Toxic prefibrillar α-synuclein amyloid oligomers adopt a distinctive antiparallel β-sheet structure
- Autores
- Celej, Maria Soledad; Sarroukh, R.,; Goormaghtigh, E.,; Fidelio, Gerardo Daniel; Ruysschaert, Jean-Marie; Raussens, Vincent
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Parkinson's disease is an age-related movement disorder characterized by the presence in the mid-brain of amyloid deposits of the 140-amino-acid protein AS (α-synuclein). AS fibrillation follows a nucleation polymerization pathway involving diverse transient prefibrillar species varying in size and morphology. Similar to other neurodegenerative diseases, cytotoxicity is currently attributed to these prefibrillar species rather than to the insoluble aggregates. Nevertheless, the underlying molecular mechanisms responsible for cytotoxicity remain elusive and structural studies may contribute to the understanding of both the amyloid aggregation mechanism and oligomer-induced toxicity. It is already recognized that soluble oligomeric AS species adopt β-sheet structures that differ from those characterizing the fibrillar structure. In the present study we used ATR (attenuated total reflection)-FTIR (Fourier-transform infrared) spectroscopy, a technique especially sensitive to β-sheet structure, to get a deeper insight into the β-sheet organization within oligomers and fibrils. Careful spectral analysis revealed that AS oligomers adopt an antiparallel β-sheet structure, whereas fibrils adopt a parallel arrangement. The results are discussed in terms of regions of the protein involved in the early β- sheet interactions and the implications of such conformational arrangement for the pathogenicity associated with AS oligomers. © The Authors Journal compilation © 2012 Biochemical Society.
Fil: Celej, Maria Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; Argentina
Fil: Sarroukh, R.,. Université Libre de Bruxelles; Bélgica
Fil: Goormaghtigh, E.,. Université Libre de Bruxelles; Bélgica
Fil: Fidelio, Gerardo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; Argentina
Fil: Ruysschaert, Jean-Marie. Université Libre de Bruxelles; Bélgica
Fil: Raussens, Vincent. Université Libre de Bruxelles; Bélgica - Materia
-
Α-SYNUCLEIN
AMYLOID OLIGOMER
AMYLOIDOGENESIS
PARKINSON'S DISEASE
SECONDARY STRUCTURE
STRUCTURE-TOXICITY RELATIONSHIP - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/198102
Ver los metadatos del registro completo
id |
CONICETDig_058706f8a714b828fdabe51ee1ce6cdc |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/198102 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Toxic prefibrillar α-synuclein amyloid oligomers adopt a distinctive antiparallel β-sheet structureCelej, Maria SoledadSarroukh, R.,Goormaghtigh, E.,Fidelio, Gerardo DanielRuysschaert, Jean-MarieRaussens, VincentΑ-SYNUCLEINAMYLOID OLIGOMERAMYLOIDOGENESISPARKINSON'S DISEASESECONDARY STRUCTURESTRUCTURE-TOXICITY RELATIONSHIPhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Parkinson's disease is an age-related movement disorder characterized by the presence in the mid-brain of amyloid deposits of the 140-amino-acid protein AS (α-synuclein). AS fibrillation follows a nucleation polymerization pathway involving diverse transient prefibrillar species varying in size and morphology. Similar to other neurodegenerative diseases, cytotoxicity is currently attributed to these prefibrillar species rather than to the insoluble aggregates. Nevertheless, the underlying molecular mechanisms responsible for cytotoxicity remain elusive and structural studies may contribute to the understanding of both the amyloid aggregation mechanism and oligomer-induced toxicity. It is already recognized that soluble oligomeric AS species adopt β-sheet structures that differ from those characterizing the fibrillar structure. In the present study we used ATR (attenuated total reflection)-FTIR (Fourier-transform infrared) spectroscopy, a technique especially sensitive to β-sheet structure, to get a deeper insight into the β-sheet organization within oligomers and fibrils. Careful spectral