Unlocking healthy aging through gut microbial tryptophan metabolism
Lianbin Xu1, Teresa G Valencak2, Luzhen Wang1
1College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China.
Pharmacological Research
|May 7, 2026
Summary
Microbial tryptophan metabolism influences healthy aging by maintaining gut function, immune balance, and energy production. Understanding these pathways offers new strategies for preventing and treating age-related diseases.
Area of Science:
- Microbiology
- Aging Research
- Metabolomics
Background:
- Healthy aging is a key research area, with gut microbiota playing a crucial role.
- Tryptophan (Trp) metabolism by gut microbes impacts host health and aging processes.
- Microbiota-host interactions involving Trp metabolites are critical for maintaining homeostasis.
Purpose of the Study:
- To review recent advances in microbial Trp metabolism and its role in healthy aging.
- To evaluate the influence of Trp metabolites on age-related disorders.
- To summarize clinical applications of Trp metabolites for promoting healthy aging.
Main Methods:
- Literature review synthesizing recent findings on microbial Trp metabolism.
- Analysis of mechanisms involving gut function, immune signaling, redox balance, and energy production.
- Evaluation of evidence linking Trp metabolites to age-related diseases and clinical applications.
Main Results:
- Microbial Trp metabolism pathways (kynurenine, indole derivatives, 5-hydroxytryptophan) are vital for homeostasis.
- These pathways impact intestinal function, immune modulation, redox balance, and energy production.
- Microbiota-derived Trp metabolites show potential in preventing and treating age-related disorders.
Conclusions:
- Microbial Trp metabolism is intrinsically linked to human aging.
- Targeting Trp metabolites and enzymes offers novel opportunities for aging interventions.
- This review provides insights for the prevention, diagnosis, and therapy of age-related conditions.
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