Embryonic exposure to bisphenol a impairs primordial germ cell migration without jeopardizing male breeding capacity - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Article Dans Une Revue Biomolecules Année : 2019

Embryonic exposure to bisphenol a impairs primordial germ cell migration without jeopardizing male breeding capacity

Résumé

A large amount of chemicals are released to the environment each year. Among them, bisphenol A (BPA) is of utmost concern since it interferes with the reproductive system of wild organisms due to its capacity to bind to hormone receptors. Additionally, BPA epigenotoxic activity is known to affect basic processes during embryonic life. However, its effects on primordial germ cells (PGCs) proliferation and migration, both mechanisms being crucial for gametogenesis, remain unknown. To investigate the effects of BPA on PGCs migration and eventual testicle development, zebrafish embryos were exposed to 100, 2000 and 4000 µg/L BPA during the first 24 h of development. Vasa immunostaining of PGCs revealed that exposure to 2000 and 4000 µg/L BPA impaired their migration to the genital ridge. Two pivotal genes of PGCs migration (cxcr4b and sdf1a) were highly dysregulated in embryos exposed to these doses, whereas DNA methylation and epigenetic marks in PGCs and their surrounding somatic cells were not altered. Once embryos reached adulthood, the morphometric study of their gonads revealed that, despite the reduced number of PGCs which colonized the genital ridges, normal testicles were developed. Although H3K9ac decreased in the sperm from treated fishes, it did not affect the progeny development.
Fichier principal
Vignette du fichier
2019_Lombo_Biomolecules_1.pdf (2.78 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-02625569 , version 1 (26-05-2020)

Licence

Paternité

Identifiants

Citer

M. Lombó, Alexandra Depince, Catherine Labbé, M.P. Herraez. Embryonic exposure to bisphenol a impairs primordial germ cell migration without jeopardizing male breeding capacity. Biomolecules, 2019, 9 (8), pp.1-14. ⟨10.3390/biom9080307⟩. ⟨hal-02625569⟩
14 Consultations
52 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More