Related Experiment Video
Updated: Jun 4, 2026

14:32
Deacetylation Assays to Unravel the Interplay between Sirtuins (SIRT2) and Specific Protein-substrates
Published on: February 27, 2016
SIRT-ain relief from age-inducing stress
Dan Zhang1, Yufei Liu, Danica Chen
1Department of Nutritional Science and Toxicology, University of California, Berkeley, CA 94720, USA.
Aging
|February 11, 2011
Summary
Aging leads to functional decline and increased cancer risk. New research on mammalian sirtuin SIRT3 offers insights into aging mechanisms and potential interventions for both aging and cancer.
Area of Science:
- Gerontology and molecular biology, focusing on aging and cellular mechanisms.
Background:
- Aging is a fundamental biological process associated with physiological decline and increased disease risk, including cancer.
- Oxidative stress is a proposed aging factor, but experimental evidence remains inconclusive.
- Calorie restriction (CR) is known to slow aging, yet its precise mechanisms require further elucidation.
- A complex relationship exists between aging and cancer, necessitating interventions targeting both.
Purpose of the Study:
- To explore the role of mammalian sirtuin SIRT3 in aging processes.
- To investigate potential therapeutic strategies for mitigating age-related decline and cancer risk.
Main Methods:
- Review of recent scientific literature on SIRT3 and its relation to aging.
- Analysis of experimental data linking sirtuins to cellular health and disease prevention.
Main Results:
- SIRT3 has emerged as a key player in cellular metabolism and stress resistance.
- Findings suggest SIRT3 influences pathways relevant to both aging and cancer development.
- This research highlights SIRT3 as a potential target for interventions.
Conclusions:
- Mammalian sirtuin SIRT3 offers a promising avenue for understanding and potentially intervening in the aging process.
- Targeting SIRT3 may provide novel strategies to combat age-related diseases, including cancer.
Related Concept Videos
Stress Response System
The stress response system, also known as the fight-or-flight response, is the body's automatic physiological reaction to perceived threats. Hans Selye introduced the concept of General Adaptation Syndrome (GAS) to describe the predictable pattern of changes that occur in response to stress. GAS consists of three sequential stages: alarm, resistance, and exhaustion. This model helps explain how chronic stress can contribute to health problems.
Alarm stage
In the alarm stage, the body's initial...
Alarm stage
In the alarm stage, the body's initial...
Physiological Foundation of Stress
Stress triggers a coordinated physiological response involving the sympathetic nervous system (SNS) and the hypothalamic-pituitary-adrenal (HPA) axis. This dual activation ensures that the body is prepared for both immediate and prolonged stress management. The process begins with the perception of a stressor. This initial phase activates the SNS, leading to the rapid release of adrenaline (epinephrine) from the adrenal glands.
Role of the Sympathetic Nervous System
Adrenaline triggers the...
Role of the Sympathetic Nervous System
Adrenaline triggers the...
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...
Stress
When a force is applied on a body, it undergoes deformation. In order to restore the body to its original shape and/or size, an opposite or restoring force is generated within the body. This restoring force is equal to the magnitude of the applied force, but acts in the opposite direction. The amount of this restoring force developed per unit area of the body is called stress. Stress is a tensor quantity and has the SI unit pascal. Stress can be separated into four broad categories depending...
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...
Stress Prevention and Stress Management Techniques III
Regular exercise and meditation serve as essential tools in managing stress and promoting physical and mental well-being.
The Role of Exercise in Stress Management
Regular physical activity is essential for reducing stress and promoting cardiovascular health. Exercise strengthens the heart, enhances blood flow, keeps blood vessels flexible, and helps lower blood pressure, all of which reduce the body's stress response. Research shows that adults who exercise regularly have nearly half the risk...
The Role of Exercise in Stress Management
Regular physical activity is essential for reducing stress and promoting cardiovascular health. Exercise strengthens the heart, enhances blood flow, keeps blood vessels flexible, and helps lower blood pressure, all of which reduce the body's stress response. Research shows that adults who exercise regularly have nearly half the risk...