A possible involvement of endogenous polyamines in the TNF-alpha cellular sensitivity

Related Experiment Video

Updated: Oct 30, 2026

Determination of the Relative Potency of an Anti-TNF Monoclonal Antibody (mAb) by Neutralizing TNF Using an In Vitro Bioanalytical Method
16:07

Determination of the Relative Potency of an Anti-TNF Monoclonal Antibody (mAb) by Neutralizing TNF Using an In Vitro Bioanalytical Method

Published on: September 16, 2017

P George1, P Louisot, C Levrat

  • 1Department of Biochemistry, INSERM-CNRS 189, Lyon-Sud Medical School, Oullins, France.

FEBS Letters
|April 29, 1998
PubMed

Insights

Tumor necrosis factor-alpha (TNF-alpha) resistance in cells is linked to specific polyamine levels. Spermine presence correlates with resistance, while N1-acetylspermidine indicates sensitivity, impacting mitochondrial permeability.

Area of Science:

  • Cellular Biology
  • Biochemistry
  • Immunology

Background:

  • Tumor necrosis factor-alpha (TNF-alpha) triggers cell death through mechanisms including mitochondrial dysfunction and inner membrane permeability changes (permeability transition).
  • Cytosolic polyamines, particularly spermine, are known inhibitors of this permeability transition, suggesting a role in TNF-alpha resistance.

Purpose of the Study:

  • To investigate the differential distribution of polyamines in TNF-alpha sensitive and resistant cell lines.
  • To determine the correlation between specific polyamine profiles and cellular response to TNF-alpha treatment.
  • To assess the impact of glutamine availability on polyamine content and TNF-alpha responsiveness.

Main Methods:

  • Analysis of polyamine content (spermine, N1-acetylspermidine, spermidine, putrescine) in TNF-alpha resistant (C6) and sensitive (WEHI-164) cell lines.
  • Treatment of cells with TNF-alpha and observation of polyamine distribution and cellular response.
  • Culturing cells in media with and without glutamine to evaluate its effect on polyamine metabolism and TNF-alpha sensitivity.

Main Results:

  • Spermine was detected exclusively in TNF-alpha resistant C6 cells, whereas N1-acetylspermidine was found in TNF-alpha sensitive WEHI-164 cells. Putrescine and spermidine were present in both cell types.
  • TNF-alpha treatment did not alter the qualitative polyamine distribution but induced quantitative changes in sensitive cells.
  • Glutamine omission affected overall polyamine content but not TNF-alpha responsiveness or polyamine distribution patterns.

Conclusions:

  • Cellular resistance to TNF-alpha is associated with the presence of specific polyamines, notably spermine.
  • The polyamine profile, particularly the presence of spermine versus N1-acetylspermidine, serves as a marker for TNF-alpha sensitivity or resistance.
  • Polyamines play a significant role in modulating mitochondrial permeability and cellular responses to TNF-alpha.

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