Project description:White Leghorn chicken eggs were incubated for 18 days and dissected. Brain, breast muscle, bursa Fabricii, heart, kidney, liver, lung, ovary, spleen, and testicle tissues were sampled.
Project description:Expression of known and predicted genes in tissues of Gallus gallus (chicken) pooled from multiple healthy individuals. Two-colour experiments with two different tissues hybridized to each array. Each tissue is arrayed in replicate with dye swaps. Tissues: Bursa of Fabricius, Cerebellum, Cerebral cortex, Eye, Femur with bone marrow, Gallbladder, Gizzard, Heart, Intestine, Kidney, Liver, Lung, Muscle, Ovary, Oviduct, Skin, Spleen, Stomach, Testis, Thymus
Project description:In our previous studies, we found that the bursae of Fabricius in chickens infected with IBDV were severely atrophied and resulted in immune suppression in the chickens. Therefore, we decided to detect the differential expression of miRNA in chickens infected with IBDV by RNA-seq. We then used the data obtained from bursa of Fabricius RNA-seq for gene expression profiling. Our ultimate goal is to study the regulatory mechanisms of host mirnas on IBDV viruses or cells.
Project description:Duck reovirus (DRV) is well-studied aquatic bird virus belonging to the Orthoreovirus genus of the Reoviridae family. The bursa of Fabricius is an immunologically organ against virus invasion. However, the responses of the bursa of Fabricius of Cairna moschata to DRV infection are largely unknown. To investigate the immune responses, the proteomes from the control and two DRV strain infected samples (NH and DJ) were compared. In total, 7075 protein were identified, of which 5625 protein were quantified. A number of differentially expressed proteins (DEPs), including 210 DEPs under the HN10 infection and 55 DEPs under the JD10 infection, were identified. Protein network analysis showed that the DEPs enriched in the serine protease system and the innate immune response clusters. For the serine protease systems, coagulation factor IX, three chains of fibrinogen, and complement C8, C5, and C2s were significantly up-regulated, suggesting that the serine protease-mediated immune might be involved in the responses to the HN10 infection. For the innate and adaptive immune system, RIG-I, MDA5, MAPK20, and IRF3 were significantly up-regulated, indicating their important role in the reorganization of invaded virus. Furthermore, the DEPs among different visceral organs (liver, spleen, and the bursa of Fabricius) were compared. coagulation factor IX was significantly up-regulated in the bursa of fabricius, not in the liver and spleen samples, suggesting an important role of the bursa of fabricius in antivirus. Our data may give a comprehensive resource for investigating the regulation mechanism involved in the responses of the bursa of Fabricius of duck to the DRV infections.
Project description:Analysis of gene expression of Bursa of Fabricius samples of 3 male chickens of 6 breeds revealed differential expression of genes related to Ingenuity pathways immune cell trafficking, cell-mediated immune response, humoral immune response and infectious disease.
Project description:Purpose: To explore the interaction between host and IBDV, RNA-Seq was applied to analyse the transcriptional profiles of the responses of chickens' bursas of Fabricius in the early stage of IBDV infection. Method: Eighteen SPF white leghorn chickens were randomly divided into two groups with 9 chickens for each group: the mock group (the healthy group) and the IBDV-inoculated group (the infection group). Chickens from the infection group were inoculated with 0.1 mL of 103 EID50 IBDV CJ801 stock through eye-nose drops. The chickens from the mock group were kept in a separate isolator and mock challenged with PBS. On days 1, 3 and 7 after infection, 3 chickens from each group were killed for bursa collection. Each bursa was immediately put into liquid nitrogen and then stored in 80 ℃ refrigerator. RNA sequencing was performed with total RNA from bursae from each group at the first two time points and completed by a commercial company. Results: The results displayed that a total of 15546 genes were identified in the chicken bursa libraries. Among the annotated genes, there were 2006 and 4668 differentially expressed genes in the infection group compared with the mock group on day 1 and day 3 post inoculation (1 and 3 dpi), respectively. Moreover, there were 676 common up-regulated and 83 common down-regulated genes in the bursae taken from the chickens infected with IBDV on both 1 and 3 dpi. Meanwhile, there were also some characteristic differentially expressed genes on 1 and 3 dpi. On day 1 after inoculation with IBDV, host responses mainly displayed immune response processes, while metabolic pathways played an important role on day three post infection. Six genes were confirmed by quantitative reverse transcription-PCR. Conclusions: In conclusion, the differential gene expression profile demonstrated with RNA-Seq might offer a better understanding of the molecular interactions between host and IBDV during the early stage of infection.
Project description:Chicken anaemia virus (CAV) causes severe anaemia and immunosuppression in young chickens. Such effects reduce the efficiency of routine vaccinations while aggravating the effects of other pathogens in chicken populations. So far, the host responses to CAV have not been studied in vivo on a whole genome-wide scale. In this study, we compared gene expression profiles of chicken tissues (thymus, bone marrow, bursa of Fabricius and spleen-in vivo) from SPF chickens at 14-day-old following intramuscular inoculation at day-old. A chicken specific-immune microarray (5k) developed at Roslin Institute was used throughout the study. Statistically significant gene expression changes occurred mainly in the thymus (in vivo).
Project description:We have used RNA-seq to examine mRNAs from chicken spleen and bursa of Fabricius of three different condition (non-immunized and non-heat-stressed (24 ± 1℃ for 3 h), immunized (Newcastle disease vaccine) and non-heat-stressed, and immunized and heat-stressed (36 ± 1℃ for 3 h)). To clarify how chicken immune systems responded to heat stress with and without immunization.
Project description:Transcriptional profiling of eight normal adult chicken tissues in 10-week old brown (lohmann brown) hens, the eight tissues include brain, bursa of Fabricius, jejunum, kidney, liver, lung, spleen, thymus. Keywords: normal chicken tissues, transcriptional profiling.