c-Src drives intestinal regeneration and transformation

Cordero, J. B., Ridgway, R. A., Valeri, N., Nixon, C., Frame, M., Muller, W. J., Vidal, M. and Sansom, O. J. (2014) c-Src drives intestinal regeneration and transformation. EMBO Journal, 33(3), pp. 1474-1491. (doi: 10.1002/embj.201387454)

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Publisher's URL: http://dx.doi.org/10.1002/embj.201387454


The non‐receptor tyrosine kinase c‐Src, hereafter referred to as Src, is overexpressed or activated in multiple human malignancies. There has been much speculation about the functional role of Src in colorectal cancer (CRC), with Src amplification and potential activating mutations in up to 20% of the human tumours, although this has never been addressed due to multiple redundant family members. Here, we have used the adult <i>Drosophila</i> and mouse intestinal epithelium as paradigms to define a role for Src during tissue homeostasis, damage‐induced regeneration and hyperplasia. Through genetic gain and loss of function experiments, we demonstrate that Src is necessary and sufficient to drive intestinal stem cell (ISC) proliferation during tissue self‐renewal, regeneration and tumourigenesis. Surprisingly, Src plays a non‐redundant role in the mouse intestine, which cannot be substituted by the other family kinases Fyn and Yes. Mechanistically, we show that Src drives ISC proliferation through upregulation of EGFR and activation of Ras/MAPK and Stat3 signalling. Therefore, we demonstrate a novel essential role for Src in intestinal stem/progenitor cell proliferation and tumourigenesis initiation <i>in vivo.</i>

Item Type:Articles
Glasgow Author(s) Enlighten ID:Nixon, Mr Colin and Vidal, Dr Marcos and Ridgway, Dr Rachel and Valeri, Dr Nicola and Frame, Mrs Margaret and Cordero, Professor Julia and Sansom, Professor Owen
Authors: Cordero, J. B., Ridgway, R. A., Valeri, N., Nixon, C., Frame, M., Muller, W. J., Vidal, M., and Sansom, O. J.
College/School:College of Medical Veterinary and Life Sciences > School of Cancer Sciences
Journal Name:EMBO Journal
Publisher:EMBO Press
ISSN (Online):1460-2075
Copyright Holders:Copyright © 2014 The Authors
First Published:First published in EMBO Journal
Publisher Policy:Reproduced under a Creative Commons License

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