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首页> 外文期刊>Genomics >A 6-Mb contig-based comparative gene and linkage map of the rat schwannoma tumor suppressor region at 10q32.3.
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A 6-Mb contig-based comparative gene and linkage map of the rat schwannoma tumor suppressor region at 10q32.3.

机译:一个基于6-Mb重叠群的比较基因和大鼠图谱在10q32.3的神经鞘瘤抑癌区域的连锁图。

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摘要

Frequent genetic aberrations of malignant schwannomas induced by the alkylating agent N-ethyl-N-nitrosourea in hybrids from inbred BD rat strains include allelic imbalances of the telomeric 20 Mb of chromosome 5 (Dis-2) and of the telomeric 5 Mb of chromosome 10q32 (Dis-1) in 59 and 94% of the tumors, respectively. The Dis-1 minimal loss of heterozygosity consensus region extends from D10Rat4 to the telomere and harbors a putative tumor suppressor gene(s). We constructed a 6-Mb BAC/PAC contig containing more than 70 known genes, 18 mapped microsatellites, and further ESTs/reference RNAs. A continuous block of strongly conserved synteny with mouse chromosome 11E2 and human chromosome 17q25.3 was found. Combining the sequence information from the rat and closely related syntenic regions of different mammalian species produces nearly complete gene maps as a basis for a positional candidate approach and gives insight into mammalian genomic evolution.
机译:烷基化剂N-乙基-N-亚硝基脲在近交BD大鼠品系的杂种中诱发的恶性神经鞘瘤的常见遗传畸变包括第5号染色体端粒20 Mb(Dis-2)和第10q32号染色体端粒5 Mb的等位基因失衡。 (Dis-1)分别占59%和94%的肿瘤。 Dis-1杂合性共有区的最小损失从D10Rat4延伸至端粒,并带有推定的抑癌基因。我们构建了一个6 Mb BAC / PAC重叠群,其中包含70多个已知基因,18个定位的微卫星以及其他EST /参考RNA。发现与小鼠染色体11E2和人染色体17q25.3的连续的高度保守同构块。将来自大鼠的序列信息与不同哺乳动物物种的紧密相关的突触区域相结合,可产生几乎完整的基因图谱,作为定位候选方法的基础,并深入了解哺乳动物的基因组进化。

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