The urodele amphibian Pleurodeles waltl has a diverse repertoire of immunoglobulin heavy chains with polyreactive and species-specific features.
Dev Comp Immunol
; 53(2): 371-84, 2015 Dec.
Article
en En
| MEDLINE
| ID: mdl-26277106
ABSTRACT
Urodele amphibians are an interesting model because although they possess the cardinal elements of the vertebrate immune system, their immune response is apparently subdued. This phenomenon, sometimes regarded as a state of immunodeficiency, has been attributed by some authors to limited antibody diversity. We reinvestigated this issue in Pleurodeles waltl, a metamorphosing urodele, and noted that upsilon transcripts of its IgY repertoire were as diverse as alpha transcripts of the mammalian IgA repertoire. Mu transcripts encoding the IgM repertoire were less diverse, but could confer more plasticity. Both isotypes present potential polyreactive features that may confer urodele antibodies with the ability to bind to a variety of antigens. Finally, we observed additional cysteines in CDR1 and 2 of the IGHV5 and IGHV6 domains, some of which specific to urodeles, that could allow the establishment of a disulfide bond between these CDRs. Together, these data suggest that urodele antibody diversity is not as low as previously thought.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Pleurodeles
/
Cadenas Pesadas de Inmunoglobulina
/
Regiones Determinantes de Complementariedad
/
Cisteína
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Revista:
Dev Comp Immunol
Año:
2015
Tipo del documento:
Article
País de afiliación:
Francia