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Polyphyllin I, a lethal partner of Palbociclib, suppresses non-small cell lung cancer through activation of p21/CDK2/Rb pathway and . | LitMetric
Cyclin-dependent kinases (CDKs) are hyperactive in many cancers and have served as cancer therapeutic targets for decades. Palbociclib (Palb) is the first approved CDK4/6 inhibitor to treat hormone receptor (HR)-positive, HER2-negative advanced breast cancer. Acquired drug resistance is one obstacle of Palb be utilized in other cancer. CDK2 compensation of CDK4/6 loss is one of the causes that cancer cells are resistant to Palb. Hence, targeting multiple CDKs could be a novel strategy to prevent the drug resistance of cancer cells and expand the application of Palb in other cancer. In this study, we initially indicated Polyphyllin I (PPI) significantly inhibits non-small lung cancer cell (NSCLC) proliferation, promotes cell apoptosis and . Mechanistically, PPI can inhibit Rb through the p21/CDK2/Rb signaling pathway in NSCLC. A combination of PPI and Palb exerts a significant synergistic anti-cancer ability on NSCLC. Of note, PPI can reverse Palb drug resistance. Herein, we first time demonstrated PPI can disturb CDK2 function through upregulation of p21. The PPI effect on CDK2 provides a choice for a chemotherapeutic strategy for the elimination of NSCLC. Our study highlighted the clinical significance of simultaneously blocking of CDK2 and CDK4/6 for NSCLC treatment.
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