We, the Publisher and Editor of Cell Cycle, are issuing an Expression of Concern for the following article:
Yuanyuan Liu, Chuanqian Liu, Xueting Zhang, Zhenzhen Liu & Xipeng Yan (2020) Chrysophanol protects PC12 cells against oxygen glucose deprivation-evoked injury by up-regulating miR-216a, Cell Cycle, 19:12, 1433-1442, DOI: 10.1080/15384101.2020.1731655
After publication of this article, questions about the scientific integrity of the article content were brought to the Publisher and Editor’s attention. We have reached out to the authors requesting that they supply information that would confirm the article’s integrity, but the authors have not responded to our queries within the requested timeframe. Therefore, as we continue to work through the issues raised, we advise readers to interpret the information presented in the article with due caution.
The authors have been notified about this Expression of Concern.