PMID- 31382189 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220526 IS - 2162-2531 (Print) IS - 2162-2531 (Electronic) IS - 2162-2531 (Linking) VI - 17 DP - 2019 Sep 6 TI - Silencing of the MEKK2/MEKK3 Pathway Protects against Spinal Cord Injury via the Hedgehog Pathway and the JNK Pathway. PG - 578-589 LID - S2162-2531(19)30144-1 [pii] LID - 10.1016/j.omtn.2019.05.014 [doi] AB - Spinal cord injury (SCI) is a devastating medical condition, often accompanied by motor and sensory dysfunction. The Hedgehog (Hh) pathway has a protective role in pathological injury after SCI. However, the specific mechanism remains unclear. The present study aimed to confirm the effects of the mitogen-activated protein kinase kinase-2 (MEKK2)/MEKK3/JNK/Hh pathway on SCI. SCI rat models were established and then inoculated with plasmids overexpressing MEKK2/MEKK3 or with small interfering RNA (siRNA) against MEKK2/MEKK3. The expression of MEKK2 and -3 was detected in dorsal root ganglia (DRG) cells. The motor function of hindlimbs, the expression of the c-Jun N-terminal kinase (JNK)- and Hh-pathway-related genes, and the level of neurofilament-200 (NF-200) and glial fibrillary acidic protein (GFAP) were measured. MEKK2 and -3 were expressed at a high level in DRG cells. The silencing of MEKK2/MEKK3 in rats caused an increase in the expression of glioma-associated oncogene homolog-1 (Gli-1), Nestin, smoothened (Smo), and Sonic Hedgehog (Shh). The Basso, Beattie, and Bresnahan (BBB) rating and the level of NF-200 protein also increased. However, the expression of monocyte chemoattractant protein-1 (MCP-1), macrophage inflammatory protein-1beta (MIP-1beta), MIP-3alpha, p-JNK/JNK, and p-c-Jun/c-Jun and the level of GFAP were reduced. Downregulation of MEKK2/MEKK3 ameliorated the symptoms of SCI by promoting neural progenitor cell differentiation via activating the Hh pathway and disrupting the JNK pathway. The findings in this study reveal a potential biomarker for SCI treatment. CI - Copyright (c) 2019 The Authors. Published by Elsevier Inc. All rights reserved. FAU - Kong, Yan-Long AU - Kong YL AD - Department of Orthopaedics, Fengxian Hospital Affiliated to Anhui University of Science and Technology, 6600 Nanfeng Road, Shanghai 201499, People's Republic of China. FAU - Wang, Yi-Fei AU - Wang YF AD - Department of Orthopaedics, Fengxian Hospital Affiliated to Southern Medical University, 6600 Nanfeng Road, Shanghai 201499, People's Republic of China. FAU - Zhu, Zhong-Sheng AU - Zhu ZS AD - Department of Orthopaedics, Fengxian Hospital Affiliated to Southern Medical University, 6600 Nanfeng Road, Shanghai 201499, People's Republic of China. FAU - Deng, Zheng-Wei AU - Deng ZW AD - Graduate School, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, People's Republic of China. FAU - Chen, Jing AU - Chen J AD - Graduate School, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, People's Republic of China. FAU - Zhang, Dong AU - Zhang D AD - Department of Orthopaedics, Fengxian Hospital Affiliated to Southern Medical University, 6600 Nanfeng Road, Shanghai 201499, People's Republic of China. FAU - Jiang, Qun-Hua AU - Jiang QH AD - Department of Orthopaedics, Fengxian Hospital Affiliated to Southern Medical University, 6600 Nanfeng Road, Shanghai 201499, People's Republic of China. Electronic address: jff1969@126.com. FAU - Zhao, Shi-Chang AU - Zhao SC AD - Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, 600 Yishan Road, Shanghai 200233, People's Republic of China. Electronic address: zhaoshichang0404@163.com. FAU - Zhang, Ya-Dong AU - Zhang YD AD - Department of Orthopaedics, Fengxian Hospital Affiliated to Anhui University of Science and Technology, 6600 Nanfeng Road, Shanghai 201499, People's Republic of China; Department of Orthopaedics, Fengxian Hospital Affiliated to Southern Medical University, 6600 Nanfeng Road, Shanghai 201499, People's Republic of China. Electronic address: zhangyadong6@126.com. LA - eng PT - Journal Article PT - Retracted Publication DEP - 20190604 PL - United States TA - Mol Ther Nucleic Acids JT - Molecular therapy. Nucleic acids JID - 101581621 RIN - Mol Ther Nucleic Acids. 2022 May 10;28:600. PMID: 35615008 PMC - PMC6682310 OTO - NOTNLM OT - Hedgehog signaling pathway OT - JNK signaling pathway OT - MEKK2/MEKK3 OT - neural progenitor cell differentiation OT - spinal cord injury EDAT- 2019/08/06 06:00 MHDA- 2019/08/06 06:01 PMCR- 2019/06/04 CRDT- 2019/08/06 06:00 PHST- 2019/03/15 00:00 [received] PHST- 2019/05/17 00:00 [accepted] PHST- 2019/08/06 06:00 [pubmed] PHST- 2019/08/06 06:01 [medline] PHST- 2019/08/06 06:00 [entrez] PHST- 2019/06/04 00:00 [pmc-release] AID - S2162-2531(19)30144-1 [pii] AID - 10.1016/j.omtn.2019.05.014 [doi] PST - ppublish SO - Mol Ther Nucleic Acids. 2019 Sep 6;17:578-589. doi: 10.1016/j.omtn.2019.05.014. Epub 2019 Jun 4.