analysis revealed that AS oligomers adopt an antiparallel β-sheet structure, whereas fibrils adopt a parallel arrangement. The results are discussed in terms of regions of the protein involved in the early β- sheet interactions and the implications of such conformational arrangement for the pathogenicity associated with AS oligomers. © The Authors Journal compilation © 2012 Biochemical Society.Fil: Celej, Maria Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; ArgentinaFil: Sarroukh, R.,. Université Libre de Bruxelles; BélgicaFil: Goormaghtigh, E.,. Université Libre de Bruxelles; BélgicaFil: Fidelio, Gerardo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; ArgentinaFil: Ruysschaert, Jean-Marie. Université Libre de Bruxelles; BélgicaFil: Raussens, Vincent. Université Libre de Bruxelles; BélgicaJournal of the Serbian Chemical Society2012-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/198102Celej, Maria Soledad; Sarroukh, R.,; Goormaghtigh, E.,; Fidelio, Gerardo Daniel; Ruysschaert, Jean-Marie; et al.; Toxic prefibrillar α-synuclein amyloid oligomers adopt a distinctive antiparallel β-sheet structure; Journal of the Serbian Chemical Society; Biochemical Journal; 443; 3; 5-2012; 719-7260264-60211470-8728CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1042/BJ20111924info:eu-repo/semantics/altIdentifier/url/https://pubmed.ncbi.nlm.nih.gov/22316405/info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:05:51Zoai:ri.conicet.gov.ar:11336/198102instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:05:51.293CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Toxic prefibrillar α-synuclein amyloid oligomers adopt a distinctive antiparallel β-sheet structure |
title |
Toxic prefibrillar α-synuclein amyloid oligomers adopt a distinctive antiparallel β-sheet structure |
spellingShingle |
Toxic prefibrillar α-synuclein amyloid oligomers adopt a distinctive antiparallel β-sheet structure Celej, Maria Soledad Α-SYNUCLEIN AMYLOID OLIGOMER AMYLOIDOGENESIS PARKINSON'S DISEASE SECONDARY STRUCTURE STRUCTURE-TOXICITY RELATIONSHIP |
title_short |
Toxic prefibrillar α-synuclein amyloid oligomers adopt a distinctive antiparallel β-sheet structure |
title_full |
Toxic prefibrillar α-synuclein amyloid oligomers adopt a distinctive antiparallel β-sheet structure |
title_fullStr |
Toxic prefibrillar α-synuclein amyloid oligomers adopt a distinctive antiparallel β-sheet structure |
title_full_unstemmed |
Toxic prefibrillar α-synuclein amyloid oligomers adopt a distinctive antiparallel β-sheet structure |
title_sort |
Toxic prefibrillar α-synuclein amyloid oligomers adopt a distinctive antiparallel β-sheet structure |
dc.creator.none.fl_str_mv |
Celej, Maria Soledad Sarroukh, R., Goormaghtigh, E., Fidelio, Gerardo Daniel Ruysschaert, Jean-Marie Raussens, Vincent |
author |
Celej, Maria Soledad |
author_facet |
Celej, Maria Soledad Sarroukh, R., Goormaghtigh, E., Fidelio, Gerardo Daniel Ruysschaert, Jean-Marie Raussens, Vincent |
author_role |
author |
author2 |
Sarroukh, R., Goormaghtigh, E., Fidelio, Gerardo Daniel Ruysschaert, Jean-Marie Raussens, Vincent |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
Α-SYNUCLEIN AMYLOID OLIGOMER AMYLOIDOGENESIS PARKINSON'S DISEASE SECONDARY STRUCTURE STRUCTURE-TOXICITY RELATIONSHIP |
topic |
Α-SYNUCLEIN AMYLOID OLIGOMER AMYLOIDOGENESIS PARKINSON'S DISEASE SECONDARY STRUCTURE STRUCTURE-TOXICITY RELATIONSHIP |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Parkinson's disease is an age-related movement disorder characterized by the presence in the mid-brain of amyloid deposits of the 140-amino-acid protein AS (α-synuclein). AS fibrillation follows a nucleation polymerization pathway involving diverse transient prefibrillar species varying in size and morphology. Similar to other neurodegenerative diseases, cytotoxicity is currently attributed to these prefibrillar species rather than to the insoluble aggregates. Nevertheless, the underlying molecular mechanisms responsible for cytotoxicity remain elusive and structural studies may contribute to the understanding of