Role of transgelin-2 in diabetes-associated pancreatic ductal adenocarcinoma.

Role of transgelin-2 in diabetes-associated pancreatic ductal adenocarcinoma.
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Transgelin-2 在糖尿病相关胰腺导管腺癌中的作用

DOI:
10.18632/oncotarget.17519
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发表时间:
2017-07-25
期刊:
影响因子:
--
通讯作者:
Hu Y
Hu Y
中科院分区:
其他
文献类型:
--
作者:
Sun Y;He W;Luo M;Zhou Y;Chang G;Ren W;Wu K;Li X;Shen J;Zhao X;Hu Y

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胰腺导管腺癌是一种侵袭性强、预后差的恶性肿瘤。糖尿病是PDAC的重要风险因素,>50%的PDAC患者伴有糖尿病。糖尿病如何影响PDAC的发生和发展仍然是一个谜。在这里,我们发现transgelin-2主要表达在PDAC组织与相邻的正常组织相比。高水平的transgelin-2表明PDAC患者的生存率低。值得注意的是,transgelin-2表达与糖尿病状态相关。高胰岛素血症在2型糖尿病中经常观察到。我们的研究结果表明,上调transgelin-2诱导胰岛素通过固醇调节元件结合蛋白(SREBP)-1介导的转录在PDAC细胞。Transgelin-2是SREBP-1的一个新靶点。我们的数据支持糖尿病相关PDAC中的一种新机制,transgelin-2通过该机制介导胰岛素刺激后PDAC细胞的增殖。胰岛素/SREBP-1/transgelin-2网络应进一步探索作为糖尿病相关PDAC的诊断标志物或新的治疗靶点。
Pancreatic ductal adenocarcinoma (PDAC) is an aggressive malignancy with poor prognosis. Diabetes is a significant risk factor for PDAC and >50% of PDAC patients have concomitant diabetes. How diabetes influences the initiation and progression of PDAC remains elusive. Here, we show that transgelin-2 is dominantly expressed in PDAC tissues compared with adjacent normal tissues. The high level of transgelin-2 indicates poor survival of patients with PDAC. Remarkably, transgelin-2 expression is correlated with diabetic status. Hyperinsulinemia is frequently observed in type 2 diabetes. Our results indicate that upregulation of transgelin-2 is induced by insulin via sterol regulatory element-binding protein (SREBP)-1-mediated transcription in PDAC cells. Transgelin-2 is a novel target of SREBP-1. Our data support a novel mechanism in diabetes-associated PDAC by which transgelin-2 mediates proliferation of PDAC cells upon insulin stimulation. The insulin/SREBP-1/transgelin-2 network should be further explored as a diagnostic marker or a novel therapeutic target for diabetes-associated PDAC.
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