Label-free visualization of nilotinib-functionalized gold nanoparticles within single mammalian cells by C60- SIMS imaging

Anna N. Bloom, Hua Tian, Christian Schoen, Nicholas Winograd

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Obtaining a comprehensive grasp of the behavior and interaction of pharmaceutical compounds within single cells provides some of the fundamental details necessary for more effective drug development. In particular, the changes ensuing in the carrier, drug, and host environment in targeted drug therapy applications must be explored in greater detail, as these are still not well understood. Here, nilotinib-functionalized gold nanoparticles are examined within single mammalian cells with use of imaging cluster secondary ion mass spectrometry in a model study designed to enhance our understanding of what occurs to these particles once that have been internalized. Nilotinib, several types of gold nanoparticles, and the functionalized combination of the two were surveyed and successfully imaged within single cells to determine uptake and performance. Both nilotinib and the gold particle are able to be distinguished and visualized in the functionalized nanoparticle assembly within the cell. These compounds, while both internalized, do not appear to be present in the same pixels of the chemical image, indicating possible cleavage of nilotinib from the particle after cell uptake. The method provided in this work is a direct measurement of uptake and subcellular distribution of an active drug and its carrier within a framework. The results obtained from this study have the potential to be applied to future studies to provide more effective and specific cellular delivery of a relevant pharmaceutical compound.

Original languageEnglish (US)
Pages (from-to)3067-3076
Number of pages10
JournalAnalytical and Bioanalytical Chemistry
Volume409
Issue number12
DOIs
StatePublished - May 1 2017

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Secondary ion mass spectrometry
Gold
Nanoparticles
Labels
Visualization
Cells
Imaging techniques
Drug Carriers
Pharmaceutical Preparations
Drug therapy
Secondary Ion Mass Spectrometry
Hand Strength
Pixels
4-methyl-N-(3-(4-methylimidazol-1-yl)-5-(trifluoromethyl)phenyl)-3-((4-pyridin-3-ylpyrimidin-2-yl)amino)benzamide
Drug Therapy

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Biochemistry

Cite this

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Label-free visualization of nilotinib-functionalized gold nanoparticles within single mammalian cells by C60- SIMS imaging. / Bloom, Anna N.; Tian, Hua; Schoen, Christian; Winograd, Nicholas.

In: Analytical and Bioanalytical Chemistry, Vol. 409, No. 12, 01.05.2017, p. 3067-3076.

Research output: Contribution to journalArticle

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