4.3 Article

Cell type-specific endometrial transcriptome changes during initial recognition of pregnancy in the mare

期刊

REPRODUCTION FERTILITY AND DEVELOPMENT
卷 31, 期 3, 页码 496-508

出版社

CSIRO PUBLISHING
DOI: 10.1071/RD18144

关键词

Equus caballus; laser capture microdissection; maternal recognition of pregnancy; RNA-seq; uterus

资金

  1. European Union COST action [CA16119 CELLFIT]
  2. foundation Forschung fur das Pferd' (Zurich, Switzerland)
  3. Swiss National Science Foundation SNSF [159734]

向作者/读者索取更多资源

Previous endometrial gene expression studies during the time of conceptus migration did not provide final conclusions on the mechanisms of maternal recognition of pregnancy (MRP) in the mare. This called for a cell type-specific endometrial gene expression analysis in response to embryo signals to improve the understanding of gene expression regulation in the context of MRP. Laser capture microdissection was used to collect luminal epithelium (LE), glandular epithelium and stroma from endometrial biopsies from Day 12 of pregnancy and Day 12 of the oestrous cycle. RNA sequencing (RNA-Seq) showed greater expression differences between cell types than between pregnant and cyclic states; differences between the pregnant and cyclic states were mainly found in LE. Comparison with a previous RNA-Seq dataset for whole biopsy samples revealed the specific origin of gene expression differences. Furthermore, genes specifically differentially expressed (DE) in one cell type were found that were not detectable as DE in biopsies. Overall, this study revealed spatial information about endometrial gene expression during the phase of initial MRP. The conceptus induced changes in the expression of genes involved in blood vessel development, specific spatial regulation of the immune system, growth factors, regulation of prostaglandin synthesis, transport prostaglandin receptors, specifically prostaglandin F receptor (PTGFR) in the context of prevention of luteolysis.

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