Related Experiment Video

Updated: Sep 5, 2025

Preparation and Characterization of Lipophilic Doxorubicin Pro-drug Micelles
09:56

Preparation and Characterization of Lipophilic Doxorubicin Pro-drug Micelles

Published on: August 2, 2016

15.0K

Modified peroxamide-based reactive oxygen species (ROS)-responsive doxorubicin prodrugs

Mina Jafari1, Vishnu Sriram1, Gurdat Premnauth2

  • 1Chemical Engineering Program, Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221, United States.

Bioorganic Chemistry
|July 5, 2022
PubMed

Insights

Researchers developed novel doxorubicin prodrugs that are sensitive to reactive oxygen species (ROS). The OH-mOX-Dox prodrug effectively targets breast cancer cells with minimal toxicity to normal cells, showing promise for cancer therapy.

Area of Science:

  • Biochemistry
  • Pharmacology
  • Oncology

Background:

  • Reactive oxygen species (ROS) are crucial for intracellular signaling.
  • Elevated ROS levels in the tumor microenvironment present therapeutic opportunities.
  • ROS-responsive prodrugs offer targeted cancer treatment strategies.

Purpose of the Study:

  • To design and synthesize novel peroxamide-based ROS-responsive prodrugs of doxorubicin.
  • To evaluate the ROS sensitivity and anti-cancer efficacy of these novel prodrugs.
  • To assess the targeted delivery and reduced toxicity of the developed prodrugs.

Main Methods:

  • Synthesis of modified peroxamide-based doxorubicin prodrugs.
  • In vitro evaluation of ROS sensitivity and specificity using cancer cell lines.
  • Assessment of anti-proliferation effects on breast cancer cell lines (MDA-MB-468, MDA-MB-231) and normal breast cells (MCF-12A).
  • Investigation of cytotoxicity enhancement with l-buthionine sulfoximine (BSO) and X-ray irradiation.

Main Results:

  • The OH-mOX-Dox prodrug demonstrated stable and highly specific ROS sensitivity.
  • OH-mOX-Dox exhibited potent anti-proliferation activity against MDA-MB-468 and MDA-MB-231 cells.
  • Minimal toxicity was observed in the normal breast cell line MCF-12A.
  • Cytotoxicity was significantly enhanced by elevated ROS levels induced by BSO and X-ray irradiation.

Conclusions:

  • Novel peroxamide-based doxorubicin prodrugs with specific ROS-responsiveness were successfully developed.
  • The OH-mOX-Dox prodrug shows significant potential for targeted breast cancer therapy.
  • Combined treatment strategies involving ROS induction can enhance the efficacy of OH-mOX-Dox.
Keywords:
DoxorubicinReactive oxygen speciesStimuli-responsive prodrug

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