GO:0045844 positive regulation of striated muscle tissue development: Signaling Pathways, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0045844 describes any biological process that activates or increases the frequency, rate, or extent of striated muscle tissue development, encompassing both cardiac and skeletal muscle lineages.
• Positive regulation is achieved through secreted growth factors, intracellular signaling cascades (IGF-1/Akt/mTOR, Wnt/beta-catenin), and transcription factor networks that drive myogenic differentiation.
• Key positive regulators include IGF-1, mTOR, beta-catenin, MyoD, myogenin, and RNF138, which promote myoblast fusion and sarcomere assembly.
• Dysregulation of this process underlies cardiac hypertrophy, skeletal muscle atrophy, and impaired muscle regeneration after injury.
• Nutritional and exercise stimuli, such as dietary protein and resistance exercise, positively regulate skeletal muscle development via mTORC1 signaling.
• CRISPR knockout, knock-in, and overexpression models are essential to causally test candidate positive regulators in striated muscle biology.
Description
Striated muscle tissue, comprising cardiac and skeletal muscle, is characterized by sarcomeres and is essential for voluntary movement and cardiac contraction. The Gene Ontology term GO:0045844, positive regulation of striated muscle tissue development, captures any process that activates or increases the frequency, rate, or extent of striated muscle development. This term is critical for researchers because it groups upstream signals and intracellular effectors that drive myogenesis, myofiber growth, and cardiac hypertrophy. Understanding these positive regulators provides mechanistic insight into muscle regeneration, atrophy, and cardiomyopathy. The process is orchestrated by growth factors such as IGF-1, signaling kinases including mTOR and Akt, and transcription factors of the MyoD family. Recent studies have identified novel regulators such as RNF138 and CDC23 that modulate skeletal muscle differentiation through Wnt/beta-catenin and cell cycle pathways. This article synthesizes authoritative QuickGO annotation and verified PubMed literature to provide a research-grade overview of GO:0045844, its molecular players, disease relevance, and experimental strategies for investigation.
positive regulation of striated muscle tissue development At A Glance
| GO ID | GO:0045844 |
|---|---|
| GO term | positive regulation of striated muscle tissue development |
| Ontology | biological_process |
| Definition | Any process that activates or increases the frequency, rate or extent of striated muscle development. |
| Synonyms | activation of striated muscle development; stimulation of striated muscle development; up regulation of striated muscle development; up-regulation of striated muscle development; upregulation of striated muscle development |
| Major function | Enhances the formation, growth, and maturation of cardiac and skeletal muscle tissue. |
| Related processes | Myogenesis, myoblast fusion, sarcomere assembly, cardiac hypertrophy, muscle regeneration. |
| Key positive regulators | IGF-1, mTOR, Akt, beta-catenin, MyoD, myogenin, RNF138, CDC23. |
| Disease relevance | Cardiac hypertrophy, skeletal muscle atrophy, ischemia-reperfusion injury, muscular dystrophies. |
What Is GO:0045844?
GO:0045844 is a biological process term defined as any process that activates or increases the frequency, rate, or extent of striated muscle development. It is a positive regulatory term that sits upstream of the developmental process itself, encompassing molecular signals, signaling cascades, and transcriptional programs that enhance the formation and maturation of striated muscle tissue, including both skeletal and cardiac muscle.
Why Is positive regulation of striated muscle tissue development Important in Cell Biology?
Positive regulation of striated muscle tissue development is fundamental to maintaining muscle mass, enabling cardiac adaptation, and supporting regeneration after injury. Its dysregulation contributes to pathological cardiac hypertrophy, muscle wasting, and impaired recovery from ischemia-reperfusion injury. Understanding the positive regulators of this process is therefore essential for developing therapeutic strategies against heart failure, sarcopenia, and muscle degenerative conditions.
• Controls skeletal muscle growth and hypertrophy in response to exercise and nutrition.
• Drives pathological cardiac hypertrophy, a major risk factor for heart failure.
• Regulates muscle regeneration and repair after injury or ischemia-reperfusion.
• Integrates anabolic signals such as IGF-1 and mTORC1 to promote protein synthesis.
• Involves Wnt/beta-catenin signaling, a key pathway in myogenic differentiation.
• Modulates cell cycle regulators such as CDC23 in porcine skeletal muscle development.
• Provides targets for treating muscle atrophy and sarcopenia.
• Influences dietary protein utilization for muscle mass maintenance.
• Is a focus for CRISPR-based functional genomics in muscle biology.
• Links to metabolic and mitochondrial adaptations in striated muscle.
What Happens During positive regulation of striated muscle tissue development?
Initiation by Growth Factor Signaling
In simple terms: Growth factors tell muscle precursor cells to start building muscle.
