GO:2000138 positive regulation of cell proliferation involved in heart morphogenesis: Mechanism, Genes and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:2000138 describes any process that activates or increases the frequency, rate or extent of cell proliferation specifically during heart morphogenesis.
• It is a biological_process term that sits at the intersection of cardiac development and cell-cycle control, and is distinct from generic cell proliferation terms.
• Key regulators include cardiac transcription factors such as Nkx2-5 and Pitx2c, which pattern the developing heart and influence proliferative expansion of cardiac progenitors.
• MicroRNAs such as miR-1, miR-133a/b and miR-208a are expressed in human fetal hearts and correlate with apoptotic and proliferation markers, linking non-coding RNA control to cardiac growth.
• Cardiac stem/progenitor cell pools, including c-Kit-positive cells, can be activated by stem cell factor and contribute to myocardial renewal, a process relevant to positive regulation of cardiac cell proliferation.
• Dysregulation of cardiac proliferative signaling is implicated in congenital heart defects, cardiomyopathies and aging-related myocardial dysfunction.
Description
GO:2000138, positive regulation of cell proliferation involved in heart morphogenesis, is a Gene Ontology biological_process term that captures the upstream signals and molecular events that increase the frequency, rate or extent of cell division specifically within the context of heart development. Unlike broad proliferation terms, GO:2000138 is restricted to proliferation that occurs as part of heart morphogenesis, making it a precise annotation target for cardiac developmental biologists. Understanding this term helps researchers interpret how cardiac progenitors expand, how chamber and outflow tract structures are patterned, and how perturbations in these processes contribute to congenital and acquired heart disease. The term is experimentally supported by studies of cardiac transcription factors and non-coding RNAs. For example, Pitx2c and Nkx2-5 are required for the formation and identity of the pulmonary myocardium, a developmental process that depends on regional control of cardiac cell proliferation. In human fetal hearts, expression of miR-1, miR-133a/b and miR-208a correlates with apoptotic and proliferation markers, indicating that microRNA networks help set the proliferative balance during cardiac growth. Because heart morphogenesis is a tightly timed sequence of progenitor expansion, differentiation and morphogenetic remodeling, positive regulation of cell proliferation is a central node for both normal development and disease. Researchers studying GO:2000138 therefore need tools to test whether candidate genes, non-coding RNAs or signaling pathways causally increase cardiac cell proliferation in vivo and in vitro.
positive regulation of cell proliferation involved in heart morphogenesis At A Glance
| GO ID | GO:2000138 |
|---|---|
| GO term | positive regulation of cell proliferation involved in heart morphogenesis |
| Ontology | biological_process |
| Synonym | none |
| Major function | Activates or increases the frequency, rate or extent of cell proliferation during heart morphogenesis |
| Related cardiac regulators | Nkx2-5, Pitx2c, c-Kit-positive cardiac stem cells, miR-1, miR-133a/b, miR-208a |
| Developmental context | Heart morphogenesis, including pulmonary myocardium formation and cardiac progenitor expansion |
| Disease relevance | Congenital heart defects, cardiomyopathies and aging-related myocardial dysfunction |
| Research methods | Lineage tracing, proliferation markers, microRNA profiling, stem cell activation assays |
What Is GO:2000138?
In plain terms, GO:2000138 describes the biological processes that switch on or boost cell division during the formation of the heart. According to the QuickGO definition, it is any process that activates or increases the frequency, rate or extent of cell proliferation involved in heart morphogenesis. This means the term covers signaling events, transcription factor activity and microRNA-mediated regulation that positively drive cardiac progenitor or cardiomyocyte proliferation as part of heart development, rather than proliferation in unrelated tissues.
Why Is positive regulation of cell proliferation involved in heart morphogenesis Important in Cell Biology?
