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- W2040331007 abstract "To assess the ability of gold nanoparticles (GNPs) to act as a size-dependent carrier, a synthetic peptide resembling foot-and-mouth disease virus (FMDV) protein was conjugated to GNPs ranging from 2 to 50 nm in diameter (2, 5, 8, 12, 17, 37, and 50 nm). An extra cysteine was added to the C-terminus of the FMDV peptide (pFMDV) to ensure maximal conjugation to the GNPs, which have a high affinity for sulfhydryl groups. The resultant pFMDV-GNP conjugates were then injected into BALB/c mice. Immunization with pFMDV-keyhole limpet hemocyanin (pFMDV-KLH) conjugate was also performed as a control. Blood was obtained from the mice after 4, 6, 8, and 10 weeks and antibody titers against both pFMDV and the carriers were measured. For the pFMDV-GNP immunization, specific antibodies against the synthetic peptide were detected in the sera of mice injected with 2, 5, 8, 12, and 17 nm pFMDV-GNP conjugates. Maximal antibody binding was noted for GNPs of diameter 8-17 nm. The pFMDV-GNPs induced a three-fold increase in the antibody response compared to the response to pFMDV-KLH. However, sera from either immunized mouse group did not exhibit an antibody response to GNPs, while the sera from pFMDV-KLH-immunized mice presented high levels of binding activity against KLH. Additionally, the uptake of pFMDV-GNP in the spleen was examined by inductively coupled plasma mass spectroscopy (ICP-MS) and transmission electron microscopy (TEM). The quantity of GNPs that accumulated in the spleen correlated to the magnitude of the immune response induced by pFMDV-GNP. In conclusion, we demonstrated the size-dependent immunogenic properties of pFMDV-GNP conjugates. Furthermore, we established that GNPs ranging from 8 to 17 nm in diameter may be ideal for eliciting a focused antibody response against a synthetic pFMDV peptide." @default.
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- W2040331007 date "2010-04-19" @default.
- W2040331007 modified "2023-10-14" @default.
- W2040331007 title "Assessment of gold nanoparticles as a size-dependent vaccine carrier for enhancing the antibody response against synthetic foot-and-mouth disease virus peptide" @default.
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- W2040331007 doi "https://doi.org/10.1088/0957-4484/21/19/195101" @default.
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