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Related Concept Videos

Genomic Imprinting and Inheritance02:30

Genomic Imprinting and Inheritance

Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
Replicative Cell Senescence02:15

Replicative Cell Senescence

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...
Replicative Cell Senescence02:15

Replicative Cell Senescence

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...
Inheritance of Chromatin Structures03:17

Inheritance of Chromatin Structures

Epigenetics is the study of inherited changes in a cell's phenotype without changing the DNA sequences. It provides a form of memory for the differential gene expression pattern to maintain cell lineage, position-effect variegation, dosage compensation, and maintenance of chromatin structures such as telomeres and centromeres. For example, the structure and location of the centromere on chromosomes are epigenetically inherited. Its functionality is not dictated or ensured by the underlying DNA...
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 Regulation01:46

Epigenetic Regulation

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

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Related Experiment Video

Updated: May 30, 2026

A Quantitative Measurement of Reactive Oxygen Species and Senescence-associated Secretory Phenotype in Normal Human Fibroblasts During Oncogene-induced Senescence
13:59

A Quantitative Measurement of Reactive Oxygen Species and Senescence-associated Secretory Phenotype in Normal Human Fibroblasts During Oncogene-induced Senescence

Published on: August 12, 2018

Epigenetics and senescence: learning from the INK4-ARF locus.

Elisabeth Simboeck1, Joana D Ribeiro, Sophia Teichmann

  • 1Centre de Regulació Genómica, Universitat Pompeu Fabra, Barcelona, Spain.

Biochemical Pharmacology
|August 3, 2011
PubMed
Summary

Cellular senescence, a hallmark of aging, also suppresses tumors via epigenetic changes. These alterations in chromatin structure, particularly at the INK4-ARF locus, are crucial for cell cycle exit and cancer prevention.

More Related Videos

Techniques to Induce and Quantify Cellular Senescence
06:51

Techniques to Induce and Quantify Cellular Senescence

Published on: May 1, 2017

Related Experiment Videos

Last Updated: May 30, 2026

A Quantitative Measurement of Reactive Oxygen Species and Senescence-associated Secretory Phenotype in Normal Human Fibroblasts During Oncogene-induced Senescence
13:59

A Quantitative Measurement of Reactive Oxygen Species and Senescence-associated Secretory Phenotype in Normal Human Fibroblasts During Oncogene-induced Senescence

Published on: August 12, 2018

Techniques to Induce and Quantify Cellular Senescence
06:51

Techniques to Induce and Quantify Cellular Senescence

Published on: May 1, 2017

Area of Science:

  • Epigenetics and Molecular Biology
  • Cellular Biology
  • Cancer Research

Background:

  • Cellular senescence is a fundamental aging process.
  • Senescence mechanisms also function in tumor suppression within premalignant cells.
  • The senescent phenotype results from alterations in chromatin architecture.

Purpose of the Study:

  • To explore the epigenetic contributions to cellular senescence.
  • To understand the regulatory networks involved in senescence-associated chromatin changes.
  • To review recent findings linking epigenetics to the senescence pathway.

Main Methods:

  • Investigating the regulation of the INK4-ARF locus.
  • Analyzing epigenetic alterations in senescent cells.
  • Reviewing current literature on epigenetics and senescence.

Main Results:

  • Epigenetic modifications are central to the senescent phenotype.
  • The INK4-ARF locus is a key site for epigenetic regulation in senescence.
  • Epigenetic alterations at the INK4-ARF locus are linked to cancer development.

Conclusions:

  • Epigenetics plays a critical role in regulating cellular senescence.
  • Understanding these epigenetic mechanisms is vital for cancer prevention and aging research.
  • Further research into senescence-associated epigenetic changes is warranted.