Selective and efficient immunoprecipitation of the disease-associated form of the prion protein can be mediated by nonspecific interactions between monoclonal antibodies and scrapie-associated fibrils |
| |
Authors: | Morel Nathalie Simon Stéphanie Frobert Yveline Volland Hervé Mourton-Gilles Chantal Negro Alessandro Sorgato Maria Catia Créminon Christophe Grassi Jacques |
| |
Institution: | CEA, Service de Pharmacologie et d'Immunologie, CEA Saclay, 91191 Gif sur Yvette, France. |
| |
Abstract: | Transmissible spongiform encephalopathies are characterized by the accumulation in brain tissues of an abnormal isoform of the prion protein named PrPsc, which is the only direct marker known for transmissible spongiform encephalopathies. Here we show that PrPsc can be specifically immunoprecipitated by using several monoclonal antibodies (mAbs) of various specificities independently of the properties of their binding site (paratope). These results strongly suggest that a significant proportion of mAbs can interact with PrPsc aggregates through nonspecific paratope-independent interactions allowing selective immunoprecipitation of PrPsc when these mAbs are immobilized on a polydisperse solid phase like microbeads. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |