Abstract
Fluorescent coupling of bovine serum albumin (BSA) and extracellular antigen of melanoma (ECA) using modified carbodiimide method was evaluated enabling BSA to serve as model protein to evaluate the release profiles of different microsphere formulations and uptake in B16 melanoma cells. Properties of the fluorescent labeled BSA (FBSA) including stability, transition temperature and fluorescent intensity were evaluated. It was found that FBSA produced using this method showed comparable transition temperature and fluorescent intensity compared to the commercially available FITC-labeled BSA and demonstrated stability of the fluorescent-protein linkage after overnight treatment with both trypsin and human plasma using fluorescent microscope. This study showed that the modified carbodiimide labeling method can serve as an alternative method for fluorescent labeling of target protein at reasonable cost particularly when sufficient amount of target protein is required for microsphere formulation screening.
Keywords: Carbodiimide, covalent coupling, fluorescent, bovine serum albumin, cross-linking, microspheres, phagocytosis, B16 melanoma
Current Drug Delivery
Title: Labeling of Fluorescent Probes to Albumin Microspheres and B16 Melanoma Extra-Cellular Antigen
Volume: 7 Issue: 3
Author(s): Yin Hwa Lai and Martin J. D'Souza
Affiliation:
Keywords: Carbodiimide, covalent coupling, fluorescent, bovine serum albumin, cross-linking, microspheres, phagocytosis, B16 melanoma
Abstract: Fluorescent coupling of bovine serum albumin (BSA) and extracellular antigen of melanoma (ECA) using modified carbodiimide method was evaluated enabling BSA to serve as model protein to evaluate the release profiles of different microsphere formulations and uptake in B16 melanoma cells. Properties of the fluorescent labeled BSA (FBSA) including stability, transition temperature and fluorescent intensity were evaluated. It was found that FBSA produced using this method showed comparable transition temperature and fluorescent intensity compared to the commercially available FITC-labeled BSA and demonstrated stability of the fluorescent-protein linkage after overnight treatment with both trypsin and human plasma using fluorescent microscope. This study showed that the modified carbodiimide labeling method can serve as an alternative method for fluorescent labeling of target protein at reasonable cost particularly when sufficient amount of target protein is required for microsphere formulation screening.
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Cite this article as:
Hwa Lai Yin and J. D'Souza Martin, Labeling of Fluorescent Probes to Albumin Microspheres and B16 Melanoma Extra-Cellular Antigen, Current Drug Delivery 2010; 7 (3) . https://dx.doi.org/10.2174/156720110791560982
DOI https://dx.doi.org/10.2174/156720110791560982 |
Print ISSN 1567-2018 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5704 |
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