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Zinc Phthalocyanine Encapsulated in Polymer Micelles as a Potent Photosensitizer for the Photodynamic Therapy of Osteosarcoma

Zinc Phthalocyanine Encapsulated in Polymer Micelles as a Potent Photosensitizer for the Photodynamic Therapy of Osteosarcoma

Wei Yu, Mingzhou Ye, Jian Zhu, Yitian Wang, Chengzhen Liang, Jianbin Tang, Huimin Tao, Youqing Shen

Nanomedicine. 2018 Jun;14(4):1099-1110.

PMID: 29462663

Abstract:

Zinc phthalocyanine (ZnPc) is a highly potent second-generation photosensitizer for cancer photodynamic therapy (PDT) with attractive photo-physical and photo-chemical properties. However, poor solubility and strong trend of crystallization prevent it from loading in most of drug delivery systems and hamper its further application. Herein, to overcome this problem, an amphiphilic block copolymer poly(ethylene glycol)-poly[2-(methylacryloyl)ethylnicotinate] (PEG-PMAN) with aromatic nicotinate is used to load ZnPc for their π-π interactions. The formed PEG-PMAN/ZnPc nanoparticle (PPZ) dramatically increases reactive oxygen species production in osteosarcoma cells after light irradiation, causes mitochondrial injury and promotes cell cycle arrest at G2/M, leading to a 100-fold cytotoxicity improvement comparing with free ZnPc. The excellent therapeutic effectiveness and safety of PPZ are also proved by in vivo experiments operating on osteosarcoma model. The finding above indicates that PPZ has promising clinical applications as a next-generation photosensitizer in PDT of osteosarcoma.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP14320048	Zinc phthalocyanine		14320-04-8	Price

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