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• W4386469710 abstract "The tumor microenvironment (TME) of breast cancer is hypoxic, which can promote tumor progression, including invasion and metastasis, and limit the efficacy of anti-tumor treatment. Nitric oxide (NO) can dilate blood vessels, effectively alleviate hypoxia, and regulate the TME, which has the potential to improve the anti-tumor therapeutic efficacy. Here, chitosan (CO) and octadecylamine (ODA) were linked by the disulfide bond, and the LinTT1 peptide was linked onto CO–SS–ODA for targeting tumor cells and endothelial cells in tumors. The NO donor S-nitroso-N-acetylpenicillamine (SNAP) was connected to CO. Doxorubicin (DOX) was encapsulated, and GSH hierarchically responsive polymer micelles (TSCO–SS–ODA/DOX) were constructed for the treatment of breast cancer. The micelles had differently responsive drug release in different GSH concentrations. In endothelial cells, the micelles rapidly responded to release NO. In tumor cells, the disulfide bond rapidly broke and released DOX to effectively kill tumor cells. The disulfide bond was not sensitive to GSH concentration in endothelial cells, which had less release of DOX. The killing effect of the micelles to endothelial cells was much lower than that to tumor cells. The cell selective drug release of the drug delivery systems enabled safe and effective treatment of drugs. TSCO–SS–ODA/DOX, which had the excellent ability to target tumors, can alleviate tumor hypoxia, decrease the infiltration of M2 macrophages in tumors, increase the infiltration of M1 macrophages in tumors, and remodel the TME. Notably, TSCO–SS–ODA/DOX can significantly inhibit the growth of the primary tumor and effectively inhibit tumor metastasis. The drug delivery system provided a potential solution for effectively treating breast cancer." @default.
• W4386469710 created "2023-09-07" @default.
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• W4386469710 date "2023-09-06" @default.
• W4386469710 modified "2023-09-27" @default.
• W4386469710 title "GSH-Responsive Polymeric Micelles for Remodeling the Tumor Microenvironment to Improve Chemotherapy and Inhibit Metastasis in Breast Cancer" @default.
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• W4386469710 doi "https://doi.org/10.1021/acs.biomac.3c00523" @default.
• W4386469710 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37672635" @default.
• W4386469710 hasPublicationYear "2023" @default.
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