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LRH-1 and PTF1-L coregulate an exocrine pancreas-specific transcriptional network for digestive function [RNA-Seq]

ABSTRACT: Two separate pools of three Flox or two Lrh1t-/- pancreas RNA preparations was subjected to the Illumina RNA-seq protocol.

ORGANISM(S): Mus musculus

PROVIDER: GSE34030 | GEO | 2011/11/30

SECONDARY ACCESSION(S): PRJNA156441

REPOSITORIES: GEO

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LRH-1 and PTF1-L coregulate an exocrine pancreas-specific transcriptional network for digestive function [RNA-Seq]

Project description:Two separate pools of three Flox or two Lrh1t-/- pancreas RNA preparations was subjected to the Illumina RNA-seq protocol. Examination of mRNA levels in induced Lrh1 pancreas knockout and wild-type mice.

2011-11-30 | E-GEOD-34030 | biostudies-arrayexpress

LRH-1 and PTF1-L coregulate an exocrine pancreas-specific transcriptional network for digestive function

Project description:This SuperSeries is composed of the following subset Series: GSE34030: LRH-1 and PTF1-L coregulate an exocrine pancreas-specific transcriptional network for digestive function [RNA-Seq] GSE34295: LRH-1 and PTF1-L coregulate an exocrine pancreas-specific transcriptional network for digestive function [ChIP-Seq] Refer to individual Series

2011-12-09 | E-GEOD-34296 | biostudies-arrayexpress

LRH-1 and PTF1-L coregulate an exocrine pancreas-specific transcriptional network for digestive function [ChIP-Seq]

Project description:We have determined the cistrome and transcriptome for the nuclear receptor liver receptor homolog-1 (LRH-1) in the exocrine pancreas. Chromatin immunoprecipitation (ChIP)-seq and RNA-seq analyses reveal that LRH-1 directly induces expression of genes encoding digestive enzymes and secretory and mitochrondrial proteins. LRH-1 cooperates with the pancreas transcription factor 1-L complex (PTF1-L) in regulationg exocrine pancreas-specific gene expression. Elimination of LRH-1 in adult mice reduced the concentration of several lipases and proteases in pancreatic fluid and impaired pancreatic fluid secretion in response to cholecystokinin. Thus, LRH-1 is a key regulator of the exocrine pancreas-specific transcriptional network required for the production and secretion of pancreatic fluid.

2011-12-09 | GSE34295 | GEO

LRH-1 and PTF1-L coregulate an exocrine pancreas-specific transcriptional network for digestive function [ChIP-Seq]

2011-12-09 | E-GEOD-34295 | biostudies-arrayexpress

LRH-1 and PTF1-L coregulate an exocrine pancreas-specific transcriptional network for digestive function

Project description:This SuperSeries is composed of the SubSeries listed below.

2011-12-09 | GSE34296 | GEO

PERK role in the exocrine pancreas

Project description:Molecular characterization of PERK's role in the mouse exocrine pancreas. Postnatal days 16, 19 and 32 were examined. Postnatal day 16 represents a stage immediately prior to severe cytological changes in the exPKO mice. Postnatal day 19 represents the initial stage of severe phenotypes in the exPKO mice. Postnatal day 32 represents the middle stage of severe phenotypes (about 2 wks from the initiation) in the exPKO mice. Keywords: transgenic mouse

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Expression profiling of centroacinar cells from adult zebrafish pancreas

Project description:We sequenced mRNA from two preparations of isolated Notch-responsive ductal pancreas cells and compared transcript expression to all other non-Notch-responsive cells from each sample to charactarize zebrafish centroacinar cells.

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Continuous clonal labeling reveals uniform progenitor potential in the adult exocrine pancreas

Project description:The tissue dynamics that govern maintenance and regeneration of the pancreas remain largely unknown. In particular, the presence and nature of a cellular hierarchy remains a topic of debate. Previous lineage tracing strategies in the pancreas relied on specific marker genes for clonal labeling, which left other populations untested and failed to account for potential widespread phenotypical plasticity. Here we employed a tracing system that depends on replication-induced clonal marks. We found that in homeostasis, steady acinar replacement events characterize tissue dynamics, to which all acinar cells have an equal ability to contribute. Similarly, regeneration following pancreatitis was best characterized by an acinar self-replication model, as no evidence for a cellular hierarchy was detected. In particular, rapid regeneration in the pancreas was found to be driven by an accelerated rate of acinar fission-like events. Together these results provide a comprehensive and quantitative model of cell dynamics in the exocrine pancreas.

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TrxG complex catalytic and non-catalytic activity play distinct roles in pancreas progenitor specification and differentiation (E18.5 Dpy30∆P pancreas)

Project description:Purpose: To gain insight into why Dpy30∆P acinar cells fail to express terminal makers, we performed RNA-seq using E18.5 control and Dpy30∆P pancreata. Methods: Floxed Dpy30 mice were crossed to Pdx1-Cre driver mice to obtain conditional deletion of Dpy30 exon 4 in the pancreas. In all studies, knockout mice (Dpy30∆P, Pdx1-Cre; Dpy30flox/flox) were compared to littermate controls (Dpy30flox/flox or Dpy30flox/wt). Results: Differential gene expression analysis demonstrated that endocrine cell hormones such as Ins2 and acinar cell digestive enzymes were downregulated in the E18.5 Dpy30∆P pancreas compared to controls. GO term analysis indicated that genes involved in pancreatic secretion, digestion and proteolysis were reduced in Dpy30∆P cells. Notably, transcripts with very high expression levels (above 9000 FPKM) were more downregulated in the E18.5 Dpy30∆P pancreas compared to transcripts with lower expression levels. Conclusions: Overall, these data suggest increased variation in acinar cell transcript expression in the Dpy30∆P pancreas.

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Hippo Signaling Regulates Differentiation and Maintenance in the Exocrine Pancreas

Project description:The Hippo signaling pathway has become recognized as a context-dependent regulator of cell proliferation, differentiation, and apoptosis in species ranging from Drosophila to human. In this study, we sought to understand whether Hippo signaling plays a role in pancreatic development and organ homeostasis. We analyzed mRNA from 5 samples each from control and DKO mouse pancreas using Affymetrix MouseGene 1.0 ST Array platfrom. Array data was processed by Affymetrix array computational tools.

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