Dihydroartemisinin loaded layered double hydroxide nanocomposites for tumor specific photothermal-chemodynamic therapy

J Mater Chem B. 2020 Dec 23;8(48):11082-11089. doi: 10.1039/d0tb01964j.

Abstract

With the inspiration to develop new cancer nanotherapeutics by repurposing old drugs, in the current study, a novel two dimensional nanomedicine namely Mn doped, dihydroartemisinin (DHA) loaded layered double hydroxide (MnMgFe-LDH/DHA) with peroxide self-supplying properties for enhanced photothermal-chemodynamic therapy was proposed. Such nanostructures could be synthesized by a simple coprecipitation method, and the as-prepared MnMgFe-LDH/DHA exhibits excellent photothermal properties with a photothermal conversion efficiency up to 10.7%. Besides, the in situ reaction between the released DHA and Fe2+/Mn2+ produced by the degradation of LDH can lead to a burst of intracellular reactive oxygen species (ROS) by Fenton-like reactions. Furthermore, the in vivo experiments demonstrate that MnMgFe-LDH/DHA exhibits a remarkable chemodynamic/photothermal therapy (CDT/PTT) synergistic effect on tumor treatment with negligible damage to normal tissues. Finally, this research provides a smart strategy to construct a DHA repurposing nanomedicine for tumor specific treatment.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antineoplastic Agents / administration & dosage
  • Antineoplastic Agents / chemical synthesis*
  • Artemisinins / administration & dosage
  • Artemisinins / chemical synthesis*
  • Cell Line, Tumor
  • Female
  • Hydroxides / administration & dosage
  • Hydroxides / chemical synthesis*
  • Mice
  • Mice, Inbred BALB C
  • Nanocomposites / administration & dosage
  • Nanocomposites / chemistry*
  • Neoplasms / drug therapy
  • Neoplasms / pathology
  • Photosensitizing Agents / administration & dosage
  • Photosensitizing Agents / chemical synthesis*
  • Photothermal Therapy / methods*
  • Xenograft Model Antitumor Assays / methods

Substances

  • Antineoplastic Agents
  • Artemisinins
  • Hydroxides
  • Photosensitizing Agents
  • artenimol
  • hydroxide ion