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An antibody with high reactivity for disease-associated α-synuclein reveals extensive brain pathology
Vise andre og tillknytning
2012 (engelsk)Inngår i: Acta Neuropathologica, ISSN 0001-6322, E-ISSN 1432-0533, Vol. 124, nr 1, s. 37-50Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

α-Synuclein is the major protein associated with Lewy body dementia, Parkinson's disease and multiple system atrophy. Since α-synuclein is present in the brain in physiological conditions as a presynaptic protein, it is crucial to characterize disease-associated modifications to develop an in vivo biomarker. With the aim to develop antibodies showing high specificity and sensitivity for disease-associated α-synuclein, synthetic peptides containing different amino acid sequences were used for immunization of mice. After generation of α-synuclein aggregates, ELISA and immunoblotting were used to test the specificity of antibodies. Tissue microarray sections originating from different human α-synucleinopathies were used to compare immunostaining with other, commercially available antibodies. Immunization of mice with the peptide TKEGVVHGVATVAE (amino acid 44-57 of α-synuclein) resulted in the generation of a monoclonal antibody (5G4), which was able to bind aggregated α-synuclein preparation in sandwich ELISA or coated on magnetic beads. 5G4 proved to be superior to other antibodies in comparative immunohistochemical studies by revealing more widespread and distinct α-synuclein pathology. Immunoblotting of human brain tissue revealed an additional band seen in dementia with Lewy bodies, whereas the band representing monomeric α-synuclein was very weak or lacking. In summary, the 5G4 antibody is most promising for re-evaluation of archival material and may offer new perspective for the development of in vivo diagnostic assays for detecting disease-associated α-synuclein in body fluids.

sted, utgiver, år, opplag, sider
2012. Vol. 124, nr 1, s. 37-50
HSV kategori
Forskningsprogram
Patologi
Identifikatorer
URN: urn:nbn:se:uu:diva-171339DOI: 10.1007/s00401-012-0964-xISI: 000305458400003PubMedID: 22370907OAI: oai:DiVA.org:uu-171339DiVA, id: diva2:510627
Tilgjengelig fra: 2012-03-17 Laget: 2012-03-17 Sist oppdatert: 2017-12-07bibliografisk kontrollert

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