Plasmonic copper sulfide nanocrystals exhibiting near-infrared photothermal and photodynamic therapeutic effects

Shunhao Wang, Andreas Riedinger, Hongbo Li, Changhui Fu, Huiyu Liu*, Linlin Li, Tianlong Liu, Longfei Tan, Markus J. Barthel, Giammarino Pugliese, Francesco De Donato, Marco Scotto D'Abbusco, Xianwei Meng, Liberato Manna, Huan Meng, Teresa Pellegrino

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

562 Citations (Scopus)

Abstract

Recently, plasmonic copper sulfide (Cu2-xS) nanocrystals (NCs) have attracted much attention as materials for photothermal therapy (PTT). Previous reports have correlated photoinduced cell death to the photothermal heat mechanism of these NCs, and no evidence of their photodynamic properties has been reported yet. Herein we have prepared physiologically stable near-infrared (NIR) plasmonic copper sulfide NCs and analyzed their photothermal and photodynamic properties, including therapeutic potential in cultured melanoma cells and a murine melanoma model. Interestingly, we observe that, besides a high PTT efficacy, these copper sulfide NCs additionally possess intrinsic NIR induced photodynamic activity, whereupon they generate high levels of reactive oxygen species. Furthermore, in vitro and in vivo acute toxic responses of copper sulfide NCs were also elicited. This study highlights a mechanism of NIR light induced cancer therapy, which could pave the way toward more effective nanotherapeutics.

Original languageEnglish
Pages (from-to)1788-1800
Number of pages13
JournalACS Nano
Volume9
Issue number2
DOIs
Publication statusPublished - 24 Feb 2015
Externally publishedYes

Keywords

  • copper sulfide nanocrystals
  • near-infrared light
  • photodynamic therapy
  • photothermal therapy

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