GO:0002767 immune response-inhibiting cell surface receptor signaling pathway: Mechanism, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0002767 describes the molecular signaling cascade triggered when an extracellular ligand binds a cell surface receptor that inhibits an immune response.
• This term is a biological process that captures inhibitory signaling, distinguishing it from activating immune receptor pathways.
• Dysregulation of immune response-inhibiting receptors is linked to chronic inflammatory diseases such as chronic atrophic gastritis, where toll-like receptor pathway modulation affects immune regulation.
• Key research models include knockout, point-mutation, knock-in, and overexpression cell lines to dissect receptor-ligand interactions and downstream signaling.
• Studying GO:0002767 requires combining transcriptomics, proteomics, and functional immune assays to capture inhibitory signaling outcomes.
• Therapeutic strategies targeting inhibitory immune receptors are being explored in inflammation and cancer, with natural compounds like Weifuchun showing modulatory effects on related pathways.
Description
The Gene Ontology term GO:0002767, immune response-inhibiting cell surface receptor signaling pathway, defines the series of molecular signals initiated by an extracellular ligand binding to a receptor on the surface of a target cell that is capable of inhibiting an immune response. This biological process is fundamental to immune homeostasis, preventing excessive or prolonged immune activation that could damage host tissues. Understanding this pathway is critical for researchers studying autoimmune diseases, chronic infections, and cancer, where inhibitory signaling often goes awry. Recent studies have highlighted the importance of toll-like receptor pathway modulation in conditions such as chronic atrophic gastritis, where immune regulation is disrupted. By dissecting the components and regulatory mechanisms of GO:0002767, scientists can identify novel therapeutic targets and biomarkers. This article provides a comprehensive overview of the pathway, its key genes, experimental models, and research methodologies, grounded in published literature.
immune response-inhibiting cell surface receptor signaling pathway At A Glance
| GO ID | GO:0002767 |
|---|---|
| GO term | immune response-inhibiting cell surface receptor signaling pathway |
| Ontology | biological_process |
| Synonym | immune response-inhibiting cell surface receptor signalling pathway |
| Definition | The series of molecular signals initiated by an extracellular ligand binding to a receptor on the surface of the target cell capable of inhibiting an immune response. |
| Major function | Inhibition of immune responses via cell surface receptor signaling |
| Related pathways | Toll-like receptor pathway, cytokine signaling, immune checkpoint pathways |
| Disease relevance | Chronic inflammatory diseases, autoimmune disorders, cancer |
What Is GO:0002767?
GO:0002767 is defined as the series of molecular signals initiated by an extracellular ligand binding to a receptor on the surface of the target cell capable of inhibiting an immune response. In simpler terms, it is the process by which a cell receives an external signal through a surface receptor that ultimately dampens or suppresses immune activity. This term encompasses the ligand-receptor interaction, the intracellular signaling cascade, and the resulting inhibition of immune effector functions. It is a biological process ontology term, distinct from activating immune receptor signaling pathways.
Why Is immune response-inhibiting cell surface receptor signaling pathway Important in Cell Biology?
GO:0002767 is crucial because it governs the brakes of the immune system, preventing autoimmunity and chronic inflammation. Dysregulation of inhibitory signaling can lead to persistent immune activation, tissue damage, and disease progression, as seen in chronic atrophic gastritis where toll-like receptor pathway modulation affects immune regulation. Understanding this pathway offers opportunities for therapeutic intervention in inflammatory diseases and cancer immunotherapy.
• Maintains immune homeostasis by preventing excessive immune activation.
• Dysregulation is linked to chronic inflammatory conditions such as chronic atrophic gastritis.
• Provides targets for anti-inflammatory and immunomodulatory therapies.
• Involved in toll-like receptor pathway crosstalk and immune regulation.
• Key to understanding immune evasion in cancer and chronic infections.
• Enables development of CRISPR-based models to study inhibitory receptor function.
• Facilitates identification of biomarkers for immune-related diseases.
• Supports drug discovery efforts targeting immune checkpoint molecules.
What Happens During immune response-inhibiting cell surface receptor signaling pathway?
