GO:1902256 regulation of apoptotic process involved in outflow tract morphogenesis: Apoptosis Regulation, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:1902256 describes any process that modulates the frequency, rate or extent of apoptotic cell death specifically during outflow tract morphogenesis, the developmental program that forms the connection between the embryonic heart and the aortic/pulmonary arteries.
• Apoptosis is a normal and essential feature of cardiovascular development, including remodeling of the outflow tract, and its dysregulation is linked to congenital heart defects.
• Key molecular players include BMP signaling components (e.g., BMP2, BMP4, Smad4), Fas/FasL, YY1, Cdc42, and focal adhesion kinase (FAK), which influence neural crest and endocardial cushion cell survival [2,4,5,6,7,8].
• Experimental perturbation of apoptotic regulators such as FasL in the embryonic heart causes programmed cell death and outflow tract defects, directly demonstrating the importance of this GO term.
• DNA methylation abnormalities have been observed in congenital heart disease, suggesting epigenetic regulation of apoptotic and developmental pathways in the outflow tract.
• Researchers study GO:1902256 using knockout, knock-in, overexpression, and point-mutation models combined with lineage tracing, apoptosis assays, and imaging of the developing heart [2,4,6,7,8].
Description
GO:1902256, regulation of apoptotic process involved in outflow tract morphogenesis, is a biological process term that captures the control of programmed cell death specifically during the formation and remodeling of the cardiac outflow tract. The outflow tract is the embryonic structure that connects the heart tube to the aortic and pulmonary arteries, and its morphogenesis requires precise coordination of cell proliferation, migration, differentiation, and apoptosis. Apoptosis during cardiovascular development is not a pathological event but a normal developmental mechanism that helps shape the heart and its vessels. Disruption of this regulation can lead to congenital heart defects, making the study of GO:1902256 highly relevant to developmental biology and clinical genetics [1,3]. This GO term is defined as any process that modulates the frequency, rate or extent of apoptotic process involved in outflow tract morphogenesis. It is a regulatory term, meaning it does not describe the apoptotic execution machinery itself but rather the upstream and parallel signals that control when, where, and how much apoptosis occurs in the outflow tract. Key signaling pathways implicated in this regulation include bone morphogenetic protein (BMP) signaling, Fas/FasL signaling, and transcription factors such as YY1, as well as small GTPases and adhesion molecules that influence neural crest and endocardial cushion cell behavior [2,4,5,6,7,8]. For researchers, GO:1902256 provides a focused framework to interrogate how developmental apoptosis is controlled in a specific anatomical context. Understanding this regulation can reveal mechanisms of congenital heart disease, identify candidate genes for diagnostic and therapeutic strategies, and guide the design of CRISPR-based models to test gene function in vivo [1,2,3,4,5,6,7,8].
regulation of apoptotic process involved in outflow tract morphogenesis At A Glance
| GO ID | GO:1902256 |
|---|---|
| GO term | regulation of apoptotic process involved in outflow tract morphogenesis |
| Ontology | biological_process |
| Synonym | regulation of apoptosis involved in outflow tract morphogenesis |
| Definition | Any process that modulates the frequency, rate or extent of apoptotic process involved in outflow tract morphogenesis. |
| Major function | Controls programmed cell death during formation and remodeling of the cardiac outflow tract. |
| Related processes | Apoptosis, cardiovascular development, neural crest cell migration, endocardial cushion formation, outflow tract septation. |
| Key signaling pathways | BMP signaling, Fas/FasL signaling, YY1 transcriptional regulation, Cdc42-mediated migration, FAK-dependent adhesion signaling. |
| Disease relevance | Congenital heart defects, including outflow tract malformations such as persistent truncus arteriosus and tetralogy of Fallot. |
What Is GO:1902256?
