GO:0055002 striated muscle cell development: Myogenic Regulatory Network, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0055002 striated muscle cell development describes the progression of a striated muscle cell from its formation to its mature structure, covering both skeletal and cardiac muscle lineages.
• The process is orchestrated by the myogenic regulatory factors (MRFs) Myf5, MyoD, Myogenin and MRF4, which control specification, differentiation and fusion of muscle cells.
• Striated muscle cells are characterized by sarcomeric striations and can be generated in vitro from human pluripotent stem cells, providing tractable models for development and disease.
• Calcineurin and YAP signaling are key regulators of striated muscle development, influencing fiber type, size and adaptation.
• Disruption of striated muscle cell development underlies congenital myopathies, muscular dystrophies and age-related sarcopenia, making it a major therapeutic target.
• CRISPR-based knockout, point mutation, knock-in and overexpression models enable causal dissection of genes controlling striated muscle cell development.
Description
Striated muscle cell development (GO:0055002) is the biological process by which a striated muscle cell progresses from its formation to its mature structure. Striated muscle cells contain fibers divided by transverse bands into striations, and both cardiac and skeletal muscle are types of striated muscle. This ontology term therefore encompasses the specification, differentiation, fusion and maturation of skeletal myoblasts and cardiomyocytes, as well as the establishment of the sarcomeric architecture that defines their contractile function. Understanding this process is fundamental to developmental biology, regenerative medicine and the study of muscle disease. The myogenic regulatory factors Myf5, MyoD, Myogenin and MRF4 are central transcriptional regulators of skeletal muscle development, controlling satellite cell activation and regenerative myogenesis. In addition, chromatin organization within muscle stem cells influences their developmental potential and regenerative capacity. In vitro protocols now allow the generation of human muscle fibers and satellite-like cells from pluripotent stem cells, enabling direct study of human striated muscle cell development. This article synthesizes the authoritative GO definition with real PubMed literature to provide a research-grade overview of the genes, mechanisms, disease links and experimental methods associated with GO:0055002.
striated muscle cell development At A Glance
| GO ID | GO:0055002 |
|---|---|
| GO term | striated muscle cell development |
| Ontology | biological_process |
| Synonym | none |
| Definition | The process whose specific outcome is the progression of a striated muscle cell over time, from its formation to the mature structure; striated muscle cells contain fibers divided by transverse bands into striations, and cardiac and skeletal muscle are types of striated muscle. |
| Major function | Specification, differentiation, fusion and maturation of skeletal and cardiac muscle cells, including sarcomere assembly and contractile specialization. |
| Key regulators | Myf5, MyoD, Myogenin, MRF4, calcineurin, YAP. |
| Relevance | Congenital myopathies, muscular dystrophies, sarcopenia, regenerative medicine and stem-cell-derived muscle models. |
What Is GO:0055002?
GO:0055002 (striated muscle cell development) is defined as the process whose specific outcome is the progression of a striated muscle cell over time, from its formation to the mature structure. Striated muscle cells contain fibers that are divided by transverse bands into striations, and cardiac and skeletal muscle are types of striated muscle. In practice, this term covers the developmental trajectory of skeletal myoblasts and cardiomyocytes, including lineage specification, differentiation, myoblast fusion, sarcomere assembly and functional maturation.
Why Is striated muscle cell development Important in Cell Biology?
Striated muscle cell development is essential for understanding how skeletal and cardiac muscle are built and maintained, and its disruption is directly linked to congenital myopathies, muscular dystrophies and age-related muscle loss. Because the myogenic regulatory factors Myf5, MyoD, Myogenin and MRF4 control satellite cell activation and regenerative myogenesis, they are prime targets for therapeutic strategies aimed at muscle repair. Chromatin organization in muscle stem cells further determines their developmental and regenerative potential, linking epigenetic regulation to striated muscle cell development. In vitro generation of human muscle fibers and satellite-like cells from pluripotent stem cells provides a human-relevant platform for disease modeling and drug discovery. Signaling pathways such as calcineurin and YAP regulate fiber type, size and adaptation, offering additional entry points for intervention. Thus, GO:0055002 is a central node connecting developmental biology, regenerative medicine and muscle disease research.
