Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Transcriptome analysis reveals an activation of MHC-I and MHC-II pathways in chicken trachea immunized with infectious laryngotracheitis virus vaccine

ABSTRACT: Infectious laryngotracheitis (ILT) is an acute, contagious, upper respiratory disease, which is caused by gallid herpesvirus 1 (GaHV-1). Due to the mortality rates up to 70% depending on the virulence of the virus, it is of economic importance of the disease to explore the etiology of the ILT in the poultry industry. In this study, 15-day-old SPF white leghorn chickens were used to transcriptome analysis in chicken trachea immunized with infectious laryngotracheitis virus vaccine. In conclusion, chicken embryo origin (CEO) vaccine activation of the MHC-I and MHC-II pathways provides insight into the molecular mechanism of immune response in chickens, and holds potential for evaluation and design of new ILT vaccines in a manner adapted to the host immune response to the virus. Ten vaccine inoculated birds were randomly divided in two groups. Each group represents one replication of five pooled tissues, for inoculated birds. Control group consists of five birds that received sterile vaccine diluent.

ORGANISM(S): Gallus gallus

SUBMITTER: JosM-CM-) Carrillo

PROVIDER: E-GEOD-46046 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Project description:Like human speech, birdsong is a complex vocal behavior that is acquired by sensorimotor learning based on coordination of auditory input and vocal output to mimic memorized tutor song. Here we investigate neural circuits for vocal learning and production in deafened songbirds to elucidate how sensory-input regulate genetic and epigenetic property of vocal development and its associated gene expression dynamics. Compared with audition-intact birds, in deafened zebra finches, the vocal development is delayed but song crystallization is observed at more than three times later, producing individually different but structured vocal patterns. In contrast to the distinct difference of vocal ontogeny between audition (+) and (-), unexpectedly, developmental regulation of gene expression dynamics is strictly conserved with age-locked trend in vocal motor circuit in both intact and deafened birds, indicating sensory-input independent robustness of developmental gene expression dynamics in the motor circuit for sensorimotor learning. This discrepancy between outward vocal phenotype and inward gene expression dynamics provides new insight into neural regulation at closing of the critical period for vocal learning by two different forms: auditory inputs-dependent M-bM-^@M-^XactiveM-bM-^@M-^Y crystallization and gene expression dynamics-mediated M-bM-^@M-^XpassiveM-bM-^@M-^Y crystallization. We collected brain samples from intact and early-deafened birds (deafened at day-post hatch 17-23) under silent and dark condition. Song nuclei in vocal motor circuit, HVC and RA tissue samples (juvenile; n = 3, young; n = 3, old; n = 3 of intact and early-deafened birds for HVC and RA) were laser-microdissected from total 24 birds (intact; n = 12, early-deafened; n = 12). Each sample was hybridized to a single array, totaling 36 arrays. Birds were selected per slide such that early-deafened birds were paired with intact birds. To minimize possible interslide bias or batch effects, intact and early-deafened bird samples matching with brain area and age conditions were hybridized side by side on same array glass.

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Transcriptome analysis reveals an activation of MHC-I and MHC-II pathways in chicken trachea immunized with infectious laryngotracheitis virus vaccine

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