Transcriptome analysis of rhesus monkey embryos
Ontology highlight
ABSTRACT:
ORGANISM(S): Macaca mulatta
PROVIDER: GSE112535 | GEO | 2019/01/31
REPOSITORIES: GEO
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Project description:Embryonic stem cells (ESCs) may be able to cure or alleviate the symptoms of various degenerative diseases. However, unresolved issues regarding apoptosis, maintaining function and tumor formation mean a prudent approach should be taken towards advancing ESCs into human clinical trials. The rhesus monkey provides the ideal model organism for developing strategies to prevent immune rejection and test the feasibility, safety and efficacy of ESC-based medical treatments. Transcriptional profiling of rhesus ESCs provides a foundation for future pre-clinical ESC research using non-human primates as the model organism. In this research we use microarray, immunocytochemistry, real-time and standard RT-PCR to characterize and transcriptionally profile rhesus monkey embryonic stem cells. We identify 367 rhesus monkey stemness genes, we demonstrate the high level (>85%) of conservation of rhesus monkey stemness gene expression across five different rhesus monkey embryonic stem cell lines, we demonstrate that rhesus monkey ESC lines maintain a pluripotent undifferentiated state over a wide range of Pou5f1 (Oct-4) expression levels and we compare rhesus monkey, human and murine stemness genes to identify the key mammalian stemness genes. The supplementary tables list the genes that have been upregulated in each undifferentiated rhesus monkey embryonic stem cell line (GSM99998, GSM99999,GSM100000, GSM100001, GSM100002, GSM99965, GSM99966) in comparison analysis with the pooled differentiated embryonic stem cells (GSM99840). Supplemental Table 1 contains the comparison analysis for all 52,865 probe sets on the rhesus monkey gene chip, Supplemental Table 2 contains the rhesus monkey genes that were significantly upregulated (FC>3) in the ORMES-6 biological replicates, Supplemental Table 3 contains the rhesus monkey genes that were significantly upregulated (FC>3) in the pooled differentiated EBs and Supplemental Tables 4-8 represent genes that were significantly upregulated in ORMES 6A, 7, 9, 10 and 13 respectively. Supplemental Table 9 contains the RT-PCR primers used in this project. Keywords: Rhesus monkey embryonic stem cell microarray
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Project description:Mammalian preimplantation development involves highly conserved genetic programs across species. However, temporal differences in gene network activation and membership differences in gene modules are also observed. In this study, we focus on understanding the activation of crucial gene networks in trophoectoderm (TE) and inner cell mass across species using human, monkey, and mouse models. By single cell RNA sequencing analysis in cynomolgus monkey early embryos, we find relatively late major embryonic genome activation occurring at early morula stages. Gene network preservation analysis reveals that genetic programs in monkey embryos more closely resemble human embryos compared to mouse, supporting the notion that preimplantation development in primate species are divergent from rodent species. For example, primate blastocysts show differential expression of ICM and TE genes such as X and Y, whereas mouse show differences in A and B expression. Interestingly, the overall conservation of TE gene networks is higher than ICM across three species, suggesting a more conserved developmental program in TE lineage differentiation. Additionally, TE-specific gene networks are exclusively activated at the blastocyst stage with low or no expression in morula or earlier embryos. In contrast, a majority of ICM-specific genes are strongly activated during the first major wave of EGA, which are further fine-tuned during late morula and blastocyst stages. Taken together, our study provides new insight into mammalian preimplantation development and sequential activation of lineage-specific genetic programs of TE versus ICM.
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