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将DNA标记物定位到与精神分裂症共分离的5号染色体区域的缺失作图。

Deletion mapping of DNA markers to a region of chromosome 5 that cosegregates with schizophrenia.

作者信息

Gilliam T C, Freimer N B, Kaufmann C A, Powchik P P, Bassett A S, Bengtsson U, Wasmuth J J

机构信息

Department of Psychiatry, College of Physicians and Surgeons, Columbia University, New York, New York 10032.

出版信息

Genomics. 1989 Nov;5(4):940-4. doi: 10.1016/0888-7543(89)90138-9.

Abstract

Two independent lines of evidence support the localization of a schizophrenia susceptibility locus to the proximal long arm of chromosome 5. A partial trisomy of chromosome 5 (5q11.2-q13.3) cosegregates with the disorder in a Canadian family of Chinese descent, and DNA markers from proximal 5q cosegregate with schizophrenia (plus related disorders) in families of British and Icelandic descent. We constructed a human:hamster hybrid cell line (HHW 1064) whose only human complement is a chromosome 5 that is missing the trisomic region associated with schizophrenia. In combination with a "matched" cell hybrid (HHW 105) containing an intact chromosome 5, we physically mapped DNA markers relative to the trisomy. "Schizophrenia-linked" DNA markers p105-153Ra (D5S39) and p105-599Ha (D5S76) map within the trisomy and proximal to the 5q11.2 breakpoint, respectively. The hybrid cell lines HHW 105 and HHW 1064 together provide a means to identify and generate syntenic DNA markers to further investigate the location of a schizophrenia locus.

摘要

两条独立的证据线索支持精神分裂症易感基因座定位于5号染色体长臂近端。在一个华裔加拿大家庭中,5号染色体部分三体(5q11.2-q13.3)与该疾病共分离,并且来自5q近端的DNA标记在英裔和冰岛裔家庭中与精神分裂症(以及相关疾病)共分离。我们构建了一个人-仓鼠杂交细胞系(HHW 1064),其唯一的人类成分是一条缺失与精神分裂症相关的三体区域的5号染色体。结合一个含有完整5号染色体的“匹配”细胞杂种(HHW 105),我们相对于三体对DNA标记进行了物理定位。“精神分裂症相关”DNA标记p105-153Ra(D5S39)和p105-599Ha(D5S76)分别定位于三体内部且靠近5q11.2断点的位置。杂交细胞系HHW 105和HHW 1064共同提供了一种识别和生成同线DNA标记的方法,以进一步研究精神分裂症基因座的位置。

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