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ZBED6基因对巴马香猪脾发育的作用机制分析

文献类型: 中文期刊

作者: 王圣楠 1 ; 王丹丹 1 ; 田文杰 1 ; 浦亚斌 1 ; 潘登科 1 ; 邢向阳 2 ; 马月辉 1 ; 蒋琳 1 ;

作者机构: 1.中国农业科学院北京畜牧兽医研究所

2.成都中科奥格生物科技有限公司

关键词: ZBED6;CRISPR/Cas9;转录组分析;生长发育;脾

期刊名称: 畜牧兽医学报

ISSN:

年卷期: 2021 年 009 期

页码: 2394-2405

收录情况: 北大核心 ; CSCD

摘要: ZBED6基因作为一个转录因子,能够与IGF2结合进而调节肌肉的生长发育。但其在脾生长发育中的作用尚不清楚,本研究利用RNA-seq测序技术比较ZBED6基因敲除巴马香猪(ZBED6-KO)和同日龄野生型巴马香猪(WT)的脾组织转录组,探究ZBED6基因对巴马香猪脾组织的发育影响。利用t检验对ZBED6-KO猪和WT猪脾组织大小的表型差异及ZBED6直接调控的靶基因IGF2的表达量进行显著性分析。提取ZBED6-KO猪和WT猪脾组织的总RNA,在Illumina Hiseq 2500平台进行RNA-seq分析。以猪Sus scrofa11.1为参考基因组,用转录组分析的标准流程筛选ZBED6-KO猪和WT猪脾组织中的差异表达基因。用DAVID在线网站对差异表达基因进行GO和KEGG富集分析。然后,随机选取7个差异表达的基因,利用实时荧光定量PCR技术验证测序结果的准确性与可靠性。结果显示,与WT猪相比,ZBED6-KO猪脾的重量和IGF2基因表达量均显著增加(P<0.05),表明ZBED6基因的敲除对巴马香猪脾组织的生长发育有一定的促进作用。测序结果显示,各样本至少获得4G的数据量,每个样本的Clean Ratio及Q30比率均在90%以上,83.94%以上的reads可比对在猪的参考基因组上,表明测序数据质量良好,真实可靠;对测序数据进行转录组分析,共筛选到161个差异表达基因,其中上调基因90个,下调基因71个;差异表达基因的层次聚类分析显示,ZBED6-KO猪的3个个体(spleen1、spleen3、spleen6)的表达模式相似,WT的3个个体(spleen2、spleen4、spleen5)的表达模式相似,进一步证明测序数据的准确可靠;GO和KEGG富集分析中,富集到10条显著的GO条目以及5条显著的信号通路,2条与肌肉发育相关的通路;实时荧光定量PCR试验随机检测7个差异表达基因的表达模式与RNA-seq分析结果相一致,证实了测序数据的可靠性。以巴马香猪为模型,利用RNA-seq技术研究ZBED6基因的敲除对中国地方猪脾发育的作用影响,为挖掘ZBED6基因的更多功能提供了基础。

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