PMID- 33276084 OWN - NLM STAT- MEDLINE DCOM- 20211207 LR - 20211214 IS - 1095-953X (Electronic) IS - 0969-9961 (Linking) VI - 148 DP - 2021 Jan TI - Deletion of PDK1 in oligodendrocyte lineage cells causes white matter abnormality and myelination defect in the central nervous system. PG - 105212 LID - S0969-9961(20)30487-3 [pii] LID - 10.1016/j.nbd.2020.105212 [doi] AB - PDK1 (3-Phosphoinositide dependent protein kinase-1) is a member in the PI3K (phosphatidylinositol 3 kinase) pathway and is implicated in neurodevelopmental disease with microcephaly. Although the role of PDK1 in neurogenesis has been broadly studied, it remains unknown how PDK1 may regulate oligogenesis in the central nervous system (CNS). To address this question, we generated oligodendrocyte (OL) lineage cells specific PDK1 conditional knockout (cKO) mice. We find that PDK1 cKOs display abnormal white matter (WM), massive loss of mature OLs and severe defect in myelination in the CNS. In contrast, these mutants exhibit normal neuronal development and unchanged apoptosis in the CNS. We demonstrate that deletion of PDK1 severely impairs OL differentiation. We show that genetic or pharmacological inhibition of PDK1 causes deficit in the mammalian target of rapamycin (mTor) signaling and down-regulation of Sox10. Together, these results highlight a critical role of PDK1 in OL differentiation during postnatal CNS development. CI - Copyright (c) 2020. Published by Elsevier Inc. FAU - Wang, He AU - Wang H AD - Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, No. 1 East Jianshe Road, Zhengzhou 450052, China. FAU - Liu, Mengjia AU - Liu M AD - State Key Laboratory of Pharmaceutical Biotechnology, MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing University, 12 Xuefu Avenue, Nanjing, Jiangsu Province 210061, China. FAU - Zou, Gang AU - Zou G AD - Department of Anesthesiology, The Second Affiliated Hospital, Nanjing Medical University, 121 Jiangjiayuan Avenue, Nanjing, Jiangsu Province 210003, China. FAU - Wang, Long AU - Wang L AD - State Key Laboratory of Pharmaceutical Biotechnology, MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing University, 12 Xuefu Avenue, Nanjing, Jiangsu Province 210061, China. FAU - Duan, Wenbin AU - Duan W AD - Department of General Surgery, The Second Clinical Medical College, Shenzhen People's Hospital, Jinan University, Shenzhen 518000, China. FAU - He, Xue AU - He X AD - Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, No. 1 East Jianshe Road, Zhengzhou 450052, China. FAU - Ji, Muhuo AU - Ji M AD - Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, No. 1 East Jianshe Road, Zhengzhou 450052, China. FAU - Zou, Xiaochuan AU - Zou X AD - State Key Laboratory of Pharmaceutical Biotechnology, MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing University, 12 Xuefu Avenue, Nanjing, Jiangsu Province 210061, China. FAU - Hu, Yimin AU - Hu Y AD - Department of General Surgery, The Second Clinical Medical College, Shenzhen People's Hospital, Jinan University, Shenzhen 518000, China. Electronic address: guyueym@njmu.edu.cn. FAU - Yang, Jianjun AU - Yang J AD - Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, No. 1 East Jianshe Road, Zhengzhou 450052, China. Electronic address: yjyangjj@126.com. FAU - Chen, Guiquan AU - Chen G AD - State Key Laboratory of Pharmaceutical Biotechnology, MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing University, 12 Xuefu Avenue, Nanjing, Jiangsu Province 210061, China. Electronic address: chenguiquan@nju.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20201201 PL - United States TA - Neurobiol Dis JT - Neurobiology of disease JID - 9500169 RN - 0 (Pdk1 protein, mouse) RN - 0 (Pyruvate Dehydrogenase Acetyl-Transferring Kinase) RN - 0 (SOXE Transcription Factors) RN - 0 (Sox10 protein, mouse) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Animals MH - Cell Differentiation/*genetics MH - Cell Line MH - Cell Lineage MH - Down-Regulation MH - Mice MH - Mice, Knockout MH - Myelin Sheath/*metabolism MH - Oligodendrocyte Precursor Cells/*metabolism MH - Oligodendroglia/*metabolism MH - Pyruvate Dehydrogenase Acetyl-Transferring Kinase/antagonists & inhibitors/*genetics MH - SOXE Transcription Factors/*genetics/metabolism MH - TOR Serine-Threonine Kinases/metabolism MH - White Matter/*metabolism OTO - NOTNLM OT - Differentiation OT - Oligodendrocyte precursor cells OT - Oligodendrocytes OT - PDK1 OT - White matter disease EDAT- 2020/12/05 06:00 MHDA- 2021/12/15 06:00 CRDT- 2020/12/04 20:09 PHST- 2020/07/06 00:00 [received] PHST- 2020/11/17 00:00 [revised] PHST- 2020/11/29 00:00 [accepted] PHST- 2020/12/05 06:00 [pubmed] PHST- 2021/12/15 06:00 [medline] PHST- 2020/12/04 20:09 [entrez] AID - S0969-9961(20)30487-3 [pii] AID - 10.1016/j.nbd.2020.105212 [doi] PST - ppublish SO - Neurobiol Dis. 2021 Jan;148:105212. doi: 10.1016/j.nbd.2020.105212. Epub 2020 Dec 1.