PMID- 15172756 OWN - NLM STAT- MEDLINE DCOM- 20040713 LR - 20061115 IS - 0165-4608 (Print) IS - 0165-4608 (Linking) VI - 151 IP - 2 DP - 2004 Jun TI - Comprehensive conventional and molecular cytogenetic characterization of B-CPAP, a human papillary thyroid carcinoma-derived cell line. PG - 171-7 AB - 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 clarified 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. FAU - Dettori, T AU - Dettori T AD - Dipartimento di Scienze e Tecnologie Biomediche, Universita di Cagliari, Cittadella Universitaria, Monserrato, Cagliari 09042, Italy. FAU - Frau, D V AU - Frau DV FAU - Garcia, J L AU - Garcia JL FAU - Pierantoni, G AU - Pierantoni G FAU - Lee, C AU - Lee C FAU - Hernandez, J M AU - Hernandez JM FAU - Fusco, A AU - Fusco A FAU - Morton, C C AU - Morton CC FAU - Vanni, R AU - Vanni R LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Cancer Genet Cytogenet JT - Cancer genetics and cytogenetics JID - 7909240 SB - IM EIN - Cancer Genet Cytogenet. 2004 Nov;155(1):93-4 MH - Carcinoma, Papillary/*genetics MH - Cell Line, Tumor MH - Humans MH - In Situ Hybridization, Fluorescence MH - Karyotyping MH - Thyroid Neoplasms/*genetics EDAT- 2004/06/03 05:00 MHDA- 2004/07/14 05:00 CRDT- 2004/06/03 05:00 PHST- 2003/05/28 00:00 [received] PHST- 2003/09/05 00:00 [revised] PHST- 2003/09/24 00:00 [accepted] PHST- 2004/06/03 05:00 [pubmed] PHST- 2004/07/14 05:00 [medline] PHST- 2004/06/03 05:00 [entrez] AID - S0165460803004370 [pii] AID - 10.1016/j.cancergencyto.2003.09.023 [doi] PST - ppublish SO - Cancer Genet Cytogenet. 2004 Jun;151(2):171-7. doi: 10.1016/j.cancergencyto.2003.09.023.