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Updated: May 28, 2026
12:08
Telomere Length and Telomerase Activity; A Yin and Yang of Cell Senescence
Published on: May 22, 2013
A challenging epigenetic message: telomerase activity is associated with complex changes in lifestyle
András Falus1, István Marton, Erika Borbényi
1Department of Genetics, Cell and Immunobiology, Semmelweis University, Budapest, Hungary.
Cell Biology International
|October 18, 2011
Summary
The 2009 Nobel Prize highlighted how lifestyle, nutrition, and psychological factors influence telomere length through epigenetic changes. This review explores these molecular and cellular biological factors.
Area of Science:
- Epigenetics and Molecular Biology
- Cellular Biology
- Nutritional Science
- Lifestyle Medicine
Background:
- The 2009 Nobel Prize in Physiology or Medicine identified a link between telomere length and epigenetic modifications.
- Epigenetic effects are influenced by lifestyle, nutrition, and psychological factors.
Purpose of the Study:
- To review the molecular, cell biological, nutritional, and lifestyle factors affecting telomere length.
- To discuss the interplay between epigenetics and telomere dynamics.
Main Methods:
- Literature review of studies on telomere biology and epigenetics.
- Analysis of molecular and cellular mechanisms.
- Examination of nutritional and lifestyle interventions.
Main Results:
- Telomere length is a biomarker for cellular aging, influenced by epigenetic regulation.
- Lifestyle factors like diet, exercise, and stress management can modulate telomere length.
- Nutritional interventions show potential in affecting epigenetic marks related to telomeres.
Conclusions:
- Epigenetic mechanisms are crucial in mediating the impact of lifestyle and nutrition on telomere length.
- Modulating epigenetic factors presents a potential strategy for influencing cellular aging and health outcomes.
- Further research is needed to fully elucidate these complex interactions for therapeutic applications.
Related Concept Videos
02:41Telomeres 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.
02:41Telomeres 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.
01:37Epigenetic 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...
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01:46Epigenetic Regulation
Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
01:46Epigenetic Regulation
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01:29Replication in Eukaryotes
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