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Impact of genetic background and experimental reproducibility on identifying chemical compounds with robust longevity effects.


ABSTRACT: Limiting the debilitating consequences of ageing is a major medical challenge of our time. Robust pharmacological interventions that promote healthy ageing across diverse genetic backgrounds may engage conserved longevity pathways. Here we report results from the Caenorhabditis Intervention Testing Program in assessing longevity variation across 22 Caenorhabditis strains spanning 3 species, using multiple replicates collected across three independent laboratories. Reproducibility between test sites is high, whereas individual trial reproducibility is relatively low. Of ten pro-longevity chemicals tested, six significantly extend lifespan in at least one strain. Three reported dietary restriction mimetics are mainly effective across C. elegans strains, indicating species and strain-specific responses. In contrast, the amyloid dye ThioflavinT is both potent and robust across the strains. Our results highlight promising pharmacological leads and demonstrate the importance of assessing lifespans of discrete cohorts across repeat studies to capture biological variation in the search for reproducible ageing interventions.

SUBMITTER: Lucanic M 

PROVIDER: S-EPMC5321775 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature

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Impact of genetic background and experimental reproducibility on identifying chemical compounds with robust longevity effects.

Lucanic Mark M   Plummer W Todd WT   Chen Esteban E   Harke Jailynn J   Foulger Anna C AC   Onken Brian B   Coleman-Hulbert Anna L AL   Dumas Kathleen J KJ   Guo Suzhen S   Johnson Erik E   Bhaumik Dipa D   Xue Jian J   Crist Anna B AB   Presley Michael P MP   Harinath Girish G   Sedore Christine A CA   Chamoli Manish M   Kamat Shaunak S   Chen Michelle K MK   Angeli Suzanne S   Chang Christina C   Willis John H JH   Edgar Daniel D   Royal Mary Anne MA   Chao Elizabeth A EA   Patel Shobhna S   Garrett Theo T   Ibanez-Ventoso Carolina C   Hope June J   Kish Jason L JL   Guo Max M   Lithgow Gordon J GJ   Driscoll Monica M   Phillips Patrick C PC  

Nature communications 20170221


Limiting the debilitating consequences of ageing is a major medical challenge of our time. Robust pharmacological interventions that promote healthy ageing across diverse genetic backgrounds may engage conserved longevity pathways. Here we report results from the Caenorhabditis Intervention Testing Program in assessing longevity variation across 22 Caenorhabditis strains spanning 3 species, using multiple replicates collected across three independent laboratories. Reproducibility between test si  ...[more]

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