GO:0002765 immune response-inhibiting signal transduction: Mechanism, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0002765 describes the signal transduction cascade that ultimately inhibits an immune response, often by dampening inflammatory or antiviral signaling.
• Key molecular players include NF-kB, STAT1, and SOCS proteins, which are targeted by pathogens and therapeutic agents to suppress immune activation.
• Dysregulation of this process contributes to chronic inflammation, autoimmune diseases, and cancer progression.
• Natural compounds such as berberine and traditional Chinese medicine formulas modulate this pathway to treat inflammatory conditions.
• CRISPR-based models (knockout, knock-in, overexpression) are essential to dissect the causal roles of genes in immune response-inhibiting signal transduction.
• Understanding this GO term aids in developing therapies for rheumatoid arthritis, acute liver failure, and viral infections.
Description
Immune response-inhibiting signal transduction (GO:0002765) is a biological process that encompasses the signaling cascades leading to the suppression of immune responses. This process is critical for maintaining immune homeostasis and preventing excessive inflammation, but it is also exploited by pathogens and tumors to evade host immunity. Research into this term has revealed diverse molecular mechanisms, from cytokine signaling to pathogen-derived antagonists, highlighting its importance in health and disease. Understanding how signals are transduced to inhibit immune responses is essential for developing therapies for inflammatory diseases, autoimmune disorders, and infections.
immune response-inhibiting signal transduction At A Glance
| GO ID | GO:0002765 |
|---|---|
| GO term | immune response-inhibiting signal transduction |
| Ontology | biological_process |
| Synonym | none |
| Major function | Signal transduction leading to inhibition of immune responses |
| Related processes | NF-kB signaling, STAT signaling, cytokine signaling |
| Key regulators | SOCS proteins, berberine, Jiedu Huayu Granules |
| Disease relevance | Rheumatoid arthritis, acute liver failure, viral infections |
What Is GO:0002765?
GO:0002765, immune response-inhibiting signal transduction, is defined as the cascade of processes by which a signal interacts with a receptor, causing a change in the level or activity of a second messenger or other downstream target, and ultimately leading to inhibition of an immune response. In simpler terms, it is the series of molecular events that turn down immune activity.
Why Is immune response-inhibiting signal transduction Important in Cell Biology?
This process is fundamental to immune regulation, as it prevents autoimmunity and limits tissue damage during inflammation. However, pathogens and cancer cells often hijack these pathways to escape immune attack, making it a target for therapeutic intervention. Moreover, understanding immune response-inhibiting signal transduction can inform the development of treatments for chronic inflammatory diseases and improve vaccine efficacy.
• Maintains immune homeostasis by preventing excessive or prolonged immune activation.
• Dysregulation leads to autoimmune diseases such as rheumatoid arthritis.
• Pathogens like human cytomegalovirus exploit this pathway to evade host immunity.
• Therapeutic modulation by natural compounds (e.g., berberine) can treat inflammatory conditions.
• Involved in acute liver failure pathogenesis through NF-kB signaling.
• Target for traditional Chinese medicine in rheumatoid arthritis treatment.
• Potential role in tissue repair and regeneration, as suggested by tetrahedral DNA nanostructures.
• Provides insights into cancer immune evasion mechanisms.
• Guides development of CRISPR-based models to study gene function.
• Essential for understanding cytokine signaling and feedback inhibition.
What Happens During immune response-inhibiting signal transduction?
Receptor Engagement and Initial Signaling
In simple terms: A signal molecule binds to a receptor on the cell surface, starting a chain of events inside the cell.
The process begins when an extracellular signal, such as a cytokine or pathogen-derived molecule, binds to its receptor. This interaction triggers conformational changes and recruitment of intracellular signaling proteins. For example, berberine inhibits inflammation by modulating multiple signaling pathways, including NF-kB and MAPK, as shown by network pharmacology analysis. Similarly, human cytomegalovirus encodes antagonists that block type I IFN-dependent STAT signaling, thereby inhibiting antiviral immune responses.
Amplification and Second Messenger Generation
In simple terms: The initial signal is amplified through second messengers, which spread the message within the cell.
Following receptor activation, second messengers such as cyclic AMP, calcium ions, or reactive oxygen species are generated, amplifying the signal. These messengers activate downstream kinases and phosphatases. In the context of immune inhibition, this step often involves the activation of phosphatases like SHP-1 or the induction of SOCS proteins, which dampen cytokine signaling. The NF-kB pathway, a key mediator of inflammation, can be inhibited by compounds like those in Jiedu Huayu Granules, which reduce immune and inflammatory responses in acute liver failure.
Downstream Target Modulation
In simple terms: The signal alters the activity of target proteins, leading to changes in gene expression.
