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Related Concept Videos

Subviral Agents01:29

Subviral Agents

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Subviral agents are infectious entities that resemble viruses but lack one or more viral components, such as a capsid or essential replication machinery. These agents include viroids, prions, and satellites, each possessing distinct structural and functional characteristics that influence their mode of infection and replication.Viroids are the simplest subviral agents, consisting of circular, single-stranded RNA molecules without a protein coat. They exclusively infect plants, relying entirely...
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The Antiviral System of Bacteria and Archaea: CRISPR01:23

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CRISPR stands for Clustered Regularly Interspaced Short Palindromic Repeats is a adaptive immune system found in bacteria and archaea that protects against viral infections. This system enables prokaryotic cells to identify, remember, and neutralize foreign genetic elements, primarily bacteriophages, by storing fragments of the invader’s DNA as a genetic memory.The CRISPR immune response begins during an initial infection. Cas (CRISPR-associated) proteins play a central role in this...
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Viruses with RNA Genomes01:29

Viruses with RNA Genomes

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RNA viruses are categorized into positive-strand, negative-strand, or double-stranded groups based on their genomic structure and replication mechanisms. This classification dictates how they exploit host cellular machinery for protein synthesis and replication. Some RNA viruses also utilize reverse transcription as part of their life cycle, further diversifying their replication strategies.Positive-Strand RNA VirusesPositive-strand RNA viruses have genomes that function directly as messenger...
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Retrovirus Life Cycles01:10

Retrovirus Life Cycles

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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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Retroviruses02:33

Retroviruses

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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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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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Early Viral Entry Assays for the Identification and Evaluation of Antiviral Compounds
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Early Viral Entry Assays for the Identification and Evaluation of Antiviral Compounds

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Broad-spectrum antiviral agents.

Jun-Da Zhu1, Wen Meng1, Xiao-Jia Wang1

  • 1Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University Beijing, China.

Frontiers in Microbiology
|June 9, 2015
PubMed
Summary
This summary is machine-generated.

Developing broad-spectrum antiviral agents is crucial for combating viral infections. This review explores current strategies, including targeting viral entry and replication, and modulating host defenses, to create effective treatments.

Keywords:
antiviral agentbroad-spectrumcellular defensereplicationviral entry

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Area of Science:

  • Virology and Pharmaceutics
  • Drug Discovery and Development

Background:

  • The urgent need for effective, broad-spectrum antiviral agents is a shared goal in virology and pharmaceutics.
  • Current antiviral drug development strategies primarily target viral entry, replication, and cellular defense mechanisms.

Purpose of the Study:

  • To review the current knowledge, prospective applications, opportunities, and challenges in developing broad-spectrum antiviral agents.
  • To highlight advancements in identifying promising candidates for antiviral therapies.

Main Methods:

  • High-throughput screening of molecules for antiviral activity.
  • Genetic engineering of peptides to enhance antiviral properties.
  • Functional screening of agents to assess efficacy against viral infections.

Main Results:

  • Identification of promising molecular candidates through various screening methods.
  • Advancements in understanding viral mechanisms and host-pathogen interactions.
  • Development of strategies to intervene in viral infections and control epidemics.

Conclusions:

  • Continued research and development are essential for creating optimal broad-spectrum antiviral agents.
  • Interdisciplinary approaches combining virology and pharmaceutics are key to overcoming challenges in antiviral drug discovery.
  • Effective antiviral agents are critical for managing viral epidemics and improving global health outcomes.