GO:0014843 growth factor dependent regulation of skeletal muscle satellite cell proliferation: Signaling Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0014843 describes how growth factors such as FGFs and TGF-beta control the proliferation of skeletal muscle satellite cells, the resident stem cells of muscle.
• Satellite cell proliferation is required for postnatal muscle growth and regeneration, and its dysregulation contributes to neuromuscular disorders.
• TGF-beta inhibits satellite cell differentiation while modulating proliferation, illustrating the dual role of growth factor signaling.
• The fibrinolytic system is required for growth factor dependent satellite cell proliferation and invasion, linking extracellular proteolysis to cell cycle entry.
• Cell cycle inhibitors such as p27Kip1 are key brakes on satellite cell proliferation and are regulated by growth factor availability.
• BMP signaling regulates satellite cell dependent postnatal muscle growth, expanding the growth factor families that impinge on this process.
Description
Skeletal muscle satellite cells are resident stem cells located between the basal lamina and the sarcolemma of muscle fibers, and their proliferation is essential for postnatal muscle growth and regeneration. The biological process GO:0014843, growth factor dependent regulation of skeletal muscle satellite cell proliferation, captures the mechanisms by which specific growth factors such as fibroblast growth factors (FGFs) and transforming growth factor beta (TGF-beta) modulate the frequency, rate, or extent of satellite cell proliferation. This term is critical for researchers because satellite cell dysfunction is increasingly recognized as a driver of neuromuscular disorders, and growth factor signaling is a major node for therapeutic intervention. Understanding GO:0014843 helps connect extracellular cues to cell cycle control in muscle stem cells. Growth factor dependent proliferation of satellite cells also requires the cell-associated fibrinolytic system, indicating that pericellular proteolysis is part of the regulatory network. Moreover, androgen regulation of satellite cell function intersects with growth factor signaling, highlighting endocrine inputs into this process. The term is therefore a hub for integrating signaling, cell cycle, and regenerative biology in skeletal muscle.
growth factor dependent regulation of skeletal muscle satellite cell proliferation At A Glance
| GO ID | GO:0014843 |
|---|---|
| GO term | growth factor dependent regulation of skeletal muscle satellite cell proliferation |
| Ontology | biological_process |
| Synonym | none |
| Major function | Regulation of satellite cell proliferation by growth factors such as FGFs and TGF-beta |
| Related growth factors | Fibroblast growth factors (FGFs), transforming growth factor beta (TGF-beta), BMPs, IGF-1 |
| Key cell type | Skeletal muscle satellite cells |
| Physiological context | Postnatal muscle growth and regeneration |
| Disease relevance | Neuromuscular disorders, satellite cell-opathies |
What Is GO:0014843?
GO:0014843 is defined as any process that modulates the frequency, rate, or extent of satellite cell proliferation in a manner dependent on specific growth factor activity, such as fibroblast growth factors and transforming growth factor beta. In other words, it is the growth factor controlled regulation of skeletal muscle satellite cell proliferation, encompassing both stimulatory and inhibitory signals that determine whether these stem cells divide.
Why Is growth factor dependent regulation of skeletal muscle satellite cell proliferation Important in Cell Biology?
GO:0014843 is important because satellite cell proliferation is the rate-limiting step for skeletal muscle regeneration, and growth factors are the primary extracellular regulators of this step. Dysregulation of growth factor dependent satellite cell proliferation contributes to neuromuscular disorders, and understanding the underlying mechanisms can reveal therapeutic targets. Moreover, growth factor signaling intersects with cell cycle inhibitors such as p27Kip1, providing a direct link between extracellular cues and cell cycle machinery. The process also requires the fibrinolytic system, showing that proliferation is coupled to extracellular matrix remodeling. Because TGF-beta inhibits satellite cell differentiation while modulating proliferation, the balance of growth factor signals determines whether satellite cells expand or differentiate. BMP signaling further regulates satellite cell dependent postnatal muscle growth, underscoring the breadth of growth factor families involved.
• Satellite cell proliferation is required for postnatal muscle growth and regeneration.
