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• W2892287258 abstract "The differentiation of the hormone-producing cell lineages of the anterior pituitary represents an informative model of mammalian cell fate determination. The generation and maintenance of two of these lineages, the GH-producing somatotropes and prolactin (PRL)-producing lactotropes, are dependent on the pituitary-specific transcription factor POU1F1. Whereas POU1F1 is expressed in both cell types, and plays a direct role in the activation of both the Gh and Prl genes, GH expression is restricted to somatotropes and PRL expression is restricted to lactotropes. These observations imply the existence of additional, cell type-enriched factors that contribute to the somatotrope and lactotrope cell identities. In this study, we use transgenic mouse models to facilitate sorting of somatotrope and lactotrope populations based on the expression of fluorescent markers expressed under Gh and Prl gene transcriptional controls. The transcriptomic analyses reveal a concordance of gene expression profiles in the two populations. The limited number of divergent mRNAs between the two populations includes a set of transcription factors that may have roles in pituitary lineage divergence and/or in regulating expression of cell type-specific genes after differentiation. Four of these factors were validated for lineage enrichment at the level of protein expression, two somatotrope enriched and two lactotrope enriched. Three of these four factors were shown to have corresponding activities in appropriate enhancement or repression of landmark genes in a cell culture model system. These studies identify novel regulators of the somatotropes and lactotropes, and they establish a useful database for further study of these lineages in the anterior pituitary." @default.
• W2892287258 created "2018-09-27" @default.
• W2892287258 creator A5043481796 @default.
• W2892287258 creator A5055912368 @default.
• W2892287258 creator A5080563290 @default.
• W2892287258 date "2018-09-21" @default.
• W2892287258 modified "2023-09-24" @default.
• W2892287258 title "Transcriptome analyses of female somatotropes and lactotropes reveal novel regulators of cell identity in the pituitary" @default.
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• W2892287258 doi "https://doi.org/10.1210/en.2018-00587" @default.
• W2892287258 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6260062" @default.
• W2892287258 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30247555" @default.
• W2892287258 hasPublicationYear "2018" @default.
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