The potential of aging rejuvenation
1Epigenetics & Cellular Senescence Group, Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London UK.
Cell Cycle (Georgetown, Tex.)
|January 3, 2022
Summary
Scientists explore strategies to delay aging, focusing on cellular pathways and extracellular vesicles (EVs) for rejuvenation. These findings offer hope for interventions against age-related decline.
Area of Science:
- Gerontology and cellular biology
- Molecular mechanisms of aging
Background:
- Aging is characterized by declining cellular functions and tissue homeostasis.
- Historically viewed as irreversible, aging is now a target for scientific intervention.
- Rejuvenation strategies aim to counteract age-related decline.
Purpose of the Study:
- To review signaling pathways, cell types, and molecules that delay aging.
- To define novel rejuvenation strategies.
- To emphasize the potential of extracellular vesicles (EVs) in aging research.
Main Methods:
- Literature review of aging research.
- Analysis of molecular and cellular mechanisms.
- Focus on extracellular vesicle (EV) biology.
Main Results:
- Identification of key signaling pathways influencing aging.
- Overview of cellular and molecular factors contributing to longevity.
- Highlighting extracellular vesicles (EVs) as promising rejuvenation agents.
Conclusions:
- Aging is a modifiable process with potential for intervention.
- Extracellular vesicles (EVs) represent a significant frontier in rejuvenation research.
- Further investigation into EVs could lead to novel anti-aging therapies.
Related Concept Videos
The Effect of Aging on Tissues
2.8K
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...
2.8K
Aging
301
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...
301
Whole Body Regeneration
3.6K
Regeneration is the process of restoring injured or lost tissues, organs, or body parts. While simpler organisms generally show greater ability to regenerate their whole body, few complex animals show similarly exceptional regeneration. For example, planarian flatworms have a unique regenerative potential making them a popular study organism among biologists to understand the mechanisms of whole body regeneration. Other organisms, such as hydra, also show extreme regeneration potential;...
3.6K
Mitochondria
15.5K
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,...
15.5K
Renewal of Skin Epidermal Stem Cells
2.7K
The skin is divided into epidermis, dermis, and hypodermis, the skin's outermost, middle, and inner layers. The human epidermal layer regularly undergoes renewal, where old, dead cells are replaced by new cells. Epidermal stem cells or EpiSCs divide and differentiate to restore the lost cells. For the renewal process, some EpiSCs continuously self-renew. In contrast, few others differentiate into transit-amplifying cells, which later form prickle or spinous cells, followed by granular...
2.7K
Tissue Renewal without Stem Cells
1.8K
After cellular or tissue damage, the resident stem cells present in the human body can locally repair and regenerate the damaged tissue or organ. However, even though some tissues do not have stem cells, they can repair and regenerate with the help of pre-existing cells. For example, beta cells of the pancreas and hepatocytes of the liver can divide to renew and regenerate the tissue. Here, both cell division and cell death are well regulated by homeostasis.
However, failure of such a system...
However, failure of such a system...
1.8K


