MRNA expression profiling in mouse bronchoalveolar stem cells (BASC)
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE30323 | GEO | 2012/01/26
SECONDARY ACCESSION(S): PRJNA154797
REPOSITORIES: GEO
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Project description:We performed miRNA and mRNA profiling in BASC cells and c-Myc depleted BASC cells. We built potential miRNA-mRNA interaction networks specific to c-Myc regulation in BASCs Replicated profilling for both BASC cells and c-Myc depleted BASC cells.
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Project description:We performed miRNA and mRNA profiling in BASC cells and c-Myc depleted BASC cells. We built potential miRNA-mRNA interaction networks specific to c-Myc regulation in BASCs Replicated profilling for both BASC cells and c-Myc depleted BASC cells.
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Project description:Epithelial organs including the lung are known to possess regenerative abilities through activation of endogenous stem cell populations but the molecular pathways regulating stem cell expansion and regeneration are not well understood. Here we show that Gata6 regulates the temporal appearance and number of bronchioalveolar stem cells (BASCs) in the lung leading to the precocious appearance of BASCs and concurrent loss in epithelial differentiation in Gata6 null lung epithelium. This expansion of BASCs is the result of a dramatic increase in canonical Wnt signaling in lung epithelium upon loss of Gata6. Expression of the non-canonical Wnt receptor Fzd2 is down-regulated in Gata6 mutants and increased Fzd2 or decreased β-catenin expression rescues, in part, the lung epithelial defects in Gata6 mutants. During lung epithelial regeneration, we show that canonical Wnt signaling is activated in the niche containing BASCs and forced activation of Wnt signaling leads to a dramatic increase in BASC numbers. Moreover, Gata6 is required for proper lung epithelial regeneration and postnatal loss of Gata6 leads to increased BASC expansion and decreased differentiation. Together, these data demonstrate that Gata6 regulated Wnt signaling controls the balance between stem/progenitor expansion and epithelial differentiation required for both lung development and regeneration. Experiment Overall Design: 3 replicates of each condition-wild-type and GATA6 null tissue. 6 total samples.
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Project description:Epithelial organs including the lung are known to possess regenerative abilities through activation of endogenous stem cell populations but the molecular pathways regulating stem cell expansion and regeneration are not well understood. Here we show that Gata6 regulates the temporal appearance and number of bronchioalveolar stem cells (BASCs) in the lung leading to the precocious appearance of BASCs and concurrent loss in epithelial differentiation in Gata6 null lung epithelium. This expansion of BASCs is the result of a dramatic increase in canonical Wnt signaling in lung epithelium upon loss of Gata6. Expression of the non-canonical Wnt receptor Fzd2 is down-regulated in Gata6 mutants and increased Fzd2 or decreased β-catenin expression rescues, in part, the lung epithelial defects in Gata6 mutants. During lung epithelial regeneration, we show that canonical Wnt signaling is activated in the niche containing BASCs and forced activation of Wnt signaling leads to a dramatic increase in BASC numbers. Moreover, Gata6 is required for proper lung epithelial regeneration and postnatal loss of Gata6 leads to increased BASC expansion and decreased differentiation. Together, these data demonstrate that Gata6 regulated Wnt signaling controls the balance between stem/progenitor expansion and epithelial differentiation required for both lung development and regeneration. Keywords: gene targets in knockout mouse model
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Project description:We performed miRNA and mRNA profiling at postnatal day 14 and day 29 to compare hyperoxia-induced bronchopulmonary dysplasia and wild type. We built potential miRNA-mRNA interaction networks specific to brochopulmonary dysplasia. Replicated time course of mouse lung development at 2 time points (P14, P29). Three replicates per time point for bronchopulmonary dysplasia induced by hyperoxia mouse lung, and two replicates per time point for wild type mouse lung. This dataset represents the mRNA expression profiling component of the study.
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