Journal
NANOMEDICINE
Volume 11, Issue 5, Pages 447-463Publisher
FUTURE MEDICINE LTD
DOI: 10.2217/nnm.15.214
Keywords
boron nitride nanotubes; curcumin; inflammation; Lucifer yellow; microglia; nanosensors
Funding
- Canadian Institutes for Health Research (CIHR)
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- World Premier International (WPI) Research Center Initiative
- National Institute for Materials Science (NIMS), Japan
- International Center for Materials Nanoarchitectonics (MANA)
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Aim: To evaluate the response of cells to boron nitride nanotubes (BNNTs) carrying fluorescent probes or drugs in their inner channel by assessment of the cellular localization of the fluorescent cargo, evaluation of the in vitro release and biological activity of a drug (curcumin) loaded in BNNTs. Methods: Cells treated with curcumin-loaded BNNTs and stimulated with lipopolysaccharide were assessed for nitric oxide release and stimulation of IL-6 and TNF-alpha. The cellular trafficking of two cell-permeant dyes and a non-cell-permeant dye loaded within BNNTs was imaged. Results: BNNTs loaded with up to 13 wt% fluorophores were internalized by cells and controlled release of curcumin triggered cellular pathways associated with the known anti-inflammatory effects of the drug. Conclusion: The overall findings indicate that BNNTs can function as nanocarriers of biologically relevant probes/drugs allowing one to examine/control their local intracellular localization and biochemical effects, leading the way to applications as intracellular nanosensors.
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