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Stimulus-responsive tea polyphenols as nanocarrier for selective intracellular drug delivery.
Journal of Biomaterials Applications ( IF 2.9 ) Pub Date : 2020-05-09 , DOI: 10.1177/0885328220924539
Zhiheng Guo 1 , Yi Yang 2 , Yang Shu 1 , Li Qiao 3 , Min Peng 1 , Zhenpeng Wang 4
Affiliation  

Nanodrug delivery systems have been widely researched to achieve efficient antitumor drug delivery. However, the controlled drug delivery at tumor cells remains the main challenge for antitumor therapy. Herein, a pH and reduction-responsive nanocarrier based on green tea polyphenols was employed as a smart excipient for chemotherapy drug delivery. Paclitaxel, as a chemotherapy drug, was loaded in the nanocarrier, noted as green tea polyphenol/paclitaxel. The green tea polyphenol/paclitaxel kept constant diameter at physiological condition (i.e. pH 7.4), while gradually enlarged at acid environment (pH = 5.5) and the reductive environment. The in vitro paclitaxel release results indicated that the release of paclitaxel from the green tea polyphenol/paclitaxel at pH 7.4 was slow, whereas obviously accelerated at the acid environment (pH = 5.5) and the reductive environment. The in vitro antitumor assay showed more efficient tumor cells inhibition of green tea polyphenol/paclitaxel than free paclitaxel. Meanwhile, due to the proper size (∼100 nm), green tea polyphenol/paclitaxel could effectively accumulate at tumor sites. In the in vivo mice bearing A549 xenograft mouse models, green tea polyphenol/paclitaxel exhibited satisfactory antitumor effect and depressed system toxicity when compared with free paclitaxel, owing to the enhanced paclitaxel accumulation and controlled paclitaxel release in the tumor cells. With simple compositions and satisfactory antitumor effects, this green tea polyphenol-based nanocarrier can be a promising nanodrug delivery system for the therapy of cancers.



中文翻译:

刺激响应茶多酚作为纳米载体用于选择性细胞内药物递送。

纳米药物递送系统已被广泛研究以实现有效的抗肿瘤药物递送。然而,肿瘤细胞的受控药物递送仍然是抗肿瘤治疗的主要挑战。在此,基于绿茶多酚的 pH 和还原响应纳米载体被用作化疗药物递送的智能赋形剂。紫杉醇作为一种化疗药物,被装载在纳米载体中,称为绿茶多酚/紫杉醇。绿茶多酚/紫杉醇在生理条件下(即pH 7.4)保持恒定直径,而在酸性环境(pH = 5.5)和还原环境下逐渐增大。体外紫杉醇释放结果表明,绿茶多酚/紫杉醇在pH 7.4时释放紫杉醇缓慢,而在酸性环境(pH = 5. 5)和还原环境。体外抗肿瘤试验显示绿茶多酚/紫杉醇比游离紫杉醇更有效地抑制肿瘤细胞。同时,由于合适的尺寸(~100 nm),绿茶多酚/紫杉醇可以有效地在肿瘤部位积聚。在携带 A549 异种移植小鼠模型的 体内 小鼠中,与游离紫杉醇相比,绿茶多酚/紫杉醇表现出令人满意的抗肿瘤作用和降低的系统毒性,这是由于紫杉醇在肿瘤细胞中的积累增加和紫杉醇的释放受到控制。这种基于绿茶多酚的纳米载体具有简单的组成和令人满意的抗肿瘤作用,可以成为一种有前途的纳米药物递送系统,用于治疗癌症。体外抗肿瘤试验显示绿茶多酚/紫杉醇比游离紫杉醇更有效地抑制肿瘤细胞。同时,由于合适的尺寸(~100 nm),绿茶多酚/紫杉醇可以有效地在肿瘤部位积聚。在携带 A549 异种移植小鼠模型的 体内 小鼠中,与游离紫杉醇相比,绿茶多酚/紫杉醇表现出令人满意的抗肿瘤作用和降低的系统毒性,这是由于紫杉醇在肿瘤细胞中的积累增加和紫杉醇的释放受到控制。这种基于绿茶多酚的纳米载体具有简单的组成和令人满意的抗肿瘤作用,可以成为一种有前途的纳米药物递送系统,用于治疗癌症。体外抗肿瘤试验显示绿茶多酚/紫杉醇比游离紫杉醇更有效地抑制肿瘤细胞。同时,由于合适的尺寸(~100 nm),绿茶多酚/紫杉醇可以有效地在肿瘤部位积聚。在携带 A549 异种移植小鼠模型的 体内 小鼠中,与游离紫杉醇相比,绿茶多酚/紫杉醇表现出令人满意的抗肿瘤作用和降低的系统毒性,这是由于紫杉醇在肿瘤细胞中的积累增加和紫杉醇的释放受到控制。这种基于绿茶多酚的纳米载体具有简单的组成和令人满意的抗肿瘤作用,可以成为一种有前途的纳米药物递送系统,用于治疗癌症。绿茶多酚/紫杉醇可以有效地积聚在肿瘤部位。在携带 A549 异种移植小鼠模型的 体内 小鼠中,与游离紫杉醇相比,绿茶多酚/紫杉醇表现出令人满意的抗肿瘤作用和降低的系统毒性,这是由于紫杉醇在肿瘤细胞中的积累增加和紫杉醇的释放受到控制。这种基于绿茶多酚的纳米载体具有简单的组成和令人满意的抗肿瘤作用,可以成为一种有前途的纳米药物递送系统,用于治疗癌症。绿茶多酚/紫杉醇可以有效地积聚在肿瘤部位。在携带 A549 异种移植小鼠模型的 体内 小鼠中,与游离紫杉醇相比,绿茶多酚/紫杉醇表现出令人满意的抗肿瘤作用和降低的系统毒性,这是由于紫杉醇在肿瘤细胞中的积累增加和紫杉醇的释放受到控制。这种基于绿茶多酚的纳米载体具有简单的组成和令人满意的抗肿瘤作用,可以成为一种有前途的纳米药物递送系统,用于治疗癌症。由于肿瘤细胞中紫杉醇的积累增强和紫杉醇的释放受到控制。这种基于绿茶多酚的纳米载体具有简单的组成和令人满意的抗肿瘤作用,可以成为一种有前途的纳米药物递送系统,用于治疗癌症。由于肿瘤细胞中紫杉醇的积累增强和紫杉醇的释放受到控制。这种基于绿茶多酚的纳米载体具有简单的组成和令人满意的抗肿瘤作用,可以成为一种有前途的纳米药物递送系统,用于治疗癌症。

更新日期:2020-06-30
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