Epidermal Snail expression drives skin cancer initiation and progression through enhanced cytoprotection, epidermal stem/progenitor cell expansion and enhanced metastatic potential

Expression of the EMT-inducing transcription factor Snail is enhanced in different human cancers. To investigate the in vivo role of Snail during progression of epithelial cancer, we used a mouse model with skin-specific overexpression of Snail. Snail transgenic mice spontaneously developed distinct...

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Veröffentlicht in:Cell death and differentiation 2014-02, Vol.21 (2), p.310-320
Hauptverfasser: De Craene, B, Denecker, G, Vermassen, P, Taminau, J, Mauch, C, Derore, A, Jonkers, J, Fuchs, E, Berx, G
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container_issue 2
container_start_page 310
container_title Cell death and differentiation
container_volume 21
creator De Craene, B
Denecker, G
Vermassen, P
Taminau, J
Mauch, C
Derore, A
Jonkers, J
Fuchs, E
Berx, G
description Expression of the EMT-inducing transcription factor Snail is enhanced in different human cancers. To investigate the in vivo role of Snail during progression of epithelial cancer, we used a mouse model with skin-specific overexpression of Snail. Snail transgenic mice spontaneously developed distinct histological subtypes of skin cancer, such as basal cell carcinoma, squamous cell carcinoma and sebaceous gland carcinoma. Development of sebaceous gland carcinomas strongly correlated with the direct and complete repression of Blimp-1, a central regulator of sebocyte homeostasis. Snail expression in keratinocyte stem cells significantly promotes their proliferation associated with an activated FoxM1 gene expression signature, resulting in a larger pool of Mts24-marked progenitor cells. Furthermore, primary keratinocytes expressing Snail showed increased survival and strong resistance to genotoxic stress. Snail expression in a skin-specific p53-null background resulted in accelerated formation of spontaneous tumours and enhanced metastasis. Our data demonstrate that in vivo expression of Snail results in de novo epithelial carcinogenesis by allowing enhanced survival, expansion of the cancer stem cell pool with accumulated DNA damage, a block in terminal differentiation and increased proliferation rates of tumour-initiating cells.
doi_str_mv 10.1038/cdd.2013.148
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subjects 631/136/142
631/67/1813
631/67/322
692/420/755
Animals
Apoptosis
Biochemistry
Biomedical and Life Sciences
Breast cancer
Cell Biology
Cell Cycle Analysis
Cell death
Cell Differentiation
Cell Proliferation
Disease Progression
Humans
Life Sciences
Medical prognosis
Metastasis
Mice
Mice, Transgenic
Molecular biology
Neoplasm Metastasis - genetics
Neoplasm Metastasis - pathology
Neoplastic Stem Cells - metabolism
Neoplastic Stem Cells - pathology
Oncology
Original Paper
Sebaceous Gland Neoplasms - genetics
Sebaceous Gland Neoplasms - pathology
Skin cancer
Skin Neoplasms - genetics
Skin Neoplasms - pathology
Snail Family Transcription Factors
Stem Cells
Transcription factors
Transcription Factors - genetics
Transgenic animals
Tumors
title Epidermal Snail expression drives skin cancer initiation and progression through enhanced cytoprotection, epidermal stem/progenitor cell expansion and enhanced metastatic potential
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