In simple terms, GO:1902256 is about the control of cell death that occurs while the heart's outflow tract is being built. More formally, it refers to any biological process that modulates the frequency, rate, or extent of apoptosis specifically during outflow tract morphogenesis. This includes signals that promote or inhibit apoptosis in the cells that form the outflow tract, such as neural crest cells, endocardial cushion cells, and smooth muscle precursors. The term is a regulatory biological process and is distinct from the apoptotic process itself; it encompasses upstream signaling, transcriptional control, and epigenetic influences that determine whether apoptosis proceeds in this developmental context.
Why Is regulation of apoptotic process involved in outflow tract morphogenesis Important in Cell Biology?
GO:1902256 is important because apoptosis is a fundamental sculpting force in cardiovascular development, and its precise regulation in the outflow tract is required for normal heart formation. The outflow tract must be remodeled from a single tube into separate aortic and pulmonary outlets, a process that depends on the timely elimination of specific cell populations. When this regulation fails, the result can be severe congenital heart defects, which are among the most common birth anomalies in humans [1,3]. Understanding the molecular control of apoptotic process involved in outflow tract morphogenesis can therefore illuminate the etiology of these defects and suggest new avenues for prevention or intervention [1,3,8].
• Apoptosis is a normal component of cardiovascular development and is essential for correct outflow tract remodeling.
• Dysregulation of apoptosis in the outflow tract is associated with congenital heart defects such as outflow tract malformations [1,8].
• BMP signaling components, including BMP2, BMP4, and Smad4, regulate cell fate and survival in the developing outflow tract and endocardial cushions [5,6].
• Fas/FasL-mediated apoptosis in the embryonic heart can induce programmed cell death and outflow tract defects, directly linking this pathway to GO:1902256.
• Transcription factor YY1 is critical for cardiac morphogenesis and may influence apoptotic regulation in the outflow tract.
• Cdc42 activation by endothelin regulates neural crest cell migration in the cardiac outflow tract, a process that intersects with apoptotic remodeling.
• Focal adhesion kinase (FAK) regulates smooth muscle cell recruitment to the developing vasculature, which is relevant to outflow tract maturation.
• DNA methylation abnormalities in congenital heart disease suggest epigenetic control of developmental apoptosis pathways.
• Modeling GO:1902256 with CRISPR knockout, knock-in, and overexpression approaches can reveal causal gene-disease relationships [2,4,6,7,8].
• Understanding this term supports the development of diagnostic biomarkers and therapeutic strategies for congenital heart disease [1,3].
What Happens During regulation of apoptotic process involved in outflow tract morphogenesis?
Initiation of apoptotic signaling in the outflow tract
In simple terms: Certain cells in the developing outflow tract receive signals that tell them to die at the right time.
During outflow tract morphogenesis, apoptotic signaling is initiated by both extrinsic and intrinsic cues. Extrinsic signals include Fas ligand (FasL) binding to Fas receptor, which can trigger programmed cell death in the embryonic heart. BMP signaling through BMP2 and BMP4 also influences cell survival and apoptosis in the endocardial cushions and outflow tract. These signals are tightly regulated so that apoptosis occurs only in specific cell populations and at specific developmental stages.
Regulation by transcription factors and signaling intermediates
In simple terms: Master switches inside cells decide whether the death signal is followed through.
Transcription factors such as YY1 are critical for cardiac morphogenesis and can modulate apoptotic pathways in the outflow tract. Smad4, a central mediator of BMP signaling, is required to regulate the fate of cranial neural crest cells, which contribute to outflow tract formation. The balance between pro-apoptotic and pro-survival signals determines whether a cell undergoes apoptosis, and this balance is influenced by developmental cues and epigenetic modifications.
Cytoskeletal and adhesion dynamics in apoptotic regulation
In simple terms: How cells stick and move affects whether they survive or die during outflow tract formation.
Cdc42 activation by endothelin regulates neural crest cell migration in the cardiac outflow tract, and proper migration is necessary for normal outflow tract morphogenesis. Focal adhesion kinase (FAK) regulates smooth muscle cell recruitment to the developing vasculature, which is important for outflow tract maturation. Disruption of these cytoskeletal and adhesion processes can alter cell survival and apoptosis, thereby affecting outflow tract development [4,7].
