Affiliation:
1. School of Biomedical Engineering Anhui Medical University Hefei 230032 P. R. China
2. School of Pharmacy Anhui Medical University Hefei 230032 P. R. China
3. School of Public Health Anhui Medical University Hefei 230032 P. R. China
Abstract
AbstractThe development of nanomedicines that combine photothermal therapy (PTT) with photodynamic therapy (PDT) is considered promising for cancer treatment, but still faces the challenge of enhancing tumoricidal efficiency. Fortunately, apart from the well‐acknowledged effect on direct tumor cell‐killing, nitric oxide (NO) is also considered to be effective for the enhancement of both PTT and PDT. However, both the low loading efficiency of NO precursor and the short half‐life time and diffusion distance of NO hamper the synergistic therapeutic efficacy of NO. Taking the aforementioned factors into account, a mitochondria‐targeted nitric oxide nanogenerator, EArgFe@Ce6, is constructed to achieve high loading of the NO donorl‐Arginine (l‐Arg) for synergistic photodynamic/gas/photothermal therapy upon single 660 nm light irradiation. The coordination of epigallocatechin gallate (EGCG) and ferric ions (Fe3+) provides EArgFe@Ce6 supreme photothermal capability to perform low‐temperature PTT (mPTT). EGCG endows EArgFe@Ce6 with mitochondria‐targeting capability and meanwhile favors hypoxia alleviation for enhanced PDT. The PDT‐produced massive reactive oxygen species (ROS) further catalyzesl‐Arg to generate a considerable amount of NO to perform gas therapy and sensitize both mPTT and PDT. In vitro and in vivo studies demonstrate that the synergistic photodynamic/gas/photothermal therapy triggered by single 660 nm light irradiation is highly effective for tumor treatments.
Funder
National Natural Science Foundation of China
Anhui Medical University
Subject
Pharmaceutical Science,Biomedical Engineering,Biomaterials
Cited by
10 articles.
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