LMO1 Synergizes with MYCN to Promote Neuroblastoma Initiation and Metastasis.

LMO1 Synergizes with MYCN to Promote Neuroblastoma Initiation and Metastasis.
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DOI:
10.1016/j.ccell.2017.08.002
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发表时间:
2017-09-11
期刊:
影响因子:
50.3
通讯作者:
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中科院分区:
医学1区
文献类型:
--
作者:
Zhu S;Zhang X;Weichert-Leahey N;Dong Z;Zhang C;Lopez G;Tao T;He S;Wood AC;Oldridge D;Ung CY;van Ree JH;Khan A;Salazar BM;Lummertz da Rocha E;Zimmerman MW;Guo F;Cao H;Hou X;Weroha SJ;Perez-Atayde AR;Neuberg DS;Meves A;McNiven MA;van Deursen JM;Li H;Maris JM;Look AT

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一项全基因组关联研究确定了LMO1,它编码一个LIM结构域的转录辅因子,作为一个神经母细胞瘤易感基因,在高危神经母细胞瘤中作为一个致癌基因发挥作用。在这里,我们发现d β h启动子介导的斑马鱼LMO1表达与MYCN协同作用,增加增生的交感肾上腺前体细胞的增殖,导致神经母细胞瘤发生的潜伏期缩短和潜伏期增加。LMO1的转基因表达还促进了与神经母细胞瘤细胞侵袭和迁移相关的血行播散和远处转移,并提高了影响肿瘤细胞-细胞外基质相互作用的基因的表达水平,包括loxl3、itga2b、itga3和itga5。我们的研究结果提供了体内验证LMO1作为一个重要的癌基因,促进神经母细胞瘤的启动,进展和广泛的转移性传播。LMO1的高表达与神经母细胞瘤(NB)转移有关。Zhu等人表明,LMO1与MYCN协同作用以促进斑马鱼中的NB发展和转移,并且LMO1提高影响肿瘤细胞-细胞外基质相互作用的基因的表达并促进NB细胞侵袭。
A genome-wide association study identified LMO1, which encodes a LIM-domain-only transcriptional cofactor, as a neuroblastoma susceptibility gene that functions as an oncogene in high-risk neuroblastoma. Here we show that dβh promoter-mediated expression of LMO1 in zebrafish synergizes with MYCN to increase the proliferation of hyperplastic sympathoadrenal precursor cells, leading to a reduced latency and increased penetrance of neuroblastomagenesis. The transgenic expression of LMO1 also promoted hematogenous dissemination and distant metastasis, which was linked to neuroblastoma cell invasion and migration, and elevated expression levels of genes affecting tumor cell-extracellular matrix interaction, including loxl3, itga2b, itga3 and itga5. Our results provide in vivo validation of LMO1 as an important oncogene that promotes neuroblastoma initiation, progression, and widespread metastatic dissemination. High expression of LMO1 is associated with neuroblastoma (NB) metastases. Zhu et al. show that LMO1 synergizes with MYCN to promote NB development and metastasis in zebrafish and that LMO1 elevates expression of genes affecting tumor cell-extracellular matrix interaction and promotes NB cell invasion.
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