Size, concentration and incubation time dependence of gold nanoparticle uptake into pancreas cancer cells and itsfuture application to X-ray drug delivery system

Jade Dungao Trono, Kazue Mizuno, Noritaka Yusa, Takehisa Matsukawa, Kazuhito Yokoyama, Mitsuru Uesaka

Research output: Contribution to journalArticlepeer-review

68 Citations (Scopus)

Abstract

One of the restrictions in the potential use of gold markers for medical imaging/tracking of harder tumors is its size. We propose to use gold nanoparticles which, due to its small size, can be administered conveniently via intravenous injection. One of the factors that determine the clinical utility of nanoparticles is the ability to enter cells. In this report, the stability of gold nanoparticles mixed with different media was determined by UV-vis spectroscopy. Gold nanoparticle size was confirmed by TEM. Intracellular uptake using different gold nanoparticle sizes, incubation times and concentrations were analyzed using Atomic Absorption Spectrometry (AAS). Temperature dependence uptake was also measured using AAS. The results showed that pancreas cancer cells uptake 20 nm gold nanoparticles preferentially compared to other gold nanoparticle sizes. Efficient accumulation of gold nanoparticles into pancreas cancer cells can be achieved at longer incubation time and higher concentration. The findings of this study will help in the design and optimization of the gold nanoparticle-based agents for therapeutic and diagnostic applications of X-ray Drug Delivery System.

Original languageEnglish
Pages (from-to)103-109
Number of pages7
JournalJournal of radiation research
Volume52
Issue number1
DOIs
Publication statusPublished - 2011

Keywords

  • Gold nanoparticles
  • In-vitro uptake
  • Pancreas cancer cells
  • X-ray drug delivery system

ASJC Scopus subject areas

  • Radiation
  • Radiology Nuclear Medicine and imaging
  • Health, Toxicology and Mutagenesis

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