• Growth factor dependent regulation of satellite cell proliferation is disrupted in neuromuscular disorders.
• TGF-beta inhibits satellite cell differentiation while modulating proliferation, affecting regenerative capacity.
• The fibrinolytic system is required for growth factor dependent satellite cell proliferation and invasion.
• p27Kip1 acts as a key regulator of satellite cell proliferation downstream of growth factor signals.
• Androgens regulate satellite cell function, intersecting with growth factor dependent proliferation.
• BMP signaling regulates satellite cell dependent postnatal muscle growth.
• Meteorin-like facilitates skeletal muscle repair through a Stat3/IGF-1 mechanism, linking growth factor signaling to regeneration.
• TRPV2 in muscle satellite cells is crucial for skeletal muscle remodelling, adding ion channel inputs to growth factor responses.
• Understanding GO:0014843 supports development of cell models for muscle stem cell biology and drug discovery.
What Happens During growth factor dependent regulation of skeletal muscle satellite cell proliferation?
Growth factor sensing and receptor activation
In simple terms: Growth factors bind to receptors on satellite cells and switch on signals that tell the cell to divide.
Satellite cells respond to growth factors such as FGFs and TGF-beta through specific cell surface receptors. This sensing step is the first layer of regulation in GO:0014843, determining whether the cell receives a proliferative or inhibitory signal. The fibrinolytic system is required for growth factor dependent proliferation and invasion, suggesting that receptor activation is coupled to pericellular proteolysis. Androgens can also modulate satellite cell function, indicating that endocrine signals intersect with growth factor sensing.
Intracellular signaling to the cell cycle
In simple terms: Once receptors are activated, signals travel inside the cell to control the machinery that drives cell division.
Growth factor signals converge on cell cycle regulators such as p27Kip1, a key inhibitor of satellite cell proliferation. The balance between proliferative and antiproliferative signals determines whether satellite cells enter S phase. TGF-beta inhibits satellite cell differentiation while modulating proliferation, illustrating that signaling can have distinct effects on proliferation versus differentiation. BMP signaling also regulates satellite cell dependent postnatal muscle growth, showing that multiple growth factor pathways feed into the cell cycle.
Cell cycle entry and proliferation
In simple terms: The cell commits to division and progresses through the cell cycle, increasing satellite cell numbers.
When growth factor signals predominate, satellite cells progress through the cell cycle and proliferate. This proliferation is required for postnatal muscle growth and regeneration. The process is dependent on specific growth factor activity, as defined in GO:0014843. The fibrinolytic system supports this proliferation and the associated invasive behavior of satellite cells.
Feedback and termination of proliferation
In simple terms: Signals that stop proliferation ensure that satellite cells do not divide indefinitely and can differentiate when needed.
TGF-beta can inhibit satellite cell differentiation, and its modulation of proliferation provides a brake on unchecked expansion. Cell cycle inhibitors such as p27Kip1 contribute to terminating proliferation. The interplay between growth factors and inhibitors ensures that satellite cell numbers are matched to regenerative demand. Dysregulation of these feedback mechanisms is linked to neuromuscular disorders.
