Selection of reference genes for qRT-PCR analysis of gene expression in sea cucumber Apostichopus japonicus during aestivation  

作　　者：赵业 陈慕雁 王天明 孙丽娜 徐冬雪 杨红生 

机构地区：[1]Institute of Oceanology,Chinese Academy of Sciences [2]University of Chinese Academy of Sciences [3]Ocean University of China [4]Zhejiang Ocean University

出　　处：《Chinese Journal of Oceanology and Limnology》2014年第6期1248-1256,共9页中国海洋湖沼学报（英文版）

基　　金：Supported by the National Nature Science Foundation of China(Nos.41176139,31201972)

摘　　要：Quantitative real-time reverse transcription-polymerase chain reaction （qRT-PCR） is a technique that is widely used for gene expression analysis, and its accuracy depends on the expression stability of the internal reference genes used as normalization factors. However, many applications of qRT-PCR used housekeeping genes as internal controls without validation. In this study, the expression stability of eight candidate reference genes in three tissues （intestine, respiratory tree, and muscle） of the sea cucumber Apostichopus japonicus was assessed during normal growth and aestivation using the geNorm, NormFinder, delta CT, and RefFinder algorithms. The results indicate that the reference genes exhibited significantly different expression patterns among the three tissues during aestivation. In general, the β-tubulin （TUBB） gene was relatively stable in the intestine and respiratory tree tissues. The optimal reference gene combination for intestine was 40S ribosomal protein S18 （RPSI 8）, TUBB, and NADH dehydrogenase （NADH）; for respiratory tree, it was β-actin （ACTB）, TUBB, and succinate dehydrogenase cytochrome B small subunit （SDHC）; and for muscle it was α-tubulin （TUBA） and NADH dehydrogenase [ubiquinone] 1α subcomplex subunit 13 （NDUFA13）. These combinations of internal control genes should be considered for use in further studies of gene expression in A.japonicus during aestivation.Quantitative real-time reverse transcription-polymerase chain reaction(qRT-PCR) is a technique that is widely used for gene expression analysis,and its accuracy depends on the expression stability of the internal reference genes used as normalization factors.However,many applications of qRT-PCR used housekeeping genes as internal controls without validation.In this study,the expression stability of eight candidate reference genes in three tissues(intestine,respiratory tree,and muscle) of the sea cucumber Apostichopus japonicus was assessed during normal growth and aestivation using the geNorm,NormFinder,delta CT,and RefFinder algorithms.The results indicate that the reference genes exhibited significantly different expression patterns among the three tissues during aestivation.In general,the P-tubulin(TUBB) gene was relatively stable in the intestine and respiratory tree tissues.The optimal reference gene combination for intestine was 40 S ribosomal protein S18(RPS18),TUBB,and NADH dehydrogenase(NADH);for respiratory tree,it was P-actin(ACTB),TUBB,and succinate dehydrogenase cytochrome B small subunit(SDHC);and for muscle it was a-tubulin(TUBA) and NADH dehydrogenase[ubiquinone]1 a subcomplex subunit 13(NDUFA13).These combinations of internal control genes should be considered for use in further studies of gene expression in A.japonicus during aestivation.

关 键 词：Apostichopus japonicus sea cucumber AESTIVATION quantitative real-time RT-PCR reference gene normalization factor 

分 类 号：S917.4[农业科学—水产科学] Q78[生物学—分子生物学]