Detection of three novel translocations and specific common chromosomal break sites in malignant melanoma by spectral karyotyping.

Detection of three novel translocations and specific common chromosomal break sites in malignant melanoma by spectral karyotyping.
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通过光谱核型分析检测恶性黑色素瘤中的三种新易位和特定常见染色体断裂位点。

DOI:
10.1002/gcc.1162
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发表时间:
2001
期刊:
Genes, chromosomes & cancer.
影响因子:
--
通讯作者:
Reynolds,SH
Reynolds,SH
中科院分区:
--
文献类型:
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作者:
Sargent,LM;Nelson,MA;Lowry,DT;Senft,JR;Jefferson,AM;Ariza,ME;Reynolds,SH

文献摘要

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恶性黑色素瘤细胞中的染色体畸变已报告使用标准染色体显带分析和比较基因组杂交。为了确定标记染色体和易位是难以表征的标准显带分析,15个早期传代恶性黑色素瘤细胞系进行了检查,使用光谱核型分析。所有15个肿瘤细胞系均丢失全部或部分1 p和10 q。染色体臂4p(12/15)、6 q(12/15)、9 p(15/15)、12 p(13/15)、12 q(13/15)、13 q(11/15)和19 q(14/15)上的物质丢失是其次最常见的事件。染色体臂1 q(11/15)、6p(13/15)和20 q11(14/15)也有增加。有趣的是,我们在4/15个肿瘤中鉴定出了der(12)t(12;20)(q15;q11)、der(19)t(10;19)(q23;q13)和der(12)t(12;19)(q13;q13)易位。检测到三个反复出现的易位,涉及四个最常见的断点。在黑色素瘤中识别反复出现的易位和独特的染色体断裂点将有助于识别在肿瘤形成过程中重要的基因。© 2001 Wiley利斯公司
Chromosomal aberrations in malignant melanoma cells have been reported using standard chromosome banding analysis and comparative genomic hybridization. To identify marker chromosomes and translocations that are difficult to characterize by standard banding analysis, 15 early passage malignant melanoma cell lines were examined using spectral karyotyping. All 15 tumor cell lines had lost all or part of 1p and 10q. Losses of material on chromosome arms 4p (12/15), 6q (12/15), 9p (15/15), 12p (13/15), 12q (13/15), 13q (11/15), and 19q (14/15) were the next most frequent events. Gain of chromosome arms 1q (11/15), 6p (13/15), and 20q11 (14/15) was also observed. Interestingly, we identified translocations der(12)t(12;20)(q15;q11), der(19)t(10;19)(q23;q13), and der(12)t(12;19)(q13;q13) in 4/15 tumors. Three recurring translocations involving four of the most frequent break points were detected. The identification of recurring translocations and unique chromosome break points in melanoma will aid in the identification of the genes that are important in the neoplastic process. © 2001 Wiley‐Liss, Inc.