| Autor: |
Mengchi Sun, Hailun Jiang, Tian Liu, Xiao Tan, Qikun Jiang, Bingjun Sun, Yulong Zheng, Gang Wang, Yang Wang, Maosheng Cheng, Zhonggui He, Jin Sun |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Acta Pharmaceutica Sinica B, Vol 12, Iss 2, Pp 952-966 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2211-3835 |
| DOI: |
10.1016/j.apsb.2021.08.008 |
| Popis: |
Substantial progress in the use of chemo-photodynamic nano-drug delivery systems (nano-DDS) for the treatment of the malignant breast cancer has been achieved. The inability to customize precise nanostructures, however, has limited the therapeutic efficacy of the prepared nano-DDS to date. Here, we report a structurally defined tandem-responsive chemo-photosensitive co-nanoassembly to eliminate primary breast tumor and prevent lung metastasis. This both-in-one co-nanoassembly is prepared by assembling a biocompatible photosensitive derivative (pheophorbide-diphenylalanine peptide, PPA-DA) with a hypoxia-activated camptothecin (CPT) prodrug [(4-nitrophenyl) formate camptothecin, N-CPT]. According to computational simulations, the co-assembly nanostructure is not the classical core-shell type, but consists of many small microphase regions. Upon exposure to a 660 nm laser, PPA-DA induce high levels of ROS production to effectively achieve the apoptosis of normoxic cancer cells. Subsequently, the hypoxia-activated N-CPT and CPT spatially penetrate deep into the hypoxic region of the tumor and suppress hypoxia-induced tumor metastasis. Benefiting from the rational design of the chemo-photodynamic both-in-one nano-DDS, these nanomedicines exhibit a promising potential in the inhibition of difficult-to-treat breast tumor metastasis in patients with breast cancer. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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