Gut Microbial Genetic Variation Prolongs Host Healthy Longevity and Remodels Metabolome and Proteome in Drosophila Melanogaster

Strategic Insights -

Research at Xuzhou Medical University in Xuzhou, People's Republic of China, has made significant breakthroughs in understanding how gut microbial genetic variation impacts host longevity and metabolic status. The study investigated how genetic variations in gut-residing Saccharomyces cerevisiae affect the health and lifespan of Drosophila melanogaster. The research identified 14 yeast mutants that significantly extended the lifespan of D. melanogaster, with 13 mutants enhancing locomotor function in aged flies and two mutants improving reproductive capacity.

Key Takeaways:

  • The study found that 14 yeast mutants significantly extended the lifespan of D. melanogaster, with 13 mutants enhancing locomotor function and two mutants improving reproductive capacity.
  • Metabolomic and proteomic analyses revealed that these mutant yeasts rejuvenate the metabolic state of the aging gut and alter protein levels in tissues outside the gut, with most proteins upregulated by at least two-fold.
  • Terpenoid metabolites such as ergosterol acetate showed strong lifespan-extending effects and may influence energy metabolism.
  • The research established a strong link between gut metabolic status and healthy aging, highlighting the significance of the microbial-host mitochondrial axis in promoting host health and longevity.
  • Genetically engineered probiotics in model organisms offer a promising potential strategy for extending healthy lifespan and warrant further investigation in translational research models.

Statistics:

  • 14 yeast mutants were identified that significantly extended the lifespan of D. melanogaster.
  • 13 mutants enhanced locomotor function in aged flies, and two mutants improved reproductive capacity.
  • 14 mutant yeasts were found to rejuvenate the metabolic state of the aging gut, altering protein levels in tissues outside the gut.
  • 85% of the proteins upregulated by at least two-fold were involved in mitochondrial energy metabolism.

Sources:

  • Gut Microbial Genetic Variation Prolongs Host Healthy Longevity and Remodels Metabolome and Proteome In drosophila Melanogaster. Advanced Science, 2025.
  • Zuobin Zhu et al. Xuzhou Medical University, Key Lab Genet Fnd & Clin Applicat, Jiangsu Engn Ctr Precis Diag & Treatment Res Polyg, Dept. of Genetic, Xuzhou 221000, People's Republic of China. Additional authors include Liying Wang, Ziling Yang, Yulu Pang, Xinyue Wu, Xinrong Zhang, Tao Zhu, Xiaoyue Ding, Pengcheng Zhang, Wei Liu, Yuan Zhou and Ying Li.