Circular RNA F-circEA-2a derived from EML4-ALK fusion gene promotes cell migration and invasion in non-small cell lung cancer.

Circular RNA F-circEA-2a derived from EML4-ALK fusion gene promotes cell migration and invasion in non-small cell lung cancer.
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DOI:
10.1186/s12943-018-0887-9
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发表时间:
2018-09-20
期刊:
影响因子:
37.3
通讯作者:
Peng Y
Peng Y
中科院分区:
医学1区
文献类型:
--
作者:
Tan S;Sun D;Pu W;Gou Q;Guo C;Gong Y;Li J;Wei YQ;Liu L;Zhao Y;Peng Y

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致瘤融合基因棘皮微管相关蛋白样4-间变性淋巴瘤激酶(EML4-ALK)有助于非小细胞肺癌(NSCLC)亚群的肿瘤发生。最近,我们证明了F-circEA-4a,一种由EML4-ALK变体3b (v3b)的反向剪接产生的促肿瘤环状RNA (circRNA),是一种新的非小细胞肺癌液体活检生物标志物。然而,EML4-ALK基因产生的circrna及其在NSCLC中的作用尚未得到很好的表征。在这里,我们确定了另一个eml4 - alk -v3b衍生的circRNA F-circEA-2a,在连接位点含有“AA”(而不是F-circEA-4a中的“AAAA”)基序。F-circEA-2a主要位于细胞质中,促进细胞迁移和侵袭,但对细胞增殖影响不大。此外,F-circEA-2a存在于肿瘤中,而不存在于EML4-ALK融合基因NSCLC患者的血浆中,进一步支持F-circEA-4a对EML4-ALK阳性NSCLC的显著诊断价值。本研究发现了一种由EML4-ALK融合基因产生的新型致癌circRNA,突出了circRNA在EML4-ALK阳性NSCLC发展中的关键作用。本文的在线版本(10.1186/s12943-018-0887-9)包含补充资料,仅供授权用户使用。
Oncogenic fusion gene Echinoderm Microtubule-associated protein-Like 4-Anaplastic Lymphoma Kinase (EML4-ALK) contributes to tumorigenesis of a subset of non-small cell lung cancer (NSCLC). Recently, we demonstrated that F-circEA-4a, a tumor-promoting circular RNA (circRNA) generated from the back-splicing of EML4-ALK variant 3b (v3b), is a novel liquid biopsy biomarker for NSCLC. However, circRNAs produced from EML4-ALK gene and their roles in NSCLC are not well-characterized. Here, we identify another EML4-ALK-v3b-derived circRNA, F-circEA-2a, harboring “AA” (rather than “AAAA” in F-circEA-4a) motif at the junction site. F-circEA-2a mainly locates in the cytoplasm and promotes cell migration and invasion, but has little effect on cell proliferation. Moreover, F-circEA-2a exists in tumor, but not in the plasma of NSCLC patients with EML4-ALK fusion gene, further supporting the significant diagnostic value of F-circEA-4a for EML4-ALK-positive NSCLC. This work finds a novel oncogenic circRNA generated from EML4-ALK fusion gene, highlighting the pivotal role of circRNA in EML4-ALK-positive NSCLC development. The online version of this article (10.1186/s12943-018-0887-9) contains supplementary material, which is available to authorized users.
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