Related Experiment Video
Updated: Jun 1, 2026

10:36
Measurements of Physiological Stress Responses in C. Elegans
Published on: May 21, 2020
Cellular stress response pathways and ageing: intricate molecular relationships
Nikos Kourtis1, Nektarios Tavernarakis
1Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, Heraklion, Crete, Greece.
The EMBO Journal
|May 19, 2011
Summary
Aging results from accumulated cellular damage, but organisms can combat this through stress response pathways. Understanding these mechanisms is key to developing therapies for age-related diseases.
Area of Science:
- Gerontology
- Molecular Biology
- Cellular Biology
Background:
- Aging is characterized by the accumulation of molecular damage, influencing cellular function and organismal lifespan.
- Genetic and environmental factors broadly impact aging, with many lifespan-extending interventions targeting cellular stress responses.
- Organismal longevity is closely linked to the capacity to manage intrinsic and extrinsic stressors.
Purpose of the Study:
- To survey molecular mechanisms connecting aging to major stress response pathways.
- To elucidate how these pathways change with age and affect stress response efficacy.
- To discuss the role of each pathway in modulating the aging process.
Main Methods:
- Literature review and synthesis of existing research on aging and stress response pathways.
- Analysis of molecular mechanisms linking cellular damage accumulation to stress response modulation.
- Discussion of the interplay between endogenous stress combat pathways and age-associated pathologies.
Main Results:
- Identified key molecular links between the aging process and primary stress response pathways.
- Demonstrated age-related alterations in the effectiveness of stress response mechanisms.
- Highlighted the contribution of various stress response pathways to the modulation of aging.
Conclusions:
- Effective coping with stress is fundamental to longevity.
- Understanding the reciprocal relationship between stress responses and aging is crucial for developing new therapeutic strategies.
- Targeting endogenous stress combat pathways offers a promising avenue for combating age-related diseases.
Related Concept Videos
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...
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...
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...
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...
Regulation of the Unfolded Protein Response
Inositol-requiring kinase one or IRE1 is the most conserved eukaryotic unfolded protein response (UPR) receptor. It is a type I transmembrane protein kinase receptor with a distinctive site-specific RNase activity. As the binding mechanics of the misfolded proteins with the N-terminal domain of IRE-1 are unclear, three binding models — direct, indirect, and allosteric -- are proposed for receptor activation. Nevertheless, it is known that once a misfolded protein associates with IRE1, it...
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 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...

