Journal: Stem Cells International

Article Title: Mesenchymal Stem Cells Inhibit Epithelial-to-Mesenchymal Transition by Modulating the IRE1 α Branch of the Endoplasmic Reticulum Stress Response

doi: 10.1155/2023/4483776

Figure Lengend Snippet: Suppression of ER stress contributed to MSC-mediated amelioration of EMT in A549 cells. (a) A549 cells were treated with 100 μ M TUDCA for different times. The protein expression levels of BiP, ATF6, ATF4, XBP-1s and XBP-1u were measured using western blotting and quantified using densitometry in ImageJ software ( n = 3, one-way ANOVA with Duncan's post hoc test). (b) A549 cells were treated with 10 ng/ml TGF- β 1 in the presence or absence of TUDCA for 72 hr. The protein expression levels of BiP, ATF6, ATF4, XBP-1s and XBP-1u were measured using western blotting and quantified using densitometry in ImageJ software ( n = 4, one-way ANOVA with Duncan's post hoc test). (c) A549 cells were treated with 100 μ M TUDCA for different times. The protein expression levels of E-cadherin and vimentin were measured using western blotting and quantified using densitometry in ImageJ software ( n = 3, one-way ANOVA with Duncan's post hoc test). (d) A549 cells were treated with 10 ng/ml TGF- β 1 in the presence or absence of TUDCA for 72 hr. The protein expression levels of E-cadherin and vimentin were measured using western blotting and quantified using densitometry in ImageJ software ( n = 4, one-way ANOVA with Duncan's post hoc test). The data are shown as the means ± SEMs ( ∗∗ P < 0.01, ∗ P < 0.05 vs. the control group; ## P < 0.05, # P < 0.05 vs. the TGF- β 1 group).

Article Snippet: A549 cells were treated with TGF- β 1 (10 ng/ml, 100-21, PeproTech, Rocky Hill, NJ, USA) for 72 hr with or without pretreatment with the ER stress inhibitor TUDCA (100 μ M, abs816166; Absin, Shanghai, China) or IRE1 α -specific inhibitor 4 μ 8c (10 μ M, T6363, Topscience, Shanghai, China) for 1 hr.

Techniques: Expressing, Western Blot, Software, Control