KIF15 promotes pancreatic cancer proliferation via the MEK-ERK signalling pathway.

KIF15 promotes pancreatic cancer proliferation via the MEK-ERK signalling pathway.
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KIF15 通过 MEK-ERK 信号通路促进胰腺癌增殖。

DOI:
10.1038/bjc.2017.165
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发表时间:
2017-07-11
影响因子:
8.8
通讯作者:
Jiang J
Jiang J
中科院分区:
医学1区
文献类型:
--
作者:
Wang J;Guo X;Xie C;Jiang J

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胰腺癌是高度恶性的,其特征是快速且不受控制的生长。虽然胰腺癌中涉及的一些重要调控网络已经确定,但癌症相关基因尚未完全确定。我们在七对匹配的胰腺癌和正常胰腺组织样本中筛选了可能控制胰腺癌增殖的基因。我们在体外和体内检测了胰腺癌组织中 KIF15 的表达以及 KIF15 对细胞增殖的影响。研究了 KIF15 促进细胞增殖的机制。 mRNA 微阵列和功能分析鉴定出 22 个可能在胰腺癌增殖中发挥重要作用的基因。高内涵 siRNA 筛选评估了沉默这 22 个基因是否会影响胰腺癌的增殖。值得注意的是,与其余 22 个基因相比,沉默 KIF15 表现出最有效的增殖抑制作用。 KIF15 在人类胰腺癌组织中表达上调,较高的 KIF15 表达水平与较短的患者生存时间相关。 KIF15 的上调促进了胰腺癌的生长。 KIF15 上调细胞周期蛋白 D1、CDK2 和磷酸-RB,并促进胰腺癌细胞的 G1/S 转变。 KIF15 上调通过增加 p-MEK 和 p-ERK 水平激活 MEK-ERK 信号传导。 MEK-ERK 抑制剂成功抑制细胞周期进程,PD98059 在体内和体外阻断 KIF15 介导的胰腺癌增殖。这项研究确定 KIF15 是促进胰腺癌增殖的关键调节因子,拓宽了我们对 KIF15 在肿瘤发生中功能的理解。
Pancreatic cancer is highly malignant and characterised by rapid and uncontrolled growth. While some of the important regulatory networks involved in pancreatic cancer have been determined, the cancer relevant genes have not been fully identified. We screened genes that may control proliferation in pancreatic cancer in seven pairs of matched pancreatic cancer and normal pancreatic tissue samples. We examined KIF15 expression in pancreatic cancer tissues and the effect of KIF15 on cell proliferation in vitro and in vivo. The mechanisms underlying KIF15 promotion of cell proliferation were investigated. mRNA microarray and functional analysis identified 22 genes that potentially play an important role in the proliferation of pancreatic cancer. High-content siRNA screening evaluated whether silencing these 22 genes affected proliferation of pancreatic cancer. Notably, silencing KIF15 exhibited the most potent inhibition of proliferation compared with the rest of the 22 genes. KIF15 was upregulated in human pancreatic cancer tissues, and higher KIF15 expression levels correlated with shorter patient survival times. Upregulation KIF15 promoted pancreatic cancer growth. KIF15 upregulated cyclin D1, CDK2, and phospho-RB and also promoted G1/S transition in pancreatic cancer cells. KIF15 upregulation activated MEK–ERK signalling by increasing p-MEK and p-ERK levels. MEK–ERK inhibitors successfully inhibited cell cycle progression, and PD98059 blocked KIF15-mediated pancreatic cancer proliferation in vivo and in vitro. This study identified KIF15 as a critical regulator that promotes pancreatic cancer proliferation, broadening our understanding of KIF15 function in tumorigenesis.
DOI: 10.1107/s1399004713028721
发表时间: 2014-01
期刊: Acta crystallographica. Section D, Biological crystallography
影响因子: --
作者:
Klejnot M;Falnikar A;Ulaganathan V;Cross RA;Baas PW;Kozielski F
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影响因子: 0.4
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