Ultrasensitive GSH-Responsive Ditelluride-Containing Poly(ether-urethane) Nanoparticles for Controlled Drug Release

Area of Science:

• Biomaterials Science
• Polymer Chemistry
• Nanotechnology

Background:

• Controlled drug delivery systems are crucial for effective cancer chemotherapy.
• Developing stimuli-responsive materials for targeted drug release remains a key challenge.
• Poly(ether-urethane) copolymers offer tunable properties for biomedical applications.

Purpose of the Study:

• To fabricate a novel redox-responsive drug delivery system using ditelluride-containing poly(ether-urethane) copolymers.
• To investigate the controlled release of doxorubicin (DOX) mediated by glutathione (GSH).
• To evaluate the potential of these nanoparticles as nanocarriers for cancer therapy.

Main Methods:

• Synthesis of water-soluble ditelluride-containing poly(ether-urethane) copolymers.
• Fabrication of copolymer nanoparticles for doxorubicin (DOX) loading.
• In vitro studies assessing drug release kinetics triggered by glutathione (GSH).
• In vitro and in vivo evaluation of nanoparticle uptake, tumor targeting, and antitumor efficacy.

Main Results:

• Successfully synthesized and characterized ditelluride-containing poly(ether-urethane) copolymers.
• Demonstrated controlled release of doxorubicin from nanoparticles via ditelluride bond cleavage by GSH.
• Confirmed biocompatibility of the nanoparticles as drug delivery vehicles.
• Showcased efficient cancer cell uptake, specific tumor targeting, and significant antitumor activity in vitro and in vivo.

Conclusions:

• Ditelluride-containing poly(ether-urethane) copolymers represent a novel platform for redox-responsive drug delivery.
• These nanoparticles offer a promising strategy for targeted chemotherapy with enhanced efficacy and reduced side effects.
• The developed system opens new avenues for advanced nanocarriers in cancer treatment.