Allelic loss at chromosome 3p characterizes clear cell phenotype of renal cell carcinoma.

Allelic loss at chromosome 3p characterizes clear cell phenotype of renal cell carcinoma.
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3p 染色体等位基因缺失是肾细胞癌透明细胞表型的特征。

DOI:
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发表时间:
1991
期刊:
影响因子:
11.2
通讯作者:
Osamu Yoshida
Osamu Yoshida
中科院分区:
医学1区
文献类型:
--
作者:
Osamu Ogawa;Y. Kakehi;Katsuhiko Ogawa;Masahiro Koshiba;Taketoshi Sugiyama;Osamu Yoshida

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用7种多态探针对35例日本散发性肾细胞癌(RCC)患者的3p染色体杂合性缺失的发生率进行了评估。3p上杂合性缺失的总频率为53%,代表了30个信息性病例中的16个。分析肾细胞癌组织病理表型与3p缺失的关系,透明细胞型肿瘤中杂合性缺失的发生率(75%,12/16)显著高于颗粒细胞型肿瘤(14%,1/7)(P<0.01)。此外,三种混合细胞型肿瘤,主要由颗粒细胞成分组成,没有显示染色体3p基因座的丢失。这些发现可能支持染色体3p杂合性缺失是散发性肾细胞癌发生中的非随机事件的观点,并提示这种类型的染色体重排是肾细胞癌透明细胞表型所特有的。
Incidence of the loss of heterozygosity on chromosome 3p was evaluated using 7 polymorphic probes in 35 Japanese patients with sporadic renal cell carcinoma (RCC). Overall frequency of the loss of heterozygosity on 3p was 53%, representing 16 of 30 informative cases. Examination of the relationship between histopathological phenotypes of RCC and incidence of the 3p loss revealed that the loss of heterozygosity in clear cell type tumors (75%, 12 of 16) was significantly (P less than 0.01) more frequent than that in granular cell type tumors (14%, 1 of 7). In addition, three mixed cell type tumors, consisting predominantly of granular cell components, showed no loss of chromosome 3p loci. These findings may support the notion that the loss of heterozygosity on chromosome 3p is a nonrandom event in the tumorigenesis of sporadic RCC, and suggest that this type of chromosomal rearrangement is specific to the clear cell phenotype of RCC.
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