GO:0046425 regulation of receptor signaling pathway via JAK-STAT: Signaling Control, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0046425 describes any process that modulates the frequency, rate or extent of receptor signaling via the JAK-STAT pathway, a central cytokine-to-nucleus communication axis.
• The pathway is activated when cytokines bind receptors, leading to JAK kinase activation, STAT phosphorylation, dimerization, and nuclear import of STAT dimers.
• Regulation occurs at multiple levels, including SOCS proteins, phosphatases, and receptor trafficking, which together tune signal strength and duration.
• Dysregulated JAK-STAT regulation is implicated in myelofibrosis, inflammatory bowel disease, renal injury, and viral immune evasion.
• CRISPR knockout, point-mutation, knock-in, and overexpression models are essential to dissect causal roles of JAK-STAT regulators.
• EDITGENE provides end-to-end CRISPR cell model and library screening services to study GO:0046425-related genes.
Description
The JAK-STAT pathway is a fast-track signaling system that transmits information from extracellular cytokines directly to the nucleus, controlling gene expression programs involved in immunity, hematopoiesis, and tissue homeostasis. GO:0046425, regulation of receptor signaling pathway via JAK-STAT, encompasses all molecular events that adjust the intensity, duration, and specificity of this signaling cascade. Because subtle changes in JAK-STAT regulation can shift cellular outcomes from protective to pathological, understanding these control mechanisms is critical for both basic biology and therapeutic development. This article integrates the QuickGO definition with verified PubMed literature to provide a research-grade overview of the term, its key genes, disease links, and experimental strategies.
regulation of receptor signaling pathway via JAK-STAT At A Glance
| GO ID | GO:0046425 |
|---|---|
| GO term | regulation of receptor signaling pathway via JAK-STAT |
| Ontology | biological_process |
| Synonym | regulation of STAT protein import into nucleus; regulation of STAT protein nuclear translocation; STAT protein import into nucleus |
| Major function | Modulates the frequency, rate or extent of receptor signaling via JAK-STAT, affecting cytokine responses, immune regulation, and cell fate. |
| Key regulators | SOCS proteins, phosphatases (e.g., SHP-1, SHP-2), receptor trafficking components, and viral inhibitors. |
| Disease relevance | Myelofibrosis, inflammatory bowel disease, renal injury, and viral immune evasion. |
| Research methods | CRISPR KO/point mutation/knock-in/overexpression, RNA-seq, proteomics, imaging. |
What Is GO:0046425?
GO:0046425 is defined by QuickGO as any process that modulates the frequency, rate or extent of receptor signaling via JAK-STAT. In practice, this includes mechanisms that enhance or suppress the canonical cascade from cytokine binding to STAT nuclear import, such as receptor availability, JAK activity, STAT phosphorylation/dephosphorylation, and nuclear translocation of STAT dimers.
Why Is regulation of receptor signaling pathway via JAK-STAT Important in Cell Biology?
Regulation of JAK-STAT signaling is essential for maintaining balanced immune responses and tissue homeostasis. When this regulation fails, uncontrolled cytokine signaling can drive chronic inflammation, fibrosis, and cancer. Moreover, pathogens such as African swine fever virus target this regulatory layer to evade host immunity. Thus, understanding GO:0046425 is fundamental for developing targeted therapies and for interpreting disease-associated variants.
• Controls cytokine-driven gene expression programs in immunity and hematopoiesis.
• Dysregulation is linked to myelofibrosis and other myeloproliferative neoplasms.
• Modulates inflammatory bowel disease severity via macrophage polarization.
• Affects renal injury outcomes through macrophage apoptosis and polarization.
• Viral pathogens inhibit JAK-STAT regulation to evade interferon responses.
• SOCS proteins provide negative feedback critical for preventing excessive signaling.
• Therapeutic targeting of JAK kinases is clinically validated in myelofibrosis.
• CRISPR screens can identify novel regulators within this pathway.
What Happens During regulation of receptor signaling pathway via JAK-STAT?
Cytokine binding and receptor activation
In simple terms: A cytokine molecule docks onto its receptor on the cell surface, switching the receptor on.
Cytokines such as interleukin-6 (IL-6) bind to specific cell-surface receptors, inducing receptor dimerization or conformational changes that bring JAK kinases into close proximity. This activation step is the first point of regulation, as receptor availability and affinity can be modulated by soluble decoy receptors or receptor shedding.
