Journal
ADVANCED SCIENCE
Volume 6, Issue 17, Pages -Publisher
WILEY
DOI: 10.1002/advs.201901378
Keywords
carbon nanostructures; photodynamic therapy; photothermal therapy; thrombus
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Although near-infrared (NIR)-light-mediated photothermal thrombolysis has been investigated to overcome the bleeding risk of clinical clot-busting agents, the secondary embolism of post-phototherapy fragments (>10 mu m) for small vessels should not be ignored in this process. In this study, dual-modality photothermal/photodynamic thrombolysis is explored using targeting nanoagents with an emphasis on improving biosafety as well as ameliorating the thrombolytic effect. The nanoagents can actively target glycoprotein IIb/IIIa receptors on thrombus to initiate site-specific thrombolysis by hyperthermia and reactive oxygen species under NIR laser irradiation. In comparison to single photothermal thrombolysis, an 87.9% higher re-establishment rate of dual-modality photothermal/photodynamic thrombolysis by one-time treatment is achieved in a lower limb thrombosis model. The dual-modality thrombolysis can also avoid re-embolization after breaking fibrin into tiny fragments. All the results show that this strategy is a safe and validated protocol for thrombolysis, which fits the clinical translational trend of nanomedicine.
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