A Biomimetic Nanoreactor for Synergistic Chemiexcited Photodynamic Therapy and Starvation Therapy Against Tumor Metastasis

Overview

Journal Nat Commun

Specialty Biology

Date 2018 Nov 30

PMID 30487569

Citations 86

Authors

Zhengze Yu

Ping Zhou

Wei Pan

Na Li

Bo Tang

Affiliations

Soon will be listed here.

Abstract

Photodynamic therapy (PDT) is ineffective against deeply seated metastatic tumors due to poor penetration of the excitation light. Herein, we developed a biomimetic nanoreactor (bio-NR) to achieve synergistic chemiexcited photodynamic-starvation therapy against tumor metastasis. Photosensitizers on the hollow mesoporous silica nanoparticles (HMSNs) are excited by chemical energy in situ of the deep metastatic tumor to generate singlet oxygen (O) for PDT, and glucose oxidase (GOx) catalyzes glucose into hydrogen peroxide (HO). Remarkably, this process not only blocks the nutrient supply for starvation therapy but also provides HO to synergistically enhance PDT. Cancer cell membrane coating endows the nanoparticle with biological properties of homologous adhesion and immune escape. Thus, bio-NRs can effectively convert the glucose into O in metastatic tumors. The excellent therapeutic effects of bio-NRs in vitro and in vivo indicate their great potential for cancer metastasis therapy.

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