Retraction Note: Stem Cell Research & Therapy (2021) 12:85 https://doi.org/10.1186/s13287-021-02154-7

The authors have retracted this article. After publication the authors noted that they used the incorrect β-actin protein expression data in Fig. 1E. Yao Fu did not participate in the experiments presented and were included in the author list without their permission. Meng Zhou, Yao Fu and Zi Wang agree to this retraction. Mingjiao Chen and Jin Li do not agree to this retraction.