The cascade ultimately modifies the activity of transcription factors such as NF-kB and STATs. For instance, inhibition of NF-kB nuclear translocation reduces the expression of pro-inflammatory cytokines. In rheumatoid arthritis, traditional Chinese medicine components modulate signaling pathways including NF-kB, MAPK, and JAK-STAT, leading to suppressed immune responses. These changes in gene expression result in the inhibition of immune cell activation and proliferation.
Feedback and Termination
In simple terms: The cell has built-in brakes to stop the signal once the immune response is suppressed.
To prevent excessive inhibition, negative feedback loops are activated. SOCS proteins are induced by cytokines and act as feedback inhibitors of the JAK-STAT pathway. Additionally, phosphatases remove phosphate groups from signaling molecules, terminating the signal. Dysregulation of these feedback mechanisms can lead to chronic inflammation or immune evasion, as seen in viral infections where viral antagonists mimic or enhance these inhibitory signals.
Key Genes Involved in GO:0002765 immune response-inhibiting signal transduction
The following genes and proteins are key players in immune response-inhibiting signal transduction, based on published literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| NFKB1 | Transcription factor regulating inflammatory and immune responses | Target of berberine and Jiedu Huayu Granules to inhibit inflammation |
| STAT1 | Signal transducer and activator of transcription, mediates IFN responses | Antagonized by human cytomegalovirus to inhibit type I IFN signaling |
| SOCS1 | Suppressor of cytokine signaling, negative feedback regulator | Inhibits JAK-STAT pathway, dampening immune responses |
| SOCS3 | Suppressor of cytokine signaling, regulates inflammation | Modulates cytokine signaling in rheumatoid arthritis |
| MAPK1 | Mitogen-activated protein kinase, involved in inflammatory signaling | Modulated by berberine and traditional Chinese medicine |
| MAPK14 | p38 MAPK, stress-activated kinase | Involved in inflammatory responses, targeted by anti-inflammatory compounds |
| JAK2 | Janus kinase, mediates cytokine signaling | Inhibited by SOCS proteins, affecting immune suppression |
| TNF | Pro-inflammatory cytokine | Its signaling is inhibited by berberine and Jiedu Huayu Granules |
| IL6 | Cytokine involved in inflammation and immune regulation | Modulated by traditional Chinese medicine in rheumatoid arthritis |
| IL10 | Anti-inflammatory cytokine | Induces SOCS3, contributing to immune inhibition |
| TLR4 | Toll-like receptor, recognizes pathogens | Its signaling is inhibited by berberine |
| MYD88 | Adaptor protein in TLR signaling | Involved in NF-kB activation, targeted for inhibition |
| IRAK1 | Kinase in TLR signaling | Modulated by anti-inflammatory agents |
| TRAF6 | E3 ubiquitin ligase in NF-kB pathway | Key node in inflammatory signaling, inhibited by berberine |
| RELA | NF-kB subunit | Inhibited by Jiedu Huayu Granules to reduce inflammation |
| NFKBIA | IκBα, inhibitor of NF-kB | Stabilized by anti-inflammatory compounds to suppress NF-kB |
| PIK3CA | PI3K catalytic subunit | Involved in immune signaling, modulated by traditional Chinese medicine |
| AKT1 | Protein kinase B, downstream of PI3K | Regulates immune cell survival and inflammation |
How Is immune response-inhibiting signal transduction Regulated?
The process of immune response-inhibiting signal transduction is tightly regulated by various mechanisms. Negative feedback loops involving SOCS proteins are critical; for example, SOCS1 and SOCS3 are induced by cytokines and inhibit JAK-STAT signaling, thereby suppressing immune responses. Additionally, phosphatases such as SHP-1 dephosphorylate key signaling intermediates, terminating the signal. Pharmacological agents like berberine modulate this process by inhibiting NF-kB and MAPK pathways, as demonstrated in network pharmacology studies. Traditional Chinese medicine formulas, such as Jiedu Huayu Granules, regulate NF-kB signaling to inhibit immune and inflammatory responses in acute liver failure. In rheumatoid arthritis, multiple signaling pathways including NF-kB, MAPK, and PI3K-Akt are targeted by traditional Chinese medicine to modulate immune inhibition.
immune response-inhibiting signal transduction and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| NFKB1 | Rheumatoid arthritis, acute liver failure | Knockout mice or cell lines to study NF-kB inhibition |
| STAT1 | Viral infections (HCMV) | Knockout cells to assess IFN signaling inhibition |
| SOCS1 | Autoimmunity, inflammation | Overexpression or knockout models to study JAK-STAT regulation |
| TNF | Inflammatory diseases | Knock-in of human TNF for drug testing |
| IL10 | Inflammatory bowel disease | Knockout mice to study anti-inflammatory signaling |
Rheumatoid Arthritis
Rheumatoid arthritis is a chronic autoimmune disease characterized by persistent inflammation. Dysregulation of immune response-inhibiting signal transduction contributes to disease pathogenesis. Traditional Chinese medicine has been shown to modulate signaling pathways such as NF-kB, MAPK, and JAK-STAT to suppress immune responses and alleviate symptoms. Targeting these pathways with specific inhibitors or biologics represents a therapeutic strategy.
