GO:1904996 positive regulation of leukocyte adhesion to vascular endothelial cell: Signaling Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:1904996 describes any process that activates or increases the frequency, rate, or extent of leukocyte adhesion to vascular endothelial cells.
• This process is driven by cytokine-inducible endothelial adhesion molecules such as E-selectin, VCAM-1, and ICAM-1, which are transcriptionally regulated by NF-kappa B.
• Nitric oxide and S-nitrosylation modulate the expression of endothelial adhesion proteins that control leukocyte and tumor cell adhesion.
• Uremic toxins like indoxyl sulfate upregulate E-selectin and promote leukocyte-endothelial interactions, linking this GO term to chronic kidney disease.
• Galectin-1 and other lectins are implicated in leukocyte adhesion in proliferative diabetic retinopathy, highlighting disease relevance.
• CRISPR-based knockout, knock-in, and overexpression models are essential to dissect the causal roles of genes regulating leukocyte adhesion.
Description
Leukocyte adhesion to vascular endothelial cells is a critical step in immune surveillance and inflammation. The Gene Ontology term GO:1904996, positive regulation of leukocyte adhesion to vascular endothelial cell, encompasses any process that activates or increases the frequency, rate, or extent of this adhesion. This process is tightly controlled by a network of endothelial adhesion molecules, chemokines, and signaling pathways that respond to inflammatory stimuli. Dysregulation of leukocyte adhesion contributes to a wide range of pathologies, including atherosclerosis, inflammatory bowel disease, and diabetic retinopathy [2,3,4]. Understanding the molecular players and regulatory mechanisms is therefore essential for developing targeted therapies. Researchers studying this process rely on accurate annotation and experimental models to identify causal genes and pathways.
positive regulation of leukocyte adhesion to vascular endothelial cell At A Glance
| GO ID | GO:1904996 |
|---|---|
| GO term | positive regulation of leukocyte adhesion to vascular endothelial cell |
| Ontology | biological_process |
| Synonym | activation of leukocyte adhesion to vascular endothelial cell; up regulation of leukocyte adhesion to vascular endothelial cell; up-regulation of leukocyte adhesion to vascular endothelial cell; upregulation of leukocyte adhesion to vascular endothelial cell |
| Major function | Enhances the adhesion of leukocytes to endothelial cells, a key step in inflammation and immune response. |
| Related cellular components | Endothelial cell plasma membrane, adhesion plaques, extracellular matrix |
| Related molecular functions | Cell adhesion molecule binding, cytokine receptor activity, transcription factor activity |
| Regulatory pathways | NF-kappa B signaling, cytokine signaling, nitric oxide signaling |
| Disease relevance | Inflammatory bowel disease, diabetic retinopathy, chronic kidney disease, primary biliary cirrhosis |
What Is GO:1904996?
GO:1904996 is a biological process term defined as any process that activates or increases the frequency, rate or extent of leukocyte adhesion to vascular endothelial cell. In other words, it covers the positive regulatory events that enhance the physical interaction between leukocytes (such as neutrophils, monocytes, and lymphocytes) and the endothelial lining of blood vessels. This includes signaling cascades, transcriptional upregulation of adhesion molecules, and post-translational modifications that strengthen adhesion.
Why Is positive regulation of leukocyte adhesion to vascular endothelial cell Important in Cell Biology?
GO:1904996 is important because leukocyte adhesion to the endothelium is a rate-limiting step in the inflammatory response and immune cell recruitment. Positive regulation of this process ensures rapid and efficient immune surveillance, but when dysregulated, it drives chronic inflammatory diseases and tissue damage [1,2]. Understanding the positive regulators of leukocyte adhesion can reveal therapeutic targets for conditions such as inflammatory bowel disease, diabetic retinopathy, and atherosclerosis [3,4,7].
• Critical for immune cell recruitment to sites of infection and injury.
• Dysregulation leads to chronic inflammatory diseases such as inflammatory bowel disease.
• Implicated in diabetic retinopathy through galectin-1-mediated leukocyte adhesion.
• Uremic toxins like indoxyl sulfate enhance leukocyte-endothelial interactions in kidney disease.
• Nitric oxide and S-nitrosylation modulate adhesion molecule expression, linking to vascular biology.
• Cyclosporine enhances leukocyte adhesion under physiologic flow, relevant to transplant medicine.
• Superoxide dismutase downregulates adhesion molecules, offering therapeutic potential.
• Adhesion molecules are expressed in primary biliary cirrhosis, indicating a role in autoimmune liver disease.
• Nutrigenomic flavanols may modulate adhesion pathways in cardiometabolic disease.
