SIN3A regulates porcine early embryonic development by modulating CCNB1 expression
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA662327 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR12608400_1.fastq.gz | Fastqsanger.gz | |||
| SRR12608400_2.fastq.gz | Fastqsanger.gz | |||
| SRR12608401_1.fastq.gz | Fastqsanger.gz | |||
| SRR12608401_2.fastq.gz | Fastqsanger.gz | |||
| SRR12608402_1.fastq.gz | Fastqsanger.gz |
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Project description:SIN3A is the central scaffold protein of the SIN3/HDAC transcriptional repressor complex. We previously found that SIN3A participates in the mouse preimplantation development by finetuning HDAC1 expression. However, it remains unresolved if this functional significance of SIN3A was conserved in other mammals. The objective of this work was thus to characterize the expression profiles and the functional role of SIN3A in preimplantation development using non-rodent animal models. RNA-seq results show a large amount of SIN3A mRNA is present in oocytes and early embryos prior to embryonic genome activation and a low amount thereafter, suggesting a maternal origin of SIN3A in all species examined. Interestingly, immunofluorescence data show that SIN3A protein level peaks at 4-cell stage in pigs compared with morula stage in cattle, suggesting a differential role of SIN3A among species. Indeed, SIN3A depletion in early embryos causes a developmental arrest at 2-cell stage in pigs but does not affect bovine early embryonic development. In contrast with mouse data, SIN3A depletion results in only a slight decrease and even no difference in HDAC1 expression in porcine and bovine early embryos, respectively. In addition, HDAC1 knockdown does not cause 2-cell block, however, leads to a reduced blastocyst rate, suggesting the effect of SIN3A depletion on porcine early embryos is independent of HDAC1. By using un-biased RNA-seq approach, we found that CCNB1 transcript level is dramatically reduced. Moreover, CCNB1 knockdown results in a similar phenotype as SIN3A depletion. Injection of exogenous CCNB1 into SIN3A-depleted embryos could partly rescue embryonic development beyond 2-cell stage. In conclusion, our results indicate SIN3A plays an essential role in porcine early embryonic development, which probably involving the regulation of CCNB1 expression.
2020-09-16 | GSE157650 | GEO
Project description:SIN3A is the central scaffold protein of the SIN3/histone deacetylase (HDAC) transcriptional repressor complex. SIN3A participates in the mouse preimplantation development by fine-tuning HDAC1 expression. However, it remains unresolved if this functional significance of SIN3A was conserved in other mammals. Herein, RNA-seq results show a large amount of SIN3A mRNA is present in oocytes and early embryos prior to embryonic genome activation and a low amount thereafter, suggesting a maternal origin of SIN3A in pigs, cattle, mice, and humans. Interestingly, immunofluorescence data show that SIN3A protein level peaks at four-cell stage in pigs compared with morula stage in cattle. SIN3A depletion in early embryos causes a developmental arrest at two-cell stage in pigs but does not affect bovine early embryonic development. In contrast with mouse data, SIN3A depletion results in only a slight decrease and even no difference in HDAC1 expression in porcine and bovine early embryos, respectively. In addition, HDAC1 knockdown does not cause two-cell block but leads to a reduced blastocyst rate. By using unbiased RNA-seq approach, we found that Cyclin B1 (CCNB1) transcript level is dramatically reduced. Moreover, CCNB1 knockdown results in a similar phenotype as SIN3A depletion. Injection of exogenous CCNB1 mRNA into SIN3A-depleted embryos could partly rescue embryonic development to pass two-cell stage. In conclusion, our results indicate SIN3A plays an essential role in porcine early embryonic development, which probably involves the regulation of CCNB1 expression.
| S-EPMC7937639 | biostudies-literature
Project description:Sin3a is the central scaffold protein of the prototypical Hdac1/2 chromatin repressor complex, crucially required during early embryonic development for the growth of pluripotent cells of the inner cell mass. Here, we explore the endogenous composition of the Sin3a-Hdac complex in pluripotent embryonic stem (ES) and differentiated cells. To do this, we established an endogenous double immunoprecipitation strategy coupled with quantitative mass spectrometry (ENDIP-MS) allowing us to define the precise composition of the Sin3a complex in multiple cell types. We identify the Fam60a subunit as a key defining feature of a variant Sin3a complex present in ES cells, but not in differentiated cells. Fam60a co-occupies H3K4me3 positive promoters with Sin3a and is essential to maintain it on chromatin. Consistent with this, Fam60a depletion phenocopies the loss of Sin3a, leading to decreased proliferation, an extended G1-phase and the deregulation of genes associated with differentiation. Taken together, our data characterise Fam60a as an essential core subunit of a variant Sin3a complex in ES cells required to promote rapid proliferation and to prevent unscheduled differentiation.
