ArticleFrontiers in cell and developmental biology2026
Paeonol inhibits the development of oral squamous cell carcinoma through the PI3K/AKT signaling pathway.
Article in Frontiers in cell and developmental biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Paeonol (Pae), a phenolic bioactive compound extracted from Cortex Moutan, exhibits numerous pharmacological properties, including anti-inflammatory, immunomodulatory, and antitumor activities. However, the precise mechanisms by which Pae influences protective autophagy in oral squamous cell carcinoma (OSCC) remain incompletely characterized. Methods: This study assessed the effects of Pae treatment on proliferation, migration, and invasive potential of OSCC cells Results: Pae treatment promoted mitochondrial-dependent apoptosis and effectively inhibited epithelial-mesenchymal transition (EMT) by attenuating phosphorylation within the PI3K/AKT signaling pathway. Pae simultaneously initiated protective autophagy, confirmed by intact autophagic flux observed in CAL-27 and HSC-3 cells. Interference with this autophagic process through the autophagy inhibitor 3-methyladenine (3-MA) intensified apoptotic activity and markedly reduced OSCC cell proliferation. Conclusion: Pae suppressed OSCC cell proliferation and EMT and was associated with mitochondrial apoptosis and activation of autophagic flux, accompanied by reduced PI3K/AKT phosphorylation. Co-treatment with 3-methyladenine (3-MA) further decreased cell viability and enhanced apoptosis-associated changes, suggesting that pharmacological co-targeting of PI3K signaling and autophagy may potentiate Pae's antitumor activity. Further studies are warranted to delineate the relative contributions of apoptosis and autophagy to Pae-induced cytotoxicity in OSCC.
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