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Tsai YC, Huang SM, Peng HH, Lin SW, Lin SR, Chin TY, Huang SM. Imbalance of synaptic and extrasynaptic NMDA receptors induced by the deletion of CRMP1 accelerates age-related cognitive decline in mice. Neurobiol Aging 2024; 135:48-59. [PMID: 38176125 DOI: 10.1016/j.neurobiolaging.2023.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 12/25/2023] [Accepted: 12/27/2023] [Indexed: 01/06/2024]
Abstract
Collapsin response mediator protein 1 (CRMP1) is involved in semaphorin 3A signaling pathway, promoting neurite extension and growth cone collapse. It is highly expressed in the nervous system, especially the hippocampus. The crmp1 knockout (KO) mice display impaired spatial learning and memory, and this phenomenon seemingly tends to deteriorate with age. Here we investigated whether CRMP1 is involved in age-related cognitive decline in WT and crmp1 KO mice at adult, middle-aged and older stages. The results revealed that cognitive dysfunction in the Morris water maze task became more severe and decreased glutamate and glutamine level in middle-aged crmp1 KO mice. Additionally, increasing levels of extrasynaptic NMDA receptors and phosphorylation of Tau were observed in middle-aged crmp1 KO mice, leading to synaptic and neuronal loss in the CA3 regions of hippocampus. These findings suggest that deletion of CRMP1 accelerates age-related cognitive decline by disrupting the balance between synaptic and extrasynaptic NMDA receptors, resulting in the loss of synapses and neurons.
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Affiliation(s)
- Yun-Chieh Tsai
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Sheng-Min Huang
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli, Taiwan
| | - Hsu-Hsia Peng
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Shu-Wha Lin
- Department of Clinical Laboratory Sciences and Medical Biotechnology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Shu-Rung Lin
- Department of Bioscience Technology, Chung Yuan Christian University, Taoyuan, Taiwan.
| | - Ting-Yu Chin
- Department of Bioscience Technology, Chung Yuan Christian University, Taoyuan, Taiwan.
| | - Shih-Ming Huang
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan; Department of Biochemistry, National Defense Medical Center, Taipei, Taiwan.
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2
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Lukomska A, Theune WC, Xing J, Frost MP, Damania A, Gupta M, Trakhtenberg EF. Experimental gene expression of developmentally downregulated Crmp1, Crmp4, and Crmp5 promotes axon regeneration and retinal ganglion cell survival after optic nerve injury. Brain Res 2023; 1809:148368. [PMID: 37059258 PMCID: PMC10227878 DOI: 10.1016/j.brainres.2023.148368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 03/29/2023] [Accepted: 04/10/2023] [Indexed: 04/16/2023]
Abstract
Collapsin response mediator proteins (Crmps) play roles in neuronal development and axon growth. However, neuronal-specific roles of Crmp1, Crmp4, and Crmp5 in regeneration of injured central nervous system (CNS) axons in vivo are unclear. Here, we analyzed developmental and subtype-specific expression of Crmp genes in retinal ganglion cells (RGCs), tested whether overexpressing Crmp1, Crmp4, or Crmp5 in RGCs through localized intralocular AAV2 delivery promotes axon regeneration after optic nerve injury in vivo, and characterized developmental co-regulation of gene-concept networks associated with Crmps. We found that all Crmp genes are developmentally downregulated in RGCs during maturation. However, while Crmp1, Crmp2, and Crmp4 were expressed to a varying degree in most RGC subtypes, Crmp3 and Crmp5 were expressed only in a small subset of RGC subtypes. We then found that after optic nerve injury, Crmp1, Crmp4, and Crmp5 promote RGC axon regeneration to varying extents, with Crmp4 promoting the most axon regeneration and also localizing to axons. We also found that Crmp1 and Crmp4, but not Crmp5, promote RGC survival. Finally, we found that Crmp1, Crmp2, Crmp4, and Crmp5's ability to promote axon regeneration is associated with neurodevelopmental mechanisms, which control RGC's intrinsic axon growth capacity.
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Affiliation(s)
- Agnieszka Lukomska
- Department of Neuroscience, University of Connecticut School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA
| | - William C Theune
- Department of Neuroscience, University of Connecticut School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA
| | - Jian Xing
- Department of Neuroscience, University of Connecticut School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA
| | - Matthew P Frost
- Department of Neuroscience, University of Connecticut School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA
| | - Ashiti Damania
- Department of Neuroscience, University of Connecticut School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA
| | - Mahit Gupta
- Department of Neuroscience, University of Connecticut School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA
| | - Ephraim F Trakhtenberg
- Department of Neuroscience, University of Connecticut School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA.