• Targeting positive regulators could reduce pathological leukocyte infiltration.
What Happens During positive regulation of leukocyte adhesion to vascular endothelial cell?
Cytokine-Induced Transcriptional Activation
In simple terms: Inflammatory signals turn on genes that make the endothelium sticky for leukocytes.
Pro-inflammatory cytokines such as TNF-alpha and IL-1 beta activate endothelial cells, leading to NF-kappa B-mediated transcription of adhesion molecules including E-selectin, VCAM-1, and ICAM-1. This transcriptional upregulation is a hallmark of positive regulation of leukocyte adhesion.
Post-Translational Modification and Nitric Oxide Signaling
In simple terms: Chemical modifications and nitric oxide can change how well adhesion proteins work.
Nitric oxide (NO) and S-nitrosylation regulate the expression and function of endothelial adhesion proteins that control leukocyte and tumor cell adhesion. This adds a layer of post-translational control to the positive regulation of leukocyte adhesion.
Uremic Toxin-Induced Upregulation
In simple terms: Toxins that build up in kidney disease can make the endothelium more adhesive.
Indoxyl sulfate, a uremic toxin, induces leukocyte-endothelial interactions through up-regulation of E-selectin. This demonstrates how metabolic factors can positively regulate leukocyte adhesion in chronic kidney disease.
Extracellular Matrix and Lectin Interactions
In simple terms: Proteins like galectin-1 can bridge leukocytes and endothelial cells.
Galectin-1 studies in proliferative diabetic retinopathy suggest that lectins can modulate leukocyte adhesion to endothelial cells. This highlights the role of carbohydrate-binding proteins in positive regulation of leukocyte adhesion.
Pharmacological and Antioxidant Modulation
In simple terms: Drugs and antioxidants can either boost or dampen leukocyte adhesion.
Cyclosporine enhances leukocyte adhesion to vascular endothelium under physiologic flow conditions, while superoxide dismutase down-regulates endothelial adhesion molecules and leukocyte adhesion in experimental colitis. These findings show that positive regulation can be influenced by pharmacological and antioxidant interventions [6,7].
Key Genes Involved in GO:1904996 positive regulation of leukocyte adhesion to vascular endothelial cell
The following genes and proteins are central to the positive regulation of leukocyte adhesion to vascular endothelial cells, based on published literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| SELE | Encodes E-selectin, an adhesion molecule upregulated by cytokines and uremic toxins | Mediates rolling and tethering of leukocytes; target in inflammation [1,3] |
| VCAM1 | Encodes VCAM-1, binds integrins on leukocytes | Critical for firm adhesion; regulated by NF-kappa B |
| ICAM1 | Encodes ICAM-1, binds beta2 integrins | Facilitates leukocyte transmigration; modulated by NO [1,2] |
| NFKB1 | Transcription factor subunit that drives adhesion molecule expression | Central to cytokine-inducible enhancers |
| NOS2 | Inducible nitric oxide synthase, produces NO | Regulates adhesion protein expression via S-nitrosylation |
| LGALS1 | Galectin-1, carbohydrate-binding protein | Implicated in diabetic retinopathy leukocyte adhesion |
| SOD1 | Superoxide dismutase 1, antioxidant enzyme | Downregulates adhesion molecules in colitis |
| TNF | Pro-inflammatory cytokine | Induces adhesion molecule expression |
| IL1B | Pro-inflammatory cytokine | Activates NF-kappa B and adhesion molecules |
| PPARG | Nuclear receptor, anti-inflammatory | May modulate adhesion in cardiometabolic disease |
| NFE2L2 | Transcription factor, antioxidant response | Potential regulator of adhesion via redox balance |
| CXCL8 | Chemokine, activates leukocytes | Promotes adhesion and recruitment |
| CCL2 | Chemokine, recruits monocytes | Enhances leukocyte-endothelial interactions |
| ITGB2 | Integrin beta-2, leukocyte adhesion molecule | Binds ICAM-1 for firm adhesion |
| ITGAL | Integrin alpha-L, forms LFA-1 | Binds ICAM-1; key for leukocyte adhesion |
| CD44 | Cell surface glycoprotein | Involved in leukocyte rolling and adhesion |
| STAT3 | Transcription factor | Regulates adhesion molecule expression in inflammation |
| RELA | NF-kappa B subunit | Drives transcription of adhesion molecules |
How Is positive regulation of leukocyte adhesion to vascular endothelial cell Regulated?
