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Hu J, Yang W, Wang K, Xu H, Chen T, Li C, Xiong T, Xu H, Luo M, Zhang S, Yan J. Anlotinib induces neuronal-like differentiation of neuroblastoma by downregulating CRMP5. Mol Carcinog 2024; 63:1559-1571. [PMID: 38780126 DOI: 10.1002/mc.23745] [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: 01/18/2024] [Revised: 03/22/2024] [Accepted: 05/07/2024] [Indexed: 05/25/2024]
Abstract
The therapeutic effect of anlotinib on neuroblastoma is still not fully understood. This study aims to explore the differentiation therapeutic effects of anlotinib on neuroblastoma and its potential association with the neural development regulatory protein collapsin response mediator protein 5 (CRMP5), both in vivo and in vitro. A patient-derived xenograft (PDX) model was established to observe the therapeutic effect of anlotinib. Neuroblastoma cell lines SK-N-SH and SK-N-AS were cultured to observe the morphological impact of anlotinib. Transwell assay was used to evaluate the cell invasion, and Western blot analysis and immunohistochemistry were employed to detect the expressions of neuronal differentiation-related proteins. Results indicate that anlotinib effectively inhibited tumor growth in the PDX model, modulated the expressions of neuronal differentiation markers. In vitro, anlotinib treatment induced neurite outgrowth in neuroblastoma cells and inhibited their invasive ability, reflecting a change in neuronal marker expression patterns consistent with the PDX model. Similarly, in the SK-N-AS mouse xenograft model, anlotinib demonstrated comparable tumor-suppressing effects and promoted neuronal-like differentiation. Additionally, anlotinib significantly downregulated CRMP5 expression in neuroblastoma both in vivo and in vitro. Overexpression of CRMP5 significantly reversed the differentiation therapy effect of anlotinib, exacerbating the aggressiveness and reducing the differentiation level of neuroblastoma. These findings highlight the potential of anlotinib as an anti-neuroblastoma agent. It may suppress tumor proliferation and invasion by promoting the differentiation of tumor cells towards a neuronal-like state, and this differentiation therapy effect involves the inhibition of CRMP5 signaling.
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Affiliation(s)
- Junwen Hu
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Wenlong Yang
- Department of Infectious Diseases, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Kang Wang
- Department of Traditional Chinese Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Hongyan Xu
- Department of General Surgery, The Affiliated Children's Hospital of Nanchang Medical College, Nangchang, China
- Department of General Surgery, Jiangxi Provincial Children's Hospital, Nanchang, Jiangxi, China
| | - Tianxiang Chen
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Chao Li
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Ting Xiong
- Department of General Surgery, Jiangxi Provincial Children's Hospital, Nanchang, Jiangxi, China
| | - Han Xu
- Department of General Surgery, Jiangxi Provincial Children's Hospital, Nanchang, Jiangxi, China
| | - Ming Luo
- Department of General Surgery, Jiangxi Provincial Children's Hospital, Nanchang, Jiangxi, China
| | - Shouhua Zhang
- Department of General Surgery, The Affiliated Children's Hospital of Nanchang Medical College, Nangchang, China
- Department of General Surgery, Jiangxi Provincial Children's Hospital, Nanchang, Jiangxi, China
| | - Jinlong Yan
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
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Chen T, Chen Z, Wu P, Luo J, Liu Q, Yang H, Peng C, Zhang G, Lin H, Ji Z. The Interaction between ADK and SCG10 Regulate the Repair of Nerve Damage. Neuroscience 2024; 544:75-87. [PMID: 38423163 DOI: 10.1016/j.neuroscience.2024.02.023] [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: 07/24/2023] [Revised: 02/22/2024] [Accepted: 02/23/2024] [Indexed: 03/02/2024]
Abstract
The cytoskeleton must be remodeled during neurite outgrowth, and Superior Cervical Ganglion 10 (SCG10) plays a critical role in this process by depolymerizing Microtubules (MTs), conferring highly dynamic properties to the MTs. However, the precise mechanism of action of SCG10 in the repair of injured neurons remains largely uncertain. Using transcriptomic identification, we discovered that SCG10 expression was downregulated in neurons after Spinal Cord Injury (SCI). Additionally, through mass spectrometry identification, immunoprecipitation, and pull-down assays, we established that SCG10 could interact with Adenosine Kinase (ADK). Furthermore, we developed an excitotoxicity-induced neural injury model and discovered that ADK suppressed injured neurite re-growth, whereas, through overexpression and small molecule interference experiments, SCG10 enhanced it. Moreover, we discovered ADK to be the upstream of SCG10. More importantly, the application of the ADK inhibitor called 5-Iodotubercidin (5-ITu) was found to significantly enhance the recovery of motor function in mice with SCI. Consequently, our findings suggest that ADK plays a negative regulatory role in the repair of injured neurons. Herein, we propose a molecular interaction model of the SCG10-ADK axis to regulate neuronal recovery.
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Affiliation(s)
- Tianjun Chen
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangdong Province, Guangzhou 510630, People's Republic of China
| | - Zhiwan Chen
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangdong Province, Guangzhou 510630, People's Republic of China
| | - Ping Wu
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangdong Province, Guangzhou 510630, People's Republic of China
| | - Jianxian Luo
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangdong Province, Guangzhou 510630, People's Republic of China
| | - Qiuling Liu
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangdong Province, Guangzhou 510630, People's Republic of China
| | - Hua Yang
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangdong Province, Guangzhou 510630, People's Republic of China
| | - Cheng Peng
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangdong Province, Guangzhou 510630, People's Republic of China
| | - Guowei Zhang
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangdong Province, Guangzhou 510630, People's Republic of China
| | - Hongsheng Lin
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangdong Province, Guangzhou 510630, People's Republic of China
| | - Zhisheng Ji
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangdong Province, Guangzhou 510630, People's Republic of China.
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Smart K, Sharp DJ. The fidgetin family: Shaking things up among the microtubule-severing enzymes. Cytoskeleton (Hoboken) 2024; 81:151-166. [PMID: 37823563 DOI: 10.1002/cm.21799] [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: 07/14/2023] [Revised: 09/23/2023] [Accepted: 09/25/2023] [Indexed: 10/13/2023]
Abstract
The microtubule cytoskeleton is required for several crucial cellular processes, including chromosome segregation, cell polarity and orientation, and intracellular transport. These functions rely on microtubule stability and dynamics, which are regulated by microtubule-binding proteins (MTBPs). One such type of regulator is the microtubule-severing enzymes (MSEs), which are ATPases Associated with Diverse Cellular Activities (AAA+ ATPases). The most recently identified family are the fidgetins, which contain three members: fidgetin, fidgetin-like 1 (FL1), and fidgetin-like 2 (FL2). Of the three known MSE families, the fidgetins have the most diverse range of functions in the cell, spanning mitosis/meiosis, development, cell migration, DNA repair, and neuronal function. Furthermore, they offer intriguing novel therapeutic targets for cancer, cardiovascular disease, and wound healing. In the two decades since their first report, there has been great progress in our understanding of the fidgetins; however, there is still much left unknown about this unusual family. This review aims to consolidate the present body of knowledge of the fidgetin family of MSEs and to inspire deeper exploration into the fidgetins and the MSEs as a whole.
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Affiliation(s)
- Karishma Smart
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York, USA
| | - David J Sharp
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York, USA
- Microcures, Inc., Bronx, New York, USA
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4
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Jin Z, Zhang ZC, Xiao CY, Li MQ, Li QR, Gao LL. CRMP5 participates in oocyte meiosis by regulating spastin to correct microtubule-kinetochore misconnection. ZYGOTE 2024; 32:21-27. [PMID: 38047349 DOI: 10.1017/s0967199423000564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
Our previous studies have suggested that spastin, which aggregates on spindle microtubules in oocytes, may promote the assembly of mouse oocyte spindles by cutting microtubules. This action may be related to CRMP5, as knocking down CRMP5 results in reduced spindle microtubule density and maturation defects in oocytes. In this study, we found that, after knocking down CRMP5 in oocytes, spastin distribution shifted from the spindle to the spindle poles and errors in microtubule-kinetochore attachment appeared in oocyte spindles. However, CRMP5 did not interact with the other two microtubule-severing proteins, katanin-like-1 (KATNAL1) and fidgetin-like-1 (FIGNL1), which aggregate at the spindle poles. We speculate that, in oocytes, due to the reduction of spastin distribution on chromosomes after knocking down CRMP5, microtubule-kinetochore errors cannot be corrected through severing, resulting in meiotic division abnormalities and maturation defects in oocytes. This finding provides new insights into the regulatory mechanisms of spastin in oocytes and important opportunities for the study of meiotic division mechanisms.