JAK kinase activation and STAT phosphorylation
In simple terms: JAK enzymes add phosphate tags to STAT proteins, which then pair up.
Activated JAKs phosphorylate tyrosine residues on the receptor cytoplasmic tails, creating docking sites for STAT proteins. STATs are then phosphorylated by JAKs, leading to their dimerization via SH2-phosphotyrosine interactions. This step is tightly regulated by phosphatases such as SHP-1 and by SOCS proteins that bind JAKs or receptors to terminate signaling.
STAT nuclear import and DNA binding
In simple terms: The paired STAT proteins travel into the nucleus and turn genes on or off.
Phosphorylated STAT dimers translocate to the nucleus through nuclear pore complexes, a process that can be regulated by importins and by STAT modifications. Inside the nucleus, STAT dimers bind to specific DNA sequences in target gene promoters, activating transcription of genes involved in proliferation, differentiation, and immune responses.
Negative feedback and signal termination
In simple terms: Brakes are applied to stop the signal after it has done its job.
SOCS family proteins are induced by STAT signaling and act in a negative feedback loop by inhibiting JAK activity or promoting receptor degradation. Additionally, protein tyrosine phosphatases dephosphorylate JAKs and STATs, and nuclear STATs are exported or degraded, ensuring transient signaling. Dysregulation of these brakes can lead to persistent JAK-STAT activation, as seen in myelofibrosis.
Pathogen interference with JAK-STAT regulation
In simple terms: Some viruses cut the communication line to avoid immune attack.
Viruses have evolved proteins that target JAK-STAT regulatory components. For example, African swine fever virus p22 promotes degradation of the type I interferon receptor via TAX1BP1, thereby inhibiting JAK-STAT signaling and immune evasion. This highlights the importance of regulation in host-pathogen interactions.
Key Genes Involved in GO:0046425 regulation of receptor signaling pathway via JAK-STAT
The following genes and proteins are central to the regulation of receptor signaling via JAK-STAT, as supported by the verified literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| JAK1 | Tyrosine kinase that phosphorylates STATs upon cytokine receptor activation | Target for inflammatory and autoimmune diseases |
| JAK2 | Kinase essential for erythropoietin and thrombopoietin signaling; mutated in myeloproliferative neoplasms | Therapeutic target in myelofibrosis |
| JAK3 | Kinase primarily in immune cells; mediates common gamma chain cytokine signaling | Target for immunosuppression |
| TYK2 | Kinase involved in type I interferon and IL-12/23 signaling | Target for psoriasis and lupus |
| STAT1 | Transcription factor mediating interferon responses | Host defense and autoimmunity |
| STAT3 | Transcription factor driving proliferation, survival, and inflammation | Oncogene and inflammation target |
| STAT5A | Mediates prolactin and growth hormone signaling | Hematopoiesis and breast cancer |
| STAT5B | Mediates growth hormone and cytokine signaling | Growth disorders and leukemia |
| SOCS1 | Negative feedback inhibitor of JAK-STAT signaling | Tumor suppressor and inflammation regulator |
| SOCS3 | Inhibits JAK-STAT, particularly IL-6 signaling | Metabolic and inflammatory diseases |
| PTPN6 (SHP-1) | Phosphatase that dephosphorylates JAKs and receptors | Regulator of immune cell signaling |
| PTPN11 (SHP-2) | Phosphatase that can both promote and inhibit JAK-STAT signaling | Mutations in Noonan syndrome and leukemia |
| CUL5 | Cullin-RING ligase component that modulates JAK-STAT signaling | CAR T cell effector function |
| TREM2 | Receptor that influences macrophage JAK-STAT signaling | Renal injury and macrophage polarization |
| IL6 | Cytokine that activates JAK-STAT; masterplayer in inflammation | Inflammatory diseases and cytokine storm |
| IFNAR1 | Type I interferon receptor subunit; target of viral degradation | Antiviral immunity |
| TAX1BP1 | Adaptor protein involved in receptor degradation | Viral immune evasion mechanisms |
How Is regulation of receptor signaling pathway via JAK-STAT Regulated?
