Project description:The transcriptome pattern in blastocyst that developed from cumulus oocyte complexes matured in coculture with porcine luteal cells was investigated.
Project description:Comparative trascriptomic analysis between porcine early-blastocyst and Hatched blastocyst collected around day 5-6 direct comparison with dye-swap; two different arrays with 6 Samples each
Project description:We report the application of single cell transcriptome sequencing technology for high-throughput profiling of the brilliant cresyl blue test-positive porcine oocytes had higher rates of meiotic maturation, lower death rates, and better cleavage and blastocyst rates as well. Single oocyte transcriptome sequencing on porcine germinal vesicle (GV) stage oocytes that differentially stained by BCB identified 155 genes with significant abundance differences, including CDC5L, LDHA, SPATA22, RGS2, PAIP1, WEE1B and HSP27, which enriched in functionally important signaling pathways, such as spliceosome, cell cycle, oocyte meiosis, and nucleotide excision repair.
Project description:Compared to other mammalian species, porcine oocytes and embryos are characterized by large amounts of lipids stored mainly in the form of droplets in the cytoplasm. The amount and the morphology of LD change throughout the preimplantation development however, relatively little is known about expression of genes involved in lipid metabolism of early embryos. We compared porcine and bovine blastocyst stage embryos as well as dissected inner cell mass (ICM) and trophoblast (TE) cell populations with regard to lipid droplet storage and expression of genes functionally annotated to selected lipid Gene Ontology terms using RNA-seq. Comparing the number and the volume occupied by LD between bovine and porcine blastocysts, we have found significant differences both at the level of single embryo and a single blastomere. Aside from different lipid content we found that embryos regulate the lipid metabolism differentially at the gene expression level. Out of 125 genes, we have found 73 to be differentially expressed between entire porcine and bovine blastocyst, and 36 and 51 to be divergent between ICM and TE cell lines. We noticed significant involvement of cholesterol and ganglioside metabolism in preimplantation embryos as well as possible shift towards glucose rather than pyruvate dependence in bovine embryos. A number of genes like DGAT1, CD36 or NR1H3 may serve as lipid associated markers indicating distinct regulatory mechanisms while upregulated PLIN2, APOA1, SOAT1 indicate significant function during blastocyst formation and cell differentiation in both models.