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Cuveillier C, Boulan B, Ravanello C, Denarier E, Deloulme JC, Gory-Fauré S, Delphin C, Bosc C, Arnal I, Andrieux A. Beyond Neuronal Microtubule Stabilization: MAP6 and CRMPS, Two Converging Stories. Front Mol Neurosci 2021; 14:665693. [PMID: 34025352 PMCID: PMC8131560 DOI: 10.3389/fnmol.2021.665693] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 04/09/2021] [Indexed: 12/21/2022] Open
Abstract
The development and function of the central nervous system rely on the microtubule (MT) and actin cytoskeletons and their respective effectors. Although the structural role of the cytoskeleton has long been acknowledged in neuronal morphology and activity, it was recently recognized to play the role of a signaling platform. Following this recognition, research into Microtubule Associated Proteins (MAPs) diversified. Indeed, historically, structural MAPs—including MAP1B, MAP2, Tau, and MAP6 (also known as STOP);—were identified and described as MT-binding and -stabilizing proteins. Extensive data obtained over the last 20 years indicated that these structural MAPs could also contribute to a variety of other molecular roles. Among multi-role MAPs, MAP6 provides a striking example illustrating the diverse molecular and cellular properties of MAPs and showing how their functional versatility contributes to the central nervous system. In this review, in addition to MAP6’s effect on microtubules, we describe its impact on the actin cytoskeleton, on neuroreceptor homeostasis, and its involvement in signaling pathways governing neuron development and maturation. We also discuss its roles in synaptic plasticity, brain connectivity, and cognitive abilities, as well as the potential relationships between the integrated brain functions of MAP6 and its molecular activities. In parallel, the Collapsin Response Mediator Proteins (CRMPs) are presented as examples of how other proteins, not initially identified as MAPs, fall into the broader MAP family. These proteins bind MTs as well as exhibiting molecular and cellular properties very similar to MAP6. Finally, we briefly summarize the multiple similarities between other classical structural MAPs and MAP6 or CRMPs.In summary, this review revisits the molecular properties and the cellular and neuronal roles of the classical MAPs, broadening our definition of what constitutes a MAP.
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Cheng XQ, Xu WJ, Ding X, Han GH, Wei S, Liu P, Meng HY, Shang AJ, Wang Y, Wang AY. Bioinformatic analysis of cytokine expression in the proximal and distal nerve stumps after peripheral nerve injury. Neural Regen Res 2021; 16:878-884. [PMID: 33229723 PMCID: PMC8178785 DOI: 10.4103/1673-5374.295348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
In our previous study, we investigated the dynamic expression of cytokines in the distal nerve stumps after peripheral nerve injury using microarray analysis, which can characterize the dynamic expression of proteins. In the present study, we used a rat model of right sciatic nerve transection to examine changes in the expression of cytokines at 1, 7, 14 and 28 days after injury using protein microarray analysis. Interleukins were increased in the distal nerve stumps at 1-14 days post nerve transection. However, growth factors and growth factor-related proteins were mainly upregulated in the proximal nerve stumps. The P-values of the inflammatory response, apoptotic response and cell-cell adhesion in the distal stumps were higher than those in the proximal nerve stumps, but the opposite was observed for angiogenesis. The number of cytokines related to axons in the distal stumps was greater than that in the proximal stumps, while the percentage of cytokines related to axons in the distal stumps was lower than that in the proximal nerve stumps. Visualization of the results revealed the specific expression patterns and differences in cytokines in and between the proximal and distal nerve stumps. Our findings offer potential therapeutic targets and should help advance the development of clinical treatments for peripheral nerve injury. Approval for animal use in this study was obtained from the Animal Ethics Committee of the Chinese PLA General Hospital on September 7, 2016 (approval No. 2016-x9-07).
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Affiliation(s)
- Xiao-Qing Cheng
- Institute of Orthopedics; Beijing Key Laboratory of Regenerative Medicine in Orthopedics; Key Lab of Musculoskeletal Trauma & War Injuries, Chinese PLA General Hospital, Beijing, China
| | - Wen-Jing Xu
- Institute of Orthopedics; Beijing Key Laboratory of Regenerative Medicine in Orthopedics; Key Lab of Musculoskeletal Trauma & War Injuries, Chinese PLA General Hospital, Beijing, China
| | - Xiao Ding
- Institute of Orthopedics; Beijing Key Laboratory of Regenerative Medicine in Orthopedics; Key Lab of Musculoskeletal Trauma & War Injuries, Chinese PLA General Hospital, Beijing, China
| | - Gong-Hai Han
- Institute of Orthopedics; Beijing Key Laboratory of Regenerative Medicine in Orthopedics; Key Lab of Musculoskeletal Trauma & War Injuries, Chinese PLA General Hospital, Beijing, China
| | - Shuai Wei
- Institute of Orthopedics; Beijing Key Laboratory of Regenerative Medicine in Orthopedics; Key Lab of Musculoskeletal Trauma & War Injuries, Chinese PLA General Hospital, Beijing, China
| | - Ping Liu
- Institute of Orthopedics; Beijing Key Laboratory of Regenerative Medicine in Orthopedics; Key Lab of Musculoskeletal Trauma & War Injuries, Chinese PLA General Hospital, Beijing, China
| | - Hao-Ye Meng
- Institute of Orthopedics; Beijing Key Laboratory of Regenerative Medicine in Orthopedics; Key Lab of Musculoskeletal Trauma & War Injuries, Chinese PLA General Hospital, Beijing, China
