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Protein Kinase C-delta Inhibitor Peptide Formulation using Gold Nanoparticles
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Enhancing proteasome-lnhibitor effect by functionalized gold nanoparticles.

Sílvia Castro Coelho, Sandra Rocha, Maria Carmo Pereira

    Journal of Biomedical Nanotechnology
    |April 17, 2014
    PubMed
    Summary

    Gold nanoparticles boost bortezomib

    Area of Science:

    • Nanotechnology
    • Biomedical Engineering
    • Oncology

    Background:

    • Prostate cancer treatment faces challenges with drug efficacy and resistance.
    • Proteasome inhibitors like bortezomib are crucial but require high concentrations.
    • Nanoparticle drug delivery systems offer potential to overcome these limitations.

    Purpose of the Study:

    • To investigate the synergistic effect of gold nanoparticles with bortezomib in prostate cancer cells.
    • To evaluate the potential of gold nanoparticles to enhance bortezomib's anticancer activity.
    • To explore the role of gold nanoparticles in overcoming multi-drug resistance (MDR).

    Main Methods:

    • Utilized polyethylene glycol-coated gold nanoparticles.
    • Tested the combined effect of nanoparticles and bortezomib on Du145 prostate cancer cell line.

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  • Assessed cell viability and cytotoxicity at various drug concentrations.

    • Main Results:

    • Gold nanoparticles significantly enhanced bortezomib's anticancer response.
    • Synergistic effect observed, reducing cell viability at much lower bortezomib concentrations (4 nM vs. 120 nM).
    • Demonstrated enhanced permeation and retention (EPR) effect by gold nanoparticles in cancer cells.

    Conclusions:

    • Gold nanoparticles can potentiate the efficacy of proteasome inhibitors like bortezomib.
    • This approach may reduce required drug dosage and combat multi-drug resistance (MDR).
    • Functionalized gold nanoparticles show promise for targeted drug delivery in adenocarcinoma treatment.