Identification of candidates for tumor-specific alternative splicing in the thyroid

Identification of candidates for tumor-specific alternative splicing in the thyroid

Autor Guimaraes, G. S. Google Scholar
Latini, FRM Google Scholar
Camacho, C. P. Google Scholar
Maciel, RMB Google Scholar
Dias-Neto, E. Google Scholar
Cerutti, J. M. Google Scholar
Instituição Universidade Federal de São Paulo (UNIFESP)
Universidade de São Paulo (USP)
Resumo Alternative splicing is the differential processing of exon junctions to produce a new transcript variant from one gene. Some aberrant splicing, however, has been shown to be cancer specific. Identification of these specific splice variations will provide important insight into the molecular mechanism of normal cellular physiology as well as the disease processes. To gain knowledge about whether alternative splicing is linked to thyroid tumorigenesis, we used our prediction database to select targets for analysis. Fifteen putatively new alternative splicing isoforms were selected on the basis of their expression in thyroid libraries and/or their origin in genes previously associated with carcinogenesis. Using a set of 66 normal, benign, and malignant thyroid tissue samples, new splicing events were confirmed by RT-PCR for 13 of IS genes (a validation rate of 87%). in addition, new alternative splicing isoforms not predicted by the system and not previously described in public databases were identified. Five genes (PTPN18, AB13BP, PFDN5, SULF2, and ST5) presented new and/or additional unpredicted isoforms differentially expressed between malignant and benign or normal thyroid tissues, confirmed by sequencing. PTPN18, AB13BP and PFDN5 revealed a statistically significant differential splicing profile. in addition, real-time PCR analysis revealed that expression of an alternative PFDN5 variant was higher in malignant lesions than in benign lesions or normal tissues. (c) 2006 Wiley-Liss, Inc.
Idioma Inglês
Data 2006-06-01
Publicado em Genes Chromosomes & Cancer. Hoboken: Wiley-liss, v. 45, n. 6, p. 540-553, 2006.
ISSN 1045-2257 (Sherpa/Romeo, fator de impacto)
Editor Wiley-Blackwell
Extensão 540-553
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:000237336800003

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