| | - Ai-Jia Shang
- Department of Neurosurgery, Chinese PLA General Hospital, Beijing; Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China
| | - Yu Wang
- Institute of Orthopedics; Beijing Key Laboratory of Regenerative Medicine in Orthopedics; Key Lab of Musculoskeletal Trauma & War Injuries, Chinese PLA General Hospital, Beijing; Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China
| | - Ai-Yuan Wang
- Institute of Orthopedics; Beijing Key Laboratory of Regenerative Medicine in Orthopedics; Key Lab of Musculoskeletal Trauma & War Injuries, Chinese PLA General Hospital, Beijing, China
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Xia B, Gao J, Li S, Huang L, Zhu L, Ma T, Zhao L, Yang Y, Luo K, Xiaowei, Shi, Mei L, Zhang H, Zheng Y, Lu L, Luo Z, Huang J. Mechanical stimulation of Schwann cells promote peripheral nerve regeneration via extracellular vesicle-mediated transfer of microRNA 23b-3p. Theranostics 2020; 10:8974-8995. [PMID: 32802175 PMCID: PMC7415818 DOI: 10.7150/thno.44912] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 06/09/2020] [Indexed: 12/14/2022] Open
Abstract
Rationale: Peripheral nerves are unique in their remarkable elasticity. Schwann cells (SCs), important components of the peripheral nervous system (PNS), are constantly subjected to physiological and mechanical stresses from dynamic stretching and compression forces during movement. So far, it is not clear if SCs sense and respond to mechanical signals. It is also unknown whether mechanical stimuli can interfere with the intercellular communications between neurons and SCs, and what role extracellular vesicles (EVs) play in this process. The present study aimed to examine the effect of mechanical stimuli on the EV-mediated intercellular communication between neurons and SCs, explore their effect on axonal regeneration, and investigate the underlying mechanism. Methods: Purified SCs were stimulated using a magnetic force-based mechanical stimulation (MS) system and EVs were purified from mechanically stimulated SCs (MS-SCs-EVs) and non-stimulated SCs (SCs-EVs). The effect of MS-SCs-EVs on axonal elongation was examined in vitro and in vivo. High throughput miRNA sequencing was performed to compare the differential miRNA profiles between MS-SCs-EVs and SCs-EVs. The functional role of differentially expressed miRNAs on neurite extension in MS-SCs-EVs was examined. Also, the putative target genes of differentially expressed miRNAs in MS-SCs-EVs were predicted by bioinformatics tools, and the regulatory effect of those miRNAs on putative target genes was validated both in vitro and in vivo. Results: The MS-SCs-EVs showed an average size of 137.52±1.77 nm, and could be internalized by dorsal root ganglion (DRG) neurons. Compared to SCs-EVs, MS-SCs-EVs showed a stronger ability to enhance neurite outgrowth in vitro and nerve regeneration in vivo. High throughput miRNA sequencing identified a number of differentially expressed miRNAs in MS-SCs-EVs. Further analysis of those EV-miRNAs demonstrated that miR-23b-3p played a predominant role in MS-SCs-EVs since its deprivation abolished their enhanced axonal elongation. Furthermore, we identified neuropilin 1 (Nrp1) in neurons as the target gene of miR-23b-3p in MS-SCs-EVs. This observation was supported by the evidence that miR-23b-3p could decrease Nrp1-3'-UTR-WT luciferase activity in vitro and down-regulate Nrp1 expression in neurons. Conclusion: Our findings suggested that mechanical stimuli are capable of modulating the intercellular communication between neurons and SCs by altering miRNA composition in MS-SCs-EVs. Transfer of miR-23b-3p by MS-SCs-EVs from mechanically stimulated SCs to neurons decreased neuronal Nrp1 expression, which was responsible, at least in part, for the beneficial effect of MS-SCs-EVs on axonal regeneration. Our results highlighted the potential therapeutic value of MS-SCs-EVs and miR-23b-3p-enriched EVs in peripheral nerve injury repair.
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Jiang T, Zhang G, Liang Y, Cai Z, Liang Z, Lin H, Tan M. PlexinA3 Interacts with CRMP2 to Mediate Sema3A Signalling During Dendritic Growth in Cultured Cerebellar Granule Neurons. Neuroscience 2020; 434:83-92. [DOI: 10.1016/j.neuroscience.2020.02.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 02/05/2020] [Accepted: 02/06/2020] [Indexed: 11/26/2022]
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Ye X, Qiu Y, Gao Y, Wan D, Zhu H. A Subtle Network Mediating Axon Guidance: Intrinsic Dynamic Structure of Growth Cone, Attractive and Repulsive Molecular Cues, and the Intermediate Role of Signaling Pathways. Neural Plast 2019; 2019:1719829. [PMID: 31097955 PMCID: PMC6487106 DOI: 10.1155/2019/1719829] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 02/25/2019] [Accepted: 03/06/2019] [Indexed: 01/01/2023] Open
Abstract
A fundamental feature of both early nervous system development and axon regeneration is the guidance of axonal projections to their targets in order to assemble neural circuits that control behavior. In the navigation process where the nerves grow toward their targets, the growth cones, which locate at the tips of axons, sense the environment surrounding them, including varies of attractive or repulsive molecular cues, then make directional decisions to adjust their navigation journey. The turning ability of a growth cone largely depends on its highly dynamic skeleton, where actin filaments and microtubules play a very important role in its motility. In this review, we summarize some possible mechanisms underlying growth cone motility, relevant molecular cues, and signaling pathways in axon guidance of previous studies and discuss some questions regarding directions for further studies.
