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Area of Science:

  • Microbiology
  • Gerontology
  • Virology

Background:

  • The human gut microbiome, including viruses (virome), plays a crucial role in health.
  • Age-related changes in the gut microbiome are well-documented for bacteria, but less is known about the virome.

Purpose of the Study:

  • To investigate age-associated alterations in the human gut virome's ecological composition.
  • To compare viral community dynamics with known bacterial changes in aging individuals.

Main Methods:

  • Analysis of gut virome samples from a cohort across different age groups.
  • Bioinformatic analysis to assess viral taxa abundance and diversity.

Main Results:

  • A significant decline in the abundance of core viral taxa with increasing age.
  • A corresponding enrichment of subdominant viral taxa in older individuals.
  • Observed viral compositional shifts parallel previously reported changes in gut bacteriomes.

Conclusions:

  • The human gut virome undergoes significant ecological restructuring throughout the lifespan.
  • Aging impacts both the bacterial and viral components of the gut microbiome.
  • These findings contribute to understanding the virome's role in aging and age-related health.