Metformin Suppresses the Proliferation and Promotes the Apoptosis of Colon Cancer Cells Through Inhibiting the Expression of Long Noncoding RNA-UCA1 [Retraction]

Guo J, Li Y, Duan H, Yuan L. Onco Targets Ther. 2020;13:4169-4181. We, the Editors and Publisher of OncoTargets and Therapy, have retracted the following article. Following publication of the article, concerns were raised about the duplication of images from Figure 6 with images from other unrelated articles. Specifically, Images for Figure 6C have been duplicated with images for Figure 6D from Luo Q, Li B, Li G. Mannose Suppresses the Proliferation and Metastasis of Lung Cancer by Targeting the ERK/GSK-3β/β-Catenin/SNAIL Axis. Onco Targets Ther. 2020;13:2771-2781. https://doi.org/10.2147/OTT.S241816. The authors responded to our queries but were unable to provide a sufficient explanation for the duplicated images or provide sufficient data for the study. As verifying the validity of published work is core to the integrity of the scholarly record, we are therefore retracting the article and the authors agree with this decision. We have been informed in our decision-making by our editorial policies and COPE guidelines. The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as “Retracted”.