Quality Assessment of Avian Flu CCQM-P232 Study Materials
Ontology highlight
ABSTRACT:
PROVIDER: PRJEB85778 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| ERR14372588.fastq.gz | Fastqsanger.gz | |||
| ERR14372589.fastq.gz | Fastqsanger.gz | |||
| ERR14372590.fastq.gz | Fastqsanger.gz | |||
| ERR14372591.fastq.gz | Fastqsanger.gz | |||
| ERR14372592.fastq.gz | Fastqsanger.gz |
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Project description:Background：Dendritic cells (DCs), have the most important antigen presenting ability and played an irreplaceable role in recognizing and clearing virus. Antiviral responses must rapidly defend against infection while minimizing inflammatory damage, but the mechanisms that regulate the magnitude of response within an infected cell are not well understood. MicroRNA, small non-coding RNAs, that can regulate dendritic cells to inhibit the infection and replication of avian influenza virus. Here, we global analyses how avian DCs response to H9N2 avian influenza virus (AIV) and provide a potential mechanism of how avian microRNA defending H9N2 AIV replication. Results： Here, we global analyses how avian DCs response to H9N2 avian influenza virus (AIV) and provide a potential mechanism of how avian microRNA defending H9N2 AIV replication. First, we found that both active and inactive H9N2 AIV enhance the ability of DCs to present antigens and activate T lymphocytes. Next, total microarray analyses suggested that H9N2 AIV stimulation involved in protein localization, nucleotide binding and leukocyte transendothelial migration and MAPK signal pathways. Moreover, we construct 551 transcription factor (TF)-microRNA-mRNA loops based on the above analyses. Furthermore, we found that HA fragment could not activate DCs, while truncated HA highly increased the immune function of DCs by activating ERK and STAT3 signal pathway. Last, our insight research not only gained that gga-miR1644 might target to MBNL2 to enhanced avian DCs in inhibiting virus replication, but also suggested that gga-miR6675 target to the NLS of PB1 to trigger the silencing of PB1 genes and lead to inhibition of H9N2 avian influenza viral replication. All together, our innovative research will shed new light on the roles of avian microRNA in evoking avian DCs and inhibiting virus replication, which will suggest new strategies to combat avian influenza virus.
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Project description:Sanhong Liu, Shigui Ruan & Xinan Zhang. Nonlinear dynamics of avian influenza epidemic models. Mathematical Biosciences 283 (2017).
Avian influenza is a zoonotic disease caused by the transmission of the avian influenza A virus, such as H5N1 and H7N9, from birds to humans. The avian influenza A H5N1 virus has caused more than 500 human infections worldwide with nearly a 60% death rate since it was first reported in Hong Kong in 1997. The four outbreaks of the avian influenza A H7N9 in China from March 2013 to June 2016 have resulted in 580 human cases including 202 deaths with a death rate of nearly 35%. In this paper, we construct two avian influenza bird-to-human transmission models with different growth laws of the avian population, one with logistic growth and the other with Allee effect, and analyze their dynamical behavior. We obtain a threshold value for the prevalence of avian influenza and investigate the local or global asymptotical stability of each equilibrium of these systems by using linear analysis technique or combining Liapunov function method and LaSalle's invariance principle, respectively. Moreover, we give necessary and sufficient conditions for the occurrence of periodic solutions in the avian influenza system with Allee effect of the avian population. Numerical simulations are also presented to illustrate the theoretical results.
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Project description:Sanhong Liu, Shigui Ruan & Xinan Zhang. Nonlinear dynamics of avian influenza epidemic models. Mathematical Biosciences 283 (2017).
Avian influenza is a zoonotic disease caused by the transmission of the avian influenza A virus, such as H5N1 and H7N9, from birds to humans. The avian influenza A H5N1 virus has caused more than 500 human infections worldwide with nearly a 60% death rate since it was first reported in Hong Kong in 1997. The four outbreaks of the avian influenza A H7N9 in China from March 2013 to June 2016 have resulted in 580 human cases including 202 deaths with a death rate of nearly 35%. In this paper, we construct two avian influenza bird-to-human transmission models with different growth laws of the avian population, one with logistic growth and the other with Allee effect, and analyze their dynamical behavior. We obtain a threshold value for the prevalence of avian influenza and investigate the local or global asymptotical stability of each equilibrium of these systems by using linear analysis technique or combining Liapunov function method and LaSalle's invariance principle, respectively. Moreover, we give necessary and sufficient conditions for the occurrence of periodic solutions in the avian influenza system with Allee effect of the avian population. Numerical simulations are also presented to illustrate the theoretical results.
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Project description:Transcriptional profiling of chicken embryonic fibroblasts (DF-1 cells) comparing the effects of chicken cells transfected with duck RIG-I compared to empty-vector transfected cells following with low or highly pathogenic avian influenza. Goal was to determine the effects of duck RIG-I on influenza-induced immune gene expression. Two-condition experiment. Biological replicates for low pathogenic avian influenza infection: 3 empty-vector transfected replicates, 3 RIG-I transfected replicates. Biological replicates for highly pathogenic influenza infection: 2 empty-vector transfected replicates, 2 RIG-I transfected replicates.
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Project description:Hanl Lee & Angelyn Lao. Transmission dynamics and control strategies assessment of avian influenza A (H5N6) in the Philippines. Infectious Disease Modelling 3 (2018).
Due to the outbreaks of Highly Pathogenic Avian Influenza A (HPAI) H5N6 in the Philippines (particularly in Pampanga and Nueva Ecija) in August 2017, there has been an increase in the need to cull the domestic birds to control the spread of the infection. However, this control method poses a negative impact on the poultry industry. In addition, the pathogenicity and transmissibility of the H5N6 in both the birds and the humans remain largely unknown which call for the necessity to develop more strategic control methods for the virus. In this study, we constructed a mathematical model for the bilinear and half-saturated incidence to compare their corresponding effect on transmission dynamics of H5N6. The simulations of half-saturated incidence model were similar to what occurred during the H5N6 outbreak (2017) in the Philippines. Instead of culling the birds, we implemented other control strategies such as non-medicinal (personal protection and poultry isolation) and medicinal (poultry vaccination) ways to prevent, reduce, and control the rate of the H5N6 virus transmission. Among the proposed control strategies, we have shown that the poultry isolation strategy is still the most effective in reducing the infected birds.
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Due to the outbreaks of Highly Pathogenic Avian Influenza A (HPAI) H5N6 in the Philippines (particularly in Pampanga and Nueva Ecija) in August 2017, there has been an increase in the need to cull the domestic birds to control the spread of the infection. However, this control method poses a negative impact on the poultry industry. In addition, the pathogenicity and transmissibility of the H5N6 in both the birds and the humans remain largely unknown which call for the necessity to develop more strategic control methods for the virus. In this study, we constructed a mathematical model for the bilinear and half-saturated incidence to compare their corresponding effect on transmission dynamics of H5N6. The simulations of half-saturated incidence model were similar to what occurred during the H5N6 outbreak (2017) in the Philippines. Instead of culling the birds, we implemented other control strategies such as non-medicinal (personal protection and poultry isolation) and medicinal (poultry vaccination) ways to prevent, reduce, and control the rate of the H5N6 virus transmission. Among the proposed control strategies, we have shown that the poultry isolation strategy is still the most effective in reducing the infected birds.
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