4.8 Article

Single nucleus multi-omics regulatory landscape of the murine pituitary

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NATURE COMMUNICATIONS
卷 12, 期 1, 页码 -

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NATURE PORTFOLIO
DOI: 10.1038/s41467-021-22859-w

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  1. National Institute of Health (NIH) [DK46943]
  2. Canadian Institutes of Health Research (CIHR) [PJT-162343, PJT-169184]
  3. NIH from the Eunice Kennedy Shriver National Institute Of Child Health & Human Development [R01HD065029]
  4. NIH NICHD [R01HD093461]
  5. NIH [R01HD087057]
  6. NIH NIDDK [1R01DK113776-01]

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In order to investigate transcriptional regulatory mechanisms, a team profiled the transcriptome, chromatin accessibility, and methylation status of over 70,000 single nuclei from adult mouse pituitaries. They identified transcriptional and chromatin accessibility programs distinguishing each major cell type, as well as co-regulated gene sets that recapitulate cell type clustering. The study highlights the centrality of chromatin accessibility in shaping cell-defining transcriptional programs.
To provide a multi-omics resource and investigate transcriptional regulatory mechanisms, we profile the transcriptome, chromatin accessibility, and methylation status of over 70,000 single nuclei (sn) from adult mouse pituitaries. Paired snRNAseq and snATACseq datasets from individual animals highlight a continuum between developmental epigenetically-encoded cell types and transcriptionally-determined transient cell states. Co-accessibility analysis-based identification of a putative Fshb cis-regulatory domain that overlaps the fertility-linked rs11031006 human polymorphism, followed by experimental validation illustrate the use of this resource for hypothesis generation. We also identify transcriptional and chromatin accessibility programs distinguishing each major cell type. Regulons, which are co-regulated gene sets sharing binding sites for a common transcription factor driver, recapitulate cell type clustering. We identify both cell type-specific and sex-specific regulons that are highly correlated with promoter accessibility, but not with methylation state, supporting the centrality of chromatin accessibility in shaping cell-defining transcriptional programs. The sn multi-omics atlas is accessible at snpituitaryatlas.princeton.edu. The pituitary gland plays important roles in the regulation of key physiological functions. Here the authors provide a multiomics atlas including transcriptome, chromatin accessibility, and methylation status of over 70,000 single nuclei (sn) from mouse pituitaries.

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