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Cervical cancer treatment with a locally insertable controlled release delivery system
Vandana Keskar1, Prem S Mohanty, Ernest J Gemeinhart
1The University of Illinois, Department of Biopharmaceutical Sciences, Chicago, IL 60612, USA.
Summary
A new vaginal device delivers cisplatin chemotherapy directly to cervical cancer cells, reducing side effects. This polymeric system offers controlled drug release and shows effectiveness against various cervical cancer types in vitro.
Area of Science:
- Biomedical Engineering
- Oncology
- Drug Delivery Systems
Background:
- Local delivery of chemotherapy can enhance drug concentration at the tumor site and minimize systemic toxicity.
- Cervical cancer treatment often relies on systemic chemotherapy, which can lead to significant side effects.
Purpose of the Study:
- To develop and evaluate a novel, insertable polymeric drug delivery system for local cisplatin chemotherapy in cervical cancer.
- To characterize the release kinetics and in vitro efficacy of cisplatin from the developed device.
Main Methods:
- Cisplatin was incorporated into a poly(ethylene-co-vinyl acetate) (EVAc) matrix, designed for vaginal insertion.
- Drug release profiles were analyzed using empirical and mechanistic models to determine release rates and diffusion coefficients.
- In vitro cytotoxicity assays were performed using HPV-positive and HPV-negative cervical cancer cell lines.
Main Results:
- The EVAc device demonstrated a biphasic release of cisplatin, featuring an initial rapid release followed by a slower, near-linear phase.
- The near-linear release rate varied from 0.38 ± 0.15 μg/day to 46.9 ± 10.0 μg/day, depending on drug loading.
- The drug-loaded devices exhibited significant in vitro efficacy against both HPV-positive and HPV-negative cervical cancer cells.
Conclusions:
- The developed polymeric drug delivery system provides controlled local release of cisplatin for cervical cancer.
- This novel delivery approach shows promise for improving the therapeutic index of cisplatin in cervical cancer treatment.
- Further in vivo investigation is warranted to assess the clinical potential of this localized chemotherapy delivery system.
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