NanoSIMS imaging of uranium nanoparticles in daphnia intestine

Uranium nanoparticle research was recently featured as the CAMECA calendar image for July 2022.  In this high resolution (50 nm) image, uranium nanoparticles are shown within the intestine of exposed Daphnia magna, a freshwater crustacean and keystone species of aquatic ecosystems.  Images were obtained by using a CAMECA NanoSIMS 50L at The Chemical Imaging Infrastructure (CII) hosted by Chalmers University of Technology and the University of Gothenburg and showed that these nanoparticles accumulated in the intestine and penetrated the epithelial cells potentially leading to further uptake into the organism.  Visual evidence of nanoparticle uptake into cells may have implications for uranium ecotoxicology by showing that such particles are bioavailable. 

NanoSIMS imaging of uranium nanoparticles in daphnia intestine

NanoSIMS imaging of uranium nanoparticles in daphnia intestine

Photo
E. Ranjbari, P. Malmberg, M. Kurczy, I.T Behnke Byrnes and O.C Lind

This research will be published in an upcoming peered review article (Cellular Uptake of Uranium Nanoparticles Visualized by Secondary Ion Mass Spectrometry Imaging Techniques) authored by Ian Byrnes, Ole Christian Lind, Dag Anders Brede, and Lisa Rossbach from CERAD CoE, Norwegian University of Life Sciences together with Per Malmberg (Chalmers University of Technology), Elias Ranjbari (University of Gothenburg), and Michael Kurczy (AstraZeneca, NanoSIMS - Chemical Imaging Infrastructure CII).

Published 7. July 2022 - 12:51 - Updated 7. July 2022 - 12:53