ZFIN ID: ZDB-PUB-161206-2
Redox and pH Dual Responsive Polymer Based Nanoparticles for In Vivo Drug Delivery
Ang, C.Y., Tan, S.Y., Teh, C., Lee, J.M., Wong, M.F., Qu, Q., Poh, L.Q., Li, M., Zhang, Y., Korzh, V., Zhao, Y.
Date: 2017
Source: Small (Weinheim an der Bergstrasse, Germany)   13(7): (Journal)
Registered Authors: Korzh, Vladimir, Teh, Cathleen
Keywords: polymeric nanoparticles, responsive release, self-assembly, tumor, zebrafish, drug delivery
MeSH Terms:
  • Acids/chemistry
  • Animals
  • Antineoplastic Agents/pharmacology
  • Doxorubicin/pharmacology
  • Doxorubicin/therapeutic use
  • Drug Delivery Systems*
  • Endocytosis/drug effects
  • HeLa Cells
  • Humans
  • Hydrogen-Ion Concentration
  • Larva/drug effects
  • Liver Neoplasms/drug therapy
  • Liver Neoplasms/pathology
  • Nanoparticles/chemistry*
  • Nanoparticles/ultrastructure
  • Oxidation-Reduction
  • Polymers/chemistry*
  • Spectroscopy, Fourier Transform Infrared
  • Zebrafish/metabolism
PubMed: 27918645 Full text @ Small
Responsive nanomaterials have emerged as promising candidates as drug delivery vehicles in order to address biomedical diseases such as cancer. In this work, polymer-based responsive nanoparticles prepared by a supramolecular approach are loaded with doxorubicin (DOX) for the cancer therapy. The nanoparticles contain disulfide bonds within the polymer network, allowing the release of the DOX payload in a reducing environment within the endoplasm of cancer cells. In addition, the loaded drug can also be released under acidic environment. In vitro anticancer studies using redox and pH dual responsive nanoparticles show excellent performance in inducing cell death and apoptosis. Zebrafish larvae treated with DOX-loaded nanoparticles exhibit an improved viability as compared with the cases treated with free DOX by the end of a 3 d treatment. Confocal imaging is utilized to provide the daily assessment of tumor size on zebrafish larva models treated with DOX-loaded nanoparticles, presenting sustainable reduction of tumor. This work demonstrates the development of functional nanoparticles with dual responsive properties for both in vitro and in vivo drug delivery in the cancer therapy.