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首页> 外文期刊>Cytometry: The Journal of the Society for Analytical Cytology >Comparative genomic hybridization study of nasal-type NK/T-cell lymphoma
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Comparative genomic hybridization study of nasal-type NK/T-cell lymphoma

机译:鼻型NK / T细胞淋巴瘤的基因组杂交比较研究

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Background: Nasal-type NWT-cell lymphoma is a rare type of non-Hodgkin's lymphoma, The genetic changes associated with pathogenesis have not been well defined, This study investigates the nonrandom genetic alteration of nasal-type NWT-cell lymphoma, Methods: Nine cases were studied, Comparative genomic hybridization (CGH) was carried out using fresh tumor tissues of seven nasal-type NWT-cell lymphomas, To complement the data by CGH, loss of heterozygosity (LOH) of chromosomes 6q, 1p, and 17p using polymorphic markers and p53 gene mutation by polymerase chain reaction-single-strand conformation polymorphism (PCR-SSCP) were analyzed. Results: The DNA copy number changes of seven nasal-type NWT-cell lymphomas were gains on chromosomes 2q(5), 13q(4), 10q(3), 21q(2), 3q(2), 5q(2), and 17q(2), and losses involving chromosomes 1p(4), 17p(4), 12q(3), 13q(2), and 6q(1), One of six cases informative for at least two markers for chromosome 6q showed LOH at D6S300, D6S1639, D6S261, D6S407, and D6S292, Two cases showing loss of 1p and 17q by CGH revealed LOH at D1S214, D1S503, and D17S559. P53 mutation was detected in exon 8 in one of nine cases, Conclusion: Frequent DNA losses at 1p, 17p, and 12q and gains at 2q, 13q, and 10q suggested that these regions could be targets for further molecular genetic analysis to investigate tumor suppressor genes or oncogenes associated with tumorigenesis of NWT-cell lymphoma. Infrequent alteration of 6q contrary to previous studies raises doubt about an implication of 6q loss in the pathogenesis of early-stage NWT-cell lymphoma, Further studies on more defined cases are required to verify their association. (C) 2001 Wiley-Liss, Inc. [References: 27]
机译:背景:鼻型NWT细胞淋巴瘤是一种罕见的非霍奇金淋巴瘤,与发病机制相关的遗传变化尚未明确,本研究调查了鼻型NWT细胞淋巴瘤的非随机遗传改变,方法:九对7例鼻型NWT细胞淋巴瘤的新鲜肿瘤组织进行了比较基因组杂交(CGH),为补充CGH的数据,利用多态性对6q,1p和17p染色体的杂合性(LOH)进行了缺失。分析了聚合酶链反应-单链构象多态性(PCR-SSCP)标记和p53基因突变。结果:7个鼻型NWT细胞淋巴瘤的DNA拷贝数变化在染色体2q(5),13q(4),10q(3),21q(2),3q(2),5q(2),和17q(2),以及涉及染色体1p(4),17p(4),12q(3),13q(2)和6q(1)的丢失,表明至少有两个标记6q的六例病例之一显示D6S300,D6S1639,D6S261,D6S407和D6S292的LOH,两例显示CGH丢失1p和17q的情况显示D1S214,D1S503和D17S559的LOH。在9例病例中,有8例在外显子8中检测到P53突变。结论:DNA在1p,17p和12q处频繁丢失,并在2q,13q和10q处增加,提示这些区域可能成为进一步分子遗传学分析以研究肿瘤抑制因子的目标NWT细胞淋巴瘤的肿瘤发生相关基因或致癌基因。与以前的研究相反,很少改变6q引起人们怀疑6q缺失在早期NWT细胞淋巴瘤发病机理中的意义,需要对更明确的病例进行进一步研究以验证其关联。 (C)2001 Wiley-Liss,Inc. [参考:27]

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