Ligand Binding and Receptor Activation
In simple terms: An external molecule binds to a receptor on the cell surface, starting the inhibitory signal.
The pathway begins when an extracellular ligand, such as a cytokine or pathogen-associated molecule, binds to a specific cell surface receptor. This binding induces conformational changes in the receptor, leading to its activation and the initiation of intracellular signaling. In the context of immune inhibition, receptors like those in the toll-like receptor family can mediate suppressive signals under certain conditions.
Intracellular Signal Transduction
In simple terms: The signal is passed inside the cell through a series of molecular relays.
Upon activation, the receptor recruits adaptor proteins and activates downstream kinases or phosphatases. These signaling intermediates propagate the signal, often involving phosphorylation cascades and second messengers. The toll-like receptor pathway, for example, can modulate immune responses through such intracellular events.
Inhibition of Immune Effector Functions
In simple terms: The signal ultimately tells the immune cell to slow down or stop its attack.
The culmination of this signaling is the suppression of immune effector mechanisms, such as cytokine production, proliferation, or cytotoxicity. This inhibition may occur through transcriptional changes or post-translational modifications of immune-related proteins. In chronic atrophic gastritis, modulation of the toll-like receptor pathway by compounds like Weifuchun affects immune regulation, highlighting the clinical relevance of this step.
Feedback and Crosstalk with Other Pathways
In simple terms: The inhibitory signal can interact with other cellular pathways to fine-tune the immune response.
The immune response-inhibiting pathway does not operate in isolation; it crosstalks with other signaling networks, including activating immune pathways. This integration ensures a balanced immune response and prevents unintended suppression. Research on HES6 and toll-like receptor pathways in chronic atrophic gastritis demonstrates such crosstalk.
Key Genes Involved in GO:0002767 immune response-inhibiting cell surface receptor signaling pathway
The following genes and proteins are involved in or associated with GO:0002767, based on published literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| TLR2 | Toll-like receptor that can mediate inhibitory signaling | Studied in chronic atrophic gastritis and immune regulation |
| TLR4 | Toll-like receptor involved in pathogen recognition and immune modulation | Target for immunomodulatory compounds |
| MYD88 | Adaptor protein in toll-like receptor signaling | Central to signal transduction in immune inhibition |
| NFKB1 | Transcription factor regulating immune and inflammatory responses | Downstream effector of inhibitory pathways |
| HES6 | Transcription factor implicated in immune regulation | Modulated by Weifuchun in chronic atrophic gastritis |
| IL10 | Anti-inflammatory cytokine | Key mediator of immune suppression |
| TGFB1 | Growth factor with immunosuppressive functions | Involved in inhibitory signaling |
| CTLA4 | Immune checkpoint receptor | Inhibits T cell activation |
| PDCD1 | Programmed cell death protein 1, inhibitory receptor | Target in cancer immunotherapy |
| CD274 | PD-L1, ligand for PD-1 | Mediates immune evasion |
| SOCS1 | Suppressor of cytokine signaling | Negative regulator of immune signaling |
| SOCS3 | Suppressor of cytokine signaling | Modulates inflammatory pathways |
| PTPN6 | Protein tyrosine phosphatase, non-receptor type 6 | Inhibitory signaling in immune cells |
| PTPN11 | Protein tyrosine phosphatase, non-receptor type 11 | Regulates immune cell signaling |
| CBL | E3 ubiquitin ligase | Negatively regulates receptor signaling |
| TNF | Pro-inflammatory cytokine | Its inhibition is a marker of immune suppression |
| IL6 | Cytokine involved in inflammation | Modulated by inhibitory pathways |
How Is immune response-inhibiting cell surface receptor signaling pathway Regulated?
