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Related Concept Videos

Antiviral Nucleoside Inhibitors01:22

Antiviral Nucleoside Inhibitors

Antiviral Nucleoside InhibitorsAntiviral nucleoside inhibitors are structural analogs of natural nucleosides that interfere with viral DNA or RNA synthesis. These compounds selectively target viral polymerases due to their resemblance to host nucleosides, thereby disrupting viral genome replication.Mechanism of Acyclovir ActionAcyclovir is a guanosine analog with a three-carbon acyclic side chain. It selectively targets herpes simplex virus type 1 (HSV-1), herpes simplex virus type 2 (HSV-2),...
Inhibitors of Viral Protein Synthesis01:30

Inhibitors of Viral Protein Synthesis

Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
RNA Interference01:23

RNA Interference

RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
RNA Interference01:23

RNA Interference

RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
The Antiviral System of Bacteria and Archaea: CRISPR01:23

The Antiviral System of Bacteria and Archaea: CRISPR

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 defense.
Experimental RNAi02:15

Experimental RNAi

RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...

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High-throughput Screening for Broad-spectrum Chemical Inhibitors of RNA Viruses
11:34

High-throughput Screening for Broad-spectrum Chemical Inhibitors of RNA Viruses

Published on: May 5, 2014

[RNA interference as antiviral strategy].

C Neumann-Haefelin1, H E Blum, R Thimme

  • 1Abteilung Innere Medizin II, Universitätsklinikum Freiburg. christoph.neumann-haefelin@uniklinik-freiburg.de

Deutsche Medizinische Wochenschrift (1946)
|November 7, 2008
PubMed
Summary
This summary is machine-generated.

RNA interference, using small interfering RNA (siRNA), inhibits gene expression. MicroRNAs (miRNAs) naturally regulate human genes and show potential in antiviral strategies against infections like hepatitis C virus (HCV).

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

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Area of Science:

  • Molecular Biology
  • Genetics
  • Immunology

Context:

  • RNA interference (RNAi) is a conserved biological process involving small RNA molecules that regulate gene expression.
  • Small interfering RNA (siRNA) functions as an immune defense in various organisms and can be synthetically applied in human cells.
  • MicroRNAs (miRNAs) are endogenous small RNAs crucial for gene regulation in humans, impacting development and cellular processes.

Purpose:

  • To explore the dual role of microRNAs (miRNAs) in the context of hepatitis C virus (HCV) infection.
  • To investigate both virus-promoting and antiviral properties of specific miRNAs during HCV infection.
  • To highlight the potential of understanding miRNA mechanisms for developing novel antiviral therapies.

Summary:

  • RNA interference (RNAi) encompasses gene silencing via small RNA molecules like siRNA, which has natural roles and therapeutic applications.
  • While over 500 miRNAs regulate human gene expression, their involvement in antiviral defense is increasingly recognized.
  • Recent findings reveal specific miRNAs can either promote or inhibit hepatitis C virus (HCV) replication, demonstrating complex interactions.

Impact:

  • Understanding miRNA-HCV interactions can uncover new therapeutic targets for antiviral treatments.
  • Elucidating miRNA mechanisms may pave the way for innovative preventive strategies against viral infections.
  • This research contributes to the broader field of small RNA biology and its implications in human health and disease.