Carbohydrate recognition by rotaviruses

Xing Yu1, Helen Blanchard

  • 1Institute for Glycomics, Griffith University, Gold Coast campus, QLD, 4222, Australia, x.yu@griffith.edu.au.

Insights

Rotaviruses cause severe childhood diarrhea globally. This review details how rotaviruses attach to cells by recognizing specific sugar structures (glycans) on the cell surface, a critical step for infection.

Area of Science:

  • Virology
  • Molecular Biology
  • Glycobiology

Background:

  • Rotaviruses are a significant global health threat, primarily causing severe diarrhea in children.
  • Understanding rotavirus cell entry mechanisms is crucial for developing effective antiviral strategies.
  • Initial virus-cell attachment, mediated by receptor recognition, is a key step in rotavirus infection.

Purpose of the Study:

  • To review and summarize the current understanding of glycan receptor recognition by rotaviruses.
  • To highlight the critical role of carbohydrate-containing receptors in rotavirus cell attachment.
  • To consolidate knowledge on the molecular interactions governing rotavirus entry.

Main Methods:

  • Literature review of existing studies on rotavirus-glycan interactions.
  • Analysis of published data on rotavirus binding specificities.
  • Synthesis of information on the molecular mechanisms of rotavirus cell attachment.

Main Results:

  • Rotaviruses recognize and bind to specific cell surface glycans (carbohydrate structures).
  • This glycan recognition is essential for the initial attachment of the virus to host cells.
  • Different rotavirus strains may exhibit distinct glycan receptor preferences.

Conclusions:

  • Glycan receptor recognition is a fundamental process in rotavirus infection.
  • Further characterization of these interactions can inform the development of novel therapeutic interventions.
  • Targeting glycan-host interactions presents a potential strategy to block rotavirus entry.

Related Concept Videos

Viruses with RNA Genomes01:29

Viruses with RNA Genomes

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...
1.5K
Retrovirus Life Cycles01:10

Retrovirus Life Cycles

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...
43.1K
Carbohydrate Digestion00:57

Carbohydrate Digestion

Carbohydrate digestion and metabolism break down simple and complex carbohydrates from food into saccharides (i.e., sugars) for the body to use as energy. Carbohydrate digestion starts in the mouth during mastication, or chewing. The masticated carbohydrates remain intact in the stomach. Digestion resumes in the duodenum of the small intestine, where pancreatic alpha-amylase and brush border enzymes of the microvilli convert complex carbohydrates to monosaccharides. Finally, the monosaccharides...
97.4K
Viral Structure00:56

Viral Structure

Viruses are extraordinarily diverse in shape and size, but they all have several structural features in common. All viruses have a core that contains a DNA- or RNA-based genome. The core is surrounded by a protective coat of proteins called the capsid. The capsid is composed of subunits called capsomeres. The capsid and genome-containing core are together known as the nucleocapsid.
59.2K
Size and Structure of Viral Genomes01:26

Size and Structure of Viral Genomes

Viral genomes exhibit remarkable diversity in size, structure, and composition, influencing their replication strategies and interactions with host cells. These genomes consist of either DNA or RNA and may be linear or circular. Additionally, they can be single-stranded or double-stranded, with each configuration affecting how the virus propagates within a host. RNA viruses, for instance, generally have smaller genomes than DNA viruses, a factor that contributes to their high mutation rates and...
1.2K
Membrane Carbohydrates01:30

Membrane Carbohydrates

The plasma membrane is a dynamic barrier composed of lipids, proteins, and carbohydrates. It is the epicenter of many cellular processes required for cell growth and survival. Carbohydrates have unique structural and chemical properties that help the plasma membrane to carry out its functions effectively.
Membrane carbohydrates do not have any hydrophobic region and are exclusively located on the cell's outer surface. The addition of sugar molecules or glycosylation of proteins happens in...
5.9K