Positive regulation begins when secreted factors such as IGF-1 bind to receptors on myoblasts or cardiomyocytes, activating intracellular cascades. IGF-1 signaling through PI3K/Akt promotes protein synthesis and inhibits atrophy pathways, thereby enhancing muscle development. In cardiac muscle, neurohumoral factors and mechanical stretch can initiate hypertrophic signaling that increases muscle mass.
Activation of mTOR and Anabolic Pathways
In simple terms: mTOR acts as a master switch that turns on protein production for muscle growth.
The mTORC1 kinase integrates signals from growth factors, amino acids, and exercise to stimulate translation and ribosome biogenesis, driving myofiber hypertrophy. Dietary protein and resistance exercise positively regulate skeletal muscle development through mTORC1 activation. Inhibition of mTOR blocks the positive regulation of muscle growth, demonstrating its central role.
Transcriptional Control by Myogenic Factors
In simple terms: Specific transcription factors switch on muscle-specific genes.
MyoD and myogenin are basic helix-loop-helix transcription factors that activate muscle-specific genes, promoting myoblast differentiation and fusion. Beta-catenin, a key mediator of Wnt signaling, cooperates with these factors to enhance myogenesis. RNF138 has been shown to regulate skeletal muscle differentiation via the Wnt/beta-catenin pathway, acting as a positive regulator.
Myoblast Fusion and Sarcomere Assembly
In simple terms: Muscle precursor cells merge and build the contractile machinery.
Positive regulation culminates in myoblast fusion into multinucleated myotubes and assembly of sarcomeres. This step requires coordinated expression of structural proteins and membrane fusion machinery. CDC23, a component of the anaphase-promoting complex, influences porcine skeletal muscle development, likely by regulating cell cycle exit and differentiation. In cardiac muscle, sarcomere assembly is a hallmark of hypertrophic growth.
Metabolic and Mitochondrial Adaptations
In simple terms: Muscle cells adjust their energy production to support growth.
Positive regulation of striated muscle development includes metabolic remodeling, such as increased mitochondrial biogenesis and fatty acid oxidation. L-carnitine supplementation has been studied for its role in recovery after exercise, reflecting the metabolic demands of muscle growth. These adaptations support the energy needs of developing and hypertrophying muscle.
Key Genes Involved in GO:0045844 positive regulation of striated muscle tissue development
The following genes and proteins are established positive regulators or effectors of striated muscle tissue development, based on verified literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| IGF1 | Growth factor activating PI3K/Akt/mTOR | Promotes skeletal muscle hypertrophy and regeneration |
| MTOR | Kinase integrating anabolic signals | Central regulator of muscle protein synthesis |
| AKT1 | Serine/threonine kinase downstream of IGF-1 | Inhibits atrophy and promotes hypertrophy |
| CTNNB1 | Beta-catenin, mediator of Wnt signaling | Enhances myogenic differentiation |
| MYOD1 | Myogenic transcription factor | Drives myoblast differentiation |
| MYOG | Myogenin, transcription factor | Promotes myotube formation |
| RNF138 | E3 ubiquitin ligase | Regulates skeletal muscle differentiation via Wnt/beta-catenin |
| CDC23 | APC/C subunit | Modulates porcine skeletal muscle development |
| WDR12 | WD repeat protein | Involved in myocardial ischemia-reperfusion injury |
| MIR544 | MicroRNA | Targets WDR12 in cardiac injury |
| CIRCMIRIAF | Circular RNA | Aggravates myocardial ischemia-reperfusion injury |
| MYH7 | Myosin heavy chain beta | Sarcomeric protein in cardiac muscle |
| ACTA1 | Alpha skeletal muscle actin | Structural component of sarcomere |
| TNNT2 | Cardiac troponin T | Regulates cardiac muscle contraction |
| FOXO1 | Forkhead transcription factor | Inhibited by Akt to prevent atrophy |
| MEF2C | Transcription factor | Cooperates with MyoD in myogenesis |
| SMAD2/3 | TGF-beta signaling effectors | Modulate muscle growth and fibrosis |
How Is positive regulation of striated muscle tissue development Regulated?
