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Systematic selection of suitable reference genes for quantitative real-time PCR normalization studies of gene
Lujun Chen1, Qiulu Liang1, Zhuoxin Lai1
1Key Laboratory of Aquaculture in South China Sea for Aquatic Economic Animal of Guangdong Higher Education Institutes, Fisheries College, Guangdong Ocean University, Zhanjiang, 524025, China.
Abstract:
Quantitative real-time PCR (qRT-PCR) has been widely employed for the study of gene expression in fish, and accurate normalization is crucial. In this study, we aimed to identify the most stably expressed genes in various tissues, different developmental stages, and within astaxanthin treatment groups in Lutjanus erythropterus. Twelve candidate genes (EEF1A, CYB5R3, DLD, IDH3A, MRPL17, MRPL43, NDUFS7, PABPC1, PAGR1, PFDN2, PSMC3, and RAB10) were examined via qRT-PCR. We employed geNorm and NormFinder to assess their stability. The results revealed that RAB10 and PFDN2 exhibited relatively stable expression patterns across different tissue and astaxanthin treatment groups, while NDUFS7 and MRPL17 proved to be the most reliable reference gene combinations across various developmental stages. The stability of these selected genes was further validated by assessing the expression of two target genes, CRADD and CAPNS1, across developmental stages, reinforcing the reliability of NDUFS7 as it closely aligned with transcriptome-wide expression patterns at these stages. The present results will help researchers to obtain more accurate results in future qRT-PCR analysis in L. erythropterus.
