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一种新型瞬时自组装的中空 MOF 衍生纳米药物用于三阴性乳腺癌的微波热化疗。

A Novel Instantaneous Self-Assembled Hollow MOF-Derived Nanodrug for Microwave Thermo-Chemotherapy in Triple-Negative Breast Cancer.

机构信息

Laboratory of Controllable Preparation and Application of Nanomaterials, CAS Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.

University of Chinese Academy of Sciences, Beijing 100049, China.

出版信息

ACS Appl Mater Interfaces. 2022 Nov 23;14(46):51656-51668. doi: 10.1021/acsami.2c13561. Epub 2022 Nov 10.

Abstract

Hollow materials derived from metal-organic frameworks (MOFs) have emerged in the biomedical field due to their unique properties, and different synthesis methods have been proposed. However, so far, the large-scale use of hollow MOFs is mostly limited by the timeliness of synthesis methods. Herein, we propose a new ultrasonic aerosol flow strategy for the instantaneous synthesis of a Zr-MOF-derived hollow sphere complex (ZC-HSC) in only one step. Through rapid transient heating, the coordination between metal salts and organic ligands occurs along with prompt evaporation of the solvent. The whole process lasts for only about 21 s, compared with several steps that take hours or even days for conventional synthesis methods. Based on the ZC-HSC, we designed a nanodrug with the functions of manipulating the tumor microenvironment, which can reshape the tumor microenvironment by improving tumor hypoxia and inflammatory microenvironment and promoting antiangiogenic therapy. Combined with microwave thermo-chemotherapy, the nanodrugs effectively treat triple-negative breast cancer (the tumor cell survival rate was only 34.76 and 31.05% in normoxic and hypoxic states, respectively, and the tumor inhibition rate reached 87.9% at the animal level), providing a new theoretical basis for the treatment of triple-negative breast cancer. This rapid, one-step, and continuous ultrasonic aerosol flow strategy has bright prospects in the synthesis of MOF-derived hollow materials and promotes the further development of large-scale applications of biological nanomaterials.

摘要

由于其独特的性质,金属有机骨架(MOFs)衍生的中空材料在生物医学领域中崭露头角,并且已经提出了不同的合成方法。然而,到目前为止,中空 MOFs 的大规模应用主要受到合成方法时效性的限制。在此,我们提出了一种新的超声气溶胶流策略,用于在仅一步中瞬时合成 Zr-MOF 衍生的中空球复合物(ZC-HSC)。通过快速瞬态加热,金属盐和有机配体之间的配位伴随着溶剂的迅速蒸发而发生。整个过程仅持续约 21 秒,而传统合成方法则需要几个小时甚至几天的时间。基于 ZC-HSC,我们设计了一种具有操纵肿瘤微环境功能的纳米药物,它可以通过改善肿瘤缺氧和炎症微环境以及促进抗血管生成治疗来重塑肿瘤微环境。结合微波热化疗,纳米药物有效地治疗三阴性乳腺癌(在常氧和缺氧状态下,肿瘤细胞存活率分别仅为 34.76%和 31.05%,动物水平的肿瘤抑制率达到 87.9%),为三阴性乳腺癌的治疗提供了新的理论依据。这种快速、一步和连续的超声气溶胶流策略在 MOF 衍生中空材料的合成方面具有广阔的前景,并促进了生物纳米材料大规模应用的进一步发展。

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