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A transcript map of the chromosome 19q-arm glioma tumor suppressor region.

机译:染色体19q-臂神经胶质瘤肿瘤抑制区域的转录本图谱。

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摘要

Allelic loss of the chromosome 19q arm is a frequent event in human diffuse gliomas, suggesting that it contains a tumor suppressor gene. Recent deletion mapping studies have broadly implicated a 1.6-Mb interval between D19S241E and D19S596, with a limited subset of tumors, suggesting that the region may be as narrow as 150 kb. Focusing on this smaller interval, we have used cDNA selection, exon amplification, and genomic sequencing to identify three novel transcripts (EHD2, GLTSCR1, and GLTSCR2) and to map two known genes (SEPW1 and CRX). A partial transcript map of 19 transcripts and two EST markers has been constructed for the 1.6-Mb interval D19S241E-D19S596. Ten of these transcripts, including the 5 mapped to the 150-kb deletion interval, have been examined for alterations in a panel of gliomas with allelic loss of 19q. Tumor-specific alterations have not been identified in the transcripts examined thus far. Collectively, these data should facilitate subsequent efforts to identify and characterize the remaining transcripts in the 1.6-Mb interval. Copyright 2000 Academic Press.
机译:染色体19q臂的等位基因缺失是人类弥漫性神经胶质瘤中的常见事件,表明它含有抑癌基因。最近的缺失作图研究广泛地暗示了D19S241E和D19S596之间存在1.6 Mb的间隔,且肿瘤子集有限,这表明该区域可能窄至150 kb。针对这个较小的间隔,我们使用了cDNA选择,外显子扩增和基因组测序来鉴定三个新的转录本(EHD2,GLTSCR1和GLTSCR2)并绘制两个已知基因(SEPW1和CRX)。已针对1.6 Mb间隔D19S241E-D19S596构建了19个转录本和两个EST标记的部分转录图。已经检查了这些转录物中的十个,包括定位到150-kb缺失间隔的五个转录本,其中一组神经胶质瘤的等位基因缺失为19q。迄今为止,在所检查的转录本中尚未鉴定出肿瘤特异性改变。总体而言,这些数据应有助于随后的工作,以识别和表征1.6 Mb间隔内的其余转录本。版权所有2000学术出版社。

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