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Affiliation(s)
- Zhen Jin
- Center for Reproductive Medicine, Department of Reproductive Endocrinology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Zhi-Cai Zhang
- Department of Dispatching Management, Zibo Medical Emergency Command Center, Zibo, Shandong, 255030, China
| | - Chen-Yu Xiao
- Center for Reproductive Medicine, Department of Gynecology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Mei-Qi Li
- Center for Reproductive Medicine, Department of Gynecology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Qian-Ru Li
- Center for Reproductive Medicine, Department of Gynecology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Lei-Lei Gao
- Center for Reproductive Medicine, Department of Gynecology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
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5
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Kaarijärvi R, Kaljunen H, Nappi L, Fazli L, Kung SHY, Hartikainen JM, Paakinaho V, Capra J, Rilla K, Malinen M, Mäkinen PI, Ylä-Herttuala S, Zoubeidi A, Wang Y, Gleave ME, Hiltunen M, Ketola K. DPYSL5 is highly expressed in treatment-induced neuroendocrine prostate cancer and promotes lineage plasticity via EZH2/PRC2. Commun Biol 2024; 7:108. [PMID: 38238517 PMCID: PMC10796342 DOI: 10.1038/s42003-023-05741-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 12/22/2023] [Indexed: 01/22/2024] Open
Abstract
Treatment-induced neuroendocrine prostate cancer (t-NEPC) is a lethal subtype of castration-resistant prostate cancer resistant to androgen receptor (AR) inhibitors. Our study unveils that AR suppresses the neuronal development protein dihydropyrimidinase-related protein 5 (DPYSL5), providing a mechanism for neuroendocrine transformation under androgen deprivation therapy. Our unique CRPC-NEPC cohort, comprising 135 patient tumor samples, including 55 t-NEPC patient samples, exhibits a high expression of DPYSL5 in t-NEPC patient tumors. DPYSL5 correlates with neuroendocrine-related markers and inversely with AR and PSA. DPYSL5 overexpression in prostate cancer cells induces a neuron-like phenotype, enhances invasion, proliferation, and upregulates stemness and neuroendocrine-related markers. Mechanistically, DPYSL5 promotes prostate cancer cell plasticity via EZH2-mediated PRC2 activation. Depletion of DPYSL5 decreases proliferation, induces G1 phase cell cycle arrest, reverses neuroendocrine phenotype, and upregulates luminal genes. In conclusion, DPYSL5 plays a critical role in regulating prostate cancer cell plasticity, and we propose the AR/DPYSL5/EZH2/PRC2 axis as a driver of t-NEPC progression.
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Affiliation(s)
- Roosa Kaarijärvi
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - Heidi Kaljunen
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - Lucia Nappi
- The Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Ladan Fazli
- The Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Sonia H Y Kung
- The Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Jaana M Hartikainen
- Institute of Clinical Medicine, Clinical Pathology and Forensic Medicine, University of Eastern Finland, Kuopio, Finland
| | - Ville Paakinaho
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - Janne Capra
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - Kirsi Rilla
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - Marjo Malinen
- Department of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Finland
| | - Petri I Mäkinen
- A.I. Virtanen Institute, University of Eastern Finland, Kuopio, Finland
| | | | - Amina Zoubeidi
- The Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Yuzhuo Wang
- The Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
- BC Cancer Research Centre, Vancouver, BC, Canada
| | - Martin E Gleave
- The Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Mikko Hiltunen
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - Kirsi Ketola
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland.
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Liu Q, Yang H, Luo J, Peng C, Wang K, Zhang G, Lin H, Ji Z. 14-3-3 protein augments the protein stability of phosphorylated spastin and promotes the recovery of spinal cord injury through its agonist intervention. eLife 2024; 12:RP90184. [PMID: 38231910 PMCID: PMC10945579 DOI: 10.7554/elife.90184] [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] [Indexed: 01/19/2024] Open
Abstract
Axon regeneration is abortive in the central nervous system following injury. Orchestrating microtubule dynamics has emerged as a promising approach to improve axonal regeneration. The microtubule severing enzyme spastin is essential for axonal development and regeneration through remodeling of microtubule arrangement. To date, however, little is known regarding the mechanisms underlying spastin action in neural regeneration after spinal cord injury. Here, we use glutathione transferase pulldown and immunoprecipitation assays to demonstrate that 14-3-3 interacts with spastin, both in vivo and in vitro, via spastin Ser233 phosphorylation. Moreover, we show that 14-3-3 protects spastin from degradation by inhibiting the ubiquitination pathway and upregulates the spastin-dependent severing ability. Furthermore, the 14-3-3 agonist Fusicoccin (FC-A) promotes neurite outgrowth and regeneration in vitro which needs spastin activation. Western blot and immunofluorescence results revealed that 14-3-3 protein is upregulated in the neuronal compartment after spinal cord injury in vivo. In addition, administration of FC-A not only promotes locomotor recovery, but also nerve regeneration following spinal cord injury in both contusion and lateral hemisection models; however, the application of spastin inhibitor spastazoline successfully reverses these phenomena. Taken together, these results indicate that 14-3-3 is a molecular switch that regulates spastin protein levels, and the small molecule 14-3-3 agonist FC-A effectively mediates the recovery of spinal cord injury in mice which requires spastin participation.
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Affiliation(s)
- Qiuling Liu
- Department of Orthopedics, The First Affiliated Hospital of Jinan UniversityGuangzhouChina
| | - Hua Yang
- Department of Orthopedics, The First Affiliated Hospital of Jinan UniversityGuangzhouChina
| | - Jianxian Luo
- Department of Orthopedics, The First Affiliated Hospital of Jinan UniversityGuangzhouChina
| | - Cheng Peng
- Department of Orthopedics, The First Affiliated Hospital of Jinan UniversityGuangzhouChina
| | - Ke Wang
- Department of Orthopedics, The First Affiliated Hospital of Jinan UniversityGuangzhouChina
| | - Guowei Zhang
- Department of Orthopedics, The First Affiliated Hospital of Jinan UniversityGuangzhouChina
| | - Hongsheng Lin
- Department of Orthopedics, The First Affiliated Hospital of Jinan UniversityGuangzhouChina
| | - Zhisheng Ji
- Department of Orthopedics, The First Affiliated Hospital of Jinan UniversityGuangzhouChina
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7
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Ma C, Wang J, Tu Q, Bo W, Hu Z, Zhuo R, Wu R, Dong Z, Qiang L, Liu Y, Liu M. Fidgetin interacting with microtubule end binding protein EB3 affects axonal regrowth in spinal cord injury. Neural Regen Res 2023; 18:2727-2732. [PMID: 37449637 DOI: 10.4103/1673-5374.373716] [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: 07/18/2023] Open
Abstract
Fidgetin, a microtubule-severing enzyme, regulates neurite outgrowth, axonal regeneration, and cell migration by trimming off the labile domain of microtubule polymers. Because maintenance of the microtubule labile domain is essential for axon initiation, elongation, and navigation, it is of interest to determine whether augmenting the microtubule labile domain via depletion of fidgetin serves as a therapeutic approach to promote axonal regrowth in spinal cord injury. In this study, we constructed rat models of spinal cord injury and sciatic nerve injury. Compared with spinal cord injury, we found that expression level of tyrosinated microtubules in the labile portion of microtubules continuously increased, whereas fidgetin decreased after peripheral nerve injury. Depletion of fidgetin enhanced axon regeneration after spinal cord injury, whereas expression level of end binding protein 3 (EB3) markedly increased. Next, we performed RNA interference to knockdown EB3 or fidgetin. We found that deletion of EB3 did not change fidgetin expression. Conversely, deletion of fidgetin markedly increased expression of tyrosinated microtubules and EB3. Deletion of fidgetin increased the amount of EB3 at the end of neurites and thereby increased the level of tyrosinated microtubules. Finally, we deleted EB3 and overexpressed fidgetin. We found that fidgetin trimmed tyrosinated tubulins by interacting with EB3. When fidgetin was deleted, the labile portion of microtubules was elongated, and as a result the length of axons and number of axon branches were increased. These findings suggest that fidgetin can be used as a novel therapeutic target to promote axonal regeneration after spinal cord injury. Furthermore, they reveal an innovative mechanism by which fidgetin preferentially severs labile microtubules.
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Affiliation(s)
- Chao Ma
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University; Medical School of Nantong University, Nantong, Jiangsu Province, China
| | - Junpei Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu Province, China
| | - Qifeng Tu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu Province, China
| | - Weijuan Bo
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu Province, China
| | - Zunlu Hu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu Province, China
| | - Run Zhuo
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu Province, China
| | - Ronghua Wu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu Province, China
| | - Zhangji Dong
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu Province, China
| | - Liang Qiang
- Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Yan Liu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu Province, China
| | - Mei Liu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu Province, China
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8
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Atkins M, Nicol X, Fassier C. Microtubule remodelling as a driving force of axon guidance and pruning. Semin Cell Dev Biol 2023; 140:35-53. [PMID: 35710759 DOI: 10.1016/j.semcdb.2022.05.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 04/26/2022] [Accepted: 05/31/2022] [Indexed: 01/28/2023]
Abstract
The establishment of neuronal connectivity relies on the microtubule (MT) cytoskeleton, which provides mechanical support, roads for axonal transport and mediates signalling events. Fine-tuned spatiotemporal regulation of MT functions by tubulin post-translational modifications and MT-associated proteins is critical for the coarse wiring and subsequent refinement of neuronal connectivity. The defective regulation of these processes causes a wide range of neurodevelopmental disorders associated with connectivity defects. This review focuses on recent studies unravelling how MT composition, post-translational modifications and associated proteins influence MT functions in axon guidance and/or pruning to build functional neuronal circuits. We here summarise experimental evidence supporting the key role of this network as a driving force for growth cone steering and branch-specific axon elimination. We further provide a global overview of the MT-interactors that tune developing axon behaviours, with a special emphasis on their emerging versatility in the regulation of MT dynamics/structure. Recent studies establishing the key and highly selective role of the tubulin code in the regulation of MT functions in axon pathfinding are also reported. Finally, our review highlights the emerging molecular links between these MT regulation processes and guidance signals that wire the nervous system.
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Affiliation(s)
- Melody Atkins
- INSERM, UMR-S 1270, Institut du Fer à Moulin, Sorbonne Université, F-75005 Paris, France
| | - Xavier Nicol
- Institut de la Vision, Sorbonne Université, INSERM, CNRS, F-75012 Paris, France
| | - Coralie Fassier
- Institut de la Vision, Sorbonne Université, INSERM, CNRS, F-75012 Paris, France.
