GO:0003241 growth involved in heart morphogenesis: Developmental Growth, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0003241 (growth involved in heart morphogenesis) is defined as developmental growth that contributes to the shaping of the heart.
• It encompasses coordinated cardiomyocyte proliferation, hypertrophy, and metabolic remodeling that together build the four-chambered heart.
• Key molecular drivers include FGF signaling, Slit-Robo guidance, SLC25A1-dependent metabolic reprogramming, and BCAA catabolism in cardiac lymphatic endothelium.
• Disruption of growth involved in heart morphogenesis causes congenital heart defects (CHDs), which affect approximately 1% of live births.
• Zebrafish and mouse models are the primary systems for studying cardiac growth because they permit live imaging and genetic manipulation.
• CRISPR knockout, point-mutation, knock-in, and overexpression models enable causal testing of candidate genes in this process.
Description
Growth involved in heart morphogenesis (GO:0003241) is a biological process defined as developmental growth that contributes to the shaping of the heart. It is not merely an increase in cell number or size; it is the spatially and temporally coordinated expansion of cardiac tissues that transforms the early heart tube into a mature, multi-chambered organ. This process depends on precise regulation of cardiomyocyte proliferation, differentiation, and metabolic state, as well as on interactions with non-myocardial cell types such as endocardial, vascular, and lymphatic endothelial cells. Researchers study GO:0003241 because its failure is a direct cause of congenital heart defects and because reactivation of its programs underlies cardiac regeneration and repair after injury. Understanding the genes and signaling pathways that execute growth involved in heart morphogenesis is therefore central to developmental biology, regenerative medicine, and cardiovascular disease research.
growth involved in heart morphogenesis At A Glance
| GO ID | GO:0003241 |
|---|---|
| GO term | growth involved in heart morphogenesis |
| Ontology | biological_process |
| Synonym | none |
| Definition | Developmental growth that contributes to the shaping of the heart. |
| Major function | Coordinated cell proliferation, hypertrophy, and metabolic remodeling that build the heart during development. |
| Related processes | Cardiomyocyte proliferation, cardiac looping, chamber formation, angiogenesis, and metabolic reprogramming. |
| Key signaling pathways | FGF, Slit-Robo, BCAA catabolism, and mitochondrial citrate transport. |
| Disease relevance | Congenital heart defects, heart failure with preserved ejection fraction (HFpEF), and impaired cardiac regeneration. |
What Is GO:0003241?
In our own words, GO:0003241 describes the developmental growth processes that physically shape the heart. It covers the cell proliferation, cell enlargement, and tissue expansion events that occur during embryogenesis and fetal development and that are required for the heart to acquire its correct size, chamber configuration, and wall thickness. This term is distinct from pathological cardiac hypertrophy or adult heart growth; it specifically refers to growth as a morphogenetic force during heart development.
Why Is growth involved in heart morphogenesis Important in Cell Biology?
Growth involved in heart morphogenesis is important because it is the developmental process that builds a functional heart, and errors in this process are among the most common causes of congenital heart defects, which affect approximately 1% of live births. The same cellular programs, when reactivated in adults, can contribute to cardiac repair or, when dysregulated, to heart failure. Studying GO:0003241 therefore informs both developmental biology and clinical cardiology.
• Congenital heart defects (CHDs) arise from disrupted growth involved in heart morphogenesis and are the most common birth defects in humans.
• Cardiomyocyte proliferation during development is a model for inducing regeneration in the adult heart after myocardial infarction.
• Metabolic reprogramming, including SLC25A1-dependent citrate transport, is required for normal cardiac morphogenesis.
• FGF signaling links metabolic state to vascular development, which in turn supports cardiac growth.
• Slit-Robo signaling guides cell positioning and tissue shaping during heart development.
• Cardiac lymphatic endothelial BCAA catabolism maintains lymphatic integrity and prevents HFpEF, linking developmental growth pathways to adult disease.
• Zebrafish heart regeneration occurs by cardiomyocyte dedifferentiation and proliferation, providing a tractable model for GO:0003241.
• Understanding these pathways supports the development of cell models for drug discovery and disease modeling.
