过氧化氢
胶体金
化学发光
纳米颗粒
化学
光热效应
生物医学中的光声成像
甲基丙烯酸
光热治疗
组合化学
材料科学
鲁米诺
纳米技术
生物化学
聚合物
有机化学
物理
单体
光学
作者
Qiulian Mao,Jing Fang,Anna Wang,Yuqi Zhang,Chaoxiang Cui,Shuyue Ye,Yan Zhao,Yali Feng,Jiachen Li,Haibin Shi
标识
DOI:10.1002/ange.202109863
摘要
Developing endogenous photo-activated theranostic platforms to overcome the limitation of low tissue-penetration from external light sources is highly significant for cancer diagnosis and treatment. We report a H2O2-initiated chemiluminescence (CL)-triggered nanoparticle aggregation strategy to activate theranostic functions of gold nanoparticles (AuNPs) for effective tumor imaging and therapy. Two types of AuNPs (tAuNP & mAuNP) were designed and fabricated by conjugating 2,5-diphenyltetrazole and methacrylic acid onto the surface of AuNPs, respectively. Luminol was adsorbed onto the mAuNPs to afford self-illuminating mAuNP/Lu NPs that could produce strong CL by reaction with H2O2 in the tumor microenvironment, which triggers significant aggregation of AuNPs resulting in enhanced accumulation and retention of AuNPs for activated photoacoustic imaging and photothermal therapy of tumors. We thus believe that this approach may offer a promising tool for effective tumor treatment.
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