Selection of Reliable Reference Genes for Normalization of Quantitative RT-PCR from Different Developmental Stages and Tissues in Amphioxus

Overview

Journal Sci Rep

Specialty Science

Date 2016 Nov 22

PMID 27869224

Citations 15

Authors

Qi-Lin Zhang

Qian-Hua Zhu

Xin Liao

Xiu-Qiang Wang

Tao Chen

Han-Ting Xu

Juan Wang

Ming-Long Yuan

Jun-Yuan Chen

Affiliations

Soon will be listed here.

Abstract

Amphioxus is a closest living proxy to the ancestor of cephalochordates with vertebrates, and key animal for novel understanding in the evolutionary origin of vertebrate body plan, genome, tissues and immune system. Reliable analyses using quantitative real-time PCR (qRT-PCR) for answering these scientific questions is heavily dependent on reliable reference genes (RGs). In this study, we evaluated stability of thirteen candidate RGs in qRT-PCR for different developmental stages and tissues of amphioxus by four independent (geNorm, NormFinder, BestKeeper and deltaCt) and one comparative algorithms (RefFinder). The results showed that the top two stable RGs were the following: (1) S20 and 18 S in thirteen developmental stages, (2) EF1A and ACT in seven normal tissues, (3) S20 and L13 in both intestine and hepatic caecum challenged with lipopolysaccharide (LPS), and (4) S20 and EF1A in gill challenged with LPS. The expression profiles of two target genes (EYA and HHEX) in thirteen developmental stages were used to confirm the reliability of chosen RGs. This study identified optimal RGs that can be used to accurately measure gene expression under these conditions, which will benefit evolutionary and functional genomics studies in amphioxus.

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