GO:2000138 matters because the size and cellularity of the developing heart depend on precisely controlled positive regulation of cardiac cell proliferation. When this regulation is too low, cardiac structures can be underdeveloped; when it is excessive or mislocalized, maladaptive growth and disease can follow. The term therefore provides a framework for linking developmental signaling, transcription factor networks and non-coding RNAs to clinically relevant cardiac phenotypes.
• Defines a specific developmental process that is essential for normal heart morphogenesis and chamber formation.
• Provides a controlled vocabulary for annotating genes and pathways that drive cardiac progenitor expansion.
• Links cardiac transcription factors such as Nkx2-5 and Pitx2c to proliferative control in the developing heart.
• Connects microRNA networks (miR-1, miR-133a/b, miR-208a) to apoptotic and proliferation balance in human fetal hearts.
• Highlights cardiac stem/progenitor cell activation, including c-Kit-positive cells, as a mechanism of myocardial renewal.
• Supports research into congenital heart defects and cardiomyopathies where proliferative signaling is perturbed.
• Offers a conceptual bridge between developmental biology and regenerative cardiology.
• Guides experimental design for knockout, knock-in and overexpression models of cardiac proliferation genes.
What Happens During positive regulation of cell proliferation involved in heart morphogenesis?
Initiation by cardiac developmental signals
In simple terms: The process starts when signals tell cardiac cells to divide during heart formation.
Positive regulation of cell proliferation involved in heart morphogenesis begins with developmental cues that activate cardiac progenitors. Studies of pulmonary myocardium formation show that Pitx2c and Nkx2-5 are required for the formation and identity of this tissue, indicating that regional transcription factor activity sets the stage for proliferative expansion in specific heart compartments. These signals are part of the broader morphogenetic program that patterns the heart tube and its derivatives.
Transcription factor control of cardiac proliferation
In simple terms: Master heart transcription factors switch on genes that make heart cells divide.
Cardiac transcription factors such as Nkx2-5 and Pitx2c influence the proliferative behavior of cardiac cells during morphogenesis. Their requirement for pulmonary myocardium formation demonstrates that loss of these factors disrupts normal developmental proliferation and identity. This transcriptional layer is a core component of GO:2000138 because it directly activates or increases the frequency of cell proliferation in the developing heart.
MicroRNA-mediated modulation of proliferation and apoptosis
In simple terms: Small RNA molecules fine-tune how much heart cells divide or die.
MicroRNAs are key modulators of the proliferative balance in the heart. In human fetal hearts, miR-1, miR-133a/b and miR-208a expression correlates with apoptotic and proliferation markers, suggesting that these non-coding RNAs help coordinate positive regulation of cell proliferation during cardiac growth. Their coordinated expression patterns provide a molecular signature of the proliferative state in developing myocardium.
Cardiac stem and progenitor cell activation
In simple terms: Resident heart stem cells can be awakened to divide and help the heart.
Cardiac stem/progenitor cells, including c-Kit-positive cells nested in hypoxic niches, can be activated by stem cell factor, reversing aging myopathy in experimental models. This activation represents a positive regulatory input to cardiac cell proliferation and is relevant to understanding how endogenous progenitor pools contribute to heart morphogenesis and repair.
Integration with morphogenetic remodeling
In simple terms: Cell division is coordinated with the physical shaping of the heart.
Positive regulation of cell proliferation must be integrated with morphogenetic remodeling to produce a correctly shaped heart. The requirement for Pitx2c and Nkx2-5 in pulmonary myocardium formation illustrates how proliferative control is coupled to regional identity and structural patterning. Disruption of this integration can lead to malformed cardiac structures, underscoring the developmental importance of GO:2000138.
