Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

KDM6A improves the efficiency of nuclear transfer reprogramming in bovine

ABSTRACT: As a histone hallmark for transcription repression, Histone H3 lysine 27 trimethylation (H3K27me3) plays important roles in mammalian embryo development and induced pluripotent stem cells (iPSCs) generation. However, the expression profile and roles of H3K27me3 in bovine somatic cell nuclear transfer (SCNT) reprogramming remain poorly understood. In this study, we find SCNT embryos exhibit global hypermethylation of H3K27me3 from two-cell to eight-cell stage and its removal by ectopically expressed H3K27me3 demethylase-KDM6A could greatly improves SCNT efficiency. To illuminate the mechanism of improving SCNT reprogramming efficiency of KDM6A overexpression, we performed RNA sequencing of transcripts in SCNT morula with or without KDM6A overexpression. RNA-seq reveal that KDM6A overexpression could enhance transcription of genes mainly involved cell adhesion and cellular metabolism process, as well as X-linked genes. We first provides the transcriptome data of bovine SCNT morula with or without KDM6A overexpression. Meanwhile, we compared the differences of transcriptome between SCNT eight-cell embryos and morula. Our study provide a more promising approach to improving the efficiency of SCNT reprogramming and contribute to understanding the mechanism of first cell fate determine during embryo development in bovine.

ORGANISM(S): Bos taurus

PROVIDER: GSE114596 | GEO | 2019/01/31

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Similar Datasets

Histone demethylase KDM6A promotes somatic cell reprogramming by epigenetically regulate PTEN and IL-6 signal pathway [ChIP-seq]

Project description:Aberrant epigenetic reprogramming is one of the major barriers for somatic cell reprogramming. Although our previous study has demonstrated that KDM6A, a H3K27me3 demethylase, could improve nuclear reprogramming efficiency, but its role in somatic cell reprogramming and the mechanism remain unclear. In this study, we demonstrated that overexpression of Kdm6a could improve iPSC reprogramming efficiency in a demethylase enzymatic activity-dependent manner. And Kdm6a overexpression changed the gene expression profile and metabolic pattern through erasing the repressive H3K27me3 in fibroblast. Besides, we proved that KDM6A could promote IL-6 expression in MEF cells and the secreted IL-6 also could improve iPSC reprogramming efficiency. Furthermore, we found that KDM6A could promote PTEN expression, further regulate p-AKT and p-mTOR levels, which favor the reprogramming, and interference of PTEN could counteracted the promotion effect of KDM6A. Taken together, our data revealed that KDM6A could promote iPSC reprogramming efficiency by accelerate the change of gene expression profile and metabolic pattern in a demethylation-activity-dependent manner, which may give insight to the relationship between epigenetic modification and somatic cell reprogramming.

2021-10-20 | GSE138816 | GEO

Histone demethylase KDM6A promotes somatic cell reprogramming by epigenetically regulate PTEN and IL-6 signal pathway [RNA-seq]

2021-10-20 | GSE138815 | GEO

Histone Demethylase-Assisted Somatic Cell Nuclear Transfer Facilitates Derivation of Human Pluripotent Stem Cells

Project description:The extremely low efficiency of human embryonic stem cell (hESC) derivation using somatic cell nuclear transfer (SCNT) limits potential application. Blastocyst formation from human SCNT embryos occurs at a low rate and with only some oocyte donors. We previously showed in mice that reduction of histone H3 lysine 9 trimethylation (H3K9me3) through ectopic expression of the H3K9me3 demethylase Kdm4d greatly improves SCNT embryo development. Here we show that overexpression of a related H3K9me3 demethylase KDM4A improves human SCNT, and that, as in mice, H3K9me3 in the human somatic cell genome is an SCNT reprogramming barrier. Overexpression of KDM4A significantly improves the blastocyst formation rate in human SCNT embryos by facilitating transcriptional reprogramming, allowing derivation of NTESCs from all oocyte donors tested using adult AMD patient somatic nuclei donors. This conserved mechanistic insight has potential applications for improving SCNT in a variety of contexts, including regenerative medicine. Here we perform RNA-seq based transcriptome profiling in human Donor (fibroblast cells), in vitro fertilized embryos at 8-cell stages (IVF_8Cell), somatic cell nuclear transfer embryos at 8-cell stages (SCNT_8Cell), SCNT assisted by KDM4A 8-cell embryos (SCNT_KDM4A_8Cell). Besides, we also perform RNA-seq in Control human ES cells (CTR_hES) and SCNT assisted by KDM4A derived human ES cells (NTK) with duplicates.Â

2016-03-01 | E-GEOD-73362 | biostudies-arrayexpress

SCNT embryos are defective for H3K27me3 imprinting [ChIP-seq]

Project description:Animal cloning can be achieved through somatic cell nuclear transfer (SCNT), yet the success rate is very low. Recent studies have revealed H3K9me3 in donor cells and abnormal Xist activation as epigenetic barriers that impede SCNT reprogramming. Here we overcome both barriers by using Xist knockout donor cells combined with overexpressing Kdm4d and achieved the highest cloning efficiency in mice. However, post-implantation developmental defects and abnormal placenta were still observed, indicating presence of additional epigenetic barriers impedes SCNT cloning. Comparative DNA methylome analysis of IVF and SCNT blastocysts identified many abnormally methylated regions in SCNT embryos, despite successful global methylome reprogramming. Strikingly, allelic transcriptome and ChIP-seq analyses of preimplantation SCNT embryos revealed a complete loss of H3K27me3 imprinting, which likely accounts for postimplantation developmental defects of SCNT embryos. This study not only provides an efficient method for mouse cloning, but also paves the way for further improving SCNT cloning efficiency.

