GO:0035607 fibroblast growth factor receptor signaling pathway involved in orbitofrontal cortex development: Mechanism, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0035607 describes the fibroblast growth factor receptor (FGFR) signaling cascade that specifically drives the development of the orbitofrontal cortex (OFC), a prefrontal region critical for decision-making and social behavior.
• This term is a biological process that integrates ligand binding, receptor activation, and downstream intracellular signaling to shape OFC formation and maturation.
• Key genes include FGF ligands (e.g., FGF8, FGF17), FGFRs (e.g., FGFR1, FGFR2, FGFR3), and downstream effectors such as MAPK/ERK and PI3K/AKT pathways.
• Dysregulation of this pathway is implicated in neurodevelopmental disorders, including autism spectrum disorder and schizophrenia, as well as in certain cancers.
• Research tools such as CRISPR knockout, knock-in, and overexpression models, combined with RNA-seq and proteomics, are essential to dissect this pathway's role in OFC development.
• EDITGENE provides comprehensive CRISPR services to study GO:0035607, from gene editing to functional screening and bioinformatics analysis.
Description
The orbitofrontal cortex (OFC) is a key region of the prefrontal cortex involved in higher-order cognitive functions, including reward processing, decision-making, and emotional regulation. Its development is tightly controlled by a network of signaling pathways, among which fibroblast growth factor (FGF) signaling plays a pivotal role. The Gene Ontology (GO) term GO:0035607, 'fibroblast growth factor receptor signaling pathway involved in orbitofrontal cortex development', captures the specific molecular events by which FGF receptors transduce signals to guide OFC formation and maturation. Understanding this pathway is crucial for researchers studying neurodevelopment and related disorders. Disruptions in FGF signaling have been linked to abnormal cortical development and neuropsychiatric conditions. This article provides a comprehensive overview of GO:0035607, including its definition, key genes, regulatory mechanisms, disease associations, and experimental approaches for investigation.
fibroblast growth factor receptor signaling pathway involved in orbitofrontal cortex development At A Glance
| GO ID | GO:0035607 |
|---|---|
| GO term | fibroblast growth factor receptor signaling pathway involved in orbitofrontal cortex development |
| Ontology | biological_process |
| Synonym | FGF receptor signaling pathway involved in orbitofrontal cortex development; FGFR signaling pathway involved in orbitofrontal cortex development; fibroblast growth factor receptor signalling pathway involved in orbitofrontal cortex development |
| Major function | Transduces FGF signals to regulate proliferation, differentiation, and migration of neural progenitors during OFC development |
| Related pathways | MAPK/ERK, PI3K/AKT, PLCγ |
| Key ligands | FGF8, FGF17, FGF18 |
| Key receptors | FGFR1, FGFR2, FGFR3 |
What Is GO:0035607?
GO:0035607 is defined as the series of molecular signals generated as a consequence of a fibroblast growth factor-type receptor binding to one of its physiological ligands, which contributes to the progression of the orbitofrontal cortex over time from its initial formation until its mature state. In simpler terms, it is the specific FGF receptor signaling cascade that orchestrates the development of the orbitofrontal cortex.
Why Is fibroblast growth factor receptor signaling pathway involved in orbitofrontal cortex development Important in Cell Biology?
GO:0035607 is important because it defines a critical signaling axis that shapes the orbitofrontal cortex, a brain region essential for executive function and social cognition. Aberrations in this pathway can lead to neurodevelopmental disorders such as autism spectrum disorder and schizophrenia, and may also contribute to tumorigenesis when misregulated. Studying this process provides insights into normal brain development and offers potential therapeutic targets for related diseases.
• Critical for proper formation and maturation of the orbitofrontal cortex, influencing cognitive and emotional behaviors.
• Dysregulation is associated with neurodevelopmental disorders including autism spectrum disorder and schizophrenia.
• FGF signaling components are often mutated or overexpressed in cancers, linking developmental pathways to oncogenesis.
• Provides a model for understanding how extracellular signals are translated into region-specific brain development.
• Offers targets for pharmacological intervention in neuropsychiatric and oncological conditions.
• Essential for interpreting results from genome-wide association studies that implicate FGF pathway genes in brain disorders.
• Helps explain the evolutionary expansion of the prefrontal cortex in primates.
• Guides stem cell differentiation protocols for generating OFC-like neurons in vitro.
What Happens During fibroblast growth factor receptor signaling pathway involved in orbitofrontal cortex development?
