Abstract
Pancreatic ribonuclease (RNase) is a secreted enzyme critical for host defense. We discover an intrinsic RNase function, serving as a ligand for epidermal growth factor receptor (EGFR), a member of receptor tyrosine kinase (RTK), in pancreatic ductal adenocarcinoma (PDAC). The closely related bovine RNase A and human RNase 5 (angiogenin [ANG]) can trigger oncogenic transformation independently of their catalytic activities via direct association with EGFR. Notably, high plasma ANG level in PDAC patients is positively associated with response to EGFR inhibitor erlotinib treatment. These results identify a role of ANG as a serum biomarker that may be used to stratify patients for EGFR-targeted therapies, and offer insights into the ligand-receptor relationship between RNase and RTK families. Wang et al. identify angiogenin (ANG) as a ligand for epidermal growth factor receptor (EGFR). ANG-mediated EGFR activation can trigger oncogenic transformation, and high ANG in the plasma of pancreatic adenocarcinoma patients positively correlates with response to the EGFR inhibitor erlotinib.
Original language | English (US) |
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Pages (from-to) | 752-769.e8 |
Journal | Cancer Cell |
Volume | 33 |
Issue number | 4 |
DOIs | |
State | Published - Apr 9 2018 |
Externally published | Yes |
Keywords
- EGFR inhibitor
- EGFR ligand
- PDAC
- angiogenin
- erlotinib
- receptor tyrosine kinase
- ribonuclease
- serum biomarker
ASJC Scopus subject areas
- Oncology
- Cancer Research