• Defines the developmental program that builds skeletal and cardiac muscle cells.
• Provides a framework for understanding congenital myopathies and muscular dystrophies.
• Underpins regenerative medicine strategies using pluripotent stem cell-derived muscle.
• Links myogenic regulatory factors to satellite cell activation and muscle repair.
• Connects chromatin organization in muscle stem cells to developmental potential.
• Highlights calcineurin and YAP signaling as regulators of fiber type and size.
• Supports disease modeling and drug screening with human muscle fibers in vitro.
• Enables CRISPR-based causal dissection of muscle developmental genes.
• Relevant to age-related sarcopenia and muscle wasting.
• Guides tissue engineering and cell therapy for muscle regeneration.
What Happens During striated muscle cell development?
Specification of myogenic progenitors
In simple terms: Early cells decide to become muscle.
The first step in striated muscle cell development is the specification of myogenic progenitors, which in skeletal muscle depends on the myogenic regulatory factor Myf5. These progenitors are derived from somites and subsequently activate MyoD to commit to the myogenic lineage. Chromatin organization within muscle stem cells influences this specification step by controlling access to myogenic gene loci. In vitro, human pluripotent stem cells can be directed to form muscle progenitors, providing a model to study this early decision.
Differentiation and myoblast fusion
In simple terms: Muscle precursor cells mature and fuse into fibers.
After specification, myoblasts exit the cell cycle and differentiate under the control of MyoD and Myogenin, then fuse to form multinucleated myotubes. This fusion step is a hallmark of skeletal muscle development and requires coordinated membrane remodeling and cytoskeletal reorganization. The myogenic regulatory factor MRF4 also contributes to later stages of differentiation and maturation. In vitro generation of human muscle fibers from pluripotent stem cells recapitulates this differentiation and fusion process.
Sarcomere assembly and striation
In simple terms: The cell builds the repeating contractile units that give it stripes.
During maturation, striated muscle cells assemble sarcomeres, the repeating contractile units that produce the characteristic transverse striations. Slow myosin isoforms are expressed in a developmentally regulated manner and contribute to fiber type specification. The assembly of sarcomeres requires coordinated expression of structural proteins and is a defining feature of striated muscle cell development. Disruption of sarcomere assembly leads to congenital myopathies.
Signaling control by calcineurin and YAP
In simple terms: Chemical signals tell the muscle cell how big and what type to become.
Calcineurin signaling plays a key role in striated muscle development, adaptation and disease, influencing fiber type and hypertrophic responses. YAP activation regulates muscle fiber size through a PKC-dependent mechanism during in vitro myogenesis. These pathways integrate developmental cues with mechanical and metabolic signals to shape the mature muscle cell. Their dysregulation contributes to pathological muscle remodeling.
Maturation and regenerative potential
In simple terms: The muscle cell becomes fully functional and ready to repair damage.
Mature striated muscle cells acquire contractile function and, in skeletal muscle, are accompanied by satellite cells that support regeneration. Satellite cell activation and regenerative myogenesis are controlled by the same myogenic regulatory factors that drive development. Chromatin organization in muscle stem cells is critical for maintaining regenerative potential. Human pluripotent stem cell-derived satellite-like cells provide a model to study this maturation and regenerative capacity.
