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Duo of (-)-epigallocatechin-3-gallate and doxorubicin loaded by polydopamine coating ZIF-8 in the regulation of autophagy for chemo-photothermal synergistic therapy.
Biomaterials Science ( IF 6.6 ) Pub Date : 2020-01-09 , DOI: 10.1039/c9bm01614g
Xuerui Chen 1 , Rongliang Tong , Bingbing Liu , Hua Liu , Xiaode Feng , Shiping Ding , Qunfang Lei , Guping Tang , Jian Wu , Wenjun Fang
Affiliation  

To achieve highly systemic therapeutic efficacy, chemotherapy is combined with photothermal therapy for chemo-photothermal synergistic therapy; however, this strategy suffers from high toxicity and unsatisfactory sensitivity for cancer cells. Herein, we developed a pH- and photothermal-responsive zeolitic imidazolate framework (ZIF-8) compound for loading a dual-drug in the tumor site and improving their curative effects. Since autophagy always accompanies tumor progression and metastasis, there is an unmet need for an anticancer treatment related to the regulation of autophagy. Green tea polyphenols, namely, (-)-epigallocatechin-3-gallate (EGCG) and doxorubicin (DOX), both of which exhibit anticancer activity, were dual-loaded via polydopamine (PDA) coating ZIF-8 (EGCG@ZIF-PDA-PEG-DOX, EZPPD for short) through hierarchical self-assembly. PDA could transfer photothermal energy to increase the temperature under near-infrared (NIR) laser irradiation. Due to its pH-response, EZPPD released EGCG and DOX in the tumor microenvironment, wherein the temperature increased with the help of PDA and NIR laser irradiation. The duo of DOX and EGCG induced autophagic flux and accelerated the formation of autophagosomes. In a mouse HeLa tumor model, photothermal-chemotherapy could ablate the tumor with a significant synergistic effect and potentiate the anticancer efficacy. Thus, the results indicate that EZPPD renders the key traits of a clinically promising candidate to address the challenges associated with synergistic chemotherapy and photothermal utilization in antitumor therapy.

中文翻译:

聚多巴胺涂层ZIF-8负载的(-)-表没食子儿茶素-3-没食子酸酯和阿霉素在调节自噬作用中的化学-光热协同治疗作用。

为了达到高度全身性的治疗效果,化学疗法与光热疗法相结合可实现化学-光热协同疗法。然而,该策略具有高毒性和对癌细胞的不令人满意的敏感性。在这里,我们开发了一种pH和光热反应型沸石咪唑酸盐骨架(ZIF-8)化合物,用于在肿瘤部位加载双重药物并改善其疗效。由于自噬总是伴随着肿瘤的进展和转移,因此对与自噬调节有关的抗癌治疗存在未得到满足的需求。通过聚多巴胺(PDA)涂层ZIF-8(EGCG @ ZIF-PDA)双重加载绿茶多酚,即都具有抗癌活性的(-)-表没食子儿茶素-3-没食子酸酯(EGCG)和阿霉素(DOX)。 -PEG-DOX,简称EZPPD)通过分层自组装。PDA可以在近红外(NIR)激光辐照下传递光热能以提高温度。由于其pH响应,EZPPD在肿瘤微环境中释放了EGCG和DOX,其中温度借助PDA和NIR激光照射而升高。DOX和EGCG的二重体诱导自噬通量并加速自噬体的形成。在小鼠HeLa肿瘤模型中,光热化学疗法可消融肿瘤,并具有明显的协同作用并增强抗癌效果。因此,结果表明,EZPPD呈现了临床上有希望的候选者的关键特征,以解决与协同化疗和抗肿瘤治疗中光热利用相关的挑战。由于其pH响应,EZPPD在肿瘤微环境中释放了EGCG和DOX,其中温度借助PDA和NIR激光照射而升高。DOX和EGCG的二重体诱导自噬通量并加速自噬体的形成。在小鼠HeLa肿瘤模型中,光热化学疗法可消融肿瘤,并具有明显的协同作用并增强抗癌效果。因此,结果表明,EZPPD呈现了临床上有希望的候选者的关键特征,以解决与协同化疗和抗肿瘤治疗中光热利用相关的挑战。由于其pH响应,EZPPD在肿瘤微环境中释放了EGCG和DOX,其中温度借助PDA和NIR激光照射而升高。DOX和EGCG的二重体诱导自噬通量并加速自噬体的形成。在小鼠HeLa肿瘤模型中,光热化学疗法可消融肿瘤,并具有明显的协同作用并增强抗癌效果。因此,结果表明,EZPPD呈现了临床上有希望的候选者的关键特征,以解决与协同化疗和抗肿瘤治疗中光热利用相关的挑战。DOX和EGCG的二重体诱导自噬通量并加速自噬体的形成。在小鼠HeLa肿瘤模型中,光热化学疗法可消融肿瘤,并具有明显的协同作用并增强抗癌效果。因此,结果表明,EZPPD呈现了临床上有希望的候选者的关键特征,以解决与协同化疗和抗肿瘤治疗中光热利用相关的挑战。DOX和EGCG的二重体诱导自噬通量并加速自噬小体的形成。在小鼠HeLa肿瘤模型中,光热化学疗法可消融肿瘤,并具有明显的协同作用并增强抗癌效果。因此,结果表明,EZPPD呈现了临床上有希望的候选者的关键特征,以解决与协同化疗和抗肿瘤治疗中光热利用相关的挑战。
更新日期:2020-03-03
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