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Affiliation(s)
- Xiyue Ye
- College of Pharmaceutical Sciences and Traditional Chinese Medicine, Southwest University, Chongqing 400715, China
- Chongqing Engineering Research Center for Pharmacological Evaluation, Chongqing 400715, China
- Engineering Research Center for Chongqing Pharmaceutical Process and Quality Control, Chongqing 400715, China
| | - Yan Qiu
- College of Pharmaceutical Sciences and Traditional Chinese Medicine, Southwest University, Chongqing 400715, China
- Chongqing Engineering Research Center for Pharmacological Evaluation, Chongqing 400715, China
- Engineering Research Center for Chongqing Pharmaceutical Process and Quality Control, Chongqing 400715, China
| | - Yuqing Gao
- College of Pharmaceutical Sciences and Traditional Chinese Medicine, Southwest University, Chongqing 400715, China
- Chongqing Engineering Research Center for Pharmacological Evaluation, Chongqing 400715, China
- Engineering Research Center for Chongqing Pharmaceutical Process and Quality Control, Chongqing 400715, China
| | - Dong Wan
- Department of Emergency, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Huifeng Zhu
- College of Pharmaceutical Sciences and Traditional Chinese Medicine, Southwest University, Chongqing 400715, China
- Chongqing Engineering Research Center for Pharmacological Evaluation, Chongqing 400715, China
- Engineering Research Center for Chongqing Pharmaceutical Process and Quality Control, Chongqing 400715, China
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Körner S, Thau-Habermann N, Kefalakes E, Bursch F, Petri S. Expression of the axon-guidance protein receptor Neuropilin 1 is increased in the spinal cord and decreased in muscle of a mouse model of amyotrophic lateral sclerosis. Eur J Neurosci 2019; 49:1529-1543. [PMID: 30589468 DOI: 10.1111/ejn.14326] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 12/05/2018] [Accepted: 12/13/2018] [Indexed: 12/11/2022]
Abstract
Amyotrophic Lateral Sclerosis (ALS) is a degenerative motor neuron disorder. It is supposed that ALS is at least in part an axonopathy. Neuropilin 1 is an important receptor of the axon repellent Semaphorin 3A and a co-receptor of vascular endothelial growth factor. It is probably involved in neuronal and axonal de-/regeneration and might be of high relevance for ALS pathogenesis and/or disease progression. To elucidate whether the expression of either Neuropilin1 or Semaphorin3A is altered in ALS we investigated these proteins in human brain, spinal cord and muscle tissue of ALS-patients and controls as well as transgenic SOD1G93A and control mice. Neuropilin1 and Semaphorin3A gene and protein expression were assessed by quantitative real-time PCR (qRT-PCR), western blot and immunohistochemistry. Groups were compared using either Student t-test or Mann-Whitney U test. We observed a consistent increase of Neuropilin1 expression in the spinal cord and decrease of Neuropilin1 and Semaphorin3A in muscle tissue of transgenic SOD1G93A mice at the mRNA and protein level. Previous studies have shown that damage of neurons physiologically causes Neuropilin1 and Semaphorin3A increase in the central nervous system and decrease in the peripheral nervous system. Our results indicate that this also occurs in ALS. Pharmacological modulation of expression and function of axon repellents could be a promising future therapeutic option in ALS.
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Affiliation(s)
- Sonja Körner
- Department of Neurology, Hannover Medical School, Hannover, Germany
| | | | - Ekaterini Kefalakes
- Department of Neurology, Hannover Medical School, Hannover, Germany.,Center for Systems Neuroscience (ZSN), Hannover, Germany
| | - Franziska Bursch
- Department of Neurology, Hannover Medical School, Hannover, Germany.,Center for Systems Neuroscience (ZSN), Hannover, Germany
| | - Susanne Petri
- Department of Neurology, Hannover Medical School, Hannover, Germany.,Center for Systems Neuroscience (ZSN), Hannover, Germany
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Up-Regulation of Cdc37 Contributes to Schwann Cell Proliferation and Migration After Sciatic Nerve Crush. Neurochem Res 2018; 43:1182-1190. [PMID: 29687307 DOI: 10.1007/s11064-018-2535-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 04/02/2018] [Accepted: 04/17/2018] [Indexed: 12/21/2022]
Abstract
Cell division cycle protein 37 (Cdc37), a molecular chaperone takes part in a series of cellular processes including cell signal transduction, cell cycle progression, cell proliferation, cell motility, oncogenesis and malignant progression. It can not only recruit immature protein kinases to HSP90 but also work alone. Cdc37 was reported to be associated with neurogenesis, neurite outgrowth, axon guidance and myelination. However, the roles of Cdc37 on Schwann cells (SC) after peripheral nerve injury (PNI) remain unknown. In this study, we found that the expression of Cdc37 increased and reached the peak at 1 week after sciatic nerve crush (SNC), which was consistent with that of proliferation cell nuclear antigen. Immunofluorescence verified that Cdc37 co-localized with SC in vivo and in vitro. Intriguingly, Cdc37 protein level was potentiated in the model of TNF-α-induced SC proliferation. Moreover, we found that Cdc37 silencing impaired proliferation of SC in vitro. Moreover, Cdc37 suppression attenuated kinase signaling pathways of Raf-ERK and PI3K/AKT which are crucial cell signaling for SC proliferation. Finally, we found that Cdc37 silencing inhibited SC migration in vitro. In conclusion, we demonstrated that the way Cdc37 contributed to SC proliferation is likely via activating kinase signaling pathways of Raf-ERK and PI3K/AKT, and CDC37 was also involved in SC migration after SNC.
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Huang MQ, Cao XY, Chen XY, Liu YF, Zhu SL, Sun ZL, Kong XB, Huo JR, Zhang S, Xu YQ. Saikosaponin a increases interleukin-10 expression and inhibits scar formation after sciatic nerve injury. Neural Regen Res 2018; 13:1650-1656. [PMID: 30127128 PMCID: PMC6126128 DOI: 10.4103/1673-5374.237139] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Nerve scarring after peripheral nerve injury can severely hamper nerve regeneration and functional recovery. Further, the anti-inflammatory cytokine, interleukin-10, can inhibit nerve scar formation. Saikosaponin a (SSa) is a monomer molecule extracted from the Chinese medicine, Bupleurum. SSa can exert anti-inflammatory effects in spinal cord injury and traumatic brain injury. However, it has not been shown whether SSa can play a role in peripheral nerve injury. In this study, rats were randomly assigned to three groups. In the sham group, the left sciatic nerve was directly sutured after exposure. In the sciatic nerve injury (SNI) + SSa and SNI groups, the left sciatic nerve was sutured and continuously injected daily with SSa (10 mg/kg) or an equivalent volume of saline for 7 days. Enzyme linked immunosorbent assay results demonstrated that at 7 days after injury, interleukin-10 level was considerably higher in the SNI + SSa group than in the SNI group. Masson staining and western blot assay demonstrated that at 8 weeks after injury, type I and III collagen content was lower and nerve scar formation was visibly less in the SNI + SSa group compared with the SNI group. Simultaneously, sciatic functional index and nerve conduction velocity were improved in the SNI + SSa group compared with the SNI group. These results confirm that SSa can increase the expression of the anti-inflammatory factor, interleukin-10, and reduce nerve scar formation to promote functional recovery of injured sciatic nerve.
