A transposon-based analysis of gene mutations related to skin cancer development.
J Invest Dermatol
; 133(1): 239-48, 2013 Jan.
Article
en En
| MEDLINE
| ID: mdl-22832494
Nonmelanoma skin cancer (NMSC) is by far the most frequent type of cancer in humans. NMSC includes several types of malignancies with different clinical outcomes, the most frequent being basal and squamous cell carcinomas. We have used the Sleeping Beauty transposon/transposase system to identify somatic mutations associated with NMSC. Transgenic mice bearing multiple copies of a mutagenic Sleeping Beauty transposon T2Onc2 and expressing the SB11 transposase under the transcriptional control of regulatory elements from the keratin K5 promoter were treated with TPA, either in wild-type or Ha-ras mutated backgrounds. After several weeks of treatment, mice with transposition developed more malignant tumors with decreased latency compared with control mice. Transposon/transposase animals also developed basal cell carcinomas. Genetic analysis of the transposon integration sites in the tumors identified several genes recurrently mutated in different tumor samples, which may represent novel candidate cancer genes. We observed alterations in the expression levels of some of these genes in human tumors. Our results show that inactivating mutations in Notch1 and Nsd1, among others, may have an important role in skin carcinogenesis.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Neoplasias Cutáneas
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Elementos Transponibles de ADN
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Carcinoma Basocelular
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Carcinoma de Células Escamosas
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Transformación Celular Neoplásica
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Mutación
Límite:
Animals
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Humans
Idioma:
En
Revista:
J Invest Dermatol
Año:
2013
Tipo del documento:
Article
País de afiliación:
España
Pais de publicación:
Estados Unidos