Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Transcription profiling of human, mouse, Bos taurus embryo

ABSTRACT: The process of early development of mammals is subtly and accurately controlled by the regulation networks of embryo cells. Time course expression data measured at different stages during early embryo development process can give us valuable information by revealing the dynamic expression patterns of genes in genome wide scale. In this study, bovine embryo expression data were generated at oocyte, one cell stage, two cell stage, four cell stage, eight cell stage, sixteen cell stage, morula, and blastocyst; Human embryo expression data were generated at one cell stage, two cell stage, four cell stage, eight cell stage, morula, and blastocyst; Mouse embryo expression data were generated at one cell stage, two cell stage, four cell stage, eight cell stage, morula, and blastocyst. Experiment Overall Design: Bovine, Human, and Mouse embryos were harvested at successive stage from oocyte to blastocyste. Total RNAs were extracted, amplified and hybridized onto Affymetrix microarrays.

ORGANISM(S): Bos taurus

SUBMITTER: Dan Xie

PROVIDER: E-GEOD-18290 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Rewirable gene regulatory networks in the preimplantation embryonic development of three mammalian species.

Xie Dan D Chen Chieh-Chun CC Ptaszek Leon M LM Xiao Shu S Cao Xiaoyi X Fang Fang F Ng Huck H HH Lewin Harris A HA Cowan Chad C Zhong Sheng S

Genome research 20100310 6

Mammalian preimplantation embryonic development (PED) is thought to be governed by highly conserved processes. While it had been suggested that some plasticity of conserved signaling networks exists among different mammalian species, it was not known to what extent modulation of the genomes and the regulatory proteins could "rewire" the gene regulatory networks (GRN) that control PED. We therefore generated global transcriptional profiles from three mammalian species (human, mouse, and bovine) a ...[more]

PMID: 20219939

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Project description:Blastocyst formation is a primordial event of pre-implantation development since it is required for pregnancy establishment and progression. The blastocyst plays a pivotal role because it is the stage at which the embryo is transferred and starts coordinated cross-talks with the mother. It is also the terminal step of pre-implantation developmentbefore transfer; it reflects all stresses the embryo may have faced during the process of in-vitro treatment. Achieving the formation of a morphologically healthy blastocyst following normal kinetics is a good sign but remains a poor indicator of embryo quality. Considering the limitation of the invasive methods for competence assessment, the analysis of blastocysts’ gene expression is a promising way to improve our understanding of blastocyst formation and to study the effects of different treatments on gene expression. Methods: Early, expanded and hatched blastocysts were collected for RNA extraction, amplification, and cDNA microarray hybridization. Gene candidates (IFNt, PLAC8, SSLP1, AKR1B1, HNRNPA2B1, ARGFX, NANOS, CCNB1) were selected and confirmed using Q-RT-PCR to validate the microarray data. Results: Our analysis show that hatched blastocysts are enriched in genes transcripts implicated in implantation, cell adhesion and extracellular matrix digestion. Early blastocysts expressed genes mainly involved in cell cycle control, transcription and translation. Q-RT-PCR validated most microarray results (87.5%). Some of the differentially expressed genes are interesting as potential markers of competence. Conclusions: Overall, our study provides new insights into the molecular regulation of blastocyst formation. In addition, it could help assess blastocyst staging and select better embryos based on the expression of quality markers. In the present study the Laval/Sirard_bovine_embryo_3K_V3.0 array was used to conduct a series of 18 hybridizations (for three Blastocysts stages (early, expended, hatched) with three biological replicates and dye swaps) in a loop design experiment.

Dataset Information

Transcription profiling of human, mouse, Bos taurus embryo

Publications

Rewirable gene regulatory networks in the preimplantation embryonic development of three mammalian species.

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