Abstract
This study has evaluated the effects of three industrially relevant multi-walled carbon nanotubes (MWNTs) on human Jurkat T cells and compared them to those of crocidolite asbestos. No overt acute toxicity was observed for all MWNTs tested although signs of oxidative stress were evident. MWNTs did not activate resting Jurkat cells and only slightly stimulated the release of the cytokine interleukin-2 (IL-2) in activated cells. Similar to MWNTs, crocidolite had little toxic effects on Jurkat cells but neither induced the formation of reactive oxygen species nor changes in IL-2 signaling. These findings suggest that, in contrast to many other cell types, T cells are relatively resistant to stress induced by high-aspect ratio particles.
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