›› 2009, Vol. 52 ›› Issue (3): 246-253.

• 研究论文 • 上一篇    下一篇

家蚕hsp20.4启动子克隆及其驱动表达产物EGT对家蚕蛹体发育的影响

谢敏, 贡成良, 薛仁宇, 盛洁, 张晓荣, 李艳梅, 虞晓华, 曹广力   

  • 出版日期:2009-04-14 发布日期:2009-03-20
  • 通讯作者: 贡成良,曹广力

Cloning of silkworm hsp20.4 promoter and effects of EGT expression driven by the promoter on pupal development in the silkworm, Bombyx mori

  • Online:2009-04-14 Published:2009-03-20

摘要: 为验证家蚕Bombyx mori热休克蛋白基因hsp20.4启动子的活性以及家蚕核多角体病毒egt的表达产物对家蚕发育的影响, 本实验通过PCR扩增分别得到hsp20.4启动子片段和egt片段。利用hsp20.4的启动子和红色荧光蛋白报告基因DsRed构建重组载体, 在家蚕BmN细胞以及家蚕组织中得到了瞬时表达, 表明所克隆的hsp20.4启动子序列具有热休克蛋白基因的启动子活性。又利用hsp20.4启动子和家蚕核多角体病毒的egt构建重组载体, 通过注射到蚕蛹中进行瞬时表达, 以检测egt表达产物对家蚕发育的影响, 经42℃ 1 h热诱导后, hsp20.4启动子控制的egt表达产物可以延迟家蚕发育。

关键词: 家蚕, hsp20.4启动子, 家蚕核多角体病毒, egt, 发育

Abstract: In order to verify the activity of the heat shock protein gene expression driven by the promoter of Bombyx mori hsp20.4 gene and the effect of Bombyx mori nuclearpolyhedrosisvirus (BmNPV) egt gene products on the development of silkworm, we amplified hsp20.4 promoter and egt fragments by PCR, and then recombined hsp20.4 promoter with red fluorescent protein gene DsRed and BmNPV egt respectively to form two different recombinant vectors. The former transferred into silkworm BmN cells and tissues showed the transient expression of DsRed, indicating the hsp20.4 promoter sequence possess heat shock protein gene promoter activity in silkworm, while the latter injected into silkworm pupa could delay the pupal development of silkworm by heat induction.

Key words: Bombyx mori, hsp20.4 promoter, Bombyx mori nuclearpolyhedrosisvirus, egt, development