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Icaritin Exacerbates Mitophagy and Synergizes with Doxorubicin to Induce Immunogenic Cell Death in Hepatocellular Carcinoma.
ACS Nano ( IF 15.8 ) Pub Date : 2020-03-18 , DOI: 10.1021/acsnano.0c00708
Zhuo Yu 1, 2 , Jianfeng Guo 1, 3 , Mengying Hu 1 , Yueqiu Gao 2 , Leaf Huang 1
Affiliation  

Hepatocellular carcinoma (HCC) resistant to both chemotherapy and immunotherapy is among the deadliest malignancies. Doxorubicin widely used in transarterial chemotherapy in HCC can induce immunogenic cell death (ICD), but the resulting immunogenicity is still weak. We aim to seek a strategy for improving the efficacy of ICD in HCC based on an immunoregulatory drug called icaritin. Icaritin induced mitophagy and apoptosis to provoke ICD both in mouse Hepa1-6 and human Huh7 HCC cells. A combination of icaritin and doxorubicin with a molar ratio of 1:2 played a synergistic role in ICD induction. The poly lactic-co-glycolic acid (PLGA)-polyethylene glycol (PEG)-aminoethyl anisamide (AEAA) nanoparticle (NP) targeted codelivery of icaritin and doxorubicin remodeled the immunosuppressive tumor microenvironment and triggered a robust immune memory response, which efficiently improved anti-HCC effect at an early stage in mouse HCC model. In addition, the combo PLGA-PEG-AEAA NP together with lenvatinib significantly prolonged survival time of mice at the advanced stage of HCC. Collectively, our findings reveal an anti-HCC mechanism of icaritin on mitophagy and provide an effective immune-based therapeutic strategy for HCC.

中文翻译:

Icaritin 加剧 Mitophagy 并与阿霉素协同诱导肝细胞癌中的免疫原性细胞死亡。

对化学疗法和免疫疗法均有耐药性的肝细胞癌 (HCC) 是最致命的恶性肿瘤之一。广泛用于HCC经动脉化疗的阿霉素可诱导免疫原性细胞死亡(ICD),但由此产生的免疫原性仍然较弱。我们的目标是寻求一种基于称为淫羊藿苷的免疫调节药物来提高 ICD 在 HCC 中的疗效的策略。Icaritin 在小鼠 Hepa1-6 和人类 Huh7 HCC 细胞中诱导线粒体自噬和细胞凋亡以引发 ICD。淫羊藿苷和阿霉素的摩尔比为 1:2 的组合在 ICD 诱导中发挥了协同作用。聚乳酸-乙醇酸共聚物 (PLGA)-聚乙二醇 (PEG)-氨基乙基茴香胺 (AEAA) 纳米颗粒 (NP) 靶向淫羊藿苷和阿霉素的共递送,重塑了免疫抑制性肿瘤微环境并触发了强大的免疫记忆反应,从而有效地提高了抗- 小鼠 HCC 模型早期的 HCC 效应。此外,PLGA-PEG-AEAA NP 与乐伐替尼的组合显着延长了 HCC 晚期小鼠的存活时间。总的来说,我们的研究结果揭示了淫羊藿苷对线粒体自噬的抗 HCC 机制,并为 HCC 提供了一种有效的基于免疫的治疗策略。
更新日期:2020-03-18
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