PMID- 31987502 OWN - NLM STAT- MEDLINE DCOM- 20201016 LR - 20201016 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 524 IP - 2 DP - 2020 Apr 2 TI - beta-catenin stimulates Tcf7l1 degradation through recruitment of casein kinase 2 in mouse embryonic stem cells. PG - 280-287 LID - S0006-291X(20)30143-1 [pii] LID - 10.1016/j.bbrc.2020.01.074 [doi] AB - Activation of the Wnt/beta-catenin signaling pathway by the inhibition of glycogen synthase kinase-3 (GSK-3) will induce Tcf7l1 protein degradation to effectively promote embryonic stem cell (ESC) self-renewal. However, the exact mechanism remains unclear. Here, we found that inhibition of casein kinase 2 (Csnk2) by TBB or DMAT was sufficient to block the reduction of the Tcf7l1 protein induced by CHIR99021, a specific inhibitor of GSK-3. Similarly, downregulation of Csnk2 increased the Tcf7l1 level. In contrast, overexpression of Csnk2 significantly decreased Tcf7l1 protein stability in mouse ESCs. Notably, Csnk2alpha1 controls Tcf7l1 turnover to a greater degree than the other two isoforms of Csnk2, Csnk2alpha2 and Csnk2beta, as Csnk2alpha1-overexpressing mouse ESCs exhibited the lowest level of Tcf7l1. Csnk2alpha1 interacted with and phosphorylated Tcf7l1. In addition, the association of Csnk2alpha1 and Tcf7l1 was enhanced by CHIR99021. Our study demonstrated, for the first time, that Csnk2 is involved in Tcf7l1 turnover mediated by the Wnt/beta-catenin signaling pathway. These results expand our understanding of the function and circuit of Wnt/beta-catenin signaling pathway in ESCs. CI - Copyright (c) 2020 Elsevier Inc. All rights reserved. FAU - Zhang, Yan AU - Zhang Y AD - Center for Stem Cell and Translational Medicine, School of Life Sciences & Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, PR China. FAU - Zhu, Zhenhua AU - Zhu Z AD - Center for Stem Cell and Translational Medicine, School of Life Sciences & Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, PR China. FAU - Ding, Huiwen AU - Ding H AD - Center for Stem Cell and Translational Medicine, School of Life Sciences & Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, PR China. FAU - Wan, Shengpeng AU - Wan S AD - Center for Stem Cell and Translational Medicine, School of Life Sciences & Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, PR China. FAU - Zhang, Xinbao AU - Zhang X AD - Center for Stem Cell and Translational Medicine, School of Life Sciences & Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, PR China. FAU - Li, Yuting AU - Li Y AD - Center for Stem Cell and Translational Medicine, School of Life Sciences & Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, PR China. FAU - Ji, Junxiang AU - Ji J AD - Center for Stem Cell and Translational Medicine, School of Life Sciences & Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, PR China. FAU - Wang, Xin AU - Wang X AD - Center for Stem Cell and Translational Medicine, School of Life Sciences & Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, PR China. FAU - Zhang, Meng AU - Zhang M AD - Center for Stem Cell and Translational Medicine, School of Life Sciences & Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, PR China. FAU - Ye, Shou-Dong AU - Ye SD AD - Center for Stem Cell and Translational Medicine, School of Life Sciences & Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, PR China. Electronic address: shdye@126.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200125 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Tcf7l1 protein, mouse) RN - 0 (Transcription Factor 7-Like 1 Protein) RN - 0 (beta Catenin) RN - EC 2.7.11.1 (Casein Kinase II) RN - EC 2.7.11.1 (Csnk2a1 protein, mouse) SB - IM MH - Animals MH - Casein Kinase II/*metabolism MH - Cell Line MH - Mice MH - Mouse Embryonic Stem Cells/*metabolism MH - Protein Interaction Maps MH - Proteolysis MH - Transcription Factor 7-Like 1 Protein/*metabolism MH - beta Catenin/*metabolism OTO - NOTNLM OT - Csnk2 OT - Degradation OT - Embryonic stem cells OT - Tcf7l1 OT - beta-catenin COIS- Declaration of competing interest None. EDAT- 2020/01/29 06:00 MHDA- 2020/10/21 06:00 CRDT- 2020/01/29 06:00 PHST- 2019/12/09 00:00 [received] PHST- 2020/01/13 00:00 [accepted] PHST- 2020/01/29 06:00 [pubmed] PHST- 2020/10/21 06:00 [medline] PHST- 2020/01/29 06:00 [entrez] AID - S0006-291X(20)30143-1 [pii] AID - 10.1016/j.bbrc.2020.01.074 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2020 Apr 2;524(2):280-287. doi: 10.1016/j.bbrc.2020.01.074. Epub 2020 Jan 25.