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Updated: May 25, 2026

Techniques to Induce and Quantify Cellular Senescence

Techniques to Induce and Quantify Cellular Senescence

Published on: May 1, 2017

MicroRNAs and their roles in aging.

Thalyana Smith-Vikos¹, Frank J Slack

¹Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06520, USA.

Journal of Cell Science

|February 2, 2012

Summary

MicroRNAs (miRNAs) regulate aging by affecting lifespan, tissue aging, and cellular senescence. Further research will explore the precise mechanisms by which these small RNAs govern the aging process.

Area of Science:

* Molecular Biology
* Gerontology
* Genetics

Background:

* MicroRNAs (miRNAs) are short non-coding RNAs that regulate gene expression post-transcriptionally.
* miRNAs have been recently identified to control aging processes and lifespan in model organisms like *C. elegans*.
* Differential expression of miRNAs during aging has been observed in both *C. elegans* and mammals, with implications for cellular senescence.

Purpose of the Study:

* To review the diverse regulatory roles of microRNAs in aging processes.
* To highlight how specific miRNAs influence organism lifespan, tissue aging, and cellular senescence.
* To discuss future research directions for understanding miRNA-mediated aging mechanisms.

Main Methods:

* Review of existing literature on microRNAs and aging.

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Quantitative Real-Time Polymerase Chain Reaction Evaluation of MicroRNA Expression in Kidney and Serum of Mice with Age-Dependent Renal Impairment

Published on: April 29, 2022

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Techniques to Induce and Quantify Cellular Senescence

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Quantitative Real-Time Polymerase Chain Reaction Evaluation of MicroRNA Expression in Kidney and Serum of Mice with Age-Dependent Renal Impairment

Quantitative Real-Time Polymerase Chain Reaction Evaluation of MicroRNA Expression in Kidney and Serum of Mice with Age-Dependent Renal Impairment

Published on: April 29, 2022

* Analysis of studies identifying differentially expressed miRNAs in aging models (e.g., *C. elegans*, mice).

* Examination of research implicating miRNAs in cellular senescence in human cell lines.

Main Results:

* miRNAs play significant roles in regulating organism lifespan, influenced by pathways like insulin/IGF-1 signaling and DNA damage.
* Numerous miRNAs exhibit altered expression patterns during aging in various species.
* Specific miRNAs are involved in the regulation of cellular senescence, contributing to aging mechanisms.

Conclusions:

* MicroRNAs are key regulators of aging at multiple levels: organismal, tissue, and cellular.
* Understanding miRNA functions in aging can elucidate fundamental biological mechanisms.
* Future studies are needed to fully unravel the complex mechanisms of miRNA-mediated aging control.