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Functionalized Core/Shell Gold-Palladium Bimetallic Nanoparticles in Transferrin-Targeted Dual-Drug Delivery in a

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Summary
This summary is machine-generated.

This study developed targeted gold-palladium bimetallic nanoparticles (AuPd BNPs) for enhanced chemotherapy delivery. The AuPd BNPs effectively delivered Doxorubicin and 5-fluorouracil to cancer cells, showing high specificity and reduced toxicity.

Keywords:
5-fluorouracilbimetallic nanoparticleschitosandoxorubicindrug deliveryencapsulationgoldpalladiumtransferrin

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Area of Science:

  • Nanotechnology
  • Materials Science
  • Biomedical Engineering

Background:

  • Noble metal nanoparticles (NPs) and bimetallic nanoparticles (BNPs) have advanced due to refined synthesis techniques.
  • Gold (Au) and palladium (Pd) NPs offer low toxicity, biocompatibility, and ease of modification.
  • Chemotherapeutic drugs like Doxorubicin (DOX) and 5-fluorouracil (5-FU) have limitations due to rapid metabolism and severe side effects.

Purpose of the Study:

  • To develop an innovative drug delivery strategy mitigating limitations of current chemotherapeutics.
  • To synthesize and characterize transferrin (Tf)-decorated gold-palladium bimetallic nanoparticles (AuPd BNPs) for targeted drug delivery.
  • To evaluate the drug encapsulation, release profile, cellular uptake, and cytotoxicity of the developed nanocomplex.

Main Methods:

  • Chemical synthesis of core-shell AuPd NPs.
  • Conjugation of AuPd NPs with 5-FU and DOX-encapsulated chitosan (CS) complexes.
  • Decoration of nanocomplexes with transferrin (Tf) as a targeting moiety.
  • Characterization using Transmission Electron Microscopy (TEM) and Nanoparticle Tracking Analysis (NTA).
  • In vitro cytotoxicity assays on HeLa, MCF-7, and HEK293 cell lines.
  • Assessment of Tf-mediated cellular uptake and apoptosis induction.

Main Results:

  • Spherical AuPd BNPs with an average size of 73.4 nm were synthesized.
  • The functionalized BNPs achieved >70% encapsulation efficiency for 5-FU and DOX, with controlled release at pH 4.2.
  • Tf-targeted nanocomplexes demonstrated HeLa cell specificity, with no significant cytotoxicity in non-cancerous HEK293 cells.
  • Tf-mediated cellular uptake was confirmed, and cell death occurred via apoptosis.

Conclusions:

  • The synthesized Tf-targeted AuPd BNP-nanocomplex shows significant potential as an effective drug delivery vehicle.
  • This approach offers a promising strategy for targeted cancer therapy, enhancing drug efficacy while minimizing systemic toxicity.
  • Further research into this nanocarrier system could lead to improved chemotherapeutic treatments.