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Related Concept Videos

Autophagy01:27

Autophagy

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Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
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Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....
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X-linked Traits

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In most mammalian species, females have two X sex chromosomes and males have an X and Y. As a result, mutations on the X chromosome in females may be masked by the presence of a normal allele on the second X. In contrast, a mutation on the X chromosome in males more often causes observable biological defects, as there is no normal X to compensate. Trait variations arising from mutations on the X chromosome are called “X-linked”.
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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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Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.
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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...
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Related Experiment Video

Updated: Jan 25, 2026

Activating Autophagy by Aerobic Exercise in Mice
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Links Between Autophagy and Healthy Aging.

Hiroshi Ebata1, Malene Hansen1

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

Journal of Molecular Biology
|January 23, 2026
PubMed
Summary

Healthy lifestyle choices and longevity interventions can promote aging by enhancing autophagy, a cellular recycling process. Research highlights autophagy

Area of Science:

  • Cellular Biology
  • Aging Research
  • Longevity Science

Background:

  • Aging involves diverse manifestations that can be delayed by healthy habits like diet, exercise, and sleep.
  • Genetic and pharmacological interventions extend lifespan and healthspan across species.
  • Autophagy, a cellular recycling process, is a potential common mechanism for these benefits.

Purpose of the Study:

  • To review how pharmacological and lifestyle factors influence autophagy.
  • To focus on studies demonstrating autophagy's causal role in promoting healthy aging.
  • To provide a roadmap for translating autophagy research into human interventions.

Main Methods:

  • Literature review of studies on autophagy modulation by various factors.
  • Analysis of molecular mechanisms linking interventions to autophagy and aging.
Keywords:
autophagyclearancehealthlongevityproteostasis

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  • Examination of evidence from model organisms and human studies.
  • Main Results:

    • Pharmacological agents, dietary restriction, exercise, sleep, and temperature modulation impact autophagy.
    • Autophagy plays a causal role in extending lifespan and healthspan in model organisms.
    • Human research faces challenges due to limited autophagy monitoring assays and longitudinal studies.

    Conclusions:

    • Autophagy is a key cellular process influenced by lifestyle and interventions, impacting aging.
    • Translating findings from model organisms to human applications requires addressing current research gaps.
    • Further research is needed to develop consistent human interventions for healthy aging based on autophagy.