What Happens During growth involved in heart morphogenesis?
Initiation of cardiac growth from the early heart tube
In simple terms: The heart starts as a simple tube and must grow and bend to become a multi-chambered organ.
During early embryogenesis, the linear heart tube undergoes rapid growth and looping, driven by cardiomyocyte proliferation and differentiation. This initial growth phase establishes the basic blueprint for chamber formation and requires precise temporal and spatial control of cell division. Disruption of this early growth leads to severe structural defects.
Cardiomyocyte proliferation and hypertrophy
In simple terms: Heart muscle cells multiply and enlarge to give the heart its final size and shape.
Cardiomyocyte proliferation is the primary driver of cardiac growth during development, and it is later supplemented by hypertrophic growth of individual cells. In zebrafish, cardiomyocyte dedifferentiation and proliferation are sufficient to regenerate lost heart tissue, demonstrating the plasticity of these growth programs. In mammals, the proliferative capacity of cardiomyocytes declines after birth, which limits regeneration.
Metabolic reprogramming during cardiac growth
In simple terms: Growing heart cells switch their energy use to support rapid building of new tissue.
The mitochondrial citrate carrier SLC25A1 regulates metabolic reprogramming and is required for morphogenesis in the developing heart. Loss of SLC25A1 impairs cardiac growth and leads to structural defects, indicating that metabolic flux is a core component of GO:0003241. FGF signaling also couples metabolic control to vascular development, which supports the growing heart.
Vascular and lymphatic contributions to heart shaping
In simple terms: Blood and lymph vessels grow alongside the heart and help shape it.
Angiogenesis after acute myocardial infarction is a recapitulation of developmental vascular growth, and developmental angiogenesis is essential for cardiac morphogenesis. Lymphatic endothelial branched-chain amino acid (BCAA) catabolic defects undermine cardiac lymphatic integrity and drive HFpEF, linking developmental growth pathways to adult heart failure. Slit-Robo signaling further guides cell migration and tissue patterning during heart development.
Chamber formation and maturation
In simple terms: The heart develops distinct chambers and matures into its final form.
Growth involved in heart morphogenesis culminates in the formation of septa and valves and the maturation of the four-chambered heart. This stage requires coordinated growth arrest and differentiation, and its failure results in congenital heart defects such as septal defects and valve anomalies. The transitional heart from fetal to neonatal life undergoes further growth and remodeling to adapt to extrauterine circulation.
Key Genes Involved in GO:0003241 growth involved in heart morphogenesis
The following genes and proteins have been experimentally implicated in growth involved in heart morphogenesis (GO:0003241) and related cardiac developmental processes.
| Gene | Major Role | Research Relevance |
|---|---|---|
| SLC25A1 | Mitochondrial citrate carrier; regulates metabolic reprogramming | Required for cardiac morphogenesis; KO causes structural defects |
| FGF | Fibroblast growth factor signaling; links metabolism to vascular development | Controls vascular growth supporting heart development |
| SLIT | Secreted ligand for Robo receptors; guides cell positioning | Regulates heart development and cell migration |
| ROBO | Receptor for Slit; mediates guidance cues | Slit-Robo signaling in heart development |
| BCAA catabolic enzymes | Branched-chain amino acid catabolism in lymphatic endothelium | Defects drive HFpEF and impair cardiac lymphatic integrity |
| VEGFA | Vascular endothelial growth factor; promotes angiogenesis | Angiogenesis after myocardial infarction and during development |
| MYH6 | Cardiac myosin heavy chain; contractile protein | Marker of cardiomyocyte differentiation and growth |
| MYH7 | Cardiac myosin heavy chain; contractile protein | Expressed during cardiac growth and maturation |
| NKX2-5 | Homeobox transcription factor; early cardiac specification | Master regulator of heart development |
| GATA4 | Zinc finger transcription factor; cardiac gene expression | Essential for cardiac morphogenesis |
| TBX5 | T-box transcription factor; chamber specification | Mutations cause Holt-Oram syndrome and CHDs |
| MEF2C | MADS-box transcription factor; cardiomyocyte differentiation | Regulates cardiac growth and remodeling |
| HAND1 | Basic helix-loop-helix transcription factor | Required for ventricular development |
| HAND2 | Basic helix-loop-helix transcription factor | Required for cardiac morphogenesis |
| NOTCH1 | Transmembrane receptor; cell fate decisions | Regulates endocardial and myocardial growth |
| WNT | Secreted signaling proteins; cardiac progenitor regulation | Controls cardiac growth and differentiation |
| BMP | Bone morphogenetic proteins; cardiac induction | Regulates heart morphogenesis |
| NRG1 | Neuregulin 1; ErbB signaling | Promotes cardiomyocyte proliferation and survival |
How Is growth involved in heart morphogenesis Regulated?
