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Zeineddine Y, Friedman MA, Buettmann EG, Abraham LB, Hoppock GA, Donahue HJ. Genetic diversity modulates the physical and transcriptomic response of skeletal muscle to simulated microgravity in male mice. NPJ Microgravity 2023; 9:86. [PMID: 38040743 PMCID: PMC10692100 DOI: 10.1038/s41526-023-00334-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 11/09/2023] [Indexed: 12/03/2023] Open
Abstract
Developments in long-term space exploration necessitate advancements in countermeasures against microgravity-induced skeletal muscle loss. Astronaut data shows considerable variation in muscle loss in response to microgravity. Previous experiments suggest that genetic background influences the skeletal muscle response to unloading, but no in-depth analysis of genetic expression has been performed. Here, we placed eight, male, inbred founder strains of the diversity outbred mice (129S1/SvImJ, A/J, C57BL/6J, CAST/EiJ, NOD/ShiLtJ, NZO/HILtJ, PWK/PhJ, and WSB/EiJ) in simulated microgravity (SM) via hindlimb unloading for three weeks. Body weight, muscle morphology, muscle strength, protein synthesis marker expression, and RNA expression were collected. A/J and CAST/EiJ mice were most susceptible to SM-induced muscle loss, whereas NOD/ShiLtJ mice were the most protected. In response to SM, A/J and CAST/EiJ mice experienced reductions in body weight, muscle mass, muscle volume, and muscle cross-sectional area. A/J mice had the highest number of differentially expressed genes (68) and associated gene ontologies (328). Downregulation of immunological gene ontologies and genes encoding anabolic immune factors suggest that immune dysregulation contributes to the response of A/J mice to SM. Several muscle properties showed significant interactions between SM and mouse strain and a high degree of heritability. These data imply that genetic background plays a role in the degree of muscle loss in SM and that more individualized programs should be developed for astronauts to protect their skeletal muscles against microgravity on long-term missions.
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Affiliation(s)
- Yasmina Zeineddine
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Michael A Friedman
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Evan G Buettmann
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Lovell B Abraham
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Gabriel A Hoppock
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Henry J Donahue
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA.
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2
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Role of Neurite Outgrowth Inhibitor B Receptor in hepatic steatosis. Acta Histochem 2022; 124:151977. [DOI: 10.1016/j.acthis.2022.151977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/16/2022] [Accepted: 11/18/2022] [Indexed: 11/22/2022]
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3
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Liang H, Guo W, He H, Zhang H, Ye Q, Zhang Q, Liao J, Shen Y, Wang J, Xiao Y, Qin C. Decreased soluble Nogo-B in serum as a promising biomarker for Parkinson's disease. Front Neurosci 2022; 16:894454. [PMID: 35958994 PMCID: PMC9360801 DOI: 10.3389/fnins.2022.894454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 07/05/2022] [Indexed: 12/27/2022] Open
Abstract
BackgroundRecently, the neurite outgrowth inhibitor-B (Nogo-B) receptor has been reported as a novel candidate gene for Parkinson's disease (PD). Nogo-B receptors need to combine with soluble Nogo-B to exert their physiological function. However, little is known about the relationship between serum soluble Nogo-B and PD.MethodsSerum levels of sNogo-B and α-Synuclein (α-Syn) were measured in a cohort of 53 patients with PD and 49 healthy controls with the ELISA kit method.ResultsSerum sNogo-B level is significantly lower in the PD group than that in healthy controls and is negatively correlated with UPDRS-III score (p = 0.049), H&Y stage (p = 0.0108) as well as serum α-Syn level (p = 0.0001). The area under the curve (AUC) of serum sNogo-B in differentiating patients with PD from controls was 0.801 while the AUC of serum α-Syn was 0.93. Combining serum sNogo-B and α-Syn in differentiating patients with PD from HC presented higher discriminatory potential (AUC = 0.9534).ConclusionDecreased serum sNogo-B may be a potential biomarker for PD. Lower Nogo-B level reflects worse motor function and disease progression of PD. Serum sNogo-B is of added value to serum α-Syn panel in distinguishing PD from controls. Future studies are needed to confirm in larger samples and different populations.
