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• W2015499279 abstract "Sphingosine 1-phosphate (S1P), a potent bioactive phospholipid, has been reported to regulate a broad spectrum of biological processes. However, little is known regarding S1P’s effects on mitochondrial function. In this study, we investigated the S1P’s effects on the Peroxisome proliferator-activated receptor γ coactivator 1α (PGC-1α) signaling pathway and mitochondrial biogenesis in Hep G2 cells. Our results indicate that administration of S1P leads to a significant upregulation of mitochondrial DNA replication and transcription, increased mitochondrial mass, and elevated adenosine triphosphate synthesis. In addition, we found that treatment with S1P stimulates expression of PGC-1α, a master regulator of mitochondrial biogenesis, as well as its downstream targets: nuclear respiratory factor 1 (NRF1) and mitochondrial transcription factor A (TFAM). Moreover, our data demonstrate that S1P’s effects on PGC-1α and mitochondrial biogenesis are mediated by the protein kinase A/cAMP response element-binding protein (PKA/CREB) pathway. Importantly, we also revealed that S1P’s effects on mitochondrial biogenesis are dependent on its type 2 receptor (S1P2), though not on either its type 1 (S1P1) or type 3 (S1P3) receptors. Based on these observations, we concluded that S1P activates the PKA/CREB pathway through S1P2, which then promotes expression of PGC-1α/NRF1/TFAM and subsequent mitochondrial biogenesis in Hep G2 cells." @default.
• W2015499279 created "2016-06-24" @default.
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• W2015499279 date "2013-12-01" @default.
• W2015499279 modified "2023-10-18" @default.
• W2015499279 title "Sphingosine 1-phosphate (S1P) promotes mitochondrial biogenesis in Hep G2 cells by activating Peroxisome proliferator-activated receptor γ coactivator 1α (PGC-1α)" @default.
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• W2015499279 doi "https://doi.org/10.1007/s12192-013-0480-5" @default.
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