Multistage Nanocarrier Based on an Oil Core-Graphene Oxide Shell

Area of Science:

• Biomedical Engineering
• Materials Science
• Nanotechnology

Background:

• Cancer treatment faces challenges in delivering therapeutic molecules to individual cancer cells.
• Nanotechnology offers enhanced drug protection and tumor accumulation but faces penetration limitations.
• Existing nanocarriers often struggle to penetrate dense tumor matrices due to their size.

Purpose of the Study:

• To develop a novel multistage nanocarrier system for improved anticancer drug delivery.
• To overcome the penetration limitations of conventional nanocarriers within tumor tissues.
• To enhance the targeting and uptake of anticancer agents like curcumin in cancer cells.

Main Methods:

• Fabrication of a multistage nanocarrier using graphene oxide quantum dots (GOQDs) functionalized with hyaluronic acid (HA) on a biodegradable oil-in-water nanoemulsion (O/W NE) template.
• Utilized layer-by-layer deposition technique for nanocarrier assembly.
• Incorporated curcumin as a model anticancer drug and chitosan as a biodegradable polymer.
• Conducted cell uptake and 3D microtissue penetration experiments to evaluate nanocarrier performance.

Main Results:

• Successfully synthesized a multistage nanocarrier system with GOQDs-HA (12 nm) on a 100 nm O/W NE template.
• Demonstrated the potential for the biodegradable core to degrade within the tumor, releasing smaller GOQDs-HA.
• Preliminary experiments showed promising cell uptake and penetration capabilities in 3D microtissues.
• Hyaluronic acid functionalization suggests enhanced active targeting of cancer and stromal cells.

Conclusions:

• The proposed multistage nanocarrier system shows significant potential for overcoming drug delivery barriers in cancer treatment.
• This nanotechnology approach facilitates deeper tumor penetration and targeted delivery of anticancer agents.
• Further research is warranted to fully elucidate the therapeutic efficacy and safety of this novel nanocarrier system.