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Affiliation(s)
- Hongming Liang
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Department of Neurology, The First People's Hospital of Yulin, The Sixth Affiliated Hospital of Guangxi Medical University, Yulin, China
| | - Wenyuan Guo
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Honghu He
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Hui Zhang
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Department of Rehabilitation Medicine, The First People's Hospital of Yulin, The Sixth Affiliated Hospital of Guangxi Medical University, Yulin, China
| | - Qiongyu Ye
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Qingxin Zhang
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Jiajia Liao
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yuefei Shen
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Jin Wang
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yousheng Xiao
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
- *Correspondence: Chao Qin
| | - Chao Qin
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Yousheng Xiao
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Wang YH, Ding ZY, Cheng YJ, Chien CT, Huang ML. An Efficient Screen for Cell-Intrinsic Factors Identifies the Chaperonin CCT and Multiple Conserved Mechanisms as Mediating Dendrite Morphogenesis. Front Cell Neurosci 2020; 14:577315. [PMID: 33100975 PMCID: PMC7546278 DOI: 10.3389/fncel.2020.577315] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 09/02/2020] [Indexed: 12/25/2022] Open
Abstract
Dendritic morphology is inextricably linked to neuronal function. Systematic large-scale screens combined with genetic mapping have uncovered several mechanisms underlying dendrite morphogenesis. However, a comprehensive overview of participating molecular mechanisms is still lacking. Here, we conducted an efficient clonal screen using a collection of mapped P-element insertions that were previously shown to cause lethality and eye defects in Drosophila melanogaster. Of 280 mutants, 52 exhibited dendritic defects. Further database analyses, complementation tests, and RNA interference validations verified 40 P-element insertion genes as being responsible for the dendritic defects. Twenty-eight mutants presented severe arbor reduction, and the remainder displayed other abnormalities. The intrinsic regulators encoded by the identified genes participate in multiple conserved mechanisms and pathways, including the protein folding machinery and the chaperonin-containing TCP-1 (CCT) complex that facilitates tubulin folding. Mutant neurons in which expression of CCT4 or CCT5 was depleted exhibited severely retarded dendrite growth. We show that CCT localizes in dendrites and is required for dendritic microtubule organization and tubulin stability, suggesting that CCT-mediated tubulin folding occurs locally within dendrites. Our study also reveals novel mechanisms underlying dendrite morphogenesis. For example, we show that Drosophila Nogo signaling is required for dendrite development and that Mummy and Wech also regulate dendrite morphogenesis, potentially via Dpp- and integrin-independent pathways. Our methodology represents an efficient strategy for identifying intrinsic dendrite regulators, and provides insights into the plethora of molecular mechanisms underlying dendrite morphogenesis.
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Affiliation(s)
- Ying-Hsuan Wang
- Department of Biomedical Sciences, National Chung Cheng University, Chiayi, Taiwan.,Institute of Molecular Biology, Academia Sinica, Taipei, Taiwan
| | - Zhao-Ying Ding
- Department of Biomedical Sciences, National Chung Cheng University, Chiayi, Taiwan
| | - Ying-Ju Cheng
- Institute of Molecular Biology, Academia Sinica, Taipei, Taiwan
| | | | - Min-Lang Huang
- Department of Biomedical Sciences, National Chung Cheng University, Chiayi, Taiwan
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5
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Zhang R, Tang BS, Guo JF. Research advances on neurite outgrowth inhibitor B receptor. J Cell Mol Med 2020; 24:7697-7705. [PMID: 32542927 PMCID: PMC7348171 DOI: 10.1111/jcmm.15391] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 04/17/2020] [Accepted: 04/27/2020] [Indexed: 12/24/2022] Open
Abstract
Neurite outgrowth inhibitor‐B (Nogo‐B) is a membrane protein which is extensively expressed in multiple organs, especially in endothelial cells and vascular smooth muscle cells of blood vessels and belongs to the reticulon protein family. Notably, its specific receptor, Nogo‐B receptor (NgBR), encoded by NUS1, has been implicated in many crucial cellular processes, such as cholesterol trafficking, lipid metabolism, dolichol synthesis, protein N‐glycosylation, vascular remodelling, angiogenesis, tumorigenesis and neurodevelopment. In recent years, accumulating studies have demonstrated the statistically significant changes of NgBR expression levels in human diseases, including Niemann‐Pick type C disease, fatty liver, congenital disorders of glycosylation, persistent pulmonary hypertension of the newborn, invasive ductal breast carcinoma, malignant melanoma, non‐small cell lung carcinoma, paediatric epilepsy and Parkinson's disease. Besides, both the in vitro and in vivo studies have shown that NgBR overexpression or knockdown contribute to the alteration of various pathophysiological processes. Thus, there is a broad development potential in therapeutic strategies by modifying the expression levels of NgBR.
