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藏猪Ⅱ型肺泡上皮细胞新转录本及其功能解析

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利用已获得的藏猪(Tibetan pig)Ⅱ型肺泡上皮细胞(type Ⅱ alveolar epithelial cells,AT Ⅱ)的RNA-seq数据完善已注释的猪(Sus scrofa)基因组信息,鉴定并分析新转录本的功能.基于已发表的藏猪和长白猪(Landrace pig)AT Ⅱ的长读段测序数据,使用Stringtie重构转录本并鉴定新转录本.共对4 245个转录本的非翻译区(non-translational region,UTR)进行了延长,其中5'UTR和3'UTR延伸的转录本分别有1 646个和3 263个,5'和3'端共延伸的转录本有648个.发掘出54个新转录本,其经过滤后的平均长度为4 047 bp,且在NC_010448.4染色体上的分布最多.GO富集分析结果表明,藏猪AT Ⅱ的常氧(21%O2)组和低氧(2%O2)组的14个差异新转录本显著富集于细胞器膜、限制性脱氧核糖核酸内切酶活性和转座;KEGG分析结果表明,动物细胞因子-细胞因子受体交互作用、淀粉和蔗糖代谢以及丝裂原活化蛋白激酶(mitogen-activated protein kinase,MAPK)信号通路有大量差异新转录本显著富集.藏猪AT Ⅱ的新转录本可能通过淀粉和蔗糖代谢以及MAPK信号通路与已注释基因共同参与ATⅡ的低氧应答反应.研究结果较好地完善了现有的猪基因组注释,并为相关组学和分子生物学研究的深入开展提供了基础.
Novel Transcripts and Their Functional Analysis of Type Ⅱ Alveolar Epithelial Cells in Tibetan Pigs
The annotated Sus scrofa genome information and the new transcript were refined and identified using RNA-seq data,which obtained from type Ⅱ alveolar epithelial cells(AT Ⅱ)of Tibetan pig.Stringtie was used to reconstruct transcripts and identify novel genes based on published AT Ⅱ long-read sequencing data of Tibetan and Landrace pigs.4 245 transcripts had their non-translational regions(UTR)lengthened,comprising 1 646 genes with 5'UTR and 3 263 transcripts with 3'UTR,as well as 648 transcripts with 5'and 3'ends,respectively.The majority of 54 novel transcripts were found on the NC 010448.4 chromosome and had an average fil-tered length of 4 047 bp.GO enrichment analysis results showed that 14 novel transcripts of AT Ⅱ among normoxic(21%O2)and hy-poxic(2%O2)groups of Tibetan pigs were significantly enriched in organelle membrane,restriction of deoxyribonuclease activity and transposition.Numerous divergent novel transcripts were considerably enriched in animal cytokine-cytokine receptor interactions,starch and sucrose metabolism,and mitogen-activated protein kinase(MAPK)signaling pathways by KEGG analysis.Novel transcripts and annotated genes may be involved in the hypoxia response of AT Ⅱ of Tibetan pigs through the starch and sucrose metabolism and MAPK signaling pathway.The results of this research enhance the current annotation of the pig genome and provide a foundation for the ad-vancement of omics and molecular biology in this area.

Type Ⅱ alveolar epithelial cellsTibetan pigNovel transcript

柳烜博、杨雅楠、袁浩楠、柳思奇、王正文、赵生国

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甘肃农业大学动物科学技术学院,兰州,730070

Ⅱ型肺泡上皮细胞 藏猪 新转录本

国家自然科学基金地区科学基金甘肃农业大学青年导师基金

32060730GAU-QDFC-2018-03

2024

基因组学与应用生物学
广西大学

基因组学与应用生物学

CSTPCD北大核心
影响因子:1.108
ISSN:1674-568X
年,卷(期):2024.43(4)
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