Cellular stress and epigenetic regulation in adult stem cells
View abstract on PubMed
Summary
This summary is machine-generated.Stem cells maintain tissues but face stress from various factors. Epigenetic alterations are key drivers of this cellular stress, impacting aging and disease.
Area Of Science
- Cellular Biology
- Stem Cell Biology
- Epigenetics
Background
- Stem cells possess self-renewal and differentiation capabilities crucial for tissue repair.
- Stem cell niches are highly regulated environments that protect stem cell potential.
- Cellular and systemic stresses can negatively impact stem cells and their niches, influencing aging and disease.
Purpose Of The Study
- To review the epigenetic responses of adult stem cells to various stressors.
- To highlight the role of epigenetic alterations in cellular stress and stem cell function.
Main Methods
- Literature review of published findings.
- Focus on epigenetic responses to replicative, oxidative, mechanical, and inflammatory stress.
- Analysis of effects on diverse adult stem cell types.
Main Results
- Epigenetic alterations are significant responses to multiple forms of stress on adult stem cells.
- These epigenetic changes have implications for stem cell function and tissue homeostasis.
- Understanding these responses is vital for developing interventions.
Conclusions
- Epigenetic mechanisms are central to how adult stem cells respond to stress.
- Targeting epigenetic alterations may offer therapeutic strategies for maintaining stem cell health and combating age-related diseases.
Related Concept Videos
Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
The stem cell niche is the dynamic microenvironment where stem cells reside. Inside these niches, the cells may remain undifferentiated, undergo high self-renewal, or become lineage-specific progenitors. Stem cells coexist with other niche cells, such as stromal cells. They also interact closely with the ECM. Cell-cell and cell-matrix communication occur via adhesion molecules or soluble factors that signal the stem cells and determine their fate. Stromal cells also provide survival signals to...
The cells of the blastocyst inner cell mass only remain pluripotent for a short time. This state of pluripotency and self-renewal can be maintained in embryonic stem (ES) cell culture by adding specific chemicals or growth factors to ensure the cells can continue dividing and later differentiate into different cell types. In some cases, the cells are grown on a feeder layer of differentiated cells, which provides the growth factors and extracellular matrix components necessary for stem cell...
A stem cell is an unspecialized cell that can divide without limit as needed and can, under specific conditions, differentiate into specialized cells.
Adult stem cells
Adult stem cells are tissue-specific; hence, they divide to develop the tissue from which they originate. One type of adult stem cell is the epithelial stem cell, which gives rise to the keratinocytes in the multiple layers of epithelial cells in the epidermis of the skin. Adult bone marrow has three distinct types of stem cells:...
Stem cell research aims to find ways to use stem cells to regenerate and repair cellular damage. Over time, most adult cells undergo the wear and tear of aging and lose their ability to divide and repair themselves. Stem cells do not display a particular morphology or function. Adult stem cells, which exist as a small subset of cells in most tissues, keep dividing and can differentiate into a number of specialized cells generally formed by that tissue. These cells enable the body to renew and...
All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...

