RGD Reference Report - PPAR-gamma coactivator-1alpha regulates progesterone production in ovarian granulosa cells with SF-1 and LRH-1. - Rat Genome Database

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PPAR-gamma coactivator-1alpha regulates progesterone production in ovarian granulosa cells with SF-1 and LRH-1.

Authors: Yazawa, T  Inaoka, Y  Okada, R  Mizutani, T  Yamazaki, Y  Usami, Y  Kuribayashi, M  Orisaka, M  Umezawa, A  Miyamoto, K 
Citation: Yazawa T, etal., Mol Endocrinol. 2010 Mar;24(3):485-96. doi: 10.1210/me.2009-0352. Epub 2010 Feb 4.
RGD ID: 10059648
Pubmed: PMID:20133449   (View Abstract at PubMed)
PMCID: PMC5419099   (View Article at PubMed Central)
DOI: DOI:10.1210/me.2009-0352   (Journal Full-text)

Previously, we demonstrated that bone marrow-derived mesenchymal stem cells (MSCs) differentiate into steroidogenic cells such as Leydig and adrenocortical cells by the introduction of steroidogenic factor-1 (SF-1) and treatment with cAMP. In this study, we employed the same approach to differentiate umbilical cord blood (UCB)-derived MSCs. Despite UCB-MSCs differentiating into steroidogenic cells, they exhibited characteristics of granulosa-luteal-like cells. We found that peroxisome proliferator-activated receptor-gamma coactivator-1alpha (PGC-1alpha) was expressed and further induced by cAMP stimulation in UCB-MSCs. Consistent with these results, tissue-specific expression of Pgc-1alpha was observed in rat ovarian granulosa cells. PGC-1alpha binds to the NR5A family [SF-1 and liver receptor homolog-1 (LRH-1)] of proteins and markedly enhances their transcriptional activities. Reporter assays revealed that PGC-1alpha activated the promoter activities of SF-1 and LRH-1 target genes. Infection of KGN cells (a human cell line derived from granulosa cells) with adenoviruses expressing PGC-1alpha resulted in the induction of steroidogenesis-related genes and stimulation of progesterone production. PGC-1alpha also induced SF-1 and LRH-1, with the latter induced to a greater extent. Knockdown of Pgc-1alpha in cultured rat granulosa cells resulted in attenuation of gene expression as well as progesterone production. Transactivation of the NR5A family by PGC-1alpha was repressed by Dax-1. PGC-1alpha binds to the activation function 2 domain of NR5A proteins via its consensus LXXLL motif. These results indicate that PGC-1alpha is involved in progesterone production in ovarian granulosa cells by potentiating transcriptional activities of the NR5A family proteins.



Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
Ppargc1aRatpositive regulation of progesterone biosynthetic process  IMP  RGD 
Ppargc1aRatpositive regulation of transcription by RNA polymerase II  IMP  RGD 

Objects Annotated

Genes (Rattus norvegicus)
Ppargc1a  (PPARG coactivator 1 alpha)


Additional Information