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9
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Yang Y, Yang J, Liang Y, Zhang G, Cai Z, Zhang Y, Lin H, Tan M. Rab3A interacts with spastin to regulate neurite outgrowth in hippocampal neurons. Biochem Biophys Res Commun 2023; 643:77-87. [PMID: 36587525 DOI: 10.1016/j.bbrc.2022.12.066] [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: 12/07/2022] [Revised: 12/19/2022] [Accepted: 12/22/2022] [Indexed: 12/24/2022]
Abstract
Investigating novel mechanisms of neurite outgrowth via cytoskeleton is critical for developing therapeutic strategies against neural disorders. Rab3A is a vesicle-related protein distributed throughout the nervous system, but the detailed mechanism related to cytoskeleton remains largely unknown. Our previous reports show that spastin serves microtubule to regulate neurite outgrowth. Here, we asked whether Rab3A could function via modulating spastin during neuronal development. The results revealed that Rab3A colocalized with spastin in cultured hippocampal neurons. Immunoprecipitation assays showed that Rab3A physically interacted with spastin in rat brain lysates. Rab3A overexpression significantly induced spastin degradation; this effect was reversed by leupeptin- or MG-132- administration, suggesting the lysosomal and ubiquitin-mediated degradation system. Immunofluorescence staining further confirmed that Rab3A and spastin immune-colocalized with the lysosome marker lysotracker. In COS7 cells, Rab3A overexpression significantly downregulated spastin expression and abolished the spastin-mediated microtubule severing. Furthermore, overexpression inhibited while genetic knockdown of Rab3A promoted neurite outgrowth. However, this inhibitory effect on neurite outgrowth in hippocampal neurons could be reversed via co-transfection of spastin, indicating that Rab3A functions via its interaction protein spastin. In general, our data identify an interaction between Rab3A and spastin, and this interaction affects the protein stability of spastin and eliminates its microtubule severing function, thereby modulating neurite outgrowth.
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Affiliation(s)
- Yuhao Yang
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, 510630, China
| | - Jie Yang
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, 510630, China
| | - Yaozhong Liang
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, 510630, China
| | - Guowei Zhang
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, 510630, China
| | - Zhenbin Cai
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, 510630, China
| | - Yunlong Zhang
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, 510630, China
| | - Hongsheng Lin
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, 510630, China.
| | - Minghui Tan
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, 510630, China.
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10
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Zhang Y, He X, Zou J, Yang J, Ma A, Tan M. Phosphorylation mutation impairs the promoting effect of spastin on neurite outgrowth without affecting its microtubule severing ability. Eur J Histochem 2023; 67. [PMID: 36632786 DOI: 10.4081/ejh.2023.3594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 12/27/2022] [Indexed: 01/13/2023] Open
Abstract
Spastin, a microtubule-severing enzyme, is known to be important for neurite outgrowth. However, the role of spastin post-translational modification, particularly its phosphorylation regulation in neuronal outgrowth, remains unclear. This study aimed to investigate the effects of eliminating spastin phosphorylation on the neurite outgrowth of rat hippocampal neurons. To accomplish this, we constructed a spastin mutant with eleven potential phosphorylation sites mutated to alanine. The phosphorylation levels of the wildtype spastin (WT) and the mutant (11A) were then detected using Phos-tag SDS-PAGE. The spastin constructs were transfected into COS7 cells for the observation of microtubule severing, and into rat hippocampal neurons for the detection of neuronal outgrowth. The results showed that compared to the spastin WT, the phosphorylation levels were significantly reduced in the spastin 11A mutant. The spastin mutant 11A impaired its ability to promote neurite length, branching, and complexity in hippocampal neurons, but did not affect its ability to sever microtubules in COS7 cells. In conclusion, the data suggest that mutations at multiple phosphorylation sites of spastin do not impair its microtubule cleavage ability in COS7 cells, but reduce its ability to promote neurite outgrowth in rat hippocampal neurons.
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Affiliation(s)
- Yunlong Zhang
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou.
| | - Xin He
- Clinical Laboratory Center, The First Affiliated Hospital of Jinan University, Guangzhou.
| | - Jianyu Zou
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou.
| | - Jie Yang
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou.
| | | | - Minghui Tan
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou.
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Luo J, Xie M, Peng C, Ma Y, Wang K, Lin G, Yang H, Chen T, Liu Q, Zhang G, Lin H, Ji Z. Protein disulfide isomerase A6 promotes the repair of injured nerve through interactions with spastin. Front Mol Neurosci 2022; 15:950586. [PMID: 36090256 PMCID: PMC9449696 DOI: 10.3389/fnmol.2022.950586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 07/18/2022] [Indexed: 11/30/2022] Open
Abstract
The maintenance of appropriate endoplasmic reticulum (ER) homeostasis is critical to effective spinal cord injury (SCI) repair. In previous reports, protein disulfide isomerase A6 (PDIA6) demonstrated to serve as a reversible functional modulator of ER stress responses, while spastin can coordinate ER organization through the modulation of the dynamic microtubule network surrounding this organelle. While both PDIA6 and spastin are thus important regulators of the ER, whether they interact with one another for SCI repair still needs to be determined. Here a proteomics analysis identified PDIA6 as being related to SCI repair, and protein interaction mass spectrometry further confirmed the ability of PDIA6 and spastin to interact with one another. Pull-down and co-immunoprecipitation assays were further performed to validate and characterize the interactions between these two proteins. The RNAi-based knockdown of PDIA6 in COS-7 cells inhibited the activity of spastin-dependent microtubule severing. PDIA6 was also found to promote injured neuron repair, while spastin knockdown reversed this reparative activity. Together, these results thus confirm that PDIA6 and spastin function together as critical mediators of nerve repair, highlighting their potential value as validated targets for efforts to promote SCI repair.
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Affiliation(s)
- Jianxian Luo
- Department of Orthopedics, The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Min Xie
- Department of Orthopedics, The First Affiliated Hospital, Jinan University, Guangzhou, China
- Department of Orthopedics, Zhuhai Hospital Affiliated with Jinan University (Zhuhai People’s Hospital), Zhuhai, China
- Orthopedics Department I, Zhuhai Hospital of Integrated Traditional Chinese and Western Medicine, Zhuhai, China
| | - Cheng Peng
- Department of Orthopedics, The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Yanming Ma
- Department of Orthopedics, The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Ke Wang
- Department of Orthopedics, The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Gengxiong Lin
- Department of Orthopedics, The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Hua Yang
- Department of Orthopedics, The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Tianjun Chen
- Department of Orthopedics, The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Qiuling Liu
- Department of Orthopedics, The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Guowei Zhang
- Department of Orthopedics, The First Affiliated Hospital, Jinan University, Guangzhou, China
- *Correspondence: Guowei Zhang,
| | - Hongsheng Lin
- Department of Orthopedics, The First Affiliated Hospital, Jinan University, Guangzhou, China
- Hongsheng Lin,
| | - Zhisheng Ji
- Department of Orthopedics, The First Affiliated Hospital, Jinan University, Guangzhou, China
- Zhisheng Ji,
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12
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Li S, Liang Y, Zou J, Cai Z, Yang H, Yang J, Zhang Y, Lin H, Zhang G, Tan M. SUMOylation of microtubule-cleaving enzyme KATNA1 promotes microtubule severing and neurite outgrowth. J Biol Chem 2022; 298:102292. [PMID: 35868557 PMCID: PMC9403493 DOI: 10.1016/j.jbc.2022.102292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/10/2022] [Accepted: 07/11/2022] [Indexed: 12/01/2022] Open
Abstract
Katanin p60 ATPase-containing subunit A1 (KATNA1) is a microtubule-cleaving enzyme that regulates the development of neural protrusions through cytoskeletal rearrangements. However, the mechanism underlying the linkage of the small ubiquitin-like modifier (SUMO) protein to KATNA1 and how this modification regulates the development of neural protrusions is unclear. Here we discovered, using mass spectrometry analysis, that SUMO-conjugating enzyme UBC9, an enzyme necessary for the SUMOylation process, was present in the KATNA1 interactome. Moreover, GST-pull down and co-immunoprecipitation assays confirmed that KATNA1 and SUMO interact. We further demonstrated using immunofluorescence experiments that KATNA1 and the SUMO2 isoform colocalized in hippocampal neurites. We also performed a bioinformatics analysis of KATNA1 protein sequences to identify three potentially conserved SUMOylation sites (K77, K157, and K330) among vertebrates. Mutation of K330, but not K77 or K157, abolished KATNA1-induced microtubule severing and decreased the level of binding observed for KATNA1 and SUMO2. Cotransfection of SUMO2 and wildtype KATNA1 in COS7 cells increased microtubule severing, whereas no effect was observed after cotransfection with the K330R KATNA1 mutant. Furthermore, in cultured hippocampal neurons, overexpression of wildtype KATNA1 significantly promoted neurite outgrowth, whereas the K330R mutant eliminated this effect. Taken together, our results demonstrate that the K330 site in KATNA1 is modified by SUMOylation and SUMOylation of KATNA1 promotes microtubule dynamics and hippocampal neurite outgrowth.
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Affiliation(s)
- Shaojin Li
- Department of Orthopaedics, the First Affiliated Hospital of Jinan University, Guangzhou 510630, China
| | - Yaozhong Liang
- Department of Orthopaedics, the First Affiliated Hospital of Jinan University, Guangzhou 510630, China
| | - Jianyu Zou
- Department of Orthopaedics, the First Affiliated Hospital of Jinan University, Guangzhou 510630, China
| | - Zhenbin Cai
- Department of Orthopaedics, the First Affiliated Hospital of Jinan University, Guangzhou 510630, China
| | - Hua Yang
- Department of Orthopaedics, the First Affiliated Hospital of Jinan University, Guangzhou 510630, China
| | - Jie Yang
- Department of Orthopaedics, the First Affiliated Hospital of Jinan University, Guangzhou 510630, China
| | - Yunlong Zhang
- Department of Orthopaedics, the First Affiliated Hospital of Jinan University, Guangzhou 510630, China
| | - Hongsheng Lin
- Department of Orthopaedics, the First Affiliated Hospital of Jinan University, Guangzhou 510630, China.
| | - Guowei Zhang
- Department of Orthopaedics, the First Affiliated Hospital of Jinan University, Guangzhou 510630, China.
| | - Minghui Tan
- Department of Orthopaedics, the First Affiliated Hospital of Jinan University, Guangzhou 510630, China.
