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- W3136363970 abstract "Abstract There is increasing evidence that the core clock gene Period 1 (PER1) plays important roles in the formation of various tumors. However, the biological functions and mechanism of PER1 in promoting tumor progression remain largely unknown. Here, we discovered that PER1 was markedly downregulated in oral squamous cell carcinoma (OSCC). Then, OSCC cell lines with stable overexpression, knockdown, and mutation of PER1 were established. We found that PER1 overexpression significantly inhibited glycolysis, glucose uptake, proliferation, and the PI3K/AKT pathway in OSCC cells. The opposite effects were observed in PER1-knockdown OSCC cells. After treatment of PER1-overexpressing OSCC cells with an AKT activator or treatment of PER1-knockdown OSCC cells with an AKT inhibitor, glycolysis, glucose uptake, and proliferation were markedly rescued. In addition, after treatment of PER1-knockdown OSCC cells with a glycolysis inhibitor, the increase in cell proliferation was significantly reversed. Further, coimmunoprecipitation (Co-IP) and cycloheximide (CHX) chase experiment demonstrated that PER1 can bind with RACK1 and PI3K to form the PER1/RACK1/PI3K complex in OSCC cells. In PER1-overexpressing OSCC cells, the abundance of the PER1/RACK1/PI3K complex was significantly increased, the half-life of PI3K was markedly decreased, and glycolysis, proliferation, and the PI3K/AKT pathway were significantly inhibited. However, these effects were markedly reversed in PER1-mutant OSCC cells. In vivo tumorigenicity assays confirmed that PER1 overexpression inhibited tumor growth while suppressing glycolysis, proliferation, and the PI3K/AKT pathway. Collectively, this study generated the novel findings that PER1 suppresses OSCC progression by inhibiting glycolysis-mediated cell proliferation via the formation of the PER1/RACK1/PI3K complex to regulate the stability of PI3K and the PI3K/AKT pathway-dependent manner and that PER1 could potentially be a valuable therapeutic target in OSCC." @default.
- W3136363970 created "2021-03-29" @default.
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- W3136363970 date "2021-03-15" @default.
- W3136363970 modified "2023-10-13" @default.
- W3136363970 title "PER1 suppresses glycolysis and cell proliferation in oral squamous cell carcinoma via the PER1/RACK1/PI3K signaling complex" @default.
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- W3136363970 doi "https://doi.org/10.1038/s41419-021-03563-5" @default.
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