NIR-Activated Polydopamine-Coated Carrier-Free "Nanobomb" for In Situ On-Demand Drug Release.
NIR-Activated Polydopamine-Coated Carrier-Free "Nanobomb" for In Situ On-Demand Drug Release.
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近红外激活聚多巴胺涂层无载体“纳米炸弹”用于原位按需药物释放
DOI:
10.1002/advs.201800155
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发表时间:
2018-07
期刊:
影响因子:
--
通讯作者:
Liu W
中科院分区:
文献类型:
--
作者:
Li M;Sun X;Zhang N;Wang W;Yang Y;Jia H;Liu W
Carrier‐free nanoparticles with high drug loading have attracted increasing attention; however, in situ on‐demand drug release remains a challenge. Here, a novel near‐infrared (NIR) laser‐induced blasting carrier‐free nanodrug delivery system is designed and fabricated by coating doxorubicin (DOX) nanoparticles (DNPs) with a polydopamine film (PDA) that would prolong the blood circulation time of DNPs and avoid the preleakage of the DOX during blood circulation. Meanwhile, the NH4HCO3 is introduced to trigger in situ “bomb‐like” release of DOX for the production of carbon dioxide (CO2) and ammonia (NH3) gases driven by NIR irradiated photothermal effect of PDA. Both in vitro and in vivo studies demonstrate that the carrier‐free nanovectors with high drug loading efficiency (85.8%) prolong tumor accumulation, enhance chemotherapy, achieve the synergistic treatment of chemotherapy and photothermal treatment, and do not induce any foreign‐body reaction over a three‐week implantation. Hence, the delicate design opens a self‐assembly path to develop PDA‐based NIR‐responsive multifunctional carrier‐free nanoparticles for tumor therapy.
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