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Related Experiment Videos

Acrylamide-induced cellular transformation.

Joungjoa Park1, Lisa M Kamendulis, Marvin A Friedman

  • 1Division of Toxicology, Department of Pharmacology and Toxicology, Indiana University School of Medicine, 635 Barnhill Dr., MS 1021, Indianapolis, Indiana 46202, USA.

Toxicological Sciences : an Official Journal of the Society of Toxicology
|January 29, 2002
PubMed
Summary

Acrylamide monomer induces cellular transformation in Syrian hamster embryo cells. This effect is linked to reduced glutathione (GSH) levels, suggesting thiol status is critical for acrylamide toxicity.

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Area of Science:

  • Toxicology
  • Cell Biology
  • Biochemistry

Background:

  • Acrylamide monomer is used in various industries and poses occupational exposure risks.
  • While polymeric acrylamide is non-toxic, the monomer has shown toxic effects and carcinogenicity in rodents.
  • The mechanism of acrylamide-induced tumor formation remains unclear.

Purpose of the Study:

  • To investigate acrylamide's potential to induce cellular transformation in Syrian hamster embryo (SHE) cells.
  • To explore the underlying mechanisms of acrylamide-induced cellular transformation, focusing on thiol status and metabolic pathways.

Main Methods:

  • Exposure of SHE cells to varying concentrations of acrylamide.
  • Assessment of morphological transformation in acrylamide-treated cells.

Related Experiment Videos

  • Investigating the role of N-acetyl-L-cysteine (NAC), 1-aminobenzotriazole (ABT), and DL-buthionone-[S,R]-sulfoximine (BSO) in modulating acrylamide's effects.
  • Measurement of intracellular glutathione (GSH) levels.

    • Main Results:

    • Acrylamide (≥0.5 mM) induced significant morphological transformation in SHE cells.
    • N-acetyl-L-cysteine (NAC) reduced acrylamide-induced transformation and prevented GSH depletion.
    • 1-aminobenzotriazole (ABT) did not alter transformation rates.
    • DL-buthionone-[S,R]-sulfoximine (BSO) enhanced transformation and GSH depletion.
    • Acrylamide exposure reduced GSH levels in SHE cells.

    Conclusions:

    • Acrylamide itself, not its P450 metabolites, appears to be responsible for cellular transformation.
    • Cellular thiol status, particularly glutathione (GSH) levels, plays a crucial role in acrylamide-induced morphological transformation.
    • These findings provide insights into the mechanism of acrylamide toxicity and potential protective strategies.