实验动物科学 ›› 2017, Vol. 34 ›› Issue (02): 16-20.

• 研究 论著 • 上一篇    下一篇

去除信号肽有利鸡白细胞介素-10 在哺乳动物细胞胞浆的表达

  

  1.  (1. 中国农业科学院哈尔滨兽医研究所实验动物与比较医学团队/兽医生物技术国家重点实验室,哈尔滨 150001) ( 2. 山西农业大学动物科技学院,太谷 030801)
  • 出版日期:2017-04-29 发布日期:2017-07-05
  • 基金资助:

    <p>国家科技支撑计划项目( No. 2015BAI07B02 - 02)</p>

Removing Signal Peptide Accumulate Chicken Interleukin-10 in the Cytoplasm of Mammal Animal Cell Line

  • Online:2017-04-29 Published:2017-07-05

摘要: 摘要: 目的 分析鸡白细胞介素 10( chicken interleukin-10,chIL-10) 的信号肽对体外表达的影响,以获得稳定表达 chIL-10 的细胞系。方法 采用 RT-PCR 方法从经脂多糖( LPS) 体外刺激的鸡外周血淋巴细胞中分别扩增含信号肽( euchIL-10F) 和去信号肽( euchIL-10M) 的 chIL-10 编码基因,克隆入含有报告基因 eGFP 和新霉素抗性基因 ( neo) 的真核表达载体 pEGFP-N1 中,获得重组质粒 N1-euchIL-10F 和 N1-euchIL-10M。分别转染中国仓鼠卵巢细胞系( CHO-K1) ,经 G418 加压筛选、纯化,获得稳定表达 chIL-10 蛋白的 CHO-K1 细胞系,利用激光共聚焦试验观察外源蛋白的细胞定位。结果 通过 RT-PCR、间接免疫荧光试验和免疫印迹试验,表明 euchIL-10F 和 euchIL-10M 均整合入细胞基因组中,且 N1-euchIL-10M 在胞浆大量表达较强的绿色荧光,而 N1-euchIL-10F 表达的荧光较弱,且胞浆内含量很低。结论 去除信号肽利于 chIL-10 基因在体外真核细胞胞浆的表达。

关键词: <, p>, 鸡白细胞介素-10, 信号肽, 真核表达, CHO-K1 细胞<, /p>

Abstract: Abstract: Objective To analyze the effect of signal peptide of chicken interleukin-10 ( chIL-10) on expressing in CHO-K1 cell line,and to establish a stable chIL-10 expressing cell line. Method Whole chIL-10F and signal peptide-deleting genetic fragment of chIL-10 were amplified with two pairs of primers and inserted into pEGFP-N1 vector. The obtained recombinant plasmids of N1-chIL-10F and N1-chIL-10M were transfected into CHO-K1 cells under G418 screening. Result Two stable cell lines of CHO-chIL-10F and CHO-chIL-10M were obtained, respectively,confirmed by RT-PCR and western blot assays. Confocal examination showed that the reporter protein GFP was expressed in the cytoplasm of CHO-chIL-10M and stronger than in the CHO-chIL-10F. Conclusion Removing signal peptide of chIL-10 improves expression of chIL-10 in the cytoplasm in vitro.

Key words: <p>Chicken interleukin-10, Signal peptide, Eukaryotic vector, CHO-KI cells</p>

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