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Related Concept Videos

Aging01:26

Aging

Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
Epigenetic Regulation01:46

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
Epigenetic Regulation01:37

Epigenetic Regulation

Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
Epigenetic Regulation01:46

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
Mitochondria01:37

Mitochondria

Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
Telomeres and Telomerase02:41

Telomeres and Telomerase

In eukaryotic DNA replication, a single-stranded DNA fragment remains at the end of a chromosome after the removal of the final primer. This section of DNA cannot be replicated in the same manner as the rest of the strand because there is no 3’ end to which the newly synthesized DNA can attach. This non-replicated fragment results in gradual loss of the chromosomal DNA during each cell duplication. Additionally, it can induce a DNA damage response by enzymes that recognize single-stranded DNA.

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Related Experiment Video

Updated: Jun 20, 2026

A Suppressor Screen for the Characterization of Genetic Links Regulating Chronological Lifespan in Saccharomyces cerevisiae
10:39

A Suppressor Screen for the Characterization of Genetic Links Regulating Chronological Lifespan in Saccharomyces cerevisiae

Published on: September 17, 2020

Epigenetic factors in aging and longevity.

Silvia Gravina1, Jan Vijg

  • 1Department of Genetics, Albert Einstein College of Medicine, 1301 Morris Park Ave, Bronx, New York, NY 10461, USA. silvia.gravina@einstein.yu.edu

Pflugers Archiv : European Journal of Physiology
|September 22, 2009
PubMed
Summary

Epigenetics, changes not in DNA sequence, influences aging and longevity. Understanding epigenetic mechanisms like DNA methylation can lead to new strategies for age-related diseases.

Area of Science:

  • Gerontology
  • Molecular Biology
  • Epigenetics

Background:

  • Epigenetics involves phenotypic changes without altering DNA sequence.
  • Key mechanisms include chromatin remodeling and DNA methylation.
  • Epigenetic variations transmit through cell division but not typically germline.

Purpose of the Study:

  • Review the role of epigenetics in aging and longevity.
  • Focus on DNA methylation's contribution to aging.
  • Highlight potential for epigenetic-based strategies in age-related diseases.

Main Methods:

  • Literature review on epigenetics and aging.
  • Focus on studies investigating DNA methylation.
  • Analysis of evidence linking epigenetic changes to age-related diseases.

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High-Throughput Behavioral Aging and Lifespan Assays Using the Lifespan Machine
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High-Throughput Behavioral Aging and Lifespan Assays Using the Lifespan Machine

Published on: January 26, 2024

Related Experiment Videos

Last Updated: Jun 20, 2026

A Suppressor Screen for the Characterization of Genetic Links Regulating Chronological Lifespan in Saccharomyces cerevisiae
10:39

A Suppressor Screen for the Characterization of Genetic Links Regulating Chronological Lifespan in Saccharomyces cerevisiae

Published on: September 17, 2020

High-Throughput Behavioral Aging and Lifespan Assays Using the Lifespan Machine
08:53

High-Throughput Behavioral Aging and Lifespan Assays Using the Lifespan Machine

Published on: January 26, 2024

Main Results:

  • Epigenetic alterations are increasingly implicated in aging.
  • DNA methylation patterns change with age and influence longevity.
  • These changes are linked to the etiology of age-related diseases.

Conclusions:

  • Epigenetic mechanisms, particularly DNA methylation, play a significant role in aging.
  • Further understanding can drive the development of novel diagnostics and therapeutics for age-related conditions.
  • Targeting epigenetic pathways offers promise for promoting healthy aging and longevity.