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Int J Mol Sci. 2019 Apr 28;20(9). pii: E2099. doi: 10.3390/ijms20092099.

Transcriptome Changes in the Mink Uterus during Blastocyst Dormancy and Reactivation.

Author information

1
Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, #4899 Juye Street, Jingyue District, Changchun 130112, China. xinyan_99@163.com.
2
Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, #4899 Juye Street, Jingyue District, Changchun 130112, China. tcszjp@126.com.
3
Key Laboratory of Embryo Development and Reproductive Regulation of Anhui Province, College of Biological and Food Engineering, Fuyang Teachers College, Fuyang 236000, China. drliuyong@gmail.com.
4
Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, #4899 Juye Street, Jingyue District, Changchun 130112, China. Bahengxing@caas.cn.
5
Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, #4899 Juye Street, Jingyue District, Changchun 130112, China. weihaijun2005@sina.com.
6
Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, #4899 Juye Street, Jingyue District, Changchun 130112, China. Zhangyufei@caas.cn.
7
Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, #4899 Juye Street, Jingyue District, Changchun 130112, China. wangguiwu2005@163.com.
8
Centre de recherché en reproduction et fertilité, Faculté de médicine vétérinaire, Université de Montréal, St-Hyacinthe, QC J2S 2M2, Canada. d.murphy@umontreal.ca.
9
Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, #4899 Juye Street, Jingyue District, Changchun 130112, China. xingxiumei2004@126.com.

Abstract

Embryo implantation in the mink follows the pattern of many carnivores, in that preimplantation embryo diapause occurs in every gestation. Details of the gene expression and regulatory networks that terminate embryo diapause remain poorly understood. Illumina RNA-Seq was used to analyze global gene expression changes in the mink uterus during embryo diapause and activation leading to implantation. More than 50 million high quality reads were generated, and assembled into 170,984 unigenes. A total of 1684 differential expressed genes (DEGs) in uteri with blastocysts in diapause were compared to the activated embryo group (p < 0.05). Among these transcripts, 1527 were annotated as known genes, including 963 up-regulated and 564 down-regulated genes. The gene ontology terms for the observed DEGs, included cellular communication, phosphatase activity, extracellular matrix and G-protein couple receptor activity. The KEGG pathways, including PI3K-Akt signaling pathway, focal adhesion and extracellular matrix (ECM)-receptor interactions were the most enriched. A protein-protein interaction (PPI) network was constructed, and hub nodes such as VEGFA, EGF, AKT, IGF1, PIK3C and CCND1 with high degrees of connectivity represent gene clusters expected to play an important role in embryo activation. These results provide novel information for understanding the molecular mechanisms of maternal regulation of embryo activation in mink.

KEYWORDS:

RNA-seq; activated; embryo diapauses; mink; uterus

PMID:
31035421
PMCID:
PMC6540205
DOI:
10.3390/ijms20092099
[Indexed for MEDLINE]
Free PMC Article

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