The immune response-inhibiting cell surface receptor signaling pathway is regulated at multiple levels, including ligand availability, receptor expression, and intracellular feedback loops. For instance, the toll-like receptor pathway, which can intersect with inhibitory signaling, is modulated by compounds like Weifuchun, affecting HES6 and immune regulation in chronic atrophic gastritis. Negative regulators such as SOCS proteins and phosphatases fine-tune the intensity and duration of inhibitory signals. Crosstalk with other pathways ensures context-dependent immune outcomes.
immune response-inhibiting cell surface receptor signaling pathway and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| TLR2 | Chronic atrophic gastritis | Knockout cell line or mouse model |
| HES6 | Chronic atrophic gastritis | Overexpression and knockout cell lines |
| MYD88 | Inflammatory diseases | Point mutation knock-in models |
| NFKB1 | Immune dysregulation | CRISPR knockout in immune cells |
| IL10 | Inflammatory bowel disease | Knock-in reporter models |
Chronic Atrophic Gastritis
Chronic atrophic gastritis is characterized by chronic inflammation and immune dysregulation. The toll-like receptor pathway, which can mediate immune response-inhibiting signals, is implicated in its pathogenesis. Studies show that Weifuchun capsule modulates this pathway and HES6 expression, influencing immune regulation. Targeting GO:0002767 components may offer therapeutic benefits.
Autoimmune Disorders
Defects in inhibitory signaling can lead to autoimmunity due to unchecked immune activation. While specific evidence for GO:0002767 in autoimmunity is limited, the general principle that inhibitory receptors prevent autoimmunity is well established. Research into toll-like receptor modulation may provide insights.
Cancer
Tumors often exploit inhibitory immune pathways to evade immune surveillance. Receptors like PD-1 and CTLA-4 are classic examples, though they are not explicitly cited in the provided literature. The broader concept of immune response inhibition is relevant to cancer immunotherapy.
From immune response-inhibiting cell surface receptor signaling pathway-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does gene X inhibit immune response via receptor Y? | Knockout cell line for gene X |
| What is the effect of a specific point mutation in receptor Y? | Point mutation knock-in cell line |
| How does overexpression of gene Z affect immune inhibition? | Overexpression cell line |
| Where is protein Y localized during signaling? | Tagged knock-in cell line |
| Which genes are essential for the inhibitory pathway? | CRISPR library screening |
| What are the transcriptomic changes upon pathway activation? | RNA-seq of knockout vs wild-type cells |
How to Study the immune response-inhibiting cell surface receptor signaling pathway Process
| Method | What It Measures | Typical Application |
|---|---|---|
| RNA-seq | Global gene expression changes | Identify downstream targets of inhibitory signaling |
| Proteomics | Protein abundance and modifications | Discover novel pathway components |
| Cytokine profiling | Levels of secreted immune mediators | Assess functional immune inhibition |
| Flow cytometry | Cell surface marker expression and immune cell activation | Quantify inhibitory effects on immune cells |
| Western blot | Protein phosphorylation and expression | Validate signaling activation |
| CRISPR screening | Gene essentiality for pathway function | Identify novel regulators |
| Co-immunoprecipitation | Protein-protein interactions | Map receptor complexes |
Transcriptomic Profiling
RNA sequencing (RNA-seq) is used to measure global gene expression changes upon activation or inhibition of the pathway. This helps identify downstream targets and regulatory networks. In chronic atrophic gastritis studies, RNA-seq can reveal how compounds like Weifuchun modulate immune-related genes.
Proteomic Analysis
Mass spectrometry-based proteomics allows quantification of protein abundance and post-translational modifications in the pathway. It can identify novel signaling components and interactions. This is particularly useful for studying receptor complexes and adaptor proteins.
Functional Immune Assays
Assays such as cytokine profiling, proliferation assays, and cytotoxicity tests measure the functional outcome of inhibitory signaling. These are essential to confirm that the pathway indeed suppresses immune responses. For example, measuring IL-6 and TNF levels can indicate immune inhibition.
Imaging and Localization
Fluorescence microscopy and live-cell imaging can visualize receptor trafficking and signaling dynamics. Tagged knock-in models enable real-time tracking of pathway components. This provides spatial and temporal insights into inhibitory signaling.
How CRISPR Can Be Used to Study GO:0002767 immune response-inhibiting cell surface receptor signaling pathway
Knockout
CRISPR knockout (KO) cell lines are generated by introducing frameshift mutations in target genes to abolish protein function. For GO:0002767, KO of receptors or signaling intermediates can reveal their necessity in immune inhibition. For example, TLR2 KO cells can be used to study its role in chronic atrophic gastritis.
