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Engineering Metal–Organic Frameworks for Photoacoustic Imaging-Guided Chemo-/Photothermal Combinational Tumor Therapy

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journal contribution
posted on 07.11.2018, 00:00 by Ying Zhang, Lei Wang, Liang Liu, Lin Lin, Feng Liu, Zhigang Xie, Huayu Tian, Xuesi Chen
Imaging-guided therapy has considerable potential in tumor treatment. Different treatments have been integrated to realize combinational tumor therapy with improved therapeutic efficiency. Herein, the conventional metal–organic framework (MOF) MIL-100 is utilized to load curcumin with excellent encapsulation capacity. Polydopamine-modified hyaluronic acid (HA-PDA) is coated on the MIL-100 surface to construct engineering MOF nanoparticles (MCH NPs). The HA-PDA coating not only improves the dispersibility and stability of NPs but also introduces a tumor-targeting ability to this nanosystem. A two-stage augmented photothermal conversion capability is introduced to this nanosystem by encapsulating curcumin in MIL-100 pores and then coating HA-PDA on the surface, which confer the MCH NPs with strong photothermal conversional efficiency. After being intravenously injected into xenograft HeLa tumor-bearing mice, MCH NPs prefer to accumulate at the tumor site and achieve photoacoustic imaging-guided chemo-/photothermal combinational tumor therapy, generating nearly complete tumor ablation. Engineering MOFs is an efficient platform for imaging-guided combinational tumor therapy, as confirmed by in vitro and in vivo evaluations.