Abstract:
:Peroxisome proliferator-activated receptor gamma (PPAR gamma) belongs to a nuclear receptor super family that functions as a master regulator of adipocyte differentiation. PPAR gamma binds its DNA response element together with a partner, retinoid X receptor (RXR), in fat cells. Five RXR ligands (HX600, HX630, DA022, DA124, LGD1069, referred to as retinoid synergists) by themselves exhibit weak transactivation activity on the PPAR gamma response element. However, addition of PPAR gamma-specific ligand in this assay gave rise to a 5- to 13-fold increase, indicating a strong synergy between these ligands. LGD1069 was the most effective activator of the RXR/PPAR gamma heterodimer on the transactivation of the reporter gene. But, in contrast to the other four RXR ligands, LGD1069 did not show synergistic induction of ST 13 preadipocytes to adipocytes. This apparent contradiction may result from the ligand-binding property of LGD1069. In this article we discuss the fact that retinoid synergists also act as PPAR gamma synergists.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Sato M,Yajima Y,Kawashima S,Tanaka K,Kagechika Hdoi
10.1006/bbrc.2000.4172subject
Has Abstractpub_date
2001-01-26 00:00:00pages
646-51issue
3eissn
0006-291Xissn
1090-2104pii
S0006-291X(00)94172-Xjournal_volume
280pub_type
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