Key Genes Involved in GO:0014843 growth factor dependent regulation of skeletal muscle satellite cell proliferation
The following genes and proteins are central to growth factor dependent regulation of skeletal muscle satellite cell proliferation, based on published literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| FGF2 | Fibroblast growth factor that stimulates satellite cell proliferation | Growth factor dependent regulation of satellite cell proliferation |
| TGFB1 | Transforming growth factor beta that inhibits satellite cell differentiation and modulates proliferation | Key regulator of satellite cell fate |
| CDKN1B (p27Kip1) | Cell cycle inhibitor that restrains satellite cell proliferation | Key regulator of satellite cell proliferation |
| IGF1 | Growth factor that promotes muscle repair via Stat3/IGF-1 mechanism | Links growth factor signaling to regeneration |
| STAT3 | Transcription factor downstream of Meteorin-like/IGF-1 signaling | Mediates growth factor effects on muscle repair |
| BMP4 | Bone morphogenetic protein that regulates satellite cell dependent muscle growth | BMP signaling in postnatal muscle growth |
| TRPV2 | Ion channel in muscle satellite cells crucial for skeletal muscle remodelling | Adds ion channel input to satellite cell regulation |
| PLAU (uPA) | Fibrinolytic system component required for growth factor dependent proliferation | Links proteolysis to satellite cell proliferation |
| PLAT (tPA) | Fibrinolytic system component involved in satellite cell invasion | Required for growth factor dependent invasion |
| AR | Androgen receptor mediating androgen regulation of satellite cell function | Endocrine regulation of satellite cells |
| MSTN | Myostatin, a TGF-beta family member that regulates muscle growth | TGF-beta superfamily control of satellite cells |
| FGFR1 | Fibroblast growth factor receptor mediating FGF signals | Receptor for FGF-dependent proliferation |
| TGFBR1 | TGF-beta receptor mediating inhibitory signals | Receptor for TGF-beta effects on satellite cells |
| CDK2 | Cyclin-dependent kinase driving cell cycle progression | Downstream effector of growth factor signaling |
| CCND1 | Cyclin D1 promoting G1/S transition | Cell cycle entry in satellite cells |
| PAI1 (SERPINE1) | Plasminogen activator inhibitor modulating fibrinolysis | Regulates fibrinolytic system in satellite cells |
| METRNL | Meteorin-like, a myokine that facilitates muscle repair | Growth factor-like regulation of regeneration |
How Is growth factor dependent regulation of skeletal muscle satellite cell proliferation Regulated?
Growth factor dependent regulation of satellite cell proliferation is controlled by the balance between stimulatory and inhibitory signals. TGF-beta inhibits satellite cell differentiation while modulating proliferation, acting as a key regulatory node. Cell cycle inhibitors such as p27Kip1 provide an intracellular brake that is responsive to growth factor availability. The fibrinolytic system is required for growth factor dependent proliferation and invasion, indicating that extracellular proteolysis is part of the regulatory circuit. BMP signaling regulates satellite cell dependent postnatal muscle growth, adding another layer of growth factor control. Androgens modulate satellite cell function, linking endocrine status to this process. Meteorin-like facilitates muscle repair through a Stat3/IGF-1 mechanism, illustrating cytokine-like regulation of satellite cell activity. TRPV2 in satellite cells is crucial for skeletal muscle remodelling, suggesting ion channel-dependent modulation of growth factor responses.
growth factor dependent regulation of skeletal muscle satellite cell proliferation and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| CDKN1B (p27Kip1) | Impaired satellite cell proliferation | Knockout and point mutation models to assess cell cycle entry |
| TGFB1 | Muscle regeneration failure and fibrosis | Overexpression and knockout models to test TGF-beta effects |
| IGF1 | Muscle wasting and impaired repair | Knock-in and overexpression models to enhance regeneration |
| BMP4 | Postnatal muscle growth defects | Conditional knockout models to study satellite cell dependent growth |
| TRPV2 | Skeletal muscle remodelling defects | Knockout and knock-in models to probe ion channel function |
Neuromuscular disorders and satellite cell-opathies
Satellite cell dysfunction is involved in neuromuscular disorders, and these conditions are increasingly described as satellite cell-opathies. Disruption of growth factor dependent regulation of satellite cell proliferation contributes to impaired muscle regeneration in these diseases. Understanding GO:0014843 provides a framework for linking growth factor signaling defects to clinical phenotypes.
Muscle wasting and impaired regeneration
Growth factor dependent satellite cell proliferation is required for efficient muscle repair, and its failure leads to muscle wasting. Meteorin-like facilitates skeletal muscle repair through a Stat3/IGF-1 mechanism, highlighting a therapeutic axis. TGF-beta inhibition of satellite cell differentiation can also impair regenerative capacity.
Fibrotic and metabolic muscle disorders
The fibrinolytic system is required for growth factor dependent satellite cell proliferation and invasion, and its dysregulation may contribute to fibrotic remodeling. BMP signaling regulates satellite cell dependent postnatal muscle growth, and its perturbation can affect muscle mass. Androgen regulation of satellite cell function links this process to metabolic and endocrine muscle disorders.
