Intestinal toxicity of the new type A trichothecenes, NX and 3ANX - Archive ouverte HAL
Article Dans Une Revue Chemosphere Année : 2022

Intestinal toxicity of the new type A trichothecenes, NX and 3ANX

Alix Pierron
Manon Neves
Sylvie Puel
  • Fonction : Auteur
  • PersonId : 1019569
Yannick Lippi
J. David Miller
  • Fonction : Auteur

Résumé

NX and its acetylated form 3ANX are two new type A trichothecenes produced by Fusarium graminearum whose toxicity is poorly documented. The aim of this study was to obtain a general view of the intestinal toxicity of these toxins. Deoxynivalenol (DON), which differs from NX by the keto group at C8, served as a benchmark. The viability of human intestinal Caco-2 cells decreased after 24 h of exposure to 3 μM NX (−21.4%), 3 μM DON (−20.2%) or 10 μM 3ANX (−17.4%). Histological observations of porcine jejunal explants exposed for 4 h to 10 μM of the different toxins showed interstitial edema and cellular debris. Explants exposed to NX also displayed cell vacuolization, a broken epithelial barrier and high loss of villi. Whole transcriptome profiling revealed that NX, DON and 3ANX modulated 369, 146 and 55 genes, respectively. Functional analyses indicated that the three toxins regulate the same gene networks and signaling pathways mainly; cell proliferation, differentiation, apoptosis and growth, and particularly immune and pro-inflammatory responses. Greater transcriptional impacts were observed with NX than with DON. In conclusion, our data revealed that the three toxins have similar impacts on the intestine but of different magnitude: NX > DON ≫ 3ANX. NX and 3ANX should consequently be included in overall risk analysis linked to the presence of trichothecenes in our diet.

Domaines

Toxicologie
Fichier principal
Vignette du fichier
Pierron et al 2022.pdf (3.5 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03367020 , version 1 (01-06-2023)

Identifiants

Citer

Alix Pierron, Manon Neves, Sylvie Puel, Yannick Lippi, Laura Soler-Vasco, et al.. Intestinal toxicity of the new type A trichothecenes, NX and 3ANX. Chemosphere, 2022, 288 (1), ⟨10.1016/j.chemosphere.2021.132415⟩. ⟨hal-03367020⟩
192 Consultations
87 Téléchargements

Altmetric

Partager

More