Key Genes Involved in GO:0055002 striated muscle cell development
The following genes and proteins are central to striated muscle cell development, based on published literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| MYF5 | Specification of myogenic progenitors | Marker of muscle lineage commitment; knockout models impair muscle formation |
| MYOD1 | Commitment and differentiation of myoblasts | Key regulator of myogenic differentiation; target for CRISPR knockout |
| MYOG | Terminal differentiation and myoblast fusion | Essential for myotube formation; point mutations affect fusion |
| MRF4 | Late differentiation and maturation | Contributes to maintenance of mature muscle |
| MYH7 | Slow myosin heavy chain | Fiber type specification; mutations cause cardiomyopathy |
| MYH2 | Fast myosin heavy chain | Fiber type diversity; relevant to muscle performance |
| PPP3CA | Calcineurin catalytic subunit | Regulates fiber type and hypertrophy |
| PPP3CB | Calcineurin catalytic subunit | Modulates muscle adaptation |
| YAP1 | Hippo pathway effector | Regulates muscle fiber size via PKC |
| PRKCA | PKC alpha | Mediates YAP-dependent fiber size control |
| PAX7 | Satellite cell marker | Maintains muscle stem cell pool |
| PAX3 | Early myogenic specification | Required for progenitor migration |
| MYF6 | MRF4 encoding gene | Late muscle differentiation |
| DES | Desmin intermediate filament | Sarcomere and cytoskeletal integrity |
| TTN | Titin sarcomeric protein | Sarcomere assembly and elasticity |
| ACTN2 | Alpha-actinin-2 | Z-disc structure and function |
| TNNT2 | Cardiac troponin T | Cardiac sarcomere function |
| CKM | Creatine kinase M | Energy metabolism in mature muscle |
How Is striated muscle cell development Regulated?
Striated muscle cell development is regulated by a hierarchy of transcription factors and signaling pathways. The myogenic regulatory factors Myf5, MyoD, Myogenin and MRF4 form a regulatory network that controls satellite cell activation and regenerative myogenesis. Chromatin organization in muscle stem cells modulates the accessibility of these factors to target genes, thereby influencing developmental progression. Calcineurin signaling regulates fiber type and adaptive responses in striated muscle. YAP, a Hippo pathway effector, controls muscle fiber size through a PKC-dependent mechanism during in vitro myogenesis. These regulatory layers ensure that muscle cells acquire the appropriate size, type and function during development.
striated muscle cell development and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| MYOD1 | Impaired myogenesis and muscle regeneration | Knockout and point mutation in myoblast cell lines |
| MYOG | Defective myoblast fusion and myotube formation | Knockout in C2C12 cells |
| MYH7 | Hypertrophic cardiomyopathy | Knock-in of patient mutations in iPSC-derived cardiomyocytes |
| PPP3CA | Cardiac hypertrophy and muscle remodeling | Overexpression and knockout in striated muscle cells |
| YAP1 | Altered muscle fiber size | Knockdown and overexpression in chick myogenesis model |
Congenital myopathies and muscular dystrophies
Disruption of striated muscle cell development leads to congenital myopathies and muscular dystrophies, which are characterized by muscle weakness and structural abnormalities. Mutations in sarcomeric proteins such as titin and alpha-actinin-2 impair sarcomere assembly, a key step in striated muscle cell development. Defects in myogenic regulatory factors can impair satellite cell function and muscle regeneration.
Cardiomyopathy and cardiac development
Cardiac muscle is a type of striated muscle, and developmental defects in cardiomyocytes contribute to congenital heart disease and cardiomyopathy. Slow myosin isoforms, including MYH7, are expressed during cardiac and skeletal muscle development, and mutations in MYH7 cause hypertrophic cardiomyopathy. Calcineurin signaling is implicated in cardiac hypertrophy and heart failure.
Age-related sarcopenia and muscle wasting
Decline in muscle stem cell function and regenerative capacity contributes to sarcopenia and muscle wasting. Chromatin changes in aged muscle stem cells impair their ability to activate myogenic programs. Targeting the myogenic regulatory network may help restore muscle regeneration in aging.
