FLT3 p.Gln640SerfsTer8 signaling (WP5431)
Homo sapiens
Germline variant FLT3 p.Gln640SerfsTer8 lacks the catalytic kinase domain. However, the frameshift variant encodes a truncated protein variant that contains a short cytoplasmic segment which harbours two SH2-binding STAT3 docking sites. This results in enhanced STAT3 tyrosine phosphorylation followed by increase STAT3-dependent transcription activity. Expression of FLT3 p.Gln640SerfsTer8 in T lymphoblast model cell line BW5147 results in increased proliferation and increased cell surface expression of inflammatory chemokine receptors CCR5 and CCR6, which are involved in migration of immune cells to mucosal tissues and inflamed areas.
Authors
Ulaganathan , Egon Willighagen , Martina Summer-Kutmon , Eric Weitz , and Kristina HanspersActivity
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Organisms
Homo sapiensCommunities
Annotations
Pathway Ontology
signaling pathway pertinent to immunity altered signaling pathway signaling pathwayLabel | Type | Compact URI | Comment |
---|---|---|---|
CCR5 | Protein | uniprot:P51681 | |
STAT3 | Protein | uniprot:P40763 | |
FLT3 | Protein | uniprot:P36888 | |
CCR6 | Protein | uniprot:P51684 |
References
- Functional expression of chemokine receptor CCR6 on human effector memory CD8+ T cells. Kondo T, Takata H, Takiguchi M. Eur J Immunol. 2007 Jan;37(1):54–65. PubMed Europe PMC Scholia
- TraPS-VarI: Identifying genetic variants altering phosphotyrosine based signalling motifs. Ulaganathan VK. Sci Rep. 2020 May 21;10(1):8453. PubMed Europe PMC Scholia