金纳米棒诱导的温和光热效应双管齐下逆转化疗耐药性

IF 6.1 2区 医学 Q1 ENGINEERING, BIOMEDICAL Bioengineering & Translational Medicine Pub Date : 2024-04-18 DOI:10.1002/btm2.10670
Qi Shang, Ziyan Chen, Jing Li, Mingmei Guo, Jiapei Yang, Zhu Jin, Yuanyuan Shen, Shengrong Guo, Feihu Wang
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引用次数: 0

摘要

多药耐药性(MDR)严重制约了化疗的疗效,肿瘤产生的多重交叉耐药性涉及泵和非泵耐药机制,导致药物外流并抵御药物毒性。在此,我们构建了一种基于金纳米棒(GNRs)的pH和近红外(NIR)光响应纳米药物DOX@FG,该药物具有克服MDR改善化疗效果的潜力。DOX@FG 是通过将叶酸(FA)和多柔比星(DOX)衍生物共轭到 GNRs 上而构建的,其中 DOX 衍生物具有酸性惰性腙键。在内细胞器的酸性介质刺激下,DOX@FG 表现出反应性解离,从而实现了化疗 DOX 的控制释放。令人惊奇的是,我们发现在近红外照射下,GNRs 引发的温和光热效应同时抑制了泵和非泵抗性机制,增强了细胞内 DOX 的积累,并使癌细胞对 DOX 敏感,从而共同放大了化疗疗效,延缓了 MCF-7/ADR 乳腺肿瘤的生长。这种智能型 DOX@FG 纳米药物具有双管齐下逆转 MDR 的潜力,可为提高化疗疗效提供一种前瞻性的途径。
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Two-pronged reversal of chemotherapy resistance by gold nanorods induced mild photothermal effect

Chemotherapy treatment outcomes are severely restricted by multidrug resistance (MDR), in which tumors develop a multiple cross-resistance toward drug involving the pump and nonpump resistance mechanisms, resulting in drug efflux and defending against drug toxicity. Herein, we constructed a pH and near infrared (NIR) light responsive nanomedicine DOX@FG based on gold nanorods (GNRs) that demonstrated the potential to improve chemotherapy outcomes by overcoming MDR. DOX@FG was constructed by conjugating folic acid (FA) and doxorubicin (DOX) derivatives onto GNRs, where the DOX derivatives possessed an acid-labile hydrazone bond. Stimulated by the acidic media in endocytic organelles, DOX@FG exhibited a responsive dissociation for the controlled release of chemotherapeutic DOX. Surprisingly, we found the mild photothermal effect elicited by GNRs under NIR irradiation simultaneously inhibited the pump and nonpump resistance mechanisms, enhancing the intracellular DOX accumulation and sensitizing the cancer cells to DOX, collectively amplify the chemotherapy efficacy and delay the MCF-7/ADR breast tumor growth. This intelligent DOX@FG nanomedicine with the potential for two-pronged reversal of MDR may provide a prospective way to encourage chemotherapy efficacy.

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来源期刊
Bioengineering & Translational Medicine
Bioengineering & Translational Medicine Pharmacology, Toxicology and Pharmaceutics-Pharmaceutical Science
CiteScore
8.40
自引率
4.10%
发文量
150
审稿时长
12 weeks
期刊介绍: Bioengineering & Translational Medicine, an official, peer-reviewed online open-access journal of the American Institute of Chemical Engineers (AIChE) and the Society for Biological Engineering (SBE), focuses on how chemical and biological engineering approaches drive innovative technologies and solutions that impact clinical practice and commercial healthcare products.
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