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Genome-wide identification of suitable zebrafish Danio rerio reference genes for normalization of gene expression data by RT-qPCR

文献类型: 外文期刊

作者: Xu, H. 1 ; Li, C. 2 ; Zeng, Q. 2 ; Agrawal, I. 2 ; Zhu, X. 1 ; Gong, Z. 2 ;

作者机构: 1.Chinese Acad Fishery Sci, Pearl River Fisheries Res Inst, Guangzhou 510380, Guangdong, Peoples R China

2.Natl Univ Singapore, Dept Biol Sci, Singapore 117543, Singapore

关键词: fish;gene expression;housekeeping genes;transcriptomes

期刊名称:JOURNAL OF FISH BIOLOGY ( 影响因子:2.051; 五年影响因子:2.25 )

ISSN:

年卷期:

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收录情况: SCI

摘要: In this study, to systematically identify the most stably expressed genes for internal reference in zebrafish Danio rerio investigations, 37 D. rerio transcriptomic datasets (both RNA sequencing and microarray data) were collected from gene expression omnibus (GEO) database and unpublished data, and gene expression variations were analysed under three experimental conditions: tissue types, developmental stages and chemical treatments. Forty-four putative candidate genes were identified with the c.v. <0.2 from all datasets. Following clustering into different functional groups, 21 genes, in addition to four conventional housekeeping genes (eef1a1l1, b2m, hrpt1l and actb1), were selected from different functional groups for further quantitative real-time (qrt-)PCR validation using 25 RNA samples from different adult tissues, developmental stages and chemical treatments. The qrt-PCR data were then analysed using the statistical algorithm refFinder for gene expression stability. Several new candidate genes showed better expression stability than the conventional housekeeping genes in all three categories. It was found that sep15 and metap1 were the top two stable genes for tissue types, ube2a and tmem50a the top two for different developmental stages, and rpl13a and rp1p0 the top two for chemical treatments. Thus, based on the extensive transcriptomic analyses and qrt-PCR validation, these new reference genes are recommended for normalization of D. rerio qrt-PCR data respectively for the three different experimental conditions. (C) 2016 The Fisheries Society of the British Isles

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