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Affiliation(s)
- Meng-Qiang Huang
- Graduate School, Tianjin Medical University; Department of Orthopedics, Tianjin Medical University General Hospital, Tinajin, China
| | - Xiao-Yu Cao
- Department of Rehabilitation Medicine, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
| | - Xu-Yi Chen
- Tianjin Key Laboratory of Neurotrauma Repair, Institute of Traumatic Brain Injury and Neuroscience, Center for Neurology and Neurosurgery of Affiliated Hospital, Logistics University of Chinese People's Armed Police Force, Tianjin, China
| | - Ying-Fu Liu
- Science and Technology Experiment Center, Cangzhou Medical College, Cangzhou, Hebei Province, China
| | - Shuang-Long Zhu
- Graduate School, Tianjin Medical University; Department of Orthopedics, Tianjin Medical University General Hospital, Tinajin, China
| | - Zhong-Lei Sun
- Graduate School, Jinzhou Medical University, Jinzhou, Liaoning Province, China
| | - Xian-Bin Kong
- Graduate School, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Jing-Rui Huo
- Science and Technology Experiment Center, Cangzhou Medical College, Cangzhou, Hebei Province, China
| | - Sai Zhang
- Tianjin Key Laboratory of Neurotrauma Repair, Institute of Traumatic Brain Injury and Neuroscience, Center for Neurology and Neurosurgery of Affiliated Hospital, Logistics University of Chinese People's Armed Police Force, Tianjin, China
| | - Yun-Qiang Xu
- Graduate School, Tianjin Medical University; Department of Orthopedics, Tianjin Medical University General Hospital, Tinajin, China
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11
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Shah K, Rossie S. Tale of the Good and the Bad Cdk5: Remodeling of the Actin Cytoskeleton in the Brain. Mol Neurobiol 2017; 55:3426-3438. [PMID: 28502042 DOI: 10.1007/s12035-017-0525-3] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 04/06/2017] [Indexed: 11/24/2022]
Abstract
Cdk5 kinase, a cyclin-dependent kinase family member, is a key regulator of cytoskeletal remodeling in the brain. Cdk5 is essential for brain development during embryogenesis. After birth, it is essential for numerous neuronal processes such as learning and memory formation, drug addiction, pain signaling, and long-term behavior changes, all of which rely on rapid alterations in the cytoskeleton. Cdk5 activity is deregulated in various brain disorders including Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, and ischemic stroke, resulting in profound remodeling of the neuronal cytoskeleton, loss of synapses, and ultimately neurodegeneration. This review focuses on the "good and bad" Cdk5 in the brain and its pleiotropic contribution in regulating neuronal actin cytoskeletal remodeling. A vast majority of physiological and pathological Cdk5 substrates are associated with the actin cytoskeleton. Thus, our special emphasis is on the numerous Cdk5 substrates identified in the past two decades such as ephexin1, p27, Mst3, CaMKv, kalirin-7, RasGRF2, Pak1, WAVE1, neurabin-1, TrkB, 5-HT6R, talin, drebrin, synapsin I, synapsin III, CRMP1, GKAP, SPAR, PSD-95, and LRRK2. These substrates have unraveled the molecular mechanisms by which Cdk5 plays divergent roles in regulating neuronal actin cytoskeletal dynamics both in healthy and diseased states.
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Affiliation(s)
- Kavita Shah
- Department of Chemistry and Purdue University Center of Cancer Research, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA.
| | - Sandra Rossie
- Department of Biochemistry, Purdue University, West Lafayette, IN, 47907, USA
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12
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Gan S, Qiu S, Feng Y, Zhang Y, Qian Q, Wan Z, Tang J. Identification of genes associated with the effect of inflammation on the neurotransmission of vascular smooth muscle cell. Exp Ther Med 2017; 13:1303-1312. [PMID: 28413470 PMCID: PMC5377265 DOI: 10.3892/etm.2017.4138] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 12/09/2016] [Indexed: 01/23/2023] Open
Abstract
Vascular smooth muscle cell (VSMC) accumulation and hypertrophy are common in vascular disorders, and inflammation has a crucial role in the development of these diseases. To investigate the effect of inflammation on the neurotransmission of VSMC, bioinformatic analysis was performed, following next generation sequencing. Genes of lipopolysaccharide (LPS)-treated A7r5 cells and phosphate-buffered saline (PBS)-treated A7r5 cells were sequenced via next generation sequencing, and each assay was repeated three times. Differentially expressed genes (DEGs) were obtained using the NOISeq package in R. Subsequently, their potential functions were predicted by functional and pathway enrichment analyses using the Database for Annotation, Visualization and Integrated Discovery online tool. Interaction relationships of the proteins enriched in pathways associated with neurological diseases, the proteins which had interaction relationships with adrenoceptor α 1D (ADRA1D) or calcium voltage-gated channel subunit α1 S (CACNA1S), separately, were obtained from STRING, and protein-protein interaction (PPI) networks were constructed using Cytoscape software. A total of 2,038 DEGs, including 1,094 upregulated and 944 downregulated genes in the LPS treatment group were identified when compared with the control group. Enrichment analyses showed that NADH:Ubiquinone Oxidoreductase Core Subunit V2 (NDUFV2) was involved in several neurological diseases, including oxidative phosphorylation, Alzheimer's disease, Parkinson's disease and Huntington's disease. Furthermore, NDUFV2 (degree, 20) had a higher degree in the PPI network for DEGs enriched in pathways associated with neurological diseases. In the PPI network for ADRA1D, CACNA1S and the DEGs interacting with them, prohibitin (PHB), oxytocin receptor (OXTR), collapsin response mediator protein 1 (CRMP1) and dihydropyrimidinase like 2 (DPYSL2) had interaction relationships with both ADRA1D and CACNA1S. To conclude, the present study revealed that NDUFV2, PHB, OXTR, CRMP1 and DPYSL2 may have key roles in the effect of inflammation on neurotransmission of VSMC.
