博士,副教授,研究方向:兽医公共卫生诊断技术。Tel:0431-87836716;E-mail:lushiying1129@163.com E-mail:renhl@jlu.edu.cn;clu@ybu.edu.cn;lushiying1129@163.com
  • 作者简介:李闯(1988-),女,吉林人,硕士生,研究方向:动物传染病学。
  • 基金资助:
    国家自然科学基金项目(30901070)。

Cloning and Differential Expression Analysis of Lysozyme Gene in Small Tail Han Sheep

LI Chuang1,2, XU Yun-ming1, TANG Feng1,3, ZOU De-ying1, LIU Nan-nan1, GUO Xing1, YANG Yong-jie1,4, ZHOU Yu1, LIU Zeng-shan1, LU Shi-ying1, LU Cheng2, REN Hong-lin1   

  1. 1. Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, Jilin University, Changchun 130062, China;
    2. Department of Veterinary Medicine, Agriculture College of Yanbian University, Yanji 133002, China;
    3. College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou 121001, China;
    4. Department of Food Science, Agriculture College of Yanbian University, Yanji 133002, China
  • Received:2012-09-03 Online:2013-03-20 Published:2013-03-19

摘要: 本试验从猪种布鲁氏菌S2疫苗株免疫雄性小尾寒羊构建的白细胞层SSH cDNA文库中筛选1段cDNA序列,经测序和BLAST同源性搜索比对发现其为溶菌酶重组片段,该片段大小为770 bp,编码148个氨基酸残基,编码的蛋白质是一种天然抗感染物质,已提交GenBank,登录号为JX263305。经荧光定量PCR分析,与正常组羊相比,在S2免疫14和30 d的羊白细胞层中该溶菌酶基因表达轻微上调,但差异不显著(P>0.05);在免疫40 d时恢复到正常水平。这也进一步说明溶菌酶是一种存在机体内必不可少的天然免疫因子,为布鲁氏菌病有效防控方面的研究奠定了基础。

关键词: 白细胞层; 布鲁氏菌; 溶菌酶; 差异表达分析; 荧光定量PCR

Abstract: The male Small Tail Han sheep were inoculated with Brucella suis S2 vaccine strain, the suppression subtractive hybridization (SSH) library was constructed from buffy coat of sheep. After the recombinant plasmids were sequenced, the cDNA sequence of the conserved domain of lysozyme (LYZ) was recognized based on BLAST in GenBank, with the size of 770 bp, and continuously encoding 148 amino acid residuals, the encoded protein was a natural anti-infective substances.The sequence had been submitted to GenBank(JX263305).Quantitative Real-time PCR result showed that the LYZ gene was slightly up-regulated in buffy coat at 14 and 30 days post-challenge (dpc) without statistical significance (P>0.05), and then recovered to the normal level at 40 dpc.The lysozyme was further proved as an essential natural immune factor which laid the foundation for the effective prevention and control of brucellosis.

Key words: buffy coat; Brucella suis; lysozyme; differential expression analysis; Real-time PCR

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