GNAQ pathways in port-wine stain (Homo sapiens)
From WikiPathways
Description
Port-wine stains are caused by somatic, mosaic mutations in the GNAQ gene. The pathogenic variant is usually a p.R183Q (c.G548A) mutation in guanine nucleotide binding protein alpha subunit q (GNAQ), primarily expressed in endothelial cells. This pathway shows predicted downstream targets of GNAQ that have been implicated in cell proliferation and survival, which leads to angiogenesis and capillary overgrowth.
Quality Tags
Ontology Terms
Saving...Bibliography
- William K. Van Trigt, Kristen M. Kelly, Christopher C. W. Hughes; ''GNAQ mutations drive port wine birthmark-associated Sturge-Weber syndrome: A review of pathobiology, therapies, and current models''; Frontiers in Human Neuroscience, 2022 PubMed Europe PMC Scholia
History
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External references
DataNodes
| View all... |
| Name | Type | Database reference | Comment |
|---|---|---|---|
| AKT | GeneProduct | ENSG00000142208 (Ensembl)  | |
| AMOT | GeneProduct | ENSG00000126016 (Ensembl) | |
| ERK | GeneProduct | ENSG00000100030 (Ensembl) | Literature notes: "No specific YAP inhibitors are currently in clinical use, however, Truong et al. demonstrated that combined therapy with trametinib MEK1/2 inhibition and the lysosome inhibitor chloroquine increased cytotoxicity while indirectly decreasing YAP nuclear localization and transcriptional activity (Feng et al., 2019; Truong et al., 2020). Other groups have proposed GNAQ overactivation of ERK1/2 or MEK1/2 as a driver of UM, but inhibitors of this pathway alone are typically insufficient to stop progression and the degree of MAPK activation is widely heterogeneous within tumor sites" |
| G-beta | GeneProduct | IPR016346 (InterPro) | |
| G-gamma | GeneProduct | IPR036284 (InterPro) | |
| GNAQ | GeneProduct | ENSG00000156052 (Ensembl) | |
| GPCR | Protein | ||
| MEK | GeneProduct | ENSG00000169032 (Ensembl) | "MEK" is an general enzyme that can be encoded by any of 7 genes, per Wikipedia:
MAP2K1 (a.k.a. MEK1) MAP2K2 (a.k.a. MEK2) MAP2K3 (a.k.a. MKK3) MAP2K4 (a.k.a. MKK4) MAP2K5 (a.k.a. MKK5) MAP2K6 (a.k.a. MKK6) MAP2K7 (a.k.a. MKK7) Literature notes: "No specific YAP inhibitors are currently in clinical use, however, Truong et al. demonstrated that combined therapy with trametinib MEK1/2 inhibition and the lysosome inhibitor chloroquine increased cytotoxicity while indirectly decreasing YAP nuclear localization and transcriptional activity (Feng et al., 2019; Truong et al., 2020). Other groups have proposed GNAQ overactivation of ERK1/2 or MEK1/2 as a driver of UM, but inhibitors of this pathway alone are typically insufficient to stop progression and the degree of MAPK activation is widely heterogeneous within tumor sites" |
| MTOR | GeneProduct | ENSG00000198793 (Ensembl) | |
| NFKB1 | GeneProduct | ENSG00000109320 (Ensembl) | |
| PDPK1 | GeneProduct | ENSG00000152256 (Ensembl) | |
| PI3K | GeneProduct | ENSG00000121879 (Ensembl) | |
| PIP2 | Metabolite | ||
| PIP3 | Metabolite | ||
| PKC | GeneProduct | ? (Ensembl) | |
| PLC | GeneProduct | ? (Ensembl) | PLC is a family of genes. The pathway diagram in the publication says "PLC". The publication text refers to PLC-gamma and PLC-beta, each of which is also a smaller gene family.
Literature notes: "There are a variety of well-defined downstream targets of G proteins, although their role in PWB is not understood. GNAQ in particular can stimulate the phospholipase C β (PLC-β) isoforms..." "The exact mechanisms leading to hypertrophy and nodularity are not characterized, but Yin et al. (2017) identify upregulation of PP2A, DAG, and activation of PI3K, PKCα, PDPK1, and PLCγ in the patient tissue." |
| Proliferation and survival | Pathway | ||
| RAC1 | GeneProduct | ENSG00000136238 (Ensembl) | |
| RAF1 | GeneProduct | ENSG00000132155 (Ensembl) | |
| RHOA | GeneProduct | ENSG00000067560 (Ensembl) | https://doi.org/10.3390/cancers14133066 notes: "Feng et al. demonstrated that the GNAQ oncogene is able to control the Hippo pathway through a cytoplasmic protein tyrosine kinase called focal adhesion kinase (FAK). They detailed that Gαq activates FAK through a non-canonical TRIO-RhoA signalling pathway" |
| TRIO | GeneProduct | ENSG00000038382 (Ensembl) | |
| YAP1 | GeneProduct | ENSG00000137693 (Ensembl) |
Annotated Interactions
No annotated interactions