Ligand Binding and Receptor Activation
In simple terms: FGF molecules dock onto FGFRs on the cell surface, causing the receptors to pair up and activate.
The pathway begins when fibroblast growth factors (FGFs), such as FGF8 and FGF17, bind to fibroblast growth factor receptors (FGFRs) on neural progenitor cells in the developing OFC. This binding induces receptor dimerization and autophosphorylation of tyrosine residues in the intracellular domain, creating docking sites for downstream signaling proteins.
Intracellular Signal Transduction
In simple terms: Activated receptors trigger a relay of proteins inside the cell that carry the signal to the nucleus.
Phosphorylated FGFRs recruit adaptor proteins like FRS2 and GRB2, leading to activation of the RAS-MAPK/ERK and PI3K-AKT pathways. These cascades transmit signals to the nucleus, where they regulate transcription factors that control genes involved in cell proliferation, differentiation, and survival.
Regulation of Neural Progenitor Behavior
In simple terms: The signal tells neural stem cells to divide, migrate, or become specific types of brain cells.
FGF signaling in the OFC influences the balance between progenitor self-renewal and differentiation. It promotes the generation of excitatory neurons and regulates their migration to appropriate cortical layers, thereby shaping the OFC's cytoarchitecture.
Feedback and Termination
In simple terms: The cell has built-in brakes to shut off the signal once it has done its job.
Negative feedback mechanisms, including the induction of Sprouty proteins and MAPK phosphatases, attenuate FGFR signaling. Proper termination is essential to prevent excessive proliferation and ensure timely differentiation during OFC development.
Key Genes Involved in GO:0035607 fibroblast growth factor receptor signaling pathway involved in orbitofrontal cortex development
The following genes encode the ligands, receptors, and downstream effectors that constitute the fibroblast growth factor receptor signaling pathway involved in orbitofrontal cortex development.
| Gene | Major Role | Research Relevance |
|---|---|---|
| FGF8 | Ligand; critical for patterning the anterior neural plate and OFC development | Knockout leads to severe cortical defects; studied in neurodevelopmental disorders |
| FGF17 | Ligand; involved in prefrontal cortex development | Associated with social behavior and cognitive function |
| FGF18 | Ligand; regulates progenitor proliferation | Implicated in cortical neurogenesis |
| FGFR1 | Receptor; mediates FGF signaling in neural progenitors | Mutations linked to Kallmann syndrome and cancer |
| FGFR2 | Receptor; regulates differentiation and migration | Mutations cause craniosynostosis and contribute to cancer |
| FGFR3 | Receptor; modulates progenitor proliferation | Mutations associated with skeletal disorders and cancer |
| FRS2 | Adaptor protein; links FGFR to RAS-MAPK pathway | Essential for FGF signaling; knockout is embryonic lethal |
| GRB2 | Adaptor protein; recruits SOS to activate RAS | Central node in RTK signaling; studied in cancer |
| SOS1 | Guanine nucleotide exchange factor; activates RAS | Mutations found in Noonan syndrome and cancers |
| RAS | Small GTPase; activates RAF-MEK-ERK cascade | Oncogene; frequently mutated in cancer |
| RAF | Kinase; phosphorylates MEK | Target of cancer drugs; involved in neurodevelopment |
| MEK | Kinase; phosphorylates ERK | Key node in MAPK pathway; drug target |
| ERK | Kinase; translocates to nucleus to regulate transcription | Controls proliferation and differentiation |
| PI3K | Lipid kinase; generates PIP3 to activate AKT | Promotes survival and growth; often mutated in cancer |
| AKT | Kinase; regulates cell survival and metabolism | Oncogene; target of therapies |
| SPRY1 | Feedback inhibitor of FGF signaling | Modulates pathway strength; knockout causes overgrowth |
| SPRY2 | Feedback inhibitor; attenuates RAS-MAPK | Tumor suppressor in some contexts |
| DUSP6 | Phosphatase; inactivates ERK | Negative feedback regulator; biomarker in cancer |
How Is fibroblast growth factor receptor signaling pathway involved in orbitofrontal cortex development Regulated?