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Affiliation(s)
- Rui Zhang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Bei-Sha Tang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China.,Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, China.,Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China.,Parkinson's Disease Center, Beijing Institute for Brain Disorders, Beijing, China
| | - Ji-Feng Guo
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China.,Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, China.,Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
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6
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Zhang Y, Huo W, Wen Y, Li H. Silencing Nogo-B receptor inhibits penile corpus cavernosum vascular smooth muscle cell apoptosis of rats with diabetic erectile dysfunction by down-regulating ICAM-1. PLoS One 2019; 14:e0220715. [PMID: 31442237 PMCID: PMC6707583 DOI: 10.1371/journal.pone.0220715] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 07/22/2019] [Indexed: 12/16/2022] Open
Abstract
Erectile dysfunction (ED) is a major sexual problem for men. Nogo-B receptor (NgBR) has been found to be involved in the regulation of vascular remodeling and angiogenesis. The present study explores the effects of NgBR in penile corpus cavernosum in rats with diabetic ED. Firstly, the ED model of Sprague Dawley rats was established. Hematoxylin-eosin staining and Masson staining were conducted to observe pathological morphology. Immunochemical assay was adopted to detect α-smooth muscle actin (α-SMA), NgBR and intercellular cell adhesion molecule-1 (ICAM-1) expression. Reverse transcription quantitative polymerase chain reaction assay and Western blot analysis were carried out for the assessment of NgBR, factors correlated to ICAM-1, including steroid receptor coactivator (SRC) and proline-rich tyrosine kinase2 (PYK2), and factors associated with apoptosis, including B-cell lymphoma-2 (Bcl-2), Bcl-2 associated protein X (Bax), caspase 3 and cleaved-caspase 3. The results found that capillaries and vascular smooth muscle cell content reduced, and NgBR and ICAM-1 were elevated in rats with diabetic ED. si-NgBR relieved ED by decreasing penile corpus cavernosum smooth muscle systolic percentage and increasing erectile time and rate, intracavernous pressure (ICP)/mean arterial pressure (MAP) and diastolic percentage, improving the pathological changes and inhibiting cavernosum cell apoptosis. si-NgBR also resulted in the down-regulation of ICAM-1 and downstream SRC and PYK2 and promoted α-SMA expression. In conclusion, si-NgBR can provide a potential therapy for diabetic ED in rats by down-regulating ICAM-1, SRC and PYK2, making it a potential therapeutic option for diabetic ED.
