Molecular Cloning of 19p13 Breakpoint Region in Infantile Leukemia with t(11;19)(q23;p13) Translocation

Molecular Cloning of 19p13 Breakpoint Region in Infantile Leukemia with t(11;19)(q23;p13) Translocation
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婴儿白血病 t(11;19)(q23;p13) 易位 19p13 断点区域的分子克隆

DOI:
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发表时间:
1993
期刊:
Japanese journal of cancer research : Gann
影响因子:
--
通讯作者:
R. Ueda
R. Ueda
中科院分区:
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文献类型:
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作者:
S. Iida;M. Seto;Kazuhito Yamamoto;H. Komatsu;Y. Akao;S. Nakazawa;Y. Ariyoshi;Toshitada Takahashi;R. Ueda

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我们研究了与婴儿白血病相关的t(11;19)(q23;p13)易位的断裂点区域。用我们以前在所有三个细胞系和三个t(11;19)易位患者白血病样品中分离的11 q23 MLL基因部分cDNA克隆进行Southern印迹分析,表明这些断裂点聚集在探针检测到的8.5kb BamHI种系片段内。为了研究断裂点区域,制备了其中一种细胞系KOCL-33的基因组文库。我们已经分离出了der(19)等位基因,该等位基因含有断裂点,以及在19 p13和11 q23的种系等位基因。使用断裂点附近的19号染色体上的基因组探针,进行Southern印迹分析。另外两个细胞系和三个白血病样本的19 p13断裂点并不位于KOCL-33断裂点的36个碱基内,尽管脉冲场凝胶电泳显示所有三个细胞系的断裂点都位于230个碱基的相同NruI片段上。这些结果表明,在19 p13断裂点不像在t(11;19)易位的11 q23聚集。
We studied the breakpoint regions involved in t(11;19)(q23;p13) translocation associated with infantile leukemias. Southern blot analysis with the partial cDNA clone for the MLL gene at 11q23 which we had isolated previously detected gene rearrangements in all three cell lines and three leukemia samples from the patients with t(11;19) translocation, indicating that these breakpoints were clustered within the 8.5 kb BamHI germline fragment detected by the probe. To study the breakpoint region, a genomic library of one of the cell lines, KOCL‐33, was made. We have isolated the der(19) allele containing the breakpoint as well as the germline alleles at 19p13 and 11q23. Using the genomic probes on chromosome 19 near the breakpoint, Southern blot analysis was performed. The breakpoints at 19p13 of the two other cell lines and the three leukemia samples were not located within 36 kilobases of the KOCL‐33 breakpoint, although pulsed‐field gel electrophoresis showed that the breakpoints of all three cell lines were on the same NruI fragment of 230 kilobases. These results showed that the breakpoints at 19p13 were not clustered like those at 11q23 in t(11;19) translocation.
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影响因子: 14.9
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影响因子: 11.1
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DOI: --
发表时间: 1991
期刊: Cancer research
影响因子: 11.2
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