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Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds the telomeric...

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Related Experiment Video

Updated: Jun 6, 2026

Techniques to Induce and Quantify Cellular Senescence

Techniques to Induce and Quantify Cellular Senescence

Published on: May 1, 2017

Cellular senescence: putting the paradoxes in perspective.

Judith Campisi¹

¹Buck Institute for Age Research, 8001 Redwood Blvd, Novato, CA 94945, USA. jcampisi@buckinstitute.org

Current Opinion in Genetics & Development

|November 25, 2010

Summary

Cellular senescence, a cell cycle arrest, can suppress tumors but also promote them by secreting factors that influence tissue repair and aging.

Area of Science:

Cellular and Molecular Biology
Oncology
Aging Research

Background:

Cellular senescence is traditionally viewed as a tumor suppressor mechanism that halts cancer cell proliferation.
However, the evolution of a non-lethal anti-cancer mechanism raises questions about its precise role.

Purpose of the Study:

To re-evaluate the dual role of cellular senescence in cancer.
To explore how senescent cells influence the tumor microenvironment and systemic processes.

Main Methods:

Review of recent discoveries regarding the secretory profile of senescent cells.
Analysis of the functional consequences of senescence-associated secretory phenotype (SASP).

Main Results:

Senescent cells secrete growth factors, proteases, and cytokines.

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Last Updated: Jun 6, 2026

Techniques to Induce and Quantify Cellular Senescence

Techniques to Induce and Quantify Cellular Senescence

Published on: May 1, 2017

Induction and Validation of Cellular Senescence in Primary Human Cells

Induction and Validation of Cellular Senescence in Primary Human Cells

Published on: June 20, 2018

SA-β-Galactosidase-Based Screening Assay for the Identification of Senotherapeutic Drugs

SA-β-Galactosidase-Based Screening Assay for the Identification of Senotherapeutic Drugs

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These secretions can mobilize local and systemic environments for tissue repair.

This mobilization can have both beneficial and detrimental effects on the organism.

Conclusions:

Cellular senescence is not solely a tumor suppressor but also a dynamic process with context-dependent roles.
Senescence contributes to tumor suppression, tumor promotion, tissue repair, and aging through its secretory activities.