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Affiliation(s)
- Yun Zhang
- Department of Urology, China-Japan Union Hospital of Jilin University, Changchun, P.R.China
| | - Wei Huo
- Department of Urology, China-Japan Union Hospital of Jilin University, Changchun, P.R.China
| | - Yan Wen
- Department of Endocrine, China-Japan Union Hospital of Jilin University, Changchun, P.R. China
| | - Hai Li
- Department of Urology, China-Japan Union Hospital of Jilin University, Changchun, P.R.China
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7
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Fogli B, Corthout N, Kerstens A, Bosse F, Klimaschewski L, Munck S, Schweigreiter R. Imaging axon regeneration within synthetic nerve conduits. Sci Rep 2019; 9:10095. [PMID: 31300753 PMCID: PMC6626049 DOI: 10.1038/s41598-019-46579-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 06/28/2019] [Indexed: 11/23/2022] Open
Abstract
While axons within the central nervous system (CNS) do not regenerate following injury, those in the peripheral nervous system (PNS) do, although not in a clinically satisfactory manner as only a small proportion of axons exhibit long-distance regeneration. Moreover, functional recovery is hampered by excessive axonal sprouting and aberrant reinnervation of target tissue. In order to investigate the mechanisms governing the regrowth of axons following injury, previous studies have used lesion paradigms of peripheral nerves in rat or mouse models, and reagents or cells have been administered to the lesion site through nerve conduits, aiming to improve early-stage regeneration. Morphological analysis of such in vivo experiments has however been limited by the incompatibility of synthetic nerve conduits with existing tissue-clearing and imaging techniques. We present herein a novel experimental approach that allows high-resolution imaging of individual axons within nerve conduits, together with quantitative assessment of fiber growth. We used a GFP-expressing mouse strain in a lesion model of the sciatic nerve to describe a strategy that combines nerve clearing, chemical treatment of chitosan nerve conduits, and long working distance confocal microscopy with image processing and analysis. This novel experimental setup provides a means of documenting axon growth within the actual conduit during the critical initial stage of regeneration. This will greatly facilitate the development and evaluation of treatment regimens to improve axonal regeneration following nerve damage.
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Affiliation(s)
- Barbara Fogli
- Innsbruck Medical University, Department of Anatomy, Histology and Embryology, Division of Neuroanatomy, 6020, Innsbruck, Austria
| | - Nikky Corthout
- VIB-KU Leuven Center for Brain & Disease Research O&N 4, Campus Gasthuisberg, 3000, Leuven, Belgium.,KU Leuven, Department for Neuroscience, Campus Gasthuisberg, 3000, Leuven, Belgium.,VIB Bio Imaging Core, Campus Gasthuisberg, 3000, Leuven, Belgium
| | - Axelle Kerstens
- VIB-KU Leuven Center for Brain & Disease Research O&N 4, Campus Gasthuisberg, 3000, Leuven, Belgium.,KU Leuven, Department for Neuroscience, Campus Gasthuisberg, 3000, Leuven, Belgium.,VIB Bio Imaging Core, Campus Gasthuisberg, 3000, Leuven, Belgium
| | - Frank Bosse
- Heinrich-Heine-University Düsseldorf, Department of Neurology, Molecular Neurobiology Laboratory, 40225, Düsseldorf, Germany
| | - Lars Klimaschewski
- Innsbruck Medical University, Department of Anatomy, Histology and Embryology, Division of Neuroanatomy, 6020, Innsbruck, Austria
| | - Sebastian Munck
- VIB-KU Leuven Center for Brain & Disease Research O&N 4, Campus Gasthuisberg, 3000, Leuven, Belgium. .,KU Leuven, Department for Neuroscience, Campus Gasthuisberg, 3000, Leuven, Belgium. .,VIB Bio Imaging Core, Campus Gasthuisberg, 3000, Leuven, Belgium.
| | - Rüdiger Schweigreiter
- Innsbruck Medical University, Biocenter, Division of Neurobiochemistry, 6020, Innsbruck, Austria.
