Single cell transfection by laser-induced breakdown of an optically trapped gold nanoparticle

Yoshihiko Arita*, Martin Ploschner, Maciej Antkowiak, Frank Gunn-Moore, Kishan Dholakia

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)
7 Downloads (Pure)

Abstract

Cell selective introduction of therapeutic agents remains a challenging problem. Cavitation-based therapies including ultrasound-induced sonoporation and laser-induced optoporation have led the way for novel approaches to provide the potential of sterility and cell selectivity compared with viral or biochemical counterparts. Acoustic streaming, shockwaves and liquid microjets associated with the cavitation dynamics are implicated in gene and drug delivery. These approaches, however, often lead to non-uniform and sporadic molecular uptake that lacks refined spatial control and suffers from a significant loss of cell viability. Here we demonstrate spatially controlled cavitation instigated by laser-induced breakdown of an optically trapped single gold nanoparticle. Our unique approach employs optical tweezers to trap a single nanoparticle, which when irradiated by a nanosecond laser pulse is subject to laser-induced breakdown followed by cavitation. Using this method for laser-induced cavitation, we can gain additional degrees of freedom for the cavitation process the particle material, its size, and its position relative to cells or tissues. We show the energy breakdown threshold of gold nanoparticles of 100nm with a single nanosecond laser pulse at 532 nm is three orders of magnitude lower than that for water, which leads to gentle nanocavitation enabling single cell transfection. We optimize the shear stress to the cells from the expanding bubble to be in the range of 1-10 kPa for transfection by precisely positioning a trapped gold nanoparticle, and thus nanobubble, relative to a cell of interest. The method shows transfection of plasmid-DNA into individual mammalian cells with an efficiency of 75%.

Original languageEnglish
Title of host publicationFrontiers in Ultrafast Optics
Subtitle of host publicationBiomedical, Scientific, and Industrial Applications XIV
EditorsA Heisterkamp, PR Herman, M Meunier, S Nolte
Place of PublicationBellingham
PublisherSPIE
Number of pages7
Volume8972
DOIs
Publication statusPublished - 7 Mar 2014
EventConference on Frontiers in Ultrafast Optics - Biomedical, Scientific, and Industrial Applications XIV - San Francisco, Canada
Duration: 2 Feb 20145 Feb 2014

Publication series

NameProceedings of SPIE
PublisherSPIE-The International Society for Optical Engineering
Volume8972
ISSN (Print)0277-786X

Conference

ConferenceConference on Frontiers in Ultrafast Optics - Biomedical, Scientific, and Industrial Applications XIV
Country/TerritoryCanada
Period2/02/145/02/14

Keywords

  • Laser-induced breakdown
  • Laser trapping
  • Ultrasound
  • Surface plasmons
  • LYSIS

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