Execution of apoptosis and tissue remodeling
In simple terms: Once the decision is made, cells are dismantled and the tissue is reshaped.
Apoptosis during cardiovascular development leads to the elimination of specific cells, allowing for proper remodeling of the outflow tract into separate aortic and pulmonary vessels. This execution phase involves caspase activation and DNA fragmentation, but the regulatory inputs described above determine the timing and location of cell death. Perturbation of this execution, for example by FasL gene transfer, can induce excessive programmed cell death and outflow tract defects.
Integration with neural crest and endocardial cushion development
In simple terms: Different cell types coordinate their death and survival to build the outflow tract correctly.
Neural crest cells and endocardial cushion cells are key populations in outflow tract morphogenesis, and their survival is regulated by BMP signaling, Smad4, and other factors [5,6]. Apoptosis in these populations must be balanced with proliferation and differentiation to ensure proper septation and valve formation. Dysregulation of these integrated processes can lead to congenital heart defects such as persistent truncus arteriosus [1,8].
Key Genes Involved in GO:1902256 regulation of apoptotic process involved in outflow tract morphogenesis
The following genes and proteins have been experimentally implicated in the regulation of apoptotic process involved in outflow tract morphogenesis, based on the verified literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| BMP2 | Bone morphogenetic protein 2; regulates endocardial cushion development and apoptosis | Studied in embryonic heart development and outflow tract morphogenesis |
| BMP4 | Bone morphogenetic protein 4; influences cell survival and apoptosis in the outflow tract | Key ligand in BMP signaling during cardiovascular development |
| Smad4 | Central mediator of BMP signaling; required for cranial neural crest cell fate | Knockout studies show defects in neural crest and outflow tract development |
| FasL | Fas ligand; induces programmed cell death in the embryonic heart | Gene transfer causes apoptosis and outflow tract defects |
| Fas | Fas receptor; mediates extrinsic apoptotic signaling | Implicated in developmental apoptosis in the heart |
| YY1 | Transcription factor critical for cardiac morphogenesis | Regulates genes involved in apoptosis and outflow tract development |
| Cdc42 | Small GTPase; regulates neural crest cell migration in the cardiac outflow tract | Activated by endothelin; affects migration and survival |
| FAK | Focal adhesion kinase; regulates smooth muscle cell recruitment to developing vasculature | Influences outflow tract maturation and cell survival |
| Endothelin | Signaling peptide; activates Cdc42 in neural crest cells | Regulates migration in the cardiac outflow tract |
| Caspase-3 | Executioner caspase in apoptosis | General apoptotic marker; downstream of regulatory signals |
| Caspase-8 | Initiator caspase in extrinsic apoptosis | Mediates Fas/FasL-induced apoptosis |
| Caspase-9 | Initiator caspase in intrinsic apoptosis | Involved in developmental apoptosis |
| Bcl-2 | Anti-apoptotic protein | Modulates cell survival in cardiovascular development |
| Bax | Pro-apoptotic protein | Promotes apoptosis in outflow tract remodeling |
| p53 | Tumor suppressor and apoptosis regulator | Can influence developmental apoptosis |
| Notch1 | Signaling receptor involved in cardiovascular development | May interact with apoptotic pathways in outflow tract |
| Wnt5a | Secreted signaling molecule | Implicated in outflow tract morphogenesis and cell survival |
| TGF-beta | Superfamily of growth factors including BMPs | Regulates apoptosis and differentiation in the outflow tract [5,6] |
How Is regulation of apoptotic process involved in outflow tract morphogenesis Regulated?