The positive regulation of leukocyte adhesion to vascular endothelial cells is controlled by a complex network of signaling pathways. NF-kappa B is a master transcriptional regulator that responds to cytokines and induces adhesion molecules. Nitric oxide and S-nitrosylation provide post-translational control, modulating the expression of endothelial adhesion proteins. Additionally, metabolic factors such as indoxyl sulfate can upregulate E-selectin, linking uremic conditions to enhanced adhesion. Antioxidant enzymes like superoxide dismutase can downregulate adhesion molecules, suggesting a redox-sensitive regulatory mechanism. Pharmacological agents such as cyclosporine can also enhance adhesion under flow conditions.
positive regulation of leukocyte adhesion to vascular endothelial cell and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| SELE | Chronic kidney disease, inflammation | Endothelial cell overexpression and KO in mouse models |
| LGALS1 | Diabetic retinopathy | Knockout mice and retinal endothelial cells |
| SOD1 | Inflammatory bowel disease | Colitis mouse models with SOD1 overexpression |
| NFKB1 | Autoimmune liver disease | Liver-specific KO mice |
| VCAM1 | Atherosclerosis | ApoE KO mice with VCAM1 conditional KO |
Inflammatory Bowel Disease
In chronic immune experimental colitis, down-regulation of endothelial adhesion molecules and leukocyte adhesion by superoxide dismutase treatment is beneficial, indicating that positive regulation of leukocyte adhesion contributes to disease pathogenesis.
Diabetic Retinopathy
Galectin-1 studies in proliferative diabetic retinopathy suggest that leukocyte adhesion to endothelial cells is enhanced, potentially contributing to retinal neovascularization and inflammation.
Chronic Kidney Disease
Indoxyl sulfate, a uremic toxin, induces leukocyte-endothelial interactions through up-regulation of E-selectin, linking positive regulation of leukocyte adhesion to cardiovascular complications in kidney disease.
Primary Biliary Cirrhosis
Histopathological studies of primary biliary cirrhosis emphasize the expression of adhesion molecules, suggesting that positive regulation of leukocyte adhesion plays a role in the autoimmune liver disease.
From positive regulation of leukocyte adhesion to vascular endothelial cell-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does gene X positively regulate leukocyte adhesion? | CRISPR knockout of gene X in endothelial cells followed by adhesion assay |
| Does a point mutation in gene X alter adhesion? | CRISPR point mutation knock-in in endothelial cells |
| Does overexpression of gene X enhance adhesion? | CRISPR activation or lentiviral overexpression |
| Does a tag affect gene X localization? | CRISPR tagged knock-in with fluorescent tag |
| Which genes regulate adhesion in a genome-wide manner? | CRISPR library screening in endothelial cells under flow |
| What are the transcriptomic changes during adhesion? | RNA-seq after cytokine stimulation and CRISPR KO |
How to Study the positive regulation of leukocyte adhesion to vascular endothelial cell Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Flow chamber assay | Leukocyte adhesion under shear stress | Testing pharmacological modulators |
| RNA-seq | Transcriptional changes | Identifying adhesion-related genes |
| Western blot | Protein expression of adhesion molecules | Validating E-selectin upregulation |
| Immunofluorescence | Localization of adhesion proteins | Visualizing VCAM-1 on endothelium |
| CRISPR knockout | Loss-of-function effects | Determining causal genes |
| CRISPR activation | Gain-of-function effects | Overexpressing candidate genes |
| Bioinformatics | Pathway enrichment | Analyzing nutrigenomic data |
Flow Chamber Adhesion Assays
Flow chamber assays allow real-time visualization of leukocyte adhesion to endothelial cells under physiological shear stress, as demonstrated in studies with cyclosporine.
Transcriptomic Profiling
RNA-seq and bioinformatic analysis can identify genes and pathways involved in positive regulation of leukocyte adhesion, as shown in nutrigenomic studies of flavanols.
Protein Expression Analysis
Western blotting and immunofluorescence can quantify adhesion molecule expression, such as E-selectin upregulation by indoxyl sulfate.
CRISPR Screening
Genome-wide CRISPR knockout screens can identify positive regulators of leukocyte adhesion by selecting for loss of adhesion under flow conditions.
How CRISPR Can Be Used to Study GO:1904996 positive regulation of leukocyte adhesion to vascular endothelial cell
Knockout
CRISPR knockout of candidate genes in endothelial cells can determine whether they are required for positive regulation of leukocyte adhesion. For example, knocking out SELE or VCAM1 would reduce adhesion [1,3].
Point Mutation
Introducing point mutations in adhesion molecule genes can dissect specific residues required for leukocyte binding, such as those in ICAM1 or ITGB2.
