Near-infrared light-mediated and nitric oxide-supplied nanospheres for enhanced synergistic thermo-chemotherapy

J Mater Chem B. 2019 Jan 28;7(4):548-555. doi: 10.1039/c8tb02939c. Epub 2019 Jan 2.

Abstract

Synergistic thermo-chemotherapy based multiple stimuli-responsive drug delivery systems have achieved significant improvement of cancer curative effects compared with single modality treatment. Nevertheless, the efficacy of thermo-chemotherapy is often reduced in drug-resistant tumors and the therapy method is unexpectedly associated with potential toxicity by utilizing poorly degradable materials. Here, we report a simple approach to encapsulate three drug payloads into multi-sensitive and degradable nanospheres (SDC@NS) to achieve anticancer effects. SDC@NS comprise a photothermal agent (cypate), an anticancer agent (doxorubicin), and a nitric oxide donor (SNAP) to achieve controllable drugs release in high concentration glutathione or under near-infrared light (NIR) irradiation. Hyperthermia from NIR-mediated cypate can accelerate cancer cell apoptosis in vitro and tumor tissue ablation in vivo. Furthermore, our results also confirmed that the nitric oxide-based SDC@NS showed significant cytotoxicity compared to the nitric oxide absent group (denoted as DC@NS) and an enhanced chemotherapy effect in vivo. The photothermal effect and payloads can synchronously realize cancer therapy and provide a new insight into the enhanced synergistic therapeutic effect.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Apoptosis / drug effects
  • Combined Modality Therapy / methods*
  • Doxorubicin / administration & dosage
  • Drug Delivery Systems / methods*
  • Drug Liberation
  • Humans
  • Hyperthermia, Induced
  • Indoles / pharmacology
  • Infrared Rays / therapeutic use*
  • LLC-PK1 Cells
  • MCF-7 Cells
  • Mice, Inbred C57BL
  • Nanospheres / therapeutic use*
  • Neoplasms / therapy*
  • Nitric Oxide / pharmacology
  • Propionates / pharmacology
  • Swine
  • Xenograft Model Antitumor Assays

Substances

  • Cypate
  • Indoles
  • Propionates
  • Nitric Oxide
  • Doxorubicin