Transcriptomics

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Gpr116 regulates pulmonary surfactant pool size


ABSTRACT: The amount of pulmonary surfactant within type II cells and in the alveolar space, referred to as surfactant pool sizes, are tightly regulated. The molecular pathways that sense and regulate surfactant pool size within the alveolus have not been identified and constitute a fundamental knowledge gap in the field. Our data show that mice with a germline mutation in the orphan G-protein-coupled receptor, GPR116, have a 30-fold accumulation of surfactant phospholipids that causes respiratory distress in adult animals. This phenotype is associated with increased surfactant secretion and induction of the purinergic receptor P2RY2 in young animals, and lipid-laden macrophages and alveolar destruction in older animals. We further demonstrate that GPR116 mRNA expression is developmentally regulated in the murine lung with peak expression at birth when surfactant pool sizes are maximal. Within the lung, GPR116 protein expression is restricted to the apical plasma membrane of alveolar type I and type II epithelial cells.

ORGANISM(S): Mus musculus

PROVIDER: GSE41417 | GEO | 2013/04/10

SECONDARY ACCESSION(S): PRJNA177187

REPOSITORIES: GEO

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