The JAK-STAT pathway is regulated by multiple mechanisms, including SOCS-mediated negative feedback, phosphatase activity, and receptor internalization. Additionally, cullin-RING ligases such as CUL5 can modulate JAK-STAT signaling by targeting components for degradation. Viral proteins can also interfere with regulation, as seen with African swine fever virus p22 promoting TAX1BP1-mediated degradation of IFNAR1. These layers ensure appropriate signal strength and duration.
regulation of receptor signaling pathway via JAK-STAT and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| JAK2 | Myelofibrosis | Knock-in of JAK2 V617F in hematopoietic stem cells |
| TREM2 | Renal injury | TREM2 knockout mice |
| SOCS3 | Inflammatory bowel disease | Intestinal epithelial cell-specific knockout |
| IFNAR1 | Viral immune evasion | Knockout or knockdown in porcine cells |
| CUL5 | CAR T cell therapy | CRISPR knockout in primary T cells |
Myelofibrosis and myeloproliferative neoplasms
Constitutive activation of JAK-STAT signaling, often due to JAK2 mutations, drives myelofibrosis. Targeted therapies like ruxolitinib inhibit JAK kinases and are standard treatments, underscoring the importance of regulation in disease.
Inflammatory bowel disease
Huanglian-Houpo extract attenuates DSS-induced ulcerative colitis in mice by protecting the intestinal mucosal barrier and regulating macrophage polarization, a process involving JAK-STAT signaling. This highlights the role of JAK-STAT regulation in intestinal inflammation.
Renal injury
TREM2 deficiency aggravates renal injury by promoting macrophage apoptosis and polarization via the JAK-STAT pathway in mice, linking JAK-STAT regulation to kidney disease progression.
Viral immune evasion
African swine fever virus p22 inhibits JAK-STAT signaling by promoting TAX1BP1-mediated degradation of the type I interferon receptor, demonstrating how pathogens target this regulatory pathway to evade immunity.
From regulation of receptor signaling pathway via JAK-STAT-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does a candidate gene regulate JAK-STAT signaling? | CRISPR knockout cell line |
| Does a specific point mutation alter JAK-STAT regulation? | Point-mutation knock-in via CRISPR |
| How does a tagged regulator localize during signaling? | Knock-in of fluorescent or epitope tag |
| Does overexpression of a regulator enhance or suppress signaling? | Overexpression cell line |
| Which genes are essential for JAK-STAT regulation? | Genome-wide CRISPR library screening |
| How does a viral protein inhibit JAK-STAT? | Overexpression of viral protein in host cells |
How to Study the regulation of receptor signaling pathway via JAK-STAT Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Western blot | Phospho-STAT levels | Assess JAK-STAT activation |
| RNA-seq | Transcriptional changes | Identify downstream targets |
| Proteomics | Protein interactions | Discover regulators |
| Immunofluorescence | STAT nuclear localization | Quantify translocation |
| CRISPR screen | Gene essentiality | Identify novel regulators |
| Flow cytometry | STAT phosphorylation | Single-cell analysis |
| Luciferase reporter | STAT transcriptional activity | High-throughput screening |
CRISPR knockout and point mutation
CRISPR-Cas9 knockout of candidate regulators followed by cytokine stimulation and phospho-STAT Western blotting can determine if a gene is required for JAK-STAT regulation. Point mutations can dissect specific phosphorylation sites or interaction domains.
Transcriptomic and proteomic profiling
RNA-seq after cytokine stimulation reveals downstream gene expression changes, while proteomics can identify interaction partners of JAK-STAT regulators. These methods help map the regulatory network.
Imaging of STAT nuclear translocation
Fluorescently tagged STAT proteins can be imaged to quantify nuclear import, a key regulatory step. High-content imaging allows screening for modulators of this process.
Library screening and bioinformatics
Genome-wide CRISPR screens coupled with cytokine-dependent survival or reporter assays can identify novel regulators of JAK-STAT signaling. Bioinformatics analysis of screen hits reveals enriched pathways and networks.
How CRISPR Can Be Used to Study GO:0046425 regulation of receptor signaling pathway via JAK-STAT
Knockout
CRISPR knockout of JAK-STAT regulators such as SOCS3 or CUL5 can reveal their role in modulating signaling intensity and duration. Knockout cell models are essential for loss-of-function studies.
Point Mutation
Introducing point mutations in JAK2 (e.g., V617F) or STAT3 phosphorylation sites via CRISPR allows precise dissection of regulatory mechanisms and disease-associated variants.
Knock-in
Knock-in of fluorescent tags (e.g., GFP-STAT1) enables real-time imaging of STAT nuclear translocation, a key regulatory event.
Overexpression
Overexpression of viral inhibitors like ASFV p22 or host regulators can test their ability to suppress JAK-STAT signaling and identify dominant-negative effects.
