Mapping Tryptophan Metabolites in Mice
Author Information
Author(s): Perez-Castro Lizbeth, Nawas Afshan F., Kilgore Jessica A., Garcia Roy, Lafita-Navarro M.Carmen, Acosta Paul H., Nogueira Pedro A. S., Williams Noelle S., Conacci-Sorrell Maralice
Primary Institution: Cold Spring Harbor Laboratory
Hypothesis
How are tryptophan and its metabolites distributed across different tissues, sexes, and life stages?
Conclusion
The study found significant variations in tryptophan metabolism based on tissue type, sex, and age, particularly higher levels of certain metabolites in aging males.
Supporting Evidence
- The study systematically quantifies tryptophan metabolites across organs and tissues in vivo.
- Significant organ-, sex-, and age-specific variations in tryptophan metabolism were revealed.
- Higher levels of the oncometabolites I3P and Kyn were found in aging males.
Takeaway
This study looked at how a special building block of proteins called tryptophan is used differently in various parts of the body, depending on age and whether the mice are male or female.
Methodology
The study mapped tryptophan metabolites across various organs and tissues in C57BL/6 mice at different life stages.
Participant Demographics
C57BL/6 mice, both male and female, at three life stages: young (3 weeks), adult (54 weeks), and aged (74 weeks).
Digital Object Identifier (DOI)
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