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Título: | Comprehensive conventional and molecular cytogenetic characterization of B-CPAP, a human papillary thyroid carcinoma-derived cell line |
Autor: | Dettori, T.; García, Juan L. CSIC ORCID CVN ; Hernández, Jesús M. CSIC ORCID | Fecha de publicación: | 2004 | Editor: | Elsevier | Citación: | Cancer Genetics and Cytogenetics 151(2): 171-177 (2004) | Resumen: | Cell lines derived from different thyroid tumor histotypes are useful for the in vitro study of both the phenotypic and genetic features of these cancers. Although karyotypic changes are known to be associated with thyroid lesions, the chromosome patterns of only a few cell lines have been published. Herein, we report an extensive conventional and molecular cytogenetic investigation of the human papillary thyroid carcinoma derived cell line B-CPAP. Morphological studies and expression of tumor markers in this cell line have been reported previously, but no detailed characterization on the origin of the chromosome markers is available. B-CPAP cells have a rather stable hypertriploid karyotype, with chromosome polysomies and structural chromosome abnormalities featuring whole chromosome arm imbalances. Chromosome banding revealed a main clone with nine chromosome markers, and fluorescence in situ hybridization (FISH) with whole chromosome paint (wcp), partial chromosome paint (pcp), and centromeric probes clarifyied their origin. The use of centromeric probes provided accurate refinement of the rearrangements classified as whole-arm translocations by banding and FISH with wcp probes. Both chromosomal and array-based comparative genomic hybridization experiments confirmed the cytogenetic characterization of this cell line. Moreover, the use of fluorescence immunophenotyping and interphase cytogenetics as a tool for the investigation of neoplasms (FICTION) technique, which simultaneously shows nuclear ploidy and cytoplasmic immunofluorescence, detailed the oncocytic feature of the cells. Intriguingly, despite their origin, they lack most of the features expressed in papillary thyroid tumor cells and have a chromosomal pattern reminiscent of that of a subgroup of oncocytic malignant thyroid tumors. © 2004 Elsevier Inc. All rights reserved. | URI: | http://hdl.handle.net/10261/59954 | DOI: | 10.1016/j.cancergencyto.2003.09.023 | Identificadores: | doi: 10.1016/j.cancergencyto.2003.09.023 issn: 0165-4608 |
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