Molecules (Nov 2018)

Enhancements of Cancer Cell Damage Efficiencies in Photothermal and Photodynamic Processes through Cell Perforation and Preheating with Surface Plasmon Resonance of Gold Nanoring

  • Jen-Hung Hsiao,
  • Yulu He,
  • Jian-He Yu,
  • Po-Hao Tseng,
  • Wei-Hsiang Hua,
  • Meng Chun Low,
  • Yu-Hsuan Tsai,
  • Cheng-Jin Cai,
  • Cheng-Che Hsieh,
  • Yean-Woei Kiang,
  • Chih-Chung Yang,
  • Zhengxi Zhang

DOI
https://doi.org/10.3390/molecules23123157
Journal volume & issue
Vol. 23, no. 12
p. 3157

Abstract

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The methods of cell perforation and preheating are used for increasing cell uptake efficiencies of gold nanorings (NRIs), which have the localized surface plasmon resonance wavelength around 1064 nm, and photosensitizer, AlPcS, and hence enhancing the cell damage efficiency through the photothermal (PT) and photodynamic (PD) effects. The perforation and preheating effects are generated by illuminating a defocused 1064-nm femtosecond (fs) laser and a defocused 1064-nm continuous (cw) laser, respectively. Cell damage is produced by illuminating cell samples with a focused 1064-nm cw laser through the PT effect, a focused 1064-nm fs laser through both PT and PD effects, and a focused 660-nm cw laser through the PD effect. Under various conditions with and without cell wash before laser illumination, through either perforation or preheating process, cell uptake and hence cell damage efficiencies can be enhanced. Under our experimental conditions, perforation can be more effective at enhancing cell uptake and damage when compared with preheating.

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