Inhibition of the miR-192/215-Rab11-FIP2 axis suppresses human gastric cancer progression.

Inhibition of the miR-192/215-Rab11-FIP2 axis suppresses human gastric cancer progression.
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抑制 miR-192/215-Rab11-FIP2 轴可抑制人胃癌进展

DOI:
10.1038/s41419-018-0785-5
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发表时间:
2018-07-13
影响因子:
9
通讯作者:
Jin Z
Jin Z
中科院分区:
生物学1区
文献类型:
--
作者:
Zhang X;Peng Y;Huang Y;Deng S;Feng X;Hou G;Lin H;Wang J;Yan R;Zhao Y;Fan X;Meltzer SJ;Li S;Jin Z

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不到一个世纪前,胃癌(GC)是全世界最常见的癌症。尽管在手术、化疗和放射治疗方面取得了进展,但GC仍然是全球第三大癌症杀手。这一事实突出了对更好的诊断生物标记物和更有效的治疗靶点的需要。Rab11-FIP2是Rab11家族相互作用蛋白中的一员,具有潜在的肿瘤抑制功能。然而,Rab11-FIP2在胃癌发生中的作用尚不清楚。在本研究中,我们证明了Rab11-FIP2在胃癌组织中下调,并构成了已知的癌-miRs miR-192/215的靶点。我们还表明,miR-192/215对Rab11-FIP2的调节在功能上参与了GC相关的生物学活动。最后,miR-192/215抑制Rab11-FIP2影响了GC细胞极性的建立和紧密连接的形成。总之,miR-192/215-Rab11-FIP2轴似乎代表了GC进展的新的分子机制,同时为进一步研究GC的诊断和治疗提供了一条有前途的途径。
Less than a century ago, gastric cancer (GC) was the most common cancer throughout the world. Despite advances in surgical, chemotherapeutic, and radiotherapeutic treatment, GC remains the number 3 cancer killer worldwide. This fact highlights the need for better diagnostic biomarkers and more effective therapeutic targets. RAB11-FIP2, a member of the Rab11 family of interacting proteins, exhibits potential tumor suppressor function. However, involvement of RAB11-FIP2 in gastric carcinogenesis is yet to be elucidated. In this study, we demonstrated that RAB11-FIP2 was downregulated in GC tissues and constituted a target of the known onco-miRs, miR-192/215. We also showed that functionally, Rab11-FIP2 regulation by miR-192/215 is involved in GC-related biological activities. Finally, RAB11-FIP2 inhibition by miR-192/215 affected the establishment of cell polarity and tight junction formation in GC cells. In summary, this miR-192/215–Rab11-FIP2 axis appears to represent a new molecular mechanism underlying GC progression, while supplying a promising avenue of further research into diagnosis and therapy of GC.
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