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Published on: February 19, 2016
Topoisomerase inhibitors: Pharmacology and emerging nanoscale delivery systems
Ali Dehshahri1, Milad Ashrafizadeh2, Elham Ghasemipour Afshar3
1Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz, Iran.
Abstract:
Topoisomerase enzymes have shown unique roles in replication and transcription. These enzymes which were initially found in Escherichia coli have attracted considerable attention as target molecules for cancer therapy. Nowadays, there are several topoisomerase inhibitors in the market to treat or at least control the progression of cancer. However, significant toxicity, low solubility and poor pharmacokinetic properties have limited their wide application and these characteristics need to be improved. Nano-delivery systems have provided an opportunity to modify the intrinsic properties of molecules and also to transfer the toxic agent to the target tissues. These delivery systems leads to the re-introduction of existing molecules present in the market as novel therapeutic agents with different physicochemical and pharmacokinetic properties. This review focusses on a variety of nano-delivery vehicles used for the improvement of pharmacological properties of topoisomerase inhibitors and thus enabling their potential application as novel drugs in the market.
Insights
Nano-delivery systems enhance topoisomerase inhibitors for cancer therapy by improving drug properties. This approach aims to overcome limitations of existing treatments and develop novel therapeutic agents.
Area of Science:
- Biochemistry and Molecular Biology
- Pharmacology and Pharmaceutical Sciences
- Nanotechnology in Medicine
Background:
- Topoisomerase enzymes play critical roles in DNA replication and transcription.
- Topoisomerase inhibitors are established cancer therapeutics but face challenges like toxicity and poor solubility.
- Existing inhibitors require improved pharmacokinetic profiles for broader clinical application.
Purpose of the Study:
- To review various nano-delivery systems for enhancing topoisomerase inhibitors.
- To explore how nanotechnology can overcome the limitations of current topoisomerase-targeted cancer drugs.
- To highlight the potential of nano-delivery systems in developing novel therapeutic agents.
Main Methods:
- Literature review of nano-delivery vehicles used with topoisomerase inhibitors.
- Analysis of studies demonstrating improved physicochemical and pharmacokinetic properties.
- Examination of research on targeted delivery of topoisomerase inhibitors via nanocarriers.
Main Results:
- Nano-delivery systems can significantly modify the properties of topoisomerase inhibitors.
- Nanocarriers facilitate targeted delivery, potentially reducing systemic toxicity.
- Repurposing existing drugs through nanoformulation offers improved therapeutic potential.
Conclusions:
- Nano-delivery systems offer a promising strategy to enhance the efficacy and safety of topoisomerase inhibitors.
- Nanotechnology enables the development of novel formulations with improved drug delivery characteristics.
- This approach holds potential for advancing cancer therapy by optimizing existing drug candidates.
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