The urodele amphibian Pleurodeles waltl has a diverse repertoire of immunoglobulin heavy chains with polyreactive and species-specific features - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Developmental and Comparative Immunology Année : 2015

The urodele amphibian Pleurodeles waltl has a diverse repertoire of immunoglobulin heavy chains with polyreactive and species-specific features

Résumé

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.
Fichier non déposé

Dates et versions

hal-01903862 , version 1 (31-10-2018)

Identifiants

Citer

Coralie Fonte, Arnaud Gruez, Stephanie Ghislin, Jean-Pol Frippiat. The urodele amphibian Pleurodeles waltl has a diverse repertoire of immunoglobulin heavy chains with polyreactive and species-specific features. Developmental and Comparative Immunology, 2015, 53 (2), pp.371-384. ⟨10.1016/j.dci.2015.08.006⟩. ⟨hal-01903862⟩
109 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More