Growth involved in heart morphogenesis is regulated by a combination of transcriptional networks, growth factor signaling, and metabolic cues. FGF signaling couples metabolic state to vascular development, which in turn supports cardiac growth. Slit-Robo signaling provides guidance cues that pattern the developing heart. Metabolic regulation through SLC25A1 and BCAA catabolism controls the availability of substrates for biosynthesis and energy production during cardiac growth. These pathways are integrated with cell cycle regulators and differentiation factors to ensure that growth occurs at the correct time and place.
growth involved in heart morphogenesis and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| NKX2-5 | Congenital heart defects; cardiac septation defects | Knockout mouse; patient-derived iPSC-CM |
| GATA4 | Congenital heart defects; atrial septal defects | Knockout mouse; zebrafish morpholino |
| TBX5 | Holt-Oram syndrome; CHDs | Knock-in mouse; iPSC-CM |
| SLC25A1 | Cardiac morphogenesis defects; metabolic reprogramming | Knockout mouse; zebrafish |
| BCAA catabolic enzymes | HFpEF; cardiac lymphatic dysfunction | Endothelial-specific knockout mouse |
Congenital heart defects (CHDs)
Disruption of growth involved in heart morphogenesis is a direct cause of congenital heart defects, which include septal defects, valve anomalies, and chamber malformations. Mutations in cardiac transcription factors such as NKX2-5, GATA4, and TBX5 impair cardiac growth and lead to CHDs. Environmental and metabolic factors can also perturb these pathways during fetal development.
Heart failure with preserved ejection fraction (HFpEF)
Defects in cardiac lymphatic endothelial BCAA catabolism undermine lymphatic integrity and drive HFpEF, demonstrating that developmental growth and metabolic pathways in the heart remain relevant in adult disease. This links GO:0003241-associated metabolic processes to a major clinical syndrome.
Impaired cardiac regeneration after myocardial infarction
The adult mammalian heart has limited regenerative capacity because cardiomyocyte proliferation declines after birth. Understanding the growth programs of GO:0003241 may inform strategies to reactivate cardiomyocyte proliferation and promote repair after myocardial infarction. Zebrafish models show that dedifferentiation and proliferation of cardiomyocytes can regenerate heart tissue.
From growth involved in heart morphogenesis-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Is a candidate gene required for cardiac growth? | CRISPR knockout in zebrafish or mouse |
| Does a specific point mutation cause CHD? | CRISPR point-mutation knock-in in mouse |
| How does a tagged protein localize during heart development? | CRISPR knock-in of fluorescent tag |
| Does overexpression of a growth factor drive cardiac growth? | Transgenic overexpression in mouse or zebrafish |
| What is the transcriptional response during cardiac growth? | RNA-seq of developing hearts |
| How does metabolism change during cardiac morphogenesis? | Metabolomics and Seahorse analysis in KO models |
How to Study the growth involved in heart morphogenesis Process
| Method | What It Measures | Typical Application |
|---|---|---|
| CRISPR knockout | Loss-of-function phenotype | Testing gene requirement in cardiac growth |
| CRISPR point mutation | Effect of specific variant | Modeling CHD-associated mutations |
| CRISPR knock-in (tag) | Protein localization and dynamics | Live imaging of cardiac proteins |
| RNA-seq | Transcriptome changes | Identifying growth-associated gene networks |
| Single-cell RNA-seq | Cell-type-specific expression | Mapping cardiac cell diversity during growth |
| Metabolomics | Metabolite levels | Detecting metabolic reprogramming |
| Live imaging | Cell behavior and tissue morphology | Visualizing heart morphogenesis in zebrafish |
Genome editing and transgenic models
CRISPR/Cas9 knockout, point-mutation knock-in, and tagged knock-in in zebrafish and mice are used to test the function of candidate genes in growth involved in heart morphogenesis. These models allow precise manipulation of endogenous loci and enable causal inference.