2018-06-27 | GSE114307 | GEO

Expression profiling reveals differential expressed genes between bovine IVF and SCNT embryos

Project description:Global hypermethylations of histone H3 lysine 9 (H3K9) tri- and di-methylation (H3K9me3/2) have been identified in bovine cloned embryos at the embryonic genome activation (EGA) stage (eight-cell stage), but the intrinsic reason for these anomalies remains elusive. To ascertain key factors responsible for aberrant H3K9 methylation, we performed RNA sequencing of transcripts in eight-cell bovine in vitro fertilized (IVF) and SCNT embryo. From the differentially expressed genes (DEGs) between IVF and SCNT embryos, we identified that the unsuccessful reactivation of two histone demethylases, KDM4D and KDM4E, is responsible for the incomplete H3K9me3/2 demethylation in SCNT embryos at the EGA stage. By mRNA injection, ectopic expression of either KDM4D or KDM4E could erase H3K9me3/2 barriers, improve blastocyst formation, and elevate cloning efficiency of bovine SCNT. To examine the detailed genes responsive to KDM4E overexpression, we also performed RNA sequencing of bovine eight-cell SCNT embryos with KDM4E compensation and found an obvious restoration of global transcriptional patterns in SCNT embryos. Our study first provides the transcriptome data set of bovine IVF and SCNT embryos during EGA with or without KDM4E overexpression, which advance the understanding of incomplete nuclear reprogramming, and contribute to the practical implications for genetically modified livestock breeding using SCNT.

2018-01-16 | GSE99294 | GEO

Histone Demethylase-Assisted Somatic Cell Nuclear Transfer Facilitates Derivation of Human Pluripotent Stem Cells

2016-03-01 | GSE73362 | GEO

KMT1A (SUV39H1) prevents somatic cell nuclear transfer (SCNT) mediated reprogramming

Project description:KMT1A (also known as SUV39H1)was involved in improving reprogramming efficiency during inducing pluripotent stem cells (iPSC). However, the knowledge about KMT1A regulating somatic cell nuclear transfer (SCNT) mediated reprogramming was limited. To understand the role of KMT1A during SCNT embryos in vitro development; we performed based transcriptome profiling in SCNT embryos at 8-cell stages and KMT1A knockdown 8-cell SCNT embryos. The data show the mRNAs regulated after KMT1A was down-regulated.

2017-07-31 | GSE99072 | GEO

Dynamics of small non-coding RNAs in bovine scNT embryos through the maternal-to-embryonic transition [non-coding RNA]

Project description:The efficiency of somatic cell nuclear transfer (scNT) for production of viable offspring is relatively low as compared to in vitro fertilization (IVF), presumably due to deficiencies in epigenetic reprogramming of the donor cell genome. Such defects may also involve the population of small non-coding RNAs (sncRNAs), which are important during early embryonic developmeNT.The objective of this study was to examine dynamic changes in relative abundance of sncRNAs during the maternal-to embryonic transition (MET) in bovine embryos produced by scNT as compared to IVF by using RNA sequencing. When comparing populations of miRNA in scNT versus IVF embryos, only miR-2340, miR-345, and miR34a were differentially expressed in morulae, though many more miRNAs were differentially expressed when comparing across developmental stages. Also of interest, distinct populations of piwi-interacting like RNAs (pilRNAs) were identified in bovine embryos prior to and during embryonic genome activation (EGA) as compared bovine embryos post EGA and differentiated cells. Overall, sncRNA sequencing analysis of preimplantation embryos revealed largely similar profiles of sncRNAs for IVF and scNT embryos at the 2-cell, 8-cell, morula and blastocyst stages of developmeNT.However, these sncRNA profiles, including miRNA, piRNA and tRNA fragments, were notably distinct prior to and after completion of the MET.

2021-06-18 | GSE178437 | GEO

Resolving multiple epigenetic barriers to pig SCNT-mediated reprogramming during embryonic genome activation [ChIP-Seq]

Project description:Pig cloning by somatic cell nuclear transfer (SCNT) frequently undergoes incomplete epigenetic remodeling during the maternal-to-zygotic transition, which leads to a significant embryonic loss before implantation. Here, we generated the first genome-wide landscapes of histone methylation in pig SCNT embryos. Excessive H3K9me3 and H3K27me3, but not H3K4me3, were observed in the genomic regions with unfaithful embryonic genome activation and donor cell-specific gene silencing. A combination of H3K9 demethylase KDM4A and GSK126, an inhibitor of H3K27me3 writer, could remove these epigenetic barriers and restore the global transcriptome in SCNT embryos. More importantly, TDG was defined as a pig-specific epigenetic regulator for nuclear reprogramming, which was not reactivated by H3K9me3 and H3K27me3 removal. Both combined treatment and transient TDG overexpression could promote DNA demethylation and enhance the blastocyst forming rates of SCNT embryos, which offers valuable methods to increase the cloning efficiency of genome-edited pigs for agricultural and biomedical purposes.

2021-09-21 | GSE161525 | GEO

Resolving multiple epigenetic barriers to pig SCNT-mediated reprogramming during embryonic genome activation

2021-09-21 | GSE161527 | GEO

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data