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ECB-ART-42654
Nanotechnology 2012 Dec 14;2349:495104. doi: 10.1088/0957-4484/23/49/495104.
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High ordered biomineralization induced by carbon nanoparticles in the sea urchin Paracentrotus lividus.

Manno D , Carata E , Tenuzzo BA , Panzarini E , Buccolieri A , Filippo E , Rossi M , Serra A , Dini L .


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A surprising and unexpected biomineralization process was observed during toxicological assessment of carbon nanoparticles on Paracentrotus lividus (sea urchin) pluteus larvae. The larvae activate a process of defense against external material, by incorporating the nanoparticles into microstructures of aragonite similarly to pearl oysters. Aiming at a better understanding of this phenomenon, the larvae were exposed to increasing concentrations of carbon nanoparticles and the biomineralization products were analyzed by electron microscopy, x-ray diffraction and Raman spectroscopy. In order to evaluate the possible influence of Sp-CyP-1 expression on this biomineralization process by larvae, analyses of gene expression (Sp-CyP-1) and calcein labeling were performed. Overall, we report experimental evidence about the capability of carbon nanoparticles to induce an increment of Sp-CyP-1 expression with the consequent activation of a biomineralization process leading to the production of a new pearl-like biomaterial never previously observed in sea urchins.

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Genes referenced: LOC100887844