Related Experiment Video

Updated: Jun 17, 2026

Fluorescence-based Neuraminidase Inhibition Assay to Assess the Susceptibility of Influenza Viruses to The Neuraminidase Inhibitor Class of Antivirals
09:31

Fluorescence-based Neuraminidase Inhibition Assay to Assess the Susceptibility of Influenza Viruses to The Neuraminidase Inhibitor Class of Antivirals

Published on: April 15, 2017

Effective siRNAs inhibit the replication of novel influenza A (H1N1) virus

Wu Zhiqiang1, Yang Yaowu, Yang Fan

  • 1State Key Laboratory for Molecular Virology and Genetic Engineering, Institute of Pathogen Biology, Chinese Academy of Medical Sciences, Beijing 100176, PR China.

Antiviral Research
|January 12, 2010
PubMed

Insights

Novel influenza A (H1N1) virus (NIAV) replication was inhibited using RNA interference (RNAi). Ten small interfering RNAs (siRNAs) targeting conserved NIAV genome regions effectively blocked viral replication in A549 cells.

Area of Science:

  • Virology
  • Molecular Biology
  • Biotechnology

Background:

  • A novel influenza A (H1N1) virus (NIAV) emerged globally in 2009.
  • Rapid person-to-person transmission characterized the NIAV outbreak.
  • Antiviral strategies are crucial for managing emerging infectious diseases.

Purpose of the Study:

  • To investigate the efficacy of RNA interference (RNAi) as an antiviral approach against NIAV.
  • To identify specific small interfering RNAs (siRNAs) capable of inhibiting NIAV replication.
  • To assess the potential of RNAi-based therapies for controlling NIAV infections.

Main Methods:

  • Utilized RNA interference (RNAi) technology.
  • Designed ten small interfering RNAs (siRNAs) targeting conserved regions of NIAV genomes.
  • Tested siRNA efficacy in inhibiting NIAV strain A/Beijing/01/2009 replication in A549 cells.

Main Results:

  • Ten selected siRNAs demonstrated significant inhibition of NIAV replication.
  • Effective blocking of NIAV strain A/Beijing/01/2009 in A549 cells was achieved.
  • The study validated RNAi as a potent antiviral strategy against NIAV.

Conclusions:

  • RNA interference (RNAi) is a promising antiviral agent for inhibiting novel influenza A (H1N1) virus (NIAV) replication.
  • Targeting conserved NIAV genome regions with siRNAs offers an effective strategy.
  • This research provides a foundation for developing RNAi-based therapeutics against emerging NIAV infections.

More Related Videos

Development of Cell-type specific anti-HIV gp120 aptamers for siRNA delivery13:47

Development of Cell-type specific anti-HIV gp120 aptamers for siRNA delivery

Published on: June 23, 2011

Evaluation of the Efficacy And Toxicity of RNAs Targeting HIV-1 Production for Use in Gene or Drug Therapy12:03

Evaluation of the Efficacy And Toxicity of RNAs Targeting HIV-1 Production for Use in Gene or Drug Therapy

Published on: September 5, 2016

Related Concept Videos

Inhibitors Of Virion Release01:25

Inhibitors Of Virion Release

Viral replication and dissemination rely on efficient mechanisms for host cell entry, genome replication, assembly, and release. Influenza viruses, such as types A and B, are negative-sense single-stranded RNA viruses with a segmented genome, that depend on two critical surface glycoproteins to carry out these processes: hemagglutinin (HA) and neuraminidase (NA). HA initiates infection by binding to sialic acid residues on the surface of host epithelial cells, facilitating receptor-mediated...
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...
siRNA - Small Interfering RNAs02:30

siRNA - Small Interfering RNAs

Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...
Leaky Scanning02:28

Leaky Scanning

During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA.  Marilyn Kozak discovered that the sequence RCCAUGG (where R stands for...
Influenza01:27

Influenza

Influenza is an acute, highly communicable viral disease that affects the respiratory tract and is responsible for seasonal epidemics worldwide. Influenza A is the most prevalent type associated with widespread outbreaks and is subtyped based on two surface glycoproteins: hemagglutinin (H) and neuraminidase (N), as in H1N1. These glycoproteins are essential for viral infectivity, transmission, and immune recognition. Transmission occurs primarily through respiratory droplets and contaminated...
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...