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Related Concept Videos

Viral Mutations00:36

Viral Mutations

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A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...
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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...
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Immune Response Against Viral Pathogens01:29

Immune Response Against Viral Pathogens

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The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
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NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
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Retroviruses02:33

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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’...
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Viral Recombination00:57

Viral Recombination

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Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.
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Arbovirus Infections As Screening Tools for the Identification of Viral Immunomodulators and Host Antiviral Factors
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Arbovirus Infections As Screening Tools for the Identification of Viral Immunomodulators and Host Antiviral Factors

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Virology-the path forward.

Angela L Rasmussen1,2,3, Gigi K Gronvall4, Anice C Lowen5

  • 1Vaccine and Infectious Disease Organization, University of Saskatchewan, Saskatoon, Canada.

Journal of Virology
|January 3, 2024
PubMed
Summary
This summary is machine-generated.

Oversight of virus research in the US is under review. New regulations must balance safety with the need for rapid scientific advancement to combat infectious diseases and future pandemics.

Keywords:
COVID-19SARS-CoV-2biosafetyemergenceoversightvirology

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Area of Science:

  • Virology
  • Biosafety and Biosecurity
  • Public Health Policy

Background:

  • Biosafety and biosecurity oversight of virus research in the United States (US) is currently being re-evaluated.
  • Ensuring safety in virology research is critical, necessitating periodic review of existing oversight frameworks.
  • Past research infrastructure enabled a rapid US response to the COVID-19 pandemic, highlighting the importance of scientific advancement.

Purpose of the Study:

  • To offer perspectives on priorities for revising regulations governing virology research in the US.
  • To ensure that regulatory changes support, rather than impede, essential scientific research.
  • To maintain US strength in addressing pandemic threats and infectious diseases.

Main Methods:

  • This perspective piece is based on expert opinion and analysis of the current regulatory landscape.
  • It reviews the historical context of US virology research and its role in pandemic response.
  • It identifies key areas for consideration in the revision of biosafety and biosecurity rules.

Main Results:

  • The US possesses a strong foundation in virology research, crucial for national health and security.
  • Rapid response to the COVID-19 crisis demonstrated the value of advanced scientific capabilities.
  • Careful consideration is needed to update regulations without hindering scientific progress.

Conclusions:

  • Revised regulations for virology research must carefully balance safety and security with the need for innovation.
  • Empowering scientific research is vital for protecting US citizens from health, economic, and security threats.
  • Prioritizing areas for regulatory revision will strengthen the US's capacity to manage infectious disease challenges.