Related Experiment Video
Updated: May 10, 2026

08:35
In Situ Immunofluorescent Staining of Autophagy in Muscle Stem Cells
Published on: June 12, 2017
Autophagy - An Emerging Anti-Aging Mechanism
1Sanford-Burnham Medical Research Institute, USA ; Graduate School of Biomedical Sciences, Del E. Webb Neuroscience, Aging and Stem Cell Research Center, Program of Development and Aging, La Jolla, CA, USA.
Summary
Autophagy, a cellular repair process, declines with age, contributing to aging and disease. Enhancing autophagy through genetic mutations can extend lifespan in model organisms.
Area of Science:
- Cellular Biology
- Gerontology
- Molecular Biology
Background:
- Autophagy is a vital cellular process for degrading damaged components and recycling building blocks.
- Aging is characterized by the decline of cellular repair mechanisms and accumulation of damage.
- Declining autophagy contributes to the aging process and age-related diseases.
Purpose of the Study:
- To review recent advances in understanding autophagy's role in aging.
- To explore how genetic studies in model organisms illuminate the aging process.
- To connect autophagy modulation with lifespan extension and age-related disease.
Main Methods:
- Review of genetic studies in model organisms (yeast, mice).
- Analysis of conserved genetic pathways influencing lifespan.
- Investigation of autophagy induction by lifespan-extending perturbations.
Main Results:
- Single-gene mutations can extend lifespan across species.
- Autophagy is induced by interventions that extend lifespan.
- Impaired autophagy is linked to aging and age-related diseases.
Conclusions:
- Autophagy plays a critical role in aging and age-related diseases.
- Modulating autophagy presents a potential therapeutic strategy for aging.
- Genetic insights from model organisms are crucial for understanding aging mechanisms.
Related Concept Videos
Delivery Pathways to the Lysosome
Eukaryotic cells use different mechanisms to eliminate toxic waste obsolete and worn-out substances. Lysosomes play a pivotal role in this, and hence, these substances are carried to the lysosome from other parts of the cell and extracellular space through different pathways. The most elaborately studied pathways to the lysosome are the endocytic pathways.
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
Autophagy
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,...
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
Cellular Injury V: Apoptosis and Autophagy
Cells respond to damage and stress through highly coordinated processes that decide whether they survive or undergo controlled self-destruction. Two major pathways involved in this regulation are apoptosis, a type of programmed cell death, and autophagy, a survival mechanism that helps cells adapt to adverse conditions.ApoptosisApoptosis removes aged or injured cells to maintain tissue balance. During this process, the cell shrinks, chromatin condenses and fragments, and membrane-bound...
Autophagic Cell Death
Christian de Duve discovered “autophagy,” a process in which cellular components are engulfed by membrane-bound organelles called autophagosomes. The autophagosomes then fuse with lysosomes to digest the enclosed contents. Autophagy is generally activated in cells to prevent cell death. However, cell death is triggered when the damage is beyond repair.
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and pro-apoptotic...
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and pro-apoptotic...
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,...
Phagocytosis of Apoptotic Cells
Cells undergoing apoptosis form apoptotic bodies that must be removed immediately to prevent inflammation, autoimmune diseases, and necrosis. Phagocytosis is carried out by professional phagocytes such as macrophages or immature dendritic cells. Non-professional phagocytes such as epithelial cells and fibroblasts also take part in this process; however, they are not as effective as professional phagocytes.
Normal cells contain receptors that prevent them from being recognized by phagocytes.
Normal cells contain receptors that prevent them from being recognized by phagocytes.