Acute Liver Failure
Acute liver failure involves massive inflammation and immune activation. Jiedu Huayu Granules inhibit immune and inflammatory responses in rats with acute liver failure by regulating the NF-kB signaling pathway. This suggests that enhancing immune response-inhibiting signal transduction can mitigate liver damage. Understanding the molecular mechanisms could lead to new treatments.
Viral Infections
Human cytomegalovirus encodes an antagonist of type I IFN-dependent STAT signaling, which inhibits antiviral immune responses and facilitates viral persistence. This highlights how pathogens exploit immune response-inhibiting signal transduction. Studying these viral strategies can inform the development of antiviral therapies that block immune evasion.
Inflammation and Tissue Repair
Berberine inhibits inflammation through multiple molecular mechanisms, including modulation of NF-kB and MAPK pathways. Additionally, tetrahedral DNA nanostructures have been shown to repair urethral injury in rats, potentially by modulating immune and inflammatory responses. These findings suggest that controlled inhibition of immune responses can promote tissue repair and regeneration.
From immune response-inhibiting signal transduction-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does knockout of NFKB1 enhance immune responses? | NFKB1 knockout cell line or mouse model |
| Can point mutation in STAT1 prevent viral antagonism? | STAT1 mutant knock-in cells |
| Does overexpression of SOCS1 suppress inflammation? | SOCS1 overexpression lentiviral system |
| How does berberine affect NF-kB signaling? | NF-kB reporter cell line with berberine treatment |
| What is the role of MAPK14 in immune inhibition? | MAPK14 knockout macrophages |
| Can CRISPR activation of IL10 treat autoimmune disease? | dCas9-VP64 activation in T cells |
How to Study the immune response-inhibiting signal transduction Process
| Method | What It Measures | Typical Application |
|---|---|---|
| RNA-seq | Global gene expression changes | Identify pathways modulated by immune inhibitors |
| Phosphoproteomics | Phosphorylation status of signaling proteins | Map kinase cascades in immune inhibition |
| CRISPR knockout screen | Genes required for immune inhibition | Discover novel regulators |
| NF-kB reporter assay | NF-kB transcriptional activity | Test anti-inflammatory compounds |
| Western blot | Protein expression and phosphorylation | Validate specific signaling events |
| ELISA | Cytokine levels | Measure inflammatory markers |
| Flow cytometry | Immune cell activation markers | Assess immune suppression |
| Immunofluorescence | Subcellular localization of signaling proteins | Visualize NF-kB nuclear translocation |
Transcriptomic Profiling
RNA sequencing (RNA-seq) is widely used to measure changes in gene expression following activation or inhibition of immune response-inhibiting signal transduction. For example, network pharmacology analysis of berberine identified multiple pathways, including NF-kB and MAPK, through transcriptomic data. Similarly, studies on Jiedu Huayu Granules in acute liver failure utilized RNA-seq to reveal NF-kB pathway regulation.
Proteomic and Phosphoproteomic Analysis
Mass spectrometry-based proteomics can quantify protein abundance and phosphorylation events in signaling cascades. This is particularly useful for studying rapid changes in kinase activity. For instance, the inhibition of STAT signaling by human cytomegalovirus was dissected using phosphoproteomics. Such methods help identify novel components of immune response-inhibiting signal transduction.
CRISPR Screening
Genome-wide CRISPR knockout or activation screens can identify genes that regulate immune response-inhibiting signal transduction. For example, a screen could uncover novel suppressors of NF-kB signaling. This approach has been used to study viral antagonists and host factors. The resulting hits can be validated with targeted knockouts.
Imaging and Reporter Assays
Live-cell imaging with fluorescent reporters (e.g., NF-kB-GFP) allows real-time monitoring of signaling dynamics. This method has been applied to study the effects of berberine on NF-kB translocation. Reporter assays are also used to measure the activity of specific transcription factors in high-throughput screens.
How CRISPR Can Be Used to Study GO:0002765 immune response-inhibiting signal transduction
Knockout
CRISPR knockout is used to delete genes involved in immune response-inhibiting signal transduction to study their loss-of-function phenotypes. For example, knocking out NFKB1 or STAT1 can reveal their roles in suppressing immune responses. This approach is valuable for identifying essential components and potential drug targets.
