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Comprehensive Assessment of Germline Chemical Toxicity Using the Nematode Caenorhabditis elegans
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Comprehensive Assessment of Germline Chemical Toxicity Using the Nematode Caenorhabditis elegans

Published on: February 22, 2015

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Cryoprotectant toxicity in Caenorhabditis elegans

Patricia M Tedesco1, Garrett J Schumacher1, Thomas E Johnson2

  • 1Institute for Behavioral Genetics, University of Colorado, Boulder, USA.

Cryobiology
|December 12, 2018
PubMed

Insights

The cryoprotectant M22 harms Caenorhabditis elegans survival and development in a dose-dependent way. However, certain insulin-like signaling pathway mutants and the drug afatinib show resistance to M22 toxicity.

Area of Science:

  • Cryobiology
  • Toxicology
  • Developmental Biology

Background:

  • Cryoprotective agents are crucial for preserving biological samples and organs.
  • M22 is a common vitrification solution used in organ transplantation.
  • Understanding the toxicity of cryoprotectants in model organisms is essential for improving preservation techniques.

Purpose of the Study:

  • To investigate the toxic effects of the cryoprotectant M22 on the survival and reproductive capacity of Caenorhabditis elegans.
  • To identify genetic factors or pharmacological interventions that confer resistance to M22 toxicity.

Main Methods:

  • Exposure of C. elegans wild-type and mutant strains to various concentrations of M22.
  • Assessment of worm survival, progeny production, and developmental progression.
  • Evaluation of the protective effect of afatinib against M22-induced toxicity.

Main Results:

  • M22 exhibits concentration-dependent toxicity, reducing C. elegans survival and inhibiting development at concentrations of 10% (v/v) and above.
  • Mutants in the insulin-like signaling (ILS) pathway demonstrate increased resistance to M22 toxicity compared to wild-type worms.
  • Afatinib, an anti-cancer drug, effectively protects C. elegans against M22 toxicity without affecting lifespan.

Conclusions:

  • M22 poses a significant toxicity risk to C. elegans, impacting survival and development.
  • The insulin-like signaling pathway plays a role in M22 tolerance.
  • Afatinib represents a potential therapeutic strategy to mitigate cryoprotectant toxicity in C. elegans.
Keywords:
AfatinibCaenorhabditis elegansCryopreservationCryoprotectant toxicityILS mutantsM22Stress resistance

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