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Sphingolipid and methionine metabolism in aging
Daniel Adebayo1, Eseiwi Obaseki1, Kashvi Vasudeva1
1Department of Biological Sciences, Wayne State University, Detroit, Michigan 48202, USA.
Journal of Cell Science
|November 14, 2025
Summary
Inhibition of sphingolipid synthesis in budding yeast extends lifespan, potentially by mimicking methionine restriction. Further research is needed to clarify the precise mechanisms linking sphingolipid metabolism, methionine levels, and aging.
Area of Science:
- Cell Biology
- Biochemistry
- Aging Research
Background:
- Sphingolipids are vital for cell membrane structure and organelle function.
- Their synthesis involves coordinated action across multiple organelles.
- Sphingolipid metabolism is altered in aging and related disorders, with complex, species-specific roles.
Purpose of the Study:
- To review the roles of sphingolipids in organelle function.
- To explore the metabolic connections between sphingolipid remodeling, methionine restriction, and aging.
- To understand the poorly understood mechanism by which inhibiting sphingolipid synthesis extends lifespan in budding yeast.
Main Methods:
- Literature review of studies on sphingolipids, aging, and methionine restriction.
- Analysis of the interplay between organelle function and sphingolipid metabolism.
- Examination of findings in budding yeast models.
Main Results:
- Inhibition of sphingolipid synthesis in budding yeast extends lifespan.
- This inhibition may mimic methionine restriction, a known lifespan-extending condition.
- The exact mechanisms by which sphingolipid remodeling affects cellular methionine and aging remain unclear.
Conclusions:
- Sphingolipids play critical roles in cellular homeostasis and aging.
- Metabolic remodeling of sphingolipids is linked to aging and age-related diseases.
- Further investigation into the sphingolipid-methionine-aging axis is warranted.
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