Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/146318
Title: Tumor‐microenvironment‐activated in situ self‐assembly of sequentially responsive biopolymer for targeted photodynamic therapy
Authors: Wang, Xuan
Li, Menghuan
Hou, Yanhua
Li, Yanan
Yao, Xuemei
Xue, Chencheng
Fei, Yang
Xiang, Yang
Cai, Kaiyong
Zhao, Yanli
Luo, Zhong
Keywords: Science::Medicine
Issue Date: 2020
Source: Wang, X., Li, M., Hou, Y., Li, Y., Yao, X., Xue, C., ... Luo, Z. (2020). Tumor‐microenvironment‐activated in situ self‐assembly of sequentially responsive biopolymer for targeted photodynamic therapy. Advanced Functional Materials, 30(40), 2000229-. doi:10.1002/adfm.202000229
Journal: Advanced Functional Materials 
Abstract: A sequentially responsive photosensitizer-integrated biopolymer is developed for tumor-specific photodynamic therapy, which is capable of forming long-retained aggregates in situ inside tumor tissues. Specifically, the photosensitizer zinc phthalocyanine (ZnPc) is conjugated with polyethylene glycol (PEG) via pH-labile maleic acid amide linker and then immobilized onto the hyaluronic acid (HA) chain using a redox-cleavable disulfide linker. The PEG segment can enhance blood circulation of the molecular carrier after intravenous administration and be shed after reaching the acidic tumor microenvironment, allowing the remaining fragment to self-assemble into large clusters in situ to avoid backward diffusion and improve tumor retention. This process is driven by hydrophobic interactions and does not require additional external actuation. The aggregates are then internalized by the tumor cells via HA-facilitated endocytosis, and the high glutathione level in tumor cells eventually leads to the intracellular release of ZnPc to facilitate its interaction with the subcellular lipid structures. This tumor-triggered morphology-based delivery platform is constructed with clinically tested components and could potentially be applied to other hydrophobic therapeutics.
URI: https://hdl.handle.net/10356/146318
ISSN: 1616-301X
DOI: 10.1002/adfm.202000229
Rights: This is the accepted version of the following article: Wang, X., Li, M., Hou, Y., Li, Y., Yao, X., Xue, C., ... Luo, Z. (2020). Tumor‐microenvironment‐activated in situ self‐assembly of sequentially responsive biopolymer for targeted photodynamic therapy. Advanced Functional Materials, 30(40), 2000229-. doi:10.1002/adfm.202000229, which has been published in final form at https://doi.org/10.1002/adfm.202000229. This article may be used for non-commercial purposes in accordance with the Wiley Self-Archiving Policy [https://authorservices.wiley.com/authorresources/Journal-Authors/licensing/self-archiving.html].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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