A temporal extracellular transcriptome atlas of human preimplantation development
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE227442 | GEO | 2023/11/14
REPOSITORIES: GEO
Similar Datasets
Project description:Extracellular microRNA sequences have attracted interest for their potential use as accessible biomarkers that may be non-invasively collected from a wide range of biological fluids, including spent culture media. The ongoing milieu between the late-stage preimplantation embryo and the receptive uterus remains an actively investigated area of research and the physiological role of secreted microRNA sequences remains to be determined. Spent culture media used to culture late stage E4.0 murine blastocysts was screened for 641 mature microRNA sequences using a qPCR-based array. We report here the 39 sequences that were exclusively detected in the conditioned media using this approach. The embryonic miR-290 family were among the most abundant extracellular sequences. Notably, implantation-relevant members miR-126a, miR-101a, miR-143 and miR-320 were also detected.
2021-01-16 | GSE138285 | GEO
Project description:Pigs are important animals for agricultural and biomedical research, and its assisted reproductive technologies are urgently needed to be improved. Determining the underlying mechanism of epigenetic reprogramming in the early stage of preimplantation embryos derived from in vitro fertilization (IVF), parthenogenesis (PA) and androgenesis (AG), will not only contribute to assisted reproduction technologies of pigs but also will shed light into early human development. We generated 3D chromatin profiles for pig somatic cells, IVF, PA and AG preimplantation embryos. We found that the chromosomes in the pig preimplantation embryos are enriched for superdomains, i.e., the larger than 10M compartment domains, which are much rarer in mice. Wheras, p(s) curves, compartments and TADs, are largely conserved in somatic cells, and are gradually establishing during preimplantation embryogenesis. In the uniparental pig embryos, the establishment of chromatin architecture was highly asynchronized at all levels from IVF embryos, and a remarkably strong decompartmentalization was observed during zygotic genome activation (ZGA). Finally, chromosomes originating from oocytes always establish TADs faster than chromosomes originating from sperm, both before and during ZGA.
2020-07-02 | GSE153451 | GEO
Project description:Pigs are important animals for agricultural and biomedical research, and its assisted reproductive technologies are urgently needed to be improved. Determining the underlying mechanism of epigenetic reprogramming in the early stage of preimplantation embryos derived from in vitro fertilization (IVF), parthenogenesis (PA) and androgenesis (AG), will not only contribute to assisted reproduction technologies of pigs but also will shed light into early human development. We generated 3D chromatin profiles for pig somatic cells, IVF, PA and AG preimplantation embryos. We found that the chromosomes in the pig preimplantation embryos are enriched for superdomains, i.e., the larger than 10M compartment domains, which are much rarer in mice. Wheras, p(s) curves, compartments and TADs, are largely conserved in somatic cells, and are gradually establishing during preimplantation embryogenesis. In the uniparental pig embryos, the establishment of chromatin architecture was highly asynchronized at all levels from IVF embryos, and a remarkably strong decompartmentalization was observed during zygotic genome activation (ZGA). Finally, chromosomes originating from oocytes always establish TADs faster than chromosomes originating from sperm, both before and during ZGA.
2020-07-02 | GSE153450 | GEO
Project description:Study question: Is gene expression in human preimplantation embryos affected by medium used for culturing embryos during an IVF treatment? Summary answer: Six days of in vitro culture of human preimplantation embryos resulted in a medium-dependent expression level of genes involved in apoptosis, protein degradation, metabolism and cell cycle regulation. What is known already: Several human studies have shown an effect of culture medium on embryo development, pregnancy outcome and birthweight. However, the underlying mechanisms in human embryos are still unknown. In animal blastocysts, it has been demonstrated that culture of preimplantation embryos affects gene expression. In humans, it has been found that culture medium affects gene expression of cryopreserved embryos that, after thawing, were cultured in two different media for 2 more days. Study design, size, duration: In a multicenter trial, women were randomly assigned to two culture media groups (G5 and HTF). Data on embryonic development were collected for all embryos. In one center, embryos originating from 2PN zygotes that were not selected for transfer or cryopreservation on day 2 or 3, were further cultured until day 6 and collected for this study, if couples consented. Participants/materials, setting, methods: Ten blastocysts from each study group, matched for fertilization method, maternal age and blastocyst quality, were selected and their mRNA was isolated and amplified. Embryos were individually examined for genome-wide gene expression using Agilent microarrays and PathVisio was used