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Nanotube Molecular Transporters: Internalization of Carbon Nanotube−Protein Conjugates into Mammalian Cells
Abstract
The interactions between various functionalized carbon nanotubes and several types of human cancer cells are explored. We have prepared modified nanotubes and have shown that these can be derivatized in a way that enables attachment of small molecules and of proteins, the latter through a novel noncovalent association. The functionalized carbon nanotubes enter nonadherent human cancer cells as well as adherent cell lines (CHO and 3T3) and by themselves are not toxic. While the fluoresceinated protein streptavidin (MW approximately 60 kD) by itself does not enter cells, it readily enters cells when complexed to a nanotube-biotin transporter and exhibits dose-dependent cytotoxicity. The uptake pathway is consistent with adsorption-mediated endocytosis. The use of carbon nanotubes as molecular transporters could be exploited for various cargos. The biocompatibility and unique physical, electrical, optical, and mechanical properties of nanotubes provide the basis for new classes of materials for drug, protein, and gene delivery applications.
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Metadata
- Authors
- Shi Kam, N. W., Jessop, T. C., Wender, P. A., & Dai, H.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2004-05-13
- Volume
- 126
- Issue
- 22
- Pages
- 6850-6851
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W1966649591
- Cited by
- 1,352
- References
- 0
- FWCI
- 49.21
- Type
- journal article
- Language
- en
- Open access
- closed
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