Controlled and Tunable Loading and Release of Vesicles by Using Gigahertz Acoustics

Yao Lu, Wilke C. de Vries, Nico J. Overeem, Xuexin Duan*, Hongxiang Zhang, Hao Zhang, Wei Pang, Bart Jan Ravoo*, Jurriaan Huskens*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)
16 Downloads (Pure)

Abstract

Controllable exchange of molecules between the interior and the external environment of vesicles is critical in drug delivery and micro/nano-reactors. While many approaches exist to trigger release from vesicles, controlled loading remains a challenge. Herein, we show that gigahertz acoustic streaming generated by a nanoelectromechanical resonator can control the loading and release of cargo into and from vesicles. Polymer-shelled vesicles showed loading and release of molecules both in solution and on a solid substrate. We observed deformation of individual giant unilamellar vesicles and propose that the shear stress generated by gigahertz acoustic streaming induces the formation of transient nanopores, with diameters on the order of 100 nm, in the vesicle membranes. This provides a non-invasive method to control material exchange across membranes of different types of vesicles, which could allow site-specific release of therapeutics and controlled loading into cells, as well as tunable microreactors.

Original languageEnglish
Pages (from-to)159-163
Number of pages5
JournalAngewandte Chemie - International Edition
Volume58
Issue number1
Early online date12 Nov 2018
DOIs
Publication statusPublished - 2 Jan 2019

Keywords

  • Ultrasound
  • controlled release
  • gigahertz acoustic streaming
  • transient nanopores
  • vesicles
  • controlled loading

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