The regulation of apoptotic process involved in outflow tract morphogenesis is controlled by multiple signaling pathways and epigenetic mechanisms. BMP signaling through Smad4 is essential for neural crest cell fate and survival, and its disruption leads to outflow tract defects. Fas/FasL signaling provides an extrinsic apoptotic trigger that can be experimentally manipulated to induce programmed cell death and outflow tract malformations. Transcription factor YY1 is critical for cardiac morphogenesis and may directly or indirectly regulate apoptotic genes. Cdc42 activation by endothelin controls neural crest cell migration, which in turn affects cell survival and apoptotic remodeling. Focal adhesion kinase (FAK) regulates smooth muscle cell recruitment and vascular development, influencing the cellular environment in which apoptosis occurs. Additionally, DNA methylation abnormalities have been observed in congenital heart disease, suggesting that epigenetic regulation may modulate apoptotic pathways in the outflow tract.
regulation of apoptotic process involved in outflow tract morphogenesis and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| FasL | Outflow tract defects due to excessive apoptosis | Overexpression in embryonic heart; knockout of Fas/FasL |
| Smad4 | Neural crest cell fate defects and outflow tract malformations | Conditional knockout in neural crest cells |
| YY1 | Cardiac morphogenesis defects | Cardiac-specific knockout or knockdown |
| Cdc42 | Neural crest migration defects and outflow tract anomalies | Conditional knockout or point mutation |
| FAK | Vascular smooth muscle recruitment defects | Endothelial-specific knockout |
Congenital heart defects and outflow tract malformations
Dysregulation of apoptosis in the outflow tract is directly linked to congenital heart defects, including outflow tract malformations such as persistent truncus arteriosus and tetralogy of Fallot [1,8]. Experimental induction of apoptosis by FasL gene transfer in the embryonic heart causes outflow tract defects, demonstrating a causal relationship. DNA methylation abnormalities in congenital heart disease further support a role for epigenetic dysregulation of developmental apoptotic pathways.
Neural crest cell-related disorders
Neural crest cells are critical for outflow tract morphogenesis, and their fate is regulated by Smad4 and BMP signaling. Disruption of these pathways can lead to defects in neural crest-derived structures, including those of the cardiac outflow tract. Cdc42-mediated migration of neural crest cells is also essential, and its perturbation may contribute to outflow tract anomalies.
Epigenetic contributions to heart disease
DNA methylation abnormalities have been identified in patients with congenital heart disease, suggesting that epigenetic mechanisms may influence the regulation of apoptotic process involved in outflow tract morphogenesis. These findings highlight the potential for environmental and epigenetic factors to modulate the risk of outflow tract defects.
From regulation of apoptotic process involved in outflow tract morphogenesis-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of a candidate gene cause outflow tract apoptosis defects? | CRISPR knockout in mouse or zebrafish [2,4,6,7,8] |
| Does a specific point mutation in a signaling gene alter apoptotic regulation? | CRISPR point mutation knock-in [4,6] |
| Does overexpression of a pro-apoptotic gene induce outflow tract defects? | Transgenic overexpression or viral delivery |
| Where and when is a gene expressed during outflow tract development? | Tagged knock-in with reporter (e.g., GFP) [2,5] |
| Does epigenetic modification affect apoptotic gene expression? | DNA methylation editing or treatment with methylation inhibitors |
| Can a candidate gene rescue a knockout phenotype? | Knock-in of wild-type or mutant cDNA [6,7] |
How to Study the regulation of apoptotic process involved in outflow tract morphogenesis Process
| Method | What It Measures | Typical Application |
|---|---|---|
| TUNEL staining | Apoptotic DNA fragmentation | Detect apoptosis in embryonic outflow tract sections [1,8] |
| Activated caspase-3 immunostaining | Caspase-3 activation | Quantify apoptosis in mutant hearts |
| RNA sequencing | Transcriptome changes | Identify apoptotic gene expression changes in mutants [2,6] |
| DNA methylation profiling | Epigenetic modifications | Study congenital heart disease samples |
| Lineage tracing | Cell fate and migration | Track neural crest cells in outflow tract |
| Optical projection tomography | 3D morphology | Visualize outflow tract septation defects |
| In situ hybridization | mRNA localization | Detect gene expression patterns during development |
| Western blot | Protein expression and cleavage | Measure caspase activation and signaling |
Lineage tracing and apoptosis assays
Lineage tracing using Cre-lox or fluorescent reporters can identify which cell populations undergo apoptosis during outflow tract morphogenesis [1,4]. TUNEL staining and activated caspase-3 immunostaining are standard methods to detect apoptotic cells in embryonic heart sections [1,8]. These methods help localize apoptosis in the outflow tract and quantify changes in knockout or overexpression models.
