CiRS-7 promotes growth and metastasis of esophageal squamous cell carcinoma via regulation of miR-7/HOXB13.

CiRS-7 promotes growth and metastasis of esophageal squamous cell carcinoma via regulation of miR-7/HOXB13.
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DOI:
10.1038/s41419-018-0852-y
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发表时间:
2018-08-06
影响因子:
9
通讯作者:
Fang MH
Fang MH
中科院分区:
生物学1区
文献类型:
--
作者:
Li RC;Ke S;Meng FK;Lu J;Zou XJ;He ZG;Wang WF;Fang MH

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环状RNA ciRS-7已被报道参与多种肿瘤的发病机制,包括胃癌和结直肠癌。然而,ciRS-7在食管鳞状细胞癌(ESCC)中的作用尚不清楚。在本研究中,我们发现与匹配的正常组织相比,在ESCC癌组织中,ciRS-7的表达显著上调,并与患者生存率低相关。ciRS-7的过表达取消了miR-7的肿瘤抑制作用,包括体外细胞增殖、迁移和侵袭以及体内肿瘤生长和肺转移。在机制上,ciRS-7充当miR-7的海绵,并重新激活其下游hoxb13介导的NF-κB/p65通路。总之,我们的研究结果证明了ciRS-7如何诱导ESCC的恶性进展,并且ciRS-7可能作为这种致命疾病的新的预后标志物和治疗靶点。
The circular RNA ciRS-7 has been reported to be involved in the pathogenesis of various tumors, including gastric and colorectal cancer. However, the role of ciRS-7 in esophageal squamous cell carcinoma (ESCC) remains unsolved. In this study, we found that the ciRS-7 expression was significantly upregulated in ESCC cancer tissues compared with matched normal tissues and associated with poor patient survival. Overexpression of ciRS-7 abrogated the tumor-suppressive roles of miR-7 including cell proliferation, migration and invasion in vitro as well as tumor growth and lung metastasis in vivo. Mechanistically, ciRS-7 functioned as the sponge of miR-7 and reactivated its downstream HOXB13-mediated NF-κB/p65 pathway. Conclusively, our findings demonstrate how ciRS-7 induces malignant progression of ESCC and that ciRS-7 may act as a novel prognostic marker and therapeutic target for this lethal disease.
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