Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 21, Pages 6880-6885Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201812972
Keywords
bioimaging; cancer therapy; gadolinium oxide; lanthanides; ultrathin structure
Categories
Funding
- NSFC [21522106, 51502237, 51872224]
- National Key R&D Program of China [2017YFA0208000]
- 111 Project from China [B18030]
- CFN at Brookhaven National Laboratory [DE-SC0012704]
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The development of biodegradable inorganic nanoparticles with a tumor microenvironment-activated therapeutic mode of action is urgently needed for precision cancer medicine. Herein, the synthesis of ultrathin lanthanide nanoscrolls (Gd2O3 NSs) is reported, which biodegrade upon encountering the tumor microenvironment. The Gd2O3 NSs showed highly controlled magnetic properties, which enabled their high-resolution magnetic resonance imaging (MRI). Importantly, Gd2O3 NSs degrade in a pH-responsive manner and selectively penetrate tumor tissue, enabling the targeted release of anti-cancer drugs. Gd2O3 NSs can be efficiently loaded with an anti-cancer drug (DOX, 80%) and significantly inhibit tumor growth with negligible cellular and tissue toxicity both invitro and invivo. This study may provide a novel strategy to design tumor microenvironment-responsive inorganic nanomaterials for biocompatible bioimaging and biodegradation-enhanced cancer therapy.
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