Supplementary MaterialsAdditional file 1: Table S1. 6: Table S6. DEGs involved in estrogen signaling, prostaglandin metabolism and signaling, and other selected pathways. (XLSX 117?kb) 12864_2018_4855_MOESM6_ESM.xlsx (117K) GUID:?3A7C2B82-2793-44F9-A74D-4ECCCC975294 Abstract Background Along with trophoblast elongation (Days 10 to 12), estradiol is secreted in increasing amounts for recognition of pregnancy. Endometrial secretions driven by ovarian progesterone and conceptus signals are essential for conceptus growth and development. Results of transcriptome analyses of whole endometrial tissue samples in the pig indicated the need for cell type-specific endometrial gene expression analysis for a better understanding of transcriptome changes associated with establishment of pregnancy. Results The most distinct transcriptome profile and the majority of differentially expressed genes (DEGs) were identified in luminal epithelium (LE). Many DEGs were found only in the cell type-specific analysis. The Imatinib manufacturer functional classification of DEGs identified in specific endometrial cell types revealed various distinct functions and pathways. Genes related to immune activation, estrogen signaling pathway, embryo development, and cell proliferation were upregulated in LE of pregnant gilts. Genes involved in sterol biosynthetic and metabolic processes and extracellular matrix were upregulated in stroma. Genes associated with cell communication such as via exosomes and vesicles were found as differential in LE, glandular epithelium (GE), and stroma (S). Conclusions This study revealed that conceptus signals induce different transcriptomic regulations in the endometrial compartments/cell types related to their specific function during recognition and establishment of pregnancy. Electronic supplementary material The online version of this article (10.1186/s12864-018-4855-y) contains supplementary material, which is available to authorized users. value of 0.0021 as a cut-off for GE, stroma, and complete tissue, hierarchical cluster analysis was performed for DEGs in MultiExperiment Viewer (MeV). Gene ontology (GO) and pathway analysis was conducted by using the online tool ToppCluster and the Database for Annotation, Visualization, and Integrated Discovery (DAVID) [27]. The data set from complete endometrial tissue samples was analyzed with the same pipeline except the step for removal of PCR duplicates. Raw FASTQ files were deposited at National Center for Biotechnology Information (NCBI) Gene Manifestation Omnibus (“type”:”entrez-geo”,”attrs”:”text”:”GSE109539″,”term_id”:”109539″GSE109539). Results Transcriptome sequencing of samples collected by LCM Cells from uterine LE, GE, and S were isolated from endometria collected from Day time 12 pregnant gilts (were only DE in stroma. The genes neuropeptide Y (could only be found as DE in total cells. Some members of the S100 calcium binding protein A family were highly upregulated in all three cell types, except S100 calcium binding protein A7 ((mRNA was detectable in LE cells during the estrous cycle by in situ hybridization, but undetectable during early pregnancy including Day time 12 [34]. In addition, the mRNAs for the calcium ion channel protein TRPV6 and the intracellular calcium-regulatory molecule S100G were upregulated in all three cell types but highest in LE of pregnant gilts which is in agreement with results from quantitative PCR and localization by ISH of a previous study [35]. Completely, the analysis of genes specifically DE in endometrial compartments showed differential local reactions to the conceptus-derived signals. Selected functional groups important for maternal acknowledgement of pregnancy (MRP) and Imatinib manufacturer establishment of pregnancy are discussed in the following. Genes involved in cell communication and endometrial redesigning In the present study, genes involved in extracellular exosomes/vesicles (EVs) were overrepresented in DEGs of LE, GE, and stroma. In sheep, EVs that carry genetic materials (mRNAs, proteins and miRNAs) were found in uterine luminal fluid (ULF), indicating its potential part in the conceptus-endometrial connection [36]. The overrepresentation of this theme indicates a similar importance of EVs for embryo-maternal relationships as suggested for humans [37]. In addition to cell-cell adhesion (observe below), cell junctions play also an important part in cell-to-cell communication. Genes involved in cell junction assembly, e.g., users of the connexin family were enriched Imatinib manufacturer for DEGs in LE. A number of connexins Imatinib manufacturer was upregulated, namely space junction protein alpha (and was only detectable in total endometrium samples and only in GRS GE. Manifestation and upregulation of was found in all three cell types with highest manifestation in LE whereas mRNA was only recognized in LE of Day time 12 pregnant gilts. In comparison to findings of connexin manifestation in human being and rodent endometrium and placenta, there are some similarities, but also unique variations probably related to the non-invasive type of placentation in the pig. In humans as well as with rodents, manifestation of connexin 26 Imatinib manufacturer (is definitely induced by the presence of a blastocyst.