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- W1976126064 abstract "Peroxisome proliferator activated receptor γ (PPAR-γ) plays important roles in cell cycle regulation, differentiation and apoptosis. Krüppel-like factor 4 (KLF4) modulates vascular smooth muscle cell (VSMC) phenotype. Both KLF4 and PPAR-γ are involved in VSMC proliferation and differentiation. However, the actual relationship between KLF4 and PPAR-γ in VSMCs is not clear. In this study, we found that PPAR-γ agonist pioglitazone increases KLF4 protein levels but does not influence KLF4 gene transcription. PPAR-γ overexpression increases, while PPAR-γ knockdown reduces KLF4 expression, suggesting that the increase in KLF4 protein levels induced by pioglitazone is PPAR-γ-dependent. Further study showed that pioglitazone enhances KLF4 protein stability through reducing KLF4 ubiquitination. Furthermore, we demonstrated that stabilization of KLF4 by pioglitazone was related to the activation of Akt signaling pathway. Taken together, we revealed that PPAR-γ agonist pioglitazone stabilizes KLF4 protein via activating Akt signaling and reducing KLF4 ubiquitination, providing further insights into PPAR-γ and KLF4 in regulating each other's expression in VSMCs." @default.
- W1976126064 created "2016-06-24" @default.
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- W1976126064 date "2014-01-01" @default.
- W1976126064 modified "2023-10-16" @default.
- W1976126064 title "PPAR-γ agonist stabilizes KLF4 protein via activating Akt signaling and reducing KLF4 ubiquitination" @default.
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- W1976126064 doi "https://doi.org/10.1016/j.bbrc.2013.11.129" @default.
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