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Break-up Of Two-dimensional MnO2 Nanosheets Promotes Ultrasensitive PH-triggered Theranostics Of Cancer.

Y. Chen, D. Ye, M. Wu, H. Chen, Lin-lin Zhang, Jianlin Shi, L. Wang
Published 2014 · Materials Science, Medicine

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Chemically exfoliated two-dimensional MnO2 nanosheets are successfully modified with amino-polyethylene glycol as a theranostic platform for ultrasensitive stimuli-responsive theranostics of cancer. The highly dispersed MnO2 nanosheets exhibit a unique break-up in the mildly acidic microenvironment of tumor tissues, which could substantially enhance their in vitro and in vivo performances in T1 -weighted magnetic resonance imaging. Such a pH-triggered breaking-up behavior could further promote the fast release of loaded anticancer drugs for concurrent pH-responsive drug release and circumvent the multidrug resistance of cancer cells.
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