In addition, expression of phospho-ERK (p-ERK), NF-κB p65 (Ser536), and tumor progression-associated proteins, such as matrix metallopeptidase 9 (MMP-9), vascular endothelial growth factor (VEGF), X-linked inhibitor of apoptosis protein (XIAP), and CyclinD1 were all significantly decreased by magnolol.
Cell viability, DNA damage and the mRNA expression of the CDC25C (cell division cycle 25C), CDKN1A (cyclin dependent kinase inhibitor 1A) and CHEK1 (checkpoint kinase 1), SQSTM1 (sequestosome 1) and ULK1 (unc-51 like autophagy activating kinase 1), RELA (RELA proto-oncogene, NF-κB subunit) and TP53BP1 (tumor protein p53 binding protein 1) genes important in cell cycle regulation, autophagy and cancer progression were investigated.
Ectopic expression of RPA2 inhibited the formation of the menin-NK-κB p65 complex and repressed the inhibitory effect of menin on expression of NF-κB-regulated genes that contribute to tumor progression.
Multivariate analysis using the Cox regression model confirmed that co-expression of nuclear β-arrestin1 and p65 was an independent prognostic factor for tumor progression (p = 0.008).
HBsAg inhibited the translocation of JTB to the mitochondria and decreased the phosphorylation of p65 through the interaction with JTB, After JTB knockdown, HBsAg exhibited a stronger potential to promote tumor progression.