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Affiliation(s)
- Shujie Gan
- Department of Vascular Surgery, The First People's Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Shenlong Qiu
- Department of Vascular Surgery, The First People's Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Yiwen Feng
- Department of Vascular Surgery, The First People's Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Yanping Zhang
- Department of Vascular Surgery, The First People's Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Qin Qian
- Department of Vascular Surgery, The First People's Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Zhong Wan
- Department of Vascular Surgery, The First People's Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Jingdong Tang
- Department of Vascular Surgery, Shanghai Pudong Hospital, Fudan University, Pudong Medical Center, Shanghai 201399, P.R. China
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Yao L, Peng SX, Xu YD, Lin SL, Li YH, Liu CJ, Zhao HD, Wang LF, Shen YQ. Unexpected Neuroprotective Effects of Loganin on 1-Methyl-4-Phenyl-1,2,3,6-Tetrahydropyridine-Induced Neurotoxicity and Cell Death in Zebrafish. J Cell Biochem 2017; 118:615-628. [PMID: 27662601 DOI: 10.1002/jcb.25749] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 09/21/2016] [Indexed: 02/05/2023]
Abstract
1-methyl-4-phenyl-1,2,3,6 tetrahydropyridine (MPTP), which induces the pathological characteristics of Parkinson's disease in rodents, also specifically targets dopaminergic neurons in zebrafish embryos and larvae. Loganin, a traditional Chinese drug, was reported to regulate immune function and possess anti-inflammatory and anti-shock effects. Here, we investigate the role of loganin in MPTP-induced Parkinson-like abnormalities in zebrafish. MPTP treatment-induced abnormal development, in larvae, such as pericardium edema, increased yolk color, yolk sac edema, and retarded yolk sac resorption, as well as defects in brain development. Loganin could block MPTP-induced defects, with little toxicity to the eggs. Results of whole mount in situ hybridization showed loganin prevented the loss of both dopaminergic neurons and locomotor activity, exhibited by larvae treated with MPTP. In addition, loganin significantly rescued MPTP-induced neurotoxicity on PC12 cells, possibly through the suppression of PI3K/Akt/mTOR axis and JNK signaling pathways. In conclusion, loganin blocks MPTP-induced neurotoxicity and abnormal development in zebrafish. J. Cell. Biochem. 118: 615-628, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Li Yao
- Wuxi Medical College, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China
| | - Shi-Xiao Peng
- Wuxi Medical College, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China
| | - Yi-Da Xu
- Wuxi Medical College, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China
| | - Stanley Li Lin
- Department of Cell Biology, Shantou University Medical College, Shantou, Guangdong, 515041, People's Republic of China
| | - Yu-Hong Li
- Wuxi Medical College, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China
| | - Chun-Jie Liu
- Wuxi Medical College, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China
| | - Hou-De Zhao
- Wuxi Medical College, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China
| | - Lin-Fang Wang
- Wuxi Medical College, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China
| | - Yan-Qin Shen
- Wuxi Medical College, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China
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Liu Y, Wu W, Yang H, Zhou Z, Zhu X, Sun C, Liu Y, Yu Z, Chen Y, Wang Y. Upregulated Expression of TRIM32 Is Involved in Schwann Cell Differentiation, Migration and Neurite Outgrowth After Sciatic Nerve Crush. Neurochem Res 2016; 42:1084-1095. [DOI: 10.1007/s11064-016-2142-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 11/06/2016] [Accepted: 12/08/2016] [Indexed: 12/12/2022]
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15
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Lu H, Jiang R, Tao X, Duan C, Huang J, Huan W, He Y, Ge J, Ren J. Expression of Dixdc1 and its Role in Astrocyte Proliferation after Traumatic Brain Injury. Cell Mol Neurobiol 2016; 37:1131-1139. [PMID: 27873129 DOI: 10.1007/s10571-016-0446-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 11/10/2016] [Indexed: 01/02/2023]
Abstract
DIX domain containing 1 (Dixdc1), a positive regulator of Wnt signaling pathway, is recently reported to play a role in the neurogenesis. However, the distribution and function of Dixdc1 in the central nervous system (CNS) after brain injury are still unclear. We used an acute traumatic brain injury (TBI) model in adult rats to investigate whether Dixdc1 is involved in CNS injury and repair. Western blot analysis and immunohistochemistry showed a time-dependent up-regulation of Dixdc1 expression in ipsilateral cortex after TBI. Double immunofluorescent staining indicated a colocalization of Dixdc1 with astrocytes and neurons. Moreover, we detected a colocalization of Ki-67, a cell proliferation marker with GFAP and Dixdc1 after TBI. In primary cultured astrocytes stimulated with lipopolysaccharide, we found enhanced expression of Dixdc1 in parallel with up-regulation of Ki-67 and cyclin A, another cell proliferation marker. In addition, knockdown of Dixdc1 expression in primary astrocytes with Dixdc1-specific siRNA transfection induced G0/G1 arrest of cell cycle and significantly decreased cell proliferation. In conclusion, all these data suggest that up-regulation of Dixdc1 protein expression is potentially involved in astrocyte proliferation after traumatic brain injury in the rat.