From striated muscle cell development-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does a gene drive myogenic specification? | Knockout of MYF5 or MYOD1 in myoblast lines |
| Does a mutation impair myoblast fusion? | Point mutation in MYOG followed by fusion assay |
| Does a variant affect sarcomere assembly? | Knock-in of sarcomeric mutations in iPSC-derived muscle |
| Where is a protein localized during development? | Tagged knock-in of DES or TTN |
| Does overexpression alter fiber size? | Overexpression of YAP1 in myotubes |
| Does calcineurin modulate fiber type? | Overexpression or knockout of PPP3CA in striated muscle cells |
How to Study the striated muscle cell development Process
| Method | What It Measures | Typical Application |
|---|---|---|
| In vitro myogenesis | Myotube formation and fusion | Studying differentiation of myoblasts |
| RNA-seq | Transcriptional changes | Profiling myogenic regulatory networks |
| ATAC-seq | Chromatin accessibility | Muscle stem cell chromatin organization |
| Immunofluorescence | Sarcomere and striation structure | Assessing sarcomere assembly |
| Western blot | Protein expression and signaling | Calcineurin and YAP pathway activity |
| Reporter assays | Transcriptional activity | Myogenic factor target validation |
| CRISPR screening | Gene function at scale | Identifying regulators of myogenesis |
| Live imaging | Dynamic fusion and contraction | Real-time muscle development |
In vitro myogenesis assays
In vitro differentiation of myoblasts and pluripotent stem cells into muscle fibers is a primary method to study striated muscle cell development. These assays allow monitoring of myotube formation, sarcomere assembly and contractile function. Human pluripotent stem cell-derived muscle fibers and satellite-like cells provide a human-relevant platform.
Transcriptional and chromatin profiling
RNA sequencing and chromatin accessibility assays reveal the transcriptional programs and chromatin organization underlying muscle stem cell development. These methods identify regulatory regions bound by Myf5, MyoD, Myogenin and MRF4. They are essential for dissecting the myogenic regulatory network.
Imaging of sarcomere assembly
Immunofluorescence and live imaging of sarcomeric proteins such as titin and alpha-actinin-2 visualize striation formation and sarcomere organization. These methods quantify fiber size and structural integrity. They are used to assess developmental defects in disease models.
Signaling pathway analysis
Western blotting and reporter assays measure calcineurin and YAP activity during myogenesis. Pharmacological inhibition or genetic manipulation of these pathways reveals their roles in fiber type and size. Such analyses link signaling to developmental outcomes.
How CRISPR Can Be Used to Study GO:0055002 striated muscle cell development
Knockout
CRISPR knockout of myogenic regulatory factors such as MYF5, MYOD1, MYOG and MRF4 in myoblast lines or pluripotent stem cells can reveal their requirement for striated muscle cell development. Knockout models show defects in specification, differentiation or fusion depending on the gene targeted. These models are foundational for causal gene function studies.
Point Mutation
CRISPR point mutation can introduce disease-associated variants into sarcomeric genes such as MYH7 or MYOG to model congenital myopathies and fusion defects. These models allow precise assessment of how single amino acid changes affect sarcomere assembly and muscle function. They are valuable for genotype-phenotype correlation.
Knock-in
Knock-in of fluorescent or epitope tags into genes like DES or TTN enables visualization of sarcomere proteins in live muscle cells. Knock-in of patient mutations into iPSC-derived muscle provides human disease models. These approaches support detailed structural and functional studies.
Overexpression
CRISPR-mediated overexpression of YAP1 or PPP3CA can test sufficiency for fiber size and type changes during myogenesis. Overexpression models complement knockout studies by revealing gain-of-function effects. They are useful for dissecting signaling pathways in striated muscle cell development.
How EDITGENE Supports striated muscle cell development Research
Researchers studying striated muscle cell development-related genes often need to determine whether a candidate gene is causally involved in myogenic specification, differentiation, fusion or maturation. EDITGENE provides CRISPR-based cell model services that enable precise genetic manipulation in skeletal and cardiac muscle cell backgrounds, supporting mechanistic studies and disease modeling.
