E‐cadherin can limit the transforming properties of activating β‐catenin mutations

Huels, D. J. et al. (2015) E‐cadherin can limit the transforming properties of activating β‐catenin mutations. EMBO Journal, 34(18), pp. 2321-2333. (doi:10.15252/embj.201591739) (PMID:26240067) (PMCID:PMC4570519)

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Abstract

Wnt pathway deregulation is a common characteristic of many cancers. Only colorectal cancer predominantly harbours mutations in APC, whereas other cancer types (hepatocellular carcinoma, solid pseudopapillary tumours of the pancreas) have activating mutations in β‐catenin (CTNNB1). We have compared the dynamics and the potency of β‐catenin mutations in vivo. Within the murine small intestine (SI), an activating mutation of β‐catenin took much longer to achieve Wnt deregulation and acquire a crypt‐progenitor cell (CPC) phenotype than Apc or Gsk3 loss. Within the colon, a single activating mutation of β‐catenin was unable to drive Wnt deregulation or induce the CPC phenotype. This ability of β‐catenin mutation to differentially transform the SI versus the colon correlated with higher expression of E‐cadherin and a higher number of E‐cadherin:β‐catenin complexes at the membrane. Reduction in E‐cadherin synergised with an activating mutation of β‐catenin resulting in a rapid CPC phenotype within the SI and colon. Thus, there is a threshold of β‐catenin that is required to drive transformation, and E‐cadherin can act as a buffer to sequester mutated β‐catenin.

Item Type:Articles
Additional Information:Grant support: supported by Cancer Research UK grant C596/A17196, and DJH is funded by the European Union Seventh Framework Programme FP7/2007–2013 under grant agreement number 278568. FS is funded by the North West Cancer Research Fund CR700. OJS is funded by an ERC investigator grant COLONCAN.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Radulescu, Dr Sorina and Ceteci, Dr Fatih and Ridgway, Dr Rachel and Campbell, Mr Andrew and Kalna, Dr Gabriela and Sansom, Professor Owen
Authors: Huels, D. J., Ridgway, R. A., Radulescu, S., Leushacke, M., Campbell, A. D., Biswas, S., Leedham, S., Serra, S., Chetty, R., Moreaux, G., Parry, L., Matthews, J., Song, F., Hedley, A., Kalna, G., Ceteci, F., Reed, K. R., Meniel, V. S., Maguire, A., Doyle, B., Söderberg, O., Barker, N., Watson, A., Larue, L., Clarke, A. R., and Sansom, O. J.
College/School:College of Medical Veterinary and Life Sciences > Institute of Cancer Sciences
Journal Name:EMBO Journal
Publisher:EMBO Press
ISSN:0261-4189
ISSN (Online):1460-2075
Published Online:03 August 2015
Copyright Holders:Copyright © 2015 Cancer Research UK Beatson Institute.
First Published:First published in EMBO Journal 34(18):2321-2333
Publisher Policy:Reproduced under a Creative Commons license

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