文献类型：期刊文献

英文题名：Deep transcriptome profiling sheds light on key players in nucleus implantation induced immune response in the pearl oyster Pinctada martensii

作者：Wang, Wei[1];Wu, Yuyuan[1];Lei, Qiannan[1];Liang, Haiying[1];Deng, Yuewen[1]

机构：[1]Guangdong Ocean Univ, Fisheries Coll, Zhanjiang, Guangdong, Peoples R China

年份：2017

卷号：69

起止页码：67

外文期刊名：FISH & SHELLFISH IMMUNOLOGY

收录：SCI-EXPANDED(收录号：WOS:000412960200009)、、Scopus(收录号：2-s2.0-85027515218)、WOS

基金：The current study was funded by the National Natural Science Foundation of China (Grant No. 31472306), Special Fund for Harbor Construction and Fishery Industry Development of Guangdong Province (Grant No. A201608B15), a Start-up Fund from Guangdong Ocean University to WW, and Special Fund for Outstanding Young Scholars of Fisheries College. We are indebted to two anonymous reviewers for their constructive comments on an earlier version of this manuscript.

语种：英文

外文关键词：Pearl oyster; Pinctada martensii; Nucleus implantation; Allograft; Transcriptome

外文摘要：Immunological rejection of the pearl oysters following nucleus implantation is a major issue limiting the successful rate of cultured pearls. To date, the molecular mechanism of immune tolerance during pearl formation in the pearl oysters is still largely unknown. Through the RNA sequencing platform and comparative transcriptomic analysis, we investigated the chronic gene expression changes at seven time points (0, 5, 10, 15, 20, 30, 60 days post implantation or dpi) over a period of 60 days following nucleus implantation in the pearl oyster Pinctada martensii. A total of 81,390 unique transcripts (or unigenes) with a combined length of 96.8 million bp and a N50 value of 2227 bp were obtained. When compared with sequences in the nr, nt, Swiss-Prot, KEGG, COG and GO databases, 36,380 unigenes can find homologous genes. Pairwise comparison of gene expression among all the samples showed that the largest number (or 6846) of differentially expressed genes was observed at 10 dpi. The number then decreased to below 5000 at 15, 20 and 30 dpi and increased again to 6679 at 60 dpi. PCA analysis further showed that the seven time points can be roughly divided into four groups. Comparative transcriptomic analysis between the four groups identified a variety of genes showing differential expression at different time points, including many immune-related genes such as those encoding for toll-like receptor, lectin, scavenger receptor, and peroxidase. In addition, GO and KEGG enrichment analysis revealed that these differentially expressed genes were mainly associated with metabolism, ribosome function, immune response, signaling transduction, and cytoskeleton organization. Notably, two KEGG pathways, namely "cell adhesion molecules" and "primary immunodeficiency" were significantly enriched during the whole process. This finding indicates that genes in these pathways are likely to play critical roles in the immune tolerance of the pearl oysters. To conclude, the data obtained contribute to a better understanding of the molecular mechanisms of nucleus implantation induced immune response in the pearl oysters, and will facilitate the development of effective measures to improve the performance of pearl culture. (C) 2017 Elsevier Ltd. All rights reserved.