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Related Concept Videos

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,...
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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...
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

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Aging01:26

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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.
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Related Experiment Video

Updated: May 23, 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

Will the real aging Sirtuin please stand up?

Chen-Yu Liao1, Brian K Kennedy

  • 1Buck Institute for Research on Aging, 8001 Redwood Blvd., Novato, CA 94945, USA.

Cell Research
|April 18, 2012
PubMed
Summary
This summary is machine-generated.

Sirtuin research has long explored longevity links. A new study demonstrates that enhancing the SIRT6 protein extends lifespan in mammals, identifying it as a key longevity factor.

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

Published on: September 17, 2020

Related Experiment Videos

Last Updated: May 23, 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

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

Area of Science:

  • Aging research
  • Molecular biology
  • Genetics

Background:

  • Sirtuins (SIRTs) are a class of proteins implicated in aging and longevity.
  • Previous research linked Sirtuin activity to extended lifespan in yeast.
  • A key gap in knowledge was whether Sirtuin enhancement extends lifespan in mammals.

Purpose of the Study:

  • To investigate the role of Sirtuins in mammalian lifespan.
  • To identify specific Sirtuin family members that influence aging.

Main Methods:

  • The study focused on the Sirtuin 6 (SIRT6) protein.
  • Investigated the effects of enhanced SIRT6 expression on lifespan in a mammalian model.

Main Results:

  • Kanfi et al. provide evidence that enhanced Sirtuin expression extends lifespan in mammals.
  • The lesser-known SIRT6 protein was identified as the specific longevity factor.

Conclusions:

  • SIRT6 plays a crucial role in regulating lifespan in mammals.
  • Targeting SIRT6 may offer a novel therapeutic strategy for age-related diseases.