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Affiliation(s)
- Hongjian Lu
- Department of Neurosurgery, Affiliated Nantong Second People's Hospital of Nantong University, 43 Xinglong Road, Nantong, 226001, Jiangsu Province, China.
| | - Rui Jiang
- Department of Neurosurgery, The Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, 226001, Jiangsu Province, China
| | - Xuelei Tao
- Department of Neurosurgery, Affiliated Nantong Second People's Hospital of Nantong University, 43 Xinglong Road, Nantong, 226001, Jiangsu Province, China
| | - Chengwei Duan
- Department of Neurosurgery, Affiliated Nantong Second People's Hospital of Nantong University, 43 Xinglong Road, Nantong, 226001, Jiangsu Province, China
| | - Jie Huang
- Department of Neurosurgery, The Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, 226001, Jiangsu Province, China
| | - Wei Huan
- Department of Neurosurgery, The Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, 226001, Jiangsu Province, China
| | - Yunfen He
- Department of Neurosurgery, The Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, 226001, Jiangsu Province, China
| | - Jianbin Ge
- Department of Neurosurgery, Affiliated Nantong Second People's Hospital of Nantong University, 43 Xinglong Road, Nantong, 226001, Jiangsu Province, China
| | - Jianbing Ren
- Department of Neurosurgery, Affiliated Nantong Second People's Hospital of Nantong University, 43 Xinglong Road, Nantong, 226001, Jiangsu Province, China
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16
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Yan D, Liu X, Hua L, Wu K, Sha X, Zhao J, Yang C, Zhang C, Shi J, Wu X. MMP-14 promotes VSMC migration via up-regulating CD44 expression in cardiac allograft vasculopathy. Pathol Res Pract 2016; 212:1119-1125. [PMID: 27712978 DOI: 10.1016/j.prp.2016.09.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 07/22/2016] [Accepted: 09/19/2016] [Indexed: 02/03/2023]
Abstract
Cardiac allograft vasculopathy (CAV) was the leading cause of late death in heart transplantation recipients. Matrix metalloproteinase-14 (MMP-14), as a member of the MMPs family, has been reported to play a vital role in coronary vascular lesions of allotransplanted hearts. However, concrete mechanism is still unclear. Herein, we showed that the expression of MMP-14 was different between isografts and allografts. Interestingly, we found MMP-14 could interact with CD44 in allografts. Cluster of differentiation 44 (CD44), as a cell adhesion receptor and is involved in cell migration, caused our interest in MMP-14/CD44 complex in allografts. Then we analyzed the effect of MMP-14/CD44 complex on pro-MMP-9 activation and vascular smooth muscle cell (VSMC) migration in rat VSMC TNF-α treated model. Then, we further found intervention of MMP-14/CD44 complex could inhibit VSMC migration. Our results elucidate the molecular mechanism of VSMC migration after cardiac transplantation and provide theoretical basis for seeking new specific drug targets for CAV prevention and treatment.
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Affiliation(s)
- Daliang Yan
- Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, PR China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College, Nantong University, Nantong, Jiangsu 226001, PR China
| | - Xiaojuan Liu
- Department of Pathogen Biology, Medical College, Nantong University, Nantong, Jiangsu 226001, PR China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College, Nantong University, Nantong, Jiangsu 226001, PR China
| | - Lu Hua
- Department of Radiotherapy, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, PR China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College, Nantong University, Nantong, Jiangsu 226001, PR China
| | - Kunpeng Wu
- Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, PR China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College, Nantong University, Nantong, Jiangsu 226001, PR China
| | - Xilin Sha
- Department of Thoracic Surgery, Rugao People's Hospital, Rugao, Jiangsu 226500, PR China
| | - Jianhua Zhao
- Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, PR China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College, Nantong University, Nantong, Jiangsu 226001, PR China
| | - Chen Yang
- Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, PR China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College, Nantong University, Nantong, Jiangsu 226001, PR China
| | - Chao Zhang
- Department of Vasculocardiology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, PR China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College, Nantong University, Nantong, Jiangsu 226001, PR China
| | - Jiahai Shi
- Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, PR China.
| | - Xiang Wu
- Department of Vasculocardiology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, PR China.
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17
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Liu X, Yan D, Li Y, Sha X, Wu K, Zhao J, Yang C, Zhang C, Shi J, Wu X. Erythroblast transformation-specific 2 correlates with vascular smooth muscle cell apoptosis in rat heterotopic heart transplantation model. J Thorac Dis 2016; 8:2027-37. [PMID: 27621856 DOI: 10.21037/jtd.2016.07.24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Cardiac allograft vasculopathy (CAV) decreases the long-term survival of heart transplantation recipients. Vascular smooth muscle cell (VSMC) apoptosis is an important pathological feature of CAV. Erythroblast transformation-specific 2 (Ets-2), as a transcription factor, participates in cell apoptosis and plays an important role in organ transplantation. METHODS Hearts from Wistar-Furth (WF:RT1u) rats were heterotopically transplanted into Lewis (Lew:RT1(l)) rats without immunosuppression. Additional syngeneic heterotopic cardiac transplantations were performed in Lewis rats. HE staining was used to identify CAV. Ets-2 expression was examined by western blot. Ets-2 tissue location was examined by immunohistochemical assay and double immunostaining. Cleaved caspase 3 expression was detected by western blot. Co-localization of Ets-2 and cleaved caspase 3 was detected by double immunostaining. Ets-2, p53, cleaved caspase 3 and Bcl-xl expression in rat VSMC line A7R5 was examined after Ets-2 siRNA transfection. TUNEL assay was applied to detect A7R5 apoptosis with or without ETS-2 siRNA transfection. Immunoprecipitation was performed to explore the interaction between Ets-2 and p53. RESULTS Ets-2 expression decreased in the allograft group but had no obvious change in the isograft group. Meanwhile, the phenomenon of CAV was observed in the allograft group and there is neointima formation in the isograft group which is not obvious compared with allograft group. Additionally, Ets-2 expression was opposite to VSMC apoptosis in the allograft group. In vitro, Ets-2 siRNA transfection in A7R5cells resulted in enhanced cell apoptosis. Finally, Ets-2 interacted with p53. CONCLUSIONS Ets-2 might inhibit VSMC apoptosis via p53 pathway. The results further elucidate the molecular mechanism of VSMC apoptosis after heart transplantation during CAV and provide theoretical basis for seeking new specific drug targets for CAV prevention and treatment.
