Genetic alterations and protein expression of KIT and PDGFRA in serous ovarian carcinoma.

Genetic alterations and protein expression of KIT and PDGFRA in serous ovarian carcinoma.
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浆液卵巢癌中试剂盒和PDGFRA的遗传改变和蛋白质表达。

DOI:
10.1038/sj.bjc.6602252
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发表时间:
2004-12-13
影响因子:
8.8
通讯作者:
Butzow, R
Butzow, R
中科院分区:
医学1区
文献类型:
--
作者:
Lassus, H;Sihto, H;Leminen, A;Nordling, S;Joensuu, H;Nupponen, NN;Butzow, R

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KIT 和 PDGFRA 是受体酪氨酸激酶,可被小分子酪氨酸激酶抑制剂(特别是甲磺酸伊马替尼)特异性失活。在卵巢癌中,KIT 和 PDGFRA 蛋白的表达已被记录,但表达的频率和分子背景尚不清楚。我们通过免疫组织化学分析了 522 例浆液性卵巢癌中 KIT 和 PDGFRA 的表达,并通过变性高效液相色谱法分别分析了 125 例和 187 例浆液性卵巢癌中 KIT 和 PDGFRA 的突变情况。未检测到 KIT 或 PDGFRA 突变。在 12% 的癌症中检测到 KIT 表达:10% 的病例低表达,2% 的病例高表达。使用正常浆液性上皮作为参考,在 12% 的癌症中检测到 PDGFRA 表达减少,在 13% 的癌症中检测到表达增加。 KIT 和 PDGFRA 表达均与高肿瘤分级、高增殖指数和不良患者预后相关。通过荧光原位杂交,在KIT高表达的癌中未发现KIT扩增,但有两例显示4号染色体相对增益。总之,没有发现KIT或PDGFRA突变,但浆液性卵巢癌的一个子集显示出这些蛋白的过度表达,这与侵袭性肿瘤特征相关。
KIT and PDGFRA are receptor tyrosine kinases that can be specifically inactivated by small-molecule tyrosine kinase inhibitors, notably imatinib mesylate. In ovarian carcinoma, expression of KIT and PDGFRA protein has been documented, but the frequency and the molecular background of expression are poorly known. We analysed the expression of KIT and PDGFRA by immunohistochemistry in 522 serous ovarian carcinomas, and mutations of KIT and PDGFRA by denaturing high-performance liquid chromatographyin 125 and 187 serous ovarian carcinomas, respectively. No mutations of KIT or PDGFRA were detected. KIT expression was detected in 12% of carcinomas: low expression in 10% and high expression in 2% of cases. Using normal serous epithelium as a reference, decreased PDGFRA expression was detected in 12% and increased expression in 13% of carcinomas. Both KIT and PDGFRA expression were associated with high tumour grade, high proliferation index and poor patient outcome. By fluorescence in situ hybridisation, no KIT amplification was found in carcinomas with high KIT expression, but two cases showed a relative gain of chromosome 4. In conclusion, no mutations of KIT or PDGFRA were found, but a subset of serous ovarian carcinoma showed overexpression of the proteins, which was associated with aggressive tumour characteristics.
DOI: 10.1056/nejmoa040938
发表时间: 2004-05-20
影响因子: 158.5
作者:
Lynch, TJ;Bell, DW;Haber, DA
通讯作者: Haber, DA
DOI: 10.1200/jco.2003.04.190
发表时间: 2003-12-01
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DOI: 10.1038/labinvest.3780260
发表时间: 2001-04-01
影响因子: 5
作者:
Lassus, H;Laitinen, MPE;Butzow, R
通讯作者: Butzow, R
DOI: 10.1093/oxfordjournals.aje.a008937
发表时间: 1996-08-15
影响因子: 5
作者:
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DOI: 10.1038/nm0798-844
发表时间: 1998-07-01
期刊: NATURE MEDICINE
影响因子: 82.9
作者:
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通讯作者: Kallioniemi, OP