Document Detail


The ISWI ATPase Snf2l Is Required for Superovulation and Regulates Fgl2 in Differentiating Mouse Granulosa Cells.
MedLine Citation:
PMID:  23616592     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Imitation Switch (ISWI) proteins are catalytic subunits of chromatin remodeling complexes that alter nucleosome positioning by hydrolyzing ATP to regulate access to DNA. In mice there are two paralogs, SNF2-homolog (SNF2H) and SNF2-like (SNF2L), which participate in different complexes and have contrasting patterns of expression. Here we investigate the role of SNF2L in ovaries by characterizing a mouse bearing an inactivating deletion of exon 6 which disrupts the ATPase domain. Snf2l mutant mice produce significantly fewer eggs than control mice when superovulated. Gonadotropin stimulation leads to a significant deficit in secondary follicles and an increase in abnormal antral follicles. Mutant females also fail to induce Fibrinogen-like 2 (Fgl2) in response to human chorionic gonadotropin (hCG), while overexpression of SNF2L is sufficient to drive its expression in granulosa cells. SNF2L is also shown to directly interact with the nuclear receptor co-activator Flightless I (FLI-I) as shown by immunoprecipitation. These results begin to establish a role for SNF2L in the precise coordination of gene expression in granulosa cells during folliculogenesis, and its broader implications in fertility.
Authors:
David Pépin; François Paradis; Carol Perez-Iratxeta; David J Picketts; Barbara C Vanderhyden
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-4-24
Journal Detail:
Title:  Biology of reproduction     Volume:  -     ISSN:  1529-7268     ISO Abbreviation:  Biol. Reprod.     Publication Date:  2013 Apr 
Date Detail:
Created Date:  2013-4-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0207224     Medline TA:  Biol Reprod     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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