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Affiliation(s)
- Xiaojuan Liu
- Department of Pathogen Biology, Medical College, Nantong University, Nantong 226001, China;; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College, Nantong University, Nantong 226001, China
| | - Daliang Yan
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College, Nantong University, Nantong 226001, China;; Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Yangcheng Li
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College, Nantong University, Nantong 226001, China;; Department of Thoracic Surgery, Affiliated Cancer Hospital of Nantong University, Nantong 226361, China
| | - Xilin Sha
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College, Nantong University, Nantong 226001, China;; Department of Thoracic Surgery, Rugao People's Hospital, Rugao 226500, China
| | - Kunpeng Wu
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College, Nantong University, Nantong 226001, China;; Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Jianhua Zhao
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College, Nantong University, Nantong 226001, China;; Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Chen Yang
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College, Nantong University, Nantong 226001, China;; Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Chao Zhang
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College, Nantong University, Nantong 226001, China;; Department of Vasculocardiology, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Jiahai Shi
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College, Nantong University, Nantong 226001, China;; Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Xiang Wu
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College, Nantong University, Nantong 226001, China;; Department of Vasculocardiology, Affiliated Hospital of Nantong University, Nantong 226001, China
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18
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Dixdc1 targets CyclinD1 and p21 via PI3K pathway activation to promote Schwann cell proliferation after sciatic nerve crush. Biochem Biophys Res Commun 2016; 478:956-63. [DOI: 10.1016/j.bbrc.2016.08.058] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 08/08/2016] [Indexed: 12/30/2022]
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19
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Wu W, Liu Y, Wang Y. Sam68 promotes Schwann cell proliferation by enhancing the PI3K/Akt pathway and acts on regeneration after sciatic nerve crush. Biochem Biophys Res Commun 2016; 473:1045-1051. [DOI: 10.1016/j.bbrc.2016.04.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 04/04/2016] [Indexed: 12/14/2022]
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20
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Zhang W, Liu Y, Zhu X, Cao Y, Liu Y, Mao X, Yang H, Zhou Z, Wang Y, Shen A. SCY1-Like 1-Binding Protein 1 (SCYL1BP1) Suppressed Sciatic Nerve Regeneration by Enhancing the RhoA Pathway. Mol Neurobiol 2015; 53:6342-6354. [PMID: 26572638 DOI: 10.1007/s12035-015-9531-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Accepted: 11/08/2015] [Indexed: 12/13/2022]
Abstract
SCY1-like 1-binding protein 1 (SCYL1BP1) is first identified as an interacting protein with SCYL1. Since SCYL1BP1 is a soluble protein with coiled-coil domains known to be relevant with transcriptional regulation, it has been found to activate the transcription of murine double minute 2 (MDM2) and participate in neurite outgrowth and regeneration. However, the role and mechanism of SCYL1BP1 in peripheral nerve system lesion and repair are still unknown. Here in vitro, our work demonstrated that SCYL1BP1 inhibited cAMP-induced primary Schwann cell differentiation and suppressed nerve growth factor-mediated neurite outgrowth in PC12 cells by enhancing the RhoA pathway. Furthermore, we found that pretreatment with a Rho kinase inhibitor Y-27632 resulted in partial rescue of Schwann cell differentiation and neurite outgrowth. In vivo experiments showed that SCYL1BP1 could also suppress nerve fiber regeneration. In conclusion, we speculated that SCYL1BP1 participated in Schwann cell (SC) differentiation and neurite outgrowth in the sciatic nerve after crush by regulating the RhoA pathway.
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Affiliation(s)
- Weidong Zhang
- Department of Orthopaedics, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Yonghua Liu
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, Jiangsu, 226001, People's Republic of China
| | - Xudong Zhu
- Medical College, Nantong University, 19 Qi-Xiu Road, Nantong, 226001, Jiangsu Province, People's Republic of China
| | - Yi Cao
- Department of Orthopaedics, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Yang Liu
- Department of Orthopaedics, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China.,Department of Pathogen Biology, Medical College, Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Xingxing Mao
- Department of Orthopaedics, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Huiguang Yang
- Department of Orthopaedics, Affiliated Jiangyin Hospital of Nantong University, Nantong, Jiangsu, 226001, People's Republic of China
| | - Zhengming Zhou
- Department of Orthopaedics, Affiliated Jiangyin Hospital of Nantong University, Nantong, Jiangsu, 226001, People's Republic of China
| | - Youhua Wang
- Department of Orthopaedics, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China.
| | - Aiguo Shen
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, Jiangsu, 226001, People's Republic of China.
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