A novel AKT3 mutation in melanoma tumours and cell lines.

A novel AKT3 mutation in melanoma tumours and cell lines.
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DOI:
10.1038/sj.bjc.6604637
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发表时间:
2008-10-21
影响因子:
8.8
通讯作者:
Mills, G. B.
Mills, G. B.
中科院分区:
医学1区
文献类型:
--
作者:
Davies, M. A.;Stemke-Hale, K.;Tellez, C.;Calderone, T. L.;Deng, W.;Prieto, V. G.;Lazar, A. J. F.;Gershenwald, J. E.;Mills, G. B.
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最近,在乳腺癌,卵巢和结直肠癌中报道了AKT1(E17K)的罕见激活突变。但是,在任何癌症谱系中尚未鉴定出Akt2或Akt3中的类似激活突变。为了确定黑色素瘤中AKT E17K突变的患病率,是最具侵略性的皮肤癌形式,我们分析了137个人类黑色素瘤标本和65种人类黑色素瘤细胞系,用于先前描述的AKT1激活突变,以及Akt2和Akt3中的类似突变。我们确定了一个AKT1 E17K突变。值得注意的是,在两个黑色素瘤(来自一名患者)和两个细胞系中检测到了先前未识别的Akt3 E17K突变。在人黑色素瘤细胞中表达时,AKT3 E17K突变会导致AKT激活。这代表了黑色素瘤中AKT突变的第一个报告,以及任何人类癌症谱系中AKT3突变的初始鉴定。我们还确定了自然存在的Akt E17K突变的第一个已知的人类细胞系。
Recently, a rare activating mutation of AKT1 (E17K) has been reported in breast, ovarian, and colorectal cancers. However, analogous activating mutations in AKT2 or AKT3 have not been identified in any cancer lineage. To determine the prevalence of AKT E17K mutations in melanoma, the most aggressive form of skin cancer, we analysed 137 human melanoma specimens and 65 human melanoma cell lines for the previously described activating mutation of AKT1, and for analogous mutations in AKT2 and AKT3. We identified a single AKT1 E17K mutation. Remarkably, a previously unidentified AKT3 E17K mutation was detected in two melanomas (from one patient) as well as two cell lines. The AKT3 E17K mutation results in activation of AKT when expressed in human melanoma cells. This represents the first report of AKT mutations in melanoma, and the initial identification of an AKT3 mutation in any human cancer lineage. We have also identified the first known human cell lines with naturally occurring AKT E17K mutations.
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