The fibroblast growth factor receptor signaling pathway involved in orbitofrontal cortex development is tightly regulated at multiple levels. Extracellularly, ligand availability is controlled by expression patterns and binding proteins. At the receptor level, endocytosis and degradation modulate signal duration. Intracellularly, negative feedback loops involving Sprouty proteins and MAPK phosphatases (e.g., DUSP6) attenuate the signal. Additionally, crosstalk with other pathways such as Wnt and BMP fine-tunes the output. Dysregulation of these regulatory mechanisms can lead to developmental abnormalities and disease.
fibroblast growth factor receptor signaling pathway involved in orbitofrontal cortex development and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| FGF17 | Autism spectrum disorder | Fgf17 knockout mouse; CRISPR KO in human iPSCs |
| FGFR2 | Craniosynostosis, cancer | Point mutation knock-in mice; cancer cell lines |
| FGFR3 | Achondroplasia, cancer | FGFR3 G380R knock-in mouse; overexpression in chondrocytes |
| FRS2 | Developmental defects, cancer | Conditional knockout mouse; RNAi in cancer cells |
| SPRY2 | Cancer, neurodevelopmental disorders | Spry2 knockout mouse; overexpression in neural progenitors |
Neurodevelopmental Disorders
Alterations in FGF signaling components have been associated with autism spectrum disorder (ASD) and schizophrenia. For example, mutations in FGF17 and FGFR2 have been linked to ASD, and disrupted ERK signaling is observed in schizophrenia models. The orbitofrontal cortex is a key region affected in these disorders, and proper FGF signaling is essential for its development.
Cancer
Dysregulated FGFR signaling is a hallmark of many cancers, including glioblastoma and lung cancer. Overexpression or activating mutations in FGFR1, FGFR2, or FGFR3 can drive tumor cell proliferation and survival. The same pathway that shapes the OFC during development can become oncogenic when constitutively active.
Skeletal and Craniofacial Disorders
Mutations in FGFR2 and FGFR3 cause craniosynostosis syndromes such as Apert and Crouzon syndromes. These mutations lead to enhanced FGFR signaling, affecting bone development. Although primarily skeletal, these disorders highlight the pleiotropic effects of FGF signaling.
From fibroblast growth factor receptor signaling pathway involved in orbitofrontal cortex development-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does FGF8 loss affect OFC development? | Fgf8 conditional knockout mouse |
| What is the effect of FGFR2 activating mutation on cortical neurogenesis? | FGFR2 point mutation knock-in mouse |
| Can we visualize FGFR1 expression in the developing OFC? | FGFR1-tagged knock-in reporter mouse |
| Does overexpression of FGF17 alter social behavior? | FGF17 overexpression transgenic mouse |
| Which genes are downstream of FGFR signaling in OFC progenitors? | RNA-seq after FGFR inhibitor treatment in vitro |
| Can CRISPR screen identify modifiers of FGF signaling? | Genome-wide CRISPR knockout library in neural stem cells |
How to Study the fibroblast growth factor receptor signaling pathway involved in orbitofrontal cortex development Process
| Method | What It Measures | Typical Application |
|---|---|---|
| RNA-seq | Global gene expression changes | Identify downstream targets of FGF signaling |
| Phosphoproteomics | Phosphorylation status of signaling proteins | Map activated pathways after FGF stimulation |
| ChIP-seq | Transcription factor binding sites | Locate ERK-dependent enhancers in OFC development |
| Immunofluorescence | Protein localization and cell morphology | Visualize FGFR expression in cortical layers |
| CRISPR knockout screen | Gene essentiality and pathway modifiers | Discover novel regulators of FGF signaling |
| Single-cell RNA-seq | Cell-type-specific expression profiles | Characterize progenitor heterogeneity in OFC |
| Behavioral assays | Cognitive and social behaviors | Assess functional consequences of pathway manipulation |
Transcriptomics and RNA-seq
RNA sequencing can profile gene expression changes following manipulation of FGF signaling components. This helps identify downstream targets and pathways that contribute to OFC development. For example, comparing wild-type and FGF8 knockout cortical progenitors reveals differentially expressed genes.
Proteomics and Phosphoproteomics
Mass spectrometry-based proteomics can quantify protein abundance and phosphorylation events downstream of FGFR activation. This is useful to map the signaling network and identify novel effectors in OFC development.
Imaging and Lineage Tracing
Fluorescent reporters and lineage tracing in mouse models allow visualization of FGF signaling dynamics and cell fate specification in the developing OFC. Techniques such as two-photon microscopy and light-sheet imaging provide spatial and temporal resolution.
CRISPR Screening
Pooled CRISPR knockout screens can systematically identify genes that modulate FGF signaling or OFC progenitor proliferation. This approach is powerful for discovering new regulators and potential therapeutic targets.
