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  • Title: Platycodin D, a triterpenoid saponin from Platycodon grandiflorum, suppresses the growth and invasion of human oral squamous cell carcinoma cells via the NF-κB pathway.
    Author: Zhang Z, Zhao M, Zheng W, Liu Y.
    Journal: J Biochem Mol Toxicol; 2017 Sep; 31(9):. PubMed ID: 28548219.
    Abstract:
    This work was undertaken to explore the effects of platycodin D, a triterpenoid saponin from Platycodon grandiflorum, on the growth and invasiveness of human oral squamous cell carcinoma (OSCC). Platycodin D caused a significant, concentration-dependent inhibition of cell viability and induced significant apoptosis in OSCC cells. Moreover, platycodin D significantly inhibited OSCC cell invasion. At the molecular level, platycodin D increased the amounts of IκBα protein and reduced the expression of phosphorylated NF-κB p65, MMP-2, and MMP-9. Ectopic expression of constitutively active NF-κB p65 prevented platycodin D-mediated induction of apoptosis and suppression of invasion in OSCC cells. In vivo studies confirmed that platycodin D retarded the growth of subcutaneous SCC-4 xenograft tumors and reduced phosphorylation of NF-κB p65. Altogether, platycodin D shows inhibitory activity on OSCC growth and invasion through inactivation of the NF-κB pathway and might provide therapeutic benefits in the treatment of OSCC.
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