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PTTG1促进结肠癌SW480细胞侵袭和迁移的作用机制

姚宇宙, 易文, 罗云春, 谭超

姚宇宙, 易文, 罗云春, 谭超. PTTG1促进结肠癌SW480细胞侵袭和迁移的作用机制[J]. 肿瘤防治研究, 2016, 43(11): 948-953. DOI: 10.3971/j.issn.1000-8578.2016.11.006
引用本文: 姚宇宙, 易文, 罗云春, 谭超. PTTG1促进结肠癌SW480细胞侵袭和迁移的作用机制[J]. 肿瘤防治研究, 2016, 43(11): 948-953. DOI: 10.3971/j.issn.1000-8578.2016.11.006
YAO Yuzhou, YI Wen, LUO Yunchun, TAN Chao. Effect of PTTG1 Expression on Invasion and Migration of Colon Cancer Cell SW480 and Its Possible Mechanism[J]. Cancer Research on Prevention and Treatment, 2016, 43(11): 948-953. DOI: 10.3971/j.issn.1000-8578.2016.11.006
Citation: YAO Yuzhou, YI Wen, LUO Yunchun, TAN Chao. Effect of PTTG1 Expression on Invasion and Migration of Colon Cancer Cell SW480 and Its Possible Mechanism[J]. Cancer Research on Prevention and Treatment, 2016, 43(11): 948-953. DOI: 10.3971/j.issn.1000-8578.2016.11.006

PTTG1促进结肠癌SW480细胞侵袭和迁移的作用机制

基金项目: 

湖北省自然科学基金 2014CFB307

详细信息
    作者简介:

    姚宇宙(1979-),男,本科,主治医师,主要从事肛肠疾病的研究

    通讯作者:

    谭超,E-mail: yczxyytanchao@sina.com

  • 中图分类号: R735.3+5

Effect of PTTG1 Expression on Invasion and Migration of Colon Cancer Cell SW480 and Its Possible Mechanism

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  • 摘要:
    目的 

    研究垂体肿瘤转化基因 1(pituitary tumor transforming gene 1,PTTG1)过表达促进人结肠癌细胞SW480侵袭和迁移作用及其可能机制。

    方法 

    采用脂质体转染法将pcDNA3.1(+)-PTTG1及空载pcDNA3.1(+)转染人结肠癌SW480细胞,G418法筛选阳性克隆。Western blot和Real-time PCR法鉴定稳定过表达PTTG1细胞株建立。Transwell小室法检测细胞侵袭和迁移能力,Western blot检测MMP2、MMP9、E-cadherin、Vimentin和Snail的表达。

    结果 

    (1)成功获得稳定高表达PTTG1的SW480克隆细胞株PTTG1-SW480;(2)过表达PTTG1基因后,SW480细胞侵袭和迁移能力增强,MMP2和MMP9表达升高,上皮间质转化(epithelial-mesenchymal transition,EMT)标记分子E-cadherin表达降低,Vimentin和Snail的表达升高,差异均有统计学意义(P<0.01);(3)过表达PTTG1基因后,SW480细胞中PI3K/AKT信号活化增强,使用LY29400干预后,抑制细胞侵袭、迁移和EMT,E-cadherin表达上调、Vimentin和Snail的表达下调,差异均有统计学意义(P<0.01)。

    结论 

    PTTG1基因过表达可能通过活化PI3K/AKT信号诱导SW480细胞EMT发生,发挥促进SW480侵袭和迁移作用;提示PTTG1蛋白可能成为结肠癌治疗的一个潜在靶点。

     

    Abstract:
    Objective 

    To investigate the effect of over-expression of pituitary tumor transforming gene 1 (PTTG1) on the invasion and migration of human colon cancer cells SW480 and its possible mechanism.

    Methods 

    Both pcDNA3.1(+)-PTTG1and pcDNA3.1(+) plasmids were separately transfected into human colon cancer cell line SW480 by liposome transfection method and G418 was used to screen positive clones. Real-time PCR and Western blot were used to asses the stably over-expressed PTTG1 in PTTG1-SW480. The abilities of migration and invasion of PTTG1-SW480 cells were assayed by Transwell chambers and Western blot was used to detect the expression of MMP2,MMP9,E-cadherin,Vimentin and Snail.

    Results 

    (1) The cloned cells PTTG1-SW480 with PTTG1 over-expression were successfully obtained; (2) After PTTG1 over-expression,the abilities of migration and invasion of SW480 cells were enhanced,the expression of MMP2 and MMP9 were up-regulated,Vimentin and Snail expression were up-regulated,and E-cadherin expression was down-regulated (all P<0.01) ; (3) The signaling pathway of PI3K/AKT activation was enhanced in PTTG1-SW480 cells. Interfering with LY29400,the abilities of migration and invasion and EMT of PTTG1-SW480 cells were prevented,the expression of E-cadherin was up-regulated and Vimentin and Snail expression were down-regulated (all P<0.01) .

    Conclusion 

    PTTG1 over-expression may promote SW480 cells migration and invasion through activating PI3K/AKT pathway to induce EMT. PTTG1 may become a potential target for colon cancer treatment.

     

  • 图  1   PTTG1稳定表达SW480细胞的建立

    Figure  1   PTTG1 over-expression in SW480 cells

    图  2   PTTG1促进细胞侵袭与迁移

    Figure  2   PTTG1 promoted SW480 cells invasion and migration

    图  3   PTTG1促进SW480细胞中MMP2和MMP9的表达

    Figure  3   PTTG1 up-regulated MMP2 and MMP9 expression in SW480 cells

    图  4   PTTG1促进SW480细胞上皮间质转化

    Figure  4   PTTG1 promoted epithelial-mesenchymal transition(EMT) of SW480 cells

    图  5   PTTG1促进SW480细胞PI3K/AKT信号活化

    Figure  5   PTTG1 enhanced activation of signal pathway of PI3K/AKT in SW480 cells

    图  6   PTTG1通过活化PI3K/AKT信号促进SW480细胞侵袭与迁移

    Figure  6   PTTG1 promoted SW480 cells invasion and migration through activating signal pathway of PI3K/AKT

    图  7   PTTG1通过活化PI3K/AKT信号促进SW480细胞EMT

    Figure  7   PTTG1 promoted EMT of SW480 cells through activating signal pathway of PI3K/AKT

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出版历程
  • 收稿日期:  2015-12-17
  • 修回日期:  2016-05-18
  • 网络出版日期:  2024-02-04
  • 刊出日期:  2016-10-31

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