A Theranostic Nanoprobe for Hypoxia Imaging and Photodynamic Tumor Therapy

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Abstract

Hypoxia is a common feature for most malignant tumors, which was also closely related to the oxygen-dependent photodynamic therapy. Based on Förster resonance energy transfer (FRET), a smart nanoprobe (designated as H-Probe) was designed in this paper for hypoxia imaging and photodynamic tumor therapy. Due to the FRET process, H-Probe could respond to hypoxia with a significant fluorescence recovery. Moreover, abundant in vitro investigations demonstrated that the photosensitizer of PpIX in H-Probe could generate large amounts of singlet oxygen to kill cancer cells in the presence of oxygen and light with appropriate wavelength. Also, intravenously injected H-Probe with light irradiation achieved an effective tumor inhibition in vivo with a reduced side effect. This original strategy of integrating hypoxia imaging and tumor therapy in one nanoplatform would promote the development of theranostic nanoplatform for tumor precision therapy.

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Fan, J. H., Fan, G. L., Yuan, P., Deng, F. A., Liu, L. S., Zhou, X., … Li, S. Y. (2019). A Theranostic Nanoprobe for Hypoxia Imaging and Photodynamic Tumor Therapy. Frontiers in Chemistry, 7. https://doi.org/10.3389/fchem.2019.00868

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