Regulation of epithelial-to-mesenchymal transition in hypoxia by the HIF-1α network

FEBS Letters

article

Hang-Yu Wang¹  Xiao-Peng Zhang¹  Wei Wang³ 

[1] Kuang Yaming Honors School, Nanjing University;Institute for Brain Sciences, Nanjing University;National Laboratory of Solid State Microstructure and Department of Physics, Nanjing University

关键词: epithelial-to-mesenchymal transition;    HIF-1α network;    intermediate state;    positive feedback loop;    topology;   

DOI  :  10.1002/1873-3468.14258

来源: John Wiley & Sons Ltd.

【 摘 要 】

Epithelial-to-mesenchymal transition (EMT) plays a significant role in cancer metastasis. A series of models have focused on EMT regulation by TGF-β network. However, how EMT is regulated under hypoxia is less understood. We developed a model of HIF-1α network to explore the potential link between EMT and the network topology. Our results revealed that three positive feedback loops, composed of HIF-1α and its three targets SNAIL, TWIST, and miR-210, should be sequentially activated to induce EMT under aggravating hypoxia. We suggested that the number of the positive feedback loops is critical for determining the number of stable states in EMT. Our work may advance the understanding of the significance of network topology in the regulation of EMT.

【 授权许可】

Unknown