DEK expression in melanocytic lesions.

DEK expression in melanocytic lesions.
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黑素细胞病变中的DEK表达。

DOI:
10.1016/j.humpath.2010.10.022
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发表时间:
2011-07
期刊:
影响因子:
3.3
通讯作者:
Ma, Linglei
Ma, Linglei
中科院分区:
医学3区
文献类型:
--
作者:
Kappes, Ferdinand;Khodadoust, Michael S.;Yu, Limin;Kim, David S. L.;Fullen, Douglas R.;Markovitz, David M.;Ma, Linglei

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恶性黑色素瘤的诊断提出了临床挑战,主要依赖于组织病理学评价。先前的研究表明,DEK癌基因(一种染色质结合因子)的表达增加可能有助于黑色素瘤的发展,并且可能是黑色素瘤进展中的常见事件。在这里,我们研究了DEK表达的免疫组织化学共147个黑素细胞病变,包括普通痣,发育不良痣,斯皮茨痣,原位黑色素瘤,原发性侵袭性黑色素瘤,转移性黑色素瘤。大多数良性痣(普通痣、发育不良痣和Spitz痣)DEK染色阴性或弱,49例中仅4例显示强染色。与良性痣相似,原位黑色素瘤也表现出低水平的DEK表达。相反,DEK在原发性侵袭性黑色素瘤中的表达显著高于良性痣(p<0.0001)。此外,DEK在深部黑色素瘤(Breslow深度> 1mm)和转移性黑色素瘤中的表达与浅表黑色素瘤(Breslow深度≤ 1mm)相比显著增加(p<0.05)。我们的研究结果表明,DEK过表达可能是一个常见的事件,在侵袭性黑色素瘤,进一步增强DEK表达可能与收购的不祥的功能,如深真皮浸润和转移。这些数据表明DEK在黑色素瘤进展中的作用。
The diagnosis of malignant melanoma presents a clinical challenge and relies principally on histopathological evaluation. Previous studies have indicated that increased expression of the DEK oncogene, a chromatin-bound factor, could contribute to the development of melanoma and may be a frequent event in melanoma progression. Here, we investigated DEK expression by immunohistochemistry in a total of 147 melanocytic lesions, including ordinary nevi, dysplastic nevi, Spitz nevi, melanoma in situ, primary invasive melanomas, and metastatic melanomas. Most benign nevi (ordinary, dysplastic and Spitz nevi) were negative or exhibited weak staining for DEK with only 4 of 49 cases showing strong staining. Similar to benign nevi, melanoma in situ also demonstrated low levels of DEK expression. In contrast, the expression of DEK in primary invasive melanomas was significantly higher than benign nevi (p<0.0001). Moreover, DEK expression was significantly increased in deep melanomas (Breslow depth > 1mm) and metastatic melanomas as compared to superficial melanomas (Breslow depth ≤ 1mm) (p<0.05). Our findings indicate that DEK overexpression may be a frequent event in invasive melanomas, and further augmentation of DEK expression may be associated with the acquisition of ominous features such as deep dermal invasion and metastasis. These data suggest a role of DEK in melanoma progression.
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