RNA N6-methyladenosine methylation in influenza A virus infection

Xueer Liu1, Weiqiang Chen2, Kangsheng Li1

  • 1Department of Microbiology and Immunology, Guangdong Provincial Key Laboratory of Infectious Disease and Molecular Immunopathology, Shantou University Medical College, Shantou, Guangdong, China.

PubMed

Insights

N6-methyladenosine (m6A) modification regulates influenza A virus (IAV) infection and host immunity. Understanding m6A

Area of Science:

  • Virology and Molecular Biology
  • Immunology
  • RNA Epigenetics

Background:

  • Influenza A virus (IAV) is a significant pathogen causing acute lung injury and respiratory distress.
  • N6-methyladenosine (m6A) is a key RNA modification influencing gene expression in eukaryotes.
  • m6A plays a critical role in regulating viral infections, including IAV.

Purpose of the Study:

  • To review the molecular mechanisms of m6A modification in IAV infection.
  • To elucidate the regulatory functions of m6A in viral replication and host immune responses.
  • To provide insights into potential therapeutic strategies against IAV.

Main Methods:

  • Literature review focusing on m6A modification in the context of IAV.
  • Analysis of molecular mechanisms governing m6A's role in viral RNA and host transcripts.
  • Examination of m6A's impact on virus-host interactions and immune evasion.

Main Results:

  • m6A modification impacts IAV lifecycle by altering viral RNA stability and translation.
  • Cellular m6A machinery influences host antiviral responses, affecting IAV pathogenesis.
  • Dysregulation of m6A pathways can exacerbate IAV-induced lung injury.

Conclusions:

  • m6A is a critical regulator of IAV infection and host immune responses.
  • Targeting m6A pathways presents a promising avenue for developing novel anti-IAV therapies.
  • Further research into m6A-mediated virus-host interactions is essential for pandemic preparedness.

Related Concept Videos

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...
5.1K
RNA Editing02:23

RNA Editing

RNA editing is a post-transcriptional modification where a precursor mRNA (pre-mRNA) nucleotide sequence is changed by base insertion, deletion, or modification. The extent of RNA editing varies from a few hundred bases, in mitochondrial DNA of trypanosomes, to a just single base, in nuclear genes of mammals. Even a single base change in the pre-mRNA can convert a codon for one amino acid into the codon for another amino acid or a stop codon. This type of re-coding can significantly affect the...
9.0K
RNA Stability01:53

RNA Stability

Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
33.5K
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...
6.1K
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...
16.7K
Viral Mutations00:36

Viral Mutations

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...
32.2K