Positive regulation of striated muscle tissue development is controlled by a balance between anabolic and catabolic signals. The IGF-1/PI3K/Akt/mTORC1 axis is the primary anabolic pathway, promoting protein synthesis and inhibiting FOXO-mediated atrophy. Wnt/beta-catenin signaling enhances myogenic differentiation, with RNF138 acting as a positive modulator. Cell cycle regulators such as CDC23 influence the timing of differentiation. In cardiac muscle, neurohumoral and mechanical stimuli activate hypertrophic signaling, while ischemia-reperfusion injury can disrupt this regulation through circMIRIAF/miR-544/WDR12 interactions. Nutritional inputs, including dietary protein and L-carnitine, also modulate this process.
positive regulation of striated muscle tissue development and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| MTOR | Cardiac hypertrophy, muscle atrophy | Cardiomyocyte-specific KO or overexpression |
| RNF138 | Skeletal muscle differentiation defects | Myoblast KO and knock-in |
| CDC23 | Porcine skeletal muscle development | Overexpression in myoblasts |
| WDR12 | Myocardial ischemia-reperfusion injury | Cardiac-specific KO |
| IGF1 | Sarcopenia, muscle wasting | Muscle-specific overexpression |
Cardiac Hypertrophy and Heart Failure
Pathological cardiac hypertrophy is a maladaptive form of positive regulation of striated muscle tissue development. Sustained activation of hypertrophic signaling leads to increased cardiomyocyte size, fibrosis, and eventually heart failure. Understanding the molecular switches that distinguish physiological from pathological hypertrophy is a major research goal.
Myocardial Ischemia-Reperfusion Injury
Ischemia-reperfusion injury disrupts normal muscle development and repair. circMIRIAF aggravates myocardial ischemia-reperfusion injury by targeting the miR-544/WDR12 axis, linking dysregulated positive regulation to cardiac damage. This highlights the importance of precise control over muscle tissue development pathways.
Skeletal Muscle Atrophy and Sarcopenia
Loss of positive regulation contributes to muscle atrophy and age-related sarcopenia. Reduced IGF-1/Akt/mTOR signaling and increased FOXO activity drive protein degradation and muscle wasting. Nutritional interventions such as dietary protein and L-carnitine supplementation aim to restore anabolic signaling.
Muscle Regeneration and Dystrophies
Impaired positive regulation of muscle development underlies defective regeneration in muscular dystrophies. Wnt/beta-catenin signaling and RNF138 are potential targets to enhance myogenic differentiation and repair. CDC23 expression influences skeletal muscle development, suggesting cell cycle control as a therapeutic avenue.
From positive regulation of striated muscle tissue development-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Is RNF138 required for myogenic differentiation? | RNF138 knockout myoblast cell line |
| Does a point mutation in beta-catenin alter Wnt signaling? | CTNNB1 point-mutation knock-in |
| Can overexpression of IGF-1 drive hypertrophy? | IGF-1 overexpression in cardiomyocytes |
| What is the role of CDC23 in muscle development? | CDC23 overexpression in porcine myoblasts |
| Does WDR12 mediate ischemia-reperfusion injury? | WDR12 knockout in cardiac cells |
| How does mTORC1 respond to amino acids? | mTOR knockout with amino acid stimulation |
How to Study the positive regulation of striated muscle tissue development Process
| Method | What It Measures | Typical Application |
|---|---|---|
| RNA-seq | Global gene expression changes | Identify myogenic transcriptional programs |
| Proteomics | Protein abundance and modifications | Map anabolic signaling |
| Immunofluorescence | Myotube formation and sarcomere structure | Quantify differentiation |
| CRISPR knockout | Loss-of-function effects | Test gene requirement |
| CRISPR knock-in | Point mutation or tag effects | Study specific variants |
| Overexpression | Gain-of-function effects | Test sufficiency |
| Western blot | Protein expression and phosphorylation | Validate signaling changes |
| qPCR | mRNA levels of target genes | Confirm expression changes |
Transcriptomic Profiling
RNA-seq is used to identify genes differentially expressed during myogenesis and to map the transcriptional networks downstream of positive regulators such as MyoD and beta-catenin. It provides a global view of the genetic programs activated during striated muscle development.
Proteomic and Phosphoproteomic Analysis
Mass spectrometry-based proteomics measures changes in protein abundance and phosphorylation status, revealing activation of mTOR, Akt, and other kinases during muscle growth. This approach identifies post-translational modifications critical for positive regulation.
Imaging and Morphometry
Immunofluorescence and live-cell imaging visualize myoblast fusion, sarcomere assembly, and myotube formation. Morphometric analysis quantifies myotube diameter and fusion index, providing direct readouts of positive regulation.
Functional Genomics with CRISPR
CRISPR knockout, knock-in, and overexpression screens enable causal testing of candidate positive regulators. Pooled CRISPR libraries coupled with sequencing can identify genes that enhance or impair muscle differentiation.
How CRISPR Can Be Used to Study GO:0045844 positive regulation of striated muscle tissue development
Knockout
CRISPR knockout is used to delete positive regulator genes such as RNF138 or CDC23 to determine whether they are required for striated muscle development. Loss of function typically results in impaired myoblast differentiation or reduced myotube formation.