Contact EDITGENE today to design your custom CRISPR model for striated muscle cell development research.
Frequently Asked Questions About striated muscle cell development
What is GO:0055002 striated muscle cell development?
GO:0055002 is the biological process describing the progression of a striated muscle cell from its formation to its mature structure, covering skeletal and cardiac muscle cells.
What genes are involved in striated muscle cell development?
Key genes include MYF5, MYOD1, MYOG, MRF4, MYH7, PPP3CA, YAP1 and sarcomeric genes such as TTN and DES.
What are the stages of striated muscle cell development?
The main stages are specification of myogenic progenitors, differentiation and myoblast fusion, sarcomere assembly, signaling-controlled maturation and acquisition of regenerative potential.
How is striated muscle cell development regulated?
It is regulated by the myogenic regulatory factors Myf5, MyoD, Myogenin and MRF4, chromatin organization in muscle stem cells, and signaling pathways such as calcineurin and YAP.
What diseases are linked to striated muscle cell development?
Congenital myopathies, muscular dystrophies, cardiomyopathy and age-related sarcopenia are linked to defects in this process.
How can I study striated muscle cell development in the lab?
In vitro myogenesis assays, RNA-seq, ATAC-seq, immunofluorescence of sarcomeres and signaling assays are commonly used.
Can human pluripotent stem cells be used to model striated muscle cell development?
Yes, protocols exist to generate human muscle fibers and satellite-like cells from pluripotent stem cells for developmental and disease studies.
What is the role of calcineurin in striated muscle development?
Calcineurin regulates fiber type, adaptation and disease responses in striated muscle.
How does YAP affect muscle fiber size?
YAP activation regulates muscle fiber size through a PKC-dependent mechanism during in vitro myogenesis.
What CRISPR models are available for striated muscle cell development research?
Knockout, point mutation, knock-in and overexpression models can be generated in muscle cell backgrounds to dissect gene function.
Conclusion
GO:0055002 striated muscle cell development is a central biological process that governs the formation and maturation of skeletal and cardiac muscle cells. Its regulation by myogenic regulatory factors, chromatin organization and signaling pathways such as calcineurin and YAP is critical for normal muscle function, and its disruption underlies a range of muscle diseases. Advances in human pluripotent stem cell-derived muscle models and CRISPR-based genetic manipulation provide powerful tools to dissect this process and develop therapeutic strategies. Continued research into striated muscle cell development will inform regenerative medicine and the treatment of congenital and acquired muscle disorders.
References
- 1. Zammit PS. 2017. Function of the myogenic regulatory factors Myf5, MyoD, Myogenin and MRF4 in skeletal muscle, satellite cells and regenerative myogenesis.. Semin Cell Dev Biol 72:19-32 PMID: 29127046
- 2. Santarelli P et al.. 2024. Chromatin organization of muscle stem cell.. Curr Top Dev Biol 158:375-406 PMID: 38670713
- 4. Chal J et al.. 2016. Generation of human muscle fibers and satellite-like cells from human pluripotent stem cells in vitro.. Nat Protoc 11(10):1833-50 PMID: 27583644
- 5. Yamamoto M et al.. 2022. Development and Regeneration of Muscle, Tendon, and Myotendinous Junctions in Striated Skeletal Muscle.. Int J Mol Sci 23(6) PMID: 35328426
- 6. Stockdale FE et al.. 2002. Slow myosins in muscle development.. Results Probl Cell Differ 38:199-214 PMID: 12132396
- 7. Gomes G et al.. 2022. Activation of YAP regulates muscle fiber size in a PKC-dependent mechanism during chick in vitro myogenesis.. J Muscle Res Cell Motil 43(2):73-86 PMID: 34410584
- 8. Bassel-Duby R et al.. 2003. Role of calcineurin in striated muscle: development, adaptation, and disease.. Biochem Biophys Res Commun 311(4):1133-41 PMID: 14623299
