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Strategies for Tracking Anastasis, A Cell Survival Phenomenon that Reverses Apoptosis
12:55

Strategies for Tracking Anastasis, A Cell Survival Phenomenon that Reverses Apoptosis

Published on: February 16, 2015

Apoptosis and cytotoxins

J A Hickman1, C C Boyle

  • 1School of Biological Sciences, University of Manchester, UK.

British Medical Bulletin
|January 1, 1997
PubMed

Insights

Toxin lethality depends on a cell's ability to undergo apoptosis, not just damage. Cell survival depends on gene expression and environmental factors, impacting how we predict toxicity.

Area of Science:

  • Toxicology
  • Cell Biology
  • Molecular Biology

Background:

  • Xenobiotics can cause cell death through various mechanisms.
  • Apoptosis (programmed cell death) is a common pathway for toxin-induced cytotoxicity.
  • Toxin selectivity is complex and not solely based on damage inflicted.

Purpose of the Study:

  • To investigate the role of apoptosis threshold in determining xenobiotic toxicity.
  • To explore how cellular factors influence susceptibility to cytotoxic agents.
  • To re-evaluate the prediction of organismal toxicity based on cellular responses.

Main Methods:

  • Analysis of gene expression patterns related to apoptosis.
  • Assessment of cellular responses to various xenobiotics.
  • Evaluation of the influence of cellular environment on apoptosis induction.

Main Results:

  • The threshold for apoptosis is a key determinant of xenobiotic lethality.
  • Relative expression of pro- and anti-apoptotic genes influences cell death onset.
  • Cellular phenotype, stress response gene modulation, and trophic environment impact apoptosis threshold.
  • Directly measuring cellular damage does not reliably predict toxicological outcomes.

Conclusions:

  • Toxin selectivity is influenced by a cell's propensity to initiate apoptosis.
  • Predicting toxicity requires understanding dynamic cellular responses, not just static damage.
  • Cellular apoptosis threshold is a critical factor in xenobiotic toxicity and organismal response.

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