A spiropyran-coumarin platform: an environment sensitive photoresponsive drug delivery system for efficient cancer...

Area of Science:

• Biomedical Engineering
• Materials Science
• Pharmacology

Background:

• Current anticancer agents suffer from severe host toxicity due to nonspecific biodistribution.
• There is a need for efficient and targeted anti-cancer drug delivery systems.

Purpose of the Study:

• To design and develop a single-component, photoresponsive drug delivery system for enhanced anti-cancer therapy.
• To create a system that synchronizes internal (pH) and external (light) triggers for controlled drug release.

Main Methods:

• Fusion of spiropyran and coumarin platforms into a single component system (SP-Cou-Cbl).
• Utilized the lower pH of cancer tissue to trigger spiropyran ring-opening and coumarin fluorescence activation.
• Employed external light to control the release of an anti-tumor drug.

Main Results:

• The SP-Cou-Cbl system demonstrated a distinct color change and fluorescence activation in response to pH.
• External light successfully controlled the release of the anti-tumor drug.
• The system exhibited high fluorescence and promising biocompatibility.

Conclusions:

• The developed photoresponsive system offers a dual-control mechanism for targeted anti-cancer drug delivery.
• The SP-Cou-Cbl system is suitable for cell imaging and in vitro studies due to its fluorescence and biocompatibility.