Facile Deposition of Manganese Dioxide to Albumin-Bound Paclitaxel Nanoparticles for Modulation of Hypoxic Tumor Microenvironment To Improve Chemoradiation Therapy

Mol Pharm. 2018 Feb 5;15(2):447-457. doi: 10.1021/acs.molpharmaceut.7b00808. Epub 2018 Jan 8.

Abstract

Tumor microenvironment with hypoxia and excess hydrogen peroxide (H2O2) tremendously limits the effect of chemoradiation therapy of colorectal cancer. For the first time, we developed a facile method to deposit manganese dioxide (MnO2) on the surface of albumin bound paclitaxel nanoparticles (ANPs-PTX) to obtain MnO2-functioned ANPs-PTX (MANPs-PTX). In the tumor microenvironment, MANPs-PTX could consume excess hydrogen peroxide (H2O2) to produce abundant oxygen for tumor oxygenation and improve chemoradiation therapy. Meanwhile, the released Mn2+ from MANPs-PTX had excellent T1 magnetic resonance imaging (MRI) performances for tumor detection. Notably, the obtained MANPs-PTX would be a promising theranostic agent and have potential clinical application prospects.

Keywords: albumin-bound paclitaxel nanoparticles; chemoradiation therapy; magnetic resonance imaging; manganese dioxide; oxygenation; tumor microenvironment.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Albumin-Bound Paclitaxel / administration & dosage*
  • Albumin-Bound Paclitaxel / chemistry
  • Animals
  • Antineoplastic Agents / administration & dosage*
  • Antineoplastic Agents / chemistry
  • Cell Hypoxia / drug effects
  • Cell Line, Tumor / transplantation
  • Chemoradiotherapy / methods
  • Colorectal Neoplasms / diagnostic imaging
  • Colorectal Neoplasms / therapy*
  • Disease Models, Animal
  • Drug Compounding / methods*
  • Humans
  • Hydrogen Peroxide / metabolism
  • Male
  • Manganese Compounds / chemistry*
  • Mice
  • Mice, Inbred BALB C
  • Nanoparticles / administration & dosage
  • Nanoparticles / chemistry
  • Oxides / chemistry*
  • Treatment Outcome
  • Tumor Burden / drug effects
  • Tumor Burden / radiation effects
  • Tumor Microenvironment / drug effects

Substances

  • Albumin-Bound Paclitaxel
  • Antineoplastic Agents
  • Manganese Compounds
  • Oxides
  • Hydrogen Peroxide
  • manganese dioxide