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dc.contributor.authorSelvi, B R-
dc.contributor.authorJagadeesan, D-
dc.contributor.authorSuma, B S-
dc.contributor.authorNagashankar, G-
dc.contributor.authorArif, M-
dc.contributor.authorBalasubramanyam, K-
dc.contributor.authorEswaramoorthy, M-
dc.contributor.authorKundu, Tapas K-
dc.date.accessioned2012-01-04T11:18:27Z-
dc.date.available2012-01-04T11:18:27Z-
dc.date.issued2008-10-01-
dc.identifier1530-6984en_US
dc.identifier.citationNano Letters 8(10), 3182-3188 (2008)en_US
dc.identifier.urihttp://hdl.handle.net/10572/140-
dc.description.abstractIn this report, we demonstrate glucose-derived carbon nanospheres(1) to be an emerging class of intracellular carriers. The surfaces of these spheres are highly functionalized and do not need any further modification. Besides, the intrinsic fluorescence property of carbon nanospheres helps in tracking their cellular localization without any additional fluorescent tags. The spheres are found to target the nucleus of the mammalian cells, causing no toxicity. Interestingly, the in vivo experiments show that these nanospheres have an important ability to cross the blood-brain barrier and localize in the brain besides getting localized in the liver and the spleen. There is also evidence to show that they are continuously being removed from these tissues over time. Furthermore, these nanospheres were used as a carrier for the membrane-impermeable molecule CTPB (N-(4-chloro-3-trifluoromethylphenyl)-2-ethoxybenzamide), the only known small-molecule activator of histone acetyltransferase (HAT) p300.(2) Biochemical analyses such as Western blotting, immunohistochemistry, and gene expression analysis show the induction of the hyperacetylation of histone acetyltransferase (HAT) p300 (autoacetylation) as well as histones both in vitro and in vivo and the activation of HAT-dependent transcription upon CTPB delivery. These results establish an alternative path for the activation of gene expression mediated by the induction of HAT activity instead of histone deacetylase (HDAC) inhibition.en_US
dc.description.urihttp://dx.doi.org/10.1021/nl801503men_US
dc.language.isoenen_US
dc.publisherAmerican Chemical Societyen_US
dc.rights© 2008 American Chemical Societyen_US
dc.subjectBlood-Brain-Barrieren_US
dc.subjectDrug-Deliveryen_US
dc.subjectCellsen_US
dc.subjectNanoparticlesen_US
dc.subjectNanotubesen_US
dc.subjectChromatinen_US
dc.subjectTransportersen_US
dc.subjectTranscriptionen_US
dc.subjectSystemen_US
dc.subjectParticlesen_US
dc.titleIntrinsically Fluorescent Carbon Nanospheres as a Nuclear Targeting Vector: Delivery of Membrane-Impermeable Molecule to Modulate Gene Expression In Vivoen_US
dc.typeArticleen_US
Appears in Collections:Research Papers (Tapas K. Kundu)

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