An engineered Axl 'decoy receptor' effectively silences the Gas6-Axl signaling axis
Journal Article
·
· Nature Chemical Biology
- Stanford Univ., CA (United States). Dept. of Bioengineering
- Stanford Univ., CA (United States). Stanford University School of Medicine, Dept. of Radiation Oncology
- SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
- Stanford Univ., CA (United States). Dept. of Bioengineering; Stanford Univ., CA (United States). Dept. of Chemical Engineering
Aberrant signaling through the Axl receptor tyrosine kinase has been associated with a myriad of human diseases, most notably metastatic cancer, identifying Axl and its ligand Gas6 as important therapeutic targets. Using rational and combinatorial approaches, we engineered an Axl ‘decoy receptor’ that binds Gas6 with high affinity and inhibits its function, offering an alternative approach from drug discovery efforts that directly target Axl. Four mutations within this high affinity Axl variant caused structural alterations in side chains across the Gas6/Axl binding interface, stabilizing a conformational change on Gas6. When reformatted as an Fc-fusion, the engineered decoy receptor bound to Gas6 with femtomolar affinity, an 80-fold improvement compared to the wild-type Axl receptor, allowing effective sequestration of Gas6 and specific abrogation of Axl signaling. Additionally, increased Gas6 binding affinity was critical and correlative with the ability of decoy receptors to potently inhibit metastasis and disease progression in vivo.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- OSTI ID:
- 1293893
- Journal Information:
- Nature Chemical Biology, Journal Name: Nature Chemical Biology Journal Issue: 11 Vol. 10; ISSN 1552-4450
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Inhibition of the GAS6/AXL pathway augments the efficacy of chemotherapies
Gas6 induces cancer cell migration and epithelial–mesenchymal transition through upregulation of MAPK and Slug
Assignment of the human GAS6 gene to chromosome 13q34 by fluorescene in situ hybridization
Journal Article
·
Sun Nov 27 19:00:00 EST 2016
· Journal of Clinical Investigation
·
OSTI ID:1361055
Gas6 induces cancer cell migration and epithelial–mesenchymal transition through upregulation of MAPK and Slug
Journal Article
·
Fri Apr 26 00:00:00 EDT 2013
· Biochemical and Biophysical Research Communications
·
OSTI ID:22239556
Assignment of the human GAS6 gene to chromosome 13q34 by fluorescene in situ hybridization
Journal Article
·
Tue Oct 31 23:00:00 EST 1995
· Genomics
·
OSTI ID:273474