Point Mutation
Point mutations can be introduced to mimic disease-associated variants or to abrogate specific phosphorylation sites. For instance, mutating the STAT1 phosphorylation site can prevent its activation and alter immune inhibition. Such models help dissect the precise molecular mechanisms.
Knock-in
Knock-in of reporter genes or tags (e.g., GFP, luciferase) allows real-time monitoring of signaling proteins. A STAT1-GFP knock-in cell line can be used to track STAT1 localization and degradation. This is useful for high-content imaging and drug screening.
Overexpression
Overexpression of genes like SOCS1 or IL10 can enhance immune inhibition and is used to study their suppressive functions. For example, lentiviral overexpression of SOCS1 in macrophages reduces inflammatory cytokine production. This approach can also be used to create disease models.
How EDITGENE Supports immune response-inhibiting signal transduction Research
Researchers studying immune response-inhibiting signal transduction-related genes often need to determine whether a candidate gene is causally involved in suppressing immune responses. This requires precise genetic manipulation, which can be achieved through CRISPR-based technologies. EDITGENE provides comprehensive services to support such studies, from knockout to overexpression models.
Contact EDITGENE today to design your custom CRISPR model for immune response-inhibiting signal transduction research.
Frequently Asked Questions About immune response-inhibiting signal transduction
What is GO:0002765?
GO:0002765 is the Gene Ontology term for immune response-inhibiting signal transduction, the process by which a signal ultimately leads to inhibition of an immune response.
What genes are involved in immune response-inhibiting signal transduction?
Key genes include NFKB1, STAT1, SOCS1, SOCS3, MAPK1, and IL10, among others.
How is immune response-inhibiting signal transduction regulated?
It is regulated by feedback inhibitors like SOCS proteins, phosphatases, and pharmacological agents such as berberine.
What diseases are associated with immune response-inhibiting signal transduction?
Diseases include rheumatoid arthritis, acute liver failure, and viral infections like human cytomegalovirus.
How can I study immune response-inhibiting signal transduction?
You can use CRISPR knockout, RNA-seq, proteomics, and reporter assays to study this process.
What is the role of NF-kB in immune response-inhibiting signal transduction?
NF-kB is a transcription factor that promotes inflammation; its inhibition is a key mechanism of immune response inhibition.
How does human cytomegalovirus inhibit immune signaling?
HCMV encodes an antagonist that blocks type I IFN-dependent STAT signaling, thereby inhibiting antiviral responses.
Can traditional Chinese medicine modulate immune response-inhibiting signal transduction?
Yes, formulas like Jiedu Huayu Granules and compounds like berberine modulate NF-kB and other pathways to inhibit immune responses.
What CRISPR models are available for studying this process?
Knockout, point mutation, knock-in, and overexpression models can be generated for genes like STAT1 and SOCS1.
Why is immune response-inhibiting signal transduction important for cancer?
Tumors can exploit these pathways to evade immune attack, making them targets for immunotherapy.
Conclusion
Immune response-inhibiting signal transduction (GO:0002765) is a critical biological process that maintains immune homeostasis and is subverted in various diseases. Understanding its molecular mechanisms, key genes, and regulatory networks provides opportunities for therapeutic intervention. CRISPR-based models and advanced omics technologies are indispensable for dissecting this pathway. EDITGENE offers a suite of services to support researchers in this endeavor, from custom knockout cell lines to bioinformatics analysis.
References
- 1. Wang K et al.. 2024. Inhibition of inflammation by berberine: Molecular mechanism and network pharmacology analysis.. Phytomedicine 128:155258 PMID: 38522318
- 2. Bai W et al.. 2022. Chinese Herb Jiedu Huayu Granules Inhibiting Immune and Inflammatory Response of Rats with Acute Liver Failure by Regulating the NF-κB Signaling Pathway.. Biomed Res Int 2022:4479885 PMID: 35601154
- 3. Wang S et al.. 2025. Signal pathways in the treatment of Rheumatoid Arthritis with traditional Chinese medicine.. J Ethnopharmacol 353(Pt B):120387 PMID: 40774578
- 4. Guo C et al.. 2026. Role and mechanism of tetrahedral DNA nanostructures in the repair of urethral injury in rats.. Mol Med Rep 33(4) PMID: 41645752
- 5. Paulus C et al.. 2006. A human cytomegalovirus antagonist of type I IFN-dependent signal transducer and activator of transcription signaling.. Proc Natl Acad Sci U S A 103(10):3840-5 PMID: 16497831
