光动力疗法
光敏剂
氯
褐藻糖胶
化学
癌症研究
活性氧
生物物理学
医学
多糖
生物化学
光化学
生物
有机化学
作者
Seongryeong Han,Eunjin Jeong,Seo Young Cheon,Dong-Hyun Lee,Yeeun Lee,Song Yi Lee,Hyun‐Jong Cho,Heebeom Koo
标识
DOI:10.1016/j.ijbiomac.2022.10.254
摘要
Efficient delivery of a photosensitizer (PS) and oxygen to tumor tissue is critical for successful photodynamic therapy (PDT). For this purpose, we developed a fucoidan (Fu)-chlorin e6 (Ce6) nanoparticle (NP) containing perfluorooctylbromide (PFOB). Fu, a biopolymer derived from seaweed, made up the hydrophilic shell of the NP and provided specific targeting to tumor cells by P-selectin binding. Conjugation with the hydrophobic Ce6 enabled self-assembly and Ce6-generated cytotoxic reactive oxygen species to kill tumor cells upon laser irradiation. PF supplied oxygen to the hypoxic tumor tissue and increased the efficacy of the PDT. The developed Fu-Ce6-PF-NPs bound specifically to SCC7 tumor cells and killed them via a photodynamic effect on laser irradiation. High accumulation of the NPs in tumor tissue and improved tumor suppression by PDT were observed in SCC7 tumor-bearing mice. The overall data demonstrated the potential of Fu-Ce6-PF-NP as a tumor-targeting drug carrier for effective PDT.
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