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Published on: February 8, 2017
A stimuli-responsive hydrogel for doxorubicin delivery
Mahrokh Dadsetan1, Zen Liu, Matthias Pumberger
1Departments of Orthopedic Surgery and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN 55905, USA.
Biomaterials
|August 11, 2010
Summary
This study developed a novel polymeric hydrogel carrier for sustained anti-tumor drug delivery. The modified hydrogel effectively released doxorubicin, showing potent anti-cancer activity and minimizing systemic effects.
Area of Science:
- Biomaterials Science
- Drug Delivery Systems
- Cancer Therapeutics
Background:
- Optimizing anti-tumor drug delivery is crucial for enhancing efficacy and reducing systemic toxicity.
- Polymeric hydrogels offer potential as controlled release systems for chemotherapeutic agents.
Purpose of the Study:
- To develop and evaluate oligo(poly(ethylene glycol) fumarate) (OPF) hydrogels modified with sodium methacrylate (SMA) for sustained delivery of doxorubicin (DOX).
- To investigate the drug release mechanism and anti-tumor activity of the modified hydrogel system.
Main Methods:
- OPF hydrogels were modified with varying concentrations of SMA using photo-crosslinking.
- Doxorubicin (DOX) was incorporated into the SMA-modified hydrogels.
- Drug release kinetics were studied under different pH and ionic strength conditions.
- Cytotoxicity of released DOX was assessed using a human osteosarcoma cell line.
Main Results:
- SMA-modified OPF hydrogels demonstrated pH and ionic strength sensitivity.
- DOX was electrostatically bound and released via ion-exchange, with release rates dependent on SMA concentration.
- Released DOX retained biological activity and effectively killed cancer cells.
- Unmodified hydrogels showed no cytotoxicity.
Conclusions:
- SMA-modified OPF hydrogels represent a feasible and effective carrier for sustained chemotherapeutic drug delivery.
- This approach holds promise for improving cancer treatment by optimizing drug efficacy and minimizing side effects.
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