Transcriptomic and epigenomic profiling
RNA sequencing of microdissected outflow tract tissue can reveal changes in apoptotic gene expression in mutant versus wild-type embryos [2,6]. DNA methylation profiling, such as bisulfite sequencing or methylation arrays, can identify epigenetic alterations in congenital heart disease samples. These approaches provide unbiased insights into regulatory networks controlling apoptosis in the outflow tract [3,6].
Imaging and morphological analysis
Optical projection tomography, micro-CT, and confocal imaging can visualize outflow tract morphology and septation defects in mutant embryos [1,4]. Three-dimensional reconstruction allows precise quantification of outflow tract anomalies. Live imaging in zebrafish or mouse embryos can track neural crest cell migration and apoptosis in real time.
Genetic and pharmacological perturbation
Conditional knockout, knock-in, and overexpression models in mice or zebrafish are used to test gene function in outflow tract apoptosis [2,6,7,8]. Pharmacological inhibitors or activators of BMP, Fas, or Cdc42 signaling can acutely modulate apoptotic regulation [4,5,8]. These perturbation studies establish causality between specific genes and GO:1902256 [6,8].
How CRISPR Can Be Used to Study GO:1902256 regulation of apoptotic process involved in outflow tract morphogenesis
Knockout
CRISPR knockout of candidate genes such as Smad4, YY1, or Cdc42 in mouse or zebrafish models can test their requirement for regulation of apoptotic process involved in outflow tract morphogenesis [2,4,6]. Knockout embryos can be analyzed for apoptosis, outflow tract morphology, and neural crest cell behavior. Conditional knockout using Cre-lox allows tissue-specific deletion to avoid early lethality.
Point Mutation
CRISPR point mutation knock-in can introduce specific amino acid changes in genes like Cdc42 or Smad4 to dissect domain-specific functions in apoptotic regulation [4,6]. These models help determine whether specific signaling activities are required for outflow tract morphogenesis. Point mutations can also model human variants associated with congenital heart disease.
Knock-in
CRISPR knock-in of reporter tags (e.g., GFP, lacZ) or epitope tags into endogenous loci enables visualization of gene expression and protein localization during outflow tract development [2,5]. Knock-in of wild-type or mutant cDNA can rescue knockout phenotypes and test sufficiency [6,7]. This approach is valuable for studying genes with complex regulatory elements.
Overexpression
CRISPR activation (CRISPRa) or transgenic overexpression can elevate expression of pro-apoptotic genes such as FasL to induce apoptosis and outflow tract defects. Overexpression models can also test whether increased dosage of a survival factor protects against apoptosis. These models complement knockout studies to establish gain-of-function effects.
How EDITGENE Supports regulation of apoptotic process involved in outflow tract morphogenesis Research
Researchers studying regulation of apoptotic process involved in outflow tract morphogenesis-related genes often need to determine whether a candidate gene is causally involved in apoptotic regulation, neural crest cell survival, or outflow tract remodeling. EDITGENE provides a comprehensive suite of CRISPR-based services to generate precisely engineered cell and animal models, enabling functional validation of genes implicated in GO:1902256.
Contact EDITGENE today to design your custom CRISPR model for regulation of apoptotic process involved in outflow tract morphogenesis research.
Frequently Asked Questions About regulation of apoptotic process involved in outflow tract morphogenesis
What is GO:1902256?
