Overexpression of the small GTPase Arl4D suppresses adipogenesis.

Abstract:

:Arl4D is a developmentally-regulated member of the ADP-ribosylation factor/ARF-like protein (ARF/Arl) family of Ras-related GTPases. Although Arl4 protein is reported to be expressed in adipose tissue, the function of Arl4D is unknown. To investigate the potential role of Arl4D in adipogenesis, we examined Arl4D expression during adipocyte differentiation and the effects of Arl4D overexpression on adipogenesis. Arl4D protein increased early in adipogenesis, with the highest expression at 4 h after adipogenesis initiation, followed by a decrease thereafter. Overexpression of Arl4D in 3T3-L1 cells potently inhibited their ability to differentiate and accumulate lipid, and reduced the expression of adipogenic genes. Furthermore, treatment with valproic acid, an Arl4D inducer, suppressed adipogenesis. These results suggest that rapid reduction of Arl4D is required for adipogenesis to proceed.

journal_name

Int J Mol Med

authors

Yu J,Ka SO,Kwon KB,Lee SM,Park JW,Park BH

doi

10.3892/ijmm.2011.751

subject

Has Abstract

pub_date

2011-11-01 00:00:00

pages

793-8

issue

5

eissn

1107-3756

issn

1791-244X

journal_volume

28

pub_type

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