Schisandrin B targets CDK4/6 to suppress proliferation and enhance radiosensitivity in nasopharyngeal carcinoma by inducing cell cycle arrest.

ABSTRACT: Nasopharyngeal carcinoma (NPC) is notably prevalent in East and Southeast Asia, where despite advancements in radiotherapy leading to high control rates, challenges like radioresistance and collateral tissue damage remain significant. While Schisandrin B (SchB) has been demonstrated antitumor effects in various tumors, its efficacy in NPC remains unexplored. In this study, we explored the antitumor potential of Sch B on NPC, particularly its effects on cell proliferation and radiosensitivity. Our research demonstrates that Sch B effectively inhibits the proliferation of NPC cell lines HONE-1 and CNE-1 by inducing cell cycle G1 phase arrest, specifically through the down-regulation of cyclin-dependent kinase 4/6, without impacting the normal nasopharyngeal epithelial cell line NP69. This se

SUBMITTER: Fang Y 

PROVIDER: S-EPMC11897163 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature