2007
DOI: 10.1128/mcb.00601-06
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Interaction with MEK Causes Nuclear Export and Downregulation of Peroxisome Proliferator-Activated Receptor γ

Abstract: The mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK) cascade plays a central role in intracellular signaling by many extracellular stimuli. One target of the ERK cascade is peroxisome proliferator-activated receptor ␥ (PPAR␥), a nuclear receptor that promotes differentiation and apoptosis. It was previously demonstrated that PPAR␥ activity is attenuated upon mitogenic stimulation due to phosphorylation of its Ser84 by ERKs. Here we show that stimulation by tetradecanoyl phorb… Show more

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Cited by 161 publications
(167 citation statements)
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References 51 publications
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“…Additional studies are required to elucidate the specific mechanism through which Erk regulates PDK4 mRNA, the levels of which have been shown to be controlled by numerous proteins and signaling pathways (Abbot et al 2005;Sugden and Holness 2006;Roche and Hiromasa 2007). Some transcriptional regulators of PDK4, such as retinoid X receptor and FOXO1, have previously been found to be negatively regulated by Erk signaling (Arnaud et al 2004;Coll et al 2006;Asada et al 2007;Burgermeister et al 2007;Macoritto et al 2008;Shankar et al 2008;Meng et al 2011). Importantly, previous studies implicating PI3K/Akt as a negative regulator of PDK4 expression were performed in myocytes (Puthanveetil et al 2010), which must generate significant energy (i.e., ATP) from glucose in response to insulin to function properly (Latronico et al 2004).…”
Section: Discussionmentioning
confidence: 99%
“…Additional studies are required to elucidate the specific mechanism through which Erk regulates PDK4 mRNA, the levels of which have been shown to be controlled by numerous proteins and signaling pathways (Abbot et al 2005;Sugden and Holness 2006;Roche and Hiromasa 2007). Some transcriptional regulators of PDK4, such as retinoid X receptor and FOXO1, have previously been found to be negatively regulated by Erk signaling (Arnaud et al 2004;Coll et al 2006;Asada et al 2007;Burgermeister et al 2007;Macoritto et al 2008;Shankar et al 2008;Meng et al 2011). Importantly, previous studies implicating PI3K/Akt as a negative regulator of PDK4 expression were performed in myocytes (Puthanveetil et al 2010), which must generate significant energy (i.e., ATP) from glucose in response to insulin to function properly (Latronico et al 2004).…”
Section: Discussionmentioning
confidence: 99%
“…PPAR est un récepteur nucléaire impliqué dans plusieurs fonctions dont la différencia-tion, la prolifération, le métabolisme tissulaire et l'immunité de l'hôte [34,35]. L'invalidation de ce gène provoque une mortalité embryonnaire à mi-gestation due à un défaut dans les lignées trophoblastiques [33,36].…”
Section: Pparg Et Lbp-1a : Cibles Potentielles De La Voie Erk/mapk Daunclassified
“…Par ailleurs, le phénotype placentaire partiel des mutants Muc1 -/-suggère que les fonctions essentielles de PPAR sont relayées par d'autres cibles lors de la formation du placenta [38]. PPAR est une cible connue de la voie ERK/MAPK [34,39,40]. La phosphorylation de PPAR par ERK contribue à la réduction de son activité transcriptionnelle induite par les facteurs de croissance [39].…”
Section: Mek1 and Mek2 Functions In The Formation Of The Blood Placenunclassified
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“…Protein-protein interactions are important for many signaling processes. The research focused on PPARγ localizations disclosed the protein-protein interactions between PPARγ and MEKs in its nuclear translocation [25] . Indeed, several nuclear receptors were reported to interact with regulatory proteins via the AF2 domain of PPARγ, including glucocorticoid receptors, estrogen receptors, and NF-κB interactions with PPARγ [26] .…”
Section: Pparγ Agonists Suppressed Tgf-β1-induced Mcs Phenotype Altermentioning
confidence: 99%