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Gold Nanoparticles Conjugated L-Lysine for Improving Cisplatin Delivery to Human Breast Cancer Cells

[ Vol. 18 , Issue. 6 ]


Mahdieh Ganji, Fariba Dashtestani*, Hoda Keshmiri Neghab, Mohammad Hasan Soheilifar, Fatemeh Hakimian* and Fatemeh Haghiralsadat   Pages 753 - 760 ( 8 )


Introduction: Nano drug delivery is a broad field of research on the development of novel nano- carrier systems for effective therapeutic delivery of drugs. Here, an anticancer drug, cisplatin (CDDP) conjugated Gold Nanoparticles (GNPs) via L-Lysine (Lys) linker.

Methods: The produced nanodrug (GNPs-Lys-CDDP) was characterized by UV-Vis spectroscopy, Dynamic Light Scattering (DLS), Zeta potentials and electron force microscopy. The cytotoxic efficacy of the GNPs-Lys-CDDP against human breast cancer cells (SKBR3) and normal cells (MCF- 10A) was evaluatedby MTT assay. Cell apoptosis and morphology changes were assessed by flowcytometery and Acridine Orange/Ethidium Bromide (AO/EtBr) staining, respectively.

Results: It was found that the GNPs-Lys-CDDP with a size of 85 nm and negatively charged with a zeta-potential of about -25 mV could be taken up by tumor cells. A marked change in the UV spectrum of GNPs-Lys-CDDP compare to GNPs showed a strong absorption shift in the 525 nm region. The LD 50 of GNPs-Lys-CDDP against SKBR3 (1 μg.mL -1), was found to be 8 times lower than that of naked CDDP against SKBR3 (8 μg.mL -1). The nanocomplex GNPs-Lys-CDDP also significantly increased the apoptosis of SKBR3 with the lowest cytotoxic effects on normal cells.

Discussion: This work indicates that GNPs effectively could decrease the lethal dose of CDDP to 87%. Hence, GNPs modified by Lys, could be a good nano-carrier for chemotherapeutic drugs.


Drug delivery, gold nanoparticles, cancer treatment drug, l-lysine, cisplatin, spectroscopy.


Department of Biology, Payame Noor University, Taft, Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Department of Medical Laser, Medical Laser Research Center, Yara Institute, ACECR, Tehran, Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Medical Nanotechnology & Tissue Engineering Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd

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