both the amyloid aggregation mechanism and oligomer-induced toxicity. It is already recognized that soluble oligomeric AS species adopt β-sheet structures that differ from those characterizing the fibrillar structure. In the present study we used ATR (attenuated total reflection)-FTIR (Fourier-transform infrared) spectroscopy, a technique especially sensitive to β-sheet structure, to get a deeper insight into the β-sheet organization within oligomers and fibrils. Careful spectral analysis revealed that AS oligomers adopt an antiparallel β-sheet structure, whereas fibrils adopt a parallel arrangement. The results are discussed in terms of regions of the protein involved in the early β- sheet interactions and the implications of such conformational arrangement for the pathogenicity associated with AS oligomers. © The Authors Journal compilation © 2012 Biochemical Society. Fil: Celej, Maria Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; Argentina Fil: Sarroukh, R.,. Université Libre de Bruxelles; Bélgica Fil: Goormaghtigh, E.,. Université Libre de Bruxelles; Bélgica Fil: Fidelio, Gerardo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; Argentina Fil: Ruysschaert, Jean-Marie. Université Libre de Bruxelles; Bélgica Fil: Raussens, Vincent. Université Libre de Bruxelles; Bélgica |
description |
Parkinson's disease is an age-related movement disorder characterized by the presence in the mid-brain of amyloid deposits of the 140-amino-acid protein AS (α-synuclein). AS fibrillation follows a nucleation polymerization pathway involving diverse transient prefibrillar species varying in size and morphology. Similar to other neurodegenerative diseases, cytotoxicity is currently attributed to these prefibrillar species rather than to the insoluble aggregates. Nevertheless, the underlying molecular mechanisms responsible for cytotoxicity remain elusive and structural studies may contribute to the understanding of both the amyloid aggregation mechanism and oligomer-induced toxicity. It is already recognized that soluble oligomeric AS species adopt β-sheet structures that differ from those characterizing the fibrillar structure. In the present study we used ATR (attenuated total reflection)-FTIR (Fourier-transform infrared) spectroscopy, a technique especially sensitive to β-sheet structure, to get a deeper insight into the β-sheet organization within oligomers and fibrils. Careful spectral analysis revealed that AS oligomers adopt an antiparallel β-sheet structure, whereas fibrils adopt a parallel arrangement. The results are discussed in terms of regions of the protein involved in the early β- sheet interactions and the implications of such conformational arrangement for the pathogenicity associated with AS oligomers. © The Authors Journal compilation © 2012 Biochemical Society. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-05 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/198102 Celej, Maria Soledad; Sarroukh, R.,; Goormaghtigh, E.,; Fidelio, Gerardo Daniel; Ruysschaert, Jean-Marie; et al.; Toxic prefibrillar α-synuclein amyloid oligomers adopt a distinctive antiparallel β-sheet structure; Journal of the Serbian Chemical Society; Biochemical Journal; 443; 3; 5-2012; 719-726 0264-6021 1470-8728 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/198102 |
identifier_str_mv |
Celej, Maria Soledad; Sarroukh, R.,; Goormaghtigh, E.,; Fidelio, Gerardo Daniel; Ruysschaert, Jean-Marie; et al.; Toxic prefibrillar α-synuclein amyloid oligomers adopt a distinctive antiparallel β-sheet structure; Journal of the Serbian Chemical Society; Biochemical Journal; 443; 3; 5-2012; 719-726 0264-6021 1470-8728 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1042/BJ20111924 info:eu-repo/semantics/altIdentifier/url/https://pubmed.ncbi.nlm.nih.gov/22316405/ |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Journal of the Serbian Chemical Society |
publisher.none.fl_str_mv |
Journal of the Serbian Chemical Society |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
_version_ |
1842269931312250880 |
score |
13.13397 |