Plasmonic/Magnetic Multifunctional nanoplatform for Cancer Theranostics

Area of Science:

• Nanotechnology
• Biomedical Engineering
• Materials Science

Background:

• Development of multifunctional nanoparticles for theranostic applications is crucial for advanced cancer treatment.
• Cobalt ferrite (CoFe2O4) core nanoparticles offer magnetic properties, while gold shells enhance stability and plasmonic characteristics.

Purpose of the Study:

• To develop a multifunctional magneto-plasmonic core-shell nanoparticle (Nk@A) for targeted drug delivery, MRI imaging, and hyperthermia.
• To evaluate the efficacy of Nk@A as a theranostic agent for cancer treatment.

Main Methods:

• Iterative-seeding method to create CoFe2O4@Au core-shell nanoparticles (Nk@A).
• In vitro studies for Doxorubicin release kinetics at endosomal pH (5.4).
• Cellular MRI (T2 contrast agent) and microwave-induced magnetic hyperthermia experiments.

Main Results:

• Nk@A demonstrated pH-dependent Doxorubicin release, optimal at pH 5.4.
• Nk@A exhibited efficient T2 contrast enhancement in L6 and Hep2 cells (r2 values provided).
• Microwave hyperthermia using Nk@A effectively increased temperature and enhanced cancer cell cytotoxicity when combined with chemotherapy.

Conclusions:

• The developed Nk@A nanoparticle serves as a versatile platform for targeted drug delivery, T2-weighted MRI, and magnetic hyperthermia.
• This integrated nanoplatform shows significant potential for combined cancer therapy, improving treatment outcomes.