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13
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Costa AC, Sousa MM. The Role of Spastin in Axon Biology. Front Cell Dev Biol 2022; 10:934522. [PMID: 35865632 PMCID: PMC9294387 DOI: 10.3389/fcell.2022.934522] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 06/07/2022] [Indexed: 12/05/2022] Open
Abstract
Neurons are highly polarized cells with elaborate shapes that allow them to perform their function. In neurons, microtubule organization—length, density, and dynamics—are essential for the establishment of polarity, growth, and transport. A mounting body of evidence shows that modulation of the microtubule cytoskeleton by microtubule-associated proteins fine tunes key aspects of neuronal cell biology. In this respect, microtubule severing enzymes—spastin, katanin and fidgetin—a group of microtubule-associated proteins that bind to and generate internal breaks in the microtubule lattice, are emerging as key modulators of the microtubule cytoskeleton in different model systems. In this review, we provide an integrative view on the latest research demonstrating the key role of spastin in neurons, specifically in the context of axonal cell biology. We focus on the function of spastin in the regulation of microtubule organization, and axonal transport, that underlie its importance in the intricate control of axon growth, branching and regeneration.
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Affiliation(s)
- Ana Catarina Costa
- Nerve Regeneration Group, Instituto de Biologia Molecular e Celular (IBMC), Instituto de Investigação e Inovação Em Saúde (i3S), University of Porto, Porto, Portugal
- Graduate Program in Molecular and Cell Biology, Instituto de Ciências Biomédicas Abel Salazar (ICBAS), University of Porto, Porto, Portugal
- *Correspondence: Ana Catarina Costa, ; Monica Mendes Sousa,
| | - Monica Mendes Sousa
- Nerve Regeneration Group, Instituto de Biologia Molecular e Celular (IBMC), Instituto de Investigação e Inovação Em Saúde (i3S), University of Porto, Porto, Portugal
- *Correspondence: Ana Catarina Costa, ; Monica Mendes Sousa,
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14
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Chen L, Wang H, Cha S, Li J, Zhang J, Wu J, Guo G, Zhang J. Phosphorylation of Spastin Promotes the Surface Delivery and Synaptic Function of AMPA Receptors. Front Cell Neurosci 2022; 16:809934. [PMID: 35418834 PMCID: PMC8995424 DOI: 10.3389/fncel.2022.809934] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 03/07/2022] [Indexed: 12/14/2022] Open
Abstract
Synaptic plasticity is essential for cognitive functions such as learning and memory. One of the mechanisms involved in synaptic plasticity is the dynamic delivery of AMPA receptors (AMPARs) in and out of synapses. Mutations of SPAST, which encodes SPASTIN, a microtubule-severing protein, are considered the most common cause of hereditary spastic paraparesis (HSP). In some cases, patients with HSP also manifest cognitive impairment. In addition, mice with Spastin depletion exhibit working and associative memory deficits and reduced AMPAR levels. However, the exact effect and molecular mechanism of Spastin on AMPARs trafficking has remained unclear. Here, we report that Spastin interacts with AMPAR, and phosphorylation of Spastin enhances its interaction with AMPAR subunit GluA2. Further study shows that phosphorylation of Spastin can increase AMPAR GluA2 surface expression and the amplitude and frequency of miniature excitatory synaptic currents (mEPSC) in cultured hippocampal neurons. Moreover, phosphorylation of Spastin at Ser210 is crucial for GluA2 surface expression. Phosphorylation of Spastin K353A, which obliterates microtubule-severing activity, also promotes AMPAR GluA2 subunit trafficking to the surface and increases the amplitude and frequency of mEPSCs in cultured neurons. Taken together, our data demonstrate that Spastin phosphorylation promotes the surface delivery of the AMPAR GluA2 subunit independent of microtubule dynamics.
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Affiliation(s)
- Li Chen
- Department of Anatomy, Neuroscience Laboratory for Cognitive and Developmental Disorders, Medical College of Jinan University, Guangzhou, China
| | - Hanjie Wang
- Department of Anatomy, Neuroscience Laboratory for Cognitive and Developmental Disorders, Medical College of Jinan University, Guangzhou, China
| | - Shuhan Cha
- Department of Anatomy, Neuroscience Laboratory for Cognitive and Developmental Disorders, Medical College of Jinan University, Guangzhou, China
| | - Jiong Li
- Department of Anatomy, Neuroscience Laboratory for Cognitive and Developmental Disorders, Medical College of Jinan University, Guangzhou, China
| | - Jiaqi Zhang
- Department of Anatomy, Neuroscience Laboratory for Cognitive and Developmental Disorders, Medical College of Jinan University, Guangzhou, China
| | - Jiaming Wu
- Department of Anatomy, Neuroscience Laboratory for Cognitive and Developmental Disorders, Medical College of Jinan University, Guangzhou, China
- Department of Neurosurgery, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Guoqing Guo
- Department of Anatomy, Neuroscience Laboratory for Cognitive and Developmental Disorders, Medical College of Jinan University, Guangzhou, China
- *Correspondence: Guoqing Guo Jifeng Zhang
| | - Jifeng Zhang
- Department of Anatomy, Neuroscience Laboratory for Cognitive and Developmental Disorders, Medical College of Jinan University, Guangzhou, China
- *Correspondence: Guoqing Guo Jifeng Zhang
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15
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Chen R, Du S, Yao Y, Zhang L, Luo J, Shen Y, Xu Z, Zeng X, Zhang L, Liu M, Yin C, Tang B, Tan J, Xu X, Liu JY. A Novel SPAST Mutation Results in Spastin Accumulation and Defects in Microtubule Dynamics. Mov Disord 2021; 37:598-607. [PMID: 34927746 PMCID: PMC9300132 DOI: 10.1002/mds.28885] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 11/24/2021] [Accepted: 11/27/2021] [Indexed: 11/25/2022] Open
Abstract
Background Haploinsufficiency is widely accepted as the pathogenic mechanism of spastic paraplegia type 4 (SPG4). However, there are some cases that cannot be explained by reduced function of the spastin protein encoded by SPAST. Objectives To identify the causative gene of autosomal dominant hereditary spastic paraplegia in three large Chinese families and explore the pathological mechanism of a spastin variant. Methods Three large Chinese hereditary spastic paraplegia families with a total of 247 individuals (67 patients) were investigated, of whom 59 members were recruited to the study. Genetic testing was performed to identify the causative gene. Western blotting and immunofluorescence were used to analyze the effects of the mutant proteins in vitro. Results In the three hereditary spastic paraplegia families, of whom three index cases were misdiagnosed as other types of neurological diseases, a novel c.985dupA (p.Met329Asnfs*3) variant in SPAST was identified and was shown to cosegregate with the phenotype in the three families. The c.985dupA mutation produced two truncated mutants (mutant M1 and M87 isoforms) that accumulated to a higher level than their wild‐type counterparts. Furthermore, the mutant M1 isoform heavily decorated the microtubules and rendered them resistant to depolymerization. In contrast, the mutant M87 isoform was diffusely localized in both the nucleus and the cytoplasm, could not decorate microtubules, and was not able to promote microtubule disassembly. Conclusions SPAST mutations leading to premature stop codons do not always act through haploinsufficiency. The truncated spastin may damage the corticospinal tracts through an isoform‐specific toxic effect.
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Affiliation(s)
- Rui Chen
- College of Life Science and Technology, Huazhong University of Science and Technology (HUST), Wuhan, China
| | - Shiyue Du
- College of Life Science and Technology, Huazhong University of Science and Technology (HUST), Wuhan, China
| | - Yanyi Yao
- Medical Genetics Center, Maternal and Child Health Hospital of Hubei Province, Wuhan, China
| | - Lu Zhang
- College of Life Science and Technology, Huazhong University of Science and Technology (HUST), Wuhan, China
| | - Junyu Luo
- College of Life Science and Technology, Huazhong University of Science and Technology (HUST), Wuhan, China
| | - Yinhua Shen
- College of Life Science and Technology, Huazhong University of Science and Technology (HUST), Wuhan, China
| | - Zhenping Xu
- College of Life Science and Technology, Xinxiang Medical University, Xinxiang, China
| | - Xiaomei Zeng
- College of Life Science and Technology, Huazhong University of Science and Technology (HUST), Wuhan, China
| | - Luoying Zhang
- College of Life Science and Technology, Huazhong University of Science and Technology (HUST), Wuhan, China
| | - Mugen Liu
- College of Life Science and Technology, Huazhong University of Science and Technology (HUST), Wuhan, China
| | - Chuang Yin
- Department of Neurology, Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Beisha Tang
- Department of Neurology, Xiangya Hospital, Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
| | - Jun Tan
- Department of Neurology, Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Xuan Xu
- Institute of Neuroscience, State Key Laboratory of Neuroscience, Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China
| | - Jing Yu Liu
- Institute of Neuroscience, State Key Laboratory of Neuroscience, Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China
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16
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Zou J, Cai Z, Liang Z, Liang Y, Zhang G, Yang J, Zhang Y, Lin H, Tan M. Different fusion tags affect the activity of ubiquitin overexpression on spastin protein stability. Eur J Histochem 2021; 65. [PMID: 34873900 PMCID: PMC8678624 DOI: 10.4081/ejh.2021.3352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 11/23/2021] [Indexed: 11/23/2022] Open
Abstract
Spastin is one of the proteins which lead to hereditary spastic paraplegia (HSP), whose dysfunction towards microtubule severing and membrane transporting is critically important. The present study is to elucidate the mechanisms of the protein stability regulation of spastin. The ubiquitin encoding plasmids were transfected into COS-7 cells with different fusion tags including Green Fluorescent Protein (GFP), mCherry and Flag. The expression level of spastin was detected, microtubule severing activity and neurite outgrowth were quantified. The data showed that ubiquitin overexpression significantly induced the decreased expression of spastin, suppressed the activity of microtubule severing in COS-7 cells and inhibited the promoting effect on neurite outgrowth in cultured hippocampal neurons. Furthermore, when modulating the overexpression experiments of ubiquitin, it was found that relatively small tag like Flag, but not large tags such as GFP or mCherry fused with ubiquitin, retained the activity on spastin stability. The present study investigated the effects of small/large tags addition to ubiquitin and the novel mechanisms of post-transcriptional modifications of spastin on regulating neurite outgrowth, in the attempt to experimentally elucidate the mechanisms that control the level or stability of spastin in hereditary spastic paraplegia.