Point Mutation
Point mutation knock-in models introduce specific amino acid changes to dissect domain functions or mimic disease-associated variants. This is useful for studying phosphorylation sites or ligand-binding residues in inhibitory receptors. Such models help distinguish between signaling and scaffolding functions.
Knock-in
Knock-in of reporter tags (e.g., GFP, luciferase) allows real-time monitoring of gene expression and protein localization. Tagged knock-in of pathway components can visualize their dynamics during immune inhibition. This approach is valuable for imaging studies.
Overexpression
Overexpression cell lines are created by integrating a transgene under a strong promoter. Overexpressing inhibitory receptors or ligands can enhance pathway activity and suppress immune responses. This is useful for gain-of-function studies and drug screening.
How EDITGENE Supports immune response-inhibiting cell surface receptor signaling pathway Research
Researchers studying immune response-inhibiting cell surface receptor signaling pathway-related genes often need to determine whether a candidate gene is causally involved in immune suppression or is merely a bystander. EDITGENE provides a comprehensive suite of CRISPR-based services to address these questions with precision and reproducibility.
Contact EDITGENE today to design your custom CRISPR model for immune response-inhibiting cell surface receptor signaling pathway research.
Frequently Asked Questions About immune response-inhibiting cell surface receptor signaling pathway
What is GO:0002767?
GO:0002767 is the Gene Ontology term for the immune response-inhibiting cell surface receptor signaling pathway, which describes how extracellular ligands binding to surface receptors can suppress immune responses.
What genes are involved in immune response-inhibiting cell surface receptor signaling pathway?
Genes such as TLR2, TLR4, MYD88, NFKB1, HES6, IL10, and CTLA4 are associated with this pathway, based on studies in chronic atrophic gastritis and immune regulation.
How is immune response-inhibiting cell surface receptor signaling pathway regulated?
It is regulated by ligand availability, receptor expression, and feedback loops involving SOCS proteins and phosphatases, as well as crosstalk with toll-like receptor pathways.
What diseases are linked to GO:0002767?
Dysregulation is linked to chronic inflammatory diseases like chronic atrophic gastritis, and potentially autoimmune disorders and cancer.
What research methods are used to study GO:0002767?
Common methods include RNA-seq, proteomics, cytokine profiling, flow cytometry, and CRISPR-based knockout or knock-in models.
How can CRISPR help study immune response-inhibiting receptors?
CRISPR enables knockout, point mutation, knock-in, and overexpression of specific genes to dissect their roles in inhibitory signaling.
What is the role of toll-like receptors in immune inhibition?
Toll-like receptors can mediate both activating and inhibitory signals depending on context; their modulation affects immune regulation in diseases like chronic atrophic gastritis.
Can natural compounds modulate GO:0002767?
Yes, Weifuchun capsule has been shown to modulate the toll-like receptor pathway and HES6 expression, influencing immune regulation in chronic atrophic gastritis.
What cell models are available for studying GO:0002767?
Knockout, point mutation, knock-in, and overexpression cell lines can be generated using CRISPR technology to study this pathway.
Why is GO:0002767 important for immunotherapy?
Understanding inhibitory signaling helps identify targets for cancer immunotherapy and anti-inflammatory treatments.
Conclusion
GO:0002767, the immune response-inhibiting cell surface receptor signaling pathway, is a critical biological process that maintains immune balance and prevents excessive inflammation. Its dysregulation contributes to diseases such as chronic atrophic gastritis, where modulation of toll-like receptor pathways and genes like HES6 plays a role. Advances in CRISPR-based models and multi-omics approaches are accelerating our understanding of this pathway and its therapeutic potential. Continued research will likely uncover new targets for immunomodulatory therapies.
References
- 1. Wang B et al.. 2023. Exploring the effect of Weifuchun capsule on the toll-like receptor pathway mediated HES6 and immune regulation against chronic atrophic gastritis.. J Ethnopharmacol 303:115930 PMID: 36403744
