Platinum folate nanoparticles toxicity: cancer vs. normal cells

Area of Science:

• Nanotechnology
• Biomedical Engineering
• Oncology

Background:

• Metallic nanoparticles are utilized in cancer diagnostics and therapy.
• Current limitations include the inability to achieve tumor-specific heating non-invasively.
• Targeted delivery to cancer cells remains a challenge for metallic nanoparticles.

Purpose of the Study:

• To synthesize folic acid-coated platinum nanoparticles.
• To investigate the preferential uptake of these nanoparticles by cancer cells.
• To evaluate the potential of these nanoparticles for targeted cancer therapy.

Main Methods:

• Synthesis of platinum nanoparticles using folic acid as a stabilizing agent.
• Characterization of nanoparticle size, morphology, and colloidal stability using TEM and zeta potential analysis.
• In vitro incubation of cancer and normal cells with platinum folate nanoparticles, followed by cytotoxicity assessment (IC50) and morphological analysis via TEM.

Main Results:

• Platinum nanoparticles with a narrow size distribution (2.3 ± 0.5 nm) and high colloidal stability were synthesized.
• Significantly higher IC50 values were observed for normal cells compared to cancer cells, indicating preferential targeting of cancer cells.
• TEM analysis revealed greater vacuole formation and morphological changes in cancer cells post-incubation, consistent with enhanced nanoparticle uptake.

Conclusions:

• Folic acid-coated platinum nanoparticles demonstrate preferential uptake by cancer cells.
• This targeting is mediated by folate receptor-mediated endocytosis.
• These nanoparticles show promise for minimally invasive, targeted cancer detection and treatment with reduced impact on healthy tissues.