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Affiliation(s)
- Jianyu Zou
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou.
| | - Zhenbin Cai
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou.
| | - Zhi Liang
- Department of Orthopaedics, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen.
| | - Yaozhong Liang
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou.
| | - Guowei Zhang
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou.
| | - Jie Yang
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou.
| | - Yunlong Zhang
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou.
| | - Hongsheng Lin
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou.
| | - Minghui Tan
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou.
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17
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Cheng L, Chen K, Li J, Wu J, Zhang J, Chen L, Guo G, Zhang J. Phosphorylation of CRMP2 by Cdk5 Negatively Regulates the Surface Delivery and Synaptic Function of AMPA Receptors. Mol Neurobiol 2021; 59:762-777. [PMID: 34773219 DOI: 10.1007/s12035-021-02581-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 09/24/2021] [Indexed: 11/28/2022]
Abstract
AMPA receptor mediate most fast excitatory synaptic transmission and play a key role in synaptic plasticity in the central nervous system (CNS) by trafficking and targeting of its subunits to individual postsynaptic membrane. Collapsing response mediator protein 2 (CRMP2), an intracellular phospho-protein, has been reported to promote the maturation of the dendritic spine and transfer AMPA receptors to the membrane. However, our knowledge about the molecular mechanisms of CRMP2 regulating AMPA receptors trafficking is limited. Here, we reported that CRMP2 promoted the surface expression of AMPA receptor GluA1 subunit in cultured hippocampal neurons and in HEK293T cells expressing GluA1 subunits. Furthermore, we found that CRMP2 interacted with GluA1, and their interaction was inhibited by CRMP2 phosphorylation at ser522. Moreover, our results showed that phosphorylation of CRMP2 at ser522 by cyclin-dependent kinase 5 (Cdk5) decreased the fluorescence intensity of surface GluA1 and the amplitude and frequency of miniature excitatory synaptic currents (mEPSCs) in cultured hippocampal neurons, indicating a reduction levels and synaptic function of AMPA receptors. Taken together, our data demonstrated that phosphorylation of CRMP2 by Cdk5 is important for AMPA receptor surface delivery in hippocampal neurons.
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Affiliation(s)
- Longfei Cheng
- Department of Anatomy, Neuroscience Laboratory for Cognitive and Developmental Disorders, Medical College of Jinan University, Guangzhou, 510630, China.,Department of Neurosurgery, The First Affiliated Hospital of Jinan University Guangzhou, Guangzhou, 510630, China
| | - Keen Chen
- Department of Anatomy, Neuroscience Laboratory for Cognitive and Developmental Disorders, Medical College of Jinan University, Guangzhou, 510630, China.,Department of Neurosurgery, The First Affiliated Hospital of Jinan University Guangzhou, Guangzhou, 510630, China
| | - Jiong Li
- Department of Anatomy, Neuroscience Laboratory for Cognitive and Developmental Disorders, Medical College of Jinan University, Guangzhou, 510630, China
| | - Jiaming Wu
- Department of Anatomy, Neuroscience Laboratory for Cognitive and Developmental Disorders, Medical College of Jinan University, Guangzhou, 510630, China.,Department of Neurosurgery, The First Affiliated Hospital of Jinan University Guangzhou, Guangzhou, 510630, China
| | - Jiaqi Zhang
- Department of Anatomy, Neuroscience Laboratory for Cognitive and Developmental Disorders, Medical College of Jinan University, Guangzhou, 510630, China
| | - Li Chen
- Department of Anatomy, Neuroscience Laboratory for Cognitive and Developmental Disorders, Medical College of Jinan University, Guangzhou, 510630, China
| | - Guoqing Guo
- Department of Anatomy, Neuroscience Laboratory for Cognitive and Developmental Disorders, Medical College of Jinan University, Guangzhou, 510630, China.
| | - Jifeng Zhang
- Department of Anatomy, Neuroscience Laboratory for Cognitive and Developmental Disorders, Medical College of Jinan University, Guangzhou, 510630, China.
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18
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Liu Q, Zhang G, Ji Z, Lin H. Molecular and cellular mechanisms of spastin in neural development and disease (Review). Int J Mol Med 2021; 48:218. [PMID: 34664680 PMCID: PMC8547542 DOI: 10.3892/ijmm.2021.5051] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 09/29/2021] [Indexed: 12/26/2022] Open
Abstract
Spastin is a microtubule (MT)‑severing enzyme identified from mutations of hereditary spastic paraplegia in 1999 and extensive studies indicate its vital role in various cellular activities. In the past two decades, efforts have been made to understand the underlying molecular mechanisms of how spastin is linked to neural development and disease. Recent studies on spastin have unraveled the mechanistic processes of its MT‑severing activity and revealed that spastin acts as an MT amplifier to mediate its remodeling, thus providing valuable insight into the molecular roles of spastin under physiological conditions. In addition, recent research has revealed multiple novel molecular mechanisms of spastin in cellular biological pathways, including endoplasmic reticulum shaping, calcium trafficking, fatty acid trafficking, as well as endosomal fission and trafficking. These processes are closely involved in axonal and dendritic development and maintenance. The current review presents recent biological advances regarding the molecular mechanisms of spastin at the cellular level and provides insight into how it affects neural development and disease.
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Affiliation(s)
- Qiuling Liu
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510630, P.R. China
| | - Guowei Zhang
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510630, P.R. China
| | - Zhisheng Ji
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510630, P.R. China
| | - Hongsheng Lin
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510630, P.R. China
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19
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Spastin interacts with CRMP5 to promote spindle organization in mouse oocytes by severing microtubules. ZYGOTE 2021; 30:80-91. [PMID: 34034836 DOI: 10.1017/s0967199421000344] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Microtubule-severing protein (MTSP) is critical for the survival of both mitotic and postmitotic cells. However, the study of MTSP during meiosis of mammalian oocytes has not been reported. We found that spastin, a member of the MTSP family, was highly expressed in oocytes and aggregated in spindle microtubules. After knocking down spastin by specific siRNA, the spindle microtubule density of meiotic oocytes decreased significantly. When the oocytes were cultured in vitro, the oocytes lacking spastin showed an obvious maturation disorder. Considering the microtubule-severing activity of spastin, we speculate that spastin on spindles may increase the number of microtubule broken ends by severing the microtubules, therefore playing a nucleating role, promoting spindle assembly and ensuring normal meiosis. In addition, we found the colocalization and interaction of collapsin response mediator protein 5 (CRMP5) and spastin in oocytes. CRMP5 can provide structural support and promote microtubule aggregation, creating transportation routes, and can interact with spastin in the microtubule activity of nerve cells (30). Knocking down CRMP5 may lead to spindle abnormalities and developmental disorders in oocytes. Overexpression of spastin may reverse the abnormal phenotype caused by the deletion of CRMP5. In summary, our data support a model in which the interaction between spastin and CRMP5 promotes the assembly of spindle microtubules in oocytes by controlling microtubule dynamics, therefore ensuring normal meiosis.
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20
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Gileadi TE, Swamy AK, Hore Z, Horswell S, Ellegood J, Mohan C, Mizuno K, Lundebye AK, Giese KP, Stockinger B, Hogstrand C, Lerch JP, Fernandes C, Basson MA. Effects of Low-Dose Gestational TCDD Exposure on Behavior and on Hippocampal Neuron Morphology and Gene Expression in Mice. ENVIRONMENTAL HEALTH PERSPECTIVES 2021; 129:57002. [PMID: 33956508 PMCID: PMC8101924 DOI: 10.1289/ehp7352] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 02/19/2021] [Accepted: 03/29/2021] [Indexed: 05/03/2023]
Abstract
BACKGROUND 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) is a persistent and toxic environmental pollutant. Gestational exposure to TCDD has been linked to cognitive and motor deficits, and increased incidence of autism spectrum disorder (ASD) traits in children. Most animal studies of these neurodevelopmental effects involve acute TCDD exposure, which does not model typical exposure in humans. OBJECTIVES The aim of the study was to establish a dietary low-dose gestational TCDD exposure protocol and performed an initial characterization of the effects on offspring behavior, neurodevelopmental phenotypes, and gene expression. METHODS Throughout gestation, pregnant C57BL/6J mice were fed a diet containing a low dose of TCDD (9 ng TCDD/kg body weight per day) or a control diet. The offspring were tested in a battery of behavioral tests, and structural brain alterations were investigated by magnetic resonance imaging. The dendritic morphology of pyramidal neurons in the hippocampal Cornu Ammonis (CA)1 area was analyzed. RNA sequencing was performed on hippocampi of postnatal day 14 TCDD-exposed and control offspring. RESULTS TCDD-exposed females displayed subtle deficits in motor coordination and reversal learning. Volumetric difference between diet groups were observed in regions of the hippocampal formation, mammillary bodies, and cerebellum, alongside higher dendritic arborization of pyramidal neurons in the hippocampal CA1 region of TCDD-exposed females. RNA-seq analysis identified 405 differentially expressed genes in the hippocampus, enriched for genes with functions in regulation of microtubules, axon guidance, extracellular matrix, and genes regulated by SMAD3. DISCUSSION Exposure to 9 ng TCDD/kg body weight per day throughout gestation was sufficient to cause specific behavioral and structural brain phenotypes in offspring. Our data suggest that alterations in SMAD3-regulated microtubule polymerization in the developing postnatal hippocampus may lead to an abnormal morphology of neuronal dendrites that persists into adulthood. These findings show that environmental low-dose gestational exposure to TCDD can have significant, long-term impacts on brain development and function. https://doi.org/10.1289/EHP7352.
