TBX2 over-expression promotes nasopharyngeal cancer cell proliferation and invasion.

TBX2 over-expression promotes nasopharyngeal cancer cell proliferation and invasion.
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TBX2过表达促进鼻咽癌细胞增殖和侵袭

DOI:
10.18632/oncotarget.17084
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发表时间:
2017-08-08
期刊:
影响因子:
--
通讯作者:
Cao C
Cao C
中科院分区:
其他
文献类型:
--
作者:
Lv Y;Si M;Chen N;Li Y;Ma X;Yang H;Zhang L;Zhu H;Xu GY;Wu GP;Cao C

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TBX2 是 T 盒转录因子家族的成员。本文研究了其在鼻咽癌 (NPC) 细胞中的表达和潜在生物学功能。我们发现,与邻近正常组织相比,多个人鼻咽癌组织中 TBX2 mRNA 和蛋白表达显着升高。通过靶向 siRNA 敲低 TBX2 可显着抑制 NPC 细胞(CNE-1 和 HONE-1 系)的增殖和侵袭。同时,TBX2敲除还诱导G1期细胞周期停滞。在分子水平上,我们发现在上述鼻咽癌细胞中敲低TBX2后,包括p21、p27、张力蛋白同源磷酸酶(PTEN)和E-Cadherin在内的多种抑癌基因的表达显着增加。总的来说,我们的结果表明 TBX2 过表达可能通过沉默几个关键肿瘤抑制基因来促进鼻咽癌细胞增殖和侵袭。
TBX2 is a member of the T box transcription factor family. Its expression and potential biological functions in nasopharyngeal cancer (NPC) cells are studied here. We showed that TBX2 mRNA and protein expression was significantly elevated in multiple human NPC tissues, as compared with that in adjacent normal tissues. Knockdown of TBX2 by targeted-siRNA significantly inhibited proliferation and invasion of NPC cells (CNE-1 and HONE-1 lines). Meanwhile, TBX2 knockdown also induced G1-phase cell cycle arrest. At the molecular level, we discovered that expressions of several tumor suppressor genes, including p21, p27, phosphatase with tensin homology (PTEN) and E-Cadherin, were increased dramatically after TBX2 knockdown in above NPC cells. Collectively, our results imply that TBX2 over-expression promotes NPC cell proliferation and invasion, possibly via silencing several key tumor suppressor genes.
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