PMID- 29649487 OWN - NLM STAT- MEDLINE DCOM- 20190222 LR - 20190222 IS - 1872-7972 (Electronic) IS - 0304-3940 (Linking) VI - 676 DP - 2018 May 29 TI - Expression patterns and role of PTEN in rat peripheral nerve development and injury. PG - 78-84 LID - S0304-3940(18)30277-5 [pii] LID - 10.1016/j.neulet.2018.04.016 [doi] AB - Studies have suggested that phosphatase and tensin homolog (PTEN) plays an important role in neuroprotection and neuronal regeneration. To better understand the potential role of PTEN with respect to peripheral nerve development and injury, we investigated the expression pattern of PTEN at different stages of rat peripheral nerve development and injury and subsequently assessed the effect of pharmacological inhibition of PTEN using bpV(pic) on axonal regeneration in a rat sciatic nerve crush injury model. During the early stages of development, PTEN exhibits low expression in neuronal cell bodies and axons. From embryonic day (E) 18.5 and postnatal day (P)5 to adult, PTEN protein becomes more detectable, with high expression in the dorsal root ganglia (DRG) and axons. PTEN expression is inhibited in peripheral nerves, preceding myelination during neuronal development and remyelination after acute nerve injury. Low PTEN expression after nerve injury promotes Akt/mammalian target of rapamycin (mTOR) signaling pathway activity. In vivo pharmacological inhibition of PTEN using bpV(pic) promoted axonal regrowth, increased the number of myelinated nerve fibers, improved locomotive recovery and enhanced the amplitude response and nerve conduction velocity following stimulation in a rat sciatic nerve crush injury model. Thus, we suggest that PTEN may play potential roles in peripheral nerve development and regeneration and that inhibition of PTEN expression is beneficial for nerve regeneration and functional recovery after peripheral nerve injury. CI - Copyright (c) 2018 Elsevier B.V. All rights reserved. FAU - Chen, Hui AU - Chen H AD - Department of Orthopedic and Microsurgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China. FAU - Xiang, Jianping AU - Xiang J AD - Department of Orthopedic and Microsurgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China. FAU - Wu, Junxia AU - Wu J AD - Department of Nephrology, Nanjing First Hospital, Nanjing Medical University, Nanjing, PR China. FAU - He, Bo AU - He B AD - Department of Orthopedic and Microsurgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China. FAU - Lin, Tao AU - Lin T AD - Department of Orthopedic and Microsurgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China. FAU - Zhu, Qingtang AU - Zhu Q AD - Department of Orthopedic and Microsurgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China. FAU - Liu, Xiaolin AU - Liu X AD - Department of Orthopedic and Microsurgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China. FAU - Zheng, Canbin AU - Zheng C AD - Department of Orthopedic and Microsurgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China. Electronic address: zhengcanbin@qq.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180409 PL - Ireland TA - Neurosci Lett JT - Neuroscience letters JID - 7600130 RN - EC 3.1.3.67 (PTEN Phosphohydrolase) RN - EC 3.1.3.67 (Pten protein, rat) SB - IM MH - Animals MH - Ganglia, Spinal/metabolism MH - Nerve Crush MH - *Nerve Regeneration MH - PTEN Phosphohydrolase/*metabolism MH - Peripheral Nerve Injuries/*metabolism MH - Peripheral Nerves/*embryology/*metabolism MH - Rats MH - Sciatic Nerve/injuries/physiopathology OTO - NOTNLM OT - Crush injury OT - Development OT - PTEN OT - Peripheral nerve OT - Regeneration EDAT- 2018/04/13 06:00 MHDA- 2019/02/23 06:00 CRDT- 2018/04/13 06:00 PHST- 2018/02/24 00:00 [received] PHST- 2018/03/29 00:00 [revised] PHST- 2018/04/07 00:00 [accepted] PHST- 2018/04/13 06:00 [pubmed] PHST- 2019/02/23 06:00 [medline] PHST- 2018/04/13 06:00 [entrez] AID - S0304-3940(18)30277-5 [pii] AID - 10.1016/j.neulet.2018.04.016 [doi] PST - ppublish SO - Neurosci Lett. 2018 May 29;676:78-84. doi: 10.1016/j.neulet.2018.04.016. Epub 2018 Apr 9.