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Affiliation(s)
- Talia E. Gileadi
- Centre for Craniofacial and Regenerative Biology, King’s College London, London, UK
| | - Abhyuday K. Swamy
- Centre for Craniofacial and Regenerative Biology, King’s College London, London, UK
| | - Zoe Hore
- Social, Genetic & Developmental Psychiatry Centre, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, UK
| | - Stuart Horswell
- Department of Bioinformatics and Biostatistics, The Francis Crick Institute, London, UK
| | - Jacob Ellegood
- Mouse Imaging Centre (MICe), Hospital for Sick Children, Toronto, Ontario, Canada
| | - Conor Mohan
- Centre for Craniofacial and Regenerative Biology, King’s College London, London, UK
| | - Keiko Mizuno
- Department of Basic and Clinical Neuroscience, King’s College London, London, UK
| | | | - K. Peter Giese
- Department of Basic and Clinical Neuroscience, King’s College London, London, UK
| | | | | | - Jason P. Lerch
- Mouse Imaging Centre (MICe), Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
- Wellcome Centre for Integrative Neuroimaging, University of Oxford, Oxford, UK
| | - Cathy Fernandes
- Social, Genetic & Developmental Psychiatry Centre, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, UK
- MRC Centre for Neurodevelopmental Disorders, King’s College London, London, UK
| | - M. Albert Basson
- Centre for Craniofacial and Regenerative Biology, King’s College London, London, UK
- MRC Centre for Neurodevelopmental Disorders, King’s College London, London, UK
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21
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Lin YF, Chen KC, Yang YK, Hsiao YH. Collapsin response mediator protein 5 (CRMP5) modulates susceptibility to chronic social defeat stress in mice. Mol Neurobiol 2021; 58:3175-3186. [PMID: 33638112 DOI: 10.1007/s12035-021-02336-7] [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: 07/23/2020] [Accepted: 02/17/2021] [Indexed: 11/25/2022]
Abstract
Collapsin response mediator protein 5 (CRMP5), a member of the CRMP family, is expressed in the brain, particularly in the hippocampus, an area of the brain that can modulate stress responses. Social stress has a well-known detrimental effect on health and can lead to depression, but not all individuals are equally sensitive to stress. To date, researchers have not conclusively determined how social stress increases the susceptibility of the brain to depression. Here, we used the chronic social defeat stress (CSDS) model and observed higher hippocampal CRMP5 expression in stress-susceptible (SS) mice than in control and stress-resilient (RES) mice. A negative correlation was observed between the expression levels of CRMP5 and the social interaction (SI) ratio. Reduced hippocampal CRMP5 expression increased the SI ratio in SS mice, whereas CRMP5 overexpression was sufficient to induce social avoidance behaviors in control mice following exposure to subthreshold social stress induced by lentivirus-based overexpression and inducible tetracycline-on strategies to upregulate CRMP5. Interestingly, increased CRMP5 expression in SS and lenti-CRMP5-treated mice also caused serum corticosterone concentrations to increase. These findings improve our understanding of the potential mechanism by which CRMP5 triggers susceptibility to social stress, and they support the further development of therapeutic agents for the treatment of stress disorders in humans.
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Affiliation(s)
- Yu-Fen Lin
- Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Kao Chin Chen
- Department of Psychiatry, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yen Kuang Yang
- Department of Psychiatry, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ya-Hsin Hsiao
- Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan, 70101, Taiwan.
- Institute of Behavioral Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
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22
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Ji ZS, Li JP, Fu CH, Luo JX, Yang H, Zhang GW, Wu W, Lin HS. Spastin interacts with collapsin response mediator protein 3 to regulate neurite growth and branching. Neural Regen Res 2021; 16:2549-2556. [PMID: 33907047 PMCID: PMC8374569 DOI: 10.4103/1673-5374.313052] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Cytoskeletal microtubule rearrangement and movement are crucial in the repair of spinal cord injury. Spastin plays an important role in the regulation of microtubule severing. Both spastin and collapsin response mediator proteins can regulate neurite growth and branching; however, whether spastin interacts with collapsin response mediator protein 3 (CRMP3) during this process remains unclear, as is the mechanism by which CRMP3 participates in the repair of spinal cord injury. In this study, we used a proteomics approach to identify key proteins associated with spinal cord injury repair. We then employed liquid chromatography-mass spectrometry to identify proteins that were able to interact with glutathione S-transferase-spastin. Then, co-immunoprecipitation and staining approaches were used to evaluate potential interactions between spastin and CRMP3. Finally, we co-transfected primary hippocampal neurons with CRMP3 and spastin to evaluate their role in neurite outgrowth. Mass spectrometry identified the role of CRMP3 in the spinal cord injury repair process. Liquid chromatography-mass spectrometry pulldown assays identified three CRMP3 peptides that were able to interact with spastin. CRMP3 and spastin were co-expressed in the spinal cord and were able to interact with one another in vitro and in vivo. Lastly, CRMP3 overexpression was able to enhance the ability of spastin to promote neurite growth and branching. Therefore, our results confirm that spastin and CRMP3 play roles in spinal cord injury repair by regulating neurite growth and branching. These proteins may therefore be novel targets for spinal cord injury repair. The Institutional Animal Care and Use Committee of Jinan University, China approved this study (approval No. IACUS-20181008-03) on October 8, 2018.
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Affiliation(s)
- Zhi-Sheng Ji
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Jian-Ping Li
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou, Guangdong Province, China
| | - Chao-Hua Fu
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangzhou; Department of Orthopedics, Jiangmen Hospital of Sun Yat-sen University, Jiangmen, Guangdong Province, China
| | - Jian-Xian Luo
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Hua Yang
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Guo-Wei Zhang
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Wutian Wu
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou, Guangdong Province; Re-Stem Biotechnology Co., Ltd., Suzhou, Jiangsu Province; Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Hong-Sheng Lin
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
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23
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Jiang T, Cai Z, Ji Z, Zou J, Liang Z, Zhang G, Liang Y, Lin H, Tan M. The lncRNA MALAT1/miR-30/Spastin Axis Regulates Hippocampal Neurite Outgrowth. Front Cell Neurosci 2020; 14:555747. [PMID: 33192306 PMCID: PMC7606917 DOI: 10.3389/fncel.2020.555747] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 09/23/2020] [Indexed: 11/13/2022] Open
Abstract
Spastin, a microtubule-severing enzyme, is important for neurite outgrowth. However, the mechanisms underlying the post-transcriptional regulation of spastin during microtubule-related processes are largely unknown. We demonstrated that the spastin expression level is controlled by a long non-coding RNA (lncRNA) metastasis-associated lung adenocarcinoma transcript 1 (MALAT1)/microRNA-30 (miR-30) axis during neurite outgrowth. The miR-30 expression level decreased in hippocampal neurons with increasing days in culture, and miR-30 overexpression suppressed while miR-30 inhibition promoted neurite outgrowth in hippocampal neurons. Spastin was validated as a target gene of miR-30 using the luciferase reporter assay. The protein expression, microtubule severing activity, and neurite promoting effect of spastin were suppressed by the overexpression of miR-30 mimics and increased by miR-30 inhibitors. MALAT1 expression increased during neurite outgrowth and MALAT1 silencing impaired neurite outgrowth. miR-30 was a sponge target of MALAT1 and MALAT1/miR-30 altered neurite outgrowth in hippocampal neurons. MALAT1 overexpression reversed the inhibitory effect of miR-30 on the activity of a luciferase reporter construct containing spastin, as well as spastin mRNA and protein expression, indicating that spastin was a downstream effector of MALAT1/miR-30. The MALAT1/miR-30 cascade also modulated spastin-induced microtubule severing, and the MALAT1/miR-30/spastin axis regulated neurite outgrowth in hippocampal neurons. This study suggests a new mechanism governing neurite outgrowth in hippocampal neurons involving MALAT1/miR-30-regulated spastin expression.
