RT Journal Article SR Electronic T1 Inactivation of AKT/ERK Signaling and Induction of Apoptosis Are Associated With Amentoflavone Sensitization of Hepatocellular Carcinoma to Lenvatinib JF Anticancer Research JO Anticancer Res FD International Institute of Anticancer Research SP 2495 OP 2505 DO 10.21873/anticanres.15728 VO 42 IS 5 A1 CHE-JUI YANG A1 MENG-HSUAN WU A1 JAI-JEN TSAI A1 FEI-TING HSU A1 TE-CHUN HSIA A1 KUO-CHING LIU A1 YU-CHENG KUO YR 2022 UL http://ar.iiarjournals.org/content/42/5/2495.abstract AB Background/Aim: AKT/ERK signaling transduction and anti-apoptosis effects have both been recognized as important mediators of hepatocellular carcinoma (HCC) progression. Targeting AKT/ERK signaling and mediating apoptosis may be beneficial for alleviating HCC growth. Lenvatinib, a tyrosine kinase inhibitor, has been approved by the FDA to treat HCC since 2018 as a monotherapy with limited efficacy. Amentoflavone, a biflavonoid in natural plants, has been shown to have the potential to suppress HCC progression in previous studies. Whether the combination of lenvatinib and amentoflavone may show superior HCC suppression is unclear. Materials and Methods: We used MTT, flow cytometry and western blotting assays to identify the role of lenvatinib and amentoflavone in both Hep3B and Huh7 cells. Results: We found that amentoflavone enhances the suppressive effect of AKT/ERK signaling induced by lenvatinib and, thus, sensitizes HCC to lenvatinib. The intrinsic/extrinsic apoptosis pathways induced by lenvatinib were also boosted by amentoflavone. Conclusion: Amentoflavone sensitization of HCC to lenvatinib is associated with AKT/ERK inactivation and apoptosis induction.