Phosphotyrosine residues of CSF1R and their role in oncogenesis

Phospho-tyrosine residue (CSF1R)Mechanism of actionCancerManifestationReferences
Y561SFK activationLung, breastDisruption of cell-cell adhesion via loss of E-cadherin resulting in anchorage-independent growth, motility and survival. DNA synthesis and cytoskeletal reorganization.[1320]
Y571Kinase activationHM (AML, aMPN)Phosphorylation causes kinase activation. Mutated CSF1R-Y571D results in constitutively activated receptor.[21, 22]
Y699MAPK pathwayPTCLTriggers the association of adapter proteins such as Grb2, Mona and Socs1 initiates monocyte differentiation. Cell proliferation.[23]
Y708STAT activationFDC-P1 cell lineMediates responses to interferons (IFNs), and activates macrophage cell proliferation.[24, 25]
Y723PI3K activationCarcinomaMediates p85 subunit of PI3K association with CSF1R. Regulates adhesion, actin polymerization resulting in macrophage motility and invasion.[9]
Y809Tyrosine kinase activationFibroblastsCSF1-induced autophosphorylation of CSF1R. Serves as a binding site for STAT proteins.[10]

HM: hematological malignancies; AML: acute myeloid leukemia; aMPN: atypical myeloproliferative neoplasms; PTCL: peripheral T cell lymphoma; FDC-P1: factor dependent continuous-paterson 1