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A Logic-Gated Modular Nanovesicle Enables Programmable Drug Release for On-Demand Chemotherapy.


ABSTRACT: It remains a major challenge to achieve precise on-demand drug release. Here, we developed a modular nanomedicine integrated with logic-gated system enabling programmable drug release for on-demand chemotherapy. Methods: We employed two different logical AND gates consisting of four interrelated moieties to construct the nanovesicles, denoted as v-A-CED2, containing oxidation-responsive nanovesicles (v), radical generators (A), and Edman linker conjugated prodrugs (CED2). The first AND logic gate is connected in parallel by mild hyperthermia ( I ) and acidic pH ( II ), which executes NIR laser triggered prodrug-to-drug transformation through Edman degradation. Meanwhile, the mild hyperthermia effect triggers alkyl radical generation ( III ) which contributes to internal oxidation and degradation of nanovesicles ( IV ). The second AND logic gate is therefore formed by the combination of I-IV to achieve programmable drug release by a single stimulus input NIR laser. The biodistribution of the nanovesicles was monitored by positron emission tomography (PET), photoacoustic, and fluorescence imaging. Results: The developed modular nanovesicles exhibited high tumor accumulation and effective anticancer effects both in vitro and in vivo. Conclusions: This study provides a novel paradigm of logic-gated programmable drug release system by a modular nanovesicle, which may shed light on innovation of anticancer agents and strategies.

SUBMITTER: Tang L 

PROVIDER: S-EPMC6401502 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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A Logic-Gated Modular Nanovesicle Enables Programmable Drug Release for On-Demand Chemotherapy.

Tang Longguang L   Yang Zhen Z   Zhou Zijian Z   Ma Ying Y   Kiesewetter Dale O DO   Wang Zhantong Z   Fan Wenpei W   Zhu Shoujun S   Zhang Mingru M   Tian Rui R   Lang Lixin L   Niu Gang G   Zhang Xianzhong X   Chen Xiaoyuan X  

Theranostics 20190214 5


It remains a major challenge to achieve precise on-demand drug release. Here, we developed a modular nanomedicine integrated with logic-gated system enabling programmable drug release for on-demand chemotherapy. <b>Methods:</b> We employed two different logical AND gates consisting of four interrelated moieties to construct the nanovesicles, denoted as v-A-CED<sub>2</sub>, containing oxidation-responsive nanovesicles (v), radical generators (A), and Edman linker conjugated prodrugs (CED<sub>2</s  ...[more]

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