Dual-triggered drug-release vehicles for synergistic cancer therapy

Colloids Surf B Biointerfaces. 2019 Jan 1:173:788-797. doi: 10.1016/j.colsurfb.2018.10.043. Epub 2018 Oct 19.

Abstract

Cancer is a complex and tenacious disease. Drug-delivery systems in combination with multimodal therapy strategies are very promising candidates for cancer theranostic applications. In this study, a new drug-delivery vehicle that combine human serum albumin (HSA)- and poly(sodium 4-styrenesulfonate) (PSS)-coated gold nanorod nanoparticles(GNR/PSS/HSA NPs) was developed for synergistic cancer therapy. Doxorubicin (DOX) was loaded onto GNR/PSS/HSA NPs, by electrostatic and hydrophobic forces, to create multimodal DOX@GNR/PSS/HSA NPs. DOX@GNR/PSS/HSA NPs were found to be highly biocompatible and stable in physiological solutions. Furthermore, GNR/PSS/HSA NPs with or without DOX were designed to exhibit strong absorbance in the near-infrared region and high photothermal conversion efficiency. Therefore, bimodal DOX release from DOX@GNR/PSS/HSA NPs could be triggered by an acidic pH and by near-infrared irradiation after NPs preferentially accumulated at tumor sites, leading to a significant chemotherapeutic effect. Moreover, DOX@GNR/PSS/HSA NPs were designed to be applied during chemo- and photo-thermal combination therapy and exhibited a synergistic anticancer effect that was superior to the effect of monotherapy, from both in vitro and in vivo results. These results suggest that DOX@GNR/PSS/HSA NPs are a strong candidate for a nanoplatform for future antitumor therapeutic strategies.

Keywords: Chemotherapy; Controlled drug release; Gold nanorod; Human serum albumin; Photothermal therapy.

MeSH terms

  • Animals
  • Antibiotics, Antineoplastic / chemistry
  • Antibiotics, Antineoplastic / metabolism
  • Antibiotics, Antineoplastic / pharmacology*
  • Combined Modality Therapy / methods
  • Delayed-Action Preparations*
  • Doxorubicin / chemistry
  • Doxorubicin / metabolism
  • Doxorubicin / pharmacology*
  • Drug Compounding / methods
  • Drug Liberation
  • Female
  • Gold / chemistry
  • HeLa Cells
  • Humans
  • Hydrogen-Ion Concentration
  • Infrared Rays
  • Injections, Subcutaneous
  • Low-Level Light Therapy / methods
  • Mice
  • Mice, Nude
  • Molecular Targeted Therapy / methods*
  • Nanotubes / chemistry*
  • Neoplasms / therapy*
  • Polymers / chemistry
  • Serum Albumin, Human / chemistry
  • Sulfonic Acids / chemistry
  • Xenograft Model Antitumor Assays

Substances

  • Antibiotics, Antineoplastic
  • Delayed-Action Preparations
  • Polymers
  • Sulfonic Acids
  • Gold
  • Doxorubicin
  • Serum Albumin, Human
  • styrenesulfonic acid polymer