Abstract：
:Peroxisome proliferator-activated receptor-γ (PPARγ) is a ligand-activated nuclear receptor which controls lipid and glucose metabolism. It is also the master regulator of adipogenesis. In adipocytes, ligand-dependent PPARγ activation is associated with proteasomal degradation; therefore, regulation of PPARγ degradation may modulate its transcriptional activity. Here, we show that neural precursor cell expressed developmentally down-regulated protein 4 (NEDD4), an E3 ubiquitin ligase, interacts with the hinge and ligand binding domains of PPARγ and is a bona fide E3 ligase for PPARγ. NEDD4 increases PPARγ stability through the inhibition of its proteasomal degradation. Knockdown of NEDD4 in 3T3-L1 adipocytes reduces PPARγ protein levels and suppresses adipocyte conversion. PPARγ correlates positively with NEDD4 in obese adipose tissue. Together, these findings support NEDD4 as a novel regulator of adipogenesis by modulating the stability of PPARγ.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Li JJ,Wang R,Lama R,Wang X,Floyd ZE,Park EA,Liao FFdoi
10.1038/srep38550subject
Has Abstractpub_date
2016-12-05 00:00:00pages
38550issn
2045-2322pii
srep38550journal_volume
6pub_type
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