Key Genes Involved in GO:2000138 positive regulation of cell proliferation involved in heart morphogenesis
The following genes and non-coding RNAs have been experimentally linked to positive regulation of cell proliferation during heart morphogenesis or to related cardiac proliferative processes.
| Gene | Major Role | Research Relevance |
|---|---|---|
| Nkx2-5 | Cardiac transcription factor required for pulmonary myocardium formation and identity | Models of cardiac morphogenesis and congenital heart defects |
| Pitx2c | Transcription factor required for pulmonary myocardium formation and regional identity | Left-right patterning and cardiac proliferation studies |
| c-Kit (KIT) | Marker of cardiac stem/progenitor cells activated by stem cell factor | Cardiac regeneration and aging myopathy research |
| miR-1 | MicroRNA correlated with apoptotic and proliferation markers in human fetal hearts | Non-coding RNA control of cardiac growth |
| miR-133a | MicroRNA correlated with apoptotic and proliferation markers in human fetal hearts | Cardiac proliferation and apoptosis balance |
| miR-133b | MicroRNA correlated with apoptotic and proliferation markers in human fetal hearts | Cardiac proliferation and apoptosis balance |
| miR-208a | MicroRNA correlated with apoptotic and proliferation markers in human fetal hearts | Cardiac hypertrophy and developmental proliferation |
| ADAMTS-7 | Plasma levels associated with diastolic dysfunction in type 2 diabetes | Cardiac remodeling and extracellular matrix research |
| CHD7 | Maintains neural stem cell quiescence and prevents premature depletion | Developmental stem cell proliferation models |
| Iroquois genes | Influence proximo-distal morphogenesis during lung development | Comparative morphogenesis and proliferation studies |
| Bone marrow mesenchymal stem cell-derived small extracellular vesicles | Promote periodontal regeneration | Stem cell-derived vesicle research |
| HL-1 cardiac cell-derived extracellular vesicles | MicroRNA profiling of cardiac cell-derived vesicles | Cardiac extracellular vesicle and non-coding RNA studies |
How Is positive regulation of cell proliferation involved in heart morphogenesis Regulated?
Positive regulation of cell proliferation involved in heart morphogenesis is controlled by a combination of transcription factors, microRNAs and stem cell factor signaling. Nkx2-5 and Pitx2c are required for regional cardiac identity and proliferation during pulmonary myocardium formation. MicroRNAs such as miR-1, miR-133a/b and miR-208a correlate with apoptotic and proliferation markers in human fetal hearts, indicating that they help set the proliferative balance. In addition, stem cell factor activates c-Kit-positive cardiac stem cells nested in hypoxic niches, providing an extrinsic regulatory input that can reverse aging myopathy in experimental settings. Together, these layers form a regulatory network that tunes the frequency and extent of cardiac cell proliferation during morphogenesis.
positive regulation of cell proliferation involved in heart morphogenesis and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| Nkx2-5 | Congenital heart defects and pulmonary myocardium malformation | Knockout or point-mutation cardiac progenitor models |
| Pitx2c | Cardiac left-right patterning defects and morphogenesis errors | Knock-in reporter or knockout models |
| c-Kit (KIT) | Aging myopathy and impaired cardiac regeneration | Stem cell factor overexpression or c-Kit lineage tracing |
| miR-1 / miR-133a/b / miR-208a | Altered proliferation and apoptosis in fetal heart development | MicroRNA overexpression or knockout in cardiac cells |
| ADAMTS-7 | Diastolic dysfunction in type 2 diabetes | Plasma biomarker and cardiac remodeling models |
Congenital heart defects and morphogenetic errors
Disruption of the transcriptional programs that control cardiac proliferation can lead to malformed heart structures. The requirement for Pitx2c and Nkx2-5 in pulmonary myocardium formation demonstrates that loss of these regulators impairs normal morphogenesis, a process directly linked to GO:2000138. Such defects underscore the clinical importance of understanding positive regulation of cell proliferation during heart development.
Aging myopathy and cardiac stem cell dysfunction
Cardiac stem/progenitor cells, including c-Kit-positive cells, can be activated by stem cell factor to reverse aging myopathy in experimental models. This suggests that impaired positive regulation of cardiac cell proliferation contributes to age-related myocardial dysfunction and that targeting these pathways may have therapeutic potential.
