STAT-mediated EGFR signaling in cancer - PubMed (original) (raw)
Review
. 2007 Oct 1;102(2):311-9.
doi: 10.1002/jcb.21475.
Affiliations
- PMID: 17661350
- DOI: 10.1002/jcb.21475
Review
STAT-mediated EGFR signaling in cancer
Kelly M Quesnelle et al. J Cell Biochem. 2007.
Abstract
The epidermal growth factor receptor (EGFR) and signal transducers and activators of transcription (STATs) are commonly expressed and activated in many malignancies. EGFR is an upstream activator of several pathways involved in tumor progression, and STATs activate selected genes involved in oncogenesis. There are several different mechanisms by which STAT proteins can mediate intracellular EGFR signaling, including direct activation of STATs by EGFR binding and indirect activation of STATs through Src-mediated EGFR signaling. EGFR likely activates STAT in a manner distinctive from other mechanisms of STAT activation; STAT5 can be phosphorylated in an EGF-dependent manner at unique sites, conferring novel functions. Cumulative evidence suggests that targeting EGFR signaling pathways at several levels may demonstrate synergistic therapeutic effects compared with targeting the upstream receptor alone. Thus, methods to inhibit EGFR in conjunction with oncogenic STATs may represent a novel therapeutic strategy for cancers characterized by upregulation of EGFR signaling.
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