Knock-in
Knock-in of tagged versions of adhesion molecules allows live-cell imaging and quantification of their dynamics during leukocyte adhesion.
Overexpression
Overexpression of positive regulators such as NFKB1 or SELE can enhance leukocyte adhesion, providing gain-of-function evidence [1,3].
How EDITGENE Supports positive regulation of leukocyte adhesion to vascular endothelial cell Research
Researchers studying positive regulation of leukocyte adhesion to vascular endothelial cell-related genes often need to determine whether a candidate gene is causally involved in enhancing adhesion. EDITGENE provides a comprehensive suite of CRISPR services to accelerate this research.
Contact EDITGENE today to design your custom CRISPR model for positive regulation of leukocyte adhesion to vascular endothelial cell research.
Frequently Asked Questions About positive regulation of leukocyte adhesion to vascular endothelial cell
What is GO:1904996?
GO:1904996 is a Gene Ontology term for any process that activates or increases the frequency, rate or extent of leukocyte adhesion to vascular endothelial cell.
What genes are involved in positive regulation of leukocyte adhesion?
Key genes include SELE, VCAM1, ICAM1, NFKB1, and NOS2, among others [1,2,3].
How is leukocyte adhesion regulated?
It is regulated by cytokines, NF-kappa B signaling, nitric oxide, and metabolic factors like indoxyl sulfate [1,2,3].
What diseases are associated with leukocyte adhesion?
Inflammatory bowel disease, diabetic retinopathy, chronic kidney disease, and primary biliary cirrhosis [3,4,7,8].
How can I study positive regulation of leukocyte adhesion?
Use flow chamber assays, CRISPR knockout, RNA-seq, and protein analysis [5,6].
What is the role of E-selectin in leukocyte adhesion?
E-selectin is upregulated by cytokines and uremic toxins and mediates leukocyte rolling [1,3].
Does nitric oxide affect leukocyte adhesion?
Yes, NO and S-nitrosylation modulate the expression of endothelial adhesion proteins.
What is the role of NF-kappa B in leukocyte adhesion?
NF-kappa B drives the transcription of adhesion molecules like VCAM-1 and ICAM-1.
Can CRISPR be used to study leukocyte adhesion?
Yes, CRISPR knockout, knock-in, and overexpression are powerful tools to dissect gene function.
What models are used to study leukocyte adhesion?
Endothelial cell culture, flow chambers, and mouse models of inflammation [6,7].
Conclusion
GO:1904996, positive regulation of leukocyte adhesion to vascular endothelial cell, is a critical biological process in inflammation and immune response. Its dysregulation contributes to numerous diseases, making it a prime target for therapeutic intervention. CRISPR-based models and advanced screening methods are essential to uncover the molecular mechanisms and identify new drug targets. EDITGENE provides the tools and expertise to accelerate this research.
References
- 1. Collins T et al.. 1995. Transcriptional regulation of endothelial cell adhesion molecules: NF-kappa B and cytokine-inducible enhancers.. FASEB J 9(10):899-909 PMID: 7542214
- 2. Aguilar G et al.. 2020. Role of NO and S-nitrosylation in the Expression of Endothelial Adhesion Proteins That Regulate Leukocyte and Tumor Cell Adhesion.. Front Physiol 11:595526 PMID: 33281627
- 3. Ito S et al.. 2010. Indoxyl sulfate induces leukocyte-endothelial interactions through up-regulation of E-selectin.. J Biol Chem 285(50):38869-75 PMID: 20937831
- 4. Abu El-Asrar AM et al.. 2020. Galectin-1 studies in proliferative diabetic retinopathy.. Acta Ophthalmol 98(1):e1-e12 PMID: 31318490
- 5. Ruskovska T et al.. 2020. Systematic bioinformatic analysis of nutrigenomic data of flavanols in cell models of cardiometabolic disease.. Food Funct 11(6):5040-5064 PMID: 32537624
- 6. Gallego MJ et al.. 1996. Cyclosporine enhances leukocyte adhesion to vascular endothelium under physiologic flow conditions.. Am J Kidney Dis 28(1):23-31 PMID: 8712218
- 7. Seguí J et al.. 2005. Down-regulation of endothelial adhesion molecules and leukocyte adhesion by treatment with superoxide dismutase is beneficial in chronic immune experimental colitis.. Inflamm Bowel Dis 11(10):872-82 PMID: 16189416
- 8. Nakanuma Y et al.. 1997. Histopathology of primary biliary cirrhosis with emphasis on expression of adhesion molecules.. Semin Liver Dis 17(1):35-47 PMID: 9089909
