Oxygen-producing and pH-responsive targeted DNA nanoflowers for enhanced chemo-sonodynamic therapy of lung cancer

作者全名：Liao, Hongjian; Cao, Yuchao; Hu, Can; Shen, Shangfeng; Zhang, Zhifei; Li, Dairong; Du, Yonghong

作者地址：[Liao, Hongjian; Cao, Yuchao; Hu, Can; Shen, Shangfeng; Zhang, Zhifei; Du, Yonghong] Chongqing Med Univ, Coll Biomed Engn, State Key Lab Ultrasound Med & Engn, Chongqing 400016, Peoples R China; [Liao, Hongjian; Cao, Yuchao; Hu, Can; Shen, Shangfeng; Zhang, Zhifei; Du, Yonghong] Chongqing Med Univ, Chongqing Key Lab Biomed Engn, Chongqing 400016, Peoples R China; [Li, Dairong] Chongqing Med Univ, Affiliated Hosp 1, Dept Resp & Crit Care Med, Chongqing 400016, Peoples R China; [Du, Yonghong] 1 Yixueyuan Rd, Chongqing 400016, Peoples R China; [Li, Dairong] 1 Youyi Rd, Chongqing 400016, Peoples R China

通信作者：Du, YH (通讯作者)，1 Yixueyuan Rd, Chongqing 400016, Peoples R China.; Li, DR (通讯作者)，1 Youyi Rd, Chongqing 400016, Peoples R China.

来源：MATERIALS TODAY BIO

ESI学科分类：　

WOS号：WOS:001208452000001

JCR分区：Q1

影响因子：8.7

年份：2024

卷号：25

期号：　

开始页：　

结束页：　

文献类型：Article

关键词：DNA nanoflower; Sonodynamic therapy; Lung cancer; Hypoxia; Active-targeting

摘要：Lung cancer is the deadliest kind of cancer in the world, and the hypoxic tumor microenvironment can significantly lower the sensitivity of chemotherapeutic drugs and limit the efficacy of different therapeutic approaches. In order to overcome these problems, we have designed a drug-loaded targeted DNA nanoflowers encoding AS1411 aptamer and encapsulating chemotherapeutic drug doxorubicin and oxygen-producing drug horseradish peroxidase (DOX/HRP-DFs). These nanoflowers can release drugs in response to acidic tumor microenvironment and alleviate tumor tissue hypoxia, enhancing the therapeutic effects of chemotherapy synergistic with sonodynamic therapy. Owing to the encoded drug-loading sequence, the doxorubicin loading rate of DNA nanoflowers reached 73.24 +/- 3.45%, and the drug could be released quickly by disintegrating in an acidic environment. Furthermore, the AS1411 aptamer endowed DNA nanoflowers with exceptional tumor targeting properties, which increased the concentration of chemotherapeutic drug doxorubicin in tumor cells. It is noteworthy that both in vitro and in vivo experiments demonstrated DNA nanoflowers could considerably improve the hypoxia of tumor cells, which enabled the generation of sufficient reactive oxygen species in combination with ultrasound, significantly enhancing the therapeutic effect of sonodynamic therapy and evidently inhibiting tumor growth and metastasis. Overall, this DNA nanoflowers delivery system offers a promising approach for treating lung cancer.

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