Transcriptomics and single-cell RNA sequencing
RNA-seq and single-cell RNA-seq of developing hearts reveal gene expression programs and cell-type-specific contributions to cardiac growth. These methods identify novel regulators and markers of cardiomyocyte proliferation and differentiation.
Metabolic profiling
Metabolomics, Seahorse extracellular flux analysis, and isotope tracing measure metabolic reprogramming during cardiac growth. SLC25A1-dependent citrate transport was discovered using such approaches.
Imaging and lineage tracing
Live imaging in zebrafish and lineage tracing in mice allow visualization of cardiomyocyte proliferation, migration, and tissue shaping during heart morphogenesis. These techniques are essential for understanding the dynamic nature of GO:0003241.
How CRISPR Can Be Used to Study GO:0003241 growth involved in heart morphogenesis
Knockout
CRISPR knockout of candidate genes in zebrafish or mouse embryos is used to determine whether a gene is required for growth involved in heart morphogenesis. For example, knockout of SLC25A1 impairs cardiac morphogenesis and metabolic reprogramming.
Point Mutation
CRISPR point-mutation knock-in introduces specific patient-associated variants into the endogenous locus to test their causal role in congenital heart defects. This approach distinguishes pathogenic variants from benign polymorphisms.
Knock-in
Knock-in of fluorescent or epitope tags allows visualization and biochemical isolation of proteins involved in cardiac growth. Tagged knock-in models are valuable for live imaging of heart morphogenesis.
Overexpression
CRISPR-mediated overexpression or transgenic overexpression of growth factors such as FGF or NRG1 can drive cardiomyocyte proliferation and cardiac growth. These models help identify sufficiency of a gene for GO:0003241.
How EDITGENE Supports growth involved in heart morphogenesis Research
Researchers studying growth involved in heart morphogenesis-related genes often need to determine whether a candidate gene is causally involved in cardiac developmental growth or is merely correlated with it. EDITGENE provides the CRISPR tools and cell models to make that determination rigorously.
Contact EDITGENE today to design your custom CRISPR model for growth involved in heart morphogenesis research.
Related Products
| Product name | Cat.No. | Species | Gene ID | |
|---|---|---|---|---|
| NOTCH1 Knockout HEK293 Cell Line | EDJ-KQ435 | Human | 4851 | Details Get a Quote |
| MESP1 Knockout HEK293 Cell Line | EDJ-KQ14237 | Human | 55897 | Details Get a Quote |
| NOTCH1 Knockout A-549 Cell Line | EDJ-KQ18001 | Human | 4851 | Details Get a Quote |
| MESP1 Knockout A-549 Cell Line | EDJ-KQ44213 | Human | 55897 | Details Get a Quote |
| MESP1 Knockout HCT 116 Cell Line | EDJ-KQ44214 | Human | 55897 | Details Get a Quote |
| MESP1 Knockout HeLa Cell Line | EDJ-KQ44215 | Human | 55897 | Details Get a Quote |
| NOTCH1 Knockout HeLa Cell Line | EDJ-KQ18299 | Human | 4851 | Details Get a Quote |
| NOTCH1 Knockout HCT 116 Cell Line | EDJ-KQ18733 | Human | 4851 | Details Get a Quote |
| NOTCH1 (p.D2185=) Point Mutation in HAP1 Cell Line | EDC03335 | Human | 4851 | Details Get a Quote |
| NOTCH1 (p.G1788S) Point Mutation in HAP1 Cell Line | EDC03336 | Human | 4851 | Details Get a Quote |
| NOTCH1 (p.D1698=) Point Mutation in HAP1 Cell Line | EDC03337 | Human | 4851 | Details Get a Quote |
| NOTCH1 (p.N755=) Point Mutation in HAP1 Cell Line | EDC03338 | Human | 4851 | Details Get a Quote |
| NOTCH1 (p.P668A) Point Mutation in HAP1 Cell Line | EDC03339 | Human | 4851 | Details Get a Quote |
| NOTCH1 (p.N104=) Point Mutation in HAP1 Cell Line | EDC03340 | Human | 4851 | Details Get a Quote |
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Frequently Asked Questions About growth involved in heart morphogenesis
What is GO:0003241 growth involved in heart morphogenesis?
