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Rejuvenation Res. 2015 Oct;18(5):458-63. doi: 10.1089/rej.2014.1636. Epub 2015 Aug 20.

Persistence of Long-Term Memory in Vitrified and Revived Caenorhabditis elegans.

Author information

  • 11 Alcor Research Center (ARC) , Alcor Life Extension Foundation, Scottsdale, Arizona.
  • 22 University of Advancing Technology , Tempe, Arizona.
  • 33 CryoBioTech. Engineering School, University of Seville , Seville, Spain .

Abstract

Can memory be retained after cryopreservation? Our research has attempted to answer this long-standing question by using the nematode worm Caenorhabditis elegans, a well-known model organism for biological research that has generated revolutionary findings but has not been tested for memory retention after cryopreservation. Our study's goal was to test C. elegans' memory recall after vitrification and reviving. Using a method of sensory imprinting in the young C. elegans, we establish that learning acquired through olfactory cues shapes the animal's behavior and the learning is retained at the adult stage after vitrification. Our research method included olfactory imprinting with the chemical benzaldehyde (C6H5CHO) for phase-sense olfactory imprinting at the L1 stage, the fast-cooling SafeSpeed method for vitrification at the L2 stage, reviving, and a chemotaxis assay for testing memory retention of learning at the adult stage. Our results in testing memory retention after cryopreservation show that the mechanisms that regulate the odorant imprinting (a form of long-term memory) in C. elegans have not been modified by the process of vitrification or by slow freezing.

PMID:
25867710
PMCID:
PMC4620520
DOI:
10.1089/rej.2014.1636
[PubMed - indexed for MEDLINE]
Free PMC Article
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