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Lipid Supplementation for Longevity and Gene Transcriptional Analysis in Caenorhabditis elegans
Published on: December 9, 2022
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Stage dependent nutritional regulation of transgenerational longevity
Ilianna G Roussou1, Charalambos Savakis1, Nektarios Tavernarakis2
1B.S.R.C. Alexander Fleming, Vari, Athens, Greece.
Nutrition and Healthy Aging
|December 31, 2016
Summary
Nutritional conditions during development in male fruit flies (Drosophila) impact the lifespan of their grandsons. Larval starvation leads to longer-lived grandsons, demonstrating transgenerational effects on longevity.
Area of Science:
- Evolutionary biology
- Genetics
- Gerontology
Background:
- Parental nutrition influences offspring traits across generations.
- Studies in *Caenorhabditis elegans* suggest transgenerational longevity effects.
- Limited food availability in humans is linked to increased longevity in subsequent generations.
Purpose of the Study:
- Investigate the impact of nutrition on transgenerational longevity in *Drosophila*.
- Determine if these nutritional effects are sex-specific.
- Identify critical developmental stages for nutritional influence.
Main Methods:
- Male *Drosophila* were reared under varied nutritional conditions during larval and adult stages.
- Lifespan analyses were conducted on the F2 generation (grandsons).
- Two *Drosophila* strains were used to assess genetic background effects.
Main Results:
- Grandsons of males starved during larval development exhibited increased longevity.
- Grandsons of well-fed males showed reduced lifespan.
- Nutritional effects on transgenerational longevity were transmitted through the male line in one strain.
- Dietary restriction in adult males significantly impacted grandson lifespan.
Conclusions:
- Nutritional regulation of transgenerational longevity is conserved in *Drosophila*.
- The timing of nutrition during development is crucial for these effects.
- Transgenerational longevity is influenced by paternal dietary restriction in adulthood.
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