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Affiliation(s)
- Tao Jiang
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou, China.,Department of Orthopaedics, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Zhenbin Cai
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Zhisheng Ji
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Jianyu Zou
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Zhi Liang
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Guowei Zhang
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Yaozhong Liang
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Hongsheng Lin
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Minghui Tan
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou, China
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24
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Ji ZS, Liu QL, Zhang JF, Yang YH, Li J, Zhang GW, Tan MH, Lin HS, Guo GQ. SUMOylation of spastin promotes the internalization of GluA1 and regulates dendritic spine morphology by targeting microtubule dynamics. Neurobiol Dis 2020; 146:105133. [PMID: 33049318 DOI: 10.1016/j.nbd.2020.105133] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 09/24/2020] [Accepted: 10/06/2020] [Indexed: 10/23/2022] Open
Abstract
Dendritic spines are specialized structures involved in neuronal processes on which excitatory synaptic contact occurs. The microtubule cytoskeleton is vital for maintaining spine morphology and mature synapses. Spastin is related to microtubule-severing proteases and is involved in synaptic bouton formation. However, it is not yet known if spastin can be modified by Small Ubiquitin-like Modifier (SUMO) or how this modification regulates dendritic spines. Spastin was shown to be SUMOylated at K427, and its deSUMOylation promoted microtubule stability. In addition, SUMOylation of spastin was shown to affect signalling pathways associated with long term synaptic depression. SUMOylated spastin promoted the development of dendrites and dendritic spines. Moreover, SUMOylated spastin regulated endocytosis and affected the transport of the AMPA receptor, GluA1. Our findings suggest that SUMOylation of spastin promotes GluA1 internalization and regulates dendritic spine morphology through targeting of microtubule dynamics.
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Affiliation(s)
- Zhi-Sheng Ji
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, No.601 West Huangpu Avenue, Tianhe, Guangzhou 510630, China
| | - Qiu-Ling Liu
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, No.601 West Huangpu Avenue, Tianhe, Guangzhou 510630, China
| | - Ji-Feng Zhang
- Department of Anatomy, Neuroscience Laboratory for Cognitive and Developmental Disorders, Medical College of Jinan University, No.601 West Huangpu Avenue, Tianhe, Guangzhou 510630, China
| | - Yu-Hao Yang
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, No.601 West Huangpu Avenue, Tianhe, Guangzhou 510630, China
| | - Jiong Li
- Department of Anatomy, Neuroscience Laboratory for Cognitive and Developmental Disorders, Medical College of Jinan University, No.601 West Huangpu Avenue, Tianhe, Guangzhou 510630, China
| | - Guo-Wei Zhang
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, No.601 West Huangpu Avenue, Tianhe, Guangzhou 510630, China
| | - Ming-Hui Tan
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, No.601 West Huangpu Avenue, Tianhe, Guangzhou 510630, China.
| | - Hong-Sheng Lin
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, No.601 West Huangpu Avenue, Tianhe, Guangzhou 510630, China.
| | - Guo-Qing Guo
- Department of Anatomy, Neuroscience Laboratory for Cognitive and Developmental Disorders, Medical College of Jinan University, No.601 West Huangpu Avenue, Tianhe, Guangzhou 510630, China.
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25
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Jin SC, Lewis SA, Bakhtiari S, Zeng X, Sierant MC, Shetty S, Nordlie SM, Elie A, Corbett MA, Norton BY, van Eyk CL, Haider S, Guida BS, Magee H, Liu J, Pastore S, Vincent JB, Brunstrom-Hernandez J, Papavasileiou A, Fahey MC, Berry JG, Harper K, Zhou C, Zhang J, Li B, Zhao H, Heim J, Webber DL, Frank MSB, Xia L, Xu Y, Zhu D, Zhang B, Sheth AH, Knight JR, Castaldi C, Tikhonova IR, López-Giráldez F, Keren B, Whalen S, Buratti J, Doummar D, Cho M, Retterer K, Millan F, Wang Y, Waugh JL, Rodan L, Cohen JS, Fatemi A, Lin AE, Phillips JP, Feyma T, MacLennan SC, Vaughan S, Crompton KE, Reid SM, Reddihough DS, Shang Q, Gao C, Novak I, Badawi N, Wilson YA, McIntyre SJ, Mane SM, Wang X, Amor DJ, Zarnescu DC, Lu Q, Xing Q, Zhu C, Bilguvar K, Padilla-Lopez S, Lifton RP, Gecz J, MacLennan AH, Kruer MC. Mutations disrupting neuritogenesis genes confer risk for cerebral palsy. Nat Genet 2020; 52:1046-1056. [PMID: 32989326 PMCID: PMC9148538 DOI: 10.1038/s41588-020-0695-1] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 08/20/2020] [Indexed: 01/28/2023]
Abstract
In addition to commonly associated environmental factors, genomic factors may cause cerebral palsy. We performed whole-exome sequencing of 250 parent-offspring trios, and observed enrichment of damaging de novo mutations in cerebral palsy cases. Eight genes had multiple damaging de novo mutations; of these, two (TUBA1A and CTNNB1) met genome-wide significance. We identified two novel monogenic etiologies, FBXO31 and RHOB, and showed that the RHOB mutation enhances active-state Rho effector binding while the FBXO31 mutation diminishes cyclin D levels. Candidate cerebral palsy risk genes overlapped with neurodevelopmental disorder genes. Network analyses identified enrichment of Rho GTPase, extracellular matrix, focal adhesion and cytoskeleton pathways. Cerebral palsy risk genes in enriched pathways were shown to regulate neuromotor function in a Drosophila reverse genetics screen. We estimate that 14% of cases could be attributed to an excess of damaging de novo or recessive variants. These findings provide evidence for genetically mediated dysregulation of early neuronal connectivity in cerebral palsy.
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Affiliation(s)
- Sheng Chih Jin
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
- Laboratory of Human Genetics and Genomics, Rockefeller University, New York, NY, USA
- Department of Genetics, Washington University School of Medicine, St Louis, MO, USA
| | - Sara A Lewis
- Pediatric Movement Disorders Program, Division of Pediatric Neurology, Barrow Neurological Institute, Phoenix Children's Hospital, Phoenix, AZ, USA
- Departments of Child Health, Neurology, and Cellular & Molecular Medicine, and Program in Genetics, University of Arizona College of Medicine-Phoenix, Phoenix, AZ, USA
| | - Somayeh Bakhtiari
- Pediatric Movement Disorders Program, Division of Pediatric Neurology, Barrow Neurological Institute, Phoenix Children's Hospital, Phoenix, AZ, USA
- Departments of Child Health, Neurology, and Cellular & Molecular Medicine, and Program in Genetics, University of Arizona College of Medicine-Phoenix, Phoenix, AZ, USA
| | - Xue Zeng
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
- Laboratory of Human Genetics and Genomics, Rockefeller University, New York, NY, USA
| | - Michael C Sierant
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
- Laboratory of Human Genetics and Genomics, Rockefeller University, New York, NY, USA
| | - Sheetal Shetty
- Pediatric Movement Disorders Program, Division of Pediatric Neurology, Barrow Neurological Institute, Phoenix Children's Hospital, Phoenix, AZ, USA
- Departments of Child Health, Neurology, and Cellular & Molecular Medicine, and Program in Genetics, University of Arizona College of Medicine-Phoenix, Phoenix, AZ, USA
| | - Sandra M Nordlie
- Pediatric Movement Disorders Program, Division of Pediatric Neurology, Barrow Neurological Institute, Phoenix Children's Hospital, Phoenix, AZ, USA
- Departments of Child Health, Neurology, and Cellular & Molecular Medicine, and Program in Genetics, University of Arizona College of Medicine-Phoenix, Phoenix, AZ, USA
| | - Aureliane Elie
- Pediatric Movement Disorders Program, Division of Pediatric Neurology, Barrow Neurological Institute, Phoenix Children's Hospital, Phoenix, AZ, USA
- Departments of Child Health, Neurology, and Cellular & Molecular Medicine, and Program in Genetics, University of Arizona College of Medicine-Phoenix, Phoenix, AZ, USA
| | - Mark A Corbett
- Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
| | - Bethany Y Norton
- Pediatric Movement Disorders Program, Division of Pediatric Neurology, Barrow Neurological Institute, Phoenix Children's Hospital, Phoenix, AZ, USA
- Departments of Child Health, Neurology, and Cellular & Molecular Medicine, and Program in Genetics, University of Arizona College of Medicine-Phoenix, Phoenix, AZ, USA
| | - Clare L van Eyk
- Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
| | - Shozeb Haider
- Department of Pharmaceutical and Biological Chemistry, UCL School of Pharmacy, London, UK
| | - Brandon S Guida
- Pediatric Movement Disorders Program, Division of Pediatric Neurology, Barrow Neurological Institute, Phoenix Children's Hospital, Phoenix, AZ, USA
- Departments of Child Health, Neurology, and Cellular & Molecular Medicine, and Program in Genetics, University of Arizona College of Medicine-Phoenix, Phoenix, AZ, USA
| | - Helen Magee
- Pediatric Movement Disorders Program, Division of Pediatric Neurology, Barrow Neurological Institute, Phoenix Children's Hospital, Phoenix, AZ, USA
- Departments of Child Health, Neurology, and Cellular & Molecular Medicine, and Program in Genetics, University of Arizona College of Medicine-Phoenix, Phoenix, AZ, USA
| | - James Liu
- Pediatric Movement Disorders Program, Division of Pediatric Neurology, Barrow Neurological Institute, Phoenix Children's Hospital, Phoenix, AZ, USA
- Departments of Child Health, Neurology, and Cellular & Molecular Medicine, and Program in Genetics, University of Arizona College of Medicine-Phoenix, Phoenix, AZ, USA
| | - Stephen Pastore
- Molecular Brain Sciences, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
| | - John B Vincent
- Molecular Brain Sciences, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
| | | | | | - Michael C Fahey
- Department of Pediatrics, Monash University, Melbourne, Victoria, Australia
| | - Jesia G Berry
- Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
| | - Kelly Harper
- Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
| | - Chongchen Zhou
