Related Experiment Video
Updated: Mar 23, 2026
09:19
Single Myofiber Culture Assay for the Assessment of Adult Muscle Stem Cell Functionality Ex Vivo
Published on: February 15, 2021
5.6K
Visualizing the Functional Heterogeneity of Muscle Stem Cells
Yasuo Kitajima1, Shizuka Ogawa1, Yusuke Ono2
1Department of Stem Cell Biology, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, 852-8523, Japan.
Methods in Molecular Biology (Clifton, N.J.)
|April 8, 2016
Summary
Skeletal muscle stem cells, or satellite cells, show functional differences. New methods allow clonal analysis to study these stem cell dynamics and identify slowly dividing populations crucial for muscle regeneration.
Area of Science:
- Muscle stem cell biology
- Regenerative medicine
- Cellular heterogeneity
Background:
- Satellite cells are skeletal muscle stem cells vital for tissue repair.
- Evidence suggests significant genetic and functional heterogeneity among satellite cells.
- A subset of satellite cells exhibits potent self-renewal and regenerative capacity.
Purpose of the Study:
- To investigate the functional heterogeneity of satellite cells.
- To develop methods for clonal analysis of satellite cells.
- To visualize slowly dividing satellite cell populations.
Main Methods:
- Clonal analysis of satellite cells.
- Methods for visualizing slowly dividing cell populations.
- In vivo transplantation into regenerating muscle niches.
Main Results:
- Demonstration of functional heterogeneity in satellite cell self-renewal and differentiation.
- Identification of a subpopulation with robust stemness and self-renewal capabilities.
- Characterization of committed myogenic progenitors undergoing rapid differentiation.
Conclusions:
- Satellite cell heterogeneity is a key factor in muscle regeneration.
- Clonal analysis provides insights into stem cell dynamics and functional specialization.
- Understanding these differences is crucial for advancing regenerative therapies.
Related Concept Videos
01:21Satellite Stem Cells and Muscular Dystrophy
2.5K
Satellite stem cells or myosatellite cells are quiescent stem cells that Alexander Mauro first identified in 1961. These cells are located between the sarcolemma, the plasma membrane of muscle fibers, and the basal lamina, the connective tissue sheath covering it. These mononucleated cells are activated in response to muscle injury, can transform into myoblasts, and may form or repair muscle fibers. Myosatellite cells can provide additional myonuclei for muscle regeneration or return to a...
2.5K
01:19Multipotency of Hematopoietic Stem Cells
4.1K
The hematopoietic stem cells or HSCs are multipotent, meaning they can differentiate and give rise to all blood and immune cells. HSCs are maintained in the quiescent stage until an external stimulus initiates their differentiation. The multipotent HSCs exist as two heterogeneous populations, long-term repopulating cells (LTRC) and short-term repopulating cells (STRC). The two HSC populations have different surface markers or receptors and are classified based on quiescence and long-term...
4.1K
01:27Source And Potency Of Stem Cells
6.8K
Stem cells are undifferentiated cells with extensive self-renewal properties that help them maintain their population during the fetal and adult stages of life. They can specialize in all cell types of the human body. However, their differential potential may vary and can be classified into five types. Stem cells can be (1) Totipotent, (2) Pluripotent, (3) Multipotent, (4) Oligopotent, and (5) Unipotent. Each stem cell has a specific origin; the fertilized egg or zygote is a totipotent cell and...
6.8K
01:06Multipotency and Niche of Bulge Stem Cell
4.3K
A hair follicle or HF is a small part of the skin that produces the hair shaft. Paul Gerson Unna was the first to observe a bulge in the human hair follicle's outer root sheath (ORS). The bulge is present between the sebaceous gland and the arrector pili muscle and is the niche for hair follicle stem cells (HFSCs). The bulge is also a niche for melanocyte stem cells, and their loss results in graying of hair. The HFSCs express Sox9 and Lhx2, which help them maintain stemness and prevent...
4.3K
01:26Stem Cell Niche
6.6K
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...
6.6K
01:19Mesenchymal Stem Cells
5.9K
Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into most connective tissue cell types, except for hematopoietic cells, depending upon the source of MSCs. For example, bone-marrow-derived MSCs (BM-MSCs) can differentiate into osteocytes, hepatocytes, and pancreatic and neuronal cells. MSCs can be isolated from various sources such as bone marrow, placenta, adipose tissue, teeth, and Wharton’s jelly, a gelatinous substance in the umbilical cord. The ease of their...
5.9K