Quantitative analysis of nanoparticle internalization in mammalian cells by high resolution X-ray microscopy
Background: Quantitative analysis of nanoparticle uptake at the cellular level is critical to nanomedicine procedures. In particular, it is required for a realistic evaluation of their effects. Unfortunately, quantitative measurements of nanoparticle uptake still pose a formidable technical challenge. We present here a method to tackle this problem and analyze the number of metal nanoparticles present in different types of cells. The method relies on high-lateral-resolution (better than 30 nm) transmission x-ray microimages with both absorption contrast and phase contrast - including two-dimensional (2D) projection images and three-dimensional (3D) tomographic reconstructions that directly show the nanoparticles.
Keywords: Refractive-Index Radiology ; Drug-Delivery ; Gold Nanoparticles ; Cellular Uptake ; Magnetic Nanoparticles ; Synchrotron-Radiation ; Cancer-Cells ; Cytotoxicity ; Enhancement ; Irradiation ; CIBM-PC
Record created on 2011-12-16, modified on 2016-08-09