pH-responsive glycodendrimer as a new active targeting agent for doxorubicin delivery

Area of Science:

• Biomaterials Science
• Nanotechnology
• Drug Delivery

Background:

• Developing targeted drug delivery systems is crucial for improving cancer therapy efficacy and reducing side effects.
• Glycodendrimers offer unique properties for drug encapsulation and targeted delivery.
• Cellulose nanocrystals provide a versatile scaffold for nanocarrier synthesis.

Purpose of the Study:

• To synthesize and characterize a pH-responsive active targeting glycodendrimer (ATGD) for doxorubicin delivery.
• To optimize doxorubicin loading onto the ATGD system.
• To evaluate the in vitro drug release profile, cytotoxicity, and biocompatibility of the ATGD-doxorubicin conjugate.

Main Methods:

• Synthesis of glycodendrimers on cellulose nanocrystal scaffolds.
• Conjugation with folic acid for active targeting.
• Response surface methodology for optimizing doxorubicin loading.
• In vitro doxorubicin release studies at different pH values.
• MTT assay for cytotoxicity and biocompatibility assessment.

Main Results:

• High doxorubicin loading capacity was achieved under optimized conditions, following monolayer-physisorption kinetics.
• Doxorubicin release was significantly higher at acidic pH compared to physiological pH, indicating pH-responsive behavior.
• Doxorubicin-loaded ATGD exhibited significant cytotoxicity against cancer cells.
• The ATGD carrier alone demonstrated good biocompatibility without significant toxicity.

Conclusions:

• The developed ATGD system is an effective pH-responsive nanocarrier for doxorubicin delivery.
• Active targeting via folic acid enhances potential for cancer cell-specific drug delivery.
• ATGD shows promise as a biocompatible and effective platform for cancer treatment.