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Updated: Aug 3, 2026

Induction and Validation of Cellular Senescence in Primary Human Cells
08:18

Induction and Validation of Cellular Senescence in Primary Human Cells

Published on: June 20, 2018

Life span prediction from the rate of age-related DNA demethylation in normal and cancer cell lines

A L Mazin1

  • 1Laboratory of Molecular Bases of Ontogenesis, A.N. Belozersky Institute of Physico-Chemical Biology, M.V. Lomonosov State University, Moscow.

Experimental Gerontology
|September 1, 1995
PubMed

Insights

Researchers developed a method to predict the Hayflick Limit by analyzing 5-methylcytosine (m5C) DNA content. This DNA methylation analysis offers insights into cellular aging and potential early detection of precrisis and cancer cells.

Area of Science:

  • Epigenetics
  • Cell Biology
  • Genomics

Background:

  • The Hayflick Limit, a phenomenon of limited cell divisions, is crucial for understanding cellular aging.
  • Cellular senescence is linked to epigenetic modifications, including DNA methylation patterns.

Purpose of the Study:

  • To propose and validate a novel method for predicting the Hayflick Limit.
  • To correlate 5-methylcytosine (m5C) DNA content dynamics with cellular lifespan and aging.

Main Methods:

  • Analysis of 5-methylcytosine (m5C) levels in DNA across different cell passages.
  • Quantification of the rate of m5C loss during cell division.
  • Comparison of predicted Hayflick Limit with experimental data across various cell lines.

Main Results:

  • A constant rate of m5C loss during cell division was observed, independent of donor age.
  • The rate of m5C loss showed an inverse relationship with the Hayflick Limit and species lifespan.
  • The predicted Hayflick Limit based on m5C loss demonstrated good agreement with experimental findings in human, hamster, and mouse cells.

Conclusions:

  • The proposed method accurately predicts the Hayflick Limit by monitoring DNA 5-methylcytosine (m5C) content.
  • This epigenetic marker can serve as an early indicator for precrisis and cancerous cells.
  • Age-related m5C loss may stem from accumulating DNA methylation transitions during cell division.

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