Bifidobacterium adolescentis regulates catalase activity and host metabolism and improves healthspan and lifespan in multiple species

Nat Aging. 2021 Nov;1(11):991-1001. doi: 10.1038/s43587-021-00129-0. Epub 2021 Nov 16.

Abstract

To identify candidate bacteria associated with aging, we performed fecal microbiota sequencing in young, middle-aged and older adults, and found lower Bifidobacterium adolescentis abundance in older individuals aged ≥60 years. Dietary supplementation of B. adolescentis improved osteoporosis and neurodegeneration in a mouse model of premature aging (Terc-/-) and increased healthspan and lifespan in Drosophila melanogaster and Caenorhabditis elegans. B. adolescentis supplementation increased the activity of the catalase (CAT) enzyme in skeletal muscle and brain tissue from Terc-/- mice, and suppressed cellular senescence in mouse embryonic fibroblasts. Transgenic deletion of catalase (ctl-2) in C. elegans abolished the effects of B. adolescentis on the lifespan and healthspan. B. adolescentis feeding also led to changes in oxidative stress-associated metabolites in Terc-/- mouse feces. These results suggest a role for B. adolescentis in improving the healthspan and lifespan through the regulation of CAT activity and host metabolism.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Bifidobacterium adolescentis*
  • Caenorhabditis elegans / genetics
  • Catalase
  • Drosophila melanogaster
  • Fibroblasts
  • Longevity
  • Mice

Substances

  • Catalase