浙江农业学报 ›› 2021, Vol. 33 ›› Issue (2): 223-229.DOI: 10.3969/j.issn.1004-1524.2021.02.05

• 动物科学 • 上一篇    下一篇

猪长链非编码RNA lnc-000649在PRRSV感染增殖中的作用

吴俊静(), 乔木, 周佳伟, 梅书棋, 彭先文*()   

  1. 动物胚胎工程及分子育种湖北省重点实验室,湖北省农业科学院 畜牧兽医研究所,湖北 武汉 430064
  • 收稿日期:2020-05-20 出版日期:2021-02-25 发布日期:2021-02-25
  • 通讯作者: 彭先文
  • 作者简介:彭先文,E-mail: pxwpal@163.com
    吴俊静(1984—),女,湖北武汉人,博士,副研究员,主要从事猪遗传育种研究。E-mail: jeanne1106@126.com
  • 基金资助:
    湖北省重大科技创新项目(2019ABA084);湖北省重大科技创新项目(2017ABA134);湖北省创新群体项目(2018CFA014);湖北省农业科技创新中心创新团队项目(2019-620-000-001-18);国家生猪产业技术体系项目(CARS-36)

Function of porcine non-coding RNA lnc-000649 during PRRSV infection

WU Junjing(), QIAO Mu, ZHOU Jiawei, MEI Shuqi, PENG Xianwen*()   

  1. Hubei Key Laboratory of Animal Embryo and Molecular Breeding, Institute of Animal Science and Veterinary Medicine, Hubei Academy of Agricultural Science, Wuhan 430064, China
  • Received:2020-05-20 Online:2021-02-25 Published:2021-02-25
  • Contact: PENG Xianwen

摘要:

长链非编码RNA(lncRNA)在免疫及病毒与宿主互作中发挥重要作用。本研究在猪PAM细胞中发现一种新的猪长链非编码RNA lnc-000649,其全序列长1 483 bp。利用荧光定量PCR技术检测了猪繁殖与呼吸综合征病毒(PRRSV)感染前后PAM细胞中lnc-000649的表达水平,发现其在PRRSV感染后表达显著(P<0.01)下调。为了进一步研究该lncRNA的功能,构建了猪lnc-000649超表达载体lnc-000649-pcDNA3.1,并转染PAM细胞,成功构建了lnc-000649超表达细胞模型。经PRRSV接种后发现,转染lnc-000649-pcDNA3.1组的PAM细胞内PRRSV RNA含量极显著(P<0.01)低于转染pcDNA3.1(+)空载体和未转染组,说明猪lnc-000649对PRRSV增殖具有抑制作用,但是其具体作用机制还有待进一步研究。

关键词: 猪, 长链非编码RNA, 猪繁殖与呼吸综合征病毒, 超表达载体

Abstract:

Long noncoding RNA (lncRNA) plays a role in immunity and the host response to viral infection. In this study, a novel porcine lncRNA lnc-000649, with a total length of 1 483 bp, was found in porcine alveolar macrophage (PAM) cells. The expression level of lnc-000649 in PAM cells before and after PRRSV infection was detected by quantitative PCR, and it was found that the expression of lnc-000649 was significantly (P<0.01) down-regulated after PRRSV infection. In order to further study the function of this lncRNA, lnc-000649 overexpression vector lnc-000649-pcDNA3.1 was constructed and transfected into PAM cells. After PRRSV inoculation, the results showed that PRRSV RNA level in PAM cells which transfected with lnc-000649-pcdna3.1 was significantly (P<0.01) lower than that in transfected pcDNA3.1(+) and non-transfected group. It indicated that lnc-000649 could inhibit the proliferation of PRRSV. However, its specific mechanism remains to be further studied.

Key words: porcine, lncRNA, PRRSV, overexpression vector

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