Project description:We report the single nucleus multiome (RNAseq+ATACseq) of a female mouse pituitary sample. This dataset was generated for supporting the development of a data-driven batch inference method and transforms often heterogeneous data matrices obtained from different samples into a uniformly cell-type annotated and integrated dataset.
Project description:We report the single nucleus multiome (RNAseq+ATACseq) of a male mouse pituitary sample. This dataset was generated for supporting the development of a novel computational framework for analyzing gene regulatorty circuitry from single cell multiome datasets. This computational framework extract regulatory circuits consisting of TFs, cis-regulatory sites and target genes by modelling the co-incidence of the RNA levels of the TFs, the chomatin accessibility of the TFs' binding sites and the RNA levels of target genes across single cell. Specifically we identified gonadotrope-specific regulatory circuits under the transcription factor Gata2. These regulatory circuits were validated by male mouse pituitary samples with gonadotrope-conditional knockout of Gata2 previously reported in GSE190066.
Project description:In order to understand the genomic and transcriptomic variability of the axolotl pallium, as well as reconstruct their intrinsic gene regulatory networks, we performed single-nucleus multiome sequencing (RNA and open chromatin) of whole axolotl pallium.
Project description:Deployment of a cell-specifying enhancer repertoire by the pioneer factor Pax7 The establishment and maintenance of cell identity depends on implementation of stable cell-specific chromatin landscapes. Pioneer transcription factors establish new cell fate competences by triggering chromatin remodeling during development. Here, we used pituitary cell specification to define the salient features of pioneer action. Comparison of purified pituitary cells of different lineages showed that chromatin accessibility differs at enhancers rather than promoters. The pioneer factor Pax7 specifies one pituitary lineage identity by opening a specific repertoire of enhancers that are distinct from the myogenic targets of Pax7. Pax7 binds its pioneer targets rapidly and days before chromatin remodeling and gene activation. Finally, enhancers opened by Pax7-dependent chromatin remodeling exhibit loss of DNA methylation and they acquire long term epigenetic memory. The present work identifies enhancer pioneering as a critical feature for cell fate specification and maintenance.
Project description:POU1F1 regulates, in the pituitary, the development of the prolactin-, growth hormone- and thyrotropin ß-expressing lineages and the expression of these hormone in the mature pituitary through the direct regulation of their promoters. Besides these functions, POU1F1 is also involved in other cellular processes in the pituitary, such as cell division and survival, but the genomic targets involved in these actions are not known. The present ChIP-chip study identified a large number of hitherto unknown potential direct targets that might be involved in these actions, such as Tcf4, Lmo4, Pax6, Trp53 etc. ChIP-chip was done from pregnant female mouse (C57Bl/6J) pituitary (3 pools of 12 pituitary anterior lobes, corresponding to three biological replicates) with POU1F1 (PIT-1)
Project description:Multiome single nuclei RNA/ATAC-seq analysis was performed on sorted population of SLAM LSK HSPCs to uncover transcriptional determinants regulating HSPCs in distinct transitional states.