GO:0003241 is a Gene Ontology biological process term defined as developmental growth that contributes to the shaping of the heart.
What genes are involved in growth involved in heart morphogenesis?
Key genes include SLC25A1, FGF, SLIT, ROBO, NKX2-5, GATA4, TBX5, and BCAA catabolic enzymes, among others.
Why is growth involved in heart morphogenesis important?
It is essential for building a functional heart, and its disruption causes congenital heart defects and contributes to adult heart failure.
What diseases are associated with defects in heart morphogenesis?
Congenital heart defects, HFpEF, and impaired cardiac regeneration after myocardial infarction.
How do researchers study growth involved in heart morphogenesis?
Using CRISPR knockout and knock-in models, RNA-seq, metabolomics, and live imaging in zebrafish and mice.
What is the role of SLC25A1 in heart morphogenesis?
SLC25A1 regulates metabolic reprogramming and is required for morphogenesis in the developing heart.
How does FGF signaling contribute to cardiac growth?
FGF signaling couples metabolic control to vascular development, which supports the growing heart.
What is the link between BCAA catabolism and heart failure?
Defects in lymphatic endothelial BCAA catabolism undermine cardiac lymphatic integrity and drive HFpEF.
Can zebrafish be used to study heart morphogenesis?
Yes, zebrafish are a key model because they allow live imaging and genetic manipulation, and they can regenerate heart tissue via cardiomyocyte proliferation.
What CRISPR models are available for studying heart morphogenesis?
Knockout, point-mutation knock-in, tagged knock-in, and overexpression models in cell lines and animal models.
Conclusion
Growth involved in heart morphogenesis (GO:0003241) is a fundamental developmental process that builds the heart through coordinated cell proliferation, metabolic remodeling, and tissue patterning. Its disruption leads to congenital heart defects and contributes to adult cardiovascular disease, making it a critical area of research. Advances in CRISPR genome editing and multi-omics now allow precise interrogation of the genes and pathways that execute this process, offering new opportunities for therapeutic intervention.
References
- 1. Guo X et al.. 2025. Lymphatic Endothelial Branched-Chain Amino Acid Catabolic Defects Undermine Cardiac Lymphatic Integrity and Drive HFpEF.. Circulation 151(23):1651-1666 PMID: 40166847
- 2. Wu X et al.. 2021. Angiogenesis after acute myocardial infarction.. Cardiovasc Res 117(5):1257-1273 PMID: 33063086
- 3. Tan CMJ et al.. 2020. The Transitional Heart: From Early Embryonic and Fetal Development to Neonatal Life.. Fetal Diagn Ther 47(5):373-386 PMID: 31533099
- 4. Ohanele C et al.. 2024. The mitochondrial citrate carrier SLC25A1 regulates metabolic reprogramming and morphogenesis in the developing heart.. Commun Biol 7(1):1422 PMID: 39482367
- 5. Zubrzycki M et al.. 2024. Cardiac Development and Factors Influencing the Development of Congenital Heart Defects (CHDs): Part I.. Int J Mol Sci 25(13) PMID: 39000221
- 6. Jopling C et al.. 2010. Zebrafish heart regeneration occurs by cardiomyocyte dedifferentiation and proliferation.. Nature 464(7288):606-9 PMID: 20336145
- 7. Yu P et al.. 2017. FGF-dependent metabolic control of vascular development.. Nature 545(7653):224-228 PMID: 28467822
- 8. Zhao J et al.. 2018. Slit-Robo signalling in heart development.. Cardiovasc Res 114(6):794-804 PMID: 29538649
