Avian Retrovirus Infection
Avian Retrovirus Infection - Related Videos
02:33
Retroviruses
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2020
Retroviruses and retrotransposons both insert copies of their genetic elements into the genome of the host cell. Thus, the viral genes are passed on when the host genome is replicated or translated. A typical retroviral DNA sequence contains 3-4 genes that encode the different proteins required for its structural assembly and function as a molecular parasite. This DNA is transcribed into a single mRNA, which is very similar in structure to conventional mRNAs, i.e., it is capped at the 5’...
01:10
Retrovirus Life Cycles
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2019
Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the retrovirus to...
01:31
Determining the Minimum Inhibitory Concentration of Enrofloxacin Against Avian Pathogenic E. coli
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2026
Begin with a suspension of avian pathogenic E. coli or APEC in growth media.APEC is a Gram-negative bacterium that infects poultry by entering through the respiratory tract.After breaching the mucosal layer, APEC adhere to epithelial cells, multiply locally, and disrupt the epithelial barrier to enter the bloodstream. The bacteria then spread to multiple organs, causing systemic infection.Add an equal volume of the bacterial suspension to each well of a multi-well plate containing increasing...
01:51
Mechanisms of Retrovirus-induced Cancers
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2021
Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of these viruses are first reverse-transcribed into single and then double-stranded DNA (dsDNA) copies. This dsDNA called proviral DNA then integrates into the host genome. Subsequently, the host cell transcribes the proviral DNA in concert with the chromosomal DNA. This leads to the production of viral RNA and proteins that assemble at the host...
12:09
Avian Influenza Surveillance with FTA Cards: Field Methods, Biosafety, and Transportation Issues Solved
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Cited by 42 •
2011
A method to preserve, detect and sequence RNA from Avian Influenza Viruses was validated and extended using natural faecal samples from birds. This technique removes the necessity of maintaining a cool chain and handling of infectious viruses and can be applied in a 96-well high-throughput setup.
FAQs
A key mechanistic consequence of integration is that viral genetic information becomes associated with the host genome rather than remaining only as incoming RNA. Once established, viral genes may support production of new particles or alter cellular growth-control pathways. This makes integration central to studying how persistent viral genetic effects can connect infection with tumor formation in cancer models.
Insertional mutagenesis provides a route from viral integration to altered cell behavior. When integrated viral material disrupts cellular growth-control pathways, it can change how those pathways regulate cellular growth and contribute to transformation or tumor development. Avian retrovirus models therefore let cancer researchers examine abnormal gene regulation as a mechanistic link between a viral event and a cancer-related phenotype.
Oncogene-focused studies use avian retroviruses to connect gene regulation with transformation and tumor development. These models help researchers ask whether viral genetic effects are associated with altered activity of genes that influence cellular growth, rather than treating infection and cancer as unrelated events. This makes the systems valuable for analyzing viral carcinogenesis within an experimental research framework.
These infections provide a setting for examining host-virus interactions alongside viral replication and cellular growth control. Researchers can consider how viral genetic activity relates to production of new viral particles and how growth-control disruption may be associated with transformation. This combined view links viral behavior to cancer-relevant cellular outcomes without separating replication from its effects on the infected cell.
Because avian retrovirus systems are experimentally tractable, researchers can use them to investigate links among infection, integration, gene regulation, and tumor formation. Their value extends beyond avian disease: the systems support broader cancer-biology questions involving oncogenes, insertional mutagenesis, and viral carcinogenesis. This tractability helps connect defined viral events with changes relevant to tumor biology.
Findings from these models can identify connections between viral genetic activity, disrupted growth-control pathways, and tumor development. Those connections help clarify mechanisms of viral carcinogenesis and support investigation of potential therapeutic targets. In cancer research, the models therefore serve both as tools for studying how abnormal gene regulation contributes to tumors and as a basis for examining which associated processes may be targeted.