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Zhang JA, Haddleton D, Wilson P, Zhu LH, Dai CY, Zhao LL. pH-Responsive Amphiphilic Triblock Fluoropolymers as Assemble Oxygen Nanoshuttles for Enhancing PDT against Hypoxic Tumor. Bioconjug Chem 2024; 35:400-411. [PMID: 38366969 DOI: 10.1021/acs.bioconjchem.4c00029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2024]
Abstract
Photodynamic therapy (PDT) is a cancer treatment strategy that utilizes photosensitizers to convert oxygen within tumors into reactive singlet oxygen (1O2) to lyse tumor cells. Nevertheless, pre-existing tumor hypoxia and oxygen consumption during PDT can lead to an insufficient oxygen supply, potentially reducing the photodynamic efficacy. In response to this issue, we have devised a pH-responsive amphiphilic triblock fluorinated polymer (PDP) using copper-mediated RDRP. This polymer, composed of poly(ethylene glycol) methyl ether acrylate, 2-(diethylamino)ethyl methacrylate, and (perfluorooctyl)ethyl acrylate, self-assembles in an aqueous environment. Oxygen, chlorine e6 (Ce6), and doxorubicin (DOX) can be codelivered efficiently by PDP. The incorporation of perfluorocarbon into the formulation enhances the oxygen-carrying capacity of PDP, consequently extending the lifetime of 1O2. This increased lifetime, in turn, amplifies the PDT effect and escalates the cellular cytotoxicity. Compared with PDT alone, PDP@Ce6-DOX-O2 NPs demonstrated significant inhibition of tumor growth. This study proposes a novel strategy for enhancing the efficacy of PDT.
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Affiliation(s)
- Jun-An Zhang
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan 571158, China
| | - David Haddleton
- Department of Chemistry, Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
| | - Paul Wilson
- Department of Chemistry, Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
| | - Lin-Hua Zhu
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan 571158, China
- Department of Chemistry, Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
- Key Laboratory of Functional Organic Polymers of Haikou, Tropical Functional Polymer Materials Engineering Research Center of Hainan, Haikou 571158, China
| | - Chun-Yan Dai
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan 571158, China
- Department of Chemistry, Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
- Key Laboratory of Functional Organic Polymers of Haikou, Tropical Functional Polymer Materials Engineering Research Center of Hainan, Haikou 571158, China
| | - Lin-Lu Zhao
- College of Emergency and Trauma, Hainan Medical University, Haikou 571199, China
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