Prodrug strategies in anticancer chemotherapy

Area of Science:

• Oncology
• Pharmacology
• Drug Delivery

Background:

• Approved anticancer drugs often exhibit narrow therapeutic windows due to systemic toxicity and poor tumor selectivity.
• Prodrug strategies offer a promising avenue to enhance chemotherapy efficacy and safety.

Purpose of the Study:

• To review the main concepts and strategies behind anticancer prodrug design.
• To discuss methods for improving drug targeting and achieving controlled release at the tumor site.

Main Methods:

• Discussion of active and passive targeting using ligands and macromolecular carriers.
• Exploration of release strategies based on tumor-specific characteristics (e.g., low pH, enzymes).
• Introduction to advanced strategies like antibody-directed enzyme prodrug therapy (ADEPT) and self-eliminating structures.

Main Results:

• Prodrug design focuses on two key principles: targeting the tumor and controlled drug release.
• Various targeting mechanisms (ligands, carriers) and release triggers (pH, enzymes) are effective.
• Novel approaches like ADEPT and self-eliminating prodrugs show clinical potential.

Conclusions:

• Anticancer prodrugs represent a significant advancement in chemotherapy by addressing limitations of conventional drugs.
• Targeting and controlled release strategies are crucial for developing safer and more effective cancer therapeutics.
• The reviewed prodrug approaches hold promise for future clinical applications in oncology.