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Cancers 2016, 8(7), 68;

Ptk7 and Mcc, Unfancied Components in Non-Canonical Wnt Signaling and Cancer

Agency for Science Technology and Research (A*STAR) Institute of Medical Biology, 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
Division of Science, Yale-NUS College, Singapore 138610, Singapore
Department of Biological Sciences, Centre for Translational Medicine, NUS Yong Loo Lin School of Medicine, National University of Singapore, 14 Medical Drive, Level 10 South, 10-02M, Singapore 117599, Singapore
Author to whom correspondence should be addressed.
Academic Editors: Renée van Amerongen and Walter Birchmeier
Received: 20 May 2016 / Revised: 29 June 2016 / Accepted: 7 July 2016 / Published: 16 July 2016
(This article belongs to the Special Issue Wnt Signaling in Cancer)
View Full-Text   |   Download PDF [1423 KB, uploaded 16 July 2016]   |  


Human development uses a remarkably small number of signal transduction pathways to organize vastly complicated tissues. These pathways are commonly associated with disease in adults if activated inappropriately. One such signaling pathway, Wnt, solves the too few pathways conundrum by having many alternate pathways within the Wnt network. The main or “canonical” Wnt pathway has been studied in great detail, and among its numerous downstream components, several have been identified as drug targets that have led to cancer treatments currently in clinical trials. In contrast, the non-canonical Wnt pathways are less well characterized, and few if any possible drug targets exist to tackle cancers caused by dysregulation of these Wnt offshoots. In this review, we focus on two molecules—Protein Tyrosine Kinase 7 (Ptk7) and Mutated in Colorectal Cancer (Mcc)—that do not fit perfectly into the non-canonical pathways described to date and whose roles in cancer are ill defined. We will summarize work from our laboratories as well as many others revealing unexpected links between these two proteins and Wnt signaling both in cancer progression and during vertebrate and invertebrate embryonic development. We propose that future studies focused on delineating the signaling machinery downstream of Ptk7 and Mcc will provide new, hitherto unanticipated drug targets to combat cancer metastasis. View Full-Text
Keywords: Wnt; Ptk7; Mcc; PCP; cancer Wnt; Ptk7; Mcc; PCP; cancer

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Dunn, N.R.; Tolwinski, N.S. Ptk7 and Mcc, Unfancied Components in Non-Canonical Wnt Signaling and Cancer. Cancers 2016, 8, 68.

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