How CRISPR Can Be Used to Study GO:0035607 fibroblast growth factor receptor signaling pathway involved in orbitofrontal cortex development
Knockout
CRISPR knockout of FGF ligands or receptors in cell models or animal models can abolish signaling, revealing their necessity for OFC development. For example, Fgf8 knockout mice exhibit severe cortical defects, and CRISPR-mediated knockout in human iPSCs can model these effects in vitro.
Point Mutation
Introducing specific point mutations (e.g., FGFR2 S252W) via CRISPR can mimic human disease alleles. These models help study how activating mutations alter downstream signaling and OFC progenitor behavior.
Knock-in
Knock-in of reporter tags (e.g., GFP) or conditional alleles allows precise tracking of gene expression and function. For instance, knocking in a fluorescent reporter at the FGF8 locus enables visualization of ligand-producing cells in the developing OFC.
Overexpression
CRISPR activation (CRISPRa) or transgenic overexpression can elevate FGF signaling to study gain-of-function effects. Overexpressing FGF17 in mice leads to altered social behavior, linking pathway activity to cognitive phenotypes.
How EDITGENE Supports fibroblast growth factor receptor signaling pathway involved in orbitofrontal cortex development Research
Researchers studying fibroblast growth factor receptor signaling pathway involved in orbitofrontal cortex development-related genes often need to determine whether a candidate gene is causally involved in the pathway or merely correlated. EDITGENE provides a comprehensive suite of CRISPR-based services to enable such functional studies with high precision and reproducibility.
Contact EDITGENE today to design your custom CRISPR model for fibroblast growth factor receptor signaling pathway involved in orbitofrontal cortex development research.
Frequently Asked Questions About fibroblast growth factor receptor signaling pathway involved in orbitofrontal cortex development
What is GO:0035607?
GO:0035607 is a Gene Ontology term for the fibroblast growth factor receptor signaling pathway involved in orbitofrontal cortex development. It describes the molecular signals from FGFR activation that guide the formation and maturation of the orbitofrontal cortex.
What genes are involved in fibroblast growth factor receptor signaling pathway involved in orbitofrontal cortex development?
Key genes include FGF8, FGF17, FGF18, FGFR1, FGFR2, FGFR3, FRS2, GRB2, SOS1, RAS, RAF, MEK, ERK, PI3K, AKT, SPRY1, SPRY2, and DUSP6.
How does FGF signaling affect orbitofrontal cortex development?
FGF signaling regulates proliferation, differentiation, and migration of neural progenitors in the OFC. It shapes the cytoarchitecture and ensures proper cognitive functions.
What diseases are associated with dysregulation of this pathway?
Dysregulation is linked to neurodevelopmental disorders such as autism spectrum disorder and schizophrenia, as well as cancers and craniosynostosis syndromes.
What model systems are used to study GO:0035607?
Common models include knockout and transgenic mice, human iPSC-derived neural progenitors, and CRISPR-edited cell lines. Techniques like RNA-seq, proteomics, and imaging are used.
How can CRISPR help study this pathway?
CRISPR allows precise knockout, knock-in, point mutation, and overexpression of FGF pathway genes, enabling functional dissection of their roles in OFC development.
What are the downstream effectors of FGFR signaling in OFC development?
Major downstream effectors include the RAS-MAPK/ERK and PI3K-AKT pathways, which regulate transcription factors controlling neurogenesis.
Is FGF signaling involved in cancer?
Yes, aberrant FGFR signaling is oncogenic in many cancers, including glioblastoma and lung cancer, making it a therapeutic target.
What is the role of FGF8 in orbitofrontal cortex development?
FGF8 is a critical ligand that patterns the anterior neural plate and is essential for OFC formation; its loss leads to severe cortical defects.
How does EDITGENE support research on GO:0035607?
EDITGENE offers CRISPR knockout, knock-in, point mutation, overexpression, library screening, and bioinformatics services to study FGF signaling in OFC development.
Conclusion
GO:0035607 represents a vital signaling pathway that orchestrates the development of the orbitofrontal cortex. Its components are critical for normal brain function, and their dysregulation contributes to neurodevelopmental disorders and cancer. Continued research using advanced CRISPR models and multi-omics approaches will deepen our understanding of this pathway and may lead to novel therapeutic strategies. EDITGENE is committed to providing the tools and services needed to accelerate these discoveries.
References
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