- Henan Key Laboratory of Child Genetics and Metabolism, Rehabilitation Department, Children's Hospital of Zhengzhou University, Zhengzhou, China
| | - Junhui Zhang
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
| | - Boyang Li
- Department of Biostatistics, Yale School of Public Health, New Haven, CT, USA
| | - Hongyu Zhao
- Department of Biostatistics, Yale School of Public Health, New Haven, CT, USA
| | - Jennifer Heim
- Pediatric Movement Disorders Program, Division of Pediatric Neurology, Barrow Neurological Institute, Phoenix Children's Hospital, Phoenix, AZ, USA
| | - Dani L Webber
- Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
| | - Mahalia S B Frank
- Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
| | - Lei Xia
- Henan Key Laboratory of Child Brain Injury, Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yiran Xu
- Henan Key Laboratory of Child Brain Injury, Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Dengna Zhu
- Henan Key Laboratory of Child Brain Injury, Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Bohao Zhang
- Henan Key Laboratory of Child Brain Injury, Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Amar H Sheth
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
| | - James R Knight
- Yale Center for Genome Analysis, Yale University, New Haven, CT, USA
| | | | - Irina R Tikhonova
- Yale Center for Genome Analysis, Yale University, New Haven, CT, USA
| | | | - Boris Keren
- Department of Genetics, Pitié-Salpêtrière Hospital, APHP.Sorbonne Université, Paris, France
| | - Sandra Whalen
- UF de Génétique Clinique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs, APHP.Sorbonne Université, Hôpital Armand Trousseau, Paris, France
| | - Julien Buratti
- Department of Genetics, Pitié-Salpêtrière Hospital, APHP.Sorbonne Université, Paris, France
| | - Diane Doummar
- Sorbonne Université, APHP, Service de Neurologie Pédiatrique et Centre de Référence Neurogénétique, Hôpital Armand Trousseau, Paris, France
| | | | | | | | - Yangong Wang
- Institute of Biomedical Science and Children's Hospital, and Key Laboratory of Reproduction Regulation of the National Population and Family Planning Commission (NPFPC), Shanghai Institute of Planned Parenthood Research (SIPPR), IRD, Fudan University, Shanghai, China
| | - Jeff L Waugh
- Departments of Pediatrics & Neurology, University of Texas Southwestern and Children's Medical Center of Dallas, Dallas, TX, USA
| | - Lance Rodan
- Departments of Genetics & Genomics and Neurology, Boston Children's Hospital, Boston, MA, USA
| | - Julie S Cohen
- Division of Neurogenetics and Hugo W. Moser Research Institute, Kennedy Krieger Institute, Baltimore, MD, USA
| | - Ali Fatemi
- Division of Neurogenetics and Hugo W. Moser Research Institute, Kennedy Krieger Institute, Baltimore, MD, USA
| | - Angela E Lin
- Medical Genetics, Department of Pediatrics, MassGeneral Hospital for Children, Boston, MA, USA
| | - John P Phillips
- Departments of Pediatrics and Neurology, University of New Mexico, Albuquerque, NM, USA
| | - Timothy Feyma
- Division of Pediatric Neurology, Gillette Children's Hospital, St Paul, MN, USA
| | - Suzanna C MacLennan
- Department of Paediatric Neurology, Women's & Children's Hospital, Adelaide, South Australia, Australia
| | - Spencer Vaughan
- Departments of Molecular & Cellular Biology and Neuroscience, University of Arizona, Tucson, AZ, USA
| | - Kylie E Crompton
- Murdoch Children's Research Institute and University of Melbourne Department of Paediatrics, Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Susan M Reid
- Murdoch Children's Research Institute and University of Melbourne Department of Paediatrics, Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Dinah S Reddihough
- Murdoch Children's Research Institute and University of Melbourne Department of Paediatrics, Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Qing Shang
- Henan Key Laboratory of Child Genetics and Metabolism, Rehabilitation Department, Children's Hospital of Zhengzhou University, Zhengzhou, China
| | - Chao Gao
- Rehabilitation Department, Children's Hospital of Zhengzhou University/Henan Children's Hospital, Zhengzhou, China
| | - Iona Novak
- Cerebral Palsy Alliance Research Institute, University of Sydney, Sydney, New South Wales, Australia
| | - Nadia Badawi
- Cerebral Palsy Alliance Research Institute, University of Sydney, Sydney, New South Wales, Australia
| | - Yana A Wilson
- Cerebral Palsy Alliance Research Institute, University of Sydney, Sydney, New South Wales, Australia
| | - Sarah J McIntyre
- Cerebral Palsy Alliance Research Institute, University of Sydney, Sydney, New South Wales, Australia
| | - Shrikant M Mane
- Yale Center for Genome Analysis, Yale University, New Haven, CT, USA
| | - Xiaoyang Wang
- Henan Key Laboratory of Child Brain Injury, Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Institute of Neuroscience and Physiology, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden
| | - David J Amor
- Murdoch Children's Research Institute and University of Melbourne Department of Paediatrics, Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Daniela C Zarnescu
- Departments of Molecular & Cellular Biology and Neuroscience, University of Arizona, Tucson, AZ, USA
| | - Qiongshi Lu
- Department of Biostatistics & Medical Informatics, University of Wisconsin-Madison, Madison, WI, USA
| | - Qinghe Xing
- Institute of Biomedical Science and Children's Hospital, and Key Laboratory of Reproduction Regulation of the National Population and Family Planning Commission (NPFPC), Shanghai Institute of Planned Parenthood Research (SIPPR), IRD, Fudan University, Shanghai, China
| | - Changlian Zhu
- Henan Key Laboratory of Child Brain Injury, Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Institute of Neuroscience and Physiology, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden
| | - Kaya Bilguvar
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
- Yale Center for Genome Analysis, Yale University, New Haven, CT, USA
| | - Sergio Padilla-Lopez
- Pediatric Movement Disorders Program, Division of Pediatric Neurology, Barrow Neurological Institute, Phoenix Children's Hospital, Phoenix, AZ, USA
- Departments of Child Health, Neurology, and Cellular & Molecular Medicine, and Program in Genetics, University of Arizona College of Medicine-Phoenix, Phoenix, AZ, USA
| | - Richard P Lifton
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
- Laboratory of Human Genetics and Genomics, Rockefeller University, New York, NY, USA
| | - Jozef Gecz
- Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
| | - Alastair H MacLennan
- Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
| | - Michael C Kruer
- Pediatric Movement Disorders Program, Division of Pediatric Neurology, Barrow Neurological Institute, Phoenix Children's Hospital, Phoenix, AZ, USA.
- Departments of Child Health, Neurology, and Cellular & Molecular Medicine, and Program in Genetics, University of Arizona College of Medicine-Phoenix, Phoenix, AZ, USA.
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26
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RhoA-GTPase Modulates Neurite Outgrowth by Regulating the Expression of Spastin and p60-Katanin. Cells 2020; 9:cells9010230. [PMID: 31963385 PMCID: PMC7016723 DOI: 10.3390/cells9010230] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 01/10/2020] [Accepted: 01/14/2020] [Indexed: 12/17/2022] Open
Abstract
RhoA-GTPase (RhoA) is widely regarded as a key molecular switch to inhibit neurite outgrowth by rigidifying the actin cytoskeleton. However, during neurite outgrowth, whether and how microtubule dynamics are regulated by RhoA remains to be elucidated. Herein, CT04 and Y27632 were used to inactivate RhoA and its downstream effector Rho-associated coiled coil-forming kinase (ROCK), while the RhoAQ63L lentiviral vector was utilized to overexpress the constitutively activated RhoA in dorsal root ganglion (DRG) neurons or neuronal differentiated PC12 cells. The current data illustrate that the RhoA signaling pathway negatively modulates neurite outgrowth and elevates the expression of Glu-tubulin (a marker for a stabilized microtubule). Meanwhile, the microtubule-severing proteins spastin and p60-katanin were downregulated by the RhoA signaling pathway. When spastin and p60-katanin were knocked down, the effects of RhoA inhibition on neurite outgrowth were significantly reversed. Taken together, this study demonstrates that the RhoA pathway-mediated inhibition of neurite outgrowth is not only related to the modulation of microfilament dynamics but is also attributable to the regulation of the expression of spastin and p60-katanin and thus influences microtubule dynamics.
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Familial, long-term pollakisuria as initial manifestation of HSP4 due to the SPAST variant c.683-2A>C. J Clin Neurosci 2019; 64:4-5. [PMID: 30962061 DOI: 10.1016/j.jocn.2019.03.067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 03/29/2019] [Indexed: 11/21/2022]
Abstract
OBJECTIVE Hereditary spastic paraplegia type-IV (HSP4) is the most common of the autosomal-dominant HSPs. Though urinary dysfunction is a frequent phenotypic feature, long-term pollakisuria as the initial manifestation of HSP4 has not been reported. CASE REPORT The patient is a 56yo female with an uneventful history until age 46y, when she developed pollakisuria. After another 6y she developed a coordination disorder, recognized as difficulties with running and climbing stairs. Since 6 m prior to presentation, she recognized mild dysphagia. The further history was positive for strabismus, varicosity, hepatopathy, thiamin-deficiency, niacin-deficiency, lumbago, cutaneous borelliosis, abortive psoriasis, lumbar spondylosis, osteochondrosis L5/S1, and HLA-B27-positive rheumatoid arthritis. Clinical exam revealed mild weakness for left foot extension (M5-), a right subclonic patella tendon reflex, and mildly impaired left hook transition. Nerve conduction studies revealed subclinical polyneuropathy. Ophthalmologic investigations, and MRI of the brain and spinal cord were non-informative. Genetic work-up revealed the novel variant c.683-2A > C in the SPAST gene. The family history was positive for HSP in her mother and sister. Pure HSP4 was diagnosed. CONCLUSIONS Pure HSP4 may manifest at onset with year-long pollakisuria exclusively. HSP4 may take a mild course over years, allowing the patient to do sports and to practice a demanding job.
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