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Epitranscriptomic regulation of viral replication.

Camila Pereira-Montecinos1, Fernando Valiente-Echeverría1, Ricardo Soto-Rifo1

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Biochimica Et Biophysica Acta. Gene Regulatory Mechanisms
|February 22, 2017
PubMed
Summary
This summary is machine-generated.

This review explores viral RNA chemical modifications, focusing on N6-methyladenosine (m6A). These modifications impact viral gene expression and infection outcomes, with m6A playing key roles in HIV-1, HCV, and ZIKV replication.

Keywords:
EpitranscriptomicsGene expressionHCVHIV-1Viral replicationZIKVm(6)A

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Area of Science:

  • Molecular Biology
  • Virology
  • Epitranscriptomics

Background:

  • RNA molecules undergo numerous chemical modifications, including N6-methyladenosine (m6A), inosine (I), pseudouridine (ψ), and 5-methylcytosine (5mC) in eukaryotic mRNA.
  • The reversible nature of m6A modification introduces new regulatory layers in gene expression, forming the basis of epitranscriptomics.
  • Next-generation sequencing and molecular mapping strategies have identified numerous modified transcripts across various tissues and conditions, including viral infections.

Purpose of the Study:

  • To review the chemical modifications of viral RNA.
  • To examine the impact of these modifications on viral gene expression and infection.
  • To emphasize the significant and debated roles of m6A in the replication cycles of HIV-1, HCV, and ZIKV.

Main Methods:

  • Literature review focusing on viral RNA modifications.
  • Analysis of studies employing next-generation sequencing for transcript mapping.
  • Emphasis on research investigating N6-methyladenosine (m6A) in viral replication.

Main Results:

  • Viral RNA can be chemically modified by cellular RNA-modifying enzymes during replication.
  • These modifications influence viral gene expression and the overall infection process.
  • N6-methyladenosine (m6A) has emerged as a critical, albeit controversial, factor in the replication of viruses like HIV-1, HCV, and ZIKV.

Conclusions:

  • Chemical modifications of viral RNA are integral to understanding viral biology.
  • N6-methyladenosine (m6A) modification significantly impacts viral replication, highlighting its importance in epitranscriptomics.
  • Further research is needed to fully elucidate the complex roles of m6A in viral infections.