Synthesis and Evolution of Berberine Derivatives as a New Class of Antiviral Agents against Enterovirus 71 through the MEK/ERK Pathway and Autophagy

Yan-Xiang Wang, Lu Yang, Hui-Qiang Wang, Xiao-Qiang Zhao, Ting Liu, Ying-Hong Li, Qing-Xuan Zeng, Yu-Huan Li, Dan-Qing Song
2018 Molecules  
Taking berberine (BBR) as the lead, 23 new BBR derivatives were synthesized and examined for their antiviral activities against four different genotype enterovirus 71 (EV71) strains with a cytopathic effect (CPE) assay. Structure-activity relationship (SAR) studies indicated that introduction of a suitable substituent at the 9-position might be beneficial for potency. Among them, compound 2d exhibited most potent activities with IC50 values of 7.12–14.8 μM, similar to that of BBR. The effect of
more » ... 2d was further confirmed in a dose-dependent manner both in RNA and protein level. The mechanism revealed that 2d could inhibit the activation of MEK/ERK signaling pathway. Meanwhile, it could suppress the EV71-induced autophagy by activating AKT and inhibiting the phosphorylation of JNK and PI3KIII proteins. We consider BBR derivatives to be a new family of anti-EV71 agents through targeting host components, with an advantage of broad-spectrum anti-EV71 potency.
doi:10.3390/molecules23082084 pmid:30127288 fatcat:fpozm5s3yzga3b6uv5tjc3icge