Ultrasound-Mediated Cavitation-Enhanced Extravasation of Mesoporous Silica Nanoparticles for Controlled-Release Drug Delivery



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Paris, J.L. and Mannaris, Christophoros and Cabañas Criado, Victoria and Carlisle, Robert and Manzano García, Miguel and Vallet Regí, María and Coussios, Constantin C. (2017) Ultrasound-Mediated Cavitation-Enhanced Extravasation of Mesoporous Silica Nanoparticles for Controlled-Release Drug Delivery. Chemical Engineering Journal . ISSN 1385-8947

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Official URL: https://www.elsevier.com/


Mesoporous silica nanoparticles have been reported as suitable drug carriers, but their successful delivery to target tissues following systemic administration remains a challenge. In the present work, ultrasound-induced inertial cavitation was evaluated as a mechanism to promote their extravasation in a flow-through tissue mimicking agarose phantom. Two different ultrasound frequencies, 0.5 or 1.6 MHz, with pressures in the range 0.5-4 MPa were used to drive cavitation activity which was detected in real time. The optimal ultrasound conditions identified were employed to deliver dye-loaded nanoparticles as a model for drug-loaded nanocarriers, with the level of extravasation evaluated by fluorescence microscopy. The same nanoparticles were then co-injected with submicrometric polymeric cavitation nuclei as a means to promote cavitation activity and decrease the required in-situ acoustic pressure required to attain extravasation. The overall cavitation energy and penetration of the combination was compared to mesoporous silica nanoparticles alone. The results of the present work suggest that combining mesoporous silica nanocarriers and submcrometric cavitation nuclei may help enhance the extravasation of the nanocarrier, thus enabling subsequent sustained drug release to happen from those particles already embedded in the tumour tissue.

Item Type:Article
Additional Information:

RESEARCHER ID D-9318-2017 (Juan Luis Paris de la Fuente)
ORCID 0000-0001-8950-283X (Juan Luis Paris de la Fuente)
RESEARCHER ID G-8740-2015 (María Victoria Cabañas Criado)
ORCID 0000-0002-4753-5665 (María Victoria Cabañas Criado)
RESEARCHER ID K-3719-2014 (Miguel Manzano García)
RESEARCHER ID M-3378-2014 (María Vallet Regí)
ORCID 0000-0002-6104-4889 (María Vallet Regí)
ORCID 0000-0001-6238-6111 (Miguel Manzano García)

Uncontrolled Keywords:Extravasation, Nanoparticle Delivery, Cavitation, Mesoporous Silica Nanoparticles
Subjects:Sciences > Chemistry > Materials
Medical sciences > Pharmacy > Inorganic chemistry
Medical sciences > Pharmacy > Pharmaceutical technology
ID Code:45946
Deposited On:13 Feb 2018 09:43
Last Modified:13 Dec 2019 00:01

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