Abstract
INTRODUCTION: S100a4 is a calcium-binding protein belonging to the family of S100-proteins, highly expressed in different stromal cell types. S100A4 has been reported as a prognostic marker in colorectal cancer in association with tumour progression and metastasis.
METHODS: In this study, we analysed the in vivo role of S100a4 in intestinal tumour initiation and progression using different transgenic and knockout mouse models.
RESULTS: We found that genetic ablation or overexpression of S100a4 in both Apc- and Smad4-mutant mice do not affect tumour initiation in the intestinal tract. In contrast, S100a4 epithelial overexpression in Apc1638N/+/KRASV12G mice increases the dissemination of intestinal tumour cells to the liver, in agreement with its role in tumour metastasis. Moreover, we report a novel role for S100a4 in desmoid formation where S100a4 deficiency results in a significant reduction of the tumour burden characteristic of the Apc1638N model. In agreement with these results, S100a4 appears to be co-expressed together with mesenchymal stem cell (MSC) markers in desmoid tumours from Apc1638N/+ mice, as well as from sporadic and hereditary human desmoids.
CONCLUSION: Our data provide the first report on the in vivo role of S100a4 in intestinal tumourigenesis and describe a new role for S100a4 in the aetiology of desmoids formation.
Original language | English |
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Pages (from-to) | 114-124 |
Number of pages | 11 |
Journal | European Journal of Cancer (Oxford, England : 1990) |
Volume | 68 |
DOIs | |
Publication status | Published - 14 Oct 2016 |
Keywords
- Adenomatous Polyposis Coli Protein/genetics
- Animals
- Carcinogenesis/genetics
- Colorectal Neoplasms/genetics
- Fibromatosis, Aggressive/genetics
- Gene Knock-In Techniques
- Humans
- Intestinal Neoplasms/genetics
- Mice
- Mice, Knockout
- Mutation
- Proto-Oncogene Proteins p21(ras)/genetics
- S100 Calcium-Binding Protein A4/genetics
- Smad4 Protein/genetics
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Yaser Atlasi
- School of Medicine, Dentistry and Biomedical Sciences - Senior Lecturer
- Patrick G Johnston Centre for Cancer Research
Person: Academic