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8
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Lin Y, Li C, Li J, Deng R, Huang J, Zhang Q, Lyu J, Hao N, Zhong Z. NEP 1-40-modified human serum albumin nanoparticles enhance the therapeutic effect of methylprednisolone against spinal cord injury. J Nanobiotechnology 2019; 17:12. [PMID: 30670038 PMCID: PMC6341626 DOI: 10.1186/s12951-019-0449-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Accepted: 01/09/2019] [Indexed: 01/16/2023] Open
Abstract
Background Frequent injection of high-dose methylprednisolone (MP) is used to treat spinal cord injury (SCI), but free MP is associated with various side effects and its water solubility is low, limiting potential dosing regimes and administration routes. Albumin-based nanoparticles, which can encapsulate therapeutic drugs and release cargo in a controlled pattern, show high biocompatibility and low toxicity. The Nogo protein, expressed on the surface of oligodendrocytes, can inhibit axonal growth by binding with the axonal Nogo receptor (NgR). Peptide NEP1-40, an NgR antagonist, can bind specifically to Nogo, significantly improving functional recovery and axon growth in the corticospinal tract. Therefore, we hypothesized that delivering MP within nanoparticles decorated with NEP1-40 could avoid the disadvantages of free MP and enhance its therapeutic efficacy against SCI. Results We used human serum albumin to prepare MP-loaded NPs (MP-NPs), to whose surface we conjugated NEP1-40 to form NEP1-40-MP-NPs. Transmission electron microscopy indicated successful formation of nanoparticles. NEP1-40-MP-NPs were taken up significantly better than MP-NPs by the Nogo-positive cell line RSC-96 and were associated with significantly higher Basso–Beattie–Bresnahan locomotor scores in rats recovering from SCI. Micro-computed tomography assay showed that NEP1-40-MP-NPs mitigated SCI-associated loss of bone mineral density and accelerated spinal cord repair. Conclusions NEP1-40-MP-NPs can enhance the therapeutic effects of MP against SCI. This novel platform may also be useful for delivering other types of drugs. ![]() Electronic supplementary material The online version of this article (10.1186/s12951-019-0449-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yan Lin
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, 646000, China
| | - Chunhong Li
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, 646000, China
| | - Jian Li
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, 646000, China
| | - Ruolan Deng
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, 646000, China
| | - Juan Huang
- Luzhou TCM Hospital, Luzhou, 646000, China
| | | | - Jiayao Lyu
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, 646000, China
| | - Na Hao
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, 646000, China.
| | - Zhirong Zhong
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, Luzhou, 646000, China. .,Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education (Sichuan University), Chengdu, 610000, China. .,Key Laboratory of Medical Electrophysiology, Ministry of Education, Institute of Cardiovascular Research of Southwest Medical University, Luzhou, 646000, China.
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9
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Jocher G, Mannschatz SH, Offterdinger M, Schweigreiter R. Microfluidics of Small-Population Neurons Allows for a Precise Quantification of the Peripheral Axonal Growth State. Front Cell Neurosci 2018; 12:166. [PMID: 29962939 PMCID: PMC6013724 DOI: 10.3389/fncel.2018.00166] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 05/29/2018] [Indexed: 12/30/2022] Open
Abstract
Neurons are morphologically the most complex cell types and are characterized by a significant degree of axonal autonomy as well as having efficient means of communication between axons and neuronal cell bodies. For studying the response to axonal injury, compartmentalized microfluidic chambers (MFCs) have become the method of choice because they allow for the selective treatment of axons, independently of the soma, in a highly controllable and reproducible manner. A major disadvantage of these devices is the relatively large number of neurons needed for seeding, which makes them impractical to use with small-population neurons, such as sensory neurons of the mouse. Here, we describe a simple approach of seeding and culturing neurons in MFCs that allows for a dramatic reduction of neurons required to 10,000 neurons per device. This technique facilitates efficient experiments with small-population neurons in compartmentalized MFCs. We used this experimental setup to determine the intrinsic axonal growth state of adult mouse sensory neurons derived from dorsal root ganglia (DRG) and even trigeminal ganglia (TG). In combination with a newly developed linear Sholl analysis tool, we have examined the axonal growth responses of DRG and TG neurons to various cocktails of neurotrophins, glial cell line-derived neurotrophic factor (GDNF), ciliary neurotrophic factor (CNTF) and leptin. Precise quantification of axonal outgrowth revealed specific differences in the potency of each combination to promote axonal regeneration and to switch neurons into an intrinsic axonal growth state. This novel experimental setup opens the way to practicable microfluidic analyses of neurons that have previously been largely neglected simply due to insufficient numbers, including sensory neurons, sympathetic neurons and motor neurons.
