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. 2021 Jan 13;14:14. doi: 10.1186/s13045-020-01030-w

Fig. 3.

Fig. 3

Effects of microenvironmental remodeling on PC progression under hypoxia. Hypoxia-driven ROS production activates PSCs to secrete various soluble factors, favoring the malignant phenotypes of PC. Hypoxia-stimulated TGF-α signaling induces Fbln5 expression through a PI3K/AKT-dependent mechanism in A-PSC, and Fbln5 competes with fibronectin for integrin binding and reduces ROS production. Upward arrows indicate upregulation of expression, and other arrows indicate positive modulations or release of molecules. Abbreviations: A-PSC, activated pancreatic stellate cells; Gem, gemcitabine; Q-PSC, quiescent pancreatic stellate cells