Protein kinase D1 drives pancreatic acinar cell reprogramming and progression to intraepithelial neoplasia.

Protein kinase D1 drives pancreatic acinar cell reprogramming and progression to intraepithelial neoplasia.
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蛋白激酶D1驱动胰腺腺泡细胞重编程和进展到上皮内肿瘤。

DOI:
10.1038/ncomms7200
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发表时间:
2015-02-20
影响因子:
16.6
通讯作者:
Storz, Peter
Storz, Peter
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Liou, Geou-Yarh;Doeppler, Heike;Braun, Ursula B.;Panayiotou, Richard;Buzhardt, Michele Scotti;Radisky, Derek C.;Crawford, Howard C.;Fields, Alan P.;Murray, Nicole R.;Wang, Q. Jane;Leitges, Michael;Storz, Peter

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胰腺腺泡细胞向导管表型的转分化(腺泡到导管化生,ADM)发生在胰腺损伤或炎症后,并且是一个可逆过程。然而,在存在激活的 Kras 突变或持续的表皮生长因子受体 (EGF-R) 信号传导的情况下,经历 ADM 的细胞可能会进展为胰腺上皮内病变 (PanIN),并最终发展为胰腺癌。在转基因动物模型中,ADM 和 PanIN 由 EGF-R 的高亲和力配体或激活 Kras 突变启动,但潜在的信号传导机制尚不清楚。在这里,我们使用条件敲除方法,证明蛋白激酶 D1 (PKD1) 足以驱动重编程过程形成导管表型并进展为 PanIN。此外,利用原代胰腺腺泡细胞的 3D 外植体培养,我们发现 PKD1 在 TGFα 和 Kras 下游发挥作用,通过激活 Notch 途径介导导管结构的形成。
The transdifferentiation of pancreatic acinar cells to a ductal phenotype (acinar-to-ductal metaplasia, ADM) occurs after injury or inflammation of the pancreas and is a reversible process. However, in the presence of activating Kras mutations or persistent epidermal growth factor receptor (EGF-R) signaling, cells that underwent ADM can progress to pancreatic intraepithelial lesions (PanINs) and eventually pancreatic cancer. In transgenic animal models, ADM and PanINs are initiated by high-affinity ligands for EGF-R or activating Kras mutations, but the underlying signaling mechanisms are not well understood. Here, using a conditional knockout approach, we show that Protein Kinase D1 (PKD1) is sufficient to drive the reprogramming process to a ductal phenotype and progression to PanINs. Moreover, using 3D explant culture of primary pancreatic acinar cells, we show that PKD1 acts downstream of TGFα and Kras to mediate formation of ductal structures through activation of the Notch pathway.
蛋白激酶 D 信号传导在胰腺癌中的作用。
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