Recurrent MALAT1-GLI1 oncogenic fusion and GLI1 up-regulation define a subset of plexiform fibromyxoma.

Recurrent MALAT1-GLI1 oncogenic fusion and GLI1 up-regulation define a subset of plexiform fibromyxoma.
复制标题

DOI:
10.1002/path.4730
复制
发表时间:
2016-07
期刊:
The Journal of pathology
影响因子:
--
通讯作者:
Debiec-Rychter M
Debiec-Rychter M
中科院分区:
其他
文献类型:
--
作者:
Spans L;Fletcher CD;Antonescu CR;Rouquette A;Coindre JM;Sciot R;Debiec-Rychter M

文献摘要

参考文献

被引文献

相似文献

丛状纤维粘液瘤是一种罕见的肿瘤,在2010年WHO消化系统肿瘤分类中被正式确认为良性间叶性胃肿瘤中的一个独特实体。这些肿瘤的特征性生长方式为多结节/丛状,组织学上包含由温和的肌纤维母细胞型梭形细胞组成的多细胞区域,这些梭形细胞嵌入丰富的粘液样基质中,富含毛细血管。到目前为止,这些肿瘤的分子和/或遗传特征尚不清楚。在这里,我们描述了复发易位t(11;12)(q11;q13)涉及MALAT 1(转移相关肺腺癌转录本1)长非编码基因和GLI 1(胶质瘤相关癌基因同源物1)基因在这些肿瘤的一个亚组。在我们的索引情况下的融合转录本的存在下,证实了基因组DNA的聚合酶链反应,然后通过桑格测序。我们发现,截短的GLI 1蛋白过表达,并保留其转录激活其靶基因的能力。开发了一种特异性FISH测定法来检测福尔马林固定的石蜡包埋材料中的新型MALAT 1-GLI 1易位。这导致了另外两例融合病例的鉴定,以及两例GLI 1基因多体性病例的鉴定。最后,免疫组化显示,GLI 1蛋白仅在GLI 1/12 q13基因组改变的病例中过表达。总之,通过复发性MALAT 1-GLI 1易位或GLI 1上调的GLI 1过表达描绘了具有激活的Sonic Hedgehog信号通路的丛状纤维粘液瘤的病理学上不同的亚组。
Plexiform fibromyxomas are rare neoplasms, being officially recognized as a distinct entity among benign mesenchymal gastric tumors in the 2010 WHO Classification of Tumors of the Digestive System. Characteristically, these tumors have a multinodular/plexiform growth pattern, and histologically contain variably cellular areas of bland myofibroblastic type spindle cells embedded in an abundant myxoid matrix, rich in capillary-type vessels. As of yet, the molecular and/or genetic features of these tumors are unknown. Here, we describe a recurrent translocation t(11;12)(q11;q13) involving the MALAT1 (metastasis associated lung adenocarcinoma transcript 1) long noncoding gene and the GLI1 (glioma-associated oncogene homologue 1) gene in a subgroup of these tumors. The presence of the fusion transcript in our index case was confirmed using polymerase chain reaction on genomic DNA followed by Sanger sequencing. We showed that the truncated GLI1 protein is overexpressed and retains its capacity to transcriptionally activate its target genes. A specific FISH assay was developed to detect the novel MALAT1-GLI1 translocation in formalin-fixed paraffin-embedded material. This resulted in the identification of two additional cases with this fusion, and two cases with polysomy of the GLI1 gene. Finally, immunohistochemistry revealed that the GLI1 protein is exclusively overexpressed in those cases that harbor GLI1/12q13 genomic alterations. In conclusion, overexpression of GLI1 through a recurrent MALAT1-GLI1 translocation or GLI1 upregulation delineates a pathogenically distinct subgroup of plexiform fibromyxomas with activated Sonic Hedgehog signaling pathway.
DOI: 10.15252/embj.201489213
发表时间: 2015-01-13
期刊: The EMBO journal
影响因子: --
作者:
Infante P;Mori M;Alfonsi R;Ghirga F;Aiello F;Toscano S;Ingallina C;Siler M;Cucchi D;Po A;Miele E;D'Amico D;Canettieri G;De Smaele E;Ferretti E;Screpanti I;Uccello Barretta G;Botta M;Botta B;Gulino A;Di Marcotullio L
通讯作者: Di Marcotullio L
DOI: 10.1073/pnas.0931430100
发表时间: 2003-05-13
影响因子: 11.1
作者:
Davis, IJ;Hsi, BL;Fisher, DE
通讯作者: Fisher, DE
DOI: 10.1053/j.gastro.2012.09.061
发表时间: 2013-01
期刊: Gastroenterology
影响因子: 29.4
作者:
Pelczar P;Zibat A;van Dop WA;Heijmans J;Bleckmann A;Gruber W;Nitzki F;Uhmann A;Guijarro MV;Hernando E;Dittmann K;Wienands J;Dressel R;Wojnowski L;Binder C;Taguchi T;Beissbarth T;Hogendoorn PC;Antonescu CR;Rubin BP;Schulz-Schaeffer W;Aberger F;van den Brink GR;Hahn H
通讯作者: Hahn H
DOI: 10.1097/pas.0b013e3181ae666a
发表时间: 2009-11-01
影响因子: 5.6
作者:
Miettinen, Markku;Makhlouf, Hala R.;Lasota, Jerzy
通讯作者: Lasota, Jerzy
DOI: 10.1002/path.1546
发表时间: 2004-04-01
影响因子: 7.3
作者:
Debiec-Rychter, M;Wasag, B;Sciot, R
通讯作者: Sciot, R