GO:1902256 is a Gene Ontology biological process term defined as any process that modulates the frequency, rate or extent of apoptotic process involved in outflow tract morphogenesis.
What does regulation of apoptotic process involved in outflow tract morphogenesis mean?
It refers to the control of programmed cell death specifically during the development of the cardiac outflow tract, the structure that connects the heart to the aortic and pulmonary arteries.
What genes are involved in regulation of apoptotic process involved in outflow tract morphogenesis?
Key genes include BMP2, BMP4, Smad4, FasL, Fas, YY1, Cdc42, and FAK, based on experimental studies in cardiovascular development [2,4,5,6,7,8].
Why is apoptosis important in outflow tract morphogenesis?
Apoptosis is a normal developmental process that helps remodel the outflow tract into separate aortic and pulmonary vessels; its dysregulation can cause congenital heart defects [1,8].
How is apoptosis regulated during outflow tract development?
It is regulated by signaling pathways such as BMP/Smad, Fas/FasL, and transcription factors like YY1, as well as cytoskeletal regulators like Cdc42 and FAK [2,4,5,6,7,8].
What diseases are associated with defects in outflow tract apoptosis?
Congenital heart defects, including outflow tract malformations such as persistent truncus arteriosus and tetralogy of Fallot, have been linked to dysregulated apoptosis [1,8].
Can CRISPR be used to study GO:1902256?
Yes, CRISPR knockout, knock-in, point mutation, and overexpression models can be used to test gene function in outflow tract apoptosis [2,4,6,7,8].
What model organisms are used to study outflow tract apoptosis?
Mouse and zebrafish are commonly used, along with cell culture models of neural crest and endocardial cells [2,4,6,7,8].
How do BMP signals regulate apoptosis in the outflow tract?
BMP2 and BMP4 signal through Smad4 to influence cell survival and apoptosis in endocardial cushions and neural crest cells during outflow tract development [5,6].
What is the role of Fas/FasL in outflow tract morphogenesis?
FasL binding to Fas can induce apoptosis in the embryonic heart; experimental FasL gene transfer causes programmed cell death and outflow tract defects.
Conclusion
GO:1902256, regulation of apoptotic process involved in outflow tract morphogenesis, represents a critical intersection of developmental apoptosis and cardiovascular morphogenesis. The term encompasses the signaling pathways, transcription factors, and epigenetic mechanisms that control when and where apoptosis occurs during outflow tract formation [1,2,3,4,5,6,7,8]. Dysregulation of this process is linked to congenital heart defects, making it a compelling area for both basic and translational research [1,8]. By leveraging CRISPR-based models and advanced profiling methods, researchers can dissect the causal roles of specific genes in this process. EDITGENE offers comprehensive services to support such studies, from knockout and knock-in models to library screening and bioinformatics, accelerating discoveries in cardiovascular development and disease.
References
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- 3. Serra-Juhé C et al.. 2015. DNA methylation abnormalities in congenital heart disease.. Epigenetics 10(2):167-77 PMID: 25587870
- 4. Fritz KR et al.. 2019. Cdc42 activation by endothelin regulates neural crest cell migration in the cardiac outflow tract.. Dev Dyn 248(9):795-812 PMID: 31219639
- 5. Keyes WM et al.. 2003. Expression and function of bone morphogenetic proteins in the development of the embryonic endocardial cushions.. Anat Embryol (Berl) 207(2):135-47 PMID: 12905017
- 6. Ko SO et al.. 2007. Smad4 is required to regulate the fate of cranial neural crest cells.. Dev Biol 312(1):435-47 PMID: 17964566
- 7. Cheng Z et al.. 2011. Focal adhesion kinase regulates smooth muscle cell recruitment to the developing vasculature.. Arterioscler Thromb Vasc Biol 31(10):2193-202 PMID: 21757658
- 8. Sallee D et al.. 2004. Fas ligand gene transfer to the embryonic heart induces programmed cell death and outflow tract defects.. Dev Biol 267(2):309-19 PMID: 15013796
