An orthogonally regulatable DNA nanodevice for spatiotemporally controlled biorecognition and tumor treatment

Zhenghan Di, Bei Liu, Jian Zhao, Zhanjun Gu, Yuliang Zhao, Lele Li

Research output: Contribution to journalArticlepeer-review

114 Scopus citations

Abstract

Despite the potential of nanodevices for intelligent drug delivery, it remains challenging to develop controllable therapeutic devices with high spatial-temporal selectivity. Here, we report a DNA nanodevice that can achieve tumor recognition and treatment with improved spatiotemporal precision under the regulation of orthogonal near-infrared (NIR) light. The nanodevice is built by combining an ultraviolet (UV) light-activatable aptamer module and a photosensitizer (PS) with up-conversion nanoparticle (UCNP) that enables the operation of the nanodevice with deep tissue-penetrable NIR light. The UCNPs can convert two distinct NIR excitations into orthogonal UV and green emissions for programmable photoactivation of the aptamer modules and PSs, respectively, allowing spatiotemporally controlled target recognition and photodynamic antitumor effect. Furthermore, when combined with immune checkpoint blockade therapy, the nanodevice results in regression of untreated distant tumors. This work provides a new approach for regulation of diagnostic and therapeutic activity at the right time and place.

Original languageEnglish (US)
Article numbereaba9381
JournalScience Advances
Volume6
Issue number25
DOIs
StatePublished - Jun 2020

ASJC Scopus subject areas

  • General

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