期刊
BIOMATERIALS
卷 232, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biomaterials.2019.119709
关键词
Nanotheranostics; Melanin coated magnetic nanoparticles; Obatoclax; Mild hyperthermia; Wnt/beta-catenin signaling pathway
资金
- National Natural Science Foundation of China [51703132, 51573096]
- Basic Research Program of Shenzhen [JCYJ20180507182413022, JCYJ20160422091238319]
- National Key Research and Development Program [2018YFA0704003]
- Guangdong Province Natural Science Foundation of Major Basic Research and Cultivation Project [2018B030308003]
- Fok Ying-Tong Education Foundation for Young Teachers in the Higher Education Institutions of China [161032]
Wnt/beta-catenin signaling cascade is highly associated with tumorigenesis and progression of various cancers. Targeting Wnt/beta-catenin signaling exhibits a promising way for cancer treatment. Herein, dual-stimuli responsive nanotheranostics was synthesized, which was composed of melanin coated magnetic nanoparticles (MMNs) and Wnt signaling inhibitor obatoclax (OBX) for multimodality imaging guided mild hyperthermia-enhanced chemotherapy. The MMNs could be used as contrast agents for magnetic resonance imaging (MRI) and photoacoustic imaging (PAI) guided photothermal therapy. In addition, OBX-loaded MMNs (OBX-MMNs) were specific response to both pH changes and near-infrared (NIR) light illumination, which could trigger OBX release. Most intriguingly, tumor tissue accumulation and cellular intemalization of this nanotheranostics could be dramatically enhanced through mild hyperthermia generated by laser-irradiated MMNs. Laser irradiation exhibited efficient chemotherapeutic outcome through enhancing OBX-mediated inhibition of the Wnt/beta-catenin signaling. Our results indicated the as-prepared OBX-MMNs hold great potential for MR/PA dual-modal imaging guided mild hyperthermia-enhanced chemotherapy.
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