2017-05-19 | PXD005464 | Pride
Project description:In this study: (1) we distinguished Tet2 target genes that are regulated by its catalytic vs. noncatalytic functions in ESCs by transcriptomic profiling of Tet2 wildtype (WT), Tet2 catalytic mutant (Mut), and Tet2 knockout (KO) mouse ESCs by RNA-seq. (2) We mapped genome-wide DNA methylation of Tet2-WT, Tet2-Mut, and Tet2-KO ESCs by WGBS, to establish a critical role for Tet2 in demethylating promoters and enhancers of its catalytic target genes. (3) We determined how the genome-wide occupancy of the epigenetic modifiers Sin3a and Sap30 and the enrichment of H3K27ac, are affected in Tet2-Mut and Tet2-KO ESCs versus Tet2-WT by CUT&Tag and identified that Tet2 deficiency diminishes Sin3a occupancy at promoters and enhancers. (4) We mapped Sin3a levels genome-wide in Tet1/2 double catalytic mutant (DMUT) and Tet1/2 double knockout (DKO) ESCs, and found that deficiency of both Tet1 and Tet2 resulted in decreased levels of Sin3a in a subset of active enhancers.
2023-06-23 | GSE213398 | GEO
Project description:Comparison of global transcription profiles in mouse E12.5 embryonic lung from Shh-Cre;Sin3a flox/+ control with Shh-Cre;Sin3a flox/flox revealed a large change genes due to loss of Sin3a in early lung development.
2017-06-22 | GSE94306 | GEO
Project description:ChIP coupled with NGS identifies genome-wide binding sites of a ES cells specific Sin3a/Hdac complex. The aim of these experiments is to study the role of Fam60a in the Sin3a/Hdac complex. ChIP-Seq experiments reveal that Fam60a is required to maintain high levels of Sin3a binding on target genes in mESCs. Depletion of Fam60a causes a drop of Sin3a binding to target sites. Underlining the function of Fam60a in mES cells, ChIP-seq analysis of Sin3a and Fam60a in mouse fibroblasts reveal strikingly low global binding level of Sin3a to its target genes while Fam60a is absent at these sites.
2017-04-24 | GSE81081 | GEO
Project description:Tet2 regulates Sin3a recruitment at active enhancers in embryonic stem cells
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Project description:Congenital diaphragmatic hernia (CDH) is a common and severe congential malformation characterized by defects in diaphragm, lung, and pulmonary vascular developent. Despite the frequency and severity of CDH, the underlying developmental mechanisms are not understood. We identified SIN3A loss of function sequence variants in two patients with CDH. To understand the genetic and developmental mechanisms of CDH, we generated Sin3a conditional knockout mice that lack Sin3a expression in the lung mesenchyme. SIN3A plays a critcal role during development, directing cell lineage specification and cell cycling. Despite this role, SIN3A sequence variants have not been reported in patients with CDH or other congential malformations. We found that Sin3a CKO mice have abnormal lung stucture at birth into adulthood. To determine the role of Sin3a in lung mesenchymal development, we performed transcriptomic analysis of Sin3a CKO and control lungs at embryonic day 16 (E16) when cell cycling defects were first evident, postnatal day 0 (P0) when lung defects were first evident, and P3 when lung phenotyopes worsened. In this dataset are expression data from dissected embryonic and postnatal lungs of Sin3a CKO and control mice. Sin3a CKO mice have conditional deletion of Sin3a in the lung mesenchyme directed by Tbx4rtta; tetocre (Tbx4rtta; tetocre; Sin3a flox/flox CKO). Control mice are heterozygous for Sin3a in the lung mesenchyme (Tbx4rtta; tetocre; Sin3a flox/WT). These data were used to identify transcriptional changes due to loss of Sin3a in the lung mesenchyme.
2023-12-31 | GSE246305 | GEO