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Measuring Caenorhabditis elegans Life Span in 96 Well Microtiter Plates

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Published on: March 18, 2011

Valproic acid extends Caenorhabditis elegans lifespan.

Kimberley Evason¹, James J Collins, Cheng Huang

¹Department of Developmental Biology, Washington University School of Medicine, 660 South Euclid Ave., Campus Box 8103, St. Louis, MO 63110, USA.

|February 6, 2008

Summary

The mood stabilizer valproic acid (VA) extends lifespan and delays aging in the model organism C. elegans. Combining VA with other lifespan-extending drugs shows additive effects, suggesting distinct mechanisms for aging intervention.

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Area of Science:

Gerontology
Pharmacology
Molecular Biology

Background:

Aging is a significant factor in human disease and disability.
No current drugs are proven to delay human aging.
The nematode C. elegans is a key model for aging research.

Purpose of the Study:

To identify FDA-approved drugs that can extend C. elegans lifespan.
To investigate the mechanisms by which drugs may delay aging.
To explore potential combination therapies for aging.

Main Methods:

Screening of FDA-approved drugs for lifespan extension in C. elegans.
Assessing age-related functional decline (body movement).
Investigating effects on the insulin/IGF-1 pathway (dauer formation, DAF-16 localization).

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Last Updated: Jul 7, 2026

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Evaluating combination treatments with other lifespan-extending compounds.

Main Results:

Valproic acid (VA), an anticonvulsant, significantly extended C. elegans lifespan.
VA treatment delayed age-related motor function decline.
VA treatment promoted dauer formation and DAF-16 nuclear localization, suggesting insulin/IGF-1 pathway modulation.
Combined VA and trimethadione treatment yielded greater lifespan extension than either drug alone.

Conclusions:

Valproic acid (VA) demonstrates potential as an anti-aging compound.
VA's mechanism may involve the insulin/IGF-1 pathway.
Combination therapy with distinct aging-intervention mechanisms can produce additive benefits.