近日,河北工業(yè)大學(xué)生物物理研究所馬標(biāo)老師,使用IPHASE品牌產(chǎn)品:人肝微粒體在《Journal of Agricultural and Food Chemistry》權(quán)-威期刊上發(fā)表文章《Liensinine, a Novel and Food-Derived Compound, Exerts Potent Antihepatoma Efficacy via Inhibiting the Kv10.1 Channel》,影響因子6.1!
本論文中,對(duì)課題組提出的藥物結(jié)合袋進(jìn)行了虛擬篩選,并確定了一種高效的Kv10.1通道抑制劑Liensinine,可以高效抑制通道電流,IC50為0.24±0.07 μM。分子動(dòng)力學(xué)模擬和定點(diǎn)突變實(shí)驗(yàn)揭示了其抑制Kv10.1通道的分子機(jī)制。同時(shí)抗腫瘤實(shí)驗(yàn)分析了Liensinine在體內(nèi)外均能抑制肝癌細(xì)胞的增殖。另外,使用IPHASE肝微粒體產(chǎn)品以體外代謝反應(yīng)體系探究了其I相代謝情況。綜上所述,提出一種食品來(lái)源化合物,Liensinine,可以作為靶向Kv10.1的抗肝癌治療藥物的先導(dǎo)化合物。
摘要
Plant metabolites from natural product extracts offer unique advantages against carcinogenesis in the development of drugs. The target-based virtual screening from food-derived compounds represents a promising approach for tumor therapy. In this study, we performed virtual screening to target the presumed inhibitor-binding pocket and identified a highly potent Kv10.1 inhibitor, liensinine (Lien), which can inhibit the channel in a dose-dependent way with an IC50 of 0.24 ± 0.07 μM. Combining molecular dynamics simulations with mutagenesis experiments, our data show that Lien interacts with Kv10.1 by binding with Y539, T543, D551, E553, and H601 in the C-linker domain of Kv10.1. In addition, the interaction of sequence alignment and 3D structural modeling revealed differences between the C-linker domain of the Kv10.1 channel and the Kv11.1 channel. Furthermore, antitumor experiments revealed that Lien suppresses the proliferation and migration of HCC both in vitro and in vivo. In summary, the foodderived compound, Lien, may serve as a lead compound for antihepatoma therapeutic drugs targeting Kv10.1.
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