Gas-Stabilizing Gold Nanocones for Acoustically Mediated Drug Delivery

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

DOI

  • Christophoros Mannaris, Oxford University, Oxford, UK.
  • ,
  • Boon M. Teo
  • ,
  • Anjali Seth, Oxford University, Oxford, UK.
  • ,
  • Luca Bau, Oxford University, Oxford, UK.
  • ,
  • Constantin Coussios, Oxford University, Oxford, UK.
  • ,
  • Eleanor Stride, Oxford University, Oxford, UK.

The efficient penetration of drugs into tumors is a major challenge that remains unmet. Reported herein is a strategy to promote extravasation and enhanced penetration using inertial cavitation initiated by focused ultrasound and cone-shaped gold nanoparticles that entrap gas nanobubbles. The cones are capable of initiating inertial cavitation under pressures and frequencies achievable with existing clinical ultrasound systems and of promoting extravasation and delivery of a model large therapeutic molecule in an in vitro tissue mimicking flow phantom, achieving penetration depths in excess of 2 mm. Ease of functionalization and intrinsic imaging capabilities provide gold with significant advantages as a material for biomedical applications. The cones show neither cytotoxicity in Michigan Cancer Foundation (MCF)-7 cells nor hemolytic activity in human blood at clinically relevant concentrations and are found to be colloidally stable for at least 5 d at 37 °C and several months at 4 °C.

Original languageEnglish
Article number1800184
JournalAdvanced Healthcare Materials
Volume7
Issue12
ISSN2192-2640
DOIs
Publication statusPublished - 20 Jun 2018

    Research areas

  • cavitation, drug delivery, extravasation, nanoparticles, ultrasound

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