Journal
NANOSCALE
Volume 3, Issue 7, Pages 2844-2848Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1nr10278h
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Funding
- National Science Foundation [CMMI-0846323, CMMI-0856492]
- V Foundation for Cancer Research
- National Science Foundation Center for Scalable and Integrated NanoManufacturing (SINAM) [DMI-0327077]
- Wallace H. Coulter Foundation
- National Cancer Institute [U54CA151880]
- NATIONAL CANCER INSTITUTE [U54CA151880] Funding Source: NIH RePORTER
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Recent reports have revealed that detonation nanodiamonds (NDs) can serve as efficient, biocompatible, and versatile drug delivery platforms. Consequently, further investigations exploring additional therapeutic applications are warranted. Current limitations associated with the non-specific nature of intravenous drugs limit the potential of certain pharmacological agents. One such treatment that could benefit from a stable delivery platform is antibody (Ab) therapy. Determination of Ab adsorption and desorption to a ND surface was subsequently examined using the transforming growth factor beta (TGF-beta) antibody as a model therapeutic. ND-Ab complexes were found to be stable in water through enzyme-linked immunosorbent assays (ELISAs), UV-vis spectroscopy and TEM, with no Ab released after ten days. Released Abs were detected in extreme pH solutions (3.5), DMEM (+) serum with pH levels ranging from 4 to 10.5, and inorganic saline solutions. Preserved activity of Abs released in DMEM (+) serum was confirmed using an ELISA. These results suggest ND-Ab complexes are synthesized and stabilized in water and are triggered to release active Abs upon exposure to physiological conditions.
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