From growth factor dependent regulation of skeletal muscle satellite cell proliferation-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of p27Kip1 increase satellite cell proliferation? | CDKN1B knockout in satellite cells |
| Does TGF-beta signaling inhibition promote differentiation? | TGFB1 knockout or receptor point mutation |
| Can IGF-1 enhance muscle repair? | IGF1 overexpression or knock-in |
| Is BMP signaling required for postnatal muscle growth? | BMP4 conditional knockout |
| Does TRPV2 mediate satellite cell remodelling? | TRPV2 knockout and tagged knock-in |
| Is the fibrinolytic system required for proliferation? | PLAU/PLAT knockout models |
How to Study the growth factor dependent regulation of skeletal muscle satellite cell proliferation Process
| Method | What It Measures | Typical Application |
|---|---|---|
| EdU/BrdU incorporation | DNA synthesis and proliferation | Satellite cell proliferation assays |
| RNA-seq | Transcriptional changes | Growth factor response profiling |
| Phospho-Western blot | Signaling pathway activation | Stat3/IGF-1 pathway analysis |
| Conditional knockout | Gene function in vivo | Satellite cell dependent muscle growth |
| Lineage tracing | Cell fate and contribution | Regeneration studies |
| Live-cell imaging | Cell division and migration | Satellite cell dynamics |
| Fibrinolytic activity assay | Plasminogen activation | Proteolysis in satellite cells |
| Androgen treatment assay | Hormone effects on proliferation | Endocrine regulation studies |
Satellite cell isolation and proliferation assays
Satellite cells can be isolated from skeletal muscle and cultured to measure proliferation in response to growth factors such as FGFs and TGF-beta. EdU or BrdU incorporation assays quantify DNA synthesis and cell cycle entry. These assays are foundational for studying GO:0014843.
Gene expression and signaling analysis
RNA-seq and qPCR can measure expression of growth factors, receptors, and cell cycle regulators during satellite cell activation. Phospho-specific antibodies against signaling intermediates such as Stat3 can reveal pathway activation. These methods link growth factor signals to transcriptional programs.
Genetic perturbation in animal models
Conditional knockout and knock-in mouse models allow testing of gene function in satellite cell proliferation in vivo. Lineage tracing can determine whether satellite cells contribute to regenerated fibers. These models are essential for validating findings from cell culture.
Imaging and proteolysis assays
Live-cell imaging can track satellite cell division and migration. Fibrinolytic activity assays measure plasminogen activation, which is required for growth factor dependent proliferation and invasion. These methods capture dynamic aspects of GO:0014843.
How CRISPR Can Be Used to Study GO:0014843 growth factor dependent regulation of skeletal muscle satellite cell proliferation
Knockout
CRISPR knockout of genes such as CDKN1B or TGFB1 in satellite cells can test their requirement for growth factor dependent proliferation. Knockout models help determine whether a gene is necessary for satellite cell expansion.
Point Mutation
Point mutations can be introduced into signaling domains of receptors such as FGFR1 or TGFBR1 to dissect specific phosphorylation events. These models are useful for separating proliferation from differentiation outputs.
Knock-in
Knock-in of reporters or tags into genes like TRPV2 allows visualization of satellite cell dynamics. Tagged knock-in of cell cycle regulators can reveal their localization during proliferation.
Overexpression
Overexpression of growth factors such as IGF1 or METRNL can enhance satellite cell proliferation and muscle repair. Overexpression models are valuable for testing therapeutic potential.
How EDITGENE Supports growth factor dependent regulation of skeletal muscle satellite cell proliferation Research
Researchers studying growth factor dependent regulation of skeletal muscle satellite cell proliferation-related genes often need to determine whether a candidate gene is causally involved in satellite cell expansion, differentiation, or regeneration. EDITGENE provides CRISPR-based cell models and screening services to interrogate these mechanisms with precision.
Contact EDITGENE today to design your custom CRISPR model for growth factor dependent regulation of skeletal muscle satellite cell proliferation research.
