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Related Experiment Video

Updated: May 24, 2025

Techniques to Induce and Quantify Cellular Senescence

Techniques to Induce and Quantify Cellular Senescence

Published on: May 1, 2017

Chemically Induced Senescence Prompts Functional Changes in Human Microglia-Like Cells.

S Armanville¹, C Tocco¹, Z Haj Mohamad¹

¹Faculty of Pharmacy, University of Montreal, Montreal, Quebec, Canada.

Journal of Immunology Research

|March 5, 2025

Summary

This summary is machine-generated.

Cellular senescence, a state of irreversible cell cycle arrest, drives brain aging and inflammation. Senescent microglia exhibit proinflammatory phenotypes, reduced phagocytosis, and impaired calcium activity, offering insights into human microglia aging.

Keywords:

aging cell senescence human microglia neurodegeneration neuroinflammation

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Published on: January 30, 2014

Area of Science:

Neuroscience
Cell Biology
Immunology

Background:

Cellular senescence, characterized by cell cycle arrest and SASP, contributes to aging and neuroinflammation.
Microglia, the primary immune cells in the CNS, are susceptible to senescence and play a role in brain aging.
Current understanding of human microglia aging is limited due to challenges in accessing primary cells and adequate aging models.

Purpose of the Study:

To investigate the impact of cellular senescence on human microglia.
To establish a model for studying age-related changes in human microglia.
To explore the functional consequences of senescence in microglia.

Main Methods:

Chemically induced senescence in a human immortalized microglia cell line using a cocktail of senescence-inducing molecules.
Assessed proinflammatory phenotype, phagocytic activity, and calcium signaling in senescent microglia.

Main Results:

Chemically induced senescent microglia displayed a proinflammatory phenotype.
Phagocytic activity was reduced in senescent microglia.
Impaired calcium activity was observed in senescent microglia.

Conclusions:

Chemically induced senescence effectively models key features of cellular aging in human microglia.
Senescent microglia exhibit detrimental functional changes relevant to brain aging and neuroinflammation.
This model provides valuable insights into the role of cellular senescence in human microglia aging.