
IndraLab
Statements
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"SRC is activated by EGFR and induces the gene expression of factors necessary for the maintenance of GSCs, such as SOX1, C–X–C chemokine receptor type 4 (CXCR4), distal-less (DLL) protein, and neurogenic locus notch homolog protein 3 (NOTCH3), through the phosphorylation of STAT3 [ xref ]."
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"Mechanistically, anoikis resistance is controlled by constitutive activation of FAK, EGFR mediated Src activation that leads to MEK and Erk and PI3-K and Akt -1 signaling, increased cytosolic c-Fas-associated death domain like IL-1-converting enzyme like inhibitory protein-long (c-FLIP) that inhibits CD95 induced caspase-8 activation and apoptosis, overexpression of beta-catenin that regulates the function of the LEF and TCF family of transcription factors, and protects cancer cells from suspension induced anoikis."
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"Present data also suggest that only a portion of the intracellular EGFR, Src and Stat3 protein pools are utilized in the formation of the nuclear complex, raising the possibility that there may be diverse cellular pools of EGFR, Src, or Stat3 with different accessibility limitations."
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"EGFR indirectly activates c-Src by binding to Ral-GTPase and then activating the downstream transcriptional activator STAT3. xref Studies had shown that EGFR could promote the phosphorylation and expression of STAT3, which contributes to tumor development. xref , xref For instance, miRNA-7 inhibits the expression of EGFR and thus leads to abnormal activation of STAT3 and expression. xref In this study, we found that EGFR was overexpressed in various kinds of NSCLC cells, compared to healthy lung tissue cells."
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"To determine whether CaM is implicated in EGFR mediated Src activation in EGFR overexpressing A431 cells, we performed experiments in the presence of the CaM antagonist N-(6-aminohexyl)-5-chloro-1-naphthalenesulfonamide (W-7) and the less potent but not inactive inhibitor N-(4-aminobutyl)-2-naphthalenesulfonamide (W-12)."
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"PTPN12 has been reported to interact with and inhibit other kinases, including MAPK, protein tyrosine kinase 2 (PTK2), ERB-B2 receptor tyrosine kinase 2 (ERBB2), EGFR, hepatocyte growth factor receptor (MET), activated CDC42 kinase 1 (ACK1), and the SRC family nonreceptor tyrosine kinase LCK."
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"In this study we demonstrated that in gefitinib-deprived HCC827 GR5 cells STAT5 was further phosphorylated at the phosphorylation site Tyr 694 residue which is known to be associated with EGFR-dependent Src activation [ xref ], whereas the JAK phosphorylation site Tyr 699 was not modified."
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"Biochemically, we showed that the close proximity of IL-17R and EGFR allows the adaptor protein Act1 to recruit c-Src for IL-17A-induced EGFR transactivation and subsequent ERK5 activation, which plays a critical role in IL-17A-dependent expansion of Lrig1 + stem cells, epidermal hyperplasia, and skin tumorigenesis."
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"As Src family kinases are involved in EGFR transactivation via ADAM metalloproteases, we propose a mechanism by which glucose activates ChREBP and Src to promote HB-EGF gene expression and HB-EGF membrane shedding, respectively, and subsequently EGFR downstream signaling and cell cycle activation (XREF_FIG)."
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"XREF_BIBR, XREF_BIBR EGFR homodimerization and heterodimerization with other EGFR family members leads to enhanced tyrosine kinase activity of the receptor complexes and activation of multiple signaling pathways, such as mitogen activated protein kinase (MAPK), p38 MAPK, phosphatidylinositol 3 '-kinase (PI3K), Src, Crk and Nck."
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"The pioneering work of Dr Rous led to the discovery of receptor tyrosine kinases (RTK) including c-Kit, VEGFR, PDGFR, EGFR, FGFR and IGFR, which also activate Src; and specific RTK inhibitors (imatinib, sunitinib, sorafenib) and Src inhibitors (dasatanib, bosutinib) [ xref , xref , xref , xref ]."
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"The pioneering work of Dr Rous led to the discovery of receptor tyrosine kinases (RTK) including c-Kit, VEGFR, PDGFR, EGFR, FGFR and IGFR, which also activate Src; and specific RTK inhibitors (imatinib, sunitinib, sorafenib) and Src inhibitors (dasatanib, bosutinib) [10,11,12,13]."
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"It has been reported that upon activation of beta 2 - or alpha 2 -adrenergic receptors, Src specific Y845-EGFR site could be activated by direct phosphorylation of the EGFR receptor (ligand independent) [XREF_BIBR, XREF_BIBR] or by indirect, ligand dependent mechanisms, as recently reported [XREF_BIBR]."
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"Resistant cells obtained from patients treated with ceritinib revealed activation of the EGFR, mitogen activated protein (MAP) kinase, and SRC pathways, and the cells were sensitive to combination therapies with inhibitors for EGFR, MAP kinase-ERK kinase (MEK), and SRC [XREF_BIBR]."
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"The pathological EGFR expression in glioblastoma is proposed to activate all intracellular mitogenic signalling (PI3K/AKT/mTOR, Raf/MEK/ERK, and Src and STAT pathways) by interacting not only through Grb, JAKs, Src, PI3K, phospholipase C-delta, SH1, SH2, and STAT but also through ErbB2 and ErB3 transactivation [XREF_BIBR, XREF_BIBR]."
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"EGFR stimulation increased the association of PLCgamma-1 and c-Src in HNSCC cells expressing c-Src or PLCgamma-1, but not in dominant negative c-Src or PLCgamma-1 expressing cells suggesting that c-Src and PLCgamma-1 may interact with each other downstream of EGFR in HNSCC cells (XREF_FIG)."
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"P2Y (2) R activation induces the phosphorylation of the epidermal growth factor receptor (EGFR), a response dependent upon the presence of a SH3 binding domain in the intracellular C terminus of the P2Y (2) R that promotes Src binding and transactivation of EGFR, a pathway that regulates the proliferation of cortical astrocytes."
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"Kinases, which were phosphorylated to a lower degree in the presence of CSMD1 in statistically significant manner included : epidermal growth factor receptor (EGFR), Akt1/2/3, glycogen synthase kinase-3 (GSK-3), extracellular signal regulated kinases (ERK1/2), mitogen- and stress activated kinases-1 and -2 (MSK 1/2), oncogene p53, focal adhesion kinase (FAK), SRC kinases Lyn and Yes, as well as STAT2."
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"For example, EGFRvIII phosphorylates SFKs, which further activate dedicator of cytokinesis 1 (DOCK1). xref DOCK1 plays critical roles in mediating cell growth and migration, contributing to the pro-tumorigenic function of EGFRvIII. xref , xref EGFRvIII can also increase phosphorylation of DOCK1 through PKA. xref EGFRvIII forms a complex with the cytokine receptor OSMR, which regulates the EGFRvIII-STAT3 signaling axis. xref Additionally, SFK activation promotes mitochondrial localization of EGFRvIII, and increases cell survival under low glucose conditions. xref Moreover, EGFRvIII activates hepatocyte growth factor receptor (MET), which in-turn drives STAT3. xref , xref EGFRvIII also activates c-SRC, which promotes secretion of vascular endothelial growth factor (VEGF) and angiogenesis. xref Phosphorylation of these kinases further activates downstream signaling pathways and contributes to tumor progression."