Diastolic dysfunction and metabolic heart disease
Plasma ADAMTS-7 levels are associated with diastolic dysfunction in patients with type 2 diabetes mellitus. Although this link is not a direct measure of cardiac proliferation, it highlights how extracellular matrix and remodeling pathways intersect with cardiac growth and function, providing context for studying proliferative regulation in metabolic heart disease.
From positive regulation of cell proliferation involved in heart morphogenesis-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of Nkx2-5 reduce cardiac proliferation during morphogenesis? | Nkx2-5 knockout or conditional knockout in cardiac progenitors |
| Does Pitx2c mutation alter regional cardiac proliferation? | Pitx2c point-mutation or knockout knock-in models |
| Can stem cell factor activate c-Kit-positive cardiac stem cells? | c-Kit lineage tracing with stem cell factor overexpression |
| Do miR-1, miR-133a/b or miR-208a modulate cardiac proliferation? | MicroRNA overexpression or sponge knockdown in cardiac cells |
| Does ADAMTS-7 influence cardiac remodeling in metabolic disease? | ADAMTS-7 knockout or overexpression in diabetic cardiomyopathy models |
| Can extracellular vesicles from cardiac cells transfer proliferative signals? | HL-1 cardiac cell-derived extracellular vesicle profiling |
How to Study the positive regulation of cell proliferation involved in heart morphogenesis Process
| Method | What It Measures | Typical Application |
|---|---|---|
| EdU/Ki-67 immunostaining | Cell proliferation in cardiac tissue | Quantifying cardiac progenitor expansion |
| MicroRNA profiling | Expression of non-coding RNAs | Identifying proliferative microRNA signatures |
| Lineage tracing | Origin and fate of cardiac progenitors | Tracking c-Kit-positive cardiac stem cells |
| Chromatin immunoprecipitation | Transcription factor binding sites | Mapping Nkx2-5 and Pitx2c targets |
| Extracellular vesicle isolation | Vesicle-associated microRNAs | Cardiac cell-derived vesicle studies |
| Stem cell factor treatment | Activation of c-Kit-positive cells | Reversing aging myopathy in models |
| Apoptosis assays | Cell death markers | Balancing proliferation and apoptosis in fetal hearts |
Proliferation marker analysis in cardiac tissue
Immunostaining for proliferation markers such as Ki-67 or EdU incorporation allows researchers to quantify cell proliferation in developing hearts. These methods can be combined with lineage tracing to determine whether specific cardiac progenitor populations expand during morphogenesis, providing direct evidence for GO:2000138.
MicroRNA profiling and functional assays
MicroRNA profiling of cardiac cells and their extracellular vesicles, as performed in HL-1 cardiac cells, identifies non-coding RNAs that may regulate proliferation. Functional follow-up using mimics or inhibitors of miR-1, miR-133a/b or miR-208a can test their causal role in modulating apoptotic and proliferation markers in fetal heart models.
Cardiac stem cell activation assays
Assays that measure c-Kit-positive cardiac stem cell activation in response to stem cell factor can reveal extrinsic regulatory inputs to cardiac proliferation. These experiments are useful for studying how endogenous progenitor pools contribute to myocardial renewal and how aging affects this process.
Transcriptional and epigenomic profiling
Chromatin immunoprecipitation and transcriptomic profiling of cardiac transcription factors such as Nkx2-5 and Pitx2c can identify target genes that drive proliferation during heart morphogenesis. Such approaches help define the molecular network underlying GO:2000138.
How CRISPR Can Be Used to Study GO:2000138 positive regulation of cell proliferation involved in heart morphogenesis
Knockout
CRISPR knockout of cardiac transcription factors such as Nkx2-5 or Pitx2c can be used to test their requirement for positive regulation of cell proliferation during heart morphogenesis. Loss-of-function models help determine whether a candidate gene is necessary for cardiac progenitor expansion and normal morphogenesis.