How EDITGENE Supports regulation of receptor signaling pathway via JAK-STAT Research
Researchers studying regulation of receptor signaling pathway via JAK-STAT-related genes often need to determine whether a candidate gene is causally involved in modulating cytokine responses. EDITGENE provides comprehensive CRISPR services to generate precisely engineered cell models for such investigations.
Contact EDITGENE today to design your custom CRISPR model for regulation of receptor signaling pathway via JAK-STAT research.
Frequently Asked Questions About regulation of receptor signaling pathway via JAK-STAT
What is GO:0046425?
GO:0046425 is a Gene Ontology term for any process that modulates the frequency, rate or extent of receptor signaling via JAK-STAT.
What genes are involved in regulation of receptor signaling pathway via JAK-STAT?
Key genes include JAK1, JAK2, JAK3, TYK2, STAT1, STAT3, STAT5A, STAT5B, SOCS1, SOCS3, PTPN6, PTPN11, CUL5, and TREM2.
How is JAK-STAT signaling regulated?
It is regulated by SOCS proteins, phosphatases, receptor trafficking, and viral inhibitors that target pathway components.
What diseases are linked to JAK-STAT dysregulation?
Myelofibrosis, inflammatory bowel disease, renal injury, and viral immune evasion are associated with altered JAK-STAT regulation.
What is the role of STAT nuclear import in GO:0046425?
STAT nuclear import is a key regulatory step; its modulation affects the transcriptional output of JAK-STAT signaling.
How can CRISPR help study JAK-STAT regulation?
CRISPR knockout, point mutation, knock-in, and overexpression models allow precise manipulation of regulators to test causality.
What is the JAK2 V617F mutation?
JAK2 V617F is a point mutation that causes constitutive JAK-STAT activation and is common in myelofibrosis.
How do viruses inhibit JAK-STAT signaling?
Viruses such as African swine fever virus express proteins like p22 that promote degradation of interferon receptors, inhibiting JAK-STAT signaling.
What methods are used to study JAK-STAT regulation?
Western blot, RNA-seq, proteomics, imaging, and CRISPR screens are commonly used.
What services does EDITGENE offer for JAK-STAT research?
EDITGENE provides knockout, point mutation, knock-in, overexpression cell models, CRISPR library screening, and bioinformatics services.
Conclusion
GO:0046425, regulation of receptor signaling pathway via JAK-STAT, is a critical biological process that ensures appropriate cellular responses to cytokines. Its dysregulation underlies numerous diseases, from myelofibrosis to inflammatory bowel disease and viral immune evasion. By leveraging CRISPR-based models and advanced screening, researchers can uncover new regulatory mechanisms and therapeutic targets. EDITGENE stands ready to support these efforts with tailored cell model and screening services.
References
- 1. Morris R et al.. 2018. The molecular details of cytokine signaling via the JAK/STAT pathway.. Protein Sci 27(12):1984-2009 PMID: 30267440
- 2. Cui Y et al.. 2024. TREM2 deficiency aggravates renal injury by promoting macrophage apoptosis and polarization via the JAK-STAT pathway in mice.. Cell Death Dis 15(6):401 PMID: 38849370
- 3. Uciechowski P et al.. 2020. Interleukin-6: A Masterplayer in the Cytokine Network.. Oncology 98(3):131-137 PMID: 31958792
- 4. Heinrich PC et al.. 2003. Principles of interleukin (IL)-6-type cytokine signalling and its regulation.. Biochem J 374(Pt 1):1-20 PMID: 12773095
- 5. Adachi Y et al.. 2024. Cullin-5 deficiency promotes chimeric antigen receptor T cell effector functions potentially via the modulation of JAK/STAT signaling pathway.. Nat Commun 15(1):10376 PMID: 39658572
- 6. Loscocco GG et al.. 2025. Targeted Therapies in Myelofibrosis: Present Landscape, Ongoing Studies, and Future Perspectives.. Am J Hematol 100 Suppl 4(Suppl 4):30-50 PMID: 40062529
- 7. Cheng W et al.. 2023. Huanglian-Houpo extract attenuates DSS-induced UC mice by protecting intestinal mucosal barrier and regulating macrophage polarization.. J Ethnopharmacol 307:116181 PMID: 36738944
- 8. Ren H et al.. 2025. The African swine fever virus p22 inhibits the JAK-STAT signaling pathway by promoting the TAX1BP1-mediated degradation of the type I interferon receptor.. PLoS Pathog 21(7):e1013319 PMID: 40668839
