Abstract

Colorectal cancer (CRC) growth and progression is frequently driven by RAS pathway activation through upstream growth factor receptor activation or through mutational activation of KRAS or BRAF. Here we describe an additional mechanism by which the RAS pathway may be modulated in CRC. PTPRS, a receptor-type protein tyrosine phosphatase, appears to regulate RAS pathway activation through ERK. PTPRS modulates ERK phosphorylation and subsequent translocation to the nucleus. Native mutations in PTPRS, present in ~10% of CRC, may reduce its phosphatase activity while increasing ERK activation and downstream transcriptional signaling.

Details

Title
PTPRS Regulates Colorectal Cancer RAS Pathway Activity by Inactivating Erk and Preventing Its Nuclear Translocation
Author
Davis, Thomas B 1 ; Yang, Mingli 1 ; Schell, Michael J 2 ; Heiman, Wang 1 ; Le, Ma 1 ; Pledger, W Jack 3 ; Yeatman, Timothy J 1 

 Gibbs Cancer Center & Research Institute, Spartanburg, SC, USA 
 Department of Biostatistics and Bioinformatics, Moffitt Cancer Center & Research Institute, Tampa, FL, USA 
 Gibbs Cancer Center & Research Institute, Spartanburg, SC, USA; Department of Molecular Medicine, VCOM, Spartanburg, SC, USA 
Pages
1-16
Publication year
2018
Publication date
Jun 2018
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2056753388
Copyright
© 2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.