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Updated: Apr 15, 2026
Isolation and Characterization of Satellite Cells from Rat Head Branchiomeric Muscles
Published on: July 20, 2015
Biological characteristics of muscle-derived satellite cells isolated from rats at different postnatal days
Ren Yu1, Wu Haiqing, Wang Hefei
1Key Laboratory of Mammalian Reproductive Biology and Biotechnology Ministry of Education, Inner Mongolia University, Inner Mongolia, Hohhot, 010021, China.
Insights
Muscle-derived satellite cells (MDSCs) from young rats (P5-P21) are ideal for tissue engineering due to their robust in vitro growth and differentiation potential. Older rat MDSCs (P42) proved difficult to isolate and culture.
Area of Science:
- Cell Biology
- Tissue Engineering
- Developmental Biology
Background:
- Muscle-derived satellite cells (MDSCs) are crucial for muscle regeneration.
- Understanding their developmental potential is key for optimizing tissue engineering strategies.
Purpose of the Study:
- To investigate the in vitro growth and differentiation capacity of rat MDSCs across different postnatal ages.
- To determine the optimal age of donor rats for sourcing MDSCs for tissue engineering applications.
Main Methods:
- MDSCs were isolated from rat skeletal muscle at postnatal days 5, 10, 15, 21, and 42.
- Cells were cultured and induced to differentiate into neurogenic, osteogenic, and myogenic lineages.
- Immunohistochemical staining and morphological analysis were used for identification.
Main Results:
- MDSCs from postnatal days 5-21 exhibited rapid proliferation and successful differentiation into neuronal, osteoblastic, and myoblastic phenotypes.
- MDSCs from P42 rats were challenging to isolate and culture.
- Differentiated cells were confirmed by specific markers (NSE, Alizarin Red, Osteocalcin, Fast Myosin).
Conclusions:
- Rat MDSCs isolated from P5 to P21 skeletal muscle are suitable for tissue engineering due to ease of isolation, culture, and amplification.
- These findings expand the potential source material for regenerative medicine applications.
Abstract:
This study investigated the in vitro growth characteristics and differential potential of muscle-derived satellite cells (MDSCs) derived from rats at different postnatal (P) stages, in order to expand the range of source material for tissue engineering. Rat MDSCs were isolated from P5, P10, P15, P21 and P42 rat skeletal muscles using double enzyme digestion and differential adherent culture. Neurogenic, osteogenic and myogenic induction media were used to induce directed differentiation. Differentiated nerve cells, osteoblasts and myotubes were identified by their morphology and immunohistochemical staining. Most cells transformed into spindle-shaped mononuclear cells after 48 h and proliferated rapidly. MDSCs were difficult to isolate from P42 rats. After neurogenesis, four groups MDSCs formed neuron-specific enolase positive polygonal-shaped dendritic cells. After osteogenesis, P5, P10, P15 and P21 MDSCs formed Alizarin red- and osteocalcin-positive bone nodules. After myogenesis, myotubes were formed and were fast muscle myosin-positive. MDSCs derived from P5, P10, P15 and P21 rat skeletal muscle are easy to isolate, culture and amplify in vitro, which increases the range of source material available for tissue engineering.
