Sequential Intra-Intercellular Delivery of Nanomedicine for Deep Drug-Resistant Solid Tumor Penetration.

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ID: 92519
2020
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Ranked #111 of 899 articles by views in ACS applied materials & interfaces

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Abstract
Cells in the center of solid tumors have always been an abyss untouched by treatments because of their deep location and increased drug resistance. Herein, we designed a rational strategy for sequential intra-intercellular delivery of nanomedicine to deep sites of drug-resistant solid tumors. In our formulation, dopamine and hemoglobin were polymerized to form a smart nanocarrier (PDA/Hb). Subsequently, the doxorubicin and nitric oxide donor were connected on the surface of PDA/Hb to obtain D/N-PDA/Hb. Ultimately, the hyaluronic acid was combined on the D/N-PDA/Hb to form resultant D/N-PDA/Hb@HA. Concretely, acidic and neutral environments of tumor cells were treated as a switch to turn on or off the drug release of nanodrug. Meanwhile, the generation of nitric oxide in situ was exploited to favor the lysosomal escape of nanocarriers and overcome the drug resistance of deep solid tumor cells. The results indicated that the nanodrug based on sequential intra-intercellular delivery showed exciting penetration efficiency and resistant reversal of solid tumors. Conventional nanodrug delivery was dependent on EPR effect overly and limited by tumorous interstitial fluid pressure extremely. Plenty of drugs stayed on the surface of solid tumors, and the infiltrated drugs were inefficient due to strict resistance. To conquer this dilemma, this work proposed a new mechanism reversing the EPR effect for drug delivery, leading to better penetration and resistance reversal of solid tumors.
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he2020sequentialacs Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors He, Yuchu;Cong, Cong;Li, Lei;Luo, Liyao;He, Yaqian;Hao, Zining;Gao, Dawei;
Journal ACS applied materials & interfaces
Year 2020
DOI
10.1021/acsami.9b20062
URL
Keywords
inhaled corticosteroids exhaled nitric oxide bronchial asthma

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