Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

The Effect of Aging on Tissues01:19

The Effect of Aging on Tissues

Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
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...
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,...
Liver Regeneration01:24

Liver Regeneration

The liver is an important organ in vertebrates that plays an essential role in metabolism. It is also responsible for storing and redistributing nutrients such as carbohydrates, fats, and vitamins in the body. Additionally, the liver releases bile salts which are critical for digesting food and eliminating toxic metabolites from the body.
Cells of Liver
The liver comprises four major types of cells— hepatocytes, stellate, Kupffer, and sinusoidal endothelial cells. The hepatocytes are large...
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...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Centenarian SIRT6 variants elevate SIRT6 protein and enhance cellular senescence resistance.

Research square·2026
Same author

Mutagen-induced somatic mutation rate in primary mammalian cells in relation to maximum life span.

Geromedicine·2026
Same author

The aging genome exhibits organized vulnerability to somatic mutations.

bioRxiv : the preprint server for biology·2026
Same author

Evidence for negative selection against somatic mutations induced in normal fibroblasts by <i>N</i>-ethyl-<i>N</i>-nitrosourea.

Genome research·2026
Same author

Toward actionable interventions in human aging (12th ARDD meeting, 2025).

Aging·2026
Same author

High cancer-associated mutational burden in normal blood of xeroderma pigmentosum group C, but not groups A, D, or F.

Blood neoplasia·2026
Same journal

A viral ORFeome library for systems-level genetic dissection of host-pathogen interactions.

Cell·2026
Same journal

Co-option of lysosomal machinery shapes the evolution of the intracellular photosymbiosis supporting coral reefs.

Cell·2026
Same journal

LEF1 and niche factors determine T cell stemness across chronic diseases.

Cell·2026
Same journal

Recurrent patterns of TOP1-mediated neuronal genomic damage shared by major neurodegenerative disorders.

Cell·2026
Same journal

Four-dimensional molecular mapping from a spatial snapshot reveals the dynamics of hair follicle organogenesis.

Cell·2026
Same journal

Whole-cell particle-based digital twin simulations from 4D lattice light-sheet microscopy data.

Cell·2026
See all related articles

Related Experiment Video

Updated: Jun 27, 2026

Deacetylation Assays to Unravel the Interplay between Sirtuins (SIRT2) and Specific Protein-substrates
14:32

Deacetylation Assays to Unravel the Interplay between Sirtuins (SIRT2) and Specific Protein-substrates

Published on: February 27, 2016

Aging: a sirtuin shake-up?

Jan Vijg1, Alexander Y Maslov, Yousin Suh

  • 1Department of Genetics, Albert Einstein College of Medicine, Bronx, NY 10461, USA. jvijg@aecom.yu.edu

Cell
|December 2, 2008
PubMed
Summary
This summary is machine-generated.

Yeast sirtuin (Sir2) maintains genome stability. Mammalian SIRT1 also reorganizes chromatin after DNA damage, promoting stability in mammalian cells.

More Related Videos

Short Session High Intensity Interval Training and Treadmill Assessment in Aged Mice
09:19

Short Session High Intensity Interval Training and Treadmill Assessment in Aged Mice

Published on: February 2, 2019

Related Experiment Videos

Last Updated: Jun 27, 2026

Deacetylation Assays to Unravel the Interplay between Sirtuins (SIRT2) and Specific Protein-substrates
14:32

Deacetylation Assays to Unravel the Interplay between Sirtuins (SIRT2) and Specific Protein-substrates

Published on: February 27, 2016

Short Session High Intensity Interval Training and Treadmill Assessment in Aged Mice
09:19

Short Session High Intensity Interval Training and Treadmill Assessment in Aged Mice

Published on: February 2, 2019

Area of Science:

  • Molecular Biology
  • Genetics
  • Epigenetics

Background:

  • The yeast sirtuin (Sir2) is a histone deacetylase regulating yeast lifespan by maintaining genome stability via chromatin modification.
  • Sirtuins are a conserved family of NAD+-dependent protein deacetylases.

Discussion:

  • Oberdoerffer et al. demonstrate that SIRT1, the mammalian Sir2 homolog, plays a crucial role in DNA damage response.
  • SIRT1 mediates chromatin reorganization following DNA damage in mammalian cells.

Key Insights:

  • SIRT1 is involved in DNA damage-induced chromatin reorganization.
  • This reorganization promotes genome stability in mammalian cells.
  • This finding highlights the conserved role of sirtuins in genome maintenance across species.

Outlook:

  • Further research into SIRT1's role in DNA repair could reveal therapeutic targets for age-related diseases.
  • Understanding SIRT1's function in chromatin dynamics may offer insights into cancer prevention and treatment.