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Affiliation(s)
- Georg Jocher
- Biocenter, Division of Neurobiochemistry, Innsbruck Medical University, Innsbruck, Austria
| | - Sidney H Mannschatz
- Biocenter, Division of Neurobiochemistry, Innsbruck Medical University, Innsbruck, Austria
| | - Martin Offterdinger
- Biocenter, Division of Neurobiochemistry, Innsbruck Medical University, Innsbruck, Austria
| | - Rüdiger Schweigreiter
- Biocenter, Division of Neurobiochemistry, Innsbruck Medical University, Innsbruck, Austria
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10
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Jia S, Qiao X, Ye J, Fang X, Xu C, Cao Y, Zheng M. Nogo-C regulates cardiomyocyte apoptosis during mouse myocardial infarction. Cell Death Dis 2016; 7:e2432. [PMID: 27763637 PMCID: PMC5133994 DOI: 10.1038/cddis.2016.331] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Revised: 09/17/2016] [Accepted: 09/20/2016] [Indexed: 01/03/2023]
Abstract
Myocardial infarction is caused by insufficient coronary blood supply, which leads to myocardial damage and eventually the heart failure. Molecular mechanisms associated with the loss of cardiomyocytes during myocardial infarction (MI) and ischemia-related cardiac diseases are not yet fully understood. Nogo-C is an endoplasmic reticulum protein ubiquitously expressed in tissues including in the heart, however, the cardiac function of Nogo-C is still unknown. In the present study, we found that Nogo-C was upregulated in mouse hearts after MI, and hypoxic treatments also increased Nogo-C protein level in cardiomyocytes. Adenovirus mediated overexpression of Nogo-C led to cardiomyocyte apoptosis, whereas knockdown of Nogo-c by shRNA protected cardiomyocytes from hypoxia-induced cell apoptosis. Importantly, Nogo-C knockout mice displayed improved cardiac function, smaller infarct area, and less apoptotic cells after MI. Moreover, we found that miR-182 negatively regulated Nogo-C expression and was downregulated during MI, expressing miR-182 in cardiomyocytes protected hypoxia- and Nogo-C-mediated cell apoptosis. Our results indicate that increased cardiac Nogo-C expression is both sufficient and necessary for ischemia-induced cardiomyocyte apoptosis and cardiac dysfunction, suggesting that deregulation of Nogo-C by miRNA may be a potential therapeutic target for ischemia-related heart diseases.
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Affiliation(s)
- Shi Jia
- Department of Physiology and Pathophysiology, Health Science Center, Peking University, Beijing 100191, China
| | - Xue Qiao
- Department of Physiology and Pathophysiology, Health Science Center, Peking University, Beijing 100191, China
| | - Jingjing Ye
- Department of Physiology and Pathophysiology, Health Science Center, Peking University, Beijing 100191, China
| | - Xuan Fang
- Department of Physiology and Pathophysiology, Health Science Center, Peking University, Beijing 100191, China
| | - Chunling Xu
- Department of Physiology and Pathophysiology, Health Science Center, Peking University, Beijing 100191, China
| | - Yangpo Cao
- Department of Physiology and Pathophysiology, Health Science Center, Peking University, Beijing 100191, China
| | - Ming Zheng
- Department of Physiology and Pathophysiology, Health Science Center, Peking University, Beijing 100191, China
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11
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Wang L, Wang J, Ma D, Taylor JS, Chan SO. Isoform-specific localization of Nogo protein in the optic pathway of mouse embryos. J Comp Neurol 2016; 524:2322-34. [DOI: 10.1002/cne.23953] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 12/23/2015] [Accepted: 12/28/2015] [Indexed: 02/04/2023]
Affiliation(s)
- Liqing Wang
- Department of Neurology; the Third Affiliated Hospital of Sun Yat-Sen University; Guangzhou Guangdong 510630 China
| | - Jun Wang
- Department of Anatomy and Embryology; School of Basic Medical Sciences, Peking University; Beijing 100191 China
| | - Ding Ma
- School of Biomedical Sciences; The Chinese University of Hong Kong, Shatin, N.T; Hong Kong China
| | - Jeremy S.H. Taylor
- Department of Physiology; Anatomy and Genetics, Le Gros Clark Building, Oxford OX1 3QX; United Kingdom
| | - Sun-On Chan
- School of Biomedical Sciences; The Chinese University of Hong Kong, Shatin, N.T; Hong Kong China
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