Therapeutic Vesicular Nanoreactors with Tumor‐Specific Activation and Self‐Destruction for Synergistic Tumor Ablation. (4th October 2017)

• Record Type: Journal Article
• Authors: Li, Junjie; Dirisala, Anjaneyulu; Ge, Zhishen; Wang, Yuheng; Yin, Wei; Ke, Wendong; Toh, Kazuko; Xie, Jinbing; Matsumoto, Yu; Anraku, Yasutaka; Osada, Kensuke; Kataoka, Kazunori
• Is Part Of: Angewandte Chemie. Volume 129:Number 45(2017)
• Page Start: 14213
• Page End: 14218
• Publication Date: 2017-10-04
• Subjects: Enzymtransport -- Krebstherapie -- Membranpermeabilität -- Nanoreaktoren -- Polymersome; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201706964
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Polymeric nanoreactors (NRs) have distinct advantages to improve chemical reaction efficiency, but the in vivo applications are limited by lack of tissue‐specificity. Herein, novel glucose oxidase (GOD)‐loaded therapeutic vesicular NRs ( thera NR) are constructed based on a diblock copolymer containing poly(ethylene glycol) (PEG) and copolymerized phenylboronic ester or piperidine‐functionalized methacrylate (P(PBEM‐ co ‐PEM)). Upon systemic injection, thera NR are inactive in normal tissues. At a tumor site, thera NR are specifically activated by the tumor acidity via improved permeability of the membranes. Hydrogen peroxide (H2 O2 ) production by the catalysis of GOD in thera NR increases tumor oxidative stress significantly. Meanwhile, high levels of H2 O2 induce self‐destruction of thera NR releasing quinone methide (QM) to deplete glutathione and suppress the antioxidant ability of cancer cells. Finally, thera NR efficiently kill cancer cells and ablate tumors via the synergistic effect.