to identify the pathways that showed a culture medium-dependent activity. Main results and the role of chance: Expression of 951 genes differed significantly (P < 0.01) between the two study groups. Eighteen pathways, involved in apoptosis, metabolism, protein processing and cell cycle regulation, showed a significant overrepresentation of differentially expressed genes (DEGs). The DNA replication, G1 to S cell cycle control and oxidative phosphorylation pathways were upregulated in the G5 group compared with the HTF group. This is in agreement with the higher number of cells seen in G5 embryos on day 2 and 3. Limitations, reasons for caution: Despite careful matching of the embryos, it cannot be ruled out that differences observed between the study groups are affected by factors not investigated. Extrapolation of these results to embryos used for transfer demands caution as in the present study embryos that were not selected for either embryo transfer or cryopreservation have been used for the culture experiment until day 6. Wider implications of the findings: This study shows that gene expression in human preimplantation embryos is affected by the culture medium used during an IVF treatment. Furthermore, it provides insight into the biological mechanisms that are affected. The increased cell cycle regulation is reflected by a higher number of blastomeres. Whether these results are also connected to long-term effects remains unknown. However, it is not unlikely that early adaptations of the preimplantation embryo to its environment persist during fetal and post-natal development. Note: this study has been conducted using the Agilent-028004 SurePrint G3 Human GE 4x180K Microarray. This array contains the same reporters as the Agilent-028004 SurePrint G3 Human GE 8x60K Microarray. As such we have linked this entry to the A-GEOD-14550 array design, belonging to the latter.
2015-07-08 | E-MTAB-3405 | biostudies-arrayexpress
Project description:Spent culture media was collected on day 5 after in vitro fertilization from 5 human blastocysts that were subsequently transferred or frozen. Corresponding blank culture media from the same lot were cultured alongside the embryos and used as negative controls along with PBS. The samples were prepared for total RNA sequencing using SMARTer® Stranded Total RNA-Seq Kit v2 - Pico Input Mammalian (Takara) and for small RNA sequencing using the QIAseq RNA Library Prep kit (Qiagen). Prepared libraries were sequenced as 100 bp paired end on an Illumina HiSeq 4000 sequencer for total RNA and Illumina NextSeq500 sequencer for small RNA. We found that total RNA mapped only 3% of the reads to gene regions in spent culture media and control and only 2% in PBS samples mapped to gene regions. For the small RNA analysis, human annotated miRNAs constituted from 0.1% to 1.4% of the mapped reads and 40% of small RNA reads mapped to the human genome. tiRNAs derived from 5 different mature tiRNA were differentially expressed when comparing conditioned to unconditioned media. We conclude, that in spite of applying state-of-the-art sensitive detection methods no miRNAs were found to be reliably present in the spent culture medium. In contrast, tiRNA fragments appear to be overexpressed in cultured IVF media samples.
2020-09-07 | GSE142380 | GEO
Project description:Intraindividual copy number variations (CNVs) happen post-zygotically, however their origin is largely unknown. They might appear either through aging or may resist following the common chromosome instability at the preimplantation stage. To uncover a part of this question we investigated fetal mosaicism and its origin. According to distribution pattern of frequent CNVs in derivatives of different germ layers, their origin is early development including preimplantation, whereas CNVs with low frequency occur in later stages. Both fetuses share CNVs, some in the same tissues and some other in different tissues. Functional analysis showed that altered genes were involved in embryonic development pathways. Each organ inherits CNVs with an unpredictable pattern due to extensive cell mixing/migration in embryonic development. Since we have found frequent intraindividual reciprocal CNVs as events with preimplantation origin in both fetuses, mosaic embryo transfer should be performed with caution because it may increase susceptibility to develop early/late onset diseases with genetic component even though recent reports seems to encourage IVF clinics for mosaic embryo transfer.
2020-09-25 | GSE104314 | GEO
Project description:Transcriptional profiling of E. coli cells comparing control untreated cells with cells treated with P. aeruginosa spent media. The goal was to identify the effects of P. aeruginosa spent media on E. coli cells.
2016-05-24 | GSE72182 | GEO
Project description:Mouse preimplantation imprinting
| PRJNA638349 | ENA
Project description:Transcriptional profiling of E. coli cells comparing control untreated cells with cells treated with iron-supplemented P. aeruginosa spent media. The goal was to identify the effects of P. aeruginosa spent media on E. coli cells, while neutralizing any effects of the P. aeruginosa siderophores
2016-05-24 | GSE72282 | GEO
Project description:A temporal extracellular transcriptome atlas of human preimplantation development
| PRJNA945056 | ENA