Point Mutation
Point mutations in cardiac regulatory genes can model human variants that alter proliferative signaling without fully ablating protein function. For example, introducing disease-associated point mutations into Nkx2-5 or Pitx2c allows researchers to study subtle effects on cardiac proliferation and morphogenesis.
Knock-in
Knock-in of reporter cassettes or epitope tags into cardiac genes enables precise tracking of expression and localization during heart development. Tagged knock-in models for Nkx2-5 or Pitx2c can reveal when and where these factors act to promote proliferation in the developing heart.
Overexpression
CRISPR-mediated overexpression or activation of cardiac proliferation genes, such as stem cell factor or microRNA clusters, can test whether increased signaling is sufficient to boost cardiac cell proliferation. Overexpression models are useful for studying regenerative potential and maladaptive growth.
How EDITGENE Supports positive regulation of cell proliferation involved in heart morphogenesis Research
Researchers studying positive regulation of cell proliferation involved in heart morphogenesis-related genes often need to determine whether a candidate gene is causally involved in cardiac progenitor expansion, whether a specific variant alters proliferative signaling, or whether overexpression is sufficient to drive cardiac cell division. EDITGENE provides the CRISPR tools and services needed to build these models efficiently and reproducibly.
Contact EDITGENE today to design your custom CRISPR model for positive regulation of cell proliferation involved in heart morphogenesis research.
Frequently Asked Questions About positive regulation of cell proliferation involved in heart morphogenesis
What is GO:2000138?
GO:2000138 is the Gene Ontology term for positive regulation of cell proliferation involved in heart morphogenesis, describing any process that activates or increases the frequency, rate or extent of cell proliferation specifically during heart development.
What genes are involved in positive regulation of cell proliferation involved in heart morphogenesis?
Key genes include cardiac transcription factors such as Nkx2-5 and Pitx2c, the stem cell factor receptor c-Kit, and microRNAs such as miR-1, miR-133a/b and miR-208a.
How is cardiac cell proliferation regulated during heart morphogenesis?
It is regulated by transcription factor networks, microRNAs and stem cell factor signaling that together tune the frequency and extent of cardiac progenitor division.
Why is positive regulation of cell proliferation important for heart development?
It ensures that the developing heart has enough cells to form correct structures; disruption can lead to congenital heart defects and malformations.
What diseases are linked to dysregulated cardiac cell proliferation?
Congenital heart defects, aging myopathy and metabolic heart disease with diastolic dysfunction are among the conditions linked to altered cardiac proliferative signaling.
Which microRNAs regulate proliferation in human fetal hearts?
miR-1, miR-133a/b and miR-208a expression correlates with apoptotic and proliferation markers in human fetal hearts.
Can cardiac stem cells be activated to proliferate?
Yes, c-Kit-positive cardiac stem cells nested in hypoxic niches can be activated by stem cell factor, reversing aging myopathy in experimental models.
What research methods are used to study GO:2000138?
Methods include proliferation marker staining, microRNA profiling, lineage tracing, chromatin immunoprecipitation and cardiac stem cell activation assays.
How can CRISPR help study cardiac cell proliferation?
CRISPR knockout, point mutation, knock-in and overexpression models allow researchers to test necessity and sufficiency of candidate genes in cardiac proliferation.
What services does EDITGENE offer for heart morphogenesis research?
EDITGENE provides knockout, point-mutation, knock-in, overexpression cell models, CRISPR library screening and bioinformatics services for cardiac proliferation research.
Conclusion
GO:2000138, positive regulation of cell proliferation involved in heart morphogenesis, is a precise biological_process term that captures the signals and molecular events driving cardiac cell division during heart development. Its key regulators include cardiac transcription factors, microRNAs and stem cell factor signaling, all of which have been experimentally linked to cardiac proliferation and morphogenesis. Understanding this process is essential for uncovering the origins of congenital heart defects and for developing regenerative strategies. EDITGENE supports this research with comprehensive CRISPR cell model and screening services tailored to cardiac proliferation genes.
References
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