Tungsten disulfide-based nanocomposites for photothermal therapy

Tzuriel Levin, Hagit Sade, Rina Ben Shabbat Binyamini, Maayan Pour, Iftach Nachman, Jean Paul Lellouche*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Nanostructures of transition-metal dichalcogenides (TMDC) have raised scientific interest in the last few decades. Tungsten disulfide (WS2) nanotubes and nanoparticles are among the most extensively studied members in this group, and are used for, e.g., polymer reinforcement, lubrication and electronic devices. Their biocompatibility and low toxicity make them suitable for medical and biological applications. One potential application is photothermal therapy (PTT), a method for the targeted treatment of cancer, in which a light-responsive material is irradiated with a laser in the near-infrared range. In the current article we present WS2 nanotubes functionalized with previously reported ceric ammonium nitrate-maghemite (CAN-mag) nanoparticles, used for PTT. Functionalization of the nanotubes with CAN-mag nanoparticles resulted in a magnetic nanocomposite. When tested in vitro with two types of cancer cells, the functionalized nanotubes showed a better PTT activity compared to non-functionalized nanotubes, as well as reduced aggregation and the ability to add a second-step functionality. This ability is demonstrated here with two polymers grafted onto the nanocomposite surface, and other functionalities could be additional cancer therapy agents for achieving increased therapeutic activity.

Original languageEnglish
Pages (from-to)811-822
Number of pages12
JournalBeilstein Journal of Nanotechnology
Volume10
DOIs
StatePublished - 2019

Keywords

  • Cerium complex
  • Magnetic nanoparticles
  • Photothermal therapy
  • Surface functionalization
  • WS nanotubes

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