Journal: Frontiers in Immunology
Article Title: Genetic reinstatement of RIG-I in chickens reveals insights into avian immune evolution and influenza interaction
doi: 10.3389/fimmu.2025.1680791
Figure Lengend Snippet: H3N1-challenge experiment confirms the exacerbated disease phenotype of RIG-I and RIG-I-RNF135 chickens infected with virulent avian influenza viruses. The generated transgenic chickens were challenged at 28 weeks of age with H3N1 and assessed for different parameters. (A) Viral shedding based on tracheal swabbing and viral RNA load analysis. (B) Probability of survival in the challenged groups. (C) Expression of RIG-I , RNF135 , and influenza-regulated genes in the duodenum, lung, and spleen. (D) Histological assessment of the reproductive tract; WT-MOCK: normal macroscopical and histological appearance of the salpinx; RNF-RIG-I-H3N1: severe atrophy with mild fibrinous peritonitis in the infundibulum (asterisk), severe lymphoplasmacytic salpingitis (arrowheads) (40x), the magnum (20x), and vasculitis in the magnum vessels (200x). (E) Scoring of lesions in the reproductive tract in all challenged groups, starting with the upper row WT-MOCK, WT-H3N1, RIG-I -H3N1, and RIG-I-RNF135 -H3N1; FP, fibrinous peritonitis; LPS, lymphoplasmacytic salpingitis; LPV, lymphoplasmacytic vasculitis; EYP, egg yolk peritonitis. Error bars indicate standard error of mean (SEM); ( ∗ ) indicate statistical differences between groups tested simultaneously ( p < 0.05). Depending on the normal distribution of the data, multiple group comparison was done either with one-way ANOVA or the Independent-Samples Kruskal-Wallis Test. Data indicate the results of H3N1 in vivo experiment, where the dots represent individual chickens analyzed.
Article Snippet: The reaction was prepared by mixing 2.5 μl TaqMan Gene Expression Master Mix (Applied Biosystems), 0.25 μl 20X DNA Binding Dye Sample Loading Reagent (Fluidigm), 0.25 μl 20X EvaGreen DNA binding dye (Biotum) and 2 μl of preamplified cDNA.
Techniques: Infection, Generated, Transgenic Assay, Expressing, Comparison, In Vivo