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Molecular characterization of VP6-encoding gene of group A human rotavirus samples from central west region of Brazil

Talissa de Moraes Tavares1, Wilia Marta Elsner Diederichsen de Brito, Fabíola Souza Fiaccadori

  • 1Laboratório de Virologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, Brazil.

Journal of Medical Virology
|September 25, 2008
PubMed

Insights

Group A rotavirus, a common cause of childhood gastroenteritis, shows distinct VP6 gene variations. These VP6 genogroups correlate with specific NSP4 genotypes, impacting rotavirus classification and control strategies.

Area of Science:

  • Virology
  • Molecular Biology
  • Public Health

Background:

  • Group A rotaviruses are a primary cause of acute gastroenteritis in children globally.
  • The VP6 protein is a key structural component of rotavirus, determining group and subgroup specificities.
  • Understanding VP6 gene diversity is crucial for rotavirus strain classification and epidemiological surveillance.

Purpose of the Study:

  • To investigate the genetic variability of the VP6 gene in human rotavirus strains from Brazil's Central West region.
  • To analyze the correlation between VP6 genotypes and other rotavirus genes, such as NSP4.

Main Methods:

  • Reverse transcription-polymerase chain reaction (RT-PCR) was used to amplify the VP6-encoding gene.
  • Sequencing and phylogenetic analysis were performed on 154 rotavirus samples.
  • Correlation analysis was conducted between VP6 genogroups and NSP4 genotypes.

Main Results:

  • Two distinct VP6 genogroups (I and II) were identified among the studied rotavirus strains.
  • VP6 genogroup I was consistently associated with NSP4 genotype A.
  • VP6 genogroup II was consistently associated with NSP4 genotype B.

Conclusions:

  • This study reveals significant VP6 gene diversity in rotavirus strains from Brazil's Central West region.
  • The observed association between VP6 genogroups and NSP4 genotypes provides insights into rotavirus genetic structure.
  • Continued molecular surveillance is essential to understand the implications of VP6 diversity for rotavirus control and prevention in Brazil.

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