Frequently Asked Questions About growth factor dependent regulation of skeletal muscle satellite cell proliferation
What is GO:0014843?
GO:0014843 is the Gene Ontology term for growth factor dependent regulation of skeletal muscle satellite cell proliferation, describing how growth factors such as FGFs and TGF-beta modulate satellite cell division.
What genes are involved in growth factor dependent regulation of skeletal muscle satellite cell proliferation?
Key genes include FGF2, TGFB1, CDKN1B (p27Kip1), IGF1, BMP4, and TRPV2, among others.
How do growth factors regulate satellite cell proliferation?
Growth factors bind to receptors on satellite cells and activate intracellular signaling that controls cell cycle entry, with TGF-beta inhibiting differentiation and FGFs promoting proliferation.
Why is satellite cell proliferation important for muscle regeneration?
Satellite cell proliferation provides the pool of cells needed for postnatal muscle growth and repair after injury.
What diseases are linked to defective satellite cell proliferation?
Neuromuscular disorders and satellite cell-opathies are linked to satellite cell dysfunction, and impaired proliferation contributes to muscle wasting.
What is the role of p27Kip1 in satellite cell proliferation?
p27Kip1 is a key cell cycle inhibitor that restrains satellite cell proliferation and is regulated by growth factor signals.
Does TGF-beta inhibit satellite cell differentiation?
Yes, TGF-beta inhibits skeletal muscle satellite cell differentiation while also modulating proliferation.
What methods are used to study GO:0014843?
Common methods include EdU/BrdU proliferation assays, RNA-seq, phospho-Western blot, conditional knockout mice, and fibrinolytic activity assays.
Can CRISPR be used to study satellite cell proliferation?
Yes, CRISPR knockout, point mutation, knock-in, and overexpression models can test gene function in satellite cell proliferation.
What is the fibrinolytic system's role in satellite cell proliferation?
The cell-associated fibrinolytic system is required for growth factor dependent proliferation and invasion of muscle satellite cells.
Conclusion
GO:0014843 captures the essential growth factor dependent control of skeletal muscle satellite cell proliferation, a process that underpins muscle growth and regeneration. Key growth factors such as FGFs and TGF-beta, along with cell cycle regulators like p27Kip1, form a regulatory network that determines satellite cell fate. Dysregulation of this process is implicated in neuromuscular disorders and muscle wasting, making it a compelling area for therapeutic research. CRISPR-based models and screening approaches offer powerful tools to dissect these mechanisms and identify new targets.
References
- 1. Ganassi M et al.. 2022. Involvement of muscle satellite cell dysfunction in neuromuscular disorders: Expanding the portfolio of satellite cell-opathies.. Eur J Transl Myol 32(1) PMID: 35302338
- 2. Baht GS et al.. 2020. Meteorin-like facilitates skeletal muscle repair through a Stat3/IGF-1 mechanism.. Nat Metab 2(3):278-289 PMID: 32694780
- 3. Chen Y et al.. 2025. TRPV2 in muscle satellite cells is crucial for skeletal muscle remodelling.. Cell Death Dis 16(1):888 PMID: 41397955
- 4. Spangenburg EE et al.. 2002. p27Kip1: a key regulator of skeletal muscle satellite cell proliferation.. Clin Orthop Relat Res PMID: 12394472
- 5. Stantzou A et al.. 2017. BMP signaling regulates satellite cell-dependent postnatal muscle growth.. Development 144(15):2737-2747 PMID: 28694257
- 6. Fibbi G et al.. 2002. Growth factor-dependent proliferation and invasion of muscle satellite cells require the cell-associated fibrinolytic system.. Biol Chem 383(1):127-36 PMID: 11928807
- 7. Chen Y et al.. 2005. Androgen regulation of satellite cell function.. J Endocrinol 186(1):21-31 PMID: 16002532
- 8. Allen RE et al.. 1987. Inhibition of skeletal muscle satellite cell differentiation by transforming growth factor-beta.. J Cell Physiol 133(3):567-72 PMID: 3480289