Point Mutation
Point mutations can be introduced into genes like CTNNB1 to mimic disease-associated variants or to disrupt specific phosphorylation sites. This allows precise testing of how individual residues contribute to positive regulation.
Knock-in
Knock-in of reporter tags or epitope tags into endogenous loci enables real-time tracking of protein expression and localization during muscle development. Tagged knock-in of MyoD or myogenin can reveal dynamic expression patterns.
Overexpression
CRISPR activation or cDNA overexpression is used to test sufficiency of candidate genes such as IGF-1 or RNF138 in driving muscle hypertrophy or differentiation. Overexpression models complement knockout studies to establish causality.
How EDITGENE Supports positive regulation of striated muscle tissue development Research
Researchers studying positive regulation of striated muscle tissue development-related genes often need to determine whether a candidate gene is causally involved in myogenesis, hypertrophy, or regeneration. EDITGENE provides comprehensive CRISPR-based cell model services to accelerate this discovery process.
Contact EDITGENE today to design your custom CRISPR model for positive regulation of striated muscle tissue development research.
Frequently Asked Questions About positive regulation of striated muscle tissue development
What is GO:0045844?
GO:0045844 is the Gene Ontology term for positive regulation of striated muscle tissue development, describing any process that activates or increases the frequency, rate, or extent of striated muscle development.
What genes are involved in positive regulation of striated muscle tissue development?
Key genes include IGF1, MTOR, AKT1, CTNNB1, MYOD1, MYOG, RNF138, and CDC23, which promote myogenesis and muscle growth.
How is striated muscle development positively regulated?
It is positively regulated by growth factor signaling (IGF-1), anabolic pathways (mTOR), Wnt/beta-catenin signaling, and myogenic transcription factors.
What diseases are associated with dysregulated striated muscle development?
Cardiac hypertrophy, heart failure, skeletal muscle atrophy, sarcopenia, and ischemia-reperfusion injury are linked to dysregulation of this process.
What is the role of mTOR in muscle development?
mTORC1 integrates growth factor and nutrient signals to promote protein synthesis and muscle hypertrophy.
How does RNF138 regulate skeletal muscle differentiation?
RNF138 regulates skeletal muscle differentiation via the Wnt/beta-catenin signaling pathway.
What is the role of CDC23 in muscle development?
CDC23 expression and function are implicated in porcine skeletal muscle development, likely through cell cycle regulation.
How can CRISPR be used to study positive regulation of striated muscle development?
CRISPR knockout, knock-in, and overexpression models allow causal testing of candidate genes in myoblasts and cardiomyocytes.
What experimental models are used to study this GO term?
Common models include myoblast cell lines, primary cardiomyocytes, and CRISPR-engineered cells with KO, point mutations, or overexpression.
Why is positive regulation of striated muscle development important for health?
It maintains muscle mass, supports cardiac function, and enables regeneration; its dysregulation leads to atrophy and heart disease.
Conclusion
GO:0045844, positive regulation of striated muscle tissue development, encompasses a complex network of growth factors, signaling kinases, and transcription factors that drive muscle formation and growth. Understanding these positive regulators is essential for deciphering the mechanisms of cardiac hypertrophy, muscle atrophy, and regeneration. CRISPR-based cell models provide powerful tools to causally test candidate genes and accelerate therapeutic discovery in muscle biology.
References
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- 2. Schiaffino S et al.. 2013. Mechanisms regulating skeletal muscle growth and atrophy.. FEBS J 280(17):4294-314 PMID: 23517348
- 3. Fielding R et al.. 2018. l-Carnitine Supplementation in Recovery after Exercise.. Nutrients 10(3) PMID: 29534031
- 4. Tipton KD et al.. 2001. Exercise, protein metabolism, and muscle growth.. Int J Sport Nutr Exerc Metab 11(1):109-32 PMID: 11255140
- 5. Carbone JW et al.. 2019. Dietary Protein and Muscle Mass: Translating Science to Application and Health Benefit.. Nutrients 11(5) PMID: 31121843
- 6. Yin L et al.. 2024. circMIRIAF aggravates myocardial ischemia-reperfusion injury via targeting miR-544/WDR12 axis.. Redox Biol 73:103175 PMID: 38795544
- 7. Wang W et al.. 2025. RNF138 regulates skeletal muscle differentiation via the Wnt/β-catenin signaling pathway.. Theranostics 15(10):4446-4464 PMID: 40225576
- 8. Xie S et al.. 2024. Molecular Regulation of Porcine Skeletal Muscle Development: Insights from Research on CDC23 Expression and Function.. Int J Mol Sci 25(7) PMID: 38612477
