Tumor-Derived Extracellular Fragments of Receptor Protein Tyrosine Phosphatases (RPTPs) as Cancer Molecular Diagnostic Tools

ISSN: 1875-5992 (Online)
ISSN: 1871-5206 (Print)

Volume 17, 14 Issues, 2017

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Anti-Cancer Agents in Medicinal Chemistry

Formerly: Current Medicinal Chemistry - Anti-Cancer Agents

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Michelle Prudhomme
Institut de Chimie de Clermont-Ferrand
Université Clermont Auvergne

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Tumor-Derived Extracellular Fragments of Receptor Protein Tyrosine Phosphatases (RPTPs) as Cancer Molecular Diagnostic Tools

Anti-Cancer Agents in Medicinal Chemistry, 11(1): 133-140.

Author(s): Sonya E.L. Craig and Susann M Brady-Kalnay.

Affiliation: Department of Molecular Biology and Microbiology, School of Medicine, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106-4960, USA.


Receptor protein tyrosine phosphatases (RPTPs) are involved in many cellular processes, including the regulation of adhesion, migration and cellular signaling. Many RPTPs are putative tumor suppressors because of the transcriptional and translational changes observed in their expression during tumorigenesis. Recently, RPTPs were shown to be post-translationally regulated during tumorigenesis by proteolysis in a manner similar to proteolysis of the Notch receptor. There is accumulating evidence that proteolysis of RPTPs influence their cellular function and that RPTP fragments may function as oncogenes. By exploiting what is known about RPTP ligand binding domains and crystal structures of ligand-RPTP interfaces, we describe novel molecular diagnostics that have been or can be developed to identify tumor margins and target tumor tissues.


Cell-cell interactions, cell-cell adhesion, receptor protein tyrosine phosphatase, RPTPs, cancer, Tumor-derived, Notch receptor, CAMs, Laminin/nidogen, ECD, ADAM.

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Article Details

Volume: 11
Issue Number: 1
First Page: 133
Last Page: 140
Page Count: 8
DOI: 10.2174/187152011794941244

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